hash,date,author,commit_message,is_merge,masked_commit_message,type,git_diff
0df72136702796e3bdcca10e822da76a1b1ef1bd,2019-08-25 23:23:57,rhin123,terminal: Fixed bounding issue when clearing the selection on type,False,Fixed bounding issue when clearing the selection on type,terminal,"diff --git a/Applications/Terminal/TerminalWidget.cpp b/Applications/Terminal/TerminalWidget.cpp
index ce59aa767724..d08094263de6 100644
--- a/Applications/Terminal/TerminalWidget.cpp
+++ b/Applications/Terminal/TerminalWidget.cpp
@@ -177,7 +177,7 @@ void TerminalWidget::keydown_event(GKeyEvent& event)
         auto min_selection_row = min(m_selection_start.row(), m_selection_end.row());
         auto max_selection_row = max(m_selection_start.row(), m_selection_end.row());
 
-        if (future_cursor_column <= max(m_selection_start.column(), m_selection_end.column()) && m_terminal.cursor_row() >= min_selection_row && m_terminal.cursor_row() <= max_selection_row) {
+        if (future_cursor_column <= last_selection_column_on_row(m_terminal.cursor_row()) && m_terminal.cursor_row() >= min_selection_row && m_terminal.cursor_row() <= max_selection_row) {
             m_selection_end = {};
             update();
         }
@@ -464,8 +464,8 @@ String TerminalWidget::selected_text() const
     auto end = normalized_selection_end();
 
     for (int row = start.row(); row <= end.row(); ++row) {
-        int first_column = row == start.row() ? start.column() : 0;
-        int last_column = row == end.row() ? end.column() : m_terminal.columns() - 1;
+        int first_column = first_selection_column_on_row(row);
+        int last_column = last_selection_column_on_row(row);
         for (int column = first_column; column <= last_column; ++column) {
             auto& line = m_terminal.line(row);
             if (line.attributes[column].is_untouched()) {
@@ -482,6 +482,16 @@ String TerminalWidget::selected_text() const
     return builder.to_string();
 }
 
+int TerminalWidget::first_selection_column_on_row(int row) const
+{
+    return row == normalized_selection_start().row() ? normalized_selection_start().column() : 0;
+}
+
+int TerminalWidget::last_selection_column_on_row(int row) const
+{
+    return row == normalized_selection_end().row() ? normalized_selection_end().column() : m_terminal.columns() - 1;
+}
+
 void TerminalWidget::terminal_history_changed()
 {
     bool was_max = m_scrollbar->value() == m_scrollbar->max();
diff --git a/Applications/Terminal/TerminalWidget.h b/Applications/Terminal/TerminalWidget.h
index e4c7b0ba26db..4307c45d29f5 100644
--- a/Applications/Terminal/TerminalWidget.h
+++ b/Applications/Terminal/TerminalWidget.h
@@ -66,6 +66,8 @@ class TerminalWidget final : public GFrame
     void invalidate_cursor();
 
     Size compute_base_size() const;
+    int first_selection_column_on_row(int row) const;
+    int last_selection_column_on_row(int row) const;
 
     VT::Terminal m_terminal;"
ba6ffea03c295c6725d830c7d77a290891881466,2019-02-04 18:00:03,Andreas Kling,kernel: Process should send SIGCHLD to its parent when it dies.,False,Process should send SIGCHLD to its parent when it dies.,kernel,"diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index 68dc757ce28f..009b4baf8b7d 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -2172,6 +2172,11 @@ void Process::die()
     m_fds.clear();
     m_tty = nullptr;
     destroy_all_windows();
+
+    InterruptDisabler disabler;
+    if (auto* parent_process = Process::from_pid(m_ppid)) {
+        parent_process->send_signal(SIGCHLD, this);
+    }
 }
 
 size_t Process::amount_virtual() const
diff --git a/Userland/guitest2.cpp b/Userland/guitest2.cpp
index 444e0d5a0f75..37693fac7f54 100644
--- a/Userland/guitest2.cpp
+++ b/Userland/guitest2.cpp
@@ -16,6 +16,7 @@
 #include <LibGUI/GEventLoop.h>
 #include <LibGUI/GTextBox.h>
 #include <LibGUI/GCheckBox.h>
+#include <signal.h>
 
 class ClockWidget final : public GWidget {
 public:
@@ -69,8 +70,15 @@ static GWindow* make_font_test_window();
 static GWindow* make_launcher_window();
 static GWindow* make_clock_window();
 
+void handle_sigchld(int)
+{
+    dbgprintf(""Got SIGCHLD\n"");
+}
+
 int main(int argc, char** argv)
 {
+    signal(SIGCHLD, handle_sigchld);
+
     GEventLoop loop;
 #if 0
     auto* font_test_window = make_font_test_window();"
062c9efa8813e66461c5978b3bfc06de85ad5d76,2023-02-26 17:39:16,Tim Ledbetter,"pixelpaint: Add ""Delete Mask"" action",False,"Add ""Delete Mask"" action",pixelpaint,"diff --git a/Userland/Applications/PixelPaint/Layer.cpp b/Userland/Applications/PixelPaint/Layer.cpp
index b1b7dd9c1274..8869c2dd8566 100644
--- a/Userland/Applications/PixelPaint/Layer.cpp
+++ b/Userland/Applications/PixelPaint/Layer.cpp
@@ -317,6 +317,13 @@ ErrorOr<void> Layer::create_mask()
     return {};
 }
 
+void Layer::delete_mask()
+{
+    m_mask_bitmap = nullptr;
+    set_edit_mode(EditMode::Content);
+    update_cached_bitmap();
+}
+
 Gfx::Bitmap& Layer::currently_edited_bitmap()
 {
     switch (edit_mode()) {
diff --git a/Userland/Applications/PixelPaint/Layer.h b/Userland/Applications/PixelPaint/Layer.h
index d3b76c06ca51..ef4156f4eae7 100644
--- a/Userland/Applications/PixelPaint/Layer.h
+++ b/Userland/Applications/PixelPaint/Layer.h
@@ -46,6 +46,7 @@ class Layer
     Gfx::Bitmap* mask_bitmap() { return m_mask_bitmap; }
 
     ErrorOr<void> create_mask();
+    void delete_mask();
     Gfx::Bitmap& get_scratch_edited_bitmap();
 
     Gfx::IntSize size() const { return content_bitmap().size(); }
diff --git a/Userland/Applications/PixelPaint/MainWidget.cpp b/Userland/Applications/PixelPaint/MainWidget.cpp
index 6fd63d35f2ef..705286cce2ef 100644
--- a/Userland/Applications/PixelPaint/MainWidget.cpp
+++ b/Userland/Applications/PixelPaint/MainWidget.cpp
@@ -82,6 +82,7 @@ MainWidget::MainWidget()
                     m_palette_widget->set_image_editor(nullptr);
                     m_tool_properties_widget->set_enabled(false);
                     set_actions_enabled(false);
+                    set_mask_actions_for_layer(nullptr);
                 }
                 update_window_modified();
             });
@@ -106,6 +107,7 @@ MainWidget::MainWidget()
         };
         // Ensure that our undo/redo actions are in sync with the current editor.
         image_editor_did_update_undo_stack();
+        set_mask_actions_for_layer(image_editor.active_layer());
     };
 }
 
@@ -739,23 +741,38 @@ ErrorOr<void> MainWidget::initialize_menubar(GUI::Window& window)
     m_layer_menu->add_action(*m_layer_via_cut);
 
     m_layer_menu->add_separator();
-    m_layer_menu->add_action(GUI::Action::create(
-        ""Add M&ask"", { Mod_Ctrl | Mod_Shift, Key_M }, g_icon_bag.add_mask, [&](auto&) {
+
+    auto create_layer_mask_callback = [&](auto const& action_name, Function<void(Layer*)> mask_function) {
+        return [&, mask_function = move(mask_function)](GUI::Action&) {
             auto* editor = current_image_editor();
             VERIFY(editor);
-            auto active_layer = editor->active_layer();
+            auto* active_layer = editor->active_layer();
             if (!active_layer)
                 return;
 
-            if (auto maybe_error = active_layer->create_mask(); maybe_error.is_error()) {
-                GUI::MessageBox::show_error(&window, DeprecatedString::formatted(""Failed to create layer mask: {}"", maybe_error.release_error()));
-                return;
-            }
+            mask_function(active_layer);
 
-            editor->did_complete_action(""Add Mask"");
+            editor->did_complete_action(action_name);
             editor->update();
             m_layer_list_widget->repaint();
+            set_mask_actions_for_layer(active_layer);
+        };
+    };
+
+    m_add_mask_action = GUI::Action::create(
+        ""Add M&ask"", { Mod_Ctrl | Mod_Shift, Key_M }, g_icon_bag.add_mask, create_layer_mask_callback(""Add Mask"", [&](Layer* active_layer) {
+            VERIFY(!active_layer->is_masked());
+            if (auto maybe_error = active_layer->create_mask(); maybe_error.is_error())
+                GUI::MessageBox::show_error(&window, DeprecatedString::formatted(""Failed to create layer mask: {}"", maybe_error.release_error()));
         }));
+    m_layer_menu->add_action(*m_add_mask_action);
+
+    m_delete_mask_action = GUI::Action::create(
+        ""Delete Mask"", create_layer_mask_callback(""Delete Mask"", [&](Layer* active_layer) {
+            VERIFY(active_layer->is_masked());
+            active_layer->delete_mask();
+        }));
+    m_layer_menu->add_action(*m_delete_mask_action);
 
     m_layer_menu->add_separator();
 
@@ -1115,6 +1132,22 @@ void MainWidget::set_actions_enabled(bool enabled)
     m_zoom_combobox->set_enabled(enabled);
 }
 
+void MainWidget::set_mask_actions_for_layer(Layer* layer)
+{
+    if (!layer) {
+        m_add_mask_action->set_visible(true);
+        m_delete_mask_action->set_visible(false);
+        m_add_mask_action->set_enabled(false);
+        return;
+    }
+
+    m_add_mask_action->set_enabled(true);
+
+    auto masked = layer->is_masked();
+    m_add_mask_action->set_visible(!masked);
+    m_delete_mask_action->set_visible(masked);
+}
+
 void MainWidget::open_image(FileSystemAccessClient::File file)
 {
     auto try_load = m_loader.load_from_file(file.release_stream());
@@ -1165,6 +1198,7 @@ ErrorOr<void> MainWidget::create_image_from_clipboard()
 
     m_layer_list_widget->set_image(image);
     m_layer_list_widget->set_selected_layer(layer);
+    set_mask_actions_for_layer(layer);
     return {};
 }
 
@@ -1196,6 +1230,7 @@ ImageEditor& MainWidget::create_new_editor(NonnullRefPtr<Image> image)
             return;
         m_layer_list_widget->set_selected_layer(layer);
         m_layer_properties_widget->set_layer(layer);
+        set_mask_actions_for_layer(layer);
     };
 
     image_editor.on_title_change = [&](auto const& title) {
diff --git a/Userland/Applications/PixelPaint/MainWidget.h b/Userland/Applications/PixelPaint/MainWidget.h
index b30bc5b222fa..b419b4f0f100 100644
--- a/Userland/Applications/PixelPaint/MainWidget.h
+++ b/Userland/Applications/PixelPaint/MainWidget.h
@@ -56,6 +56,7 @@ class MainWidget : public GUI::Widget {
     void image_editor_did_update_undo_stack();
 
     void set_actions_enabled(bool enabled);
+    void set_mask_actions_for_layer(Layer* active_layer);
 
     virtual void drag_enter_event(GUI::DragEvent&) override;
     virtual void drop_event(GUI::DropEvent&) override;
@@ -110,6 +111,9 @@ class MainWidget : public GUI::Widget {
     RefPtr<GUI::Action> m_layer_via_copy;
     RefPtr<GUI::Action> m_layer_via_cut;
 
+    RefPtr<GUI::Action> m_add_mask_action;
+    RefPtr<GUI::Action> m_delete_mask_action;
+
     Gfx::IntPoint m_last_image_editor_mouse_position;
 };"
7e8d3e370f34fd935be7ad2c35176fb50d23b12a,2023-12-30 23:20:29,Luke Wilde,libweb: Treat BufferSource as a DataView/ArrayBuffer/TA in IDL overloads,False,Treat BufferSource as a DataView/ArrayBuffer/TA in IDL overloads,libweb,"diff --git a/Tests/LibWeb/Text/expected/Wasm/WebAssembly-instantiate.txt b/Tests/LibWeb/Text/expected/Wasm/WebAssembly-instantiate.txt
new file mode 100644
index 000000000000..a10952f22b1e
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/Wasm/WebAssembly-instantiate.txt
@@ -0,0 +1,16 @@
+-------------
+ArrayBuffer
+-------------
+Hello from wasm!!!!!!
+FIXME: Run test for Uint8Array. Not running due to flakiness.
+FIXME: Run test for Uint8ClampedArray. Not running due to flakiness.
+FIXME: Run test for Uint16Array. Not running due to flakiness.
+FIXME: Run test for Uint32Array. Not running due to flakiness.
+FIXME: Run test for Int8Array. Not running due to flakiness.
+FIXME: Run test for Int16Array. Not running due to flakiness.
+FIXME: Run test for Float32Array. Not running due to flakiness.
+FIXME: Run test for Float64Array. Not running due to flakiness.
+FIXME: Run test for BigUint64Array. Not running due to flakiness.
+FIXME: Run test for BigInt64Array. Not running due to flakiness.
+FIXME: Run test for DataView. Not running due to flakiness.
+FIXME: Run test for WebAssembly.Module. Not running due to flakiness.
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/input/Wasm/WebAssembly-instantiate.html b/Tests/LibWeb/Text/input/Wasm/WebAssembly-instantiate.html
new file mode 100644
index 000000000000..7015f87bb90e
--- /dev/null
+++ b/Tests/LibWeb/Text/input/Wasm/WebAssembly-instantiate.html
@@ -0,0 +1,111 @@
+<script src=""../include.js""></script>
+<script>
+    asyncTest(async (done) => {
+        let wasm;
+
+        const lTextDecoder = typeof TextDecoder === 'undefined' ? (0, module.require)('util').TextDecoder : TextDecoder;
+
+        let cachedTextDecoder = new lTextDecoder('utf-8', { ignoreBOM: true, fatal: true });
+
+        cachedTextDecoder.decode();
+
+        let cachedUint8Memory0 = null;
+
+        function getUint8Memory0() {
+            if (cachedUint8Memory0 === null || cachedUint8Memory0.byteLength === 0) {
+                cachedUint8Memory0 = new Uint8Array(wasm.memory.buffer);
+            }
+            return cachedUint8Memory0;
+        }
+
+        function getStringFromWasm0(ptr, len) {
+            ptr = ptr >>> 0;
+            return cachedTextDecoder.decode(getUint8Memory0().subarray(ptr, ptr + len));
+        }
+
+        const exports = {
+            ""./wasm_test_bg.js"": {
+                __wbg_println_95d984b86202de7b(arg0, arg1) {
+                    println(getStringFromWasm0(arg0, arg1));
+                },
+                greet() {
+                    wasm.greet();
+                },
+            },
+        };
+
+        const arrayBuffer = new Uint8Array([
+            0x00, 0x61, 0x73, 0x6d, 0x01, 0x00, 0x00, 0x00, 0x01, 0x09, 0x02, 0x60, 0x02, 0x7f, 0x7f, 0x00,
+            0x60, 0x00, 0x00, 0x02, 0x34, 0x01, 0x11, 0x2e, 0x2f, 0x77, 0x61, 0x73, 0x6d, 0x5f, 0x74, 0x65,
+            0x73, 0x74, 0x5f, 0x62, 0x67, 0x2e, 0x6a, 0x73, 0x1e, 0x5f, 0x5f, 0x77, 0x62, 0x67, 0x5f, 0x70,
+            0x72, 0x69, 0x6e, 0x74, 0x6c, 0x6e, 0x5f, 0x39, 0x35, 0x64, 0x39, 0x38, 0x34, 0x62, 0x38, 0x36,
+            0x32, 0x30, 0x32, 0x64, 0x65, 0x37, 0x62, 0x00, 0x00, 0x03, 0x02, 0x01, 0x01, 0x05, 0x03, 0x01,
+            0x00, 0x11, 0x07, 0x12, 0x02, 0x06, 0x6d, 0x65, 0x6d, 0x6f, 0x72, 0x79, 0x02, 0x00, 0x05, 0x67,
+            0x72, 0x65, 0x65, 0x74, 0x00, 0x01, 0x0a, 0x0d, 0x01, 0x0b, 0x00, 0x41, 0x80, 0x80, 0xc0, 0x00,
+            0x41, 0x15, 0x10, 0x00, 0x0b, 0x0b, 0x1e, 0x01, 0x00, 0x41, 0x80, 0x80, 0xc0, 0x00, 0x0b, 0x15,
+            0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x20, 0x66, 0x72, 0x6f, 0x6d, 0x20, 0x77, 0x61, 0x73, 0x6d, 0x21,
+            0x21, 0x21, 0x21, 0x21, 0x21, 0x00, 0x7b, 0x09, 0x70, 0x72, 0x6f, 0x64, 0x75, 0x63, 0x65, 0x72,
+            0x73, 0x02, 0x08, 0x6c, 0x61, 0x6e, 0x67, 0x75, 0x61, 0x67, 0x65, 0x01, 0x04, 0x52, 0x75, 0x73,
+            0x74, 0x00, 0x0c, 0x70, 0x72, 0x6f, 0x63, 0x65, 0x73, 0x73, 0x65, 0x64, 0x2d, 0x62, 0x79, 0x03,
+            0x05, 0x72, 0x75, 0x73, 0x74, 0x63, 0x1d, 0x31, 0x2e, 0x37, 0x33, 0x2e, 0x30, 0x20, 0x28, 0x63,
+            0x63, 0x36, 0x36, 0x61, 0x64, 0x34, 0x36, 0x38, 0x20, 0x32, 0x30, 0x32, 0x33, 0x2d, 0x31, 0x30,
+            0x2d, 0x30, 0x33, 0x29, 0x06, 0x77, 0x61, 0x6c, 0x72, 0x75, 0x73, 0x06, 0x30, 0x2e, 0x31, 0x39,
+            0x2e, 0x30, 0x0c, 0x77, 0x61, 0x73, 0x6d, 0x2d, 0x62, 0x69, 0x6e, 0x64, 0x67, 0x65, 0x6e, 0x12,
+            0x30, 0x2e, 0x32, 0x2e, 0x38, 0x38, 0x20, 0x28, 0x30, 0x62, 0x35, 0x66, 0x30, 0x65, 0x65, 0x63,
+            0x32, 0x29, 0x00, 0x2c, 0x0f, 0x74, 0x61, 0x72, 0x67, 0x65, 0x74, 0x5f, 0x66, 0x65, 0x61, 0x74,
+            0x75, 0x72, 0x65, 0x73, 0x02, 0x2b, 0x0f, 0x6d, 0x75, 0x74, 0x61, 0x62, 0x6c, 0x65, 0x2d, 0x67,
+            0x6c, 0x6f, 0x62, 0x61, 0x6c, 0x73, 0x2b, 0x08, 0x73, 0x69, 0x67, 0x6e, 0x2d, 0x65, 0x78, 0x74
+        ]).buffer;
+
+        const BUFFER_SOURCES = [
+            { constructor: Uint8Array, flaky: true },
+            { constructor: Uint8ClampedArray, flaky: true },
+            { constructor: Uint16Array, flaky: true },
+            { constructor: Uint32Array, flaky: true },
+            { constructor: Int8Array, flaky: true },
+            { constructor: Int16Array, flaky: true },
+            { constructor: Float32Array, flaky: true },
+            { constructor: Float64Array, flaky: true },
+            { constructor: BigUint64Array, flaky: true },
+            { constructor: BigInt64Array, flaky: true },
+            { constructor: DataView, flaky: true },
+        ];
+        
+        async function runTest(buffer) {
+            println(""-------------"")
+            println(buffer.constructor.name);
+            println(""-------------"")
+            const module = await WebAssembly.instantiate(buffer, exports);
+            wasm = module.instance?.exports ?? module.exports;
+            try {
+                wasm.greet();
+            } catch (e) {
+                println(`FIXME: Failed to execute with ${buffer.constructor.name}: ${e.name}: ${e.message}`);
+            }
+            return Promise.resolve();
+        }
+
+        await runTest(arrayBuffer);
+
+        for (const { constructor, flaky } of BUFFER_SOURCES) {
+            if (!flaky) {
+                await runTest(new constructor(arrayBuffer));
+            } else {
+                // The flakiness is the runtime either trapping with a RangeError, or the printed string being complete garbage,
+                // which more prominently happens with DataView and the arrays bigger than u8. However, the RangeError flake is
+                // still possible with u8.
+                println(`FIXME: Run test for ${constructor.name}. Not running due to flakiness.`);
+            }
+        }
+
+        if (false) {
+            const compiledModule = await WebAssembly.compile(arrayBuffer);
+            await runTest(compiledModule);
+        } else {
+            // Same issues as above.
+            println(`FIXME: Run test for WebAssembly.Module. Not running due to flakiness.`);
+        }
+
+        done();
+    });
+</script>
diff --git a/Userland/Libraries/LibWeb/WebIDL/OverloadResolution.cpp b/Userland/Libraries/LibWeb/WebIDL/OverloadResolution.cpp
index 8678c460b278..3a5007b4bab8 100644
--- a/Userland/Libraries/LibWeb/WebIDL/OverloadResolution.cpp
+++ b/Userland/Libraries/LibWeb/WebIDL/OverloadResolution.cpp
@@ -186,7 +186,7 @@ JS::ThrowCompletionOr<ResolvedOverload> resolve_overload(JS::VM& vm, IDL::Effect
         //    then remove from S all other entries.
         else if (value.is_object() && is<JS::ArrayBuffer>(value.as_object())
             && has_overload_with_argument_type_or_subtype_matching(overloads, i, [](IDL::Type const& type) {
-                   if (type.is_plain() && type.name() == ""ArrayBuffer"")
+                   if (type.is_plain() && (type.name() == ""ArrayBuffer"" || type.name() == ""BufferSource""))
                        return true;
                    if (type.is_object())
                        return true;
@@ -204,7 +204,7 @@ JS::ThrowCompletionOr<ResolvedOverload> resolve_overload(JS::VM& vm, IDL::Effect
         //    then remove from S all other entries.
         else if (value.is_object() && is<JS::DataView>(value.as_object())
             && has_overload_with_argument_type_or_subtype_matching(overloads, i, [](IDL::Type const& type) {
-                   if (type.is_plain() && type.name() == ""DataView"")
+                   if (type.is_plain() && (type.name() == ""DataView"" || type.name() == ""BufferSource""))
                        return true;
                    if (type.is_object())
                        return true;
@@ -222,7 +222,7 @@ JS::ThrowCompletionOr<ResolvedOverload> resolve_overload(JS::VM& vm, IDL::Effect
         //    then remove from S all other entries.
         else if (value.is_object() && value.as_object().is_typed_array()
             && has_overload_with_argument_type_or_subtype_matching(overloads, i, [&](IDL::Type const& type) {
-                   if (type.is_plain() && type.name() == static_cast<JS::TypedArrayBase const&>(value.as_object()).element_name())
+                   if (type.is_plain() && (type.name() == static_cast<JS::TypedArrayBase const&>(value.as_object()).element_name() || type.name() == ""BufferSource""))
                        return true;
                    if (type.is_object())
                        return true;"
eb5aae24f404571e750f6537cb97de95ababb686,2023-03-17 22:09:08,Timothy Flynn,libjs: Move creation of fallible VM objects to its creation factory,False,Move creation of fallible VM objects to its creation factory,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/VM.cpp b/Userland/Libraries/LibJS/Runtime/VM.cpp
index 47ed699bf86c..64c90a6d0ace 100644
--- a/Userland/Libraries/LibJS/Runtime/VM.cpp
+++ b/Userland/Libraries/LibJS/Runtime/VM.cpp
@@ -36,7 +36,20 @@ namespace JS {
 
 NonnullRefPtr<VM> VM::create(OwnPtr<CustomData> custom_data)
 {
-    return adopt_ref(*new VM(move(custom_data)));
+    ErrorMessages error_messages {};
+    error_messages[to_underlying(ErrorMessage::OutOfMemory)] = String::from_utf8(ErrorType::OutOfMemory.message()).release_value_but_fixme_should_propagate_errors();
+
+    auto vm = adopt_ref(*new VM(move(custom_data), move(error_messages)));
+
+    WellKnownSymbols well_known_symbols {
+#define __JS_ENUMERATE(SymbolName, snake_name) \
+    Symbol::create(*vm, ""Symbol."" #SymbolName##_string.release_value_but_fixme_should_propagate_errors(), false),
+        JS_ENUMERATE_WELL_KNOWN_SYMBOLS
+#undef __JS_ENUMERATE
+    };
+
+    vm->set_well_known_symbols(move(well_known_symbols));
+    return vm;
 }
 
 template<u32... code_points>
@@ -47,8 +60,9 @@ static constexpr auto make_single_ascii_character_strings(IndexSequence<code_poi
 
 static constexpr auto single_ascii_character_strings = make_single_ascii_character_strings(MakeIndexSequence<128>());
 
-VM::VM(OwnPtr<CustomData> custom_data)
+VM::VM(OwnPtr<CustomData> custom_data, ErrorMessages error_messages)
     : m_heap(*this)
+    , m_error_messages(move(error_messages))
     , m_custom_data(move(custom_data))
 {
     m_empty_string = m_heap.allocate_without_realm<PrimitiveString>(String {});
@@ -150,13 +164,6 @@ VM::VM(OwnPtr<CustomData> custom_data)
         // NOTE: Since LibJS has no way of knowing whether the current environment is a browser we always
         //       call HostEnsureCanAddPrivateElement when needed.
     };
-
-#define __JS_ENUMERATE(SymbolName, snake_name) \
-    m_well_known_symbol_##snake_name = Symbol::create(*this, ""Symbol."" #SymbolName##_string.release_value_but_fixme_should_propagate_errors(), false);
-    JS_ENUMERATE_WELL_KNOWN_SYMBOLS
-#undef __JS_ENUMERATE
-
-    m_error_messages[to_underlying(ErrorMessage::OutOfMemory)] = String::from_utf8(ErrorType::OutOfMemory.message()).release_value_but_fixme_should_propagate_errors();
 }
 
 String const& VM::error_message(ErrorMessage type) const
diff --git a/Userland/Libraries/LibJS/Runtime/VM.h b/Userland/Libraries/LibJS/Runtime/VM.h
index 287b53dfad90..e306ef2a5127 100644
--- a/Userland/Libraries/LibJS/Runtime/VM.h
+++ b/Userland/Libraries/LibJS/Runtime/VM.h
@@ -68,7 +68,7 @@ class VM : public RefCounted<VM> {
 #define __JS_ENUMERATE(SymbolName, snake_name)     \
     Symbol* well_known_symbol_##snake_name() const \
     {                                              \
-        return m_well_known_symbol_##snake_name;   \
+        return m_well_known_symbols.snake_name;    \
     }
     JS_ENUMERATE_WELL_KNOWN_SYMBOLS
 #undef __JS_ENUMERATE
@@ -269,7 +269,16 @@ class VM : public RefCounted<VM> {
     Function<ThrowCompletionOr<void>(Object&)> host_ensure_can_add_private_element;
 
 private:
-    explicit VM(OwnPtr<CustomData>);
+    using ErrorMessages = AK::Array<String, to_underlying(ErrorMessage::__Count)>;
+
+    struct WellKnownSymbols {
+#define __JS_ENUMERATE(SymbolName, snake_name) \
+    GCPtr<Symbol> snake_name;
+        JS_ENUMERATE_WELL_KNOWN_SYMBOLS
+#undef __JS_ENUMERATE
+    };
+
+    VM(OwnPtr<CustomData>, ErrorMessages);
 
     ThrowCompletionOr<void> property_binding_initialization(BindingPattern const& binding, Value value, Environment* environment);
     ThrowCompletionOr<void> iterator_binding_initialization(BindingPattern const& binding, Iterator& iterator_record, Environment* environment);
@@ -280,6 +289,8 @@ class VM : public RefCounted<VM> {
     ThrowCompletionOr<void> import_module_dynamically(ScriptOrModule referencing_script_or_module, ModuleRequest module_request, PromiseCapability const& promise_capability);
     void finish_dynamic_import(ScriptOrModule referencing_script_or_module, ModuleRequest module_request, PromiseCapability const& promise_capability, Promise* inner_promise);
 
+    void set_well_known_symbols(WellKnownSymbols well_known_symbols) { m_well_known_symbols = move(well_known_symbols); }
+
     HashMap<String, GCPtr<PrimitiveString>> m_string_cache;
     HashMap<DeprecatedString, GCPtr<PrimitiveString>> m_deprecated_string_cache;
 
@@ -301,7 +312,7 @@ class VM : public RefCounted<VM> {
 
     GCPtr<PrimitiveString> m_empty_string;
     GCPtr<PrimitiveString> m_single_ascii_character_strings[128] {};
-    AK::Array<String, to_underlying(ErrorMessage::__Count)> m_error_messages;
+    ErrorMessages m_error_messages;
 
     struct StoredModule {
         ScriptOrModule referencing_script_or_module;
@@ -315,10 +326,7 @@ class VM : public RefCounted<VM> {
 
     Vector<StoredModule> m_loaded_modules;
 
-#define __JS_ENUMERATE(SymbolName, snake_name) \
-    GCPtr<Symbol> m_well_known_symbol_##snake_name;
-    JS_ENUMERATE_WELL_KNOWN_SYMBOLS
-#undef __JS_ENUMERATE
+    WellKnownSymbols m_well_known_symbols;
 
     u32 m_execution_generation { 0 };"
80bb62b9cc4d1f4bc7ef8d88fbde05dd11a19f11,2020-10-23 22:43:06,Linus Groh,libjs: Distinguish between statement and declaration,False,Distinguish between statement and declaration,libjs,"diff --git a/Libraries/LibJS/AST.h b/Libraries/LibJS/AST.h
index 355377880f5b..dba379fb1e43 100644
--- a/Libraries/LibJS/AST.h
+++ b/Libraries/LibJS/AST.h
@@ -172,6 +172,12 @@ class Expression : public ASTNode {
 class Declaration : public Statement {
 };
 
+class ErrorDeclaration final : public Declaration {
+public:
+    Value execute(Interpreter&, GlobalObject&) const override { return js_undefined(); }
+    const char* class_name() const override { return ""ErrorDeclaration""; }
+};
+
 class FunctionNode {
 public:
     struct Parameter {
diff --git a/Libraries/LibJS/Parser.cpp b/Libraries/LibJS/Parser.cpp
index 893db52aadc0..51ea22e96b3f 100644
--- a/Libraries/LibJS/Parser.cpp
+++ b/Libraries/LibJS/Parser.cpp
@@ -241,7 +241,13 @@ NonnullRefPtr<Program> Parser::parse_program()
     bool first = true;
     m_parser_state.m_use_strict_directive = UseStrictDirectiveState::Looking;
     while (!done()) {
-        if (match_statement()) {
+        if (match_declaration()) {
+            program->append(parse_declaration());
+            if (first) {
+                first = false;
+                m_parser_state.m_use_strict_directive = UseStrictDirectiveState::None;
+            }
+        } else if (match_statement()) {
             program->append(parse_statement());
             if (first) {
                 if (m_parser_state.m_use_strict_directive == UseStrictDirectiveState::Found) {
@@ -252,7 +258,7 @@ NonnullRefPtr<Program> Parser::parse_program()
                 m_parser_state.m_use_strict_directive = UseStrictDirectiveState::None;
             }
         } else {
-            expected(""statement"");
+            expected(""statement or declaration"");
             consume();
         }
     }
@@ -266,7 +272,7 @@ NonnullRefPtr<Program> Parser::parse_program()
     return program;
 }
 
-NonnullRefPtr<Statement> Parser::parse_statement()
+NonnullRefPtr<Declaration> Parser::parse_declaration()
 {
     switch (m_parser_state.m_current_token.type()) {
     case TokenType::Class:
@@ -276,13 +282,24 @@ NonnullRefPtr<Statement> Parser::parse_statement()
         m_parser_state.m_function_scopes.last().append(declaration);
         return declaration;
     }
+    case TokenType::Let:
+    case TokenType::Const:
+        return parse_variable_declaration();
+    default:
+        expected(""declaration"");
+        consume();
+        return create_ast_node<ErrorDeclaration>();
+    }
+}
+
+NonnullRefPtr<Statement> Parser::parse_statement()
+{
+    switch (m_parser_state.m_current_token.type()) {
     case TokenType::CurlyOpen:
         return parse_block_statement();
     case TokenType::Return:
         return parse_return_statement();
     case TokenType::Var:
-    case TokenType::Let:
-    case TokenType::Const:
         return parse_variable_declaration();
     case TokenType::For:
         return parse_for_statement();
@@ -314,11 +331,13 @@ NonnullRefPtr<Statement> Parser::parse_statement()
                 return result.release_nonnull();
         }
         if (match_expression()) {
+            if (match(TokenType::Function))
+                syntax_error(""Function declaration not allowed in single-statement context"");
             auto expr = parse_expression(0);
             consume_or_insert_semicolon();
             return create_ast_node<ExpressionStatement>(move(expr));
         }
-        expected(""statement (missing switch case)"");
+        expected(""statement"");
         consume();
         return create_ast_node<ErrorStatement>();
     }
@@ -614,7 +633,7 @@ NonnullRefPtr<Expression> Parser::parse_primary_expression()
     case TokenType::New:
         return parse_new_expression();
     default:
-        expected(""primary expression (missing switch case)"");
+        expected(""primary expression"");
         consume();
         return create_ast_node<ErrorExpression>();
     }
@@ -676,7 +695,7 @@ NonnullRefPtr<Expression> Parser::parse_unary_prefixed_expression()
         consume();
         return create_ast_node<UnaryExpression>(UnaryOp::Delete, parse_expression(precedence, associativity));
     default:
-        expected(""primary expression (missing switch case)"");
+        expected(""primary expression"");
         consume();
         return create_ast_node<ErrorExpression>();
     }
@@ -1076,7 +1095,7 @@ NonnullRefPtr<Expression> Parser::parse_secondary_expression(NonnullRefPtr<Expre
     case TokenType::QuestionMark:
         return parse_conditional_expression(move(lhs));
     default:
-        expected(""secondary expression (missing switch case)"");
+        expected(""secondary expression"");
         consume();
         return create_ast_node<ErrorExpression>();
     }
@@ -1209,8 +1228,11 @@ NonnullRefPtr<BlockStatement> Parser::parse_block_statement(bool& is_strict)
     }
 
     while (!done() && !match(TokenType::CurlyClose)) {
-        if (match(TokenType::Semicolon)) {
-            consume();
+        if (match_declaration()) {
+            block->append(parse_declaration());
+
+            if (first && !initial_strict_mode_state)
+                m_parser_state.m_use_strict_directive = UseStrictDirectiveState::None;
         } else if (match_statement()) {
             block->append(parse_statement());
 
@@ -1222,7 +1244,7 @@ NonnullRefPtr<BlockStatement> Parser::parse_block_statement(bool& is_strict)
                 m_parser_state.m_use_strict_directive = UseStrictDirectiveState::None;
             }
         } else {
-            expected(""statement"");
+            expected(""statement or declaration"");
             consume();
         }
 
@@ -1508,8 +1530,14 @@ NonnullRefPtr<SwitchCase> Parser::parse_switch_case()
 
     NonnullRefPtrVector<Statement> consequent;
     TemporaryChange break_change(m_parser_state.m_in_break_context, true);
-    while (match_statement())
-        consequent.append(parse_statement());
+    for (;;) {
+        if (match_declaration())
+            consequent.append(parse_declaration());
+        else if (match_statement())
+            consequent.append(parse_statement());
+        else
+            break;
+    }
 
     return create_ast_node<SwitchCase>(move(test), move(consequent));
 }
@@ -1635,18 +1663,6 @@ bool Parser::match(TokenType type) const
     return m_parser_state.m_current_token.type() == type;
 }
 
-bool Parser::match_variable_declaration() const
-{
-    switch (m_parser_state.m_current_token.type()) {
-    case TokenType::Var:
-    case TokenType::Let:
-    case TokenType::Const:
-        return true;
-    default:
-        return false;
-    }
-}
-
 bool Parser::match_expression() const
 {
     auto type = m_parser_state.m_current_token.type();
@@ -1740,17 +1756,13 @@ bool Parser::match_statement() const
 {
     auto type = m_parser_state.m_current_token.type();
     return match_expression()
-        || type == TokenType::Function
         || type == TokenType::Return
-        || type == TokenType::Let
-        || type == TokenType::Class
         || type == TokenType::Do
         || type == TokenType::If
         || type == TokenType::Throw
         || type == TokenType::Try
         || type == TokenType::While
         || type == TokenType::For
-        || type == TokenType::Const
         || type == TokenType::CurlyOpen
         || type == TokenType::Switch
         || type == TokenType::Break
@@ -1760,6 +1772,23 @@ bool Parser::match_statement() const
         || type == TokenType::Semicolon;
 }
 
+bool Parser::match_declaration() const
+{
+    auto type = m_parser_state.m_current_token.type();
+    return type == TokenType::Function
+        || type == TokenType::Class
+        || type == TokenType::Const
+        || type == TokenType::Let;
+}
+
+bool Parser::match_variable_declaration() const
+{
+    auto type = m_parser_state.m_current_token.type();
+    return type == TokenType::Var
+        || type == TokenType::Let
+        || type == TokenType::Const;
+}
+
 bool Parser::match_identifier_name() const
 {
     return m_parser_state.m_current_token.is_identifier_name();
diff --git a/Libraries/LibJS/Parser.h b/Libraries/LibJS/Parser.h
index 2fd3c99b2212..007e8b6879c7 100644
--- a/Libraries/LibJS/Parser.h
+++ b/Libraries/LibJS/Parser.h
@@ -60,6 +60,7 @@ class Parser {
     NonnullRefPtr<FunctionNodeType> parse_function_node(u8 parse_options = FunctionNodeParseOptions::CheckForFunctionAndName);
     Vector<FunctionNode::Parameter> parse_function_parameters(int& function_length, u8 parse_options = 0);
 
+    NonnullRefPtr<Declaration> parse_declaration();
     NonnullRefPtr<Statement> parse_statement();
     NonnullRefPtr<BlockStatement> parse_block_statement();
     NonnullRefPtr<BlockStatement> parse_block_statement(bool& is_strict);
@@ -147,6 +148,7 @@ class Parser {
     bool match_unary_prefixed_expression() const;
     bool match_secondary_expression(Vector<TokenType> forbidden = {}) const;
     bool match_statement() const;
+    bool match_declaration() const;
     bool match_variable_declaration() const;
     bool match_identifier_name() const;
     bool match_property_key() const;
diff --git a/Libraries/LibJS/Tests/parser-declaration-in-single-statement-context.js b/Libraries/LibJS/Tests/parser-declaration-in-single-statement-context.js
new file mode 100644
index 000000000000..5e263427bc28
--- /dev/null
+++ b/Libraries/LibJS/Tests/parser-declaration-in-single-statement-context.js
@@ -0,0 +1,6 @@
+test(""Declaration in single-statement context is a syntax error"", () => {
+    expect(""if (0) const foo = 1"").not.toEval();
+    expect(""while (0) function foo() {}"").not.toEval();
+    expect(""for (var 0;;) class foo() {}"").not.toEval();
+    expect(""do let foo = 1 while (0)"").not.toEval();
+});"
251c063897d661e13eaf224dab766b43997a9e03,2023-02-18 05:22:47,Kenneth Myhra,libweb: Make factory method of DOM::DOMTokenList fallible,False,Make factory method of DOM::DOMTokenList fallible,libweb,"diff --git a/Userland/Libraries/LibWeb/DOM/DOMTokenList.cpp b/Userland/Libraries/LibWeb/DOM/DOMTokenList.cpp
index ff519dafeb58..aad7f31c7874 100644
--- a/Userland/Libraries/LibWeb/DOM/DOMTokenList.cpp
+++ b/Userland/Libraries/LibWeb/DOM/DOMTokenList.cpp
@@ -52,10 +52,10 @@ inline void replace_in_ordered_set(Vector<DeprecatedString>& set, StringView ite
 
 namespace Web::DOM {
 
-DOMTokenList* DOMTokenList::create(Element const& associated_element, DeprecatedFlyString associated_attribute)
+WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMTokenList>> DOMTokenList::create(Element const& associated_element, DeprecatedFlyString associated_attribute)
 {
     auto& realm = associated_element.realm();
-    return realm.heap().allocate<DOMTokenList>(realm, associated_element, move(associated_attribute)).release_allocated_value_but_fixme_should_propagate_errors();
+    return MUST_OR_THROW_OOM(realm.heap().allocate<DOMTokenList>(realm, associated_element, move(associated_attribute)));
 }
 
 // https://dom.spec.whatwg.org/#ref-for-domtokenlist%E2%91%A0%E2%91%A2
diff --git a/Userland/Libraries/LibWeb/DOM/DOMTokenList.h b/Userland/Libraries/LibWeb/DOM/DOMTokenList.h
index 60dda71782c9..79b2daac1ff8 100644
--- a/Userland/Libraries/LibWeb/DOM/DOMTokenList.h
+++ b/Userland/Libraries/LibWeb/DOM/DOMTokenList.h
@@ -23,7 +23,7 @@ class DOMTokenList final : public Bindings::LegacyPlatformObject {
     WEB_PLATFORM_OBJECT(DOMTokenList, Bindings::LegacyPlatformObject);
 
 public:
-    static DOMTokenList* create(Element const& associated_element, DeprecatedFlyString associated_attribute);
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMTokenList>> create(Element const& associated_element, DeprecatedFlyString associated_attribute);
     ~DOMTokenList() = default;
 
     void associated_attribute_changed(StringView value);
diff --git a/Userland/Libraries/LibWeb/DOM/Element.cpp b/Userland/Libraries/LibWeb/DOM/Element.cpp
index 614b4af169ad..69f1eabcb87f 100644
--- a/Userland/Libraries/LibWeb/DOM/Element.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Element.cpp
@@ -455,7 +455,7 @@ NonnullRefPtr<CSS::StyleProperties> Element::resolved_css_values()
 DOMTokenList* Element::class_list()
 {
     if (!m_class_list)
-        m_class_list = DOMTokenList::create(*this, HTML::AttributeNames::class_);
+        m_class_list = DOMTokenList::create(*this, HTML::AttributeNames::class_).release_value_but_fixme_should_propagate_errors();
     return m_class_list;
 }"
48b59aaeb1e66093bcc680c05c83e9a3d38173db,2022-07-18 19:27:58,Kenneth Myhra,libweb: Mark body argument of extract_body() as const reference,False,Mark body argument of extract_body() as const reference,libweb,"diff --git a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
index c8b78821dc85..2b4b0145b4b7 100644
--- a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
+++ b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
@@ -311,7 +311,7 @@ Optional<MimeSniff::MimeType> XMLHttpRequest::extract_mime_type(Fetch::HeaderLis
 }
 
 // https://fetch.spec.whatwg.org/#concept-bodyinit-extract
-static XMLHttpRequest::BodyWithType extract_body(XMLHttpRequestBodyInit& body)
+static XMLHttpRequest::BodyWithType extract_body(XMLHttpRequestBodyInit const& body)
 {
     if (body.has<NonnullRefPtr<URL::URLSearchParams>>()) {
         return {"
fdf03852c968f11b942376aa225248cdc26bd904,2021-02-20 00:53:05,Andreas Kling,kernel: Slap UNMAP_AFTER_INIT on a whole bunch of functions,False,Slap UNMAP_AFTER_INIT on a whole bunch of functions,kernel,"diff --git a/Kernel/Arch/i386/CPU.cpp b/Kernel/Arch/i386/CPU.cpp
index cc34e5dc5f23..64e377f439a9 100644
--- a/Kernel/Arch/i386/CPU.cpp
+++ b/Kernel/Arch/i386/CPU.cpp
@@ -454,24 +454,24 @@ void unregister_generic_interrupt_handler(u8 interrupt_number, GenericInterruptH
     ASSERT_NOT_REACHED();
 }
 
-void register_interrupt_handler(u8 index, void (*f)())
+UNMAP_AFTER_INIT void register_interrupt_handler(u8 index, void (*f)())
 {
     s_idt[index].low = 0x00080000 | LSW((f));
     s_idt[index].high = ((u32)(f)&0xffff0000) | 0x8e00;
 }
 
-void register_user_callable_interrupt_handler(u8 index, void (*f)())
+UNMAP_AFTER_INIT void register_user_callable_interrupt_handler(u8 index, void (*f)())
 {
     s_idt[index].low = 0x00080000 | LSW((f));
     s_idt[index].high = ((u32)(f)&0xffff0000) | 0xef00;
 }
 
-void flush_idt()
+UNMAP_AFTER_INIT void flush_idt()
 {
     asm(""lidt %0"" ::""m""(s_idtr));
 }
 
-static void idt_init()
+UNMAP_AFTER_INIT static void idt_init()
 {
     s_idtr.address = s_idt;
     s_idtr.limit = 256 * 8 - 1;
@@ -815,7 +815,7 @@ Processor& Processor::by_id(u32 cpu)
     }
 }
 
-void Processor::cpu_detect()
+UNMAP_AFTER_INIT void Processor::cpu_detect()
 {
     // NOTE: This is called during Processor::early_initialize, we cannot
     //       safely log at this point because we don't have kmalloc
@@ -900,7 +900,7 @@ void Processor::cpu_detect()
         set_feature(CPUFeature::RDSEED);
 }
 
-void Processor::cpu_setup()
+UNMAP_AFTER_INIT void Processor::cpu_setup()
 {
     // NOTE: This is called during Processor::early_initialize, we cannot
     //       safely log at this point because we don't have kmalloc
@@ -1013,7 +1013,7 @@ String Processor::features_string() const
     return builder.build();
 }
 
-void Processor::early_initialize(u32 cpu)
+UNMAP_AFTER_INIT void Processor::early_initialize(u32 cpu)
 {
     m_self = this;
 
@@ -1048,7 +1048,7 @@ void Processor::early_initialize(u32 cpu)
     ASSERT(&current() == this); // sanity check
 }
 
-void Processor::initialize(u32 cpu)
+UNMAP_AFTER_INIT void Processor::initialize(u32 cpu)
 {
     ASSERT(m_self == this);
     ASSERT(&current() == this); // sanity check
@@ -1774,7 +1774,7 @@ u32 Processor::smp_wake_n_idle_processors(u32 wake_count)
     return did_wake_count;
 }
 
-void Processor::smp_enable()
+UNMAP_AFTER_INIT void Processor::smp_enable()
 {
     size_t msg_pool_size = Processor::count() * 100u;
     size_t msg_entries_cnt = Processor::count();
@@ -2167,7 +2167,7 @@ void Processor::deferred_call_queue(void (*callback)(void*), void* data, void (*
     cur_proc.deferred_call_queue_entry(entry);
 }
 
-void Processor::gdt_init()
+UNMAP_AFTER_INIT void Processor::gdt_init()
 {
     m_gdt_length = 0;
     m_gdtr.address = nullptr;
diff --git a/Kernel/Console.cpp b/Kernel/Console.cpp
index 4efe2fec790b..3229281f717c 100644
--- a/Kernel/Console.cpp
+++ b/Kernel/Console.cpp
@@ -36,7 +36,7 @@
 static AK::Singleton<Console> s_the;
 static Kernel::SpinLock g_console_lock;
 
-void Console::initialize()
+UNMAP_AFTER_INIT void Console::initialize()
 {
     s_the.ensure_instance();
 }
@@ -51,7 +51,7 @@ bool Console::is_initialized()
     return s_the.is_initialized();
 }
 
-Console::Console()
+UNMAP_AFTER_INIT Console::Console()
     : CharacterDevice(5, 1)
 {
 }
diff --git a/Kernel/Devices/FullDevice.cpp b/Kernel/Devices/FullDevice.cpp
index cbe5ca0d1d9b..f68524f5b9ad 100644
--- a/Kernel/Devices/FullDevice.cpp
+++ b/Kernel/Devices/FullDevice.cpp
@@ -32,12 +32,12 @@
 
 namespace Kernel {
 
-FullDevice::FullDevice()
+UNMAP_AFTER_INIT FullDevice::FullDevice()
     : CharacterDevice(1, 7)
 {
 }
 
-FullDevice::~FullDevice()
+UNMAP_AFTER_INIT FullDevice::~FullDevice()
 {
 }
 
diff --git a/Kernel/Devices/I8042Controller.cpp b/Kernel/Devices/I8042Controller.cpp
index 8798ea1c49bf..451ee1b51384 100644
--- a/Kernel/Devices/I8042Controller.cpp
+++ b/Kernel/Devices/I8042Controller.cpp
@@ -33,7 +33,7 @@ namespace Kernel {
 
 static I8042Controller* s_the;
 
-void I8042Controller::initialize()
+UNMAP_AFTER_INIT void I8042Controller::initialize()
 {
     if (ACPI::Parser::the()->have_8042())
         new I8042Controller;
@@ -45,7 +45,7 @@ I8042Controller& I8042Controller::the()
     return *s_the;
 }
 
-I8042Controller::I8042Controller()
+UNMAP_AFTER_INIT I8042Controller::I8042Controller()
 {
     ASSERT(!s_the);
     s_the = this;
diff --git a/Kernel/Devices/NullDevice.cpp b/Kernel/Devices/NullDevice.cpp
index 260e8d9aa8b4..6b4d05c65349 100644
--- a/Kernel/Devices/NullDevice.cpp
+++ b/Kernel/Devices/NullDevice.cpp
@@ -42,12 +42,12 @@ NullDevice& NullDevice::the()
     return *s_the;
 }
 
-NullDevice::NullDevice()
+UNMAP_AFTER_INIT NullDevice::NullDevice()
     : CharacterDevice(1, 3)
 {
 }
 
-NullDevice::~NullDevice()
+UNMAP_AFTER_INIT NullDevice::~NullDevice()
 {
 }
 
diff --git a/Kernel/Devices/RandomDevice.cpp b/Kernel/Devices/RandomDevice.cpp
index 728e5456b4ae..69351535a7da 100644
--- a/Kernel/Devices/RandomDevice.cpp
+++ b/Kernel/Devices/RandomDevice.cpp
@@ -29,12 +29,12 @@
 
 namespace Kernel {
 
-RandomDevice::RandomDevice()
+UNMAP_AFTER_INIT RandomDevice::RandomDevice()
     : CharacterDevice(1, 8)
 {
 }
 
-RandomDevice::~RandomDevice()
+UNMAP_AFTER_INIT RandomDevice::~RandomDevice()
 {
 }
 
diff --git a/Kernel/Devices/ZeroDevice.cpp b/Kernel/Devices/ZeroDevice.cpp
index f0b0302f6428..299ecaac3afe 100644
--- a/Kernel/Devices/ZeroDevice.cpp
+++ b/Kernel/Devices/ZeroDevice.cpp
@@ -30,12 +30,12 @@
 
 namespace Kernel {
 
-ZeroDevice::ZeroDevice()
+UNMAP_AFTER_INIT ZeroDevice::ZeroDevice()
     : CharacterDevice(1, 5)
 {
 }
 
-ZeroDevice::~ZeroDevice()
+UNMAP_AFTER_INIT ZeroDevice::~ZeroDevice()
 {
 }
 
diff --git a/Kernel/FileSystem/VirtualFileSystem.cpp b/Kernel/FileSystem/VirtualFileSystem.cpp
index d71933b617e9..d7fc8fa278bb 100644
--- a/Kernel/FileSystem/VirtualFileSystem.cpp
+++ b/Kernel/FileSystem/VirtualFileSystem.cpp
@@ -44,7 +44,7 @@ static AK::Singleton<VFS> s_the;
 static constexpr int symlink_recursion_limit { 5 }; // FIXME: increase?
 static constexpr int root_mount_flags = MS_NODEV | MS_NOSUID | MS_RDONLY;
 
-void VFS::initialize()
+UNMAP_AFTER_INIT void VFS::initialize()
 {
     s_the.ensure_instance();
 }
@@ -54,14 +54,14 @@ VFS& VFS::the()
     return *s_the;
 }
 
-VFS::VFS()
+UNMAP_AFTER_INIT VFS::VFS()
 {
 #if VFS_DEBUG
     klog() << ""VFS: Constructing VFS"";
 #endif
 }
 
-VFS::~VFS()
+UNMAP_AFTER_INIT VFS::~VFS()
 {
 }
 
diff --git a/Kernel/Heap/SlabAllocator.cpp b/Kernel/Heap/SlabAllocator.cpp
index 47e913978a9e..55720013c4f5 100644
--- a/Kernel/Heap/SlabAllocator.cpp
+++ b/Kernel/Heap/SlabAllocator.cpp
@@ -141,7 +141,7 @@ void for_each_allocator(Callback callback)
     callback(s_slab_allocator_128);
 }
 
-void slab_alloc_init()
+UNMAP_AFTER_INIT void slab_alloc_init()
 {
     s_slab_allocator_16.init(128 * KiB);
     s_slab_allocator_32.init(128 * KiB);
diff --git a/Kernel/Heap/kmalloc.cpp b/Kernel/Heap/kmalloc.cpp
index 6b17a52538b5..e2697dfa468c 100644
--- a/Kernel/Heap/kmalloc.cpp
+++ b/Kernel/Heap/kmalloc.cpp
@@ -211,7 +211,7 @@ void kmalloc_enable_expand()
     g_kmalloc_global->allocate_backup_memory();
 }
 
-void kmalloc_init()
+UNMAP_AFTER_INIT void kmalloc_init()
 {
     // Zero out heap since it's placed after end_of_kernel_bss.
     memset(kmalloc_eternal_heap, 0, sizeof(kmalloc_eternal_heap));
diff --git a/Kernel/Interrupts/APIC.cpp b/Kernel/Interrupts/APIC.cpp
index 0350e7284ef7..888ec06761ed 100644
--- a/Kernel/Interrupts/APIC.cpp
+++ b/Kernel/Interrupts/APIC.cpp
@@ -146,7 +146,7 @@ APIC& APIC::the()
     return *s_apic;
 }
 
-void APIC::initialize()
+UNMAP_AFTER_INIT void APIC::initialize()
 {
     ASSERT(!APIC::initialized());
     s_apic.ensure_instance();
@@ -234,7 +234,7 @@ u8 APIC::spurious_interrupt_vector()
         + reinterpret_cast<ptrdiff_t>(&varname)                        \
         - reinterpret_cast<ptrdiff_t>(&apic_ap_start))
 
-bool APIC::init_bsp()
+UNMAP_AFTER_INIT bool APIC::init_bsp()
 {
     // FIXME: Use the ACPI MADT table
     if (!MSR::have())
@@ -300,7 +300,7 @@ bool APIC::init_bsp()
     return true;
 }
 
-void APIC::do_boot_aps()
+UNMAP_AFTER_INIT void APIC::do_boot_aps()
 {
     ASSERT(m_processor_enabled_cnt > 1);
     u32 aps_to_enable = m_processor_enabled_cnt - 1;
@@ -400,7 +400,7 @@ void APIC::do_boot_aps()
 #endif
 }
 
-void APIC::boot_aps()
+UNMAP_AFTER_INIT void APIC::boot_aps()
 {
     if (m_processor_enabled_cnt <= 1)
         return;
@@ -421,7 +421,7 @@ void APIC::boot_aps()
     m_apic_ap_continue.store(1, AK::MemoryOrder::memory_order_release);
 }
 
-void APIC::enable(u32 cpu)
+UNMAP_AFTER_INIT void APIC::enable(u32 cpu)
 {
     if (cpu >= 8) {
         // TODO: x2apic support?
@@ -472,7 +472,7 @@ Thread* APIC::get_idle_thread(u32 cpu) const
     return m_ap_idle_threads[cpu - 1];
 }
 
-void APIC::init_finished(u32 cpu)
+UNMAP_AFTER_INIT void APIC::init_finished(u32 cpu)
 {
     // This method is called once the boot stack is no longer needed
     ASSERT(cpu > 0);
@@ -525,7 +525,7 @@ void APIC::send_ipi(u32 cpu)
     write_icr(ICRReg(IRQ_APIC_IPI + IRQ_VECTOR_BASE, ICRReg::Fixed, ICRReg::Logical, ICRReg::Assert, ICRReg::TriggerMode::Edge, ICRReg::NoShorthand, cpu));
 }
 
-APICTimer* APIC::initialize_timers(HardwareTimerBase& calibration_timer)
+UNMAP_AFTER_INIT APICTimer* APIC::initialize_timers(HardwareTimerBase& calibration_timer)
 {
     if (!m_apic_base)
         return nullptr;
diff --git a/Kernel/Interrupts/InterruptManagement.cpp b/Kernel/Interrupts/InterruptManagement.cpp
index 55878dc9eb61..e0f43b8ae3a4 100644
--- a/Kernel/Interrupts/InterruptManagement.cpp
+++ b/Kernel/Interrupts/InterruptManagement.cpp
@@ -56,7 +56,7 @@ InterruptManagement& InterruptManagement::the()
     return *s_interrupt_management;
 }
 
-void InterruptManagement::initialize()
+UNMAP_AFTER_INIT void InterruptManagement::initialize()
 {
     ASSERT(!InterruptManagement::initialized());
     s_interrupt_management = new InterruptManagement();
@@ -125,7 +125,7 @@ RefPtr<IRQController> InterruptManagement::get_responsible_irq_controller(u8 int
     ASSERT_NOT_REACHED();
 }
 
-PhysicalAddress InterruptManagement::search_for_madt()
+UNMAP_AFTER_INIT PhysicalAddress InterruptManagement::search_for_madt()
 {
     dbgln(""Early access to ACPI tables for interrupt setup"");
     auto rsdp = ACPI::StaticParsing::find_rsdp();
@@ -134,13 +134,13 @@ PhysicalAddress InterruptManagement::search_for_madt()
     return ACPI::StaticParsing::find_table(rsdp.value(), ""APIC"");
 }
 
-InterruptManagement::InterruptManagement()
+UNMAP_AFTER_INIT InterruptManagement::InterruptManagement()
     : m_madt(search_for_madt())
 {
     m_interrupt_controllers.resize(1);
 }
 
-void InterruptManagement::switch_to_pic_mode()
+UNMAP_AFTER_INIT void InterruptManagement::switch_to_pic_mode()
 {
     klog() << ""Interrupts: Switch to Legacy PIC mode"";
     InterruptDisabler disabler;
@@ -159,7 +159,7 @@ void InterruptManagement::switch_to_pic_mode()
     }
 }
 
-void InterruptManagement::switch_to_ioapic_mode()
+UNMAP_AFTER_INIT void InterruptManagement::switch_to_ioapic_mode()
 {
     klog() << ""Interrupts: Switch to IOAPIC mode"";
     InterruptDisabler disabler;
@@ -196,7 +196,7 @@ void InterruptManagement::switch_to_ioapic_mode()
     APIC::the().init_bsp();
 }
 
-void InterruptManagement::locate_apic_data()
+UNMAP_AFTER_INIT void InterruptManagement::locate_apic_data()
 {
     ASSERT(!m_madt.is_null());
     auto madt = map_typed<ACPI::Structures::MADT>(m_madt);
diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index d1675c2ee817..973b9a06eba2 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -78,7 +78,7 @@ ProcessID Process::allocate_pid()
     return next_pid.fetch_add(1, AK::MemoryOrder::memory_order_acq_rel);
 }
 
-void Process::initialize()
+UNMAP_AFTER_INIT void Process::initialize()
 {
     g_modules = new HashMap<String, OwnPtr<Module>>;
 
diff --git a/Kernel/Scheduler.cpp b/Kernel/Scheduler.cpp
index 62cadec3f72e..de785601f93b 100644
--- a/Kernel/Scheduler.cpp
+++ b/Kernel/Scheduler.cpp
@@ -168,7 +168,7 @@ void Scheduler::queue_runnable_thread(Thread& thread)
         g_ready_queues_mask |= (1u << priority);
 }
 
-void Scheduler::start()
+UNMAP_AFTER_INIT void Scheduler::start()
 {
     ASSERT_INTERRUPTS_DISABLED();
 
@@ -488,7 +488,7 @@ Process* Scheduler::colonel()
     return s_colonel_process;
 }
 
-void Scheduler::initialize()
+UNMAP_AFTER_INIT void Scheduler::initialize()
 {
     ASSERT(&Processor::current() != nullptr); // sanity check
 
diff --git a/Kernel/TTY/PTYMultiplexer.cpp b/Kernel/TTY/PTYMultiplexer.cpp
index cef533d6a01c..dc0c24d4fb1c 100644
--- a/Kernel/TTY/PTYMultiplexer.cpp
+++ b/Kernel/TTY/PTYMultiplexer.cpp
@@ -42,7 +42,7 @@ PTYMultiplexer& PTYMultiplexer::the()
     return *s_the;
 }
 
-PTYMultiplexer::PTYMultiplexer()
+UNMAP_AFTER_INIT PTYMultiplexer::PTYMultiplexer()
     : CharacterDevice(5, 2)
 {
     m_freelist.ensure_capacity(s_max_pty_pairs);
@@ -50,7 +50,7 @@ PTYMultiplexer::PTYMultiplexer()
         m_freelist.unchecked_append(i - 1);
 }
 
-PTYMultiplexer::~PTYMultiplexer()
+UNMAP_AFTER_INIT PTYMultiplexer::~PTYMultiplexer()
 {
 }
 
diff --git a/Kernel/TTY/VirtualConsole.cpp b/Kernel/TTY/VirtualConsole.cpp
index 47d6ae9e60bb..5fa2e52141c2 100644
--- a/Kernel/TTY/VirtualConsole.cpp
+++ b/Kernel/TTY/VirtualConsole.cpp
@@ -49,7 +49,7 @@ void VirtualConsole::flush_vga_cursor()
     IO::out8(0x3d5, LSB(value));
 }
 
-void VirtualConsole::initialize()
+UNMAP_AFTER_INIT void VirtualConsole::initialize()
 {
     s_vga_buffer = (u8*)0xc00b8000;
     s_active_console = -1;
@@ -63,7 +63,7 @@ void VirtualConsole::set_graphical(bool graphical)
     m_graphical = graphical;
 }
 
-VirtualConsole::VirtualConsole(const unsigned index)
+UNMAP_AFTER_INIT VirtualConsole::VirtualConsole(const unsigned index)
     : TTY(4, index)
     , m_index(index)
     , m_terminal(*this)
@@ -76,7 +76,7 @@ VirtualConsole::VirtualConsole(const unsigned index)
     s_consoles[index] = this;
 }
 
-VirtualConsole::~VirtualConsole()
+UNMAP_AFTER_INIT VirtualConsole::~VirtualConsole()
 {
     ASSERT_NOT_REACHED();
 }
diff --git a/Kernel/Thread.cpp b/Kernel/Thread.cpp
index 891a5672fe27..b906bcb48383 100644
--- a/Kernel/Thread.cpp
+++ b/Kernel/Thread.cpp
@@ -48,7 +48,7 @@ namespace Kernel {
 SpinLock<u8> Thread::g_tid_map_lock;
 READONLY_AFTER_INIT HashMap<ThreadID, Thread*>* Thread::g_tid_map;
 
-void Thread::initialize()
+UNMAP_AFTER_INIT void Thread::initialize()
 {
     g_tid_map = new HashMap<ThreadID, Thread*>();
 }
diff --git a/Kernel/Time/APICTimer.cpp b/Kernel/Time/APICTimer.cpp
index 2b0a80e24fec..a7bf3052a66a 100644
--- a/Kernel/Time/APICTimer.cpp
+++ b/Kernel/Time/APICTimer.cpp
@@ -36,7 +36,7 @@ namespace Kernel {
 
 #define APIC_TIMER_MEASURE_CPU_CLOCK
 
-APICTimer* APICTimer::initialize(u8 interrupt_number, HardwareTimerBase& calibration_source)
+UNMAP_AFTER_INIT APICTimer* APICTimer::initialize(u8 interrupt_number, HardwareTimerBase& calibration_source)
 {
     auto* timer = new APICTimer(interrupt_number, nullptr);
     if (!timer->calibrate(calibration_source)) {
@@ -46,13 +46,13 @@ APICTimer* APICTimer::initialize(u8 interrupt_number, HardwareTimerBase& calibra
     return timer;
 }
 
-APICTimer::APICTimer(u8 interrupt_number, Function<void(const RegisterState&)> callback)
+UNMAP_AFTER_INIT APICTimer::APICTimer(u8 interrupt_number, Function<void(const RegisterState&)> callback)
     : HardwareTimer<GenericInterruptHandler>(interrupt_number, move(callback))
 {
     disable_remap();
 }
 
-bool APICTimer::calibrate(HardwareTimerBase& calibration_source)
+UNMAP_AFTER_INIT bool APICTimer::calibrate(HardwareTimerBase& calibration_source)
 {
     ASSERT_INTERRUPTS_DISABLED();
 
diff --git a/Kernel/Time/TimeManagement.cpp b/Kernel/Time/TimeManagement.cpp
index 1ac2a4b1cd83..aaf336b833b8 100644
--- a/Kernel/Time/TimeManagement.cpp
+++ b/Kernel/Time/TimeManagement.cpp
@@ -145,7 +145,7 @@ u64 TimeManagement::uptime_ms() const
     return ms;
 }
 
-void TimeManagement::initialize(u32 cpu)
+UNMAP_AFTER_INIT void TimeManagement::initialize(u32 cpu)
 {
     if (cpu == 0) {
         ASSERT(!s_the.is_initialized());
@@ -187,7 +187,7 @@ time_t TimeManagement::boot_time() const
     return RTC::boot_time();
 }
 
-TimeManagement::TimeManagement()
+UNMAP_AFTER_INIT TimeManagement::TimeManagement()
 {
     bool probe_non_legacy_hardware_timers = !(kernel_command_line().lookup(""time"").value_or(""modern"") == ""legacy"");
     if (ACPI::is_enabled()) {
@@ -255,7 +255,7 @@ bool TimeManagement::is_hpet_periodic_mode_allowed()
     ASSERT_NOT_REACHED();
 }
 
-bool TimeManagement::probe_and_set_non_legacy_hardware_timers()
+UNMAP_AFTER_INIT bool TimeManagement::probe_and_set_non_legacy_hardware_timers()
 {
     if (!ACPI::is_enabled())
         return false;
@@ -309,7 +309,7 @@ bool TimeManagement::probe_and_set_non_legacy_hardware_timers()
     return true;
 }
 
-bool TimeManagement::probe_and_set_legacy_hardware_timers()
+UNMAP_AFTER_INIT bool TimeManagement::probe_and_set_legacy_hardware_timers()
 {
     if (ACPI::is_enabled()) {
         if (ACPI::Parser::the()->x86_specific_flags().cmos_rtc_not_present) {
diff --git a/Kernel/VM/MemoryManager.cpp b/Kernel/VM/MemoryManager.cpp
index b780f826556e..90e764575d4a 100644
--- a/Kernel/VM/MemoryManager.cpp
+++ b/Kernel/VM/MemoryManager.cpp
@@ -81,7 +81,7 @@ bool MemoryManager::is_initialized()
     return s_the != nullptr;
 }
 
-MemoryManager::MemoryManager()
+UNMAP_AFTER_INIT MemoryManager::MemoryManager()
 {
     ScopedSpinLock lock(s_mm_lock);
     m_kernel_page_directory = PageDirectory::create_kernel_page_directory();
@@ -104,11 +104,11 @@ MemoryManager::MemoryManager()
     m_lazy_committed_page = allocate_committed_user_physical_page();
 }
 
-MemoryManager::~MemoryManager()
+UNMAP_AFTER_INIT MemoryManager::~MemoryManager()
 {
 }
 
-void MemoryManager::protect_kernel_image()
+UNMAP_AFTER_INIT void MemoryManager::protect_kernel_image()
 {
     ScopedSpinLock page_lock(kernel_page_directory().get_lock());
     // Disable writing to the kernel text and rodata segments.
@@ -125,7 +125,7 @@ void MemoryManager::protect_kernel_image()
     }
 }
 
-void MemoryManager::protect_readonly_after_init_memory()
+UNMAP_AFTER_INIT void MemoryManager::protect_readonly_after_init_memory()
 {
     ScopedSpinLock mm_lock(s_mm_lock);
     ScopedSpinLock page_lock(kernel_page_directory().get_lock());
@@ -153,9 +153,10 @@ void MemoryManager::unmap_memory_after_init()
     }
 
     dmesgln(""Unmapped {} KiB of kernel text after init! :^)"", (end - start) / KiB);
+    //Processor::halt();
 }
 
-void MemoryManager::register_reserved_ranges()
+UNMAP_AFTER_INIT void MemoryManager::register_reserved_ranges()
 {
     ASSERT(!m_physical_memory_ranges.is_empty());
     ContiguousReservedMemoryRange range;
@@ -194,7 +195,7 @@ bool MemoryManager::is_allowed_to_mmap_to_userspace(PhysicalAddress start_addres
     return false;
 }
 
-void MemoryManager::parse_memory_map()
+UNMAP_AFTER_INIT void MemoryManager::parse_memory_map()
 {
     RefPtr<PhysicalRegion> physical_region;
 
@@ -414,7 +415,7 @@ void MemoryManager::release_pte(PageDirectory& page_directory, VirtualAddress va
     }
 }
 
-void MemoryManager::initialize(u32 cpu)
+UNMAP_AFTER_INIT void MemoryManager::initialize(u32 cpu)
 {
     auto mm_data = new MemoryManagerData;
     Processor::current().set_mm_data(*mm_data);
diff --git a/Kernel/VM/PageDirectory.cpp b/Kernel/VM/PageDirectory.cpp
index 19f4a6836ddf..5bc207c76153 100644
--- a/Kernel/VM/PageDirectory.cpp
+++ b/Kernel/VM/PageDirectory.cpp
@@ -54,7 +54,7 @@ extern ""C"" PageDirectoryEntry* boot_pdpt[4];
 extern ""C"" PageDirectoryEntry boot_pd0[1024];
 extern ""C"" PageDirectoryEntry boot_pd3[1024];
 
-PageDirectory::PageDirectory()
+UNMAP_AFTER_INIT PageDirectory::PageDirectory()
 {
     m_range_allocator.initialize_with_range(VirtualAddress(0xc0800000), 0x3f000000);
     m_identity_range_allocator.initialize_with_range(VirtualAddress(FlatPtr(0x00000000)), 0x00200000);
diff --git a/Kernel/init.cpp b/Kernel/init.cpp
index 002a0a6841ac..fff7ec64b7de 100644
--- a/Kernel/init.cpp
+++ b/Kernel/init.cpp
@@ -116,7 +116,7 @@ static Processor s_bsp_processor; // global but let's keep it ""private""
 // Once multi-tasking is ready, we spawn a new thread that starts in the
 // init_stage2() function. Initialization continues there.
 
-extern ""C"" [[noreturn]] void init()
+extern ""C"" UNMAP_AFTER_INIT [[noreturn]] void init()
 {
     setup_serial_debug();
 
@@ -196,7 +196,7 @@ extern ""C"" [[noreturn]] void init()
 //
 // The purpose of init_ap() is to initialize APs for multi-tasking.
 //
-extern ""C"" [[noreturn]] void init_ap(u32 cpu, Processor* processor_info)
+extern ""C"" UNMAP_AFTER_INIT [[noreturn]] void init_ap(u32 cpu, Processor* processor_info)
 {
     processor_info->early_initialize(cpu);
 
@@ -213,7 +213,7 @@ extern ""C"" [[noreturn]] void init_ap(u32 cpu, Processor* processor_info)
 // This method is called once a CPU enters the scheduler and its idle thread
 // At this point the initial boot stack can be freed
 //
-extern ""C"" void init_finished(u32 cpu)
+extern ""C"" UNMAP_AFTER_INIT void init_finished(u32 cpu)
 {
     if (cpu == 0) {
         // TODO: we can reuse the boot stack, maybe for kmalloc()?
@@ -323,7 +323,7 @@ void init_stage2(void*)
     ASSERT_NOT_REACHED();
 }
 
-void setup_serial_debug()
+UNMAP_AFTER_INIT void setup_serial_debug()
 {
     // serial_debug will output all the klog() and dbgln() data to COM1 at
     // 8-N-1 57600 baud. this is particularly useful for debugging the boot"
bf16349c5b8490a0bf944e960f4c813c9e605c47,2022-02-17 15:27:17,Daniel Bertalan,libweb: Fix -Wmismatched-tags warning from Clang,False,Fix -Wmismatched-tags warning from Clang,libweb,"diff --git a/Userland/Libraries/LibWeb/DOM/DOMEventListener.h b/Userland/Libraries/LibWeb/DOM/DOMEventListener.h
index cc26636195fe..bee4fdbbdc46 100644
--- a/Userland/Libraries/LibWeb/DOM/DOMEventListener.h
+++ b/Userland/Libraries/LibWeb/DOM/DOMEventListener.h
@@ -13,7 +13,8 @@ namespace Web::DOM {
 
 // https://dom.spec.whatwg.org/#concept-event-listener
 // NOTE: The spec calls this ""event listener"", and it's *importantly* not the same as ""EventListener""
-struct DOMEventListener : RefCounted<DOMEventListener> {
+class DOMEventListener : RefCounted<DOMEventListener> {
+public:
     DOMEventListener();
     ~DOMEventListener();"
62daa6f73c817044b254176a0af314a6a0e68ccd,2020-06-26 21:57:12,Andreas Kling,libweb: Add the 'float' CSS property to LayoutStyle,False,Add the 'float' CSS property to LayoutStyle,libweb,"diff --git a/Libraries/LibWeb/CSS/StyleProperties.cpp b/Libraries/LibWeb/CSS/StyleProperties.cpp
index 4b57e0928fdb..d241ac2dae80 100644
--- a/Libraries/LibWeb/CSS/StyleProperties.cpp
+++ b/Libraries/LibWeb/CSS/StyleProperties.cpp
@@ -263,6 +263,21 @@ Optional<CSS::WhiteSpace> StyleProperties::white_space() const
     return {};
 }
 
+Optional<CSS::Float> StyleProperties::float_() const
+{
+    auto value = property(CSS::PropertyID::Float);
+    if (!value.has_value() || !value.value()->is_string())
+        return {};
+    auto string = value.value()->to_string();
+    if (string == ""none"")
+        return CSS::Float::None;
+    if (string == ""left"")
+        return CSS::Float::Left;
+    if (string == ""right"")
+        return CSS::Float::Right;
+    return {};
+}
+
 CSS::Display StyleProperties::display() const
 {
     auto display = string_or_fallback(CSS::PropertyID::Display, ""inline"");
diff --git a/Libraries/LibWeb/CSS/StyleProperties.h b/Libraries/LibWeb/CSS/StyleProperties.h
index 13d3a3c84e63..b95684a0bf6e 100644
--- a/Libraries/LibWeb/CSS/StyleProperties.h
+++ b/Libraries/LibWeb/CSS/StyleProperties.h
@@ -62,6 +62,7 @@ class StyleProperties : public RefCounted<StyleProperties> {
     Color color_or_fallback(CSS::PropertyID, const Document&, Color fallback) const;
     CSS::TextAlign text_align() const;
     CSS::Display display() const;
+    Optional<CSS::Float> float_() const;
     Optional<CSS::WhiteSpace> white_space() const;
 
     const Gfx::Font& font() const
diff --git a/Libraries/LibWeb/CSS/StyleValue.h b/Libraries/LibWeb/CSS/StyleValue.h
index 3b44181d266a..257cb29c64d1 100644
--- a/Libraries/LibWeb/CSS/StyleValue.h
+++ b/Libraries/LibWeb/CSS/StyleValue.h
@@ -143,6 +143,12 @@ enum class WhiteSpace {
     PreWrap,
 };
 
+enum class Float {
+    None,
+    Left,
+    Right,
+};
+
 }
 
 class StyleValue : public RefCounted<StyleValue> {
diff --git a/Libraries/LibWeb/Layout/LayoutNode.cpp b/Libraries/LibWeb/Layout/LayoutNode.cpp
index 3c6ab3313e59..a410c930a5f3 100644
--- a/Libraries/LibWeb/Layout/LayoutNode.cpp
+++ b/Libraries/LibWeb/Layout/LayoutNode.cpp
@@ -181,6 +181,13 @@ Gfx::FloatPoint LayoutNode::box_type_agnostic_position() const
     return position;
 }
 
+bool LayoutNode::is_floating() const
+{
+    if (!has_style())
+        return false;
+    return style().float_() != CSS::Float::None;
+}
+
 bool LayoutNode::is_absolutely_positioned() const
 {
     if (!has_style())
@@ -216,6 +223,10 @@ void LayoutNodeWithStyle::apply_style(const StyleProperties& specified_style)
     if (white_space.has_value())
         style.set_white_space(white_space.value());
 
+    auto float_ = specified_style.float_();
+    if (float_.has_value())
+        style.set_float(float_.value());
+
     style.set_z_index(specified_style.z_index());
     style.set_width(specified_style.length_or_fallback(CSS::PropertyID::Width, {}));
     style.set_min_width(specified_style.length_or_fallback(CSS::PropertyID::MinWidth, {}));
diff --git a/Libraries/LibWeb/Layout/LayoutNode.h b/Libraries/LibWeb/Layout/LayoutNode.h
index d48a7ddb7b14..cb5ccc08e6ed 100644
--- a/Libraries/LibWeb/Layout/LayoutNode.h
+++ b/Libraries/LibWeb/Layout/LayoutNode.h
@@ -181,6 +181,7 @@ class LayoutNode : public TreeNode<LayoutNode> {
     };
     virtual void paint(PaintContext&, PaintPhase);
 
+    bool is_floating() const;
     bool is_absolutely_positioned() const;
     bool is_fixed_position() const;
 
diff --git a/Libraries/LibWeb/Layout/LayoutStyle.h b/Libraries/LibWeb/Layout/LayoutStyle.h
index 3dfe08ae4b26..5fb42325e105 100644
--- a/Libraries/LibWeb/Layout/LayoutStyle.h
+++ b/Libraries/LibWeb/Layout/LayoutStyle.h
@@ -34,6 +34,7 @@ namespace Web {
 
 class InitialValues {
 public:
+    static CSS::Float float_() { return CSS::Float::None; }
     static CSS::WhiteSpace white_space() { return CSS::WhiteSpace::Normal; }
 };
 
@@ -45,6 +46,7 @@ struct BorderData {
 
 class LayoutStyle {
 public:
+    CSS::Float float_() const { return m_float; }
     Optional<int> z_index() const { return m_z_index; }
     CSS::TextAlign text_align() const { return m_text_align; }
     CSS::Position position() const { return m_position; }
@@ -66,6 +68,7 @@ class LayoutStyle {
     const BorderData& border_bottom() const { return m_border_bottom; }
 
 protected:
+    CSS::Float m_float { InitialValues::float_() };
     Optional<int> m_z_index;
     CSS::TextAlign m_text_align;
     CSS::Position m_position;
@@ -90,6 +93,7 @@ class ImmutableLayoutStyle final : public LayoutStyle {
 
 class MutableLayoutStyle final : public LayoutStyle {
 public:
+    void set_float(CSS::Float value) { m_float = value; }
     void set_z_index(Optional<int> value) { m_z_index = value; }
     void set_text_align(CSS::TextAlign text_align) { m_text_align = text_align; }
     void set_position(CSS::Position position) { m_position = position; }"
ba92c07a7577176918348134dd3cca8e92822e1a,2019-05-18 06:27:38,Robin Burchell,kernel: Make sure to clear FD sets when preparing for a select,False,Make sure to clear FD sets when preparing for a select,kernel,"diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index ea5cd6493540..c91d5c1e8741 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -1751,9 +1751,9 @@ int Process::sys$select(const Syscall::SC_select_params* params)
     // FIXME: Return -EINVAL if timeout is invalid.
 
     auto transfer_fds = [this, nfds] (fd_set* set, auto& vector) -> int {
+        vector.clear_with_capacity();
         if (!set)
             return 0;
-        vector.clear_with_capacity();
         auto bitmap = Bitmap::wrap((byte*)set, FD_SETSIZE);
         for (int i = 0; i < nfds; ++i) {
             if (bitmap.get(i)) {"
7b82334e2f9b6705f1cf62e8920a117c38b1e92f,2020-08-07 00:11:13,Linus Groh,userland: Use Core::ArgsParser for 'rmdir',False,Use Core::ArgsParser for 'rmdir',userland,"diff --git a/Userland/rmdir.cpp b/Userland/rmdir.cpp
index c72d0b06a6a0..4d321bb9ab3f 100644
--- a/Userland/rmdir.cpp
+++ b/Userland/rmdir.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <LibCore/ArgsParser.h>
 #include <errno.h>
 #include <stdio.h>
 #include <unistd.h>
@@ -35,11 +36,13 @@ int main(int argc, char** argv)
         return 1;
     }
 
-    if (argc != 2) {
-        fprintf(stderr, ""usage: rmdir <path>\n"");
-        return 1;
-    }
-    int rc = rmdir(argv[1]);
+    const char* path;
+
+    Core::ArgsParser args_parser;
+    args_parser.add_positional_argument(path, ""Directory to remove"", ""path"");
+    args_parser.parse(argc, argv);
+
+    int rc = rmdir(path);
     if (rc < 0) {
         perror(""rmdir"");
         return 1;"
33c0dc08a7780a7af7955efeca14dcdd9eab8527,2020-01-13 00:32:11,Sergey Bugaev,kernel: Don't forget to copy & destroy root_directory_for_procfs,False,Don't forget to copy & destroy root_directory_for_procfs,kernel,"diff --git a/Kernel/FileSystem/ProcFS.cpp b/Kernel/FileSystem/ProcFS.cpp
index e14c8d65ba6a..0d184962433e 100644
--- a/Kernel/FileSystem/ProcFS.cpp
+++ b/Kernel/FileSystem/ProcFS.cpp
@@ -577,7 +577,7 @@ Optional<KBuffer> procfs$pid_root(InodeIdentifier identifier)
     auto handle = ProcessInspectionHandle::from_pid(to_pid(identifier));
     if (!handle)
         return {};
-    return handle->process().root_directory_for_procfs().absolute_path().to_byte_buffer();
+    return handle->process().root_directory_relative_to_global_root().absolute_path().to_byte_buffer();
 }
 
 Optional<KBuffer> procfs$self(InodeIdentifier)
diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index 8f5800728c5b..3fb0cac1a812 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -578,6 +578,7 @@ pid_t Process::sys$fork(RegisterDump& regs)
     Thread* child_first_thread = nullptr;
     auto* child = new Process(child_first_thread, m_name, m_uid, m_gid, m_pid, m_ring, m_cwd, m_executable, m_tty, this);
     child->m_root_directory = m_root_directory;
+    child->m_root_directory_relative_to_global_root = m_root_directory_relative_to_global_root;
     child->m_promises = m_promises;
     child->m_execpromises = m_execpromises;
 
@@ -2769,6 +2770,7 @@ void Process::finalize()
     m_executable = nullptr;
     m_cwd = nullptr;
     m_root_directory = nullptr;
+    m_root_directory_relative_to_global_root = nullptr;
     m_elf_loader = nullptr;
 
     disown_all_shared_buffers();
@@ -4325,7 +4327,7 @@ int Process::sys$set_process_boost(pid_t pid, int amount)
     return 0;
 }
 
-int Process::sys$chroot(const char* user_path, size_t path_length)
+int Process::sys$chroot(const char* user_path, size_t path_length, int mount_flags)
 {
     if (!is_superuser())
         return -EPERM;
@@ -4350,11 +4352,11 @@ Custody& Process::root_directory()
     return *m_root_directory;
 }
 
-Custody& Process::root_directory_for_procfs()
+Custody& Process::root_directory_relative_to_global_root()
 {
-    if (!m_root_directory_for_procfs)
-        m_root_directory_for_procfs = root_directory();
-    return *m_root_directory_for_procfs;
+    if (!m_root_directory_relative_to_global_root)
+        m_root_directory_relative_to_global_root = root_directory();
+    return *m_root_directory_relative_to_global_root;
 }
 
 void Process::set_root_directory(const Custody& root)
diff --git a/Kernel/Process.h b/Kernel/Process.h
index 5921e3070373..429b449952d5 100644
--- a/Kernel/Process.h
+++ b/Kernel/Process.h
@@ -339,7 +339,7 @@ class Process : public InlineLinkedListNode<Process>
     u32 priority_boost() const { return m_priority_boost; }
 
     Custody& root_directory();
-    Custody& root_directory_for_procfs();
+    Custody& root_directory_relative_to_global_root();
     void set_root_directory(const Custody&);
 
     bool has_promises() const { return m_promises; }
@@ -407,7 +407,7 @@ class Process : public InlineLinkedListNode<Process>
     RefPtr<Custody> m_executable;
     RefPtr<Custody> m_cwd;
     RefPtr<Custody> m_root_directory;
-    RefPtr<Custody> m_root_directory_for_procfs;
+    RefPtr<Custody> m_root_directory_relative_to_global_root;
 
     RefPtr<TTY> m_tty;"
dbda5a9a4ccfa3ab8e2e913800559f95dde48291,2021-06-26 23:36:55,Linus Groh,libjs: Move install_error_cause() from Object to Error,False,Move install_error_cause() from Object to Error,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/Error.cpp b/Userland/Libraries/LibJS/Runtime/Error.cpp
index c2fb594ce5c7..8eddcc68b850 100644
--- a/Userland/Libraries/LibJS/Runtime/Error.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Error.cpp
@@ -29,6 +29,21 @@ Error::Error(Object& prototype)
 {
 }
 
+// 20.5.8.1 InstallErrorCause ( O, options ), https://tc39.es/proposal-error-cause/#sec-errorobjects-install-error-cause
+void Error::install_error_cause(Value options)
+{
+    auto& vm = this->vm();
+    if (!options.is_object())
+        return;
+    auto& options_object = options.as_object();
+    if (!options_object.has_property(vm.names.cause))
+        return;
+    auto cause = options_object.get(vm.names.cause).value_or(js_undefined());
+    if (vm.exception())
+        return;
+    define_property(vm.names.cause, cause, Attribute::Writable | Attribute::Configurable);
+}
+
 #define __JS_ENUMERATE(ClassName, snake_name, PrototypeName, ConstructorName, ArrayType)                         \
     ClassName* ClassName::create(GlobalObject& global_object)                                                    \
     {                                                                                                            \
diff --git a/Userland/Libraries/LibJS/Runtime/Error.h b/Userland/Libraries/LibJS/Runtime/Error.h
index 774a376dd5a8..765ff8d27b5e 100644
--- a/Userland/Libraries/LibJS/Runtime/Error.h
+++ b/Userland/Libraries/LibJS/Runtime/Error.h
@@ -21,6 +21,8 @@ class Error : public Object {
 
     explicit Error(Object& prototype);
     virtual ~Error() override = default;
+
+    void install_error_cause(Value options);
 };
 
 // NOTE: Making these inherit from Error is not required by the spec but
diff --git a/Userland/Libraries/LibJS/Runtime/Object.cpp b/Userland/Libraries/LibJS/Runtime/Object.cpp
index b0dd99ba16e7..3571e23541eb 100644
--- a/Userland/Libraries/LibJS/Runtime/Object.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Object.cpp
@@ -1125,21 +1125,6 @@ Value Object::ordinary_to_primitive(Value::PreferredType preferred_type) const
     return {};
 }
 
-// 20.5.8.1 InstallErrorCause ( O, options ), https://tc39.es/proposal-error-cause/#sec-errorobjects-install-error-cause
-void Object::install_error_cause(Value options)
-{
-    auto& vm = this->vm();
-    if (!options.is_object())
-        return;
-    auto& options_object = options.as_object();
-    if (!options_object.has_property(vm.names.cause))
-        return;
-    auto cause = options_object.get(vm.names.cause).value_or(js_undefined());
-    if (vm.exception())
-        return;
-    define_property(vm.names.cause, cause, Attribute::Writable | Attribute::Configurable);
-}
-
 Value Object::invoke_internal(const StringOrSymbol& property_name, Optional<MarkedValueList> arguments)
 {
     auto& vm = this->vm();
diff --git a/Userland/Libraries/LibJS/Runtime/Object.h b/Userland/Libraries/LibJS/Runtime/Object.h
index 91f47be76ceb..bd8fb0575ed4 100644
--- a/Userland/Libraries/LibJS/Runtime/Object.h
+++ b/Userland/Libraries/LibJS/Runtime/Object.h
@@ -135,8 +135,6 @@ class Object : public Cell {
     IndexedProperties& indexed_properties() { return m_indexed_properties; }
     void set_indexed_property_elements(Vector<Value>&& values) { m_indexed_properties = IndexedProperties(move(values)); }
 
-    void install_error_cause(Value options);
-
     [[nodiscard]] Value invoke_internal(const StringOrSymbol& property_name, Optional<MarkedValueList> arguments);
 
     template<typename... Args>"
896db187e5f2651abba3be006f18e24d598542b1,2020-06-07 13:44:41,Andreas Kling,"libweb: Move Frame.{cpp,h} into a new Frame/ directory",False,"Move Frame.{cpp,h} into a new Frame/ directory",libweb,"diff --git a/Applications/Browser/Tab.cpp b/Applications/Browser/Tab.cpp
index 4028612c15c9..a5e40d6c103f 100644
--- a/Applications/Browser/Tab.cpp
+++ b/Applications/Browser/Tab.cpp
@@ -48,7 +48,7 @@
 #include <LibWeb/DOM/Element.h>
 #include <LibWeb/DOMTreeModel.h>
 #include <LibWeb/Dump.h>
-#include <LibWeb/Frame.h>
+#include <LibWeb/Frame/Frame.h>
 #include <LibWeb/PageView.h>
 #include <LibWeb/Layout/LayoutBlock.h>
 #include <LibWeb/Layout/LayoutDocument.h>
diff --git a/Libraries/LibWeb/CMakeLists.txt b/Libraries/LibWeb/CMakeLists.txt
index e39a350ef23e..b66a84ab52ac 100644
--- a/Libraries/LibWeb/CMakeLists.txt
+++ b/Libraries/LibWeb/CMakeLists.txt
@@ -64,7 +64,8 @@ set(SOURCES
     DOMTreeModel.cpp
     Dump.cpp
     FontCache.cpp
-    Frame.cpp
+    Frame/EventHandler.cpp
+    Frame/Frame.cpp
     Layout/BoxModelMetrics.cpp
     Layout/LayoutBlock.cpp
     Layout/LayoutBox.cpp
diff --git a/Libraries/LibWeb/CSS/StyleValue.cpp b/Libraries/LibWeb/CSS/StyleValue.cpp
index 33218278c01f..f088274ea121 100644
--- a/Libraries/LibWeb/CSS/StyleValue.cpp
+++ b/Libraries/LibWeb/CSS/StyleValue.cpp
@@ -30,7 +30,7 @@
 #include <LibGfx/Palette.h>
 #include <LibWeb/CSS/StyleValue.h>
 #include <LibWeb/DOM/Document.h>
-#include <LibWeb/Frame.h>
+#include <LibWeb/Frame/Frame.h>
 #include <LibWeb/Loader/LoadRequest.h>
 #include <LibWeb/Loader/ResourceLoader.h>
 #include <LibWeb/PageView.h>
diff --git a/Libraries/LibWeb/DOM/Document.cpp b/Libraries/LibWeb/DOM/Document.cpp
index 74e979c35094..1f130fddcd38 100644
--- a/Libraries/LibWeb/DOM/Document.cpp
+++ b/Libraries/LibWeb/DOM/Document.cpp
@@ -50,7 +50,7 @@
 #include <LibWeb/DOM/Text.h>
 #include <LibWeb/DOM/Window.h>
 #include <LibWeb/Dump.h>
-#include <LibWeb/Frame.h>
+#include <LibWeb/Frame/Frame.h>
 #include <LibWeb/Layout/LayoutDocument.h>
 #include <LibWeb/Layout/LayoutTreeBuilder.h>
 #include <LibWeb/Origin.h>
diff --git a/Libraries/LibWeb/DOM/HTMLFormElement.cpp b/Libraries/LibWeb/DOM/HTMLFormElement.cpp
index e4eef82a584d..d714fe813058 100644
--- a/Libraries/LibWeb/DOM/HTMLFormElement.cpp
+++ b/Libraries/LibWeb/DOM/HTMLFormElement.cpp
@@ -27,7 +27,7 @@
 #include <AK/StringBuilder.h>
 #include <LibWeb/DOM/HTMLFormElement.h>
 #include <LibWeb/DOM/HTMLInputElement.h>
-#include <LibWeb/Frame.h>
+#include <LibWeb/Frame/Frame.h>
 #include <LibWeb/PageView.h>
 #include <LibWeb/URLEncoder.h>
 
diff --git a/Libraries/LibWeb/DOM/HTMLIFrameElement.cpp b/Libraries/LibWeb/DOM/HTMLIFrameElement.cpp
index d35e0207e426..8f48779c5718 100644
--- a/Libraries/LibWeb/DOM/HTMLIFrameElement.cpp
+++ b/Libraries/LibWeb/DOM/HTMLIFrameElement.cpp
@@ -32,7 +32,7 @@
 #include <LibWeb/DOM/HTMLFormElement.h>
 #include <LibWeb/DOM/HTMLIFrameElement.h>
 #include <LibWeb/Dump.h>
-#include <LibWeb/Frame.h>
+#include <LibWeb/Frame/Frame.h>
 #include <LibWeb/Layout/LayoutFrame.h>
 #include <LibWeb/Layout/LayoutWidget.h>
 #include <LibWeb/Loader/ResourceLoader.h>
diff --git a/Libraries/LibWeb/DOM/HTMLInputElement.cpp b/Libraries/LibWeb/DOM/HTMLInputElement.cpp
index 219af95e19e0..e34f9cb75280 100644
--- a/Libraries/LibWeb/DOM/HTMLInputElement.cpp
+++ b/Libraries/LibWeb/DOM/HTMLInputElement.cpp
@@ -31,7 +31,7 @@
 #include <LibWeb/DOM/Event.h>
 #include <LibWeb/DOM/HTMLFormElement.h>
 #include <LibWeb/DOM/HTMLInputElement.h>
-#include <LibWeb/Frame.h>
+#include <LibWeb/Frame/Frame.h>
 #include <LibWeb/Layout/LayoutWidget.h>
 #include <LibWeb/PageView.h>
 
diff --git a/Libraries/LibWeb/DOM/Window.cpp b/Libraries/LibWeb/DOM/Window.cpp
index 55dce4c5e3f6..10a70c530566 100644
--- a/Libraries/LibWeb/DOM/Window.cpp
+++ b/Libraries/LibWeb/DOM/Window.cpp
@@ -32,7 +32,7 @@
 #include <LibJS/Runtime/MarkedValueList.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/DOM/Window.h>
-#include <LibWeb/Frame.h>
+#include <LibWeb/Frame/Frame.h>
 #include <LibWeb/PageView.h>
 
 namespace Web {
diff --git a/Libraries/LibWeb/Frame.cpp b/Libraries/LibWeb/Frame/Frame.cpp
similarity index 99%
rename from Libraries/LibWeb/Frame.cpp
rename to Libraries/LibWeb/Frame/Frame.cpp
index 8985e2ede0bc..221edad879db 100644
--- a/Libraries/LibWeb/Frame.cpp
+++ b/Libraries/LibWeb/Frame/Frame.cpp
@@ -25,7 +25,7 @@
  */
 
 #include <LibWeb/DOM/Document.h>
-#include <LibWeb/Frame.h>
+#include <LibWeb/Frame/Frame.h>
 #include <LibWeb/Layout/LayoutDocument.h>
 #include <LibWeb/Layout/LayoutWidget.h>
 #include <LibWeb/PageView.h>
diff --git a/Libraries/LibWeb/Frame.h b/Libraries/LibWeb/Frame/Frame.h
similarity index 97%
rename from Libraries/LibWeb/Frame.h
rename to Libraries/LibWeb/Frame/Frame.h
index cc98cbb62909..3a84cdfd6ac8 100644
--- a/Libraries/LibWeb/Frame.h
+++ b/Libraries/LibWeb/Frame/Frame.h
@@ -55,7 +55,7 @@ class Frame : public TreeNode<Frame> {
     void set_document(Document*);
 
     PageView* page_view() { return is_main_frame() ? m_page_view : main_frame().m_page_view; }
-    const PageView* page_view() const{ return is_main_frame() ? m_page_view : main_frame().m_page_view; }
+    const PageView* page_view() const { return is_main_frame() ? m_page_view : main_frame().m_page_view; }
 
     const Gfx::Size& size() const { return m_size; }
     void set_size(const Gfx::Size&);
diff --git a/Libraries/LibWeb/Layout/LayoutBox.cpp b/Libraries/LibWeb/Layout/LayoutBox.cpp
index 1095a94ff949..27add6241fec 100644
--- a/Libraries/LibWeb/Layout/LayoutBox.cpp
+++ b/Libraries/LibWeb/Layout/LayoutBox.cpp
@@ -27,7 +27,7 @@
 #include <LibGUI/Painter.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/DOM/HTMLBodyElement.h>
-#include <LibWeb/Frame.h>
+#include <LibWeb/Frame/Frame.h>
 #include <LibWeb/Layout/LayoutBlock.h>
 #include <LibWeb/Layout/LayoutBox.h>
 
diff --git a/Libraries/LibWeb/Layout/LayoutDocument.cpp b/Libraries/LibWeb/Layout/LayoutDocument.cpp
index 6a14af9b0b1b..bf6d8c33ec3c 100644
--- a/Libraries/LibWeb/Layout/LayoutDocument.cpp
+++ b/Libraries/LibWeb/Layout/LayoutDocument.cpp
@@ -25,7 +25,7 @@
  */
 
 #include <LibWeb/Dump.h>
-#include <LibWeb/Frame.h>
+#include <LibWeb/Frame/Frame.h>
 #include <LibWeb/Layout/LayoutDocument.h>
 #include <LibWeb/Layout/LayoutImage.h>
 
diff --git a/Libraries/LibWeb/Layout/LayoutFrame.cpp b/Libraries/LibWeb/Layout/LayoutFrame.cpp
index 3a39c42dcb20..e71ecee7d258 100644
--- a/Libraries/LibWeb/Layout/LayoutFrame.cpp
+++ b/Libraries/LibWeb/Layout/LayoutFrame.cpp
@@ -30,7 +30,7 @@
 #include <LibGfx/Font.h>
 #include <LibGfx/StylePainter.h>
 #include <LibWeb/DOM/Document.h>
-#include <LibWeb/Frame.h>
+#include <LibWeb/Frame/Frame.h>
 #include <LibWeb/Layout/LayoutDocument.h>
 #include <LibWeb/Layout/LayoutFrame.h>
 #include <LibWeb/PageView.h>
diff --git a/Libraries/LibWeb/Layout/LayoutNode.cpp b/Libraries/LibWeb/Layout/LayoutNode.cpp
index e838162a4bb0..a9039492fd4a 100644
--- a/Libraries/LibWeb/Layout/LayoutNode.cpp
+++ b/Libraries/LibWeb/Layout/LayoutNode.cpp
@@ -27,7 +27,7 @@
 #include <LibGUI/Painter.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/DOM/Element.h>
-#include <LibWeb/Frame.h>
+#include <LibWeb/Frame/Frame.h>
 #include <LibWeb/Layout/LayoutBlock.h>
 #include <LibWeb/Layout/LayoutDocument.h>
 #include <LibWeb/Layout/LayoutNode.h>
diff --git a/Libraries/LibWeb/Layout/LayoutWidget.cpp b/Libraries/LibWeb/Layout/LayoutWidget.cpp
index 0c64e5ba7cc7..e8f68bf4b289 100644
--- a/Libraries/LibWeb/Layout/LayoutWidget.cpp
+++ b/Libraries/LibWeb/Layout/LayoutWidget.cpp
@@ -30,7 +30,7 @@
 #include <LibGfx/Font.h>
 #include <LibGfx/StylePainter.h>
 #include <LibWeb/DOM/Document.h>
-#include <LibWeb/Frame.h>
+#include <LibWeb/Frame/Frame.h>
 #include <LibWeb/Layout/LayoutWidget.h>
 #include <LibWeb/PageView.h>
 
diff --git a/Libraries/LibWeb/Loader/FrameLoader.cpp b/Libraries/LibWeb/Loader/FrameLoader.cpp
index afd595bfaf5f..e0cbcd8f6651 100644
--- a/Libraries/LibWeb/Loader/FrameLoader.cpp
+++ b/Libraries/LibWeb/Loader/FrameLoader.cpp
@@ -30,7 +30,7 @@
 #include <LibMarkdown/Document.h>
 #include <LibWeb/DOM/ElementFactory.h>
 #include <LibWeb/DOM/Text.h>
-#include <LibWeb/Frame.h>
+#include <LibWeb/Frame/Frame.h>
 #include <LibWeb/Loader/FrameLoader.h>
 #include <LibWeb/Loader/ResourceLoader.h>
 #include <LibWeb/Parser/HTMLDocumentParser.h>
diff --git a/Libraries/LibWeb/PageView.cpp b/Libraries/LibWeb/PageView.cpp
index 2bf457bb8846..2271b9f2909c 100644
--- a/Libraries/LibWeb/PageView.cpp
+++ b/Libraries/LibWeb/PageView.cpp
@@ -41,7 +41,7 @@
 #include <LibWeb/DOM/MouseEvent.h>
 #include <LibWeb/DOM/Text.h>
 #include <LibWeb/Dump.h>
-#include <LibWeb/Frame.h>
+#include <LibWeb/Frame/Frame.h>
 #include <LibWeb/Layout/LayoutDocument.h>
 #include <LibWeb/Layout/LayoutNode.h>
 #include <LibWeb/Loader/ResourceLoader.h>"
34261e54901f015fbc5763f6d3ac724006291cfa,2024-10-11 20:56:54,Aliaksandr Kalenik,libweb: Don't produce save & restore commands for scroll frame id change,False,Don't produce save & restore commands for scroll frame id change,libweb,"diff --git a/Userland/Libraries/LibWeb/Painting/ClippableAndScrollable.cpp b/Userland/Libraries/LibWeb/Painting/ClippableAndScrollable.cpp
index d79dc893f484..a3d41153747a 100644
--- a/Userland/Libraries/LibWeb/Painting/ClippableAndScrollable.cpp
+++ b/Userland/Libraries/LibWeb/Painting/ClippableAndScrollable.cpp
@@ -47,12 +47,11 @@ void ClippableAndScrollable::apply_clip(PaintContext& context) const
 
     auto& display_list_recorder = context.display_list_recorder();
     display_list_recorder.save();
-    auto saved_scroll_frame_id = display_list_recorder.scroll_frame_id();
     for (auto const& clip_rect : clip_rects) {
         Optional<i32> clip_scroll_frame_id;
         if (clip_rect.enclosing_scroll_frame)
             clip_scroll_frame_id = clip_rect.enclosing_scroll_frame->id();
-        display_list_recorder.set_scroll_frame_id(clip_scroll_frame_id);
+        display_list_recorder.push_scroll_frame_id(clip_scroll_frame_id);
         auto rect = context.rounded_device_rect(clip_rect.rect).to_type<int>();
         auto corner_radii = clip_rect.corner_radii.as_corners(context);
         if (corner_radii.has_any_radius()) {
@@ -60,8 +59,8 @@ void ClippableAndScrollable::apply_clip(PaintContext& context) const
         } else {
             display_list_recorder.add_clip_rect(rect);
         }
+        display_list_recorder.pop_scroll_frame_id();
     }
-    display_list_recorder.set_scroll_frame_id(saved_scroll_frame_id);
 }
 
 void ClippableAndScrollable::restore_clip(PaintContext& context) const
diff --git a/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.cpp b/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.cpp
index 39ae395560d4..38fe974714b7 100644
--- a/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.cpp
+++ b/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.cpp
@@ -12,14 +12,16 @@ namespace Web::Painting {
 DisplayListRecorder::DisplayListRecorder(DisplayList& command_list)
     : m_command_list(command_list)
 {
-    m_state_stack.append(State());
 }
 
 DisplayListRecorder::~DisplayListRecorder() = default;
 
 void DisplayListRecorder::append(Command&& command)
 {
-    m_command_list.append(move(command), state().scroll_frame_id);
+    Optional<i32> scroll_frame_id;
+    if (!m_scroll_frame_id_stack.is_empty())
+        scroll_frame_id = m_scroll_frame_id_stack.last();
+    m_command_list.append(move(command), scroll_frame_id);
 }
 
 void DisplayListRecorder::paint_nested_display_list(RefPtr<DisplayList> display_list, Gfx::IntRect rect)
@@ -261,15 +263,21 @@ void DisplayListRecorder::translate(Gfx::IntPoint delta)
 void DisplayListRecorder::save()
 {
     append(Save {});
-    m_state_stack.append(m_state_stack.last());
 }
 
 void DisplayListRecorder::restore()
 {
     append(Restore {});
+}
 
-    VERIFY(m_state_stack.size() > 1);
-    m_state_stack.take_last();
+void DisplayListRecorder::push_scroll_frame_id(Optional<i32> id)
+{
+    m_scroll_frame_id_stack.append(id);
+}
+
+void DisplayListRecorder::pop_scroll_frame_id()
+{
+    (void)m_scroll_frame_id_stack.take_last();
 }
 
 void DisplayListRecorder::push_stacking_context(PushStackingContextParams params)
@@ -282,12 +290,12 @@ void DisplayListRecorder::push_stacking_context(PushStackingContextParams params
             .matrix = params.transform.matrix,
         },
         .clip_path = params.clip_path });
-    m_state_stack.append(State());
+    m_scroll_frame_id_stack.append({});
 }
 
 void DisplayListRecorder::pop_stacking_context()
 {
-    m_state_stack.take_last();
+    (void)m_scroll_frame_id_stack.take_last();
     append(PopStackingContext {});
 }
 
diff --git a/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.h b/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.h
index 37738e4a88cf..db151c2a9592 100644
--- a/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.h
+++ b/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.h
@@ -103,15 +103,8 @@ class DisplayListRecorder {
 
     void translate(Gfx::IntPoint delta);
 
-    void set_scroll_frame_id(Optional<i32> id)
-    {
-        state().scroll_frame_id = id;
-    }
-
-    Optional<i32> scroll_frame_id() const
-    {
-        return state().scroll_frame_id;
-    }
+    void push_scroll_frame_id(Optional<i32> id);
+    void pop_scroll_frame_id();
 
     void save();
     void restore();
@@ -157,13 +150,7 @@ class DisplayListRecorder {
     void append(Command&& command);
 
 private:
-    struct State {
-        Optional<i32> scroll_frame_id;
-    };
-    State& state() { return m_state_stack.last(); }
-    State const& state() const { return m_state_stack.last(); }
-
-    Vector<State> m_state_stack;
+    Vector<Optional<i32>> m_scroll_frame_id_stack;
     DisplayList& m_command_list;
 };
 
diff --git a/Userland/Libraries/LibWeb/Painting/InlinePaintable.cpp b/Userland/Libraries/LibWeb/Painting/InlinePaintable.cpp
index c54b484485ee..21769a4029db 100644
--- a/Userland/Libraries/LibWeb/Painting/InlinePaintable.cpp
+++ b/Userland/Libraries/LibWeb/Painting/InlinePaintable.cpp
@@ -37,15 +37,15 @@ void InlinePaintable::before_paint(PaintContext& context, PaintPhase) const
     apply_clip(context);
 
     if (scroll_frame_id().has_value()) {
-        context.display_list_recorder().save();
-        context.display_list_recorder().set_scroll_frame_id(scroll_frame_id().value());
+        context.display_list_recorder().push_scroll_frame_id(scroll_frame_id().value());
     }
 }
 
 void InlinePaintable::after_paint(PaintContext& context, PaintPhase) const
 {
-    if (scroll_frame_id().has_value())
-        context.display_list_recorder().restore();
+    if (scroll_frame_id().has_value()) {
+        context.display_list_recorder().pop_scroll_frame_id();
+    }
 
     restore_clip(context);
 }
diff --git a/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp b/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
index 79801815c2a2..1cab96f22478 100644
--- a/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
+++ b/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
@@ -477,15 +477,15 @@ BorderRadiiData PaintableBox::normalized_border_radii_data(ShrinkRadiiForBorders
 void PaintableBox::apply_scroll_offset(PaintContext& context, PaintPhase) const
 {
     if (scroll_frame_id().has_value()) {
-        context.display_list_recorder().save();
-        context.display_list_recorder().set_scroll_frame_id(scroll_frame_id().value());
+        context.display_list_recorder().push_scroll_frame_id(scroll_frame_id().value());
     }
 }
 
 void PaintableBox::reset_scroll_offset(PaintContext& context, PaintPhase) const
 {
-    if (scroll_frame_id().has_value())
-        context.display_list_recorder().restore();
+    if (scroll_frame_id().has_value()) {
+        context.display_list_recorder().pop_scroll_frame_id();
+    }
 }
 
 void PaintableBox::apply_clip_overflow_rect(PaintContext& context, PaintPhase phase) const
@@ -687,7 +687,7 @@ void PaintableWithLines::paint(PaintContext& context, PaintPhase phase) const
         }
 
         if (own_scroll_frame_id().has_value()) {
-            context.display_list_recorder().set_scroll_frame_id(own_scroll_frame_id().value());
+            context.display_list_recorder().push_scroll_frame_id(own_scroll_frame_id().value());
         }
     }
 
@@ -716,6 +716,10 @@ void PaintableWithLines::paint(PaintContext& context, PaintPhase phase) const
 
     if (should_clip_overflow) {
         context.display_list_recorder().restore();
+
+        if (own_scroll_frame_id().has_value()) {
+            context.display_list_recorder().pop_scroll_frame_id();
+        }
     }
 }
 
diff --git a/Userland/Libraries/LibWeb/Painting/SVGSVGPaintable.cpp b/Userland/Libraries/LibWeb/Painting/SVGSVGPaintable.cpp
index 3fb691d81e42..fa1bd5968477 100644
--- a/Userland/Libraries/LibWeb/Painting/SVGSVGPaintable.cpp
+++ b/Userland/Libraries/LibWeb/Painting/SVGSVGPaintable.cpp
@@ -31,8 +31,7 @@ void SVGSVGPaintable::before_children_paint(PaintContext& context, PaintPhase ph
     PaintableBox::before_children_paint(context, phase);
     if (phase != PaintPhase::Foreground)
         return;
-    context.display_list_recorder().save();
-    context.display_list_recorder().set_scroll_frame_id(scroll_frame_id());
+    context.display_list_recorder().push_scroll_frame_id(scroll_frame_id());
 }
 
 void SVGSVGPaintable::after_children_paint(PaintContext& context, PaintPhase phase) const
@@ -40,7 +39,7 @@ void SVGSVGPaintable::after_children_paint(PaintContext& context, PaintPhase pha
     PaintableBox::after_children_paint(context, phase);
     if (phase != PaintPhase::Foreground)
         return;
-    context.display_list_recorder().restore();
+    context.display_list_recorder().pop_scroll_frame_id();
 }
 
 static Gfx::FloatMatrix4x4 matrix_with_scaled_translation(Gfx::FloatMatrix4x4 matrix, float scale)
diff --git a/Userland/Libraries/LibWeb/Painting/StackingContext.cpp b/Userland/Libraries/LibWeb/Painting/StackingContext.cpp
index b8f43c67e658..8f9aa97888b2 100644
--- a/Userland/Libraries/LibWeb/Painting/StackingContext.cpp
+++ b/Userland/Libraries/LibWeb/Painting/StackingContext.cpp
@@ -335,8 +335,9 @@ void StackingContext::paint(PaintContext& context) const
     if (has_css_transform) {
         paintable_box().apply_clip_overflow_rect(context, PaintPhase::Foreground);
     }
-    if (paintable().is_paintable_box() && paintable_box().scroll_frame_id().has_value())
-        context.display_list_recorder().set_scroll_frame_id(*paintable_box().scroll_frame_id());
+    if (paintable().is_paintable_box() && paintable_box().scroll_frame_id().has_value()) {
+        context.display_list_recorder().push_scroll_frame_id(*paintable_box().scroll_frame_id());
+    }
     context.display_list_recorder().push_stacking_context(push_stacking_context_params);
 
     if (paintable().is_paintable_box()) {
@@ -353,6 +354,9 @@ void StackingContext::paint(PaintContext& context) const
 
     paint_internal(context);
     context.display_list_recorder().pop_stacking_context();
+    if (paintable().is_paintable_box() && paintable_box().scroll_frame_id().has_value()) {
+        context.display_list_recorder().pop_scroll_frame_id();
+    }
     if (has_css_transform)
         paintable_box().clear_clip_overflow_rect(context, PaintPhase::Foreground);
     context.display_list_recorder().restore();"
758d816b23e86cbe9f24471988e73f3c15f8c080,2021-08-05 23:47:08,K-Adam,libweb: Clear SVG context after SVGSVGBox children are painted,False,Clear SVG context after SVGSVGBox children are painted,libweb,"diff --git a/Userland/Libraries/LibWeb/Layout/SVGSVGBox.cpp b/Userland/Libraries/LibWeb/Layout/SVGSVGBox.cpp
index bbbd9a613785..f53bbbbebe10 100644
--- a/Userland/Libraries/LibWeb/Layout/SVGSVGBox.cpp
+++ b/Userland/Libraries/LibWeb/Layout/SVGSVGBox.cpp
@@ -37,6 +37,7 @@ void SVGSVGBox::after_children_paint(PaintContext& context, PaintPhase phase)
     SVGGraphicsBox::after_children_paint(context, phase);
     if (phase != PaintPhase::Foreground)
         return;
+    context.clear_svg_context();
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/Painting/PaintContext.h b/Userland/Libraries/LibWeb/Painting/PaintContext.h
index 6ae814994d62..682601c1587e 100644
--- a/Userland/Libraries/LibWeb/Painting/PaintContext.h
+++ b/Userland/Libraries/LibWeb/Painting/PaintContext.h
@@ -29,6 +29,7 @@ class PaintContext {
     bool has_svg_context() const { return m_svg_context.has_value(); }
     SVGContext& svg_context() { return m_svg_context.value(); }
     void set_svg_context(SVGContext context) { m_svg_context = context; }
+    void clear_svg_context() { m_svg_context.clear(); }
 
     bool should_show_line_box_borders() const { return m_should_show_line_box_borders; }
     void set_should_show_line_box_borders(bool value) { m_should_show_line_box_borders = value; }"
23f3857cdd404275044be599666081e1a8a7a287,2022-07-21 20:09:22,Idan Horowitz,systemserver: Create /tmp/semaphore on startup,False,Create /tmp/semaphore on startup,systemserver,"diff --git a/Userland/Services/SystemServer/main.cpp b/Userland/Services/SystemServer/main.cpp
index c2ae144d7683..8f78d72691ad 100644
--- a/Userland/Services/SystemServer/main.cpp
+++ b/Userland/Services/SystemServer/main.cpp
@@ -465,6 +465,15 @@ static ErrorOr<void> create_tmp_coredump_directory()
     return {};
 }
 
+static ErrorOr<void> create_tmp_semaphore_directory()
+{
+    dbgln(""Creating /tmp/semaphore directory"");
+    auto old_umask = umask(0);
+    TRY(Core::System::mkdir(""/tmp/semaphore""sv, 0777));
+    umask(old_umask);
+    return {};
+}
+
 ErrorOr<int> serenity_main(Main::Arguments arguments)
 {
     bool user = false;
@@ -481,6 +490,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
 
     if (!user) {
         TRY(create_tmp_coredump_directory());
+        TRY(create_tmp_semaphore_directory());
         TRY(determine_system_mode());
     }"
91cbdc67de2564b29cdaf99f379f24874401c396,2023-01-18 17:16:12,Timothy Flynn,libcore: Default-initialize the FileWatcher event mask,False,Default-initialize the FileWatcher event mask,libcore,"diff --git a/Userland/Libraries/LibCore/FileWatcher.h b/Userland/Libraries/LibCore/FileWatcher.h
index 2a0ece2df8dc..1fef985abac9 100644
--- a/Userland/Libraries/LibCore/FileWatcher.h
+++ b/Userland/Libraries/LibCore/FileWatcher.h
@@ -28,7 +28,7 @@ struct FileWatcherEvent {
         ChildCreated = 1 << 3,
         ChildDeleted = 1 << 4,
     };
-    Type type;
+    Type type { Type::Invalid };
     DeprecatedString event_path;
 };"
e036f4a78616a1eb72d2d372eda78724fb917fa3,2021-08-05 22:49:40,Linus Groh,libjs: Make regulate_iso_date() and iso_date_from_fields() use ISODate,False,Make regulate_iso_date() and iso_date_from_fields() use ISODate,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp
index 934a38415c09..100cc75c47b1 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp
@@ -659,7 +659,7 @@ double resolve_iso_month(GlobalObject& global_object, Object& fields)
 }
 
 // 12.1.38 ISODateFromFields ( fields, options ), https://tc39.es/proposal-temporal/#sec-temporal-isodatefromfields
-Optional<TemporalDate> iso_date_from_fields(GlobalObject& global_object, Object& fields, Object& options)
+Optional<ISODate> iso_date_from_fields(GlobalObject& global_object, Object& fields, Object& options)
 {
     auto& vm = global_object.vm();
 
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.h b/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.h
index 94fea7120a8d..fe2c9bd13c86 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.h
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.h
@@ -8,7 +8,7 @@
 #pragma once
 
 #include <LibJS/Runtime/Object.h>
-#include <LibJS/Runtime/Temporal/AbstractOperations.h>
+#include <LibJS/Runtime/Temporal/PlainDate.h>
 #include <LibJS/Runtime/Value.h>
 
 namespace JS::Temporal {
@@ -58,7 +58,7 @@ u16 to_iso_day_of_year(i32 year, u8 month, u8 day);
 u8 to_iso_week_of_year(i32 year, u8 month, u8 day);
 String build_iso_month_code(u8 month);
 double resolve_iso_month(GlobalObject&, Object& fields);
-Optional<TemporalDate> iso_date_from_fields(GlobalObject&, Object& fields, Object& options);
+Optional<ISODate> iso_date_from_fields(GlobalObject&, Object& fields, Object& options);
 i32 iso_year(Object& temporal_object);
 u8 iso_month(Object& temporal_object);
 String iso_month_code(Object& temporal_object);
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDate.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDate.cpp
index d5113409ffea..3ddfde0fa448 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDate.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDate.cpp
@@ -161,7 +161,7 @@ PlainDate* to_temporal_date(GlobalObject& global_object, Value item, Object* opt
 }
 
 // 3.5.4 RegulateISODate ( year, month, day, overflow ), https://tc39.es/proposal-temporal/#sec-temporal-regulateisodate
-Optional<TemporalDate> regulate_iso_date(GlobalObject& global_object, double year, double month, double day, String const& overflow)
+Optional<ISODate> regulate_iso_date(GlobalObject& global_object, double year, double month, double day, String const& overflow)
 {
     auto& vm = global_object.vm();
     // 1. Assert: year, month, and day are integers.
@@ -187,7 +187,7 @@ Optional<TemporalDate> regulate_iso_date(GlobalObject& global_object, double yea
             return {};
         }
         // b. Return the Record { [[Year]]: year, [[Month]]: month, [[Day]]: day }.
-        return TemporalDate { .year = y, .month = m, .day = d, .calendar = {} };
+        return ISODate { .year = y, .month = m, .day = d };
     }
     // 4. If overflow is ""constrain"", then
     else if (overflow == ""constrain""sv) {
@@ -206,7 +206,7 @@ Optional<TemporalDate> regulate_iso_date(GlobalObject& global_object, double yea
         day = constrain_to_range(day, 1, iso_days_in_month(y, month));
 
         // c. Return the Record { [[Year]]: year, [[Month]]: month, [[Day]]: day }.
-        return TemporalDate { .year = y, .month = static_cast<u8>(month), .day = static_cast<u8>(day), .calendar = {} };
+        return ISODate { .year = y, .month = static_cast<u8>(month), .day = static_cast<u8>(day) };
     }
     VERIFY_NOT_REACHED();
 }
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDate.h b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDate.h
index 6cab0c015dbf..b0985fe52dfd 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDate.h
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDate.h
@@ -7,7 +7,6 @@
 
 #pragma once
 
-#include <LibJS/Runtime/Temporal/AbstractOperations.h>
 #include <LibJS/Runtime/Value.h>
 
 namespace JS::Temporal {
@@ -43,7 +42,7 @@ struct ISODate {
 
 PlainDate* create_temporal_date(GlobalObject&, i32 iso_year, u8 iso_month, u8 iso_day, Object& calendar, FunctionObject* new_target = nullptr);
 PlainDate* to_temporal_date(GlobalObject&, Value item, Object* options = nullptr);
-Optional<TemporalDate> regulate_iso_date(GlobalObject&, double year, double month, double day, String const& overflow);
+Optional<ISODate> regulate_iso_date(GlobalObject&, double year, double month, double day, String const& overflow);
 bool is_valid_iso_date(i32 year, u8 month, u8 day);
 ISODate balance_iso_date(i32 year, i32 month, i32 day);
 i8 compare_iso_date(i32 year1, u8 month1, u8 day1, i32 year2, u8 month2, u8 day2);
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateConstructor.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateConstructor.cpp
index 745f47e442ed..974bd0447241 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateConstructor.cpp
@@ -7,6 +7,7 @@
 #include <AK/Checked.h>
 #include <AK/TypeCasts.h>
 #include <LibJS/Runtime/GlobalObject.h>
+#include <LibJS/Runtime/Temporal/AbstractOperations.h>
 #include <LibJS/Runtime/Temporal/Calendar.h>
 #include <LibJS/Runtime/Temporal/PlainDate.h>
 #include <LibJS/Runtime/Temporal/PlainDateConstructor.h>"
8ba18dfd404543290774f21ee3ed6c802e3371cd,2024-02-20 15:25:10,Aliaksandr Kalenik,libweb: Schedule repainting from EventLoop::process(),False,Schedule repainting from EventLoop::process(),libweb,"diff --git a/Userland/Libraries/LibWeb/HTML/EventLoop/EventLoop.cpp b/Userland/Libraries/LibWeb/HTML/EventLoop/EventLoop.cpp
index dcb5ff2736f0..923be22bca1f 100644
--- a/Userland/Libraries/LibWeb/HTML/EventLoop/EventLoop.cpp
+++ b/Userland/Libraries/LibWeb/HTML/EventLoop/EventLoop.cpp
@@ -15,6 +15,7 @@
 #include <LibWeb/HTML/Window.h>
 #include <LibWeb/HighResolutionTime/Performance.h>
 #include <LibWeb/HighResolutionTime/TimeOrigin.h>
+#include <LibWeb/Page/Page.h>
 #include <LibWeb/Platform/EventLoopPlugin.h>
 #include <LibWeb/Platform/Timer.h>
 
@@ -213,7 +214,12 @@ void EventLoop::process()
 
     // FIXME:     15. Invoke the mark paint timing algorithm for each Document object in docs.
 
-    // FIXME:     16. For each fully active Document in docs, update the rendering or user interface of that Document and its browsing context to reflect the current state.
+    // 16. For each fully active Document in docs, update the rendering or user interface of that Document and its browsing context to reflect the current state.
+    for_each_fully_active_document_in_docs([&](DOM::Document& document) {
+        auto* browsing_context = document.browsing_context();
+        auto& page = browsing_context->page();
+        page.client().schedule_repaint();
+    });
 
     // 13. If all of the following are true
     // - this is a window event loop
diff --git a/Userland/Libraries/LibWeb/Page/Page.h b/Userland/Libraries/LibWeb/Page/Page.h
index c2f402df5e7b..9e05a7d7ef47 100644
--- a/Userland/Libraries/LibWeb/Page/Page.h
+++ b/Userland/Libraries/LibWeb/Page/Page.h
@@ -302,6 +302,8 @@ class PageClient : public JS::Cell {
     virtual void inspector_did_request_dom_tree_context_menu([[maybe_unused]] i32 node_id, [[maybe_unused]] CSSPixelPoint position, [[maybe_unused]] String const& type, [[maybe_unused]] Optional<String> const& tag, [[maybe_unused]] Optional<String> const& attribute_name, [[maybe_unused]] Optional<String> const& attribute_value) { }
     virtual void inspector_did_execute_console_script([[maybe_unused]] String const& script) { }
 
+    virtual void schedule_repaint() = 0;
+
 protected:
     virtual ~PageClient() = default;
 };
diff --git a/Userland/Libraries/LibWeb/SVG/SVGDecodedImageData.cpp b/Userland/Libraries/LibWeb/SVG/SVGDecodedImageData.cpp
index 9c32a874a529..ada4cb118394 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGDecodedImageData.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGDecodedImageData.cpp
@@ -48,6 +48,7 @@ class SVGDecodedImageData::SVGPageClient final : public PageClient {
     virtual CSS::PreferredColorScheme preferred_color_scheme() const override { return m_host_page.client().preferred_color_scheme(); }
     virtual void request_file(FileRequest) override { }
     virtual void paint(DevicePixelRect const&, Gfx::Bitmap&, Web::PaintOptions = {}) override { }
+    virtual void schedule_repaint() override { }
 
 private:
     explicit SVGPageClient(Page& host_page)
diff --git a/Userland/Services/WebContent/PageClient.cpp b/Userland/Services/WebContent/PageClient.cpp
index 56d2ed76debd..52f0f882b6ee 100644
--- a/Userland/Services/WebContent/PageClient.cpp
+++ b/Userland/Services/WebContent/PageClient.cpp
@@ -222,12 +222,12 @@ void PageClient::paint(Web::DevicePixelRect const& content_rect, Gfx::Bitmap& ta
 void PageClient::set_viewport_rect(Web::DevicePixelRect const& rect)
 {
     page().top_level_traversable()->set_viewport_rect(page().device_to_css_rect(rect));
-    schedule_repaint();
+    Web::HTML::main_thread_event_loop().schedule();
 }
 
 void PageClient::page_did_invalidate(Web::CSSPixelRect const&)
 {
-    schedule_repaint();
+    Web::HTML::main_thread_event_loop().schedule();
 }
 
 void PageClient::page_did_request_cursor_change(Gfx::StandardCursor cursor)
diff --git a/Userland/Services/WebContent/PageClient.h b/Userland/Services/WebContent/PageClient.h
index 318647f4cde1..11af94568f60 100644
--- a/Userland/Services/WebContent/PageClient.h
+++ b/Userland/Services/WebContent/PageClient.h
@@ -28,7 +28,7 @@ class PageClient final : public Web::PageClient {
 
     static void set_use_gpu_painter();
 
-    void schedule_repaint();
+    virtual void schedule_repaint() override;
 
     virtual Web::Page& page() override { return *m_page; }
     virtual Web::Page const& page() const override { return *m_page; }
diff --git a/Userland/Services/WebWorker/PageHost.h b/Userland/Services/WebWorker/PageHost.h
index 55e41a8e1da4..61a2b8ef8379 100644
--- a/Userland/Services/WebWorker/PageHost.h
+++ b/Userland/Services/WebWorker/PageHost.h
@@ -30,6 +30,7 @@ class PageHost final : public Web::PageClient {
     virtual Web::CSS::PreferredColorScheme preferred_color_scheme() const override;
     virtual void paint(Web::DevicePixelRect const&, Gfx::Bitmap&, Web::PaintOptions = {}) override;
     virtual void request_file(Web::FileRequest) override;
+    virtual void schedule_repaint() override {};
 
 private:
     explicit PageHost(ConnectionFromClient&);"
95d00553c97911a438c0e7113cc0cce65bd5385c,2023-08-05 23:33:09,Hendiadyoin1,libweb: Use default comparator for PixelUnits,False,Use default comparator for PixelUnits,libweb,"diff --git a/Userland/Libraries/LibWeb/PixelUnits.cpp b/Userland/Libraries/LibWeb/PixelUnits.cpp
index b373d9935ebe..fc13a0c39ad6 100644
--- a/Userland/Libraries/LibWeb/PixelUnits.cpp
+++ b/Userland/Libraries/LibWeb/PixelUnits.cpp
@@ -56,10 +56,7 @@ bool CSSPixels::might_be_saturated() const
     return raw_value() == NumericLimits<i32>::max() || raw_value() == NumericLimits<i32>::min();
 }
 
-bool CSSPixels::operator==(CSSPixels const& other) const
-{
-    return raw_value() == other.raw_value();
-}
+bool CSSPixels::operator==(CSSPixels const& other) const = default;
 
 CSSPixels& CSSPixels::operator++()
 {"
1e6afa9fd51885a0f42d3d986c4ed109b9f3b504,2021-10-30 01:36:49,Timothy Flynn,base: Add tests for data: URLs and large list-style-image to lists.html,False,Add tests for data: URLs and large list-style-image to lists.html,base,"diff --git a/Base/res/html/misc/lists.html b/Base/res/html/misc/lists.html
index 643ca41ed705..45cd33d3822f 100644
--- a/Base/res/html/misc/lists.html
+++ b/Base/res/html/misc/lists.html
@@ -44,6 +44,18 @@ <h2>ul</h2>
         <li>Another entry</li>
     </ul>
 
+    <p>list-style: outside url(90s-bg.png)</p>
+    <ul style=""list-style-image: url(90s-bg.png);"">
+        <li>Entry one</li>
+        <li>Another entry</li>
+    </ul>
+
+    <p>list-style: outside url(data:image/png)</p>
+    <ul style=""list-style-image: url(data:image/png;base64,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);"">
+        <li>Entry one</li>
+        <li>Another entry</li>
+    </ul>
+
     <h2>ol</h2>
     <p>default</p>
     <ol>"
72e959d753bb7bdf4ba6f7bff9aea3459391de60,2023-07-27 11:32:44,Aliaksandr Kalenik,libweb: Fix calculation of bitmap size in BorderRadiusCornerClipper,False,Fix calculation of bitmap size in BorderRadiusCornerClipper,libweb,"diff --git a/Userland/Libraries/LibWeb/Painting/BorderRadiusCornerClipper.cpp b/Userland/Libraries/LibWeb/Painting/BorderRadiusCornerClipper.cpp
index 9027129b5cd0..5ce47713a894 100644
--- a/Userland/Libraries/LibWeb/Painting/BorderRadiusCornerClipper.cpp
+++ b/Userland/Libraries/LibWeb/Painting/BorderRadiusCornerClipper.cpp
@@ -21,11 +21,19 @@ ErrorOr<BorderRadiusCornerClipper> BorderRadiusCornerClipper::create(PaintContex
 
     DevicePixelSize corners_bitmap_size {
         max(
-            top_left.horizontal_radius + top_right.horizontal_radius,
-            bottom_left.horizontal_radius + bottom_right.horizontal_radius),
+            max(
+                top_left.horizontal_radius + top_right.horizontal_radius,
+                top_left.horizontal_radius + bottom_right.horizontal_radius),
+            max(
+                bottom_left.horizontal_radius + top_right.horizontal_radius,
+                bottom_left.horizontal_radius + bottom_right.horizontal_radius)),
         max(
-            top_left.vertical_radius + bottom_left.vertical_radius,
-            top_right.vertical_radius + bottom_right.vertical_radius)
+            max(
+                top_left.vertical_radius + bottom_left.vertical_radius,
+                top_left.vertical_radius + bottom_right.vertical_radius),
+            max(
+                top_right.vertical_radius + bottom_left.vertical_radius,
+                top_right.vertical_radius + bottom_right.vertical_radius))
     };
 
     RefPtr<Gfx::Bitmap> corner_bitmap;"
cddaeb43d31304a5cb7ccdf8cf08a2bdbfff84cf,2020-05-26 18:05:10,Sergey Bugaev,"kernel: Introduce ""sigaction"" pledge",False,"Introduce ""sigaction"" pledge",kernel,"diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index fa3599dec54d..20921c3e2b4a 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -2711,7 +2711,7 @@ int Process::sys$sigpending(sigset_t* set)
 
 int Process::sys$sigaction(int signum, const sigaction* act, sigaction* old_act)
 {
-    REQUIRE_PROMISE(stdio);
+    REQUIRE_PROMISE(sigaction);
     if (signum < 1 || signum >= 32 || signum == SIGKILL || signum == SIGSTOP)
         return -EINVAL;
     if (!validate_read_typed(act))
diff --git a/Kernel/Process.h b/Kernel/Process.h
index f24789fbdc84..fa52440707e5 100644
--- a/Kernel/Process.h
+++ b/Kernel/Process.h
@@ -72,6 +72,7 @@ extern VirtualAddress g_return_to_ring3_from_signal_trampoline;
     __ENUMERATE_PLEDGE_PROMISE(video)   \
     __ENUMERATE_PLEDGE_PROMISE(accept)  \
     __ENUMERATE_PLEDGE_PROMISE(settime) \
+    __ENUMERATE_PLEDGE_PROMISE(sigaction) \
     __ENUMERATE_PLEDGE_PROMISE(shared_buffer)
 
 enum class Pledge : u32 {"
0c75a14b4fe0c432e25ae797d5722ab3729660f7,2022-01-06 00:35:12,Timothy Flynn,ak: Move TimeSpecType concept inside the AK namespace,False,Move TimeSpecType concept inside the AK namespace,ak,"diff --git a/AK/Time.h b/AK/Time.h
index 806bc160af72..64f13230edf7 100644
--- a/AK/Time.h
+++ b/AK/Time.h
@@ -15,6 +15,8 @@
 struct timeval;
 struct timespec;
 
+namespace AK {
+
 // Concept to detect types which look like timespec without requiring the type.
 template<typename T>
 concept TimeSpecType = requires(T t)
@@ -23,10 +25,6 @@ concept TimeSpecType = requires(T t)
     t.tv_nsec;
 };
 
-// FIXME: remove once Clang formats these properly.
-// clang-format off
-namespace AK {
-
 // Month and day start at 1. Month must be >= 1 and <= 12.
 // The return value is 0-indexed, that is 0 is Sunday, 1 is Monday, etc.
 // Day may be negative or larger than the number of days
@@ -298,7 +296,6 @@ inline bool operator!=(const T& a, const T& b)
 }
 
 }
-// clang-format on
 
 using AK::day_of_week;
 using AK::day_of_year;"
82182f4560dd163bde695597a983326b0372f75d,2023-04-08 22:53:44,Nico Weber,libgfx: Give PrefixCodeGroup a deleted copy ctor,False,Give PrefixCodeGroup a deleted copy ctor,libgfx,"diff --git a/Userland/Libraries/LibGfx/ImageFormats/WebPLoader.cpp b/Userland/Libraries/LibGfx/ImageFormats/WebPLoader.cpp
index f067057b6ab5..5b2a3abf00ac 100644
--- a/Userland/Libraries/LibGfx/ImageFormats/WebPLoader.cpp
+++ b/Userland/Libraries/LibGfx/ImageFormats/WebPLoader.cpp
@@ -356,6 +356,10 @@ ErrorOr<u32> CanonicalCode::read_symbol(LittleEndianInputBitStream& bit_stream)
 // ""From here on, we refer to this set as a prefix code group.""
 class PrefixCodeGroup {
 public:
+    PrefixCodeGroup() = default;
+    PrefixCodeGroup(PrefixCodeGroup&&) = default;
+    PrefixCodeGroup(PrefixCodeGroup const&) = delete;
+
     CanonicalCode& operator[](int i) { return m_codes[i]; }
     CanonicalCode const& operator[](int i) const { return m_codes[i]; }"
64d48bcdc13809fcf08f50632646ee63d8d71c5a,2022-06-12 04:58:26,Andrew Kaster,libc: Force default visibility for the _ctype_ symbol,False,Force default visibility for the _ctype_ symbol,libc,"diff --git a/Userland/Libraries/LibC/ctype.h b/Userland/Libraries/LibC/ctype.h
index b7493b813879..62bbbbb866a9 100644
--- a/Userland/Libraries/LibC/ctype.h
+++ b/Userland/Libraries/LibC/ctype.h
@@ -20,7 +20,7 @@ __BEGIN_DECLS
 #define _X 0100
 #define _B 0200
 
-extern char const _ctype_[256];
+extern char const _ctype_[256] __attribute__((visibility(""default"")));
 
 static inline int __inline_isalnum(int c)
 {"
4491ef8ae68945f9a94f09ce321f206b9bea4498,2022-08-23 01:25:19,Andreas Kling,pixelpaint: Relayout ImageEditor immediately when image rect changes,False,Relayout ImageEditor immediately when image rect changes,pixelpaint,"diff --git a/Userland/Applications/PixelPaint/ImageEditor.cpp b/Userland/Applications/PixelPaint/ImageEditor.cpp
index 57d58f9ef26a..e3db66dc171b 100644
--- a/Userland/Applications/PixelPaint/ImageEditor.cpp
+++ b/Userland/Applications/PixelPaint/ImageEditor.cpp
@@ -551,6 +551,7 @@ void ImageEditor::image_did_change_rect(Gfx::IntRect const& new_image_rect)
 {
     set_original_rect(new_image_rect);
     set_content_rect(new_image_rect);
+    relayout();
 }
 
 void ImageEditor::image_select_layer(Layer* layer)"
71f2c342c41c9b4771d8accaa644922303634882,2022-04-21 16:46:56,Tim Schumacher,kernel: Limit free space between randomized memory allocations,False,Limit free space between randomized memory allocations,kernel,"diff --git a/Kernel/Memory/RegionTree.cpp b/Kernel/Memory/RegionTree.cpp
index 81d1fffe7cb3..ac2d55093d9c 100644
--- a/Kernel/Memory/RegionTree.cpp
+++ b/Kernel/Memory/RegionTree.cpp
@@ -121,6 +121,26 @@ ErrorOr<VirtualRange> RegionTree::allocate_range_randomized(size_t size, size_t
         if (!m_total_range.contains(random_address, size))
             continue;
 
+#if ARCH(I386)
+        // Attempt to limit the amount of wasted address space on platforms with small address sizes (read: i686).
+        // This works by only allowing arbitrary random allocations until a certain threshold, to create more possibilities for placing mappings.
+        // After the threshold has been reached, new allocations can only be placed randomly within a certain range from the adjacent allocations.
+        VirtualAddress random_address_end { random_address.get() + size };
+        constexpr size_t max_allocations_until_limited = 200;
+        constexpr size_t max_space_between_allocations = 1 * MiB;
+
+        if (m_regions.size() >= max_allocations_until_limited) {
+            auto* lower_allocation = m_regions.find_largest_not_above(random_address.get());
+            auto* upper_allocation = m_regions.find_smallest_not_below(random_address_end.get());
+
+            bool lower_in_range = (!lower_allocation || random_address - lower_allocation->range().end() <= VirtualAddress(max_space_between_allocations));
+            bool upper_in_range = (!upper_allocation || upper_allocation->range().base() - random_address_end <= VirtualAddress(max_space_between_allocations));
+
+            if (!upper_in_range && !lower_in_range)
+                continue;
+        }
+#endif
+
         auto range_or_error = allocate_range_specific(random_address, size);
         if (!range_or_error.is_error())
             return range_or_error.release_value();"
2f23912a55715304d8546f705e09dae6c6afaa36,2024-06-05 19:07:05,Andreas Kling,libgfx: Remove unused cruft from Painter.h,False,Remove unused cruft from Painter.h,libgfx,"diff --git a/Userland/Libraries/LibGfx/Painter.h b/Userland/Libraries/LibGfx/Painter.h
index b9a7638f8274..091a79c780e3 100644
--- a/Userland/Libraries/LibGfx/Painter.h
+++ b/Userland/Libraries/LibGfx/Painter.h
@@ -45,8 +45,6 @@ ALWAYS_INLINE static Color color_for_format(BitmapFormat format, ARGB32 value)
 
 class Painter {
 public:
-    static constexpr int LINE_SPACING = 4;
-
     explicit Painter(Gfx::Bitmap&);
     ~Painter() = default;
 
@@ -166,6 +164,4 @@ class PainterStateSaver {
     Painter& m_painter;
 };
 
-ByteString parse_ampersand_string(StringView, Optional<size_t>* underline_offset = nullptr);
-
 }"
5a983c238bdf3008d58bd7ee75d40b22e1b9b402,2020-06-07 22:59:40,Linus Groh,"libjs: Use switch/case for Value::to_{string{_w/o_side_effects},boolean}",False,"Use switch/case for Value::to_{string{_w/o_side_effects},boolean}",libjs,"diff --git a/Libraries/LibJS/Runtime/Value.cpp b/Libraries/LibJS/Runtime/Value.cpp
index e823cb54094b..0df5149a6f48 100644
--- a/Libraries/LibJS/Runtime/Value.cpp
+++ b/Libraries/LibJS/Runtime/Value.cpp
@@ -70,38 +70,32 @@ Accessor& Value::as_accessor()
 
 String Value::to_string_without_side_effects() const
 {
-    if (is_boolean())
-        return as_bool() ? ""true"" : ""false"";
-
-    if (is_null())
-        return ""null"";
-
-    if (is_undefined())
+    switch (m_type) {
+    case Type::Undefined:
         return ""undefined"";
-
-    if (is_number()) {
+    case Type::Null:
+        return ""null"";
+    case Type::Boolean:
+        return m_value.as_bool ? ""true"" : ""false"";
+    case Type::Number:
         if (is_nan())
             return ""NaN"";
-
         if (is_infinity())
-            return as_double() < 0 ? ""-Infinity"" : ""Infinity"";
-
+            return is_negative_infinity() ? ""-Infinity"" : ""Infinity"";
         if (is_integer())
             return String::number(as_i32());
-        return String::format(""%.4f"", as_double());
-    }
-
-    if (is_string())
+        return String::format(""%.4f"", m_value.as_double);
+    case Type::String:
         return m_value.as_string->string();
-
-    if (is_symbol())
-        return as_symbol().to_string();
-
-    if (is_accessor())
+    case Type::Symbol:
+        return m_value.as_symbol->to_string();
+    case Type::Object:
+        return String::format(""[object %s]"", as_object().class_name());
+    case Type::Accessor:
         return ""<accessor>"";
-
-    ASSERT(is_object());
-    return String::format(""[object %s]"", as_object().class_name());
+    default:
+        ASSERT_NOT_REACHED();
+    }
 }
 
 PrimitiveString* Value::to_primitive_string(Interpreter& interpreter)
@@ -116,60 +110,53 @@ PrimitiveString* Value::to_primitive_string(Interpreter& interpreter)
 
 String Value::to_string(Interpreter& interpreter) const
 {
-    if (is_boolean())
-        return as_bool() ? ""true"" : ""false"";
-
-    if (is_null())
-        return ""null"";
-
-    if (is_undefined())
+    switch (m_type) {
+    case Type::Undefined:
         return ""undefined"";
-
-    if (is_number()) {
+    case Type::Null:
+        return ""null"";
+    case Type::Boolean:
+        return m_value.as_bool ? ""true"" : ""false"";
+    case Type::Number:
         if (is_nan())
             return ""NaN"";
-
         if (is_infinity())
-            return as_double() < 0 ? ""-Infinity"" : ""Infinity"";
-
+            return is_negative_infinity() ? ""-Infinity"" : ""Infinity"";
         if (is_integer())
             return String::number(as_i32());
-        return String::format(""%.4f"", as_double());
-    }
-
-    if (is_symbol()) {
+        return String::format(""%.4f"", m_value.as_double);
+    case Type::String:
+        return m_value.as_string->string();
+    case Type::Symbol:
         interpreter.throw_exception<TypeError>(""Can't convert symbol to string"");
         return {};
-    }
-
-    if (is_object()) {
+    case Type::Object: {
         auto primitive_value = as_object().to_primitive(PreferredType::String);
         if (interpreter.exception())
             return {};
         return primitive_value.to_string(interpreter);
     }
-
-    ASSERT(is_string());
-    return m_value.as_string->string();
+    default:
+        ASSERT_NOT_REACHED();
+    }
 }
 
 bool Value::to_boolean() const
 {
     switch (m_type) {
+    case Type::Undefined:
+    case Type::Null:
+        return false;
     case Type::Boolean:
         return m_value.as_bool;
     case Type::Number:
-        if (is_nan()) {
+        if (is_nan())
             return false;
-        }
-        return !(m_value.as_double == 0 || m_value.as_double == -0);
-    case Type::Null:
-    case Type::Undefined:
-        return false;
+        return m_value.as_double != 0;
     case Type::String:
-        return !as_string().string().is_empty();
-    case Type::Object:
+        return !m_value.as_string->string().is_empty();
     case Type::Symbol:
+    case Type::Object:
         return true;
     default:
         ASSERT_NOT_REACHED();
@@ -185,37 +172,30 @@ Value Value::to_primitive(Interpreter&, PreferredType preferred_type) const
 
 Object* Value::to_object(Interpreter& interpreter) const
 {
-    if (is_object())
-        return &const_cast<Object&>(as_object());
-
-    if (is_string())
-        return StringObject::create(interpreter.global_object(), *m_value.as_string);
-
-    if (is_symbol())
-        return SymbolObject::create(interpreter.global_object(), *m_value.as_symbol);
-
-    if (is_number())
-        return NumberObject::create(interpreter.global_object(), m_value.as_double);
-
-    if (is_boolean())
-        return BooleanObject::create(interpreter.global_object(), m_value.as_bool);
-
-    if (is_null() || is_undefined()) {
+    switch (m_type) {
+    case Type::Undefined:
+    case Type::Null:
         interpreter.throw_exception<TypeError>(""ToObject on null or undefined."");
         return nullptr;
+    case Type::Boolean:
+        return BooleanObject::create(interpreter.global_object(), m_value.as_bool);
+    case Type::Number:
+        return NumberObject::create(interpreter.global_object(), m_value.as_double);
+    case Type::String:
+        return StringObject::create(interpreter.global_object(), *m_value.as_string);
+    case Type::Symbol:
+        return SymbolObject::create(interpreter.global_object(), *m_value.as_symbol);
+    case Type::Object:
+        return &const_cast<Object&>(as_object());
+    default:
+        dbg() << ""Dying because I can't to_object() on "" << *this;
+        ASSERT_NOT_REACHED();
     }
-
-    dbg() << ""Dying because I can't to_object() on "" << *this;
-    ASSERT_NOT_REACHED();
 }
 
 Value Value::to_number(Interpreter& interpreter) const
 {
     switch (m_type) {
-    case Type::Empty:
-    case Type::Accessor:
-        ASSERT_NOT_REACHED();
-        return {};
     case Type::Undefined:
         return js_nan();
     case Type::Null:
@@ -241,14 +221,15 @@ Value Value::to_number(Interpreter& interpreter) const
     case Type::Symbol:
         interpreter.throw_exception<TypeError>(""Can't convert symbol to number"");
         return {};
-    case Type::Object:
+    case Type::Object: {
         auto primitive = m_value.as_object->to_primitive(PreferredType::Number);
         if (interpreter.exception())
             return {};
         return primitive.to_number(interpreter);
     }
-
-    ASSERT_NOT_REACHED();
+    default:
+        ASSERT_NOT_REACHED();
+    }
 }
 
 i32 Value::as_i32() const
@@ -597,8 +578,6 @@ bool same_value_non_numeric(Interpreter&, Value lhs, Value rhs)
     ASSERT(lhs.type() == rhs.type());
 
     switch (lhs.type()) {
-    case Value::Type::Empty:
-        ASSERT_NOT_REACHED();
     case Value::Type::Undefined:
     case Value::Type::Null:
         return true;"
5c35807878e71e65cf477a279e638cd963284867,2024-10-15 03:24:53,John Diamond,documentation: Suggest installing clang-format version 18 precisely,False,Suggest installing clang-format version 18 precisely,documentation,"diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index c26e33277b21..42bfe88fb32a 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -63,7 +63,7 @@ Nobody is perfect, and sometimes we mess things up. That said, here are some goo
 **Do:**
 
 * Write in idiomatic project-style C++23, using the `AK` containers in all code.
-* Conform to the project coding style found in [CodingStyle.md](https://github.com/LadybirdBrowser/ladybird/blob/master/Documentation/CodingStyle.md). Use `clang-format` (version 18 or later) to automatically format C++ files. See [AdvancedBuildInstructions.md](https://github.com/LadybirdBrowser/ladybird/blob/master/Documentation/AdvancedBuildInstructions.md#clang-format-updates) for instructions on how to get an up-to-date version if your OS distribution does not ship clang-format-18.
+* Conform to the project coding style found in [CodingStyle.md](https://github.com/LadybirdBrowser/ladybird/blob/master/Documentation/CodingStyle.md). Use `clang-format` (version 18) to automatically format C++ files. See [AdvancedBuildInstructions.md](https://github.com/LadybirdBrowser/ladybird/blob/master/Documentation/AdvancedBuildInstructions.md#clang-format-updates) for instructions on how to get an up-to-date version if your OS distribution does not ship clang-format-18.
 * Choose expressive variable, function and class names. Make it as obvious as possible what the code is doing.
 * Split your changes into separate, atomic commits (i.e. A commit per feature or fix, where the build, tests and the system are all functioning).
 * Make sure your commits are rebased on the master branch.
diff --git a/Documentation/BuildInstructionsLadybird.md b/Documentation/BuildInstructionsLadybird.md
index 410c4419fad2..5401097a1536 100644
--- a/Documentation/BuildInstructionsLadybird.md
+++ b/Documentation/BuildInstructionsLadybird.md
@@ -126,7 +126,7 @@ brew install autoconf autoconf-archive automake ccache cmake ffmpeg nasm ninja p
 
 If you wish to use clang from homebrew instead:
 ```
-brew install llvm
+brew install llvm@18
 ```
 
 If you also plan to use the Qt chrome on macOS:
diff --git a/Documentation/CodingStyle.md b/Documentation/CodingStyle.md
index 56f1e88bb363..b34c9121d510 100644
--- a/Documentation/CodingStyle.md
+++ b/Documentation/CodingStyle.md
@@ -2,7 +2,7 @@
 
 For low-level styling (spaces, parentheses, brace placement, etc), all code should follow the format specified in `.clang-format` in the project root.
 
-**Important: Make sure you use `clang-format` version 18 or later!**
+**Important: Make sure you use `clang-format` version 18!**
 
 This document describes the coding style used for C++ code in the Ladybird Browser project. All new code should conform to this style.
 
diff --git a/Documentation/QtCreatorConfiguration.md b/Documentation/QtCreatorConfiguration.md
index a9beed92b71a..c547c685e991 100644
--- a/Documentation/QtCreatorConfiguration.md
+++ b/Documentation/QtCreatorConfiguration.md
@@ -38,7 +38,7 @@ Qt Creator should be set up correctly now, go ahead and explore the project and
 
 ## Auto-Formatting
 
-You can use `clang-format` to help you with the [style guide](CodingStyle.md). Before you proceed, check that you're actually using clang-format version 18, as some OSes will ship older clang-format versions by default.
+You can use `clang-format` to help you with the [style guide](CodingStyle.md). Before you proceed, check that you're actually using clang-format version 18, as some OSes will ship other clang-format versions by default.
 
 - In QtCreator, go to ""Help > About Plugins…""
 - Find the `Beautifier (experimental)` row (for example, by typing `beau` into the search)
diff --git a/Documentation/SelfHostedRunners.md b/Documentation/SelfHostedRunners.md
index 3804d33a7108..65ef3ff003c3 100644
--- a/Documentation/SelfHostedRunners.md
+++ b/Documentation/SelfHostedRunners.md
@@ -22,7 +22,7 @@ sudo add-apt-repository ppa:canonical-server/server-backports
 wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
 sudo add-apt-repository 'deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-16 main'
 apt update
-apt install git build-essential make cmake clang-format-16 gcc-13 g++-13 libstdc++-13-dev libgmp-dev ccache libmpfr-dev libmpc-dev ninja-build e2fsprogs qemu-utils qemu-system-i386 wabt
+apt install git build-essential make cmake clang-format-18 gcc-13 g++-13 libstdc++-13-dev libgmp-dev ccache libmpfr-dev libmpc-dev ninja-build e2fsprogs qemu-utils qemu-system-i386 wabt
 ```
 ### Force usage of GCC 13
 ```shell"
161c862f2193f1f565cbe37b102d3003f4c69f78,2019-08-27 10:23:23,Andreas Kling,windowserver: Add an icon for the system menu / About action,False,Add an icon for the system menu / About action,windowserver,"diff --git a/Base/res/icons/16x16/ladybug.png b/Base/res/icons/16x16/ladybug.png
new file mode 100644
index 000000000000..525126859dcd
Binary files /dev/null and b/Base/res/icons/16x16/ladybug.png differ
diff --git a/Servers/WindowServer/WSWindowManager.cpp b/Servers/WindowServer/WSWindowManager.cpp
index 5d738584de3e..04dcb9022a80 100644
--- a/Servers/WindowServer/WSWindowManager.cpp
+++ b/Servers/WindowServer/WSWindowManager.cpp
@@ -67,7 +67,7 @@ WSWindowManager::WSWindowManager()
     m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, WSMenuItem::Separator));
     m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, 100, ""Reload WM Config File""));
     m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, WSMenuItem::Separator));
-    m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, 200, ""About...""));
+    m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, 200, ""About..."", String(), true, false, false, load_png(""/res/icons/16x16/ladybug.png"")));
     m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, WSMenuItem::Separator));
     m_system_menu->add_item(make<WSMenuItem>(*m_system_menu, 300, ""Shutdown...""));
     m_system_menu->on_item_activation = [this, apps](WSMenuItem& item) {"
bd72ff566959d8a3fc77e9b5f6b47d475453e3e8,2024-07-19 12:52:08,Tim Ledbetter,libweb: Expose `ChildNode` methods on the `DocumentType` IDL interface,False,Expose `ChildNode` methods on the `DocumentType` IDL interface,libweb,"diff --git a/Userland/Libraries/LibWeb/DOM/DocumentType.idl b/Userland/Libraries/LibWeb/DOM/DocumentType.idl
index 7834d9d49d92..2c389387d2ec 100644
--- a/Userland/Libraries/LibWeb/DOM/DocumentType.idl
+++ b/Userland/Libraries/LibWeb/DOM/DocumentType.idl
@@ -8,3 +8,5 @@ interface DocumentType : Node {
     readonly attribute DOMString publicId;
     readonly attribute DOMString systemId;
 };
+
+DocumentType includes ChildNode;"
0ebf56efb028669b4c24c8193c2d13ced8397512,2020-09-01 02:34:55,asynts,libcompress: Add support for dynamic deflate blocks.,False,Add support for dynamic deflate blocks.,libcompress,"diff --git a/Libraries/LibCompress/Deflate.cpp b/Libraries/LibCompress/Deflate.cpp
index f1257ee0bfec..e827bdffe84e 100644
--- a/Libraries/LibCompress/Deflate.cpp
+++ b/Libraries/LibCompress/Deflate.cpp
@@ -217,7 +217,8 @@ size_t DeflateDecompressor::read(Bytes bytes)
         }
 
         if (block_type == 0b10) {
-            CanonicalCode literal_codes, distance_codes;
+            CanonicalCode literal_codes;
+            Optional<CanonicalCode> distance_codes;
             decode_codes(literal_codes, distance_codes);
 
             m_state = State::ReadingCompressedBlock;
@@ -345,12 +346,97 @@ u32 DeflateDecompressor::decode_distance(u32 symbol)
     ASSERT_NOT_REACHED();
 }
 
-void DeflateDecompressor::decode_codes(CanonicalCode&, CanonicalCode&)
+void DeflateDecompressor::decode_codes(CanonicalCode& literal_code, Optional<CanonicalCode>& distance_code)
 {
-    // FIXME: This was already implemented but I removed it because it was quite chaotic and untested.
-    //        I am planning to come back to this. @asynts
-    //        https://github.com/SerenityOS/serenity/blob/208cb995babb13e0af07bb9d3219f0a9fe7bca7d/Libraries/LibCompress/Deflate.cpp#L144-L242
-    TODO();
+    auto literal_code_count = m_input_stream.read_bits(5) + 257;
+    auto distance_code_count = m_input_stream.read_bits(5) + 1;
+    auto code_length_count = m_input_stream.read_bits(4) + 4;
+
+    // First we have to extract the code lengths of the code that was used to encode the code lengths of
+    // the code that was used to encode the block.
+
+    u8 code_lengths_code_lengths[19] = { 0 };
+    for (size_t i = 0; i < code_length_count; ++i) {
+        static const size_t indices[] { 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 };
+        code_lengths_code_lengths[indices[i]] = m_input_stream.read_bits(3);
+    }
+
+    // Now we can extract the code that was used to encode the code lengths of the code that was used to
+    // encode the block.
+
+    auto code_length_code_result = CanonicalCode::from_bytes({ code_lengths_code_lengths, sizeof(code_lengths_code_lengths) });
+    if (!code_length_code_result.has_value()) {
+        m_error = true;
+        return;
+    }
+    const auto code_length_code = code_length_code_result.value();
+
+    // Next we extract the code lengths of the code that was used to encode the block.
+
+    Vector<u8> code_lengths;
+    while (code_lengths.size() < literal_code_count + distance_code_count) {
+        auto symbol = code_length_code.read_symbol(m_input_stream);
+
+        if (symbol <= 15) {
+            code_lengths.append(static_cast<u8>(symbol));
+            continue;
+        } else if (symbol == 17) {
+            auto nrepeat = 3 + m_input_stream.read_bits(3);
+            for (size_t j = 0; j < nrepeat; ++j)
+                code_lengths.append(0);
+            continue;
+        } else if (symbol == 18) {
+            auto nrepeat = 11 + m_input_stream.read_bits(7);
+            for (size_t j = 0; j < nrepeat; ++j)
+                code_lengths.append(0);
+            continue;
+        } else {
+            ASSERT(symbol == 16);
+
+            if (code_lengths.is_empty()) {
+                m_error = true;
+                return;
+            }
+
+            auto nrepeat = 3 + m_input_stream.read_bits(3);
+            for (size_t j = 0; j < nrepeat; ++j)
+                code_lengths.append(code_lengths.last());
+        }
+    }
+
+    if (code_lengths.size() != literal_code_count + distance_code_count) {
+        m_error = true;
+        return;
+    }
+
+    // Now we extract the code that was used to encode literals and lengths in the block.
+
+    auto literal_code_result = CanonicalCode::from_bytes(code_lengths.span().trim(literal_code_count));
+    if (!literal_code_result.has_value()) {
+        m_error = true;
+        return;
+    }
+    literal_code = literal_code_result.value();
+
+    // Now we extract the code that was used to encode distances in the block.
+
+    if (distance_code_count == 1) {
+        auto length = code_lengths[literal_code_count];
+
+        if (length == 0) {
+            return;
+        } else if (length != 1) {
+            m_error = true;
+            return;
+        }
+    }
+
+    auto distance_code_result = CanonicalCode::from_bytes(code_lengths.span().slice(literal_code_count));
+    if (!distance_code_result.has_value()) {
+        m_error = true;
+        return;
+    }
+    distance_code = distance_code_result.value();
 }
 
 }
diff --git a/Libraries/LibCompress/Deflate.h b/Libraries/LibCompress/Deflate.h
index 8b54214cbb52..a567c7b9d370 100644
--- a/Libraries/LibCompress/Deflate.h
+++ b/Libraries/LibCompress/Deflate.h
@@ -99,7 +99,7 @@ class DeflateDecompressor final : public InputStream {
 private:
     u32 decode_run_length(u32);
     u32 decode_distance(u32);
-    void decode_codes(CanonicalCode&, CanonicalCode&);
+    void decode_codes(CanonicalCode& literal_code, Optional<CanonicalCode>& distance_code);
 
     bool m_read_final_bock { false };"
5c6326ae230ded7783ce949ec72b0323d9af41f4,2022-03-21 00:30:25,thankyouverycool,libgui: Add automatic scrolling to GlyphMapWidget,False,Add automatic scrolling to GlyphMapWidget,libgui,"diff --git a/Userland/Libraries/LibGUI/GlyphMapWidget.cpp b/Userland/Libraries/LibGUI/GlyphMapWidget.cpp
index bd4d3d2683ca..80fbb4eb675a 100644
--- a/Userland/Libraries/LibGUI/GlyphMapWidget.cpp
+++ b/Userland/Libraries/LibGUI/GlyphMapWidget.cpp
@@ -54,6 +54,19 @@ GlyphMapWidget::GlyphMapWidget()
     horizontal_scrollbar().set_visible(false);
     did_change_font();
     set_active_glyph('A');
+
+    m_automatic_selection_scroll_timer = add<Core::Timer>(20, [this] {
+        if (!m_in_drag_select) {
+            m_automatic_selection_scroll_timer->stop();
+            return;
+        }
+        auto glyph = glyph_at_position_clamped(m_last_mousemove_position);
+        m_selection.extend_to(glyph);
+        set_active_glyph(glyph, ShouldResetSelection::No);
+        scroll_to_glyph(glyph);
+        update();
+    });
+    m_automatic_selection_scroll_timer->stop();
 }
 
 void GlyphMapWidget::resize_event(ResizeEvent& event)
@@ -168,6 +181,7 @@ void GlyphMapWidget::mousedown_event(MouseEvent& event)
         if (event.shift())
             m_selection.extend_to(glyph);
         m_in_drag_select = true;
+        m_automatic_selection_scroll_timer->start();
         set_active_glyph(glyph, event.shift() ? ShouldResetSelection::No : ShouldResetSelection::Yes);
     }
 }
@@ -187,14 +201,7 @@ void GlyphMapWidget::mouseup_event(GUI::MouseEvent& event)
 
 void GlyphMapWidget::mousemove_event(GUI::MouseEvent& event)
 {
-    if (!m_in_drag_select)
-        return;
-
-    auto glyph = glyph_at_position_clamped(event.position());
-    m_selection.extend_to(glyph);
-    set_active_glyph(glyph, ShouldResetSelection::No);
-    scroll_to_glyph(glyph);
-    update();
+    m_last_mousemove_position = event.position();
 }
 
 void GlyphMapWidget::doubleclick_event(MouseEvent& event)
diff --git a/Userland/Libraries/LibGUI/GlyphMapWidget.h b/Userland/Libraries/LibGUI/GlyphMapWidget.h
index b5ac0b8df5d2..9d1dfe2b3c9c 100644
--- a/Userland/Libraries/LibGUI/GlyphMapWidget.h
+++ b/Userland/Libraries/LibGUI/GlyphMapWidget.h
@@ -8,6 +8,7 @@
 
 #pragma once
 
+#include <LibCore/Timer.h>
 #include <LibGUI/AbstractScrollableWidget.h>
 #include <LibGUI/TextRange.h>
 #include <LibGfx/BitmapFont.h>
@@ -94,6 +95,8 @@ class GlyphMapWidget final : public AbstractScrollableWidget {
     int m_visible_glyphs { 0 };
     bool m_in_drag_select { false };
     Unicode::CodePointRange m_active_range { 0x0000, 0x10FFFF };
+    RefPtr<Core::Timer> m_automatic_selection_scroll_timer;
+    Gfx::IntPoint m_last_mousemove_position;
 };
 
 }"
6fff03713ccc1bb82bffe172cc41f2d5c28901dc,2022-12-25 20:28:58,Andrew Kaster,ladybird: Ensure that installed ladybird can launch WebContent process,False,Ensure that installed ladybird can launch WebContent process,ladybird,"diff --git a/Ladybird/CMakeLists.txt b/Ladybird/CMakeLists.txt
index cd145cbcbff5..bc58b994b030 100644
--- a/Ladybird/CMakeLists.txt
+++ b/Ladybird/CMakeLists.txt
@@ -96,9 +96,9 @@ add_custom_target(debug
 
 qt_finalize_executable(ladybird)
 
+add_subdirectory(WebContent)
+add_dependencies(ladybird WebContent)
+
 if(NOT CMAKE_SKIP_INSTALL_RULES)
     include(cmake/InstallRules.cmake)
 endif()
-
-add_subdirectory(WebContent)
-add_dependencies(ladybird WebContent)
diff --git a/Ladybird/WebContent/CMakeLists.txt b/Ladybird/WebContent/CMakeLists.txt
index 5d4d995d95ca..1b174ebbe638 100644
--- a/Ladybird/WebContent/CMakeLists.txt
+++ b/Ladybird/WebContent/CMakeLists.txt
@@ -1,10 +1,10 @@
 set(WEBCONTENT_SOURCE_DIR ${SERENITY_SOURCE_DIR}/Userland/Services/WebContent/)
 
 set(WEBCONTENT_SOURCES
-    ${WEBCONTENT_SOURCE_DIR}/ConnectionFromClient.cpp    
-    ${WEBCONTENT_SOURCE_DIR}/ConsoleGlobalObject.cpp    
-    ${WEBCONTENT_SOURCE_DIR}/PageHost.cpp    
-    ${WEBCONTENT_SOURCE_DIR}/WebContentConsoleClient.cpp    
+    ${WEBCONTENT_SOURCE_DIR}/ConnectionFromClient.cpp
+    ${WEBCONTENT_SOURCE_DIR}/ConsoleGlobalObject.cpp
+    ${WEBCONTENT_SOURCE_DIR}/PageHost.cpp
+    ${WEBCONTENT_SOURCE_DIR}/WebContentConsoleClient.cpp
     ../EventLoopPluginQt.cpp
     ../FontPluginQt.cpp
     ../ImageCodecPluginLadybird.cpp
@@ -14,7 +14,7 @@ set(WEBCONTENT_SOURCES
     ../WebSocketClientManagerLadybird.cpp
     ../WebSocketLadybird.cpp
     main.cpp
-)    
+)
 
 qt_add_executable(WebContent ${WEBCONTENT_SOURCES})
 
diff --git a/Ladybird/WebContent/main.cpp b/Ladybird/WebContent/main.cpp
index 911348b3b16b..2623693cfa66 100644
--- a/Ladybird/WebContent/main.cpp
+++ b/Ladybird/WebContent/main.cpp
@@ -38,10 +38,10 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     // FIXME: Refactor things so we can get rid of this somehow.
     Core::EventLoop event_loop;
 
-    platform_init();
-
     QGuiApplication app(arguments.argc, arguments.argv);
 
+    platform_init();
+
     Web::Platform::EventLoopPlugin::install(*new Ladybird::EventLoopPluginQt);
     Web::Platform::ImageCodecPlugin::install(*new Ladybird::ImageCodecPluginLadybird);
 
diff --git a/Ladybird/WebContentView.cpp b/Ladybird/WebContentView.cpp
index c3b82d33a483..071c4f72297d 100644
--- a/Ladybird/WebContentView.cpp
+++ b/Ladybird/WebContentView.cpp
@@ -570,6 +570,8 @@ void WebContentView::create_client()
         MUST(Core::System::setenv(""FD_PASSING_SOCKET""sv, fd_passing_socket_string, true));
 
         auto rc = execlp(""./WebContent/WebContent"", ""WebContent"", nullptr);
+        if (rc < 0)
+            rc = execlp((QCoreApplication::applicationDirPath() + ""/WebContent"").toStdString().c_str(), ""WebContent"", nullptr);
         if (rc < 0)
             perror(""execlp"");
         VERIFY_NOT_REACHED();
diff --git a/Ladybird/cmake/InstallRules.cmake b/Ladybird/cmake/InstallRules.cmake
index d2a5932c29aa..592d2f522479 100644
--- a/Ladybird/cmake/InstallRules.cmake
+++ b/Ladybird/cmake/InstallRules.cmake
@@ -18,10 +18,23 @@ install(TARGETS ladybird
     DESTINATION ${CMAKE_INSTALL_LIBDIR}
 )
 
+install(TARGETS WebContent
+  EXPORT ladybirdTargets
+  RUNTIME
+    COMPONENT ladybird_Runtime
+    DESTINATION ${CMAKE_INSTALL_BINDIR}
+  BUNDLE
+    COMPONENT ladybird_Runtime
+    DESTINATION bundle
+)
+
 include(""${Lagom_SOURCE_DIR}/get_linked_lagom_libraries.cmake"")
 get_linked_lagom_libraries(ladybird ladybird_lagom_libraries)
+get_linked_lagom_libraries(WebContent webcontent_lagom_libraries)
+list(APPEND all_required_lagom_libraries ${ladybird_lagom_libraries} ${webcontent_lagom_libraries})
+list(REMOVE_DUPLICATES all_required_lagom_libraries)
 
-install(TARGETS ${ladybird_lagom_libraries}
+install(TARGETS ${all_required_lagom_libraries}
   EXPORT ladybirdTargets
   COMPONENT ladybird_Runtime
   LIBRARY
diff --git a/Ladybird/main.cpp b/Ladybird/main.cpp
index df5241edb00d..e61cbb52158b 100644
--- a/Ladybird/main.cpp
+++ b/Ladybird/main.cpp
@@ -17,18 +17,18 @@ Browser::Settings* s_settings;
 
 ErrorOr<int> serenity_main(Main::Arguments arguments)
 {
-    platform_init();
-
-    // NOTE: We only instantiate this to ensure that Gfx::FontDatabase has its default queries initialized.
-    Gfx::FontDatabase::set_default_font_query(""Katica 10 400 0"");
-    Gfx::FontDatabase::set_fixed_width_font_query(""Csilla 10 400 0"");
-
     // NOTE: This is only used for the Core::Socket inside the IPC connections.
     // FIXME: Refactor things so we can get rid of this somehow.
     Core::EventLoop event_loop;
 
     QApplication app(arguments.argc, arguments.argv);
 
+    platform_init();
+
+    // NOTE: We only instantiate this to ensure that Gfx::FontDatabase has its default queries initialized.
+    Gfx::FontDatabase::set_default_font_query(""Katica 10 400 0"");
+    Gfx::FontDatabase::set_fixed_width_font_query(""Csilla 10 400 0"");
+
     String url;
     Core::ArgsParser args_parser;
     args_parser.set_general_help(""The Ladybird web browser :^)"");"
20dbbdf90c271a948a7cf809227d9998424b8424,2022-03-04 00:19:50,Karol Kosek,spreadsheet: Simplify enabling actions on selection,False,Simplify enabling actions on selection,spreadsheet,"diff --git a/Userland/Applications/Spreadsheet/SpreadsheetWidget.cpp b/Userland/Applications/Spreadsheet/SpreadsheetWidget.cpp
index 746ff3b2b31f..733f8b518743 100644
--- a/Userland/Applications/Spreadsheet/SpreadsheetWidget.cpp
+++ b/Userland/Applications/Spreadsheet/SpreadsheetWidget.cpp
@@ -274,10 +274,13 @@ void SpreadsheetWidget::setup_tabs(NonnullRefPtrVector<Sheet> new_sheets)
             auto& sheet = *sheet_ptr;
 
             VERIFY(!selection.is_empty());
+            m_cut_action->set_enabled(true);
+            m_copy_action->set_enabled(true);
+            m_current_cell_label->set_enabled(true);
+            m_cell_value_editor->set_enabled(true);
 
             if (selection.size() == 1) {
                 auto& position = selection.first();
-                m_current_cell_label->set_enabled(true);
                 m_current_cell_label->set_text(position.to_cell_identifier(sheet));
 
                 auto& cell = sheet.ensure(position);
@@ -292,9 +295,6 @@ void SpreadsheetWidget::setup_tabs(NonnullRefPtrVector<Sheet> new_sheets)
                     sheet.update();
                     update();
                 };
-                m_cell_value_editor->set_enabled(true);
-                m_cut_action->set_enabled(true);
-                m_copy_action->set_enabled(true);
                 static_cast<CellSyntaxHighlighter*>(const_cast<Syntax::Highlighter*>(m_cell_value_editor->syntax_highlighter()))->set_cell(&cell);
                 return;
             }
@@ -302,7 +302,6 @@ void SpreadsheetWidget::setup_tabs(NonnullRefPtrVector<Sheet> new_sheets)
             // There are many cells selected, change all of them.
             StringBuilder builder;
             builder.appendff(""<{}>"", selection.size());
-            m_current_cell_label->set_enabled(true);
             m_current_cell_label->set_text(builder.string_view());
 
             Vector<Cell&> cells;
@@ -331,7 +330,6 @@ void SpreadsheetWidget::setup_tabs(NonnullRefPtrVector<Sheet> new_sheets)
                     update();
                 }
             };
-            m_cell_value_editor->set_enabled(true);
             static_cast<CellSyntaxHighlighter*>(const_cast<Syntax::Highlighter*>(m_cell_value_editor->syntax_highlighter()))->set_cell(&first_cell);
         };
         m_selected_view->on_selection_dropped = [&]() {"
e75eb21a54d41a1f77abe6f7ca0f158eca987baa,2023-01-04 16:20:03,implicitfield,"libweb: Support ""start"" and ""end"" values for justify-content",False,"Support ""start"" and ""end"" values for justify-content",libweb,"diff --git a/Userland/Libraries/LibWeb/CSS/Enums.json b/Userland/Libraries/LibWeb/CSS/Enums.json
index 9c306150b908..34cdc7fb463f 100644
--- a/Userland/Libraries/LibWeb/CSS/Enums.json
+++ b/Userland/Libraries/LibWeb/CSS/Enums.json
@@ -142,6 +142,8 @@
         ""optimizequality=smooth""
     ],
     ""justify-content"": [
+        ""start"",
+        ""end"",
         ""flex-start"",
         ""flex-end"",
         ""center"",
diff --git a/Userland/Libraries/LibWeb/CSS/Identifiers.json b/Userland/Libraries/LibWeb/CSS/Identifiers.json
index 24c25a7f94e8..a4b4628b62a8 100644
--- a/Userland/Libraries/LibWeb/CSS/Identifiers.json
+++ b/Userland/Libraries/LibWeb/CSS/Identifiers.json
@@ -109,6 +109,7 @@
   ""double"",
   ""e-resize"",
   ""enabled"",
+  ""end"",
   ""ew-resize"",
   ""fantasy"",
   ""fast"",
@@ -249,6 +250,7 @@
   ""srgb"",
   ""standalone"",
   ""standard"",
+  ""start"",
   ""static"",
   ""sticky"",
   ""stretch"",
diff --git a/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
index c730e67b69a4..1d7b6aaa9fec 100644
--- a/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
@@ -1231,6 +1231,7 @@ void FlexFormattingContext::distribute_any_remaining_free_space()
         bool justification_is_centered = false;
 
         switch (flex_container().computed_values().justify_content()) {
+        case CSS::JustifyContent::Start:
         case CSS::JustifyContent::FlexStart:
             if (is_direction_reverse()) {
                 flex_region_render_cursor = FlexRegionRenderCursor::Right;
@@ -1239,6 +1240,7 @@ void FlexFormattingContext::distribute_any_remaining_free_space()
                 initial_offset = 0;
             }
             break;
+        case CSS::JustifyContent::End:
         case CSS::JustifyContent::FlexEnd:
             if (is_direction_reverse()) {
                 initial_offset = 0;
@@ -2002,6 +2004,20 @@ Gfx::FloatPoint FlexFormattingContext::calculate_static_position(Box const& box)
     bool pack_from_end = true;
     float main_offset = 0;
     switch (flex_container().computed_values().justify_content()) {
+    case CSS::JustifyContent::Start:
+        if (is_direction_reverse()) {
+            main_offset = specified_main_size(flex_container());
+        } else {
+            main_offset = 0;
+        }
+        break;
+    case CSS::JustifyContent::End:
+        if (is_direction_reverse()) {
+            main_offset = 0;
+        } else {
+            main_offset = specified_main_size(flex_container());
+        }
+        break;
     case CSS::JustifyContent::FlexStart:
         if (is_direction_reverse()) {
             pack_from_end = false;"
a15ed8743d03c6c683f19447be20ca7dac768485,2021-11-11 02:28:58,Andreas Kling,ak: Make ByteBuffer::try_* functions return ErrorOr<void>,False,Make ByteBuffer::try_* functions return ErrorOr<void>,ak,"diff --git a/AK/ByteBuffer.h b/AK/ByteBuffer.h
index 641371cd68fb..045c6ebfd408 100644
--- a/AK/ByteBuffer.h
+++ b/AK/ByteBuffer.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, Gunnar Beutner <gbeutner@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
@@ -8,6 +8,7 @@
 #pragma once
 
 #include <AK/Assertions.h>
+#include <AK/Error.h>
 #include <AK/Span.h>
 #include <AK/Types.h>
 #include <AK/kmalloc.h>
@@ -27,8 +28,7 @@ class ByteBuffer {
 
     ByteBuffer(ByteBuffer const& other)
     {
-        auto ok = try_resize(other.size());
-        VERIFY(ok);
+        MUST(try_resize(other.size()));
         VERIFY(m_size == other.size());
         __builtin_memcpy(data(), other.data(), other.size());
     }
@@ -54,8 +54,7 @@ class ByteBuffer {
             if (m_size > other.size()) {
                 trim(other.size(), true);
             } else {
-                auto ok = try_resize(other.size());
-                VERIFY(ok);
+                MUST(try_resize(other.size()));
             }
             __builtin_memcpy(data(), other.data(), other.size());
         }
@@ -65,7 +64,7 @@ class ByteBuffer {
     [[nodiscard]] static Optional<ByteBuffer> create_uninitialized(size_t size)
     {
         auto buffer = ByteBuffer();
-        if (!buffer.try_resize(size))
+        if (buffer.try_resize(size).is_error())
             return {};
         return { move(buffer) };
     }
@@ -157,64 +156,58 @@ class ByteBuffer {
 
     ALWAYS_INLINE void resize(size_t new_size)
     {
-        auto ok = try_resize(new_size);
-        VERIFY(ok);
+        MUST(try_resize(new_size));
     }
 
     ALWAYS_INLINE void ensure_capacity(size_t new_capacity)
     {
-        auto ok = try_ensure_capacity(new_capacity);
-        VERIFY(ok);
+        MUST(try_ensure_capacity(new_capacity));
     }
 
-    [[nodiscard]] ALWAYS_INLINE bool try_resize(size_t new_size)
+    ErrorOr<void> try_resize(size_t new_size)
     {
         if (new_size <= m_size) {
             trim(new_size, false);
-            return true;
+            return {};
         }
-        if (!try_ensure_capacity(new_size))
-            return false;
+        TRY(try_ensure_capacity(new_size));
         m_size = new_size;
-        return true;
+        return {};
     }
 
-    [[nodiscard]] ALWAYS_INLINE bool try_ensure_capacity(size_t new_capacity)
+    ErrorOr<void> try_ensure_capacity(size_t new_capacity)
     {
         if (new_capacity <= capacity())
-            return true;
+            return {};
         return try_ensure_capacity_slowpath(new_capacity);
     }
 
     void append(ReadonlyBytes const& bytes)
     {
-        auto ok = try_append(bytes);
-        VERIFY(ok);
+        MUST(try_append(bytes));
     }
 
     void append(void const* data, size_t data_size) { append({ data, data_size }); }
 
-    [[nodiscard]] bool try_append(ReadonlyBytes const& bytes)
+    ErrorOr<void> try_append(ReadonlyBytes const& bytes)
     {
         return try_append(bytes.data(), bytes.size());
     }
 
-    [[nodiscard]] bool try_append(void const* data, size_t data_size)
+    ErrorOr<void> try_append(void const* data, size_t data_size)
     {
         if (data_size == 0)
-            return true;
+            return {};
         VERIFY(data != nullptr);
         int old_size = size();
-        if (!try_resize(size() + data_size))
-            return false;
+        TRY(try_resize(size() + data_size));
         __builtin_memcpy(this->data() + old_size, data, data_size);
-        return true;
+        return {};
     }
 
     void operator+=(ByteBuffer const& other)
     {
-        auto ok = try_append(other.data(), other.size());
-        VERIFY(ok);
+        MUST(try_append(other.data(), other.size()));
     }
 
     void overwrite(size_t offset, void const* data, size_t data_size)
@@ -269,12 +262,12 @@ class ByteBuffer {
         m_inline = true;
     }
 
-    [[nodiscard]] NEVER_INLINE bool try_ensure_capacity_slowpath(size_t new_capacity)
+    NEVER_INLINE ErrorOr<void> try_ensure_capacity_slowpath(size_t new_capacity)
     {
         new_capacity = kmalloc_good_size(new_capacity);
         auto new_buffer = (u8*)kmalloc(new_capacity);
         if (!new_buffer)
-            return false;
+            return Error::from_errno(ENOMEM);
 
         if (m_inline) {
             __builtin_memcpy(new_buffer, data(), m_size);
@@ -286,7 +279,7 @@ class ByteBuffer {
         m_outline_buffer = new_buffer;
         m_outline_capacity = new_capacity;
         m_inline = false;
-        return true;
+        return {};
     }
 
     union {
diff --git a/AK/StringBuilder.cpp b/AK/StringBuilder.cpp
index df4331f9ca7f..f382be467c24 100644
--- a/AK/StringBuilder.cpp
+++ b/AK/StringBuilder.cpp
@@ -18,18 +18,19 @@
 
 namespace AK {
 
-inline bool StringBuilder::will_append(size_t size)
+inline ErrorOr<void> StringBuilder::will_append(size_t size)
 {
     Checked<size_t> needed_capacity = m_buffer.size();
     needed_capacity += size;
     VERIFY(!needed_capacity.has_overflow());
     // Prefer to completely use the existing capacity first
     if (needed_capacity <= m_buffer.capacity())
-        return true;
+        return {};
     Checked<size_t> expanded_capacity = needed_capacity;
     expanded_capacity *= 2;
     VERIFY(!expanded_capacity.has_overflow());
-    return m_buffer.try_ensure_capacity(expanded_capacity.value());
+    TRY(m_buffer.try_ensure_capacity(expanded_capacity.value()));
+    return {};
 }
 
 StringBuilder::StringBuilder(size_t initial_capacity)
@@ -41,10 +42,8 @@ void StringBuilder::append(StringView const& str)
 {
     if (str.is_empty())
         return;
-    auto ok = will_append(str.length());
-    VERIFY(ok);
-    ok = m_buffer.try_append(str.characters_without_null_termination(), str.length());
-    VERIFY(ok);
+    MUST(will_append(str.length()));
+    MUST(m_buffer.try_append(str.characters_without_null_termination(), str.length()));
 }
 
 void StringBuilder::append(char const* characters, size_t length)
@@ -54,10 +53,8 @@ void StringBuilder::append(char const* characters, size_t length)
 
 void StringBuilder::append(char ch)
 {
-    auto ok = will_append(1);
-    VERIFY(ok);
-    ok = m_buffer.try_append(&ch, 1);
-    VERIFY(ok);
+    MUST(will_append(1));
+    MUST(m_buffer.try_append(&ch, 1));
 }
 
 void StringBuilder::appendvf(char const* fmt, va_list ap)
diff --git a/AK/StringBuilder.h b/AK/StringBuilder.h
index bc29e12f06c7..fc7f830dc457 100644
--- a/AK/StringBuilder.h
+++ b/AK/StringBuilder.h
@@ -64,7 +64,7 @@ class StringBuilder {
     }
 
 private:
-    bool will_append(size_t);
+    ErrorOr<void> will_append(size_t);
     u8* data() { return m_buffer.data(); }
     u8 const* data() const { return m_buffer.data(); }
 
diff --git a/Tests/LibTLS/TestTLSHandshake.cpp b/Tests/LibTLS/TestTLSHandshake.cpp
index 9494f258e891..6218e5b0d1a5 100644
--- a/Tests/LibTLS/TestTLSHandshake.cpp
+++ b/Tests/LibTLS/TestTLSHandshake.cpp
@@ -96,7 +96,7 @@ TEST_CASE(test_TLS_hello_handshake)
             loop.quit(1);
         } else {
             //            print_buffer(data.value(), 16);
-            if (!contents.try_append(data.value().data(), data.value().size())) {
+            if (contents.try_append(data.value().data(), data.value().size()).is_error()) {
                 FAIL(""Allocation failure"");
                 loop.quit(1);
             }
diff --git a/Userland/Applications/Debugger/main.cpp b/Userland/Applications/Debugger/main.cpp
index ec3d4c4efd28..9751c28df237 100644
--- a/Userland/Applications/Debugger/main.cpp
+++ b/Userland/Applications/Debugger/main.cpp
@@ -67,7 +67,7 @@ static bool handle_disassemble_command(const String& command, void* first_instru
         auto value = g_debug_session->peek(reinterpret_cast<u32*>(first_instruction) + i);
         if (!value.has_value())
             break;
-        if (!code.try_append(&value, sizeof(u32)))
+        if (code.try_append(&value, sizeof(u32)).is_error())
             break;
     }
 
diff --git a/Userland/Libraries/LibC/netdb.cpp b/Userland/Libraries/LibC/netdb.cpp
index d521a78aff5b..d91bd4b1f1cd 100644
--- a/Userland/Libraries/LibC/netdb.cpp
+++ b/Userland/Libraries/LibC/netdb.cpp
@@ -460,7 +460,7 @@ static bool fill_getserv_buffers(const char* line, ssize_t read)
                 break;
             }
             auto alias = split_line[i].to_byte_buffer();
-            if (!alias.try_append(""\0"", sizeof(char)))
+            if (alias.try_append(""\0"", sizeof(char)).is_error())
                 return false;
             __getserv_alias_list_buffer.append(move(alias));
         }
@@ -630,7 +630,7 @@ static bool fill_getproto_buffers(const char* line, ssize_t read)
             if (split_line[i].starts_with('#'))
                 break;
             auto alias = split_line[i].to_byte_buffer();
-            if (!alias.try_append(""\0"", sizeof(char)))
+            if (alias.try_append(""\0"", sizeof(char)).is_error())
                 return false;
             __getproto_alias_list_buffer.append(move(alias));
         }
diff --git a/Userland/Libraries/LibCrypto/ASN1/PEM.cpp b/Userland/Libraries/LibCrypto/ASN1/PEM.cpp
index c901febe4163..90f957cfc971 100644
--- a/Userland/Libraries/LibCrypto/ASN1/PEM.cpp
+++ b/Userland/Libraries/LibCrypto/ASN1/PEM.cpp
@@ -39,7 +39,7 @@ ByteBuffer decode_pem(ReadonlyBytes data)
                 dbgln(""Failed to decode PEM, likely bad Base64"");
                 return {};
             }
-            if (!decoded.try_append(b64decoded.value().data(), b64decoded.value().size())) {
+            if (decoded.try_append(b64decoded.value().data(), b64decoded.value().size()).is_error()) {
                 dbgln(""Failed to decode PEM, likely OOM condition"");
                 return {};
             }
diff --git a/Userland/Libraries/LibCrypto/PK/Code/EMSA_PSS.h b/Userland/Libraries/LibCrypto/PK/Code/EMSA_PSS.h
index b1b1a569a932..3193c772d430 100644
--- a/Userland/Libraries/LibCrypto/PK/Code/EMSA_PSS.h
+++ b/Userland/Libraries/LibCrypto/PK/Code/EMSA_PSS.h
@@ -152,8 +152,8 @@ class EMSA_PSS : public Code<HashFunction> {
         for (size_t counter = 0; counter < length / HashFunction::DigestSize - 1; ++counter) {
             hash_fn.update(seed);
             hash_fn.update((u8*)&counter, 4);
-            if (!T.try_append(hash_fn.digest().data, HashFunction::DigestSize)) {
-                dbgln(""EMSA_PSS: MGF1 digest failed, not enough space"");
+            if (auto result = T.try_append(hash_fn.digest().data, HashFunction::DigestSize); result.is_error()) {
+                dbgln(""EMSA_PSS: MGF1 digest failed: {}"", result.error());
                 return;
             }
         }
diff --git a/Userland/Libraries/LibGfx/BMPWriter.cpp b/Userland/Libraries/LibGfx/BMPWriter.cpp
index 87377707a161..e52f9d07f03c 100644
--- a/Userland/Libraries/LibGfx/BMPWriter.cpp
+++ b/Userland/Libraries/LibGfx/BMPWriter.cpp
@@ -143,8 +143,8 @@ ByteBuffer BMPWriter::dump(const RefPtr<Bitmap> bitmap, DibHeader dib_header)
         }
     }
 
-    if (!buffer.try_append(pixel_data.data(), pixel_data.size()))
-        dbgln(""Failed to write {} bytes of pixel data to buffer"", pixel_data.size());
+    if (auto result = buffer.try_append(pixel_data.data(), pixel_data.size()); result.is_error())
+        dbgln(""Failed to write {} bytes of pixel data to buffer: {}"", pixel_data.size(), result.error());
     return buffer;
 }
 
diff --git a/Userland/Libraries/LibLine/Editor.cpp b/Userland/Libraries/LibLine/Editor.cpp
index c55c70e08eb0..1969aed99a0d 100644
--- a/Userland/Libraries/LibLine/Editor.cpp
+++ b/Userland/Libraries/LibLine/Editor.cpp
@@ -370,7 +370,7 @@ void Editor::insert(const u32 cp)
     StringBuilder builder;
     builder.append(Utf32View(&cp, 1));
     auto str = builder.build();
-    if (!m_pending_chars.try_append(str.characters(), str.length()))
+    if (m_pending_chars.try_append(str.characters(), str.length()).is_error())
         return;
 
     readjust_anchored_styles(m_cursor, ModificationKind::Insertion);
diff --git a/Userland/Libraries/LibPDF/Parser.cpp b/Userland/Libraries/LibPDF/Parser.cpp
index 1872c0e9b8e2..a591060c47ae 100644
--- a/Userland/Libraries/LibPDF/Parser.cpp
+++ b/Userland/Libraries/LibPDF/Parser.cpp
@@ -273,8 +273,8 @@ bool Parser::initialize_hint_tables()
         if (!buffer_result.has_value())
             return false;
         possible_merged_stream_buffer = buffer_result.release_value();
-        auto ok = possible_merged_stream_buffer.try_append(primary_hint_stream->bytes());
-        ok = ok && possible_merged_stream_buffer.try_append(overflow_hint_stream->bytes());
+        auto ok = !possible_merged_stream_buffer.try_append(primary_hint_stream->bytes()).is_error();
+        ok = ok && !possible_merged_stream_buffer.try_append(overflow_hint_stream->bytes()).is_error();
         if (!ok)
             return false;
         hint_stream_bytes = possible_merged_stream_buffer.bytes();
diff --git a/Userland/Libraries/LibSQL/Heap.cpp b/Userland/Libraries/LibSQL/Heap.cpp
index 7bf8bf9fd612..fb99fa5fa483 100644
--- a/Userland/Libraries/LibSQL/Heap.cpp
+++ b/Userland/Libraries/LibSQL/Heap.cpp
@@ -75,7 +75,7 @@ bool Heap::write_block(u32 block, ByteBuffer& buffer)
     VERIFY(buffer.size() <= BLOCKSIZE);
     auto sz = buffer.size();
     if (sz < BLOCKSIZE) {
-        if (!buffer.try_resize(BLOCKSIZE))
+        if (buffer.try_resize(BLOCKSIZE).is_error())
             return false;
         memset(buffer.offset_pointer((int)sz), 0, BLOCKSIZE - sz);
     }
diff --git a/Userland/Libraries/LibTLS/HandshakeClient.cpp b/Userland/Libraries/LibTLS/HandshakeClient.cpp
index 7299f3418a6f..8a4304eea298 100644
--- a/Userland/Libraries/LibTLS/HandshakeClient.cpp
+++ b/Userland/Libraries/LibTLS/HandshakeClient.cpp
@@ -119,7 +119,7 @@ bool TLSv12::compute_master_secret_from_pre_master_secret(size_t length)
         return false;
     }
 
-    if (!m_context.master_key.try_resize(length)) {
+    if (m_context.master_key.try_resize(length).is_error()) {
         dbgln(""Couldn't allocate enough space for the master key :("");
         return false;
     }
diff --git a/Userland/Libraries/LibTLS/Record.cpp b/Userland/Libraries/LibTLS/Record.cpp
index 0488dba08933..d654fd4f626a 100644
--- a/Userland/Libraries/LibTLS/Record.cpp
+++ b/Userland/Libraries/LibTLS/Record.cpp
@@ -56,8 +56,7 @@ void TLSv12::write_packet(ByteBuffer& packet)
     if (m_context.tls_buffer.size() + packet.size() > 16 * KiB)
         schedule_or_perform_flush(true);
 
-    auto ok = m_context.tls_buffer.try_append(packet.data(), packet.size());
-    if (!ok) {
+    if (m_context.tls_buffer.try_append(packet.data(), packet.size()).is_error()) {
         // Toooooo bad, drop the record on the ground.
         return;
     }
@@ -498,7 +497,7 @@ ssize_t TLSv12::handle_message(ReadonlyBytes buffer)
         } else {
             dbgln_if(TLS_DEBUG, ""application data message of size {}"", plain.size());
 
-            if (!m_context.application_buffer.try_append(plain.data(), plain.size())) {
+            if (m_context.application_buffer.try_append(plain.data(), plain.size()).is_error()) {
                 payload_res = (i8)Error::DecryptionFailed;
                 auto packet = build_alert(true, (u8)AlertDescription::DecryptionFailed);
                 write_packet(packet);
diff --git a/Userland/Libraries/LibTLS/TLSv12.cpp b/Userland/Libraries/LibTLS/TLSv12.cpp
index 8f31933d9c2c..bce3c2fd14fe 100644
--- a/Userland/Libraries/LibTLS/TLSv12.cpp
+++ b/Userland/Libraries/LibTLS/TLSv12.cpp
@@ -35,7 +35,7 @@ void TLSv12::consume(ReadonlyBytes record)
 
     dbgln_if(TLS_DEBUG, ""Consuming {} bytes"", record.size());
 
-    if (!m_context.message_buffer.try_append(record)) {
+    if (m_context.message_buffer.try_append(record).is_error()) {
         dbgln(""Not enough space in message buffer, dropping the record"");
         return;
     }
diff --git a/Userland/Libraries/LibWasm/AbstractMachine/AbstractMachine.h b/Userland/Libraries/LibWasm/AbstractMachine/AbstractMachine.h
index 5f127365f8a4..aeec26d1f6a8 100644
--- a/Userland/Libraries/LibWasm/AbstractMachine/AbstractMachine.h
+++ b/Userland/Libraries/LibWasm/AbstractMachine/AbstractMachine.h
@@ -349,7 +349,7 @@ class MemoryInstance {
                 return false;
         }
         auto previous_size = m_size;
-        if (!m_data.try_resize(new_size))
+        if (m_data.try_resize(new_size).is_error())
             return false;
         m_size = new_size;
         // The spec requires that we zero out everything on grow
diff --git a/Userland/Libraries/LibWasm/Parser/Parser.cpp b/Userland/Libraries/LibWasm/Parser/Parser.cpp
index c201265088cc..d2ae4d4561c5 100644
--- a/Userland/Libraries/LibWasm/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWasm/Parser/Parser.cpp
@@ -739,7 +739,7 @@ ParseResult<CustomSection> CustomSection::parse(InputStream& stream)
         return name.error();
 
     ByteBuffer data_buffer;
-    if (!data_buffer.try_resize(64))
+    if (data_buffer.try_resize(64).is_error())
         return ParseError::OutOfMemory;
 
     while (!stream.has_any_error() && !stream.unreliable_eof()) {
@@ -747,7 +747,7 @@ ParseResult<CustomSection> CustomSection::parse(InputStream& stream)
         auto size = stream.read({ buf, 16 });
         if (size == 0)
             break;
-        if (!data_buffer.try_append(buf, size))
+        if (data_buffer.try_append(buf, size).is_error())
             return with_eof_check(stream, ParseError::HugeAllocationRequested);
     }
 
diff --git a/Userland/Services/InspectorServer/InspectableProcess.cpp b/Userland/Services/InspectorServer/InspectableProcess.cpp
index 140d8a14277b..578945c31435 100644
--- a/Userland/Services/InspectorServer/InspectableProcess.cpp
+++ b/Userland/Services/InspectorServer/InspectableProcess.cpp
@@ -57,8 +57,8 @@ String InspectableProcess::wait_for_response()
         auto packet = m_socket->read(remaining_bytes);
         if (packet.size() == 0)
             break;
-        if (!data.try_append(packet.data(), packet.size())) {
-            dbgln(""Failed to append {} bytes to data buffer"", packet.size());
+        if (auto result = data.try_append(packet.data(), packet.size()); result.is_error()) {
+            dbgln(""Failed to append {} bytes to data buffer: {}"", packet.size(), result.error());
             break;
         }
         remaining_bytes -= packet.size();
diff --git a/Userland/Utilities/pro.cpp b/Userland/Utilities/pro.cpp
index 6bf653d1bc0d..28091cf683c5 100644
--- a/Userland/Utilities/pro.cpp
+++ b/Userland/Utilities/pro.cpp
@@ -122,7 +122,8 @@ class ConditionalOutputFileStream final : public OutputFileStream {
     {
         if (!m_condition()) {
         write_to_buffer:;
-            if (!m_buffer.try_append(bytes.data(), bytes.size()))
+            // FIXME: Propagate errors.
+            if (m_buffer.try_append(bytes.data(), bytes.size()).is_error())
                 return 0;
             return bytes.size();
         }
diff --git a/Userland/Utilities/test-crypto.cpp b/Userland/Utilities/test-crypto.cpp
index 1d94219d0076..456966439f65 100644
--- a/Userland/Utilities/test-crypto.cpp
+++ b/Userland/Utilities/test-crypto.cpp
@@ -165,9 +165,8 @@ static void tls(const char* message, size_t len)
             g_loop.quit(0);
         };
     }
-    auto ok = write.try_append(message, len);
-    ok = ok && write.try_append(""\r\n"", 2);
-    VERIFY(ok);
+    MUST(write.try_append(message, len));
+    MUST(write.try_append(""\r\n"", 2));
 }
 
 static void aes_cbc(const char* message, size_t len)
@@ -2039,7 +2038,7 @@ static void tls_test_client_hello()
             loop.quit(1);
         } else {
             //            print_buffer(data.value(), 16);
-            if (!contents.try_append(data.value().data(), data.value().size())) {
+            if (contents.try_append(data.value().data(), data.value().size()).is_error()) {
                 FAIL(Allocation failed);
                 loop.quit(1);
             }"
d38c4ac8b5438aefd97adba91c77748fb1565d68,2021-12-13 02:21:08,Jelle Raaijmakers,libgl: Add stubs for `glLightf` and `glLightfv`,False,Add stubs for `glLightf` and `glLightfv`,libgl,"diff --git a/Userland/Libraries/LibGL/GL/gl.h b/Userland/Libraries/LibGL/GL/gl.h
index 36646ae92a33..23f7e1bd9a58 100644
--- a/Userland/Libraries/LibGL/GL/gl.h
+++ b/Userland/Libraries/LibGL/GL/gl.h
@@ -429,6 +429,8 @@ GLAPI void glFogf(GLenum pname, GLfloat param);
 GLAPI void glFogi(GLenum pname, GLint param);
 GLAPI void glPixelStorei(GLenum pname, GLint param);
 GLAPI void glScissor(GLint x, GLint y, GLsizei width, GLsizei height);
+GLAPI void glLightf(GLenum light, GLenum pname, GLfloat param);
+GLAPI void glLightfv(GLenum light, GLenum pname, GLfloat* param);
 
 #ifdef __cplusplus
 }
diff --git a/Userland/Libraries/LibGL/GLLights.cpp b/Userland/Libraries/LibGL/GLLights.cpp
index 24fb654cfb5a..6aa9c2ab0bae 100644
--- a/Userland/Libraries/LibGL/GLLights.cpp
+++ b/Userland/Libraries/LibGL/GLLights.cpp
@@ -6,9 +6,22 @@
 
 #include ""GL/gl.h""
 #include ""GLContext.h""
+#include <AK/Debug.h>
 
 extern GL::GLContext* g_gl_context;
 
+void glLightf(GLenum light, GLenum pname, GLfloat param)
+{
+    // FIXME: implement
+    dbgln_if(GL_DEBUG, ""glLightf({}, {}, {}): unimplemented"", light, pname, param);
+}
+
+void glLightfv(GLenum light, GLenum pname, GLfloat* param)
+{
+    // FIXME: implement
+    dbgln_if(GL_DEBUG, ""glLightfv({}, {}, {}): unimplemented"", light, pname, param);
+}
+
 void glShadeModel(GLenum mode)
 {
     g_gl_context->gl_shade_model(mode);"
c4f49e343ad3ca69f72190bd9ade49084c973822,2024-02-21 01:05:34,Aliaksandr Kalenik,libweb: Fix division by zero in `solve_replaced_size_constraint()`,False,Fix division by zero in `solve_replaced_size_constraint()`,libweb,"diff --git a/Tests/LibWeb/Layout/expected/zero-size-replaced-box-with-aspect-ratio.txt b/Tests/LibWeb/Layout/expected/zero-size-replaced-box-with-aspect-ratio.txt
new file mode 100644
index 000000000000..2908f2e0ea25
--- /dev/null
+++ b/Tests/LibWeb/Layout/expected/zero-size-replaced-box-with-aspect-ratio.txt
@@ -0,0 +1,13 @@
+Viewport <#document> at (0,0) content-size 800x600 children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x16 [BFC] children: not-inline
+    BlockContainer <body> at (8,8) content-size 784x0 children: not-inline
+      BlockContainer <div> at (8,8) content-size 0x0 children: inline
+        frag 0 from SVGSVGBox start: 0, length: 0, rect: [8,8 100x100] baseline: 100
+        SVGSVGBox <svg> at (8,8) content-size 100x100 [SVG] children: not-inline
+        TextNode <#text>
+
+ViewportPaintable (Viewport<#document>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x16] overflow: [0,0 800x108]
+    PaintableWithLines (BlockContainer<BODY>) [8,8 784x0] overflow: [8,8 100x100]
+      PaintableWithLines (BlockContainer<DIV>) [8,8 0x0] overflow: [8,8 100x100]
+        SVGSVGPaintable (SVGSVGBox<svg>) [8,8 100x100]
diff --git a/Tests/LibWeb/Layout/input/zero-size-replaced-box-with-aspect-ratio.html b/Tests/LibWeb/Layout/input/zero-size-replaced-box-with-aspect-ratio.html
new file mode 100644
index 000000000000..7a308b1d9f5f
--- /dev/null
+++ b/Tests/LibWeb/Layout/input/zero-size-replaced-box-with-aspect-ratio.html
@@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<style>
+svg {
+    aspect-ratio: 1 / 1;
+    min-width: 100px;
+    min-height: 100px;
+}
+</style><div style=""width: 0px; height: 0px""><svg xmlns=""http://www.w3.org/2000/svg""></svg>
diff --git a/Userland/Libraries/LibWeb/Layout/FormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/FormattingContext.cpp
index dc9112ad4dfb..4e8eccf0dde6 100644
--- a/Userland/Libraries/LibWeb/Layout/FormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/FormattingContext.cpp
@@ -283,14 +283,16 @@ CSSPixelSize FormattingContext::solve_replaced_size_constraint(CSSPixels input_w
     if (input_width > max_width && input_height < min_height)
         return { max_width, min_height };
 
-    if (input_width > max_width && input_height > max_height && max_width / input_width <= max_height / input_height)
-        return { max_width, max(min_height, max_width / aspect_ratio) };
-    if (input_width > max_width && input_height > max_height && max_width / input_width > max_height / input_height)
-        return { max(min_width, max_height * aspect_ratio), max_height };
-    if (input_width < min_width && input_height < min_height && min_width / input_width <= min_height / input_height)
-        return { min(max_width, min_height * aspect_ratio), min_height };
-    if (input_width < min_width && input_height < min_height && min_width / input_width > min_height / input_height)
-        return { min_width, min(max_height, min_width / aspect_ratio) };
+    if (input_width > 0) {
+        if (input_width > max_width && input_height > max_height && max_width / input_width <= max_height / input_height)
+            return { max_width, max(min_height, max_width / aspect_ratio) };
+        if (input_width > max_width && input_height > max_height && max_width / input_width > max_height / input_height)
+            return { max(min_width, max_height * aspect_ratio), max_height };
+        if (input_width < min_width && input_height < min_height && min_width / input_width <= min_height / input_height)
+            return { min(max_width, min_height * aspect_ratio), min_height };
+        if (input_width < min_width && input_height < min_height && min_width / input_width > min_height / input_height)
+            return { min_width, min(max_height, min_width / aspect_ratio) };
+    }
 
     if (input_width > max_width)
         return { max_width, max(max_width / aspect_ratio, min_height) };"
98183ef572298e5541b1cdabc2021c1cd24f3373,2022-01-26 02:53:09,Ali Mohammad Pur,meta: Correct the PNP ID download condition,False,Correct the PNP ID download condition,meta,"diff --git a/Meta/CMake/pnp_ids.cmake b/Meta/CMake/pnp_ids.cmake
index 4ee371f8f2e1..8396006af52a 100644
--- a/Meta/CMake/pnp_ids.cmake
+++ b/Meta/CMake/pnp_ids.cmake
@@ -5,7 +5,7 @@ set(PNP_IDS_URL http://www.uefi.org/uefi-pnp-export)
 set(PNP_IDS_EXPORT_PATH ${CMAKE_BINARY_DIR}/pnp.ids.html)
 set(PNP_IDS_INSTALL_PATH ${CMAKE_INSTALL_DATAROOTDIR}/${PNP_IDS_FILE})
 
-if(ENABLE_PNP_IDS_DOWNLOAD AND NOT EXISTS ${PNP_IDS_PATH})
+if(ENABLE_PNP_IDS_DOWNLOAD AND NOT EXISTS ${PNP_IDS_EXPORT_PATH})
     message(STATUS ""Downloading PNP ID database from ${PNP_IDS_URL}..."")
     file(MAKE_DIRECTORY ${CMAKE_INSTALL_DATAROOTDIR})
     file(DOWNLOAD ${PNP_IDS_URL} ${PNP_IDS_EXPORT_PATH} INACTIVITY_TIMEOUT 10)"
d5aab4204ab52423829f5b1a9c937fc3aa8a2776,2024-04-19 01:14:53,Cubic Love,base: Add manpage for Screenshot,False,Add manpage for Screenshot,base,"diff --git a/Base/usr/share/man/man1/Applications/Screenshot.md b/Base/usr/share/man/man1/Applications/Screenshot.md
new file mode 100644
index 000000000000..6a5f5ac741ab
--- /dev/null
+++ b/Base/usr/share/man/man1/Applications/Screenshot.md
@@ -0,0 +1,28 @@
+## Name
+
+![Icon](/res/icons/16x16/app-screenshot.png) Screenshot
+
+[Open](file:///bin/Screenshot)
+
+## Synopsis
+
+```**sh
+$ Screenshot
+```
+
+## Description
+
+`Screenshot` is an application for taking screenshots.
+
+Its interface remains invisible in screenshots, ensuring a clean capture.
+
+## Options
+
+* **Whole desktop** - Capture the entire user interface, including the cursor if it's visible on the desktop.
+* **Selected area** - Click and drag to select a specific area. Release the mouse button to take a screenshot. The cursor will not be included.
+* **Edit in Pixel Paint** - Open the screenshot as a new image in [Pixel Paint](help://man/1/Applications/PixelPaint) for quick annotations.
+* **Select Folder** - Customize the destination folder for saving screenshots. By default, they are saved in the *Pictures* folder.
+
+## See Also
+
+* [`shot`(1)](help://man/1/shot) Command line screenshot tool with more options"
47dd1b9f8b4c901ebb0f0448383632507c8c4e8f,2022-11-30 16:13:13,Timothy Flynn,libsql: Don't copy strings when searching for a column's index,False,Don't copy strings when searching for a column's index,libsql,"diff --git a/Userland/Libraries/LibSQL/Tuple.cpp b/Userland/Libraries/LibSQL/Tuple.cpp
index 04fa97813f2c..c0dc6cc9e4c7 100644
--- a/Userland/Libraries/LibSQL/Tuple.cpp
+++ b/Userland/Libraries/LibSQL/Tuple.cpp
@@ -79,13 +79,12 @@ Tuple& Tuple::operator=(Tuple const& other)
     return *this;
 }
 
-Optional<size_t> Tuple::index_of(String name) const
+Optional<size_t> Tuple::index_of(StringView name) const
 {
-    auto n = move(name);
     for (auto ix = 0u; ix < m_descriptor->size(); ix++) {
         auto& part = (*m_descriptor)[ix];
-        if (part.name == n) {
-            return (int)ix;
+        if (part.name == name) {
+            return ix;
         }
     }
     return {};
diff --git a/Userland/Libraries/LibSQL/Tuple.h b/Userland/Libraries/LibSQL/Tuple.h
index 0488128097e8..297510f7a569 100644
--- a/Userland/Libraries/LibSQL/Tuple.h
+++ b/Userland/Libraries/LibSQL/Tuple.h
@@ -70,7 +70,7 @@ class Tuple {
     [[nodiscard]] u32 hash() const;
 
 protected:
-    [[nodiscard]] Optional<size_t> index_of(String) const;
+    [[nodiscard]] Optional<size_t> index_of(StringView) const;
     void copy_from(Tuple const&);
     virtual void serialize(Serializer&) const;
     virtual void deserialize(Serializer&);"
02c9f4c951d1a46330b4da6c276f6d95b978e090,2020-04-11 03:03:02,4ourbit,libjs: Improve Object.defineProperty test,False,Improve Object.defineProperty test,libjs,"diff --git a/Libraries/LibJS/Tests/Object.defineProperty.js b/Libraries/LibJS/Tests/Object.defineProperty.js
index 0208d607b4ef..f27a2332be9a 100644
--- a/Libraries/LibJS/Tests/Object.defineProperty.js
+++ b/Libraries/LibJS/Tests/Object.defineProperty.js
@@ -26,6 +26,7 @@ try {
 
     try {
         Object.defineProperty(o, ""bar"", { value: ""xx"", enumerable: false });
+        assert(false);
     } catch (e) {
         assert(e.name === ""TypeError"");
     }"
7a8104e79b9c8b4bb63d9ad8386ed73125ca07a5,2022-07-19 15:19:38,Lucas CHOLLET,libgui: Add MoveLineUpOrDownCommand,False,Add MoveLineUpOrDownCommand,libgui,"diff --git a/Userland/Libraries/LibGUI/EditingEngine.cpp b/Userland/Libraries/LibGUI/EditingEngine.cpp
index 5f2d6cfc0d92..028a7bb24e82 100644
--- a/Userland/Libraries/LibGUI/EditingEngine.cpp
+++ b/Userland/Libraries/LibGUI/EditingEngine.cpp
@@ -259,8 +259,11 @@ EditingEngine::DidMoveALine EditingEngine::move_one_up(KeyEvent const& event)
 {
     if (m_editor->cursor().line() > 0 || m_editor->is_wrapping_enabled()) {
         if (event.ctrl() && event.shift()) {
-            move_selected_lines_up();
-            return DidMoveALine::Yes;
+            if (MoveLineUpOrDownCommand::valid_operation(*this, VerticalDirection::Up)) {
+                m_editor->execute<MoveLineUpOrDownCommand>(Badge<EditingEngine> {}, event, *this);
+                return DidMoveALine::Yes;
+            }
+            return DidMoveALine::No;
         }
         TextPosition new_cursor;
         if (m_editor->is_wrapping_enabled()) {
@@ -280,8 +283,11 @@ EditingEngine::DidMoveALine EditingEngine::move_one_down(KeyEvent const& event)
 {
     if (m_editor->cursor().line() < (m_editor->line_count() - 1) || m_editor->is_wrapping_enabled()) {
         if (event.ctrl() && event.shift()) {
-            move_selected_lines_down();
-            return DidMoveALine::Yes;
+            if (MoveLineUpOrDownCommand::valid_operation(*this, VerticalDirection::Down)) {
+                m_editor->execute<MoveLineUpOrDownCommand>(Badge<EditingEngine> {}, event, *this);
+                return DidMoveALine::Yes;
+            }
+            return DidMoveALine::No;
         }
         TextPosition new_cursor;
         if (m_editor->is_wrapping_enabled()) {
@@ -353,6 +359,11 @@ void EditingEngine::move_to_last_line()
     m_editor->set_cursor(m_editor->line_count() - 1, m_editor->lines()[m_editor->line_count() - 1].length());
 };
 
+void EditingEngine::get_selection_line_boundaries(Badge<MoveLineUpOrDownCommand>, size_t& first_line, size_t& last_line)
+{
+    get_selection_line_boundaries(first_line, last_line);
+}
+
 void EditingEngine::get_selection_line_boundaries(size_t& first_line, size_t& last_line)
 {
     auto selection = m_editor->normalized_selection();
@@ -367,67 +378,119 @@ void EditingEngine::get_selection_line_boundaries(size_t& first_line, size_t& la
         last_line -= 1;
 }
 
-void EditingEngine::move_selected_lines_up()
+void EditingEngine::delete_char()
 {
     if (!m_editor->is_editable())
         return;
-    size_t first_line;
-    size_t last_line;
-    get_selection_line_boundaries(first_line, last_line);
+    m_editor->do_delete();
+};
 
-    if (first_line == 0)
+void EditingEngine::delete_line()
+{
+    if (!m_editor->is_editable())
         return;
+    m_editor->delete_current_line();
+};
 
-    auto& lines = m_editor->document().lines();
-    lines.insert((int)last_line, lines.take((int)first_line - 1));
-    m_editor->set_cursor({ m_editor->cursor().line() - 1, m_editor->cursor().column() });
+MoveLineUpOrDownCommand::MoveLineUpOrDownCommand(TextDocument& document, KeyEvent event, EditingEngine& engine)
+    : TextDocumentUndoCommand(document)
+    , m_event(move(event))
+    , m_direction(key_code_to_vertical_direction(m_event.key()))
+    , m_engine(engine)
+    , m_selection(m_engine.editor().selection())
+    , m_cursor(m_engine.editor().cursor())
+{
+}
 
-    if (m_editor->has_selection()) {
-        m_editor->selection().start().set_line(m_editor->selection().start().line() - 1);
-        m_editor->selection().end().set_line(m_editor->selection().end().line() - 1);
-    }
+void MoveLineUpOrDownCommand::redo()
+{
+    move_lines(m_direction);
+}
 
-    m_editor->did_change();
-    m_editor->update();
+void MoveLineUpOrDownCommand::undo()
+{
+    move_lines(!m_direction);
 }
 
-void EditingEngine::move_selected_lines_down()
+bool MoveLineUpOrDownCommand::merge_with(GUI::Command const&)
 {
-    if (!m_editor->is_editable())
-        return;
-    size_t first_line;
-    size_t last_line;
-    get_selection_line_boundaries(first_line, last_line);
+    return false;
+}
 
-    auto& lines = m_editor->document().lines();
-    VERIFY(lines.size() != 0);
-    if (last_line >= lines.size() - 1)
-        return;
+String MoveLineUpOrDownCommand::action_text() const
+{
+    return ""Move a line"";
+}
+
+bool MoveLineUpOrDownCommand::valid_operation(EditingEngine& engine, VerticalDirection direction)
+{
 
-    lines.insert((int)first_line, lines.take((int)last_line + 1));
-    m_editor->set_cursor({ m_editor->cursor().line() + 1, m_editor->cursor().column() });
+    VERIFY(engine.editor().line_count() != 0);
 
-    if (m_editor->has_selection()) {
-        m_editor->selection().start().set_line(m_editor->selection().start().line() + 1);
-        m_editor->selection().end().set_line(m_editor->selection().end().line() + 1);
-    }
+    auto const& selection = engine.editor().selection().normalized();
+    if (selection.is_valid()) {
+        if ((direction == VerticalDirection::Up && selection.start().line() == 0) || (direction == VerticalDirection::Down && selection.end().line() >= engine.editor().line_count() - 1))
+            return false;
+    } else {
+        size_t first_line;
+        size_t last_line;
+        engine.get_selection_line_boundaries(Badge<MoveLineUpOrDownCommand> {}, first_line, last_line);
 
-    m_editor->did_change();
-    m_editor->update();
+        if ((direction == VerticalDirection::Up && first_line == 0) || (direction == VerticalDirection::Down && last_line >= engine.editor().line_count() - 1))
+            return false;
+    }
+    return true;
 }
 
-void EditingEngine::delete_char()
+TextRange MoveLineUpOrDownCommand::retrieve_selection(VerticalDirection direction)
 {
-    if (!m_editor->is_editable())
-        return;
-    m_editor->do_delete();
-};
+    if (direction == m_direction)
+        return m_selection;
 
-void EditingEngine::delete_line()
+    auto const offset_selection = [this](auto const offset) {
+        auto tmp = m_selection;
+        tmp.start().set_line(tmp.start().line() + offset);
+        tmp.end().set_line(tmp.end().line() + offset);
+
+        return tmp;
+    };
+
+    if (direction == VerticalDirection::Up)
+        return offset_selection(1);
+    if (direction == VerticalDirection::Down)
+        return offset_selection(-1);
+    VERIFY_NOT_REACHED();
+}
+
+void MoveLineUpOrDownCommand::move_lines(VerticalDirection direction)
 {
-    if (!m_editor->is_editable())
+    if (m_event.shift() && m_selection.is_valid()) {
+        m_engine.editor().set_selection(retrieve_selection(direction));
+        m_engine.editor().did_update_selection();
+    }
+
+    if (!m_engine.editor().is_editable())
         return;
-    m_editor->delete_current_line();
-};
+
+    size_t first_line;
+    size_t last_line;
+    m_engine.get_selection_line_boundaries(Badge<MoveLineUpOrDownCommand> {}, first_line, last_line);
+
+    auto const offset = direction == VerticalDirection::Up ? -1 : 1;
+    auto const insertion_index = direction == VerticalDirection::Up ? last_line : first_line;
+    auto const moved_line_index = offset + (direction != VerticalDirection::Up ? last_line : first_line);
+
+    auto moved_line = m_document.take_line(moved_line_index);
+    m_document.insert_line(insertion_index, move(moved_line));
+
+    m_engine.editor().set_cursor({ m_engine.editor().cursor().line() + offset, m_engine.editor().cursor().column() });
+    if (m_engine.editor().has_selection()) {
+        m_engine.editor().selection().start().set_line(m_engine.editor().selection().start().line() + offset);
+        m_engine.editor().selection().end().set_line(m_engine.editor().selection().end().line() + offset);
+    }
+
+    m_engine.editor().did_change();
+    m_engine.editor().update();
+}
 
 }
diff --git a/Userland/Libraries/LibGUI/EditingEngine.h b/Userland/Libraries/LibGUI/EditingEngine.h
index 13c71a3dca4c..d6dacb1205dd 100644
--- a/Userland/Libraries/LibGUI/EditingEngine.h
+++ b/Userland/Libraries/LibGUI/EditingEngine.h
@@ -22,6 +22,8 @@ enum EngineType {
     Vim,
 };
 
+class MoveLineUpOrDownCommand;
+
 class EditingEngine {
     AK_MAKE_NONCOPYABLE(EditingEngine);
     AK_MAKE_NONMOVABLE(EditingEngine);
@@ -45,6 +47,8 @@ class EditingEngine {
     bool is_regular() const { return engine_type() == EngineType::Regular; }
     bool is_vim() const { return engine_type() == EngineType::Vim; }
 
+    void get_selection_line_boundaries(Badge<MoveLineUpOrDownCommand>, size_t& first_line, size_t& last_line);
+
 protected:
     EditingEngine() = default;
 
@@ -80,10 +84,27 @@ class EditingEngine {
     void delete_char();
 
     virtual EngineType engine_type() const = 0;
+};
+
+class MoveLineUpOrDownCommand : public TextDocumentUndoCommand {
+public:
+    MoveLineUpOrDownCommand(TextDocument&, KeyEvent event, EditingEngine&);
+    virtual void undo() override;
+    virtual void redo() override;
+    bool merge_with(GUI::Command const&) override;
+    String action_text() const override;
+
+    static bool valid_operation(EditingEngine& engine, VerticalDirection direction);
 
 private:
-    void move_selected_lines_up();
-    void move_selected_lines_down();
+    void move_lines(VerticalDirection);
+    TextRange retrieve_selection(VerticalDirection);
+
+    KeyEvent m_event;
+    VerticalDirection m_direction;
+    EditingEngine& m_engine;
+    TextRange m_selection;
+    TextPosition m_cursor;
 };
 
 }
diff --git a/Userland/Libraries/LibGUI/TextEditor.h b/Userland/Libraries/LibGUI/TextEditor.h
index b5b8dd374f75..547ac759a39e 100644
--- a/Userland/Libraries/LibGUI/TextEditor.h
+++ b/Userland/Libraries/LibGUI/TextEditor.h
@@ -229,6 +229,12 @@ class TextEditor
 
     virtual Optional<UISize> calculated_min_size() const override;
 
+    template<class T, class... Args>
+    inline void execute(Badge<EditingEngine>, Args&&... args)
+    {
+        execute<T>(forward<Args>(args)...);
+    }
+
 protected:
     explicit TextEditor(Type = Type::MultiLine);"
4aff4249aa570fe33b7520d6977391f3de4944fc,2021-06-15 19:45:09,Mateusz Górzyński,pixelpaint: Alternate selection outline between black and white,False,Alternate selection outline between black and white,pixelpaint,"diff --git a/Userland/Applications/PixelPaint/Selection.cpp b/Userland/Applications/PixelPaint/Selection.cpp
index 5d64a0c7093c..4316f960f9b8 100644
--- a/Userland/Applications/PixelPaint/Selection.cpp
+++ b/Userland/Applications/PixelPaint/Selection.cpp
@@ -22,7 +22,7 @@ Selection::Selection(ImageEditor& editor)
 {
     m_marching_ants_timer = Core::Timer::create_repeating(80, [this] {
         ++m_marching_ants_offset;
-        m_marching_ants_offset %= marching_ant_length;
+        m_marching_ants_offset %= (marching_ant_length * 2);
         if (!is_empty() || m_in_interactive_selection)
             m_editor.update();
     });
@@ -34,8 +34,11 @@ void Selection::draw_marching_ants(Gfx::Painter& painter, Gfx::IntRect const& re
     int offset = m_marching_ants_offset;
 
     auto draw_pixel = [&](int x, int y) {
-        if ((offset % marching_ant_length) != 0)
+        if ((offset % (marching_ant_length * 2)) < marching_ant_length) {
             painter.set_pixel(x, y, Color::Black);
+        } else {
+            painter.set_pixel(x, y, Color::White);
+        }
         offset++;
     };"
4107ae1dea5eb4f639df26d620d7479fe177adb5,2023-04-09 16:09:31,Ben Wiederhake,ports: Remove abandoned port 'fheroes2' which was never playable,False,Remove abandoned port 'fheroes2' which was never playable,ports,"diff --git a/Ports/AvailablePorts.md b/Ports/AvailablePorts.md
index 059e35bd406e..b82f1b15e1f2 100644
--- a/Ports/AvailablePorts.md
+++ b/Ports/AvailablePorts.md
@@ -61,7 +61,6 @@ This list is also available at [ports.serenityos.net](https://ports.serenityos.n
 | [`epsilon`](epsilon/)                               | graphical calculator simulator                                  | 15.5.0                   | https://github.com/numworks/epsilon                                            |
 | [`expat`](expat/)                                   | Expat XML parser                                                | 2.5.0                    | https://libexpat.github.io/                                                    |
 | [`ffmpeg`](ffmpeg/)                                 | ffmpeg                                                          | 5.0                      | https://ffmpeg.org                                                             |
-| [`fheroes2`](fheroes2/)                             | Free Heroes of Might and Magic II                               | 0.9.13                   | https://github.com/ihhub/fheroes2                                              |
 | [`figlet`](figlet/)                                 | FIGlet                                                          | 2.2.5                    | http://www.figlet.org/                                                         |
 | [`file`](file/)                                     | file (determine file type)                                      | 5.44                     | https://www.darwinsys.com/file/                                                |
 | [`findutils`](findutils/)                           | GNU findutils                                                   | 4.9.0                    | https://www.gnu.org/software/findutils/                                        |
diff --git a/Ports/fheroes2/package.sh b/Ports/fheroes2/package.sh
deleted file mode 100755
index 147b145954c2..000000000000
--- a/Ports/fheroes2/package.sh
+++ /dev/null
@@ -1,30 +0,0 @@
-#!/usr/bin/env -S bash ../.port_include.sh
-port=fheroes2
-useconfigure=true
-version=0.9.13
-depends=(""SDL2"" ""SDL2_image"" ""SDL2_mixer"" ""libpng"" ""zlib"")
-configopts=(""-DCMAKE_TOOLCHAIN_FILE=${SERENITY_BUILD_DIR}/CMakeToolchain.txt"" ""-DUSE_SDL_VERSION=SDL2"" ""-DENABLE_IMAGE=ON"" ""-DGET_HOMM2_DEMO=ON"")
-files=""https://github.com/ihhub/fheroes2/archive/refs/tags/${version}.zip fheroes2-${version}.zip 879805bc88c3561d0eedc3dda425e8d9a3c7ae8a80b9f6909797acc72598cc17""
-auth_type=sha256
-launcher_name=""Free Heroes of Might and Magic II""
-launcher_category=Games
-launcher_command=/opt/fheroes2/fheroes2
-icon_file=src/resources/fheroes2.ico
-
-pre_configure() {
-    export CXXFLAGS=""'-D_GNU_SOURCE'""
-}
-
-configure() {
-    run cmake ""${configopts[@]}"" .
-}
-
-post_configure() {
-    unset CXXFLAGS
-}
-
-install() {
-    mkdir -p ""${SERENITY_INSTALL_ROOT}/opt/fheroes2/files""
-    run cp -r data/ maps/ fheroes2 fheroes2.key ""${SERENITY_INSTALL_ROOT}/opt/fheroes2""
-    run cp -r files/data ""${SERENITY_INSTALL_ROOT}/opt/fheroes2/files""
-}
diff --git a/Ports/fheroes2/patches/0001-Include-endian.h-on-serenity-as-well.patch b/Ports/fheroes2/patches/0001-Include-endian.h-on-serenity-as-well.patch
deleted file mode 100644
index 18326ee2016d..000000000000
--- a/Ports/fheroes2/patches/0001-Include-endian.h-on-serenity-as-well.patch
+++ /dev/null
@@ -1,22 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Michael Manganiello <adamantike@users.noreply.github.com>
-Date: Sun, 27 Mar 2022 12:52:11 -0300
-Subject: [PATCH] Include <endian.h> on serenity as well
-
----
- src/engine/endian_h2.h | 2 +-
- 1 file changed, 1 insertion(+), 1 deletion(-)
-
-diff --git a/src/engine/endian_h2.h b/src/engine/endian_h2.h
-index 7d1fa27..9144a91 100644
---- a/src/engine/endian_h2.h
-+++ b/src/engine/endian_h2.h
-@@ -21,7 +21,7 @@
- #ifndef ENDIAN_H2_H
- #define ENDIAN_H2_H
- 
--#if defined( __linux__ )
-+#if defined( __linux__ ) || defined( __serenity__ )
- #include <endian.h>
- 
- #elif defined( __FreeBSD__ ) || defined( __OpenBSD__ )
diff --git a/Ports/fheroes2/patches/0002-Use-pkg-config-for-SDL_-and-SDL2.patch b/Ports/fheroes2/patches/0002-Use-pkg-config-for-SDL_-and-SDL2.patch
deleted file mode 100644
index 0915ed622126..000000000000
--- a/Ports/fheroes2/patches/0002-Use-pkg-config-for-SDL_-and-SDL2.patch
+++ /dev/null
@@ -1,65 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Michael Manganiello <adamantike@users.noreply.github.com>
-Date: Sun, 27 Mar 2022 12:52:11 -0300
-Subject: [PATCH] Use pkg-config for SDL_* and SDL2
-
----
- CMakeLists.txt            |  9 ++++++---
- src/engine/CMakeLists.txt | 12 +++++++-----
- 2 files changed, 13 insertions(+), 8 deletions(-)
-
-diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 8728264..ebed16e 100644
---- a/CMakeLists.txt
-+++ b/CMakeLists.txt
-@@ -26,13 +26,16 @@ option(FHEROES2_STRICT_COMPILATION ""Enable -Werror strict compilation"" OFF)
- #
- # Library & feature detection
- #
--find_package(${USE_SDL_VERSION} REQUIRED)
--find_package(${USE_SDL_VERSION}_mixer REQUIRED)
-+INCLUDE(FindPkgConfig)
-+
-+PKG_SEARCH_MODULE(${USE_SDL_VERSION} REQUIRED sdl2)
-+PKG_SEARCH_MODULE(${USE_SDL_VERSION}MIXER REQUIRED SDL2_mixer)
-+
- find_package(ZLIB REQUIRED)
- find_package(Threads)
- 
- if(ENABLE_IMAGE)
--	find_package(${USE_SDL_VERSION}_image REQUIRED)
-+	PKG_SEARCH_MODULE(${USE_SDL_VERSION}IMAGE REQUIRED SDL2_image)
- 	find_package(PNG REQUIRED)
- endif(ENABLE_IMAGE)
- 
-diff --git a/src/engine/CMakeLists.txt b/src/engine/CMakeLists.txt
-index 8a1fbeb..b9df312 100644
---- a/src/engine/CMakeLists.txt
-+++ b/src/engine/CMakeLists.txt
-@@ -5,19 +5,21 @@ target_compile_definitions(engine PRIVATE
- 	$<$<BOOL:${ENABLE_IMAGE}>:FHEROES2_IMAGE_SUPPORT>
- 	)
- target_include_directories(engine PUBLIC
--	$<$<BOOL:${ENABLE_IMAGE}>:${${USE_SDL_VERSION}_IMAGE_INCLUDE_DIR}>
--	${${USE_SDL_VERSION}_MIXER_INCLUDE_DIR}
--	${${USE_SDL_VERSION}_INCLUDE_DIR}
-+	$<$<BOOL:${ENABLE_IMAGE}>:${${USE_SDL_VERSION}_IMAGE_INCLUDE_DIRS}>
-+	${${USE_SDL_VERSION}_MIXER_INCLUDE_DIRS}
-+	${${USE_SDL_VERSION}_INCLUDE_DIRS}
- 	$<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}>
- 	$<INSTALL_INTERFACE:include>
- 	)
- target_link_libraries(engine
- 	smacker
--	${${USE_SDL_VERSION}MAIN_LIBRARY}
--	${${USE_SDL_VERSION}_LIBRARY}
-+	${${USE_SDL_VERSION}MAIN_LIBRARIES}
-+	${${USE_SDL_VERSION}_LIBRARIES}
- 	${${USE_SDL_VERSION}_MIXER_LIBRARIES}
- 	$<$<BOOL:${ENABLE_IMAGE}>:${${USE_SDL_VERSION}_IMAGE_LIBRARIES}>
- 	$<$<BOOL:${ENABLE_IMAGE}>:PNG::PNG>
-+	$<$<BOOL:${ENABLE_IMAGE}>:-lSDL2_image>
-+	-lSDL2_mixer
- 	Threads::Threads # To match the build settings of the main app
- 	ZLIB::ZLIB
- 	)
diff --git a/Ports/fheroes2/patches/0003-Disable-SDL-s-accelerated-rendering.patch b/Ports/fheroes2/patches/0003-Disable-SDL-s-accelerated-rendering.patch
deleted file mode 100644
index 017f43348512..000000000000
--- a/Ports/fheroes2/patches/0003-Disable-SDL-s-accelerated-rendering.patch
+++ /dev/null
@@ -1,26 +0,0 @@
-From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
-From: Michael Manganiello <adamantike@users.noreply.github.com>
-Date: Sun, 27 Mar 2022 12:52:11 -0300
-Subject: [PATCH] Disable SDL's accelerated rendering
-
----
- src/engine/screen.cpp | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/src/engine/screen.cpp b/src/engine/screen.cpp
-index 9cd9ccb..f4fe315 100644
---- a/src/engine/screen.cpp
-+++ b/src/engine/screen.cpp
-@@ -1005,10 +1005,10 @@ namespace
-         int renderFlags() const
-         {
-             if ( _isVSyncEnabled ) {
--                return ( SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC );
-+                return ( SDL_RENDERER_SOFTWARE | SDL_RENDERER_PRESENTVSYNC );
-             }
- 
--            return SDL_RENDERER_ACCELERATED;
-+            return SDL_RENDERER_SOFTWARE;
-         }
- 
-         void _createPalette()
diff --git a/Ports/fheroes2/patches/ReadMe.md b/Ports/fheroes2/patches/ReadMe.md
deleted file mode 100644
index f40b266b8dfe..000000000000
--- a/Ports/fheroes2/patches/ReadMe.md
+++ /dev/null
@@ -1,17 +0,0 @@
-# Patches for fheroes2 on SerenityOS
-
-## `0001-Include-endian.h-on-serenity-as-well.patch`
-
-Include <endian.h> on serenity as well
-
-
-## `0002-Use-pkg-config-for-SDL_-and-SDL2.patch`
-
-Use pkg-config for SDL_* and SDL2
-
-
-## `0003-Disable-SDL-s-accelerated-rendering.patch`
-
-Disable SDL's accelerated rendering
-
-"
8e00fba71d4a924c65113c24d07e95fa38ae7919,2024-05-15 03:31:18,MacDue,libweb: Correct naming in `SVGPathPaintable`,False,Correct naming in `SVGPathPaintable`,libweb,"diff --git a/Userland/Libraries/LibWeb/Painting/SVGPathPaintable.cpp b/Userland/Libraries/LibWeb/Painting/SVGPathPaintable.cpp
index cffb7561fde0..12a61c9e6a10 100644
--- a/Userland/Libraries/LibWeb/Painting/SVGPathPaintable.cpp
+++ b/Userland/Libraries/LibWeb/Painting/SVGPathPaintable.cpp
@@ -60,7 +60,7 @@ void SVGPathPaintable::paint(PaintContext& context, PaintPhase phase) const
     if (phase != PaintPhase::Foreground)
         return;
 
-    auto& geometry_element = layout_box().dom_node();
+    auto& graphics_element = layout_box().dom_node();
 
     auto const* svg_node = layout_box().first_ancestor_of_type<Layout::SVGSVGBox>();
     auto svg_element_rect = svg_node->paintable_box()->absolute_rect();
@@ -114,9 +114,9 @@ void SVGPathPaintable::paint(PaintContext& context, PaintPhase phase) const
         .transform = paint_transform
     };
 
-    auto fill_opacity = geometry_element.fill_opacity().value_or(1);
-    auto winding_rule = to_gfx_winding_rule(geometry_element.fill_rule().value_or(SVG::FillRule::Nonzero));
-    if (auto paint_style = geometry_element.fill_paint_style(paint_context); paint_style.has_value()) {
+    auto fill_opacity = graphics_element.fill_opacity().value_or(1);
+    auto winding_rule = to_gfx_winding_rule(graphics_element.fill_rule().value_or(SVG::FillRule::Nonzero));
+    if (auto paint_style = graphics_element.fill_paint_style(paint_context); paint_style.has_value()) {
         context.recording_painter().fill_path({
             .path = closed_path(),
             .paint_style = *paint_style,
@@ -124,7 +124,7 @@ void SVGPathPaintable::paint(PaintContext& context, PaintPhase phase) const
             .opacity = fill_opacity,
             .translation = offset,
         });
-    } else if (auto fill_color = geometry_element.fill_color(); fill_color.has_value()) {
+    } else if (auto fill_color = graphics_element.fill_color(); fill_color.has_value()) {
         context.recording_painter().fill_path({
             .path = closed_path(),
             .color = fill_color->with_opacity(fill_opacity),
@@ -133,12 +133,12 @@ void SVGPathPaintable::paint(PaintContext& context, PaintPhase phase) const
         });
     }
 
-    auto stroke_opacity = geometry_element.stroke_opacity().value_or(1);
+    auto stroke_opacity = graphics_element.stroke_opacity().value_or(1);
 
     // Note: This is assuming .x_scale() == .y_scale() (which it does currently).
-    float stroke_thickness = geometry_element.stroke_width().value_or(1) * viewbox_scale;
+    float stroke_thickness = graphics_element.stroke_width().value_or(1) * viewbox_scale;
 
-    if (auto paint_style = geometry_element.stroke_paint_style(paint_context); paint_style.has_value()) {
+    if (auto paint_style = graphics_element.stroke_paint_style(paint_context); paint_style.has_value()) {
         context.recording_painter().stroke_path({
             .path = path,
             .paint_style = *paint_style,
@@ -146,7 +146,7 @@ void SVGPathPaintable::paint(PaintContext& context, PaintPhase phase) const
             .opacity = stroke_opacity,
             .translation = offset,
         });
-    } else if (auto stroke_color = geometry_element.stroke_color(); stroke_color.has_value()) {
+    } else if (auto stroke_color = graphics_element.stroke_color(); stroke_color.has_value()) {
         context.recording_painter().stroke_path({
             .path = path,
             .color = stroke_color->with_opacity(stroke_opacity),"
ac23b806a2460f8f7fdf054a05e7f3195ba40e83,2022-09-03 21:27:37,kleines Filmröllchen,libgfx: Make Color::set_alpha constexpr,False,Make Color::set_alpha constexpr,libgfx,"diff --git a/Userland/Libraries/LibGfx/Color.h b/Userland/Libraries/LibGfx/Color.h
index 7e4507107caa..536a0f7aece6 100644
--- a/Userland/Libraries/LibGfx/Color.h
+++ b/Userland/Libraries/LibGfx/Color.h
@@ -134,7 +134,7 @@ class Color {
     constexpr u8 blue() const { return m_value & 0xff; }
     constexpr u8 alpha() const { return (m_value >> 24) & 0xff; }
 
-    void set_alpha(u8 value)
+    constexpr void set_alpha(u8 value)
     {
         m_value &= 0x00ffffff;
         m_value |= value << 24;"
1c584e9d801632f28b43da490656a8123b549f50,2021-07-10 23:58:24,Ali Mohammad Pur,libregex: Correctly parse BRE bracket expressions,False,Correctly parse BRE bracket expressions,libregex,"diff --git a/Tests/LibRegex/RegexLibC.cpp b/Tests/LibRegex/RegexLibC.cpp
index e922e4525e7b..04794dbc08b5 100644
--- a/Tests/LibRegex/RegexLibC.cpp
+++ b/Tests/LibRegex/RegexLibC.cpp
@@ -1149,4 +1149,10 @@ TEST_CASE(bre_basic)
     EXPECT_EQ(regcomp(&regex, ""15{1,2}"", REG_NOSUB | REG_ICASE), REG_NOERR);
     EXPECT_EQ(regexec(&regex, ""15{1,2}"", 0, NULL, 0), REG_NOERR);
     regfree(&regex);
+
+    EXPECT_EQ(regcomp(&regex, ""1[56]"", REG_NOSUB | REG_ICASE), REG_NOERR);
+    EXPECT_EQ(regexec(&regex, ""15"", 0, NULL, 0), REG_NOERR);
+    EXPECT_EQ(regexec(&regex, ""16"", 0, NULL, 0), REG_NOERR);
+    EXPECT_EQ(regexec(&regex, ""17"", 0, NULL, 0), REG_NOMATCH);
+    regfree(&regex);
 }
diff --git a/Userland/Libraries/LibRegex/RegexParser.cpp b/Userland/Libraries/LibRegex/RegexParser.cpp
index d794721d9477..814759de4e82 100644
--- a/Userland/Libraries/LibRegex/RegexParser.cpp
+++ b/Userland/Libraries/LibRegex/RegexParser.cpp
@@ -481,12 +481,20 @@ bool PosixBasicParser::parse_one_char_or_collation_element(ByteCode& bytecode, s
 
     Vector<CompareTypeAndValuePair> values;
     size_t bracket_minimum_length = 0;
-    if (!AbstractPosixParser::parse_bracket_expression(values, bracket_minimum_length))
-        return false;
 
-    bytecode.insert_bytecode_compare_values(move(values));
-    match_length_minimum += bracket_minimum_length;
-    return !has_error();
+    if (match(TokenType::LeftBracket)) {
+        consume();
+        if (!AbstractPosixParser::parse_bracket_expression(values, bracket_minimum_length))
+            return false;
+
+        consume(TokenType::RightBracket, Error::MismatchingBracket);
+
+        bytecode.insert_bytecode_compare_values(move(values));
+        match_length_minimum += bracket_minimum_length;
+        return !has_error();
+    }
+
+    return set_error(Error::InvalidPattern);
 }
 
 // ============================="
a527f5576861f9b1f82069ca5a5fa87f3e133c2d,2023-09-13 01:44:39,Andrew Kaster,libweb: Create StructuredSerialize helpers for Bytes,False,Create StructuredSerialize helpers for Bytes,libweb,"diff --git a/Userland/Libraries/LibWeb/HTML/StructuredSerialize.cpp b/Userland/Libraries/LibWeb/HTML/StructuredSerialize.cpp
index 96bb3b60e0b4..0f8525492b69 100644
--- a/Userland/Libraries/LibWeb/HTML/StructuredSerialize.cpp
+++ b/Userland/Libraries/LibWeb/HTML/StructuredSerialize.cpp
@@ -206,14 +206,13 @@ class Serializer {
     SerializationMemory& m_memory; // JS value -> index
     SerializationRecord m_serialized;
 
-    WebIDL::ExceptionOr<void> serialize_string(Vector<u32>& vector, String const& string)
+    WebIDL::ExceptionOr<void> serialize_bytes(Vector<u32>& vector, ReadonlyBytes bytes)
     {
-        u64 const size = string.code_points().byte_length();
-        // Append size of the string to the serialized structure.
+        // Append size of the buffer to the serialized structure.
+        u64 const size = bytes.size();
         TRY_OR_THROW_OOM(m_vm, vector.try_append(bit_cast<u32*>(&size), 2));
-        // Append the bytes of the string to the serialized structure.
+        // Append the bytes of the buffer to the serialized structure.
         u64 byte_position = 0;
-        ReadonlyBytes const bytes = { string.code_points().bytes(), string.code_points().byte_length() };
         while (byte_position < size) {
             u32 combined_value = 0;
             for (u8 i = 0; i < 4; ++i) {
@@ -228,6 +227,11 @@ class Serializer {
         return {};
     }
 
+    WebIDL::ExceptionOr<void> serialize_string(Vector<u32>& vector, String const& string)
+    {
+        return serialize_bytes(vector, { string.code_points().bytes(), string.code_points().byte_length() });
+    }
+
     WebIDL::ExceptionOr<void> serialize_string(Vector<u32>& vector, JS::PrimitiveString const& primitive_string)
     {
         auto string = primitive_string.utf8_string();
@@ -344,25 +348,29 @@ class Deserializer {
     JS::MarkedVector<JS::Value> m_memory; // Index -> JS value
     Optional<FlyString> m_error;
 
-    static WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::PrimitiveString>> deserialize_string_primitive(JS::VM& vm, Vector<u32> const& vector, u32& position)
+    static WebIDL::ExceptionOr<ByteBuffer> deserialize_bytes(JS::VM& vm, Vector<u32> const& vector, u32& position)
     {
         u32 size_bits[2];
         size_bits[0] = vector[position++];
         size_bits[1] = vector[position++];
         u64 const size = *bit_cast<u64*>(&size_bits);
 
-        Vector<u8> bytes;
-        TRY_OR_THROW_OOM(vm, bytes.try_ensure_capacity(size));
+        auto bytes = TRY_OR_THROW_OOM(vm, ByteBuffer::create_uninitialized(size));
         u64 byte_position = 0;
         while (position < vector.size() && byte_position < size) {
             for (u8 i = 0; i < 4; ++i) {
-                bytes.append(vector[position] >> (i * 8) & 0xFF);
-                byte_position++;
+                bytes[byte_position++] = (vector[position] >> (i * 8) & 0xFF);
                 if (byte_position == size)
                     break;
             }
             position++;
         }
+        return bytes;
+    }
+
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::PrimitiveString>> deserialize_string_primitive(JS::VM& vm, Vector<u32> const& vector, u32& position)
+    {
+        auto bytes = TRY(deserialize_bytes(vm, vector, position));
 
         return TRY(Bindings::throw_dom_exception_if_needed(vm, [&vm, &bytes]() {
             return JS::PrimitiveString::create(vm, StringView { bytes });"
228276a383e9fb76ce94181e3add6679a9a073e4,2024-11-27 15:29:48,devgianlu,libweb: Implement ECDH.importKey,False,Implement ECDH.importKey,libweb,"diff --git a/Libraries/LibWeb/Crypto/CryptoAlgorithms.cpp b/Libraries/LibWeb/Crypto/CryptoAlgorithms.cpp
index 822f048b3780..d31a30f6d2d2 100644
--- a/Libraries/LibWeb/Crypto/CryptoAlgorithms.cpp
+++ b/Libraries/LibWeb/Crypto/CryptoAlgorithms.cpp
@@ -2740,6 +2740,427 @@ WebIDL::ExceptionOr<GC::Ref<JS::ArrayBuffer>> ECDH::derive_bits(AlgorithmParams
     auto slice = TRY_OR_THROW_OOM(realm.vm(), secret.slice(0, length / 8));
     return JS::ArrayBuffer::create(realm, move(slice));
 }
+
+// https://w3c.github.io/webcrypto/#ecdh-operations
+WebIDL::ExceptionOr<GC::Ref<CryptoKey>> ECDH::import_key(AlgorithmParams const& params, Bindings::KeyFormat key_format, CryptoKey::InternalKeyData key_data, bool extractable, Vector<Bindings::KeyUsage> const& usages)
+{
+    // NOTE: This is a parameter to the function
+    // 1. Let keyData be the key data to be imported.
+
+    auto const& normalized_algorithm = static_cast<EcKeyImportParams const&>(params);
+
+    GC::Ptr<CryptoKey> key = nullptr;
+
+    // 2. If format is ""spki"":
+    if (key_format == Bindings::KeyFormat::Spki) {
+        // 1. If usages is not empty then throw a SyntaxError.
+        if (!usages.is_empty())
+            return WebIDL::SyntaxError::create(m_realm, ""Usages must be empty""_string);
+
+        // 2. Let spki be the result of running the parse a subjectPublicKeyInfo algorithm over keyData.
+        // 3. If an error occurred while parsing, then throw a DataError.
+        auto spki = TRY(parse_a_subject_public_key_info(m_realm, key_data.get<ByteBuffer>()));
+
+        // 4. If the algorithm object identifier field of the algorithm AlgorithmIdentifier field of spki
+        //    is not equal to the id-ecPublicKey object identifier defined in [RFC5480], then throw a DataError.
+        if (spki.algorithm.identifier != ::Crypto::Certificate::ec_public_key_encryption_oid)
+            return WebIDL::DataError::create(m_realm, ""Invalid algorithm""_string);
+
+        // 5. If the parameters field of the algorithm AlgorithmIdentifier field of spki is absent, then throw a DataError.
+        if (!spki.algorithm.ec_parameters.has_value())
+            return WebIDL::DataError::create(m_realm, ""Invalid algorithm parameters""_string);
+
+        // 6. Let params be the parameters field of the algorithm AlgorithmIdentifier field of spki.
+        auto ec_params = spki.algorithm.ec_parameters;
+
+        // 7. If params is not an instance of the ECParameters ASN.1 type defined in [RFC5480] that specifies a namedCurve, then throw a DataError.
+        // 8. Let namedCurve be a string whose initial value is undefined.
+        String named_curve;
+
+        // 9. If params is equivalent to the secp256r1 object identifier defined in [RFC5480]:
+        if (ec_params == ::Crypto::Certificate::secp256r1_oid) {
+            // Set namedCurve to ""P-256"".
+            named_curve = ""P-256""_string;
+        }
+        // If params is equivalent to the secp384r1 object identifier defined in [RFC5480]:
+        else if (ec_params == ::Crypto::Certificate::secp384r1_oid) {
+            // Set namedCurve to ""P-384"".
+            named_curve = ""P-384""_string;
+        }
+        // If params is equivalent to the secp521r1 object identifier defined in [RFC5480]:
+        else if (ec_params == ::Crypto::Certificate::secp521r1_oid) {
+            // Set namedCurve to ""P-521"".
+            named_curve = ""P-521""_string;
+        }
+
+        // 10. If namedCurve is not undefined
+        if (!named_curve.is_empty()) {
+            // 1. Let publicKey be the Elliptic Curve public key identified by performing
+            //    the conversion steps defined in Section 2.3.4 of [SEC1] to the subjectPublicKey field of spki.
+            // The uncompressed point format MUST be supported.
+            // 2. If the implementation does not support the compressed point format and a compressed point is provided, throw a DataError.
+            if (spki.raw_key[0] != 0x04)
+                return WebIDL::DataError::create(m_realm, ""Unsupported key format""_string);
+
+            // 3. If a decode error occurs or an identity point is found, throw a DataError.
+            size_t coord_size;
+            if (named_curve == ""P-256""sv)
+                coord_size = 32;
+            else if (named_curve == ""P-384""sv)
+                coord_size = 48;
+            else if (named_curve == ""P-521""sv)
+                coord_size = 66;
+            else
+                VERIFY_NOT_REACHED();
+
+            // 4. Let key be a new CryptoKey that represents publicKey.
+            auto public_key = ::Crypto::PK::ECPublicKey<> {
+                ::Crypto::UnsignedBigInteger::import_data(spki.raw_key.data() + 1, coord_size),
+                ::Crypto::UnsignedBigInteger::import_data(spki.raw_key.data() + 1 + coord_size, coord_size)
+            };
+            key = CryptoKey::create(m_realm, CryptoKey::InternalKeyData { public_key });
+        } else {
+            // Otherwise:
+            // 1. Perform any key import steps defined by other applicable specifications, passing format, spki and obtaining namedCurve and key.
+            // TODO: support 'applicable specifications'
+
+            // 2. If an error occurred or there are no applicable specifications, throw a DataError.
+            return WebIDL::DataError::create(m_realm, ""Invalid algorithm""_string);
+        }
+
+        // 11. If namedCurve is defined, and not equal to the namedCurve member of normalizedAlgorithm, throw a DataError.
+        if (!named_curve.is_empty() && named_curve != normalized_algorithm.named_curve)
+            return WebIDL::DataError::create(m_realm, ""Invalid algorithm""_string);
+
+        // TODO: 12. If the key value is not a valid point on the Elliptic Curve identified
+        //           by the namedCurve member of normalizedAlgorithm throw a DataError.
+
+        // 13. Set the [[type]] internal slot of key to ""public""
+        key->set_type(Bindings::KeyType::Public);
+
+        // 14. Let algorithm be a new EcKeyAlgorithm.
+        auto algorithm = EcKeyAlgorithm::create(m_realm);
+
+        // 15. Set the name attribute of algorithm to ""ECDH"".
+        algorithm->set_name(""ECDH""_string);
+
+        // 16. Set the namedCurve attribute of algorithm to namedCurve.
+        algorithm->set_named_curve(named_curve);
+
+        // 17. Set the [[algorithm]] internal slot of key to algorithm.
+        key->set_algorithm(algorithm);
+    }
+
+    // 2. If format is ""pkcs8"":
+    else if (key_format == Bindings::KeyFormat::Pkcs8) {
+        // 1. If usages contains an entry which is not ""deriveKey"" or ""deriveBits"" then throw a SyntaxError.
+        for (auto const& usage : usages) {
+            if (usage != Bindings::KeyUsage::Derivekey && usage != Bindings::KeyUsage::Derivebits) {
+                return WebIDL::SyntaxError::create(m_realm, MUST(String::formatted(""Invalid key usage '{}'"", idl_enum_to_string(usage))));
+            }
+        }
+
+        // 2. Let privateKeyInfo be the result of running the parse a privateKeyInfo algorithm over keyData.
+        // 3. If an error occurred while parsing, then throw a DataError.
+        auto private_key_info = TRY(parse_a_private_key_info(m_realm, key_data.get<ByteBuffer>()));
+
+        // 4. If the algorithm object identifier field of the privateKeyAlgorithm PrivateKeyAlgorithm field of privateKeyInfo
+        //    is not equal to the id-ecPublicKey object identifier defined in [RFC5480], then throw a DataError.
+        if (private_key_info.algorithm.identifier != ::Crypto::Certificate::ec_public_key_encryption_oid)
+            return WebIDL::DataError::create(m_realm, ""Invalid algorithm""_string);
+
+        // 5. If the parameters field of the privateKeyAlgorithm PrivateKeyAlgorithmIdentifier field
+        //    of privateKeyInfo is not present, then throw a DataError.
+        if (!private_key_info.algorithm.ec_parameters.has_value())
+            return WebIDL::DataError::create(m_realm, ""Invalid algorithm parameters""_string);
+
+        // 6. Let params be the parameters field of the privateKeyAlgorithm PrivateKeyAlgorithmIdentifier field of privateKeyInfo.
+        auto ec_params = private_key_info.algorithm.ec_parameters;
+
+        // 7. If params is not an instance of the ECParameters ASN.1 type defined in [RFC5480] that specifies a namedCurve, then throw a DataError.
+        // 8. Let namedCurve be a string whose initial value is undefined.
+        String named_curve;
+
+        // 9. If params is equivalent to the secp256r1 object identifier defined in [RFC5480]:
+        if (ec_params == ::Crypto::Certificate::secp256r1_oid) {
+            // Set namedCurve to ""P-256"".
+            named_curve = ""P-256""_string;
+        }
+        // If params is equivalent to the secp384r1 object identifier defined in [RFC5480]:
+        else if (ec_params == ::Crypto::Certificate::secp384r1_oid) {
+            // Set namedCurve to ""P-384"".
+            named_curve = ""P-384""_string;
+        }
+        // If params is equivalent to the secp521r1 object identifier defined in [RFC5480]:
+        else if (ec_params == ::Crypto::Certificate::secp521r1_oid) {
+            // Set namedCurve to ""P-521"".
+            named_curve = ""P-521""_string;
+        }
+
+        // 10. If namedCurve is not undefined
+        if (!named_curve.is_empty()) {
+            // 1. Let ecPrivateKey be the result of performing the parse an ASN.1 structure algorithm,
+            //    with data as the privateKey field of privateKeyInfo, structure as the ASN.1 ECPrivateKey
+            //    structure specified in Section 3 of [RFC5915], and exactData set to true.
+            // NOTE: We already did this in parse_a_private_key_info
+            // 2. If an error occurred while parsing, then throw a DataError.
+            auto& ec_private_key = private_key_info.ec;
+
+            // 3. If the parameters field of ecPrivateKey is present, and is not an instance
+            //    of the namedCurve ASN.1 type defined in [RFC5480], or does not contain
+            //    the same object identifier as the parameters field of the privateKeyAlgorithm
+            //    PrivateKeyAlgorithmIdentifier field of privateKeyInfo, throw a DataError.
+            if (ec_private_key.parameters().has_value() && *ec_private_key.parameters() != ec_params.value_or({}))
+                return WebIDL::DataError::create(m_realm, ""Invalid algorithm parameters""_string);
+
+            // 4. Let key be a new CryptoKey that represents the Elliptic Curve private key identified
+            //    by performing the conversion steps defined in Section 3 of [RFC5915] using ecPrivateKey.
+            key = CryptoKey::create(m_realm, CryptoKey::InternalKeyData { ec_private_key });
+        } else {
+            // Otherwise:
+            // 1. Perform any key import steps defined by other applicable specifications, passing format, spki and obtaining namedCurve and key.
+            // TODO: support 'applicable specifications'
+
+            // 2. If an error occurred or there are no applicable specifications, throw a DataError.
+            return WebIDL::DataError::create(m_realm, ""Invalid algorithm""_string);
+        }
+
+        // 11. If namedCurve is defined, and not equal to the namedCurve member of normalizedAlgorithm, throw a DataError.
+        if (!named_curve.is_empty() && named_curve != normalized_algorithm.named_curve)
+            return WebIDL::DataError::create(m_realm, ""Invalid algorithm""_string);
+
+        // TODO: 12. If the key value is not a valid point on the Elliptic Curve identified
+        //           by the namedCurve member of normalizedAlgorithm throw a DataError.
+
+        // 13. Set the [[type]] internal slot of key to ""private"".
+        key->set_type(Bindings::KeyType::Private);
+
+        // 14. Let algorithm be a new EcKeyAlgorithm.
+        auto algorithm = EcKeyAlgorithm::create(m_realm);
+
+        // 15. Set the name attribute of algorithm to ""ECDH"".
+        algorithm->set_name(""ECDH""_string);
+
+        // 16. Set the namedCurve attribute of algorithm to namedCurve.
+        algorithm->set_named_curve(named_curve);
+
+        // 17. Set the [[algorithm]] internal slot of key to algorithm.
+        key->set_algorithm(algorithm);
+    }
+
+    // 2. If format is ""jwk"":
+    else if (key_format == Bindings::KeyFormat::Jwk) {
+        // 1. If keyData is a JsonWebKey dictionary: Let jwk equal keyData.
+        //    Otherwise: Throw a DataError.
+        if (!key_data.has<Bindings::JsonWebKey>())
+            return WebIDL::DataError::create(m_realm, ""keyData is not a JsonWebKey dictionary""_string);
+        auto& jwk = key_data.get<Bindings::JsonWebKey>();
+
+        // 2. If the d field is present and if usages contains an entry which is not ""deriveKey"" or ""deriveBits"" then throw a SyntaxError.
+        if (jwk.d.has_value() && !usages.is_empty()) {
+            for (auto const& usage : usages) {
+                if (usage != Bindings::KeyUsage::Derivekey && usage != Bindings::KeyUsage::Derivebits) {
+                    return WebIDL::SyntaxError::create(m_realm, MUST(String::formatted(""Invalid key usage '{}'"", idl_enum_to_string(usage))));
+                }
+            }
+        }
+
+        // 3. If the d field is not present and if usages is not empty then throw a SyntaxError.
+        if (!jwk.d.has_value() && !usages.is_empty())
+            return WebIDL::SyntaxError::create(m_realm, ""Usages must be empty""_string);
+
+        // 4. If the kty field of jwk is not ""EC"", then throw a DataError.
+        if (jwk.kty != ""EC""sv)
+            return WebIDL::DataError::create(m_realm, ""Invalid key type""_string);
+
+        // 5. If usages is non-empty and the use field of jwk is present and is not equal to ""enc"" then throw a DataError.
+        if (!usages.is_empty() && jwk.use.has_value() && *jwk.use != ""enc""sv)
+            return WebIDL::DataError::create(m_realm, ""Invalid key use""_string);
+
+        // 6. If the key_ops field of jwk is present, and is invalid according to the requirements of JSON Web Key [JWK],
+        //    or it does not contain all of the specified usages values, then throw a DataError.
+        TRY(validate_jwk_key_ops(m_realm, jwk, usages));
+
+        // 7. If the ext field of jwk is present and has the value false and extractable is true, then throw a DataError.
+        if (jwk.ext.has_value() && !*jwk.ext && extractable)
+            return WebIDL::DataError::create(m_realm, ""Invalid extractable""_string);
+
+        // 8. Let namedCurve be a string whose value is equal to the crv field of jwk.
+        // NOTE: The spec does not say what to do if crv is missing.
+        if (!jwk.crv.has_value())
+            return WebIDL::DataError::create(m_realm, ""Invalid key crv""_string);
+        auto named_curve = *jwk.crv;
+
+        // 9. If namedCurve is not equal to the namedCurve member of normalizedAlgorithm, throw a DataError.
+        if (named_curve != normalized_algorithm.named_curve)
+            return WebIDL::DataError::create(m_realm, ""Invalid algorithm""_string);
+
+        // 10. If namedCurve is ""P-256"", ""P-384"" or ""P-521"":
+        if (named_curve.is_one_of(""P-256""sv, ""P-384""sv, ""P-521""sv)) {
+            size_t coord_size;
+            if (named_curve == ""P-256""sv)
+                coord_size = 32;
+            else if (named_curve == ""P-384""sv)
+                coord_size = 48;
+            else if (named_curve == ""P-521""sv)
+                coord_size = 66;
+            else
+                VERIFY_NOT_REACHED();
+
+            // NOTE: according to Section 6.2.1 and 6.2.2 of JSON Web Algorithms [JWA], x and y are always required
+            if (!jwk.x.has_value() || !jwk.y.has_value())
+                return WebIDL::DataError::create(m_realm, ""Invalid key""_string);
+
+            auto maybe_x_bytes = decode_base64url(jwk.x.value());
+            if (maybe_x_bytes.is_error()) {
+                return WebIDL::DataError::create(m_realm, ""Failed to decode base64""_string);
+            }
+            auto x_bytes = maybe_x_bytes.release_value();
+            if (x_bytes.size() != coord_size)
+                return WebIDL::DataError::create(m_realm, ""Invalid key size""_string);
+
+            auto maybe_y_bytes = decode_base64url(jwk.y.value());
+            if (maybe_y_bytes.is_error()) {
+                return WebIDL::DataError::create(m_realm, ""Failed to decode base64""_string);
+            }
+            auto y_bytes = maybe_y_bytes.release_value();
+            if (y_bytes.size() != coord_size)
+                return WebIDL::DataError::create(m_realm, ""Invalid key size""_string);
+
+            auto public_key = ::Crypto::PK::ECPublicKey<> {
+                ::Crypto::UnsignedBigInteger::import_data(x_bytes),
+                ::Crypto::UnsignedBigInteger::import_data(y_bytes),
+            };
+
+            // If the d field is present:
+            if (jwk.d.has_value()) {
+                // 1. If jwk does not meet the requirements of Section 6.2.2 of JSON Web Algorithms [JWA], then throw a DataError.
+                auto maybe_d_bytes = decode_base64url(jwk.d.value());
+                if (maybe_d_bytes.is_error()) {
+                    return WebIDL::DataError::create(m_realm, ""Failed to decode base64""_string);
+                }
+                auto d_bytes = maybe_d_bytes.release_value();
+                if (d_bytes.size() != coord_size)
+                    return WebIDL::DataError::create(m_realm, ""Invalid key size""_string);
+
+                // 2. Let key be a new CryptoKey object that represents the Elliptic Curve private key identified
+                //    by interpreting jwk according to Section 6.2.2 of JSON Web Algorithms [JWA].
+                auto private_key = ::Crypto::PK::ECPrivateKey<> {
+                    ::Crypto::UnsignedBigInteger::import_data(d_bytes),
+                    {},
+                    public_key,
+                };
+                key = CryptoKey::create(m_realm, CryptoKey::InternalKeyData { private_key });
+
+                // 3. Set the [[type]] internal slot of Key to ""private"".
+                key->set_type(Bindings::KeyType::Private);
+            } else {
+                // Otherwise:
+                // 1. If jwk does not meet the requirements of Section 6.2.1 of JSON Web Algorithms [JWA], then throw a DataError.
+                // 2. Let key be a new CryptoKey object that represents the Elliptic Curve public key identified by interpreting
+                //    jwk according to Section 6.2.1 of JSON Web Algorithms [JWA].
+                key = CryptoKey::create(m_realm, CryptoKey::InternalKeyData { public_key });
+
+                // 3. Set the [[type]] internal slot of Key to ""public"".
+                key->set_type(Bindings::KeyType::Public);
+            }
+        } else {
+            // 1. Perform any key import steps defined by other applicable specifications, passing format, jwk and obtaining key.
+            // TODO: support 'applicable specifications'
+
+            // 2. If an error occurred or there are no applicable specifications, throw a DataError.
+            return WebIDL::DataError::create(m_realm, ""Invalid algorithm""_string);
+        }
+
+        // TODO: 11. If the key value is not a valid point on the Elliptic Curve identified
+        //           by the namedCurve member of normalizedAlgorithm throw a DataError.
+
+        // 12. Let algorithm be a new instance of an EcKeyAlgorithm object.
+        auto algorithm = EcKeyAlgorithm::create(m_realm);
+
+        // 13. Set the name attribute of algorithm to ""ECDH"".
+        algorithm->set_name(""ECDH""_string);
+
+        // 14. Set the namedCurve attribute of algorithm to namedCurve.
+        algorithm->set_named_curve(named_curve);
+
+        // 15. Set the [[algorithm]] internal slot of key to algorithm.
+        key->set_algorithm(algorithm);
+    }
+
+    // 2. If format is ""raw"":
+    else if (key_format == Bindings::KeyFormat::Raw) {
+        // 1. If the namedCurve member of normalizedAlgorithm is not a named curve, then throw a DataError.
+        if (!normalized_algorithm.named_curve.is_one_of(""P-256""sv, ""P-384""sv, ""P-521""sv))
+            return WebIDL::DataError::create(m_realm, ""Invalid algorithm""_string);
+
+        // 2. If usages is not the empty list, then throw a SyntaxError.
+        if (!usages.is_empty())
+            return WebIDL::SyntaxError::create(m_realm, ""Usages must be empty""_string);
+
+        // 3. If namedCurve is ""P-256"", ""P-384"" or ""P-521"":
+        if (normalized_algorithm.named_curve.is_one_of(""P-256""sv, ""P-384""sv, ""P-521""sv)) {
+            auto key_bytes = key_data.get<ByteBuffer>();
+
+            size_t coord_size;
+            if (normalized_algorithm.named_curve == ""P-256""sv)
+                coord_size = 32;
+            else if (normalized_algorithm.named_curve == ""P-384""sv)
+                coord_size = 48;
+            else if (normalized_algorithm.named_curve == ""P-521""sv)
+                coord_size = 66;
+            else
+                VERIFY_NOT_REACHED();
+
+            if (key_bytes.size() != 1 + 2 * coord_size)
+                return WebIDL::DataError::create(m_realm, ""Invalid key size""_string);
+
+            // 1. Let Q be the Elliptic Curve public key on the curve identified by the namedCurve
+            //          member of normalizedAlgorithm identified by performing the conversion steps
+            //          defined in Section 2.3.4 of [SEC1] to keyData.
+            // The uncompressed point format MUST be supported.
+
+            // 2. If the implementation does not support the compressed point format and a compressed point is provided, throw a DataError.
+            if (key_bytes[0] != 0x04)
+                return WebIDL::DataError::create(m_realm, ""Unsupported key format""_string);
+
+            // 3. If a decode error occurs or an identity point is found, throw a DataError.
+            // 4. Let key be a new CryptoKey that represents Q.
+            auto public_key = ::Crypto::PK::ECPublicKey<> {
+                ::Crypto::UnsignedBigInteger::import_data(key_bytes.data() + 1, coord_size),
+                ::Crypto::UnsignedBigInteger::import_data(key_bytes.data() + 1 + coord_size, coord_size)
+            };
+
+            key = CryptoKey::create(m_realm, CryptoKey::InternalKeyData { public_key });
+        } else {
+            // Otherwise:
+            // 1. Perform any key import steps defined by other applicable specifications, passing format, keyData and obtaining key.
+            // TODO: support 'applicable specifications'
+
+            // 2. If an error occured or there are no applicable specifications, throw a DataError.
+            return WebIDL::DataError::create(m_realm, ""Invalid algorithm""_string);
+        }
+
+        // 4. Let algorithm be a new EcKeyAlgorithm object.
+        auto algorithm = EcKeyAlgorithm::create(m_realm);
+
+        // 5. Set the name attribute of algorithm to ""ECDH"".
+        algorithm->set_name(""ECDH""_string);
+
+        // 6. Set the namedCurve attribute of algorithm to equal the namedCurve member of normalizedAlgorithm.
+        algorithm->set_named_curve(normalized_algorithm.named_curve);
+
+        // 7. Set the [[type]] internal slot of key to ""public""
+        key->set_type(Bindings::KeyType::Public);
+
+        // 8. Set the [[algorithm]] internal slot of key to algorithm.
+        key->set_algorithm(algorithm);
+    }
+
+    // 3. Return key
+    return GC::Ref { *key };
+}
+
 // https://wicg.github.io/webcrypto-secure-curves/#ed25519-operations
 WebIDL::ExceptionOr<Variant<GC::Ref<CryptoKey>, GC::Ref<CryptoKeyPair>>> ED25519::generate_key([[maybe_unused]] AlgorithmParams const& params, bool extractable, Vector<Bindings::KeyUsage> const& key_usages)
 {
diff --git a/Libraries/LibWeb/Crypto/CryptoAlgorithms.h b/Libraries/LibWeb/Crypto/CryptoAlgorithms.h
index dc005f1ec48c..59edde63de26 100644
--- a/Libraries/LibWeb/Crypto/CryptoAlgorithms.h
+++ b/Libraries/LibWeb/Crypto/CryptoAlgorithms.h
@@ -496,8 +496,8 @@ class ECDSA : public AlgorithmMethods {
 class ECDH : public AlgorithmMethods {
 public:
     virtual WebIDL::ExceptionOr<Variant<GC::Ref<CryptoKey>, GC::Ref<CryptoKeyPair>>> generate_key(AlgorithmParams const&, bool, Vector<Bindings::KeyUsage> const&) override;
-    // TODO: virtual WebIDL::ExceptionOr<GC::Ref<CryptoKey>> import_key(AlgorithmParams const&, Bindings::KeyFormat, CryptoKey::InternalKeyData, bool, Vector<Bindings::KeyUsage> const&) override;
     // TODO: virtual WebIDL::ExceptionOr<GC::Ref<JS::Object>> export_key(Bindings::KeyFormat, GC::Ref<CryptoKey>) override;
+    virtual WebIDL::ExceptionOr<GC::Ref<CryptoKey>> import_key(AlgorithmParams const&, Bindings::KeyFormat, CryptoKey::InternalKeyData, bool, Vector<Bindings::KeyUsage> const&) override;
     virtual WebIDL::ExceptionOr<GC::Ref<JS::ArrayBuffer>> derive_bits(AlgorithmParams const&, GC::Ref<CryptoKey>, Optional<u32>) override;
 
     static NonnullOwnPtr<AlgorithmMethods> create(JS::Realm& realm) { return adopt_own(*new ECDH(realm)); }
diff --git a/Libraries/LibWeb/Crypto/SubtleCrypto.cpp b/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
index 30f784cccaa9..3587037a1980 100644
--- a/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
+++ b/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
@@ -805,7 +805,7 @@ SupportedAlgorithmsMap const& supported_algorithms()
     // FIXME: define_an_algorithm<ECDSA>(""exportKey""_string, ""ECDSA""_string);
 
     // https://w3c.github.io/webcrypto/#ecdh-registration
-    // FIXME: define_an_algorithm<ECDH, EcKeyImportParams>(""importKey""_string, ""ECDH""_string);
+    define_an_algorithm<ECDH, EcKeyImportParams>(""importKey""_string, ""ECDH""_string);
     // FIXME: define_an_algorithm<ECDH>(""exportKey""_string, ""ECDH""_string);
     define_an_algorithm<ECDH, EcdhKeyDerivePrams>(""deriveBits""_string, ""ECDH""_string);
     define_an_algorithm<ECDH, EcKeyGenParams>(""generateKey""_string, ""ECDH""_string);"
bd26e5dce9f71b94159ecc21634250310caed6e8,2024-02-25 03:33:08,Dan Klishch,jsspeccompiler: Parse <sup> as raising a number to a power in xspec mode,False,Parse <sup> as raising a number to a power in xspec mode,jsspeccompiler,"diff --git a/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/AST/AST.h b/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/AST/AST.h
index 28afd0a52fbc..9937c9608333 100644
--- a/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/AST/AST.h
+++ b/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/AST/AST.h
@@ -253,7 +253,8 @@ class StringLiteral : public Expression {
     F(MemberAccess)                   \
     F(Minus)                          \
     F(Multiplication)                 \
-    F(Plus)
+    F(Plus)                           \
+    F(Power)
 
 #define NAME(name) name,
 #define STRINGIFY(name) #name##sv,
diff --git a/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Parser/Lexer.cpp b/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Parser/Lexer.cpp
index e855075440bc..cd1e8f186bd5 100644
--- a/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Parser/Lexer.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Parser/Lexer.cpp
@@ -106,6 +106,7 @@ void tokenize_string(SpecificationParsingContext& ctx, XML::Node const* node, St
 
 enum class TreeType {
     AlgorithmStep,
+    NestedExpression,
     Header,
 };
 
@@ -175,6 +176,14 @@ void tokenize_tree(SpecificationParsingContext& ctx, TokenizerState& state, XML:
                     return;
                 }
 
+                if (element.name == tag_sup) {
+                    tokens.append({ TokenType::Superscript, """"sv, move(child_location) });
+                    tokens.append({ TokenType::ParenOpen, """"sv, move(child_location) });
+                    tokenize_tree(ctx, state, child, TreeType::NestedExpression);
+                    tokens.append({ TokenType::ParenClose, """"sv, move(child_location) });
+                    return;
+                }
+
                 if (tree_type == TreeType::Header && element.name == tag_span) {
                     auto element_class = get_attribute_by_name(child, attribute_class);
                     if (element_class != class_secnum)
@@ -207,7 +216,7 @@ void tokenize_tree(SpecificationParsingContext& ctx, TokenizerState& state, XML:
             [&](auto const&) {});
     }
 
-    if (tokens.size() && tokens.last().type == TokenType::MemberAccess)
+    if (tree_type == TreeType::AlgorithmStep && tokens.size() && tokens.last().type == TokenType::MemberAccess)
         tokens.last().type = TokenType::Dot;
 }
 }
diff --git a/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Parser/Lexer.h b/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Parser/Lexer.h
index 469ad3213867..a2b173cdcf8a 100644
--- a/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Parser/Lexer.h
+++ b/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Parser/Lexer.h
@@ -22,6 +22,7 @@ inline constexpr StringView tag_ol = ""ol""sv;
 inline constexpr StringView tag_p = ""p""sv;
 inline constexpr StringView tag_span = ""span""sv;
 inline constexpr StringView tag_specification = ""specification""sv;
+inline constexpr StringView tag_sup = ""sup""sv;
 inline constexpr StringView tag_var = ""var""sv;
 
 inline constexpr StringView attribute_aoid = ""aoid""sv;
diff --git a/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Parser/Token.h b/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Parser/Token.h
index 0b6a48b55274..066cbcc19b1e 100644
--- a/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Parser/Token.h
+++ b/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Parser/Token.h
@@ -46,6 +46,7 @@ constexpr i32 closing_bracket_precedence = 18;
     F(Plus, 6, Invalid, Plus, Invalid, ""plus"")                                       \
     F(SectionNumber, -1, Invalid, Invalid, Invalid, ""section number"")                \
     F(String, -1, Invalid, Invalid, Invalid, ""string literal"")                       \
+    F(Superscript, 4, Invalid, Power, Invalid, ""subscript"")                          \
     F(UnaryMinus, 3, Minus, Invalid, Invalid, ""unary minus"")                         \
     F(Undefined, -1, Invalid, Invalid, Invalid, ""constant"")                          \
     F(Word, -1, Invalid, Invalid, Invalid, ""word"")
diff --git a/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Tests/spec-single-function-simple.xml b/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Tests/spec-single-function-simple.xml
index 3e99dd81d262..1b2c231f64ba 100644
--- a/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Tests/spec-single-function-simple.xml
+++ b/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Tests/spec-single-function-simple.xml
@@ -24,7 +24,7 @@
                         <emu-xref aoid=""𝔽""><a href=""https://tc39.es/ecma262/#𝔽"">𝔽</a></emu-xref>
                         (
                         <emu-xref aoid=""floor""><a href=""https://tc39.es/ecma262/#eqn-floor"">floor</a></emu-xref>
-                        (<var>nowNs</var> / 1000000)).
+                        (<var>nowNs</var> / 10<sup>6</sup>)).
                      </li>
                   </ol>
                </emu-alg>
diff --git a/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Tests/spec-single-function-simple.xml.expectation b/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Tests/spec-single-function-simple.xml.expectation
index d8d93a437d50..cdc17c6de011 100644
--- a/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Tests/spec-single-function-simple.xml.expectation
+++ b/Meta/Lagom/Tools/CodeGenerators/JSSpecCompiler/Tests/spec-single-function-simple.xml.expectation
@@ -17,5 +17,7 @@ TreeList
         UnresolvedReference floor
         BinaryOperation Division
           Var nowNs
-          MathematicalConstant 1000000
+          BinaryOperation Power
+            MathematicalConstant 10
+            MathematicalConstant 6"
caf6dd56809bb305ae1ebffbcc39990c8c8b864c,2023-02-17 21:55:57,FrHun,libgui: Implement calculated sizes for ValueSlider,False,Implement calculated sizes for ValueSlider,libgui,"diff --git a/Userland/Libraries/LibGUI/ValueSlider.cpp b/Userland/Libraries/LibGUI/ValueSlider.cpp
index ac8cde7eec4f..e7e7de95e2f2 100644
--- a/Userland/Libraries/LibGUI/ValueSlider.cpp
+++ b/Userland/Libraries/LibGUI/ValueSlider.cpp
@@ -24,7 +24,7 @@ ValueSlider::ValueSlider(Gfx::Orientation orientation, String suffix)
     // FIXME: Implement vertical mode
     VERIFY(orientation == Orientation::Horizontal);
 
-    set_fixed_height(20);
+    set_preferred_size(SpecialDimension::Fit);
 
     m_textbox = add<GUI::TextBox>();
     m_textbox->set_relative_rect({ 0, 0, 34, 20 });
@@ -119,9 +119,14 @@ Gfx::IntRect ValueSlider::bar_rect() const
     return bar_rect;
 }
 
+int ValueSlider::knob_length() const
+{
+    return m_knob_style == KnobStyle::Wide ? 13 : 7;
+}
+
 Gfx::IntRect ValueSlider::knob_rect() const
 {
-    int knob_thickness = m_knob_style == KnobStyle::Wide ? 13 : 7;
+    int knob_thickness = knob_length();
 
     Gfx::IntRect knob_rect = bar_rect();
     knob_rect.set_width(knob_thickness);
@@ -202,4 +207,20 @@ void ValueSlider::mouseup_event(MouseEvent& event)
     m_dragging = false;
 }
 
+Optional<UISize> ValueSlider::calculated_min_size() const
+{
+    auto content_min_size = m_textbox->effective_min_size();
+
+    if (orientation() == Gfx::Orientation::Vertical)
+        return { { content_min_size.width(), content_min_size.height().as_int() + knob_length() } };
+    return { { content_min_size.width().as_int() + knob_length(), content_min_size.height() } };
+}
+
+Optional<UISize> ValueSlider::calculated_preferred_size() const
+{
+    if (orientation() == Gfx::Orientation::Vertical)
+        return { { SpecialDimension::Shrink, SpecialDimension::OpportunisticGrow } };
+    return { { SpecialDimension::OpportunisticGrow, SpecialDimension::Shrink } };
+}
+
 }
diff --git a/Userland/Libraries/LibGUI/ValueSlider.h b/Userland/Libraries/LibGUI/ValueSlider.h
index 191da5a3432d..96db34c37444 100644
--- a/Userland/Libraries/LibGUI/ValueSlider.h
+++ b/Userland/Libraries/LibGUI/ValueSlider.h
@@ -43,6 +43,10 @@ class ValueSlider : public AbstractSlider {
     int value_at(Gfx::IntPoint position) const;
     Gfx::IntRect bar_rect() const;
     Gfx::IntRect knob_rect() const;
+    int knob_length() const;
+
+    virtual Optional<UISize> calculated_min_size() const override;
+    virtual Optional<UISize> calculated_preferred_size() const override;
 
     String m_suffix {};
     Orientation m_orientation { Orientation::Horizontal };"
53c4be926b74e4ad7cd4d95a78c1cb8342098884,2021-02-28 22:49:52,Adam Hodgen,libweb: Set link cursor via the default CSS,False,Set link cursor via the default CSS,libweb,"diff --git a/Userland/Libraries/LibWeb/CSS/Default.css b/Userland/Libraries/LibWeb/CSS/Default.css
index e151de6b5fb5..6376d850ddb7 100644
--- a/Userland/Libraries/LibWeb/CSS/Default.css
+++ b/Userland/Libraries/LibWeb/CSS/Default.css
@@ -2,6 +2,10 @@ html {
     font-family: sans-serif;
 }
 
+a {
+    cursor: pointer;
+}
+
 head,
 link,
 meta,
diff --git a/Userland/Libraries/LibWeb/OutOfProcessWebView.cpp b/Userland/Libraries/LibWeb/OutOfProcessWebView.cpp
index 7b34e9f9bb5c..d2373141683d 100644
--- a/Userland/Libraries/LibWeb/OutOfProcessWebView.cpp
+++ b/Userland/Libraries/LibWeb/OutOfProcessWebView.cpp
@@ -252,7 +252,6 @@ void OutOfProcessWebView::notify_server_did_request_scroll_into_view(Badge<WebCo
 
 void OutOfProcessWebView::notify_server_did_hover_link(Badge<WebContentClient>, const URL& url)
 {
-    set_override_cursor(Gfx::StandardCursor::Hand);
     if (on_link_hover)
         on_link_hover(url);
 }"
960953923683e91d817e4803c0369809f4ec93b6,2020-07-04 14:19:36,AnotherTest,kernel: Change the value of SO_KEEPALIVE to reflect LibC's constant,False,Change the value of SO_KEEPALIVE to reflect LibC's constant,kernel,"diff --git a/Kernel/UnixTypes.h b/Kernel/UnixTypes.h
index f01cf0aa5349..a07ebf4f579d 100644
--- a/Kernel/UnixTypes.h
+++ b/Kernel/UnixTypes.h
@@ -450,11 +450,11 @@ struct pollfd {
 
 #define SO_RCVTIMEO 1
 #define SO_SNDTIMEO 2
-#define SO_KEEPALIVE 3
 #define SO_ERROR 4
 #define SO_PEERCRED 5
 #define SO_REUSEADDR 6
 #define SO_BINDTODEVICE 7
+#define SO_KEEPALIVE 9
 
 #define IPPROTO_IP 0
 #define IPPROTO_ICMP 1"
6f52064c4f41de51c1f062d251fd2d8dcaa9f9b3,2024-11-24 19:00:32,Psychpsyo,libweb: Make SVGs respect their CSS transforms,False,Make SVGs respect their CSS transforms,libweb,"diff --git a/Libraries/LibWeb/Painting/SVGSVGPaintable.cpp b/Libraries/LibWeb/Painting/SVGSVGPaintable.cpp
index 90f59a86ecfa..596bd32563b6 100644
--- a/Libraries/LibWeb/Painting/SVGSVGPaintable.cpp
+++ b/Libraries/LibWeb/Painting/SVGSVGPaintable.cpp
@@ -51,60 +51,61 @@ static Gfx::FloatMatrix4x4 matrix_with_scaled_translation(Gfx::FloatMatrix4x4 ma
     return matrix;
 }
 
-void SVGSVGPaintable::paint_descendants(PaintContext& context, PaintableBox const& paintable, PaintPhase phase)
+void SVGSVGPaintable::paint_svg_box(PaintContext& context, PaintableBox const& svg_box, PaintPhase phase)
 {
-    if (phase != PaintPhase::Foreground)
-        return;
-
-    auto paint_svg_box = [&](auto& svg_box) {
-        auto const& computed_values = svg_box.computed_values();
-
-        auto filters = paintable.computed_values().filter();
-        auto masking_area = svg_box.get_masking_area();
-        auto needs_to_save_state = computed_values.opacity() < 1 || svg_box.has_css_transform() || svg_box.get_masking_area().has_value() || !filters.is_none();
-
-        if (needs_to_save_state) {
-            context.display_list_recorder().save();
-        }
-
-        if (computed_values.opacity() < 1) {
-            context.display_list_recorder().apply_opacity(computed_values.opacity());
-        }
-
-        context.display_list_recorder().apply_filters(filters);
-
-        if (svg_box.has_css_transform()) {
-            auto transform_matrix = svg_box.transform();
-            Gfx::FloatPoint transform_origin = svg_box.transform_origin().template to_type<float>();
-            auto to_device_pixels_scale = float(context.device_pixels_per_css_pixel());
-            context.display_list_recorder().apply_transform(transform_origin.scaled(to_device_pixels_scale), matrix_with_scaled_translation(transform_matrix, to_device_pixels_scale));
+    auto const& computed_values = svg_box.computed_values();
+
+    auto filters = svg_box.computed_values().filter();
+    auto masking_area = svg_box.get_masking_area();
+    auto needs_to_save_state = computed_values.opacity() < 1 || svg_box.has_css_transform() || svg_box.get_masking_area().has_value() || !filters.is_none();
+
+    if (needs_to_save_state) {
+        context.display_list_recorder().save();
+    }
+
+    if (computed_values.opacity() < 1) {
+        context.display_list_recorder().apply_opacity(computed_values.opacity());
+    }
+
+    context.display_list_recorder().apply_filters(filters);
+
+    if (svg_box.has_css_transform()) {
+        auto transform_matrix = svg_box.transform();
+        Gfx::FloatPoint transform_origin = svg_box.transform_origin().template to_type<float>();
+        auto to_device_pixels_scale = float(context.device_pixels_per_css_pixel());
+        context.display_list_recorder().apply_transform(transform_origin.scaled(to_device_pixels_scale), matrix_with_scaled_translation(transform_matrix, to_device_pixels_scale));
+    }
+
+    if (masking_area.has_value()) {
+        if (masking_area->is_empty())
+            return;
+        auto mask_bitmap = svg_box.calculate_mask(context, *masking_area);
+        if (mask_bitmap) {
+            auto source_paintable_rect = context.enclosing_device_rect(*masking_area).template to_type<int>();
+            auto origin = source_paintable_rect.location();
+            context.display_list_recorder().apply_mask_bitmap(origin, mask_bitmap.release_nonnull(), *svg_box.get_mask_type());
         }
+    }
 
-        if (masking_area.has_value()) {
-            if (masking_area->is_empty())
-                return;
-            auto mask_bitmap = svg_box.calculate_mask(context, *masking_area);
-            if (mask_bitmap) {
-                auto source_paintable_rect = context.enclosing_device_rect(*masking_area).template to_type<int>();
-                auto origin = source_paintable_rect.location();
-                context.display_list_recorder().apply_mask_bitmap(origin, mask_bitmap.release_nonnull(), *svg_box.get_mask_type());
-            }
-        }
+    svg_box.before_paint(context, PaintPhase::Foreground);
+    svg_box.paint(context, PaintPhase::Foreground);
+    svg_box.after_paint(context, PaintPhase::Foreground);
 
-        svg_box.before_paint(context, PaintPhase::Foreground);
-        svg_box.paint(context, PaintPhase::Foreground);
-        svg_box.after_paint(context, PaintPhase::Foreground);
+    paint_descendants(context, svg_box, phase);
 
-        paint_descendants(context, svg_box, phase);
+    if (needs_to_save_state) {
+        context.display_list_recorder().restore();
+    }
+}
 
-        if (needs_to_save_state) {
-            context.display_list_recorder().restore();
-        }
-    };
+void SVGSVGPaintable::paint_descendants(PaintContext& context, PaintableBox const& paintable, PaintPhase phase)
+{
+    if (phase != PaintPhase::Foreground)
+        return;
 
     paintable.before_children_paint(context, PaintPhase::Foreground);
     paintable.for_each_child_of_type<PaintableBox>([&](PaintableBox& child) {
-        paint_svg_box(child);
+        paint_svg_box(context, child, phase);
         return IterationDecision::Continue;
     });
     paintable.after_children_paint(context, PaintPhase::Foreground);
diff --git a/Libraries/LibWeb/Painting/SVGSVGPaintable.h b/Libraries/LibWeb/Painting/SVGSVGPaintable.h
index cc364b7f989a..c5c3ceee70e2 100644
--- a/Libraries/LibWeb/Painting/SVGSVGPaintable.h
+++ b/Libraries/LibWeb/Painting/SVGSVGPaintable.h
@@ -23,6 +23,7 @@ class SVGSVGPaintable final : public PaintableBox {
 
     Layout::SVGSVGBox const& layout_box() const;
 
+    static void paint_svg_box(PaintContext& context, PaintableBox const& svg_box, PaintPhase phase);
     static void paint_descendants(PaintContext& context, PaintableBox const& paintable, PaintPhase phase);
 
 protected:
diff --git a/Libraries/LibWeb/Painting/StackingContext.cpp b/Libraries/LibWeb/Painting/StackingContext.cpp
index 8d00a0303078..d624158365e0 100644
--- a/Libraries/LibWeb/Painting/StackingContext.cpp
+++ b/Libraries/LibWeb/Painting/StackingContext.cpp
@@ -104,7 +104,7 @@ void StackingContext::paint_svg(PaintContext& context, PaintableBox const& paint
     paintable.apply_clip_overflow_rect(context, PaintPhase::Foreground);
     paint_node(paintable, context, PaintPhase::Background);
     paint_node(paintable, context, PaintPhase::Border);
-    SVGSVGPaintable::paint_descendants(context, paintable, phase);
+    SVGSVGPaintable::paint_svg_box(context, paintable, phase);
     paintable.clear_clip_overflow_rect(context, PaintPhase::Foreground);
 }
 
diff --git a/Tests/LibWeb/Ref/expected/svg-with-css-transform.html b/Tests/LibWeb/Ref/expected/svg-with-css-transform.html
new file mode 100644
index 000000000000..b76f4dfc3e13
--- /dev/null
+++ b/Tests/LibWeb/Ref/expected/svg-with-css-transform.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<style>
+  svg {
+    position: absolute;
+    top: 50px;
+    left: 50px;
+  }
+</style>
+
+<svg viewBox=""0 0 100 100"" xmlns=""http://www.w3.org/2000/svg"" width=""100"" height=""100"">
+  <rect width=""100"" height=""100"" />
+</svg>
diff --git a/Tests/LibWeb/Ref/input/svg-with-css-transform.html b/Tests/LibWeb/Ref/input/svg-with-css-transform.html
new file mode 100644
index 000000000000..0bc7dcee7976
--- /dev/null
+++ b/Tests/LibWeb/Ref/input/svg-with-css-transform.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<link rel=""match"" href=""../expected/svg-with-css-transform.html"" />
+<style>
+  body {
+    margin: 0;
+  }
+  svg {
+    transform: translate(50px, 50px);
+  }
+</style>
+
+<svg viewBox=""0 0 100 100"" xmlns=""http://www.w3.org/2000/svg"" width=""100"" height=""100"">
+  <rect width=""100"" height=""100"" />
+</svg>"
5e473a63d30098efbfd6bd076bad1faba88d9e93,2021-11-08 05:06:19,Andreas Kling,ak: Make Error.h pull in Try.h,False,Make Error.h pull in Try.h,ak,"diff --git a/AK/Error.h b/AK/Error.h
index f79e2ff1517f..2e7295fbac00 100644
--- a/AK/Error.h
+++ b/AK/Error.h
@@ -9,6 +9,7 @@
 #include <AK/Format.h>
 #include <AK/Optional.h>
 #include <AK/StringView.h>
+#include <AK/Try.h>
 
 #if defined(__serenity__) && defined(KERNEL)
 #    include <LibC/errno_numbers.h>"
cf8427b7b46798f7e26929bb05dc5ffa33c359a5,2021-12-29 03:47:24,Stephan Unverwerth,profiler: Add source code view,False,Add source code view,profiler,"diff --git a/Userland/DevTools/Profiler/CMakeLists.txt b/Userland/DevTools/Profiler/CMakeLists.txt
index d40ca81379c3..e10a82b7d2aa 100644
--- a/Userland/DevTools/Profiler/CMakeLists.txt
+++ b/Userland/DevTools/Profiler/CMakeLists.txt
@@ -14,6 +14,7 @@ set(SOURCES
         ProfileModel.cpp
         SamplesModel.cpp
         SignpostsModel.cpp
+        SourceModel.cpp
         TimelineContainer.cpp
         TimelineHeader.cpp
         TimelineTrack.cpp
diff --git a/Userland/DevTools/Profiler/Profile.cpp b/Userland/DevTools/Profiler/Profile.cpp
index 46349dc85900..3b3df1025cb8 100644
--- a/Userland/DevTools/Profiler/Profile.cpp
+++ b/Userland/DevTools/Profiler/Profile.cpp
@@ -8,6 +8,7 @@
 #include ""DisassemblyModel.h""
 #include ""ProfileModel.h""
 #include ""SamplesModel.h""
+#include ""SourceModel.h""
 #include <AK/HashTable.h>
 #include <AK/LexicalPath.h>
 #include <AK/NonnullOwnPtrVector.h>
@@ -554,6 +555,23 @@ GUI::Model* Profile::disassembly_model()
     return m_disassembly_model;
 }
 
+void Profile::set_source_index(GUI::ModelIndex const& index)
+{
+    if (m_source_index == index)
+        return;
+    m_source_index = index;
+    auto* node = static_cast<ProfileNode*>(index.internal_data());
+    if (!node)
+        m_source_model = nullptr;
+    else
+        m_source_model = SourceModel::create(*this, *node);
+}
+
+GUI::Model* Profile::source_model()
+{
+    return m_source_model;
+}
+
 ProfileNode::ProfileNode(Process const& process)
     : m_root(true)
     , m_process(process)
diff --git a/Userland/DevTools/Profiler/Profile.h b/Userland/DevTools/Profiler/Profile.h
index e153a9bc7091..78ff901eabce 100644
--- a/Userland/DevTools/Profiler/Profile.h
+++ b/Userland/DevTools/Profiler/Profile.h
@@ -12,6 +12,7 @@
 #include ""ProfileModel.h""
 #include ""SamplesModel.h""
 #include ""SignpostsModel.h""
+#include ""SourceModel.h""
 #include <AK/Bitmap.h>
 #include <AK/FlyString.h>
 #include <AK/JsonArray.h>
@@ -147,6 +148,7 @@ class Profile {
     GUI::Model& samples_model();
     GUI::Model& signposts_model();
     GUI::Model* disassembly_model();
+    GUI::Model* source_model();
 
     const Process* find_process(pid_t pid, EventSerialNumber serial) const
     {
@@ -157,6 +159,7 @@ class Profile {
     }
 
     void set_disassembly_index(const GUI::ModelIndex&);
+    void set_source_index(const GUI::ModelIndex&);
 
     const Vector<NonnullRefPtr<ProfileNode>>& roots() const { return m_roots; }
 
@@ -281,8 +284,10 @@ class Profile {
     RefPtr<SamplesModel> m_samples_model;
     RefPtr<SignpostsModel> m_signposts_model;
     RefPtr<DisassemblyModel> m_disassembly_model;
+    RefPtr<SourceModel> m_source_model;
 
     GUI::ModelIndex m_disassembly_index;
+    GUI::ModelIndex m_source_index;
 
     Vector<NonnullRefPtr<ProfileNode>> m_roots;
     Vector<size_t> m_filtered_event_indices;
diff --git a/Userland/DevTools/Profiler/SourceModel.cpp b/Userland/DevTools/Profiler/SourceModel.cpp
new file mode 100644
index 000000000000..844d1e9064d7
--- /dev/null
+++ b/Userland/DevTools/Profiler/SourceModel.cpp
@@ -0,0 +1,217 @@
+/*
+ * Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include ""SourceModel.h""
+#include ""Profile.h""
+#include <LibDebug/DebugInfo.h>
+#include <LibGUI/Painter.h>
+#include <LibSymbolication/Symbolication.h>
+#include <stdio.h>
+
+namespace Profiler {
+
+class SourceFile final {
+public:
+    struct Line {
+        String content;
+        size_t num_samples { 0 };
+    };
+
+    static constexpr StringView source_root_path = ""/usr/src/serenity/""sv;
+
+public:
+    SourceFile(StringView filename)
+    {
+        String source_file_name = filename.replace(""../../"", source_root_path);
+
+        auto maybe_file = Core::File::open(source_file_name, Core::OpenMode::ReadOnly);
+        if (maybe_file.is_error()) {
+            dbgln(""Could not map source file \""{}\"". Tried {}. {} (errno={})"", filename, source_file_name, maybe_file.error().string_literal(), maybe_file.error().code());
+            return;
+        }
+
+        auto file = maybe_file.value();
+
+        while (!file->eof())
+            m_lines.append({ file->read_line(1024), 0 });
+    }
+
+    void try_add_samples(size_t line, size_t samples)
+    {
+        if (line < 1 || line - 1 >= m_lines.size())
+            return;
+
+        m_lines[line - 1].num_samples += samples;
+    }
+
+    Vector<Line> const& lines() const { return m_lines; }
+
+private:
+    Vector<Line> m_lines;
+};
+
+static Gfx::Bitmap const& heat_gradient()
+{
+    static RefPtr<Gfx::Bitmap> bitmap;
+    if (!bitmap) {
+        bitmap = Gfx::Bitmap::try_create(Gfx::BitmapFormat::BGRx8888, { 101, 1 }).release_value_but_fixme_should_propagate_errors();
+        GUI::Painter painter(*bitmap);
+        painter.fill_rect_with_gradient(Orientation::Horizontal, bitmap->rect(), Color::from_rgb(0xffc080), Color::from_rgb(0xff3000));
+    }
+    return *bitmap;
+}
+
+static Color color_for_percent(int percent)
+{
+    VERIFY(percent >= 0 && percent <= 100);
+    return heat_gradient().get_pixel(percent, 0);
+}
+
+SourceModel::SourceModel(Profile& profile, ProfileNode& node)
+    : m_profile(profile)
+    , m_node(node)
+{
+    FlatPtr base_address = 0;
+    Debug::DebugInfo const* debug_info;
+    if (auto maybe_kernel_base = Symbolication::kernel_base(); maybe_kernel_base.has_value() && m_node.address() >= *maybe_kernel_base) {
+        if (!g_kernel_debuginfo_object.has_value())
+            return;
+        base_address = maybe_kernel_base.release_value();
+        if (g_kernel_debug_info == nullptr)
+            g_kernel_debug_info = make<Debug::DebugInfo>(g_kernel_debuginfo_object->elf, String::empty(), base_address);
+        debug_info = g_kernel_debug_info.ptr();
+    } else {
+        auto const& process = node.process();
+        auto const* library_data = process.library_metadata.library_containing(node.address());
+        if (!library_data) {
+            dbgln(""no library data for address {:p}"", node.address());
+            return;
+        }
+        base_address = library_data->base;
+        debug_info = &library_data->load_debug_info(base_address);
+    }
+
+    VERIFY(debug_info != nullptr);
+
+    // Try to read all source files contributing to the selected function and aggregate the samples by line.
+    HashMap<String, SourceFile> source_files;
+    for (auto const& pair : node.events_per_address()) {
+        auto position = debug_info->get_source_position(pair.key - base_address);
+        if (position.has_value()) {
+            auto it = source_files.find(position.value().file_path);
+            if (it == source_files.end()) {
+                source_files.set(position.value().file_path, SourceFile(position.value().file_path));
+                it = source_files.find(position.value().file_path);
+            }
+
+            it->value.try_add_samples(position.value().line_number, pair.value);
+        }
+    }
+
+    // Process source file map and turn content into view model
+    for (auto const& file_iterator : source_files) {
+        u32 line_number = 0;
+        for (auto const& line_iterator : file_iterator.value.lines()) {
+            line_number++;
+
+            m_source_lines.append({
+                (u32)line_iterator.num_samples,
+                line_iterator.num_samples * 100.0f / node.event_count(),
+                file_iterator.key,
+                line_number,
+                line_iterator.content,
+            });
+        }
+    }
+}
+
+int SourceModel::row_count(GUI::ModelIndex const&) const
+{
+    return m_source_lines.size();
+}
+
+String SourceModel::column_name(int column) const
+{
+    switch (column) {
+    case Column::SampleCount:
+        return m_profile.show_percentages() ? ""% Samples"" : ""# Samples"";
+    case Column::SourceCode:
+        return ""Source Code"";
+    case Column::Location:
+        return ""Location"";
+    case Column::LineNumber:
+        return ""Line"";
+    default:
+        VERIFY_NOT_REACHED();
+        return {};
+    }
+}
+
+struct ColorPair {
+    Color background;
+    Color foreground;
+};
+
+static Optional<ColorPair> color_pair_for(SourceLineData const& line)
+{
+    if (line.percent == 0)
+        return {};
+
+    Color background = color_for_percent(line.percent);
+    Color foreground;
+    if (line.percent > 50)
+        foreground = Color::White;
+    else
+        foreground = Color::Black;
+    return ColorPair { background, foreground };
+}
+
+GUI::Variant SourceModel::data(GUI::ModelIndex const& index, GUI::ModelRole role) const
+{
+    auto const& line = m_source_lines[index.row()];
+
+    if (role == GUI::ModelRole::BackgroundColor) {
+        auto colors = color_pair_for(line);
+        if (!colors.has_value())
+            return {};
+        return colors.value().background;
+    }
+
+    if (role == GUI::ModelRole::ForegroundColor) {
+        auto colors = color_pair_for(line);
+        if (!colors.has_value())
+            return {};
+        return colors.value().foreground;
+    }
+
+    if (role == GUI::ModelRole::Font) {
+        if (index.column() == Column::SourceCode)
+            return Gfx::FontDatabase::default_fixed_width_font();
+        return {};
+    }
+
+    if (role == GUI::ModelRole::Display) {
+        if (index.column() == Column::SampleCount) {
+            if (m_profile.show_percentages())
+                return ((float)line.event_count / (float)m_node.event_count()) * 100.0f;
+            return line.event_count;
+        }
+
+        if (index.column() == Column::Location)
+            return line.location;
+
+        if (index.column() == Column::LineNumber)
+            return line.line_number;
+
+        if (index.column() == Column::SourceCode)
+            return line.source_code;
+
+        return {};
+    }
+    return {};
+}
+
+}
diff --git a/Userland/DevTools/Profiler/SourceModel.h b/Userland/DevTools/Profiler/SourceModel.h
new file mode 100644
index 000000000000..9e2fa08f9f1d
--- /dev/null
+++ b/Userland/DevTools/Profiler/SourceModel.h
@@ -0,0 +1,54 @@
+/*
+ * Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibGUI/Model.h>
+
+namespace Profiler {
+
+class Profile;
+class ProfileNode;
+
+struct SourceLineData {
+    u32 event_count { 0 };
+    float percent { 0 };
+    String location;
+    u32 line_number { 0 };
+    String source_code;
+};
+
+class SourceModel final : public GUI::Model {
+public:
+    static NonnullRefPtr<SourceModel> create(Profile& profile, ProfileNode& node)
+    {
+        return adopt_ref(*new SourceModel(profile, node));
+    }
+
+    enum Column {
+        SampleCount,
+        Location,
+        LineNumber,
+        SourceCode,
+        __Count
+    };
+
+    virtual int row_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override;
+    virtual int column_count(GUI::ModelIndex const& = GUI::ModelIndex()) const override { return Column::__Count; }
+    virtual String column_name(int) const override;
+    virtual GUI::Variant data(GUI::ModelIndex const&, GUI::ModelRole) const override;
+    virtual bool is_column_sortable(int) const override { return false; }
+
+private:
+    SourceModel(Profile&, ProfileNode&);
+
+    Profile& m_profile;
+    ProfileNode& m_node;
+
+    Vector<SourceLineData> m_source_lines;
+};
+
+}
diff --git a/Userland/DevTools/Profiler/main.cpp b/Userland/DevTools/Profiler/main.cpp
index 2e014d57660e..bb34effc9213 100644
--- a/Userland/DevTools/Profiler/main.cpp
+++ b/Userland/DevTools/Profiler/main.cpp
@@ -153,8 +153,21 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         }
     };
 
+    auto source_view = TRY(bottom_splitter->try_add<GUI::TableView>());
+    source_view->set_visible(false);
+
+    auto update_source_model = [&] {
+        if (source_view->is_visible() && !tree_view->selection().is_empty()) {
+            profile->set_source_index(tree_view->selection().first());
+            source_view->set_model(profile->source_model());
+        } else {
+            source_view->set_model(nullptr);
+        }
+    };
+
     tree_view->on_selection_change = [&] {
         update_disassembly_model();
+        update_source_model();
     };
 
     auto disassembly_action = GUI::Action::create_checkable(""Show &Disassembly"", { Mod_Ctrl, Key_D }, Gfx::Bitmap::try_load_from_file(""/res/icons/16x16/x86.png"").release_value_but_fixme_should_propagate_errors(), [&](auto& action) {
@@ -162,6 +175,11 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         update_disassembly_model();
     });
 
+    auto source_action = GUI::Action::create_checkable(""Show &Source"", { Mod_Ctrl, Key_S }, Gfx::Bitmap::try_load_from_file(""/res/icons/16x16/x86.png"").release_value_but_fixme_should_propagate_errors(), [&](auto& action) {
+        source_view->set_visible(action.is_checked());
+        update_source_model();
+    });
+
     auto samples_tab = TRY(tab_widget->try_add_tab<GUI::Widget>(""Samples""));
     samples_tab->set_layout<GUI::VerticalBoxLayout>();
     samples_tab->layout()->set_margins(4);
@@ -255,11 +273,13 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         profile->set_show_percentages(action.is_checked());
         tree_view->update();
         disassembly_view->update();
+        source_view->update();
     });
     percent_action->set_checked(false);
     TRY(view_menu->try_add_action(percent_action));
 
     TRY(view_menu->try_add_action(disassembly_action));
+    TRY(view_menu->try_add_action(source_action));
 
     auto help_menu = TRY(window->try_add_menu(""&Help""));
     TRY(help_menu->try_add_action(GUI::CommonActions::make_help_action([](auto&) {"
da7dbc116eafe03867c6aa9bd5fcfa4354ea90e3,2021-04-10 01:23:43,Andreas Kling,"libgui: Use ""Tray"" look & feel for the common locations frame :^)",False,"Use ""Tray"" look & feel for the common locations frame :^)",libgui,"diff --git a/Userland/Libraries/LibGUI/FilePicker.cpp b/Userland/Libraries/LibGUI/FilePicker.cpp
index 4ca510d4a4a3..c68dbf09e89c 100644
--- a/Userland/Libraries/LibGUI/FilePicker.cpp
+++ b/Userland/Libraries/LibGUI/FilePicker.cpp
@@ -223,9 +223,11 @@ FilePicker::FilePicker(Window* parent_window, Mode mode, const StringView& file_
     };
 
     auto& common_locations_frame = *widget.find_descendant_of_type_named<GUI::Frame>(""common_locations_frame"");
+    common_locations_frame.set_background_role(Gfx::ColorRole::Tray);
     auto add_common_location_button = [&](auto& name, String path) -> GUI::Button& {
         auto& button = common_locations_frame.add<GUI::Button>();
-        button.set_button_style(Gfx::ButtonStyle::CoolBar);
+        button.set_button_style(Gfx::ButtonStyle::Tray);
+        button.set_foreground_role(Gfx::ColorRole::TrayText);
         button.set_text_alignment(Gfx::TextAlignment::CenterLeft);
         button.set_text(move(name));
         button.set_icon(FileIconProvider::icon_for_path(path).bitmap_for_size(16));"
8bfb665b72430b3c20a34cd5f4e6519d6744fcd5,2021-09-12 05:10:56,Timothy Flynn,libjs: Convert DataView.prototype to be a PrototypeObject,False,Convert DataView.prototype to be a PrototypeObject,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/DataViewPrototype.cpp b/Userland/Libraries/LibJS/Runtime/DataViewPrototype.cpp
index 747200f0fc1a..5688c220056c 100644
--- a/Userland/Libraries/LibJS/Runtime/DataViewPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/DataViewPrototype.cpp
@@ -11,7 +11,7 @@
 namespace JS {
 
 DataViewPrototype::DataViewPrototype(GlobalObject& global_object)
-    : Object(*global_object.object_prototype())
+    : PrototypeObject(*global_object.object_prototype())
 {
 }
 
@@ -54,22 +54,12 @@ DataViewPrototype::~DataViewPrototype()
 {
 }
 
-static DataView* typed_this(VM& vm, GlobalObject& global_object)
-{
-    auto this_value = vm.this_value(global_object);
-    if (!this_value.is_object() || !is<DataView>(this_value.as_object())) {
-        vm.throw_exception<TypeError>(global_object, ErrorType::NotAnObjectOfType, vm.names.DataView);
-        return nullptr;
-    }
-    return static_cast<DataView*>(&this_value.as_object());
-}
-
 // 25.3.1.1 GetViewValue ( view, requestIndex, isLittleEndian, type ), https://tc39.es/ecma262/#sec-getviewvalue
 template<typename T>
 static Value get_view_value(GlobalObject& global_object, Value request_index, Value is_little_endian)
 {
     auto& vm = global_object.vm();
-    auto* view = typed_this(vm, global_object);
+    auto* view = DataViewPrototype::typed_this_value(global_object);
     if (!view)
         return {};
 
@@ -108,7 +98,7 @@ template<typename T>
 static Value set_view_value(GlobalObject& global_object, Value request_index, Value is_little_endian, Value value)
 {
     auto& vm = global_object.vm();
-    auto* view = typed_this(vm, global_object);
+    auto* view = DataViewPrototype::typed_this_value(global_object);
     if (!view)
         return {};
 
@@ -265,7 +255,7 @@ JS_DEFINE_NATIVE_FUNCTION(DataViewPrototype::set_uint_32)
 // 25.3.4.1 get DataView.prototype.buffer, https://tc39.es/ecma262/#sec-get-dataview.prototype.buffer
 JS_DEFINE_NATIVE_GETTER(DataViewPrototype::buffer_getter)
 {
-    auto* data_view = typed_this(vm, global_object);
+    auto* data_view = typed_this_value(global_object);
     if (!data_view)
         return {};
     return data_view->viewed_array_buffer();
@@ -274,7 +264,7 @@ JS_DEFINE_NATIVE_GETTER(DataViewPrototype::buffer_getter)
 // 25.3.4.2 get DataView.prototype.byteLength, https://tc39.es/ecma262/#sec-get-dataview.prototype.bytelength
 JS_DEFINE_NATIVE_GETTER(DataViewPrototype::byte_length_getter)
 {
-    auto* data_view = typed_this(vm, global_object);
+    auto* data_view = typed_this_value(global_object);
     if (!data_view)
         return {};
     if (data_view->viewed_array_buffer()->is_detached()) {
@@ -287,7 +277,7 @@ JS_DEFINE_NATIVE_GETTER(DataViewPrototype::byte_length_getter)
 // 25.3.4.3 get DataView.prototype.byteOffset, https://tc39.es/ecma262/#sec-get-dataview.prototype.byteoffset
 JS_DEFINE_NATIVE_GETTER(DataViewPrototype::byte_offset_getter)
 {
-    auto* data_view = typed_this(vm, global_object);
+    auto* data_view = typed_this_value(global_object);
     if (!data_view)
         return {};
     if (data_view->viewed_array_buffer()->is_detached()) {
diff --git a/Userland/Libraries/LibJS/Runtime/DataViewPrototype.h b/Userland/Libraries/LibJS/Runtime/DataViewPrototype.h
index 4a7444adf6db..839719c43ba7 100644
--- a/Userland/Libraries/LibJS/Runtime/DataViewPrototype.h
+++ b/Userland/Libraries/LibJS/Runtime/DataViewPrototype.h
@@ -7,11 +7,12 @@
 #pragma once
 
 #include <LibJS/Runtime/DataView.h>
+#include <LibJS/Runtime/PrototypeObject.h>
 
 namespace JS {
 
-class DataViewPrototype final : public Object {
-    JS_OBJECT(DataViewPrototype, Object);
+class DataViewPrototype final : public PrototypeObject<DataViewPrototype, DataView> {
+    JS_PROTOTYPE_OBJECT(DataViewPrototype, DataView, DataView);
 
 public:
     DataViewPrototype(GlobalObject&);"
24ee5a22024c7fbc9e58fbce4b9c8f202b1ef75a,2022-10-20 00:41:37,Linus Groh,webdriver: Move `GET /session/{session id}/window` impl into Session,False,Move `GET /session/{session id}/window` impl into Session,webdriver,"diff --git a/Userland/Services/WebDriver/Client.cpp b/Userland/Services/WebDriver/Client.cpp
index fe3844b1026c..92314bcfd890 100644
--- a/Userland/Services/WebDriver/Client.cpp
+++ b/Userland/Services/WebDriver/Client.cpp
@@ -533,13 +533,9 @@ ErrorOr<JsonValue, HttpError> Client::handle_get_window_handle(Vector<StringView
     dbgln_if(WEBDRIVER_DEBUG, ""Handling GET /session/<session_id>/window"");
     auto* session = TRY(find_session_with_id(parameters[0]));
 
-    // 1. If the current top-level browsing context is no longer open, return error with error code no such window.
-    auto current_window = session->get_window_object();
-    if (!current_window.has_value())
-        return HttpError { 404, ""no such window"", ""Window not found"" };
-
-    // 2. Return success with data being the window handle associated with the current top-level browsing context.
-    return make_json_value(session->current_window_handle());
+    // NOTE: Spec steps handled in Session::get_title().
+    auto result = TRY(session->get_window_handle());
+    return make_json_value(result);
 }
 
 // 11.2 Close Window, https://w3c.github.io/webdriver/#dfn-close-window
diff --git a/Userland/Services/WebDriver/Session.cpp b/Userland/Services/WebDriver/Session.cpp
index 52265574d5d0..ad059426edac 100644
--- a/Userland/Services/WebDriver/Session.cpp
+++ b/Userland/Services/WebDriver/Session.cpp
@@ -235,6 +235,18 @@ ErrorOr<JsonValue, HttpError> Session::get_title()
     return JsonValue(m_browser_connection->get_title());
 }
 
+// 11.1 Get Window Handle, https://w3c.github.io/webdriver/#get-window-handle
+ErrorOr<JsonValue, HttpError> Session::get_window_handle()
+{
+    // 1. If the current top-level browsing context is no longer open, return error with error code no such window.
+    auto current_window = get_window_object();
+    if (!current_window.has_value())
+        return HttpError { 404, ""no such window"", ""Window not found"" };
+
+    // 2. Return success with data being the window handle associated with the current top-level browsing context.
+    return m_current_window_handle;
+}
+
 // 11.2 Close Window, https://w3c.github.io/webdriver/#dfn-close-window
 ErrorOr<void, Variant<HttpError, Error>> Session::close_window()
 {
diff --git a/Userland/Services/WebDriver/Session.h b/Userland/Services/WebDriver/Session.h
index 3cf85cee4754..2f09319fbf9f 100644
--- a/Userland/Services/WebDriver/Session.h
+++ b/Userland/Services/WebDriver/Session.h
@@ -47,6 +47,7 @@ class Session {
     ErrorOr<JsonValue, HttpError> forward();
     ErrorOr<JsonValue, HttpError> refresh();
     ErrorOr<JsonValue, HttpError> get_title();
+    ErrorOr<JsonValue, HttpError> get_window_handle();
     ErrorOr<JsonValue, HttpError> find_element(JsonValue const& payload);
     ErrorOr<JsonValue, HttpError> find_elements(JsonValue const& payload);
     ErrorOr<JsonValue, HttpError> find_element_from_element(JsonValue const& payload, StringView parameter_element_id);"
c8b286084b8b794680fd364dd17572b2fb5d676a,2023-01-06 16:32:21,Andreas Kling,windowserver: Round menu item font sizes up when calculating height,False,Round menu item font sizes up when calculating height,windowserver,"diff --git a/Userland/Services/WindowServer/Menu.cpp b/Userland/Services/WindowServer/Menu.cpp
index 49646ef776bc..83048cab5cb2 100644
--- a/Userland/Services/WindowServer/Menu.cpp
+++ b/Userland/Services/WindowServer/Menu.cpp
@@ -95,7 +95,7 @@ int Menu::content_width() const
 
 int Menu::item_height() const
 {
-    return max(font().preferred_line_height(), s_item_icon_width + 2) + 4;
+    return max(static_cast<int>(ceilf(font().preferred_line_height())), s_item_icon_width + 2) + 4;
 }
 
 void Menu::redraw()"
c0d7f748edd86ea744f4dedc8a2bfd5b612d2812,2024-03-16 21:05:54,Andreas Kling,libweb: Avoid FlyString lookups when setting IDL interface prototypes,False,Avoid FlyString lookups when setting IDL interface prototypes,libweb,"diff --git a/Userland/Libraries/LibWeb/Animations/Animation.cpp b/Userland/Libraries/LibWeb/Animations/Animation.cpp
index a64b851ee400..f2dc5d3ad2f8 100644
--- a/Userland/Libraries/LibWeb/Animations/Animation.cpp
+++ b/Userland/Libraries/LibWeb/Animations/Animation.cpp
@@ -1331,7 +1331,7 @@ Animation::Animation(JS::Realm& realm)
 void Animation::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::AnimationPrototype>(realm, ""Animation""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Animation);
 }
 
 void Animation::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Animations/AnimationEffect.cpp b/Userland/Libraries/LibWeb/Animations/AnimationEffect.cpp
index 4d018785de91..5d0ea7115adf 100644
--- a/Userland/Libraries/LibWeb/Animations/AnimationEffect.cpp
+++ b/Userland/Libraries/LibWeb/Animations/AnimationEffect.cpp
@@ -604,7 +604,7 @@ AnimationEffect::AnimationEffect(JS::Realm& realm)
 void AnimationEffect::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::AnimationEffectPrototype>(realm, ""AnimationEffect""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(AnimationEffect);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/Animations/AnimationPlaybackEvent.cpp b/Userland/Libraries/LibWeb/Animations/AnimationPlaybackEvent.cpp
index 99c6994b62ec..38feec290d52 100644
--- a/Userland/Libraries/LibWeb/Animations/AnimationPlaybackEvent.cpp
+++ b/Userland/Libraries/LibWeb/Animations/AnimationPlaybackEvent.cpp
@@ -32,7 +32,7 @@ AnimationPlaybackEvent::AnimationPlaybackEvent(JS::Realm& realm, FlyString const
 void AnimationPlaybackEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::AnimationPlaybackEventPrototype>(realm, ""AnimationPlaybackEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(AnimationPlaybackEvent);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/Animations/AnimationTimeline.cpp b/Userland/Libraries/LibWeb/Animations/AnimationTimeline.cpp
index 2e419d72eff5..7bf4f001f959 100644
--- a/Userland/Libraries/LibWeb/Animations/AnimationTimeline.cpp
+++ b/Userland/Libraries/LibWeb/Animations/AnimationTimeline.cpp
@@ -57,7 +57,7 @@ void AnimationTimeline::finalize()
 void AnimationTimeline::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::AnimationTimelinePrototype>(realm, ""AnimationTimeline""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(AnimationTimeline);
 }
 
 void AnimationTimeline::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Animations/DocumentTimeline.cpp b/Userland/Libraries/LibWeb/Animations/DocumentTimeline.cpp
index 5f0bb816ee1d..08d51b5a9c70 100644
--- a/Userland/Libraries/LibWeb/Animations/DocumentTimeline.cpp
+++ b/Userland/Libraries/LibWeb/Animations/DocumentTimeline.cpp
@@ -77,7 +77,7 @@ DocumentTimeline::DocumentTimeline(JS::Realm& realm, DOM::Document& document, Hi
 void DocumentTimeline::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DocumentTimelinePrototype>(realm, ""DocumentTimeline""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DocumentTimeline);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/Animations/KeyframeEffect.cpp b/Userland/Libraries/LibWeb/Animations/KeyframeEffect.cpp
index 71a12cb2dbb2..55cb35d794c7 100644
--- a/Userland/Libraries/LibWeb/Animations/KeyframeEffect.cpp
+++ b/Userland/Libraries/LibWeb/Animations/KeyframeEffect.cpp
@@ -860,7 +860,7 @@ KeyframeEffect::KeyframeEffect(JS::Realm& realm)
 void KeyframeEffect::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::KeyframeEffectPrototype>(realm, ""KeyframeEffect""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(KeyframeEffect);
 }
 
 void KeyframeEffect::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Bindings/Intrinsics.h b/Userland/Libraries/LibWeb/Bindings/Intrinsics.h
index b4531b7c6ea5..8dfd13bd786b 100644
--- a/Userland/Libraries/LibWeb/Bindings/Intrinsics.h
+++ b/Userland/Libraries/LibWeb/Bindings/Intrinsics.h
@@ -15,6 +15,14 @@
 #include <LibJS/Runtime/VM.h>
 #include <LibWeb/Bindings/HostDefined.h>
 
+#define WEB_SET_PROTOTYPE_FOR_INTERFACE_WITH_CUSTOM_NAME(interface_class, interface_name)                  \
+    do {                                                                                                   \
+        static auto name = #interface_name##_fly_string;                                                   \
+        set_prototype(&Bindings::ensure_web_prototype<Bindings::interface_class##Prototype>(realm, name)); \
+    } while (0)
+
+#define WEB_SET_PROTOTYPE_FOR_INTERFACE(interface_name) WEB_SET_PROTOTYPE_FOR_INTERFACE_WITH_CUSTOM_NAME(interface_name, interface_name)
+
 namespace Web::Bindings {
 
 class Intrinsics final : public JS::Cell {
diff --git a/Userland/Libraries/LibWeb/CSS/AnimationEvent.cpp b/Userland/Libraries/LibWeb/CSS/AnimationEvent.cpp
index 6ed52600d5d3..aeadc1b694b9 100644
--- a/Userland/Libraries/LibWeb/CSS/AnimationEvent.cpp
+++ b/Userland/Libraries/LibWeb/CSS/AnimationEvent.cpp
@@ -30,7 +30,7 @@ AnimationEvent::AnimationEvent(JS::Realm& realm, FlyString const& type, Animatio
 void AnimationEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::AnimationEventPrototype>(realm, ""AnimationEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(AnimationEvent);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/CSS/CSSAnimation.cpp b/Userland/Libraries/LibWeb/CSS/CSSAnimation.cpp
index f8de7504b3af..f56afa98c859 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSAnimation.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSAnimation.cpp
@@ -73,7 +73,7 @@ CSSAnimation::CSSAnimation(JS::Realm& realm)
 void CSSAnimation::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSAnimationPrototype>(realm, ""CSSAnimation""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSAnimation);
 }
 
 void CSSAnimation::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/CSS/CSSConditionRule.cpp b/Userland/Libraries/LibWeb/CSS/CSSConditionRule.cpp
index 2a4f2576aaac..b926ffc521fb 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSConditionRule.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSConditionRule.cpp
@@ -31,7 +31,7 @@ void CSSConditionRule::for_each_effective_keyframes_at_rule(Function<void(CSSKey
 void CSSConditionRule::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSConditionRulePrototype>(realm, ""CSSConditionRule""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSConditionRule);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/CSS/CSSFontFaceRule.cpp b/Userland/Libraries/LibWeb/CSS/CSSFontFaceRule.cpp
index 75d46146ac06..a17284f77268 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSFontFaceRule.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSFontFaceRule.cpp
@@ -30,7 +30,7 @@ CSSFontFaceRule::CSSFontFaceRule(JS::Realm& realm, FontFace&& font_face)
 void CSSFontFaceRule::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSFontFaceRulePrototype>(realm, ""CSSFontFaceRule""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSFontFaceRule);
 }
 
 CSSStyleDeclaration* CSSFontFaceRule::style()
diff --git a/Userland/Libraries/LibWeb/CSS/CSSGroupingRule.cpp b/Userland/Libraries/LibWeb/CSS/CSSGroupingRule.cpp
index 886b5d915612..b0f36ff0f392 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSGroupingRule.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSGroupingRule.cpp
@@ -25,7 +25,7 @@ CSSGroupingRule::CSSGroupingRule(JS::Realm& realm, CSSRuleList& rules)
 void CSSGroupingRule::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSGroupingRulePrototype>(realm, ""CSSGroupingRule""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSGroupingRule);
 }
 
 void CSSGroupingRule::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/CSS/CSSImportRule.cpp b/Userland/Libraries/LibWeb/CSS/CSSImportRule.cpp
index f13e24fb1f95..6449393d5161 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSImportRule.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSImportRule.cpp
@@ -45,7 +45,7 @@ CSSImportRule::CSSImportRule(URL url, DOM::Document& document)
 void CSSImportRule::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSImportRulePrototype>(realm, ""CSSImportRule""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSImportRule);
 }
 
 void CSSImportRule::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/CSS/CSSKeyframeRule.cpp b/Userland/Libraries/LibWeb/CSS/CSSKeyframeRule.cpp
index 1c871c49d582..31583fe7003e 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSKeyframeRule.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSKeyframeRule.cpp
@@ -27,7 +27,7 @@ void CSSKeyframeRule::visit_edges(Visitor& visitor)
 void CSSKeyframeRule::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSKeyframeRulePrototype>(realm, ""CSSKeyframeRule""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSKeyframeRule);
 }
 
 String CSSKeyframeRule::serialized() const
diff --git a/Userland/Libraries/LibWeb/CSS/CSSKeyframesRule.cpp b/Userland/Libraries/LibWeb/CSS/CSSKeyframesRule.cpp
index 87d27963a825..c41dba48ae2a 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSKeyframesRule.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSKeyframesRule.cpp
@@ -27,7 +27,7 @@ void CSSKeyframesRule::visit_edges(Visitor& visitor)
 void CSSKeyframesRule::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSKeyframesRulePrototype>(realm, ""CSSKeyframesRule""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSKeyframesRule);
 }
 
 String CSSKeyframesRule::serialized() const
diff --git a/Userland/Libraries/LibWeb/CSS/CSSMediaRule.cpp b/Userland/Libraries/LibWeb/CSS/CSSMediaRule.cpp
index 90a7c4418dd1..5d82779c846e 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSMediaRule.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSMediaRule.cpp
@@ -28,7 +28,7 @@ CSSMediaRule::CSSMediaRule(JS::Realm& realm, MediaList& media, CSSRuleList& rule
 void CSSMediaRule::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSMediaRulePrototype>(realm, ""CSSMediaRule""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSMediaRule);
 }
 
 void CSSMediaRule::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/CSS/CSSNamespaceRule.cpp b/Userland/Libraries/LibWeb/CSS/CSSNamespaceRule.cpp
index f180736878fe..abb1ae03e7b8 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSNamespaceRule.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSNamespaceRule.cpp
@@ -31,7 +31,7 @@ JS::NonnullGCPtr<CSSNamespaceRule> CSSNamespaceRule::create(JS::Realm& realm, Op
 void CSSNamespaceRule::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSNamespaceRulePrototype>(realm, ""CSSNamespaceRule""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSNamespaceRule);
 }
 
 // https://www.w3.org/TR/cssom/#serialize-a-css-rule
diff --git a/Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp b/Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp
index b6a1d3fb0b8e..e6ddfccdfb7a 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp
@@ -42,7 +42,7 @@ JS::NonnullGCPtr<CSSRuleList> CSSRuleList::create_empty(JS::Realm& realm)
 void CSSRuleList::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSRuleListPrototype>(realm, ""CSSRuleList""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSRuleList);
 }
 
 void CSSRuleList::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.cpp b/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.cpp
index a844b889e651..eca0ba2a3bb2 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.cpp
@@ -28,7 +28,7 @@ CSSStyleDeclaration::CSSStyleDeclaration(JS::Realm& realm)
 void CSSStyleDeclaration::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSStyleDeclarationPrototype>(realm, ""CSSStyleDeclaration""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSStyleDeclaration);
 }
 
 JS::NonnullGCPtr<PropertyOwningCSSStyleDeclaration> PropertyOwningCSSStyleDeclaration::create(JS::Realm& realm, Vector<StyleProperty> properties, HashMap<FlyString, StyleProperty> custom_properties)
diff --git a/Userland/Libraries/LibWeb/CSS/CSSStyleRule.cpp b/Userland/Libraries/LibWeb/CSS/CSSStyleRule.cpp
index fe9dafc0fbec..c5fb5df6c3a5 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSStyleRule.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSStyleRule.cpp
@@ -29,7 +29,7 @@ CSSStyleRule::CSSStyleRule(JS::Realm& realm, Vector<NonnullRefPtr<Selector>>&& s
 void CSSStyleRule::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSStyleRulePrototype>(realm, ""CSSStyleRule""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSStyleRule);
 }
 
 void CSSStyleRule::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/CSS/CSSStyleSheet.cpp b/Userland/Libraries/LibWeb/CSS/CSSStyleSheet.cpp
index 70c8da6329b5..34a9c7850e67 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSStyleSheet.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSStyleSheet.cpp
@@ -111,7 +111,7 @@ CSSStyleSheet::CSSStyleSheet(JS::Realm& realm, CSSRuleList& rules, MediaList& me
 void CSSStyleSheet::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSStyleSheetPrototype>(realm, ""CSSStyleSheet""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSStyleSheet);
 }
 
 void CSSStyleSheet::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/CSS/CSSSupportsRule.cpp b/Userland/Libraries/LibWeb/CSS/CSSSupportsRule.cpp
index ed1bb01155a5..76a0426ce9cd 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSSupportsRule.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSSupportsRule.cpp
@@ -27,7 +27,7 @@ CSSSupportsRule::CSSSupportsRule(JS::Realm& realm, NonnullRefPtr<Supports>&& sup
 void CSSSupportsRule::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CSSSupportsRulePrototype>(realm, ""CSSSupportsRule""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CSSSupportsRule);
 }
 
 String CSSSupportsRule::condition_text() const
diff --git a/Userland/Libraries/LibWeb/CSS/MediaList.cpp b/Userland/Libraries/LibWeb/CSS/MediaList.cpp
index 48e3fcebd553..e811afa80d1d 100644
--- a/Userland/Libraries/LibWeb/CSS/MediaList.cpp
+++ b/Userland/Libraries/LibWeb/CSS/MediaList.cpp
@@ -30,7 +30,7 @@ MediaList::MediaList(JS::Realm& realm, Vector<NonnullRefPtr<MediaQuery>>&& media
 void MediaList::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::MediaListPrototype>(realm, ""MediaList""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(MediaList);
 }
 
 // https://www.w3.org/TR/cssom-1/#dom-medialist-mediatext
diff --git a/Userland/Libraries/LibWeb/CSS/MediaQueryList.cpp b/Userland/Libraries/LibWeb/CSS/MediaQueryList.cpp
index 3f891e014223..cb8b9de37df9 100644
--- a/Userland/Libraries/LibWeb/CSS/MediaQueryList.cpp
+++ b/Userland/Libraries/LibWeb/CSS/MediaQueryList.cpp
@@ -33,7 +33,7 @@ MediaQueryList::MediaQueryList(DOM::Document& document, Vector<NonnullRefPtr<Med
 void MediaQueryList::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::MediaQueryListPrototype>(realm, ""MediaQueryList""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(MediaQueryList);
 }
 
 void MediaQueryList::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/CSS/MediaQueryListEvent.cpp b/Userland/Libraries/LibWeb/CSS/MediaQueryListEvent.cpp
index c175a313f069..0bb697149dd5 100644
--- a/Userland/Libraries/LibWeb/CSS/MediaQueryListEvent.cpp
+++ b/Userland/Libraries/LibWeb/CSS/MediaQueryListEvent.cpp
@@ -29,7 +29,7 @@ MediaQueryListEvent::~MediaQueryListEvent() = default;
 void MediaQueryListEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::MediaQueryListEventPrototype>(realm, ""MediaQueryListEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(MediaQueryListEvent);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/CSS/Screen.cpp b/Userland/Libraries/LibWeb/CSS/Screen.cpp
index 8f8d3f4814d1..d78a35e87e10 100644
--- a/Userland/Libraries/LibWeb/CSS/Screen.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Screen.cpp
@@ -29,7 +29,7 @@ Screen::Screen(HTML::Window& window)
 void Screen::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ScreenPrototype>(realm, ""Screen""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Screen);
 }
 
 void Screen::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/CSS/StyleSheetList.cpp b/Userland/Libraries/LibWeb/CSS/StyleSheetList.cpp
index 012365d45fb6..ecab95e65069 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleSheetList.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleSheetList.cpp
@@ -80,7 +80,7 @@ StyleSheetList::StyleSheetList(DOM::Document& document)
 void StyleSheetList::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::StyleSheetListPrototype>(realm, ""StyleSheetList""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(StyleSheetList);
 }
 
 void StyleSheetList::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/CSS/VisualViewport.cpp b/Userland/Libraries/LibWeb/CSS/VisualViewport.cpp
index c4f2b02257c9..d33d1a866432 100644
--- a/Userland/Libraries/LibWeb/CSS/VisualViewport.cpp
+++ b/Userland/Libraries/LibWeb/CSS/VisualViewport.cpp
@@ -31,7 +31,7 @@ VisualViewport::VisualViewport(DOM::Document& document)
 void VisualViewport::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::VisualViewportPrototype>(realm, ""VisualViewport""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(VisualViewport);
 }
 
 void VisualViewport::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Clipboard/Clipboard.cpp b/Userland/Libraries/LibWeb/Clipboard/Clipboard.cpp
index 55da3cb9a439..bb90eceb349c 100644
--- a/Userland/Libraries/LibWeb/Clipboard/Clipboard.cpp
+++ b/Userland/Libraries/LibWeb/Clipboard/Clipboard.cpp
@@ -36,7 +36,7 @@ Clipboard::~Clipboard() = default;
 void Clipboard::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ClipboardPrototype>(realm, ""Clipboard""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Clipboard);
 }
 
 // https://w3c.github.io/clipboard-apis/#os-specific-well-known-format
diff --git a/Userland/Libraries/LibWeb/Crypto/Crypto.cpp b/Userland/Libraries/LibWeb/Crypto/Crypto.cpp
index 21a99a3f7ff4..ddb1fe1861d1 100644
--- a/Userland/Libraries/LibWeb/Crypto/Crypto.cpp
+++ b/Userland/Libraries/LibWeb/Crypto/Crypto.cpp
@@ -33,7 +33,7 @@ Crypto::~Crypto() = default;
 void Crypto::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CryptoPrototype>(realm, ""Crypto""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Crypto);
     m_subtle = SubtleCrypto::create(realm);
 }
 
diff --git a/Userland/Libraries/LibWeb/Crypto/CryptoKey.cpp b/Userland/Libraries/LibWeb/Crypto/CryptoKey.cpp
index 59212c4ef53d..d70919db0721 100644
--- a/Userland/Libraries/LibWeb/Crypto/CryptoKey.cpp
+++ b/Userland/Libraries/LibWeb/Crypto/CryptoKey.cpp
@@ -38,7 +38,7 @@ CryptoKey::~CryptoKey()
 void CryptoKey::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CryptoKeyPrototype>(realm, ""CryptoKey""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CryptoKey);
 }
 
 void CryptoKey::visit_edges(Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.cpp b/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
index 32f26d67ed85..fce5f418f817 100644
--- a/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
+++ b/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
@@ -44,7 +44,7 @@ SubtleCrypto::~SubtleCrypto() = default;
 void SubtleCrypto::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SubtleCryptoPrototype>(realm, ""SubtleCrypto""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SubtleCrypto);
 }
 
 // https://w3c.github.io/webcrypto/#dfn-normalize-an-algorithm
diff --git a/Userland/Libraries/LibWeb/DOM/AbortController.cpp b/Userland/Libraries/LibWeb/DOM/AbortController.cpp
index 324b4cb378f1..4b518e788f93 100644
--- a/Userland/Libraries/LibWeb/DOM/AbortController.cpp
+++ b/Userland/Libraries/LibWeb/DOM/AbortController.cpp
@@ -30,7 +30,7 @@ AbortController::~AbortController() = default;
 void AbortController::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::AbortControllerPrototype>(realm, ""AbortController""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(AbortController);
 }
 
 void AbortController::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOM/AbortSignal.cpp b/Userland/Libraries/LibWeb/DOM/AbortSignal.cpp
index 0b5df2fb26cb..caf638687e7f 100644
--- a/Userland/Libraries/LibWeb/DOM/AbortSignal.cpp
+++ b/Userland/Libraries/LibWeb/DOM/AbortSignal.cpp
@@ -30,7 +30,7 @@ AbortSignal::AbortSignal(JS::Realm& realm)
 void AbortSignal::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::AbortSignalPrototype>(realm, ""AbortSignal""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(AbortSignal);
 }
 
 // https://dom.spec.whatwg.org/#abortsignal-add
diff --git a/Userland/Libraries/LibWeb/DOM/AbstractRange.cpp b/Userland/Libraries/LibWeb/DOM/AbstractRange.cpp
index 9a99a7cc6272..03172f359a45 100644
--- a/Userland/Libraries/LibWeb/DOM/AbstractRange.cpp
+++ b/Userland/Libraries/LibWeb/DOM/AbstractRange.cpp
@@ -24,7 +24,7 @@ AbstractRange::~AbstractRange() = default;
 void AbstractRange::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::AbstractRangePrototype>(realm, ""AbstractRange""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(AbstractRange);
 }
 
 void AbstractRange::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOM/Attr.cpp b/Userland/Libraries/LibWeb/DOM/Attr.cpp
index 0c07d9e87629..9f778252fb67 100644
--- a/Userland/Libraries/LibWeb/DOM/Attr.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Attr.cpp
@@ -44,7 +44,7 @@ Attr::Attr(Document& document, QualifiedName qualified_name, String value, Eleme
 void Attr::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::AttrPrototype>(realm, ""Attr""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Attr);
 }
 
 void Attr::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOM/CDATASection.cpp b/Userland/Libraries/LibWeb/DOM/CDATASection.cpp
index c7b8491abf04..78051696d20c 100644
--- a/Userland/Libraries/LibWeb/DOM/CDATASection.cpp
+++ b/Userland/Libraries/LibWeb/DOM/CDATASection.cpp
@@ -21,7 +21,7 @@ CDATASection::~CDATASection() = default;
 void CDATASection::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CDATASectionPrototype>(realm, ""CDATASection""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CDATASection);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/DOM/CharacterData.cpp b/Userland/Libraries/LibWeb/DOM/CharacterData.cpp
index 2d3b8aaa7ac0..230c0f8363c5 100644
--- a/Userland/Libraries/LibWeb/DOM/CharacterData.cpp
+++ b/Userland/Libraries/LibWeb/DOM/CharacterData.cpp
@@ -25,7 +25,7 @@ CharacterData::CharacterData(Document& document, NodeType type, String const& da
 void CharacterData::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CharacterDataPrototype>(realm, ""CharacterData""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CharacterData);
 }
 
 // https://dom.spec.whatwg.org/#dom-characterdata-data
diff --git a/Userland/Libraries/LibWeb/DOM/Comment.cpp b/Userland/Libraries/LibWeb/DOM/Comment.cpp
index 63f174e0d5fa..af33e0e460d7 100644
--- a/Userland/Libraries/LibWeb/DOM/Comment.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Comment.cpp
@@ -28,7 +28,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<Comment>> Comment::construct_impl(JS::Realm
 void Comment::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CommentPrototype>(realm, ""Comment""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Comment);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/DOM/CustomEvent.cpp b/Userland/Libraries/LibWeb/DOM/CustomEvent.cpp
index e22480f24a08..1bdfede699d3 100644
--- a/Userland/Libraries/LibWeb/DOM/CustomEvent.cpp
+++ b/Userland/Libraries/LibWeb/DOM/CustomEvent.cpp
@@ -34,7 +34,7 @@ CustomEvent::~CustomEvent() = default;
 void CustomEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CustomEventPrototype>(realm, ""CustomEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CustomEvent);
 }
 
 void CustomEvent::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOM/DOMImplementation.cpp b/Userland/Libraries/LibWeb/DOM/DOMImplementation.cpp
index 7cbeca47473d..a6a05212801f 100644
--- a/Userland/Libraries/LibWeb/DOM/DOMImplementation.cpp
+++ b/Userland/Libraries/LibWeb/DOM/DOMImplementation.cpp
@@ -37,7 +37,7 @@ DOMImplementation::~DOMImplementation() = default;
 void DOMImplementation::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMImplementationPrototype>(realm, ""DOMImplementation""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DOMImplementation);
 }
 
 void DOMImplementation::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOM/DOMTokenList.cpp b/Userland/Libraries/LibWeb/DOM/DOMTokenList.cpp
index aa4d9351e8e0..fbaf9e101e9f 100644
--- a/Userland/Libraries/LibWeb/DOM/DOMTokenList.cpp
+++ b/Userland/Libraries/LibWeb/DOM/DOMTokenList.cpp
@@ -74,7 +74,7 @@ DOMTokenList::DOMTokenList(Element& associated_element, FlyString associated_att
 void DOMTokenList::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMTokenListPrototype>(realm, ""DOMTokenList""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DOMTokenList);
 }
 
 void DOMTokenList::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOM/Document.cpp b/Userland/Libraries/LibWeb/DOM/Document.cpp
index 6bb5342d1f8f..6af8fe3eccb8 100644
--- a/Userland/Libraries/LibWeb/DOM/Document.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Document.cpp
@@ -374,7 +374,7 @@ Document::~Document()
 void Document::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DocumentPrototype>(realm, ""Document""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Document);
 
     m_selection = heap().allocate<Selection::Selection>(realm, realm, *this);
 
diff --git a/Userland/Libraries/LibWeb/DOM/DocumentFragment.cpp b/Userland/Libraries/LibWeb/DOM/DocumentFragment.cpp
index 58a0f1754a2a..085c9e34a8c1 100644
--- a/Userland/Libraries/LibWeb/DOM/DocumentFragment.cpp
+++ b/Userland/Libraries/LibWeb/DOM/DocumentFragment.cpp
@@ -19,7 +19,7 @@ DocumentFragment::DocumentFragment(Document& document)
 void DocumentFragment::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DocumentFragmentPrototype>(realm, ""DocumentFragment""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DocumentFragment);
 }
 
 void DocumentFragment::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOM/DocumentType.cpp b/Userland/Libraries/LibWeb/DOM/DocumentType.cpp
index 925f48d3b6ff..834cd27761bf 100644
--- a/Userland/Libraries/LibWeb/DOM/DocumentType.cpp
+++ b/Userland/Libraries/LibWeb/DOM/DocumentType.cpp
@@ -24,7 +24,7 @@ DocumentType::DocumentType(Document& document)
 void DocumentType::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DocumentTypePrototype>(realm, ""DocumentType""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DocumentType);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/DOM/Element.cpp b/Userland/Libraries/LibWeb/DOM/Element.cpp
index 1fe2e8132da3..857bde12c453 100644
--- a/Userland/Libraries/LibWeb/DOM/Element.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Element.cpp
@@ -82,7 +82,7 @@ Element::~Element() = default;
 void Element::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ElementPrototype>(realm, ""Element""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Element);
 
     m_attributes = NamedNodeMap::create(*this);
 }
diff --git a/Userland/Libraries/LibWeb/DOM/Event.cpp b/Userland/Libraries/LibWeb/DOM/Event.cpp
index 4a13e479f734..192c54df1423 100644
--- a/Userland/Libraries/LibWeb/DOM/Event.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Event.cpp
@@ -46,7 +46,7 @@ Event::Event(JS::Realm& realm, FlyString const& type, EventInit const& event_ini
 void Event::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::EventPrototype>(realm, ""Event""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Event);
 }
 
 void Event::visit_edges(Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOM/EventTarget.cpp b/Userland/Libraries/LibWeb/DOM/EventTarget.cpp
index 1f44b67a486a..6173efd76069 100644
--- a/Userland/Libraries/LibWeb/DOM/EventTarget.cpp
+++ b/Userland/Libraries/LibWeb/DOM/EventTarget.cpp
@@ -59,7 +59,7 @@ void EventTarget::initialize(JS::Realm& realm)
     // FIXME: We can't do this for HTML::Window or HTML::WorkerGlobalScope, as this will run when creating the initial global object.
     //        During this time, the ESO is not setup, so it will cause a nullptr dereference in host_defined_intrinsics.
     if (!is<HTML::WindowOrWorkerGlobalScopeMixin>(this))
-        set_prototype(&Bindings::ensure_web_prototype<Bindings::EventTargetPrototype>(realm, ""EventTarget""_fly_string));
+        WEB_SET_PROTOTYPE_FOR_INTERFACE(EventTarget);
 }
 
 void EventTarget::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOM/HTMLCollection.cpp b/Userland/Libraries/LibWeb/DOM/HTMLCollection.cpp
index e508db036489..b899f20c60c7 100644
--- a/Userland/Libraries/LibWeb/DOM/HTMLCollection.cpp
+++ b/Userland/Libraries/LibWeb/DOM/HTMLCollection.cpp
@@ -38,7 +38,7 @@ HTMLCollection::~HTMLCollection() = default;
 void HTMLCollection::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLCollectionPrototype>(realm, ""HTMLCollection""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLCollection);
 }
 
 void HTMLCollection::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOM/HTMLFormControlsCollection.cpp b/Userland/Libraries/LibWeb/DOM/HTMLFormControlsCollection.cpp
index c327f996b6db..86db7f9d0d29 100644
--- a/Userland/Libraries/LibWeb/DOM/HTMLFormControlsCollection.cpp
+++ b/Userland/Libraries/LibWeb/DOM/HTMLFormControlsCollection.cpp
@@ -29,7 +29,7 @@ HTMLFormControlsCollection::~HTMLFormControlsCollection() = default;
 void HTMLFormControlsCollection::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLFormControlsCollectionPrototype>(realm, ""HTMLFormControlsCollection""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLFormControlsCollection);
 }
 
 // https://html.spec.whatwg.org/multipage/common-dom-interfaces.html#dom-htmlformcontrolscollection-nameditem
diff --git a/Userland/Libraries/LibWeb/DOM/MutationObserver.cpp b/Userland/Libraries/LibWeb/DOM/MutationObserver.cpp
index db69ea2256ea..b1bffc92ade9 100644
--- a/Userland/Libraries/LibWeb/DOM/MutationObserver.cpp
+++ b/Userland/Libraries/LibWeb/DOM/MutationObserver.cpp
@@ -42,7 +42,7 @@ MutationObserver::~MutationObserver()
 void MutationObserver::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::MutationObserverPrototype>(realm, ""MutationObserver""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(MutationObserver);
 }
 
 void MutationObserver::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOM/MutationRecord.cpp b/Userland/Libraries/LibWeb/DOM/MutationRecord.cpp
index 3c8c3b7f0f0a..261856f6bd19 100644
--- a/Userland/Libraries/LibWeb/DOM/MutationRecord.cpp
+++ b/Userland/Libraries/LibWeb/DOM/MutationRecord.cpp
@@ -38,7 +38,7 @@ MutationRecord::~MutationRecord() = default;
 void MutationRecord::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::MutationRecordPrototype>(realm, ""MutationRecord""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(MutationRecord);
 }
 
 void MutationRecord::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOM/NamedNodeMap.cpp b/Userland/Libraries/LibWeb/DOM/NamedNodeMap.cpp
index 581427f23c3a..e95f2c967d1c 100644
--- a/Userland/Libraries/LibWeb/DOM/NamedNodeMap.cpp
+++ b/Userland/Libraries/LibWeb/DOM/NamedNodeMap.cpp
@@ -36,7 +36,7 @@ NamedNodeMap::NamedNodeMap(Element& element)
 void NamedNodeMap::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::NamedNodeMapPrototype>(realm, ""NamedNodeMap""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(NamedNodeMap);
 }
 
 void NamedNodeMap::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOM/NodeIterator.cpp b/Userland/Libraries/LibWeb/DOM/NodeIterator.cpp
index 220087ae5ce0..fe3f6753f9a3 100644
--- a/Userland/Libraries/LibWeb/DOM/NodeIterator.cpp
+++ b/Userland/Libraries/LibWeb/DOM/NodeIterator.cpp
@@ -26,7 +26,7 @@ NodeIterator::~NodeIterator() = default;
 void NodeIterator::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::NodeIteratorPrototype>(realm, ""NodeIterator""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(NodeIterator);
 }
 
 void NodeIterator::finalize()
diff --git a/Userland/Libraries/LibWeb/DOM/NodeList.cpp b/Userland/Libraries/LibWeb/DOM/NodeList.cpp
index 899cecd5aa71..ce2ad6addadd 100644
--- a/Userland/Libraries/LibWeb/DOM/NodeList.cpp
+++ b/Userland/Libraries/LibWeb/DOM/NodeList.cpp
@@ -21,7 +21,7 @@ NodeList::~NodeList() = default;
 void NodeList::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::NodeListPrototype>(realm, ""NodeList""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(NodeList);
 }
 
 WebIDL::ExceptionOr<JS::Value> NodeList::item_value(size_t index) const
diff --git a/Userland/Libraries/LibWeb/DOM/ProcessingInstruction.cpp b/Userland/Libraries/LibWeb/DOM/ProcessingInstruction.cpp
index 64da6f890778..5a662cd88640 100644
--- a/Userland/Libraries/LibWeb/DOM/ProcessingInstruction.cpp
+++ b/Userland/Libraries/LibWeb/DOM/ProcessingInstruction.cpp
@@ -22,7 +22,7 @@ ProcessingInstruction::ProcessingInstruction(Document& document, String const& d
 void ProcessingInstruction::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ProcessingInstructionPrototype>(realm, ""ProcessingInstruction""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ProcessingInstruction);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/DOM/RadioNodeList.cpp b/Userland/Libraries/LibWeb/DOM/RadioNodeList.cpp
index 24b563dab5a0..03a09d16157e 100644
--- a/Userland/Libraries/LibWeb/DOM/RadioNodeList.cpp
+++ b/Userland/Libraries/LibWeb/DOM/RadioNodeList.cpp
@@ -29,7 +29,7 @@ RadioNodeList::~RadioNodeList() = default;
 void RadioNodeList::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::RadioNodeListPrototype>(realm, ""RadioNodeList""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(RadioNodeList);
 }
 
 static HTML::HTMLInputElement const* radio_button(Node const& node)
diff --git a/Userland/Libraries/LibWeb/DOM/Range.cpp b/Userland/Libraries/LibWeb/DOM/Range.cpp
index ef13773e1f3c..fdfd78e688b4 100644
--- a/Userland/Libraries/LibWeb/DOM/Range.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Range.cpp
@@ -78,7 +78,7 @@ Range::~Range()
 void Range::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::RangePrototype>(realm, ""Range""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Range);
 }
 
 void Range::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOM/ShadowRoot.cpp b/Userland/Libraries/LibWeb/DOM/ShadowRoot.cpp
index 9de779f3669a..222d03a76efb 100644
--- a/Userland/Libraries/LibWeb/DOM/ShadowRoot.cpp
+++ b/Userland/Libraries/LibWeb/DOM/ShadowRoot.cpp
@@ -32,7 +32,7 @@ void ShadowRoot::finalize()
 void ShadowRoot::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ShadowRootPrototype>(realm, ""ShadowRoot""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ShadowRoot);
 }
 
 // https://dom.spec.whatwg.org/#ref-for-get-the-parent%E2%91%A6
diff --git a/Userland/Libraries/LibWeb/DOM/StaticRange.cpp b/Userland/Libraries/LibWeb/DOM/StaticRange.cpp
index bd113c1a9b90..ff9c5d3f4dd5 100644
--- a/Userland/Libraries/LibWeb/DOM/StaticRange.cpp
+++ b/Userland/Libraries/LibWeb/DOM/StaticRange.cpp
@@ -40,7 +40,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<StaticRange>> StaticRange::construct_impl(J
 void StaticRange::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::StaticRangePrototype>(realm, ""StaticRange""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(StaticRange);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/DOM/Text.cpp b/Userland/Libraries/LibWeb/DOM/Text.cpp
index 739ab63e69f8..b9a6921acc88 100644
--- a/Userland/Libraries/LibWeb/DOM/Text.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Text.cpp
@@ -28,7 +28,7 @@ Text::Text(Document& document, NodeType type, String const& data)
 void Text::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::TextPrototype>(realm, ""Text""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Text);
 }
 
 void Text::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOM/TreeWalker.cpp b/Userland/Libraries/LibWeb/DOM/TreeWalker.cpp
index 00d58b69f1c1..9aff7a8f1827 100644
--- a/Userland/Libraries/LibWeb/DOM/TreeWalker.cpp
+++ b/Userland/Libraries/LibWeb/DOM/TreeWalker.cpp
@@ -27,7 +27,7 @@ TreeWalker::~TreeWalker() = default;
 void TreeWalker::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::TreeWalkerPrototype>(realm, ""TreeWalker""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(TreeWalker);
 }
 
 void TreeWalker::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOM/XMLDocument.cpp b/Userland/Libraries/LibWeb/DOM/XMLDocument.cpp
index 13804e030e2e..4c58d3d8d4c7 100644
--- a/Userland/Libraries/LibWeb/DOM/XMLDocument.cpp
+++ b/Userland/Libraries/LibWeb/DOM/XMLDocument.cpp
@@ -24,7 +24,7 @@ XMLDocument::XMLDocument(JS::Realm& realm, URL const& url)
 void XMLDocument::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::XMLDocumentPrototype>(realm, ""XMLDocument""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(XMLDocument);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/DOMParsing/XMLSerializer.cpp b/Userland/Libraries/LibWeb/DOMParsing/XMLSerializer.cpp
index ea076a784877..95510129a667 100644
--- a/Userland/Libraries/LibWeb/DOMParsing/XMLSerializer.cpp
+++ b/Userland/Libraries/LibWeb/DOMParsing/XMLSerializer.cpp
@@ -40,7 +40,7 @@ XMLSerializer::~XMLSerializer() = default;
 void XMLSerializer::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::XMLSerializerPrototype>(realm, ""XMLSerializer""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(XMLSerializer);
 }
 
 // https://w3c.github.io/DOM-Parsing/#dom-xmlserializer-serializetostring
diff --git a/Userland/Libraries/LibWeb/DOMURL/DOMURL.cpp b/Userland/Libraries/LibWeb/DOMURL/DOMURL.cpp
index d6d5969ebb29..099c104431c6 100644
--- a/Userland/Libraries/LibWeb/DOMURL/DOMURL.cpp
+++ b/Userland/Libraries/LibWeb/DOMURL/DOMURL.cpp
@@ -87,7 +87,7 @@ DOMURL::~DOMURL() = default;
 void DOMURL::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMURLPrototype>(realm, ""URL""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE_WITH_CUSTOM_NAME(DOMURL, URL);
 }
 
 void DOMURL::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOMURL/URLSearchParams.cpp b/Userland/Libraries/LibWeb/DOMURL/URLSearchParams.cpp
index 581aab762851..4ce11ff24248 100644
--- a/Userland/Libraries/LibWeb/DOMURL/URLSearchParams.cpp
+++ b/Userland/Libraries/LibWeb/DOMURL/URLSearchParams.cpp
@@ -30,7 +30,7 @@ URLSearchParams::~URLSearchParams() = default;
 void URLSearchParams::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::URLSearchParamsPrototype>(realm, ""URLSearchParams""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(URLSearchParams);
 }
 
 void URLSearchParams::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/DOMURL/URLSearchParamsIterator.cpp b/Userland/Libraries/LibWeb/DOMURL/URLSearchParamsIterator.cpp
index 7f48f4dd3fe0..b2f03fa7d9fe 100644
--- a/Userland/Libraries/LibWeb/DOMURL/URLSearchParamsIterator.cpp
+++ b/Userland/Libraries/LibWeb/DOMURL/URLSearchParamsIterator.cpp
@@ -42,7 +42,7 @@ URLSearchParamsIterator::~URLSearchParamsIterator() = default;
 void URLSearchParamsIterator::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::URLSearchParamsIteratorPrototype>(realm, ""URLSearchParamsIterator""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(URLSearchParamsIterator);
 }
 
 void URLSearchParamsIterator::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Encoding/TextDecoder.cpp b/Userland/Libraries/LibWeb/Encoding/TextDecoder.cpp
index 0166fa7407f4..f8ddc655b6fd 100644
--- a/Userland/Libraries/LibWeb/Encoding/TextDecoder.cpp
+++ b/Userland/Libraries/LibWeb/Encoding/TextDecoder.cpp
@@ -41,7 +41,7 @@ TextDecoder::~TextDecoder() = default;
 void TextDecoder::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::TextDecoderPrototype>(realm, ""TextDecoder""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(TextDecoder);
 }
 
 // https://encoding.spec.whatwg.org/#dom-textdecoder-decode
diff --git a/Userland/Libraries/LibWeb/Encoding/TextEncoder.cpp b/Userland/Libraries/LibWeb/Encoding/TextEncoder.cpp
index b2c4f8d84319..731f3ca1f93b 100644
--- a/Userland/Libraries/LibWeb/Encoding/TextEncoder.cpp
+++ b/Userland/Libraries/LibWeb/Encoding/TextEncoder.cpp
@@ -28,7 +28,7 @@ TextEncoder::~TextEncoder() = default;
 void TextEncoder::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::TextEncoderPrototype>(realm, ""TextEncoder""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(TextEncoder);
 }
 
 // https://encoding.spec.whatwg.org/#dom-textencoder-encode
diff --git a/Userland/Libraries/LibWeb/Fetch/Headers.cpp b/Userland/Libraries/LibWeb/Fetch/Headers.cpp
index 011c9bbe952c..fd66ed5d3ffb 100644
--- a/Userland/Libraries/LibWeb/Fetch/Headers.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/Headers.cpp
@@ -42,7 +42,7 @@ Headers::~Headers() = default;
 void Headers::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HeadersPrototype>(realm, ""Headers""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Headers);
 }
 
 void Headers::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Fetch/HeadersIterator.cpp b/Userland/Libraries/LibWeb/Fetch/HeadersIterator.cpp
index d0330b2cfe59..cc5b978c5d96 100644
--- a/Userland/Libraries/LibWeb/Fetch/HeadersIterator.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/HeadersIterator.cpp
@@ -42,7 +42,7 @@ HeadersIterator::~HeadersIterator() = default;
 void HeadersIterator::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HeadersIteratorPrototype>(realm, ""HeadersIterator""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HeadersIterator);
 }
 
 void HeadersIterator::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Fetch/Request.cpp b/Userland/Libraries/LibWeb/Fetch/Request.cpp
index c652a4e9480a..ef9dd3e9a61d 100644
--- a/Userland/Libraries/LibWeb/Fetch/Request.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/Request.cpp
@@ -34,7 +34,7 @@ Request::~Request() = default;
 void Request::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::RequestPrototype>(realm, ""Request""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Request);
 }
 
 void Request::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Fetch/Response.cpp b/Userland/Libraries/LibWeb/Fetch/Response.cpp
index 80c80681b9e6..a86beae7603f 100644
--- a/Userland/Libraries/LibWeb/Fetch/Response.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/Response.cpp
@@ -31,7 +31,7 @@ Response::~Response() = default;
 void Response::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ResponsePrototype>(realm, ""Response""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Response);
 }
 
 void Response::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/FileAPI/Blob.cpp b/Userland/Libraries/LibWeb/FileAPI/Blob.cpp
index 4dabe0385e0f..f13c649f9584 100644
--- a/Userland/Libraries/LibWeb/FileAPI/Blob.cpp
+++ b/Userland/Libraries/LibWeb/FileAPI/Blob.cpp
@@ -146,7 +146,7 @@ Blob::~Blob() = default;
 void Blob::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::BlobPrototype>(realm, ""Blob""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Blob);
 }
 
 WebIDL::ExceptionOr<void> Blob::serialization_steps(HTML::SerializationRecord& record, bool)
diff --git a/Userland/Libraries/LibWeb/FileAPI/File.cpp b/Userland/Libraries/LibWeb/FileAPI/File.cpp
index 5e882789cf26..507f5e47a08a 100644
--- a/Userland/Libraries/LibWeb/FileAPI/File.cpp
+++ b/Userland/Libraries/LibWeb/FileAPI/File.cpp
@@ -29,7 +29,7 @@ File::File(JS::Realm& realm)
 void File::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::FilePrototype>(realm, ""File""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(File);
 }
 
 File::~File() = default;
diff --git a/Userland/Libraries/LibWeb/FileAPI/FileList.cpp b/Userland/Libraries/LibWeb/FileAPI/FileList.cpp
index 47fc192d9872..50f529ff377a 100644
--- a/Userland/Libraries/LibWeb/FileAPI/FileList.cpp
+++ b/Userland/Libraries/LibWeb/FileAPI/FileList.cpp
@@ -30,7 +30,7 @@ FileList::~FileList() = default;
 void FileList::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::FileListPrototype>(realm, ""FileList""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(FileList);
 }
 
 // https://w3c.github.io/FileAPI/#dfn-item
diff --git a/Userland/Libraries/LibWeb/FileAPI/FileReader.cpp b/Userland/Libraries/LibWeb/FileAPI/FileReader.cpp
index e52a842d7696..a939beee3e8b 100644
--- a/Userland/Libraries/LibWeb/FileAPI/FileReader.cpp
+++ b/Userland/Libraries/LibWeb/FileAPI/FileReader.cpp
@@ -42,7 +42,7 @@ FileReader::FileReader(JS::Realm& realm)
 void FileReader::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::FileReaderPrototype>(realm, ""FileReader""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(FileReader);
 }
 
 void FileReader::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMMatrix.cpp b/Userland/Libraries/LibWeb/Geometry/DOMMatrix.cpp
index c1c4c599e340..b974f5ee1000 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMMatrix.cpp
+++ b/Userland/Libraries/LibWeb/Geometry/DOMMatrix.cpp
@@ -138,7 +138,7 @@ DOMMatrix::~DOMMatrix() = default;
 void DOMMatrix::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMMatrixPrototype>(realm, ""DOMMatrix""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DOMMatrix);
 }
 
 // https://drafts.fxtf.org/geometry/#dom-dommatrix-frommatrix
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.cpp b/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.cpp
index 6dcc89c1e8e1..90aee5e71478 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.cpp
+++ b/Userland/Libraries/LibWeb/Geometry/DOMMatrixReadOnly.cpp
@@ -139,7 +139,7 @@ DOMMatrixReadOnly::~DOMMatrixReadOnly() = default;
 void DOMMatrixReadOnly::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMMatrixReadOnlyPrototype>(realm, ""DOMMatrixReadOnly""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DOMMatrixReadOnly);
 }
 
 // https://drafts.fxtf.org/geometry/#create-a-2d-matrix
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMPoint.cpp b/Userland/Libraries/LibWeb/Geometry/DOMPoint.cpp
index fb30785437ee..c77c2eaf906a 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMPoint.cpp
+++ b/Userland/Libraries/LibWeb/Geometry/DOMPoint.cpp
@@ -34,7 +34,7 @@ DOMPoint::~DOMPoint() = default;
 void DOMPoint::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMPointPrototype>(realm, ""DOMPoint""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DOMPoint);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMPointReadOnly.cpp b/Userland/Libraries/LibWeb/Geometry/DOMPointReadOnly.cpp
index b6db2e5cc659..035b4ef28350 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMPointReadOnly.cpp
+++ b/Userland/Libraries/LibWeb/Geometry/DOMPointReadOnly.cpp
@@ -50,7 +50,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<DOMPoint>> DOMPointReadOnly::matrix_transfo
 void DOMPointReadOnly::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMPointReadOnlyPrototype>(realm, ""DOMPointReadOnly""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DOMPointReadOnly);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMQuad.cpp b/Userland/Libraries/LibWeb/Geometry/DOMQuad.cpp
index 09aa32472b61..1cc24aea643a 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMQuad.cpp
+++ b/Userland/Libraries/LibWeb/Geometry/DOMQuad.cpp
@@ -87,7 +87,7 @@ JS::NonnullGCPtr<DOMRect> DOMQuad::get_bounds() const
 void DOMQuad::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMQuadPrototype>(realm, ""DOMQuad""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DOMQuad);
 }
 
 void DOMQuad::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMRect.cpp b/Userland/Libraries/LibWeb/Geometry/DOMRect.cpp
index bfd627e41482..53be04b73c2a 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMRect.cpp
+++ b/Userland/Libraries/LibWeb/Geometry/DOMRect.cpp
@@ -39,7 +39,7 @@ DOMRect::~DOMRect() = default;
 void DOMRect::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMRectPrototype>(realm, ""DOMRect""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DOMRect);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMRectList.cpp b/Userland/Libraries/LibWeb/Geometry/DOMRectList.cpp
index c3423b18eaf0..28a46fdc6e0b 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMRectList.cpp
+++ b/Userland/Libraries/LibWeb/Geometry/DOMRectList.cpp
@@ -34,7 +34,7 @@ DOMRectList::~DOMRectList() = default;
 void DOMRectList::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMRectListPrototype>(realm, ""DOMRectList""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DOMRectList);
 }
 
 void DOMRectList::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Geometry/DOMRectReadOnly.cpp b/Userland/Libraries/LibWeb/Geometry/DOMRectReadOnly.cpp
index 09d06658417d..5bc74203274d 100644
--- a/Userland/Libraries/LibWeb/Geometry/DOMRectReadOnly.cpp
+++ b/Userland/Libraries/LibWeb/Geometry/DOMRectReadOnly.cpp
@@ -35,7 +35,7 @@ DOMRectReadOnly::~DOMRectReadOnly() = default;
 void DOMRectReadOnly::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMRectReadOnlyPrototype>(realm, ""DOMRectReadOnly""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DOMRectReadOnly);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/AudioTrack.cpp b/Userland/Libraries/LibWeb/HTML/AudioTrack.cpp
index dce51667c8b9..6ec2a531f50e 100644
--- a/Userland/Libraries/LibWeb/HTML/AudioTrack.cpp
+++ b/Userland/Libraries/LibWeb/HTML/AudioTrack.cpp
@@ -50,7 +50,7 @@ AudioTrack::~AudioTrack()
 void AudioTrack::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::AudioTrackPrototype>(realm, ""AudioTrack""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(AudioTrack);
 
     auto id = s_audio_track_id_allocator.allocate();
     m_id = MUST(String::number(id));
diff --git a/Userland/Libraries/LibWeb/HTML/AudioTrackList.cpp b/Userland/Libraries/LibWeb/HTML/AudioTrackList.cpp
index 218eff9b7304..2748a3f8062f 100644
--- a/Userland/Libraries/LibWeb/HTML/AudioTrackList.cpp
+++ b/Userland/Libraries/LibWeb/HTML/AudioTrackList.cpp
@@ -24,7 +24,7 @@ AudioTrackList::AudioTrackList(JS::Realm& realm)
 void AudioTrackList::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::AudioTrackListPrototype>(realm, ""AudioTrackList""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(AudioTrackList);
 }
 
 // https://html.spec.whatwg.org/multipage/media.html#dom-tracklist-item
diff --git a/Userland/Libraries/LibWeb/HTML/CanvasGradient.cpp b/Userland/Libraries/LibWeb/HTML/CanvasGradient.cpp
index 67d4e5b4868c..2819fc09d31a 100644
--- a/Userland/Libraries/LibWeb/HTML/CanvasGradient.cpp
+++ b/Userland/Libraries/LibWeb/HTML/CanvasGradient.cpp
@@ -52,7 +52,7 @@ CanvasGradient::~CanvasGradient() = default;
 void CanvasGradient::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CanvasGradientPrototype>(realm, ""CanvasGradient""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CanvasGradient);
 }
 
 // https://html.spec.whatwg.org/multipage/canvas.html#dom-canvasgradient-addcolorstop
diff --git a/Userland/Libraries/LibWeb/HTML/CanvasPattern.cpp b/Userland/Libraries/LibWeb/HTML/CanvasPattern.cpp
index 72bc546c21b6..c36fd92fc39a 100644
--- a/Userland/Libraries/LibWeb/HTML/CanvasPattern.cpp
+++ b/Userland/Libraries/LibWeb/HTML/CanvasPattern.cpp
@@ -138,7 +138,7 @@ WebIDL::ExceptionOr<JS::GCPtr<CanvasPattern>> CanvasPattern::create(JS::Realm& r
 void CanvasPattern::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CanvasPatternPrototype>(realm, ""CanvasPattern""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CanvasPattern);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/CloseEvent.cpp b/Userland/Libraries/LibWeb/HTML/CloseEvent.cpp
index bfea23eab0ea..b0b46ae03f21 100644
--- a/Userland/Libraries/LibWeb/HTML/CloseEvent.cpp
+++ b/Userland/Libraries/LibWeb/HTML/CloseEvent.cpp
@@ -34,7 +34,7 @@ CloseEvent::~CloseEvent() = default;
 void CloseEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CloseEventPrototype>(realm, ""CloseEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CloseEvent);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/CustomElements/CustomElementRegistry.cpp b/Userland/Libraries/LibWeb/HTML/CustomElements/CustomElementRegistry.cpp
index 614ad80b6234..06d232bfbe6a 100644
--- a/Userland/Libraries/LibWeb/HTML/CustomElements/CustomElementRegistry.cpp
+++ b/Userland/Libraries/LibWeb/HTML/CustomElements/CustomElementRegistry.cpp
@@ -33,7 +33,7 @@ CustomElementRegistry::~CustomElementRegistry() = default;
 void CustomElementRegistry::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CustomElementRegistryPrototype>(realm, ""CustomElementRegistry""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CustomElementRegistry);
 }
 
 void CustomElementRegistry::visit_edges(Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/DOMParser.cpp b/Userland/Libraries/LibWeb/HTML/DOMParser.cpp
index e61fecee5cfc..6cf711d649e5 100644
--- a/Userland/Libraries/LibWeb/HTML/DOMParser.cpp
+++ b/Userland/Libraries/LibWeb/HTML/DOMParser.cpp
@@ -33,7 +33,7 @@ DOMParser::~DOMParser() = default;
 void DOMParser::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMParserPrototype>(realm, ""DOMParser""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DOMParser);
 }
 
 // https://html.spec.whatwg.org/multipage/dynamic-markup-insertion.html#dom-domparser-parsefromstring
diff --git a/Userland/Libraries/LibWeb/HTML/DOMStringMap.cpp b/Userland/Libraries/LibWeb/HTML/DOMStringMap.cpp
index fe37def2c540..685827306816 100644
--- a/Userland/Libraries/LibWeb/HTML/DOMStringMap.cpp
+++ b/Userland/Libraries/LibWeb/HTML/DOMStringMap.cpp
@@ -37,7 +37,7 @@ DOMStringMap::~DOMStringMap() = default;
 void DOMStringMap::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMStringMapPrototype>(realm, ""DOMStringMap""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DOMStringMap);
 }
 
 void DOMStringMap::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/DataTransfer.cpp b/Userland/Libraries/LibWeb/HTML/DataTransfer.cpp
index 091a3ee22175..2b6370185e18 100644
--- a/Userland/Libraries/LibWeb/HTML/DataTransfer.cpp
+++ b/Userland/Libraries/LibWeb/HTML/DataTransfer.cpp
@@ -27,7 +27,7 @@ DataTransfer::~DataTransfer() = default;
 void DataTransfer::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DataTransferPrototype>(realm, ""DataTransfer""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DataTransfer);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/ErrorEvent.cpp b/Userland/Libraries/LibWeb/HTML/ErrorEvent.cpp
index e5d71da44b05..5606bfdb154f 100644
--- a/Userland/Libraries/LibWeb/HTML/ErrorEvent.cpp
+++ b/Userland/Libraries/LibWeb/HTML/ErrorEvent.cpp
@@ -36,7 +36,7 @@ ErrorEvent::~ErrorEvent() = default;
 void ErrorEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ErrorEventPrototype>(realm, ""ErrorEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ErrorEvent);
 }
 
 void ErrorEvent::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/FormDataEvent.cpp b/Userland/Libraries/LibWeb/HTML/FormDataEvent.cpp
index 64f6a74a6688..95e4992aac68 100644
--- a/Userland/Libraries/LibWeb/HTML/FormDataEvent.cpp
+++ b/Userland/Libraries/LibWeb/HTML/FormDataEvent.cpp
@@ -28,7 +28,7 @@ FormDataEvent::~FormDataEvent() = default;
 void FormDataEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::FormDataEventPrototype>(realm, ""FormDataEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(FormDataEvent);
 }
 
 void FormDataEvent::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLAnchorElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLAnchorElement.cpp
index a28027dc9607..56516ed247fb 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLAnchorElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLAnchorElement.cpp
@@ -23,7 +23,7 @@ HTMLAnchorElement::~HTMLAnchorElement() = default;
 void HTMLAnchorElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLAnchorElementPrototype>(realm, ""HTMLAnchorElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLAnchorElement);
 }
 
 void HTMLAnchorElement::attribute_changed(FlyString const& name, Optional<String> const& value)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLAreaElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLAreaElement.cpp
index 532c9034cf5a..3654d7c7bd21 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLAreaElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLAreaElement.cpp
@@ -22,7 +22,7 @@ HTMLAreaElement::~HTMLAreaElement() = default;
 void HTMLAreaElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLAreaElementPrototype>(realm, ""HTMLAreaElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLAreaElement);
 }
 
 void HTMLAreaElement::attribute_changed(FlyString const& name, Optional<String> const& value)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLAudioElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLAudioElement.cpp
index 35d4bbcf60ca..5a7bd7ca127f 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLAudioElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLAudioElement.cpp
@@ -24,7 +24,7 @@ HTMLAudioElement::~HTMLAudioElement() = default;
 void HTMLAudioElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLAudioElementPrototype>(realm, ""HTMLAudioElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLAudioElement);
 }
 
 JS::GCPtr<Layout::Node> HTMLAudioElement::create_layout_node(NonnullRefPtr<CSS::StyleProperties> style)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLBRElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLBRElement.cpp
index ed44de780c53..b1c2e002aa2e 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLBRElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLBRElement.cpp
@@ -22,7 +22,7 @@ HTMLBRElement::~HTMLBRElement() = default;
 void HTMLBRElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLBRElementPrototype>(realm, ""HTMLBRElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLBRElement);
 }
 
 JS::GCPtr<Layout::Node> HTMLBRElement::create_layout_node(NonnullRefPtr<CSS::StyleProperties> style)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLBaseElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLBaseElement.cpp
index d6e7c1691cb4..26fc0290f463 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLBaseElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLBaseElement.cpp
@@ -21,7 +21,7 @@ HTMLBaseElement::~HTMLBaseElement() = default;
 void HTMLBaseElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLBaseElementPrototype>(realm, ""HTMLBaseElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLBaseElement);
 }
 
 void HTMLBaseElement::inserted()
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLBodyElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLBodyElement.cpp
index 77613fe38582..377e3f9ee022 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLBodyElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLBodyElement.cpp
@@ -35,7 +35,7 @@ void HTMLBodyElement::visit_edges(Visitor& visitor)
 void HTMLBodyElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLBodyElementPrototype>(realm, ""HTMLBodyElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLBodyElement);
 }
 
 void HTMLBodyElement::apply_presentational_hints(CSS::StyleProperties& style) const
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLButtonElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLButtonElement.cpp
index 03a43eb5fd8a..c44a4d2652d9 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLButtonElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLButtonElement.cpp
@@ -22,7 +22,7 @@ HTMLButtonElement::~HTMLButtonElement() = default;
 void HTMLButtonElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLButtonElementPrototype>(realm, ""HTMLButtonElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLButtonElement);
 }
 
 HTMLButtonElement::TypeAttributeState HTMLButtonElement::type_state() const
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLCanvasElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLCanvasElement.cpp
index 0d111573e8c8..72a6123dc22d 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLCanvasElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLCanvasElement.cpp
@@ -40,7 +40,7 @@ HTMLCanvasElement::~HTMLCanvasElement() = default;
 void HTMLCanvasElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLCanvasElementPrototype>(realm, ""HTMLCanvasElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLCanvasElement);
 }
 
 void HTMLCanvasElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLDListElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLDListElement.cpp
index c475227bd917..8283a093068f 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLDListElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLDListElement.cpp
@@ -21,7 +21,7 @@ HTMLDListElement::~HTMLDListElement() = default;
 void HTMLDListElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLDListElementPrototype>(realm, ""HTMLDListElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLDListElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLDataElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLDataElement.cpp
index df15102d509c..35f96252e69f 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLDataElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLDataElement.cpp
@@ -21,7 +21,7 @@ HTMLDataElement::~HTMLDataElement() = default;
 void HTMLDataElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLDataElementPrototype>(realm, ""HTMLDataElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLDataElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLDataListElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLDataListElement.cpp
index f5ee101fc8fe..45191c3977d4 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLDataListElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLDataListElement.cpp
@@ -21,7 +21,7 @@ HTMLDataListElement::~HTMLDataListElement() = default;
 void HTMLDataListElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLDataListElementPrototype>(realm, ""HTMLDataListElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLDataListElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLDetailsElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLDetailsElement.cpp
index 23110e1ebce0..e617970ec470 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLDetailsElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLDetailsElement.cpp
@@ -38,7 +38,7 @@ void HTMLDetailsElement::visit_edges(Cell::Visitor& visitor)
 void HTMLDetailsElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLDetailsElementPrototype>(realm, ""HTMLDetailsElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLDetailsElement);
 }
 
 void HTMLDetailsElement::inserted()
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLDialogElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLDialogElement.cpp
index 18642c58d5c2..4f9d08679d92 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLDialogElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLDialogElement.cpp
@@ -23,7 +23,7 @@ HTMLDialogElement::~HTMLDialogElement() = default;
 void HTMLDialogElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLDialogElementPrototype>(realm, ""HTMLDialogElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLDialogElement);
 }
 
 // https://html.spec.whatwg.org/multipage/interactive-elements.html#dom-dialog-show
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLDirectoryElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLDirectoryElement.cpp
index 8729794e561e..8ff6f957d170 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLDirectoryElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLDirectoryElement.cpp
@@ -21,7 +21,7 @@ HTMLDirectoryElement::~HTMLDirectoryElement() = default;
 void HTMLDirectoryElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLDirectoryElementPrototype>(realm, ""HTMLDirectoryElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLDirectoryElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLDivElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLDivElement.cpp
index 205122d03b07..9ad3a24263c6 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLDivElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLDivElement.cpp
@@ -40,7 +40,7 @@ void HTMLDivElement::apply_presentational_hints(CSS::StyleProperties& style) con
 void HTMLDivElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLDivElementPrototype>(realm, ""HTMLDivElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLDivElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLDocument.cpp b/Userland/Libraries/LibWeb/HTML/HTMLDocument.cpp
index b890e57bbb16..601a70ee9782 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLDocument.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLDocument.cpp
@@ -30,7 +30,7 @@ JS::NonnullGCPtr<HTMLDocument> HTMLDocument::create(JS::Realm& realm, URL const&
 void HTMLDocument::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLDocumentPrototype>(realm, ""HTMLDocument""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLDocument);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLElement.cpp
index 839e4e838c9a..d8003b881b17 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLElement.cpp
@@ -48,7 +48,7 @@ HTMLElement::~HTMLElement() = default;
 void HTMLElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLElementPrototype>(realm, ""HTMLElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLElement);
 
     m_dataset = DOMStringMap::create(*this);
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLEmbedElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLEmbedElement.cpp
index 67dd6941bcf1..afebbc03e9e5 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLEmbedElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLEmbedElement.cpp
@@ -21,7 +21,7 @@ HTMLEmbedElement::~HTMLEmbedElement() = default;
 void HTMLEmbedElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLEmbedElementPrototype>(realm, ""HTMLEmbedElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLEmbedElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLFieldSetElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLFieldSetElement.cpp
index d3b371a5edec..eb70c8555c72 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLFieldSetElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLFieldSetElement.cpp
@@ -28,7 +28,7 @@ HTMLFieldSetElement::~HTMLFieldSetElement() = default;
 void HTMLFieldSetElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLFieldSetElementPrototype>(realm, ""HTMLFieldSetElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLFieldSetElement);
 }
 
 void HTMLFieldSetElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLFontElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLFontElement.cpp
index ff998a5d32a3..9e6e46205bd3 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLFontElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLFontElement.cpp
@@ -108,7 +108,7 @@ HTMLFontElement::~HTMLFontElement() = default;
 void HTMLFontElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLFontElementPrototype>(realm, ""HTMLFontElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLFontElement);
 }
 
 void HTMLFontElement::apply_presentational_hints(CSS::StyleProperties& style) const
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp
index e973b6194cc7..a43dbe46a935 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp
@@ -52,7 +52,7 @@ HTMLFormElement::~HTMLFormElement() = default;
 void HTMLFormElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLFormElementPrototype>(realm, ""HTMLFormElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLFormElement);
 }
 
 void HTMLFormElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLFrameElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLFrameElement.cpp
index 570cdbfdc4d8..fb64b872859d 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLFrameElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLFrameElement.cpp
@@ -21,7 +21,7 @@ HTMLFrameElement::~HTMLFrameElement() = default;
 void HTMLFrameElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLFrameElementPrototype>(realm, ""HTMLFrameElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLFrameElement);
 }
 
 // https://html.spec.whatwg.org/multipage/interaction.html#dom-tabindex
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLFrameSetElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLFrameSetElement.cpp
index bf9fcf04b3bb..0603b4a90417 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLFrameSetElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLFrameSetElement.cpp
@@ -22,7 +22,7 @@ HTMLFrameSetElement::~HTMLFrameSetElement() = default;
 void HTMLFrameSetElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLFrameSetElementPrototype>(realm, ""HTMLFrameSetElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLFrameSetElement);
 }
 
 void HTMLFrameSetElement::attribute_changed(FlyString const& name, Optional<String> const& value)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLHRElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLHRElement.cpp
index 421108bb3acc..f1f176be01dc 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLHRElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLHRElement.cpp
@@ -21,7 +21,7 @@ HTMLHRElement::~HTMLHRElement() = default;
 void HTMLHRElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLHRElementPrototype>(realm, ""HTMLHRElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLHRElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLHeadElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLHeadElement.cpp
index dad17f877f19..5cadf5359173 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLHeadElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLHeadElement.cpp
@@ -21,7 +21,7 @@ HTMLHeadElement::~HTMLHeadElement() = default;
 void HTMLHeadElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLHeadElementPrototype>(realm, ""HTMLHeadElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLHeadElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLHeadingElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLHeadingElement.cpp
index 613e5b76d128..59835cf6b469 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLHeadingElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLHeadingElement.cpp
@@ -23,7 +23,7 @@ HTMLHeadingElement::~HTMLHeadingElement() = default;
 void HTMLHeadingElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLHeadingElementPrototype>(realm, ""HTMLHeadingElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLHeadingElement);
 }
 
 // https://html.spec.whatwg.org/multipage/rendering.html#tables-2
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLHtmlElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLHtmlElement.cpp
index 6274dcd44d24..5470f9ec7709 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLHtmlElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLHtmlElement.cpp
@@ -22,7 +22,7 @@ HTMLHtmlElement::~HTMLHtmlElement() = default;
 void HTMLHtmlElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLHtmlElementPrototype>(realm, ""HTMLHtmlElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLHtmlElement);
 }
 
 bool HTMLHtmlElement::should_use_body_background_properties() const
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLIFrameElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLIFrameElement.cpp
index da0764c4e492..842b2b8cf0e3 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLIFrameElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLIFrameElement.cpp
@@ -28,7 +28,7 @@ HTMLIFrameElement::~HTMLIFrameElement() = default;
 void HTMLIFrameElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLIFrameElementPrototype>(realm, ""HTMLIFrameElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLIFrameElement);
 }
 
 JS::GCPtr<Layout::Node> HTMLIFrameElement::create_layout_node(NonnullRefPtr<CSS::StyleProperties> style)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLImageElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLImageElement.cpp
index 280a9f666409..ac1215e92c98 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLImageElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLImageElement.cpp
@@ -55,7 +55,7 @@ void HTMLImageElement::finalize()
 void HTMLImageElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLImageElementPrototype>(realm, ""HTMLImageElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLImageElement);
 
     m_current_request = ImageRequest::create(realm, document().page());
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
index 61c62e254192..6aaeee35ca71 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
@@ -62,7 +62,7 @@ HTMLInputElement::~HTMLInputElement() = default;
 void HTMLInputElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLInputElementPrototype>(realm, ""HTMLInputElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLInputElement);
 }
 
 void HTMLInputElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLLIElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLLIElement.cpp
index b51f0d5ea0e7..13f0a3ba2577 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLLIElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLLIElement.cpp
@@ -21,7 +21,7 @@ HTMLLIElement::~HTMLLIElement() = default;
 void HTMLLIElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLLIElementPrototype>(realm, ""HTMLLIElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLLIElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLLabelElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLLabelElement.cpp
index 95a41f7539a1..411a4279b8f9 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLLabelElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLLabelElement.cpp
@@ -22,7 +22,7 @@ HTMLLabelElement::~HTMLLabelElement() = default;
 void HTMLLabelElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLLabelElementPrototype>(realm, ""HTMLLabelElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLLabelElement);
 }
 
 JS::GCPtr<Layout::Node> HTMLLabelElement::create_layout_node(NonnullRefPtr<CSS::StyleProperties> style)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLLegendElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLLegendElement.cpp
index 84362407b9c4..aaedddd478f1 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLLegendElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLLegendElement.cpp
@@ -22,7 +22,7 @@ HTMLLegendElement::~HTMLLegendElement() = default;
 void HTMLLegendElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLLegendElementPrototype>(realm, ""HTMLLegendElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLLegendElement);
 }
 
 // https://html.spec.whatwg.org/multipage/form-elements.html#dom-legend-form
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLLinkElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLLinkElement.cpp
index 5d1e03db36d6..9a5e25a5633f 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLLinkElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLLinkElement.cpp
@@ -43,7 +43,7 @@ HTMLLinkElement::~HTMLLinkElement() = default;
 void HTMLLinkElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLLinkElementPrototype>(realm, ""HTMLLinkElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLLinkElement);
 }
 
 void HTMLLinkElement::inserted()
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLMapElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLMapElement.cpp
index c39ad4b73a5e..99515fa882b6 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLMapElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLMapElement.cpp
@@ -21,7 +21,7 @@ HTMLMapElement::~HTMLMapElement() = default;
 void HTMLMapElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLMapElementPrototype>(realm, ""HTMLMapElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLMapElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLMarqueeElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLMarqueeElement.cpp
index d386096fe53d..ac39cb23b7d0 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLMarqueeElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLMarqueeElement.cpp
@@ -24,7 +24,7 @@ HTMLMarqueeElement::~HTMLMarqueeElement() = default;
 void HTMLMarqueeElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLMarqueeElementPrototype>(realm, ""HTMLMarqueeElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLMarqueeElement);
 }
 
 void HTMLMarqueeElement::apply_presentational_hints(CSS::StyleProperties& style) const
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLMediaElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLMediaElement.cpp
index 4d9193a7a88e..0b4265808bce 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLMediaElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLMediaElement.cpp
@@ -51,7 +51,7 @@ HTMLMediaElement::~HTMLMediaElement() = default;
 void HTMLMediaElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLMediaElementPrototype>(realm, ""HTMLMediaElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLMediaElement);
 
     m_audio_tracks = realm.heap().allocate<AudioTrackList>(realm, realm);
     m_video_tracks = realm.heap().allocate<VideoTrackList>(realm, realm);
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLMenuElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLMenuElement.cpp
index e034025a8c8e..06846b6379a9 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLMenuElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLMenuElement.cpp
@@ -21,7 +21,7 @@ HTMLMenuElement::~HTMLMenuElement() = default;
 void HTMLMenuElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLMenuElementPrototype>(realm, ""HTMLMenuElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLMenuElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLMetaElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLMetaElement.cpp
index 2bf21c45e585..503bbf26a2cc 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLMetaElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLMetaElement.cpp
@@ -29,7 +29,7 @@ HTMLMetaElement::~HTMLMetaElement() = default;
 void HTMLMetaElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLMetaElementPrototype>(realm, ""HTMLMetaElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLMetaElement);
 }
 
 Optional<HTMLMetaElement::HttpEquivAttributeState> HTMLMetaElement::http_equiv_state() const
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLMeterElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLMeterElement.cpp
index e677cdbbd3fd..abc3a5c94879 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLMeterElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLMeterElement.cpp
@@ -26,7 +26,7 @@ HTMLMeterElement::~HTMLMeterElement() = default;
 void HTMLMeterElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLMeterElementPrototype>(realm, ""HTMLMeterElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLMeterElement);
 }
 
 void HTMLMeterElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLModElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLModElement.cpp
index 6925ef7cda17..76f5713f4c10 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLModElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLModElement.cpp
@@ -22,7 +22,7 @@ HTMLModElement::~HTMLModElement() = default;
 void HTMLModElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLModElementPrototype>(realm, ""HTMLModElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLModElement);
 }
 
 Optional<ARIA::Role> HTMLModElement::default_role() const
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLOListElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLOListElement.cpp
index 43fa8c7af933..db264c36467f 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLOListElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLOListElement.cpp
@@ -21,7 +21,7 @@ HTMLOListElement::~HTMLOListElement() = default;
 void HTMLOListElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLOListElementPrototype>(realm, ""HTMLOListElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLOListElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLObjectElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLObjectElement.cpp
index f1d50ccb4bc2..cc90332ca7e2 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLObjectElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLObjectElement.cpp
@@ -39,7 +39,7 @@ HTMLObjectElement::~HTMLObjectElement() = default;
 void HTMLObjectElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLObjectElementPrototype>(realm, ""HTMLObjectElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLObjectElement);
 }
 
 void HTMLObjectElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLOptGroupElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLOptGroupElement.cpp
index 9a06b7f36f8b..95ca8ae293a4 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLOptGroupElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLOptGroupElement.cpp
@@ -21,7 +21,7 @@ HTMLOptGroupElement::~HTMLOptGroupElement() = default;
 void HTMLOptGroupElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLOptGroupElementPrototype>(realm, ""HTMLOptGroupElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLOptGroupElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLOptionElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLOptionElement.cpp
index 122c01685b41..b5b14ef25126 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLOptionElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLOptionElement.cpp
@@ -30,7 +30,7 @@ HTMLOptionElement::~HTMLOptionElement() = default;
 void HTMLOptionElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLOptionElementPrototype>(realm, ""HTMLOptionElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLOptionElement);
 }
 
 void HTMLOptionElement::attribute_changed(FlyString const& name, Optional<String> const& value)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLOptionsCollection.cpp b/Userland/Libraries/LibWeb/HTML/HTMLOptionsCollection.cpp
index b257f4068181..4a2ff0eb406a 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLOptionsCollection.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLOptionsCollection.cpp
@@ -30,7 +30,7 @@ HTMLOptionsCollection::~HTMLOptionsCollection() = default;
 void HTMLOptionsCollection::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLOptionsCollectionPrototype>(realm, ""HTMLOptionsCollection""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLOptionsCollection);
 }
 
 // https://html.spec.whatwg.org/multipage/common-dom-interfaces.html#dom-htmloptionscollection-add
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLOutputElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLOutputElement.cpp
index b12bcf0ab807..4dcd3c11a869 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLOutputElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLOutputElement.cpp
@@ -21,7 +21,7 @@ HTMLOutputElement::~HTMLOutputElement() = default;
 void HTMLOutputElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLOutputElementPrototype>(realm, ""HTMLOutputElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLOutputElement);
 }
 
 // https://html.spec.whatwg.org/multipage/form-elements.html#dom-output-defaultvalue
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLParagraphElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLParagraphElement.cpp
index 6b06962d39c6..4894f0558e2e 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLParagraphElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLParagraphElement.cpp
@@ -23,7 +23,7 @@ HTMLParagraphElement::~HTMLParagraphElement() = default;
 void HTMLParagraphElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLParagraphElementPrototype>(realm, ""HTMLParagraphElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLParagraphElement);
 }
 
 // https://html.spec.whatwg.org/multipage/rendering.html#tables-2
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLParamElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLParamElement.cpp
index d1d672b4781a..af976e1cadda 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLParamElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLParamElement.cpp
@@ -21,7 +21,7 @@ HTMLParamElement::~HTMLParamElement() = default;
 void HTMLParamElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLParamElementPrototype>(realm, ""HTMLParamElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLParamElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLPictureElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLPictureElement.cpp
index 57cea48918db..7a40a1450504 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLPictureElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLPictureElement.cpp
@@ -21,7 +21,7 @@ HTMLPictureElement::~HTMLPictureElement() = default;
 void HTMLPictureElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLPictureElementPrototype>(realm, ""HTMLPictureElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLPictureElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLPreElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLPreElement.cpp
index ee2c2e7cf82a..b14d38b060cd 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLPreElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLPreElement.cpp
@@ -24,7 +24,7 @@ HTMLPreElement::~HTMLPreElement() = default;
 void HTMLPreElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLPreElementPrototype>(realm, ""HTMLPreElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLPreElement);
 }
 
 void HTMLPreElement::apply_presentational_hints(CSS::StyleProperties& style) const
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLProgressElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLProgressElement.cpp
index bf394a134e89..c0629e1c0394 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLProgressElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLProgressElement.cpp
@@ -27,7 +27,7 @@ HTMLProgressElement::~HTMLProgressElement() = default;
 void HTMLProgressElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLProgressElementPrototype>(realm, ""HTMLProgressElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLProgressElement);
 }
 
 void HTMLProgressElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLQuoteElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLQuoteElement.cpp
index 312f4abda804..91f0073161e8 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLQuoteElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLQuoteElement.cpp
@@ -23,7 +23,7 @@ HTMLQuoteElement::~HTMLQuoteElement() = default;
 void HTMLQuoteElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLQuoteElementPrototype>(realm, ""HTMLQuoteElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLQuoteElement);
 }
 
 Optional<ARIA::Role> HTMLQuoteElement::default_role() const
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLScriptElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLScriptElement.cpp
index 57eb0c759618..31ba38b5622b 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLScriptElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLScriptElement.cpp
@@ -35,7 +35,7 @@ HTMLScriptElement::~HTMLScriptElement() = default;
 void HTMLScriptElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLScriptElementPrototype>(realm, ""HTMLScriptElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLScriptElement);
 }
 
 void HTMLScriptElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLSelectElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLSelectElement.cpp
index 4bc8958cf21f..46ccb9a5da53 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLSelectElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLSelectElement.cpp
@@ -37,7 +37,7 @@ HTMLSelectElement::~HTMLSelectElement() = default;
 void HTMLSelectElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLSelectElementPrototype>(realm, ""HTMLSelectElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLSelectElement);
 }
 
 void HTMLSelectElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLSlotElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLSlotElement.cpp
index 4a52fc9cf262..edb0a3910bf5 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLSlotElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLSlotElement.cpp
@@ -24,7 +24,7 @@ HTMLSlotElement::~HTMLSlotElement() = default;
 void HTMLSlotElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLSlotElementPrototype>(realm, ""HTMLSlotElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLSlotElement);
 }
 
 void HTMLSlotElement::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLSourceElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLSourceElement.cpp
index 5ac4a955ba80..c11cd04cb882 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLSourceElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLSourceElement.cpp
@@ -23,7 +23,7 @@ HTMLSourceElement::~HTMLSourceElement() = default;
 void HTMLSourceElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLSourceElementPrototype>(realm, ""HTMLSourceElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLSourceElement);
 }
 
 // https://html.spec.whatwg.org/multipage/embedded-content.html#the-source-element:the-source-element-15
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLSpanElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLSpanElement.cpp
index 5999fee08286..3718131ff4e8 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLSpanElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLSpanElement.cpp
@@ -21,7 +21,7 @@ HTMLSpanElement::~HTMLSpanElement() = default;
 void HTMLSpanElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLSpanElementPrototype>(realm, ""HTMLSpanElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLSpanElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.cpp
index 3134fd39202d..13798f7cd9d6 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLStyleElement.cpp
@@ -21,7 +21,7 @@ HTMLStyleElement::~HTMLStyleElement() = default;
 void HTMLStyleElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLStyleElementPrototype>(realm, ""HTMLStyleElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLStyleElement);
 }
 
 void HTMLStyleElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableCaptionElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLTableCaptionElement.cpp
index 18adcb81ef60..24a6a26bf6e0 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableCaptionElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableCaptionElement.cpp
@@ -23,7 +23,7 @@ HTMLTableCaptionElement::~HTMLTableCaptionElement() = default;
 void HTMLTableCaptionElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLTableCaptionElementPrototype>(realm, ""HTMLTableCaptionElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLTableCaptionElement);
 }
 
 // https://html.spec.whatwg.org/multipage/rendering.html#tables-2
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.cpp
index e283c4cea10d..0a02c7104b7c 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.cpp
@@ -31,7 +31,7 @@ HTMLTableCellElement::~HTMLTableCellElement() = default;
 void HTMLTableCellElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLTableCellElementPrototype>(realm, ""HTMLTableCellElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLTableCellElement);
 }
 
 void HTMLTableCellElement::apply_presentational_hints(CSS::StyleProperties& style) const
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableColElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLTableColElement.cpp
index b8123c50cc1d..c14b9ca3b259 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableColElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableColElement.cpp
@@ -22,7 +22,7 @@ HTMLTableColElement::~HTMLTableColElement() = default;
 void HTMLTableColElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLTableColElementPrototype>(realm, ""HTMLTableColElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLTableColElement);
 }
 
 // https://html.spec.whatwg.org/multipage/tables.html#dom-colgroup-span
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLTableElement.cpp
index 2161e219a7c4..85c9a4aee684 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableElement.cpp
@@ -34,7 +34,7 @@ HTMLTableElement::~HTMLTableElement() = default;
 void HTMLTableElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLTableElementPrototype>(realm, ""HTMLTableElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLTableElement);
 }
 
 void HTMLTableElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableRowElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLTableRowElement.cpp
index c917b27fb4d1..ca544937ebf7 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableRowElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableRowElement.cpp
@@ -35,7 +35,7 @@ HTMLTableRowElement::~HTMLTableRowElement() = default;
 void HTMLTableRowElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLTableRowElementPrototype>(realm, ""HTMLTableRowElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLTableRowElement);
 }
 
 void HTMLTableRowElement::apply_presentational_hints(CSS::StyleProperties& style) const
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.cpp
index cd1a71f688e0..332283d6c8e6 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableSectionElement.cpp
@@ -26,7 +26,7 @@ HTMLTableSectionElement::~HTMLTableSectionElement() = default;
 void HTMLTableSectionElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLTableSectionElementPrototype>(realm, ""HTMLTableSectionElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLTableSectionElement);
 }
 
 void HTMLTableSectionElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTemplateElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLTemplateElement.cpp
index 0fccdfc10522..0cfb8118615c 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTemplateElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTemplateElement.cpp
@@ -22,7 +22,7 @@ HTMLTemplateElement::~HTMLTemplateElement() = default;
 void HTMLTemplateElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLTemplateElementPrototype>(realm, ""HTMLTemplateElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLTemplateElement);
 
     m_content = heap().allocate<DOM::DocumentFragment>(realm, m_document->appropriate_template_contents_owner_document());
     m_content->set_host(this);
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTextAreaElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLTextAreaElement.cpp
index e059950b3f1c..05ac71e2d51b 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTextAreaElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTextAreaElement.cpp
@@ -52,7 +52,7 @@ void HTMLTextAreaElement::adjust_computed_style(CSS::StyleProperties& style)
 void HTMLTextAreaElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLTextAreaElementPrototype>(realm, ""HTMLTextAreaElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLTextAreaElement);
 }
 
 void HTMLTextAreaElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTimeElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLTimeElement.cpp
index 69f9151c011e..1937644bd7a9 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTimeElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTimeElement.cpp
@@ -19,7 +19,7 @@ HTMLTimeElement::HTMLTimeElement(DOM::Document& document, DOM::QualifiedName qua
 void HTMLTimeElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLTimeElementPrototype>(realm, ""HTMLTimeElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLTimeElement);
 }
 
 HTMLTimeElement::~HTMLTimeElement() = default;
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTitleElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLTitleElement.cpp
index a65e15158ecf..47e989c1a584 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTitleElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTitleElement.cpp
@@ -23,7 +23,7 @@ HTMLTitleElement::~HTMLTitleElement() = default;
 void HTMLTitleElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLTitleElementPrototype>(realm, ""HTMLTitleElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLTitleElement);
 }
 
 void HTMLTitleElement::children_changed()
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTrackElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLTrackElement.cpp
index 09c983b04d71..1f4b6403915d 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTrackElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTrackElement.cpp
@@ -21,7 +21,7 @@ HTMLTrackElement::~HTMLTrackElement() = default;
 void HTMLTrackElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLTrackElementPrototype>(realm, ""HTMLTrackElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLTrackElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLUListElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLUListElement.cpp
index 6488b8c0b948..93f5ba426521 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLUListElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLUListElement.cpp
@@ -21,7 +21,7 @@ HTMLUListElement::~HTMLUListElement() = default;
 void HTMLUListElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLUListElementPrototype>(realm, ""HTMLUListElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLUListElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLUnknownElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLUnknownElement.cpp
index 2e5d0102d5cb..94fcbe451269 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLUnknownElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLUnknownElement.cpp
@@ -21,7 +21,7 @@ HTMLUnknownElement::~HTMLUnknownElement() = default;
 void HTMLUnknownElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLUnknownElementPrototype>(realm, ""HTMLUnknownElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLUnknownElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLVideoElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLVideoElement.cpp
index b4f8ad94e0ae..1253455cd869 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLVideoElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLVideoElement.cpp
@@ -33,7 +33,7 @@ HTMLVideoElement::~HTMLVideoElement() = default;
 void HTMLVideoElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HTMLVideoElementPrototype>(realm, ""HTMLVideoElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(HTMLVideoElement);
 }
 
 void HTMLVideoElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/History.cpp b/Userland/Libraries/LibWeb/HTML/History.cpp
index 31bb36efd639..5e6b8a7eaf32 100644
--- a/Userland/Libraries/LibWeb/HTML/History.cpp
+++ b/Userland/Libraries/LibWeb/HTML/History.cpp
@@ -31,7 +31,7 @@ History::~History() = default;
 void History::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::HistoryPrototype>(realm, ""History""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(History);
 }
 
 void History::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/ImageData.cpp b/Userland/Libraries/LibWeb/HTML/ImageData.cpp
index 1fa96c20869b..648de71a04a2 100644
--- a/Userland/Libraries/LibWeb/HTML/ImageData.cpp
+++ b/Userland/Libraries/LibWeb/HTML/ImageData.cpp
@@ -45,7 +45,7 @@ ImageData::~ImageData() = default;
 void ImageData::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ImageDataPrototype>(realm, ""ImageData""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ImageData);
 }
 
 void ImageData::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/Location.cpp b/Userland/Libraries/LibWeb/HTML/Location.cpp
index 82ddb7b4116b..c03e199bde46 100644
--- a/Userland/Libraries/LibWeb/HTML/Location.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Location.cpp
@@ -42,7 +42,7 @@ void Location::visit_edges(Cell::Visitor& visitor)
 void Location::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::LocationPrototype>(realm, ""Location""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Location);
 
     // FIXME: Implement steps 2.-4.
 
diff --git a/Userland/Libraries/LibWeb/HTML/MediaError.cpp b/Userland/Libraries/LibWeb/HTML/MediaError.cpp
index 50b335338af8..7f5090481102 100644
--- a/Userland/Libraries/LibWeb/HTML/MediaError.cpp
+++ b/Userland/Libraries/LibWeb/HTML/MediaError.cpp
@@ -23,7 +23,7 @@ MediaError::MediaError(JS::Realm& realm, Code code, String message)
 void MediaError::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::MediaErrorPrototype>(realm, ""MediaError""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(MediaError);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/MessageChannel.cpp b/Userland/Libraries/LibWeb/HTML/MessageChannel.cpp
index a3bd14978791..256cef605de1 100644
--- a/Userland/Libraries/LibWeb/HTML/MessageChannel.cpp
+++ b/Userland/Libraries/LibWeb/HTML/MessageChannel.cpp
@@ -43,7 +43,7 @@ void MessageChannel::visit_edges(Cell::Visitor& visitor)
 void MessageChannel::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::MessageChannelPrototype>(realm, ""MessageChannel""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(MessageChannel);
 }
 
 MessagePort* MessageChannel::port1()
diff --git a/Userland/Libraries/LibWeb/HTML/MessageEvent.cpp b/Userland/Libraries/LibWeb/HTML/MessageEvent.cpp
index c5046dfccddb..1f754c62ef1c 100644
--- a/Userland/Libraries/LibWeb/HTML/MessageEvent.cpp
+++ b/Userland/Libraries/LibWeb/HTML/MessageEvent.cpp
@@ -41,7 +41,7 @@ MessageEvent::~MessageEvent() = default;
 void MessageEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::MessageEventPrototype>(realm, ""MessageEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(MessageEvent);
 }
 
 void MessageEvent::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/MessagePort.cpp b/Userland/Libraries/LibWeb/HTML/MessagePort.cpp
index defc64969b08..f4fef1b06d03 100644
--- a/Userland/Libraries/LibWeb/HTML/MessagePort.cpp
+++ b/Userland/Libraries/LibWeb/HTML/MessagePort.cpp
@@ -45,7 +45,7 @@ MessagePort::~MessagePort()
 void MessagePort::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::MessagePortPrototype>(realm, ""MessagePort""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(MessagePort);
 }
 
 void MessagePort::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/MimeType.cpp b/Userland/Libraries/LibWeb/HTML/MimeType.cpp
index 571f7ea75e7f..ee12da6d575d 100644
--- a/Userland/Libraries/LibWeb/HTML/MimeType.cpp
+++ b/Userland/Libraries/LibWeb/HTML/MimeType.cpp
@@ -24,7 +24,7 @@ MimeType::~MimeType() = default;
 void MimeType::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::MimeTypePrototype>(realm, ""MimeType""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(MimeType);
 }
 
 // https://html.spec.whatwg.org/multipage/system-state.html#concept-mimetype-type
diff --git a/Userland/Libraries/LibWeb/HTML/MimeTypeArray.cpp b/Userland/Libraries/LibWeb/HTML/MimeTypeArray.cpp
index b55390d758a7..832a0e06ddf9 100644
--- a/Userland/Libraries/LibWeb/HTML/MimeTypeArray.cpp
+++ b/Userland/Libraries/LibWeb/HTML/MimeTypeArray.cpp
@@ -29,7 +29,7 @@ MimeTypeArray::~MimeTypeArray() = default;
 void MimeTypeArray::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::MimeTypeArrayPrototype>(realm, ""MimeTypeArray""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(MimeTypeArray);
 }
 
 // https://html.spec.whatwg.org/multipage/system-state.html#pdf-viewing-support:support-named-properties-2
diff --git a/Userland/Libraries/LibWeb/HTML/NavigateEvent.cpp b/Userland/Libraries/LibWeb/HTML/NavigateEvent.cpp
index ee1eec390daa..3a63f381a660 100644
--- a/Userland/Libraries/LibWeb/HTML/NavigateEvent.cpp
+++ b/Userland/Libraries/LibWeb/HTML/NavigateEvent.cpp
@@ -50,7 +50,7 @@ NavigateEvent::~NavigateEvent() = default;
 void NavigateEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::NavigateEventPrototype>(realm, ""NavigateEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(NavigateEvent);
 }
 
 void NavigateEvent::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/Navigation.cpp b/Userland/Libraries/LibWeb/HTML/Navigation.cpp
index f78d3b26f6b9..b0ab3321d057 100644
--- a/Userland/Libraries/LibWeb/HTML/Navigation.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Navigation.cpp
@@ -76,7 +76,7 @@ Navigation::~Navigation() = default;
 void Navigation::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::NavigationPrototype>(realm, ""Navigation""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Navigation);
 }
 
 void Navigation::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/NavigationCurrentEntryChangeEvent.cpp b/Userland/Libraries/LibWeb/HTML/NavigationCurrentEntryChangeEvent.cpp
index f4884eece205..944304e91955 100644
--- a/Userland/Libraries/LibWeb/HTML/NavigationCurrentEntryChangeEvent.cpp
+++ b/Userland/Libraries/LibWeb/HTML/NavigationCurrentEntryChangeEvent.cpp
@@ -32,7 +32,7 @@ NavigationCurrentEntryChangeEvent::~NavigationCurrentEntryChangeEvent() = defaul
 void NavigationCurrentEntryChangeEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::NavigationCurrentEntryChangeEventPrototype>(realm, ""NavigationCurrentEntryChangeEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(NavigationCurrentEntryChangeEvent);
 }
 
 void NavigationCurrentEntryChangeEvent::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/NavigationDestination.cpp b/Userland/Libraries/LibWeb/HTML/NavigationDestination.cpp
index d42591b1a887..c04dcf7c2104 100644
--- a/Userland/Libraries/LibWeb/HTML/NavigationDestination.cpp
+++ b/Userland/Libraries/LibWeb/HTML/NavigationDestination.cpp
@@ -30,7 +30,7 @@ NavigationDestination::~NavigationDestination() = default;
 void NavigationDestination::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::NavigationDestinationPrototype>(realm, ""NavigationDestination""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(NavigationDestination);
 }
 
 void NavigationDestination::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/NavigationHistoryEntry.cpp b/Userland/Libraries/LibWeb/HTML/NavigationHistoryEntry.cpp
index d4f6500a3158..3a1d541e15d1 100644
--- a/Userland/Libraries/LibWeb/HTML/NavigationHistoryEntry.cpp
+++ b/Userland/Libraries/LibWeb/HTML/NavigationHistoryEntry.cpp
@@ -34,7 +34,7 @@ NavigationHistoryEntry::~NavigationHistoryEntry() = default;
 void NavigationHistoryEntry::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::NavigationHistoryEntryPrototype>(realm, ""NavigationHistoryEntry""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(NavigationHistoryEntry);
 }
 
 void NavigationHistoryEntry::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/NavigationTransition.cpp b/Userland/Libraries/LibWeb/HTML/NavigationTransition.cpp
index 233439ef7417..9d953116b140 100644
--- a/Userland/Libraries/LibWeb/HTML/NavigationTransition.cpp
+++ b/Userland/Libraries/LibWeb/HTML/NavigationTransition.cpp
@@ -34,7 +34,7 @@ NavigationTransition::~NavigationTransition() = default;
 void NavigationTransition::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::NavigationTransitionPrototype>(realm, ""NavigationTransition""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(NavigationTransition);
 }
 
 void NavigationTransition::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/Navigator.cpp b/Userland/Libraries/LibWeb/HTML/Navigator.cpp
index d60a919f4431..e4da92d0a48d 100644
--- a/Userland/Libraries/LibWeb/HTML/Navigator.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Navigator.cpp
@@ -33,7 +33,7 @@ Navigator::~Navigator() = default;
 void Navigator::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::NavigatorPrototype>(realm, ""Navigator""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Navigator);
 }
 
 // https://html.spec.whatwg.org/multipage/system-state.html#dom-navigator-pdfviewerenabled
diff --git a/Userland/Libraries/LibWeb/HTML/PageTransitionEvent.cpp b/Userland/Libraries/LibWeb/HTML/PageTransitionEvent.cpp
index da408f86adf9..8e359c8048fb 100644
--- a/Userland/Libraries/LibWeb/HTML/PageTransitionEvent.cpp
+++ b/Userland/Libraries/LibWeb/HTML/PageTransitionEvent.cpp
@@ -32,7 +32,7 @@ PageTransitionEvent::~PageTransitionEvent() = default;
 void PageTransitionEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::PageTransitionEventPrototype>(realm, ""PageTransitionEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(PageTransitionEvent);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/Plugin.cpp b/Userland/Libraries/LibWeb/HTML/Plugin.cpp
index 77b9a95ebee5..6da0e4731577 100644
--- a/Userland/Libraries/LibWeb/HTML/Plugin.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Plugin.cpp
@@ -30,7 +30,7 @@ Plugin::~Plugin() = default;
 void Plugin::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::PluginPrototype>(realm, ""Plugin""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Plugin);
 }
 
 // https://html.spec.whatwg.org/multipage/system-state.html#dom-plugin-name
diff --git a/Userland/Libraries/LibWeb/HTML/PluginArray.cpp b/Userland/Libraries/LibWeb/HTML/PluginArray.cpp
index 69f54007ba16..79104ac199fa 100644
--- a/Userland/Libraries/LibWeb/HTML/PluginArray.cpp
+++ b/Userland/Libraries/LibWeb/HTML/PluginArray.cpp
@@ -29,7 +29,7 @@ PluginArray::~PluginArray() = default;
 void PluginArray::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::PluginArrayPrototype>(realm, ""PluginArray""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(PluginArray);
 }
 
 // https://html.spec.whatwg.org/multipage/system-state.html#dom-pluginarray-refresh
diff --git a/Userland/Libraries/LibWeb/HTML/PromiseRejectionEvent.cpp b/Userland/Libraries/LibWeb/HTML/PromiseRejectionEvent.cpp
index acdb915d7e99..cb9cd964fdb3 100644
--- a/Userland/Libraries/LibWeb/HTML/PromiseRejectionEvent.cpp
+++ b/Userland/Libraries/LibWeb/HTML/PromiseRejectionEvent.cpp
@@ -40,7 +40,7 @@ void PromiseRejectionEvent::visit_edges(Cell::Visitor& visitor)
 void PromiseRejectionEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::PromiseRejectionEventPrototype>(realm, ""PromiseRejectionEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(PromiseRejectionEvent);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/Storage.cpp b/Userland/Libraries/LibWeb/HTML/Storage.cpp
index 5bdcc03171a5..4c1c3bbade84 100644
--- a/Userland/Libraries/LibWeb/HTML/Storage.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Storage.cpp
@@ -36,7 +36,7 @@ Storage::~Storage() = default;
 void Storage::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::StoragePrototype>(realm, ""Storage""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Storage);
 }
 
 // https://html.spec.whatwg.org/multipage/webstorage.html#dom-storage-length
diff --git a/Userland/Libraries/LibWeb/HTML/SubmitEvent.cpp b/Userland/Libraries/LibWeb/HTML/SubmitEvent.cpp
index 5c3a2b171c54..ea77be544c8d 100644
--- a/Userland/Libraries/LibWeb/HTML/SubmitEvent.cpp
+++ b/Userland/Libraries/LibWeb/HTML/SubmitEvent.cpp
@@ -32,7 +32,7 @@ SubmitEvent::~SubmitEvent() = default;
 void SubmitEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SubmitEventPrototype>(realm, ""SubmitEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SubmitEvent);
 }
 
 void SubmitEvent::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/TextMetrics.cpp b/Userland/Libraries/LibWeb/HTML/TextMetrics.cpp
index d7729bd6d35f..c7f7ed45d70e 100644
--- a/Userland/Libraries/LibWeb/HTML/TextMetrics.cpp
+++ b/Userland/Libraries/LibWeb/HTML/TextMetrics.cpp
@@ -27,7 +27,7 @@ TextMetrics::~TextMetrics() = default;
 void TextMetrics::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::TextMetricsPrototype>(realm, ""TextMetrics""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(TextMetrics);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/TimeRanges.cpp b/Userland/Libraries/LibWeb/HTML/TimeRanges.cpp
index 5ae17229dce7..0256fb2b0d70 100644
--- a/Userland/Libraries/LibWeb/HTML/TimeRanges.cpp
+++ b/Userland/Libraries/LibWeb/HTML/TimeRanges.cpp
@@ -21,7 +21,7 @@ TimeRanges::TimeRanges(JS::Realm& realm)
 void TimeRanges::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::TimeRangesPrototype>(realm, ""TimeRanges""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(TimeRanges);
 }
 
 // https://html.spec.whatwg.org/multipage/media.html#dom-timeranges-length
diff --git a/Userland/Libraries/LibWeb/HTML/ToggleEvent.cpp b/Userland/Libraries/LibWeb/HTML/ToggleEvent.cpp
index e1c1f087a9e5..ab5b33c8d35c 100644
--- a/Userland/Libraries/LibWeb/HTML/ToggleEvent.cpp
+++ b/Userland/Libraries/LibWeb/HTML/ToggleEvent.cpp
@@ -32,7 +32,7 @@ ToggleEvent::ToggleEvent(JS::Realm& realm, FlyString const& event_name, ToggleEv
 void ToggleEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ToggleEventPrototype>(realm, ""ToggleEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ToggleEvent);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/TrackEvent.cpp b/Userland/Libraries/LibWeb/HTML/TrackEvent.cpp
index e42548bda2f9..512135089a80 100644
--- a/Userland/Libraries/LibWeb/HTML/TrackEvent.cpp
+++ b/Userland/Libraries/LibWeb/HTML/TrackEvent.cpp
@@ -31,7 +31,7 @@ TrackEvent::TrackEvent(JS::Realm& realm, FlyString const& event_name, TrackEvent
 void TrackEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::TrackEventPrototype>(realm, ""TrackEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(TrackEvent);
 }
 
 Variant<Empty, JS::Handle<VideoTrack>, JS::Handle<AudioTrack>> TrackEvent::track() const
diff --git a/Userland/Libraries/LibWeb/HTML/VideoTrack.cpp b/Userland/Libraries/LibWeb/HTML/VideoTrack.cpp
index 9dec80409a83..d6f598f53a0d 100644
--- a/Userland/Libraries/LibWeb/HTML/VideoTrack.cpp
+++ b/Userland/Libraries/LibWeb/HTML/VideoTrack.cpp
@@ -75,7 +75,7 @@ VideoTrack::~VideoTrack()
 void VideoTrack::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::VideoTrackPrototype>(realm, ""VideoTrack""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(VideoTrack);
 
     auto id = s_video_track_id_allocator.allocate();
     m_id = MUST(String::number(id));
diff --git a/Userland/Libraries/LibWeb/HTML/VideoTrackList.cpp b/Userland/Libraries/LibWeb/HTML/VideoTrackList.cpp
index ace2faaa54f4..616562de9675 100644
--- a/Userland/Libraries/LibWeb/HTML/VideoTrackList.cpp
+++ b/Userland/Libraries/LibWeb/HTML/VideoTrackList.cpp
@@ -24,7 +24,7 @@ VideoTrackList::VideoTrackList(JS::Realm& realm)
 void VideoTrackList::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::VideoTrackListPrototype>(realm, ""VideoTrackList""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(VideoTrackList);
 }
 
 // https://html.spec.whatwg.org/multipage/media.html#dom-tracklist-item
diff --git a/Userland/Libraries/LibWeb/HTML/Window.cpp b/Userland/Libraries/LibWeb/HTML/Window.cpp
index c80f5affb34f..10c55fe018aa 100644
--- a/Userland/Libraries/LibWeb/HTML/Window.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Window.cpp
@@ -806,7 +806,7 @@ WebIDL::ExceptionOr<void> Window::initialize_web_interfaces(Badge<WindowEnvironm
     auto& realm = this->realm();
     add_window_exposed_interfaces(*this);
 
-    Object::set_prototype(&Bindings::ensure_web_prototype<Bindings::WindowPrototype>(realm, ""Window""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Window);
 
     Bindings::WindowGlobalMixin::initialize(realm, *this);
     WindowOrWorkerGlobalScopeMixin::initialize(realm);
diff --git a/Userland/Libraries/LibWeb/HTML/Worker.cpp b/Userland/Libraries/LibWeb/HTML/Worker.cpp
index bdda083d551f..ca5f5720f41f 100644
--- a/Userland/Libraries/LibWeb/HTML/Worker.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Worker.cpp
@@ -29,7 +29,7 @@ Worker::Worker(String const& script_url, WorkerOptions const& options, DOM::Docu
 void Worker::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::WorkerPrototype>(realm, ""Worker""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Worker);
 }
 
 void Worker::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/HTML/WorkerGlobalScope.cpp b/Userland/Libraries/LibWeb/HTML/WorkerGlobalScope.cpp
index ad3c772385f3..3267c6ccaacb 100644
--- a/Userland/Libraries/LibWeb/HTML/WorkerGlobalScope.cpp
+++ b/Userland/Libraries/LibWeb/HTML/WorkerGlobalScope.cpp
@@ -37,7 +37,7 @@ void WorkerGlobalScope::initialize_web_interfaces(Badge<WorkerEnvironmentSetting
     // FIXME: Handle shared worker
     add_dedicated_worker_exposed_interfaces(*this);
 
-    Object::set_prototype(&Bindings::ensure_web_prototype<Bindings::WorkerGlobalScopePrototype>(realm, ""WorkerGlobalScope""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(WorkerGlobalScope);
 
     WindowOrWorkerGlobalScopeMixin::initialize(realm);
 
diff --git a/Userland/Libraries/LibWeb/HTML/WorkerNavigator.cpp b/Userland/Libraries/LibWeb/HTML/WorkerNavigator.cpp
index 1663e031a0a6..40ccac732e91 100644
--- a/Userland/Libraries/LibWeb/HTML/WorkerNavigator.cpp
+++ b/Userland/Libraries/LibWeb/HTML/WorkerNavigator.cpp
@@ -28,7 +28,7 @@ WorkerNavigator::~WorkerNavigator() = default;
 void WorkerNavigator::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::WorkerNavigatorPrototype>(realm, ""WorkerNavigator""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(WorkerNavigator);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/HighResolutionTime/Performance.cpp b/Userland/Libraries/LibWeb/HighResolutionTime/Performance.cpp
index f11cbd8ef139..bd208624e76c 100644
--- a/Userland/Libraries/LibWeb/HighResolutionTime/Performance.cpp
+++ b/Userland/Libraries/LibWeb/HighResolutionTime/Performance.cpp
@@ -33,7 +33,7 @@ Performance::~Performance() = default;
 void Performance::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::PerformancePrototype>(realm, ""Performance""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Performance);
 }
 
 void Performance::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Internals/Inspector.cpp b/Userland/Libraries/LibWeb/Internals/Inspector.cpp
index 2334bd4520f4..761f2c80f9fa 100644
--- a/Userland/Libraries/LibWeb/Internals/Inspector.cpp
+++ b/Userland/Libraries/LibWeb/Internals/Inspector.cpp
@@ -29,7 +29,7 @@ Inspector::~Inspector() = default;
 void Inspector::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    Object::set_prototype(&Bindings::ensure_web_prototype<Bindings::InspectorPrototype>(realm, ""Inspector""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Inspector);
 }
 
 void Inspector::inspector_loaded()
diff --git a/Userland/Libraries/LibWeb/Internals/Internals.cpp b/Userland/Libraries/LibWeb/Internals/Internals.cpp
index c856b615b6d7..523d21f743fe 100644
--- a/Userland/Libraries/LibWeb/Internals/Internals.cpp
+++ b/Userland/Libraries/LibWeb/Internals/Internals.cpp
@@ -32,7 +32,7 @@ Internals::~Internals() = default;
 void Internals::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    Object::set_prototype(&Bindings::ensure_web_prototype<Bindings::InternalsPrototype>(realm, ""Internals""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Internals);
 }
 
 void Internals::signal_text_test_is_done()
diff --git a/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.cpp b/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.cpp
index 28e4c7336787..4309608dd23b 100644
--- a/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.cpp
+++ b/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserver.cpp
@@ -70,7 +70,7 @@ void IntersectionObserver::finalize()
 void IntersectionObserver::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::IntersectionObserverPrototype>(realm, ""IntersectionObserver""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(IntersectionObserver);
 }
 
 void IntersectionObserver::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserverEntry.cpp b/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserverEntry.cpp
index acf6def535f2..705e2a1ee438 100644
--- a/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserverEntry.cpp
+++ b/Userland/Libraries/LibWeb/IntersectionObserver/IntersectionObserverEntry.cpp
@@ -42,7 +42,7 @@ IntersectionObserverEntry::~IntersectionObserverEntry() = default;
 void IntersectionObserverEntry::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::IntersectionObserverEntryPrototype>(realm, ""IntersectionObserverEntry""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(IntersectionObserverEntry);
 }
 
 void IntersectionObserverEntry::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/MathML/MathMLElement.cpp b/Userland/Libraries/LibWeb/MathML/MathMLElement.cpp
index 06e1fb1b0c58..c6af7588340a 100644
--- a/Userland/Libraries/LibWeb/MathML/MathMLElement.cpp
+++ b/Userland/Libraries/LibWeb/MathML/MathMLElement.cpp
@@ -22,7 +22,7 @@ MathMLElement::MathMLElement(DOM::Document& document, DOM::QualifiedName qualifi
 void MathMLElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::MathMLElementPrototype>(realm, ""MathMLElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(MathMLElement);
 
     m_dataset = HTML::DOMStringMap::create(*this);
 }
diff --git a/Userland/Libraries/LibWeb/NavigationTiming/PerformanceTiming.cpp b/Userland/Libraries/LibWeb/NavigationTiming/PerformanceTiming.cpp
index e259b51030cd..c3a4260c6f9f 100644
--- a/Userland/Libraries/LibWeb/NavigationTiming/PerformanceTiming.cpp
+++ b/Userland/Libraries/LibWeb/NavigationTiming/PerformanceTiming.cpp
@@ -21,7 +21,7 @@ PerformanceTiming::~PerformanceTiming() = default;
 void PerformanceTiming::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::PerformanceTimingPrototype>(realm, ""PerformanceTiming""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(PerformanceTiming);
 }
 
 void PerformanceTiming::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/PerformanceTimeline/PerformanceEntry.cpp b/Userland/Libraries/LibWeb/PerformanceTimeline/PerformanceEntry.cpp
index 22872d449b83..cd89a8569375 100644
--- a/Userland/Libraries/LibWeb/PerformanceTimeline/PerformanceEntry.cpp
+++ b/Userland/Libraries/LibWeb/PerformanceTimeline/PerformanceEntry.cpp
@@ -23,7 +23,7 @@ PerformanceEntry::~PerformanceEntry() = default;
 void PerformanceEntry::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::PerformanceEntryPrototype>(realm, ""PerformanceEntry""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(PerformanceEntry);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/PerformanceTimeline/PerformanceObserver.cpp b/Userland/Libraries/LibWeb/PerformanceTimeline/PerformanceObserver.cpp
index 55ca52f4f9ce..a71807f926c4 100644
--- a/Userland/Libraries/LibWeb/PerformanceTimeline/PerformanceObserver.cpp
+++ b/Userland/Libraries/LibWeb/PerformanceTimeline/PerformanceObserver.cpp
@@ -34,7 +34,7 @@ PerformanceObserver::~PerformanceObserver() = default;
 void PerformanceObserver::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::PerformanceObserverPrototype>(realm, ""PerformanceObserver""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(PerformanceObserver);
 }
 
 void PerformanceObserver::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/PerformanceTimeline/PerformanceObserverEntryList.cpp b/Userland/Libraries/LibWeb/PerformanceTimeline/PerformanceObserverEntryList.cpp
index 4d0fa9be667e..9ada84eb15d4 100644
--- a/Userland/Libraries/LibWeb/PerformanceTimeline/PerformanceObserverEntryList.cpp
+++ b/Userland/Libraries/LibWeb/PerformanceTimeline/PerformanceObserverEntryList.cpp
@@ -26,7 +26,7 @@ PerformanceObserverEntryList::~PerformanceObserverEntryList() = default;
 void PerformanceObserverEntryList::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::PerformanceObserverEntryListPrototype>(realm, ""PerformanceObserverEntryList""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(PerformanceObserverEntryList);
 }
 
 void PerformanceObserverEntryList::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.cpp b/Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.cpp
index 3f0b27726402..d738b14aa529 100644
--- a/Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.cpp
+++ b/Userland/Libraries/LibWeb/RequestIdleCallback/IdleDeadline.cpp
@@ -28,7 +28,7 @@ IdleDeadline::IdleDeadline(JS::Realm& realm, bool did_timeout)
 void IdleDeadline::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::IdleDeadlinePrototype>(realm, ""IdleDeadline""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(IdleDeadline);
 }
 
 IdleDeadline::~IdleDeadline() = default;
diff --git a/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserver.cpp b/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserver.cpp
index f18548b8d576..191867102ec4 100644
--- a/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserver.cpp
+++ b/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserver.cpp
@@ -36,7 +36,7 @@ ResizeObserver::~ResizeObserver() = default;
 void ResizeObserver::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ResizeObserverPrototype>(realm, ""ResizeObserver""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ResizeObserver);
 }
 
 void ResizeObserver::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserverEntry.cpp b/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserverEntry.cpp
index 9f04005fa9f4..2c0a4a5640d0 100644
--- a/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserverEntry.cpp
+++ b/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserverEntry.cpp
@@ -61,7 +61,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<ResizeObserverEntry>> ResizeObserverEntry::
 void ResizeObserverEntry::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ResizeObserverEntryPrototype>(realm, ""ResizeObserverEntry""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ResizeObserverEntry);
 }
 
 void ResizeObserverEntry::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserverSize.cpp b/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserverSize.cpp
index 64cbe591d61f..3b48300efeef 100644
--- a/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserverSize.cpp
+++ b/Userland/Libraries/LibWeb/ResizeObserver/ResizeObserverSize.cpp
@@ -17,7 +17,7 @@ JS_DEFINE_ALLOCATOR(ResizeObserverSize);
 void ResizeObserverSize::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ResizeObserverSizePrototype>(realm, ""ResizeObserverSize""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ResizeObserverSize);
 }
 
 // https://drafts.csswg.org/resize-observer-1/#calculate-box-size
diff --git a/Userland/Libraries/LibWeb/SVG/SVGAnimatedLength.cpp b/Userland/Libraries/LibWeb/SVG/SVGAnimatedLength.cpp
index 7415dfd8f794..4a12507ed00b 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGAnimatedLength.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGAnimatedLength.cpp
@@ -30,7 +30,7 @@ SVGAnimatedLength::~SVGAnimatedLength() = default;
 void SVGAnimatedLength::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGAnimatedLengthPrototype>(realm, ""SVGAnimatedLength""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGAnimatedLength);
 }
 
 void SVGAnimatedLength::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGAnimatedNumber.cpp b/Userland/Libraries/LibWeb/SVG/SVGAnimatedNumber.cpp
index 4107b84a6afa..76bb3f61c47f 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGAnimatedNumber.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGAnimatedNumber.cpp
@@ -28,7 +28,7 @@ SVGAnimatedNumber::~SVGAnimatedNumber() = default;
 void SVGAnimatedNumber::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGAnimatedNumberPrototype>(realm, ""SVGAnimatedNumber""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGAnimatedNumber);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/SVG/SVGAnimatedRect.cpp b/Userland/Libraries/LibWeb/SVG/SVGAnimatedRect.cpp
index 1735c0b2a0fd..521178f9ebdc 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGAnimatedRect.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGAnimatedRect.cpp
@@ -23,7 +23,7 @@ SVGAnimatedRect::~SVGAnimatedRect() = default;
 void SVGAnimatedRect::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGAnimatedRectPrototype>(realm, ""SVGAnimatedRect""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGAnimatedRect);
     m_base_val = Geometry::DOMRect::create(realm, { 0, 0, 0, 0 });
     m_anim_val = Geometry::DOMRect::create(realm, { 0, 0, 0, 0 });
 }
diff --git a/Userland/Libraries/LibWeb/SVG/SVGAnimatedString.cpp b/Userland/Libraries/LibWeb/SVG/SVGAnimatedString.cpp
index 83d1c4a1314d..e2d987c87d10 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGAnimatedString.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGAnimatedString.cpp
@@ -33,7 +33,7 @@ SVGAnimatedString::~SVGAnimatedString() = default;
 void SVGAnimatedString::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGAnimatedStringPrototype>(realm, ""SVGAnimatedString""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGAnimatedString);
 }
 
 void SVGAnimatedString::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGCircleElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGCircleElement.cpp
index 0f2d750238b8..cb3a21b5e46b 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGCircleElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGCircleElement.cpp
@@ -24,7 +24,7 @@ SVGCircleElement::SVGCircleElement(DOM::Document& document, DOM::QualifiedName q
 void SVGCircleElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGCircleElementPrototype>(realm, ""SVGCircleElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGCircleElement);
 }
 
 void SVGCircleElement::apply_presentational_hints(CSS::StyleProperties& style) const
diff --git a/Userland/Libraries/LibWeb/SVG/SVGClipPathElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGClipPathElement.cpp
index a9d61e3d776d..f59b0cfa1856 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGClipPathElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGClipPathElement.cpp
@@ -23,7 +23,7 @@ SVGClipPathElement::~SVGClipPathElement()
 void SVGClipPathElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGClipPathElementPrototype>(realm, ""SVGClipPathElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGClipPathElement);
 }
 
 JS::GCPtr<Layout::Node> SVGClipPathElement::create_layout_node(NonnullRefPtr<CSS::StyleProperties>)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGDefsElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGDefsElement.cpp
index 62457ef9b93e..0300fe017a80 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGDefsElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGDefsElement.cpp
@@ -24,7 +24,7 @@ SVGDefsElement::~SVGDefsElement()
 void SVGDefsElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGDefsElementPrototype>(realm, ""SVGDefsElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGDefsElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/SVG/SVGElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGElement.cpp
index 4d0d1904e49e..b46d94bbc0a3 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGElement.cpp
@@ -23,7 +23,7 @@ SVGElement::SVGElement(DOM::Document& document, DOM::QualifiedName qualified_nam
 void SVGElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGElementPrototype>(realm, ""SVGElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGElement);
 
     m_dataset = HTML::DOMStringMap::create(*this);
 }
diff --git a/Userland/Libraries/LibWeb/SVG/SVGEllipseElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGEllipseElement.cpp
index a0efafc833c8..1672be59be28 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGEllipseElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGEllipseElement.cpp
@@ -21,7 +21,7 @@ SVGEllipseElement::SVGEllipseElement(DOM::Document& document, DOM::QualifiedName
 void SVGEllipseElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGEllipseElementPrototype>(realm, ""SVGEllipseElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGEllipseElement);
 }
 
 void SVGEllipseElement::attribute_changed(FlyString const& name, Optional<String> const& value)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGForeignObjectElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGForeignObjectElement.cpp
index 0829c26ebccb..8804fb3ebf8f 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGForeignObjectElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGForeignObjectElement.cpp
@@ -27,7 +27,7 @@ SVGForeignObjectElement::~SVGForeignObjectElement() = default;
 void SVGForeignObjectElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGForeignObjectElementPrototype>(realm, ""SVGForeignObjectElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGForeignObjectElement);
 
     // FIXME: These never actually get updated!
     m_x = SVGAnimatedLength::create(realm, SVGLength::create(realm, 0, 0), SVGLength::create(realm, 0, 0));
diff --git a/Userland/Libraries/LibWeb/SVG/SVGGeometryElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGGeometryElement.cpp
index 6d796378154b..8cec7a7326e8 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGGeometryElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGGeometryElement.cpp
@@ -18,7 +18,7 @@ SVGGeometryElement::SVGGeometryElement(DOM::Document& document, DOM::QualifiedNa
 void SVGGeometryElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGGeometryElementPrototype>(realm, ""SVGGeometryElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGGeometryElement);
 }
 
 JS::GCPtr<Layout::Node> SVGGeometryElement::create_layout_node(NonnullRefPtr<CSS::StyleProperties> style)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGGradientElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGGradientElement.cpp
index c1a724d5e631..df0b5d20b447 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGGradientElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGGradientElement.cpp
@@ -135,7 +135,7 @@ JS::GCPtr<SVGGradientElement const> SVGGradientElement::linked_gradient(HashTabl
 void SVGGradientElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGGradientElementPrototype>(realm, ""SVGGradientElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGGradientElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp
index d2facaa10c17..c48c899e76f1 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp
@@ -29,7 +29,7 @@ SVGGraphicsElement::SVGGraphicsElement(DOM::Document& document, DOM::QualifiedNa
 void SVGGraphicsElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGGraphicsElementPrototype>(realm, ""SVGGraphicsElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGGraphicsElement);
 }
 
 void SVGGraphicsElement::attribute_changed(FlyString const& name, Optional<String> const& value)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGLength.cpp b/Userland/Libraries/LibWeb/SVG/SVGLength.cpp
index 7ec091617dc1..f68e463727c5 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGLength.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGLength.cpp
@@ -74,7 +74,7 @@ SVGLength::SVGLength(JS::Realm& realm, u8 unit_type, float value)
 void SVGLength::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGLengthPrototype>(realm, ""SVGLength""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGLength);
 }
 
 SVGLength::~SVGLength() = default;
diff --git a/Userland/Libraries/LibWeb/SVG/SVGLineElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGLineElement.cpp
index 55998a3b6a6c..8fe58111c8ae 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGLineElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGLineElement.cpp
@@ -21,7 +21,7 @@ SVGLineElement::SVGLineElement(DOM::Document& document, DOM::QualifiedName quali
 void SVGLineElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGLineElementPrototype>(realm, ""SVGLineElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGLineElement);
 }
 
 void SVGLineElement::attribute_changed(FlyString const& name, Optional<String> const& value)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGLinearGradientElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGLinearGradientElement.cpp
index 2e78b91e39ab..6dbe62f3745c 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGLinearGradientElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGLinearGradientElement.cpp
@@ -23,7 +23,7 @@ SVGLinearGradientElement::SVGLinearGradientElement(DOM::Document& document, DOM:
 void SVGLinearGradientElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGLinearGradientElementPrototype>(realm, ""SVGLinearGradientElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGLinearGradientElement);
 }
 
 void SVGLinearGradientElement::attribute_changed(FlyString const& name, Optional<String> const& value)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGMaskElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGMaskElement.cpp
index cb9006807521..0104c0726ae8 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGMaskElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGMaskElement.cpp
@@ -24,7 +24,7 @@ SVGMaskElement::~SVGMaskElement() = default;
 void SVGMaskElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGMaskElementPrototype>(realm, ""SVGMaskElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGMaskElement);
 }
 
 JS::GCPtr<Layout::Node> SVGMaskElement::create_layout_node(NonnullRefPtr<CSS::StyleProperties>)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGPathElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGPathElement.cpp
index b5685a7f1f75..1b462e27ff83 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGPathElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGPathElement.cpp
@@ -92,7 +92,7 @@ SVGPathElement::SVGPathElement(DOM::Document& document, DOM::QualifiedName quali
 void SVGPathElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGPathElementPrototype>(realm, ""SVGPathElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGPathElement);
 }
 
 void SVGPathElement::attribute_changed(FlyString const& name, Optional<String> const& value)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGPolygonElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGPolygonElement.cpp
index 41c476c15a45..f8808902e730 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGPolygonElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGPolygonElement.cpp
@@ -21,7 +21,7 @@ SVGPolygonElement::SVGPolygonElement(DOM::Document& document, DOM::QualifiedName
 void SVGPolygonElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGPolygonElementPrototype>(realm, ""SVGPolygonElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGPolygonElement);
 }
 
 void SVGPolygonElement::attribute_changed(FlyString const& name, Optional<String> const& value)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGPolylineElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGPolylineElement.cpp
index 0e282d917d3f..0e9ea1d87274 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGPolylineElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGPolylineElement.cpp
@@ -21,7 +21,7 @@ SVGPolylineElement::SVGPolylineElement(DOM::Document& document, DOM::QualifiedNa
 void SVGPolylineElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGPolylineElementPrototype>(realm, ""SVGPolylineElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGPolylineElement);
 }
 
 void SVGPolylineElement::attribute_changed(FlyString const& name, Optional<String> const& value)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGRadialGradientElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGRadialGradientElement.cpp
index f2a282e42aa9..70280c3ae6a0 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGRadialGradientElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGRadialGradientElement.cpp
@@ -20,7 +20,7 @@ SVGRadialGradientElement::SVGRadialGradientElement(DOM::Document& document, DOM:
 void SVGRadialGradientElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGRadialGradientElementPrototype>(realm, ""SVGRadialGradientElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGRadialGradientElement);
 }
 
 void SVGRadialGradientElement::attribute_changed(FlyString const& name, Optional<String> const& value)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGRectElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGRectElement.cpp
index c352a91ebac2..77a9aa976d4b 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGRectElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGRectElement.cpp
@@ -23,7 +23,7 @@ SVGRectElement::SVGRectElement(DOM::Document& document, DOM::QualifiedName quali
 void SVGRectElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGRectElementPrototype>(realm, ""SVGRectElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGRectElement);
 }
 
 void SVGRectElement::attribute_changed(FlyString const& name, Optional<String> const& value)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGSVGElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGSVGElement.cpp
index 35a76c2ab1e8..5d4e709bbe55 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGSVGElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGSVGElement.cpp
@@ -29,7 +29,7 @@ SVGSVGElement::SVGSVGElement(DOM::Document& document, DOM::QualifiedName qualifi
 void SVGSVGElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGSVGElementPrototype>(realm, ""SVGSVGElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGSVGElement);
     m_view_box_for_bindings = heap().allocate<SVGAnimatedRect>(realm, realm);
 }
 
diff --git a/Userland/Libraries/LibWeb/SVG/SVGScriptElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGScriptElement.cpp
index e4f092eaff83..03e1f031a5e3 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGScriptElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGScriptElement.cpp
@@ -21,7 +21,7 @@ SVGScriptElement::SVGScriptElement(DOM::Document& document, DOM::QualifiedName q
 void SVGScriptElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGScriptElementPrototype>(realm, ""SVGScriptElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGScriptElement);
 }
 
 void SVGScriptElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGStopElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGStopElement.cpp
index 4a8147af9d22..a81e4480ffc6 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGStopElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGStopElement.cpp
@@ -68,7 +68,7 @@ JS::NonnullGCPtr<SVGAnimatedNumber> SVGStopElement::offset() const
 void SVGStopElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGStopElementPrototype>(realm, ""SVGStopElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGStopElement);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/SVG/SVGStyleElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGStyleElement.cpp
index 5817156eaae3..114ce9065375 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGStyleElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGStyleElement.cpp
@@ -20,7 +20,7 @@ SVGStyleElement::~SVGStyleElement() = default;
 void SVGStyleElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGStyleElementPrototype>(realm, ""SVGStyleElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGStyleElement);
 }
 
 void SVGStyleElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGSymbolElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGSymbolElement.cpp
index d21da704b700..d59c6b72f41e 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGSymbolElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGSymbolElement.cpp
@@ -27,7 +27,7 @@ SVGSymbolElement::SVGSymbolElement(DOM::Document& document, DOM::QualifiedName q
 void SVGSymbolElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGSymbolElementPrototype>(realm, ""SVGSymbolElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGSymbolElement);
 }
 
 // https://svgwg.org/svg2-draft/struct.html#SymbolNotes
diff --git a/Userland/Libraries/LibWeb/SVG/SVGTSpanElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGTSpanElement.cpp
index c11504b28b69..59761cfe7264 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGTSpanElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGTSpanElement.cpp
@@ -20,7 +20,7 @@ SVGTSpanElement::SVGTSpanElement(DOM::Document& document, DOM::QualifiedName qua
 void SVGTSpanElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGTSpanElementPrototype>(realm, ""SVGTSpanElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGTSpanElement);
 }
 
 JS::GCPtr<Layout::Node> SVGTSpanElement::create_layout_node(NonnullRefPtr<CSS::StyleProperties> style)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGTextContentElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGTextContentElement.cpp
index 38d374c89276..24d4e01688d7 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGTextContentElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGTextContentElement.cpp
@@ -26,7 +26,7 @@ SVGTextContentElement::SVGTextContentElement(DOM::Document& document, DOM::Quali
 void SVGTextContentElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGTextContentElementPrototype>(realm, ""SVGTextContentElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGTextContentElement);
 }
 
 Optional<TextAnchor> SVGTextContentElement::text_anchor() const
diff --git a/Userland/Libraries/LibWeb/SVG/SVGTextElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGTextElement.cpp
index af76a7bc6e12..dac940e67d89 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGTextElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGTextElement.cpp
@@ -19,7 +19,7 @@ SVGTextElement::SVGTextElement(DOM::Document& document, DOM::QualifiedName quali
 void SVGTextElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGTextElementPrototype>(realm, ""SVGTextElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGTextElement);
 }
 
 JS::GCPtr<Layout::Node> SVGTextElement::create_layout_node(NonnullRefPtr<CSS::StyleProperties> style)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGTextPathElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGTextPathElement.cpp
index 38170449574c..ac9fe8b7ce7c 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGTextPathElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGTextPathElement.cpp
@@ -30,7 +30,7 @@ JS::GCPtr<SVGGeometryElement const> SVGTextPathElement::path_or_shape() const
 void SVGTextPathElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGTextPathElementPrototype>(realm, ""SVGTextPathElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGTextPathElement);
 }
 
 void SVGTextPathElement::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGTextPositioningElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGTextPositioningElement.cpp
index 58a2c298cd90..13d8c9ba7c16 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGTextPositioningElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGTextPositioningElement.cpp
@@ -25,7 +25,7 @@ SVGTextPositioningElement::SVGTextPositioningElement(DOM::Document& document, DO
 void SVGTextPositioningElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGTextPositioningElementPrototype>(realm, ""SVGTextPositioningElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGTextPositioningElement);
 }
 
 void SVGTextPositioningElement::attribute_changed(FlyString const& name, Optional<String> const& value)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGTitleElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGTitleElement.cpp
index 0c1783d7eafd..19464011cc61 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGTitleElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGTitleElement.cpp
@@ -21,7 +21,7 @@ SVGTitleElement::SVGTitleElement(DOM::Document& document, DOM::QualifiedName qua
 void SVGTitleElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGTitleElementPrototype>(realm, ""SVGTitleElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGTitleElement);
 }
 
 JS::GCPtr<Layout::Node> SVGTitleElement::create_layout_node(NonnullRefPtr<CSS::StyleProperties>)
diff --git a/Userland/Libraries/LibWeb/SVG/SVGUseElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGUseElement.cpp
index 9aa31151f6fe..37d6a17f2b62 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGUseElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGUseElement.cpp
@@ -28,7 +28,7 @@ SVGUseElement::SVGUseElement(DOM::Document& document, DOM::QualifiedName qualifi
 void SVGUseElement::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SVGUseElementPrototype>(realm, ""SVGUseElement""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(SVGUseElement);
 
     // The shadow tree is open (inspectable by script), but read-only.
     auto shadow_root = heap().allocate<DOM::ShadowRoot>(realm, document(), *this, Bindings::ShadowRootMode::Open);
diff --git a/Userland/Libraries/LibWeb/Selection/Selection.cpp b/Userland/Libraries/LibWeb/Selection/Selection.cpp
index bf90fbe61080..5fc0e7596f4b 100644
--- a/Userland/Libraries/LibWeb/Selection/Selection.cpp
+++ b/Userland/Libraries/LibWeb/Selection/Selection.cpp
@@ -29,7 +29,7 @@ Selection::~Selection() = default;
 void Selection::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::SelectionPrototype>(realm, ""Selection""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(Selection);
 }
 
 // https://w3c.github.io/selection-api/#dfn-empty
diff --git a/Userland/Libraries/LibWeb/Streams/ByteLengthQueuingStrategy.cpp b/Userland/Libraries/LibWeb/Streams/ByteLengthQueuingStrategy.cpp
index 986da72410ad..a7eefe9b3358 100644
--- a/Userland/Libraries/LibWeb/Streams/ByteLengthQueuingStrategy.cpp
+++ b/Userland/Libraries/LibWeb/Streams/ByteLengthQueuingStrategy.cpp
@@ -41,7 +41,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<WebIDL::CallbackType>> ByteLengthQueuingStr
 void ByteLengthQueuingStrategy::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ByteLengthQueuingStrategyPrototype>(realm, ""ByteLengthQueuingStrategy""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ByteLengthQueuingStrategy);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/Streams/CountQueuingStrategy.cpp b/Userland/Libraries/LibWeb/Streams/CountQueuingStrategy.cpp
index 39824f0d7355..9b28ca4a5c30 100644
--- a/Userland/Libraries/LibWeb/Streams/CountQueuingStrategy.cpp
+++ b/Userland/Libraries/LibWeb/Streams/CountQueuingStrategy.cpp
@@ -41,7 +41,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<WebIDL::CallbackType>> CountQueuingStrategy
 void CountQueuingStrategy::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::CountQueuingStrategyPrototype>(realm, ""CountQueuingStrategy""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(CountQueuingStrategy);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/Streams/ReadableByteStreamController.cpp b/Userland/Libraries/LibWeb/Streams/ReadableByteStreamController.cpp
index 243e6383c4f3..df79e0c5f7ea 100644
--- a/Userland/Libraries/LibWeb/Streams/ReadableByteStreamController.cpp
+++ b/Userland/Libraries/LibWeb/Streams/ReadableByteStreamController.cpp
@@ -66,7 +66,7 @@ ReadableByteStreamController::ReadableByteStreamController(JS::Realm& realm)
 void ReadableByteStreamController::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ReadableByteStreamControllerPrototype>(realm, ""ReadableByteStreamController""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ReadableByteStreamController);
 }
 
 // https://streams.spec.whatwg.org/#rbs-controller-enqueue
diff --git a/Userland/Libraries/LibWeb/Streams/ReadableStream.cpp b/Userland/Libraries/LibWeb/Streams/ReadableStream.cpp
index f4eb80abfe4e..bd347de77084 100644
--- a/Userland/Libraries/LibWeb/Streams/ReadableStream.cpp
+++ b/Userland/Libraries/LibWeb/Streams/ReadableStream.cpp
@@ -118,7 +118,7 @@ WebIDL::ExceptionOr<ReadableStreamPair> ReadableStream::tee()
 void ReadableStream::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ReadableStreamPrototype>(realm, ""ReadableStream""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ReadableStream);
 }
 
 void ReadableStream::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBReader.cpp b/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBReader.cpp
index 638871c21441..1c923911ca85 100644
--- a/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBReader.cpp
+++ b/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBReader.cpp
@@ -27,7 +27,7 @@ ReadableStreamBYOBReader::ReadableStreamBYOBReader(JS::Realm& realm)
 void ReadableStreamBYOBReader::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ReadableStreamBYOBReaderPrototype>(realm, ""ReadableStreamBYOBReader""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ReadableStreamBYOBReader);
 }
 
 // https://streams.spec.whatwg.org/#byob-reader-constructor
diff --git a/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBRequest.cpp b/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBRequest.cpp
index d56e9278c2ee..7e87dd3a16f9 100644
--- a/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBRequest.cpp
+++ b/Userland/Libraries/LibWeb/Streams/ReadableStreamBYOBRequest.cpp
@@ -30,7 +30,7 @@ ReadableStreamBYOBRequest::ReadableStreamBYOBRequest(JS::Realm& realm)
 void ReadableStreamBYOBRequest::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ReadableStreamBYOBRequestPrototype>(realm, ""ReadableStreamBYOBRequest""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ReadableStreamBYOBRequest);
 }
 
 void ReadableStreamBYOBRequest::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Streams/ReadableStreamDefaultController.cpp b/Userland/Libraries/LibWeb/Streams/ReadableStreamDefaultController.cpp
index 75995c452240..94903519aea3 100644
--- a/Userland/Libraries/LibWeb/Streams/ReadableStreamDefaultController.cpp
+++ b/Userland/Libraries/LibWeb/Streams/ReadableStreamDefaultController.cpp
@@ -129,7 +129,7 @@ WebIDL::ExceptionOr<void> ReadableStreamDefaultController::release_steps()
 void ReadableStreamDefaultController::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ReadableStreamDefaultControllerPrototype>(realm, ""ReadableStreamDefaultController""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ReadableStreamDefaultController);
 }
 
 void ReadableStreamDefaultController::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Streams/ReadableStreamDefaultReader.cpp b/Userland/Libraries/LibWeb/Streams/ReadableStreamDefaultReader.cpp
index fa2df5f94615..34a0b78786a5 100644
--- a/Userland/Libraries/LibWeb/Streams/ReadableStreamDefaultReader.cpp
+++ b/Userland/Libraries/LibWeb/Streams/ReadableStreamDefaultReader.cpp
@@ -52,7 +52,7 @@ ReadableStreamDefaultReader::ReadableStreamDefaultReader(JS::Realm& realm)
 void ReadableStreamDefaultReader::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ReadableStreamDefaultReaderPrototype>(realm, ""ReadableStreamDefaultReader""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ReadableStreamDefaultReader);
 }
 
 void ReadableStreamDefaultReader::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Streams/TransformStream.cpp b/Userland/Libraries/LibWeb/Streams/TransformStream.cpp
index e7a970097330..470efd695e9e 100644
--- a/Userland/Libraries/LibWeb/Streams/TransformStream.cpp
+++ b/Userland/Libraries/LibWeb/Streams/TransformStream.cpp
@@ -84,7 +84,7 @@ TransformStream::~TransformStream() = default;
 void TransformStream::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::TransformStreamPrototype>(realm, ""TransformStream""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(TransformStream);
 }
 
 void TransformStream::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Streams/TransformStreamDefaultController.cpp b/Userland/Libraries/LibWeb/Streams/TransformStreamDefaultController.cpp
index c856581fb9ff..c825b6569753 100644
--- a/Userland/Libraries/LibWeb/Streams/TransformStreamDefaultController.cpp
+++ b/Userland/Libraries/LibWeb/Streams/TransformStreamDefaultController.cpp
@@ -22,7 +22,7 @@ TransformStreamDefaultController::~TransformStreamDefaultController() = default;
 void TransformStreamDefaultController::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::TransformStreamDefaultControllerPrototype>(realm, ""TransformStreamDefaultController""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(TransformStreamDefaultController);
 }
 
 void TransformStreamDefaultController::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Streams/WritableStream.cpp b/Userland/Libraries/LibWeb/Streams/WritableStream.cpp
index bbad973dc68f..022b70010627 100644
--- a/Userland/Libraries/LibWeb/Streams/WritableStream.cpp
+++ b/Userland/Libraries/LibWeb/Streams/WritableStream.cpp
@@ -108,7 +108,7 @@ WritableStream::WritableStream(JS::Realm& realm)
 void WritableStream::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::WritableStreamPrototype>(realm, ""WritableStream""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(WritableStream);
 }
 
 void WritableStream::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.cpp b/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.cpp
index 574900edd8a8..877f9a9c6548 100644
--- a/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.cpp
+++ b/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.cpp
@@ -128,7 +128,7 @@ WritableStreamDefaultWriter::WritableStreamDefaultWriter(JS::Realm& realm)
 void WritableStreamDefaultWriter::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::WritableStreamDefaultWriterPrototype>(realm, ""WritableStreamDefaultWriter""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(WritableStreamDefaultWriter);
 }
 
 void WritableStreamDefaultWriter::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/UIEvents/FocusEvent.cpp b/Userland/Libraries/LibWeb/UIEvents/FocusEvent.cpp
index 6659dc803ac9..83bfc83de1b3 100644
--- a/Userland/Libraries/LibWeb/UIEvents/FocusEvent.cpp
+++ b/Userland/Libraries/LibWeb/UIEvents/FocusEvent.cpp
@@ -27,7 +27,7 @@ FocusEvent::~FocusEvent() = default;
 void FocusEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::FocusEventPrototype>(realm, ""FocusEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(FocusEvent);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/UIEvents/KeyboardEvent.cpp b/Userland/Libraries/LibWeb/UIEvents/KeyboardEvent.cpp
index fbfda1384a6b..6dd594d230cd 100644
--- a/Userland/Libraries/LibWeb/UIEvents/KeyboardEvent.cpp
+++ b/Userland/Libraries/LibWeb/UIEvents/KeyboardEvent.cpp
@@ -727,7 +727,7 @@ KeyboardEvent::~KeyboardEvent() = default;
 void KeyboardEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::KeyboardEventPrototype>(realm, ""KeyboardEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(KeyboardEvent);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/UIEvents/MouseEvent.cpp b/Userland/Libraries/LibWeb/UIEvents/MouseEvent.cpp
index d7967125799c..8fc26f64a03c 100644
--- a/Userland/Libraries/LibWeb/UIEvents/MouseEvent.cpp
+++ b/Userland/Libraries/LibWeb/UIEvents/MouseEvent.cpp
@@ -53,7 +53,7 @@ MouseEvent::~MouseEvent() = default;
 void MouseEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::MouseEventPrototype>(realm, ""MouseEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(MouseEvent);
 }
 
 bool MouseEvent::get_modifier_state(String const& key_arg) const
diff --git a/Userland/Libraries/LibWeb/UIEvents/UIEvent.cpp b/Userland/Libraries/LibWeb/UIEvents/UIEvent.cpp
index dc53e963e252..c2a25ec07ab0 100644
--- a/Userland/Libraries/LibWeb/UIEvents/UIEvent.cpp
+++ b/Userland/Libraries/LibWeb/UIEvents/UIEvent.cpp
@@ -38,7 +38,7 @@ UIEvent::~UIEvent() = default;
 void UIEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::UIEventPrototype>(realm, ""UIEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(UIEvent);
 }
 
 void UIEvent::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/UIEvents/WheelEvent.cpp b/Userland/Libraries/LibWeb/UIEvents/WheelEvent.cpp
index 21f428b82a6d..9b938ef0b525 100644
--- a/Userland/Libraries/LibWeb/UIEvents/WheelEvent.cpp
+++ b/Userland/Libraries/LibWeb/UIEvents/WheelEvent.cpp
@@ -29,7 +29,7 @@ WheelEvent::~WheelEvent() = default;
 void WheelEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::WheelEventPrototype>(realm, ""WheelEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(WheelEvent);
 }
 
 JS::NonnullGCPtr<WheelEvent> WheelEvent::create(JS::Realm& realm, FlyString const& event_name, WheelEventInit const& event_init, double page_x, double page_y, double offset_x, double offset_y)
diff --git a/Userland/Libraries/LibWeb/UserTiming/PerformanceMark.cpp b/Userland/Libraries/LibWeb/UserTiming/PerformanceMark.cpp
index 8aafdc12dbc4..6ec1f15a52c0 100644
--- a/Userland/Libraries/LibWeb/UserTiming/PerformanceMark.cpp
+++ b/Userland/Libraries/LibWeb/UserTiming/PerformanceMark.cpp
@@ -101,7 +101,7 @@ FlyString const& PerformanceMark::entry_type() const
 void PerformanceMark::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::PerformanceMarkPrototype>(realm, ""PerformanceMark""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(PerformanceMark);
 }
 
 void PerformanceMark::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/UserTiming/PerformanceMeasure.cpp b/Userland/Libraries/LibWeb/UserTiming/PerformanceMeasure.cpp
index a8c5918f1e6f..9aab6ebe8f8c 100644
--- a/Userland/Libraries/LibWeb/UserTiming/PerformanceMeasure.cpp
+++ b/Userland/Libraries/LibWeb/UserTiming/PerformanceMeasure.cpp
@@ -39,7 +39,7 @@ FlyString const& PerformanceMeasure::entry_type() const
 void PerformanceMeasure::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::PerformanceMeasurePrototype>(realm, ""PerformanceMeasure""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(PerformanceMeasure);
 }
 
 void PerformanceMeasure::visit_edges(JS::Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/WebAssembly/Instance.cpp b/Userland/Libraries/LibWeb/WebAssembly/Instance.cpp
index d2178f86d605..6bf56018c626 100644
--- a/Userland/Libraries/LibWeb/WebAssembly/Instance.cpp
+++ b/Userland/Libraries/LibWeb/WebAssembly/Instance.cpp
@@ -45,7 +45,7 @@ void Instance::initialize(JS::Realm& realm)
     auto& vm = this->vm();
 
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::InstancePrototype>(realm, ""WebAssembly.Instance""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE_WITH_CUSTOM_NAME(Instance, WebAssembly.Instance);
 
     auto& instance = *Detail::s_instantiated_modules[m_index];
     auto& cache = Detail::s_module_caches.at(m_index);
diff --git a/Userland/Libraries/LibWeb/WebAssembly/Memory.cpp b/Userland/Libraries/LibWeb/WebAssembly/Memory.cpp
index 0292f96352c6..caed9aa77ddd 100644
--- a/Userland/Libraries/LibWeb/WebAssembly/Memory.cpp
+++ b/Userland/Libraries/LibWeb/WebAssembly/Memory.cpp
@@ -44,7 +44,7 @@ Memory::Memory(JS::Realm& realm, Wasm::MemoryAddress address)
 void Memory::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::MemoryPrototype>(realm, ""WebAssembly.Memory""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE_WITH_CUSTOM_NAME(Memory, WebAssembly.Memory);
 }
 
 // https://webassembly.github.io/spec/js-api/#dom-memory-grow
diff --git a/Userland/Libraries/LibWeb/WebAssembly/Module.cpp b/Userland/Libraries/LibWeb/WebAssembly/Module.cpp
index fda278574ca1..83abf4043d68 100644
--- a/Userland/Libraries/LibWeb/WebAssembly/Module.cpp
+++ b/Userland/Libraries/LibWeb/WebAssembly/Module.cpp
@@ -34,7 +34,7 @@ Module::Module(JS::Realm& realm, size_t index)
 void Module::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ModulePrototype>(realm, ""WebAssembly.Module""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE_WITH_CUSTOM_NAME(Module, WebAssembly.Module);
 }
 
 Wasm::Module const& Module::module() const
diff --git a/Userland/Libraries/LibWeb/WebAssembly/Table.cpp b/Userland/Libraries/LibWeb/WebAssembly/Table.cpp
index 15d4df725d76..986b75a12d76 100644
--- a/Userland/Libraries/LibWeb/WebAssembly/Table.cpp
+++ b/Userland/Libraries/LibWeb/WebAssembly/Table.cpp
@@ -66,7 +66,7 @@ Table::Table(JS::Realm& realm, Wasm::TableAddress address)
 void Table::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::TablePrototype>(realm, ""WebAssembly.Table""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE_WITH_CUSTOM_NAME(Table, WebAssembly.Table);
 }
 
 // https://webassembly.github.io/spec/js-api/#dom-table-grow
diff --git a/Userland/Libraries/LibWeb/WebAudio/AudioContext.cpp b/Userland/Libraries/LibWeb/WebAudio/AudioContext.cpp
index 6d0f24c6cc5b..7fc1ad07f6b7 100644
--- a/Userland/Libraries/LibWeb/WebAudio/AudioContext.cpp
+++ b/Userland/Libraries/LibWeb/WebAudio/AudioContext.cpp
@@ -84,7 +84,7 @@ AudioContext::~AudioContext() = default;
 void AudioContext::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::AudioContextPrototype>(realm, ""AudioContext""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(AudioContext);
 }
 
 void AudioContext::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/WebAudio/BaseAudioContext.cpp b/Userland/Libraries/LibWeb/WebAudio/BaseAudioContext.cpp
index eeaab2a2f9e1..f9bfce66c46c 100644
--- a/Userland/Libraries/LibWeb/WebAudio/BaseAudioContext.cpp
+++ b/Userland/Libraries/LibWeb/WebAudio/BaseAudioContext.cpp
@@ -20,7 +20,7 @@ BaseAudioContext::~BaseAudioContext() = default;
 void BaseAudioContext::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::BaseAudioContextPrototype>(realm, ""BaseAudioContext""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(BaseAudioContext);
 }
 
 void BaseAudioContext::set_onstatechange(WebIDL::CallbackType* event_handler)
diff --git a/Userland/Libraries/LibWeb/WebGL/WebGLContextEvent.cpp b/Userland/Libraries/LibWeb/WebGL/WebGLContextEvent.cpp
index ad338aac5496..0de708ff7487 100644
--- a/Userland/Libraries/LibWeb/WebGL/WebGLContextEvent.cpp
+++ b/Userland/Libraries/LibWeb/WebGL/WebGLContextEvent.cpp
@@ -32,7 +32,7 @@ WebGLContextEvent::~WebGLContextEvent() = default;
 void WebGLContextEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::WebGLContextEventPrototype>(realm, ""WebGLContextEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(WebGLContextEvent);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/WebGL/WebGLRenderingContext.cpp b/Userland/Libraries/LibWeb/WebGL/WebGLRenderingContext.cpp
index a8d92f87417e..8396216257b8 100644
--- a/Userland/Libraries/LibWeb/WebGL/WebGLRenderingContext.cpp
+++ b/Userland/Libraries/LibWeb/WebGL/WebGLRenderingContext.cpp
@@ -65,7 +65,7 @@ WebGLRenderingContext::~WebGLRenderingContext() = default;
 void WebGLRenderingContext::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::WebGLRenderingContextPrototype>(realm, ""WebGLRenderingContext""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(WebGLRenderingContext);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/WebIDL/DOMException.cpp b/Userland/Libraries/LibWeb/WebIDL/DOMException.cpp
index 406538d589c2..824e73528f25 100644
--- a/Userland/Libraries/LibWeb/WebIDL/DOMException.cpp
+++ b/Userland/Libraries/LibWeb/WebIDL/DOMException.cpp
@@ -33,7 +33,7 @@ DOMException::~DOMException() = default;
 void DOMException::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::DOMExceptionPrototype>(realm, ""DOMException""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(DOMException);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/WebSockets/WebSocket.cpp b/Userland/Libraries/LibWeb/WebSockets/WebSocket.cpp
index c8e5c72a5f7d..4feeed2f986a 100644
--- a/Userland/Libraries/LibWeb/WebSockets/WebSocket.cpp
+++ b/Userland/Libraries/LibWeb/WebSockets/WebSocket.cpp
@@ -115,7 +115,7 @@ WebSocket::~WebSocket() = default;
 void WebSocket::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::WebSocketPrototype>(realm, ""WebSocket""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(WebSocket);
 }
 
 ErrorOr<void> WebSocket::establish_web_socket_connection(URL& url_record, Vector<String>& protocols, HTML::EnvironmentSettingsObject& client)
diff --git a/Userland/Libraries/LibWeb/XHR/FormData.cpp b/Userland/Libraries/LibWeb/XHR/FormData.cpp
index 4365b3d8149a..4b9799e4f94a 100644
--- a/Userland/Libraries/LibWeb/XHR/FormData.cpp
+++ b/Userland/Libraries/LibWeb/XHR/FormData.cpp
@@ -51,7 +51,7 @@ FormData::~FormData() = default;
 void FormData::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::FormDataPrototype>(realm, ""FormData""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(FormData);
 }
 
 // https://xhr.spec.whatwg.org/#dom-formdata-append
diff --git a/Userland/Libraries/LibWeb/XHR/FormDataIterator.cpp b/Userland/Libraries/LibWeb/XHR/FormDataIterator.cpp
index 26aa8892757a..606b617c26ff 100644
--- a/Userland/Libraries/LibWeb/XHR/FormDataIterator.cpp
+++ b/Userland/Libraries/LibWeb/XHR/FormDataIterator.cpp
@@ -42,7 +42,7 @@ FormDataIterator::~FormDataIterator() = default;
 void FormDataIterator::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::FormDataIteratorPrototype>(realm, ""FormDataIterator""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(FormDataIterator);
 }
 
 void FormDataIterator::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/XHR/ProgressEvent.cpp b/Userland/Libraries/LibWeb/XHR/ProgressEvent.cpp
index 33808774d7d7..6d10fe7a3c4e 100644
--- a/Userland/Libraries/LibWeb/XHR/ProgressEvent.cpp
+++ b/Userland/Libraries/LibWeb/XHR/ProgressEvent.cpp
@@ -34,7 +34,7 @@ ProgressEvent::~ProgressEvent() = default;
 void ProgressEvent::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::ProgressEventPrototype>(realm, ""ProgressEvent""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(ProgressEvent);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
index 505ea96d8396..7d2dedb932d1 100644
--- a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
+++ b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
@@ -81,7 +81,7 @@ XMLHttpRequest::~XMLHttpRequest() = default;
 void XMLHttpRequest::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::XMLHttpRequestPrototype>(realm, ""XMLHttpRequest""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(XMLHttpRequest);
 }
 
 void XMLHttpRequest::visit_edges(Cell::Visitor& visitor)
diff --git a/Userland/Libraries/LibWeb/XHR/XMLHttpRequestUpload.cpp b/Userland/Libraries/LibWeb/XHR/XMLHttpRequestUpload.cpp
index df81985ab9e4..1da8dab95a7f 100644
--- a/Userland/Libraries/LibWeb/XHR/XMLHttpRequestUpload.cpp
+++ b/Userland/Libraries/LibWeb/XHR/XMLHttpRequestUpload.cpp
@@ -22,7 +22,7 @@ XMLHttpRequestUpload::~XMLHttpRequestUpload() = default;
 void XMLHttpRequestUpload::initialize(JS::Realm& realm)
 {
     Base::initialize(realm);
-    set_prototype(&Bindings::ensure_web_prototype<Bindings::XMLHttpRequestUploadPrototype>(realm, ""XMLHttpRequestUpload""_fly_string));
+    WEB_SET_PROTOTYPE_FOR_INTERFACE(XMLHttpRequestUpload);
 }
 
 }"
5fa40080cdd106666cdf32fc07cfd49b65b66fac,2020-05-18 13:06:00,jarhill0,base: Add peach emoji (U+1F351) 🍑,False,Add peach emoji (U+1F351) 🍑,base,"diff --git a/Base/home/anon/emoji.txt b/Base/home/anon/emoji.txt
index e0901b608b02..83ce4104b7a2 100644
--- a/Base/home/anon/emoji.txt
+++ b/Base/home/anon/emoji.txt
@@ -1,4 +1,5 @@
 🍆 - U+1F346 EGGPLANT
+🍑 - U+1F351 PEACH
 🐞 - U+1F41E LADY BEETLE
 👀 - U+1F440 EYES
 👍 - U+1F44D THUMBS UP SIGN
diff --git a/Base/res/emoji/U+1F351.png b/Base/res/emoji/U+1F351.png
new file mode 100644
index 000000000000..d15245a738e8
Binary files /dev/null and b/Base/res/emoji/U+1F351.png differ"
a832ab0f4e36fd4d12214736d318f3bc7550feb7,2020-04-24 23:13:34,Linus Groh,js: Interrupt running script or REPL evaluation when receiving SIGINT,False,Interrupt running script or REPL evaluation when receiving SIGINT,js,"diff --git a/Userland/js.cpp b/Userland/js.cpp
index bc9cd5bd5ebb..e3135d2c4406 100644
--- a/Userland/js.cpp
+++ b/Userland/js.cpp
@@ -383,6 +383,12 @@ void enable_test_mode(JS::Interpreter& interpreter)
     interpreter.global_object().put_native_function(""load"", ReplObject::load_file);
 }
 
+static Function<void()> interrupt_interpreter;
+void sigint_handler()
+{
+    interrupt_interpreter();
+}
+
 int main(int argc, char** argv)
 {
     bool gc_on_every_allocation = false;
@@ -399,8 +405,15 @@ int main(int argc, char** argv)
     args_parser.add_positional_argument(script_path, ""Path to script file"", ""script"", Core::ArgsParser::Required::No);
     args_parser.parse(argc, argv);
 
+    OwnPtr<JS::Interpreter> interpreter;
+
+    interrupt_interpreter = [&] {
+        auto error = JS::Error::create(interpreter->global_object(), ""Error"", ""Received SIGINT"");
+        interpreter->throw_exception(error);
+    };
+
     if (script_path == nullptr) {
-        auto interpreter = JS::Interpreter::create<ReplObject>();
+        interpreter = JS::Interpreter::create<ReplObject>();
         interpreter->heap().set_should_collect_on_every_allocation(gc_on_every_allocation);
         if (test_mode)
             enable_test_mode(*interpreter);
@@ -408,6 +421,7 @@ int main(int argc, char** argv)
         editor = make<Line::Editor>();
 
         signal(SIGINT, [](int) {
+            sigint_handler();
             editor->interrupted();
         });
 
@@ -620,11 +634,15 @@ int main(int argc, char** argv)
         editor->on_tab_complete_other_token = [complete](auto& value) { return complete(value); };
         repl(*interpreter);
     } else {
-        auto interpreter = JS::Interpreter::create<JS::GlobalObject>();
+        interpreter = JS::Interpreter::create<JS::GlobalObject>();
         interpreter->heap().set_should_collect_on_every_allocation(gc_on_every_allocation);
         if (test_mode)
             enable_test_mode(*interpreter);
 
+        signal(SIGINT, [](int) {
+            sigint_handler();
+        });
+
         auto file = Core::File::construct(script_path);
         if (!file->open(Core::IODevice::ReadOnly)) {
             fprintf(stderr, ""Failed to open %s: %s\n"", script_path, file->error_string());"
631b8e90cd1c271e23d92c46f578fc9cd6dbb81d,2021-09-07 17:28:16,Andreas Kling,kernel: Use KResultOr and TRY() for MasterPTY,False,Use KResultOr and TRY() for MasterPTY,kernel,"diff --git a/Kernel/TTY/MasterPTY.cpp b/Kernel/TTY/MasterPTY.cpp
index d539cbc5f974..20b557392755 100644
--- a/Kernel/TTY/MasterPTY.cpp
+++ b/Kernel/TTY/MasterPTY.cpp
@@ -16,22 +16,12 @@
 
 namespace Kernel {
 
-RefPtr<MasterPTY> MasterPTY::try_create(unsigned int index)
+KResultOr<NonnullRefPtr<MasterPTY>> MasterPTY::try_create(unsigned int index)
 {
-    auto buffer_or_error = DoubleBuffer::try_create();
-    if (buffer_or_error.is_error())
-        return {};
-
-    auto master_pty = adopt_ref_if_nonnull(new (nothrow) MasterPTY(index, buffer_or_error.release_value()));
-    if (!master_pty)
-        return {};
-
-    auto slave_pty = adopt_ref_if_nonnull(new (nothrow) SlavePTY(*master_pty, index));
-    if (!slave_pty)
-        return {};
-
+    auto buffer = TRY(DoubleBuffer::try_create());
+    auto master_pty = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) MasterPTY(index, move(buffer))));
+    auto slave_pty = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) SlavePTY(*master_pty, index)));
     master_pty->m_slave = slave_pty;
-
     return master_pty;
 }
 
diff --git a/Kernel/TTY/MasterPTY.h b/Kernel/TTY/MasterPTY.h
index 677bea7d3a83..0763654ed6b5 100644
--- a/Kernel/TTY/MasterPTY.h
+++ b/Kernel/TTY/MasterPTY.h
@@ -16,7 +16,7 @@ class SlavePTY;
 
 class MasterPTY final : public CharacterDevice {
 public:
-    [[nodiscard]] static RefPtr<MasterPTY> try_create(unsigned index);
+    static KResultOr<NonnullRefPtr<MasterPTY>> try_create(unsigned index);
     virtual ~MasterPTY() override;
 
     unsigned index() const { return m_index; }
diff --git a/Kernel/TTY/PTYMultiplexer.cpp b/Kernel/TTY/PTYMultiplexer.cpp
index 537831b74d57..4cb2e2c10ced 100644
--- a/Kernel/TTY/PTYMultiplexer.cpp
+++ b/Kernel/TTY/PTYMultiplexer.cpp
@@ -42,9 +42,7 @@ KResultOr<NonnullRefPtr<OpenFileDescription>> PTYMultiplexer::open(int options)
             return EBUSY;
 
         auto master_index = freelist.take_last();
-        auto master = MasterPTY::try_create(master_index);
-        if (!master)
-            return ENOMEM;
+        auto master = TRY(MasterPTY::try_create(master_index));
         dbgln_if(PTMX_DEBUG, ""PTYMultiplexer::open: Vending master {}"", master->index());
         auto description = TRY(OpenFileDescription::try_create(*master));
         description->set_rw_mode(options);"
5c0fca0a955c91c41683941a9de159fa87e98446,2019-03-02 13:46:57,Andreas Kling,"filemanager: Make the ""open parent directory"" action actually open ""..""",False,"Make the ""open parent directory"" action actually open ""..""",filemanager,"diff --git a/Applications/FileManager/DirectoryTableView.cpp b/Applications/FileManager/DirectoryTableView.cpp
index 0d49aaaa2684..f689a99ff466 100644
--- a/Applications/FileManager/DirectoryTableView.cpp
+++ b/Applications/FileManager/DirectoryTableView.cpp
@@ -34,3 +34,8 @@ void DirectoryTableView::set_status_message(const String& message)
     if (on_status_message)
         on_status_message(message);
 }
+
+void DirectoryTableView::open_parent_directory()
+{
+    model().open("".."");
+}
diff --git a/Applications/FileManager/DirectoryTableView.h b/Applications/FileManager/DirectoryTableView.h
index 8e80d8350eb9..4d2c369a81dd 100644
--- a/Applications/FileManager/DirectoryTableView.h
+++ b/Applications/FileManager/DirectoryTableView.h
@@ -11,6 +11,7 @@ class DirectoryTableView final : public GTableView {
 
     void open(const String& path);
     String path() const { return model().path(); }
+    void open_parent_directory();
 
     Function<void(const String&)> on_path_change;
     Function<void(String)> on_status_message;
diff --git a/Applications/FileManager/main.cpp b/Applications/FileManager/main.cpp
index 92c9899d0036..ac05d754f938 100644
--- a/Applications/FileManager/main.cpp
+++ b/Applications/FileManager/main.cpp
@@ -25,8 +25,20 @@ int main(int argc, char** argv)
 
     GApplication app(argc, argv);
 
-    auto open_parent_directory_action = GAction::create(""Open parent directory"", GraphicsBitmap::load_from_file(GraphicsBitmap::Format::RGBA32, ""/res/icons/parentdirectory16.rgb"", { 16, 16 }), [] (const GAction&) {
-        dbgprintf(""'Parent directory' action activated!\n"");
+    auto* window = new GWindow;
+    window->set_title(""FileManager"");
+    window->set_rect(20, 200, 640, 480);
+    window->set_should_exit_app_on_close(true);
+
+    auto* widget = new GWidget;
+    widget->set_layout(make<GBoxLayout>(Orientation::Vertical));
+
+    auto* toolbar = new GToolBar(widget);
+    auto* directory_table_view = new DirectoryTableView(widget);
+    auto* statusbar = new GStatusBar(widget);
+
+    auto open_parent_directory_action = GAction::create(""Open parent directory"", GraphicsBitmap::load_from_file(GraphicsBitmap::Format::RGBA32, ""/res/icons/parentdirectory16.rgb"", { 16, 16 }), [directory_table_view] (const GAction&) {
+        directory_table_view->open_parent_directory();
     });
 
     auto mkdir_action = GAction::create(""New directory..."", GraphicsBitmap::load_from_file(GraphicsBitmap::Format::RGBA32, ""/res/icons/mkdir16.rgb"", { 16, 16 }), [] (const GAction&) {
@@ -65,26 +77,11 @@ int main(int argc, char** argv)
 
     app.set_menubar(move(menubar));
 
-    auto* window = new GWindow;
-    window->set_title(""FileManager"");
-    window->set_rect(20, 200, 240, 300);
-
-    auto* widget = new GWidget;
-    window->set_main_widget(widget);
-
-    widget->set_layout(make<GBoxLayout>(Orientation::Vertical));
-
-    auto* toolbar = new GToolBar(widget);
     toolbar->add_action(open_parent_directory_action.copy_ref());
     toolbar->add_action(mkdir_action.copy_ref());
     toolbar->add_action(copy_action.copy_ref());
     toolbar->add_action(delete_action.copy_ref());
 
-    auto* directory_table_view = new DirectoryTableView(widget);
-
-    auto* statusbar = new GStatusBar(widget);
-    statusbar->set_text(""Welcome!"");
-
     directory_table_view->on_path_change = [window] (const String& new_path) {
         window->set_title(String::format(""FileManager: %s"", new_path.characters()));
     };
@@ -96,7 +93,7 @@ int main(int argc, char** argv)
     directory_table_view->open(""/"");
     directory_table_view->set_focus(true);
 
-    window->set_should_exit_app_on_close(true);
+    window->set_main_widget(widget);
     window->show();
 
     return app.exec();"
7953bd839175696cc55a56969f0bff9598e08fcf,2022-06-22 22:06:17,Andreas Kling,"libweb: Implement ""transferred size suggestion"" for flex items",False,"Implement ""transferred size suggestion"" for flex items",libweb,"diff --git a/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
index 5f5afa99b00d..eb80adeee422 100644
--- a/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
@@ -654,6 +654,22 @@ float FlexFormattingContext::content_size_suggestion(FlexItem const& item) const
     return calculate_min_and_max_content_height(item.box).min_content_size;
 }
 
+// https://drafts.csswg.org/css-flexbox-1/#transferred-size-suggestion
+Optional<float> FlexFormattingContext::transferred_size_suggestion(FlexItem const& item) const
+{
+    // If the item has a preferred aspect ratio and its preferred cross size is definite,
+    // then the transferred size suggestion is that size
+    // (clamped by its minimum and maximum cross sizes if they are definite), converted through the aspect ratio.
+    if (item.box.has_intrinsic_aspect_ratio() && has_definite_cross_size(item.box)) {
+        auto aspect_ratio = item.box.intrinsic_aspect_ratio().value();
+        // FIXME: Clamp cross size to min/max cross size before this conversion.
+        return resolved_definite_cross_size(item.box) * aspect_ratio;
+    }
+
+    // It is otherwise undefined.
+    return {};
+}
+
 // https://drafts.csswg.org/css-flexbox-1/#content-based-minimum-size
 float FlexFormattingContext::content_based_minimum_size(FlexItem const& item) const
 {
@@ -664,8 +680,13 @@ float FlexFormattingContext::content_based_minimum_size(FlexItem const& item) co
             return min(specified_size_suggestion.value(), content_size_suggestion(item));
         }
 
-        // FIXME: otherwise, the smaller of its transferred size suggestion and its content size suggestion
-        //        if the element is replaced and its transferred size suggestion exists;
+        // otherwise, the smaller of its transferred size suggestion and its content size suggestion
+        // if the element is replaced and its transferred size suggestion exists;
+        if (item.box.is_replaced_box()) {
+            if (auto transferred_size_suggestion = this->transferred_size_suggestion(item); transferred_size_suggestion.has_value()) {
+                return min(transferred_size_suggestion.value(), content_size_suggestion(item));
+            }
+        }
 
         // otherwise its content size suggestion.
         return content_size_suggestion(item);
diff --git a/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.h b/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.h
index d997bdd9731c..0797d9546009 100644
--- a/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.h
+++ b/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.h
@@ -82,6 +82,7 @@ class FlexFormattingContext final : public FormattingContext {
     float automatic_minimum_size(FlexItem const&) const;
     float content_based_minimum_size(FlexItem const&) const;
     Optional<float> specified_size_suggestion(FlexItem const&) const;
+    Optional<float> transferred_size_suggestion(FlexItem const&) const;
     float content_size_suggestion(FlexItem const&) const;
 
     void set_main_size(Box const&, float size);"
d2b8686ae4807ab2791c20e8db7bab700d6e5f15,2022-04-13 02:33:46,Sam Atkins,libweb: Add Formatter for ComponentValues,False,Add Formatter for ComponentValues,libweb,"diff --git a/Userland/Libraries/LibWeb/CSS/Parser/ComponentValue.h b/Userland/Libraries/LibWeb/CSS/Parser/ComponentValue.h
index 30fa3fa52c59..0c8a49544bd6 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/ComponentValue.h
+++ b/Userland/Libraries/LibWeb/CSS/Parser/ComponentValue.h
@@ -44,3 +44,11 @@ class ComponentValue {
     Variant<Token, NonnullRefPtr<StyleFunctionRule>, NonnullRefPtr<StyleBlockRule>> m_value;
 };
 }
+
+template<>
+struct AK::Formatter<Web::CSS::Parser::ComponentValue> : Formatter<StringView> {
+    ErrorOr<void> format(FormatBuilder& builder, Web::CSS::Parser::ComponentValue const& component_value)
+    {
+        return Formatter<StringView>::format(builder, component_value.to_string());
+    }
+};"
68576bcf1b91306790eaf1a5b0eee7c42b51fb60,2021-01-31 15:36:00,Andreas Kling,libelf: Call mmap() before constructing the DynamicLoader object,False,Call mmap() before constructing the DynamicLoader object,libelf,"diff --git a/Userland/Libraries/LibC/dlfcn.cpp b/Userland/Libraries/LibC/dlfcn.cpp
index bcf6de70ae3c..2a52042804ff 100644
--- a/Userland/Libraries/LibC/dlfcn.cpp
+++ b/Userland/Libraries/LibC/dlfcn.cpp
@@ -24,14 +24,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <assert.h>
-#include <dlfcn.h>
-#include <fcntl.h>
-#include <mman.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/stat.h>
-
 #include <AK/HashMap.h>
 #include <AK/LexicalPath.h>
 #include <AK/RefPtr.h>
@@ -39,6 +31,11 @@
 #include <AK/String.h>
 #include <AK/StringBuilder.h>
 #include <LibELF/DynamicLoader.h>
+#include <assert.h>
+#include <dlfcn.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
 
 // NOTE: The string here should never include a trailing newline (according to POSIX)
 String g_dlerror_msg;
@@ -85,18 +82,8 @@ void* dlopen(const char* filename, int flags)
 
     ScopeGuard close_fd_guard([fd]() { close(fd); });
 
-    struct stat file_stats {
-    };
-
-    int ret = fstat(fd, &file_stats);
-    if (ret < 0) {
-        g_dlerror_msg = String::formatted(""Unable to stat file {}"", filename);
-        return nullptr;
-    }
-
-    auto loader = ELF::DynamicLoader::construct(filename, fd, file_stats.st_size);
-
-    if (!loader->is_valid()) {
+    auto loader = ELF::DynamicLoader::try_create(fd, filename);
+    if (!loader || !loader->is_valid()) {
         g_dlerror_msg = String::formatted(""{} is not a valid ELF dynamic shared object!"", filename);
         return nullptr;
     }
diff --git a/Userland/Libraries/LibELF/DynamicLinker.cpp b/Userland/Libraries/LibELF/DynamicLinker.cpp
index 81349606ab04..8fa91231fb6c 100644
--- a/Userland/Libraries/LibELF/DynamicLinker.cpp
+++ b/Userland/Libraries/LibELF/DynamicLinker.cpp
@@ -35,16 +35,14 @@
 #include <LibC/stdio.h>
 #include <LibC/sys/internals.h>
 #include <LibC/unistd.h>
-#include <LibCore/File.h>
 #include <LibELF/AuxiliaryVector.h>
 #include <LibELF/DynamicLinker.h>
 #include <LibELF/DynamicLoader.h>
 #include <LibELF/DynamicObject.h>
 #include <LibELF/Image.h>
-#include <LibELF/exec_elf.h>
 #include <dlfcn.h>
+#include <fcntl.h>
 #include <string.h>
-#include <sys/stat.h>
 #include <sys/types.h>
 
 namespace ELF {
@@ -84,14 +82,14 @@ Optional<DynamicObject::SymbolLookupResult> DynamicLinker::lookup_global_symbol(
 
 static void map_library(const String& name, int fd)
 {
-    struct stat lib_stat;
-    int rc = fstat(fd, &lib_stat);
-    ASSERT(!rc);
-
-    auto loader = ELF::DynamicLoader::construct(name.characters(), fd, lib_stat.st_size);
+    auto loader = ELF::DynamicLoader::try_create(fd, name);
+    if (!loader) {
+        dbgln(""Failed to create ELF::DynamicLoader for fd={}, name={}"", fd, name);
+        ASSERT_NOT_REACHED();
+    }
     loader->set_tls_offset(g_current_tls_offset);
 
-    g_loaders.set(name, loader);
+    g_loaders.set(name, *loader);
 
     g_current_tls_offset += loader->tls_size();
 }
diff --git a/Userland/Libraries/LibELF/DynamicLoader.cpp b/Userland/Libraries/LibELF/DynamicLoader.cpp
index b7c98085c8e6..5429c99fadd0 100644
--- a/Userland/Libraries/LibELF/DynamicLoader.cpp
+++ b/Userland/Libraries/LibELF/DynamicLoader.cpp
@@ -30,13 +30,13 @@
 #include <AK/StringBuilder.h>
 #include <LibELF/DynamicLoader.h>
 #include <LibELF/Validation.h>
-
 #include <assert.h>
 #include <dlfcn.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/mman.h>
+#include <sys/stat.h>
 
 #ifndef __serenity__
 static void* mmap_with_name(void* addr, size_t length, int prot, int flags, int fd, off_t offset, const char*)
@@ -51,38 +51,45 @@ namespace ELF {
 
 static bool s_always_bind_now = false;
 
-NonnullRefPtr<DynamicLoader> DynamicLoader::construct(const char* filename, int fd, size_t size)
+RefPtr<DynamicLoader> DynamicLoader::try_create(int fd, String filename)
 {
-    return adopt(*new DynamicLoader(filename, fd, size));
-}
+    struct stat stat;
+    if (fstat(fd, &stat) < 0) {
+        perror(""DynamicLoader::try_create fstat"");
+        return {};
+    }
 
-void* DynamicLoader::do_mmap(int fd, size_t size, const String& name)
-{
+    ASSERT(stat.st_size >= 0);
+    size_t size = static_cast<size_t>(stat.st_size);
     if (size < sizeof(Elf32_Ehdr))
-        return MAP_FAILED;
+        return {};
 
-    String file_mmap_name = String::formatted(""ELF_DYN: {}"", name);
-    return mmap_with_name(nullptr, size, PROT_READ, MAP_PRIVATE, fd, 0, file_mmap_name.characters());
+    String file_mmap_name = String::formatted(""ELF_DYN: {}"", filename);
+    auto* data = mmap_with_name(nullptr, size, PROT_READ, MAP_PRIVATE, fd, 0, file_mmap_name.characters());
+    if (data == MAP_FAILED) {
+        perror(""DynamicLoader::try_create mmap"");
+        return {};
+    }
+
+    return adopt(*new DynamicLoader(fd, move(filename), data, size));
 }
 
-DynamicLoader::DynamicLoader(const char* filename, int fd, size_t size)
-    : m_filename(filename)
+DynamicLoader::DynamicLoader(int fd, String filename, void* data, size_t size)
+    : m_filename(move(filename))
     , m_file_size(size)
     , m_image_fd(fd)
-    , m_file_mapping(do_mmap(m_image_fd, m_file_size, m_filename))
-    , m_elf_image((u8*)m_file_mapping, m_file_size)
+    , m_file_data(data)
+    , m_elf_image((u8*)m_file_data, m_file_size)
 {
-
-    if (m_file_mapping == MAP_FAILED) {
-        m_valid = false;
-        return;
-    }
-
     m_tls_size = calculate_tls_size();
-
     m_valid = validate();
 }
 
+DynamicLoader::~DynamicLoader()
+{
+    munmap(m_file_data, m_file_size);
+}
+
 const DynamicObject& DynamicLoader::dynamic_object() const
 {
     if (!m_cached_dynamic_object) {
@@ -115,15 +122,8 @@ size_t DynamicLoader::calculate_tls_size() const
 
 bool DynamicLoader::validate()
 {
-    auto* elf_header = (Elf32_Ehdr*)m_file_mapping;
-    return validate_elf_header(*elf_header, m_file_size) && validate_program_headers(*elf_header, m_file_size, (u8*)m_file_mapping, m_file_size, &m_program_interpreter);
-}
-
-DynamicLoader::~DynamicLoader()
-{
-    if (MAP_FAILED != m_file_mapping)
-        munmap(m_file_mapping, m_file_size);
-    close(m_image_fd);
+    auto* elf_header = (Elf32_Ehdr*)m_file_data;
+    return validate_elf_header(*elf_header, m_file_size) && validate_program_headers(*elf_header, m_file_size, (u8*)m_file_data, m_file_size, &m_program_interpreter);
 }
 
 void* DynamicLoader::symbol_for_name(const char* name)
@@ -338,7 +338,7 @@ void DynamicLoader::load_program_headers()
     else
         data_segment_start = data_region.value().desired_load_address();
 
-    memcpy(data_segment_start.as_ptr(), (u8*)m_file_mapping + data_region.value().offset(), data_region.value().size_in_image());
+    memcpy(data_segment_start.as_ptr(), (u8*)m_file_data + data_region.value().offset(), data_region.value().size_in_image());
 
     // FIXME: Initialize the values in the TLS section. Currently, it is zeroed.
 }
diff --git a/Userland/Libraries/LibELF/DynamicLoader.h b/Userland/Libraries/LibELF/DynamicLoader.h
index 69f1144296d1..896a7e215817 100644
--- a/Userland/Libraries/LibELF/DynamicLoader.h
+++ b/Userland/Libraries/LibELF/DynamicLoader.h
@@ -42,8 +42,7 @@ namespace ELF {
 
 class DynamicLoader : public RefCounted<DynamicLoader> {
 public:
-    static NonnullRefPtr<DynamicLoader> construct(const char* filename, int fd, size_t file_size);
-
+    static RefPtr<DynamicLoader> try_create(int fd, String filename);
     ~DynamicLoader();
 
     bool is_valid() const { return m_valid; }
@@ -79,6 +78,8 @@ class DynamicLoader : public RefCounted<DynamicLoader> {
     bool is_dynamic() const { return m_elf_image.is_dynamic(); }
 
 private:
+    DynamicLoader(int fd, String filename, void* file_data, size_t file_size);
+
     class ProgramHeaderRegion {
     public:
         void set_program_header(const Elf32_Phdr& header) { m_program_header = header; }
@@ -105,11 +106,8 @@ class DynamicLoader : public RefCounted<DynamicLoader> {
         Elf32_Phdr m_program_header; // Explicitly a copy of the PHDR in the image
     };
 
-    static void* do_mmap(int fd, size_t size, const String& name);
     const DynamicObject& dynamic_object() const;
 
-    explicit DynamicLoader(const char* filename, int fd, size_t file_size);
-
     // Stage 1
     void load_program_headers();
 
@@ -137,7 +135,7 @@ class DynamicLoader : public RefCounted<DynamicLoader> {
     String m_program_interpreter;
     size_t m_file_size { 0 };
     int m_image_fd { -1 };
-    void* m_file_mapping { MAP_FAILED };
+    void* m_file_data { nullptr };
     ELF::Image m_elf_image;
     bool m_valid { true };"
cf64118821cb3606eebe86239d137a9cd742d4d3,2024-07-04 07:36:13,Daeraxa,documentation: Add libavcodec-free-devel for Fedora build,False,Add libavcodec-free-devel for Fedora build,documentation,"diff --git a/Documentation/BuildInstructionsLadybird.md b/Documentation/BuildInstructionsLadybird.md
index c731ce9b2dc3..e502bf7e5b96 100644
--- a/Documentation/BuildInstructionsLadybird.md
+++ b/Documentation/BuildInstructionsLadybird.md
@@ -47,7 +47,7 @@ sudo pacman -S --needed base-devel cmake ffmpeg libgl ninja qt6-base qt6-tools q
 
 On Fedora or derivatives:
 ```
-sudo dnf install cmake libglvnd-devel ninja-build qt6-qtbase-devel qt6-qttools-devel qt6-qtwayland-devel qt6-qtmultimedia-devel ccache liberation-sans-fonts curl zip unzip tar autoconf-archive
+sudo dnf install cmake libglvnd-devel ninja-build qt6-qtbase-devel qt6-qttools-devel qt6-qtwayland-devel qt6-qtmultimedia-devel ccache liberation-sans-fonts curl zip unzip tar autoconf-archive libavcodec-free-devel
 ```
 
 On openSUSE:"
688dd9ea66b83fcba6124ddf7d901e227599cfe8,2020-04-11 13:32:31,Liav A,kernel: Simplify a message in PATAChannel::create(),False,Simplify a message in PATAChannel::create(),kernel,"diff --git a/Kernel/Devices/PATAChannel.cpp b/Kernel/Devices/PATAChannel.cpp
index 7d649ddf2b97..b7ed53b87fd6 100644
--- a/Kernel/Devices/PATAChannel.cpp
+++ b/Kernel/Devices/PATAChannel.cpp
@@ -121,7 +121,7 @@ OwnPtr<PATAChannel> PATAChannel::create(ChannelType type, bool force_pio)
     PCI::enumerate_all([&](const PCI::Address& address, PCI::ID id) {
         if (PCI::get_class(address) == PCI_Mass_Storage_Class && PCI::get_subclass(address) == PCI_IDE_Controller_Subclass) {
             pci_address = address;
-            klog() << ""PATAChannel: PATA Controller found! id="" << String::format(""%w"", id.vendor_id) << "":"" << String::format(""%w"", id.device_id);
+            klog() << ""PATAChannel: PATA Controller found, ID "" << id;
         }
     });
     return make<PATAChannel>(pci_address, type, force_pio);"
247951e09c8bcc6e14e50cf4e22b3ecf2d676209,2022-07-08 16:07:01,Kenneth Myhra,libweb: Add URLSearchParams as part of union type for XHR::send(),False,Add URLSearchParams as part of union type for XHR::send(),libweb,"diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp
index d8b696757910..994f9a06224b 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp
@@ -52,6 +52,8 @@ static bool is_wrappable_type(Type const& type)
         return true;
     if (type.name == ""WebGLRenderingContext"")
         return true;
+    if (type.name == ""URLSearchParams"")
+        return true;
     return false;
 }
 
diff --git a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
index 06a69c5666d7..62dbc8d64b12 100644
--- a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
+++ b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
@@ -3,6 +3,7 @@
  * Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
  * Copyright (c) 2022, Luke Wilde <lukew@serenityos.org>
  * Copyright (c) 2022, Ali Mohammad Pur <mpfard@serenityos.org>
+ * Copyright (c) 2022, Kenneth Myhra <kennethmyhra@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -426,6 +427,21 @@ static bool is_header_value(String const& header_value)
     return true;
 }
 
+static XMLHttpRequest::BodyWithType safely_extract_body(XMLHttpRequestBodyInit& body)
+{
+    if (body.has<NonnullRefPtr<URL::URLSearchParams>>()) {
+        return {
+            body.get<NonnullRefPtr<URL::URLSearchParams>>()->to_string().to_byte_buffer(),
+            ""application/x-www-form-urlencoded;charset=UTF-8""
+        };
+    }
+    VERIFY(body.has<String>());
+    return {
+        body.get<String>().to_byte_buffer(),
+        ""text/plain;charset=UTF-8""
+    };
+}
+
 // https://xhr.spec.whatwg.org/#dom-xmlhttprequest-setrequestheader
 DOM::ExceptionOr<void> XMLHttpRequest::set_request_header(String const& name, String const& value)
 {
@@ -547,7 +563,7 @@ DOM::ExceptionOr<void> XMLHttpRequest::open(String const& method, String const&
 }
 
 // https://xhr.spec.whatwg.org/#dom-xmlhttprequest-send
-DOM::ExceptionOr<void> XMLHttpRequest::send(String body)
+DOM::ExceptionOr<void> XMLHttpRequest::send(Optional<XMLHttpRequestBodyInit> body)
 {
     if (m_ready_state != ReadyState::Opened)
         return DOM::InvalidStateError::create(""XHR readyState is not OPENED"");
@@ -559,6 +575,8 @@ DOM::ExceptionOr<void> XMLHttpRequest::send(String body)
     if (m_method.is_one_of(""GET""sv, ""HEAD""sv))
         body = {};
 
+    auto body_with_type = body.has_value() ? safely_extract_body(body.value()) : XMLHttpRequest::BodyWithType {};
+
     AK::URL request_url = m_window->associated_document().parse_url(m_url.to_string());
     dbgln(""XHR send from {} to {}"", m_window->associated_document().url(), request_url);
 
@@ -578,8 +596,11 @@ DOM::ExceptionOr<void> XMLHttpRequest::send(String body)
 
     auto request = LoadRequest::create_for_url_on_page(request_url, m_window->page());
     request.set_method(m_method);
-    if (!body.is_null())
-        request.set_body(body.to_byte_buffer());
+    if (!body_with_type.body.is_empty()) {
+        request.set_body(body_with_type.body);
+        if (!body_with_type.type.is_empty())
+            request.set_header(""Content-Type"", body_with_type.type);
+    }
     for (auto& it : m_request_headers)
         request.set_header(it.key, it.value);
 
diff --git a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.h b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.h
index 678e83ce8ae3..78197897c156 100644
--- a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.h
+++ b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2022, Kenneth Myhra <kennethmyhra@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -15,12 +16,15 @@
 #include <LibWeb/DOM/EventTarget.h>
 #include <LibWeb/DOM/ExceptionOr.h>
 #include <LibWeb/MimeSniff/MimeType.h>
+#include <LibWeb/URL/URLSearchParams.h>
 #include <LibWeb/XHR/XMLHttpRequestEventTarget.h>
 
 namespace Web::XHR {
 
 static constexpr Array<u8, 4> http_whitespace_bytes = { '\t', '\n', '\r', ' ' };
 
+using XMLHttpRequestBodyInit = Variant<NonnullRefPtr<URL::URLSearchParams>, String>;
+
 class XMLHttpRequest final
     : public RefCounted<XMLHttpRequest>
     , public Weakable<XMLHttpRequest>
@@ -34,6 +38,11 @@ class XMLHttpRequest final
         Done = 4,
     };
 
+    struct BodyWithType {
+        ByteBuffer body;
+        String type;
+    };
+
     using WrapperType = Bindings::XMLHttpRequestWrapper;
 
     static NonnullRefPtr<XMLHttpRequest> create(HTML::Window& window)
@@ -58,7 +67,7 @@ class XMLHttpRequest final
 
     DOM::ExceptionOr<void> open(String const& method, String const& url);
     DOM::ExceptionOr<void> open(String const& method, String const& url, bool async, String const& username = {}, String const& password = {});
-    DOM::ExceptionOr<void> send(String body);
+    DOM::ExceptionOr<void> send(Optional<XMLHttpRequestBodyInit> body);
 
     DOM::ExceptionOr<void> set_request_header(String const& header, String const& value);
     void set_response_type(Bindings::XMLHttpRequestResponseType type) { m_response_type = type; }
diff --git a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.idl b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.idl
index 56d1c9d1f759..c712fd9aa2ef 100644
--- a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.idl
+++ b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.idl
@@ -1,5 +1,8 @@
 #import <XHR/XMLHttpRequestEventTarget.idl>
 #import <DOM/EventHandler.idl>
+#import <URL/URLSearchParams.idl>
+
+typedef (URLSearchParams or USVString) XMLHttpRequestBodyInit;
 
 enum XMLHttpRequestResponseType {
   """",
@@ -30,7 +33,7 @@ interface XMLHttpRequest : XMLHttpRequestEventTarget {
     undefined open(DOMString method, DOMString url);
     undefined open(ByteString method, USVString url, boolean async, optional USVString? username = {}, optional USVString? password = {});
     undefined setRequestHeader(DOMString name, DOMString value);
-    undefined send(optional USVString body = {});
+    undefined send(optional XMLHttpRequestBodyInit? body = null);
 
     ByteString? getResponseHeader(ByteString name);
     ByteString getAllResponseHeaders();"
cfae6523be04d53151083930cff327b94f8702bb,2024-04-04 00:40:01,stelar7,libweb: Implement skeleton of SubtleCrypto.sign,False,Implement skeleton of SubtleCrypto.sign,libweb,"diff --git a/Userland/Libraries/LibWeb/Crypto/CryptoAlgorithms.h b/Userland/Libraries/LibWeb/Crypto/CryptoAlgorithms.h
index 9cc6325a3941..0ac9df25674f 100644
--- a/Userland/Libraries/LibWeb/Crypto/CryptoAlgorithms.h
+++ b/Userland/Libraries/LibWeb/Crypto/CryptoAlgorithms.h
@@ -131,6 +131,11 @@ class AlgorithmMethods {
         return WebIDL::NotSupportedError::create(m_realm, ""decrypt is not supported""_fly_string);
     }
 
+    virtual WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::ArrayBuffer>> sign(AlgorithmParams const&, JS::NonnullGCPtr<CryptoKey>, ByteBuffer const&)
+    {
+        return WebIDL::NotSupportedError::create(m_realm, ""sign is not supported""_fly_string);
+    }
+
     virtual WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::ArrayBuffer>> digest(AlgorithmParams const&, ByteBuffer const&)
     {
         return WebIDL::NotSupportedError::create(m_realm, ""digest is not supported""_fly_string);
diff --git a/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.cpp b/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
index 680b5d4151de..e0af98a4a258 100644
--- a/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
+++ b/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
@@ -463,6 +463,63 @@ JS::ThrowCompletionOr<JS::NonnullGCPtr<JS::Promise>> SubtleCrypto::export_key(Bi
     return verify_cast<JS::Promise>(*promise->promise());
 }
 
+// https://w3c.github.io/webcrypto/#dfn-SubtleCrypto-method-sign
+JS::ThrowCompletionOr<JS::NonnullGCPtr<JS::Promise>> SubtleCrypto::sign(AlgorithmIdentifier const& algorithm, JS::NonnullGCPtr<CryptoKey> key, JS::Handle<WebIDL::BufferSource> const& data_parameter)
+{
+    auto& realm = this->realm();
+    auto& vm = this->vm();
+    // 1. Let algorithm and key be the algorithm and key parameters passed to the sign() method, respectively.
+
+    // 2. Let data be the result of getting a copy of the bytes held by the data parameter passed to the sign() method.
+    auto data_or_error = WebIDL::get_buffer_source_copy(*data_parameter->raw_object());
+    if (data_or_error.is_error()) {
+        VERIFY(data_or_error.error().code() == ENOMEM);
+        return WebIDL::create_rejected_promise_from_exception(realm, vm.throw_completion<JS::InternalError>(vm.error_message(JS::VM::ErrorMessage::OutOfMemory)));
+    }
+    auto data = data_or_error.release_value();
+
+    // 3. Let normalizedAlgorithm be the result of normalizing an algorithm, with alg set to algorithm and op set to ""sign"".
+    auto normalized_algorithm = normalize_an_algorithm(realm, algorithm, ""sign""_string);
+
+    // 4. If an error occurred, return a Promise rejected with normalizedAlgorithm.
+    if (normalized_algorithm.is_error())
+        return WebIDL::create_rejected_promise_from_exception(realm, normalized_algorithm.release_error());
+
+    // 5. Let promise be a new Promise.
+    auto promise = WebIDL::create_promise(realm);
+
+    // 6. Return promise and perform the remaining steps in parallel.
+
+    Platform::EventLoopPlugin::the().deferred_invoke([&realm, normalized_algorithm = normalized_algorithm.release_value(), promise, key, data = move(data)]() -> void {
+        HTML::TemporaryExecutionContext context(Bindings::host_defined_environment_settings_object(realm), HTML::TemporaryExecutionContext::CallbacksEnabled::Yes);
+        // 7. If the following steps or referenced procedures say to throw an error, reject promise with the returned error and then terminate the algorithm.
+
+        // 8. If the name member of normalizedAlgorithm is not equal to the name attribute of the [[algorithm]] internal slot of key then throw an InvalidAccessError.
+        if (normalized_algorithm.parameter->name != key->algorithm_name()) {
+            WebIDL::reject_promise(realm, promise, WebIDL::InvalidAccessError::create(realm, ""Algorithm mismatch""_fly_string));
+            return;
+        }
+
+        // 9. If the [[usages]] internal slot of key does not contain an entry that is ""sign"", then throw an InvalidAccessError.
+        if (!key->internal_usages().contains_slow(Bindings::KeyUsage::Sign)) {
+            WebIDL::reject_promise(realm, promise, WebIDL::InvalidAccessError::create(realm, ""Key does not support signing""_fly_string));
+            return;
+        }
+
+        // 10. Let result be the result of performing the sign operation specified by normalizedAlgorithm using key and algorithm and with data as message.
+        auto result = normalized_algorithm.methods->sign(*normalized_algorithm.parameter, key, data);
+        if (result.is_error()) {
+            WebIDL::reject_promise(realm, promise, Bindings::dom_exception_to_throw_completion(realm.vm(), result.release_error()).release_value().value());
+            return;
+        }
+
+        // 9. Resolve promise with result.
+        WebIDL::resolve_promise(realm, promise, result.release_value());
+    });
+
+    return verify_cast<JS::Promise>(*promise->promise());
+}
+
 SupportedAlgorithmsMap& supported_algorithms_internal()
 {
     static SupportedAlgorithmsMap s_supported_algorithms;
diff --git a/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.h b/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.h
index 074be20e91b8..6db39dab3eed 100644
--- a/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.h
+++ b/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.h
@@ -29,6 +29,7 @@ class SubtleCrypto final : public Bindings::PlatformObject {
 
     JS::NonnullGCPtr<JS::Promise> encrypt(AlgorithmIdentifier const& algorithm, JS::NonnullGCPtr<CryptoKey> key, JS::Handle<WebIDL::BufferSource> const& data_parameter);
     JS::NonnullGCPtr<JS::Promise> decrypt(AlgorithmIdentifier const& algorithm, JS::NonnullGCPtr<CryptoKey> key, JS::Handle<WebIDL::BufferSource> const& data_parameter);
+    JS::ThrowCompletionOr<JS::NonnullGCPtr<JS::Promise>> sign(AlgorithmIdentifier const& algorithm, JS::NonnullGCPtr<CryptoKey> key, JS::Handle<WebIDL::BufferSource> const& data_parameter);
 
     JS::NonnullGCPtr<JS::Promise> digest(AlgorithmIdentifier const& algorithm, JS::Handle<WebIDL::BufferSource> const& data);
 
diff --git a/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.idl b/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.idl
index 9663a1e62e96..d7c457494f2a 100644
--- a/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.idl
+++ b/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.idl
@@ -47,7 +47,7 @@ dictionary JsonWebKey
 interface SubtleCrypto {
     Promise<any> encrypt(AlgorithmIdentifier algorithm, CryptoKey key, BufferSource data);
     Promise<any> decrypt(AlgorithmIdentifier algorithm, CryptoKey key, BufferSource data);
-    // FIXME: Promise<any> sign(AlgorithmIdentifier algorithm, CryptoKey key, BufferSource data);
+    Promise<any> sign(AlgorithmIdentifier algorithm, CryptoKey key, BufferSource data);
     // FIXME: Promise<any> verify(AlgorithmIdentifier algorithm, CryptoKey key, BufferSource signature, BufferSource data);
 
     Promise<any> digest(AlgorithmIdentifier algorithm, BufferSource data);"
f2a77f0c2ce86584d6e2ef7f579ce77e916916bc,2021-08-23 05:11:53,Maciej Zygmanowski,"base: Add ""Dark"" cursor theme",False,"Add ""Dark"" cursor theme",base,"diff --git a/Base/res/cursor-themes/Dark/Config.ini b/Base/res/cursor-themes/Dark/Config.ini
new file mode 100644
index 000000000000..fec44b14a7e7
--- /dev/null
+++ b/Base/res/cursor-themes/Dark/Config.ini
@@ -0,0 +1,17 @@
+[Cursor]
+Hidden=hidden.png
+Arrow=arrow.x2y2.png
+ResizeH=resize-horizontal.png
+ResizeV=resize-vertical.png
+ResizeDTLBR=resize-diagonal-tlbr.png
+ResizeDBLTR=resize-diagonal-bltr.png
+ResizeColumn=resize-column.png
+ResizeRow=resize-row.png
+IBeam=i-beam.png
+Disallowed=disallowed.png
+Move=move.png
+Hand=hand.x8y4.png
+Help=help.x1y1.png
+Drag=drag.png
+Wait=wait.f14t100.png
+Crosshair=crosshair.png
diff --git a/Base/res/cursor-themes/Dark/arrow.x2y2-2x.png b/Base/res/cursor-themes/Dark/arrow.x2y2-2x.png
new file mode 100644
index 000000000000..6a8d081302e6
Binary files /dev/null and b/Base/res/cursor-themes/Dark/arrow.x2y2-2x.png differ
diff --git a/Base/res/cursor-themes/Dark/arrow.x2y2.png b/Base/res/cursor-themes/Dark/arrow.x2y2.png
new file mode 100644
index 000000000000..30b5e80f684a
Binary files /dev/null and b/Base/res/cursor-themes/Dark/arrow.x2y2.png differ
diff --git a/Base/res/cursor-themes/Dark/crosshair-2x.png b/Base/res/cursor-themes/Dark/crosshair-2x.png
new file mode 100644
index 000000000000..83a0ccbdc091
Binary files /dev/null and b/Base/res/cursor-themes/Dark/crosshair-2x.png differ
diff --git a/Base/res/cursor-themes/Dark/crosshair.png b/Base/res/cursor-themes/Dark/crosshair.png
new file mode 100644
index 000000000000..ad8673d1f643
Binary files /dev/null and b/Base/res/cursor-themes/Dark/crosshair.png differ
diff --git a/Base/res/cursor-themes/Dark/disallowed.png b/Base/res/cursor-themes/Dark/disallowed.png
new file mode 100644
index 000000000000..c7357b9fbe3a
Binary files /dev/null and b/Base/res/cursor-themes/Dark/disallowed.png differ
diff --git a/Base/res/cursor-themes/Dark/drag.png b/Base/res/cursor-themes/Dark/drag.png
new file mode 100644
index 000000000000..dc311a971fd4
Binary files /dev/null and b/Base/res/cursor-themes/Dark/drag.png differ
diff --git a/Base/res/cursor-themes/Dark/hand.x8y4.png b/Base/res/cursor-themes/Dark/hand.x8y4.png
new file mode 100644
index 000000000000..5597473eb8d7
Binary files /dev/null and b/Base/res/cursor-themes/Dark/hand.x8y4.png differ
diff --git a/Base/res/cursor-themes/Dark/help.x1y1.png b/Base/res/cursor-themes/Dark/help.x1y1.png
new file mode 100644
index 000000000000..c26b3fe2faa3
Binary files /dev/null and b/Base/res/cursor-themes/Dark/help.x1y1.png differ
diff --git a/Base/res/cursor-themes/Dark/hidden.png b/Base/res/cursor-themes/Dark/hidden.png
new file mode 100644
index 000000000000..96382d8740a9
Binary files /dev/null and b/Base/res/cursor-themes/Dark/hidden.png differ
diff --git a/Base/res/cursor-themes/Dark/i-beam.png b/Base/res/cursor-themes/Dark/i-beam.png
new file mode 100644
index 000000000000..b7d92b22c16c
Binary files /dev/null and b/Base/res/cursor-themes/Dark/i-beam.png differ
diff --git a/Base/res/cursor-themes/Dark/move-2x.png b/Base/res/cursor-themes/Dark/move-2x.png
new file mode 100644
index 000000000000..167fbb83e7b2
Binary files /dev/null and b/Base/res/cursor-themes/Dark/move-2x.png differ
diff --git a/Base/res/cursor-themes/Dark/move.png b/Base/res/cursor-themes/Dark/move.png
new file mode 100644
index 000000000000..7cc7a64f9689
Binary files /dev/null and b/Base/res/cursor-themes/Dark/move.png differ
diff --git a/Base/res/cursor-themes/Dark/resize-column-2x.png b/Base/res/cursor-themes/Dark/resize-column-2x.png
new file mode 100644
index 000000000000..d498a513d27e
Binary files /dev/null and b/Base/res/cursor-themes/Dark/resize-column-2x.png differ
diff --git a/Base/res/cursor-themes/Dark/resize-column.png b/Base/res/cursor-themes/Dark/resize-column.png
new file mode 100644
index 000000000000..ab7897403dd8
Binary files /dev/null and b/Base/res/cursor-themes/Dark/resize-column.png differ
diff --git a/Base/res/cursor-themes/Dark/resize-diagonal-bltr-2x.png b/Base/res/cursor-themes/Dark/resize-diagonal-bltr-2x.png
new file mode 100644
index 000000000000..d020a4ffcd73
Binary files /dev/null and b/Base/res/cursor-themes/Dark/resize-diagonal-bltr-2x.png differ
diff --git a/Base/res/cursor-themes/Dark/resize-diagonal-bltr.png b/Base/res/cursor-themes/Dark/resize-diagonal-bltr.png
new file mode 100644
index 000000000000..0afe0ecb6b42
Binary files /dev/null and b/Base/res/cursor-themes/Dark/resize-diagonal-bltr.png differ
diff --git a/Base/res/cursor-themes/Dark/resize-diagonal-tlbr-2x.png b/Base/res/cursor-themes/Dark/resize-diagonal-tlbr-2x.png
new file mode 100644
index 000000000000..fd42d42e67eb
Binary files /dev/null and b/Base/res/cursor-themes/Dark/resize-diagonal-tlbr-2x.png differ
diff --git a/Base/res/cursor-themes/Dark/resize-diagonal-tlbr.png b/Base/res/cursor-themes/Dark/resize-diagonal-tlbr.png
new file mode 100644
index 000000000000..dc4b0b829444
Binary files /dev/null and b/Base/res/cursor-themes/Dark/resize-diagonal-tlbr.png differ
diff --git a/Base/res/cursor-themes/Dark/resize-horizontal-2x.png b/Base/res/cursor-themes/Dark/resize-horizontal-2x.png
new file mode 100644
index 000000000000..5db9e9d7a96e
Binary files /dev/null and b/Base/res/cursor-themes/Dark/resize-horizontal-2x.png differ
diff --git a/Base/res/cursor-themes/Dark/resize-horizontal.png b/Base/res/cursor-themes/Dark/resize-horizontal.png
new file mode 100644
index 000000000000..80b98691bb73
Binary files /dev/null and b/Base/res/cursor-themes/Dark/resize-horizontal.png differ
diff --git a/Base/res/cursor-themes/Dark/resize-row-2x.png b/Base/res/cursor-themes/Dark/resize-row-2x.png
new file mode 100644
index 000000000000..1b62829d7c0b
Binary files /dev/null and b/Base/res/cursor-themes/Dark/resize-row-2x.png differ
diff --git a/Base/res/cursor-themes/Dark/resize-row.png b/Base/res/cursor-themes/Dark/resize-row.png
new file mode 100644
index 000000000000..7f1c226c7736
Binary files /dev/null and b/Base/res/cursor-themes/Dark/resize-row.png differ
diff --git a/Base/res/cursor-themes/Dark/resize-vertical-2x.png b/Base/res/cursor-themes/Dark/resize-vertical-2x.png
new file mode 100644
index 000000000000..3be1baea3034
Binary files /dev/null and b/Base/res/cursor-themes/Dark/resize-vertical-2x.png differ
diff --git a/Base/res/cursor-themes/Dark/resize-vertical.png b/Base/res/cursor-themes/Dark/resize-vertical.png
new file mode 100644
index 000000000000..1d3e1d2f3cee
Binary files /dev/null and b/Base/res/cursor-themes/Dark/resize-vertical.png differ
diff --git a/Base/res/cursor-themes/Dark/wait.f14t100.png b/Base/res/cursor-themes/Dark/wait.f14t100.png
new file mode 100644
index 000000000000..d48441de9811
Binary files /dev/null and b/Base/res/cursor-themes/Dark/wait.f14t100.png differ"
d60635cb9df9b4e72702db02b88b26ab9123c2a8,2021-08-23 03:32:09,Andreas Kling,kernel: Convert Processor::in_irq() to static current_in_irq(),False,Convert Processor::in_irq() to static current_in_irq(),kernel,"diff --git a/Kernel/Arch/x86/Processor.h b/Kernel/Arch/x86/Processor.h
index 42ebcc82b89a..6377f0ddaf2d 100644
--- a/Kernel/Arch/x86/Processor.h
+++ b/Kernel/Arch/x86/Processor.h
@@ -120,7 +120,7 @@ class Processor {
     u32 m_gdt_length;
 
     u32 m_cpu;
-    u32 m_in_irq;
+    FlatPtr m_in_irq {};
     volatile u32 m_in_critical {};
     static Atomic<u32> s_idle_cpu_mask;
 
@@ -329,9 +329,9 @@ class Processor {
         return Processor::id() == 0;
     }
 
-    ALWAYS_INLINE u32& in_irq()
+    ALWAYS_INLINE static FlatPtr current_in_irq()
     {
-        return m_in_irq;
+        return read_gs_ptr(__builtin_offsetof(Processor, m_in_irq));
     }
 
     ALWAYS_INLINE static void restore_in_critical(u32 critical)
diff --git a/Kernel/Arch/x86/common/Interrupts.cpp b/Kernel/Arch/x86/common/Interrupts.cpp
index 5f26402bfe82..0177559b801d 100644
--- a/Kernel/Arch/x86/common/Interrupts.cpp
+++ b/Kernel/Arch/x86/common/Interrupts.cpp
@@ -288,7 +288,7 @@ void page_fault_handler(TrapFrame* trap)
 
     bool faulted_in_kernel = !(regs.cs & 3);
 
-    if (faulted_in_kernel && Processor::current().in_irq()) {
+    if (faulted_in_kernel && Processor::current_in_irq()) {
         // If we're faulting in an IRQ handler, first check if we failed
         // due to safe_memcpy, safe_strnlen, or safe_memset. If we did,
         // gracefully continue immediately. Because we're in an IRQ handler
diff --git a/Kernel/Arch/x86/i386/Processor.cpp b/Kernel/Arch/x86/i386/Processor.cpp
index e57861b9f525..e29bec615990 100644
--- a/Kernel/Arch/x86/i386/Processor.cpp
+++ b/Kernel/Arch/x86/i386/Processor.cpp
@@ -180,7 +180,7 @@ FlatPtr Processor::init_context(Thread& thread, bool leave_crit)
 
 void Processor::switch_context(Thread*& from_thread, Thread*& to_thread)
 {
-    VERIFY(!in_irq());
+    VERIFY(!m_in_irq);
     VERIFY(m_in_critical == 1);
     VERIFY(is_kernel_mode());
 
diff --git a/Kernel/Arch/x86/x86_64/Processor.cpp b/Kernel/Arch/x86/x86_64/Processor.cpp
index 2996957aa8fd..6ab4d907c027 100644
--- a/Kernel/Arch/x86/x86_64/Processor.cpp
+++ b/Kernel/Arch/x86/x86_64/Processor.cpp
@@ -164,7 +164,7 @@ FlatPtr Processor::init_context(Thread& thread, bool leave_crit)
 
 void Processor::switch_context(Thread*& from_thread, Thread*& to_thread)
 {
-    VERIFY(!in_irq());
+    VERIFY(!m_in_irq);
     VERIFY(m_in_critical == 1);
     VERIFY(is_kernel_mode());
 
diff --git a/Kernel/Devices/AsyncDeviceRequest.cpp b/Kernel/Devices/AsyncDeviceRequest.cpp
index 84524be30c7c..89f699d04d7d 100644
--- a/Kernel/Devices/AsyncDeviceRequest.cpp
+++ b/Kernel/Devices/AsyncDeviceRequest.cpp
@@ -135,7 +135,7 @@ void AsyncDeviceRequest::complete(RequestResult result)
         VERIFY(m_result == Started);
         m_result = result;
     }
-    if (Processor::current().in_irq()) {
+    if (Processor::current_in_irq()) {
         ref(); // Make sure we don't get freed
         Processor::deferred_call_queue([this]() {
             request_finished();
diff --git a/Kernel/Devices/HID/I8042Controller.cpp b/Kernel/Devices/HID/I8042Controller.cpp
index 3f11b7056098..a55326ef923c 100644
--- a/Kernel/Devices/HID/I8042Controller.cpp
+++ b/Kernel/Devices/HID/I8042Controller.cpp
@@ -132,7 +132,7 @@ UNMAP_AFTER_INIT void I8042Controller::detect_devices()
 
 bool I8042Controller::irq_process_input_buffer(HIDDevice::Type)
 {
-    VERIFY(Processor::current().in_irq());
+    VERIFY(Processor::current_in_irq());
 
     u8 status = IO::in8(I8042_STATUS);
     if (!(status & I8042_BUFFER_FULL))
@@ -167,7 +167,7 @@ bool I8042Controller::do_reset_device(HIDDevice::Type device)
     VERIFY(device != HIDDevice::Type::Unknown);
     VERIFY(m_lock.is_locked());
 
-    VERIFY(!Processor::current().in_irq());
+    VERIFY(!Processor::current_in_irq());
     if (do_send_command(device, 0xff) != I8042_ACK)
         return false;
     // Wait until we get the self-test result
@@ -179,7 +179,7 @@ u8 I8042Controller::do_send_command(HIDDevice::Type device, u8 command)
     VERIFY(device != HIDDevice::Type::Unknown);
     VERIFY(m_lock.is_locked());
 
-    VERIFY(!Processor::current().in_irq());
+    VERIFY(!Processor::current_in_irq());
 
     return do_write_to_device(device, command);
 }
@@ -189,7 +189,7 @@ u8 I8042Controller::do_send_command(HIDDevice::Type device, u8 command, u8 data)
     VERIFY(device != HIDDevice::Type::Unknown);
     VERIFY(m_lock.is_locked());
 
-    VERIFY(!Processor::current().in_irq());
+    VERIFY(!Processor::current_in_irq());
 
     u8 response = do_write_to_device(device, command);
     if (response == I8042_ACK)
@@ -202,7 +202,7 @@ u8 I8042Controller::do_write_to_device(HIDDevice::Type device, u8 data)
     VERIFY(device != HIDDevice::Type::Unknown);
     VERIFY(m_lock.is_locked());
 
-    VERIFY(!Processor::current().in_irq());
+    VERIFY(!Processor::current_in_irq());
 
     int attempts = 0;
     u8 response;
diff --git a/Kernel/FileSystem/File.h b/Kernel/FileSystem/File.h
index cfc9bd313461..99574450291a 100644
--- a/Kernel/FileSystem/File.h
+++ b/Kernel/FileSystem/File.h
@@ -121,7 +121,7 @@ class File
 
     void evaluate_block_conditions()
     {
-        if (Processor::current().in_irq()) {
+        if (Processor::current_in_irq()) {
             // If called from an IRQ handler we need to delay evaluation
             // and unblocking of waiting threads. Note that this File
             // instance may be deleted until the deferred call is executed!
@@ -137,7 +137,7 @@ class File
 private:
     ALWAYS_INLINE void do_evaluate_block_conditions()
     {
-        VERIFY(!Processor::current().in_irq());
+        VERIFY(!Processor::current_in_irq());
         block_condition().unblock();
     }
 
diff --git a/Kernel/Locking/Mutex.cpp b/Kernel/Locking/Mutex.cpp
index b7271fbf07b5..829001958bac 100644
--- a/Kernel/Locking/Mutex.cpp
+++ b/Kernel/Locking/Mutex.cpp
@@ -17,7 +17,7 @@ void Mutex::lock(Mode mode, [[maybe_unused]] LockLocation const& location)
 {
     // NOTE: This may be called from an interrupt handler (not an IRQ handler)
     // and also from within critical sections!
-    VERIFY(!Processor::current().in_irq());
+    VERIFY(!Processor::current_in_irq());
     VERIFY(mode != Mode::Unlocked);
     auto current_thread = Thread::current();
 
@@ -143,7 +143,7 @@ void Mutex::unlock()
 {
     // NOTE: This may be called from an interrupt handler (not an IRQ handler)
     // and also from within critical sections!
-    VERIFY(!Processor::current().in_irq());
+    VERIFY(!Processor::current_in_irq());
     auto current_thread = Thread::current();
     SpinlockLocker lock(m_lock);
     Mode current_mode = m_mode;
@@ -253,7 +253,7 @@ auto Mutex::force_unlock_if_locked(u32& lock_count_to_restore) -> Mode
 {
     // NOTE: This may be called from an interrupt handler (not an IRQ handler)
     // and also from within critical sections!
-    VERIFY(!Processor::current().in_irq());
+    VERIFY(!Processor::current_in_irq());
     auto current_thread = Thread::current();
     SpinlockLocker lock(m_lock);
     auto current_mode = m_mode;
@@ -316,7 +316,7 @@ void Mutex::restore_lock(Mode mode, u32 lock_count, [[maybe_unused]] LockLocatio
 {
     VERIFY(mode != Mode::Unlocked);
     VERIFY(lock_count > 0);
-    VERIFY(!Processor::current().in_irq());
+    VERIFY(!Processor::current_in_irq());
     auto current_thread = Thread::current();
     bool did_block = false;
     SpinlockLocker lock(m_lock);
diff --git a/Kernel/Memory/MemoryManager.cpp b/Kernel/Memory/MemoryManager.cpp
index 469ab4d01f82..fd83dc49d330 100644
--- a/Kernel/Memory/MemoryManager.cpp
+++ b/Kernel/Memory/MemoryManager.cpp
@@ -685,9 +685,9 @@ Region* MemoryManager::find_region_from_vaddr(VirtualAddress vaddr)
 PageFaultResponse MemoryManager::handle_page_fault(PageFault const& fault)
 {
     VERIFY_INTERRUPTS_DISABLED();
-    if (Processor::current().in_irq()) {
+    if (Processor::current_in_irq()) {
         dbgln(""CPU[{}] BUG! Page fault while handling IRQ! code={}, vaddr={}, irq level: {}"",
-            Processor::id(), fault.code(), fault.vaddr(), Processor::current().in_irq());
+            Processor::id(), fault.code(), fault.vaddr(), Processor::current_in_irq());
         dump_kernel_regions();
         return PageFaultResponse::ShouldCrash;
     }
diff --git a/Kernel/SanCov.cpp b/Kernel/SanCov.cpp
index 90d2fb026242..8e8040a70697 100644
--- a/Kernel/SanCov.cpp
+++ b/Kernel/SanCov.cpp
@@ -17,7 +17,7 @@ void __sanitizer_cov_trace_pc(void)
     if (g_in_early_boot) [[unlikely]]
         return;
 
-    if (Processor::current().in_irq()) [[unlikely]] {
+    if (Processor::current_in_irq()) [[unlikely]] {
         // Do not trace in interrupts.
         return;
     }
diff --git a/Kernel/Scheduler.cpp b/Kernel/Scheduler.cpp
index 8f19be9dad37..528eac4a23aa 100644
--- a/Kernel/Scheduler.cpp
+++ b/Kernel/Scheduler.cpp
@@ -252,16 +252,15 @@ bool Scheduler::pick_next()
 bool Scheduler::yield()
 {
     InterruptDisabler disabler;
-    auto& proc = Processor::current();
 
     auto current_thread = Thread::current();
-    dbgln_if(SCHEDULER_DEBUG, ""Scheduler[{}]: yielding thread {} in_irq={}"", proc.get_id(), *current_thread, proc.in_irq());
+    dbgln_if(SCHEDULER_DEBUG, ""Scheduler[{}]: yielding thread {} in_irq={}"", Processor::id(), *current_thread, Processor::current_in_irq());
     VERIFY(current_thread != nullptr);
-    if (proc.in_irq() || Processor::in_critical()) {
+    if (Processor::current_in_irq() || Processor::in_critical()) {
         // If we're handling an IRQ we can't switch context, or we're in
         // a critical section where we don't want to switch contexts, then
         // delay until exiting the trap or critical section
-        proc.invoke_scheduler_async();
+        Processor::current().invoke_scheduler_async();
         return false;
     }
 
@@ -269,7 +268,7 @@ bool Scheduler::yield()
         return false;
 
     if constexpr (SCHEDULER_DEBUG)
-        dbgln(""Scheduler[{}]: yield returns to thread {} in_irq={}"", Processor::id(), *current_thread, Processor::current().in_irq());
+        dbgln(""Scheduler[{}]: yield returns to thread {} in_irq={}"", Processor::id(), *current_thread, Processor::current_in_irq());
     return true;
 }
 
@@ -462,7 +461,7 @@ void Scheduler::add_time_scheduled(u64 time_to_add, bool is_kernel)
 void Scheduler::timer_tick(const RegisterState& regs)
 {
     VERIFY_INTERRUPTS_DISABLED();
-    VERIFY(Processor::current().in_irq());
+    VERIFY(Processor::current_in_irq());
 
     auto current_thread = Processor::current_thread();
     if (!current_thread)
@@ -506,15 +505,14 @@ void Scheduler::timer_tick(const RegisterState& regs)
     }
 
     VERIFY_INTERRUPTS_DISABLED();
-    VERIFY(Processor::current().in_irq());
+    VERIFY(Processor::current_in_irq());
     Processor::current().invoke_scheduler_async();
 }
 
 void Scheduler::invoke_async()
 {
     VERIFY_INTERRUPTS_DISABLED();
-    auto& processor = Processor::current();
-    VERIFY(!processor.in_irq());
+    VERIFY(!Processor::current_in_irq());
 
     // Since this function is called when leaving critical sections (such
     // as a Spinlock), we need to check if we're not already doing this
diff --git a/Kernel/Thread.cpp b/Kernel/Thread.cpp
index 3c5d4ec18abf..9b7a00d8ecc9 100644
--- a/Kernel/Thread.cpp
+++ b/Kernel/Thread.cpp
@@ -157,7 +157,7 @@ Thread::~Thread()
 
 void Thread::block(Kernel::Mutex& lock, SpinlockLocker<Spinlock<u8>>& lock_lock, u32 lock_count)
 {
-    VERIFY(!Processor::current().in_irq());
+    VERIFY(!Processor::current_in_irq());
     VERIFY(this == Thread::current());
     ScopedCritical critical;
     VERIFY(!Memory::s_mm_lock.own_lock());
@@ -238,7 +238,7 @@ u32 Thread::unblock_from_lock(Kernel::Mutex& lock)
         SpinlockLocker scheduler_lock(g_scheduler_lock);
         SpinlockLocker block_lock(m_block_lock);
         VERIFY(m_blocking_lock == &lock);
-        VERIFY(!Processor::current().in_irq());
+        VERIFY(!Processor::current_in_irq());
         VERIFY(g_scheduler_lock.own_lock());
         VERIFY(m_block_lock.own_lock());
         VERIFY(m_blocking_lock == &lock);
@@ -251,7 +251,7 @@ u32 Thread::unblock_from_lock(Kernel::Mutex& lock)
         VERIFY(m_state != Thread::Runnable && m_state != Thread::Running);
         set_state(Thread::Runnable);
     };
-    if (Processor::current().in_irq()) {
+    if (Processor::current_in_irq()) {
         Processor::deferred_call_queue([do_unblock = move(do_unblock), self = make_weak_ptr()]() {
             if (auto this_thread = self.strong_ref())
                 do_unblock();
@@ -272,7 +272,7 @@ void Thread::unblock_from_blocker(Blocker& blocker)
         if (!should_be_stopped() && !is_stopped())
             unblock();
     };
-    if (Processor::current().in_irq()) {
+    if (Processor::current_in_irq()) {
         Processor::deferred_call_queue([do_unblock = move(do_unblock), self = make_weak_ptr()]() {
             if (auto this_thread = self.strong_ref())
                 do_unblock();
@@ -284,7 +284,7 @@ void Thread::unblock_from_blocker(Blocker& blocker)
 
 void Thread::unblock(u8 signal)
 {
-    VERIFY(!Processor::current().in_irq());
+    VERIFY(!Processor::current_in_irq());
     VERIFY(g_scheduler_lock.own_lock());
     VERIFY(m_block_lock.own_lock());
     if (m_state != Thread::Blocked)
@@ -377,7 +377,7 @@ void Thread::die_if_needed()
     // Now leave the critical section so that we can also trigger the
     // actual context switch
     Processor::clear_critical();
-    dbgln(""die_if_needed returned from clear_critical!!! in irq: {}"", Processor::current().in_irq());
+    dbgln(""die_if_needed returned from clear_critical!!! in irq: {}"", Processor::current_in_irq());
     // We should never get here, but the scoped scheduler lock
     // will be released by Scheduler::context_switch again
     VERIFY_NOT_REACHED();
diff --git a/Kernel/Thread.h b/Kernel/Thread.h
index c4ee8a04ed28..608483ae1db5 100644
--- a/Kernel/Thread.h
+++ b/Kernel/Thread.h
@@ -847,7 +847,7 @@ class Thread
     template<typename BlockerType, class... Args>
     [[nodiscard]] BlockResult block(const BlockTimeout& timeout, Args&&... args)
     {
-        VERIFY(!Processor::current().in_irq());
+        VERIFY(!Processor::current_in_irq());
         VERIFY(this == Thread::current());
         ScopedCritical critical;
         VERIFY(!Memory::s_mm_lock.own_lock());
@@ -889,7 +889,7 @@ class Thread
                 // Process::kill_all_threads may be called at any time, which will mark all
                 // threads to die. In that case
                 timer_was_added = TimerQueue::the().add_timer_without_id(*m_block_timer, block_timeout.clock_id(), block_timeout.absolute_time(), [&]() {
-                    VERIFY(!Processor::current().in_irq());
+                    VERIFY(!Processor::current_in_irq());
                     VERIFY(!g_scheduler_lock.own_lock());
                     VERIFY(!m_block_lock.own_lock());
                     // NOTE: this may execute on the same or any other processor!
diff --git a/Kernel/Time/TimeManagement.cpp b/Kernel/Time/TimeManagement.cpp
index 6d9f6c6bf106..5cc391a41305 100644
--- a/Kernel/Time/TimeManagement.cpp
+++ b/Kernel/Time/TimeManagement.cpp
@@ -403,7 +403,7 @@ void TimeManagement::increment_time_since_boot()
 
 void TimeManagement::system_timer_tick(const RegisterState& regs)
 {
-    if (Processor::current().in_irq() <= 1) {
+    if (Processor::current_in_irq() <= 1) {
         // Don't expire timers while handling IRQs
         TimerQueue::the().fire();
     }"
55b19c31772213f21f1ab3e76ffca71468ab0f70,2024-11-12 03:26:46,sideshowbarker,libweb: Remove unused append_with_space etc functions from DOM::Node,False,Remove unused append_with_space etc functions from DOM::Node,libweb,"diff --git a/Libraries/LibWeb/DOM/Node.cpp b/Libraries/LibWeb/DOM/Node.cpp
index 88db05910f86..02528ac3d75c 100644
--- a/Libraries/LibWeb/DOM/Node.cpp
+++ b/Libraries/LibWeb/DOM/Node.cpp
@@ -2472,62 +2472,6 @@ Optional<StringView> Node::first_valid_id(StringView value, Document const& docu
     return {};
 }
 
-// https://www.w3.org/TR/accname-1.2/#mapping_additional_nd_te
-ErrorOr<void> Node::append_without_space(StringBuilder x, StringView const& result)
-{
-    // - If X is empty, copy the result to X.
-    // - If X is non-empty, copy the result to the end of X.
-    TRY(x.try_append(result));
-    return {};
-}
-
-// https://www.w3.org/TR/accname-1.2/#mapping_additional_nd_te
-ErrorOr<void> Node::append_with_space(StringBuilder x, StringView const& result)
-{
-    // - If X is empty, copy the result to X.
-    if (x.is_empty()) {
-        TRY(x.try_append(result));
-    } else {
-        // - If X is non-empty, add a space to the end of X and then copy the result to X after the space.
-        TRY(x.try_append("" ""sv));
-        TRY(x.try_append(result));
-    }
-    return {};
-}
-
-// https://www.w3.org/TR/accname-1.2/#mapping_additional_nd_te
-ErrorOr<void> Node::prepend_without_space(StringBuilder x, StringView const& result)
-{
-    // - If X is empty, copy the result to X.
-    if (x.is_empty()) {
-        x.append(result);
-    } else {
-        // - If X is non-empty, copy the result to the start of X.
-        auto temp = TRY(x.to_string());
-        x.clear();
-        TRY(x.try_append(result));
-        TRY(x.try_append(temp));
-    }
-    return {};
-}
-
-// https://www.w3.org/TR/accname-1.2/#mapping_additional_nd_te
-ErrorOr<void> Node::prepend_with_space(StringBuilder x, StringView const& result)
-{
-    // - If X is empty, copy the result to X.
-    if (x.is_empty()) {
-        TRY(x.try_append(result));
-    } else {
-        // - If X is non-empty, copy the result to the start of X, and add a space after the copy.
-        auto temp = TRY(x.to_string());
-        x.clear();
-        TRY(x.try_append(result));
-        TRY(x.try_append("" ""sv));
-        TRY(x.try_append(temp));
-    }
-    return {};
-}
-
 void Node::add_registered_observer(RegisteredObserver& registered_observer)
 {
     if (!m_registered_observer_list)
diff --git a/Libraries/LibWeb/DOM/Node.h b/Libraries/LibWeb/DOM/Node.h
index da2dc15cb404..7859b9d6d494 100644
--- a/Libraries/LibWeb/DOM/Node.h
+++ b/Libraries/LibWeb/DOM/Node.h
@@ -795,10 +795,6 @@ class Node : public EventTarget {
     void remove_child_impl(JS::NonnullGCPtr<Node>);
 
     static Optional<StringView> first_valid_id(StringView, Document const&);
-    static ErrorOr<void> append_without_space(StringBuilder, StringView const&);
-    static ErrorOr<void> append_with_space(StringBuilder, StringView const&);
-    static ErrorOr<void> prepend_without_space(StringBuilder, StringView const&);
-    static ErrorOr<void> prepend_with_space(StringBuilder, StringView const&);
 
     JS::GCPtr<Node> m_parent;
     JS::GCPtr<Node> m_first_child;"
42bdcf182822befd96f8f9fad366f43333b9c05c,2020-09-21 23:46:03,Itamar,hackstudio: Basic C++ autocomplete logic,False,Basic C++ autocomplete logic,hackstudio,"diff --git a/DevTools/HackStudio/CMakeLists.txt b/DevTools/HackStudio/CMakeLists.txt
index 7b2b28b1f227..684de9fdf55f 100644
--- a/DevTools/HackStudio/CMakeLists.txt
+++ b/DevTools/HackStudio/CMakeLists.txt
@@ -1,5 +1,6 @@
 set(SOURCES
     CodeDocument.cpp
+    CppAutoComplete.cpp
     CursorTool.cpp
     Debugger/BacktraceModel.cpp
     Debugger/DebugInfoWidget.cpp
diff --git a/DevTools/HackStudio/CppAutoComplete.cpp b/DevTools/HackStudio/CppAutoComplete.cpp
new file mode 100644
index 000000000000..1a7762cee2e0
--- /dev/null
+++ b/DevTools/HackStudio/CppAutoComplete.cpp
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include ""CppAutoComplete.h""
+#include <AK/HashTable.h>
+#include <LibGUI/CppLexer.h>
+
+// #define DEBUG_AUTOCOMPLETE
+
+namespace HackStudio {
+Vector<String> CppAutoComplete::get_suggestions(const String& code, GUI::TextPosition autocomplete_position)
+{
+    auto lines = code.split('\n', true);
+    GUI::CppLexer lexer(code);
+    auto tokens = lexer.lex();
+
+    auto index_of_target_token = token_in_position(tokens, autocomplete_position);
+    if (!index_of_target_token.has_value())
+        return {};
+
+    auto suggestions = identifier_prefixes(lines, tokens, index_of_target_token.value());
+
+#ifdef DEBUG_AUTOCOMPLETE
+    for (auto& suggestion : suggestions) {
+        dbg() << ""suggestion: "" << suggestion;
+    }
+#endif
+
+    return suggestions;
+}
+
+String CppAutoComplete::text_of_token(const Vector<String> lines, const GUI::CppToken& token)
+{
+    return lines[token.m_start.line].substring(token.m_start.column, token.m_end.column - token.m_start.column + 1);
+}
+
+Optional<size_t> CppAutoComplete::token_in_position(const Vector<GUI::CppToken>& tokens, GUI::TextPosition position)
+{
+    for (size_t token_index = 0; token_index < tokens.size(); ++token_index) {
+        auto& token = tokens[token_index];
+        if (token.m_start.line != position.line())
+            continue;
+        if (token.m_start.column > position.column() || token.m_end.column < position.column())
+            continue;
+        return token_index;
+    }
+    return {};
+}
+
+Vector<String> CppAutoComplete::identifier_prefixes(const Vector<String> lines, const Vector<GUI::CppToken>& tokens, size_t target_token_index)
+{
+    auto partial_input = text_of_token(lines, tokens[target_token_index]);
+    Vector<String> suggestions;
+
+    HashTable<String> suggestions_lookup; // To avoid duplicate results
+
+    for (size_t i = 0; i < target_token_index; ++i) {
+        auto& token = tokens[i];
+        if (token.m_type != GUI::CppToken::Type::Identifier)
+            continue;
+        auto text = text_of_token(lines, token);
+        if (text.starts_with(partial_input) && !suggestions_lookup.contains(text)) {
+            suggestions_lookup.set(text);
+            suggestions.append(text);
+        }
+    }
+    return suggestions;
+}
+};
diff --git a/DevTools/HackStudio/CppAutoComplete.h b/DevTools/HackStudio/CppAutoComplete.h
new file mode 100644
index 000000000000..9c4bbb3233ad
--- /dev/null
+++ b/DevTools/HackStudio/CppAutoComplete.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2020, Itamar S. <itamar8910@gmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <AK/String.h>
+#include <AK/Vector.h>
+#include <LibGUI/CppLexer.h>
+#include <LibGUI/TextPosition.h>
+
+namespace HackStudio {
+class CppAutoComplete {
+public:
+    CppAutoComplete() = delete;
+
+    static Vector<String> get_suggestions(const String& code, GUI::TextPosition autocomplete_position);
+
+private:
+    static Optional<size_t> token_in_position(const Vector<GUI::CppToken>&, GUI::TextPosition);
+    static String text_of_token(const Vector<String> lines, const GUI::CppToken&);
+    static Vector<String> identifier_prefixes(const Vector<String> lines, const Vector<GUI::CppToken>&, size_t target_token_index);
+};
+};"
627eb90086c70b150ab5a4acbd2d906657962cca,2024-11-03 22:21:58,Timothy Flynn,libweb: Update WebDriver's list of collection types,False,Update WebDriver's list of collection types,libweb,"diff --git a/Userland/Libraries/LibWeb/WebDriver/ExecuteScript.cpp b/Userland/Libraries/LibWeb/WebDriver/ExecuteScript.cpp
index c9d7726d818f..c88cf279414a 100644
--- a/Userland/Libraries/LibWeb/WebDriver/ExecuteScript.cpp
+++ b/Userland/Libraries/LibWeb/WebDriver/ExecuteScript.cpp
@@ -19,11 +19,14 @@
 #include <LibJS/Runtime/ObjectEnvironment.h>
 #include <LibJS/Runtime/Promise.h>
 #include <LibJS/Runtime/PromiseConstructor.h>
+#include <LibWeb/DOM/DOMTokenList.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/DOM/HTMLCollection.h>
 #include <LibWeb/DOM/NodeList.h>
 #include <LibWeb/FileAPI/FileList.h>
 #include <LibWeb/HTML/BrowsingContext.h>
+#include <LibWeb/HTML/HTMLAllCollection.h>
+#include <LibWeb/HTML/HTMLFormControlsCollection.h>
 #include <LibWeb/HTML/HTMLOptionsCollection.h>
 #include <LibWeb/HTML/Scripting/Environments.h>
 #include <LibWeb/HTML/Scripting/TemporaryExecutionContext.h>
@@ -60,14 +63,16 @@ static bool is_collection(JS::Object const& value)
         value.has_parameter_map()
         // - instance of Array
         || is<JS::Array>(value)
+        // - instance of DOMTokenList
+        || is<DOM::DOMTokenList>(value)
         // - instance of FileList
         || is<FileAPI::FileList>(value)
         // - instance of HTMLAllCollection
-        || false // FIXME
+        || is<HTML::HTMLAllCollection>(value)
         // - instance of HTMLCollection
         || is<DOM::HTMLCollection>(value)
         // - instance of HTMLFormControlsCollection
-        || false // FIXME
+        || is<HTML::HTMLFormControlsCollection>(value)
         // - instance of HTMLOptionsCollection
         || is<HTML::HTMLOptionsCollection>(value)
         // - instance of NodeList"
63c6eae918a3dacdfd3d6946bf0fdc8bd812e899,2024-01-14 00:11:09,Bastiaan van der Plaat,libwebview: Fix sanitizing about scheme URLs,False,Fix sanitizing about scheme URLs,libwebview,"diff --git a/Tests/LibWebView/TestWebViewURL.cpp b/Tests/LibWebView/TestWebViewURL.cpp
index 6267c66c16bd..9a3816745c0d 100644
--- a/Tests/LibWebView/TestWebViewURL.cpp
+++ b/Tests/LibWebView/TestWebViewURL.cpp
@@ -79,3 +79,20 @@ TEST_CASE(http_url)
     compare_url_parts(""http://abc.def.com#anchor""sv, { ""http://abc.""sv, ""def.com""sv, ""#anchor""sv });
     compare_url_parts(""http://abc.def.com?query""sv, { ""http://abc.""sv, ""def.com""sv, ""?query""sv });
 }
+
+TEST_CASE(about_url)
+{
+    auto is_sanitized_url_the_same = [](StringView url) {
+        auto sanitized_url = WebView::sanitize_url(url);
+        if (!sanitized_url.has_value())
+            return false;
+        return sanitized_url->to_string().value() == url;
+    };
+
+    EXPECT(!is_sanitized_url_the_same(""about""sv));
+    EXPECT(!is_sanitized_url_the_same(""about blabla:""sv));
+    EXPECT(!is_sanitized_url_the_same(""blabla about:""sv));
+
+    EXPECT(is_sanitized_url_the_same(""about:about""sv));
+    EXPECT(is_sanitized_url_the_same(""about:version""sv));
+}
diff --git a/Userland/Libraries/LibWebView/URL.cpp b/Userland/Libraries/LibWebView/URL.cpp
index 17451ba98bf9..8898d2321636 100644
--- a/Userland/Libraries/LibWebView/URL.cpp
+++ b/Userland/Libraries/LibWebView/URL.cpp
@@ -35,7 +35,7 @@ static Optional<URL> create_url_with_url_or_path(String const& url_or_path)
 static Optional<URL> query_public_suffix_list(StringView url_string)
 {
     auto out = MUST(String::from_utf8(url_string));
-    if (!out.contains(""://""sv))
+    if (!out.starts_with_bytes(""about:""sv) && !out.contains(""://""sv))
         out = MUST(String::formatted(""https://{}""sv, out));
 
     auto maybe_url = create_url_with_url_or_path(out);"
59b1dfa4e5078d1e86ec9173515f718a847f82ff,2022-11-05 13:59:28,Timothy Flynn,"browser: Rename ""take screenshot"" action to ""take visible screenshot""",False,"Rename ""take screenshot"" action to ""take visible screenshot""",browser,"diff --git a/Userland/Applications/Browser/BrowserWindow.cpp b/Userland/Applications/Browser/BrowserWindow.cpp
index 0a0f056ef92d..729d61dbfc11 100644
--- a/Userland/Applications/Browser/BrowserWindow.cpp
+++ b/Userland/Applications/Browser/BrowserWindow.cpp
@@ -244,13 +244,13 @@ void BrowserWindow::build_menus()
         this);
     m_inspect_dom_node_action->set_status_tip(""Open inspector for this element"");
 
-    m_take_screenshot_action = GUI::Action::create(
-        ""&Take Screenshot""sv, g_icon_bag.filetype_image, [this](auto&) {
+    m_take_visible_screenshot_action = GUI::Action::create(
+        ""Take &Visible Screenshot""sv, g_icon_bag.filetype_image, [this](auto&) {
             if (auto result = take_screenshot(); result.is_error())
                 GUI::MessageBox::show_error(this, String::formatted(""{}"", result.error()));
         },
         this);
-    m_take_screenshot_action->set_status_tip(""Save a screenshot of the current tab to the Downloads directory""sv);
+    m_take_visible_screenshot_action->set_status_tip(""Save a screenshot of the visible portion of the current tab to the Downloads directory""sv);
 
     auto& inspect_menu = add_menu(""&Inspect"");
     inspect_menu.add_action(*m_view_source_action);
diff --git a/Userland/Applications/Browser/BrowserWindow.h b/Userland/Applications/Browser/BrowserWindow.h
index 89f193a68b73..94ee02cafce3 100644
--- a/Userland/Applications/Browser/BrowserWindow.h
+++ b/Userland/Applications/Browser/BrowserWindow.h
@@ -39,7 +39,7 @@ class BrowserWindow final : public GUI::Window
     GUI::Action& view_source_action() { return *m_view_source_action; }
     GUI::Action& inspect_dom_tree_action() { return *m_inspect_dom_tree_action; }
     GUI::Action& inspect_dom_node_action() { return *m_inspect_dom_node_action; }
-    GUI::Action& take_screenshot_action() { return *m_take_screenshot_action; }
+    GUI::Action& take_visible_screenshot_action() { return *m_take_visible_screenshot_action; }
 
     void content_filters_changed();
     void proxy_mappings_changed();
@@ -70,7 +70,7 @@ class BrowserWindow final : public GUI::Window
     RefPtr<GUI::Action> m_view_source_action;
     RefPtr<GUI::Action> m_inspect_dom_tree_action;
     RefPtr<GUI::Action> m_inspect_dom_node_action;
-    RefPtr<GUI::Action> m_take_screenshot_action;
+    RefPtr<GUI::Action> m_take_visible_screenshot_action;
 
     CookieJar& m_cookie_jar;
     WindowActions m_window_actions;
diff --git a/Userland/Applications/Browser/Tab.cpp b/Userland/Applications/Browser/Tab.cpp
index e910a3621a49..4af1f6326912 100644
--- a/Userland/Applications/Browser/Tab.cpp
+++ b/Userland/Applications/Browser/Tab.cpp
@@ -405,7 +405,7 @@ Tab::Tab(BrowserWindow& window)
     m_page_context_menu->add_action(window.inspect_dom_tree_action());
     m_page_context_menu->add_action(window.inspect_dom_node_action());
     m_page_context_menu->add_separator();
-    m_page_context_menu->add_action(window.take_screenshot_action());
+    m_page_context_menu->add_action(window.take_visible_screenshot_action());
     view().on_context_menu_request = [&](auto& screen_position) {
         m_page_context_menu->popup(screen_position);
     };"
a0bde822ee3f7219fb3ff61e456335515189669a,2019-06-07 20:44:16,Andreas Kling,ak: Add IterationDecision.h.,False,Add IterationDecision.h.,ak,"diff --git a/AK/IterationDecision.h b/AK/IterationDecision.h
new file mode 100644
index 000000000000..26620ee43856
--- /dev/null
+++ b/AK/IterationDecision.h
@@ -0,0 +1,12 @@
+#pragma once
+
+namespace AK {
+
+enum class IterationDecision {
+    Continue,
+    Break,
+};
+
+}
+
+using AK::IterationDecision;"
a24df37713508614cf66d7e83e4fb4f33feb0a68,2021-12-31 04:33:20,davidot,libjs: Convert resolve_this_binding() to ThrowCompletionOr,False,Convert resolve_this_binding() to ThrowCompletionOr,libjs,"diff --git a/Userland/Libraries/LibJS/AST.cpp b/Userland/Libraries/LibJS/AST.cpp
index e0ee8d534632..eb0f86996625 100644
--- a/Userland/Libraries/LibJS/AST.cpp
+++ b/Userland/Libraries/LibJS/AST.cpp
@@ -2252,7 +2252,7 @@ Value SpreadExpression::execute(Interpreter& interpreter, GlobalObject& global_o
 Value ThisExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
     InterpreterNodeScope node_scope { interpreter, *this };
-    return interpreter.vm().resolve_this_binding(global_object);
+    return TRY_OR_DISCARD(interpreter.vm().resolve_this_binding(global_object));
 }
 
 void ThisExpression::dump(int indent) const
diff --git a/Userland/Libraries/LibJS/Bytecode/Op.cpp b/Userland/Libraries/LibJS/Bytecode/Op.cpp
index d22e20e49fb2..dda7d778ccbc 100644
--- a/Userland/Libraries/LibJS/Bytecode/Op.cpp
+++ b/Userland/Libraries/LibJS/Bytecode/Op.cpp
@@ -315,7 +315,13 @@ void Jump::execute_impl(Bytecode::Interpreter& interpreter) const
 
 void ResolveThisBinding::execute_impl(Bytecode::Interpreter& interpreter) const
 {
-    interpreter.accumulator() = interpreter.vm().resolve_this_binding(interpreter.global_object());
+    auto this_binding_or_error = interpreter.vm().resolve_this_binding(interpreter.global_object());
+    if (this_binding_or_error.is_throw_completion()) {
+        interpreter.vm().throw_exception(interpreter.global_object(), this_binding_or_error.release_error().value());
+        return;
+    }
+
+    interpreter.accumulator() = this_binding_or_error.release_value();
 }
 
 void Jump::replace_references_impl(BasicBlock const& from, BasicBlock const& to)
diff --git a/Userland/Libraries/LibJS/Runtime/VM.cpp b/Userland/Libraries/LibJS/Runtime/VM.cpp
index 67ab56259829..50472808cd1d 100644
--- a/Userland/Libraries/LibJS/Runtime/VM.cpp
+++ b/Userland/Libraries/LibJS/Runtime/VM.cpp
@@ -503,10 +503,12 @@ void VM::throw_exception(Exception& exception)
 }
 
 // 9.4.4 ResolveThisBinding ( ), https://tc39.es/ecma262/#sec-resolvethisbinding
-Value VM::resolve_this_binding(GlobalObject& global_object)
+ThrowCompletionOr<Value> VM::resolve_this_binding(GlobalObject& global_object)
 {
+    // 1. Let envRec be GetThisEnvironment().
     auto& environment = get_this_environment(*this);
-    return TRY_OR_DISCARD(environment.get_this_binding(global_object));
+    // 2. Return ? envRec.GetThisBinding().
+    return TRY(environment.get_this_binding(global_object));
 }
 
 String VM::join_arguments(size_t start_index) const
diff --git a/Userland/Libraries/LibJS/Runtime/VM.h b/Userland/Libraries/LibJS/Runtime/VM.h
index 46529ef88443..1741b71c5ed9 100644
--- a/Userland/Libraries/LibJS/Runtime/VM.h
+++ b/Userland/Libraries/LibJS/Runtime/VM.h
@@ -155,7 +155,7 @@ class VM : public RefCounted<VM> {
         return running_execution_context().this_value;
     }
 
-    Value resolve_this_binding(GlobalObject&);
+    ThrowCompletionOr<Value> resolve_this_binding(GlobalObject&);
 
     Value last_value() const { return m_last_value; }
     void set_last_value(Badge<Bytecode::Interpreter>, Value value) { m_last_value = value; }"
6856b6168aa5002a36402bc123e280a77a05d29a,2021-11-10 18:26:56,Luke Wilde,libjs: Implement Temporal.ZonedDateTime.prototype.toLocaleString,False,Implement Temporal.ZonedDateTime.prototype.toLocaleString,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.cpp
index de82aedc34e4..da32e8ec8e2c 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.cpp
@@ -71,6 +71,7 @@ void ZonedDateTimePrototype::initialize(GlobalObject& global_object)
     define_native_function(vm.names.withCalendar, with_calendar, 1, attr);
     define_native_function(vm.names.equals, equals, 1, attr);
     define_native_function(vm.names.toString, to_string, 0, attr);
+    define_native_function(vm.names.toLocaleString, to_locale_string, 0, attr);
     define_native_function(vm.names.valueOf, value_of, 0, attr);
     define_native_function(vm.names.startOfDay, start_of_day, 0, attr);
     define_native_function(vm.names.toInstant, to_instant, 0, attr);
@@ -862,6 +863,18 @@ JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::to_string)
     return js_string(vm, TRY(temporal_zoned_date_time_to_string(global_object, *zoned_date_time, precision.precision, show_calendar, show_time_zone, show_offset, precision.increment, precision.unit, rounding_mode)));
 }
 
+// 6.3.42 Temporal.ZonedDateTime.prototype.toLocaleString ( [ locales [ , options ] ] ), https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.tolocalestring
+// NOTE: This is the minimum toLocaleString implementation for engines without ECMA-402.
+JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::to_locale_string)
+{
+    // 1. Let zonedDateTime be the this value.
+    // 2. Perform ? RequireInternalSlot(zonedDateTime, [[InitializedTemporalZonedDateTime]]).
+    auto* zoned_date_time = TRY(typed_this_object(global_object));
+
+    // 3. Return ? TemporalZonedDateTimeToString(zonedDateTime, ""auto"", ""auto"", ""auto"", ""auto"").
+    return js_string(vm, TRY(temporal_zoned_date_time_to_string(global_object, *zoned_date_time, ""auto""sv, ""auto""sv, ""auto""sv, ""auto""sv)));
+}
+
 // 6.3.44 Temporal.ZonedDateTime.prototype.valueOf ( ), https://tc39.es/proposal-temporal/#sec-temporal.zoneddatetime.prototype.valueof
 JS_DEFINE_NATIVE_FUNCTION(ZonedDateTimePrototype::value_of)
 {
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.h b/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.h
index a290750734b6..297423704f6f 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.h
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTimePrototype.h
@@ -55,6 +55,7 @@ class ZonedDateTimePrototype final : public PrototypeObject<ZonedDateTimePrototy
     JS_DECLARE_NATIVE_FUNCTION(with_calendar);
     JS_DECLARE_NATIVE_FUNCTION(equals);
     JS_DECLARE_NATIVE_FUNCTION(to_string);
+    JS_DECLARE_NATIVE_FUNCTION(to_locale_string);
     JS_DECLARE_NATIVE_FUNCTION(value_of);
     JS_DECLARE_NATIVE_FUNCTION(start_of_day);
     JS_DECLARE_NATIVE_FUNCTION(to_instant);
diff --git a/Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.toLocaleString.js b/Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.toLocaleString.js
new file mode 100644
index 000000000000..789006080693
--- /dev/null
+++ b/Userland/Libraries/LibJS/Tests/builtins/Temporal/ZonedDateTime/ZonedDateTime.prototype.toLocaleString.js
@@ -0,0 +1,20 @@
+describe(""correct behavior"", () => {
+    test(""length is 0"", () => {
+        expect(Temporal.ZonedDateTime.prototype.toLocaleString).toHaveLength(0);
+    });
+
+    test(""basic functionality"", () => {
+        const plainDateTime = new Temporal.PlainDateTime(2021, 11, 3, 1, 33, 5, 100, 200, 300);
+        const timeZone = new Temporal.TimeZone(""UTC"");
+        const zonedDateTime = plainDateTime.toZonedDateTime(timeZone);
+        expect(zonedDateTime.toLocaleString()).toBe(""2021-11-03T01:33:05.1002003+00:00[UTC]"");
+    });
+});
+
+describe(""errors"", () => {
+    test(""this value must be a Temporal.ZonedDateTime object"", () => {
+        expect(() => {
+            Temporal.ZonedDateTime.prototype.toLocaleString.call(""foo"");
+        }).toThrowWithMessage(TypeError, ""Not an object of type Temporal.ZonedDateTime"");
+    });
+});"
41066b009f69a3eaf3ad3196a2ff959853cc9321,2020-07-07 02:47:10,Andreas Kling,libcore: Don't fire Socket::on_ready_to_read if !can_read(),False,Don't fire Socket::on_ready_to_read if !can_read(),libcore,"diff --git a/Libraries/LibCore/Socket.cpp b/Libraries/LibCore/Socket.cpp
index e5d5411829c6..c8f07672f24a 100644
--- a/Libraries/LibCore/Socket.cpp
+++ b/Libraries/LibCore/Socket.cpp
@@ -204,6 +204,8 @@ void Socket::ensure_read_notifier()
     ASSERT(m_connected);
     m_read_notifier = Notifier::construct(fd(), Notifier::Event::Read, this);
     m_read_notifier->on_ready_to_read = [this] {
+        if (!can_read())
+            return;
         if (on_ready_to_read)
             on_ready_to_read();
     };"
79d8b9ae755c7d4727fdb6a22d250854ca1ae450,2019-10-04 14:32:42,Vincent Sanders,libc: unistd.h should provide SEEK_SET etc. if stdio.h is not included (#629),False,unistd.h should provide SEEK_SET etc. if stdio.h is not included (#629),libc,"diff --git a/Libraries/LibC/unistd.h b/Libraries/LibC/unistd.h
index da0d472d2b2a..6a879684e43d 100644
--- a/Libraries/LibC/unistd.h
+++ b/Libraries/LibC/unistd.h
@@ -1,3 +1,10 @@
+/* standard symbolic constants and types
+ *
+ * values from POSIX standard unix specification
+ *
+ * https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/unistd.h.html
+ */
+
 #pragma once
 
 #include <errno.h>
@@ -12,6 +19,14 @@ __BEGIN_DECLS
 #define STDOUT_FILENO 1
 #define STDERR_FILENO 2
 
+/* lseek whence values */
+#ifndef _STDIO_H /* also defined in stdio.h */
+#define SEEK_SET 0 /* from beginning of file.  */
+#define SEEK_CUR 1 /* from current position in file.  */
+#define SEEK_END 2 /* from the end of the file.  */
+#endif
+
+
 extern char** environ;
 
 int get_process_name(char* buffer, int buffer_size);"
3f4fc2c7fb28d488a338225a2b354921ed0a8e4b,2021-12-28 07:36:28,Lady Gegga,base: Add Cyrillic characters to font Katica Regular 10,False,Add Cyrillic characters to font Katica Regular 10,base,"diff --git a/Base/res/fonts/KaticaRegular10.font b/Base/res/fonts/KaticaRegular10.font
index bb4ba70fe54d..65d03c434981 100644
Binary files a/Base/res/fonts/KaticaRegular10.font and b/Base/res/fonts/KaticaRegular10.font differ"
59e47c3b11a225674f6b31f041002e88cc08a57e,2021-04-11 21:54:34,Timothy Flynn,base: Add test page for document.cookie,False,Add test page for document.cookie,base,"diff --git a/Base/res/html/misc/cookie.html b/Base/res/html/misc/cookie.html
new file mode 100644
index 000000000000..1391bab3ff33
--- /dev/null
+++ b/Base/res/html/misc/cookie.html
@@ -0,0 +1,15 @@
+<body>
+    <input type=button onclick=""setCookie('cookie1=value1')"" value=""Set Cookie 1"" />
+    <input type=button onclick=""setCookie('cookie2=value2')"" value=""Set Cookie 2"" />
+    <input type=button onclick=""setCookie('cookie3=value3')"" value=""Set Cookie 3"" />
+    <br /><pre id=cookies></pre>
+
+    <script>
+        function setCookie(cookie) {
+            document.cookie = cookie;
+            document.getElementById('cookies').innerHTML = document.cookie;
+        }
+
+        document.getElementById('cookies').innerHTML = document.cookie;
+    </script>
+</body>
diff --git a/Base/res/html/misc/welcome.html b/Base/res/html/misc/welcome.html
index da883339fe17..e54552d00b8f 100644
--- a/Base/res/html/misc/welcome.html
+++ b/Base/res/html/misc/welcome.html
@@ -38,6 +38,7 @@ <h1>Welcome to the Serenity Browser!</h1>
     <p>This page loaded in <b><span id=""loadtime""></span></b> ms</p>
     <p>Some small test pages:</p>
     <ul>
+        <li><a href=""cookie.html"">document.cookie</a></li>
         <li><a href=""last-of-type.html"">CSS :last-of-type selector</a></li>
         <li><a href=""first-of-type.html"">CSS :first-of-type selector</a></li>
         <li><a href=""background-repeat-test.html"">background image with repetition rules</a></li>"
5de4507b6f7003c5e4db5aa5509491e1aa07b21e,2022-10-21 23:31:31,Jelle Besseling,base: Add WC emoji and other blue block ones,False,Add WC emoji and other blue block ones,base,"diff --git a/Base/res/emoji/U+1F6B9.png b/Base/res/emoji/U+1F6B9.png
new file mode 100644
index 000000000000..fb9ba35f0fde
Binary files /dev/null and b/Base/res/emoji/U+1F6B9.png differ
diff --git a/Base/res/emoji/U+1F6BE.png b/Base/res/emoji/U+1F6BE.png
new file mode 100644
index 000000000000..9b59cd3ca933
Binary files /dev/null and b/Base/res/emoji/U+1F6BE.png differ
diff --git a/Base/res/emoji/U+1F6C2.png b/Base/res/emoji/U+1F6C2.png
new file mode 100644
index 000000000000..4d8229de456c
Binary files /dev/null and b/Base/res/emoji/U+1F6C2.png differ
diff --git a/Base/res/emoji/U+1F6C3.png b/Base/res/emoji/U+1F6C3.png
new file mode 100644
index 000000000000..48f9326338cb
Binary files /dev/null and b/Base/res/emoji/U+1F6C3.png differ
diff --git a/Base/res/emoji/U+1F6C4.png b/Base/res/emoji/U+1F6C4.png
new file mode 100644
index 000000000000..ffcdda57a83f
Binary files /dev/null and b/Base/res/emoji/U+1F6C4.png differ
diff --git a/Base/res/emoji/U+1F6C5.png b/Base/res/emoji/U+1F6C5.png
new file mode 100644
index 000000000000..d37f64773390
Binary files /dev/null and b/Base/res/emoji/U+1F6C5.png differ
diff --git a/Base/res/emoji/U+1F6D7.png b/Base/res/emoji/U+1F6D7.png
new file mode 100644
index 000000000000..3c7e664e8690
Binary files /dev/null and b/Base/res/emoji/U+1F6D7.png differ"
6a549f62702e8b733dd4fc0caf1fa3e114243070,2024-10-16 23:55:42,Aliaksandr Kalenik,libweb: Replace InlinePaintable with PaintableWithLines created per line,False,Replace InlinePaintable with PaintableWithLines created per line,libweb,"diff --git a/Tests/LibWeb/Layout/expected/acid1.txt b/Tests/LibWeb/Layout/expected/acid1.txt
index 7379b1b27066..c56a8e445c6a 100644
--- a/Tests/LibWeb/Layout/expected/acid1.txt
+++ b/Tests/LibWeb/Layout/expected/acid1.txt
@@ -135,7 +135,7 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
               PaintableWithLines (BlockContainer<P>) [235,55 139.96875x10]
                 TextPaintable (TextNode<#text>)
               PaintableWithLines (BlockContainer(anonymous)) [235,65 139.96875x0]
-                InlinePaintable (InlineNode<FORM>)
+                PaintableWithLines (InlineNode<FORM>)
               PaintableWithLines (BlockContainer<P>) [235,65 139.96875x19]
                 TextPaintable (TextNode<#text>)
                 RadioButtonPaintable (RadioButton<INPUT>) [263,65 12x12]
@@ -158,10 +158,10 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
       PaintableWithLines (BlockContainer(anonymous)) [20,30 480x0]
       PaintableWithLines (BlockContainer<P>) [20,335 480x65]
         TextPaintable (TextNode<#text>)
-        InlinePaintable (InlineNode<A>)
+        PaintableWithLines (InlineNode<A>)
           TextPaintable (TextNode<#text>)
         TextPaintable (TextNode<#text>)
-        InlinePaintable (InlineNode<A>)
+        PaintableWithLines (InlineNode<A>)
           TextPaintable (TextNode<#text>)
         TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer(anonymous)) [20,400 480x0]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/float-clear-by-line-break.txt b/Tests/LibWeb/Layout/expected/block-and-inline/float-clear-by-line-break.txt
index c96941ed95a9..2a0949a8709b 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/float-clear-by-line-break.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/float-clear-by-line-break.txt
@@ -26,9 +26,9 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x34]
       PaintableWithLines (BlockContainer<SPAN>.a) [8,8 100x17]
         TextPaintable (TextNode<#text>)
-      InlinePaintable (InlineNode<SPAN>)
+      PaintableWithLines (InlineNode<SPAN>)
         TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer<SPAN>.a) [8,25 100x17]
         TextPaintable (TextNode<#text>)
-      InlinePaintable (InlineNode<SPAN>)
+      PaintableWithLines (InlineNode<SPAN>)
         TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/forced-break-stops-non-whitespace-sequence.txt b/Tests/LibWeb/Layout/expected/block-and-inline/forced-break-stops-non-whitespace-sequence.txt
index 64521cdbd8b0..699f4c2f3654 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/forced-break-stops-non-whitespace-sequence.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/forced-break-stops-non-whitespace-sequence.txt
@@ -12,5 +12,5 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
     PaintableWithLines (BlockContainer<BODY>) [8,16 784x19]
       PaintableWithLines (BlockContainer<PRE>) [8,16 784x19]
-        InlinePaintable (InlineNode<SPAN>)
+        PaintableWithLines (InlineNode<SPAN>)
           TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/inline-block-vertical-align-middle.txt b/Tests/LibWeb/Layout/expected/block-and-inline/inline-block-vertical-align-middle.txt
index 7b39efb7f13a..daff1aa4fd90 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/inline-block-vertical-align-middle.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/inline-block-vertical-align-middle.txt
@@ -11,6 +11,6 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x116]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x100]
-      InlinePaintable (InlineNode<SPAN>)
+      PaintableWithLines (InlineNode<SPAN>)
         TextPaintable (TextNode<#text>)
         PaintableWithLines (BlockContainer<SPAN>.thing) [43,8 100x100]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/leading-margin-on-inline-content-that-starts-with-collapsible-whitespace.txt b/Tests/LibWeb/Layout/expected/block-and-inline/leading-margin-on-inline-content-that-starts-with-collapsible-whitespace.txt
index 09cea00ce301..3c62197bdee3 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/leading-margin-on-inline-content-that-starts-with-collapsible-whitespace.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/leading-margin-on-inline-content-that-starts-with-collapsible-whitespace.txt
@@ -14,7 +14,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x33]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x17]
-      InlinePaintable (InlineNode<DIV>)
+      PaintableWithLines (InlineNode<DIV>)
         TextPaintable (TextNode<#text>)
-      InlinePaintable (InlineNode<DIV>)
+      PaintableWithLines (InlineNode<DIV>)
         TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/margin-padding-block-inline-start.txt b/Tests/LibWeb/Layout/expected/block-and-inline/margin-padding-block-inline-start.txt
index 7a38d34245d8..56a2e9ffe89b 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/margin-padding-block-inline-start.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/margin-padding-block-inline-start.txt
@@ -13,5 +13,5 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
     PaintableWithLines (BlockContainer<BODY>) [9,9 502x83]
       PaintableWithLines (BlockContainer<DIV>.a) [10,10 500x81]
         PaintableWithLines (BlockContainer<DIV>.b) [91,31 328x19]
-          InlinePaintable (InlineNode<SPAN>)
+          PaintableWithLines (InlineNode<SPAN>)
             TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/margin-padding-block-inline.txt b/Tests/LibWeb/Layout/expected/block-and-inline/margin-padding-block-inline.txt
index 0197b88adbe8..e3092abf5d45 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/margin-padding-block-inline.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/margin-padding-block-inline.txt
@@ -13,5 +13,5 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
     PaintableWithLines (BlockContainer<BODY>) [9,9 502x103]
       PaintableWithLines (BlockContainer<DIV>.a) [10,10 500x101]
         PaintableWithLines (BlockContainer<DIV>.b) [71,51 378x19]
-          InlinePaintable (InlineNode<SPAN>)
+          PaintableWithLines (InlineNode<SPAN>)
             TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/relpos-inline-element-js-offsets.txt b/Tests/LibWeb/Layout/expected/block-and-inline/relpos-inline-element-js-offsets.txt
index dd47cd5571f8..a1c900bb1a14 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/relpos-inline-element-js-offsets.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/relpos-inline-element-js-offsets.txt
@@ -37,11 +37,11 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x152] overflow: [8,8 784x168]
       PaintableWithLines (BlockContainer(anonymous)) [8,8 784x17]
-        InlinePaintable (InlineNode<SPAN>)
+        PaintableWithLines (InlineNode<SPAN>)
           TextPaintable (TextNode<#text>)
-          InlinePaintable (InlineNode<B>)
+          PaintableWithLines (InlineNode<B>)
             TextPaintable (TextNode<#text>)
-            InlinePaintable (InlineNode<I>)
+            PaintableWithLines (InlineNode<I>)
               TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer<DIV>) [8,25 784x135]
         PaintableWithLines (BlockContainer(anonymous)) [8,25 784x68]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/relpos-inline-elements.txt b/Tests/LibWeb/Layout/expected/block-and-inline/relpos-inline-elements.txt
index deba5cb1de7b..944c8e86afdb 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/relpos-inline-elements.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/relpos-inline-elements.txt
@@ -20,11 +20,11 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
-    PaintableWithLines (BlockContainer<BODY>) [8,8 784x17] overflow: [8,8 784x42]
+    PaintableWithLines (BlockContainer<BODY>) [8,8 784x17]
       TextPaintable (TextNode<#text>)
-      InlinePaintable (InlineNode<B>)
+      PaintableWithLines (InlineNode<B>)
         TextPaintable (TextNode<#text>)
       TextPaintable (TextNode<#text>)
-      InlinePaintable (InlineNode<B>)
-        InlinePaintable (InlineNode<I>)
+      PaintableWithLines (InlineNode<B>)
+        PaintableWithLines (InlineNode<I>)
           TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/br-should-not-generate-pseudo-before.txt b/Tests/LibWeb/Layout/expected/br-should-not-generate-pseudo-before.txt
index 864e5a550ad2..3b9d8baa737f 100644
--- a/Tests/LibWeb/Layout/expected/br-should-not-generate-pseudo-before.txt
+++ b/Tests/LibWeb/Layout/expected/br-should-not-generate-pseudo-before.txt
@@ -19,7 +19,7 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x83]
     PaintableWithLines (BlockContainer<BODY>) [8,16 784x67]
       PaintableWithLines (BlockContainer<P>) [8,16 784x17]
-        InlinePaintable (InlineNode(anonymous))
+        PaintableWithLines (InlineNode(anonymous))
           TextPaintable (TextNode<#text>)
         TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer(anonymous)) [8,49 784x34]
diff --git a/Tests/LibWeb/Layout/expected/css-all-unset.txt b/Tests/LibWeb/Layout/expected/css-all-unset.txt
index 4ec6d920d4ad..c79c13c6530b 100644
--- a/Tests/LibWeb/Layout/expected/css-all-unset.txt
+++ b/Tests/LibWeb/Layout/expected/css-all-unset.txt
@@ -12,8 +12,8 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x17]
-    InlinePaintable (InlineNode<HEAD>)
-      InlinePaintable (InlineNode<STYLE>)
+    PaintableWithLines (InlineNode<HEAD>)
+      PaintableWithLines (InlineNode<STYLE>)
         TextPaintable (TextNode<#text>)
-    InlinePaintable (InlineNode<BODY>)
+    PaintableWithLines (InlineNode<BODY>)
       TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/css-attr-typed-fallback.txt b/Tests/LibWeb/Layout/expected/css-attr-typed-fallback.txt
index cde1b6a4eb70..bcc08345cb6b 100644
--- a/Tests/LibWeb/Layout/expected/css-attr-typed-fallback.txt
+++ b/Tests/LibWeb/Layout/expected/css-attr-typed-fallback.txt
@@ -30,11 +30,10 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x148]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x132]
       PaintableWithLines (BlockContainer<DIV>.string) [8,8 102x22]
-        InlinePaintable (InlineNode(anonymous))
+        PaintableWithLines (InlineNode(anonymous))
           TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer(anonymous)) [8,30 784x0]
       PaintableWithLines (BlockContainer<DIV>.string-no-fallback) [8,30 102x22]
-        InlinePaintable (InlineNode(anonymous))
       PaintableWithLines (BlockContainer(anonymous)) [8,52 784x0]
       PaintableWithLines (BlockContainer<DIV>.length) [8,52 202x22]
       PaintableWithLines (BlockContainer(anonymous)) [8,74 784x0]
diff --git a/Tests/LibWeb/Layout/expected/css-counters/basic.txt b/Tests/LibWeb/Layout/expected/css-counters/basic.txt
index 7520271ecabb..de310f4eadb8 100644
--- a/Tests/LibWeb/Layout/expected/css-counters/basic.txt
+++ b/Tests/LibWeb/Layout/expected/css-counters/basic.txt
@@ -91,44 +91,44 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
     PaintableWithLines (BlockContainer<BODY>) [8,16 784x314] overflow: [8,16 784x330]
       PaintableWithLines (BlockContainer<DIV>) [8,16 784x149]
         PaintableWithLines (BlockContainer<P>) [8,16 784x17]
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
         PaintableWithLines (BlockContainer<P>) [8,49 784x17]
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
         PaintableWithLines (BlockContainer<P>) [8,82 784x17]
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
         PaintableWithLines (BlockContainer<P>) [8,115 784x17]
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
         PaintableWithLines (BlockContainer<P>) [8,148 784x17]
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer<DIV>) [8,181 784x149]
         PaintableWithLines (BlockContainer<P>) [8,181 784x17]
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
         PaintableWithLines (BlockContainer<P>) [8,214 784x17]
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
         PaintableWithLines (BlockContainer<P>) [8,247 784x17]
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
         PaintableWithLines (BlockContainer<P>) [8,280 784x17]
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
         PaintableWithLines (BlockContainer<P>) [8,313 784x17]
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer(anonymous)) [8,346 784x0]
diff --git a/Tests/LibWeb/Layout/expected/css-counters/counters-function.txt b/Tests/LibWeb/Layout/expected/css-counters/counters-function.txt
index 13f00b57ec17..16932351b12f 100644
--- a/Tests/LibWeb/Layout/expected/css-counters/counters-function.txt
+++ b/Tests/LibWeb/Layout/expected/css-counters/counters-function.txt
@@ -171,83 +171,83 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
       PaintableWithLines (BlockContainer<DIV>.ol) [8,8 784x255]
         PaintableWithLines (BlockContainer(anonymous)) [24,8 768x0]
         PaintableWithLines (BlockContainer<DIV>.li) [24,8 768x17]
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
         PaintableWithLines (BlockContainer(anonymous)) [24,25 768x0]
         PaintableWithLines (BlockContainer<DIV>.li) [24,25 768x17]
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
         PaintableWithLines (BlockContainer(anonymous)) [24,42 768x0]
         PaintableWithLines (BlockContainer<DIV>.li) [24,42 768x17]
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
         PaintableWithLines (BlockContainer(anonymous)) [24,59 768x0]
         PaintableWithLines (BlockContainer<DIV>.li) [24,59 768x153]
           PaintableWithLines (BlockContainer(anonymous)) [24,59 768x17]
-            InlinePaintable (InlineNode(anonymous))
+            PaintableWithLines (InlineNode(anonymous))
               TextPaintable (TextNode<#text>)
           PaintableWithLines (BlockContainer<DIV>.ol) [24,76 768x136]
             PaintableWithLines (BlockContainer(anonymous)) [40,76 752x0]
             PaintableWithLines (BlockContainer<DIV>.li) [40,76 752x17]
-              InlinePaintable (InlineNode(anonymous))
+              PaintableWithLines (InlineNode(anonymous))
                 TextPaintable (TextNode<#text>)
               TextPaintable (TextNode<#text>)
             PaintableWithLines (BlockContainer(anonymous)) [40,93 752x0]
             PaintableWithLines (BlockContainer<DIV>.li) [40,93 752x17]
-              InlinePaintable (InlineNode(anonymous))
+              PaintableWithLines (InlineNode(anonymous))
                 TextPaintable (TextNode<#text>)
               TextPaintable (TextNode<#text>)
             PaintableWithLines (BlockContainer(anonymous)) [40,110 752x0]
             PaintableWithLines (BlockContainer<DIV>.li) [40,110 752x68]
               PaintableWithLines (BlockContainer(anonymous)) [40,110 752x17]
-                InlinePaintable (InlineNode(anonymous))
+                PaintableWithLines (InlineNode(anonymous))
                   TextPaintable (TextNode<#text>)
               PaintableWithLines (BlockContainer<DIV>.ol) [40,127 752x51]
                 PaintableWithLines (BlockContainer(anonymous)) [56,127 736x0]
                 PaintableWithLines (BlockContainer<DIV>.li) [56,127 736x17]
-                  InlinePaintable (InlineNode(anonymous))
+                  PaintableWithLines (InlineNode(anonymous))
                     TextPaintable (TextNode<#text>)
                   TextPaintable (TextNode<#text>)
                 PaintableWithLines (BlockContainer(anonymous)) [56,144 736x0]
                 PaintableWithLines (BlockContainer<DIV>.li) [56,144 736x17]
-                  InlinePaintable (InlineNode(anonymous))
+                  PaintableWithLines (InlineNode(anonymous))
                     TextPaintable (TextNode<#text>)
                   TextPaintable (TextNode<#text>)
                 PaintableWithLines (BlockContainer(anonymous)) [56,161 736x0]
                 PaintableWithLines (BlockContainer<DIV>.li) [56,161 736x17]
-                  InlinePaintable (InlineNode(anonymous))
+                  PaintableWithLines (InlineNode(anonymous))
                     TextPaintable (TextNode<#text>)
                   TextPaintable (TextNode<#text>)
                 PaintableWithLines (BlockContainer(anonymous)) [56,178 736x0]
               PaintableWithLines (BlockContainer(anonymous)) [40,178 752x0]
             PaintableWithLines (BlockContainer(anonymous)) [40,178 752x0]
             PaintableWithLines (BlockContainer<DIV>.li) [40,178 752x17]
-              InlinePaintable (InlineNode(anonymous))
+              PaintableWithLines (InlineNode(anonymous))
                 TextPaintable (TextNode<#text>)
               TextPaintable (TextNode<#text>)
             PaintableWithLines (BlockContainer(anonymous)) [40,195 752x0]
             PaintableWithLines (BlockContainer<DIV>.li) [40,195 752x17]
-              InlinePaintable (InlineNode(anonymous))
+              PaintableWithLines (InlineNode(anonymous))
                 TextPaintable (TextNode<#text>)
               TextPaintable (TextNode<#text>)
             PaintableWithLines (BlockContainer(anonymous)) [40,212 752x0]
           PaintableWithLines (BlockContainer(anonymous)) [24,212 768x0]
         PaintableWithLines (BlockContainer(anonymous)) [24,212 768x0]
         PaintableWithLines (BlockContainer<DIV>.li) [24,212 768x17]
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
         PaintableWithLines (BlockContainer(anonymous)) [24,229 768x0]
         PaintableWithLines (BlockContainer<DIV>.li) [24,229 768x17]
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
         PaintableWithLines (BlockContainer(anonymous)) [24,246 768x0]
         PaintableWithLines (BlockContainer<DIV>.li) [24,246 768x17]
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
         PaintableWithLines (BlockContainer(anonymous)) [24,263 768x0]
diff --git a/Tests/LibWeb/Layout/expected/css-counters/hidden-elements.txt b/Tests/LibWeb/Layout/expected/css-counters/hidden-elements.txt
index 905f73be978e..b5779a20c7c6 100644
--- a/Tests/LibWeb/Layout/expected/css-counters/hidden-elements.txt
+++ b/Tests/LibWeb/Layout/expected/css-counters/hidden-elements.txt
@@ -46,22 +46,22 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
     PaintableWithLines (BlockContainer<BODY>) [8,16 784x149]
       PaintableWithLines (BlockContainer<P>) [8,16 784x17]
-        InlinePaintable (InlineNode(anonymous))
+        PaintableWithLines (InlineNode(anonymous))
           TextPaintable (TextNode<#text>)
         TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer<P>) [8,49 784x17]
-        InlinePaintable (InlineNode(anonymous))
+        PaintableWithLines (InlineNode(anonymous))
           TextPaintable (TextNode<#text>)
         TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer<P>) [8,82 784x17]
-        InlinePaintable (InlineNode(anonymous))
+        PaintableWithLines (InlineNode(anonymous))
           TextPaintable (TextNode<#text>)
         TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer<P>) [8,115 784x17]
-        InlinePaintable (InlineNode(anonymous))
+        PaintableWithLines (InlineNode(anonymous))
           TextPaintable (TextNode<#text>)
         TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer<P>) [8,148 784x17]
-        InlinePaintable (InlineNode(anonymous))
+        PaintableWithLines (InlineNode(anonymous))
           TextPaintable (TextNode<#text>)
         TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/css-font-size-math.txt b/Tests/LibWeb/Layout/expected/css-font-size-math.txt
index 77c186eb4fda..911f782f4bbe 100644
--- a/Tests/LibWeb/Layout/expected/css-font-size-math.txt
+++ b/Tests/LibWeb/Layout/expected/css-font-size-math.txt
@@ -26,13 +26,13 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x79]
-      InlinePaintable (InlineNode<SPAN>)
+      PaintableWithLines (InlineNode<SPAN>)
         TextPaintable (TextNode<#text>)
-        InlinePaintable (InlineNode<SPAN>)
+        PaintableWithLines (InlineNode<SPAN>)
           TextPaintable (TextNode<#text>)
-          InlinePaintable (InlineNode<SPAN>)
+          PaintableWithLines (InlineNode<SPAN>)
             TextPaintable (TextNode<#text>)
-            InlinePaintable (InlineNode<SPAN>)
+            PaintableWithLines (InlineNode<SPAN>)
               TextPaintable (TextNode<#text>)
-              InlinePaintable (InlineNode<SPAN>)
+              PaintableWithLines (InlineNode<SPAN>)
                 TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/css-namespace-rule-matches.txt b/Tests/LibWeb/Layout/expected/css-namespace-rule-matches.txt
index ac38bbce6052..514ae94a596f 100644
--- a/Tests/LibWeb/Layout/expected/css-namespace-rule-matches.txt
+++ b/Tests/LibWeb/Layout/expected/css-namespace-rule-matches.txt
@@ -15,6 +15,6 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
     PaintableWithLines (BlockContainer<BODY>) [8,20 784x22] overflow: [8,20 784x42]
       PaintableWithLines (BlockContainer<P>) [8,20 784x22]
-        InlinePaintable (InlineNode<A>)
+        PaintableWithLines (InlineNode<A>)
           TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer(anonymous)) [8,62 784x0]
diff --git a/Tests/LibWeb/Layout/expected/css-namespace-rule-no-match.txt b/Tests/LibWeb/Layout/expected/css-namespace-rule-no-match.txt
index fb3354d90175..8806f85e5521 100644
--- a/Tests/LibWeb/Layout/expected/css-namespace-rule-no-match.txt
+++ b/Tests/LibWeb/Layout/expected/css-namespace-rule-no-match.txt
@@ -15,6 +15,6 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
     PaintableWithLines (BlockContainer<BODY>) [8,20 784x22] overflow: [8,20 784x42]
       PaintableWithLines (BlockContainer<P>) [8,20 784x22]
-        InlinePaintable (InlineNode<A>)
+        PaintableWithLines (InlineNode<A>)
           TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer(anonymous)) [8,62 784x0]
diff --git a/Tests/LibWeb/Layout/expected/css-namespace-tag-name-selector.txt b/Tests/LibWeb/Layout/expected/css-namespace-tag-name-selector.txt
index 65e1f344ac18..3831d91f65b9 100644
--- a/Tests/LibWeb/Layout/expected/css-namespace-tag-name-selector.txt
+++ b/Tests/LibWeb/Layout/expected/css-namespace-tag-name-selector.txt
@@ -34,6 +34,6 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
         PaintableWithLines (BlockContainer<math>) [318,50 2x110] overflow: [319,51 100x100]
           PaintableWithLines (BlockContainer<a>) [319,51 100x100]
       PaintableWithLines (BlockContainer<DIV>) [8,163 784x46]
-        InlinePaintable (InlineNode<A>)
+        PaintableWithLines (InlineNode<A>)
           TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer(anonymous)) [8,209 784x0]
diff --git a/Tests/LibWeb/Layout/expected/css-quotes-nesting.txt b/Tests/LibWeb/Layout/expected/css-quotes-nesting.txt
index 95902db24b70..c0b10ddf864f 100644
--- a/Tests/LibWeb/Layout/expected/css-quotes-nesting.txt
+++ b/Tests/LibWeb/Layout/expected/css-quotes-nesting.txt
@@ -211,100 +211,90 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x67]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x51]
       PaintableWithLines (BlockContainer<DIV>.a) [8,8 784x17]
-        InlinePaintable (InlineNode<SPAN>)
-          InlinePaintable (InlineNode(anonymous))
+        PaintableWithLines (InlineNode<SPAN>)
           TextPaintable (TextNode<#text>)
-          InlinePaintable (InlineNode<SPAN>)
-            InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode<SPAN>)
             TextPaintable (TextNode<#text>)
-            InlinePaintable (InlineNode<SPAN>)
-              InlinePaintable (InlineNode(anonymous))
+            PaintableWithLines (InlineNode<SPAN>)
               TextPaintable (TextNode<#text>)
-              InlinePaintable (InlineNode<SPAN>)
-                InlinePaintable (InlineNode(anonymous))
+              PaintableWithLines (InlineNode<SPAN>)
                 TextPaintable (TextNode<#text>)
-                InlinePaintable (InlineNode<SPAN>)
-                  InlinePaintable (InlineNode(anonymous))
+                PaintableWithLines (InlineNode<SPAN>)
                   TextPaintable (TextNode<#text>)
-                  InlinePaintable (InlineNode(anonymous))
                 TextPaintable (TextNode<#text>)
-                InlinePaintable (InlineNode(anonymous))
               TextPaintable (TextNode<#text>)
-              InlinePaintable (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
-            InlinePaintable (InlineNode(anonymous))
           TextPaintable (TextNode<#text>)
-          InlinePaintable (InlineNode(anonymous))
       PaintableWithLines (BlockContainer(anonymous)) [8,25 784x0]
       PaintableWithLines (BlockContainer<DIV>.b) [8,25 784x17]
-        InlinePaintable (InlineNode<SPAN>)
-          InlinePaintable (InlineNode(anonymous))
+        PaintableWithLines (InlineNode<SPAN>)
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
-          InlinePaintable (InlineNode<SPAN>)
-            InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode<SPAN>)
+            PaintableWithLines (InlineNode(anonymous))
               TextPaintable (TextNode<#text>)
             TextPaintable (TextNode<#text>)
-            InlinePaintable (InlineNode<SPAN>)
-              InlinePaintable (InlineNode(anonymous))
+            PaintableWithLines (InlineNode<SPAN>)
+              PaintableWithLines (InlineNode(anonymous))
                 TextPaintable (TextNode<#text>)
               TextPaintable (TextNode<#text>)
-              InlinePaintable (InlineNode<SPAN>)
-                InlinePaintable (InlineNode(anonymous))
+              PaintableWithLines (InlineNode<SPAN>)
+                PaintableWithLines (InlineNode(anonymous))
                   TextPaintable (TextNode<#text>)
                 TextPaintable (TextNode<#text>)
-                InlinePaintable (InlineNode<SPAN>)
-                  InlinePaintable (InlineNode(anonymous))
+                PaintableWithLines (InlineNode<SPAN>)
+                  PaintableWithLines (InlineNode(anonymous))
                     TextPaintable (TextNode<#text>)
                   TextPaintable (TextNode<#text>)
-                  InlinePaintable (InlineNode(anonymous))
+                  PaintableWithLines (InlineNode(anonymous))
                     TextPaintable (TextNode<#text>)
                 TextPaintable (TextNode<#text>)
-                InlinePaintable (InlineNode(anonymous))
+                PaintableWithLines (InlineNode(anonymous))
                   TextPaintable (TextNode<#text>)
               TextPaintable (TextNode<#text>)
-              InlinePaintable (InlineNode(anonymous))
+              PaintableWithLines (InlineNode(anonymous))
                 TextPaintable (TextNode<#text>)
             TextPaintable (TextNode<#text>)
-            InlinePaintable (InlineNode(anonymous))
+            PaintableWithLines (InlineNode(anonymous))
               TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer(anonymous)) [8,42 784x0]
       PaintableWithLines (BlockContainer<DIV>.c) [8,42 784x17]
-        InlinePaintable (InlineNode<SPAN>)
-          InlinePaintable (InlineNode(anonymous))
+        PaintableWithLines (InlineNode<SPAN>)
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
-          InlinePaintable (InlineNode<SPAN>)
-            InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode<SPAN>)
+            PaintableWithLines (InlineNode(anonymous))
               TextPaintable (TextNode<#text>)
             TextPaintable (TextNode<#text>)
-            InlinePaintable (InlineNode<SPAN>)
-              InlinePaintable (InlineNode(anonymous))
+            PaintableWithLines (InlineNode<SPAN>)
+              PaintableWithLines (InlineNode(anonymous))
                 TextPaintable (TextNode<#text>)
               TextPaintable (TextNode<#text>)
-              InlinePaintable (InlineNode<SPAN>)
-                InlinePaintable (InlineNode(anonymous))
+              PaintableWithLines (InlineNode<SPAN>)
+                PaintableWithLines (InlineNode(anonymous))
                   TextPaintable (TextNode<#text>)
                 TextPaintable (TextNode<#text>)
-                InlinePaintable (InlineNode<SPAN>)
-                  InlinePaintable (InlineNode(anonymous))
+                PaintableWithLines (InlineNode<SPAN>)
+                  PaintableWithLines (InlineNode(anonymous))
                     TextPaintable (TextNode<#text>)
                   TextPaintable (TextNode<#text>)
-                  InlinePaintable (InlineNode(anonymous))
+                  PaintableWithLines (InlineNode(anonymous))
                     TextPaintable (TextNode<#text>)
                 TextPaintable (TextNode<#text>)
-                InlinePaintable (InlineNode(anonymous))
+                PaintableWithLines (InlineNode(anonymous))
                   TextPaintable (TextNode<#text>)
               TextPaintable (TextNode<#text>)
-              InlinePaintable (InlineNode(anonymous))
+              PaintableWithLines (InlineNode(anonymous))
                 TextPaintable (TextNode<#text>)
             TextPaintable (TextNode<#text>)
-            InlinePaintable (InlineNode(anonymous))
+            PaintableWithLines (InlineNode(anonymous))
               TextPaintable (TextNode<#text>)
           TextPaintable (TextNode<#text>)
-          InlinePaintable (InlineNode(anonymous))
+          PaintableWithLines (InlineNode(anonymous))
             TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer(anonymous)) [8,59 784x0]
diff --git a/Tests/LibWeb/Layout/expected/details-open.txt b/Tests/LibWeb/Layout/expected/details-open.txt
index 9db760215643..831029caec96 100644
--- a/Tests/LibWeb/Layout/expected/details-open.txt
+++ b/Tests/LibWeb/Layout/expected/details-open.txt
@@ -26,6 +26,6 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
           TextPaintable (TextNode<#text>)
           MarkerPaintable (ListItemMarkerBox(anonymous)) [8,8 12x17]
         PaintableWithLines (BlockContainer<SLOT>) [8,25 784x17]
-          InlinePaintable (InlineNode<SPAN>)
+          PaintableWithLines (InlineNode<SPAN>)
             TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer(anonymous)) [8,42 784x0]
diff --git a/Tests/LibWeb/Layout/expected/dialog-open-non-modal.txt b/Tests/LibWeb/Layout/expected/dialog-open-non-modal.txt
index 6442d0956274..529cc13304bf 100644
--- a/Tests/LibWeb/Layout/expected/dialog-open-non-modal.txt
+++ b/Tests/LibWeb/Layout/expected/dialog-open-non-modal.txt
@@ -14,5 +14,5 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x0]
       PaintableWithLines (BlockContainer<DIALOG>) [339.84375,8 120.3125x55]
-        InlinePaintable (InlineNode<SPAN>)
+        PaintableWithLines (InlineNode<SPAN>)
           TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/display-contents-with-in-children.txt b/Tests/LibWeb/Layout/expected/display-contents-with-in-children.txt
index 5bd07ea37ab7..bd63628ab06b 100644
--- a/Tests/LibWeb/Layout/expected/display-contents-with-in-children.txt
+++ b/Tests/LibWeb/Layout/expected/display-contents-with-in-children.txt
@@ -7,5 +7,5 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x17]
-    InlinePaintable (InlineNode<SPAN>)
+    PaintableWithLines (InlineNode<SPAN>)
       TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/display-table-inline-children.txt b/Tests/LibWeb/Layout/expected/display-table-inline-children.txt
index 558eea1c13df..ae96948dca39 100644
--- a/Tests/LibWeb/Layout/expected/display-table-inline-children.txt
+++ b/Tests/LibWeb/Layout/expected/display-table-inline-children.txt
@@ -28,6 +28,6 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600] overflow: [0,0 1208x616]
         PaintableBox (Box<DIV>.aligncenter.block-image) [8,8 1200x600]
           PaintableBox (Box(anonymous)) [8,8 1200x600]
             PaintableWithLines (BlockContainer(anonymous)) [8,8 1200x600]
-              InlinePaintable (InlineNode<A>)
+              PaintableWithLines (InlineNode<A>)
                 ImagePaintable (ImageBox<IMG>) [8,8 1200x600]
       PaintableWithLines (BlockContainer(anonymous)) [8,608 784x0]
diff --git a/Tests/LibWeb/Layout/expected/font-fractional-size.txt b/Tests/LibWeb/Layout/expected/font-fractional-size.txt
index cec38fe7c1d3..53a1e895444c 100644
--- a/Tests/LibWeb/Layout/expected/font-fractional-size.txt
+++ b/Tests/LibWeb/Layout/expected/font-fractional-size.txt
@@ -24,11 +24,11 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x39]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x23]
-      InlinePaintable (InlineNode<SPAN>.a)
+      PaintableWithLines (InlineNode<SPAN>.a)
         TextPaintable (TextNode<#text>)
       TextPaintable (TextNode<#text>)
-      InlinePaintable (InlineNode<SPAN>.b)
+      PaintableWithLines (InlineNode<SPAN>.b)
         TextPaintable (TextNode<#text>)
       TextPaintable (TextNode<#text>)
-      InlinePaintable (InlineNode<SPAN>.c)
+      PaintableWithLines (InlineNode<SPAN>.c)
         TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/font-size-legacy.txt b/Tests/LibWeb/Layout/expected/font-size-legacy.txt
index a3577a3e86d1..0e33170e19b8 100644
--- a/Tests/LibWeb/Layout/expected/font-size-legacy.txt
+++ b/Tests/LibWeb/Layout/expected/font-size-legacy.txt
@@ -9,5 +9,5 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x33]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x17]
-      InlinePaintable (InlineNode<FONT>)
+      PaintableWithLines (InlineNode<FONT>)
         TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/font-with-many-normal-values.txt b/Tests/LibWeb/Layout/expected/font-with-many-normal-values.txt
index 47b30d6a4e41..a5c98e442a90 100644
--- a/Tests/LibWeb/Layout/expected/font-with-many-normal-values.txt
+++ b/Tests/LibWeb/Layout/expected/font-with-many-normal-values.txt
@@ -31,14 +31,14 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x216]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x200]
-      InlinePaintable (InlineNode<SPAN>.one)
+      PaintableWithLines (InlineNode<SPAN>.one)
         TextPaintable (TextNode<#text>)
       TextPaintable (TextNode<#text>)
-      InlinePaintable (InlineNode<SPAN>.two)
+      PaintableWithLines (InlineNode<SPAN>.two)
         TextPaintable (TextNode<#text>)
       TextPaintable (TextNode<#text>)
-      InlinePaintable (InlineNode<SPAN>.three)
+      PaintableWithLines (InlineNode<SPAN>.three)
         TextPaintable (TextNode<#text>)
       TextPaintable (TextNode<#text>)
-      InlinePaintable (InlineNode<SPAN>.four)
+      PaintableWithLines (InlineNode<SPAN>.four)
         TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/host-pseudo-class-basic.txt b/Tests/LibWeb/Layout/expected/host-pseudo-class-basic.txt
index 95bf12f74a15..44731f67715e 100644
--- a/Tests/LibWeb/Layout/expected/host-pseudo-class-basic.txt
+++ b/Tests/LibWeb/Layout/expected/host-pseudo-class-basic.txt
@@ -15,5 +15,5 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x47]
       PaintableWithLines (BlockContainer<MAIN>) [8,8 784x47]
         PaintableWithLines (BlockContainer<DIV>) [8,8 373.96875x47]
-          InlinePaintable (InlineNode<SPAN>)
+          PaintableWithLines (InlineNode<SPAN>)
             TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/nowrap-and-no-line-break-opportunity.txt b/Tests/LibWeb/Layout/expected/nowrap-and-no-line-break-opportunity.txt
index a14e545262e3..133a7587a34a 100644
--- a/Tests/LibWeb/Layout/expected/nowrap-and-no-line-break-opportunity.txt
+++ b/Tests/LibWeb/Layout/expected/nowrap-and-no-line-break-opportunity.txt
@@ -20,10 +20,10 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x19]
-      PaintableWithLines (BlockContainer<DIV>.fixed_width) [8,8 52x19] overflow: [9,9 78.921875x17]
-        InlinePaintable (InlineNode<SPAN>.nowrap)
+      PaintableWithLines (BlockContainer<DIV>.fixed_width) [8,8 52x19]
+        PaintableWithLines (InlineNode<SPAN>.nowrap)
           TextPaintable (TextNode<#text>)
-        InlinePaintable (InlineNode<SPAN>)
+        PaintableWithLines (InlineNode<SPAN>)
           TextPaintable (TextNode<#text>)
-        InlinePaintable (InlineNode<SPAN>.nowrap)
+        PaintableWithLines (InlineNode<SPAN>.nowrap)
           TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/overflow-with-padding.txt b/Tests/LibWeb/Layout/expected/overflow-with-padding.txt
index 9b34c8f756e5..d11e951a9461 100644
--- a/Tests/LibWeb/Layout/expected/overflow-with-padding.txt
+++ b/Tests/LibWeb/Layout/expected/overflow-with-padding.txt
@@ -49,7 +49,7 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
       PaintableWithLines (BlockContainer<DIV>.outer) [8,8 452x122] overflow: [9,9 450x152]
         PaintableWithLines (BlockContainer<DIV>.inner) [34,34 402x102]
           TextPaintable (TextNode<#text>)
-          InlinePaintable (InlineNode<SPAN>)
+          PaintableWithLines (InlineNode<SPAN>)
       PaintableWithLines (BlockContainer(anonymous)) [8,130 784x0]
       PaintableWithLines (BlockContainer<DIV>.outer) [8,130 452x122] overflow: [9,131 450x247]
         PaintableWithLines (BlockContainer<DIV>.inner) [34,156 402x102] overflow: [35,157 400x221]
diff --git a/Tests/LibWeb/Layout/expected/percentage-max-height-when-containing-block-has-indefinite-height.txt b/Tests/LibWeb/Layout/expected/percentage-max-height-when-containing-block-has-indefinite-height.txt
index 6ee219826815..bd7e01bec9c3 100644
--- a/Tests/LibWeb/Layout/expected/percentage-max-height-when-containing-block-has-indefinite-height.txt
+++ b/Tests/LibWeb/Layout/expected/percentage-max-height-when-containing-block-has-indefinite-height.txt
@@ -48,7 +48,7 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
           TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer(anonymous)) [10,31 780x0]
       PaintableWithLines (BlockContainer<DIV>.inline.formatting-context) [10,31 780x19]
-        InlinePaintable (InlineNode<DIV>)
+        PaintableWithLines (InlineNode<DIV>)
           TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer(anonymous)) [10,50 780x0]
       PaintableBox (Box<DIV>.flex.formatting-context) [10,50 780x21]
diff --git a/Tests/LibWeb/Layout/expected/picture-source-media-query.txt b/Tests/LibWeb/Layout/expected/picture-source-media-query.txt
index 019ad83aed43..d1c71a211db2 100644
--- a/Tests/LibWeb/Layout/expected/picture-source-media-query.txt
+++ b/Tests/LibWeb/Layout/expected/picture-source-media-query.txt
@@ -14,6 +14,6 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x416]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x400]
-      InlinePaintable (InlineNode<PICTURE>)
-        InlinePaintable (InlineNode<SOURCE>)
+      PaintableWithLines (InlineNode<PICTURE>)
+        PaintableWithLines (InlineNode<SOURCE>)
         ImagePaintable (ImageBox<IMG>) [8,8 400x400]
diff --git a/Tests/LibWeb/Layout/expected/pre.txt b/Tests/LibWeb/Layout/expected/pre.txt
index 3d3be09e8fc5..e6bab2e143d2 100644
--- a/Tests/LibWeb/Layout/expected/pre.txt
+++ b/Tests/LibWeb/Layout/expected/pre.txt
@@ -10,5 +10,5 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x17]
-      InlinePaintable (InlineNode<PRE>)
+      PaintableWithLines (InlineNode<PRE>)
         TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/shadow-tree-removed-from-dom-receives-event.txt b/Tests/LibWeb/Layout/expected/shadow-tree-removed-from-dom-receives-event.txt
index ac80c5231b66..bd034253b65e 100644
--- a/Tests/LibWeb/Layout/expected/shadow-tree-removed-from-dom-receives-event.txt
+++ b/Tests/LibWeb/Layout/expected/shadow-tree-removed-from-dom-receives-event.txt
@@ -14,6 +14,6 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x17]
       PaintableWithLines (BlockContainer<DIV>#container) [8,8 784x17]
-        InlinePaintable (InlineNode<SPAN>)
+        PaintableWithLines (InlineNode<SPAN>)
           TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer(anonymous)) [8,25 784x0]
diff --git a/Tests/LibWeb/Layout/expected/space-is-soft-line-break-opportunity.txt b/Tests/LibWeb/Layout/expected/space-is-soft-line-break-opportunity.txt
index 2bc69445f6e7..9ad4f42be8b7 100644
--- a/Tests/LibWeb/Layout/expected/space-is-soft-line-break-opportunity.txt
+++ b/Tests/LibWeb/Layout/expected/space-is-soft-line-break-opportunity.txt
@@ -19,8 +19,8 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x36]
       PaintableWithLines (BlockContainer<DIV>.fixed_width) [8,8 52x36]
-        InlinePaintable (InlineNode<SPAN>.nowrap)
+        PaintableWithLines (InlineNode<SPAN>.nowrap)
           TextPaintable (TextNode<#text>)
-        InlinePaintable (InlineNode<SPAN>)
-        InlinePaintable (InlineNode<SPAN>.nowrap)
+        PaintableWithLines (InlineNode<SPAN>)
+        PaintableWithLines (InlineNode<SPAN>.nowrap)
           TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/span-with-padding.txt b/Tests/LibWeb/Layout/expected/span-with-padding.txt
index 6bf02e8cccbb..64bb54eeedee 100644
--- a/Tests/LibWeb/Layout/expected/span-with-padding.txt
+++ b/Tests/LibWeb/Layout/expected/span-with-padding.txt
@@ -9,5 +9,5 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x36]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x20]
-      InlinePaintable (InlineNode<SPAN>)
+      PaintableWithLines (InlineNode<SPAN>)
         TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/svg/svg-with-zero-intrinsic-size-and-no-viewbox.txt b/Tests/LibWeb/Layout/expected/svg/svg-with-zero-intrinsic-size-and-no-viewbox.txt
index 63475f451f71..6d1c47a2d60b 100644
--- a/Tests/LibWeb/Layout/expected/svg/svg-with-zero-intrinsic-size-and-no-viewbox.txt
+++ b/Tests/LibWeb/Layout/expected/svg/svg-with-zero-intrinsic-size-and-no-viewbox.txt
@@ -6,4 +6,4 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<svg>) [0,0 800x0]
-    InlinePaintable (InlineNode<rect>)
+    PaintableWithLines (InlineNode<rect>)
diff --git a/Tests/LibWeb/Layout/expected/table/row-outer-size-with-computed-size.txt b/Tests/LibWeb/Layout/expected/table/row-outer-size-with-computed-size.txt
index bbe928810169..1761ebe09e5f 100644
--- a/Tests/LibWeb/Layout/expected/table/row-outer-size-with-computed-size.txt
+++ b/Tests/LibWeb/Layout/expected/table/row-outer-size-with-computed-size.txt
@@ -41,7 +41,7 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
             PaintableBox (Box<TR>) [10,10 45.21875x9.5] overflow: [10,10 45.21875x21]
               PaintableWithLines (BlockContainer<TD>) [10,10 2x9.5]
               PaintableWithLines (BlockContainer<TD>) [14,10 41.21875x21]
-                InlinePaintable (InlineNode<A>)
+                PaintableWithLines (InlineNode<A>)
                   TextPaintable (TextNode<#text>)
             PaintableBox (Box<TR>) [10,21.5 45.21875x9.5]
               PaintableWithLines (BlockContainer<TD>) [10,21.5 2x9.5]
diff --git a/Tests/LibWeb/Layout/expected/vertical-align-middle.txt b/Tests/LibWeb/Layout/expected/vertical-align-middle.txt
index 0640f3c5ba5a..27c2e96365d7 100644
--- a/Tests/LibWeb/Layout/expected/vertical-align-middle.txt
+++ b/Tests/LibWeb/Layout/expected/vertical-align-middle.txt
@@ -16,6 +16,6 @@ ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x66]
     PaintableWithLines (BlockContainer(anonymous)) [0,0 800x0]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x50]
-      InlinePaintable (InlineNode<A>)
+      PaintableWithLines (InlineNode<A>)
         TextPaintable (TextNode<#text>)
         PaintableWithLines (BlockContainer<DIV>.test) [49,8 50x50]
diff --git a/Tests/LibWeb/Layout/expected/writing-modes-direction-inline.txt b/Tests/LibWeb/Layout/expected/writing-modes-direction-inline.txt
index 918b8814e96c..c74e21ee1aa3 100644
--- a/Tests/LibWeb/Layout/expected/writing-modes-direction-inline.txt
+++ b/Tests/LibWeb/Layout/expected/writing-modes-direction-inline.txt
@@ -16,9 +16,9 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
   PaintableWithLines (BlockContainer<HTML>) [0,0 800x33]
-    PaintableWithLines (BlockContainer<BODY>) [8,8 784x17] overflow: [8,8 784.34375x17]
-      InlinePaintable (InlineNode<SPAN>)
+    PaintableWithLines (BlockContainer<BODY>) [8,8 784x17]
+      PaintableWithLines (InlineNode<SPAN>)
         TextPaintable (TextNode<#text>)
       TextPaintable (TextNode<#text>)
-      InlinePaintable (InlineNode<SPAN>)
+      PaintableWithLines (InlineNode<SPAN>)
         TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Text/expected/HTML/dimension-attributes.txt b/Tests/LibWeb/Text/expected/HTML/dimension-attributes.txt
index d7243653d2cc..f147fa7fda02 100644
--- a/Tests/LibWeb/Text/expected/HTML/dimension-attributes.txt
+++ b/Tests/LibWeb/Text/expected/HTML/dimension-attributes.txt
@@ -49,12 +49,12 @@ Test embed.vspace = ""120."" maps to marginTop: 120px
 Test embed.vspace = ""100"" maps to marginBottom: 100px
 Test embed.vspace = "" 00110 "" maps to marginBottom: 110px
 Test embed.vspace = ""120."" maps to marginBottom: 120px
-Test embed.width = ""100"" maps to width: 100px
-Test embed.width = "" 00110 "" maps to width: 110px
-Test embed.width = ""120."" maps to width: 120px
-Test embed.height = ""100"" maps to height: 100px
-Test embed.height = "" 00110 "" maps to height: 110px
-Test embed.height = ""120."" maps to height: 120px
+Test embed.width = ""100"" maps to width: 0px
+Test embed.width = "" 00110 "" maps to width: 0px
+Test embed.width = ""120."" maps to width: 0px
+Test embed.height = ""100"" maps to height: 0px
+Test embed.height = "" 00110 "" maps to height: 0px
+Test embed.height = ""120."" maps to height: 0px
 Test tr.height = ""100"" maps to height: 100px
 Test tr.height = "" 00110 "" maps to height: 110px
 Test tr.height = ""120."" maps to height: 120px
diff --git a/Tests/LibWeb/Text/input/hit_testing/inline-stacking-context.html b/Tests/LibWeb/Text/input/hit_testing/inline-stacking-context.html
index 5d748e81b8b1..5129e27f7aa4 100644
--- a/Tests/LibWeb/Text/input/hit_testing/inline-stacking-context.html
+++ b/Tests/LibWeb/Text/input/hit_testing/inline-stacking-context.html
@@ -18,6 +18,6 @@
 <script src=""../include.js""></script>
 <script>
     test(() => {
-        println(internals.hitTest(50, 50).node.parentNode === document.getElementById(""inline-stacking-context""));
+        println(internals.hitTest(50, 50).node === document.getElementById(""inline-stacking-context""));
     });
 </script>
diff --git a/Userland/Libraries/LibWeb/DOM/Element.cpp b/Userland/Libraries/LibWeb/DOM/Element.cpp
index e70a44db215c..08968887f922 100644
--- a/Userland/Libraries/LibWeb/DOM/Element.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Element.cpp
@@ -1364,7 +1364,7 @@ void Element::set_scroll_left(double x)
     if (!paintable_box())
         return;
 
-    if (!paintable_box()->layout_box().is_scroll_container())
+    if (!paintable_box()->layout_node_with_style_and_box_metrics().is_scroll_container())
         return;
 
     // FIXME: or the element has no overflow.
@@ -1421,7 +1421,7 @@ void Element::set_scroll_top(double y)
     if (!paintable_box())
         return;
 
-    if (!paintable_box()->layout_box().is_scroll_container())
+    if (!paintable_box()->layout_node_with_style_and_box_metrics().is_scroll_container())
         return;
 
     // FIXME: or the element has no overflow.
diff --git a/Userland/Libraries/LibWeb/Dump.cpp b/Userland/Libraries/LibWeb/Dump.cpp
index cb8fb27c8a2c..3a2a217f5440 100644
--- a/Userland/Libraries/LibWeb/Dump.cpp
+++ b/Userland/Libraries/LibWeb/Dump.cpp
@@ -383,11 +383,13 @@ void dump_tree(StringBuilder& builder, Layout::Node const& layout_node, bool sho
 
     if (is<Layout::InlineNode>(layout_node) && layout_node.first_paintable()) {
         auto const& inline_node = static_cast<Layout::InlineNode const&>(layout_node);
-        auto const& inline_paintable = static_cast<Painting::InlinePaintable const&>(*inline_node.first_paintable());
-        auto const& fragments = inline_paintable.fragments();
-        for (size_t fragment_index = 0; fragment_index < fragments.size(); ++fragment_index) {
-            auto const& fragment = fragments[fragment_index];
-            dump_fragment(fragment, fragment_index);
+        for (auto const& paintable : inline_node.paintables()) {
+            auto const& paintable_with_lines = static_cast<Painting::PaintableWithLines const&>(paintable);
+            auto const& fragments = paintable_with_lines.fragments();
+            for (size_t fragment_index = 0; fragment_index < fragments.size(); ++fragment_index) {
+                auto const& fragment = fragments[fragment_index];
+                dump_fragment(fragment, fragment_index);
+            }
         }
     }
 
diff --git a/Userland/Libraries/LibWeb/Forward.h b/Userland/Libraries/LibWeb/Forward.h
index 57d0235611e3..ab5075a13c28 100644
--- a/Userland/Libraries/LibWeb/Forward.h
+++ b/Userland/Libraries/LibWeb/Forward.h
@@ -574,6 +574,7 @@ class CheckBox;
 class FlexFormattingContext;
 class FormattingContext;
 class ImageBox;
+class InlineNode;
 class InlineFormattingContext;
 class Label;
 class LabelableNode;
diff --git a/Userland/Libraries/LibWeb/Layout/Box.cpp b/Userland/Libraries/LibWeb/Layout/Box.cpp
index a9ceda87448f..e89583b3e24b 100644
--- a/Userland/Libraries/LibWeb/Layout/Box.cpp
+++ b/Userland/Libraries/LibWeb/Layout/Box.cpp
@@ -34,37 +34,6 @@ void Box::visit_edges(Cell::Visitor& visitor)
     visitor.visit(m_contained_abspos_children);
 }
 
-// https://www.w37.org/TR/css-overflow-3/#overflow-control
-static bool overflow_value_makes_box_a_scroll_container(CSS::Overflow overflow)
-{
-    switch (overflow) {
-    case CSS::Overflow::Clip:
-    case CSS::Overflow::Visible:
-        return false;
-    case CSS::Overflow::Auto:
-    case CSS::Overflow::Hidden:
-    case CSS::Overflow::Scroll:
-        return true;
-    }
-    VERIFY_NOT_REACHED();
-}
-
-// https://www.w3.org/TR/css-overflow-3/#scroll-container
-bool Box::is_scroll_container() const
-{
-    // NOTE: This isn't in the spec, but we want the viewport to behave like a scroll container.
-    if (is_viewport())
-        return true;
-
-    return overflow_value_makes_box_a_scroll_container(computed_values().overflow_x())
-        || overflow_value_makes_box_a_scroll_container(computed_values().overflow_y());
-}
-
-bool Box::is_body() const
-{
-    return dom_node() && dom_node() == document().body();
-}
-
 JS::GCPtr<Painting::Paintable> Box::create_paintable() const
 {
     return Painting::PaintableBox::create(*this);
diff --git a/Userland/Libraries/LibWeb/Layout/Box.h b/Userland/Libraries/LibWeb/Layout/Box.h
index 93928d961090..be8e29bd5238 100644
--- a/Userland/Libraries/LibWeb/Layout/Box.h
+++ b/Userland/Libraries/LibWeb/Layout/Box.h
@@ -25,8 +25,6 @@ class Box : public NodeWithStyleAndBoxModelMetrics {
     Painting::PaintableBox const* paintable_box() const;
     Painting::PaintableBox* paintable_box();
 
-    bool is_body() const;
-
     // https://www.w3.org/TR/css-images-3/#natural-dimensions
     Optional<CSSPixels> natural_width() const { return m_natural_width; }
     Optional<CSSPixels> natural_height() const { return m_natural_height; }
@@ -50,8 +48,6 @@ class Box : public NodeWithStyleAndBoxModelMetrics {
 
     virtual JS::GCPtr<Painting::Paintable> create_paintable() const override;
 
-    bool is_scroll_container() const;
-
     void add_contained_abspos_child(JS::NonnullGCPtr<Node> child) { m_contained_abspos_children.append(child); }
     void clear_contained_abspos_children() { m_contained_abspos_children.clear(); }
     Vector<JS::NonnullGCPtr<Node>> const& contained_abspos_children() const { return m_contained_abspos_children; }
diff --git a/Userland/Libraries/LibWeb/Layout/InlineNode.cpp b/Userland/Libraries/LibWeb/Layout/InlineNode.cpp
index 9466ee43f87e..b0a848f90ff8 100644
--- a/Userland/Libraries/LibWeb/Layout/InlineNode.cpp
+++ b/Userland/Libraries/LibWeb/Layout/InlineNode.cpp
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2018-2022, Andreas Kling <andreas@ladybird.org>
  * Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
+ * Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -23,9 +24,17 @@ InlineNode::InlineNode(DOM::Document& document, DOM::Element* element, NonnullRe
 
 InlineNode::~InlineNode() = default;
 
-JS::GCPtr<Painting::Paintable> InlineNode::create_paintable() const
+JS::GCPtr<Painting::PaintableWithLines> InlineNode::create_paintable_for_line_with_index(size_t line_index) const
 {
-    return Painting::InlinePaintable::create(*this);
+    for (auto const& paintable : paintables()) {
+        if (is<Painting::PaintableWithLines>(paintable)) {
+            auto const& paintable_with_lines = static_cast<Painting::PaintableWithLines const&>(paintable);
+            if (paintable_with_lines.line_index() == line_index) {
+                return const_cast<Painting::PaintableWithLines&>(paintable_with_lines);
+            }
+        }
+    }
+    return Painting::PaintableWithLines::create(*this, line_index);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/Layout/InlineNode.h b/Userland/Libraries/LibWeb/Layout/InlineNode.h
index 122cf3d7c223..14687d6fa0ea 100644
--- a/Userland/Libraries/LibWeb/Layout/InlineNode.h
+++ b/Userland/Libraries/LibWeb/Layout/InlineNode.h
@@ -18,7 +18,7 @@ class InlineNode final : public NodeWithStyleAndBoxModelMetrics {
     InlineNode(DOM::Document&, DOM::Element*, NonnullRefPtr<CSS::StyleProperties>);
     virtual ~InlineNode() override;
 
-    virtual JS::GCPtr<Painting::Paintable> create_paintable() const override;
+    JS::GCPtr<Painting::PaintableWithLines> create_paintable_for_line_with_index(size_t line_index) const;
 };
 
 }
diff --git a/Userland/Libraries/LibWeb/Layout/LayoutState.cpp b/Userland/Libraries/LibWeb/Layout/LayoutState.cpp
index 3b4ecc478a73..472e3f046975 100644
--- a/Userland/Libraries/LibWeb/Layout/LayoutState.cpp
+++ b/Userland/Libraries/LibWeb/Layout/LayoutState.cpp
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2022-2024, Andreas Kling <andreas@ladybird.org>
  * Copyright (c) 2024, Sam Atkins <atkinssj@serenityos.org>
+ * Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -165,50 +166,47 @@ void LayoutState::resolve_relative_positions()
         auto& used_values = *it.value;
         auto& node = const_cast<NodeWithStyle&>(used_values.node());
 
-        auto* paintable = node.first_paintable();
-        if (!paintable)
-            continue;
-        if (!is<Painting::InlinePaintable>(*paintable))
-            continue;
-
-        auto const& inline_paintable = static_cast<Painting::InlinePaintable&>(*paintable);
-        for (auto& fragment : inline_paintable.fragments()) {
-            auto const& fragment_node = fragment.layout_node();
-            if (!is<Layout::NodeWithStyleAndBoxModelMetrics>(*fragment_node.parent()))
+        for (auto& paintable : node.paintables()) {
+            if (!(is<Painting::PaintableWithLines>(paintable) && is<Layout::InlineNode>(paintable.layout_node())))
                 continue;
-            // Collect effective relative position offset from inline-flow parent chain.
-            CSSPixelPoint offset;
-            for (auto* ancestor = fragment_node.parent(); ancestor; ancestor = ancestor->parent()) {
-                if (!is<Layout::NodeWithStyleAndBoxModelMetrics>(*ancestor))
-                    break;
-                if (!ancestor->display().is_inline_outside() || !ancestor->display().is_flow_inside())
-                    break;
-                if (ancestor->computed_values().position() == CSS::Positioning::Relative) {
-                    auto const& ancestor_node = static_cast<Layout::NodeWithStyleAndBoxModelMetrics const&>(*ancestor);
-                    auto const& inset = ancestor_node.box_model().inset;
-                    offset.translate_by(inset.left, inset.top);
+
+            auto const& inline_paintable = static_cast<Painting::PaintableWithLines&>(paintable);
+            for (auto& fragment : inline_paintable.fragments()) {
+                auto const& fragment_node = fragment.layout_node();
+                if (!is<Layout::NodeWithStyleAndBoxModelMetrics>(*fragment_node.parent()))
+                    continue;
+                // Collect effective relative position offset from inline-flow parent chain.
+                CSSPixelPoint offset;
+                for (auto* ancestor = fragment_node.parent(); ancestor; ancestor = ancestor->parent()) {
+                    if (!is<Layout::NodeWithStyleAndBoxModelMetrics>(*ancestor))
+                        break;
+                    if (!ancestor->display().is_inline_outside() || !ancestor->display().is_flow_inside())
+                        break;
+                    if (ancestor->computed_values().position() == CSS::Positioning::Relative) {
+                        auto const& ancestor_node = static_cast<Layout::NodeWithStyleAndBoxModelMetrics const&>(*ancestor);
+                        auto const& inset = ancestor_node.box_model().inset;
+                        offset.translate_by(inset.left, inset.top);
+                    }
                 }
+                const_cast<Painting::PaintableFragment&>(fragment).set_offset(fragment.offset().translated(offset));
             }
-            const_cast<Painting::PaintableFragment&>(fragment).set_offset(fragment.offset().translated(offset));
         }
     }
 }
 
 static void build_paint_tree(Node& node, Painting::Paintable* parent_paintable = nullptr)
 {
-    Painting::Paintable* paintable = nullptr;
-    if (node.first_paintable()) {
-        paintable = const_cast<Painting::Paintable*>(node.first_paintable());
-        if (parent_paintable && !paintable->forms_unconnected_subtree()) {
-            VERIFY(!paintable->parent());
-            parent_paintable->append_child(*paintable);
+    for (auto& paintable : node.paintables()) {
+        if (parent_paintable && !paintable.forms_unconnected_subtree()) {
+            VERIFY(!paintable.parent());
+            parent_paintable->append_child(paintable);
         }
-        paintable->set_dom_node(node.dom_node());
+        paintable.set_dom_node(node.dom_node());
         if (node.dom_node())
             node.dom_node()->set_paintable(paintable);
     }
     for (auto* child = node.first_child(); child; child = child->next_sibling()) {
-        build_paint_tree(*child, paintable);
+        build_paint_tree(*child, node.first_paintable());
     }
 }
 
@@ -224,14 +222,35 @@ void LayoutState::commit(Box& root)
         node.clear_paintables();
         return TraversalDecision::Continue;
     });
+
+    HashTable<Layout::InlineNode*> inline_nodes;
+
     root.document().for_each_shadow_including_inclusive_descendant([&](DOM::Node& node) {
         node.clear_paintable();
+        if (node.layout_node() && is<InlineNode>(node.layout_node())) {
+            inline_nodes.set(static_cast<InlineNode*>(node.layout_node()));
+        }
         return TraversalDecision::Continue;
     });
 
     HashTable<Layout::TextNode*> text_nodes;
-
-    Vector<Painting::PaintableWithLines&> paintables_with_lines;
+    HashTable<Painting::PaintableWithLines*> inline_node_paintables;
+
+    auto try_to_relocate_fragment_in_inline_node = [&](auto& fragment, size_t line_index) -> bool {
+        for (auto const* parent = fragment.layout_node().parent(); parent; parent = parent->parent()) {
+            if (is<InlineNode>(*parent)) {
+                auto& inline_node = const_cast<InlineNode&>(static_cast<InlineNode const&>(*parent));
+                auto line_paintable = inline_node.create_paintable_for_line_with_index(line_index);
+                line_paintable->add_fragment(fragment);
+                if (!inline_node_paintables.contains(line_paintable.ptr())) {
+                    inline_node_paintables.set(line_paintable.ptr());
+                    inline_node.add_paintable(line_paintable);
+                }
+                return true;
+            }
+        }
+        return false;
+    };
 
     for (auto& it : used_values_per_layout_node) {
         auto& used_values = *it.value;
@@ -247,7 +266,6 @@ void LayoutState::commit(Box& root)
         }
 
         auto paintable = node.create_paintable();
-
         node.add_paintable(paintable);
 
         // For boxes, transfer all the state needed for painting.
@@ -264,11 +282,17 @@ void LayoutState::commit(Box& root)
 
             if (is<Painting::PaintableWithLines>(paintable_box)) {
                 auto& paintable_with_lines = static_cast<Painting::PaintableWithLines&>(paintable_box);
-                for (auto& line_box : used_values.line_boxes) {
-                    for (auto& fragment : line_box.fragments())
-                        paintable_with_lines.add_fragment(fragment);
+                for (size_t line_index = 0; line_index < used_values.line_boxes.size(); ++line_index) {
+                    auto& line_box = used_values.line_boxes[line_index];
+                    for (auto& fragment : line_box.fragments()) {
+                        if (fragment.layout_node().is_text_node())
+                            text_nodes.set(static_cast<Layout::TextNode*>(const_cast<Layout::Node*>(&fragment.layout_node())));
+                        auto did_relocate_fragment = try_to_relocate_fragment_in_inline_node(fragment, line_index);
+                        if (!did_relocate_fragment) {
+                            paintable_with_lines.add_fragment(fragment);
+                        }
+                    }
                 }
-                paintables_with_lines.append(paintable_with_lines);
             }
 
             if (used_values.computed_svg_transforms().has_value() && is<Painting::SVGGraphicsPaintable>(paintable_box)) {
@@ -288,6 +312,15 @@ void LayoutState::commit(Box& root)
         }
     }
 
+    // Create paintables for inline nodes without fragments to make possible querying their geometry.
+    for (auto& inline_node : inline_nodes) {
+        auto* paintable = inline_node->first_paintable();
+        if (paintable)
+            continue;
+        paintable = inline_node->create_paintable_for_line_with_index(0);
+        inline_node->add_paintable(paintable);
+    }
+
     // Resolve relative positions for regular boxes (not line box fragments):
     // NOTE: This needs to occur before fragments are transferred into the corresponding inline paintables, because
     //       after this transfer, the containing_line_box_fragment will no longer be valid.
@@ -324,32 +357,6 @@ void LayoutState::commit(Box& root)
         paintable.set_offset(offset);
     }
 
-    // Make a pass over all the line boxes to:
-    // - Collect all text nodes, so we can create paintables for them later.
-    // - Relocate fragments into matching inline paintables
-    for (auto& paintable_with_lines : paintables_with_lines) {
-        Vector<Painting::PaintableFragment> fragments_with_inline_paintables_removed;
-        for (auto& fragment : paintable_with_lines.fragments()) {
-            if (fragment.layout_node().is_text_node())
-                text_nodes.set(static_cast<Layout::TextNode*>(const_cast<Layout::Node*>(&fragment.layout_node())));
-
-            auto find_closest_inline_paintable = [&](auto& fragment) -> Painting::InlinePaintable const* {
-                for (auto const* parent = fragment.layout_node().parent(); parent; parent = parent->parent()) {
-                    if (is<InlineNode>(*parent))
-                        return static_cast<Painting::InlinePaintable const*>(parent->first_paintable());
-                }
-                return nullptr;
-            };
-
-            if (auto const* inline_paintable = find_closest_inline_paintable(fragment)) {
-                const_cast<Painting::InlinePaintable*>(inline_paintable)->fragments().append(fragment);
-            } else {
-                fragments_with_inline_paintables_removed.append(fragment);
-            }
-        }
-        paintable_with_lines.set_fragments(move(fragments_with_inline_paintables_removed));
-    }
-
     for (auto* text_node : text_nodes) {
         text_node->add_paintable(text_node->create_paintable());
         auto* paintable = text_node->first_paintable();
@@ -369,6 +376,26 @@ void LayoutState::commit(Box& root)
 
     resolve_relative_positions();
 
+    // Measure size of paintables created for inline nodes.
+    for (auto& paintable_with_lines : inline_node_paintables) {
+        if (!is<InlineNode>(paintable_with_lines->layout_node())) {
+            continue;
+        }
+
+        auto const& fragments = paintable_with_lines->fragments();
+        if (fragments.is_empty()) {
+            continue;
+        }
+
+        paintable_with_lines->set_offset(fragments.first().offset());
+        CSSPixelSize size;
+        for (auto const& fragment : fragments) {
+            size.set_width(size.width() + fragment.width());
+            size.set_height(max(size.height(), fragment.height()));
+        }
+        paintable_with_lines->set_content_size(size.width(), size.height());
+    }
+
     // Measure overflow in scroll containers.
     for (auto& it : used_values_per_layout_node) {
         auto& used_values = *it.value;
diff --git a/Userland/Libraries/LibWeb/Layout/Node.cpp b/Userland/Libraries/LibWeb/Layout/Node.cpp
index aa9b4f10667f..d998c3b2db53 100644
--- a/Userland/Libraries/LibWeb/Layout/Node.cpp
+++ b/Userland/Libraries/LibWeb/Layout/Node.cpp
@@ -1017,6 +1017,35 @@ void NodeWithStyle::transfer_table_box_computed_values_to_wrapper_computed_value
     reset_table_box_computed_values_used_by_wrapper_to_init_values();
 }
 
+bool NodeWithStyle::is_body() const
+{
+    return dom_node() && dom_node() == document().body();
+}
+
+static bool overflow_value_makes_box_a_scroll_container(CSS::Overflow overflow)
+{
+    switch (overflow) {
+    case CSS::Overflow::Clip:
+    case CSS::Overflow::Visible:
+        return false;
+    case CSS::Overflow::Auto:
+    case CSS::Overflow::Hidden:
+    case CSS::Overflow::Scroll:
+        return true;
+    }
+    VERIFY_NOT_REACHED();
+}
+
+bool NodeWithStyle::is_scroll_container() const
+{
+    // NOTE: This isn't in the spec, but we want the viewport to behave like a scroll container.
+    if (is_viewport())
+        return true;
+
+    return overflow_value_makes_box_a_scroll_container(computed_values().overflow_x())
+        || overflow_value_makes_box_a_scroll_container(computed_values().overflow_y());
+}
+
 void Node::add_paintable(JS::GCPtr<Painting::Paintable> paintable)
 {
     if (!paintable)
diff --git a/Userland/Libraries/LibWeb/Layout/Node.h b/Userland/Libraries/LibWeb/Layout/Node.h
index 505f0d811de2..ff8404dc0722 100644
--- a/Userland/Libraries/LibWeb/Layout/Node.h
+++ b/Userland/Libraries/LibWeb/Layout/Node.h
@@ -69,6 +69,8 @@ class Node
 
     Painting::Paintable* first_paintable() { return m_paintable.first(); }
     Painting::Paintable const* first_paintable() const { return m_paintable.first(); }
+    PaintableList& paintables() { return m_paintable; }
+    PaintableList const& paintables() const { return m_paintable; }
     void add_paintable(JS::GCPtr<Painting::Paintable>);
     void clear_paintables();
 
@@ -220,6 +222,9 @@ class NodeWithStyle : public Node {
 
     void transfer_table_box_computed_values_to_wrapper_computed_values(CSS::ComputedValues& wrapper_computed_values);
 
+    bool is_body() const;
+    bool is_scroll_container() const;
+
     virtual void visit_edges(Cell::Visitor& visitor) override;
 
 protected:
diff --git a/Userland/Libraries/LibWeb/Painting/LabelablePaintable.cpp b/Userland/Libraries/LibWeb/Painting/LabelablePaintable.cpp
index 1b037cfa9a65..4b7089f43d30 100644
--- a/Userland/Libraries/LibWeb/Painting/LabelablePaintable.cpp
+++ b/Userland/Libraries/LibWeb/Painting/LabelablePaintable.cpp
@@ -27,12 +27,12 @@ void LabelablePaintable::set_being_pressed(bool being_pressed)
 
 Layout::FormAssociatedLabelableNode const& LabelablePaintable::layout_box() const
 {
-    return static_cast<Layout::FormAssociatedLabelableNode const&>(PaintableBox::layout_box());
+    return static_cast<Layout::FormAssociatedLabelableNode const&>(PaintableBox::layout_node_with_style_and_box_metrics());
 }
 
 Layout::FormAssociatedLabelableNode& LabelablePaintable::layout_box()
 {
-    return static_cast<Layout::FormAssociatedLabelableNode&>(PaintableBox::layout_box());
+    return static_cast<Layout::FormAssociatedLabelableNode&>(PaintableBox::layout_node_with_style_and_box_metrics());
 }
 
 LabelablePaintable::DispatchEventOfSameName LabelablePaintable::handle_mousedown(Badge<EventHandler>, CSSPixelPoint, unsigned button, unsigned)
diff --git a/Userland/Libraries/LibWeb/Painting/MediaPaintable.cpp b/Userland/Libraries/LibWeb/Painting/MediaPaintable.cpp
index 7c3f721793d2..5ad7fec75c6d 100644
--- a/Userland/Libraries/LibWeb/Painting/MediaPaintable.cpp
+++ b/Userland/Libraries/LibWeb/Painting/MediaPaintable.cpp
@@ -272,7 +272,7 @@ MediaPaintable::DispatchEventOfSameName MediaPaintable::handle_mousedown(Badge<E
     if (button != UIEvents::MouseButton::Primary)
         return DispatchEventOfSameName::Yes;
 
-    auto& media_element = *verify_cast<HTML::HTMLMediaElement>(layout_box().dom_node());
+    auto& media_element = *verify_cast<HTML::HTMLMediaElement>(layout_node_with_style_and_box_metrics().dom_node());
     auto const& cached_layout_boxes = media_element.cached_layout_boxes({});
 
     auto position_adjusted_by_scroll_offset = position;
@@ -294,7 +294,7 @@ MediaPaintable::DispatchEventOfSameName MediaPaintable::handle_mousedown(Badge<E
 
 MediaPaintable::DispatchEventOfSameName MediaPaintable::handle_mouseup(Badge<EventHandler>, CSSPixelPoint position, unsigned button, unsigned)
 {
-    auto& media_element = *verify_cast<HTML::HTMLMediaElement>(layout_box().dom_node());
+    auto& media_element = *verify_cast<HTML::HTMLMediaElement>(layout_node_with_style_and_box_metrics().dom_node());
     auto const& cached_layout_boxes = media_element.cached_layout_boxes({});
 
     auto position_adjusted_by_scroll_offset = position;
@@ -342,7 +342,7 @@ MediaPaintable::DispatchEventOfSameName MediaPaintable::handle_mouseup(Badge<Eve
 
 MediaPaintable::DispatchEventOfSameName MediaPaintable::handle_mousemove(Badge<EventHandler>, CSSPixelPoint position, unsigned, unsigned)
 {
-    auto& media_element = *verify_cast<HTML::HTMLMediaElement>(layout_box().dom_node());
+    auto& media_element = *verify_cast<HTML::HTMLMediaElement>(layout_node_with_style_and_box_metrics().dom_node());
     auto const& cached_layout_boxes = media_element.cached_layout_boxes({});
 
     auto position_adjusted_by_scroll_offset = position;
diff --git a/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp b/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
index 1cab96f22478..59c9fc02502b 100644
--- a/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
+++ b/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2022-2023, Andreas Kling <andreas@ladybird.org>
  * Copyright (c) 2022-2023, Sam Atkins <atkinssj@serenityos.org>
+ * Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -34,16 +35,31 @@ JS::NonnullGCPtr<PaintableWithLines> PaintableWithLines::create(Layout::BlockCon
     return block_container.heap().allocate_without_realm<PaintableWithLines>(block_container);
 }
 
+JS::NonnullGCPtr<PaintableWithLines> PaintableWithLines::create(Layout::InlineNode const& inline_node, size_t line_index)
+{
+    return inline_node.heap().allocate_without_realm<PaintableWithLines>(inline_node, line_index);
+}
+
 JS::NonnullGCPtr<PaintableBox> PaintableBox::create(Layout::Box const& layout_box)
 {
     return layout_box.heap().allocate_without_realm<PaintableBox>(layout_box);
 }
 
+JS::NonnullGCPtr<PaintableBox> PaintableBox::create(Layout::InlineNode const& layout_box)
+{
+    return layout_box.heap().allocate_without_realm<PaintableBox>(layout_box);
+}
+
 PaintableBox::PaintableBox(Layout::Box const& layout_box)
     : Paintable(layout_box)
 {
 }
 
+PaintableBox::PaintableBox(Layout::InlineNode const& layout_box)
+    : Paintable(layout_box)
+{
+}
+
 PaintableBox::~PaintableBox()
 {
 }
@@ -53,6 +69,12 @@ PaintableWithLines::PaintableWithLines(Layout::BlockContainer const& layout_box)
 {
 }
 
+PaintableWithLines::PaintableWithLines(Layout::InlineNode const& inline_node, size_t line_index)
+    : PaintableBox(inline_node)
+    , m_line_index(line_index)
+{
+}
+
 PaintableWithLines::~PaintableWithLines()
 {
 }
@@ -112,7 +134,7 @@ void PaintableBox::set_scroll_offset(CSSPixelPoint offset)
     // the user agent must run these steps:
 
     // 1. Let doc be the element’s node document.
-    auto& document = layout_box().document();
+    auto& document = layout_node().document();
 
     // FIXME: 2. If the element is a snap container, run the steps to update snapchanging targets for the element with
     //           the element’s eventual snap target in the block axis as newBlockTarget and the element’s eventual snap
@@ -125,7 +147,7 @@ void PaintableBox::set_scroll_offset(CSSPixelPoint offset)
         return;
 
     // 4. Append the element to doc’s pending scroll event targets.
-    document.pending_scroll_event_targets().append(*layout_box().dom_node());
+    document.pending_scroll_event_targets().append(*layout_node_with_style_and_box_metrics().dom_node());
 
     set_needs_display(InvalidateDisplayList::No);
 }
@@ -143,7 +165,9 @@ void PaintableBox::set_offset(CSSPixelPoint offset)
 void PaintableBox::set_content_size(CSSPixelSize size)
 {
     m_content_size = size;
-    layout_box().did_set_content_size();
+    if (is<Layout::Box>(Paintable::layout_node())) {
+        static_cast<Layout::Box&>(layout_node_with_style_and_box_metrics()).did_set_content_size();
+    }
 }
 
 CSSPixelPoint PaintableBox::offset() const
@@ -197,7 +221,7 @@ CSSPixelRect PaintableBox::absolute_paint_rect() const
 Optional<CSSPixelRect> PaintableBox::get_clip_rect() const
 {
     auto clip = computed_values().clip();
-    if (clip.is_rect() && layout_box().is_absolutely_positioned()) {
+    if (clip.is_rect() && layout_node_with_style_and_box_metrics().is_absolutely_positioned()) {
         auto border_box = absolute_border_box_rect();
         return clip.to_rect().resolved(layout_node(), border_box);
     }
@@ -238,7 +262,10 @@ void PaintableBox::after_paint(PaintContext& context, [[maybe_unused]] PaintPhas
 bool PaintableBox::is_scrollable(ScrollDirection direction) const
 {
     auto overflow = direction == ScrollDirection::Horizontal ? computed_values().overflow_x() : computed_values().overflow_y();
-    auto scrollable_overflow_size = direction == ScrollDirection::Horizontal ? scrollable_overflow_rect()->width() : scrollable_overflow_rect()->height();
+    auto scrollable_overflow_rect = this->scrollable_overflow_rect();
+    if (!scrollable_overflow_rect.has_value())
+        return false;
+    auto scrollable_overflow_size = direction == ScrollDirection::Horizontal ? scrollable_overflow_rect->width() : scrollable_overflow_rect->height();
     auto scrollport_size = direction == ScrollDirection::Horizontal ? absolute_padding_box_rect().width() : absolute_padding_box_rect().height();
     if ((is_viewport() && overflow != CSS::Overflow::Hidden) || overflow == CSS::Overflow::Auto)
         return scrollable_overflow_size > scrollport_size;
@@ -363,7 +390,7 @@ void PaintableBox::paint(PaintContext& context, PaintPhase phase) const
         }
     }
 
-    if (phase == PaintPhase::Overlay && layout_box().document().inspected_layout_node() == &layout_box()) {
+    if (phase == PaintPhase::Overlay && layout_node().document().inspected_layout_node() == &layout_node_with_style_and_box_metrics()) {
         auto content_rect = absolute_rect();
 
         auto margin_box = box_model().margin_box();
@@ -390,10 +417,10 @@ void PaintableBox::paint(PaintContext& context, PaintPhase phase) const
         auto& font = Platform::FontPlugin::the().default_font();
 
         StringBuilder builder;
-        if (layout_box().dom_node())
-            builder.append(layout_box().dom_node()->debug_description());
+        if (layout_node_with_style_and_box_metrics().dom_node())
+            builder.append(layout_node_with_style_and_box_metrics().dom_node()->debug_description());
         else
-            builder.append(layout_box().debug_description());
+            builder.append(layout_node_with_style_and_box_metrics().debug_description());
         builder.appendff("" {}x{} @ {},{}"", border_rect.width(), border_rect.height(), border_rect.x(), border_rect.y());
         auto size_text = MUST(builder.to_string());
         auto size_text_rect = border_rect;
@@ -445,10 +472,10 @@ void PaintableBox::paint_backdrop_filter(PaintContext& context) const
 void PaintableBox::paint_background(PaintContext& context) const
 {
     // If the body's background properties were propagated to the root element, do no re-paint the body's background.
-    if (layout_box().is_body() && document().html_element()->should_use_body_background_properties())
+    if (layout_node_with_style_and_box_metrics().is_body() && document().html_element()->should_use_body_background_properties())
         return;
 
-    Painting::paint_background(context, layout_box(), computed_values().image_rendering(), m_resolved_background, normalized_border_radii_data());
+    Painting::paint_background(context, layout_node_with_style_and_box_metrics(), computed_values().image_rendering(), m_resolved_background, normalized_border_radii_data());
 }
 
 void PaintableBox::paint_box_shadow(PaintContext& context) const
@@ -787,14 +814,14 @@ bool PaintableBox::handle_mousewheel(Badge<EventHandler>, CSSPixelPoint, unsigne
     return true;
 }
 
-Layout::BlockContainer const& PaintableWithLines::layout_box() const
+Layout::NodeWithStyleAndBoxModelMetrics const& PaintableWithLines::layout_node_with_style_and_box_metrics() const
 {
-    return static_cast<Layout::BlockContainer const&>(PaintableBox::layout_box());
+    return static_cast<Layout::NodeWithStyleAndBoxModelMetrics const&>(PaintableBox::layout_node_with_style_and_box_metrics());
 }
 
-Layout::BlockContainer& PaintableWithLines::layout_box()
+Layout::NodeWithStyleAndBoxModelMetrics& PaintableWithLines::layout_node_with_style_and_box_metrics()
 {
-    return static_cast<Layout::BlockContainer&>(PaintableBox::layout_box());
+    return static_cast<Layout::NodeWithStyleAndBoxModelMetrics&>(PaintableBox::layout_node_with_style_and_box_metrics());
 }
 
 TraversalDecision PaintableBox::hit_test_scrollbars(CSSPixelPoint position, Function<TraversalDecision(HitTestResult)> const& callback) const
@@ -822,7 +849,7 @@ TraversalDecision PaintableBox::hit_test(CSSPixelPoint position, HitTestType typ
     if (hit_test_scrollbars(position_adjusted_by_scroll_offset, callback) == TraversalDecision::Break)
         return TraversalDecision::Break;
 
-    if (layout_box().is_viewport()) {
+    if (layout_node_with_style_and_box_metrics().is_viewport()) {
         auto& viewport_paintable = const_cast<ViewportPaintable&>(static_cast<ViewportPaintable const&>(*this));
         viewport_paintable.build_stacking_context_tree_if_needed();
         viewport_paintable.document().update_paint_and_hit_testing_properties_if_needed();
@@ -874,7 +901,7 @@ TraversalDecision PaintableWithLines::hit_test(CSSPixelPoint position, HitTestTy
     auto position_adjusted_by_scroll_offset = position;
     position_adjusted_by_scroll_offset.translate_by(-cumulative_offset_of_enclosing_scroll_frame());
 
-    if (!layout_box().children_are_inline() || m_fragments.is_empty()) {
+    if (!layout_node_with_style_and_box_metrics().children_are_inline() || m_fragments.is_empty()) {
         return PaintableBox::hit_test(position, type, callback);
     }
 
@@ -1102,7 +1129,7 @@ void PaintableBox::resolve_paint_properties()
     CSSPixelRect background_rect;
     Color background_color = computed_values.background_color();
     auto const* background_layers = &computed_values.background_layers();
-    if (layout_box().is_root_element()) {
+    if (layout_node_with_style_and_box_metrics().is_root_element()) {
         background_rect = navigable()->viewport_rect();
 
         // Section 2.11.2: If the computed value of background-image on the root element is none and its background-color is transparent,
@@ -1122,7 +1149,7 @@ void PaintableBox::resolve_paint_properties()
 
     m_resolved_background.layers.clear();
     if (background_layers) {
-        m_resolved_background = resolve_background_layers(*background_layers, layout_box(), background_color, background_rect, normalized_border_radii_data());
+        m_resolved_background = resolve_background_layers(*background_layers, layout_node_with_style_and_box_metrics(), background_color, background_rect, normalized_border_radii_data());
     };
 }
 
diff --git a/Userland/Libraries/LibWeb/Painting/PaintableBox.h b/Userland/Libraries/LibWeb/Painting/PaintableBox.h
index 7543940e0f88..8a1c0180cf0a 100644
--- a/Userland/Libraries/LibWeb/Painting/PaintableBox.h
+++ b/Userland/Libraries/LibWeb/Painting/PaintableBox.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2022, Andreas Kling <andreas@ladybird.org>
+ * Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -26,6 +27,7 @@ class PaintableBox : public Paintable
 
 public:
     static JS::NonnullGCPtr<PaintableBox> create(Layout::Box const&);
+    static JS::NonnullGCPtr<PaintableBox> create(Layout::InlineNode const&);
     virtual ~PaintableBox();
 
     virtual void before_paint(PaintContext&, PaintPhase) const override;
@@ -37,10 +39,10 @@ class PaintableBox : public Paintable
     virtual Optional<Gfx::Bitmap::MaskKind> get_mask_type() const { return {}; }
     virtual RefPtr<Gfx::Bitmap> calculate_mask(PaintContext&, CSSPixelRect const&) const { return {}; }
 
-    Layout::Box& layout_box() { return static_cast<Layout::Box&>(Paintable::layout_node()); }
-    Layout::Box const& layout_box() const { return static_cast<Layout::Box const&>(Paintable::layout_node()); }
+    Layout::NodeWithStyleAndBoxModelMetrics& layout_node_with_style_and_box_metrics() { return static_cast<Layout::NodeWithStyleAndBoxModelMetrics&>(Paintable::layout_node()); }
+    Layout::NodeWithStyleAndBoxModelMetrics const& layout_node_with_style_and_box_metrics() const { return static_cast<Layout::NodeWithStyleAndBoxModelMetrics const&>(Paintable::layout_node()); }
 
-    auto const& box_model() const { return layout_box().box_model(); }
+    auto const& box_model() const { return layout_node_with_style_and_box_metrics().box_model(); }
 
     struct OverflowData {
         CSSPixelRect scrollable_overflow_rect;
@@ -115,7 +117,12 @@ class PaintableBox : public Paintable
     CSSPixels absolute_y() const { return absolute_rect().y(); }
     CSSPixelPoint absolute_position() const { return absolute_rect().location(); }
 
-    [[nodiscard]] bool has_scrollable_overflow() const { return m_overflow_data->has_scrollable_overflow; }
+    [[nodiscard]] bool has_scrollable_overflow() const
+    {
+        if (!m_overflow_data.has_value())
+            return false;
+        return m_overflow_data->has_scrollable_overflow;
+    }
 
     bool has_css_transform() const { return computed_values().transformations().size() > 0; }
 
@@ -128,8 +135,8 @@ class PaintableBox : public Paintable
 
     void set_overflow_data(OverflowData data) { m_overflow_data = move(data); }
 
-    DOM::Node const* dom_node() const { return layout_box().dom_node(); }
-    DOM::Node* dom_node() { return layout_box().dom_node(); }
+    DOM::Node const* dom_node() const { return layout_node_with_style_and_box_metrics().dom_node(); }
+    DOM::Node* dom_node() { return layout_node_with_style_and_box_metrics().dom_node(); }
 
     virtual void set_needs_display(InvalidateDisplayList = InvalidateDisplayList::Yes) override;
 
@@ -207,7 +214,7 @@ class PaintableBox : public Paintable
 
     Optional<CSSPixelRect> get_clip_rect() const;
 
-    bool is_viewport() const { return layout_box().is_viewport(); }
+    bool is_viewport() const { return layout_node_with_style_and_box_metrics().is_viewport(); }
 
     virtual bool wants_mouse_events() const override;
 
@@ -238,6 +245,7 @@ class PaintableBox : public Paintable
 
 protected:
     explicit PaintableBox(Layout::Box const&);
+    explicit PaintableBox(Layout::InlineNode const&);
 
     virtual void paint_border(PaintContext&) const;
     virtual void paint_backdrop_filter(PaintContext&) const;
@@ -306,10 +314,11 @@ class PaintableWithLines : public PaintableBox {
 
 public:
     static JS::NonnullGCPtr<PaintableWithLines> create(Layout::BlockContainer const&);
+    static JS::NonnullGCPtr<PaintableWithLines> create(Layout::InlineNode const&, size_t line_index);
     virtual ~PaintableWithLines() override;
 
-    Layout::BlockContainer const& layout_box() const;
-    Layout::BlockContainer& layout_box();
+    Layout::NodeWithStyleAndBoxModelMetrics const& layout_node_with_style_and_box_metrics() const;
+    Layout::NodeWithStyleAndBoxModelMetrics& layout_node_with_style_and_box_metrics();
 
     Vector<PaintableFragment> const& fragments() const { return m_fragments; }
     Vector<PaintableFragment>& fragments() { return m_fragments; }
@@ -343,13 +352,18 @@ class PaintableWithLines : public PaintableBox {
 
     virtual void resolve_paint_properties() override;
 
+    size_t line_index() const { return m_line_index; }
+
 protected:
     PaintableWithLines(Layout::BlockContainer const&);
+    PaintableWithLines(Layout::InlineNode const&, size_t line_index);
 
 private:
     [[nodiscard]] virtual bool is_paintable_with_lines() const final { return true; }
 
     Vector<PaintableFragment> m_fragments;
+
+    size_t m_line_index { 0 };
 };
 
 void paint_text_decoration(PaintContext&, TextPaintable const&, PaintableFragment const&);
diff --git a/Userland/Libraries/LibWeb/Painting/ViewportPaintable.cpp b/Userland/Libraries/LibWeb/Painting/ViewportPaintable.cpp
index 69164e55d4ee..34b41d96f5b4 100644
--- a/Userland/Libraries/LibWeb/Painting/ViewportPaintable.cpp
+++ b/Userland/Libraries/LibWeb/Painting/ViewportPaintable.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2023, Andreas Kling <andreas@ladybird.org>
+ * Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -156,15 +157,19 @@ void ViewportPaintable::assign_clip_frames()
     for (auto& it : clip_state) {
         auto const& paintable_box = *it.key;
         auto& clip_frame = *it.value;
-        for (auto const* block = &paintable_box.layout_box(); !block->is_viewport(); block = block->containing_block()) {
-            auto const& block_paintable_box = *block->paintable_box();
+        for (auto const* block = &paintable_box.layout_node_with_style_and_box_metrics(); !block->is_viewport(); block = block->containing_block()) {
+            auto const& paintable = block->first_paintable();
+            if (!paintable->is_paintable_box()) {
+                continue;
+            }
+            auto const& block_paintable_box = static_cast<PaintableBox const&>(*paintable);
             auto block_overflow_x = block_paintable_box.computed_values().overflow_x();
             auto block_overflow_y = block_paintable_box.computed_values().overflow_y();
             if (block_overflow_x != CSS::Overflow::Visible && block_overflow_y != CSS::Overflow::Visible) {
                 auto rect = block_paintable_box.absolute_padding_box_rect();
                 clip_frame.add_clip_rect(rect, block_paintable_box.normalized_border_radii_data(ShrinkRadiiForBorders::Yes), block_paintable_box.enclosing_scroll_frame());
             }
-            if (auto css_clip_property_rect = block->paintable_box()->get_clip_rect(); css_clip_property_rect.has_value()) {
+            if (auto css_clip_property_rect = block_paintable_box.get_clip_rect(); css_clip_property_rect.has_value()) {
                 clip_frame.add_clip_rect(css_clip_property_rect.value(), {}, block_paintable_box.enclosing_scroll_frame());
             }
             if (block->has_css_transform()) {
diff --git a/Userland/Libraries/LibWeb/Painting/ViewportPaintable.h b/Userland/Libraries/LibWeb/Painting/ViewportPaintable.h
index e6f5afa729b1..1d5b6685b4f9 100644
--- a/Userland/Libraries/LibWeb/Painting/ViewportPaintable.h
+++ b/Userland/Libraries/LibWeb/Painting/ViewportPaintable.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2023, Andreas Kling <andreas@ladybird.org>
+ * Copyright (c) 2024, Aliaksandr Kalenik <kalenik.aliaksandr@gmail.com>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */"
a698a58d3cfd284aae65d46cc7b02657e1e51d2c,2020-08-18 15:42:27,Tom,windowserver: Fix flickering,False,Fix flickering,windowserver,"diff --git a/Services/WindowServer/Button.cpp b/Services/WindowServer/Button.cpp
index e87e64a558da..7265494b314c 100644
--- a/Services/WindowServer/Button.cpp
+++ b/Services/WindowServer/Button.cpp
@@ -65,7 +65,7 @@ void Button::on_mouse_event(const MouseEvent& event)
     if (event.type() == Event::MouseDown && event.button() == MouseButton::Left) {
         m_pressed = true;
         wm.set_cursor_tracking_button(this);
-        wm.invalidate(screen_rect());
+        m_frame.invalidate(m_relative_rect);
         return;
     }
 
@@ -85,7 +85,7 @@ void Button::on_mouse_event(const MouseEvent& event)
             // However, we don't know that rect yet. We can make an educated
             // guess which also looks okay even when wrong:
             m_hovered = false;
-            wm.invalidate(screen_rect());
+            m_frame.invalidate(m_relative_rect);
         }
         return;
     }
@@ -95,7 +95,7 @@ void Button::on_mouse_event(const MouseEvent& event)
         m_hovered = rect().contains(event.position());
         wm.set_hovered_button(m_hovered ? this : nullptr);
         if (old_hovered != m_hovered)
-            wm.invalidate(screen_rect());
+            m_frame.invalidate(m_relative_rect);
     }
 
     if (event.type() == Event::MouseMove && event.buttons() & (unsigned)MouseButton::Left) {
@@ -104,7 +104,7 @@ void Button::on_mouse_event(const MouseEvent& event)
         bool old_pressed = m_pressed;
         m_pressed = m_hovered;
         if (old_pressed != m_pressed)
-            wm.invalidate(screen_rect());
+            m_frame.invalidate(m_relative_rect);
     }
 }
 
diff --git a/Services/WindowServer/ClientConnection.cpp b/Services/WindowServer/ClientConnection.cpp
index 154b7e0c3b8a..0af1a8f184fb 100644
--- a/Services/WindowServer/ClientConnection.cpp
+++ b/Services/WindowServer/ClientConnection.cpp
@@ -584,7 +584,7 @@ OwnPtr<Messages::WindowServer::SetWindowBackingStoreResponse> ClientConnection::
     }
 
     if (message.flush_immediately())
-        window.invalidate();
+        window.invalidate(false);
 
     return make<Messages::WindowServer::SetWindowBackingStoreResponse>();
 }
diff --git a/Services/WindowServer/Compositor.cpp b/Services/WindowServer/Compositor.cpp
index 7041007c263b..1d4b095d58df 100644
--- a/Services/WindowServer/Compositor.cpp
+++ b/Services/WindowServer/Compositor.cpp
@@ -32,11 +32,15 @@
 #include ""Window.h""
 #include ""WindowManager.h""
 #include <AK/Memory.h>
+#include <AK/ScopeGuard.h>
 #include <LibCore/Timer.h>
 #include <LibGfx/Font.h>
 #include <LibGfx/Painter.h>
 #include <LibThread/BackgroundAction.h>
 
+//#define COMPOSE_DEBUG
+//#define OCCLUSIONS_DEBUG
+
 namespace WindowServer {
 
 Compositor& Compositor::the()
@@ -96,12 +100,15 @@ void Compositor::init_bitmaps()
     else
         m_back_bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::RGB32, size);
 
+    m_temp_bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::RGB32, size);
+
     m_front_painter = make<Gfx::Painter>(*m_front_bitmap);
     m_back_painter = make<Gfx::Painter>(*m_back_bitmap);
+    m_temp_painter = make<Gfx::Painter>(*m_temp_bitmap);
 
     m_buffers_are_flipped = false;
 
-    invalidate();
+    invalidate_screen();
 }
 
 void Compositor::compose()
@@ -111,26 +118,64 @@ void Compositor::compose()
         m_wallpaper_mode = mode_to_enum(wm.config()->read_entry(""Background"", ""Mode"", ""simple""));
     auto& ws = Screen::the();
 
-    auto dirty_rects = move(m_dirty_rects);
-
-    if (dirty_rects.size() == 0) {
+    if (!m_invalidated_any) {
         // nothing dirtied since the last compose pass.
         return;
     }
 
-    dirty_rects.add(Gfx::IntRect::intersection(m_last_geometry_label_rect, Screen::the().rect()));
-    dirty_rects.add(Gfx::IntRect::intersection(m_last_cursor_rect, Screen::the().rect()));
-    dirty_rects.add(Gfx::IntRect::intersection(m_last_dnd_rect, Screen::the().rect()));
-    dirty_rects.add(Gfx::IntRect::intersection(current_cursor_rect(), Screen::the().rect()));
+    if (m_occlusions_dirty) {
+        m_occlusions_dirty = false;
+        recompute_occlusions();
+    }
+
+    auto dirty_screen_rects = move(m_dirty_screen_rects);
+    dirty_screen_rects.add(m_last_geometry_label_rect.intersected(ws.rect()));
+    dirty_screen_rects.add(m_last_dnd_rect.intersected(ws.rect()));
+    if (m_invalidated_cursor) {
+        if (wm.dnd_client())
+            dirty_screen_rects.add(wm.dnd_rect().intersected(ws.rect()));
+    }
 
-    auto any_dirty_rect_intersects_window = [&dirty_rects](const Window& window) {
-        auto window_frame_rect = window.frame().rect();
-        for (auto& dirty_rect : dirty_rects.rects()) {
-            if (dirty_rect.intersects(window_frame_rect))
-                return true;
+    // Mark window regions as dirty that need to be re-rendered
+    wm.for_each_visible_window_from_back_to_front([&](Window& window) {
+        auto frame_rect = window.frame().rect();
+        for (auto& dirty_rect : dirty_screen_rects.rects()) {
+            auto invalidate_rect = dirty_rect.intersected(frame_rect);
+            if (!invalidate_rect.is_empty()) {
+                auto inner_rect_offset = window.rect().location() - frame_rect.location();
+                invalidate_rect.move_by(-(frame_rect.location() + inner_rect_offset));
+                window.invalidate_no_notify(invalidate_rect);
+                m_invalidated_window = true;
+            }
         }
-        return false;
-    };
+        window.prepare_dirty_rects();
+        return IterationDecision::Continue;
+    });
+
+    // Any windows above or below a given window that need to be re-rendered
+    // also require us to re-render that window's intersecting area, regardless
+    // of whether that window has any dirty rectangles
+    wm.for_each_visible_window_from_back_to_front([&](Window& window) {
+        auto& transparency_rects = window.transparency_rects();
+        if (transparency_rects.is_empty())
+            return IterationDecision::Continue;
+
+        auto frame_rect = window.frame().rect();
+        auto& dirty_rects = window.dirty_rects();
+        wm.for_each_visible_window_from_back_to_front([&](Window& w) {
+            if (&w == &window)
+                return IterationDecision::Continue;
+            auto frame_rect2 = w.frame().rect();
+            if (!frame_rect2.intersects(frame_rect))
+                return IterationDecision::Continue;
+            transparency_rects.for_each_intersected(w.dirty_rects(), [&](const Gfx::IntRect& intersected_dirty) {
+                dirty_rects.add(intersected_dirty);
+                return IterationDecision::Continue;
+            });
+            return IterationDecision::Continue;
+        });
+        return IterationDecision::Continue;
+    });
 
     Color background_color = wm.palette().desktop_background();
     String background_color_entry = wm.config()->read_entry(""Background"", ""Color"", """");
@@ -138,50 +183,127 @@ void Compositor::compose()
         background_color = Color::from_string(background_color_entry).value_or(background_color);
     }
 
-    // Paint the wallpaper.
-    for (auto& dirty_rect : dirty_rects.rects()) {
-        if (any_opaque_window_contains_rect(dirty_rect))
-            continue;
+#ifdef COMPOSE_DEBUG
+    dbg() << ""COMPOSE: invalidated: window:"" << m_invalidated_window << "" cursor:"" << m_invalidated_cursor << "" any: "" << m_invalidated_any;
+    for (auto& r : dirty_screen_rects.rects())
+        dbg() << ""dirty screen: "" << r;
+#endif
+    Gfx::DisjointRectSet flush_rects;
+    Gfx::DisjointRectSet flush_transparent_rects;
+    Gfx::DisjointRectSet flush_special_rects;
+    auto cursor_rect = current_cursor_rect();
+    bool need_to_draw_cursor = false;
+
+    auto check_restore_cursor_back = [&](const Gfx::IntRect& rect) {
+        if (!need_to_draw_cursor && rect.intersects(cursor_rect)) {
+            // Restore what's behind the cursor if anything touches the area of the cursor
+            need_to_draw_cursor = true;
+            restore_cursor_back();
+        }
+    };
+
+    auto prepare_rect = [&](const Gfx::IntRect& rect) {
+#ifdef COMPOSE_DEBUG
+        dbg() << ""    -> flush opaque: "" << rect;
+#endif
+        ASSERT(!flush_rects.intersects(rect));
+        ASSERT(!flush_transparent_rects.intersects(rect));
+        flush_rects.add(rect);
+        check_restore_cursor_back(rect);
+    };
+
+    auto prepare_transparency_rect = [&](const Gfx::IntRect& rect) {
+        // This function may be called multiple times with the same
+        // rect as we walk the window stack from back to front. However,
+        // there should be no overlaps with flush_rects
+#ifdef COMPOSE_DEBUG
+        dbg() << ""   -> flush transparent: "" << rect;
+#endif
+        ASSERT(!flush_rects.intersects(rect));
+        bool have_rect = false;
+        for (auto& r : flush_transparent_rects.rects()) {
+            if (r == rect) {
+                have_rect = true;
+                break;
+            }
+        }
+        
+        if (!have_rect) {
+            flush_transparent_rects.add(rect);
+            check_restore_cursor_back(rect);
+        }
+    };
+
+    if (!m_cursor_back_bitmap || m_invalidated_cursor)
+        check_restore_cursor_back(cursor_rect);
+
+    auto back_painter = *m_back_painter;
+    auto temp_painter = *m_temp_painter;
+
+    auto paint_wallpaper = [&](Gfx::Painter& painter, const Gfx::IntRect& rect) {
         // FIXME: If the wallpaper is opaque, no need to fill with color!
-        m_back_painter->fill_rect(dirty_rect, background_color);
+        painter.fill_rect(rect, background_color);
         if (m_wallpaper) {
             if (m_wallpaper_mode == WallpaperMode::Simple) {
-                m_back_painter->blit(dirty_rect.location(), *m_wallpaper, dirty_rect);
+                painter.blit(rect.location(), *m_wallpaper, rect);
             } else if (m_wallpaper_mode == WallpaperMode::Center) {
                 Gfx::IntPoint offset { ws.size().width() / 2 - m_wallpaper->size().width() / 2,
                     ws.size().height() / 2 - m_wallpaper->size().height() / 2 };
-                m_back_painter->blit_offset(dirty_rect.location(), *m_wallpaper,
-                    dirty_rect, offset);
+                painter.blit_offset(rect.location(), *m_wallpaper,
+                    rect, offset);
             } else if (m_wallpaper_mode == WallpaperMode::Tile) {
-                m_back_painter->draw_tiled_bitmap(dirty_rect, *m_wallpaper);
+                painter.draw_tiled_bitmap(rect, *m_wallpaper);
             } else if (m_wallpaper_mode == WallpaperMode::Scaled) {
                 float hscale = (float)m_wallpaper->size().width() / (float)ws.size().width();
                 float vscale = (float)m_wallpaper->size().height() / (float)ws.size().height();
 
-                m_back_painter->blit_scaled(dirty_rect, *m_wallpaper, dirty_rect, hscale, vscale);
+                // TODO: this may look ugly, we should scale to a backing bitmap and then blit
+                painter.blit_scaled(rect, *m_wallpaper, rect, hscale, vscale);
             } else {
                 ASSERT_NOT_REACHED();
             }
         }
-    }
+    };
+
+    m_opaque_wallpaper_rects.for_each_intersected(dirty_screen_rects, [&](const Gfx::IntRect& render_rect) {
+#ifdef COMPOSE_DEBUG
+        dbg() << ""  render wallpaper opaque: "" << render_rect;
+#endif
+        prepare_rect(render_rect);
+        paint_wallpaper(back_painter, render_rect);
+        return IterationDecision::Continue;
+    });
 
     auto compose_window = [&](Window& window) -> IterationDecision {
-        if (!any_dirty_rect_intersects_window(window))
+        auto frame_rect = window.frame().rect();
+        if (!frame_rect.intersects(ws.rect()))
             return IterationDecision::Continue;
-        Gfx::PainterStateSaver saver(*m_back_painter);
-        m_back_painter->add_clip_rect(window.frame().rect());
+        auto frame_rects = frame_rect.shatter(window.rect());
+
+#ifdef COMPOSE_DEBUG
+        dbg() << ""  window "" << window.title() << "" frame rect: "" << frame_rect;
+#endif
+
         RefPtr<Gfx::Bitmap> backing_store = window.backing_store();
-        for (auto& dirty_rect : dirty_rects.rects()) {
-            if (!window.is_fullscreen() && any_opaque_window_above_this_one_contains_rect(window, dirty_rect))
-                continue;
-            Gfx::PainterStateSaver saver(*m_back_painter);
-            m_back_painter->add_clip_rect(dirty_rect);
-            if (!backing_store)
-                m_back_painter->fill_rect(dirty_rect, wm.palette().window());
-            if (!window.is_fullscreen())
-                window.frame().paint(*m_back_painter);
-            if (!backing_store)
-                continue;
+        auto compose_window_rect = [&](Gfx::Painter& painter, const Gfx::IntRect& rect) {
+            if (!window.is_fullscreen()) {
+                rect.for_each_intersected(frame_rects, [&](const Gfx::IntRect& intersected_rect) {
+                    // TODO: Should optimize this to use a backing buffer
+                    Gfx::PainterStateSaver saver(painter);
+                    painter.add_clip_rect(intersected_rect);
+#ifdef COMPOSE_DEBUG
+                    dbg() << ""    render frame: "" << intersected_rect;
+#endif                    
+                    window.frame().paint(painter);
+                    return IterationDecision::Continue;
+                });
+            }
+
+            if (!backing_store) {
+                if (window.is_opaque())
+                    painter.fill_rect(window.rect().intersected(rect), wm.palette().window());
+                return;
+            }
 
             // Decide where we would paint this window's backing store.
             // This is subtly different from widow.rect(), because window
@@ -216,54 +338,178 @@ void Compositor::compose()
                 break;
             }
 
-            Gfx::IntRect dirty_rect_in_backing_coordinates = dirty_rect
-                                                                 .intersected(window.rect())
+            Gfx::IntRect dirty_rect_in_backing_coordinates = rect.intersected(window.rect())
                                                                  .intersected(backing_rect)
                                                                  .translated(-backing_rect.location());
 
             if (dirty_rect_in_backing_coordinates.is_empty())
-                continue;
+                return;
             auto dst = backing_rect.location().translated(dirty_rect_in_backing_coordinates.location());
 
             if (window.client() && window.client()->is_unresponsive()) {
-                m_back_painter->blit_filtered(dst, *backing_store, dirty_rect_in_backing_coordinates, [](Color src) {
+                painter.blit_filtered(dst, *backing_store, dirty_rect_in_backing_coordinates, [](Color src) {
                     return src.to_grayscale().darkened(0.75f);
                 });
             } else {
-                m_back_painter->blit(dst, *backing_store, dirty_rect_in_backing_coordinates, window.opacity());
+                painter.blit(dst, *backing_store, dirty_rect_in_backing_coordinates, window.opacity());
             }
 
             for (auto background_rect : window.rect().shatter(backing_rect))
-                m_back_painter->fill_rect(background_rect, wm.palette().window());
+                painter.fill_rect(background_rect, wm.palette().window());
+        };
+
+        auto& dirty_rects = window.dirty_rects();
+#ifdef COMPOSE_DEBUG
+        for (auto& dirty_rect : dirty_rects.rects())
+            dbg() << ""    dirty: "" << dirty_rect;
+        for (auto& r : window.opaque_rects().rects())
+            dbg() << ""    opaque: "" << r;
+        for (auto& r : window.transparency_rects().rects())
+            dbg() << ""    transparent: "" << r;
+#endif
+
+        // Render opaque portions directly to the back buffer
+        auto& opaque_rects = window.opaque_rects();
+        if (!opaque_rects.is_empty()) {
+            opaque_rects.for_each_intersected(dirty_rects, [&](const Gfx::IntRect& render_rect) {
+#ifdef COMPOSE_DEBUG
+                dbg() << ""    render opaque: "" << render_rect;
+#endif
+                prepare_rect(render_rect);
+                Gfx::PainterStateSaver saver(back_painter);
+                back_painter.add_clip_rect(render_rect);
+                compose_window_rect(back_painter, render_rect);
+                return IterationDecision::Continue;
+            });
+        }
+
+        // Render the wallpaper for any transparency directly covering
+        // the wallpaper
+        auto& transparency_wallpaper_rects = window.transparency_wallpaper_rects();
+        if (!transparency_wallpaper_rects.is_empty()) {
+            transparency_wallpaper_rects.for_each_intersected(dirty_rects, [&](const Gfx::IntRect& render_rect) {
+#ifdef COMPOSE_DEBUG
+                dbg() << ""    render wallpaper: "" << render_rect;
+#endif
+                prepare_transparency_rect(render_rect);
+                paint_wallpaper(temp_painter, render_rect);
+                return IterationDecision::Continue;
+            });
+        }
+        auto& transparency_rects = window.transparency_rects();
+        if (!transparency_rects.is_empty()) {
+            transparency_rects.for_each_intersected(dirty_rects, [&](const Gfx::IntRect& render_rect) {
+#ifdef COMPOSE_DEBUG
+                dbg() << ""    render transparent: "" << render_rect;
+#endif
+                prepare_transparency_rect(render_rect);
+                Gfx::PainterStateSaver saver(temp_painter);
+                temp_painter.add_clip_rect(render_rect);
+                compose_window_rect(temp_painter, render_rect);
+                return IterationDecision::Continue;
+            });
         }
         return IterationDecision::Continue;
     };
 
     // Paint the window stack.
-    if (auto* fullscreen_window = wm.active_fullscreen_window()) {
-        compose_window(*fullscreen_window);
-    } else {
-        wm.for_each_visible_window_from_back_to_front([&](Window& window) {
-            return compose_window(window);
-        });
+    if (m_invalidated_window) {
+        if (auto* fullscreen_window = wm.active_fullscreen_window()) {
+            compose_window(*fullscreen_window);
+        } else {
+            wm.for_each_visible_window_from_back_to_front([&](Window& window) {
+                compose_window(window);
+                window.clear_dirty_rects();
+                return IterationDecision::Continue;
+            });
+        }
+
+        // Check that there are no overlapping transparent and opaque flush rectangles
+        ASSERT(![&]() {
+            for (auto& rect_transparent : flush_transparent_rects.rects()) {
+                for (auto& rect_opaque : flush_rects.rects()) {
+                    if (rect_opaque.intersects(rect_transparent)) {
+                        dbg() << ""Transparent rect "" << rect_transparent << "" overlaps opaque rect: "" << rect_opaque << "": "" << rect_opaque.intersected(rect_transparent);
+                        return true;
+                    }
+                }
+            }
+            return false;
+        }());
+
+        // Copy anything rendered to the temporary buffer to the back buffer
+        for (auto& rect : flush_transparent_rects.rects())
+            back_painter.blit(rect.location(), *m_temp_bitmap, rect);
+
+        Gfx::IntRect geometry_label_rect;
+        if (draw_geometry_label(geometry_label_rect))
+            flush_special_rects.add(geometry_label_rect);
+    }
+
+    m_invalidated_any = false;
+    m_invalidated_window = false;
+    m_invalidated_cursor = false;
+
+    if (wm.dnd_client()) {
+        auto dnd_rect = wm.dnd_rect();
 
-        draw_geometry_label();
+        // TODO: render once into a backing bitmap, then just blit...
+        auto render_dnd = [&]() {
+            back_painter.fill_rect(dnd_rect, wm.palette().selection().with_alpha(200));
+            if (!wm.dnd_text().is_empty()) {
+                auto text_rect = dnd_rect;
+                if (wm.dnd_bitmap())
+                    text_rect.move_by(wm.dnd_bitmap()->width(), 0);
+                back_painter.draw_text(text_rect, wm.dnd_text(), Gfx::TextAlignment::CenterLeft, wm.palette().selection_text());
+            }
+            if (wm.dnd_bitmap()) {
+                back_painter.blit(dnd_rect.top_left(), *wm.dnd_bitmap(), wm.dnd_bitmap()->rect());
+            }
+        };
+        
+        dirty_screen_rects.for_each_intersected(dnd_rect, [&](const Gfx::IntRect& render_rect) {
+            Gfx::PainterStateSaver saver(back_painter);
+            back_painter.add_clip_rect(render_rect);
+            render_dnd();
+            return IterationDecision::Continue;
+        });
+        flush_transparent_rects.for_each_intersected(dnd_rect, [&](const Gfx::IntRect& render_rect) {
+            Gfx::PainterStateSaver saver(back_painter);
+            back_painter.add_clip_rect(render_rect);
+            render_dnd();
+            return IterationDecision::Continue;
+        });
+        m_last_dnd_rect = dnd_rect;
+    } else {
+        if (!m_last_dnd_rect.is_empty()) {
+            invalidate_screen(m_last_dnd_rect);
+            m_last_dnd_rect = {};
+        }
     }
 
-    run_animations();
+    run_animations(flush_special_rects);
 
-    draw_cursor();
+    if (need_to_draw_cursor) {
+        flush_rects.add(cursor_rect);
+        if (cursor_rect != m_last_cursor_rect)
+            flush_rects.add(m_last_cursor_rect);
+        draw_cursor(cursor_rect);
+    }
 
     if (m_flash_flush) {
-        for (auto& rect : dirty_rects.rects())
+        for (auto& rect : flush_rects.rects())
             m_front_painter->fill_rect(rect, Color::Yellow);
     }
 
     if (m_screen_can_set_buffer)
         flip_buffers();
 
-    for (auto& r : dirty_rects.rects())
-        flush(r);
+    for (auto& rect : flush_rects.rects())
+        flush(rect);
+    for (auto& rect : flush_transparent_rects.rects())
+        flush(rect);
+    for (auto& rect : flush_special_rects.rects())
+        flush(rect);
 }
 
 void Compositor::flush(const Gfx::IntRect& a_rect)
@@ -301,20 +547,35 @@ void Compositor::flush(const Gfx::IntRect& a_rect)
     }
 }
 
-void Compositor::invalidate()
+void Compositor::invalidate_screen()
 {
-    m_dirty_rects.clear_with_capacity();
-    invalidate(Screen::the().rect());
+    invalidate_screen(Screen::the().rect());
 }
 
-void Compositor::invalidate(const Gfx::IntRect& a_rect)
+void Compositor::invalidate_screen(const Gfx::IntRect& screen_rect)
 {
-    auto rect = Gfx::IntRect::intersection(a_rect, Screen::the().rect());
-    if (rect.is_empty())
+    m_dirty_screen_rects.add(screen_rect.intersected(Screen::the().rect()));
+    
+    if (m_invalidated_any)
+        return;
+
+    m_invalidated_any = true;
+    m_invalidated_window = true;
+    start_compose_async_timer();
+}
+
+void Compositor::invalidate_window()
+{
+    if (m_invalidated_window)
         return;
+    m_invalidated_window = true;
+    m_invalidated_any = true;
 
-    m_dirty_rects.add(rect);
+    start_compose_async_timer();
+}
 
+void Compositor::start_compose_async_timer()
+{
     // We delay composition by a timer interval, but to not affect latency too
     // much, if a pending compose is not already scheduled, we also schedule an
     // immediate compose the next spin of the event loop.
@@ -331,7 +592,7 @@ bool Compositor::set_background_color(const String& background_color)
     bool ret_val = wm.config()->sync();
 
     if (ret_val)
-        Compositor::invalidate();
+        Compositor::invalidate_screen();
 
     return ret_val;
 }
@@ -344,7 +605,7 @@ bool Compositor::set_wallpaper_mode(const String& mode)
 
     if (ret_val) {
         m_wallpaper_mode = mode_to_enum(mode);
-        Compositor::invalidate();
+        Compositor::invalidate_screen();
     }
 
     return ret_val;
@@ -360,7 +621,7 @@ bool Compositor::set_wallpaper(const String& path, Function<void(bool)>&& callba
         [this, path, callback = move(callback)](RefPtr<Gfx::Bitmap> bitmap) {
             m_wallpaper_path = path;
             m_wallpaper = move(bitmap);
-            invalidate();
+            invalidate_screen();
             callback(true);
         });
     return true;
@@ -375,7 +636,7 @@ void Compositor::flip_buffers()
     m_buffers_are_flipped = !m_buffers_are_flipped;
 }
 
-void Compositor::run_animations()
+void Compositor::run_animations(Gfx::DisjointRectSet& flush_rects)
 {
     static const int minimize_animation_steps = 10;
 
@@ -403,12 +664,12 @@ void Compositor::run_animations()
 #endif
 
             m_back_painter->draw_rect(rect, Color::White);
+            flush_rects.add(rect);
+            invalidate_screen(rect);
 
             window.step_minimize_animation();
             if (window.minimize_animation_index() >= minimize_animation_steps)
                 window.end_minimize_animation();
-
-            invalidate(rect);
         }
         return IterationDecision::Continue;
     });
@@ -427,6 +688,7 @@ bool Compositor::set_resolution(int desired_width, int desired_height)
     }
     bool success = Screen::the().set_resolution(desired_width, desired_height);
     init_bitmaps();
+    invalidate_occlusions();
     compose();
     return success;
 }
@@ -439,19 +701,21 @@ Gfx::IntRect Compositor::current_cursor_rect() const
 
 void Compositor::invalidate_cursor()
 {
-    auto& wm = WindowManager::the();
-    if (wm.dnd_client())
-        invalidate(wm.dnd_rect());
-    invalidate(current_cursor_rect());
+    if (m_invalidated_cursor)
+        return;
+    m_invalidated_cursor = true;
+    m_invalidated_any = true;
+
+    start_compose_async_timer();
 }
 
-void Compositor::draw_geometry_label()
+bool Compositor::draw_geometry_label(Gfx::IntRect& geometry_label_rect)
 {
     auto& wm = WindowManager::the();
     auto* window_being_moved_or_resized = wm.m_move_window ? wm.m_move_window.ptr() : (wm.m_resize_window ? wm.m_resize_window.ptr() : nullptr);
     if (!window_being_moved_or_resized) {
         m_last_geometry_label_rect = {};
-        return;
+        return false;
     }
     auto geometry_string = window_being_moved_or_resized->rect().to_string();
     if (!window_being_moved_or_resized->size_increment().is_null()) {
@@ -459,39 +723,40 @@ void Compositor::draw_geometry_label()
         int height_steps = (window_being_moved_or_resized->height() - window_being_moved_or_resized->base_size().height()) / window_being_moved_or_resized->size_increment().height();
         geometry_string = String::format(""%s (%dx%d)"", geometry_string.characters(), width_steps, height_steps);
     }
-    auto geometry_label_rect = Gfx::IntRect { 0, 0, wm.font().width(geometry_string) + 16, wm.font().glyph_height() + 10 };
+    geometry_label_rect = Gfx::IntRect { 0, 0, wm.font().width(geometry_string) + 16, wm.font().glyph_height() + 10 };
     geometry_label_rect.center_within(window_being_moved_or_resized->rect());
-    m_back_painter->fill_rect(geometry_label_rect, wm.palette().window());
-    m_back_painter->draw_rect(geometry_label_rect, wm.palette().threed_shadow2());
-    m_back_painter->draw_text(geometry_label_rect, geometry_string, Gfx::TextAlignment::Center, wm.palette().window_text());
+    auto& back_painter = *m_back_painter;
+    back_painter.fill_rect(geometry_label_rect, wm.palette().window());
+    back_painter.draw_rect(geometry_label_rect, wm.palette().threed_shadow2());
+    back_painter.draw_text(geometry_label_rect, geometry_string, Gfx::TextAlignment::Center, wm.palette().window_text());
     m_last_geometry_label_rect = geometry_label_rect;
+    return true;
 }
 
-void Compositor::draw_cursor()
+void Compositor::draw_cursor(const Gfx::IntRect& cursor_rect)
 {
     auto& wm = WindowManager::the();
-    Gfx::IntRect cursor_rect = current_cursor_rect();
-    m_back_painter->blit(cursor_rect.location(), wm.active_cursor().bitmap(), wm.active_cursor().rect());
-
-    if (wm.dnd_client()) {
-        auto dnd_rect = wm.dnd_rect();
-        m_back_painter->fill_rect(dnd_rect, wm.palette().selection().with_alpha(200));
-        if (!wm.dnd_text().is_empty()) {
-            auto text_rect = dnd_rect;
-            if (wm.dnd_bitmap())
-                text_rect.move_by(wm.dnd_bitmap()->width(), 0);
-            m_back_painter->draw_text(text_rect, wm.dnd_text(), Gfx::TextAlignment::CenterLeft, wm.palette().selection_text());
-        }
-        if (wm.dnd_bitmap()) {
-            m_back_painter->blit(dnd_rect.top_left(), *wm.dnd_bitmap(), wm.dnd_bitmap()->rect());
-        }
-        m_last_dnd_rect = dnd_rect;
-    } else {
-        m_last_dnd_rect = {};
+    
+    if (!m_cursor_back_bitmap || m_cursor_back_bitmap->size() != cursor_rect.size()) {
+        m_cursor_back_bitmap = Gfx::Bitmap::create(Gfx::BitmapFormat::RGB32, cursor_rect.size());
+        m_cursor_back_painter = make<Gfx::Painter>(*m_cursor_back_bitmap);
     }
+
+    m_cursor_back_painter->blit({0, 0}, *m_back_bitmap, wm.active_cursor().rect().translated(cursor_rect.location()).intersected(Screen::the().rect()));
+    auto& back_painter = *m_back_painter;
+    back_painter.blit(cursor_rect.location(), wm.active_cursor().bitmap(), wm.active_cursor().rect());
+
     m_last_cursor_rect = cursor_rect;
 }
 
+void Compositor::restore_cursor_back()
+{
+    if (!m_cursor_back_bitmap)
+        return;
+
+    m_back_painter->blit(m_last_cursor_rect.location().constrained(Screen::the().rect()), *m_cursor_back_bitmap, { { 0, 0 }, m_last_cursor_rect.intersected(Screen::the().rect()).size() });
+}
+
 void Compositor::notify_display_links()
 {
     ClientConnection::for_each_client([](auto& client) {
@@ -514,28 +779,6 @@ void Compositor::decrement_display_link_count(Badge<ClientConnection>)
         m_display_link_notify_timer->stop();
 }
 
-bool Compositor::any_opaque_window_contains_rect(const Gfx::IntRect& rect)
-{
-    bool found_containing_window = false;
-    WindowManager::the().for_each_visible_window_from_back_to_front([&](Window& window) {
-        if (window.is_minimized())
-            return IterationDecision::Continue;
-        if (window.opacity() < 1.0f)
-            return IterationDecision::Continue;
-        if (window.has_alpha_channel()) {
-            // FIXME: Just because the window has an alpha channel doesn't mean it's not opaque.
-            //        Maybe there's some way we could know this?
-            return IterationDecision::Continue;
-        }
-        if (window.frame().rect().contains(rect)) {
-            found_containing_window = true;
-            return IterationDecision::Break;
-        }
-        return IterationDecision::Continue;
-    });
-    return found_containing_window;
-};
-
 bool Compositor::any_opaque_window_above_this_one_contains_rect(const Window& a_window, const Gfx::IntRect& rect)
 {
     bool found_containing_window = false;
@@ -551,9 +794,7 @@ bool Compositor::any_opaque_window_above_this_one_contains_rect(const Window& a_
             return IterationDecision::Continue;
         if (window.is_minimized())
             return IterationDecision::Continue;
-        if (window.opacity() < 1.0f)
-            return IterationDecision::Continue;
-        if (window.has_alpha_channel())
+        if (!window.is_opaque())
             return IterationDecision::Continue;
         if (window.frame().rect().contains(rect)) {
             found_containing_window = true;
@@ -578,6 +819,169 @@ void Compositor::recompute_occlusions()
         }
         return IterationDecision::Continue;
     });
+
+#ifdef OCCLUSIONS_DEBUG
+    dbg() << ""OCCLUSIONS:"";
+#endif
+
+    auto screen_rect = Screen::the().rect();
+
+    if (auto* fullscreen_window = wm.active_fullscreen_window()) {
+        WindowManager::the().for_each_visible_window_from_front_to_back([&](Window& w) {
+            auto& visible_opaque = w.opaque_rects();
+            auto& transparency_rects = w.transparency_rects();
+            auto& transparency_wallpaper_rects = w.transparency_wallpaper_rects();
+            if (&w == fullscreen_window) {
+                if (w.is_opaque()) {
+                    visible_opaque = screen_rect;
+                    transparency_rects.clear();
+                    transparency_wallpaper_rects.clear();
+                } else {
+                    visible_opaque.clear();
+                    transparency_rects = screen_rect;
+                    transparency_wallpaper_rects = screen_rect;
+                }
+            } else {
+                visible_opaque.clear();
+                transparency_rects.clear();
+                transparency_wallpaper_rects.clear();
+            }
+            return IterationDecision::Continue;
+        });
+
+        m_opaque_wallpaper_rects.clear();
+    } else {
+        Gfx::DisjointRectSet visible_rects(screen_rect);
+        bool have_transparent = false;
+        WindowManager::the().for_each_visible_window_from_front_to_back([&](Window& w) {
+            auto window_frame_rect = w.frame().rect().intersected(screen_rect);
+            w.transparency_wallpaper_rects().clear();
+            auto& visible_opaque = w.opaque_rects();
+            auto& transparency_rects = w.transparency_rects();
+            if (w.is_minimized() || window_frame_rect.is_empty()) {
+                visible_opaque.clear();
+                transparency_rects.clear();
+                return IterationDecision::Continue;
+            }
+
+            Gfx::DisjointRectSet opaque_covering;
+            if (w.is_opaque()) {
+                visible_opaque = visible_rects.intersected(window_frame_rect);
+                transparency_rects.clear();
+            } else {
+                visible_opaque.clear();
+                transparency_rects = visible_rects.intersected(window_frame_rect);
+            }
+
+            bool found_this_window = false;
+            WindowManager::the().for_each_visible_window_from_back_to_front([&](Window& w2) {
+                if (!found_this_window) {
+                    if (&w == &w2)
+                        found_this_window = true;
+                    return IterationDecision::Continue;
+                }
+
+                if (w2.is_minimized())
+                    return IterationDecision::Continue;
+                auto window_frame_rect2 = w2.frame().rect().intersected(screen_rect);
+                auto covering_rect = window_frame_rect2.intersected(window_frame_rect);
+                if (covering_rect.is_empty())
+                    return IterationDecision::Continue;
+
+                if (w2.is_opaque()) {
+                    opaque_covering.add(covering_rect);
+                    if (opaque_covering.contains(window_frame_rect)) {
+                        // This window is entirely covered by another opaque window
+                        visible_opaque.clear();
+                        transparency_rects.clear();
+                        return IterationDecision::Break;
+                    }
+
+                    if (!visible_opaque.is_empty()) {
+                        auto uncovered_opaque = visible_opaque.shatter(covering_rect);
+                        visible_opaque = move(uncovered_opaque);
+                    }
+
+                    if (!transparency_rects.is_empty()) {
+                        auto uncovered_transparency = transparency_rects.shatter(covering_rect);
+                        transparency_rects = move(uncovered_transparency);
+                    }
+                } else {
+                    visible_rects.for_each_intersected(covering_rect, [&](const Gfx::IntRect& intersected) {
+                        transparency_rects.add(intersected);
+                        if (!visible_opaque.is_empty()) {
+                            auto uncovered_opaque = visible_opaque.shatter(intersected);
+                            visible_opaque = move(uncovered_opaque);
+                        }
+                        return IterationDecision::Continue;
+                    });
+                }
+
+                return IterationDecision::Continue;
+            });
+
+            if (!transparency_rects.is_empty())
+                have_transparent = true;
+
+            ASSERT(!visible_opaque.intersects(transparency_rects));
+
+            if (w.is_opaque()) {
+                // Determine visible area for the window below
+                auto visible_rects_below_window = visible_rects.shatter(window_frame_rect);
+                visible_rects = move(visible_rects_below_window);
+            }
+            return IterationDecision::Continue;
+        });
+
+        if (have_transparent) {
+            // Determine what transparent window areas need to render the wallpaper first
+            WindowManager::the().for_each_visible_window_from_back_to_front([&](Window& w) {
+                auto& transparency_wallpaper_rects = w.transparency_wallpaper_rects();
+                if (w.is_opaque() || w.is_minimized()) {
+                    transparency_wallpaper_rects.clear();
+                    return IterationDecision::Continue;
+                }
+                Gfx::DisjointRectSet& transparency_rects = w.transparency_rects();
+                if (transparency_rects.is_empty()) {
+                    transparency_wallpaper_rects.clear();
+                    return IterationDecision::Continue;
+                }
+                    
+                transparency_wallpaper_rects = visible_rects.intersected(transparency_rects);
+
+                auto remaining_visible = visible_rects.shatter(transparency_wallpaper_rects);
+                visible_rects = move(remaining_visible);
+                return IterationDecision::Continue;
+            });
+        }
+
+        m_opaque_wallpaper_rects = move(visible_rects);
+    }
+
+#ifdef OCCLUSIONS_DEBUG
+    for (auto& r : m_opaque_wallpaper_rects.rects())
+       dbg() << ""  wallpaper opaque: "" << r;
+#endif
+
+    wm.for_each_visible_window_from_back_to_front([&](Window& w) {
+        auto window_frame_rect = w.frame().rect().intersected(screen_rect);
+        if (w.is_minimized() || window_frame_rect.is_empty())
+            return IterationDecision::Continue;
+
+#ifdef OCCLUSIONS_DEBUG
+        dbg() << ""  Window "" << w.title() << "" frame rect: "" << window_frame_rect;
+        for (auto& r : w.opaque_rects().rects())
+            dbg() << ""    opaque: "" << r;
+        for (auto& r : w.transparency_wallpaper_rects().rects())
+            dbg() << ""    transparent wallpaper: "" << r;
+        for (auto& r : w.transparency_rects().rects())
+            dbg() << ""    transparent: "" << r;
+#endif
+        ASSERT(!w.opaque_rects().intersects(m_opaque_wallpaper_rects));
+        ASSERT(!w.transparency_rects().intersects(m_opaque_wallpaper_rects));
+        ASSERT(!w.transparency_wallpaper_rects().intersects(m_opaque_wallpaper_rects));
+        return IterationDecision::Continue;
+    });
 }
 
 }
diff --git a/Services/WindowServer/Compositor.h b/Services/WindowServer/Compositor.h
index 50a06ff8b4f0..f5a41dcbd2c7 100644
--- a/Services/WindowServer/Compositor.h
+++ b/Services/WindowServer/Compositor.h
@@ -52,8 +52,9 @@ class Compositor final : public Core::Object {
     static Compositor& the();
 
     void compose();
-    void invalidate();
-    void invalidate(const Gfx::IntRect&);
+    void invalidate_window();
+    void invalidate_screen();
+    void invalidate_screen(const Gfx::IntRect&);
 
     bool set_resolution(int desired_width, int desired_height);
 
@@ -70,34 +71,45 @@ class Compositor final : public Core::Object {
     void increment_display_link_count(Badge<ClientConnection>);
     void decrement_display_link_count(Badge<ClientConnection>);
 
-    void recompute_occlusions();
+    void invalidate_occlusions() { m_occlusions_dirty = true; }
 
 private:
     Compositor();
     void init_bitmaps();
     void flip_buffers();
     void flush(const Gfx::IntRect&);
-    void draw_cursor();
-    void draw_geometry_label();
     void draw_menubar();
-    void run_animations();
+    void run_animations(Gfx::DisjointRectSet&);
     void notify_display_links();
-    bool any_opaque_window_contains_rect(const Gfx::IntRect&);
+    void start_compose_async_timer();
+    void recompute_occlusions();
     bool any_opaque_window_above_this_one_contains_rect(const Window&, const Gfx::IntRect&);
+    void draw_cursor(const Gfx::IntRect&);
+    void restore_cursor_back();
+    bool draw_geometry_label(Gfx::IntRect&);
 
     RefPtr<Core::Timer> m_compose_timer;
     RefPtr<Core::Timer> m_immediate_compose_timer;
     bool m_flash_flush { false };
     bool m_buffers_are_flipped { false };
     bool m_screen_can_set_buffer { false };
+    bool m_occlusions_dirty { true };
+    bool m_invalidated_any { true };
+    bool m_invalidated_window { false };
+    bool m_invalidated_cursor { false };
 
     RefPtr<Gfx::Bitmap> m_front_bitmap;
     RefPtr<Gfx::Bitmap> m_back_bitmap;
+    RefPtr<Gfx::Bitmap> m_temp_bitmap;
     OwnPtr<Gfx::Painter> m_back_painter;
     OwnPtr<Gfx::Painter> m_front_painter;
+    OwnPtr<Gfx::Painter> m_temp_painter;
 
-    Gfx::DisjointRectSet m_dirty_rects;
+    Gfx::DisjointRectSet m_dirty_screen_rects;
+    Gfx::DisjointRectSet m_opaque_wallpaper_rects;
 
+    RefPtr<Gfx::Bitmap> m_cursor_back_bitmap;
+    OwnPtr<Gfx::Painter> m_cursor_back_painter;
     Gfx::IntRect m_last_cursor_rect;
     Gfx::IntRect m_last_dnd_rect;
     Gfx::IntRect m_last_geometry_label_rect;
diff --git a/Services/WindowServer/Window.cpp b/Services/WindowServer/Window.cpp
index fdeb542e429a..8617af6b4184 100644
--- a/Services/WindowServer/Window.cpp
+++ b/Services/WindowServer/Window.cpp
@@ -129,7 +129,7 @@ Window::~Window()
 void Window::destroy()
 {
     m_destroyed = true;
-    invalidate();
+    set_visible(false);
 }
 
 void Window::set_title(const String& title)
@@ -137,21 +137,23 @@ void Window::set_title(const String& title)
     if (m_title == title)
         return;
     m_title = title;
+    frame().invalidate_title_bar();
     WindowManager::the().notify_title_changed(*this);
 }
 
 void Window::set_rect(const Gfx::IntRect& rect)
 {
     ASSERT(!rect.is_empty());
-    Gfx::IntRect old_rect;
     if (m_rect == rect)
         return;
-    old_rect = m_rect;
+    auto old_rect = m_rect;
     m_rect = rect;
     if (!m_client && (!m_backing_store || old_rect.size() != rect.size())) {
         m_backing_store = Gfx::Bitmap::create(Gfx::BitmapFormat::RGB32, m_rect.size());
     }
-    m_frame.notify_window_rect_changed(old_rect, rect);
+
+    invalidate(true);
+    m_frame.notify_window_rect_changed(old_rect, rect); // recomputes occlusions
 }
 
 void Window::set_rect_without_repaint(const Gfx::IntRect& rect)
@@ -170,7 +172,8 @@ void Window::set_rect_without_repaint(const Gfx::IntRect& rect)
         }
     }
 
-    m_frame.notify_window_rect_changed(old_rect, rect);
+    invalidate(true);
+    m_frame.notify_window_rect_changed(old_rect, rect); // recomputes occlusions
 }
 
 void Window::handle_mouse_event(const MouseEvent& event)
@@ -222,11 +225,12 @@ void Window::set_minimized(bool minimized)
         return;
     m_minimized = minimized;
     update_menu_item_text(PopupMenuItem::Minimize);
+    Compositor::the().invalidate_occlusions();
+    Compositor::the().invalidate_screen(frame().rect());
     if (!is_blocked_by_modal_window())
         start_minimize_animation();
     if (!minimized)
         request_update({ {}, size() });
-    invalidate();
     WindowManager::the().notify_minimization_state_changed(*this);
 }
 
@@ -243,7 +247,11 @@ void Window::set_opacity(float opacity)
 {
     if (m_opacity == opacity)
         return;
+    bool was_opaque = is_opaque();
     m_opacity = opacity;
+    if (was_opaque != is_opaque())
+        Compositor::the().invalidate_occlusions();
+    Compositor::the().invalidate_screen(frame().rect());
     WindowManager::the().notify_opacity_changed(*this);
 }
 
@@ -359,12 +367,21 @@ void Window::set_visible(bool b)
     if (m_visible == b)
         return;
     m_visible = b;
-    invalidate();
+
+    Compositor::the().invalidate_occlusions();
+    if (m_visible)
+         invalidate(true);
+    else
+         Compositor::the().invalidate_screen(frame().rect());
 }
 
-void Window::invalidate()
+void Window::invalidate(bool invalidate_frame)
 {
-    Compositor::the().invalidate(frame().rect());
+    m_invalidated = true;
+    m_invalidated_all = true;
+    m_invalidated_frame |= invalidate_frame;
+    m_dirty_rects.clear();
+    Compositor::the().invalidate_window();
 }
 
 void Window::invalidate(const Gfx::IntRect& rect)
@@ -374,16 +391,46 @@ void Window::invalidate(const Gfx::IntRect& rect)
         return;
     }
 
-    if (rect.is_empty()) {
-        invalidate();
-        return;
-    }
+    if (invalidate_no_notify(rect))
+        Compositor::the().invalidate_window();
+}
+
+bool Window::invalidate_no_notify(const Gfx::IntRect& rect)
+{
+    if (m_invalidated_all || rect.is_empty())
+        return false;
+
     auto outer_rect = frame().rect();
     auto inner_rect = rect;
     inner_rect.move_by(position());
     // FIXME: This seems slightly wrong; the inner rect shouldn't intersect the border part of the outer rect.
     inner_rect.intersect(outer_rect);
-    Compositor::the().invalidate(inner_rect);
+    if (inner_rect.is_empty())
+        return false;
+
+    m_invalidated = true;
+    m_dirty_rects.add(inner_rect.translated(-outer_rect.location()));
+    return true;
+}
+
+void Window::prepare_dirty_rects()
+{
+    if (m_invalidated_all) {
+        if (m_invalidated_frame)
+            m_dirty_rects = frame().rect();
+        else
+            m_dirty_rects = rect();
+    } else {
+        m_dirty_rects.move_by(frame().rect().location());
+    }
+}
+
+void Window::clear_dirty_rects()
+{
+    m_invalidated_all = false;
+    m_invalidated_frame = false;
+    m_invalidated = false;
+    m_dirty_rects.clear_with_capacity();
 }
 
 bool Window::is_active() const
@@ -414,6 +461,8 @@ void Window::set_default_icon()
 
 void Window::request_update(const Gfx::IntRect& rect, bool ignore_occlusion)
 {
+    if (rect.is_empty())
+        return;
     if (m_pending_paint_rects.is_empty()) {
         deferred_invoke([this, ignore_occlusion](auto&) {
             client()->post_paint_message(*this, ignore_occlusion);
@@ -511,6 +560,7 @@ void Window::set_fullscreen(bool fullscreen)
     } else if (!m_saved_nonfullscreen_rect.is_empty()) {
         new_window_rect = m_saved_nonfullscreen_rect;
     }
+
     Core::EventLoop::current().post_event(*this, make<ResizeEvent>(m_rect, new_window_rect));
     set_rect(new_window_rect);
 }
diff --git a/Services/WindowServer/Window.h b/Services/WindowServer/Window.h
index 5e0d582dd7ec..5a92d8453f98 100644
--- a/Services/WindowServer/Window.h
+++ b/Services/WindowServer/Window.h
@@ -167,8 +167,13 @@ class Window final : public Core::Object
 
     Gfx::IntSize size() const { return m_rect.size(); }
 
-    void invalidate();
+    void invalidate(bool with_frame = true);
     void invalidate(const Gfx::IntRect&);
+    bool invalidate_no_notify(const Gfx::IntRect& rect);
+
+    void prepare_dirty_rects();
+    void clear_dirty_rects();
+    Gfx::DisjointRectSet& dirty_rects() { return m_dirty_rects; }
 
     virtual void event(Core::Event&) override;
 
@@ -262,6 +267,21 @@ class Window final : public Core::Object
     bool default_positioned() const { return m_default_positioned; }
     void set_default_positioned(bool p) { m_default_positioned = p; }
 
+    bool is_invalidated() const { return m_invalidated; }
+
+    bool is_opaque() const
+    {
+        if (opacity() < 1.0f)
+            return false;
+        if (has_alpha_channel())
+            return false;
+        return true;
+    }
+
+    Gfx::DisjointRectSet& opaque_rects() { return m_opaque_rects; }
+    Gfx::DisjointRectSet& transparency_rects() { return m_transparency_rects; }
+    Gfx::DisjointRectSet& transparency_wallpaper_rects() { return m_transparency_wallpaper_rects; }
+
 private:
     void handle_mouse_event(const MouseEvent&);
     void update_menu_item_text(PopupMenuItem item);
@@ -281,6 +301,10 @@ class Window final : public Core::Object
     Gfx::IntRect m_rect;
     Gfx::IntRect m_saved_nonfullscreen_rect;
     Gfx::IntRect m_taskbar_rect;
+    Gfx::DisjointRectSet m_dirty_rects;
+    Gfx::DisjointRectSet m_opaque_rects;
+    Gfx::DisjointRectSet m_transparency_rects;
+    Gfx::DisjointRectSet m_transparency_wallpaper_rects;
     WindowType m_type { WindowType::Normal };
     bool m_global_cursor_tracking_enabled { false };
     bool m_automatic_cursor_tracking_enabled { false };
@@ -297,6 +321,9 @@ class Window final : public Core::Object
     bool m_accessory { false };
     bool m_destroyed { false };
     bool m_default_positioned { false };
+    bool m_invalidated { true };
+    bool m_invalidated_all { true };
+    bool m_invalidated_frame { true };
     WindowTileType m_tiled { WindowTileType::None };
     Gfx::IntRect m_untiled_rect;
     bool m_occluded { false };
diff --git a/Services/WindowServer/WindowFrame.cpp b/Services/WindowServer/WindowFrame.cpp
index 505ac49cf0ce..73bccf7a2592 100644
--- a/Services/WindowServer/WindowFrame.cpp
+++ b/Services/WindowServer/WindowFrame.cpp
@@ -234,17 +234,31 @@ Gfx::IntRect WindowFrame::rect() const
 
 void WindowFrame::invalidate_title_bar()
 {
-    Compositor::the().invalidate(title_bar_rect().translated(rect().location()));
+    invalidate(title_bar_rect());
+}
+
+void WindowFrame::invalidate(Gfx::IntRect relative_rect)
+{
+    auto frame_rect = rect();
+    auto window_rect = m_window.rect();
+    relative_rect.move_by(frame_rect.x() - window_rect.x(), frame_rect.y() - window_rect.y());
+    m_window.invalidate(relative_rect);
 }
 
 void WindowFrame::notify_window_rect_changed(const Gfx::IntRect& old_rect, const Gfx::IntRect& new_rect)
 {
     layout_buttons();
 
-    auto& wm = WindowManager::the();
-    wm.invalidate(frame_rect_for_window(m_window, old_rect));
-    wm.invalidate(frame_rect_for_window(m_window, new_rect));
-    wm.notify_rect_changed(m_window, old_rect, new_rect);
+    auto old_frame_rect = frame_rect_for_window(m_window, old_rect);
+    auto& compositor = Compositor::the();
+    for (auto& dirty : old_frame_rect.shatter(rect()))
+        compositor.invalidate_screen(dirty);
+    if (!m_window.is_opaque())
+        compositor.invalidate_screen(rect());
+
+    compositor.invalidate_occlusions();
+
+    WindowManager::the().notify_rect_changed(m_window, old_rect, new_rect);
 }
 
 void WindowFrame::layout_buttons()
diff --git a/Services/WindowServer/WindowFrame.h b/Services/WindowServer/WindowFrame.h
index 6b8738cc4a97..b398eb4709ab 100644
--- a/Services/WindowServer/WindowFrame.h
+++ b/Services/WindowServer/WindowFrame.h
@@ -47,6 +47,7 @@ class WindowFrame {
     void on_mouse_event(const MouseEvent&);
     void notify_window_rect_changed(const Gfx::IntRect& old_rect, const Gfx::IntRect& new_rect);
     void invalidate_title_bar();
+    void invalidate(Gfx::IntRect relative_rect);
 
     Gfx::IntRect title_bar_rect() const;
     Gfx::IntRect title_bar_icon_rect() const;
diff --git a/Services/WindowServer/WindowManager.cpp b/Services/WindowServer/WindowManager.cpp
index de501efb5aa0..77c921a1fa58 100644
--- a/Services/WindowServer/WindowManager.cpp
+++ b/Services/WindowServer/WindowManager.cpp
@@ -74,7 +74,8 @@ WindowManager::WindowManager(const Gfx::PaletteImpl& palette)
 
     reload_config(false);
 
-    invalidate();
+    Compositor::the().invalidate_screen();
+    Compositor::the().invalidate_occlusions();
     Compositor::the().compose();
 }
 
@@ -188,7 +189,7 @@ void WindowManager::add_window(Window& window)
     if (m_switcher.is_visible() && window.type() != WindowType::WindowSwitcher)
         m_switcher.refresh();
 
-    Compositor::the().recompute_occlusions();
+    Compositor::the().invalidate_occlusions();
 
     if (window.listens_to_wm_events()) {
         for_each_window([&](Window& other_window) {
@@ -228,6 +229,8 @@ void WindowManager::move_to_front_and_make_active(Window& window)
     for_each_window_in_modal_stack(window, [&](auto& w, bool is_stack_top) {
         move_window_to_front(w, is_stack_top, is_stack_top);
     });
+
+    Compositor::the().invalidate_occlusions();
 }
 
 void WindowManager::do_move_to_front(Window& window, bool make_active, bool make_input)
@@ -237,8 +240,6 @@ void WindowManager::do_move_to_front(Window& window, bool make_active, bool make
     m_windows_in_order.remove(&window);
     m_windows_in_order.append(&window);
 
-    Compositor::the().recompute_occlusions();
-
     if (make_active)
         set_active_window(&window, make_input);
 
@@ -258,16 +259,18 @@ void WindowManager::do_move_to_front(Window& window, bool make_active, bool make
 
 void WindowManager::remove_window(Window& window)
 {
-    window.invalidate();
     m_windows_in_order.remove(&window);
     auto* active = active_window();
     auto* active_input = active_input_window();
     if (active == &window || active_input == &window || (active && window.is_descendant_of(*active)) || (active_input && active_input != active && window.is_descendant_of(*active_input)))
         pick_new_active_window(&window);
+
+    Compositor::the().invalidate_screen(window.frame().rect());
+
     if (m_switcher.is_visible() && window.type() != WindowType::WindowSwitcher)
         m_switcher.refresh();
 
-    Compositor::the().recompute_occlusions();
+    Compositor::the().invalidate_occlusions();
 
     for_each_window_listening_to_wm_events([&window](Window& listener) {
         if (!(listener.wm_event_mask() & WMEventMask::WindowRemovals))
@@ -345,7 +348,6 @@ void WindowManager::notify_title_changed(Window& window)
 #ifdef WINDOWMANAGER_DEBUG
     dbg() << ""[WM] Window{"" << &window << ""} title set to \"""" << window.title() << '""';
 #endif
-    invalidate(window.frame().rect());
     if (m_switcher.is_visible())
         m_switcher.refresh();
 
@@ -375,8 +377,6 @@ void WindowManager::notify_rect_changed(Window& window, const Gfx::IntRect& old_
     if (m_switcher.is_visible() && window.type() != WindowType::WindowSwitcher)
         m_switcher.refresh();
 
-    Compositor::the().recompute_occlusions();
-
     tell_wm_listeners_window_rect_changed(window);
 
     if (window.type() == WindowType::MenuApplet)
@@ -387,7 +387,7 @@ void WindowManager::notify_rect_changed(Window& window, const Gfx::IntRect& old_
 
 void WindowManager::notify_opacity_changed(Window&)
 {
-    Compositor::the().recompute_occlusions();
+    Compositor::the().invalidate_occlusions();
 }
 
 void WindowManager::notify_minimization_state_changed(Window& window)
@@ -965,7 +965,6 @@ void WindowManager::process_mouse_event(MouseEvent& event, Window*& hovered_wind
                 if (new_opacity > 1.0f)
                     new_opacity = 1.0f;
                 window.set_opacity(new_opacity);
-                window.invalidate();
                 return;
             }
 
@@ -1255,16 +1254,6 @@ void WindowManager::set_hovered_window(Window* window)
         Core::EventLoop::current().post_event(*m_hovered_window, make<Event>(Event::WindowEntered));
 }
 
-void WindowManager::invalidate()
-{
-    Compositor::the().invalidate();
-}
-
-void WindowManager::invalidate(const Gfx::IntRect& rect)
-{
-    Compositor::the().invalidate(rect);
-}
-
 const ClientConnection* WindowManager::active_client() const
 {
     if (m_active_window)
@@ -1410,7 +1399,7 @@ bool WindowManager::update_theme(String theme_path, String theme_name)
     auto wm_config = Core::ConfigFile::open(""/etc/WindowServer/WindowServer.ini"");
     wm_config->write_entry(""Theme"", ""Name"", theme_name);
     wm_config->sync();
-    invalidate();
+    Compositor::the().invalidate_screen();
     return true;
 }
 
diff --git a/Services/WindowServer/WindowManager.h b/Services/WindowServer/WindowManager.h
index ec1306a7cc60..eeece8f29a7d 100644
--- a/Services/WindowServer/WindowManager.h
+++ b/Services/WindowServer/WindowManager.h
@@ -138,10 +138,6 @@ class WindowManager : public Core::Object {
     const Cursor& drag_cursor() const { return *m_drag_cursor; }
     const Cursor& wait_cursor() const { return *m_wait_cursor; }
 
-    void invalidate(const Gfx::IntRect&);
-    void invalidate();
-    void flush(const Gfx::IntRect&);
-
     const Gfx::Font& font() const;
     const Gfx::Font& window_title_font() const;
 
diff --git a/Services/WindowServer/WindowSwitcher.cpp b/Services/WindowServer/WindowSwitcher.cpp
index f72a2287e1f3..e75e0ac93c27 100644
--- a/Services/WindowServer/WindowSwitcher.cpp
+++ b/Services/WindowServer/WindowSwitcher.cpp
@@ -57,7 +57,7 @@ void WindowSwitcher::set_visible(bool visible)
     if (m_visible == visible)
         return;
     m_visible = visible;
-    Compositor::the().recompute_occlusions();
+    Compositor::the().invalidate_occlusions();
     if (m_switcher_window)
         m_switcher_window->set_visible(visible);
     if (!m_visible)
@@ -162,7 +162,7 @@ void WindowSwitcher::select_window_at_index(int index)
 void WindowSwitcher::redraw()
 {
     draw();
-    Compositor::the().invalidate(m_rect);
+    Compositor::the().invalidate_screen(m_rect);
 }
 
 Gfx::IntRect WindowSwitcher::item_rect(int index) const"
a8bf2f8e4cc96e0598079574a84bc2970ca50f4b,2023-02-12 03:17:57,Linus Groh,libjs: Port Symbol to String,False,Port Symbol to String,libjs,"diff --git a/Userland/Libraries/LibJS/AST.cpp b/Userland/Libraries/LibJS/AST.cpp
index 27dedae69add..23255544969b 100644
--- a/Userland/Libraries/LibJS/AST.cpp
+++ b/Userland/Libraries/LibJS/AST.cpp
@@ -97,7 +97,7 @@ static void update_function_name(Value value, DeprecatedFlyString const& name)
 static ThrowCompletionOr<DeprecatedString> get_function_property_name(PropertyKey key)
 {
     if (key.is_symbol())
-        return DeprecatedString::formatted(""[{}]"", key.as_symbol()->description().value_or(""""));
+        return DeprecatedString::formatted(""[{}]"", key.as_symbol()->description().value_or(String {}));
     return key.to_string();
 }
 
diff --git a/Userland/Libraries/LibJS/Runtime/Reference.cpp b/Userland/Libraries/LibJS/Runtime/Reference.cpp
index 549d811c8eb9..0c0f68fd1069 100644
--- a/Userland/Libraries/LibJS/Runtime/Reference.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Reference.cpp
@@ -216,7 +216,7 @@ DeprecatedString Reference::to_deprecated_string() const
     if (!m_name.is_valid())
         builder.append(""<invalid>""sv);
     else if (m_name.is_symbol())
-        builder.appendff(""{}"", m_name.as_symbol()->descriptive_string());
+        builder.appendff(""{}"", m_name.as_symbol()->descriptive_string().release_value_but_fixme_should_propagate_errors());
     else
         builder.appendff(""{}"", m_name.to_string());
     builder.appendff("", Strict={}"", m_strict);
diff --git a/Userland/Libraries/LibJS/Runtime/StringConstructor.cpp b/Userland/Libraries/LibJS/Runtime/StringConstructor.cpp
index 0715342f96b0..659122d41f95 100644
--- a/Userland/Libraries/LibJS/Runtime/StringConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/StringConstructor.cpp
@@ -47,7 +47,7 @@ ThrowCompletionOr<Value> StringConstructor::call()
     if (!vm.argument_count())
         return PrimitiveString::create(vm, String {});
     if (vm.argument(0).is_symbol())
-        return PrimitiveString::create(vm, vm.argument(0).as_symbol().descriptive_string());
+        return PrimitiveString::create(vm, TRY_OR_THROW_OOM(vm, vm.argument(0).as_symbol().descriptive_string()));
     return TRY(vm.argument(0).to_primitive_string(vm));
 }
 
diff --git a/Userland/Libraries/LibJS/Runtime/StringOrSymbol.h b/Userland/Libraries/LibJS/Runtime/StringOrSymbol.h
index 2941e611f053..bb835277537f 100644
--- a/Userland/Libraries/LibJS/Runtime/StringOrSymbol.h
+++ b/Userland/Libraries/LibJS/Runtime/StringOrSymbol.h
@@ -79,7 +79,7 @@ class StringOrSymbol {
         if (is_string())
             return as_string();
         if (is_symbol())
-            return as_symbol()->descriptive_string();
+            return as_symbol()->descriptive_string().release_value_but_fixme_should_propagate_errors().to_deprecated_string();
         VERIFY_NOT_REACHED();
     }
 
diff --git a/Userland/Libraries/LibJS/Runtime/Symbol.cpp b/Userland/Libraries/LibJS/Runtime/Symbol.cpp
index 9d24970b6982..65750d1e6c62 100644
--- a/Userland/Libraries/LibJS/Runtime/Symbol.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Symbol.cpp
@@ -11,27 +11,27 @@
 
 namespace JS {
 
-Symbol::Symbol(Optional<DeprecatedString> description, bool is_global)
+Symbol::Symbol(Optional<String> description, bool is_global)
     : m_description(move(description))
     , m_is_global(is_global)
 {
 }
 
-NonnullGCPtr<Symbol> Symbol::create(VM& vm, Optional<DeprecatedString> description, bool is_global)
+NonnullGCPtr<Symbol> Symbol::create(VM& vm, Optional<String> description, bool is_global)
 {
     return vm.heap().allocate_without_realm<Symbol>(move(description), is_global);
 }
 
 // 20.4.3.3.1 SymbolDescriptiveString ( sym ), https://tc39.es/ecma262/#sec-symboldescriptivestring
-DeprecatedString Symbol::descriptive_string() const
+ErrorOr<String> Symbol::descriptive_string() const
 {
     // 1. Let desc be sym's [[Description]] value.
     // 2. If desc is undefined, set desc to the empty String.
     // 3. Assert: desc is a String.
-    auto description = m_description.value_or("""");
+    auto description = m_description.value_or(String {});
 
     // 4. Return the string-concatenation of ""Symbol("", desc, and "")"".
-    return DeprecatedString::formatted(""Symbol({})"", description);
+    return String::formatted(""Symbol({})"", description);
 }
 
 }
diff --git a/Userland/Libraries/LibJS/Runtime/Symbol.h b/Userland/Libraries/LibJS/Runtime/Symbol.h
index 01448ec27d72..6da84100d7c0 100644
--- a/Userland/Libraries/LibJS/Runtime/Symbol.h
+++ b/Userland/Libraries/LibJS/Runtime/Symbol.h
@@ -7,8 +7,7 @@
 
 #pragma once
 
-#include <AK/DeprecatedString.h>
-#include <AK/StringView.h>
+#include <AK/String.h>
 #include <LibJS/Heap/Cell.h>
 
 namespace JS {
@@ -17,19 +16,19 @@ class Symbol final : public Cell {
     JS_CELL(Symbol, Cell);
 
 public:
-    [[nodiscard]] static NonnullGCPtr<Symbol> create(VM&, Optional<DeprecatedString> description, bool is_global);
+    [[nodiscard]] static NonnullGCPtr<Symbol> create(VM&, Optional<String> description, bool is_global);
 
     virtual ~Symbol() = default;
 
-    Optional<DeprecatedString> const& description() const { return m_description; }
+    Optional<String> const& description() const { return m_description; }
     bool is_global() const { return m_is_global; }
 
-    DeprecatedString descriptive_string() const;
+    ErrorOr<String> descriptive_string() const;
 
 private:
-    Symbol(Optional<DeprecatedString>, bool);
+    Symbol(Optional<String>, bool);
 
-    Optional<DeprecatedString> m_description;
+    Optional<String> m_description;
     bool m_is_global;
 };
 
diff --git a/Userland/Libraries/LibJS/Runtime/SymbolConstructor.cpp b/Userland/Libraries/LibJS/Runtime/SymbolConstructor.cpp
index 307fa03c39c7..5c736b577c08 100644
--- a/Userland/Libraries/LibJS/Runtime/SymbolConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/SymbolConstructor.cpp
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2020, Matthew Olsson <mattco@serenityos.org>
- * Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
+ * Copyright (c) 2022-2023, Linus Groh <linusg@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -44,7 +44,7 @@ ThrowCompletionOr<Value> SymbolConstructor::call()
     auto& vm = this->vm();
     if (vm.argument(0).is_undefined())
         return Symbol::create(vm, {}, false);
-    return Symbol::create(vm, TRY(vm.argument(0).to_deprecated_string(vm)), false);
+    return Symbol::create(vm, TRY(vm.argument(0).to_string(vm)), false);
 }
 
 // 20.4.1.1 Symbol ( [ description ] ), https://tc39.es/ecma262/#sec-symbol-description
@@ -57,7 +57,7 @@ ThrowCompletionOr<NonnullGCPtr<Object>> SymbolConstructor::construct(FunctionObj
 JS_DEFINE_NATIVE_FUNCTION(SymbolConstructor::for_)
 {
     // 1. Let stringKey be ? ToString(key).
-    auto string_key = TRY(vm.argument(0).to_deprecated_string(vm));
+    auto string_key = TRY(vm.argument(0).to_string(vm));
 
     // 2. For each element e of the GlobalSymbolRegistry List, do
     auto result = vm.global_symbol_registry().get(string_key);
diff --git a/Userland/Libraries/LibJS/Runtime/SymbolPrototype.cpp b/Userland/Libraries/LibJS/Runtime/SymbolPrototype.cpp
index b6c6c1d92078..9fcb5f90fbe6 100644
--- a/Userland/Libraries/LibJS/Runtime/SymbolPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/SymbolPrototype.cpp
@@ -63,7 +63,7 @@ JS_DEFINE_NATIVE_FUNCTION(SymbolPrototype::description_getter)
 JS_DEFINE_NATIVE_FUNCTION(SymbolPrototype::to_string)
 {
     auto* symbol = TRY(this_symbol_value(vm, vm.this_value()));
-    return PrimitiveString::create(vm, symbol->descriptive_string());
+    return PrimitiveString::create(vm, TRY_OR_THROW_OOM(vm, symbol->descriptive_string()));
 }
 
 // 20.4.3.4 Symbol.prototype.valueOf ( ), https://tc39.es/ecma262/#sec-symbol.prototype.valueof
diff --git a/Userland/Libraries/LibJS/Runtime/VM.cpp b/Userland/Libraries/LibJS/Runtime/VM.cpp
index d0ee2edea2cf..d1001a86e98f 100644
--- a/Userland/Libraries/LibJS/Runtime/VM.cpp
+++ b/Userland/Libraries/LibJS/Runtime/VM.cpp
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2020-2022, Linus Groh <linusg@serenityos.org>
+ * Copyright (c) 2020-2023, Linus Groh <linusg@serenityos.org>
  * Copyright (c) 2021-2022, David Tuin <davidot@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
@@ -10,6 +10,7 @@
 #include <AK/Debug.h>
 #include <AK/LexicalPath.h>
 #include <AK/ScopeGuard.h>
+#include <AK/String.h>
 #include <AK/StringBuilder.h>
 #include <LibCore/File.h>
 #include <LibJS/AST.h>
@@ -149,7 +150,7 @@ VM::VM(OwnPtr<CustomData> custom_data)
     };
 
 #define __JS_ENUMERATE(SymbolName, snake_name) \
-    m_well_known_symbol_##snake_name = Symbol::create(*this, ""Symbol."" #SymbolName, false);
+    m_well_known_symbol_##snake_name = Symbol::create(*this, String::from_utf8(""Symbol."" #SymbolName##sv).release_value_but_fixme_should_propagate_errors(), false);
     JS_ENUMERATE_WELL_KNOWN_SYMBOLS
 #undef __JS_ENUMERATE
 }
diff --git a/Userland/Libraries/LibJS/Runtime/VM.h b/Userland/Libraries/LibJS/Runtime/VM.h
index 4cc9c2389427..2009e377f247 100644
--- a/Userland/Libraries/LibJS/Runtime/VM.h
+++ b/Userland/Libraries/LibJS/Runtime/VM.h
@@ -1,6 +1,6 @@
 /*
  * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2020-2022, Linus Groh <linusg@serenityos.org>
+ * Copyright (c) 2020-2023, Linus Groh <linusg@serenityos.org>
  * Copyright (c) 2021-2022, David Tuin <davidot@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
@@ -176,8 +176,8 @@ class VM : public RefCounted<VM> {
 
     StackInfo const& stack_info() const { return m_stack_info; };
 
-    HashMap<DeprecatedString, NonnullGCPtr<Symbol>> const& global_symbol_registry() const { return m_global_symbol_registry; }
-    HashMap<DeprecatedString, NonnullGCPtr<Symbol>>& global_symbol_registry() { return m_global_symbol_registry; }
+    HashMap<String, NonnullGCPtr<Symbol>> const& global_symbol_registry() const { return m_global_symbol_registry; }
+    HashMap<String, NonnullGCPtr<Symbol>>& global_symbol_registry() { return m_global_symbol_registry; }
 
     u32 execution_generation() const { return m_execution_generation; }
     void finish_execution_generation() { ++m_execution_generation; }
@@ -277,7 +277,7 @@ class VM : public RefCounted<VM> {
     StackInfo m_stack_info;
 
     // GlobalSymbolRegistry, https://tc39.es/ecma262/#table-globalsymbolregistry-record-fields
-    HashMap<DeprecatedString, NonnullGCPtr<Symbol>> m_global_symbol_registry;
+    HashMap<String, NonnullGCPtr<Symbol>> m_global_symbol_registry;
 
     Vector<Function<ThrowCompletionOr<Value>()>> m_promise_jobs;
 
diff --git a/Userland/Libraries/LibJS/Runtime/Value.cpp b/Userland/Libraries/LibJS/Runtime/Value.cpp
index e464cace50f3..680d3b3a17da 100644
--- a/Userland/Libraries/LibJS/Runtime/Value.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Value.cpp
@@ -372,7 +372,7 @@ DeprecatedString Value::to_string_without_side_effects() const
     case STRING_TAG:
         return MUST(as_string().deprecated_string());
     case SYMBOL_TAG:
-        return as_symbol().descriptive_string();
+        return as_symbol().descriptive_string().release_value_but_fixme_should_propagate_errors().to_deprecated_string();
     case BIGINT_TAG:
         return as_bigint().to_deprecated_string();
     case OBJECT_TAG:"
820676857a6c3e79826261d2f843481a3bd79cf1,2024-08-28 23:00:40,simonkrauter,libweb: Use nearest-neighbor scaling for ScalingMode::SmoothPixels,False,Use nearest-neighbor scaling for ScalingMode::SmoothPixels,libweb,"diff --git a/Userland/Libraries/LibWeb/Painting/DisplayListPlayerSkia.cpp b/Userland/Libraries/LibWeb/Painting/DisplayListPlayerSkia.cpp
index 21fb54a52985..e379a10a8112 100644
--- a/Userland/Libraries/LibWeb/Painting/DisplayListPlayerSkia.cpp
+++ b/Userland/Libraries/LibWeb/Painting/DisplayListPlayerSkia.cpp
@@ -317,9 +317,9 @@ static SkSamplingOptions to_skia_sampling_options(Gfx::ScalingMode scaling_mode)
 {
     switch (scaling_mode) {
     case Gfx::ScalingMode::NearestNeighbor:
+    case Gfx::ScalingMode::SmoothPixels:
         return SkSamplingOptions(SkFilterMode::kNearest);
     case Gfx::ScalingMode::BilinearBlend:
-    case Gfx::ScalingMode::SmoothPixels:
         return SkSamplingOptions(SkFilterMode::kLinear);
     case Gfx::ScalingMode::BoxSampling:
         return SkSamplingOptions(SkCubicResampler::Mitchell());"
85561feb40838f1407078e8de5d7eb0a66a31aad,2021-06-29 23:33:36,Gunnar Beutner,kernel: Rename some variables to arch-independent names,False,Rename some variables to arch-independent names,kernel,"diff --git a/Kernel/Syscalls/thread.cpp b/Kernel/Syscalls/thread.cpp
index b9a4a2992ae7..e15aa263bf26 100644
--- a/Kernel/Syscalls/thread.cpp
+++ b/Kernel/Syscalls/thread.cpp
@@ -28,12 +28,12 @@ KResultOr<FlatPtr> Process::sys$create_thread(void* (*entry)(void*), Userspace<c
     int schedule_priority = params.m_schedule_priority;
     unsigned stack_size = params.m_stack_size;
 
-    auto user_esp = Checked<FlatPtr>((FlatPtr)params.m_stack_location);
-    user_esp += stack_size;
-    if (user_esp.has_overflow())
+    auto user_sp = Checked<FlatPtr>((FlatPtr)params.m_stack_location);
+    user_sp += stack_size;
+    if (user_sp.has_overflow())
         return EOVERFLOW;
 
-    if (!MM.validate_user_stack(*this, VirtualAddress(user_esp.value() - 4)))
+    if (!MM.validate_user_stack(*this, VirtualAddress(user_sp.value() - 4)))
         return EFAULT;
 
     // FIXME: return EAGAIN if Thread::all_threads().size() is greater than PTHREAD_THREADS_MAX
@@ -65,11 +65,11 @@ KResultOr<FlatPtr> Process::sys$create_thread(void* (*entry)(void*), Userspace<c
 #if ARCH(I386)
     regs.eip = (FlatPtr)entry;
     regs.eflags = 0x0202;
-    regs.esp = user_esp.value();
+    regs.esp = user_sp.value();
 #else
     regs.rip = (FlatPtr)entry;
     regs.rflags = 0x0202;
-    regs.rsp = user_esp.value();
+    regs.rsp = user_sp.value();
 #endif
     regs.cr3 = space().page_directory().cr3();"
aaf5339fae5133eeabd12ec28ca589c6a0fd5f0e,2021-07-08 04:31:20,Timothy Flynn,libjs: Do not downcast from Object to RegExpObject unless needed,False,Do not downcast from Object to RegExpObject unless needed,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp b/Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp
index fcffff4dfe95..70e74c83c2bb 100644
--- a/Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp
@@ -268,7 +268,7 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::exec)
 // 22.2.5.15 RegExp.prototype.test ( S ), https://tc39.es/ecma262/#sec-regexp.prototype.test
 JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::test)
 {
-    auto* regexp_object = regexp_object_from(vm, global_object);
+    auto* regexp_object = this_object_from(vm, global_object);
     if (!regexp_object)
         return {};
 
@@ -310,7 +310,7 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::to_string)
 // 22.2.5.7 RegExp.prototype [ @@match ] ( string ), https://tc39.es/ecma262/#sec-regexp.prototype-@@match
 JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::symbol_match)
 {
-    auto* regexp_object = regexp_object_from(vm, global_object);
+    auto* regexp_object = this_object_from(vm, global_object);
     if (!regexp_object)
         return {};
     auto s = vm.argument(0).to_string(global_object);
@@ -380,7 +380,7 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::symbol_replace)
     auto string_value = vm.argument(0);
     auto replace_value = vm.argument(1);
 
-    auto* regexp_object = regexp_object_from(vm, global_object);
+    auto* regexp_object = this_object_from(vm, global_object);
     if (!regexp_object)
         return {};
     auto string = string_value.to_string(global_object);"
cdcc1ebbba26a52c7634287a534b75b435cec8dc,2023-11-19 23:23:17,Shannon Booth,libweb: Implement ReadableByteStreamControllerFillHeadPullIntoDescriptor,False,Implement ReadableByteStreamControllerFillHeadPullIntoDescriptor,libweb,"diff --git a/Userland/Libraries/LibWeb/Streams/AbstractOperations.cpp b/Userland/Libraries/LibWeb/Streams/AbstractOperations.cpp
index cef810d0d6a4..73b6c0d59777 100644
--- a/Userland/Libraries/LibWeb/Streams/AbstractOperations.cpp
+++ b/Userland/Libraries/LibWeb/Streams/AbstractOperations.cpp
@@ -493,6 +493,19 @@ void readable_stream_byob_reader_error_read_into_requests(ReadableStreamBYOBRead
     }
 }
 
+// https://streams.spec.whatwg.org/#readable-byte-stream-controller-fill-head-pull-into-descriptor
+void readable_byte_stream_controller_fill_head_pull_into_descriptor(ReadableByteStreamController const& controller, u64 size, PullIntoDescriptor& pull_into_descriptor)
+{
+    // 1. Assert: either controller.[[pendingPullIntos]] is empty, or controller.[[pendingPullIntos]][0] is pullIntoDescriptor.
+    VERIFY(controller.pending_pull_intos().is_empty() || &controller.pending_pull_intos().first() == &pull_into_descriptor);
+
+    // 2. Assert: controller.[[byobRequest]] is null.
+    VERIFY(!controller.byob_request());
+
+    // 3. Set pullIntoDescriptor’s bytes filled to bytes filled + size.
+    pull_into_descriptor.bytes_filled += size;
+}
+
 // https://streams.spec.whatwg.org/#readable-stream-default-reader-read
 WebIDL::ExceptionOr<void> readable_stream_default_reader_read(ReadableStreamDefaultReader& reader, ReadRequest& read_request)
 {
diff --git a/Userland/Libraries/LibWeb/Streams/AbstractOperations.h b/Userland/Libraries/LibWeb/Streams/AbstractOperations.h
index 8fdd7ed98efe..a7c17a5888e3 100644
--- a/Userland/Libraries/LibWeb/Streams/AbstractOperations.h
+++ b/Userland/Libraries/LibWeb/Streams/AbstractOperations.h
@@ -54,6 +54,7 @@ WebIDL::ExceptionOr<void> readable_stream_reader_generic_release(ReadableStreamG
 void readable_stream_default_reader_error_read_requests(ReadableStreamDefaultReader&, JS::Value error);
 void readable_stream_byob_reader_error_read_into_requests(ReadableStreamBYOBReader&, JS::Value error);
 JS::Value readable_byte_stream_controller_convert_pull_into_descriptor(JS::Realm&, PullIntoDescriptor const&);
+void readable_byte_stream_controller_fill_head_pull_into_descriptor(ReadableByteStreamController const&, u64 size, PullIntoDescriptor&);
 
 WebIDL::ExceptionOr<void> readable_stream_default_reader_read(ReadableStreamDefaultReader&, ReadRequest&);
 WebIDL::ExceptionOr<void> readable_stream_default_reader_release(ReadableStreamDefaultReader&);"
2c27b4e63c20bb82a6e41f6b35efd863ff872651,2024-01-19 16:17:59,Andrew Kaster,libweb: Ensure an ESO is pushed before doing structured deserialization,False,Ensure an ESO is pushed before doing structured deserialization,libweb,"diff --git a/Userland/Libraries/LibWeb/HTML/StructuredSerialize.cpp b/Userland/Libraries/LibWeb/HTML/StructuredSerialize.cpp
index ca1d70021da4..62c4d436259f 100644
--- a/Userland/Libraries/LibWeb/HTML/StructuredSerialize.cpp
+++ b/Userland/Libraries/LibWeb/HTML/StructuredSerialize.cpp
@@ -1142,8 +1142,16 @@ WebIDL::ExceptionOr<JS::Value> structured_deserialize(JS::VM& vm, SerializationR
     if (!memory.has_value())
         memory = DeserializationMemory { vm.heap() };
 
+    // IMPLEMENTATION DEFINED: We need to make sure there's an execution context for target_realm on the stack before constructing these JS objects
+    auto& target_settings = Bindings::host_defined_environment_settings_object(target_realm);
+    target_settings.prepare_to_run_script();
+
     Deserializer deserializer(vm, target_realm, serialized.span(), *memory);
-    return deserializer.deserialize();
+
+    auto result = deserializer.deserialize();
+
+    target_settings.clean_up_after_running_script();
+    return result;
 }
 
 }"
ece961f8825c88bc8ecf835aaf1db8e80f7f6436,2023-11-29 14:18:18,Andreas Kling,libjs: Pass call/construct argument lists as ReadonlySpan<Value>,False,Pass call/construct argument lists as ReadonlySpan<Value>,libjs,"diff --git a/Userland/Libraries/LibJS/Bytecode/CommonImplementations.cpp b/Userland/Libraries/LibJS/Bytecode/CommonImplementations.cpp
index 9f36c1bf3579..31c6c4120735 100644
--- a/Userland/Libraries/LibJS/Bytecode/CommonImplementations.cpp
+++ b/Userland/Libraries/LibJS/Bytecode/CommonImplementations.cpp
@@ -279,7 +279,7 @@ ThrowCompletionOr<void> put_by_property_key(VM& vm, Value base, Value this_value
     return {};
 }
 
-ThrowCompletionOr<Value> perform_call(Interpreter& interpreter, Value this_value, Op::CallType call_type, Value callee, MarkedVector<Value> argument_values)
+ThrowCompletionOr<Value> perform_call(Interpreter& interpreter, Value this_value, Op::CallType call_type, Value callee, ReadonlySpan<Value> argument_values)
 {
     auto& vm = interpreter.vm();
     auto& function = callee.as_function();
@@ -288,11 +288,11 @@ ThrowCompletionOr<Value> perform_call(Interpreter& interpreter, Value this_value
         if (callee == interpreter.realm().intrinsics().eval_function())
             return_value = TRY(perform_eval(vm, !argument_values.is_empty() ? argument_values[0].value_or(JS::js_undefined()) : js_undefined(), vm.in_strict_mode() ? CallerMode::Strict : CallerMode::NonStrict, EvalMode::Direct));
         else
-            return_value = TRY(JS::call(vm, function, this_value, move(argument_values)));
+            return_value = TRY(JS::call(vm, function, this_value, argument_values));
     } else if (call_type == Op::CallType::Call)
-        return_value = TRY(JS::call(vm, function, this_value, move(argument_values)));
+        return_value = TRY(JS::call(vm, function, this_value, argument_values));
     else
-        return_value = TRY(construct(vm, function, move(argument_values)));
+        return_value = TRY(construct(vm, function, argument_values));
 
     return return_value;
 }
@@ -633,7 +633,7 @@ ThrowCompletionOr<NonnullGCPtr<Object>> super_call_with_argument_array(VM& vm, V
         return vm.throw_completion<TypeError>(ErrorType::NotAConstructor, ""Super constructor"");
 
     // 6. Let result be ? Construct(func, argList, newTarget).
-    auto result = TRY(construct(vm, static_cast<FunctionObject&>(*func), move(arg_list), &new_target.as_function()));
+    auto result = TRY(construct(vm, static_cast<FunctionObject&>(*func), arg_list.span(), &new_target.as_function()));
 
     // 7. Let thisER be GetThisEnvironment().
     auto& this_environment = verify_cast<FunctionEnvironment>(*get_this_environment(vm));
diff --git a/Userland/Libraries/LibJS/Bytecode/CommonImplementations.h b/Userland/Libraries/LibJS/Bytecode/CommonImplementations.h
index 829a05638804..1b683de5d671 100644
--- a/Userland/Libraries/LibJS/Bytecode/CommonImplementations.h
+++ b/Userland/Libraries/LibJS/Bytecode/CommonImplementations.h
@@ -17,7 +17,7 @@ ThrowCompletionOr<Value> get_by_id(VM&, DeprecatedFlyString const& property, Val
 ThrowCompletionOr<Value> get_by_value(VM&, Value base_value, Value property_key_value);
 ThrowCompletionOr<Value> get_global(Bytecode::Interpreter&, DeprecatedFlyString const& identifier, GlobalVariableCache&);
 ThrowCompletionOr<void> put_by_property_key(VM&, Value base, Value this_value, Value value, PropertyKey name, Op::PropertyKind kind, PropertyLookupCache* = nullptr);
-ThrowCompletionOr<Value> perform_call(Interpreter&, Value this_value, Op::CallType, Value callee, MarkedVector<Value> argument_values);
+ThrowCompletionOr<Value> perform_call(Interpreter&, Value this_value, Op::CallType, Value callee, ReadonlySpan<Value> argument_values);
 ThrowCompletionOr<void> throw_if_needed_for_call(Interpreter&, Value callee, Op::CallType, Optional<StringTableIndex> const& expression_string);
 ThrowCompletionOr<Value> typeof_variable(VM&, DeprecatedFlyString const&);
 ThrowCompletionOr<void> set_variable(VM&, DeprecatedFlyString const&, Value, Op::EnvironmentMode, Op::SetVariable::InitializationMode, EnvironmentVariableCache&);
diff --git a/Userland/Libraries/LibJS/JIT/Compiler.cpp b/Userland/Libraries/LibJS/JIT/Compiler.cpp
index d64ca47bfe2a..40d5bcc27d65 100644
--- a/Userland/Libraries/LibJS/JIT/Compiler.cpp
+++ b/Userland/Libraries/LibJS/JIT/Compiler.cpp
@@ -2507,12 +2507,8 @@ static Value cxx_call(VM& vm, Value callee, u32 first_argument_index, u32 argume
 {
     TRY_OR_SET_EXCEPTION(throw_if_needed_for_call(vm.bytecode_interpreter(), callee, call_type, expression_string));
 
-    MarkedVector<Value> argument_values(vm.heap());
-    argument_values.ensure_capacity(argument_count);
-    for (u32 i = 0; i < argument_count; ++i) {
-        argument_values.unchecked_append(vm.bytecode_interpreter().reg(Bytecode::Register { first_argument_index + i }));
-    }
-    return TRY_OR_SET_EXCEPTION(perform_call(vm.bytecode_interpreter(), this_value, call_type, callee, move(argument_values)));
+    auto argument_values = vm.bytecode_interpreter().registers().slice(first_argument_index, argument_count);
+    return TRY_OR_SET_EXCEPTION(perform_call(vm.bytecode_interpreter(), this_value, call_type, callee, argument_values));
 }
 
 Assembler::Reg Compiler::argument_register(u32 index)
diff --git a/Userland/Libraries/LibJS/Runtime/AbstractOperations.cpp b/Userland/Libraries/LibJS/Runtime/AbstractOperations.cpp
index a344f91beeb0..c40b551f6549 100644
--- a/Userland/Libraries/LibJS/Runtime/AbstractOperations.cpp
+++ b/Userland/Libraries/LibJS/Runtime/AbstractOperations.cpp
@@ -47,46 +47,40 @@ ThrowCompletionOr<Value> require_object_coercible(VM& vm, Value value)
 }
 
 // 7.3.14 Call ( F, V [ , argumentsList ] ), https://tc39.es/ecma262/#sec-call
-ThrowCompletionOr<Value> call_impl(VM& vm, Value function, Value this_value, Optional<MarkedVector<Value>> arguments_list)
+ThrowCompletionOr<Value> call_impl(VM& vm, Value function, Value this_value, ReadonlySpan<Value> arguments_list)
 {
     // 1. If argumentsList is not present, set argumentsList to a new empty List.
-    if (!arguments_list.has_value())
-        arguments_list = MarkedVector<Value> { vm.heap() };
 
     // 2. If IsCallable(F) is false, throw a TypeError exception.
     if (!function.is_function())
         return vm.throw_completion<TypeError>(ErrorType::NotAFunction, function.to_string_without_side_effects());
 
     // 3. Return ? F.[[Call]](V, argumentsList).
-    return function.as_function().internal_call(this_value, move(*arguments_list));
+    return function.as_function().internal_call(this_value, arguments_list);
 }
 
-ThrowCompletionOr<Value> call_impl(VM& vm, FunctionObject& function, Value this_value, Optional<MarkedVector<Value>> arguments_list)
+ThrowCompletionOr<Value> call_impl(VM&, FunctionObject& function, Value this_value, ReadonlySpan<Value> arguments_list)
 {
     // 1. If argumentsList is not present, set argumentsList to a new empty List.
-    if (!arguments_list.has_value())
-        arguments_list = MarkedVector<Value> { vm.heap() };
 
     // 2. If IsCallable(F) is false, throw a TypeError exception.
     // Note: Called with a FunctionObject ref
 
     // 3. Return ? F.[[Call]](V, argumentsList).
-    return function.internal_call(this_value, move(*arguments_list));
+    return function.internal_call(this_value, arguments_list);
 }
 
 // 7.3.15 Construct ( F [ , argumentsList [ , newTarget ] ] ), https://tc39.es/ecma262/#sec-construct
-ThrowCompletionOr<NonnullGCPtr<Object>> construct_impl(VM& vm, FunctionObject& function, Optional<MarkedVector<Value>> arguments_list, FunctionObject* new_target)
+ThrowCompletionOr<NonnullGCPtr<Object>> construct_impl(VM&, FunctionObject& function, ReadonlySpan<Value> arguments_list, FunctionObject* new_target)
 {
     // 1. If newTarget is not present, set newTarget to F.
     if (!new_target)
         new_target = &function;
 
     // 2. If argumentsList is not present, set argumentsList to a new empty List.
-    if (!arguments_list.has_value())
-        arguments_list = MarkedVector<Value> { vm.heap() };
 
     // 3. Return ? F.[[Construct]](argumentsList, newTarget).
-    return function.internal_construct(move(*arguments_list), *new_target);
+    return function.internal_construct(arguments_list, *new_target);
 }
 
 // 7.3.19 LengthOfArrayLike ( obj ), https://tc39.es/ecma262/#sec-lengthofarraylike
diff --git a/Userland/Libraries/LibJS/Runtime/AbstractOperations.h b/Userland/Libraries/LibJS/Runtime/AbstractOperations.h
index c9629e8c4e05..6ef8f45c24df 100644
--- a/Userland/Libraries/LibJS/Runtime/AbstractOperations.h
+++ b/Userland/Libraries/LibJS/Runtime/AbstractOperations.h
@@ -28,9 +28,9 @@ NonnullGCPtr<Environment> get_this_environment(VM&);
 bool can_be_held_weakly(Value);
 Object* get_super_constructor(VM&);
 ThrowCompletionOr<Value> require_object_coercible(VM&, Value);
-ThrowCompletionOr<Value> call_impl(VM&, Value function, Value this_value, Optional<MarkedVector<Value>> = {});
-ThrowCompletionOr<Value> call_impl(VM&, FunctionObject& function, Value this_value, Optional<MarkedVector<Value>> = {});
-ThrowCompletionOr<NonnullGCPtr<Object>> construct_impl(VM&, FunctionObject&, Optional<MarkedVector<Value>> = {}, FunctionObject* new_target = nullptr);
+ThrowCompletionOr<Value> call_impl(VM&, Value function, Value this_value, ReadonlySpan<Value> arguments = {});
+ThrowCompletionOr<Value> call_impl(VM&, FunctionObject& function, Value this_value, ReadonlySpan<Value> arguments = {});
+ThrowCompletionOr<NonnullGCPtr<Object>> construct_impl(VM&, FunctionObject&, ReadonlySpan<Value> arguments = {}, FunctionObject* new_target = nullptr);
 ThrowCompletionOr<size_t> length_of_array_like(VM&, Object const&);
 ThrowCompletionOr<MarkedVector<Value>> create_list_from_array_like(VM&, Value, Function<ThrowCompletionOr<void>(Value)> = {});
 ThrowCompletionOr<FunctionObject*> species_constructor(VM&, Object const&, FunctionObject& default_constructor);
@@ -75,45 +75,45 @@ ThrowCompletionOr<Value> perform_eval(VM&, Value, CallerMode, EvalMode);
 ThrowCompletionOr<void> eval_declaration_instantiation(VM& vm, Program const& program, Environment* variable_environment, Environment* lexical_environment, PrivateEnvironment* private_environment, bool strict);
 
 // 7.3.14 Call ( F, V [ , argumentsList ] ), https://tc39.es/ecma262/#sec-call
-ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, Value function, Value this_value, MarkedVector<Value> arguments_list)
+ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, Value function, Value this_value, ReadonlySpan<Value> arguments_list)
 {
-    return call_impl(vm, function, this_value, move(arguments_list));
+    return call_impl(vm, function, this_value, arguments_list);
 }
 
-ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, Value function, Value this_value, Optional<MarkedVector<Value>> arguments_list)
+ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, Value function, Value this_value, Span<Value> arguments_list)
 {
-    return call_impl(vm, function, this_value, move(arguments_list));
+    return call_impl(vm, function, this_value, static_cast<ReadonlySpan<Value>>(arguments_list));
 }
 
 template<typename... Args>
 ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, Value function, Value this_value, Args&&... args)
 {
-    if constexpr (sizeof...(Args) > 0) {
-        MarkedVector<Value> arguments_list { vm.heap() };
-        (..., arguments_list.append(forward<Args>(args)));
-        return call_impl(vm, function, this_value, move(arguments_list));
+    constexpr auto argument_count = sizeof...(Args);
+    if constexpr (argument_count > 0) {
+        AK::Array<Value, argument_count> arguments { forward<Args>(args)... };
+        return call_impl(vm, function, this_value, static_cast<ReadonlySpan<Value>>(arguments.span()));
     }
 
     return call_impl(vm, function, this_value);
 }
 
-ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, FunctionObject& function, Value this_value, MarkedVector<Value> arguments_list)
+ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, FunctionObject& function, Value this_value, ReadonlySpan<Value> arguments_list)
 {
-    return call_impl(vm, function, this_value, move(arguments_list));
+    return call_impl(vm, function, this_value, arguments_list);
 }
 
-ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, FunctionObject& function, Value this_value, Optional<MarkedVector<Value>> arguments_list)
+ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, FunctionObject& function, Value this_value, Span<Value> arguments_list)
 {
-    return call_impl(vm, function, this_value, move(arguments_list));
+    return call_impl(vm, function, this_value, static_cast<ReadonlySpan<Value>>(arguments_list));
 }
 
 template<typename... Args>
 ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, FunctionObject& function, Value this_value, Args&&... args)
 {
-    if constexpr (sizeof...(Args) > 0) {
-        MarkedVector<Value> arguments_list { vm.heap() };
-        (..., arguments_list.append(forward<Args>(args)));
-        return call_impl(vm, function, this_value, move(arguments_list));
+    constexpr auto argument_count = sizeof...(Args);
+    if constexpr (argument_count > 0) {
+        AK::Array<Value, argument_count> arguments { forward<Args>(args)... };
+        return call_impl(vm, function, this_value, static_cast<ReadonlySpan<Value>>(arguments.span()));
     }
 
     return call_impl(vm, function, this_value);
@@ -123,23 +123,23 @@ ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, FunctionObject& function, Va
 template<typename... Args>
 ALWAYS_INLINE ThrowCompletionOr<NonnullGCPtr<Object>> construct(VM& vm, FunctionObject& function, Args&&... args)
 {
-    if constexpr (sizeof...(Args) > 0) {
-        MarkedVector<Value> arguments_list { vm.heap() };
-        (..., arguments_list.append(forward<Args>(args)));
-        return construct_impl(vm, function, move(arguments_list));
+    constexpr auto argument_count = sizeof...(Args);
+    if constexpr (argument_count > 0) {
+        AK::Array<Value, argument_count> arguments { forward<Args>(args)... };
+        return construct_impl(vm, function, static_cast<ReadonlySpan<Value>>(arguments.span()));
     }
 
     return construct_impl(vm, function);
 }
 
-ALWAYS_INLINE ThrowCompletionOr<NonnullGCPtr<Object>> construct(VM& vm, FunctionObject& function, MarkedVector<Value> arguments_list, FunctionObject* new_target = nullptr)
+ALWAYS_INLINE ThrowCompletionOr<NonnullGCPtr<Object>> construct(VM& vm, FunctionObject& function, ReadonlySpan<Value> arguments_list, FunctionObject* new_target = nullptr)
 {
-    return construct_impl(vm, function, move(arguments_list), new_target);
+    return construct_impl(vm, function, arguments_list, new_target);
 }
 
-ALWAYS_INLINE ThrowCompletionOr<NonnullGCPtr<Object>> construct(VM& vm, FunctionObject& function, Optional<MarkedVector<Value>> arguments_list, FunctionObject* new_target = nullptr)
+ALWAYS_INLINE ThrowCompletionOr<NonnullGCPtr<Object>> construct(VM& vm, FunctionObject& function, Span<Value> arguments_list, FunctionObject* new_target = nullptr)
 {
-    return construct_impl(vm, function, move(arguments_list), new_target);
+    return construct_impl(vm, function, static_cast<ReadonlySpan<Value>>(arguments_list), new_target);
 }
 
 // 10.1.13 OrdinaryCreateFromConstructor ( constructor, intrinsicDefaultProto [ , internalSlotsList ] ), https://tc39.es/ecma262/#sec-ordinarycreatefromconstructor
diff --git a/Userland/Libraries/LibJS/Runtime/Array.cpp b/Userland/Libraries/LibJS/Runtime/Array.cpp
index 2222935c4add..f17c7c83a82e 100644
--- a/Userland/Libraries/LibJS/Runtime/Array.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Array.cpp
@@ -63,6 +63,24 @@ NonnullGCPtr<Array> Array::create_from(Realm& realm, Vector<Value> const& elemen
     return array;
 }
 
+NonnullGCPtr<Array> Array::create_from(Realm& realm, ReadonlySpan<Value> const& elements)
+{
+    // 1. Let array be ! ArrayCreate(0).
+    auto array = MUST(Array::create(realm, 0));
+
+    // 2. Let n be 0.
+    // 3. For each element e of elements, do
+    for (u32 n = 0; n < elements.size(); ++n) {
+        // a. Perform ! CreateDataPropertyOrThrow(array, ! ToString(𝔽(n)), e).
+        MUST(array->create_data_property_or_throw(n, elements[n]));
+
+        // b. Set n to n + 1.
+    }
+
+    // 4. Return array.
+    return array;
+}
+
 Array::Array(Object& prototype)
     : Object(ConstructWithPrototypeTag::Tag, prototype)
 {
diff --git a/Userland/Libraries/LibJS/Runtime/Array.h b/Userland/Libraries/LibJS/Runtime/Array.h
index 8197c489e77b..d5f40d2a5bb0 100644
--- a/Userland/Libraries/LibJS/Runtime/Array.h
+++ b/Userland/Libraries/LibJS/Runtime/Array.h
@@ -26,6 +26,7 @@ class Array : public Object {
 public:
     static ThrowCompletionOr<NonnullGCPtr<Array>> create(Realm&, u64 length, Object* prototype = nullptr);
     static NonnullGCPtr<Array> create_from(Realm&, Vector<Value> const&);
+    static NonnullGCPtr<Array> create_from(Realm&, ReadonlySpan<Value> const&);
 
     // Non-standard but equivalent to CreateArrayFromList.
     template<typename T>
diff --git a/Userland/Libraries/LibJS/Runtime/BoundFunction.cpp b/Userland/Libraries/LibJS/Runtime/BoundFunction.cpp
index 1628b4d0ae38..8a10a55106c7 100644
--- a/Userland/Libraries/LibJS/Runtime/BoundFunction.cpp
+++ b/Userland/Libraries/LibJS/Runtime/BoundFunction.cpp
@@ -45,7 +45,7 @@ BoundFunction::BoundFunction(Realm& realm, FunctionObject& bound_target_function
 }
 
 // 10.4.1.1 [[Call]] ( thisArgument, argumentsList ), https://tc39.es/ecma262/#sec-bound-function-exotic-objects-call-thisargument-argumentslist
-ThrowCompletionOr<Value> BoundFunction::internal_call([[maybe_unused]] Value this_argument, MarkedVector<Value> arguments_list)
+ThrowCompletionOr<Value> BoundFunction::internal_call([[maybe_unused]] Value this_argument, ReadonlySpan<Value> arguments_list)
 {
     auto& vm = this->vm();
 
@@ -59,16 +59,17 @@ ThrowCompletionOr<Value> BoundFunction::internal_call([[maybe_unused]] Value thi
     auto& bound_args = m_bound_arguments;
 
     // 4. Let args be the list-concatenation of boundArgs and argumentsList.
-    auto args = MarkedVector<Value> { heap() };
+    Vector<Value> args;
+    args.ensure_capacity(bound_args.size() + arguments_list.size());
     args.extend(bound_args);
-    args.extend(move(arguments_list));
+    args.append(arguments_list.data(), arguments_list.size());
 
     // 5. Return ? Call(target, boundThis, args).
-    return call(vm, &target, bound_this, move(args));
+    return call(vm, &target, bound_this, args.span());
 }
 
 // 10.4.1.2 [[Construct]] ( argumentsList, newTarget ), https://tc39.es/ecma262/#sec-bound-function-exotic-objects-construct-argumentslist-newtarget
-ThrowCompletionOr<NonnullGCPtr<Object>> BoundFunction::internal_construct(MarkedVector<Value> arguments_list, FunctionObject& new_target)
+ThrowCompletionOr<NonnullGCPtr<Object>> BoundFunction::internal_construct(ReadonlySpan<Value> arguments_list, FunctionObject& new_target)
 {
     auto& vm = this->vm();
 
@@ -84,7 +85,7 @@ ThrowCompletionOr<NonnullGCPtr<Object>> BoundFunction::internal_construct(Marked
     // 4. Let args be the list-concatenation of boundArgs and argumentsList.
     auto args = MarkedVector<Value> { heap() };
     args.extend(bound_args);
-    args.extend(move(arguments_list));
+    args.append(arguments_list.data(), arguments_list.size());
 
     // 5. If SameValue(F, newTarget) is true, set newTarget to target.
     auto* final_new_target = &new_target;
@@ -92,7 +93,7 @@ ThrowCompletionOr<NonnullGCPtr<Object>> BoundFunction::internal_construct(Marked
         final_new_target = &target;
 
     // 6. Return ? Construct(target, args, newTarget).
-    return construct(vm, target, move(args), final_new_target);
+    return construct(vm, target, args.span(), final_new_target);
 }
 
 void BoundFunction::visit_edges(Visitor& visitor)
diff --git a/Userland/Libraries/LibJS/Runtime/BoundFunction.h b/Userland/Libraries/LibJS/Runtime/BoundFunction.h
index c85c6f187669..e5d4796f72d6 100644
--- a/Userland/Libraries/LibJS/Runtime/BoundFunction.h
+++ b/Userland/Libraries/LibJS/Runtime/BoundFunction.h
@@ -20,8 +20,8 @@ class BoundFunction final : public FunctionObject {
 
     virtual ~BoundFunction() override = default;
 
-    virtual ThrowCompletionOr<Value> internal_call(Value this_argument, MarkedVector<Value> arguments_list) override;
-    virtual ThrowCompletionOr<NonnullGCPtr<Object>> internal_construct(MarkedVector<Value> arguments_list, FunctionObject& new_target) override;
+    virtual ThrowCompletionOr<Value> internal_call(Value this_argument, ReadonlySpan<Value> arguments_list) override;
+    virtual ThrowCompletionOr<NonnullGCPtr<Object>> internal_construct(ReadonlySpan<Value> arguments_list, FunctionObject& new_target) override;
 
     virtual DeprecatedFlyString const& name() const override { return m_name; }
     virtual bool is_strict_mode() const override { return m_bound_target_function->is_strict_mode(); }
diff --git a/Userland/Libraries/LibJS/Runtime/ECMAScriptFunctionObject.cpp b/Userland/Libraries/LibJS/Runtime/ECMAScriptFunctionObject.cpp
index 1161224a784c..6b254fa34f87 100644
--- a/Userland/Libraries/LibJS/Runtime/ECMAScriptFunctionObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ECMAScriptFunctionObject.cpp
@@ -361,7 +361,7 @@ void ECMAScriptFunctionObject::initialize(Realm& realm)
 }
 
 // 10.2.1 [[Call]] ( thisArgument, argumentsList ), https://tc39.es/ecma262/#sec-ecmascript-function-objects-call-thisargument-argumentslist
-ThrowCompletionOr<Value> ECMAScriptFunctionObject::internal_call(Value this_argument, MarkedVector<Value> arguments_list)
+ThrowCompletionOr<Value> ECMAScriptFunctionObject::internal_call(Value this_argument, ReadonlySpan<Value> arguments_list)
 {
     auto& vm = this->vm();
 
@@ -373,7 +373,7 @@ ThrowCompletionOr<Value> ECMAScriptFunctionObject::internal_call(Value this_argu
     callee_context.local_variables.resize(m_local_variables_names.size());
 
     // Non-standard
-    callee_context.arguments.extend(move(arguments_list));
+    callee_context.arguments.append(arguments_list.data(), arguments_list.size());
     callee_context.instruction_stream_iterator = vm.bytecode_interpreter().instruction_stream_iterator();
 
     // 2. Let calleeContext be PrepareForOrdinaryCall(F, undefined).
@@ -420,7 +420,7 @@ ThrowCompletionOr<Value> ECMAScriptFunctionObject::internal_call(Value this_argu
 }
 
 // 10.2.2 [[Construct]] ( argumentsList, newTarget ), https://tc39.es/ecma262/#sec-ecmascript-function-objects-construct-argumentslist-newtarget
-ThrowCompletionOr<NonnullGCPtr<Object>> ECMAScriptFunctionObject::internal_construct(MarkedVector<Value> arguments_list, FunctionObject& new_target)
+ThrowCompletionOr<NonnullGCPtr<Object>> ECMAScriptFunctionObject::internal_construct(ReadonlySpan<Value> arguments_list, FunctionObject& new_target)
 {
     auto& vm = this->vm();
 
@@ -443,7 +443,7 @@ ThrowCompletionOr<NonnullGCPtr<Object>> ECMAScriptFunctionObject::internal_const
     callee_context.local_variables.resize(m_local_variables_names.size());
 
     // Non-standard
-    callee_context.arguments.extend(move(arguments_list));
+    callee_context.arguments.append(arguments_list.data(), arguments_list.size());
     callee_context.instruction_stream_iterator = vm.bytecode_interpreter().instruction_stream_iterator();
 
     // 4. Let calleeContext be PrepareForOrdinaryCall(F, newTarget).
diff --git a/Userland/Libraries/LibJS/Runtime/ECMAScriptFunctionObject.h b/Userland/Libraries/LibJS/Runtime/ECMAScriptFunctionObject.h
index 21184d8e20c6..c61cac27d5d9 100644
--- a/Userland/Libraries/LibJS/Runtime/ECMAScriptFunctionObject.h
+++ b/Userland/Libraries/LibJS/Runtime/ECMAScriptFunctionObject.h
@@ -44,8 +44,8 @@ class ECMAScriptFunctionObject final : public FunctionObject {
     virtual void initialize(Realm&) override;
     virtual ~ECMAScriptFunctionObject() override = default;
 
-    virtual ThrowCompletionOr<Value> internal_call(Value this_argument, MarkedVector<Value> arguments_list) override;
-    virtual ThrowCompletionOr<NonnullGCPtr<Object>> internal_construct(MarkedVector<Value> arguments_list, FunctionObject& new_target) override;
+    virtual ThrowCompletionOr<Value> internal_call(Value this_argument, ReadonlySpan<Value> arguments_list) override;
+    virtual ThrowCompletionOr<NonnullGCPtr<Object>> internal_construct(ReadonlySpan<Value> arguments_list, FunctionObject& new_target) override;
 
     void make_method(Object& home_object);
 
diff --git a/Userland/Libraries/LibJS/Runtime/FunctionObject.h b/Userland/Libraries/LibJS/Runtime/FunctionObject.h
index baacfd006aaf..238be5c5de6c 100644
--- a/Userland/Libraries/LibJS/Runtime/FunctionObject.h
+++ b/Userland/Libraries/LibJS/Runtime/FunctionObject.h
@@ -23,8 +23,8 @@ class FunctionObject : public Object {
 
     // Table 7: Additional Essential Internal Methods of Function Objects, https://tc39.es/ecma262/#table-additional-essential-internal-methods-of-function-objects
 
-    virtual ThrowCompletionOr<Value> internal_call(Value this_argument, MarkedVector<Value> arguments_list) = 0;
-    virtual ThrowCompletionOr<NonnullGCPtr<Object>> internal_construct([[maybe_unused]] MarkedVector<Value> arguments_list, [[maybe_unused]] FunctionObject& new_target) { VERIFY_NOT_REACHED(); }
+    virtual ThrowCompletionOr<Value> internal_call(Value this_argument, ReadonlySpan<Value> arguments_list) = 0;
+    virtual ThrowCompletionOr<NonnullGCPtr<Object>> internal_construct([[maybe_unused]] ReadonlySpan<Value> arguments_list, [[maybe_unused]] FunctionObject& new_target) { VERIFY_NOT_REACHED(); }
 
     virtual DeprecatedFlyString const& name() const = 0;
 
diff --git a/Userland/Libraries/LibJS/Runtime/FunctionPrototype.cpp b/Userland/Libraries/LibJS/Runtime/FunctionPrototype.cpp
index f5d17a883eb1..6463d70059c1 100644
--- a/Userland/Libraries/LibJS/Runtime/FunctionPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/FunctionPrototype.cpp
@@ -40,7 +40,7 @@ void FunctionPrototype::initialize(Realm& realm)
     define_direct_property(vm.names.name, PrimitiveString::create(vm, String {}), Attribute::Configurable);
 }
 
-ThrowCompletionOr<Value> FunctionPrototype::internal_call(Value, MarkedVector<Value>)
+ThrowCompletionOr<Value> FunctionPrototype::internal_call(Value, ReadonlySpan<Value>)
 {
     // The Function prototype object:
     // - accepts any arguments and returns undefined when invoked.
@@ -76,7 +76,7 @@ JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::apply)
     // FIXME: 5. Perform PrepareForTailCall().
 
     // 6. Return ? Call(func, thisArg, argList).
-    return TRY(JS::call(vm, function, this_arg, move(arguments)));
+    return TRY(JS::call(vm, function, this_arg, arguments.span()));
 }
 
 // 20.2.3.2 Function.prototype.bind ( thisArg, ...args ), https://tc39.es/ecma262/#sec-function.prototype.bind
@@ -130,14 +130,10 @@ JS_DEFINE_NATIVE_FUNCTION(FunctionPrototype::call)
     // FIXME: 3. Perform PrepareForTailCall().
 
     auto this_arg = vm.argument(0);
-    MarkedVector<Value> arguments(vm.heap());
-    if (vm.argument_count() > 1) {
-        for (size_t i = 1; i < vm.argument_count(); ++i)
-            arguments.append(vm.argument(i));
-    }
+    auto args = vm.argument_count() > 1 ? vm.running_execution_context().arguments.span().slice(1) : ReadonlySpan<Value> {};
 
     // 4. Return ? Call(func, thisArg, args).
-    return TRY(JS::call(vm, function, this_arg, move(arguments)));
+    return TRY(JS::call(vm, function, this_arg, args));
 }
 
 // 20.2.3.5 Function.prototype.toString ( ), https://tc39.es/ecma262/#sec-function.prototype.tostring
diff --git a/Userland/Libraries/LibJS/Runtime/FunctionPrototype.h b/Userland/Libraries/LibJS/Runtime/FunctionPrototype.h
index ea1378b706ea..ccd8b97a5275 100644
--- a/Userland/Libraries/LibJS/Runtime/FunctionPrototype.h
+++ b/Userland/Libraries/LibJS/Runtime/FunctionPrototype.h
@@ -18,7 +18,7 @@ class FunctionPrototype final : public FunctionObject {
     virtual void initialize(Realm&) override;
     virtual ~FunctionPrototype() override = default;
 
-    virtual ThrowCompletionOr<Value> internal_call(Value this_argument, MarkedVector<Value> arguments_list) override;
+    virtual ThrowCompletionOr<Value> internal_call(Value this_argument, ReadonlySpan<Value> arguments_list) override;
     virtual DeprecatedFlyString const& name() const override { return m_name; }
 
 private:
diff --git a/Userland/Libraries/LibJS/Runtime/JobCallback.cpp b/Userland/Libraries/LibJS/Runtime/JobCallback.cpp
index fe3d0303028f..e0f06fd9d7c5 100644
--- a/Userland/Libraries/LibJS/Runtime/JobCallback.cpp
+++ b/Userland/Libraries/LibJS/Runtime/JobCallback.cpp
@@ -18,13 +18,13 @@ JobCallback make_job_callback(FunctionObject& callback)
 }
 
 // 9.5.3 HostCallJobCallback ( jobCallback, V, argumentsList ), https://tc39.es/ecma262/#sec-hostcalljobcallback
-ThrowCompletionOr<Value> call_job_callback(VM& vm, JobCallback& job_callback, Value this_value, MarkedVector<Value> arguments_list)
+ThrowCompletionOr<Value> call_job_callback(VM& vm, JobCallback& job_callback, Value this_value, ReadonlySpan<Value> arguments_list)
 {
     // 1. Assert: IsCallable(jobCallback.[[Callback]]) is true.
     VERIFY(!job_callback.callback.is_null());
 
     // 2. Return ? Call(jobCallback.[[Callback]], V, argumentsList).
-    return call(vm, job_callback.callback.cell(), this_value, move(arguments_list));
+    return call(vm, job_callback.callback.cell(), this_value, arguments_list);
 }
 
 }
diff --git a/Userland/Libraries/LibJS/Runtime/JobCallback.h b/Userland/Libraries/LibJS/Runtime/JobCallback.h
index 00904127d396..4ff01c0d0d37 100644
--- a/Userland/Libraries/LibJS/Runtime/JobCallback.h
+++ b/Userland/Libraries/LibJS/Runtime/JobCallback.h
@@ -23,6 +23,6 @@ struct JobCallback {
 };
 
 JobCallback make_job_callback(FunctionObject& callback);
-ThrowCompletionOr<Value> call_job_callback(VM&, JobCallback&, Value this_value, MarkedVector<Value> arguments_list);
+ThrowCompletionOr<Value> call_job_callback(VM&, JobCallback&, Value this_value, ReadonlySpan<Value> arguments_list);
 
 }
diff --git a/Userland/Libraries/LibJS/Runtime/NativeFunction.cpp b/Userland/Libraries/LibJS/Runtime/NativeFunction.cpp
index d43b1d57e837..c55655ff870a 100644
--- a/Userland/Libraries/LibJS/Runtime/NativeFunction.cpp
+++ b/Userland/Libraries/LibJS/Runtime/NativeFunction.cpp
@@ -96,7 +96,7 @@ NativeFunction::NativeFunction(DeprecatedFlyString name, Object& prototype)
 // these good candidates for a bit of code duplication :^)
 
 // 10.3.1 [[Call]] ( thisArgument, argumentsList ), https://tc39.es/ecma262/#sec-built-in-function-objects-call-thisargument-argumentslist
-ThrowCompletionOr<Value> NativeFunction::internal_call(Value this_argument, MarkedVector<Value> arguments_list)
+ThrowCompletionOr<Value> NativeFunction::internal_call(Value this_argument, ReadonlySpan<Value> arguments_list)
 {
     auto& vm = this->vm();
 
@@ -132,7 +132,7 @@ ThrowCompletionOr<Value> NativeFunction::internal_call(Value this_argument, Mark
 
     // 8. Perform any necessary implementation-defined initialization of calleeContext.
     callee_context.this_value = this_argument;
-    callee_context.arguments.extend(move(arguments_list));
+    callee_context.arguments.append(arguments_list.data(), arguments_list.size());
     callee_context.instruction_stream_iterator = vm.bytecode_interpreter().instruction_stream_iterator();
 
     callee_context.lexical_environment = caller_context.lexical_environment;
@@ -160,7 +160,7 @@ ThrowCompletionOr<Value> NativeFunction::internal_call(Value this_argument, Mark
 }
 
 // 10.3.2 [[Construct]] ( argumentsList, newTarget ), https://tc39.es/ecma262/#sec-built-in-function-objects-construct-argumentslist-newtarget
-ThrowCompletionOr<NonnullGCPtr<Object>> NativeFunction::internal_construct(MarkedVector<Value> arguments_list, FunctionObject& new_target)
+ThrowCompletionOr<NonnullGCPtr<Object>> NativeFunction::internal_construct(ReadonlySpan<Value> arguments_list, FunctionObject& new_target)
 {
     auto& vm = this->vm();
 
@@ -195,7 +195,7 @@ ThrowCompletionOr<NonnullGCPtr<Object>> NativeFunction::internal_construct(Marke
     // Note: This is already the default value.
 
     // 8. Perform any necessary implementation-defined initialization of calleeContext.
-    callee_context.arguments.extend(move(arguments_list));
+    callee_context.arguments.append(arguments_list.data(), arguments_list.size());
     callee_context.instruction_stream_iterator = vm.bytecode_interpreter().instruction_stream_iterator();
 
     callee_context.lexical_environment = caller_context.lexical_environment;
diff --git a/Userland/Libraries/LibJS/Runtime/NativeFunction.h b/Userland/Libraries/LibJS/Runtime/NativeFunction.h
index 08073904c7c9..67287ae0bed4 100644
--- a/Userland/Libraries/LibJS/Runtime/NativeFunction.h
+++ b/Userland/Libraries/LibJS/Runtime/NativeFunction.h
@@ -26,8 +26,8 @@ class NativeFunction : public FunctionObject {
 
     virtual ~NativeFunction() override = default;
 
-    virtual ThrowCompletionOr<Value> internal_call(Value this_argument, MarkedVector<Value> arguments_list) override;
-    virtual ThrowCompletionOr<NonnullGCPtr<Object>> internal_construct(MarkedVector<Value> arguments_list, FunctionObject& new_target) override;
+    virtual ThrowCompletionOr<Value> internal_call(Value this_argument, ReadonlySpan<Value> arguments_list) override;
+    virtual ThrowCompletionOr<NonnullGCPtr<Object>> internal_construct(ReadonlySpan<Value> arguments_list, FunctionObject& new_target) override;
 
     // Used for [[Call]] / [[Construct]]'s ""...result of evaluating F in a manner that conforms to the specification of F"".
     // Needs to be overridden by all NativeFunctions without an m_native_function.
diff --git a/Userland/Libraries/LibJS/Runtime/PromiseJobs.cpp b/Userland/Libraries/LibJS/Runtime/PromiseJobs.cpp
index dd32f6c5f362..59b3a0f9fb89 100644
--- a/Userland/Libraries/LibJS/Runtime/PromiseJobs.cpp
+++ b/Userland/Libraries/LibJS/Runtime/PromiseJobs.cpp
@@ -52,9 +52,7 @@ static ThrowCompletionOr<Value> run_reaction_job(VM& vm, PromiseReaction& reacti
     // e. Else, let handlerResult be Completion(HostCallJobCallback(handler, undefined, « argument »)).
     else {
         dbgln_if(PROMISE_DEBUG, ""run_reaction_job: Calling handler callback {} @ {} with argument {}"", handler.value().callback.cell()->class_name(), handler.value().callback.cell(), argument);
-        MarkedVector<Value> arguments(vm.heap());
-        arguments.append(argument);
-        handler_result = vm.host_call_job_callback(handler.value(), js_undefined(), move(arguments));
+        handler_result = vm.host_call_job_callback(handler.value(), js_undefined(), ReadonlySpan<Value> { &argument, 1 });
     }
 
     // f. If promiseCapability is undefined, then
@@ -128,10 +126,10 @@ static ThrowCompletionOr<Value> run_resolve_thenable_job(VM& vm, Promise& promis
 
     // b. Let thenCallResult be Completion(HostCallJobCallback(then, thenable, « resolvingFunctions.[[Resolve]], resolvingFunctions.[[Reject]] »)).
     dbgln_if(PROMISE_DEBUG, ""run_resolve_thenable_job: Calling then job callback for thenable {}"", &thenable);
-    MarkedVector<Value> arguments(vm.heap());
-    arguments.append(Value(resolve_function));
-    arguments.append(Value(reject_function));
-    auto then_call_result = vm.host_call_job_callback(then, thenable, move(arguments));
+    AK::Array<Value, 2> arguments;
+    arguments[0] = Value(resolve_function);
+    arguments[1] = Value(reject_function);
+    auto then_call_result = vm.host_call_job_callback(then, thenable, arguments.span());
 
     // c. If thenCallResult is an abrupt completion, then
     if (then_call_result.is_error()) {
diff --git a/Userland/Libraries/LibJS/Runtime/ProxyObject.cpp b/Userland/Libraries/LibJS/Runtime/ProxyObject.cpp
index 3edfdbae3891..3e14b17cbed9 100644
--- a/Userland/Libraries/LibJS/Runtime/ProxyObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ProxyObject.cpp
@@ -774,7 +774,7 @@ ThrowCompletionOr<MarkedVector<Value>> ProxyObject::internal_own_property_keys()
 }
 
 // 10.5.12 [[Call]] ( thisArgument, argumentsList ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-call-thisargument-argumentslist
-ThrowCompletionOr<Value> ProxyObject::internal_call(Value this_argument, MarkedVector<Value> arguments_list)
+ThrowCompletionOr<Value> ProxyObject::internal_call(Value this_argument, ReadonlySpan<Value> arguments_list)
 {
     auto& vm = this->vm();
     auto& realm = *vm.current_realm();
@@ -797,7 +797,7 @@ ThrowCompletionOr<Value> ProxyObject::internal_call(Value this_argument, MarkedV
     // 6. If trap is undefined, then
     if (!trap) {
         // a. Return ? Call(target, thisArgument, argumentsList).
-        return call(vm, m_target, this_argument, move(arguments_list));
+        return call(vm, m_target, this_argument, arguments_list);
     }
 
     // 7. Let argArray be CreateArrayFromList(argumentsList).
@@ -818,7 +818,7 @@ bool ProxyObject::has_constructor() const
 }
 
 // 10.5.13 [[Construct]] ( argumentsList, newTarget ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-construct-argumentslist-newtarget
-ThrowCompletionOr<NonnullGCPtr<Object>> ProxyObject::internal_construct(MarkedVector<Value> arguments_list, FunctionObject& new_target)
+ThrowCompletionOr<NonnullGCPtr<Object>> ProxyObject::internal_construct(ReadonlySpan<Value> arguments_list, FunctionObject& new_target)
 {
     auto& vm = this->vm();
     auto& realm = *vm.current_realm();
@@ -842,7 +842,7 @@ ThrowCompletionOr<NonnullGCPtr<Object>> ProxyObject::internal_construct(MarkedVe
     // 7. If trap is undefined, then
     if (!trap) {
         // a. Return ? Construct(target, argumentsList, newTarget).
-        return construct(vm, static_cast<FunctionObject&>(*m_target), move(arguments_list), &new_target);
+        return construct(vm, static_cast<FunctionObject&>(*m_target), arguments_list, &new_target);
     }
 
     // 8. Let argArray be CreateArrayFromList(argumentsList).
diff --git a/Userland/Libraries/LibJS/Runtime/ProxyObject.h b/Userland/Libraries/LibJS/Runtime/ProxyObject.h
index c11b318a0da5..462570eadb47 100644
--- a/Userland/Libraries/LibJS/Runtime/ProxyObject.h
+++ b/Userland/Libraries/LibJS/Runtime/ProxyObject.h
@@ -43,8 +43,8 @@ class ProxyObject final : public FunctionObject {
     virtual ThrowCompletionOr<bool> internal_set(PropertyKey const&, Value value, Value receiver, CacheablePropertyMetadata*) override;
     virtual ThrowCompletionOr<bool> internal_delete(PropertyKey const&) override;
     virtual ThrowCompletionOr<MarkedVector<Value>> internal_own_property_keys() const override;
-    virtual ThrowCompletionOr<Value> internal_call(Value this_argument, MarkedVector<Value> arguments_list) override;
-    virtual ThrowCompletionOr<NonnullGCPtr<Object>> internal_construct(MarkedVector<Value> arguments_list, FunctionObject& new_target) override;
+    virtual ThrowCompletionOr<Value> internal_call(Value this_argument, ReadonlySpan<Value> arguments_list) override;
+    virtual ThrowCompletionOr<NonnullGCPtr<Object>> internal_construct(ReadonlySpan<Value> arguments_list, FunctionObject& new_target) override;
 
 private:
     ProxyObject(Object& target, Object& handler, Object& prototype);
diff --git a/Userland/Libraries/LibJS/Runtime/ReflectObject.cpp b/Userland/Libraries/LibJS/Runtime/ReflectObject.cpp
index 32a5b9d12e7b..a4571015dff2 100644
--- a/Userland/Libraries/LibJS/Runtime/ReflectObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ReflectObject.cpp
@@ -61,7 +61,7 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::apply)
 
     // 3. Perform PrepareForTailCall().
     // 4. Return ? Call(target, thisArgument, args).
-    return TRY(call(vm, target.as_function(), this_argument, move(args)));
+    return TRY(call(vm, target.as_function(), this_argument, args.span()));
 }
 
 // 28.1.2 Reflect.construct ( target, argumentsList [ , newTarget ] ), https://tc39.es/ecma262/#sec-reflect.construct
@@ -86,7 +86,7 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::construct)
     auto args = TRY(create_list_from_array_like(vm, arguments_list));
 
     // 5. Return ? Construct(target, args, newTarget).
-    return TRY(JS::construct(vm, target.as_function(), move(args), &new_target.as_function()));
+    return TRY(JS::construct(vm, target.as_function(), args.span(), &new_target.as_function()));
 }
 
 // 28.1.3 Reflect.defineProperty ( target, propertyKey, attributes ), https://tc39.es/ecma262/#sec-reflect.defineproperty
diff --git a/Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp b/Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp
index 210145378466..096e1fb536fb 100644
--- a/Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp
@@ -777,7 +777,7 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::symbol_replace)
             }
 
             // iii. Let replValue be ? Call(replaceValue, undefined, replacerArgs).
-            auto replace_result = TRY(call(vm, replace_value.as_function(), js_undefined(), move(replacer_args)));
+            auto replace_result = TRY(call(vm, replace_value.as_function(), js_undefined(), replacer_args.span()));
 
             // iv. Let replacement be ? ToString(replValue).
             replacement = TRY(replace_result.to_string(vm));
diff --git a/Userland/Libraries/LibJS/Runtime/TypedArray.cpp b/Userland/Libraries/LibJS/Runtime/TypedArray.cpp
index e2c7ffe90a54..ba5153d86af7 100644
--- a/Userland/Libraries/LibJS/Runtime/TypedArray.cpp
+++ b/Userland/Libraries/LibJS/Runtime/TypedArray.cpp
@@ -322,7 +322,7 @@ ThrowCompletionOr<TypedArrayBase*> typed_array_create(VM& vm, FunctionObject& co
     if (!arguments.is_empty())
         first_argument = arguments[0];
     // 1. Let newTypedArray be ? Construct(constructor, argumentList).
-    auto new_typed_array = TRY(construct(vm, constructor, move(arguments)));
+    auto new_typed_array = TRY(construct(vm, constructor, arguments.span()));
 
     // 2. Perform ? ValidateTypedArray(newTypedArray).
     if (!new_typed_array->is_typed_array())
diff --git a/Userland/Libraries/LibJS/Runtime/VM.cpp b/Userland/Libraries/LibJS/Runtime/VM.cpp
index 24b1b4562c53..f7401dc397ef 100644
--- a/Userland/Libraries/LibJS/Runtime/VM.cpp
+++ b/Userland/Libraries/LibJS/Runtime/VM.cpp
@@ -78,8 +78,8 @@ VM::VM(OwnPtr<CustomData> custom_data, ErrorMessages error_messages)
         promise_rejection_tracker(promise, operation);
     };
 
-    host_call_job_callback = [this](JobCallback& job_callback, Value this_value, MarkedVector<Value> arguments) {
-        return call_job_callback(*this, job_callback, this_value, move(arguments));
+    host_call_job_callback = [this](JobCallback& job_callback, Value this_value, ReadonlySpan<Value> arguments) {
+        return call_job_callback(*this, job_callback, this_value, arguments);
     };
 
     host_enqueue_finalization_registry_cleanup_job = [this](FinalizationRegistry& finalization_registry) {
diff --git a/Userland/Libraries/LibJS/Runtime/VM.h b/Userland/Libraries/LibJS/Runtime/VM.h
index 78f0bad1bc98..7b70537a308f 100644
--- a/Userland/Libraries/LibJS/Runtime/VM.h
+++ b/Userland/Libraries/LibJS/Runtime/VM.h
@@ -243,7 +243,7 @@ class VM : public RefCounted<VM> {
     void enable_default_host_import_module_dynamically_hook();
 
     Function<void(Promise&, Promise::RejectionOperation)> host_promise_rejection_tracker;
-    Function<ThrowCompletionOr<Value>(JobCallback&, Value, MarkedVector<Value>)> host_call_job_callback;
+    Function<ThrowCompletionOr<Value>(JobCallback&, Value, ReadonlySpan<Value>)> host_call_job_callback;
     Function<void(FinalizationRegistry&)> host_enqueue_finalization_registry_cleanup_job;
     Function<void(Function<ThrowCompletionOr<Value>()>, Realm*)> host_enqueue_promise_job;
     Function<JobCallback(FunctionObject&)> host_make_job_callback;
diff --git a/Userland/Libraries/LibJS/Runtime/Value.cpp b/Userland/Libraries/LibJS/Runtime/Value.cpp
index 058e58af1415..9198086a583c 100644
--- a/Userland/Libraries/LibJS/Runtime/Value.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Value.cpp
@@ -2505,7 +2505,10 @@ ThrowCompletionOr<Value> Value::invoke_internal(VM& vm, PropertyKey const& prope
     auto function = TRY(get(vm, property_key));
 
     // 3. Return ? Call(func, V, argumentsList).
-    return call(vm, function, *this, move(arguments));
+    ReadonlySpan<Value> argument_list;
+    if (arguments.has_value())
+        argument_list = arguments.value().span();
+    return call(vm, function, *this, argument_list);
 }
 
 }
diff --git a/Userland/Libraries/LibJS/Runtime/WrappedFunction.cpp b/Userland/Libraries/LibJS/Runtime/WrappedFunction.cpp
index 3a2ec747bcc1..d6fd64b6d205 100644
--- a/Userland/Libraries/LibJS/Runtime/WrappedFunction.cpp
+++ b/Userland/Libraries/LibJS/Runtime/WrappedFunction.cpp
@@ -54,7 +54,7 @@ void WrappedFunction::visit_edges(Visitor& visitor)
 }
 
 // 2.1 [[Call]] ( thisArgument, argumentsList ), https://tc39.es/proposal-shadowrealm/#sec-wrapped-function-exotic-objects-call-thisargument-argumentslist
-ThrowCompletionOr<Value> WrappedFunction::internal_call(Value this_argument, MarkedVector<Value> arguments_list)
+ThrowCompletionOr<Value> WrappedFunction::internal_call(Value this_argument, ReadonlySpan<Value> arguments_list)
 {
     auto& vm = this->vm();
 
@@ -82,7 +82,7 @@ ThrowCompletionOr<Value> WrappedFunction::internal_call(Value this_argument, Mar
 }
 
 // 2.2 OrdinaryWrappedFunctionCall ( F: a wrapped function exotic object, thisArgument: an ECMAScript language value, argumentsList: a List of ECMAScript language values, ), https://tc39.es/proposal-shadowrealm/#sec-ordinary-wrapped-function-call
-ThrowCompletionOr<Value> ordinary_wrapped_function_call(WrappedFunction const& function, Value this_argument, MarkedVector<Value> const& arguments_list)
+ThrowCompletionOr<Value> ordinary_wrapped_function_call(WrappedFunction const& function, Value this_argument, ReadonlySpan<Value> arguments_list)
 {
     auto& vm = function.vm();
 
@@ -118,7 +118,7 @@ ThrowCompletionOr<Value> ordinary_wrapped_function_call(WrappedFunction const& f
     auto wrapped_this_argument = TRY(get_wrapped_value(vm, *target_realm, this_argument));
 
     // 9. Let result be the Completion Record of Call(target, wrappedThisArgument, wrappedArgs).
-    auto result = call(vm, &target, wrapped_this_argument, move(wrapped_args));
+    auto result = call(vm, &target, wrapped_this_argument, wrapped_args.span());
 
     // 10. If result.[[Type]] is normal or result.[[Type]] is return, then
     if (!result.is_throw_completion()) {
diff --git a/Userland/Libraries/LibJS/Runtime/WrappedFunction.h b/Userland/Libraries/LibJS/Runtime/WrappedFunction.h
index c7deb252f2ff..e884c515cacd 100644
--- a/Userland/Libraries/LibJS/Runtime/WrappedFunction.h
+++ b/Userland/Libraries/LibJS/Runtime/WrappedFunction.h
@@ -20,7 +20,7 @@ class WrappedFunction final : public FunctionObject {
 
     virtual ~WrappedFunction() = default;
 
-    virtual ThrowCompletionOr<Value> internal_call(Value this_argument, MarkedVector<Value> arguments_list) override;
+    virtual ThrowCompletionOr<Value> internal_call(Value this_argument, ReadonlySpan<Value> arguments_list) override;
 
     // FIXME: Remove this (and stop inventing random internal slots that shouldn't exist, jeez)
     virtual DeprecatedFlyString const& name() const override { return m_wrapped_target_function->name(); }
@@ -40,7 +40,7 @@ class WrappedFunction final : public FunctionObject {
     NonnullGCPtr<Realm> m_realm;                            // [[Realm]]
 };
 
-ThrowCompletionOr<Value> ordinary_wrapped_function_call(WrappedFunction const&, Value this_argument, MarkedVector<Value> const& arguments_list);
+ThrowCompletionOr<Value> ordinary_wrapped_function_call(WrappedFunction const&, Value this_argument, ReadonlySpan<Value> arguments_list);
 void prepare_for_wrapped_function_call(WrappedFunction const&, ExecutionContext& callee_context);
 
 }"
f482628fe549bc456fa3937abed5bcebe3ccd1bc,2021-04-07 01:12:00,Luke,libweb: Strip out the mutation event logic from TreeNode,False,Strip out the mutation event logic from TreeNode,libweb,"diff --git a/Userland/Libraries/LibWeb/TreeNode.h b/Userland/Libraries/LibWeb/TreeNode.h
index c26ec464671f..5494d71c24e7 100644
--- a/Userland/Libraries/LibWeb/TreeNode.h
+++ b/Userland/Libraries/LibWeb/TreeNode.h
@@ -99,10 +99,10 @@ class TreeNode : public Weakable<T> {
 
     bool is_ancestor_of(const TreeNode&) const;
 
+    void append_child(NonnullRefPtr<T> node);
     void prepend_child(NonnullRefPtr<T> node);
-    void append_child(NonnullRefPtr<T> node, bool notify = true);
-    void insert_before(NonnullRefPtr<T> node, RefPtr<T> child, bool notify = true);
-    NonnullRefPtr<T> remove_child(NonnullRefPtr<T> node);
+    void insert_before(NonnullRefPtr<T> node, RefPtr<T> child);
+    void remove_child(NonnullRefPtr<T> node);
 
     void remove_all_children();
 
@@ -332,8 +332,9 @@ inline void TreeNode<T>::remove_all_children()
         remove_child(child.release_nonnull());
 }
 
+
 template<typename T>
-inline NonnullRefPtr<T> TreeNode<T>::remove_child(NonnullRefPtr<T> node)
+inline void TreeNode<T>::remove_child(NonnullRefPtr<T> node)
 {
     VERIFY(node->m_parent == this);
 
@@ -353,17 +354,11 @@ inline NonnullRefPtr<T> TreeNode<T>::remove_child(NonnullRefPtr<T> node)
     node->m_previous_sibling = nullptr;
     node->m_parent = nullptr;
 
-    node->removed_from(static_cast<T&>(*this));
-
     node->unref();
-
-    static_cast<T*>(this)->children_changed();
-
-    return node;
 }
 
 template<typename T>
-inline void TreeNode<T>::append_child(NonnullRefPtr<T> node, bool notify)
+inline void TreeNode<T>::append_child(NonnullRefPtr<T> node)
 {
     VERIFY(!node->m_parent);
 
@@ -377,26 +372,18 @@ inline void TreeNode<T>::append_child(NonnullRefPtr<T> node, bool notify)
     m_last_child = node.ptr();
     if (!m_first_child)
         m_first_child = m_last_child;
-    if (notify)
-        node->inserted_into(static_cast<T&>(*this));
     [[maybe_unused]] auto& rc = node.leak_ref();
-
-    if (notify)
-        static_cast<T*>(this)->children_changed();
 }
 
 template<typename T>
-inline void TreeNode<T>::insert_before(NonnullRefPtr<T> node, RefPtr<T> child, bool notify)
+inline void TreeNode<T>::insert_before(NonnullRefPtr<T> node, RefPtr<T> child)
 {
     if (!child)
-        return append_child(move(node), notify);
+        return append_child(move(node));
 
     VERIFY(!node->m_parent);
     VERIFY(child->parent() == this);
 
-    if (!static_cast<T*>(this)->is_child_allowed(*node))
-        return;
-
     node->m_previous_sibling = child->m_previous_sibling;
     node->m_next_sibling = child;
 
@@ -409,12 +396,7 @@ inline void TreeNode<T>::insert_before(NonnullRefPtr<T> node, RefPtr<T> child, b
     child->m_previous_sibling = node;
 
     node->m_parent = static_cast<T*>(this);
-    if (notify)
-        node->inserted_into(static_cast<T&>(*this));
     [[maybe_unused]] auto& rc = node.leak_ref();
-
-    if (notify)
-        static_cast<T*>(this)->children_changed();
 }
 
 template<typename T>"
0b824ab7a659eda9c325839ec3dcae9542b08e09,2023-10-04 03:29:38,Tim Ledbetter,libgfx: Check bounds of color table access in TinyVGLoader,False,Check bounds of color table access in TinyVGLoader,libgfx,"diff --git a/Userland/Libraries/LibGfx/ImageFormats/TinyVGLoader.cpp b/Userland/Libraries/LibGfx/ImageFormats/TinyVGLoader.cpp
index d482648faf7e..cff49dac2a71 100644
--- a/Userland/Libraries/LibGfx/ImageFormats/TinyVGLoader.cpp
+++ b/Userland/Libraries/LibGfx/ImageFormats/TinyVGLoader.cpp
@@ -205,6 +205,9 @@ class TinyVGReader {
     {
         auto read_color = [&]() -> ErrorOr<Color> {
             auto color_index = TRY(m_stream.read_value<VarUInt>());
+            if (color_index >= m_color_table.size())
+                return Error::from_string_literal(""Invalid color table index"");
+
             return m_color_table[color_index];
         };
         auto read_gradient = [&]() -> ErrorOr<NonnullRefPtr<SVGGradientPaintStyle>> {"
affb4ef01bcd3b8ac316c95738fb5baaf6b17963,2021-01-28 23:22:59,Tom,kernel: Allow specifying a physical alignment when allocating,False,Allow specifying a physical alignment when allocating,kernel,"diff --git a/Kernel/VM/ContiguousVMObject.cpp b/Kernel/VM/ContiguousVMObject.cpp
index e084f7d69d12..d4f09d3c3c52 100644
--- a/Kernel/VM/ContiguousVMObject.cpp
+++ b/Kernel/VM/ContiguousVMObject.cpp
@@ -31,15 +31,15 @@
 
 namespace Kernel {
 
-NonnullRefPtr<ContiguousVMObject> ContiguousVMObject::create_with_size(size_t size)
+NonnullRefPtr<ContiguousVMObject> ContiguousVMObject::create_with_size(size_t size, size_t physical_alignment)
 {
-    return adopt(*new ContiguousVMObject(size));
+    return adopt(*new ContiguousVMObject(size, physical_alignment));
 }
 
-ContiguousVMObject::ContiguousVMObject(size_t size)
+ContiguousVMObject::ContiguousVMObject(size_t size, size_t physical_alignment)
     : VMObject(size)
 {
-    auto contiguous_physical_pages = MM.allocate_contiguous_supervisor_physical_pages(size);
+    auto contiguous_physical_pages = MM.allocate_contiguous_supervisor_physical_pages(size, physical_alignment);
     for (size_t i = 0; i < page_count(); i++) {
         physical_pages()[i] = contiguous_physical_pages[i];
         dbgln<CONTIGUOUS_VMOBJECT_DEBUG>(""Contiguous page[{}]: {}"", i, physical_pages()[i]->paddr());
diff --git a/Kernel/VM/ContiguousVMObject.h b/Kernel/VM/ContiguousVMObject.h
index 3c273b6e7ba0..0cac59d26994 100644
--- a/Kernel/VM/ContiguousVMObject.h
+++ b/Kernel/VM/ContiguousVMObject.h
@@ -35,10 +35,10 @@ class ContiguousVMObject final : public VMObject {
 public:
     virtual ~ContiguousVMObject() override;
 
-    static NonnullRefPtr<ContiguousVMObject> create_with_size(size_t);
+    static NonnullRefPtr<ContiguousVMObject> create_with_size(size_t, size_t physical_alignment = PAGE_SIZE);
 
 private:
-    explicit ContiguousVMObject(size_t);
+    explicit ContiguousVMObject(size_t, size_t physical_alignment);
     explicit ContiguousVMObject(const ContiguousVMObject&);
 
     virtual const char* class_name() const override { return ""ContiguousVMObject""; }
diff --git a/Kernel/VM/MemoryManager.cpp b/Kernel/VM/MemoryManager.cpp
index d0d427c5fba6..5a7c1687d6f9 100644
--- a/Kernel/VM/MemoryManager.cpp
+++ b/Kernel/VM/MemoryManager.cpp
@@ -394,14 +394,14 @@ PageFaultResponse MemoryManager::handle_page_fault(const PageFault& fault)
     return region->handle_fault(fault, lock);
 }
 
-OwnPtr<Region> MemoryManager::allocate_contiguous_kernel_region(size_t size, const StringView& name, u8 access, bool user_accessible, bool cacheable)
+OwnPtr<Region> MemoryManager::allocate_contiguous_kernel_region(size_t size, const StringView& name, u8 access, size_t physical_alignment, bool user_accessible, bool cacheable)
 {
     ASSERT(!(size % PAGE_SIZE));
     ScopedSpinLock lock(s_mm_lock);
     auto range = kernel_page_directory().range_allocator().allocate_anywhere(size);
     if (!range.has_value())
         return {};
-    auto vmobject = ContiguousVMObject::create_with_size(size);
+    auto vmobject = ContiguousVMObject::create_with_size(size, physical_alignment);
     return allocate_kernel_region_with_vmobject(range.value(), vmobject, name, access, user_accessible, cacheable);
 }
 
@@ -610,7 +610,7 @@ void MemoryManager::deallocate_supervisor_physical_page(const PhysicalPage& page
     ASSERT_NOT_REACHED();
 }
 
-NonnullRefPtrVector<PhysicalPage> MemoryManager::allocate_contiguous_supervisor_physical_pages(size_t size)
+NonnullRefPtrVector<PhysicalPage> MemoryManager::allocate_contiguous_supervisor_physical_pages(size_t size, size_t physical_alignment)
 {
     ASSERT(!(size % PAGE_SIZE));
     ScopedSpinLock lock(s_mm_lock);
@@ -618,9 +618,9 @@ NonnullRefPtrVector<PhysicalPage> MemoryManager::allocate_contiguous_supervisor_
     NonnullRefPtrVector<PhysicalPage> physical_pages;
 
     for (auto& region : m_super_physical_regions) {
-        physical_pages = region.take_contiguous_free_pages((count), true);
+        physical_pages = region.take_contiguous_free_pages(count, true, physical_alignment);
         if (!physical_pages.is_empty())
-            break;
+            continue;
     }
 
     if (physical_pages.is_empty()) {
diff --git a/Kernel/VM/MemoryManager.h b/Kernel/VM/MemoryManager.h
index 1afd405a37aa..efe338cee5c6 100644
--- a/Kernel/VM/MemoryManager.h
+++ b/Kernel/VM/MemoryManager.h
@@ -137,11 +137,11 @@ class MemoryManager {
     NonnullRefPtr<PhysicalPage> allocate_committed_user_physical_page(ShouldZeroFill = ShouldZeroFill::Yes);
     RefPtr<PhysicalPage> allocate_user_physical_page(ShouldZeroFill = ShouldZeroFill::Yes, bool* did_purge = nullptr);
     RefPtr<PhysicalPage> allocate_supervisor_physical_page();
-    NonnullRefPtrVector<PhysicalPage> allocate_contiguous_supervisor_physical_pages(size_t size);
+    NonnullRefPtrVector<PhysicalPage> allocate_contiguous_supervisor_physical_pages(size_t size, size_t physical_alignment = PAGE_SIZE);
     void deallocate_user_physical_page(const PhysicalPage&);
     void deallocate_supervisor_physical_page(const PhysicalPage&);
 
-    OwnPtr<Region> allocate_contiguous_kernel_region(size_t, const StringView& name, u8 access, bool user_accessible = false, bool cacheable = true);
+    OwnPtr<Region> allocate_contiguous_kernel_region(size_t, const StringView& name, u8 access, size_t physical_alignment = PAGE_SIZE, bool user_accessible = false, bool cacheable = true);
     OwnPtr<Region> allocate_kernel_region(size_t, const StringView& name, u8 access, bool user_accessible = false, AllocationStrategy strategy = AllocationStrategy::Reserve, bool cacheable = true);
     OwnPtr<Region> allocate_kernel_region(PhysicalAddress, size_t, const StringView& name, u8 access, bool user_accessible = false, bool cacheable = true);
     OwnPtr<Region> allocate_kernel_region_identity(PhysicalAddress, size_t, const StringView& name, u8 access, bool user_accessible = false, bool cacheable = true);
diff --git a/Kernel/VM/PhysicalRegion.cpp b/Kernel/VM/PhysicalRegion.cpp
index c5aeef81b211..0df7cd4049c2 100644
--- a/Kernel/VM/PhysicalRegion.cpp
+++ b/Kernel/VM/PhysicalRegion.cpp
@@ -65,7 +65,7 @@ unsigned PhysicalRegion::finalize_capacity()
     return size();
 }
 
-NonnullRefPtrVector<PhysicalPage> PhysicalRegion::take_contiguous_free_pages(size_t count, bool supervisor)
+NonnullRefPtrVector<PhysicalPage> PhysicalRegion::take_contiguous_free_pages(size_t count, bool supervisor, size_t physical_alignment)
 {
     ASSERT(m_pages);
     ASSERT(m_used != m_pages);
@@ -73,18 +73,19 @@ NonnullRefPtrVector<PhysicalPage> PhysicalRegion::take_contiguous_free_pages(siz
     NonnullRefPtrVector<PhysicalPage> physical_pages;
     physical_pages.ensure_capacity(count);
 
-    auto first_contiguous_page = find_contiguous_free_pages(count);
+    auto first_contiguous_page = find_contiguous_free_pages(count, physical_alignment);
 
     for (size_t index = 0; index < count; index++)
         physical_pages.append(PhysicalPage::create(m_lower.offset(PAGE_SIZE * (index + first_contiguous_page)), supervisor));
     return physical_pages;
 }
 
-unsigned PhysicalRegion::find_contiguous_free_pages(size_t count)
+unsigned PhysicalRegion::find_contiguous_free_pages(size_t count, size_t physical_alignment)
 {
     ASSERT(count != 0);
+    ASSERT(physical_alignment % PAGE_SIZE == 0);
     // search from the last page we allocated
-    auto range = find_and_allocate_contiguous_range(count);
+    auto range = find_and_allocate_contiguous_range(count, physical_alignment / PAGE_SIZE);
     ASSERT(range.has_value());
     return range.value();
 }
@@ -118,16 +119,21 @@ Optional<unsigned> PhysicalRegion::find_one_free_page()
     return page_index;
 }
 
-Optional<unsigned> PhysicalRegion::find_and_allocate_contiguous_range(size_t count)
+Optional<unsigned> PhysicalRegion::find_and_allocate_contiguous_range(size_t count, unsigned alignment)
 {
     ASSERT(count != 0);
     size_t found_pages_count = 0;
-    auto first_index = m_bitmap.find_longest_range_of_unset_bits(count, found_pages_count);
+    // TODO: Improve how we deal with alignment != 1
+    auto first_index = m_bitmap.find_longest_range_of_unset_bits(count + alignment - 1, found_pages_count);
     if (!first_index.has_value())
         return {};
 
     auto page = first_index.value();
-    if (count == found_pages_count) {
+    if (alignment != 1) {
+        auto lower_page = m_lower.get() / PAGE_SIZE;
+        page = ((lower_page + page + alignment - 1) & ~(alignment - 1)) - lower_page;
+    }
+    if (found_pages_count >= count) {
         m_bitmap.set_range<true>(page, count);
         m_used += count;
         m_free_hint = first_index.value() + count + 1; // Just a guess
diff --git a/Kernel/VM/PhysicalRegion.h b/Kernel/VM/PhysicalRegion.h
index 4997b3049912..436ee6cce32d 100644
--- a/Kernel/VM/PhysicalRegion.h
+++ b/Kernel/VM/PhysicalRegion.h
@@ -52,12 +52,12 @@ class PhysicalRegion : public RefCounted<PhysicalRegion> {
     bool contains(const PhysicalPage& page) const { return page.paddr() >= m_lower && page.paddr() <= m_upper; }
 
     RefPtr<PhysicalPage> take_free_page(bool supervisor);
-    NonnullRefPtrVector<PhysicalPage> take_contiguous_free_pages(size_t count, bool supervisor);
+    NonnullRefPtrVector<PhysicalPage> take_contiguous_free_pages(size_t count, bool supervisor, size_t physical_alignment = PAGE_SIZE);
     void return_page(const PhysicalPage& page);
 
 private:
-    unsigned find_contiguous_free_pages(size_t count);
-    Optional<unsigned> find_and_allocate_contiguous_range(size_t count);
+    unsigned find_contiguous_free_pages(size_t count, size_t physical_alignment = PAGE_SIZE);
+    Optional<unsigned> find_and_allocate_contiguous_range(size_t count, unsigned alignment = 1);
     Optional<unsigned> find_one_free_page();
     void free_page_at(PhysicalAddress addr);"
a13f2b7df34f890911e6e3044a55984af139b4f0,2021-03-09 11:58:06,Mițca Dumitru,libc: Add defines to float.h,False,Add defines to float.h,libc,"diff --git a/Userland/Libraries/LibC/float.h b/Userland/Libraries/LibC/float.h
index 2bf8abd09977..6b0d383580d4 100644
--- a/Userland/Libraries/LibC/float.h
+++ b/Userland/Libraries/LibC/float.h
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021, Mițca Dumitru <dumitru0mitca@gmail.com>
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -25,3 +26,47 @@
  */
 
 #pragma once
+
+#include <fenv.h>
+
+#define FLT_RADIX 2
+#define DECIMAL_DIG 21
+#define FLT_DECIMAL_DIG 9
+#define DBL_DECIMAL_DIG 17
+#define LDBL_DECIMAL_DIG 21
+#define FLT_MIN 1.17549e-38
+#define DBL_MIN 2.22507e-308
+#define LDBL_MIN 3.3621e-4932
+#define FLT_TRUE_MIN 1.4013e-45
+#define DBL_TRUE_MIN 4.94066e-324
+#define LDBL_TRUE_MIN 3.6452e-4951
+#define FLT_MAX 3.40282e+38
+#define DBL_MAX 1.79769e+308
+#define LDBL_MAX 1.18973e+4932
+#define FLT_EPSILON 1.19209e-07
+#define DBL_EPSILON 2.22045e-16
+#define LDBL_EPSILON 1.0842e-19
+#define FLT_DIG 6
+#define DBL_DIG 15
+#define LDBL_DIG 18
+#define FLT_MANT_DIG 24
+#define DBL_MANT_DIG 53
+#define LDBL_MANT_DIG 64
+#define FLT_MIN_EXP -125
+#define DBL_MIN_EXP -1021
+#define LDBL_MIN_EXP -16381
+#define FLT_MIN_10_EXP -37
+#define DBL_MIN_10_EXP -307
+#define LDBL_MIN_10_EXP -4931
+#define FLT_MAX_EXP 128
+#define DBL_MAX_EXP 1024
+#define LDBL_MAX_EXP 16384
+#define FLT_MAX_10_EXP 38
+#define DBL_MAX_10_EXP 308
+#define LDBL_MAX_10_EXP 4932
+
+#define FLT_ROUNDS (fegetround()) // Note: this not might be true for non-x86 platforms
+
+#define FLT_HAS_SUBNORM 1
+#define DBL_HAS_SUBNORM 1
+#define LDBL_HAS_SUBNORM 1"
8e1af483bed41e49632e9ff88fbed46e0e16b12f,2020-12-24 01:21:29,Lenny Maiorani,cmake: Remove file globbing in AK/Tests,False,Remove file globbing in AK/Tests,cmake,"diff --git a/AK/Tests/CMakeLists.txt b/AK/Tests/CMakeLists.txt
index 07f9fc4f0fcf..675e2a4b64f3 100644
--- a/AK/Tests/CMakeLists.txt
+++ b/AK/Tests/CMakeLists.txt
@@ -1,4 +1,44 @@
-file(GLOB AK_TEST_SOURCES CONFIGURE_DEPENDS ""*.cpp"")
+set(AK_TEST_SOURCES
+    TestAllOf.cpp
+    TestArray.cpp
+    TestAtomic.cpp
+    TestBase64.cpp
+    TestBinarySearch.cpp
+    TestBitmap.cpp
+    TestByteBuffer.cpp
+    TestChecked.cpp
+    TestCircularDeque.cpp
+    TestCircularDuplexStream.cpp
+    TestCircularQueue.cpp
+    TestDistinctNumeric.cpp
+    TestEndian.cpp
+    TestFormat.cpp
+    TestHashFunctions.cpp
+    TestHashMap.cpp
+    TestIPv4Address.cpp
+    TestJSON.cpp
+    TestLexicalPath.cpp
+    TestMACAddress.cpp
+    TestMemMem.cpp
+    TestMemoryStream.cpp
+    TestNeverDestroyed.cpp
+    TestNonnullRefPtr.cpp
+    TestNumberFormat.cpp
+    TestOptional.cpp
+    TestQueue.cpp
+    TestQuickSort.cpp
+    TestRefPtr.cpp
+    TestSourceGenerator.cpp
+    TestSpan.cpp
+    TestString.cpp
+    TestStringUtils.cpp
+    TestStringView.cpp
+    TestTypedTransfer.cpp
+    TestURL.cpp
+    TestUtf8.cpp
+    TestVector.cpp
+    TestWeakPtr.cpp
+)
 
 foreach(source ${AK_TEST_SOURCES})
     get_filename_component(name ${source} NAME_WE)"
bc7b0a8986aa56a02ed2b13b6f70169961506b23,2021-09-11 01:28:08,Idan Horowitz,kernel: Replace inline assembly for turning on IA32_EFER.NXE with MSR,False,Replace inline assembly for turning on IA32_EFER.NXE with MSR,kernel,"diff --git a/Kernel/Arch/x86/Processor.h b/Kernel/Arch/x86/Processor.h
index 9ac15711a84a..1d9132820786 100644
--- a/Kernel/Arch/x86/Processor.h
+++ b/Kernel/Arch/x86/Processor.h
@@ -32,6 +32,7 @@ enum class ProcessorSpecificDataID {
 #    define MSR_FS_BASE 0xc0000100
 #    define MSR_GS_BASE 0xc0000101
 #endif
+#define MSR_IA32_EFER 0xc0000080
 
 // FIXME: Find a better place for these
 extern ""C"" void thread_context_first_enter(void);
diff --git a/Kernel/Arch/x86/common/Processor.cpp b/Kernel/Arch/x86/common/Processor.cpp
index 094f3fdc577d..a6f25e257e20 100644
--- a/Kernel/Arch/x86/common/Processor.cpp
+++ b/Kernel/Arch/x86/common/Processor.cpp
@@ -177,11 +177,8 @@ UNMAP_AFTER_INIT void Processor::cpu_setup()
 
     if (has_feature(CPUFeature::NX)) {
         // Turn on IA32_EFER.NXE
-        asm volatile(
-            ""movl $0xc0000080, %ecx\n""
-            ""rdmsr\n""
-            ""orl $0x800, %eax\n""
-            ""wrmsr\n"");
+        MSR ia32_efer(MSR_IA32_EFER);
+        ia32_efer.set(ia32_efer.get() | 0x800);
     }
 
     if (has_feature(CPUFeature::SMEP)) {"
9aa556fdf07acf4e5cf2bb3e8d353ede513ef143,2022-01-09 17:56:16,Federico Guerinoni,userland: Port wasm to LibMain,False,Port wasm to LibMain,userland,"diff --git a/Meta/Lagom/CMakeLists.txt b/Meta/Lagom/CMakeLists.txt
index 13680bdcc11a..ed9581ac8489 100644
--- a/Meta/Lagom/CMakeLists.txt
+++ b/Meta/Lagom/CMakeLists.txt
@@ -502,7 +502,7 @@ if (BUILD_LAGOM)
 
         add_executable(wasm_lagom ../../Userland/Utilities/wasm.cpp)
         set_target_properties(wasm_lagom PROPERTIES OUTPUT_NAME wasm)
-        target_link_libraries(wasm_lagom LagomCore LagomWasm LagomLine)
+        target_link_libraries(wasm_lagom LagomCore LagomWasm LagomLine LagomMain)
 
         enable_testing()
         # LibTest
diff --git a/Userland/Utilities/CMakeLists.txt b/Userland/Utilities/CMakeLists.txt
index 0fef54cc5413..589fcad5a2df 100644
--- a/Userland/Utilities/CMakeLists.txt
+++ b/Userland/Utilities/CMakeLists.txt
@@ -160,7 +160,7 @@ target_link_libraries(userdel LibMain)
 target_link_libraries(usermod LibMain)
 target_link_libraries(utmpupdate LibMain)
 target_link_libraries(w LibMain)
-target_link_libraries(wasm LibWasm LibLine)
+target_link_libraries(wasm LibMain LibWasm LibLine)
 target_link_libraries(watch LibMain)
 target_link_libraries(wc LibMain)
 target_link_libraries(which LibMain)
diff --git a/Userland/Utilities/wasm.cpp b/Userland/Utilities/wasm.cpp
index a7553e37aea9..dedaca166d61 100644
--- a/Userland/Utilities/wasm.cpp
+++ b/Userland/Utilities/wasm.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2021, Ali Mohammad Pur <mpfard@serenityos.org>
+ * Copyright (c) 2022, the SerenityOS developers.
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -8,6 +9,7 @@
 #include <LibCore/File.h>
 #include <LibCore/FileStream.h>
 #include <LibLine/Editor.h>
+#include <LibMain/Main.h>
 #include <LibWasm/AbstractMachine/AbstractMachine.h>
 #include <LibWasm/AbstractMachine/BytecodeInterpreter.h>
 #include <LibWasm/Printer/Printer.h>
@@ -265,7 +267,7 @@ static void print_link_error(Wasm::LinkError const& error)
         warnln(""Missing import '{}'"", missing);
 }
 
-int main(int argc, char* argv[])
+ErrorOr<int> serenity_main(Main::Arguments arguments)
 {
     char const* filename = nullptr;
     bool print = false;
@@ -313,7 +315,7 @@ int main(int argc, char* argv[])
             return false;
         },
     });
-    parser.parse(argc, argv);
+    parser.parse(arguments);
 
     if (shell_mode) {
         debug = true;"
b0af53749db6407bb96df1d2e943aa09d02b455a,2022-12-10 18:33:46,Tim Schumacher,meta: Switch to the Lagom directory before building fuzzers,False,Switch to the Lagom directory before building fuzzers,meta,"diff --git a/Meta/Lagom/BuildFuzzers.sh b/Meta/Lagom/BuildFuzzers.sh
index 9b83b68f1fcc..7f005563facf 100755
--- a/Meta/Lagom/BuildFuzzers.sh
+++ b/Meta/Lagom/BuildFuzzers.sh
@@ -2,6 +2,9 @@
 
 set -e
 
+SCRIPT_PATH=""$(dirname ""${0}"")""
+cd ""${SCRIPT_PATH}""
+
 BEST_CLANG_CANDIDATE=""""
 
 die() {"
0652d159cf0d5ddfcb5b94c4000cb4f6889e2e22,2024-03-25 12:44:13,Aliaksandr Kalenik,"libweb: Add a test for mouse{over,out,enter,leave} events",False,"Add a test for mouse{over,out,enter,leave} events",libweb,"diff --git a/Tests/LibWeb/Text/expected/UIEvents/mouse-events.txt b/Tests/LibWeb/Text/expected/UIEvents/mouse-events.txt
new file mode 100644
index 000000000000..7930ea309729
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/UIEvents/mouse-events.txt
@@ -0,0 +1,13 @@
+   > move pointer over #inner
+mouseover target.id=(inner) currentTarget.id=(inner)
+mouseover target.id=(inner) currentTarget.id=(outer)
+mouseenter target.id=(inner) currentTarget.id=(inner)
+mouseenter target.id=(outer) currentTarget.id=(outer)
+> move pointer over #outer
+mouseout target.id=(inner) currentTarget.id=(inner)
+mouseout target.id=(inner) currentTarget.id=(outer)
+mouseleave target.id=(inner) currentTarget.id=(inner)
+mouseover target.id=(outer) currentTarget.id=(outer)
+> click document.body
+mouseout target.id=(outer) currentTarget.id=(outer)
+mouseleave target.id=(outer) currentTarget.id=(outer)
diff --git a/Tests/LibWeb/Text/input/UIEvents/mouse-events.html b/Tests/LibWeb/Text/input/UIEvents/mouse-events.html
new file mode 100644
index 000000000000..ad8c533bc813
--- /dev/null
+++ b/Tests/LibWeb/Text/input/UIEvents/mouse-events.html
@@ -0,0 +1,62 @@
+<!DOCTYPE html>
+<style>
+body {
+    margin: 0px;
+    padding: 5px;
+}
+
+#outer {
+    width: 100px;
+    height: 100px;
+    background-color: yellowgreen;
+}
+
+#inner {
+    width: 50px;
+    height: 50px;
+    background-color: magenta;
+}
+</style>
+<div id=""outer""><div id=""inner""></div></div>
+<script src=""../include.js""></script>
+<script>
+function handleMouseOver(e) {
+    println(`mouseover target.id=(${e.target.id}) currentTarget.id=(${e.currentTarget.id})`);
+}
+function handleMouseOut(e) {
+    println(`mouseout target.id=(${e.target.id}) currentTarget.id=(${e.currentTarget.id})`);
+}
+function handleMouseEnter(e) {
+    println(`mouseenter target.id=(${e.target.id}) currentTarget.id=(${e.currentTarget.id})`);
+}
+function handleMouseLeave(e) {
+    println(`mouseleave target.id=(${e.target.id}) currentTarget.id=(${e.currentTarget.id})`);
+}
+
+outer.onmouseover = handleMouseOver;
+outer.onmouseout = handleMouseOut;
+outer.onmouseenter = handleMouseEnter;
+outer.onmouseleave = handleMouseLeave;
+
+inner.onmouseover = handleMouseOver;
+inner.onmouseout = handleMouseOut;
+inner.onmouseenter = handleMouseEnter;
+inner.onmouseleave = handleMouseLeave;
+
+const clickOnBody = () => {
+    return new Promise(resolve => {
+        document.body.onclick = () => { resolve(); };
+        internals.click(1, 1);
+    });
+}
+
+asyncTest(async done => {
+    println(""> move pointer over #inner"");
+    internals.movePointerTo(10, 10);
+    println(""> move pointer over #outer"");
+    internals.movePointerTo(60, 60);
+    println(""> click document.body"");
+    await clickOnBody();
+    done();
+});
+</script>
diff --git a/Userland/Libraries/LibWeb/Internals/Internals.cpp b/Userland/Libraries/LibWeb/Internals/Internals.cpp
index 523d21f743fe..9c06cff7f60e 100644
--- a/Userland/Libraries/LibWeb/Internals/Internals.cpp
+++ b/Userland/Libraries/LibWeb/Internals/Internals.cpp
@@ -83,6 +83,12 @@ void Internals::click(double x, double y)
     page.handle_mouseup({ x, y }, { x, y }, 1, 0, 0);
 }
 
+void Internals::move_pointer_to(double x, double y)
+{
+    auto& page = global_object().browsing_context()->page();
+    page.handle_mousemove({ x, y }, { x, y }, 0, 0);
+}
+
 void Internals::wheel(double x, double y, double delta_x, double delta_y)
 {
     auto& page = global_object().browsing_context()->page();
diff --git a/Userland/Libraries/LibWeb/Internals/Internals.h b/Userland/Libraries/LibWeb/Internals/Internals.h
index 3ebe5d19c9e3..e26e6ac6e513 100644
--- a/Userland/Libraries/LibWeb/Internals/Internals.h
+++ b/Userland/Libraries/LibWeb/Internals/Internals.h
@@ -26,6 +26,7 @@ class Internals final : public Bindings::PlatformObject {
     void commit_text();
 
     void click(double x, double y);
+    void move_pointer_to(double x, double y);
     void wheel(double x, double y, double delta_x, double delta_y);
 
     WebIDL::ExceptionOr<bool> dispatch_user_activated_event(DOM::EventTarget&, DOM::Event& event);
diff --git a/Userland/Libraries/LibWeb/Internals/Internals.idl b/Userland/Libraries/LibWeb/Internals/Internals.idl
index c3d13f3c0f66..9b8fb18b50aa 100644
--- a/Userland/Libraries/LibWeb/Internals/Internals.idl
+++ b/Userland/Libraries/LibWeb/Internals/Internals.idl
@@ -11,6 +11,7 @@
     undefined commitText();
 
     undefined click(double x, double y);
+    undefined movePointerTo(double x, double y);
     undefined wheel(double x, double y, double deltaX, double deltaY);
 
     boolean dispatchUserActivatedEvent(EventTarget target, Event event);"
a5455ac12199b30858f8ab0b161300e30bff7d47,2024-12-26 21:53:10,Timothy Flynn,libjs: Ensure a function follows an `async` identifier in objects,False,Ensure a function follows an `async` identifier in objects,libjs,"diff --git a/Libraries/LibJS/Parser.cpp b/Libraries/LibJS/Parser.cpp
index bed169e778b1..b2e592135898 100644
--- a/Libraries/LibJS/Parser.cpp
+++ b/Libraries/LibJS/Parser.cpp
@@ -2025,6 +2025,7 @@ NonnullRefPtr<ObjectExpression const> Parser::parse_object_expression()
                 function_kind = FunctionKind::Async;
             }
         }
+
         if (match(TokenType::Asterisk)) {
             consume();
             property_type = ObjectProperty::Type::KeyValue;
@@ -2058,6 +2059,7 @@ NonnullRefPtr<ObjectExpression const> Parser::parse_object_expression()
                 continue;
             }
         }
+
         if (match(TokenType::Equals)) {
             // Not a valid object literal, but a valid assignment target
             consume();
@@ -2078,6 +2080,11 @@ NonnullRefPtr<ObjectExpression const> Parser::parse_object_expression()
                 parse_options |= FunctionNodeParseOptions::IsAsyncFunction;
             auto function = parse_function_node<FunctionExpression>(parse_options, function_start);
             properties.append(create_ast_node<ObjectProperty>({ m_source_code, rule_start.position(), position() }, *property_key, function, property_type, true));
+        } else if (function_kind == FunctionKind::Async) {
+            // If we previously parsed an `async` keyword, then a function must follow.
+            syntax_error(""Expected function after async keyword"");
+            skip_to_next_property();
+            continue;
         } else if (match(TokenType::Colon)) {
             if (!property_key) {
                 expected(""a property name"");
diff --git a/Libraries/LibJS/Tests/object-basic.js b/Libraries/LibJS/Tests/object-basic.js
index a81908a82f3c..01e7b369557c 100644
--- a/Libraries/LibJS/Tests/object-basic.js
+++ b/Libraries/LibJS/Tests/object-basic.js
@@ -205,6 +205,14 @@ describe(""shorthanded properties with special names"", () => {
         expect('""use strict""; var await = 8; ({ await, })').toEval();
         expect('""use strict""; var async = 7; ({ async, })').toEval();
     });
+
+    test(""async functions as properties"", () => {
+        expect(""({ async foo });"").not.toEval();
+        expect(""({ async foo, });"").not.toEval();
+        expect(""({ async foo() });"").not.toEval();
+        expect(""({ async foo: 0 });"").not.toEval();
+        expect(""({ async foo = 0 });"").not.toEval();
+    });
 });
 
 describe(""errors"", () => {"
285a4165f39078db5d52645c2dc5d0861c4f38ac,2020-06-06 20:06:18,Andreas Kling,libweb: Add Node notifications for Document<=>Frame attach/detach,False,Add Node notifications for Document<=>Frame attach/detach,libweb,"diff --git a/Libraries/LibWeb/DOM/Document.cpp b/Libraries/LibWeb/DOM/Document.cpp
index 529be4f88ed0..74e979c35094 100644
--- a/Libraries/LibWeb/DOM/Document.cpp
+++ b/Libraries/LibWeb/DOM/Document.cpp
@@ -161,11 +161,19 @@ String Document::title() const
 void Document::attach_to_frame(Badge<Frame>, Frame& frame)
 {
     m_frame = frame.make_weak_ptr();
+    for_each_in_subtree([&](auto& node) {
+        node.document_did_attach_to_frame(frame);
+        return IterationDecision::Continue;
+    });
     layout();
 }
 
-void Document::detach_from_frame(Badge<Frame>, Frame&)
+void Document::detach_from_frame(Badge<Frame>, Frame& frame)
 {
+    for_each_in_subtree([&](auto& node) {
+        node.document_will_detach_from_frame(frame);
+        return IterationDecision::Continue;
+    });
     m_layout_root = nullptr;
     m_frame = nullptr;
 }
diff --git a/Libraries/LibWeb/DOM/Node.h b/Libraries/LibWeb/DOM/Node.h
index 771a87f78dc5..ce1f9e23e075 100644
--- a/Libraries/LibWeb/DOM/Node.h
+++ b/Libraries/LibWeb/DOM/Node.h
@@ -128,6 +128,9 @@ class Node
 
     bool is_link() const;
 
+    virtual void document_did_attach_to_frame(Frame&) {}
+    virtual void document_will_detach_from_frame(Frame&) {}
+
 protected:
     Node(Document&, NodeType);"
88d342d007579c219fc1ac6748057316f4e93163,2021-03-09 11:58:06,Mițca Dumitru,libm: Implement the frexp family,False,Implement the frexp family,libm,"diff --git a/Userland/Libraries/LibM/math.cpp b/Userland/Libraries/LibM/math.cpp
index da0e6d3c113a..e0cd0a8a1a61 100644
--- a/Userland/Libraries/LibM/math.cpp
+++ b/Userland/Libraries/LibM/math.cpp
@@ -663,22 +663,22 @@ long double log2l(long double x) NOEXCEPT
     return log2(x);
 }
 
-double frexp(double, int*) NOEXCEPT
+double frexp(double x, int* exp) NOEXCEPT
 {
-    VERIFY_NOT_REACHED();
-    return 0;
+    *exp = (x == 0) ? 0 : (1 + ilogb(x));
+    return scalbn(x, -(*exp));
 }
 
-float frexpf(float, int*) NOEXCEPT
+float frexpf(float x, int* exp) NOEXCEPT
 {
-    VERIFY_NOT_REACHED();
-    return 0;
+    *exp = (x == 0) ? 0 : (1 + ilogbf(x));
+    return scalbnf(x, -(*exp));
 }
 
-long double frexpl(long double, int*) NOEXCEPT
+long double frexpl(long double x, int* exp) NOEXCEPT
 {
-    VERIFY_NOT_REACHED();
-    return 0;
+    *exp = (x == 0) ? 0 : (1 + ilogbl(x));
+    return scalbnl(x, -(*exp));
 }
 
 double round(double value) NOEXCEPT"
d8f92bdf96afa7656851ee87b2f7d764664db9c0,2021-05-01 02:41:56,Gunnar Beutner,kernel: Avoid deadlock when trying to send packets from the NetworkTask,False,Avoid deadlock when trying to send packets from the NetworkTask,kernel,"diff --git a/Kernel/Net/NetworkTask.cpp b/Kernel/Net/NetworkTask.cpp
index 4ab97a198266..7757fb040f41 100644
--- a/Kernel/Net/NetworkTask.cpp
+++ b/Kernel/Net/NetworkTask.cpp
@@ -29,12 +29,20 @@ static void handle_icmp(const EthernetFrameHeader&, const IPv4Packet&, const Tim
 static void handle_udp(const IPv4Packet&, const Time& packet_timestamp);
 static void handle_tcp(const IPv4Packet&, const Time& packet_timestamp);
 
+static Thread* network_task = nullptr;
+
 [[noreturn]] static void NetworkTask_main(void*);
 
 void NetworkTask::spawn()
 {
     RefPtr<Thread> thread;
     Process::create_kernel_process(thread, ""NetworkTask"", NetworkTask_main, nullptr);
+    network_task = thread;
+}
+
+bool NetworkTask::is_current()
+{
+    return Thread::current() == network_task;
 }
 
 void NetworkTask_main(void*)
diff --git a/Kernel/Net/NetworkTask.h b/Kernel/Net/NetworkTask.h
index eea9508c235c..821c85b4308f 100644
--- a/Kernel/Net/NetworkTask.h
+++ b/Kernel/Net/NetworkTask.h
@@ -10,5 +10,6 @@ namespace Kernel {
 class NetworkTask {
 public:
     static void spawn();
+    static bool is_current();
 };
 }
diff --git a/Kernel/Net/Routing.cpp b/Kernel/Net/Routing.cpp
index 8e434d290c8f..28e44057ddac 100644
--- a/Kernel/Net/Routing.cpp
+++ b/Kernel/Net/Routing.cpp
@@ -8,6 +8,7 @@
 #include <AK/Singleton.h>
 #include <Kernel/Debug.h>
 #include <Kernel/Net/LoopbackAdapter.h>
+#include <Kernel/Net/NetworkTask.h>
 #include <Kernel/Net/Routing.h>
 #include <Kernel/Thread.h>
 
@@ -216,6 +217,13 @@ RoutingDecision route_to(const IPv4Address& target, const IPv4Address& source, c
     request.set_sender_protocol_address(adapter->ipv4_address());
     adapter->send({ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }, request);
 
+    if (NetworkTask::is_current()) {
+        // FIXME: Waiting for the ARP response from inside the NetworkTask would
+        // deadlock, so let's hope that whoever called route_to() tries again in a bit.
+        dbgln_if(ROUTING_DEBUG, ""Routing: Not waiting for ARP response from inside NetworkTask, sent ARP request using adapter {} for {}"", adapter->name(), target);
+        return { nullptr, {} };
+    }
+
     Optional<MACAddress> addr;
     if (!Thread::current()->block<ARPTableBlocker>({}, next_hop_ip, addr).was_interrupted()) {
         if (addr.has_value()) {
diff --git a/Kernel/Net/TCPSocket.cpp b/Kernel/Net/TCPSocket.cpp
index 58322e3199b5..f41cfa881236 100644
--- a/Kernel/Net/TCPSocket.cpp
+++ b/Kernel/Net/TCPSocket.cpp
@@ -197,7 +197,8 @@ KResult TCPSocket::send_tcp_packet(u16 flags, const UserOrKernelBuffer* payload,
     }
 
     auto routing_decision = route_to(peer_address(), local_address(), bound_interface());
-    VERIFY(!routing_decision.is_zero());
+    if (routing_decision.is_zero())
+        return EHOSTUNREACH;
 
     auto packet_buffer = UserOrKernelBuffer::for_kernel_buffer(buffer.data());
     auto result = routing_decision.adapter->send_ipv4(
@@ -214,7 +215,8 @@ KResult TCPSocket::send_tcp_packet(u16 flags, const UserOrKernelBuffer* payload,
 void TCPSocket::send_outgoing_packets()
 {
     auto routing_decision = route_to(peer_address(), local_address(), bound_interface());
-    VERIFY(!routing_decision.is_zero());
+    if (routing_decision.is_zero())
+        return;
 
     auto now = kgettimeofday();"
130d48fa13eaab1efa64b41cc79e8e3760eea334,2021-02-11 17:41:57,Tom,libgfx: Painter::blit_filtered should take into account alpha value,False,Painter::blit_filtered should take into account alpha value,libgfx,"diff --git a/Userland/Libraries/LibGfx/Painter.cpp b/Userland/Libraries/LibGfx/Painter.cpp
index 031d22882693..3ff25202d318 100644
--- a/Userland/Libraries/LibGfx/Painter.cpp
+++ b/Userland/Libraries/LibGfx/Painter.cpp
@@ -590,9 +590,13 @@ void Painter::blit_filtered(const IntPoint& position, const Gfx::Bitmap& source,
         for (int row = first_row; row <= last_row; ++row) {
             for (int x = 0; x <= (last_column - first_column); ++x) {
                 u8 alpha = Color::from_rgba(src[x]).alpha();
-                if (alpha == 0xff)
-                    dst[x] = filter(Color::from_rgba(src[x])).value();
-                else if (!alpha)
+                if (alpha == 0xff) {
+                    auto color = filter(Color::from_rgba(src[x]));
+                    if (color.alpha() == 0xff)
+                        dst[x] = color.value();
+                    else
+                        dst[x] = Color::from_rgba(dst[x]).blend(color).value();
+                } else if (!alpha)
                     continue;
                 else
                     dst[x] = Color::from_rgba(dst[x]).blend(filter(Color::from_rgba(src[x]))).value();
@@ -605,9 +609,13 @@ void Painter::blit_filtered(const IntPoint& position, const Gfx::Bitmap& source,
             const RGBA32* src = source.scanline(safe_src_rect.top() + row / s) + safe_src_rect.left() + first_column / s;
             for (int x = 0; x <= (last_column - first_column); ++x) {
                 u8 alpha = Color::from_rgba(src[x / s]).alpha();
-                if (alpha == 0xff)
-                    dst[x] = filter(Color::from_rgba(src[x / s])).value();
-                else if (!alpha)
+                if (alpha == 0xff) {
+                    auto color = filter(Color::from_rgba(src[x / s]));
+                    if (color.alpha() == 0xff)
+                        dst[x] = color.value();
+                    else
+                        dst[x] = Color::from_rgba(dst[x]).blend(color).value();
+                } else if (!alpha)
                     continue;
                 else
                     dst[x] = Color::from_rgba(dst[x]).blend(filter(Color::from_rgba(src[x / s]))).value();"
6573ace8f149829041d5ed69990e2ba36464febb,2023-07-31 08:52:12,Hediadyoin1,ak: Move rounding function to the top of AK/Math.h,False,Move rounding function to the top of AK/Math.h,ak,"diff --git a/AK/Math.h b/AK/Math.h
index 6719a4b25235..8636e990c05f 100644
--- a/AK/Math.h
+++ b/AK/Math.h
@@ -81,6 +81,214 @@ constexpr size_t product_odd() { return value * product_odd<value - 2>(); }
         return res;                           \
     }
 
+namespace Rounding {
+template<FloatingPoint T>
+constexpr T ceil(T num)
+{
+    if (is_constant_evaluated()) {
+        if (num < NumericLimits<i64>::min() || num > NumericLimits<i64>::max())
+            return num;
+        return (static_cast<T>(static_cast<i64>(num)) == num)
+            ? static_cast<i64>(num)
+            : static_cast<i64>(num) + ((num > 0) ? 1 : 0);
+    }
+#if ARCH(AARCH64)
+    AARCH64_INSTRUCTION(frintp, num);
+#else
+    return __builtin_ceil(num);
+#endif
+}
+
+template<FloatingPoint T>
+constexpr T floor(T num)
+{
+    if (is_constant_evaluated()) {
+        if (num < NumericLimits<i64>::min() || num > NumericLimits<i64>::max())
+            return num;
+        return (static_cast<T>(static_cast<i64>(num)) == num)
+            ? static_cast<i64>(num)
+            : static_cast<i64>(num) - ((num > 0) ? 0 : 1);
+    }
+#if ARCH(AARCH64)
+    AARCH64_INSTRUCTION(frintm, num);
+#else
+    return __builtin_floor(num);
+#endif
+}
+
+template<FloatingPoint T>
+constexpr T round(T x)
+{
+    CONSTEXPR_STATE(round, x);
+    // Note: This is break-tie-away-from-zero, so not the hw's understanding of
+    //       ""nearest"", which would be towards even.
+    if (x == 0.)
+        return x;
+    if (x > 0.)
+        return floor(x + .5);
+    return ceil(x - .5);
+}
+
+template<Integral I, FloatingPoint P>
+ALWAYS_INLINE I round_to(P value);
+
+#if ARCH(X86_64)
+template<Integral I>
+ALWAYS_INLINE I round_to(long double value)
+{
+    // Note: fistps outputs into a signed integer location (i16, i32, i64),
+    //       so lets be nice and tell the compiler that.
+    Conditional<sizeof(I) >= sizeof(i16), MakeSigned<I>, i16> ret;
+    if constexpr (sizeof(I) == sizeof(i64)) {
+        asm(""fistpll %0""
+            : ""=m""(ret)
+            : ""t""(value)
+            : ""st"");
+    } else if constexpr (sizeof(I) == sizeof(i32)) {
+        asm(""fistpl %0""
+            : ""=m""(ret)
+            : ""t""(value)
+            : ""st"");
+    } else {
+        asm(""fistps %0""
+            : ""=m""(ret)
+            : ""t""(value)
+            : ""st"");
+    }
+    return static_cast<I>(ret);
+}
+
+template<Integral I>
+ALWAYS_INLINE I round_to(float value)
+{
+    // FIXME: round_to<u64> might will cause issues, aka the indefinite value being set,
+    //        if the value surpasses the i64 limit, even if the result could fit into an u64
+    //        To solve this we would either need to detect that value or do a range check and
+    //        then do a more specialized conversion, which might include a division (which is expensive)
+    if constexpr (sizeof(I) == sizeof(i64) || IsSame<I, u32>) {
+        i64 ret;
+        asm(""cvtss2si %1, %0""
+            : ""=r""(ret)
+            : ""xm""(value));
+        return static_cast<I>(ret);
+    }
+    i32 ret;
+    asm(""cvtss2si %1, %0""
+        : ""=r""(ret)
+        : ""xm""(value));
+    return static_cast<I>(ret);
+}
+
+template<Integral I>
+ALWAYS_INLINE I round_to(double value)
+{
+    // FIXME: round_to<u64> might will cause issues, aka the indefinite value being set,
+    //        if the value surpasses the i64 limit, even if the result could fit into an u64
+    //        To solve this we would either need to detect that value or do a range check and
+    //        then do a more specialized conversion, which might include a division (which is expensive)
+    if constexpr (sizeof(I) == sizeof(i64) || IsSame<I, u32>) {
+        i64 ret;
+        asm(""cvtsd2si %1, %0""
+            : ""=r""(ret)
+            : ""xm""(value));
+        return static_cast<I>(ret);
+    }
+    i32 ret;
+    asm(""cvtsd2si %1, %0""
+        : ""=r""(ret)
+        : ""xm""(value));
+    return static_cast<I>(ret);
+}
+
+#elif ARCH(AARCH64)
+template<Signed I>
+ALWAYS_INLINE I round_to(float value)
+{
+    if constexpr (sizeof(I) <= sizeof(u32)) {
+        i32 res;
+        asm(""fcvtns %w0, %s1""
+            : ""=r""(res)
+            : ""w""(value));
+        return static_cast<I>(res);
+    }
+    i64 res;
+    asm(""fcvtns %0, %s1""
+        : ""=r""(res)
+        : ""w""(value));
+    return static_cast<I>(res);
+}
+
+template<Signed I>
+ALWAYS_INLINE I round_to(double value)
+{
+    if constexpr (sizeof(I) <= sizeof(u32)) {
+        i32 res;
+        asm(""fcvtns %w0, %d1""
+            : ""=r""(res)
+            : ""w""(value));
+        return static_cast<I>(res);
+    }
+    i64 res;
+    asm(""fcvtns %0, %d1""
+        : ""=r""(res)
+        : ""w""(value));
+    return static_cast<I>(res);
+}
+
+template<Unsigned U>
+ALWAYS_INLINE U round_to(float value)
+{
+    if constexpr (sizeof(U) <= sizeof(u32)) {
+        u32 res;
+        asm(""fcvtnu %w0, %s1""
+            : ""=r""(res)
+            : ""w""(value));
+        return static_cast<U>(res);
+    }
+    i64 res;
+    asm(""fcvtnu %0, %s1""
+        : ""=r""(res)
+        : ""w""(value));
+    return static_cast<U>(res);
+}
+
+template<Unsigned U>
+ALWAYS_INLINE U round_to(double value)
+{
+    if constexpr (sizeof(U) <= sizeof(u32)) {
+        u32 res;
+        asm(""fcvtns %w0, %d1""
+            : ""=r""(res)
+            : ""w""(value));
+        return static_cast<U>(res);
+    }
+    i64 res;
+    asm(""fcvtns %0, %d1""
+        : ""=r""(res)
+        : ""w""(value));
+    return static_cast<U>(res);
+}
+
+#else
+template<Integral I, FloatingPoint P>
+ALWAYS_INLINE I round_to(P value)
+{
+    if constexpr (IsSame<P, long double>)
+        return static_cast<I>(__builtin_llrintl(value));
+    if constexpr (IsSame<P, double>)
+        return static_cast<I>(__builtin_llrint(value));
+    if constexpr (IsSame<P, float>)
+        return static_cast<I>(__builtin_llrintf(value));
+}
+#endif
+
+}
+
+using Rounding::ceil;
+using Rounding::floor;
+using Rounding::round;
+using Rounding::round_to;
+
 namespace Division {
 template<FloatingPoint T>
 constexpr T fmod(T x, T y)
@@ -680,159 +888,6 @@ using Hyperbolic::cosh;
 using Hyperbolic::sinh;
 using Hyperbolic::tanh;
 
-template<Integral I, FloatingPoint P>
-ALWAYS_INLINE I round_to(P value);
-
-#if ARCH(X86_64)
-template<Integral I>
-ALWAYS_INLINE I round_to(long double value)
-{
-    // Note: fistps outputs into a signed integer location (i16, i32, i64),
-    //       so lets be nice and tell the compiler that.
-    Conditional<sizeof(I) >= sizeof(i16), MakeSigned<I>, i16> ret;
-    if constexpr (sizeof(I) == sizeof(i64)) {
-        asm(""fistpll %0""
-            : ""=m""(ret)
-            : ""t""(value)
-            : ""st"");
-    } else if constexpr (sizeof(I) == sizeof(i32)) {
-        asm(""fistpl %0""
-            : ""=m""(ret)
-            : ""t""(value)
-            : ""st"");
-    } else {
-        asm(""fistps %0""
-            : ""=m""(ret)
-            : ""t""(value)
-            : ""st"");
-    }
-    return static_cast<I>(ret);
-}
-
-template<Integral I>
-ALWAYS_INLINE I round_to(float value)
-{
-    // FIXME: round_to<u64> might will cause issues, aka the indefinite value being set,
-    //        if the value surpasses the i64 limit, even if the result could fit into an u64
-    //        To solve this we would either need to detect that value or do a range check and
-    //        then do a more specialized conversion, which might include a division (which is expensive)
-    if constexpr (sizeof(I) == sizeof(i64) || IsSame<I, u32>) {
-        i64 ret;
-        asm(""cvtss2si %1, %0""
-            : ""=r""(ret)
-            : ""xm""(value));
-        return static_cast<I>(ret);
-    }
-    i32 ret;
-    asm(""cvtss2si %1, %0""
-        : ""=r""(ret)
-        : ""xm""(value));
-    return static_cast<I>(ret);
-}
-
-template<Integral I>
-ALWAYS_INLINE I round_to(double value)
-{
-    // FIXME: round_to<u64> might will cause issues, aka the indefinite value being set,
-    //        if the value surpasses the i64 limit, even if the result could fit into an u64
-    //        To solve this we would either need to detect that value or do a range check and
-    //        then do a more specialized conversion, which might include a division (which is expensive)
-    if constexpr (sizeof(I) == sizeof(i64) || IsSame<I, u32>) {
-        i64 ret;
-        asm(""cvtsd2si %1, %0""
-            : ""=r""(ret)
-            : ""xm""(value));
-        return static_cast<I>(ret);
-    }
-    i32 ret;
-    asm(""cvtsd2si %1, %0""
-        : ""=r""(ret)
-        : ""xm""(value));
-    return static_cast<I>(ret);
-}
-
-#elif ARCH(AARCH64)
-template<Signed I>
-ALWAYS_INLINE I round_to(float value)
-{
-    if constexpr (sizeof(I) <= sizeof(u32)) {
-        i32 res;
-        asm(""fcvtns %w0, %s1""
-            : ""=r""(res)
-            : ""w""(value));
-        return static_cast<I>(res);
-    }
-    i64 res;
-    asm(""fcvtns %0, %s1""
-        : ""=r""(res)
-        : ""w""(value));
-    return static_cast<I>(res);
-}
-
-template<Signed I>
-ALWAYS_INLINE I round_to(double value)
-{
-    if constexpr (sizeof(I) <= sizeof(u32)) {
-        i32 res;
-        asm(""fcvtns %w0, %d1""
-            : ""=r""(res)
-            : ""w""(value));
-        return static_cast<I>(res);
-    }
-    i64 res;
-    asm(""fcvtns %0, %d1""
-        : ""=r""(res)
-        : ""w""(value));
-    return static_cast<I>(res);
-}
-
-template<Unsigned U>
-ALWAYS_INLINE U round_to(float value)
-{
-    if constexpr (sizeof(U) <= sizeof(u32)) {
-        u32 res;
-        asm(""fcvtnu %w0, %s1""
-            : ""=r""(res)
-            : ""w""(value));
-        return static_cast<U>(res);
-    }
-    i64 res;
-    asm(""fcvtnu %0, %s1""
-        : ""=r""(res)
-        : ""w""(value));
-    return static_cast<U>(res);
-}
-
-template<Unsigned U>
-ALWAYS_INLINE U round_to(double value)
-{
-    if constexpr (sizeof(U) <= sizeof(u32)) {
-        u32 res;
-        asm(""fcvtns %w0, %d1""
-            : ""=r""(res)
-            : ""w""(value));
-        return static_cast<U>(res);
-    }
-    i64 res;
-    asm(""fcvtns %0, %d1""
-        : ""=r""(res)
-        : ""w""(value));
-    return static_cast<U>(res);
-}
-
-#else
-template<Integral I, FloatingPoint P>
-ALWAYS_INLINE I round_to(P value)
-{
-    if constexpr (IsSame<P, long double>)
-        return static_cast<I>(__builtin_llrintl(value));
-    if constexpr (IsSame<P, double>)
-        return static_cast<I>(__builtin_llrint(value));
-    if constexpr (IsSame<P, float>)
-        return static_cast<I>(__builtin_llrintf(value));
-}
-#endif
-
 template<FloatingPoint T>
 constexpr T pow(T x, T y)
 {
@@ -859,53 +914,6 @@ constexpr T pow(T x, T y)
     return exp2<T>(y * log2<T>(x));
 }
 
-template<FloatingPoint T>
-constexpr T ceil(T num)
-{
-    if (is_constant_evaluated()) {
-        if (num < NumericLimits<i64>::min() || num > NumericLimits<i64>::max())
-            return num;
-        return (static_cast<T>(static_cast<i64>(num)) == num)
-            ? static_cast<i64>(num)
-            : static_cast<i64>(num) + ((num > 0) ? 1 : 0);
-    }
-#if ARCH(AARCH64)
-    AARCH64_INSTRUCTION(frintp, num);
-#else
-    return __builtin_ceil(num);
-#endif
-}
-
-template<FloatingPoint T>
-constexpr T floor(T num)
-{
-    if (is_constant_evaluated()) {
-        if (num < NumericLimits<i64>::min() || num > NumericLimits<i64>::max())
-            return num;
-        return (static_cast<T>(static_cast<i64>(num)) == num)
-            ? static_cast<i64>(num)
-            : static_cast<i64>(num) - ((num > 0) ? 0 : 1);
-    }
-#if ARCH(AARCH64)
-    AARCH64_INSTRUCTION(frintm, num);
-#else
-    return __builtin_floor(num);
-#endif
-}
-
-template<FloatingPoint T>
-constexpr T round(T x)
-{
-    CONSTEXPR_STATE(round, x);
-    // Note: This is break-tie-away-from-zero, so not the hw's understanding of
-    //       ""nearest"", which would be towards even.
-    if (x == 0.)
-        return x;
-    if (x > 0.)
-        return floor(x + .5);
-    return ceil(x - .5);
-}
-
 template<typename T>
 constexpr int clamp_to_int(T value)
 {"
5a8f57f7b3f2c0141b6d8a2a7379ae7411f50e66,2023-12-26 21:02:32,Sam Atkins,libweb: Parse place-items property using TokenStream,False,Parse place-items property using TokenStream,libweb,"diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
index 5c6eab238d3a..86048e34180b 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -4535,16 +4535,17 @@ RefPtr<StyleValue> Parser::parse_place_content_value(TokenStream<ComponentValue>
         { maybe_align_content_value.release_nonnull(), maybe_justify_content_value.release_nonnull() });
 }
 
-RefPtr<StyleValue> Parser::parse_place_items_value(Vector<ComponentValue> const& component_values)
+RefPtr<StyleValue> Parser::parse_place_items_value(TokenStream<ComponentValue>& tokens)
 {
-    auto tokens = TokenStream { component_values };
+    auto transaction = tokens.begin_transaction();
     auto maybe_align_items_value = parse_css_value_for_property(PropertyID::AlignItems, tokens);
     if (!maybe_align_items_value)
         return nullptr;
 
-    if (component_values.size() == 1) {
+    if (!tokens.has_next_token()) {
         if (!property_accepts_identifier(PropertyID::JustifyItems, maybe_align_items_value->to_identifier()))
             return nullptr;
+        transaction.commit();
         return ShorthandStyleValue::create(PropertyID::PlaceItems,
             { PropertyID::AlignItems, PropertyID::JustifyItems },
             { *maybe_align_items_value, *maybe_align_items_value });
@@ -4553,6 +4554,7 @@ RefPtr<StyleValue> Parser::parse_place_items_value(Vector<ComponentValue> const&
     auto maybe_justify_items_value = parse_css_value_for_property(PropertyID::JustifyItems, tokens);
     if (!maybe_justify_items_value)
         return nullptr;
+    transaction.commit();
     return ShorthandStyleValue::create(PropertyID::PlaceItems,
         { PropertyID::AlignItems, PropertyID::JustifyItems },
         { *maybe_align_items_value, *maybe_justify_items_value });
@@ -5915,7 +5917,7 @@ Parser::ParseErrorOr<NonnullRefPtr<StyleValue>> Parser::parse_css_value(Property
             return parsed_value.release_nonnull();
         return ParseError::SyntaxError;
     case PropertyID::PlaceItems:
-        if (auto parsed_value = parse_place_items_value(component_values))
+        if (auto parsed_value = parse_place_items_value(tokens); parsed_value && !tokens.has_next_token())
             return parsed_value.release_nonnull();
         return ParseError::SyntaxError;
     case PropertyID::PlaceSelf:
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
index 5ade81353670..9bbf995be1e4 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
@@ -244,7 +244,7 @@ class Parser {
     RefPtr<StyleValue> parse_math_depth_value(TokenStream<ComponentValue>&);
     RefPtr<StyleValue> parse_overflow_value(TokenStream<ComponentValue>&);
     RefPtr<StyleValue> parse_place_content_value(TokenStream<ComponentValue>&);
-    RefPtr<StyleValue> parse_place_items_value(Vector<ComponentValue> const&);
+    RefPtr<StyleValue> parse_place_items_value(TokenStream<ComponentValue>&);
     RefPtr<StyleValue> parse_place_self_value(Vector<ComponentValue> const&);
     RefPtr<StyleValue> parse_quotes_value(TokenStream<ComponentValue>&);
     enum class AllowInsetKeyword {"
ce9f355b1233b3f6d858eedc7837a0a2e6994fc1,2022-03-09 02:59:53,Ali Mohammad Pur,ports: Add a bdwgc (aka libgc) port,False,Add a bdwgc (aka libgc) port,ports,"diff --git a/Ports/AvailablePorts.md b/Ports/AvailablePorts.md
index 7c9162200723..df22938137ed 100644
--- a/Ports/AvailablePorts.md
+++ b/Ports/AvailablePorts.md
@@ -9,6 +9,7 @@ Please make sure to keep this list up to date when adding and updating ports. :^
 | [`bash`](bash/)                        | GNU Bash                                                        | 5.1.16                   | https://www.gnu.org/software/bash/                                             |
 | [`bass`](bass/)                        | Beneath a Steel Sky                                             | cd-1.2                   | https://www.scummvm.org/games                                                  |
 | [`bc`](bc/)                            | bc                                                              | 5.1.1                    | https://github.com/gavinhoward/bc                                              |
+| [`bdwgc`](bdwgc/)                      | Boehm-Demers-Weiser Garbage Collector (libgc)                   | 8.0.6                    | https://github.com/ivmai/bdwgc                                                 |
 | [`binutils`](binutils/)                | GNU Binutils                                                    | 2.38                     | https://www.gnu.org/software/binutils/                                         |
 | [`bison`](bison/)                      | GNU Bison                                                       | 1.25                     | https://www.gnu.org/software/bison/                                            |
 | [`bochs`](bochs/)                      | Bochs x86 PC emulator                                           | 2.7                      | https://sourceforge.net/projects/bochs/                                        |
diff --git a/Ports/bdwgc/package.sh b/Ports/bdwgc/package.sh
new file mode 100755
index 000000000000..54b6b388f1c4
--- /dev/null
+++ b/Ports/bdwgc/package.sh
@@ -0,0 +1,25 @@
+#!/usr/bin/env -S bash ../.port_include.sh
+
+port=bdwgc
+version=8.0.6
+use_fresh_config_sub=true
+files=""https://github.com/ivmai/bdwgc/releases/download/v$version/gc-$version.tar.gz bdwgc.tar.gz 3b4914abc9fa76593596773e4da671d7ed4d5390e3d46fbf2e5f155e121bea11""
+depends=(libatomic_ops)
+workdir=gc-$version
+auth_type=sha256
+
+build() {
+    cd $workdir
+    mkdir build || true
+    cd build
+    cmake .. \
+        -Denable_threads=ON \
+        -DCMAKE_RUNTIME_OUTPUT_DIRECTORY=""$DESTDIR/usr/local/bin"" \
+        -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=""$DESTDIR/usr/local/lib""
+    cmake --build .
+}
+
+install() {
+    cd ..
+    cp -r include ""$DESTDIR/usr/local/include/gc""
+}
diff --git a/Ports/bdwgc/patches/0001-Teach-os_dep-and-gcconfig.h-about-serenity.patch b/Ports/bdwgc/patches/0001-Teach-os_dep-and-gcconfig.h-about-serenity.patch
new file mode 100644
index 000000000000..23ea7049d8ec
--- /dev/null
+++ b/Ports/bdwgc/patches/0001-Teach-os_dep-and-gcconfig.h-about-serenity.patch
@@ -0,0 +1,215 @@
+From 1e6a332dc87920d79eca1b1ddb66033c7f369d38 Mon Sep 17 00:00:00 2001
+From: Ali Mohammad Pur <ali.mpfard@gmail.com>
+Date: Thu, 24 Feb 2022 01:00:57 +0330
+Subject: [PATCH 1/6] Teach os_dep and gcconfig.h about serenity
+
+---
+ include/private/gcconfig.h | 48 +++++++++++++++++++++++++++++++++++---
+ os_dep.c                   | 34 ++++++++++++++++++++-------
+ 2 files changed, 70 insertions(+), 12 deletions(-)
+
+diff --git a/include/private/gcconfig.h b/include/private/gcconfig.h
+index 1979c58..e9d1d42 100644
+--- a/include/private/gcconfig.h
++++ b/include/private/gcconfig.h
+@@ -351,6 +351,15 @@ EXTERN_C_BEGIN
+ #    define HAIKU
+ #    define mach_type_known
+ # endif
++# if defined(__serenity__)
++#    define SERENITY
++#    define mach_type_known
++#    if defined(_X86_) || defined (__i386__)
++#        define I386
++#    elif defined(__x86_64__)
++#        define X86_64
++#    endif
++#endif
+ # if defined(__HAIKU__) && (defined(__amd64__) || defined(__x86_64__))
+ #    define X86_64
+ #    define HAIKU
+@@ -1377,6 +1386,22 @@ EXTERN_C_BEGIN
+ #     define DYNAMIC_LOADING
+ #     define MPROTECT_VDB
+ #   endif
++#   ifdef SERENITY
++#     define OS_TYPE ""SERENITY""
++      EXTERN_C_END
++#     include <unistd.h>
++      EXTERN_C_BEGIN
++#     define GETPAGESIZE() (unsigned)sysconf(_SC_PAGESIZE)
++      extern int etext[], _end[];
++#     define DATASTART ((ptr_t)((((word)(etext)) + 0xfff) & ~0xfff))
++#     define DATAEND ((ptr_t)(_end))
++#     define DYNAMIC_LOADING
++#     define MPROTECT_VDB
++#     define USE_MMAP_ANON
++#     ifndef USE_MMAP
++#       define USE_MMAP 1
++#     endif
++#   endif
+ #   ifdef SOLARIS
+ #       define OS_TYPE ""SOLARIS""
+         extern int _etext[], _end[];
+@@ -2727,6 +2752,23 @@ EXTERN_C_BEGIN
+ #     define DYNAMIC_LOADING
+ #     define MPROTECT_VDB
+ #   endif
++#   ifdef SERENITY
++#     define OS_TYPE ""SERENITY""
++      EXTERN_C_END
++#     include <unistd.h>
++      EXTERN_C_BEGIN
++#     define GETPAGESIZE() (unsigned)sysconf(_SC_PAGESIZE)
++#     define HEURISTIC2
++      extern int etext[], _end[];
++#     define DATASTART ((ptr_t)((((word)(etext)) + 0xfff) & ~0xfff))
++#     define DATAEND ((ptr_t)(_end))
++#     define DYNAMIC_LOADING
++#     define MPROTECT_VDB
++#     define USE_MMAP_ANON
++#     ifndef USE_MMAP
++#       define USE_MMAP 1
++#     endif
++#   endif
+ #   ifdef SOLARIS
+ #       define OS_TYPE ""SOLARIS""
+ #       define ELF_CLASS ELFCLASS64
+@@ -3068,7 +3110,7 @@ EXTERN_C_BEGIN
+ #if defined(SVR4) || defined(LINUX) || defined(IRIX5) || defined(HPUX) \
+     || defined(OPENBSD) || defined(NETBSD) || defined(FREEBSD) \
+     || defined(DGUX) || defined(BSD) || defined(HAIKU) || defined(HURD) \
+-    || defined(AIX) || defined(DARWIN) || defined(OSF1)
++    || defined(AIX) || defined(DARWIN) || defined(OSF1) || defined(SERENITY)
+ # define UNIX_LIKE      /* Basic Unix-like system calls work.   */
+ #endif
+ 
+@@ -3118,7 +3160,7 @@ EXTERN_C_BEGIN
+ 
+ #if defined(DARWIN) || defined(FREEBSD) || defined(HAIKU) \
+     || defined(IRIX5) || defined(LINUX) || defined(NETBSD) \
+-    || defined(OPENBSD) || defined(SOLARIS) \
++    || defined(OPENBSD) || defined(SOLARIS) || defined(SERENITY) \
+     || ((defined(CYGWIN32) || defined(USE_MMAP) || defined(USE_MUNMAP)) \
+         && !defined(USE_WINALLOC))
+   /* Try both sbrk and mmap, in that order.     */
+@@ -3223,7 +3265,7 @@ EXTERN_C_BEGIN
+ 
+ #if ((defined(UNIX_LIKE) && (defined(DARWIN) || defined(HAIKU) \
+                              || defined(HURD) || defined(OPENBSD) \
+-                             || defined(ARM32) \
++                             || defined(ARM32) || defined(SERENITY) \
+                              || defined(AVR32) || defined(MIPS) \
+                              || defined(NIOS2) || defined(OR1K))) \
+      || (defined(LINUX) && !defined(__gnu_linux__)) \
+diff --git a/os_dep.c b/os_dep.c
+index b183423..a6d62b9 100644
+--- a/os_dep.c
++++ b/os_dep.c
+@@ -845,6 +845,22 @@ GC_INNER size_t GC_page_size = 0;
+ # define HAVE_GET_STACK_BASE
+ #endif /* HAIKU */
+ 
++#ifdef SERENITY
++# include <serenity.h>
++  GC_API int GC_CALL GC_get_stack_base(struct GC_stack_base *sb)
++  {
++    uintptr_t base;
++    size_t size;
++    if (get_stack_bounds(&base, &size) < 0) {
++      WARN(""get_stack_bounds failed\n"", 0);
++      return GC_UNIMPLEMENTED;
++    }
++    sb->mem_base = base + size;
++    return GC_SUCCESS;
++  }
++# define HAVE_GET_STACK_BASE
++#endif /* SERENITY */
++
+ #ifdef OS2
+   GC_API int GC_CALL GC_get_stack_base(struct GC_stack_base *sb)
+   {
+@@ -873,7 +889,7 @@ GC_INNER size_t GC_page_size = 0;
+ 
+ #   if defined(SUNOS5SIGS) || defined(IRIX5) || defined(OSF1) \
+        || defined(HAIKU) || defined(HURD) || defined(FREEBSD) \
+-       || defined(NETBSD)
++       || defined(NETBSD) || defined(SERENITY)
+         static struct sigaction old_segv_act;
+ #       if defined(_sigargs) /* !Irix6.x */ \
+            || defined(HURD) || defined(NETBSD) || defined(FREEBSD)
+@@ -890,7 +906,7 @@ GC_INNER size_t GC_page_size = 0;
+     {
+ #       if defined(SUNOS5SIGS) || defined(IRIX5) || defined(OSF1) \
+            || defined(HAIKU) || defined(HURD) || defined(FREEBSD) \
+-           || defined(NETBSD)
++           || defined(NETBSD) || defined(SERENITY)
+           struct sigaction act;
+ 
+           act.sa_handler = h;
+@@ -955,7 +971,7 @@ GC_INNER size_t GC_page_size = 0;
+     {
+ #       if defined(SUNOS5SIGS) || defined(IRIX5) || defined(OSF1) \
+            || defined(HAIKU) || defined(HURD) || defined(FREEBSD) \
+-           || defined(NETBSD)
++           || defined(NETBSD) || defined(SERENITY)
+           (void) sigaction(SIGSEGV, &old_segv_act, 0);
+ #         if defined(IRIX5) && defined(_sigargs) /* Irix 5.x, not 6.x */ \
+              || defined(HURD) || defined(NETBSD)
+@@ -1227,7 +1243,7 @@ GC_INNER size_t GC_page_size = 0;
+ # define GET_MAIN_STACKBASE_SPECIAL
+ #elif !defined(AMIGA) && !defined(HAIKU) && !defined(OS2) \
+       && !defined(MSWIN32) && !defined(MSWINCE) && !defined(CYGWIN32) \
+-      && !defined(GC_OPENBSD_THREADS) \
++      && !defined(GC_OPENBSD_THREADS) && !defined(SERENITY) \
+       && (!defined(GC_SOLARIS_THREADS) || defined(_STRICT_STDC))
+ 
+ # if (defined(HAVE_PTHREAD_ATTR_GET_NP) || defined(HAVE_PTHREAD_GETATTR_NP)) \
+@@ -1328,7 +1344,7 @@ GC_INNER size_t GC_page_size = 0;
+     return(result);
+   }
+ # define GET_MAIN_STACKBASE_SPECIAL
+-#endif /* !AMIGA, !HAIKU, !OPENBSD, !OS2, !Windows */
++#endif /* !AMIGA, !HAIKU, !OPENBSD, !SERENITY, !OS2, !Windows */
+ 
+ #if (defined(HAVE_PTHREAD_ATTR_GET_NP) || defined(HAVE_PTHREAD_GETATTR_NP)) \
+     && defined(THREADS) && !defined(HAVE_GET_STACK_BASE)
+@@ -2584,7 +2600,7 @@ GC_INNER void GC_unmap(ptr_t start, size_t bytes)
+       /* accidentally grabbing the same address space.                  */
+       {
+ #       if defined(AIX) || defined(CYGWIN32) || defined(HAIKU) \
+-           || defined(HPUX)
++           || defined(HPUX) || defined(SERENITY)
+           /* On AIX, mmap(PROT_NONE) fails with ENOMEM unless the       */
+           /* environment variable XPG_SUS_ENV is set to ON.             */
+           /* On Cygwin, calling mmap() with the new protection flags on */
+@@ -2715,7 +2731,7 @@ GC_INNER void GC_unmap_gap(ptr_t start1, size_t bytes1, ptr_t start2,
+       if (len != 0) {
+         /* Immediately remap as above. */
+ #       if defined(AIX) || defined(CYGWIN32) || defined(HAIKU) \
+-           || defined(HPUX)
++           || defined(HPUX) || defined(SERENITY)
+           if (mprotect(start_addr, len, PROT_NONE))
+             ABORT(""mprotect(PROT_NONE) failed"");
+ #       else
+@@ -3035,7 +3051,7 @@ GC_API GC_push_other_roots_proc GC_CALL GC_get_push_other_roots(void)
+ # elif !defined(USE_WINALLOC)
+ #   include <sys/mman.h>
+ #   include <signal.h>
+-#   if !defined(CYGWIN32) && !defined(HAIKU)
++#   if !defined(CYGWIN32) && !defined(HAIKU) && !defined(SERENITY)
+ #     include <sys/syscall.h>
+ #   endif
+ 
+@@ -3160,7 +3176,7 @@ GC_API GC_push_other_roots_proc GC_CALL GC_get_push_other_roots(void)
+ #     define CODE_OK (si -> si_code == 2 /* experimentally determined */)
+ #   elif defined(IRIX5)
+ #     define CODE_OK (si -> si_code == EACCES)
+-#   elif defined(CYGWIN32) || defined(HAIKU) || defined(HURD)
++#   elif defined(CYGWIN32) || defined(HAIKU) || defined(HURD) || defined(SERENITY)
+ #     define CODE_OK TRUE
+ #   elif defined(LINUX)
+ #     define CODE_OK TRUE
+-- 
+2.35.1
+
diff --git a/Ports/bdwgc/patches/0002-Error-on-unknown-arch.patch b/Ports/bdwgc/patches/0002-Error-on-unknown-arch.patch
new file mode 100644
index 000000000000..f6245174aac2
--- /dev/null
+++ b/Ports/bdwgc/patches/0002-Error-on-unknown-arch.patch
@@ -0,0 +1,25 @@
+From 044ec10fa839e67da2adb0990a60d5a02de205a8 Mon Sep 17 00:00:00 2001
+From: Ali Mohammad Pur <ali.mpfard@gmail.com>
+Date: Thu, 24 Feb 2022 01:50:40 +0330
+Subject: [PATCH 2/6] Error on unknown arch
+
+---
+ include/private/gcconfig.h | 2 ++
+ 1 file changed, 2 insertions(+)
+
+diff --git a/include/private/gcconfig.h b/include/private/gcconfig.h
+index e9d1d42..8e48b66 100644
+--- a/include/private/gcconfig.h
++++ b/include/private/gcconfig.h
+@@ -358,6 +358,8 @@ EXTERN_C_BEGIN
+ #        define I386
+ #    elif defined(__x86_64__)
+ #        define X86_64
++#    else
++#        error ""Invalid arch for serenity""
+ #    endif
+ #endif
+ # if defined(__HAIKU__) && (defined(__amd64__) || defined(__x86_64__))
+-- 
+2.35.1
+
diff --git a/Ports/bdwgc/patches/0003-Teach-dyn_load.c-about-serenity.patch b/Ports/bdwgc/patches/0003-Teach-dyn_load.c-about-serenity.patch
new file mode 100644
index 000000000000..15f9675fb180
--- /dev/null
+++ b/Ports/bdwgc/patches/0003-Teach-dyn_load.c-about-serenity.patch
@@ -0,0 +1,67 @@
+From a7fd9227e9111502a6134666d6636a8695c36f4e Mon Sep 17 00:00:00 2001
+From: Ali Mohammad Pur <ali.mpfard@gmail.com>
+Date: Thu, 24 Feb 2022 01:54:50 +0330
+Subject: [PATCH 3/6] Teach dyn_load.c about serenity
+
+---
+ dyn_load.c | 23 ++++++++++++++++++++---
+ 1 file changed, 20 insertions(+), 3 deletions(-)
+
+diff --git a/dyn_load.c b/dyn_load.c
+index d857246..734643d 100644
+--- a/dyn_load.c
++++ b/dyn_load.c
+@@ -60,7 +60,7 @@ STATIC GC_has_static_roots_func GC_has_static_roots = 0;
+     && !(defined(FREEBSD) && defined(__ELF__)) \
+     && !((defined(LINUX) || defined(NACL)) && defined(__ELF__)) \
+     && !(defined(NETBSD) && defined(__ELF__)) \
+-    && !defined(HAIKU) && !defined(HURD) \
++    && !defined(HAIKU) && !defined(HURD) && !defined(SERENITY) \
+     && !(defined(OPENBSD) && (defined(__ELF__) || defined(M68K))) \
+     && !defined(CPPCHECK)
+ # error We only know how to find data segments of dynamic libraries for above.
+@@ -88,7 +88,7 @@ STATIC GC_has_static_roots_func GC_has_static_roots = 0;
+ # endif
+ #endif /* OPENBSD */
+ 
+-#if defined(SCO_ELF) || defined(DGUX) || defined(HURD) \
++#if defined(SCO_ELF) || defined(DGUX) || defined(HURD) || defined(SERENITY) \
+     || (defined(__ELF__) && (defined(LINUX) || defined(FREEBSD) \
+                              || defined(NACL) || defined(NETBSD) \
+                              || defined(OPENBSD)))
+@@ -98,6 +98,23 @@ STATIC GC_has_static_roots_func GC_has_static_roots = 0;
+     /* Exclude Android because linker.h below includes its own version. */
+ #   include <elf.h>
+ # endif
++# ifdef SERENITY
++#   include <link.h>
++    struct link_map {
++      uintptr_t l_addr;
++      char* l_name;
++      uintptr_t l_ld;
++      struct link_map* l_next;
++      struct link_map* l_prev;
++    };
++    struct r_debug {
++      int32_t r_version;
++      struct link_map* r_map;
++      void (*r_brk)(void);
++      int32_t r_state;
++      uintptr_t r_ldbase;
++    };
++# endif
+ # ifdef HOST_ANDROID
+     /* If you don't need the ""dynamic loading"" feature, you may build   */
+     /* the collector with -D IGNORE_DYNAMIC_LOADING.                    */
+@@ -259,7 +276,7 @@ GC_INNER void GC_register_dynamic_libraries(void)
+ # endif /* !USE_PROC ... */
+ # endif /* SOLARISDL */
+ 
+-#if defined(SCO_ELF) || defined(DGUX) || defined(HURD) \
++#if defined(SCO_ELF) || defined(DGUX) || defined(HURD) || defined(SERENITY) \
+     || (defined(__ELF__) && (defined(LINUX) || defined(FREEBSD) \
+                              || defined(NACL) || defined(NETBSD) \
+                              || defined(OPENBSD)))
+-- 
+2.35.1
+
diff --git a/Ports/bdwgc/patches/0004-Teach-bdwgc-about-serenity-signals.patch b/Ports/bdwgc/patches/0004-Teach-bdwgc-about-serenity-signals.patch
new file mode 100644
index 000000000000..04889f36a9c3
--- /dev/null
+++ b/Ports/bdwgc/patches/0004-Teach-bdwgc-about-serenity-signals.patch
@@ -0,0 +1,66 @@
+From d37f9022e78b9df4959f9be265f91e611e84e03a Mon Sep 17 00:00:00 2001
+From: Ali Mohammad Pur <ali.mpfard@gmail.com>
+Date: Thu, 24 Feb 2022 03:30:02 +0330
+Subject: [PATCH 4/6] Teach bdwgc about serenity signals
+
+Serenity doesn't have the realtime POSIX signals, so use SIGXCPU and
+SIGXFSZ instead.
+---
+ include/gc_config_macros.h | 4 +++-
+ include/private/gc_priv.h  | 2 +-
+ pthread_stop_world.c       | 4 +++-
+ 3 files changed, 7 insertions(+), 3 deletions(-)
+
+diff --git a/include/gc_config_macros.h b/include/gc_config_macros.h
+index 14c65ee..c19b050 100644
+--- a/include/gc_config_macros.h
++++ b/include/gc_config_macros.h
+@@ -72,7 +72,7 @@
+ 
+ #if defined(GC_AIX_THREADS) || defined(GC_DARWIN_THREADS) \
+     || defined(GC_DGUX386_THREADS) || defined(GC_FREEBSD_THREADS) \
+-    || defined(GC_HPUX_THREADS) \
++    || defined(GC_HPUX_THREADS) || defined(GC_SERENITY_THREADS) \
+     || defined(GC_IRIX_THREADS) || defined(GC_LINUX_THREADS) \
+     || defined(GC_NETBSD_THREADS) || defined(GC_OPENBSD_THREADS) \
+     || defined(GC_OSF1_THREADS) || defined(GC_SOLARIS_THREADS) \
+@@ -83,6 +83,8 @@
+ #elif defined(GC_THREADS)
+ # if defined(__linux__)
+ #   define GC_LINUX_THREADS
++# elif defined(__serenity__)
++#   define GC_SERENITY_THREADS
+ # elif defined(__OpenBSD__)
+ #   define GC_OPENBSD_THREADS
+ # elif defined(_PA_RISC1_1) || defined(_PA_RISC2_0) || defined(hppa) \
+diff --git a/include/private/gc_priv.h b/include/private/gc_priv.h
+index 629418f..1278091 100644
+--- a/include/private/gc_priv.h
++++ b/include/private/gc_priv.h
+@@ -2641,7 +2641,7 @@ GC_INNER void *GC_store_debug_info_inner(void *p, word sz, const char *str,
+       /* Linuxthreads itself uses SIGUSR1 and SIGUSR2.                  */
+ #     define SIG_SUSPEND SIGPWR
+ #   endif
+-# elif defined(GC_OPENBSD_THREADS)
++# elif defined(GC_OPENBSD_THREADS) || defined(GC_SERENITY_THREADS)
+ #   ifndef GC_OPENBSD_UTHREADS
+ #     define SIG_SUSPEND SIGXFSZ
+ #   endif
+diff --git a/pthread_stop_world.c b/pthread_stop_world.c
+index 4b2c429..25eb2a5 100644
+--- a/pthread_stop_world.c
++++ b/pthread_stop_world.c
+@@ -146,7 +146,9 @@ STATIC volatile AO_t GC_world_is_stopped = FALSE;
+  * pointer(s) and acknowledge.
+  */
+ #ifndef SIG_THR_RESTART
+-# if defined(GC_HPUX_THREADS) || defined(GC_OSF1_THREADS) \
++# if defined(SERENITY)
++#   define SIG_THR_RESTART SIGUSR1
++# elif defined(GC_HPUX_THREADS) || defined(GC_OSF1_THREADS) \
+      || defined(GC_NETBSD_THREADS) || defined(GC_USESIGRT_SIGNALS)
+ #   if defined(_SIGRTMIN) && !defined(CPPCHECK)
+ #     define SIG_THR_RESTART _SIGRTMIN + 5
+-- 
+2.35.1
+
diff --git a/Ports/bdwgc/patches/0005-Explicitly-link-with-pthread.patch b/Ports/bdwgc/patches/0005-Explicitly-link-with-pthread.patch
new file mode 100644
index 000000000000..4f2032c19ac9
--- /dev/null
+++ b/Ports/bdwgc/patches/0005-Explicitly-link-with-pthread.patch
@@ -0,0 +1,73 @@
+From 3c107421a9541856ba7f5a495bb3aac35a377583 Mon Sep 17 00:00:00 2001
+From: Ali Mohammad Pur <ali.mpfard@gmail.com>
+Date: Thu, 24 Feb 2022 03:47:50 +0330
+Subject: [PATCH 5/6] Explicitly link with pthread
+
+The cmakelists was using the wrong variable to link against pthread.
+---
+ CMakeLists.txt       |  5 +++--
+ tests/CMakeLists.txt | 12 ++++++------
+ 2 files changed, 9 insertions(+), 8 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index c8ebd9b..e9c52f1 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -52,7 +52,8 @@ IF(enable_threads)
+         FIND_PACKAGE(Threads REQUIRED)
+         MESSAGE(""Thread Model: ${CMAKE_THREAD_LIBS_INIT}"" )
+         INCLUDE_DIRECTORIES(${Threads_INCLUDE_DIR})
+-        SET(LIBS ${LIBS} ${Threads_LIBRARIES})
++        SET(LIBS ${LIBS} ${Threads_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
++        MESSAGE(""Libs: ${LIBS}"" )
+ ENDIF(enable_threads)
+ 
+ OPTION(enable_handle_fork ""Attempt to ensure a usable collector after fork()"" ON)
+@@ -235,7 +236,7 @@ ENDIF(enable_checksums)
+ ADD_LIBRARY(          gc-lib   STATIC      ${SRC})
+ SET_TARGET_PROPERTIES(gc-lib   PROPERTIES
+                       COMPILE_DEFINITIONS GC_NOT_DLL)
+-#TODO TARGET_LINK_LIBRARIES(...  ...  ${LIBS})
++TARGET_LINK_LIBRARIES(gc-lib  ${LIBS})
+ 
+ ADD_LIBRARY(          gcmt-dll  SHARED     ${SRC})
+ 
+diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
+index 3c84220..5e15727 100644
+--- a/tests/CMakeLists.txt
++++ b/tests/CMakeLists.txt
+@@ -23,25 +23,25 @@ SET_SOURCE_FILES_PROPERTIES(
+     PROPERTIES LANGUAGE CXX)
+ 
+ ADD_EXECUTABLE(gctest WIN32 test.c)
+-TARGET_LINK_LIBRARIES(gctest gc-lib)
++TARGET_LINK_LIBRARIES(gctest gc-lib ${LIBS})
+ ADD_TEST(NAME gctest COMMAND gctest)
+ 
+ ADD_EXECUTABLE(hugetest huge_test.c)
+-TARGET_LINK_LIBRARIES(hugetest gc-lib)
++TARGET_LINK_LIBRARIES(hugetest gc-lib ${LIBS})
+ ADD_TEST(NAME hugetest COMMAND hugetest)
+ 
+ ADD_EXECUTABLE(leaktest leak_test.c)
+-TARGET_LINK_LIBRARIES(leaktest gc-lib)
++TARGET_LINK_LIBRARIES(leaktest gc-lib ${LIBS})
+ ADD_TEST(NAME leaktest COMMAND leaktest)
+ 
+ ADD_EXECUTABLE(middletest middle.c)
+-TARGET_LINK_LIBRARIES(middletest gc-lib)
++TARGET_LINK_LIBRARIES(middletest gc-lib ${LIBS})
+ ADD_TEST(NAME middletest COMMAND middletest)
+ 
+ ADD_EXECUTABLE(realloc_test realloc_test.c)
+-TARGET_LINK_LIBRARIES(realloc_test gc-lib)
++TARGET_LINK_LIBRARIES(realloc_test gc-lib ${LIBS})
+ ADD_TEST(NAME realloc_test COMMAND realloc_test)
+ 
+ ADD_EXECUTABLE(smashtest smash_test.c)
+-TARGET_LINK_LIBRARIES(smashtest gc-lib)
++TARGET_LINK_LIBRARIES(smashtest gc-lib ${LIBS})
+ ADD_TEST(NAME smashtest COMMAND smashtest)
+-- 
+2.35.1
+
diff --git a/Ports/bdwgc/patches/0006-Make-the-collector-build-with-threads.patch b/Ports/bdwgc/patches/0006-Make-the-collector-build-with-threads.patch
new file mode 100644
index 000000000000..5e83d7d941b0
--- /dev/null
+++ b/Ports/bdwgc/patches/0006-Make-the-collector-build-with-threads.patch
@@ -0,0 +1,52 @@
+From 825f33e226dbe842fb6588ba73c31b9fbb079f11 Mon Sep 17 00:00:00 2001
+From: Ali Mohammad Pur <ali.mpfard@gmail.com>
+Date: Fri, 25 Feb 2022 04:53:53 +0330
+Subject: [PATCH 6/6] Make the collector build with threads
+
+In an extremely limited way for now:
+- No extra threads
+    More threads always lead to exactly one borked thread that's stuck
+    in no man's land, doing who-knows-what, and definitely not
+    responding to signals.
+    However, the APIs are there and they work, so they *can* be used to
+    make threads.
+- No fork handling
+    Seems borked for unknown reasons.
+---
+ CMakeLists.txt | 6 +++++-
+ tests/test.c   | 2 +-
+ 2 files changed, 6 insertions(+), 2 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index e9c52f1..7c9daad 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -56,7 +56,11 @@ IF(enable_threads)
+         MESSAGE(""Libs: ${LIBS}"" )
+ ENDIF(enable_threads)
+ 
+-OPTION(enable_handle_fork ""Attempt to ensure a usable collector after fork()"" ON)
++IF(DEBUG_THREADS)
++        ADD_DEFINITIONS(""-DDEBUG_THREADS"")
++ENDIF()
++
++OPTION(enable_handle_fork ""Attempt to ensure a usable collector after fork()"" OFF)
+ 
+ OPTION(enable_thread_local_alloc ""Turn on thread-local allocation optimization"" ON)
+ 
+diff --git a/tests/test.c b/tests/test.c
+index 8e2e3a6..f38fb22 100644
+--- a/tests/test.c
++++ b/tests/test.c
+@@ -40,7 +40,7 @@
+ #include ""gc.h""
+ 
+ #ifndef NTHREADS /* Number of additional threads to fork. */
+-#  define NTHREADS 5 /* excludes main thread, which also runs a test. */
++#  define NTHREADS 0 /* excludes main thread, which also runs a test. */
+         /* Not respected by PCR test. */
+ #endif
+ 
+-- 
+2.35.1
+
diff --git a/Ports/bdwgc/patches/ReadMe.md b/Ports/bdwgc/patches/ReadMe.md
new file mode 100644
index 000000000000..216abbd1880e
--- /dev/null
+++ b/Ports/bdwgc/patches/ReadMe.md
@@ -0,0 +1,44 @@
+# Patches for bdwgc on SerenityOS
+
+## `0001-Teach-os_dep-and-gcconfig.h-about-serenity.patch`
+
+Teach os_dep and gcconfig.h about serenity
+
+
+## `0002-Error-on-unknown-arch.patch`
+
+Error on unknown arch
+
+
+## `0003-Teach-dyn_load.c-about-serenity.patch`
+
+Teach dyn_load.c about serenity
+
+
+## `0004-Teach-bdwgc-about-serenity-signals.patch`
+
+Teach bdwgc about serenity signals
+
+Serenity doesn't have the realtime POSIX signals, so use SIGXCPU and
+SIGXFSZ instead.
+
+## `0005-Explicitly-link-with-pthread.patch`
+
+Explicitly link with pthread
+
+The cmakelists was using the wrong variable to link against pthread.
+
+## `0006-Make-the-collector-build-with-threads.patch`
+
+Make the collector build with threads
+
+In an extremely limited way for now:
+- No extra threads
+    More threads always lead to exactly one borked thread that's stuck
+    in no man's land, doing who-knows-what, and definitely not
+    responding to signals.
+    However, the APIs are there and they work, so they *can* be used to
+    make threads.
+- No fork handling
+    Seems borked for unknown reasons.
+"
1cc199d3657bfcfdb576d5fbdd786129c2dc3c63,2023-06-27 13:50:06,MacDue,libweb: Prevent crash when inspecting SVG documents,False,Prevent crash when inspecting SVG documents,libweb,"diff --git a/Userland/Libraries/LibWeb/DOM/Node.cpp b/Userland/Libraries/LibWeb/DOM/Node.cpp
index 1994d9ce759d..c67b5051a838 100644
--- a/Userland/Libraries/LibWeb/DOM/Node.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Node.cpp
@@ -1638,7 +1638,7 @@ void Node::build_accessibility_tree(AccessibilityTreeNode& parent)
     if (is_document()) {
         auto* document = static_cast<DOM::Document*>(this);
         auto* document_element = document->document_element();
-        if (document_element) {
+        if (document_element && document_element->include_in_accessibility_tree()) {
             parent.set_value(document_element);
             if (document_element->has_child_nodes())
                 document_element->for_each_child([&parent](DOM::Node& child) {
diff --git a/Userland/Libraries/LibWebView/AccessibilityTreeModel.cpp b/Userland/Libraries/LibWebView/AccessibilityTreeModel.cpp
index a847e5ef81e3..f33c92886f0c 100644
--- a/Userland/Libraries/LibWebView/AccessibilityTreeModel.cpp
+++ b/Userland/Libraries/LibWebView/AccessibilityTreeModel.cpp
@@ -93,8 +93,8 @@ GUI::Variant AccessibilityTreeModel::data(GUI::ModelIndex const& index, GUI::Mod
         if (type != ""element"")
             return node_role;
 
-        auto name = node.get_deprecated_string(""name""sv).value();
-        auto description = node.get_deprecated_string(""description""sv).value();
+        auto name = node.get_deprecated_string(""name""sv).value_or("""");
+        auto description = node.get_deprecated_string(""description""sv).value_or("""");
 
         StringBuilder builder;
         builder.append(node_role.to_lowercase());"
1de104c6c46e4aea05bb77c793c0357acfe73a84,2021-08-20 00:17:34,fladd,libcore: Fix build error in File.cpp on macOS,False,Fix build error in File.cpp on macOS,libcore,"diff --git a/Userland/Libraries/LibCore/File.cpp b/Userland/Libraries/LibCore/File.cpp
index dc2fbdf81608..24f707d07cea 100644
--- a/Userland/Libraries/LibCore/File.cpp
+++ b/Userland/Libraries/LibCore/File.cpp
@@ -481,8 +481,8 @@ Result<void, File::CopyError> File::copy_directory(String const& dst_path, Strin
 
         // FIXME: Implement utimens() and use it here.
         struct utimbuf timbuf;
-        timbuf.actime = src_stat.st_atim.tv_sec;
-        timbuf.modtime = src_stat.st_atim.tv_sec;
+        timbuf.actime = src_stat.st_atime;
+        timbuf.modtime = src_stat.st_atime;
         if (utime(dst_path.characters(), &timbuf) < 0)
             return CopyError { OSError(errno), false };
     }"
21b5909dc6c912809f0ff2fd4798f0d613b36c14,2020-04-12 02:11:05,Andrew Kaster,libelf: Move ELF classes into namespace ELF,False,Move ELF classes into namespace ELF,libelf,"diff --git a/DevTools/ProfileViewer/DisassemblyModel.cpp b/DevTools/ProfileViewer/DisassemblyModel.cpp
index ffa6c8ecfdbc..37939976ce8f 100644
--- a/DevTools/ProfileViewer/DisassemblyModel.cpp
+++ b/DevTools/ProfileViewer/DisassemblyModel.cpp
@@ -27,7 +27,7 @@
 #include ""DisassemblyModel.h""
 #include ""Profile.h""
 #include <AK/MappedFile.h>
-#include <LibELF/ELFLoader.h>
+#include <LibELF/Loader.h>
 #include <LibGUI/Painter.h>
 #include <LibX86/Disassembler.h>
 #include <ctype.h>
@@ -55,7 +55,7 @@ DisassemblyModel::DisassemblyModel(Profile& profile, ProfileNode& node)
     , m_node(node)
 {
     m_file = make<MappedFile>(profile.executable_path());
-    auto elf_loader = make<ELFLoader>((const u8*)m_file->data(), m_file->size());
+    auto elf_loader = make<ELF::Loader>((const u8*)m_file->data(), m_file->size());
 
     auto symbol = elf_loader->find_symbol(node.address());
     ASSERT(symbol.has_value());
diff --git a/DevTools/ProfileViewer/Profile.cpp b/DevTools/ProfileViewer/Profile.cpp
index d9a6c444f07d..1d19b8e341e6 100644
--- a/DevTools/ProfileViewer/Profile.cpp
+++ b/DevTools/ProfileViewer/Profile.cpp
@@ -31,7 +31,7 @@
 #include <AK/MappedFile.h>
 #include <AK/QuickSort.h>
 #include <LibCore/File.h>
-#include <LibELF/ELFLoader.h>
+#include <LibELF/Loader.h>
 #include <stdio.h>
 
 static void sort_profile_nodes(Vector<NonnullRefPtr<ProfileNode>>& nodes)
@@ -185,12 +185,12 @@ OwnPtr<Profile> Profile::load_from_perfcore_file(const StringView& path)
         return nullptr;
     }
 
-    auto elf_loader = make<ELFLoader>(static_cast<const u8*>(elf_file.data()), elf_file.size());
+    auto elf_loader = make<ELF::Loader>(static_cast<const u8*>(elf_file.data()), elf_file.size());
 
     MappedFile kernel_elf_file(""/boot/kernel"");
-    OwnPtr<ELFLoader> kernel_elf_loader;
+    OwnPtr<ELF::Loader> kernel_elf_loader;
     if (kernel_elf_file.is_valid())
-        kernel_elf_loader = make<ELFLoader>(static_cast<const u8*>(kernel_elf_file.data()), kernel_elf_file.size());
+        kernel_elf_loader = make<ELF::Loader>(static_cast<const u8*>(kernel_elf_file.data()), kernel_elf_file.size());
 
     auto events_value = object.get(""events"");
     if (!events_value.is_array())
diff --git a/Kernel/KSyms.cpp b/Kernel/KSyms.cpp
index 0512cd402212..f9af289d89d0 100644
--- a/Kernel/KSyms.cpp
+++ b/Kernel/KSyms.cpp
@@ -30,7 +30,7 @@
 #include <Kernel/KSyms.h>
 #include <Kernel/Process.h>
 #include <Kernel/Scheduler.h>
-#include <LibELF/ELFLoader.h>
+#include <LibELF/Loader.h>
 
 namespace Kernel {
 
diff --git a/Kernel/Makefile b/Kernel/Makefile
index c38060f6eee9..dd066001cbbe 100644
--- a/Kernel/Makefile
+++ b/Kernel/Makefile
@@ -9,8 +9,8 @@ OBJS = \
     ../AK/StringImpl.o \
     ../AK/StringUtils.o \
     ../AK/StringView.o \
-    ../Libraries/LibELF/ELFImage.o \
-    ../Libraries/LibELF/ELFLoader.o \
+    ../Libraries/LibELF/Image.o \
+    ../Libraries/LibELF/Loader.o \
     ../Libraries/LibBareMetal/Output/Console.o \
     ../Libraries/LibBareMetal/Output/kprintf.o \
     ../Libraries/LibBareMetal/StdLib.o \
diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index 3466e8e7e8e6..f0201e179385 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -77,7 +77,7 @@
 #include <LibC/errno_numbers.h>
 #include <LibC/limits.h>
 #include <LibC/signal_numbers.h>
-#include <LibELF/ELFLoader.h>
+#include <LibELF/Loader.h>
 
 //#define PROCESS_DEBUG
 //#define DEBUG_POLL_SELECT
@@ -856,7 +856,7 @@ int Process::do_exec(NonnullRefPtr<FileDescription> main_program_description, Ve
     u32 entry_eip = 0;
 
     MM.enter_process_paging_scope(*this);
-    OwnPtr<ELFLoader> loader;
+    OwnPtr<ELF::Loader> loader;
     {
         ArmedScopeGuard rollback_regions_guard([&]() {
             ASSERT(Process::current == this);
@@ -864,7 +864,7 @@ int Process::do_exec(NonnullRefPtr<FileDescription> main_program_description, Ve
             m_regions = move(old_regions);
             MM.enter_process_paging_scope(*this);
         });
-        loader = make<ELFLoader>(region->vaddr().as_ptr(), loader_metadata.size);
+        loader = make<ELF::Loader>(region->vaddr().as_ptr(), loader_metadata.size);
         // Load the correct executable -- either interp or main program.
         // FIXME: Once we actually load both interp and main, we'll need to be more clever about this.
         //     In that case, both will be ET_DYN objects, so they'll both be completely relocatable.
@@ -1084,14 +1084,14 @@ KResultOr<NonnullRefPtr<FileDescription>> Process::find_elf_interpreter_for_exec
         return KResult(-ENOEXEC);
 
     auto elf_header = (Elf32_Ehdr*)first_page;
-    if (!ELFImage::validate_elf_header(*elf_header, file_size)) {
+    if (!ELF::Image::validate_elf_header(*elf_header, file_size)) {
         dbg() << ""exec("" << path << ""): File has invalid ELF header"";
         return KResult(-ENOEXEC);
     }
 
     // Not using KResultOr here because we'll want to do the same thing in userspace in the RTLD
     String interpreter_path;
-    if (!ELFImage::validate_program_headers(*elf_header, file_size, (u8*)first_page, nread, interpreter_path)) {
+    if (!ELF::Image::validate_program_headers(*elf_header, file_size, (u8*)first_page, nread, interpreter_path)) {
         dbg() << ""exec("" << path << ""): File has invalid ELF Program headers"";
         return KResult(-ENOEXEC);
     }
@@ -1124,14 +1124,14 @@ KResultOr<NonnullRefPtr<FileDescription>> Process::find_elf_interpreter_for_exec
             return KResult(-ENOEXEC);
 
         elf_header = (Elf32_Ehdr*)first_page;
-        if (!ELFImage::validate_elf_header(*elf_header, interp_metadata.size)) {
+        if (!ELF::Image::validate_elf_header(*elf_header, interp_metadata.size)) {
             dbg() << ""exec("" << path << ""): Interpreter ("" << interpreter_description->absolute_path() << "") has invalid ELF header"";
             return KResult(-ENOEXEC);
         }
 
         // Not using KResultOr here because we'll want to do the same thing in userspace in the RTLD
         String interpreter_interpreter_path;
-        if (!ELFImage::validate_program_headers(*elf_header, interp_metadata.size, (u8*)first_page, nread, interpreter_interpreter_path)) {
+        if (!ELF::Image::validate_program_headers(*elf_header, interp_metadata.size, (u8*)first_page, nread, interpreter_interpreter_path)) {
             dbg() << ""exec("" << path << ""): Interpreter ("" << interpreter_description->absolute_path() << "") has invalid ELF Program headers"";
             return KResult(-ENOEXEC);
         }
@@ -4378,7 +4378,7 @@ int Process::sys$module_load(const char* user_path, size_t path_length)
     memcpy(storage.data(), payload.data(), payload.size());
     payload.clear();
 
-    auto elf_image = make<ELFImage>(storage.data(), storage.size());
+    auto elf_image = make<ELF::Image>(storage.data(), storage.size());
     if (!elf_image->parse())
         return -ENOEXEC;
 
@@ -4386,7 +4386,7 @@ int Process::sys$module_load(const char* user_path, size_t path_length)
 
     auto module = make<Module>();
 
-    elf_image->for_each_section_of_type(SHT_PROGBITS, [&](const ELFImage::Section& section) {
+    elf_image->for_each_section_of_type(SHT_PROGBITS, [&](const ELF::Image::Section& section) {
         if (!section.size())
             return IterationDecision::Continue;
         auto section_storage = KBuffer::copy(section.raw_data(), section.size(), Region::Access::Read | Region::Access::Write | Region::Access::Execute);
@@ -4397,12 +4397,12 @@ int Process::sys$module_load(const char* user_path, size_t path_length)
 
     bool missing_symbols = false;
 
-    elf_image->for_each_section_of_type(SHT_PROGBITS, [&](const ELFImage::Section& section) {
+    elf_image->for_each_section_of_type(SHT_PROGBITS, [&](const ELF::Image::Section& section) {
         if (!section.size())
             return IterationDecision::Continue;
         auto* section_storage = section_storage_by_name.get(section.name()).value_or(nullptr);
         ASSERT(section_storage);
-        section.relocations().for_each_relocation([&](const ELFImage::Relocation& relocation) {
+        section.relocations().for_each_relocation([&](const ELF::Image::Relocation& relocation) {
             auto& patch_ptr = *reinterpret_cast<ptrdiff_t*>(section_storage + relocation.offset());
             switch (relocation.type()) {
             case R_386_PC32: {
@@ -4453,7 +4453,7 @@ int Process::sys$module_load(const char* user_path, size_t path_length)
         return -EINVAL;
     }
 
-    elf_image->for_each_symbol([&](const ELFImage::Symbol& symbol) {
+    elf_image->for_each_symbol([&](const ELF::Image::Symbol& symbol) {
         dbg() << "" - "" << symbol.type() << "" '"" << symbol.name() << ""' @ "" << (void*)symbol.value() << "", size="" << symbol.size();
         if (symbol.name() == ""module_init"") {
             module->module_init = (ModuleInitPtr)(text_base + symbol.value());
@@ -4845,7 +4845,7 @@ OwnPtr<Process::ELFBundle> Process::elf_bundle() const
     bundle->region = MM.allocate_kernel_region_with_vmobject(const_cast<SharedInodeVMObject&>(vmobject), vmobject.size(), ""ELF bundle"", Region::Access::Read);
     if (!bundle->region)
         return nullptr;
-    bundle->elf_loader = make<ELFLoader>(bundle->region->vaddr().as_ptr(), bundle->region->size());
+    bundle->elf_loader = make<ELF::Loader>(bundle->region->vaddr().as_ptr(), bundle->region->size());
     return bundle;
 }
 
diff --git a/Kernel/Process.h b/Kernel/Process.h
index 0ea441a994e6..259b164144b8 100644
--- a/Kernel/Process.h
+++ b/Kernel/Process.h
@@ -41,7 +41,9 @@
 #include <Kernel/VM/RangeAllocator.h>
 #include <LibC/signal_numbers.h>
 
-class ELFLoader;
+namespace ELF {
+class Loader;
+}
 
 namespace Kernel {
 
@@ -387,7 +389,7 @@ class Process : public InlineLinkedListNode<Process> {
 
     struct ELFBundle {
         OwnPtr<Region> region;
-        OwnPtr<ELFLoader> elf_loader;
+        OwnPtr<ELF::Loader> elf_loader;
     };
     OwnPtr<ELFBundle> elf_bundle() const;
 
diff --git a/Kernel/Profiling.cpp b/Kernel/Profiling.cpp
index dba5cb871002..f7e247f52989 100644
--- a/Kernel/Profiling.cpp
+++ b/Kernel/Profiling.cpp
@@ -31,7 +31,7 @@
 #include <Kernel/KSyms.h>
 #include <Kernel/Process.h>
 #include <Kernel/Profiling.h>
-#include <LibELF/ELFLoader.h>
+#include <LibELF/Loader.h>
 
 namespace Kernel {
 
diff --git a/Kernel/Thread.cpp b/Kernel/Thread.cpp
index 745667e9872a..1e0e87130972 100644
--- a/Kernel/Thread.cpp
+++ b/Kernel/Thread.cpp
@@ -38,7 +38,7 @@
 #include <Kernel/VM/PageDirectory.h>
 #include <Kernel/VM/ProcessPagingScope.h>
 #include <LibC/signal_numbers.h>
-#include <LibELF/ELFLoader.h>
+#include <LibELF/Loader.h>
 
 //#define SIGNAL_DEBUG
 //#define THREAD_DEBUG
diff --git a/Libraries/LibC/Makefile b/Libraries/LibC/Makefile
index 6705d0547592..8182fb8e4095 100644
--- a/Libraries/LibC/Makefile
+++ b/Libraries/LibC/Makefile
@@ -61,10 +61,10 @@ LIBC_OBJS = \
        libcinit.o
 
 ELF_OBJS = \
-        ../LibELF/ELFDynamicObject.o \
-        ../LibELF/ELFDynamicLoader.o \
-        ../LibELF/ELFLoader.o \
-        ../LibELF/ELFImage.o
+        ../LibELF/DynamicObject.o \
+        ../LibELF/DynamicLoader.o \
+        ../LibELF/Loader.o \
+        ../LibELF/Image.o
 
 OBJS = $(AK_OBJS) $(LIBC_OBJS) $(ELF_OBJS)
 
diff --git a/Libraries/LibC/dlfcn.cpp b/Libraries/LibC/dlfcn.cpp
index 9531511525bc..d6be5d886774 100644
--- a/Libraries/LibC/dlfcn.cpp
+++ b/Libraries/LibC/dlfcn.cpp
@@ -38,12 +38,12 @@
 #include <AK/ScopeGuard.h>
 #include <AK/String.h>
 #include <AK/StringBuilder.h>
-#include <LibELF/ELFDynamicLoader.h>
+#include <LibELF/DynamicLoader.h>
 
 // NOTE: The string here should never include a trailing newline (according to POSIX)
 String g_dlerror_msg;
 
-HashMap<String, RefPtr<ELFDynamicLoader>> g_elf_objects;
+HashMap<String, RefPtr<ELF::DynamicLoader>> g_elf_objects;
 
 extern ""C"" {
 
@@ -74,7 +74,7 @@ void* dlopen(const char* filename, int flags)
 
     auto existing_elf_object = g_elf_objects.get(file_path.basename());
     if (existing_elf_object.has_value()) {
-        return const_cast<ELFDynamicLoader*>(existing_elf_object.value());
+        return const_cast<ELF::DynamicLoader*>(existing_elf_object.value());
     }
 
     int fd = open(filename, O_RDONLY);
@@ -93,7 +93,7 @@ void* dlopen(const char* filename, int flags)
         return nullptr;
     }
 
-    auto loader = ELFDynamicLoader::construct(filename, fd, file_stats.st_size);
+    auto loader = ELF::DynamicLoader::construct(filename, fd, file_stats.st_size);
 
     if (!loader->is_valid()) {
         g_dlerror_msg = String::format(""%s is not a valid ELF dynamic shared object!"", filename);
@@ -109,14 +109,14 @@ void* dlopen(const char* filename, int flags)
     g_dlerror_msg = ""Successfully loaded ELF object."";
 
     // we have one refcount already
-    return const_cast<ELFDynamicLoader*>(g_elf_objects.get(file_path.basename()).value());
+    return const_cast<ELF::DynamicLoader*>(g_elf_objects.get(file_path.basename()).value());
 }
 
 void* dlsym(void* handle, const char* symbol_name)
 {
     // FIXME: When called with a NULL handle we're supposed to search every dso in the process... that'll get expensive
     ASSERT(handle);
-    auto* dso = reinterpret_cast<ELFDynamicLoader*>(handle);
+    auto* dso = reinterpret_cast<ELF::DynamicLoader*>(handle);
     void* symbol = dso->symbol_for_name(symbol_name);
     if (!symbol) {
         g_dlerror_msg = ""Symbol not found"";
diff --git a/Libraries/LibELF/ELFDynamicLoader.cpp b/Libraries/LibELF/DynamicLoader.cpp
similarity index 89%
rename from Libraries/LibELF/ELFDynamicLoader.cpp
rename to Libraries/LibELF/DynamicLoader.cpp
index 836972237e0a..78e94644bc84 100644
--- a/Libraries/LibELF/ELFDynamicLoader.cpp
+++ b/Libraries/LibELF/DynamicLoader.cpp
@@ -25,7 +25,7 @@
  */
 
 #include <AK/StringBuilder.h>
-#include <LibELF/ELFDynamicLoader.h>
+#include <LibELF/DynamicLoader.h>
 
 #include <assert.h>
 #include <dlfcn.h>
@@ -45,14 +45,16 @@
         } while (0)
 #endif
 
+namespace ELF {
+
 static bool s_always_bind_now = false;
 
-NonnullRefPtr<ELFDynamicLoader> ELFDynamicLoader::construct(const char* filename, int fd, size_t size)
+NonnullRefPtr<DynamicLoader> DynamicLoader::construct(const char* filename, int fd, size_t size)
 {
-    return adopt(*new ELFDynamicLoader(filename, fd, size));
+    return adopt(*new DynamicLoader(filename, fd, size));
 }
 
-ELFDynamicLoader::ELFDynamicLoader(const char* filename, int fd, size_t size)
+DynamicLoader::DynamicLoader(const char* filename, int fd, size_t size)
     : m_filename(filename)
     , m_file_size(size)
     , m_image_fd(fd)
@@ -65,13 +67,13 @@ ELFDynamicLoader::ELFDynamicLoader(const char* filename, int fd, size_t size)
     }
 }
 
-ELFDynamicLoader::~ELFDynamicLoader()
+DynamicLoader::~DynamicLoader()
 {
     if (MAP_FAILED != m_file_mapping)
         munmap(m_file_mapping, m_file_size);
 }
 
-void* ELFDynamicLoader::symbol_for_name(const char* name)
+void* DynamicLoader::symbol_for_name(const char* name)
 {
     auto symbol = m_dynamic_object->hash_section().lookup_symbol(name);
 
@@ -81,9 +83,9 @@ void* ELFDynamicLoader::symbol_for_name(const char* name)
     return m_dynamic_object->base_address().offset(symbol.value()).as_ptr();
 }
 
-bool ELFDynamicLoader::load_from_image(unsigned flags)
+bool DynamicLoader::load_from_image(unsigned flags)
 {
-    ELFImage elf_image((u8*)m_file_mapping, m_file_size);
+    Image elf_image((u8*)m_file_mapping, m_file_size);
 
     m_valid = elf_image.is_valid() && elf_image.is_dynamic();
 
@@ -101,12 +103,12 @@ bool ELFDynamicLoader::load_from_image(unsigned flags)
     munmap(m_file_mapping, m_file_size);
     m_file_mapping = MAP_FAILED;
 
-    m_dynamic_object = AK::make<ELFDynamicObject>(m_text_segment_load_address, m_dynamic_section_address);
+    m_dynamic_object = AK::make<DynamicObject>(m_text_segment_load_address, m_dynamic_section_address);
 
     return load_stage_2(flags);
 }
 
-bool ELFDynamicLoader::load_stage_2(unsigned flags)
+bool DynamicLoader::load_stage_2(unsigned flags)
 {
     ASSERT(flags & RTLD_GLOBAL);
     ASSERT(flags & RTLD_LAZY);
@@ -143,7 +145,7 @@ bool ELFDynamicLoader::load_stage_2(unsigned flags)
     return true;
 }
 
-void ELFDynamicLoader::load_program_headers(const ELFImage& elf_image)
+void DynamicLoader::load_program_headers(const Image& elf_image)
 {
     Vector<ProgramHeaderRegion> program_headers;
 
@@ -152,7 +154,7 @@ void ELFDynamicLoader::load_program_headers(const ELFImage& elf_image)
     ProgramHeaderRegion* tls_region_ptr = nullptr;
     VirtualAddress dynamic_region_desired_vaddr;
 
-    elf_image.for_each_program_header([&](const ELFImage::ProgramHeader& program_header) {
+    elf_image.for_each_program_header([&](const Image::ProgramHeader& program_header) {
         ProgramHeaderRegion new_region;
         new_region.set_program_header(program_header.raw_header());
         program_headers.append(move(new_region));
@@ -200,7 +202,7 @@ void ELFDynamicLoader::load_program_headers(const ELFImage& elf_image)
     }
 }
 
-void ELFDynamicLoader::do_relocations()
+void DynamicLoader::do_relocations()
 {
     u32 load_base_address = m_dynamic_object->base_address().get();
 
@@ -208,7 +210,7 @@ void ELFDynamicLoader::do_relocations()
 
     auto main_relocation_section = m_dynamic_object->relocation_section();
 
-    main_relocation_section.for_each_relocation([&](const ELFDynamicObject::Relocation& relocation) {
+    main_relocation_section.for_each_relocation([&](const DynamicObject::Relocation& relocation) {
         VERBOSE(""====== RELOCATION %d: offset 0x%08X, type %d, symidx %08X\n"", relocation.offset_in_section() / main_relocation_section.entry_size(), relocation.offset(), relocation.type(), relocation.symbol_index());
         u32* patch_ptr = (u32*)(load_base_address + relocation.offset());
         switch (relocation.type()) {
@@ -260,7 +262,7 @@ void ELFDynamicLoader::do_relocations()
         default:
             // Raise the alarm! Someone needs to implement this relocation type
             dbgprintf(""Found a new exciting relocation type %d\n"", relocation.type());
-            printf(""ELFDynamicLoader: Found unknown relocation type %d\n"", relocation.type());
+            printf(""DynamicLoader: Found unknown relocation type %d\n"", relocation.type());
             ASSERT_NOT_REACHED();
             break;
         }
@@ -268,7 +270,7 @@ void ELFDynamicLoader::do_relocations()
     });
 
     // Handle PLT Global offset table relocations.
-    m_dynamic_object->plt_relocation_section().for_each_relocation([&](const ELFDynamicObject::Relocation& relocation) {
+    m_dynamic_object->plt_relocation_section().for_each_relocation([&](const DynamicObject::Relocation& relocation) {
         // FIXME: Or BIND_NOW flag passed in?
         if (m_dynamic_object->must_bind_now() || s_always_bind_now) {
             // Eagerly BIND_NOW the PLT entries, doing all the symbol looking goodness
@@ -294,7 +296,7 @@ void ELFDynamicLoader::do_relocations()
 // Defined in <arch>/plt_trampoline.S
 extern ""C"" void _plt_trampoline(void) __attribute__((visibility(""hidden"")));
 
-void ELFDynamicLoader::setup_plt_trampoline()
+void DynamicLoader::setup_plt_trampoline()
 {
     VirtualAddress got_address = m_dynamic_object->plt_got_base_address();
 
@@ -308,13 +310,13 @@ void ELFDynamicLoader::setup_plt_trampoline()
 }
 
 // Called from our ASM routine _plt_trampoline
-extern ""C"" Elf32_Addr _fixup_plt_entry(ELFDynamicLoader* object, u32 relocation_offset)
+extern ""C"" Elf32_Addr _fixup_plt_entry(DynamicLoader* object, u32 relocation_offset)
 {
     return object->patch_plt_entry(relocation_offset);
 }
 
 // offset is in PLT relocation table
-Elf32_Addr ELFDynamicLoader::patch_plt_entry(u32 relocation_offset)
+Elf32_Addr DynamicLoader::patch_plt_entry(u32 relocation_offset)
 {
     auto relocation = m_dynamic_object->plt_relocation_section().relocation_at_offset(relocation_offset);
 
@@ -325,14 +327,14 @@ Elf32_Addr ELFDynamicLoader::patch_plt_entry(u32 relocation_offset)
     u8* relocation_address = relocation.address().as_ptr();
     u32 symbol_location = sym.address().get();
 
-    VERBOSE(""ELFDynamicLoader: Jump slot relocation: putting %s (%p) into PLT at %p\n"", sym.name(), symbol_location, relocation_address);
+    VERBOSE(""DynamicLoader: Jump slot relocation: putting %s (%p) into PLT at %p\n"", sym.name(), symbol_location, relocation_address);
 
     *(u32*)relocation_address = symbol_location;
 
     return symbol_location;
 }
 
-void ELFDynamicLoader::call_object_init_functions()
+void DynamicLoader::call_object_init_functions()
 {
     typedef void (*InitFunc)();
     auto init_function = (InitFunc)(m_dynamic_object->init_section().address().as_ptr());
@@ -359,7 +361,7 @@ void ELFDynamicLoader::call_object_init_functions()
     }
 }
 
-u32 ELFDynamicLoader::ProgramHeaderRegion::mmap_prot() const
+u32 DynamicLoader::ProgramHeaderRegion::mmap_prot() const
 {
     int prot = 0;
     prot |= is_executable() ? PROT_EXEC : 0;
@@ -367,3 +369,5 @@ u32 ELFDynamicLoader::ProgramHeaderRegion::mmap_prot() const
     prot |= is_writable() ? PROT_WRITE : 0;
     return prot;
 }
+
+} // end namespace ELF
diff --git a/Libraries/LibELF/ELFDynamicLoader.h b/Libraries/LibELF/DynamicLoader.h
similarity index 88%
rename from Libraries/LibELF/ELFDynamicLoader.h
rename to Libraries/LibELF/DynamicLoader.h
index c3932714d485..94174fb9fcc6 100644
--- a/Libraries/LibELF/ELFDynamicLoader.h
+++ b/Libraries/LibELF/DynamicLoader.h
@@ -30,22 +30,24 @@
 #include <AK/OwnPtr.h>
 #include <AK/RefCounted.h>
 #include <AK/String.h>
-#include <LibELF/ELFDynamicObject.h>
-#include <LibELF/ELFImage.h>
+#include <LibELF/DynamicObject.h>
+#include <LibELF/Image.h>
 #include <LibELF/exec_elf.h>
 #include <sys/mman.h>
 
+namespace ELF {
+
 #define ALIGN_ROUND_UP(x, align) ((((size_t)(x)) + align - 1) & (~(align - 1)))
 
-class ELFDynamicLoader : public RefCounted<ELFDynamicLoader> {
+class DynamicLoader : public RefCounted<DynamicLoader> {
 public:
-    static NonnullRefPtr<ELFDynamicLoader> construct(const char* filename, int fd, size_t file_size);
+    static NonnullRefPtr<DynamicLoader> construct(const char* filename, int fd, size_t file_size);
 
-    ~ELFDynamicLoader();
+    ~DynamicLoader();
 
     bool is_valid() const { return m_valid; }
 
-    // Load a full ELF image from file into the current process and create an ELFDynamicObject
+    // Load a full ELF image from file into the current process and create an DynamicObject
     // from the SHT_DYNAMIC in the file.
     bool load_from_image(unsigned flags);
 
@@ -89,11 +91,11 @@ class ELFDynamicLoader : public RefCounted<ELFDynamicLoader> {
         Elf32_Phdr m_program_header; // Explictly a copy of the PHDR in the image
     };
 
-    explicit ELFDynamicLoader(const char* filename, int fd, size_t file_size);
-    explicit ELFDynamicLoader(Elf32_Dyn* dynamic_location, Elf32_Addr load_address);
+    explicit DynamicLoader(const char* filename, int fd, size_t file_size);
+    explicit DynamicLoader(Elf32_Dyn* dynamic_location, Elf32_Addr load_address);
 
     // Stage 1
-    void load_program_headers(const ELFImage& elf_image);
+    void load_program_headers(const Image& elf_image);
 
     // Stage 2
     void do_relocations();
@@ -106,7 +108,7 @@ class ELFDynamicLoader : public RefCounted<ELFDynamicLoader> {
     void* m_file_mapping { nullptr };
     bool m_valid { true };
 
-    OwnPtr<ELFDynamicObject> m_dynamic_object;
+    OwnPtr<DynamicObject> m_dynamic_object;
 
     VirtualAddress m_text_segment_load_address;
     size_t m_text_segment_size;
@@ -114,3 +116,5 @@ class ELFDynamicLoader : public RefCounted<ELFDynamicLoader> {
     VirtualAddress m_tls_segment_address;
     VirtualAddress m_dynamic_section_address;
 };
+
+} // end namespace ELF
diff --git a/Libraries/LibELF/ELFDynamicObject.cpp b/Libraries/LibELF/DynamicObject.cpp
similarity index 87%
rename from Libraries/LibELF/ELFDynamicObject.cpp
rename to Libraries/LibELF/DynamicObject.cpp
index 385de9e3bec5..e1fc93be8836 100644
--- a/Libraries/LibELF/ELFDynamicObject.cpp
+++ b/Libraries/LibELF/DynamicObject.cpp
@@ -26,31 +26,33 @@
 
 #include <AK/String.h>
 #include <AK/StringBuilder.h>
-#include <LibELF/ELFDynamicObject.h>
+#include <LibELF/DynamicObject.h>
 #include <LibELF/exec_elf.h>
 #include <stdio.h>
 #include <string.h>
 
+namespace ELF {
+
 static const char* name_for_dtag(Elf32_Sword d_tag);
 
-ELFDynamicObject::ELFDynamicObject(VirtualAddress base_address, VirtualAddress dynamic_section_addresss)
+DynamicObject::DynamicObject(VirtualAddress base_address, VirtualAddress dynamic_section_addresss)
     : m_base_address(base_address)
     , m_dynamic_address(dynamic_section_addresss)
 {
     parse();
 }
 
-ELFDynamicObject::~ELFDynamicObject()
+DynamicObject::~DynamicObject()
 {
 }
 
-void ELFDynamicObject::dump() const
+void DynamicObject::dump() const
 {
     StringBuilder builder;
     builder.append(""\nd_tag      tag_name         value\n"");
     size_t num_dynamic_sections = 0;
 
-    for_each_dynamic_entry([&](const ELFDynamicObject::DynamicEntry& entry) {
+    for_each_dynamic_entry([&](const DynamicObject::DynamicEntry& entry) {
         String name_field = String::format(""(%s)"", name_for_dtag(entry.tag()));
         builder.appendf(""0x%08X %-17s0x%X\n"", entry.tag(), name_field.characters(), entry.val());
         num_dynamic_sections++;
@@ -61,7 +63,7 @@ void ELFDynamicObject::dump() const
     dbgprintf(builder.to_string().characters());
 }
 
-void ELFDynamicObject::parse()
+void DynamicObject::parse()
 {
     for_each_dynamic_entry([&](const DynamicEntry& entry) {
         switch (entry.tag()) {
@@ -134,8 +136,8 @@ void ELFDynamicObject::parse()
             m_dt_flags |= DF_TEXTREL; // This tag seems to exist for legacy reasons only?
             break;
         default:
-            dbgprintf(""ELFDynamicObject: DYNAMIC tag handling not implemented for DT_%s\n"", name_for_dtag(entry.tag()));
-            printf(""ELFDynamicObject: DYNAMIC tag handling not implemented for DT_%s\n"", name_for_dtag(entry.tag()));
+            dbgprintf(""DynamicObject: DYNAMIC tag handling not implemented for DT_%s\n"", name_for_dtag(entry.tag()));
+            printf(""DynamicObject: DYNAMIC tag handling not implemented for DT_%s\n"", name_for_dtag(entry.tag()));
             ASSERT_NOT_REACHED(); // FIXME: Maybe just break out here and return false?
             break;
         }
@@ -147,7 +149,7 @@ void ELFDynamicObject::parse()
     m_symbol_count = num_hash_chains;
 }
 
-const ELFDynamicObject::Relocation ELFDynamicObject::RelocationSection::relocation(unsigned index) const
+const DynamicObject::Relocation DynamicObject::RelocationSection::relocation(unsigned index) const
 {
     ASSERT(index < entry_count());
     unsigned offset_in_section = index * entry_size();
@@ -155,56 +157,56 @@ const ELFDynamicObject::Relocation ELFDynamicObject::RelocationSection::relocati
     return Relocation(m_dynamic, *relocation_address, offset_in_section);
 }
 
-const ELFDynamicObject::Relocation ELFDynamicObject::RelocationSection::relocation_at_offset(unsigned offset) const
+const DynamicObject::Relocation DynamicObject::RelocationSection::relocation_at_offset(unsigned offset) const
 {
     ASSERT(offset <= (m_section_size_bytes - m_entry_size));
     auto relocation_address = (Elf32_Rel*)address().offset(offset).as_ptr();
     return Relocation(m_dynamic, *relocation_address, offset);
 }
 
-const ELFDynamicObject::Symbol ELFDynamicObject::symbol(unsigned index) const
+const DynamicObject::Symbol DynamicObject::symbol(unsigned index) const
 {
     auto symbol_section = Section(*this, m_symbol_table_offset, (m_symbol_count * m_size_of_symbol_table_entry), m_size_of_symbol_table_entry, ""DT_SYMTAB"");
     auto symbol_entry = (Elf32_Sym*)symbol_section.address().offset(index * symbol_section.entry_size()).as_ptr();
     return Symbol(*this, index, *symbol_entry);
 }
 
-const ELFDynamicObject::Section ELFDynamicObject::init_section() const
+const DynamicObject::Section DynamicObject::init_section() const
 {
     return Section(*this, m_init_offset, sizeof(void (*)()), sizeof(void (*)()), ""DT_INIT"");
 }
 
-const ELFDynamicObject::Section ELFDynamicObject::fini_section() const
+const DynamicObject::Section DynamicObject::fini_section() const
 {
     return Section(*this, m_fini_offset, sizeof(void (*)()), sizeof(void (*)()), ""DT_FINI"");
 }
 
-const ELFDynamicObject::Section ELFDynamicObject::init_array_section() const
+const DynamicObject::Section DynamicObject::init_array_section() const
 {
     return Section(*this, m_init_array_offset, m_init_array_size, sizeof(void (*)()), ""DT_INIT_ARRAY"");
 }
 
-const ELFDynamicObject::Section ELFDynamicObject::fini_array_section() const
+const DynamicObject::Section DynamicObject::fini_array_section() const
 {
     return Section(*this, m_fini_array_offset, m_fini_array_size, sizeof(void (*)()), ""DT_FINI_ARRAY"");
 }
 
-const ELFDynamicObject::HashSection ELFDynamicObject::hash_section() const
+const DynamicObject::HashSection DynamicObject::hash_section() const
 {
     return HashSection(Section(*this, m_hash_table_offset, 0, 0, ""DT_HASH""), HashType::SYSV);
 }
 
-const ELFDynamicObject::RelocationSection ELFDynamicObject::relocation_section() const
+const DynamicObject::RelocationSection DynamicObject::relocation_section() const
 {
     return RelocationSection(Section(*this, m_relocation_table_offset, m_size_of_relocation_table, m_size_of_relocation_entry, ""DT_REL""));
 }
 
-const ELFDynamicObject::RelocationSection ELFDynamicObject::plt_relocation_section() const
+const DynamicObject::RelocationSection DynamicObject::plt_relocation_section() const
 {
     return RelocationSection(Section(*this, m_plt_relocation_offset_location, m_size_of_plt_relocation_entry_list, m_size_of_relocation_entry, ""DT_JMPREL""));
 }
 
-u32 ELFDynamicObject::HashSection::calculate_elf_hash(const char* name) const
+u32 DynamicObject::HashSection::calculate_elf_hash(const char* name) const
 {
     // SYSV ELF hash algorithm
     // Note that the GNU HASH algorithm has less collisions
@@ -226,13 +228,13 @@ u32 ELFDynamicObject::HashSection::calculate_elf_hash(const char* name) const
     return hash;
 }
 
-u32 ELFDynamicObject::HashSection::calculate_gnu_hash(const char*) const
+u32 DynamicObject::HashSection::calculate_gnu_hash(const char*) const
 {
     // FIXME: Implement the GNU hash algorithm
     ASSERT_NOT_REACHED();
 }
 
-const ELFDynamicObject::Symbol ELFDynamicObject::HashSection::lookup_symbol(const char* name) const
+const DynamicObject::Symbol DynamicObject::HashSection::lookup_symbol(const char* name) const
 {
     // FIXME: If we enable gnu hash in the compiler, we should use that here instead
     //     The algo is way better with less collisions
@@ -262,7 +264,7 @@ const ELFDynamicObject::Symbol ELFDynamicObject::HashSection::lookup_symbol(cons
     return m_dynamic.the_undefined_symbol();
 }
 
-const char* ELFDynamicObject::symbol_string_table_string(Elf32_Word index) const
+const char* DynamicObject::symbol_string_table_string(Elf32_Word index) const
 {
     return (const char*)base_address().offset(m_string_table_offset + index).as_ptr();
 }
@@ -358,3 +360,5 @@ static const char* name_for_dtag(Elf32_Sword d_tag)
         return ""??"";
     }
 }
+
+} // end namespace ELF
diff --git a/Libraries/LibELF/ELFDynamicObject.h b/Libraries/LibELF/DynamicObject.h
similarity index 92%
rename from Libraries/LibELF/ELFDynamicObject.h
rename to Libraries/LibELF/DynamicObject.h
index 8618d721d0e3..d37869e4f9ca 100644
--- a/Libraries/LibELF/ELFDynamicObject.h
+++ b/Libraries/LibELF/DynamicObject.h
@@ -30,10 +30,12 @@
 #include <LibBareMetal/Memory/VirtualAddress.h>
 #include <LibELF/exec_elf.h>
 
-class ELFDynamicObject {
+namespace ELF {
+
+class DynamicObject {
 public:
-    explicit ELFDynamicObject(VirtualAddress base_address, VirtualAddress dynamic_section_address);
-    ~ELFDynamicObject();
+    explicit DynamicObject(VirtualAddress base_address, VirtualAddress dynamic_section_address);
+    ~DynamicObject();
     void dump() const;
 
     class DynamicEntry;
@@ -62,7 +64,7 @@ class ELFDynamicObject {
 
     class Symbol {
     public:
-        Symbol(const ELFDynamicObject& dynamic, unsigned index, const Elf32_Sym& sym)
+        Symbol(const DynamicObject& dynamic, unsigned index, const Elf32_Sym& sym)
             : m_dynamic(dynamic)
             , m_sym(sym)
             , m_index(index)
@@ -82,14 +84,14 @@ class ELFDynamicObject {
         VirtualAddress address() const { return m_dynamic.base_address().offset(value()); }
 
     private:
-        const ELFDynamicObject& m_dynamic;
+        const DynamicObject& m_dynamic;
         const Elf32_Sym& m_sym;
         const unsigned m_index;
     };
 
     class Section {
     public:
-        Section(const ELFDynamicObject& dynamic, unsigned section_offset, unsigned section_size_bytes, unsigned entry_size, const char* name)
+        Section(const DynamicObject& dynamic, unsigned section_offset, unsigned section_size_bytes, unsigned entry_size, const char* name)
             : m_dynamic(dynamic)
             , m_section_offset(section_offset)
             , m_section_size_bytes(section_size_bytes)
@@ -109,7 +111,7 @@ class ELFDynamicObject {
     protected:
         friend class RelocationSection;
         friend class HashSection;
-        const ELFDynamicObject& m_dynamic;
+        const DynamicObject& m_dynamic;
         unsigned m_section_offset;
         unsigned m_section_size_bytes;
         unsigned m_entry_size;
@@ -131,7 +133,7 @@ class ELFDynamicObject {
 
     class Relocation {
     public:
-        Relocation(const ELFDynamicObject& dynamic, const Elf32_Rel& rel, unsigned offset_in_section)
+        Relocation(const DynamicObject& dynamic, const Elf32_Rel& rel, unsigned offset_in_section)
             : m_dynamic(dynamic)
             , m_rel(rel)
             , m_offset_in_section(offset_in_section)
@@ -148,7 +150,7 @@ class ELFDynamicObject {
         VirtualAddress address() const { return m_dynamic.base_address().offset(offset()); }
 
     private:
-        const ELFDynamicObject& m_dynamic;
+        const DynamicObject& m_dynamic;
         const Elf32_Rel& m_rel;
         const unsigned m_offset_in_section;
     };
@@ -261,7 +263,7 @@ class ELFDynamicObject {
 };
 
 template<typename F>
-inline void ELFDynamicObject::RelocationSection::for_each_relocation(F func) const
+inline void DynamicObject::RelocationSection::for_each_relocation(F func) const
 {
     for (unsigned i = 0; i < relocation_count(); ++i) {
         if (func(relocation(i)) == IterationDecision::Break)
@@ -270,7 +272,7 @@ inline void ELFDynamicObject::RelocationSection::for_each_relocation(F func) con
 }
 
 template<typename F>
-inline void ELFDynamicObject::for_each_symbol(F func) const
+inline void DynamicObject::for_each_symbol(F func) const
 {
     for (unsigned i = 0; i < symbol_count(); ++i) {
         if (func(symbol(i)) == IterationDecision::Break)
@@ -279,7 +281,7 @@ inline void ELFDynamicObject::for_each_symbol(F func) const
 }
 
 template<typename F>
-inline void ELFDynamicObject::for_each_dynamic_entry(F func) const
+inline void DynamicObject::for_each_dynamic_entry(F func) const
 {
     auto* dyns = reinterpret_cast<const Elf32_Dyn*>(m_dynamic_address.as_ptr());
     for (unsigned i = 0;; ++i) {
@@ -290,3 +292,5 @@ inline void ELFDynamicObject::for_each_dynamic_entry(F func) const
             break;
     }
 }
+
+} // end namespace ELF
diff --git a/Libraries/LibELF/ELFImage.cpp b/Libraries/LibELF/Image.cpp
similarity index 88%
rename from Libraries/LibELF/ELFImage.cpp
rename to Libraries/LibELF/Image.cpp
index 6ae75963fd12..c265e3a9b8ff 100644
--- a/Libraries/LibELF/ELFImage.cpp
+++ b/Libraries/LibELF/Image.cpp
@@ -27,16 +27,18 @@
 #include <AK/Memory.h>
 #include <AK/StringBuilder.h>
 #include <AK/StringView.h>
-#include <LibELF/ELFImage.h>
+#include <LibELF/Image.h>
 
-ELFImage::ELFImage(const u8* buffer, size_t size)
+namespace ELF {
+
+Image::Image(const u8* buffer, size_t size)
     : m_buffer(buffer)
     , m_size(size)
 {
     m_valid = parse();
 }
 
-ELFImage::~ELFImage()
+Image::~Image()
 {
 }
 
@@ -58,7 +60,7 @@ static const char* object_file_type_to_string(Elf32_Half type)
     }
 }
 
-StringView ELFImage::section_index_to_string(unsigned index) const
+StringView Image::section_index_to_string(unsigned index) const
 {
     if (index == SHN_UNDEF)
         return ""Undefined"";
@@ -67,14 +69,14 @@ StringView ELFImage::section_index_to_string(unsigned index) const
     return section(index).name();
 }
 
-unsigned ELFImage::symbol_count() const
+unsigned Image::symbol_count() const
 {
     return section(m_symbol_table_section_index).entry_count();
 }
 
-void ELFImage::dump() const
+void Image::dump() const
 {
-    dbgprintf(""ELFImage{%p} {\n"", this);
+    dbgprintf(""Image{%p} {\n"", this);
     dbgprintf(""    is_valid: %u\n"", is_valid());
 
     if (!is_valid()) {
@@ -124,20 +126,20 @@ void ELFImage::dump() const
     dbgprintf(""}\n"");
 }
 
-unsigned ELFImage::section_count() const
+unsigned Image::section_count() const
 {
     return header().e_shnum;
 }
 
-unsigned ELFImage::program_header_count() const
+unsigned Image::program_header_count() const
 {
     return header().e_phnum;
 }
 
-bool ELFImage::parse()
+bool Image::parse()
 {
     if (!validate_elf_header(header(), m_size)) {
-        dbgputstr(""ELFImage::parse(): ELF Header not valid\n"");
+        dbgputstr(""Image::parse(): ELF Header not valid\n"");
         return false;
     }
 
@@ -163,14 +165,14 @@ bool ELFImage::parse()
     return true;
 }
 
-StringView ELFImage::table_string(unsigned table_index, unsigned offset) const
+StringView Image::table_string(unsigned table_index, unsigned offset) const
 {
     auto& sh = section_header(table_index);
     if (sh.sh_type != SHT_STRTAB)
         return nullptr;
     size_t computed_offset = sh.sh_offset + offset;
     if (computed_offset >= m_size) {
-        dbgprintf(""SHENANIGANS! ELFImage::table_string() computed offset outside image.\n"");
+        dbgprintf(""SHENANIGANS! Image::table_string() computed offset outside image.\n"");
         return {};
     }
     size_t max_length = m_size - computed_offset;
@@ -178,65 +180,65 @@ StringView ELFImage::table_string(unsigned table_index, unsigned offset) const
     return { raw_data(sh.sh_offset + offset), length };
 }
 
-StringView ELFImage::section_header_table_string(unsigned offset) const
+StringView Image::section_header_table_string(unsigned offset) const
 {
     return table_string(header().e_shstrndx, offset);
 }
 
-StringView ELFImage::table_string(unsigned offset) const
+StringView Image::table_string(unsigned offset) const
 {
     return table_string(m_string_table_section_index, offset);
 }
 
-const char* ELFImage::raw_data(unsigned offset) const
+const char* Image::raw_data(unsigned offset) const
 {
     return reinterpret_cast<const char*>(m_buffer) + offset;
 }
 
-const Elf32_Ehdr& ELFImage::header() const
+const Elf32_Ehdr& Image::header() const
 {
     return *reinterpret_cast<const Elf32_Ehdr*>(raw_data(0));
 }
 
-const Elf32_Phdr& ELFImage::program_header_internal(unsigned index) const
+const Elf32_Phdr& Image::program_header_internal(unsigned index) const
 {
     ASSERT(index < header().e_phnum);
     return *reinterpret_cast<const Elf32_Phdr*>(raw_data(header().e_phoff + (index * sizeof(Elf32_Phdr))));
 }
 
-const Elf32_Shdr& ELFImage::section_header(unsigned index) const
+const Elf32_Shdr& Image::section_header(unsigned index) const
 {
     ASSERT(index < header().e_shnum);
     return *reinterpret_cast<const Elf32_Shdr*>(raw_data(header().e_shoff + (index * header().e_shentsize)));
 }
 
-const ELFImage::Symbol ELFImage::symbol(unsigned index) const
+const Image::Symbol Image::symbol(unsigned index) const
 {
     ASSERT(index < symbol_count());
     auto* raw_syms = reinterpret_cast<const Elf32_Sym*>(raw_data(section(m_symbol_table_section_index).offset()));
     return Symbol(*this, index, raw_syms[index]);
 }
 
-const ELFImage::Section ELFImage::section(unsigned index) const
+const Image::Section Image::section(unsigned index) const
 {
     ASSERT(index < section_count());
     return Section(*this, index);
 }
 
-const ELFImage::ProgramHeader ELFImage::program_header(unsigned index) const
+const Image::ProgramHeader Image::program_header(unsigned index) const
 {
     ASSERT(index < program_header_count());
     return ProgramHeader(*this, index);
 }
 
-const ELFImage::Relocation ELFImage::RelocationSection::relocation(unsigned index) const
+const Image::Relocation Image::RelocationSection::relocation(unsigned index) const
 {
     ASSERT(index < relocation_count());
     auto* rels = reinterpret_cast<const Elf32_Rel*>(m_image.raw_data(offset()));
     return Relocation(m_image, rels[index]);
 }
 
-const ELFImage::RelocationSection ELFImage::Section::relocations() const
+const Image::RelocationSection Image::Section::relocations() const
 {
     StringBuilder builder;
     builder.append("".rel"");
@@ -246,20 +248,20 @@ const ELFImage::RelocationSection ELFImage::Section::relocations() const
     if (relocation_section.type() != SHT_REL)
         return static_cast<const RelocationSection>(m_image.section(0));
 
-#ifdef ELFIMAGE_DEBUG
+#ifdef Image_DEBUG
     dbgprintf(""Found relocations for %s in %s\n"", name(), relocation_section.name());
 #endif
     return static_cast<const RelocationSection>(relocation_section);
 }
 
-const ELFImage::Section ELFImage::lookup_section(const String& name) const
+const Image::Section Image::lookup_section(const String& name) const
 {
     if (auto it = m_sections.find(name); it != m_sections.end())
         return section((*it).value);
     return section(0);
 }
 
-bool ELFImage::validate_elf_header(const Elf32_Ehdr& elf_header, size_t file_size)
+bool Image::validate_elf_header(const Elf32_Ehdr& elf_header, size_t file_size)
 {
     if (!IS_ELF(elf_header)) {
         dbgputstr(""File is not an ELF file.\n"");
@@ -358,7 +360,7 @@ bool ELFImage::validate_elf_header(const Elf32_Ehdr& elf_header, size_t file_siz
     return true;
 }
 
-bool ELFImage::validate_program_headers(const Elf32_Ehdr& elf_header, size_t file_size, u8* buffer, size_t buffer_size, String& interpreter_path)
+bool Image::validate_program_headers(const Elf32_Ehdr& elf_header, size_t file_size, u8* buffer, size_t buffer_size, String& interpreter_path)
 {
     // Can we actually parse all the program headers in the given buffer?
     size_t end_of_last_program_header = elf_header.e_phoff + (elf_header.e_phnum * elf_header.e_phentsize);
@@ -414,8 +416,10 @@ bool ELFImage::validate_program_headers(const Elf32_Ehdr& elf_header, size_t fil
     return true;
 }
 
-StringView ELFImage::Symbol::raw_data() const
+StringView Image::Symbol::raw_data() const
 {
     auto& section = this->section();
     return { section.raw_data() + (value() - section.address()), size() };
 }
+
+} // end namespace ELF
diff --git a/Libraries/LibELF/ELFImage.h b/Libraries/LibELF/Image.h
similarity index 92%
rename from Libraries/LibELF/ELFImage.h
rename to Libraries/LibELF/Image.h
index 61f912079df4..7d0df2813a46 100644
--- a/Libraries/LibELF/ELFImage.h
+++ b/Libraries/LibELF/Image.h
@@ -32,10 +32,12 @@
 #include <LibBareMetal/Memory/VirtualAddress.h>
 #include <LibELF/exec_elf.h>
 
-class ELFImage {
+namespace ELF {
+
+class Image {
 public:
-    explicit ELFImage(const u8*, size_t);
-    ~ELFImage();
+    explicit Image(const u8*, size_t);
+    ~Image();
     void dump() const;
     bool is_valid() const { return m_valid; }
     bool parse();
@@ -56,7 +58,7 @@ class ELFImage {
 
     class Symbol {
     public:
-        Symbol(const ELFImage& image, unsigned index, const Elf32_Sym& sym)
+        Symbol(const Image& image, unsigned index, const Elf32_Sym& sym)
             : m_image(image)
             , m_sym(sym)
             , m_index(index)
@@ -76,14 +78,14 @@ class ELFImage {
         StringView raw_data() const;
 
     private:
-        const ELFImage& m_image;
+        const Image& m_image;
         const Elf32_Sym& m_sym;
         const unsigned m_index;
     };
 
     class ProgramHeader {
     public:
-        ProgramHeader(const ELFImage& image, unsigned program_header_index)
+        ProgramHeader(const Image& image, unsigned program_header_index)
             : m_image(image)
             , m_program_header(image.program_header_internal(program_header_index))
             , m_program_header_index(program_header_index)
@@ -106,14 +108,14 @@ class ELFImage {
         Elf32_Phdr raw_header() const { return m_program_header; }
 
     private:
-        const ELFImage& m_image;
+        const Image& m_image;
         const Elf32_Phdr& m_program_header;
         unsigned m_program_header_index { 0 };
     };
 
     class Section {
     public:
-        Section(const ELFImage& image, unsigned sectionIndex)
+        Section(const Image& image, unsigned sectionIndex)
             : m_image(image)
             , m_section_header(image.section_header(sectionIndex))
             , m_section_index(sectionIndex)
@@ -137,7 +139,7 @@ class ELFImage {
 
     protected:
         friend class RelocationSection;
-        const ELFImage& m_image;
+        const Image& m_image;
         const Elf32_Shdr& m_section_header;
         unsigned m_section_index;
     };
@@ -156,7 +158,7 @@ class ELFImage {
 
     class Relocation {
     public:
-        Relocation(const ELFImage& image, const Elf32_Rel& rel)
+        Relocation(const Image& image, const Elf32_Rel& rel)
             : m_image(image)
             , m_rel(rel)
         {
@@ -170,7 +172,7 @@ class ELFImage {
         const Symbol symbol() const { return m_image.symbol(symbol_index()); }
 
     private:
-        const ELFImage& m_image;
+        const Image& m_image;
         const Elf32_Rel& m_rel;
     };
 
@@ -224,7 +226,7 @@ class ELFImage {
 };
 
 template<typename F>
-inline void ELFImage::for_each_section(F func) const
+inline void Image::for_each_section(F func) const
 {
     auto section_count = this->section_count();
     for (unsigned i = 0; i < section_count; ++i)
@@ -232,7 +234,7 @@ inline void ELFImage::for_each_section(F func) const
 }
 
 template<typename F>
-inline void ELFImage::for_each_section_of_type(unsigned type, F func) const
+inline void Image::for_each_section_of_type(unsigned type, F func) const
 {
     auto section_count = this->section_count();
     for (unsigned i = 0; i < section_count; ++i) {
@@ -245,7 +247,7 @@ inline void ELFImage::for_each_section_of_type(unsigned type, F func) const
 }
 
 template<typename F>
-inline void ELFImage::RelocationSection::for_each_relocation(F func) const
+inline void Image::RelocationSection::for_each_relocation(F func) const
 {
     auto relocation_count = this->relocation_count();
     for (unsigned i = 0; i < relocation_count; ++i) {
@@ -255,7 +257,7 @@ inline void ELFImage::RelocationSection::for_each_relocation(F func) const
 }
 
 template<typename F>
-inline void ELFImage::for_each_symbol(F func) const
+inline void Image::for_each_symbol(F func) const
 {
     auto symbol_count = this->symbol_count();
     for (unsigned i = 0; i < symbol_count; ++i) {
@@ -265,9 +267,11 @@ inline void ELFImage::for_each_symbol(F func) const
 }
 
 template<typename F>
-inline void ELFImage::for_each_program_header(F func) const
+inline void Image::for_each_program_header(F func) const
 {
     auto program_header_count = this->program_header_count();
     for (unsigned i = 0; i < program_header_count; ++i)
         func(program_header(i));
 }
+
+} // end namespace ELF
diff --git a/Libraries/LibELF/ELFLoader.cpp b/Libraries/LibELF/Loader.cpp
similarity index 94%
rename from Libraries/LibELF/ELFLoader.cpp
rename to Libraries/LibELF/Loader.cpp
index 27c5cd0bed87..39a50a9fb215 100644
--- a/Libraries/LibELF/ELFLoader.cpp
+++ b/Libraries/LibELF/Loader.cpp
@@ -24,7 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include ""ELFLoader.h""
+#include ""Loader.h""
 #include <AK/Demangle.h>
 #include <AK/Memory.h>
 #include <AK/QuickSort.h>
@@ -36,21 +36,23 @@
 #    define do_memcpy memcpy
 #endif
 
-//#define ELFLOADER_DEBUG
+//#define Loader_DEBUG
 
-ELFLoader::ELFLoader(const u8* buffer, size_t size)
+namespace ELF {
+
+Loader::Loader(const u8* buffer, size_t size)
     : m_image(buffer, size)
 {
     m_symbol_count = m_image.symbol_count();
 }
 
-ELFLoader::~ELFLoader()
+Loader::~Loader()
 {
 }
 
-bool ELFLoader::load()
+bool Loader::load()
 {
-#ifdef ELFLOADER_DEBUG
+#ifdef Loader_DEBUG
     m_image.dump();
 #endif
     if (!m_image.is_valid())
@@ -62,10 +64,10 @@ bool ELFLoader::load()
     return true;
 }
 
-bool ELFLoader::layout()
+bool Loader::layout()
 {
     bool failed = false;
-    m_image.for_each_program_header([&](const ELFImage::ProgramHeader& program_header) {
+    m_image.for_each_program_header([&](const Image::ProgramHeader& program_header) {
         if (program_header.type() == PT_TLS) {
 #ifdef KERNEL
             auto* tls_image = tls_section_hook(program_header.size_in_memory(), program_header.alignment());
@@ -84,7 +86,7 @@ bool ELFLoader::layout()
         }
         if (program_header.type() != PT_LOAD)
             return;
-#ifdef ELFLOADER_DEBUG
+#ifdef Loader_DEBUG
         kprintf(""PH: V%p %u r:%u w:%u\n"", program_header.vaddr().get(), program_header.size_in_memory(), program_header.is_readable(), program_header.is_writable());
 #endif
 #ifdef KERNEL
@@ -134,10 +136,10 @@ bool ELFLoader::layout()
     return !failed;
 }
 
-char* ELFLoader::symbol_ptr(const char* name)
+char* Loader::symbol_ptr(const char* name)
 {
     char* found_ptr = nullptr;
-    m_image.for_each_symbol([&](const ELFImage::Symbol symbol) {
+    m_image.for_each_symbol([&](const Image::Symbol symbol) {
         if (symbol.type() != STT_FUNC)
             return IterationDecision::Continue;
         if (symbol.name() == name)
@@ -152,7 +154,7 @@ char* ELFLoader::symbol_ptr(const char* name)
 }
 
 #ifndef KERNEL
-Optional<ELFImage::Symbol> ELFLoader::find_symbol(u32 address, u32* out_offset) const
+Optional<Image::Symbol> Loader::find_symbol(u32 address, u32* out_offset) const
 {
     if (!m_symbol_count)
         return {};
@@ -201,7 +203,7 @@ Optional<ELFImage::Symbol> ELFLoader::find_symbol(u32 address, u32* out_offset)
 }
 #endif
 
-String ELFLoader::symbolicate(u32 address, u32* out_offset) const
+String Loader::symbolicate(u32 address, u32* out_offset) const
 {
     if (!m_symbol_count) {
         if (out_offset)
@@ -266,3 +268,5 @@ String ELFLoader::symbolicate(u32 address, u32* out_offset) const
         *out_offset = 0;
     return ""??"";
 }
+
+} // end namespace ELF
diff --git a/Libraries/LibELF/ELFLoader.h b/Libraries/LibELF/Loader.h
similarity index 88%
rename from Libraries/LibELF/ELFLoader.h
rename to Libraries/LibELF/Loader.h
index 49fe5ad4143b..394ceeafab31 100644
--- a/Libraries/LibELF/ELFLoader.h
+++ b/Libraries/LibELF/Loader.h
@@ -31,7 +31,7 @@
 #include <AK/OwnPtr.h>
 #include <AK/StringView.h>
 #include <AK/Vector.h>
-#include <LibELF/ELFImage.h>
+#include <LibELF/Image.h>
 
 #ifdef KERNEL
 #    include <LibBareMetal/Memory/VirtualAddress.h>
@@ -40,10 +40,12 @@ class Region;
 }
 #endif
 
-class ELFLoader {
+namespace ELF {
+
+class Loader {
 public:
-    explicit ELFLoader(const u8*, size_t);
-    ~ELFLoader();
+    explicit Loader(const u8*, size_t);
+    ~Loader();
 
     bool load();
 #if defined(KERNEL)
@@ -57,13 +59,13 @@ class ELFLoader {
     bool has_symbols() const { return m_symbol_count; }
 
     String symbolicate(u32 address, u32* offset = nullptr) const;
-    Optional<ELFImage::Symbol> find_symbol(u32 address, u32* offset = nullptr) const;
+    Optional<Image::Symbol> find_symbol(u32 address, u32* offset = nullptr) const;
 
 private:
     bool layout();
     bool perform_relocations();
-    void* lookup(const ELFImage::Symbol&);
-    char* area_for_section(const ELFImage::Section&);
+    void* lookup(const ELF::Image::Symbol&);
+    char* area_for_section(const ELF::Image::Section&);
     char* area_for_section_name(const char*);
 
     struct PtrAndSize {
@@ -77,7 +79,7 @@ class ELFLoader {
         char* ptr { nullptr };
         unsigned size { 0 };
     };
-    ELFImage m_image;
+    Image m_image;
 
     size_t m_symbol_count { 0 };
 
@@ -86,7 +88,7 @@ class ELFLoader {
         StringView name;
 #ifndef KERNEL
         String demangled_name;
-        Optional<ELFImage::Symbol> symbol;
+        Optional<Image::Symbol> symbol;
 #endif
     };
 #ifdef KERNEL
@@ -95,3 +97,5 @@ class ELFLoader {
     mutable Vector<SortedSymbol> m_sorted_symbols;
 #endif
 };
+
+} // end namespace ELF"
7080aac84f82840735fad45b357dd2e1960e0564,2023-01-05 15:24:35,Nico Weber,libgfx: Remove useless name from try_load_from_externally_owned_memory(),False,Remove useless name from try_load_from_externally_owned_memory(),libgfx,"diff --git a/Userland/Libraries/LibGfx/ICCProfile.h b/Userland/Libraries/LibGfx/ICCProfile.h
index f5cd556816de..2d85bd4dcdac 100644
--- a/Userland/Libraries/LibGfx/ICCProfile.h
+++ b/Userland/Libraries/LibGfx/ICCProfile.h
@@ -124,7 +124,7 @@ struct XYZ {
 
 class Profile : public RefCounted<Profile> {
 public:
-    static ErrorOr<NonnullRefPtr<Profile>> try_load_from_externally_owned_memory(ReadonlyBytes bytes);
+    static ErrorOr<NonnullRefPtr<Profile>> try_load_from_externally_owned_memory(ReadonlyBytes);
 
     Version version() const { return m_version; }
     DeviceClass device_class() const { return m_device_class; }"
e99dabc729f998d04fcd759528c8799df6fff4d4,2021-03-23 12:52:15,Oleg Sikorskiy,ak: Implement bit_cast,False,Implement bit_cast,ak,"diff --git a/AK/BitCast.h b/AK/BitCast.h
new file mode 100644
index 000000000000..475d5ac57e8f
--- /dev/null
+++ b/AK/BitCast.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2021, the SerenityOS developers.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+namespace AK {
+
+template<typename T, typename U>
+inline T bit_cast(const U& a)
+{
+    static_assert(sizeof(T) == sizeof(U));
+
+    T result;
+    __builtin_memcpy(&result, &a, sizeof(T));
+    return result;
+}
+
+}
+
+using AK::bit_cast;
diff --git a/AK/Tests/CMakeLists.txt b/AK/Tests/CMakeLists.txt
index 3d5bc360a25b..391bfbd0e065 100644
--- a/AK/Tests/CMakeLists.txt
+++ b/AK/Tests/CMakeLists.txt
@@ -9,6 +9,7 @@ set(AK_TEST_SOURCES
     TestBase64.cpp
     TestBinaryHeap.cpp
     TestBinarySearch.cpp
+    TestBitCast.cpp
     TestBitmap.cpp
     TestByteBuffer.cpp
     TestChecked.cpp
diff --git a/AK/Tests/TestBitCast.cpp b/AK/Tests/TestBitCast.cpp
new file mode 100644
index 000000000000..b251dbe9a11b
--- /dev/null
+++ b/AK/Tests/TestBitCast.cpp
@@ -0,0 +1,45 @@
+/*
+ * Copyright (c) 2021, the SerenityOS developers.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <AK/TestSuite.h>
+
+#include <AK/BitCast.h>
+
+template<typename A, typename B>
+void check_cast_both_ways(const A& a, const B& b)
+{
+    EXPECT_EQ((bit_cast<A, B>(b)), a);
+    EXPECT_EQ((bit_cast<B, A>(a)), b);
+}
+
+TEST_CASE(double_int_conversion)
+{
+    check_cast_both_ways(static_cast<u64>(0), 0.0);
+    check_cast_both_ways(static_cast<u64>(1) << 63, -0.0);
+    check_cast_both_ways(static_cast<u64>(0x4172f58bc0000000), 19880124.0);
+}
+
+TEST_MAIN(BitCast)"
cc948d06a6c5265a1e777cafc11fcc9cea1e42a8,2022-12-11 22:44:54,Ali Mohammad Pur,ak: Add a functional-style Optional::map(mapper_function) API,False,Add a functional-style Optional::map(mapper_function) API,ak,"diff --git a/AK/Optional.h b/AK/Optional.h
index a5f1c51540d4..2620498fe7ac 100644
--- a/AK/Optional.h
+++ b/AK/Optional.h
@@ -9,11 +9,30 @@
 
 #include <AK/Assertions.h>
 #include <AK/StdLibExtras.h>
+#include <AK/Try.h>
 #include <AK/Types.h>
 #include <AK/kmalloc.h>
 
 namespace AK {
 
+namespace Detail {
+template<auto condition, typename T>
+struct ConditionallyResultType;
+
+template<typename T>
+struct ConditionallyResultType<true, T> {
+    using Type = typename T::ResultType;
+};
+
+template<typename T>
+struct ConditionallyResultType<false, T> {
+    using Type = T;
+};
+}
+
+template<auto condition, typename T>
+using ConditionallyResultType = typename Detail::ConditionallyResultType<condition, T>::Type;
+
 // NOTE: If you're here because of an internal compiler error in GCC 10.3.0+,
 //       it's because of the following bug:
 //
@@ -214,6 +233,36 @@ requires(!IsLvalueReference<T>) class [[nodiscard]] Optional<T> {
     ALWAYS_INLINE T const* operator->() const { return &value(); }
     ALWAYS_INLINE T* operator->() { return &value(); }
 
+    template<typename F, typename MappedType = decltype(declval<F>()(declval<T&>())), auto IsErrorOr = IsSpecializationOf<MappedType, ErrorOr>, typename OptionalType = Optional<ConditionallyResultType<IsErrorOr, MappedType>>>
+    ALWAYS_INLINE Conditional<IsErrorOr, ErrorOr<OptionalType>, OptionalType> map(F&& mapper)
+    {
+        if constexpr (IsErrorOr) {
+            if (m_has_value)
+                return OptionalType { TRY(mapper(value())) };
+            return OptionalType {};
+        } else {
+            if (m_has_value)
+                return OptionalType { mapper(value()) };
+
+            return OptionalType {};
+        }
+    }
+
+    template<typename F, typename MappedType = decltype(declval<F>()(declval<T&>())), auto IsErrorOr = IsSpecializationOf<MappedType, ErrorOr>, typename OptionalType = Optional<ConditionallyResultType<IsErrorOr, MappedType>>>
+    ALWAYS_INLINE Conditional<IsErrorOr, ErrorOr<OptionalType>, OptionalType> map(F&& mapper) const
+    {
+        if constexpr (IsErrorOr) {
+            if (m_has_value)
+                return OptionalType { TRY(mapper(value())) };
+            return OptionalType {};
+        } else {
+            if (m_has_value)
+                return OptionalType { mapper(value()) };
+
+            return OptionalType {};
+        }
+    }
+
 private:
     alignas(T) u8 m_storage[sizeof(T)];
     bool m_has_value { false };
@@ -375,6 +424,36 @@ requires(IsLvalueReference<T>) class [[nodiscard]] Optional<T> {
         return {};
     }
 
+    template<typename F, typename MappedType = decltype(declval<F>()(declval<T&>())), auto IsErrorOr = IsSpecializationOf<MappedType, ErrorOr>, typename OptionalType = Optional<ConditionallyResultType<IsErrorOr, MappedType>>>
+    ALWAYS_INLINE Conditional<IsErrorOr, ErrorOr<OptionalType>, OptionalType> map(F&& mapper)
+    {
+        if constexpr (IsErrorOr) {
+            if (m_pointer != nullptr)
+                return OptionalType { TRY(mapper(value())) };
+            return OptionalType {};
+        } else {
+            if (m_pointer != nullptr)
+                return OptionalType { mapper(value()) };
+
+            return OptionalType {};
+        }
+    }
+
+    template<typename F, typename MappedType = decltype(declval<F>()(declval<T&>())), auto IsErrorOr = IsSpecializationOf<MappedType, ErrorOr>, typename OptionalType = Optional<ConditionallyResultType<IsErrorOr, MappedType>>>
+    ALWAYS_INLINE Conditional<IsErrorOr, ErrorOr<OptionalType>, OptionalType> map(F&& mapper) const
+    {
+        if constexpr (IsErrorOr) {
+            if (m_pointer != nullptr)
+                return OptionalType { TRY(mapper(value())) };
+            return OptionalType {};
+        } else {
+            if (m_pointer != nullptr)
+                return OptionalType { mapper(value()) };
+
+            return OptionalType {};
+        }
+    }
+
 private:
     RemoveReference<T>* m_pointer { nullptr };
 };"
1887dc6de49d5cfba48ed73be346f158f023ff21,2020-04-25 20:46:05,Andreas Kling,libgui: Make ToolBarContainer better at reacting to child events,False,Make ToolBarContainer better at reacting to child events,libgui,"diff --git a/Libraries/LibGUI/ToolBarContainer.cpp b/Libraries/LibGUI/ToolBarContainer.cpp
index 6d7bc8507c31..4a453cacbe54 100644
--- a/Libraries/LibGUI/ToolBarContainer.cpp
+++ b/Libraries/LibGUI/ToolBarContainer.cpp
@@ -32,9 +32,34 @@
 
 namespace GUI {
 
+void ToolBarContainer::child_event(Core::ChildEvent& event)
+{
+    Frame::child_event(event);
+
+    if (event.type() == Core::Event::ChildAdded) {
+        if (event.child() && event.child()->is_widget())
+            did_add_toolbar((Widget&)*event.child());
+    } else if (event.type() == Core::Event::ChildRemoved) {
+        if (event.child() && event.child()->is_widget()) {
+            did_remove_toolbar((Widget&)*event.child());
+        }
+    }
+}
+
+void ToolBarContainer::did_remove_toolbar(Widget& toolbar)
+{
+    m_toolbars.remove_first_matching([&](auto& entry) { return entry.ptr() == &toolbar; });
+    recompute_preferred_size();
+}
+
 void ToolBarContainer::did_add_toolbar(Widget& toolbar)
 {
     m_toolbars.append(toolbar);
+    recompute_preferred_size();
+}
+
+void ToolBarContainer::recompute_preferred_size()
+{
     int preferred_size = 4 + (m_toolbars.size() - 1) * 2;
 
     for (auto& toolbar : m_toolbars) {
diff --git a/Libraries/LibGUI/ToolBarContainer.h b/Libraries/LibGUI/ToolBarContainer.h
index 4dcbf936769d..40ffddc4eb8b 100644
--- a/Libraries/LibGUI/ToolBarContainer.h
+++ b/Libraries/LibGUI/ToolBarContainer.h
@@ -35,20 +35,16 @@ class ToolBarContainer : public Frame {
     C_OBJECT(ToolBarContainer);
 
 public:
-    template<class T, class... Args>
-    inline T& add(Args&&... args)
-    {
-        auto& child = Frame::add<T>(forward<Args>(args)...);
-        did_add_toolbar(child);
-        return child;
-    }
 
 private:
     explicit ToolBarContainer(Gfx::Orientation = Gfx::Orientation::Horizontal);
 
     virtual void paint_event(GUI::PaintEvent&) override;
+    virtual void child_event(Core::ChildEvent&) override;
 
     void did_add_toolbar(Widget&);
+    void did_remove_toolbar(Widget&);
+    void recompute_preferred_size();
 
     Gfx::Orientation m_orientation { Gfx::Orientation::Horizontal };"
b4ff85f138c256c3d719fb35b086ae521014e592,2020-11-16 19:41:02,Andreas Kling,userspaceemulator: Reduce malloc thrashing in backtrace capture,False,Reduce malloc thrashing in backtrace capture,userspaceemulator,"diff --git a/DevTools/UserspaceEmulator/Emulator.cpp b/DevTools/UserspaceEmulator/Emulator.cpp
index a6edf5e84588..c65e0f89ee62 100644
--- a/DevTools/UserspaceEmulator/Emulator.cpp
+++ b/DevTools/UserspaceEmulator/Emulator.cpp
@@ -208,7 +208,7 @@ bool Emulator::is_in_malloc_or_free() const
 
 Vector<FlatPtr> Emulator::raw_backtrace()
 {
-    Vector<FlatPtr> backtrace;
+    Vector<FlatPtr, 128> backtrace;
     backtrace.append(m_cpu.base_eip());
 
     // FIXME: Maybe do something if the backtrace has uninitialized data in the frame chain."
994f1a79ad6394f545d1a22c021ad861b3d03b73,2020-04-15 12:17:40,Kesse Jones,"libjs: Add String.prototype.{trim, trimStart, trimEnd} (#1792)",False,"Add String.prototype.{trim, trimStart, trimEnd} (#1792)",libjs,"diff --git a/Libraries/LibJS/Runtime/StringPrototype.cpp b/Libraries/LibJS/Runtime/StringPrototype.cpp
index 5d8f97a909a5..6b9fa42c3a5e 100644
--- a/Libraries/LibJS/Runtime/StringPrototype.cpp
+++ b/Libraries/LibJS/Runtime/StringPrototype.cpp
@@ -51,6 +51,10 @@ StringPrototype::StringPrototype()
     put_native_function(""toString"", to_string, 0);
     put_native_function(""padStart"", pad_start, 1);
     put_native_function(""padEnd"", pad_end, 1);
+
+    put_native_function(""trim"", trim, 0);
+    put_native_function(""trimStart"", trimStart, 0);
+    put_native_function(""trimEnd"", trimEnd, 0);
 }
 
 StringPrototype::~StringPrototype()
@@ -235,4 +239,70 @@ Value StringPrototype::pad_end(Interpreter& interpreter)
     return pad_string(interpreter, this_object, PadPlacement::End);
 }
 
+enum class TrimMode {
+    Left,
+    Right,
+    Both
+};
+
+static Value trim_string(Interpreter& interpreter, Object* object, TrimMode mode)
+{
+    auto& string = object->to_string().as_string()->string();
+
+    size_t substring_start = 0;
+    size_t substring_length = string.length();
+
+    auto is_white_space_character = [](char character) -> bool {
+        return character == 0x9 || character == 0xa || character == 0xb || character == 0xc || character == 0xd || character == 0x20;
+    };
+
+    if (mode == TrimMode::Left || mode == TrimMode::Both) {
+        for (size_t i = 0; i < string.length(); ++i) {
+            if (!is_white_space_character(string.characters()[i])) {
+                substring_start = i;
+                substring_length -= substring_start;
+                break;
+            }
+        }
+    }
+
+    if (substring_length == 0)
+        return js_string(interpreter, String());
+
+    if (mode == TrimMode::Right || mode == TrimMode::Both) {
+        size_t count = 0;
+        for (size_t i = string.length() - 1; i > 0; --i) {
+            if (!is_white_space_character(string.characters()[i])) {
+                substring_length -= count;
+                break;
+            }
+            count++;
+        }
+    }
+
+    auto substring = string.substring(substring_start, substring_length);
+    return js_string(interpreter, substring);
+}
+
+Value StringPrototype::trim(Interpreter& interpreter)
+{
+    auto* this_object = interpreter.this_value().to_object(interpreter.heap());
+
+    return trim_string(interpreter, this_object, TrimMode::Both);
+}
+
+Value StringPrototype::trimStart(Interpreter& interpreter)
+{
+    auto* this_object = interpreter.this_value().to_object(interpreter.heap());
+
+    return trim_string(interpreter, this_object, TrimMode::Left);
+}
+
+Value StringPrototype::trimEnd(Interpreter& interpreter)
+{
+    auto* this_object = interpreter.this_value().to_object(interpreter.heap());
+
+    return trim_string(interpreter, this_object, TrimMode::Right);
+}
+
 }
diff --git a/Libraries/LibJS/Runtime/StringPrototype.h b/Libraries/LibJS/Runtime/StringPrototype.h
index b5ee2649e605..ac7fb13a928b 100644
--- a/Libraries/LibJS/Runtime/StringPrototype.h
+++ b/Libraries/LibJS/Runtime/StringPrototype.h
@@ -49,6 +49,10 @@ class StringPrototype final : public StringObject {
     static Value pad_end(Interpreter&);
 
     static Value length_getter(Interpreter&);
+
+    static Value trim(Interpreter&);
+    static Value trimStart(Interpreter&);
+    static Value trimEnd(Interpreter&);
 };
 
 }
diff --git a/Libraries/LibJS/Tests/String.prototype.trim.js b/Libraries/LibJS/Tests/String.prototype.trim.js
new file mode 100644
index 000000000000..d8eb44676755
--- /dev/null
+++ b/Libraries/LibJS/Tests/String.prototype.trim.js
@@ -0,0 +1,56 @@
+load(""test-common.js"");
+
+try {
+    assert(String.prototype.trim.length === 0);
+    assert(String.prototype.trimStart.length === 0);
+    assert(String.prototype.trimEnd.length === 0);
+    assert(""   hello friends  "".trim() === ""hello friends"");
+    assert(""hello friends   "".trim() === ""hello friends"");
+    assert(""   hello friends"".trim() === ""hello friends"");
+    assert(""   hello friends"".trimStart() === ""hello friends"");
+    assert(""hello friends   "".trimEnd() === ""hello friends"");
+    assert(""   hello friends"".trimEnd() === ""   hello friends"");
+    assert(""hello friends   "".trimStart() === ""hello friends   "");
+    assert(""   hello friends   "".trimEnd() === ""   hello friends"");
+    assert(""    hello friends   "".trimStart() === ""hello friends   "");
+
+    assert(""\thello friends"".trimStart() === ""hello friends"");
+    assert(""hello friends\t"".trimStart() === ""hello friends\t"");
+    assert(""\thello friends\t"".trimStart() === ""hello friends\t"");
+    
+    assert(""\rhello friends"".trimStart() === ""hello friends"");
+    assert(""hello friends\r"".trimStart() === ""hello friends\r"");
+    assert(""\rhello friends\r"".trimStart() === ""hello friends\r"");
+
+    assert(""hello friends\t"".trimEnd() === ""hello friends"");
+    assert(""\thello friends"".trimEnd() === ""\thello friends"");
+    assert(""\thello friends\t"".trimEnd() === ""\thello friends"");
+    
+    assert(""hello friends\r"".trimEnd() === ""hello friends"");
+    assert(""\rhello friends"".trimEnd() === ""\rhello friends"");
+    assert(""\rhello friends\r"".trimEnd() === ""\rhello friends"");
+    
+    assert(""hello friends\n"".trimEnd() === ""hello friends"");
+    assert(""\r\nhello friends"".trimEnd() === ""\r\nhello friends"");
+    assert(""\rhello friends\r\n"".trimEnd() === ""\rhello friends"");
+
+    assert(""\thello friends\t"".trim() === ""hello friends"");
+    assert(""\thello friends"".trim() === ""hello friends"");
+    assert(""hello friends\t"".trim() === ""hello friends"");
+    
+    assert(""\rhello friends\r"".trim() === ""hello friends"");
+    assert(""\rhello friends"".trim() === ""hello friends"");
+    assert(""hello friends\r"".trim() === ""hello friends"");
+    
+    assert(""\rhello friends\n"".trim() === ""hello friends"");
+    assert(""\r\thello friends"".trim() === ""hello friends"");
+    assert(""hello friends\r\n"".trim() === ""hello friends"");
+    assert(""  \thello friends\r\n"".trim() === ""hello friends"");
+    assert(""\n\t\thello friends\r\n"".trim() === ""hello friends"");
+    assert(""\n\t\thello friends\t\t"".trim() === ""hello friends"");
+
+
+    console.log(""PASS"");
+} catch (e) {
+    console.log(""FAIL: "" + e);
+}"
3fae92eea2b5cab82c39e57b06babfd133b62d64,2023-07-28 08:58:50,Timothy Flynn,libunicode: Search code point properties sequentially at compile time,False,Search code point properties sequentially at compile time,libunicode,"diff --git a/Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeData.cpp b/Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeData.cpp
index 144dcfddfaff..c8348c7d0b1d 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeData.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibUnicode/GenerateUnicodeData.cpp
@@ -7,7 +7,6 @@
 #include ""GeneratorUtil.h""
 #include <AK/AllOf.h>
 #include <AK/Array.h>
-#include <AK/BinarySearch.h>
 #include <AK/CharacterTypes.h>
 #include <AK/DeprecatedString.h>
 #include <AK/Error.h>
@@ -1540,7 +1539,7 @@ static ErrorOr<void> create_code_point_tables(UnicodeData& unicode_data)
     static constexpr auto MAX_CODE_POINT = 0x10ffffu;
 
     struct TableMetadata {
-        static ErrorOr<TableMetadata> create(PropList const& property_list)
+        static ErrorOr<TableMetadata> create(PropList& property_list)
         {
             TableMetadata data;
             TRY(data.property_values.try_ensure_capacity(property_list.size()));
@@ -1549,15 +1548,15 @@ static ErrorOr<void> create_code_point_tables(UnicodeData& unicode_data)
             auto property_names = property_list.keys();
             quick_sort(property_names);
 
-            for (auto const& property_name : property_names) {
-                auto const& code_point_rages = property_list.get(property_name).value();
-                data.property_values.unchecked_append(code_point_rages);
+            for (auto& property_name : property_names) {
+                auto& code_point_ranges = property_list.get(property_name).value();
+                data.property_values.unchecked_append(move(code_point_ranges));
             }
 
             return data;
         }
 
-        Vector<typename PropList::ValueType const&> property_values;
+        Vector<typename PropList::ValueType> property_values;
         Vector<bool> property_set;
 
         Vector<size_t> current_block;
@@ -1566,10 +1565,23 @@ static ErrorOr<void> create_code_point_tables(UnicodeData& unicode_data)
 
     auto update_tables = [](auto code_point, auto& tables, auto& metadata) -> ErrorOr<void> {
         static constexpr auto BLOCK_SIZE = CodePointTables::LSB_MASK + 1;
+        static Unicode::CodePointRangeComparator comparator {};
+
+        for (auto& property_values : metadata.property_values) {
+            size_t ranges_to_remove = 0;
+            auto has_property = false;
+
+            for (auto const& range : property_values) {
+                if (auto comparison = comparator(code_point, range); comparison <= 0) {
+                    has_property = comparison == 0;
+                    break;
+                }
+
+                ++ranges_to_remove;
+            }
 
-        for (auto const& property_values : metadata.property_values) {
-            auto has_property = binary_search(property_values, code_point, nullptr, Unicode::CodePointRangeComparator {}) != nullptr;
             metadata.property_set.unchecked_append(has_property);
+            property_values.remove(0, ranges_to_remove);
         }
 
         size_t unique_properties_index = 0;"
8fe20232e8506eda3fed3fd1e5360884d1280777,2022-02-22 19:03:42,electrikmilk,base: Fix Cyrillic in Katica,False,Fix Cyrillic in Katica,base,"diff --git a/Base/res/fonts/KaticaRegular10.font b/Base/res/fonts/KaticaRegular10.font
index 112c582ce5d5..138a149a2ea1 100644
Binary files a/Base/res/fonts/KaticaRegular10.font and b/Base/res/fonts/KaticaRegular10.font differ"
95d2feed33047509d1fc3aa5eab3540d46a835c5,2021-12-24 02:15:36,Hendiadyoin1,userspaceemulator: Remove redundant private specifier in SoftCPU.h,False,Remove redundant private specifier in SoftCPU.h,userspaceemulator,"diff --git a/Userland/DevTools/UserspaceEmulator/SoftCPU.h b/Userland/DevTools/UserspaceEmulator/SoftCPU.h
index 02766df35710..f4bfa6f9b9c3 100644
--- a/Userland/DevTools/UserspaceEmulator/SoftCPU.h
+++ b/Userland/DevTools/UserspaceEmulator/SoftCPU.h
@@ -1249,7 +1249,6 @@ class SoftCPU final
 
     void update_code_cache();
 
-private:
     Emulator& m_emulator;
     SoftFPU m_fpu;"
67d9172885be49185d76f1a6a96ddb506f05f6b5,2023-05-21 11:23:45,Ben Wiederhake,libipc: Fix HashMap detection in case of non-trivial traits,False,Fix HashMap detection in case of non-trivial traits,libipc,"diff --git a/Userland/Libraries/LibIPC/Concepts.h b/Userland/Libraries/LibIPC/Concepts.h
index 99746e00c820..5afab8c92391 100644
--- a/Userland/Libraries/LibIPC/Concepts.h
+++ b/Userland/Libraries/LibIPC/Concepts.h
@@ -27,10 +27,8 @@ namespace Detail {
 
 template<typename T>
 constexpr inline bool IsHashMap = false;
-template<typename K, typename V>
-constexpr inline bool IsHashMap<HashMap<K, V>> = true;
-template<typename K, typename V>
-constexpr inline bool IsHashMap<OrderedHashMap<K, V>> = true;
+template<typename K, typename V, typename KeyTraits, typename ValueTraits, bool IsOrdered>
+constexpr inline bool IsHashMap<HashMap<K, V, KeyTraits, ValueTraits, IsOrdered>> = true;
 
 template<typename T>
 constexpr inline bool IsOptional = false;"
f6884235e20fd3d2374479882922a9a4a9051ae3,2022-11-19 22:30:10,Sam Atkins,libcore: Add a ConfigFile::open() overload for Core::Stream::File,False,Add a ConfigFile::open() overload for Core::Stream::File,libcore,"diff --git a/Userland/Libraries/LibCore/ConfigFile.cpp b/Userland/Libraries/LibCore/ConfigFile.cpp
index 5df2fce419e0..e56b1a23cbb1 100644
--- a/Userland/Libraries/LibCore/ConfigFile.cpp
+++ b/Userland/Libraries/LibCore/ConfigFile.cpp
@@ -60,6 +60,11 @@ ErrorOr<NonnullRefPtr<ConfigFile>> ConfigFile::open(String const& filename, Allo
 ErrorOr<NonnullRefPtr<ConfigFile>> ConfigFile::open(String const& filename, int fd)
 {
     auto file = TRY(Stream::File::adopt_fd(fd, Stream::OpenMode::ReadWrite));
+    return open(filename, move(file));
+}
+
+ErrorOr<NonnullRefPtr<ConfigFile>> ConfigFile::open(String const& filename, NonnullOwnPtr<Core::Stream::File> file)
+{
     auto buffered_file = TRY(Stream::BufferedFile::create(move(file)));
 
     auto config_file = TRY(adopt_nonnull_ref_or_enomem(new (nothrow) ConfigFile(filename, move(buffered_file))));
diff --git a/Userland/Libraries/LibCore/ConfigFile.h b/Userland/Libraries/LibCore/ConfigFile.h
index 044acd050b87..842fd4724f3f 100644
--- a/Userland/Libraries/LibCore/ConfigFile.h
+++ b/Userland/Libraries/LibCore/ConfigFile.h
@@ -30,6 +30,7 @@ class ConfigFile : public RefCounted<ConfigFile> {
     static ErrorOr<NonnullRefPtr<ConfigFile>> open_for_system(String const& app_name, AllowWriting = AllowWriting::No);
     static ErrorOr<NonnullRefPtr<ConfigFile>> open(String const& filename, AllowWriting = AllowWriting::No);
     static ErrorOr<NonnullRefPtr<ConfigFile>> open(String const& filename, int fd);
+    static ErrorOr<NonnullRefPtr<ConfigFile>> open(String const& filename, NonnullOwnPtr<Core::Stream::File>);
     ~ConfigFile();
 
     bool has_group(String const&) const;"
f0138fcb25cbcd865cb4514bb60ab278a93f9f09,2020-12-17 05:24:58,Andreas Kling,libgui: Move selection behavior from TableView up to AbstractView,False,Move selection behavior from TableView up to AbstractView,libgui,"diff --git a/Applications/Spreadsheet/SpreadsheetView.cpp b/Applications/Spreadsheet/SpreadsheetView.cpp
index 4eef78dbe3f7..9bb417f60f5e 100644
--- a/Applications/Spreadsheet/SpreadsheetView.cpp
+++ b/Applications/Spreadsheet/SpreadsheetView.cpp
@@ -148,7 +148,7 @@ SpreadsheetView::SpreadsheetView(Sheet& sheet)
     set_layout<GUI::VerticalBoxLayout>().set_margins({ 2, 2, 2, 2 });
     m_table_view = add<InfinitelyScrollableTableView>();
     m_table_view->set_grid_style(GUI::TableView::GridStyle::Both);
-    m_table_view->set_cursor_style(GUI::TableView::CursorStyle::Item);
+    m_table_view->set_selection_behavior(GUI::AbstractView::SelectionBehavior::SelectItems);
     m_table_view->set_edit_triggers(GUI::AbstractView::EditTrigger::EditKeyPressed | GUI::AbstractView::AnyKeyPressed | GUI::AbstractView::DoubleClicked);
     m_table_view->set_tab_key_navigation_enabled(true);
     m_table_view->row_header().set_visible(true);
diff --git a/Libraries/LibGUI/AbstractTableView.cpp b/Libraries/LibGUI/AbstractTableView.cpp
index a5fc870fd34b..3095778a07c4 100644
--- a/Libraries/LibGUI/AbstractTableView.cpp
+++ b/Libraries/LibGUI/AbstractTableView.cpp
@@ -41,6 +41,7 @@ namespace GUI {
 
 AbstractTableView::AbstractTableView()
 {
+    set_selection_behavior(SelectionBehavior::SelectRows);
     m_corner_button = add<Button>();
     m_corner_button->move_to_back();
     m_corner_button->set_background_role(Gfx::ColorRole::ThreedShadow1);
diff --git a/Libraries/LibGUI/AbstractView.h b/Libraries/LibGUI/AbstractView.h
index a8716e19a886..f29860b621cc 100644
--- a/Libraries/LibGUI/AbstractView.h
+++ b/Libraries/LibGUI/AbstractView.h
@@ -60,6 +60,11 @@ class AbstractView
         ClearIfNotSelected
     };
 
+    enum class SelectionBehavior {
+        SelectItems,
+        SelectRows,
+    };
+
     virtual void move_cursor(CursorMovement, SelectionUpdate) { }
 
     void set_model(RefPtr<Model>);
@@ -88,6 +93,9 @@ class AbstractView
     unsigned edit_triggers() const { return m_edit_triggers; }
     void set_edit_triggers(unsigned);
 
+    SelectionBehavior selection_behavior() const { return m_selection_behavior; }
+    void set_selection_behavior(SelectionBehavior behavior) { m_selection_behavior = behavior; }
+
     bool is_multi_select() const { return m_multi_select; }
     void set_multi_select(bool);
 
@@ -188,6 +196,7 @@ class AbstractView
     String m_searching;
     RefPtr<Core::Timer> m_searching_timer;
     ModelIndex m_cursor_index;
+    SelectionBehavior m_selection_behavior { SelectionBehavior::SelectItems };
     unsigned m_edit_triggers { EditTrigger::DoubleClicked | EditTrigger::EditKeyPressed };
     bool m_activates_on_selection { false };
     bool m_multi_select { true };
diff --git a/Libraries/LibGUI/TableView.cpp b/Libraries/LibGUI/TableView.cpp
index 8b143df504f4..b521df771ed7 100644
--- a/Libraries/LibGUI/TableView.cpp
+++ b/Libraries/LibGUI/TableView.cpp
@@ -149,13 +149,13 @@ void TableView::paint_event(PaintEvent& event)
             if (m_grid_style == GridStyle::Vertical || m_grid_style == GridStyle::Both)
                 painter.draw_line(cell_rect_for_fill.top_right(), cell_rect_for_fill.bottom_right(), palette().ruler());
 
-            if (m_cursor_style == CursorStyle::Item && cell_index == cursor_index())
+            if (selection_behavior() == SelectionBehavior::SelectItems && cell_index == cursor_index())
                 painter.draw_rect(cell_rect_for_fill, palette().text_cursor());
 
             x += column_width + horizontal_padding() * 2;
         }
 
-        if (is_focused() && cursor_style() == CursorStyle::Row && row_index == cursor_index().row()) {
+        if (is_focused() && selection_behavior() == SelectionBehavior::SelectRows && row_index == cursor_index().row()) {
             painter.draw_rect(row_rect, widget_background_color);
             painter.draw_focus_rect(row_rect, palette().focus_outline());
         }
@@ -244,12 +244,4 @@ void TableView::set_grid_style(GridStyle style)
     update();
 }
 
-void TableView::set_cursor_style(CursorStyle style)
-{
-    if (m_cursor_style == style)
-        return;
-    m_cursor_style = style;
-    update();
-}
-
 }
diff --git a/Libraries/LibGUI/TableView.h b/Libraries/LibGUI/TableView.h
index b834d3762f09..04c44de64a6a 100644
--- a/Libraries/LibGUI/TableView.h
+++ b/Libraries/LibGUI/TableView.h
@@ -51,9 +51,6 @@ class TableView : public AbstractTableView {
     GridStyle grid_style() const { return m_grid_style; }
     void set_grid_style(GridStyle);
 
-    CursorStyle cursor_style() const { return m_cursor_style; }
-    void set_cursor_style(CursorStyle);
-
     virtual void move_cursor(CursorMovement, SelectionUpdate) override;
 
 protected:
@@ -64,7 +61,6 @@ class TableView : public AbstractTableView {
 
 private:
     GridStyle m_grid_style { GridStyle::None };
-    CursorStyle m_cursor_style { CursorStyle::Row };
 };
 
 }"
e8b505534989690038f90ad55bc29ac62b5f51a7,2024-01-23 23:01:00,Fabian Dellwing,ports: Update zlib to 1.3.1,False,Update zlib to 1.3.1,ports,"diff --git a/Ports/AvailablePorts.md b/Ports/AvailablePorts.md
index 1ced158b2503..547210d0982d 100644
--- a/Ports/AvailablePorts.md
+++ b/Ports/AvailablePorts.md
@@ -337,6 +337,6 @@ This list is also available at [ports.serenityos.net](https://ports.serenityos.n
 | [`xz`](xz/)                                         | xz                                                              | 5.4.4                     | https://tukaani.org/xz/                                                        |
 | [`yasm`](yasm/)                                     | Yasm Modular Assembler                                          | 1.3.0                     | https://yasm.tortall.net/                                                      |
 | [`zig`](zig/)                                       | Zig programming language                                        | 0.12.0-dev.141+ddf5859c2  | https://ziglang.org/                                                           |
-| [`zlib`](zlib/)                                     | zlib                                                            | 1.3                       | https://www.zlib.net/                                                          |
+| [`zlib`](zlib/)                                     | zlib                                                            | 1.3.1                     | https://www.zlib.net/                                                          |
 | [`zsh`](zsh/)                                       | Z Shell (Zsh)                                                   | 5.9                       | https://www.zsh.org                                                            |
 | [`zstd`](zstd/)                                     | Zstandard                                                       | 1.5.5                     | https://facebook.github.io/zstd/                                               |
diff --git a/Ports/zlib/package.sh b/Ports/zlib/package.sh
index 97ff7b631dce..696621f8e743 100755
--- a/Ports/zlib/package.sh
+++ b/Ports/zlib/package.sh
@@ -1,9 +1,9 @@
 #!/usr/bin/env -S bash ../.port_include.sh
 port='zlib'
-version='1.3'
+version='1.3.1'
 useconfigure='true'
 files=(
-    ""https://www.zlib.net/zlib-${version}.tar.gz#ff0ba4c292013dbc27530b3a81e1f9a813cd39de01ca5e0f8bf355702efa593e""
+    ""https://www.zlib.net/fossils/zlib-${version}.tar.gz#9a93b2b7dfdac77ceba5a558a580e74667dd6fede4585b91eefb60f03b72df23""
 )
 
 configure() {"
1352f8820b0102477ba80083babe2db3e1edfdae,2023-04-13 13:23:47,Sam Atkins,libweb: Simplify CalculatedStyleValue types to match CSS-VALUES-4 :^),False,Simplify CalculatedStyleValue types to match CSS-VALUES-4 :^),libweb,"diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
index 10923271becb..49ff0fc7be03 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -7134,11 +7134,6 @@ Optional<CalculatedStyleValue::CalcValue> Parser::parse_calc_value(TokenStream<C
 
 OwnPtr<CalculatedStyleValue::CalcProductPartWithOperator> Parser::parse_calc_product_part_with_operator(TokenStream<ComponentValue>& tokens)
 {
-    // Note: The default value is not used or passed around.
-    auto product_with_operator = make<CalculatedStyleValue::CalcProductPartWithOperator>(
-        CalculatedStyleValue::ProductOperation::Multiply,
-        CalculatedStyleValue::CalcNumberValue { Number {} });
-
     tokens.skip_whitespace();
 
     auto const& op_token = tokens.peek_token();
@@ -7146,160 +7141,33 @@ OwnPtr<CalculatedStyleValue::CalcProductPartWithOperator> Parser::parse_calc_pro
         return nullptr;
 
     auto op = op_token.token().delim();
-    if (op == '*') {
-        tokens.next_token();
-        tokens.skip_whitespace();
-        product_with_operator->op = CalculatedStyleValue::ProductOperation::Multiply;
-        auto parsed_calc_value = parse_calc_value(tokens);
-        if (!parsed_calc_value.has_value())
-            return nullptr;
-        product_with_operator->value = { parsed_calc_value.release_value() };
-
-    } else if (op == '/') {
-        // FIXME: Detect divide-by-zero if possible
-        tokens.next_token();
-        tokens.skip_whitespace();
-        product_with_operator->op = CalculatedStyleValue::ProductOperation::Divide;
-        auto parsed_calc_number_value = parse_calc_number_value(tokens);
-        if (!parsed_calc_number_value.has_value())
-            return nullptr;
-        product_with_operator->value = { parsed_calc_number_value.release_value() };
-    } else {
+    if (op != '*' && op != '/')
         return nullptr;
-    }
-
-    return product_with_operator;
-}
-
-OwnPtr<CalculatedStyleValue::CalcNumberProductPartWithOperator> Parser::parse_calc_number_product_part_with_operator(TokenStream<ComponentValue>& tokens)
-{
-    // Note: The default value is not used or passed around.
-    auto number_product_with_operator = make<CalculatedStyleValue::CalcNumberProductPartWithOperator>(
-        CalculatedStyleValue::ProductOperation::Multiply,
-        CalculatedStyleValue::CalcNumberValue { Number {} });
 
+    tokens.next_token();
     tokens.skip_whitespace();
-
-    auto const& op_token = tokens.peek_token();
-    if (!op_token.is(Token::Type::Delim))
-        return nullptr;
-
-    auto op = op_token.token().delim();
-    if (op == '*') {
-        tokens.next_token();
-        tokens.skip_whitespace();
-        number_product_with_operator->op = CalculatedStyleValue::ProductOperation::Multiply;
-    } else if (op == '/') {
-        // FIXME: Detect divide-by-zero if possible
-        tokens.next_token();
-        tokens.skip_whitespace();
-        number_product_with_operator->op = CalculatedStyleValue::ProductOperation::Divide;
-    } else {
-        return nullptr;
-    }
-
-    auto parsed_calc_value = parse_calc_number_value(tokens);
+    auto parsed_calc_value = parse_calc_value(tokens);
     if (!parsed_calc_value.has_value())
         return nullptr;
-    number_product_with_operator->value = parsed_calc_value.release_value();
-
-    return number_product_with_operator;
-}
-
-OwnPtr<CalculatedStyleValue::CalcNumberProduct> Parser::parse_calc_number_product(TokenStream<ComponentValue>& tokens)
-{
-    auto calc_number_product = make<CalculatedStyleValue::CalcNumberProduct>(
-        CalculatedStyleValue::CalcNumberValue { Number {} },
-        Vector<NonnullOwnPtr<CalculatedStyleValue::CalcNumberProductPartWithOperator>> {});
-
-    auto first_calc_number_value_or_error = parse_calc_number_value(tokens);
-    if (!first_calc_number_value_or_error.has_value())
-        return nullptr;
-    calc_number_product->first_calc_number_value = first_calc_number_value_or_error.release_value();
-
-    while (tokens.has_next_token()) {
-        auto number_product_with_operator = parse_calc_number_product_part_with_operator(tokens);
-        if (!number_product_with_operator)
-            break;
-        calc_number_product->zero_or_more_additional_calc_number_values.append(number_product_with_operator.release_nonnull());
-    }
-
-    return calc_number_product;
-}
-
-OwnPtr<CalculatedStyleValue::CalcNumberSumPartWithOperator> Parser::parse_calc_number_sum_part_with_operator(TokenStream<ComponentValue>& tokens)
-{
-    if (!(tokens.peek_token().is(Token::Type::Delim)
-            && (tokens.peek_token().token().delim() == '+' || tokens.peek_token().token().delim() == '-')
-            && tokens.peek_token(1).is(Token::Type::Whitespace)))
-        return nullptr;
-
-    auto const& token = tokens.next_token();
-    tokens.skip_whitespace();
-
-    CalculatedStyleValue::SumOperation op;
-    auto delim = token.token().delim();
-    if (delim == '+')
-        op = CalculatedStyleValue::SumOperation::Add;
-    else if (delim == '-')
-        op = CalculatedStyleValue::SumOperation::Subtract;
-    else
-        return nullptr;
-
-    auto calc_number_product = parse_calc_number_product(tokens);
-    if (!calc_number_product)
-        return nullptr;
-    return make<CalculatedStyleValue::CalcNumberSumPartWithOperator>(op, calc_number_product.release_nonnull());
-}
-
-OwnPtr<CalculatedStyleValue::CalcNumberSum> Parser::parse_calc_number_sum(TokenStream<ComponentValue>& tokens)
-{
-    auto first_calc_number_product_or_error = parse_calc_number_product(tokens);
-    if (!first_calc_number_product_or_error)
-        return nullptr;
-
-    Vector<NonnullOwnPtr<CalculatedStyleValue::CalcNumberSumPartWithOperator>> additional {};
-    while (tokens.has_next_token()) {
-        auto calc_sum_part = parse_calc_number_sum_part_with_operator(tokens);
-        if (!calc_sum_part)
-            return nullptr;
-        additional.append(calc_sum_part.release_nonnull());
-    }
-
-    tokens.skip_whitespace();
-
-    auto calc_number_sum = make<CalculatedStyleValue::CalcNumberSum>(first_calc_number_product_or_error.release_nonnull(), move(additional));
-    return calc_number_sum;
-}
-
-Optional<CalculatedStyleValue::CalcNumberValue> Parser::parse_calc_number_value(TokenStream<ComponentValue>& tokens)
-{
-    auto const& first = tokens.peek_token();
-    if (first.is_block() && first.block().is_paren()) {
-        tokens.next_token();
-        auto block_values = TokenStream(first.block().values());
-        auto calc_number_sum = parse_calc_number_sum(block_values);
-        if (calc_number_sum)
-            return CalculatedStyleValue::CalcNumberValue { calc_number_sum.release_nonnull() };
-    }
-
-    if (!first.is(Token::Type::Number))
-        return {};
-    tokens.next_token();
 
-    return CalculatedStyleValue::CalcNumberValue { first.token().number() };
+    auto operation = op == '*'
+        ? CalculatedStyleValue::ProductOperation::Multiply
+        : CalculatedStyleValue::ProductOperation::Divide;
+    return make<CalculatedStyleValue::CalcProductPartWithOperator>(operation, parsed_calc_value.release_value());
 }
 
+// https://www.w3.org/TR/css-values-4/#typedef-calc-product
 OwnPtr<CalculatedStyleValue::CalcProduct> Parser::parse_calc_product(TokenStream<ComponentValue>& tokens)
 {
-    auto calc_product = make<CalculatedStyleValue::CalcProduct>(
-        CalculatedStyleValue::CalcValue { Number {} },
-        Vector<NonnullOwnPtr<CalculatedStyleValue::CalcProductPartWithOperator>> {});
+    // `<calc-product> = <calc-value> [ [ '*' | '/' ] <calc-value> ]*`
 
     auto first_calc_value_or_error = parse_calc_value(tokens);
     if (!first_calc_value_or_error.has_value())
         return nullptr;
-    calc_product->first_calc_value = first_calc_value_or_error.release_value();
+
+    auto calc_product = make<CalculatedStyleValue::CalcProduct>(
+        first_calc_value_or_error.release_value(),
+        Vector<NonnullOwnPtr<CalculatedStyleValue::CalcProductPartWithOperator>> {});
 
     while (tokens.has_next_token()) {
         auto product_with_operator = parse_calc_product_part_with_operator(tokens);
@@ -7338,8 +7206,11 @@ OwnPtr<CalculatedStyleValue::CalcSumPartWithOperator> Parser::parse_calc_sum_par
     return make<CalculatedStyleValue::CalcSumPartWithOperator>(op, calc_product.release_nonnull());
 };
 
+// https://www.w3.org/TR/css-values-4/#typedef-calc-sum
 OwnPtr<CalculatedStyleValue::CalcSum> Parser::parse_calc_sum(TokenStream<ComponentValue>& tokens)
 {
+    // `<calc-sum> = <calc-product> [ [ '+' | '-' ] <calc-product> ]*`
+
     auto parsed_calc_product = parse_calc_product(tokens);
     if (!parsed_calc_product)
         return nullptr;
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
index f3a45863f219..76894a6f403d 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
@@ -327,13 +327,8 @@ class Parser {
     OwnPtr<CalculatedStyleValue::CalcSum> parse_calc_sum(TokenStream<ComponentValue>&);
     OwnPtr<CalculatedStyleValue::CalcProduct> parse_calc_product(TokenStream<ComponentValue>&);
     Optional<CalculatedStyleValue::CalcValue> parse_calc_value(TokenStream<ComponentValue>&);
-    OwnPtr<CalculatedStyleValue::CalcNumberSum> parse_calc_number_sum(TokenStream<ComponentValue>&);
-    OwnPtr<CalculatedStyleValue::CalcNumberProduct> parse_calc_number_product(TokenStream<ComponentValue>&);
-    Optional<CalculatedStyleValue::CalcNumberValue> parse_calc_number_value(TokenStream<ComponentValue>&);
     OwnPtr<CalculatedStyleValue::CalcProductPartWithOperator> parse_calc_product_part_with_operator(TokenStream<ComponentValue>&);
     OwnPtr<CalculatedStyleValue::CalcSumPartWithOperator> parse_calc_sum_part_with_operator(TokenStream<ComponentValue>&);
-    OwnPtr<CalculatedStyleValue::CalcNumberProductPartWithOperator> parse_calc_number_product_part_with_operator(TokenStream<ComponentValue>& tokens);
-    OwnPtr<CalculatedStyleValue::CalcNumberSumPartWithOperator> parse_calc_number_sum_part_with_operator(TokenStream<ComponentValue>&);
     OwnPtr<CalculatedStyleValue::CalcSum> parse_calc_expression(Vector<ComponentValue> const&);
 
     ParseErrorOr<NonnullRefPtr<Selector>> parse_complex_selector(TokenStream<ComponentValue>&, SelectorType);
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.cpp b/Userland/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.cpp
index 6b87e3313e87..5697510909f6 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.cpp
@@ -214,13 +214,6 @@ bool CalculatedStyleValue::equals(StyleValue const& other) const
     return to_string().release_value_but_fixme_should_propagate_errors() == other.to_string().release_value_but_fixme_should_propagate_errors();
 }
 
-ErrorOr<String> CalculatedStyleValue::CalcNumberValue::to_string() const
-{
-    return value.visit(
-        [](Number const& number) -> ErrorOr<String> { return String::number(number.value()); },
-        [](NonnullOwnPtr<CalcNumberSum> const& sum) -> ErrorOr<String> { return String::formatted(""({})"", TRY(sum->to_string())); });
-}
-
 ErrorOr<String> CalculatedStyleValue::CalcValue::to_string() const
 {
     return value.visit(
@@ -238,15 +231,6 @@ ErrorOr<String> CalculatedStyleValue::CalcSum::to_string() const
     return builder.to_string();
 }
 
-ErrorOr<String> CalculatedStyleValue::CalcNumberSum::to_string() const
-{
-    StringBuilder builder;
-    TRY(builder.try_append(TRY(first_calc_number_product->to_string())));
-    for (auto const& item : zero_or_more_additional_calc_number_products)
-        TRY(builder.try_append(TRY(item->to_string())));
-    return builder.to_string();
-}
-
 ErrorOr<String> CalculatedStyleValue::CalcProduct::to_string() const
 {
     StringBuilder builder;
@@ -262,32 +246,10 @@ ErrorOr<String> CalculatedStyleValue::CalcSumPartWithOperator::to_string() const
 }
 
 ErrorOr<String> CalculatedStyleValue::CalcProductPartWithOperator::to_string() const
-{
-    auto value_string = TRY(value.visit(
-        [](CalcValue const& v) { return v.to_string(); },
-        [](CalcNumberValue const& v) { return v.to_string(); }));
-    return String::formatted("" {} {}"", op == ProductOperation::Multiply ? ""*""sv : ""/""sv, value_string);
-}
-
-ErrorOr<String> CalculatedStyleValue::CalcNumberProduct::to_string() const
-{
-    StringBuilder builder;
-    TRY(builder.try_append(TRY(first_calc_number_value.to_string())));
-    for (auto const& item : zero_or_more_additional_calc_number_values)
-        TRY(builder.try_append(TRY(item->to_string())));
-    return builder.to_string();
-}
-
-ErrorOr<String> CalculatedStyleValue::CalcNumberProductPartWithOperator::to_string() const
 {
     return String::formatted("" {} {}"", op == ProductOperation::Multiply ? ""*""sv : ""/""sv, TRY(value.to_string()));
 }
 
-ErrorOr<String> CalculatedStyleValue::CalcNumberSumPartWithOperator::to_string() const
-{
-    return String::formatted("" {} {}"", op == SumOperation::Add ? ""+""sv : ""-""sv, TRY(value->to_string()));
-}
-
 Optional<Angle> CalculatedStyleValue::resolve_angle() const
 {
     auto result = m_expression->resolve(nullptr, {});
@@ -466,15 +428,6 @@ Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcSum::reso
     return resolve_sum_type(type, zero_or_more_additional_calc_products);
 }
 
-Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcNumberSum::resolved_type() const
-{
-    auto maybe_type = first_calc_number_product->resolved_type();
-    if (!maybe_type.has_value())
-        return {};
-    auto type = maybe_type.value();
-    return resolve_sum_type(type, zero_or_more_additional_calc_number_products);
-}
-
 template<typename ProductWithOperator>
 static Optional<CalculatedStyleValue::ResolvedType> resolve_product_type(CalculatedStyleValue::ResolvedType first_type, Vector<NonnullOwnPtr<ProductWithOperator>> const& zero_or_more_additional_values)
 {
@@ -532,34 +485,9 @@ Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcSumPartWi
     return value->resolved_type();
 }
 
-Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcNumberProduct::resolved_type() const
-{
-    auto maybe_type = first_calc_number_value.resolved_type();
-    if (!maybe_type.has_value())
-        return {};
-    auto type = maybe_type.value();
-    return resolve_product_type(type, zero_or_more_additional_calc_number_values);
-}
-
-Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcNumberProductPartWithOperator::resolved_type() const
-{
-    return value.resolved_type();
-}
-
-Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcNumberSumPartWithOperator::resolved_type() const
-{
-    return value->resolved_type();
-}
-
 Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcProductPartWithOperator::resolved_type() const
 {
-    return value.visit(
-        [](CalcValue const& calc_value) {
-            return calc_value.resolved_type();
-        },
-        [](CalcNumberValue const& calc_number_value) {
-            return calc_number_value.resolved_type();
-        });
+    return value.resolved_type();
 }
 
 Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcValue::resolved_type() const
@@ -576,26 +504,6 @@ Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcValue::re
         [](NonnullOwnPtr<CalcSum> const& sum) { return sum->resolved_type(); });
 }
 
-Optional<CalculatedStyleValue::ResolvedType> CalculatedStyleValue::CalcNumberValue::resolved_type() const
-{
-    return value.visit(
-        [](Number const& number) -> Optional<CalculatedStyleValue::ResolvedType> {
-            return { number.is_integer() ? ResolvedType::Integer : ResolvedType::Number };
-        },
-        [](NonnullOwnPtr<CalcNumberSum> const& sum) { return sum->resolved_type(); });
-}
-
-CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcNumberValue::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
-{
-    return value.visit(
-        [&](Number const& number) -> CalculatedStyleValue::CalculationResult {
-            return CalculatedStyleValue::CalculationResult { number };
-        },
-        [&](NonnullOwnPtr<CalcNumberSum> const& sum) -> CalculatedStyleValue::CalculationResult {
-            return sum->resolve(layout_node, percentage_basis);
-        });
-}
-
 CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcValue::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
 {
     return value.visit(
@@ -625,87 +533,31 @@ CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcSum::resolve(L
     return value;
 }
 
-CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcNumberSum::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
-{
-    auto value = first_calc_number_product->resolve(layout_node, percentage_basis);
-
-    for (auto& additional_product : zero_or_more_additional_calc_number_products) {
-        auto additional_value = additional_product->resolve(layout_node, percentage_basis);
-
-        if (additional_product->op == CSS::CalculatedStyleValue::SumOperation::Add)
-            value.add(additional_value, layout_node, percentage_basis);
-        else if (additional_product->op == CalculatedStyleValue::SumOperation::Subtract)
-            value.subtract(additional_value, layout_node, percentage_basis);
-        else
-            VERIFY_NOT_REACHED();
-    }
-
-    return value;
-}
-
 CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcProduct::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
 {
     auto value = first_calc_value.resolve(layout_node, percentage_basis);
 
     for (auto& additional_value : zero_or_more_additional_calc_values) {
-        additional_value->value.visit(
-            [&](CalculatedStyleValue::CalcValue const& calc_value) {
-                VERIFY(additional_value->op == CalculatedStyleValue::ProductOperation::Multiply);
-                auto resolved_value = calc_value.resolve(layout_node, percentage_basis);
-                value.multiply_by(resolved_value, layout_node);
-            },
-            [&](CalculatedStyleValue::CalcNumberValue const& calc_number_value) {
-                VERIFY(additional_value->op == CalculatedStyleValue::ProductOperation::Divide);
-                auto resolved_calc_number_value = calc_number_value.resolve(layout_node, percentage_basis);
-                // FIXME: Checking for division by 0 should happen during parsing.
-                VERIFY(resolved_calc_number_value.value().get<Number>().value() != 0.0f);
-                value.divide_by(resolved_calc_number_value, layout_node);
-            });
-    }
-
-    return value;
-}
-
-CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcNumberProduct::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
-{
-    auto value = first_calc_number_value.resolve(layout_node, percentage_basis);
-
-    for (auto& additional_number_value : zero_or_more_additional_calc_number_values) {
-        auto additional_value = additional_number_value->resolve(layout_node, percentage_basis);
-
-        if (additional_number_value->op == CalculatedStyleValue::ProductOperation::Multiply)
-            value.multiply_by(additional_value, layout_node);
-        else if (additional_number_value->op == CalculatedStyleValue::ProductOperation::Divide)
-            value.divide_by(additional_value, layout_node);
-        else
-            VERIFY_NOT_REACHED();
+        if (additional_value->op == ProductOperation::Multiply) {
+            auto resolved_value = additional_value->value.resolve(layout_node, percentage_basis);
+            value.multiply_by(resolved_value, layout_node);
+        } else {
+            auto resolved_calc_number_value = additional_value->value.resolve(layout_node, percentage_basis);
+            // FIXME: Return the relevant constant here. (infinity?)
+            VERIFY(resolved_calc_number_value.value().get<Number>().value() != 0.0f);
+            value.divide_by(resolved_calc_number_value, layout_node);
+        }
     }
 
     return value;
 }
 
 CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcProductPartWithOperator::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
-{
-    return value.visit(
-        [&](CalcValue const& calc_value) {
-            return calc_value.resolve(layout_node, percentage_basis);
-        },
-        [&](CalcNumberValue const& calc_number_value) {
-            return calc_number_value.resolve(layout_node, percentage_basis);
-        });
-}
-
-CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcSumPartWithOperator::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
-{
-    return value->resolve(layout_node, percentage_basis);
-}
-
-CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcNumberProductPartWithOperator::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
 {
     return value.resolve(layout_node, percentage_basis);
 }
 
-CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcNumberSumPartWithOperator::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
+CalculatedStyleValue::CalculationResult CalculatedStyleValue::CalcSumPartWithOperator::resolve(Layout::Node const* layout_node, PercentageBasis const& percentage_basis) const
 {
     return value->resolve(layout_node, percentage_basis);
 }
@@ -744,9 +596,7 @@ bool CalculatedStyleValue::CalcProduct::contains_percentage() const
 
 bool CalculatedStyleValue::CalcProductPartWithOperator::contains_percentage() const
 {
-    return value.visit(
-        [](CalcValue const& value) { return value.contains_percentage(); },
-        [](CalcNumberValue const&) { return false; });
+    return value.contains_percentage();
 }
 
 bool CalculatedStyleValue::CalcValue::contains_percentage() const
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.h b/Userland/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.h
index 88b1726c175f..9e2873ed342b 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.h
+++ b/Userland/Libraries/LibWeb/CSS/StyleValues/CalculatedStyleValue.h
@@ -64,17 +64,6 @@ class CalculatedStyleValue : public StyleValue {
     struct CalcSumPartWithOperator;
     struct CalcProduct;
     struct CalcProductPartWithOperator;
-    struct CalcNumberSum;
-    struct CalcNumberSumPartWithOperator;
-    struct CalcNumberProduct;
-    struct CalcNumberProductPartWithOperator;
-
-    struct CalcNumberValue {
-        Variant<Number, NonnullOwnPtr<CalcNumberSum>> value;
-        ErrorOr<String> to_string() const;
-        Optional<ResolvedType> resolved_type() const;
-        CalculationResult resolve(Layout::Node const*, PercentageBasis const& percentage_basis) const;
-    };
 
     struct CalcValue {
         Variant<Number, Angle, Frequency, Length, Percentage, Time, NonnullOwnPtr<CalcSum>> value;
@@ -100,19 +89,6 @@ class CalculatedStyleValue : public StyleValue {
         bool contains_percentage() const;
     };
 
-    struct CalcNumberSum {
-        CalcNumberSum(NonnullOwnPtr<CalcNumberProduct> first_calc_number_product, Vector<NonnullOwnPtr<CalcNumberSumPartWithOperator>> additional)
-            : first_calc_number_product(move(first_calc_number_product))
-            , zero_or_more_additional_calc_number_products(move(additional)) {};
-
-        NonnullOwnPtr<CalcNumberProduct> first_calc_number_product;
-        Vector<NonnullOwnPtr<CalcNumberSumPartWithOperator>> zero_or_more_additional_calc_number_products;
-
-        ErrorOr<String> to_string() const;
-        Optional<ResolvedType> resolved_type() const;
-        CalculationResult resolve(Layout::Node const*, PercentageBasis const& percentage_basis) const;
-    };
-
     struct CalcProduct {
         CalcValue first_calc_value;
         Vector<NonnullOwnPtr<CalcProductPartWithOperator>> zero_or_more_additional_calc_values;
@@ -139,7 +115,7 @@ class CalculatedStyleValue : public StyleValue {
 
     struct CalcProductPartWithOperator {
         ProductOperation op;
-        Variant<CalcValue, CalcNumberValue> value;
+        CalcValue value;
 
         ErrorOr<String> to_string() const;
         Optional<ResolvedType> resolved_type() const;
@@ -148,37 +124,6 @@ class CalculatedStyleValue : public StyleValue {
         bool contains_percentage() const;
     };
 
-    struct CalcNumberProduct {
-        CalcNumberValue first_calc_number_value;
-        Vector<NonnullOwnPtr<CalcNumberProductPartWithOperator>> zero_or_more_additional_calc_number_values;
-
-        ErrorOr<String> to_string() const;
-        Optional<ResolvedType> resolved_type() const;
-        CalculationResult resolve(Layout::Node const*, PercentageBasis const& percentage_basis) const;
-    };
-
-    struct CalcNumberProductPartWithOperator {
-        ProductOperation op;
-        CalcNumberValue value;
-
-        ErrorOr<String> to_string() const;
-        Optional<ResolvedType> resolved_type() const;
-        CalculationResult resolve(Layout::Node const*, PercentageBasis const& percentage_basis) const;
-    };
-
-    struct CalcNumberSumPartWithOperator {
-        CalcNumberSumPartWithOperator(SumOperation op, NonnullOwnPtr<CalcNumberProduct> calc_number_product)
-            : op(op)
-            , value(move(calc_number_product)) {};
-
-        SumOperation op;
-        NonnullOwnPtr<CalcNumberProduct> value;
-
-        ErrorOr<String> to_string() const;
-        Optional<ResolvedType> resolved_type() const;
-        CalculationResult resolve(Layout::Node const*, PercentageBasis const& percentage_basis) const;
-    };
-
     static ValueComparingNonnullRefPtr<CalculatedStyleValue> create(NonnullOwnPtr<CalcSum> calc_sum, ResolvedType resolved_type)
     {
         return adopt_ref(*new CalculatedStyleValue(move(calc_sum), resolved_type));"
a641f4d213bc957dc7ea515b925a8275332e8042,2020-01-04 19:28:50,Jami Kettunen,windowserver: Set no active window if no new candidates are available,False,Set no active window if no new candidates are available,windowserver,"diff --git a/Servers/WindowServer/WSWindowManager.cpp b/Servers/WindowServer/WSWindowManager.cpp
index 3470cb7d89fe..8918b4135780 100644
--- a/Servers/WindowServer/WSWindowManager.cpp
+++ b/Servers/WindowServer/WSWindowManager.cpp
@@ -348,8 +348,6 @@ void WSWindowManager::remove_window(WSWindow& window)
     m_windows_in_order.remove(&window);
     if (window.is_active())
         pick_new_active_window();
-    if (m_active_window.ptr() == &window)
-        set_active_window(nullptr);
     if (m_switcher.is_visible() && window.type() != WSWindowType::WindowSwitcher)
         m_switcher.refresh();
 
@@ -489,10 +487,14 @@ void WSWindowManager::notify_occlusion_state_changed(WSWindow& window)
 
 void WSWindowManager::pick_new_active_window()
 {
+    bool new_window_picked = false;
     for_each_visible_window_of_type_from_front_to_back(WSWindowType::Normal, [&](WSWindow& candidate) {
         set_active_window(&candidate);
+        new_window_picked = true;
         return IterationDecision::Break;
     });
+    if (!new_window_picked)
+        set_active_window(nullptr);
 }
 
 void WSWindowManager::start_window_move(WSWindow& window, const WSMouseEvent& event)"
03008ec4e0250d7ad8f2ed8db828536347c59738,2023-04-10 08:28:54,Cameron Youell,tests: Use `FileSystem` instead of `DeprecatedFile`,False,Use `FileSystem` instead of `DeprecatedFile`,tests,"diff --git a/Tests/Kernel/TestKernelFilePermissions.cpp b/Tests/Kernel/TestKernelFilePermissions.cpp
index ec58a1f10a0a..1dbab644bd3e 100644
--- a/Tests/Kernel/TestKernelFilePermissions.cpp
+++ b/Tests/Kernel/TestKernelFilePermissions.cpp
@@ -5,7 +5,7 @@
  */
 
 #include <AK/DeprecatedString.h>
-#include <LibCore/DeprecatedFile.h>
+#include <LibFileSystem/FileSystem.h>
 #include <LibTest/TestCase.h>
 #include <fcntl.h>
 #include <stdio.h>
@@ -81,10 +81,10 @@ TEST_CASE(test_change_file_location)
     ftruncate(fd, 0);
     EXPECT(fchmod(fd, 06755) != -1);
 
-    auto suid_path_or_error = Core::DeprecatedFile::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
+    auto suid_path_or_error = FileSystem::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
     EXPECT(!suid_path_or_error.is_error());
 
-    auto suid_path = suid_path_or_error.release_value();
+    auto suid_path = suid_path_or_error.release_value().to_deprecated_string();
     EXPECT(suid_path.characters());
     auto new_path = DeprecatedString::formatted(""{}.renamed"", suid_path);
 
diff --git a/Tests/LibC/TestIo.cpp b/Tests/LibC/TestIo.cpp
index b7bcd583597b..c111b2ab4d10 100644
--- a/Tests/LibC/TestIo.cpp
+++ b/Tests/LibC/TestIo.cpp
@@ -7,7 +7,7 @@
 
 #include <AK/Assertions.h>
 #include <AK/Types.h>
-#include <LibCore/DeprecatedFile.h>
+#include <LibFileSystem/FileSystem.h>
 #include <LibTest/TestCase.h>
 #include <fcntl.h>
 #include <stdio.h>
@@ -217,11 +217,11 @@ TEST_CASE(unlink_symlink)
         perror(""symlink"");
     }
 
-    auto target_or_error = Core::DeprecatedFile::read_link(""/tmp/linky"");
+    auto target_or_error = FileSystem::read_link(""/tmp/linky""sv);
     EXPECT(!target_or_error.is_error());
 
     auto target = target_or_error.release_value();
-    EXPECT_EQ(target, ""/proc/2/foo"");
+    EXPECT_EQ(target.bytes_as_string_view(), ""/proc/2/foo""sv);
 
     rc = unlink(""/tmp/linky"");
     EXPECT(rc >= 0);
diff --git a/Tests/LibC/TestLibCMkTemp.cpp b/Tests/LibC/TestLibCMkTemp.cpp
index 9f7eedac6ffa..81e4c61309ce 100644
--- a/Tests/LibC/TestLibCMkTemp.cpp
+++ b/Tests/LibC/TestLibCMkTemp.cpp
@@ -6,7 +6,7 @@
  */
 
 #include <AK/DeprecatedString.h>
-#include <LibCore/DeprecatedFile.h>
+#include <LibFileSystem/FileSystem.h>
 #include <LibTest/TestCase.h>
 #include <fcntl.h>
 #include <stdio.h>
@@ -86,10 +86,10 @@ TEST_CASE(test_mkstemp_unique_filename)
         auto fd = mkstemp(path);
         EXPECT_NE(fd, -1);
 
-        auto temp_path_or_error = Core::DeprecatedFile::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
+        auto temp_path_or_error = FileSystem::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
         EXPECT(!temp_path_or_error.is_error());
 
-        auto temp_path = temp_path_or_error.release_value();
+        auto temp_path = temp_path_or_error.release_value().to_deprecated_string();
         EXPECT(temp_path.characters());
 
         close(fd);
@@ -107,10 +107,10 @@ TEST_CASE(test_mkstemp_unique_filename)
         auto fd = mkstemp(path);
         EXPECT(fd != -1);
 
-        auto path2_or_error = Core::DeprecatedFile::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
+        auto path2_or_error = FileSystem::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
         EXPECT(!path2_or_error.is_error());
 
-        auto path2 = path2_or_error.release_value();
+        auto path2 = path2_or_error.release_value().to_deprecated_string();
         EXPECT(path2.characters());
 
         close(fd);
@@ -132,10 +132,10 @@ TEST_CASE(test_mkstemps_unique_filename)
         auto fd = mkstemps(path, 6);
         EXPECT_NE(fd, -1);
 
-        auto temp_path_or_error = Core::DeprecatedFile::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
+        auto temp_path_or_error = FileSystem::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
         EXPECT(!temp_path_or_error.is_error());
 
-        auto temp_path = temp_path_or_error.release_value();
+        auto temp_path = temp_path_or_error.release_value().to_deprecated_string();
         EXPECT(temp_path.characters());
 
         close(fd);
@@ -157,10 +157,10 @@ TEST_CASE(test_mkstemps_unique_filename)
         auto fd = mkstemps(path, 6);
         EXPECT(fd != -1);
 
-        auto path2_or_error = Core::DeprecatedFile::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
+        auto path2_or_error = FileSystem::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
         EXPECT(!path2_or_error.is_error());
 
-        auto path2 = path2_or_error.release_value();
+        auto path2 = path2_or_error.release_value().to_deprecated_string();
         EXPECT(path2.characters());
 
         close(fd);
diff --git a/Tests/LibELF/test-elf.cpp b/Tests/LibELF/test-elf.cpp
index 2cb187a6a31d..2dc2590557bb 100644
--- a/Tests/LibELF/test-elf.cpp
+++ b/Tests/LibELF/test-elf.cpp
@@ -4,7 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <LibCore/DeprecatedFile.h>
+#include <LibFileSystem/FileSystem.h>
 #include <LibTest/TestCase.h>
 #include <elf.h>
 #include <fcntl.h>
@@ -58,10 +58,10 @@ TEST_CASE(test_interp_header_tiny_p_filesz)
     int nwritten = write(fd, buffer, sizeof(buffer));
     EXPECT(nwritten);
 
-    auto elf_path_or_error = Core::DeprecatedFile::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
+    auto elf_path_or_error = FileSystem::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
     EXPECT(!elf_path_or_error.is_error());
 
-    auto elf_path = elf_path_or_error.release_value();
+    auto elf_path = elf_path_or_error.release_value().to_deprecated_string();
     EXPECT(elf_path.characters());
 
     int rc = execl(elf_path.characters(), ""test-elf"", nullptr);
@@ -115,10 +115,10 @@ TEST_CASE(test_interp_header_p_filesz_larger_than_p_memsz)
     int nwritten = write(fd, buffer, sizeof(buffer));
     EXPECT(nwritten);
 
-    auto elf_path_or_error = Core::DeprecatedFile::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
+    auto elf_path_or_error = FileSystem::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
     EXPECT(!elf_path_or_error.is_error());
 
-    auto elf_path = elf_path_or_error.release_value();
+    auto elf_path = elf_path_or_error.release_value().to_deprecated_string();
     EXPECT(elf_path.characters());
 
     int rc = execl(elf_path.characters(), ""test-elf"", nullptr);
@@ -176,10 +176,10 @@ TEST_CASE(test_interp_header_p_filesz_plus_p_offset_overflow_p_memsz)
     int nwritten = write(fd, buffer, sizeof(buffer));
     EXPECT(nwritten);
 
-    auto elf_path_or_error = Core::DeprecatedFile::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
+    auto elf_path_or_error = FileSystem::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
     EXPECT(!elf_path_or_error.is_error());
 
-    auto elf_path = elf_path_or_error.release_value();
+    auto elf_path = elf_path_or_error.release_value().to_deprecated_string();
     EXPECT(elf_path.characters());
 
     int rc = execl(elf_path.characters(), ""test-elf"", nullptr);
@@ -234,10 +234,10 @@ TEST_CASE(test_load_header_p_memsz_zero)
     int nwritten = write(fd, buffer, sizeof(buffer));
     EXPECT(nwritten);
 
-    auto elf_path_or_error = Core::DeprecatedFile::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
+    auto elf_path_or_error = FileSystem::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
     EXPECT(!elf_path_or_error.is_error());
 
-    auto elf_path = elf_path_or_error.release_value();
+    auto elf_path = elf_path_or_error.release_value().to_deprecated_string();
     EXPECT(elf_path.characters());
 
     int rc = execl(elf_path.characters(), ""test-elf"", nullptr);
@@ -292,10 +292,10 @@ TEST_CASE(test_load_header_p_memsz_not_equal_to_p_align)
     int nwritten = write(fd, buffer, sizeof(buffer));
     EXPECT(nwritten);
 
-    auto elf_path_or_error = Core::DeprecatedFile::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
+    auto elf_path_or_error = FileSystem::read_link(DeprecatedString::formatted(""/proc/{}/fd/{}"", getpid(), fd));
     EXPECT(!elf_path_or_error.is_error());
 
-    auto elf_path = elf_path_or_error.release_value();
+    auto elf_path = elf_path_or_error.release_value().to_deprecated_string();
     EXPECT(elf_path.characters());
 
     int rc = execl(elf_path.characters(), ""test-elf"", nullptr);
diff --git a/Userland/Libraries/LibCpp/Tests/parser/strace.ast b/Userland/Libraries/LibCpp/Tests/parser/strace.ast
index 91c7265c86ce..2d36ac0ba70f 100644
--- a/Userland/Libraries/LibCpp/Tests/parser/strace.ast
+++ b/Userland/Libraries/LibCpp/Tests/parser/strace.ast
@@ -1,4 +1,4 @@
-TranslationUnit[0:0->144:0]
+TranslationUnit[0:0->150:0]
   VariableDeclaration[0:0->2:0]
     NamedType[0:0->0:9]
       [static] int
@@ -58,7 +58,7 @@ TranslationUnit[0:0->144:0]
             StringLiteral[8:15->8:22]
               ""detach""
     }
-  FunctionDeclaration[12:0->144:0]
+  FunctionDeclaration[12:0->150:0]
     NamedType[12:0->12:2]
       int
     main
@@ -74,7 +74,7 @@ TranslationUnit[0:0->144:0]
           NamedType[12:19->12:23]
             char
     )
-    FunctionDefinition[13:0->144:0]
+    FunctionDefinition[13:0->150:0]
     {
       IfStatement[14:4->19:4]
         Predicate:
@@ -108,772 +108,816 @@ TranslationUnit[0:0->144:0]
             [const] char
         output_filename
         NullPointerLiteral[21:34->21:40]
-      VariableDeclaration[22:4->22:60]
+      VariableDeclaration[22:4->22:59]
         NamedType[22:4->22:7]
           auto
+        trace_file_or_error
+        FunctionCall[22:31->22:59]
+          Name[22:31->22:56]
+          Core::File::standard_error
+      IfStatement[23:4->27:4]
+        Predicate:
+        FunctionCall[23:8->23:38]
+          MemberExpression[23:8->23:36]
+            Name[23:8->23:26]
+            trace_file_or_error
+            Identifier[23:28->23:35]
+            is_error
+        Then:
+        BlockStatement[23:40->27:4]
+          FunctionCall[24:8->24:79]
+            Name[24:8->24:12]
+            outln
+            Name[24:14->24:19]
+            stderr
+            StringLiteral[24:22->24:48]
+              ""Failed to open stderr: {}""
+            FunctionCall[24:51->24:78]
+              MemberExpression[24:51->24:76]
+                Name[24:51->24:69]
+                trace_file_or_error
+                Identifier[24:71->24:75]
+                error
+          ReturnStatement[25:8->25:16]
+            NumericLiteral[25:15->25:15]
+            1
+      VariableDeclaration[27:4->27:57]
+        NamedType[27:4->27:7]
+          auto
         trace_file
-        FunctionCall[22:22->22:60]
-          Name[22:22->22:57]
-          Core::DeprecatedFile::standard_error
-      VariableDeclaration[24:4->24:27]
-        NamedType[24:4->24:19]
+        FunctionCall[27:22->27:57]
+          MemberExpression[27:22->27:55]
+            Name[27:22->27:40]
+            trace_file_or_error
+            Identifier[27:42->27:54]
+            release_value
+      VariableDeclaration[29:4->29:27]
+        NamedType[29:4->29:19]
           Core::ArgsParser
         parser
-      FunctionCall[25:4->26:47]
-        MemberExpression[25:4->25:27]
-          Name[25:4->25:9]
+      FunctionCall[30:4->31:47]
+        MemberExpression[30:4->30:27]
+          Name[30:4->30:9]
           parser
-          Identifier[25:11->25:26]
+          Identifier[30:11->30:26]
           set_general_help
-        StringLiteral[26:8->26:45]
+        StringLiteral[31:8->31:45]
           ""Trace all syscalls and their result.""
-      FunctionCall[27:4->27:70]
-        MemberExpression[27:4->27:21]
-          Name[27:4->27:9]
+      FunctionCall[32:4->32:70]
+        MemberExpression[32:4->32:21]
+          Name[32:4->32:9]
           parser
-          Identifier[27:11->27:20]
+          Identifier[32:11->32:20]
           add_option
-        Name[27:22->27:26]
+        Name[32:22->32:26]
         g_pid
-        StringLiteral[27:29->27:49]
+        StringLiteral[32:29->32:49]
           ""Trace the given PID""
-        StringLiteral[27:52->27:56]
+        StringLiteral[32:52->32:56]
           ""pid""
-        StringLiteral[27:59->27:61]
+        StringLiteral[32:59->32:61]
           'p'
-        StringLiteral[27:64->27:68]
+        StringLiteral[32:64->32:68]
           ""pid""
-      FunctionCall[28:4->28:94]
-        MemberExpression[28:4->28:21]
-          Name[28:4->28:9]
+      FunctionCall[33:4->33:94]
+        MemberExpression[33:4->33:21]
+          Name[33:4->33:9]
           parser
-          Identifier[28:11->28:20]
+          Identifier[33:11->33:20]
           add_option
-        Name[28:22->28:36]
+        Name[33:22->33:36]
         output_filename
-        StringLiteral[28:39->28:67]
+        StringLiteral[33:39->33:67]
           ""Filename to write output to""
-        StringLiteral[28:70->28:77]
+        StringLiteral[33:70->33:77]
           ""output""
-        StringLiteral[28:80->28:82]
+        StringLiteral[33:80->33:82]
           'o'
-        StringLiteral[28:85->28:92]
+        StringLiteral[33:85->33:92]
           ""output""
-      FunctionCall[29:4->29:111]
-        MemberExpression[29:4->29:34]
-          Name[29:4->29:9]
+      FunctionCall[34:4->34:111]
+        MemberExpression[34:4->34:34]
+          Name[34:4->34:9]
           parser
-          Identifier[29:11->29:33]
+          Identifier[34:11->34:33]
           add_positional_argument
-        Name[29:35->29:44]
+        Name[34:35->34:44]
         child_argv
-        StringLiteral[29:47->29:65]
+        StringLiteral[34:47->34:65]
           ""Arguments to exec""
-        StringLiteral[29:68->29:77]
+        StringLiteral[34:68->34:77]
           ""argument""
-        Name[29:80->29:109]
+        Name[34:80->34:109]
         Core::ArgsParser::Required::No
-      FunctionCall[31:4->31:28]
-        MemberExpression[31:4->31:16]
-          Name[31:4->31:9]
+      FunctionCall[36:4->36:28]
+        MemberExpression[36:4->36:16]
+          Name[36:4->36:9]
           parser
-          Identifier[31:11->31:15]
+          Identifier[36:11->36:15]
           parse
-        Name[31:17->31:20]
+        Name[36:17->36:20]
         argc
-        Name[31:23->31:26]
+        Name[36:23->36:26]
         argv
-      IfStatement[33:4->42:4]
+      IfStatement[38:4->47:4]
         Predicate:
-        BinaryExpression[33:8->33:33]
-          Name[33:8->33:22]
+        BinaryExpression[38:8->38:33]
+          Name[38:8->38:22]
           output_filename
           !=
-          NullPointerLiteral[33:27->33:33]
+          NullPointerLiteral[38:27->38:33]
         Then:
-        BlockStatement[33:36->42:4]
-          VariableDeclaration[34:8->34:97]
-            NamedType[34:8->34:11]
+        BlockStatement[38:36->47:4]
+          VariableDeclaration[39:8->39:89]
+            NamedType[39:8->39:11]
               auto
             open_result
-            FunctionCall[34:27->34:97]
-              Name[34:27->34:52]
-              Core::DeprecatedFile::open
-              Name[34:54->34:68]
+            FunctionCall[39:27->39:89]
+              Name[39:27->39:42]
+              Core::File::open
+              Name[39:44->39:58]
               output_filename
-              Name[34:71->34:95]
-              Core::OpenMode::WriteOnly
-          IfStatement[35:8->39:8]
+              Name[39:61->39:87]
+              Core::File::OpenMode::Write
+          IfStatement[40:8->44:8]
             Predicate:
-            FunctionCall[35:12->35:34]
-              MemberExpression[35:12->35:32]
-                Name[35:12->35:22]
+            FunctionCall[40:12->40:34]
+              MemberExpression[40:12->40:32]
+                Name[40:12->40:22]
                 open_result
-                Identifier[35:24->35:31]
+                Identifier[40:24->40:31]
                 is_error
             Then:
-            BlockStatement[35:36->39:8]
-              FunctionCall[36:12->36:80]
-                Name[36:12->36:16]
+            BlockStatement[40:36->44:8]
+              FunctionCall[41:12->41:80]
+                Name[41:12->41:16]
                 outln
-                Name[36:18->36:23]
+                Name[41:18->41:23]
                 stderr
-                StringLiteral[36:26->36:57]
+                StringLiteral[41:26->41:57]
                   ""Failed to open output file: {}""
-                FunctionCall[36:60->36:79]
-                  MemberExpression[36:60->36:77]
-                    Name[36:60->36:70]
+                FunctionCall[41:60->41:79]
+                  MemberExpression[41:60->41:77]
+                    Name[41:60->41:70]
                     open_result
-                    Identifier[36:72->36:76]
+                    Identifier[41:72->41:76]
                     error
-              ReturnStatement[37:12->37:20]
-                NumericLiteral[37:19->37:19]
+              ReturnStatement[42:12->42:20]
+                NumericLiteral[42:19->42:19]
                 1
-          AssignmentExpression[39:8->39:40]
-            Name[39:8->39:17]
+          AssignmentExpression[44:8->44:48]
+            Name[44:8->44:17]
             trace_file
             =
-            FunctionCall[39:21->39:40]
-              MemberExpression[39:21->39:38]
-                Name[39:21->39:31]
+            FunctionCall[44:21->44:48]
+              MemberExpression[44:21->44:46]
+                Name[44:21->44:31]
                 open_result
-                Identifier[39:33->39:37]
-                value
-      IfStatement[42:4->47:4]
+                Identifier[44:33->44:45]
+                release_value
+      IfStatement[47:4->52:4]
         Predicate:
-        BinaryExpression[42:8->42:62]
-          FunctionCall[42:8->42:60]
-            Name[42:8->42:13]
+        BinaryExpression[47:8->47:62]
+          FunctionCall[47:8->47:60]
+            Name[47:8->47:13]
             pledge
-            StringLiteral[42:15->42:48]
+            StringLiteral[47:15->47:48]
               ""stdio proc exec ptrace sigaction""
-            NullPointerLiteral[42:51->42:57]
+            NullPointerLiteral[47:51->47:57]
           <
-          NumericLiteral[42:62->42:62]
+          NumericLiteral[47:62->47:62]
           0
         Then:
-        BlockStatement[42:65->47:4]
-          FunctionCall[43:8->43:24]
-            Name[43:8->43:13]
+        BlockStatement[47:65->52:4]
+          FunctionCall[48:8->48:24]
+            Name[48:8->48:13]
             perror
-            StringLiteral[43:15->43:22]
+            StringLiteral[48:15->48:22]
               ""pledge""
-          ReturnStatement[44:8->44:16]
-            NumericLiteral[44:15->44:15]
+          ReturnStatement[49:8->49:16]
+            NumericLiteral[49:15->49:15]
             1
-      VariableDeclaration[47:4->47:14]
-        NamedType[47:4->47:6]
+      VariableDeclaration[52:4->52:14]
+        NamedType[52:4->52:6]
           int
         status
-      IfStatement[48:4->81:4]
+      IfStatement[53:4->86:4]
         Predicate:
-        BinaryExpression[48:8->48:18]
-          Name[48:8->48:12]
+        BinaryExpression[53:8->53:18]
+          Name[53:8->53:12]
           g_pid
           ==
-          UnaryExpression[48:17->48:18]
+          UnaryExpression[53:17->53:18]
             -
-            NumericLiteral[48:18->48:18]
+            NumericLiteral[53:18->53:18]
             1
         Then:
-        BlockStatement[48:21->81:4]
-          IfStatement[49:8->54:8]
+        BlockStatement[53:21->86:4]
+          IfStatement[54:8->59:8]
             Predicate:
-            FunctionCall[49:12->49:33]
-              MemberExpression[49:12->49:31]
-                Name[49:12->49:21]
+            FunctionCall[54:12->54:33]
+              MemberExpression[54:12->54:31]
+                Name[54:12->54:21]
                 child_argv
-                Identifier[49:23->49:30]
+                Identifier[54:23->54:30]
                 is_empty
             Then:
-            BlockStatement[49:35->54:8]
-              FunctionCall[50:12->50:78]
-                Name[50:12->50:16]
+            BlockStatement[54:35->59:8]
+              FunctionCall[55:12->55:78]
+                Name[55:12->55:16]
                 outln
-                Name[50:18->50:23]
+                Name[55:18->55:23]
                 stderr
-                StringLiteral[50:26->50:76]
+                StringLiteral[55:26->55:76]
                   ""strace: Expected either a pid or some arguments\n""
-              ReturnStatement[51:12->51:20]
-                NumericLiteral[51:19->51:19]
+              ReturnStatement[56:12->56:20]
+                NumericLiteral[56:19->56:19]
                 1
-          FunctionCall[54:8->54:34]
-            MemberExpression[54:8->54:25]
-              Name[54:8->54:17]
+          FunctionCall[59:8->59:34]
+            MemberExpression[59:8->59:25]
+              Name[59:8->59:17]
               child_argv
-              Identifier[54:19->54:24]
+              Identifier[59:19->59:24]
               append
-            NullPointerLiteral[54:26->54:32]
-          VariableDeclaration[55:8->55:24]
-            NamedType[55:8->55:10]
+            NullPointerLiteral[59:26->59:32]
+          VariableDeclaration[60:8->60:24]
+            NamedType[60:8->60:10]
               int
             pid
-            FunctionCall[55:18->55:24]
-              Name[55:18->55:21]
+            FunctionCall[60:18->60:24]
+              Name[60:18->60:21]
               fork
-          IfStatement[56:8->61:8]
+          IfStatement[61:8->66:8]
             Predicate:
-            BinaryExpression[56:12->56:18]
-              Name[56:12->56:14]
+            BinaryExpression[61:12->61:18]
+              Name[61:12->61:14]
               pid
               <
-              NumericLiteral[56:18->56:18]
+              NumericLiteral[61:18->61:18]
               0
             Then:
-            BlockStatement[56:21->61:8]
-              FunctionCall[57:12->57:26]
-                Name[57:12->57:17]
+            BlockStatement[61:21->66:8]
+              FunctionCall[62:12->62:26]
+                Name[62:12->62:17]
                 perror
-                StringLiteral[57:19->57:24]
+                StringLiteral[62:19->62:24]
                   ""fork""
-              ReturnStatement[58:12->58:20]
-                NumericLiteral[58:19->58:19]
+              ReturnStatement[63:12->63:20]
+                NumericLiteral[63:19->63:19]
                 1
-          IfStatement[61:8->74:8]
+          IfStatement[66:8->79:8]
             Predicate:
-            UnaryExpression[61:12->61:15]
+            UnaryExpression[66:12->66:15]
               !
-              Name[61:13->61:15]
+              Name[66:13->66:15]
               pid
             Then:
-            BlockStatement[61:18->74:8]
-              IfStatement[62:12->66:12]
+            BlockStatement[66:18->79:8]
+              IfStatement[67:12->71:12]
                 Predicate:
-                BinaryExpression[62:16->62:49]
-                  FunctionCall[62:16->62:45]
-                    Name[62:16->62:21]
+                BinaryExpression[67:16->67:49]
+                  FunctionCall[67:16->67:45]
+                    Name[67:16->67:21]
                     ptrace
-                    Name[62:23->62:33]
+                    Name[67:23->67:33]
                     PT_TRACE_ME
-                    NumericLiteral[62:36->62:36]
+                    NumericLiteral[67:36->67:36]
                     0
-                    NumericLiteral[62:39->62:39]
+                    NumericLiteral[67:39->67:39]
                     0
-                    NumericLiteral[62:42->62:42]
+                    NumericLiteral[67:42->67:42]
                     0
                   ==
-                  UnaryExpression[62:48->62:49]
+                  UnaryExpression[67:48->67:49]
                     -
-                    NumericLiteral[62:49->62:49]
+                    NumericLiteral[67:49->67:49]
                     1
                 Then:
-                BlockStatement[62:52->66:12]
-                  FunctionCall[63:16->63:33]
-                    Name[63:16->63:21]
+                BlockStatement[67:52->71:12]
+                  FunctionCall[68:16->68:33]
+                    Name[68:16->68:21]
                     perror
-                    StringLiteral[63:23->63:31]
+                    StringLiteral[68:23->68:31]
                       ""traceme""
-                  ReturnStatement[64:16->64:24]
-                    NumericLiteral[64:23->64:23]
+                  ReturnStatement[69:16->69:24]
+                    NumericLiteral[69:23->69:23]
                     1
-              VariableDeclaration[66:12->66:86]
-                NamedType[66:12->66:14]
+              VariableDeclaration[71:12->71:86]
+                NamedType[71:12->71:14]
                   int
                 rc
-                FunctionCall[66:21->66:86]
-                  Name[66:21->66:26]
+                FunctionCall[71:21->71:86]
+                  Name[71:21->71:26]
                   execvp
-                  FunctionCall[66:28->66:46]
-                    MemberExpression[66:28->66:44]
-                      Name[66:28->66:37]
+                  FunctionCall[71:28->71:46]
+                    MemberExpression[71:28->71:44]
+                      Name[71:28->71:37]
                       child_argv
-                      Identifier[66:39->66:43]
+                      Identifier[71:39->71:43]
                       first
-                  CppCastExpression[66:48->66:85]
+                  CppCastExpression[71:48->71:85]
                   const_cast
                     <
-                    Pointer[66:59->66:64]
-                      Pointer[66:59->66:64]
-                        NamedType[66:59->66:63]
+                    Pointer[71:59->71:64]
+                      Pointer[71:59->71:64]
+                        NamedType[71:59->71:63]
                           char
                     >
-                    FunctionCall[66:67->66:84]
-                      MemberExpression[66:67->66:82]
-                        Name[66:67->66:76]
+                    FunctionCall[71:67->71:84]
+                      MemberExpression[71:67->71:82]
+                        Name[71:67->71:76]
                         child_argv
-                        Identifier[66:78->66:81]
+                        Identifier[71:78->71:81]
                         data
-              IfStatement[67:12->71:12]
+              IfStatement[72:12->76:12]
                 Predicate:
-                BinaryExpression[67:16->67:21]
-                  Name[67:16->67:17]
+                BinaryExpression[72:16->72:21]
+                  Name[72:16->72:17]
                   rc
                   <
-                  NumericLiteral[67:21->67:21]
+                  NumericLiteral[72:21->72:21]
                   0
                 Then:
-                BlockStatement[67:24->71:12]
-                  FunctionCall[68:16->68:32]
-                    Name[68:16->68:21]
+                BlockStatement[72:24->76:12]
+                  FunctionCall[73:16->73:32]
+                    Name[73:16->73:21]
                     perror
-                    StringLiteral[68:23->68:30]
+                    StringLiteral[73:23->73:30]
                       ""execvp""
-                  FunctionCall[69:16->69:23]
-                    Name[69:16->69:19]
+                  FunctionCall[74:16->74:23]
+                    Name[74:16->74:19]
                     exit
-                    NumericLiteral[69:21->69:21]
+                    NumericLiteral[74:21->74:21]
                     1
-              FunctionCall[71:12->71:32]
-                Name[71:12->71:29]
+              FunctionCall[76:12->76:32]
+                Name[76:12->76:29]
                 VERIFY_NOT_REACHED
-          AssignmentExpression[74:8->74:18]
-            Name[74:8->74:12]
+          AssignmentExpression[79:8->79:18]
+            Name[79:8->79:12]
             g_pid
             =
-            Name[74:16->74:18]
+            Name[79:16->79:18]
             pid
-          IfStatement[75:8->79:4]
+          IfStatement[80:8->84:4]
             Predicate:
-            BinaryExpression[75:12->75:83]
-              FunctionCall[75:12->75:54]
-                Name[75:12->75:18]
+            BinaryExpression[80:12->80:83]
+              FunctionCall[80:12->80:54]
+                Name[80:12->80:18]
                 waitpid
-                Name[75:20->75:22]
+                Name[80:20->80:22]
                 pid
-                UnaryExpression[75:25->75:31]
+                UnaryExpression[80:25->80:31]
                   &
-                  Name[75:26->75:31]
+                  Name[80:26->80:31]
                   status
-                BinaryExpression[75:34->75:51]
-                  Name[75:34->75:41]
+                BinaryExpression[80:34->80:51]
+                  Name[80:34->80:41]
                   WSTOPPED
                   |
-                  Name[75:45->75:51]
+                  Name[80:45->80:51]
                   WEXITED
               !=
-              BinaryExpression[75:57->75:83]
-                Name[75:57->75:59]
+              BinaryExpression[80:57->80:83]
+                Name[80:57->80:59]
                 pid
                 ||
-                UnaryExpression[75:64->75:83]
+                UnaryExpression[80:64->80:83]
                   !
-                  FunctionCall[75:65->75:83]
-                    Name[75:65->75:74]
+                  FunctionCall[80:65->80:83]
+                    Name[80:65->80:74]
                     WIFSTOPPED
-                    Name[75:76->75:81]
+                    Name[80:76->80:81]
                     status
             Then:
-            BlockStatement[75:85->79:4]
-              FunctionCall[76:12->76:29]
-                Name[76:12->76:17]
+            BlockStatement[80:85->84:4]
+              FunctionCall[81:12->81:29]
+                Name[81:12->81:17]
                 perror
-                StringLiteral[76:19->76:27]
+                StringLiteral[81:19->81:27]
                   ""waitpid""
-              ReturnStatement[77:12->77:20]
-                NumericLiteral[77:19->77:19]
+              ReturnStatement[82:12->82:20]
+                NumericLiteral[82:19->82:19]
                 1
-      VariableDeclaration[81:4->81:23]
-        NamedType[81:4->81:19]
+      VariableDeclaration[86:4->86:23]
+        NamedType[86:4->86:19]
           sigaction
         sa
-      FunctionCall[82:4->82:44]
-        Name[82:4->82:9]
+      FunctionCall[87:4->87:44]
+        Name[87:4->87:9]
         memset
-        UnaryExpression[82:11->82:13]
+        UnaryExpression[87:11->87:13]
           &
-          Name[82:12->82:13]
+          Name[87:12->87:13]
           sa
-        NumericLiteral[82:16->82:16]
+        NumericLiteral[87:16->87:16]
         0
-        SizeofExpression[82:19->82:43]
-          NamedType[82:26->82:41]
+        SizeofExpression[87:19->87:43]
+          NamedType[87:26->87:41]
             sigaction
-      AssignmentExpression[83:4->83:32]
-        MemberExpression[83:4->83:18]
-          Name[83:4->83:5]
+      AssignmentExpression[88:4->88:32]
+        MemberExpression[88:4->88:18]
+          Name[88:4->88:5]
           sa
-          Identifier[83:7->83:16]
+          Identifier[88:7->88:16]
           sa_handler
         =
-        Name[83:20->83:32]
+        Name[88:20->88:32]
         handle_sigint
-      FunctionCall[84:4->84:35]
-        Name[84:4->84:12]
+      FunctionCall[89:4->89:35]
+        Name[89:4->89:12]
         sigaction
-        Name[84:14->84:19]
+        Name[89:14->89:19]
         SIGINT
-        UnaryExpression[84:22->84:24]
+        UnaryExpression[89:22->89:24]
           &
-          Name[84:23->84:24]
+          Name[89:23->89:24]
           sa
-        NullPointerLiteral[84:27->84:33]
-      IfStatement[86:4->90:4]
+        NullPointerLiteral[89:27->89:33]
+      IfStatement[91:4->95:4]
         Predicate:
-        BinaryExpression[86:8->86:43]
-          FunctionCall[86:8->86:39]
-            Name[86:8->86:13]
+        BinaryExpression[91:8->91:43]
+          FunctionCall[91:8->91:39]
+            Name[91:8->91:13]
             ptrace
-            Name[86:15->86:23]
+            Name[91:15->91:23]
             PT_ATTACH
-            Name[86:26->86:30]
+            Name[91:26->91:30]
             g_pid
-            NumericLiteral[86:33->86:33]
+            NumericLiteral[91:33->91:33]
             0
-            NumericLiteral[86:36->86:36]
+            NumericLiteral[91:36->91:36]
             0
           ==
-          UnaryExpression[86:42->86:43]
+          UnaryExpression[91:42->91:43]
             -
-            NumericLiteral[86:43->86:43]
+            NumericLiteral[91:43->91:43]
             1
         Then:
-        BlockStatement[86:46->90:4]
-          FunctionCall[87:8->87:24]
-            Name[87:8->87:13]
+        BlockStatement[91:46->95:4]
+          FunctionCall[92:8->92:24]
+            Name[92:8->92:13]
             perror
-            StringLiteral[87:15->87:22]
+            StringLiteral[92:15->92:22]
               ""attach""
-          ReturnStatement[88:8->88:16]
-            NumericLiteral[88:15->88:15]
+          ReturnStatement[93:8->93:16]
+            NumericLiteral[93:15->93:15]
             1
-      IfStatement[90:4->95:4]
+      IfStatement[95:4->100:4]
         Predicate:
-        BinaryExpression[90:8->90:83]
-          FunctionCall[90:8->90:52]
-            Name[90:8->90:14]
+        BinaryExpression[95:8->95:83]
+          FunctionCall[95:8->95:52]
+            Name[95:8->95:14]
             waitpid
-            Name[90:16->90:20]
+            Name[95:16->95:20]
             g_pid
-            UnaryExpression[90:23->90:29]
+            UnaryExpression[95:23->95:29]
               &
-              Name[90:24->90:29]
+              Name[95:24->95:29]
               status
-            BinaryExpression[90:32->90:49]
-              Name[90:32->90:39]
+            BinaryExpression[95:32->95:49]
+              Name[95:32->95:39]
               WSTOPPED
               |
-              Name[90:43->90:49]
+              Name[95:43->95:49]
               WEXITED
           !=
-          BinaryExpression[90:55->90:83]
-            Name[90:55->90:59]
+          BinaryExpression[95:55->95:83]
+            Name[95:55->95:59]
             g_pid
             ||
-            UnaryExpression[90:64->90:83]
+            UnaryExpression[95:64->95:83]
               !
-              FunctionCall[90:65->90:83]
-                Name[90:65->90:74]
+              FunctionCall[95:65->95:83]
+                Name[95:65->95:74]
                 WIFSTOPPED
-                Name[90:76->90:81]
+                Name[95:76->95:81]
                 status
         Then:
-        BlockStatement[90:85->95:4]
-          FunctionCall[91:8->91:25]
-            Name[91:8->91:13]
+        BlockStatement[95:85->100:4]
+          FunctionCall[96:8->96:25]
+            Name[96:8->96:13]
             perror
-            StringLiteral[91:15->91:23]
+            StringLiteral[96:15->96:23]
               ""waitpid""
-          ReturnStatement[92:8->92:16]
-            NumericLiteral[92:15->92:15]
+          ReturnStatement[97:8->97:16]
+            NumericLiteral[97:15->97:15]
             1
-      ForStatement[95:4->143:4]
-        BlockStatement[95:13->143:4]
-          IfStatement[96:8->100:8]
+      ForStatement[100:4->149:4]
+        BlockStatement[100:13->149:4]
+          IfStatement[101:8->105:8]
             Predicate:
-            BinaryExpression[96:12->96:48]
-              FunctionCall[96:12->96:44]
-                Name[96:12->96:17]
+            BinaryExpression[101:12->101:48]
+              FunctionCall[101:12->101:44]
+                Name[101:12->101:17]
                 ptrace
-                Name[96:19->96:28]
+                Name[101:19->101:28]
                 PT_SYSCALL
-                Name[96:31->96:35]
+                Name[101:31->101:35]
                 g_pid
-                NumericLiteral[96:38->96:38]
+                NumericLiteral[101:38->101:38]
                 0
-                NumericLiteral[96:41->96:41]
+                NumericLiteral[101:41->101:41]
                 0
               ==
-              UnaryExpression[96:47->96:48]
+              UnaryExpression[101:47->101:48]
                 -
-                NumericLiteral[96:48->96:48]
+                NumericLiteral[101:48->101:48]
                 1
             Then:
-            BlockStatement[96:51->100:8]
-              FunctionCall[97:12->97:29]
-                Name[97:12->97:17]
+            BlockStatement[101:51->105:8]
+              FunctionCall[102:12->102:29]
+                Name[102:12->102:17]
                 perror
-                StringLiteral[97:19->97:27]
+                StringLiteral[102:19->102:27]
                   ""syscall""
-              ReturnStatement[98:12->98:20]
-                NumericLiteral[98:19->98:19]
+              ReturnStatement[103:12->103:20]
+                NumericLiteral[103:19->103:19]
                 1
-          IfStatement[100:8->104:8]
+          IfStatement[105:8->109:8]
             Predicate:
-            BinaryExpression[100:12->100:87]
-              FunctionCall[100:12->100:56]
-                Name[100:12->100:18]
+            BinaryExpression[105:12->105:87]
+              FunctionCall[105:12->105:56]
+                Name[105:12->105:18]
                 waitpid
-                Name[100:20->100:24]
+                Name[105:20->105:24]
                 g_pid
-                UnaryExpression[100:27->100:33]
+                UnaryExpression[105:27->105:33]
                   &
-                  Name[100:28->100:33]
+                  Name[105:28->105:33]
                   status
-                BinaryExpression[100:36->100:53]
-                  Name[100:36->100:43]
+                BinaryExpression[105:36->105:53]
+                  Name[105:36->105:43]
                   WSTOPPED
                   |
-                  Name[100:47->100:53]
+                  Name[105:47->105:53]
                   WEXITED
               !=
-              BinaryExpression[100:59->100:87]
-                Name[100:59->100:63]
+              BinaryExpression[105:59->105:87]
+                Name[105:59->105:63]
                 g_pid
                 ||
-                UnaryExpression[100:68->100:87]
+                UnaryExpression[105:68->105:87]
                   !
-                  FunctionCall[100:69->100:87]
-                    Name[100:69->100:78]
+                  FunctionCall[105:69->105:87]
+                    Name[105:69->105:78]
                     WIFSTOPPED
-                    Name[100:80->100:85]
+                    Name[105:80->105:85]
                     status
             Then:
-            BlockStatement[100:89->104:8]
-              FunctionCall[101:12->101:30]
-                Name[101:12->101:17]
+            BlockStatement[105:89->109:8]
+              FunctionCall[106:12->106:30]
+                Name[106:12->106:17]
                 perror
-                StringLiteral[101:19->101:28]
+                StringLiteral[106:19->106:28]
                   ""wait_pid""
-              ReturnStatement[102:12->102:20]
-                NumericLiteral[102:19->102:19]
+              ReturnStatement[107:12->107:20]
+                NumericLiteral[107:19->107:19]
                 1
-          VariableDeclaration[104:8->104:33]
-            NamedType[104:8->104:22]
+          VariableDeclaration[109:8->109:33]
+            NamedType[109:8->109:22]
               PtraceRegisters
             regs
-            BracedInitList[104:31->104:33]
-          IfStatement[105:8->109:8]
+            BracedInitList[109:31->109:33]
+          IfStatement[110:8->114:8]
             Predicate:
-            BinaryExpression[105:12->105:52]
-              FunctionCall[105:12->105:48]
-                Name[105:12->105:17]
+            BinaryExpression[110:12->110:52]
+              FunctionCall[110:12->110:48]
+                Name[110:12->110:17]
                 ptrace
-                Name[105:19->105:28]
+                Name[110:19->110:28]
                 PT_GETREGS
-                Name[105:31->105:35]
+                Name[110:31->110:35]
                 g_pid
-                UnaryExpression[105:38->105:42]
+                UnaryExpression[110:38->110:42]
                   &
-                  Name[105:39->105:42]
+                  Name[110:39->110:42]
                   regs
-                NumericLiteral[105:45->105:45]
+                NumericLiteral[110:45->110:45]
                 0
               ==
-              UnaryExpression[105:51->105:52]
+              UnaryExpression[110:51->110:52]
                 -
-                NumericLiteral[105:52->105:52]
+                NumericLiteral[110:52->110:52]
                 1
             Then:
-            BlockStatement[105:55->109:8]
-              FunctionCall[106:12->106:29]
-                Name[106:12->106:17]
+            BlockStatement[110:55->114:8]
+              FunctionCall[111:12->111:29]
+                Name[111:12->111:17]
                 perror
-                StringLiteral[106:19->106:27]
+                StringLiteral[111:19->111:27]
                   ""getregs""
-              ReturnStatement[107:12->107:20]
-                NumericLiteral[107:19->107:19]
+              ReturnStatement[112:12->112:20]
+                NumericLiteral[112:19->112:19]
                 1
-          VariableDeclaration[109:8->109:36]
-            NamedType[109:8->109:10]
+          VariableDeclaration[114:8->114:36]
+            NamedType[114:8->114:10]
               u32
             syscall_index
-            MemberExpression[109:28->109:36]
-              Name[109:28->109:31]
+            MemberExpression[114:28->114:36]
+              Name[114:28->114:31]
               regs
-              Identifier[109:33->109:35]
+              Identifier[114:33->114:35]
               eax
-          VariableDeclaration[110:8->110:27]
-            NamedType[110:8->110:10]
+          VariableDeclaration[115:8->115:27]
+            NamedType[115:8->115:10]
               u32
             arg1
-            MemberExpression[110:19->110:27]
-              Name[110:19->110:22]
+            MemberExpression[115:19->115:27]
+              Name[115:19->115:22]
               regs
-              Identifier[110:24->110:26]
+              Identifier[115:24->115:26]
               edx
-          VariableDeclaration[111:8->111:27]
-            NamedType[111:8->111:10]
+          VariableDeclaration[116:8->116:27]
+            NamedType[116:8->116:10]
               u32
             arg2
-            MemberExpression[111:19->111:27]
-              Name[111:19->111:22]
+            MemberExpression[116:19->116:27]
+              Name[116:19->116:22]
               regs
-              Identifier[111:24->111:26]
+              Identifier[116:24->116:26]
               ecx
-          VariableDeclaration[112:8->112:27]
-            NamedType[112:8->112:10]
+          VariableDeclaration[117:8->117:27]
+            NamedType[117:8->117:10]
               u32
             arg3
-            MemberExpression[112:19->112:27]
-              Name[112:19->112:22]
+            MemberExpression[117:19->117:27]
+              Name[117:19->117:22]
               regs
-              Identifier[112:24->112:26]
+              Identifier[117:24->117:26]
               ebx
-          IfStatement[114:8->118:8]
+          IfStatement[119:8->123:8]
             Predicate:
-            BinaryExpression[114:12->114:48]
-              FunctionCall[114:12->114:44]
-                Name[114:12->114:17]
+            BinaryExpression[119:12->119:48]
+              FunctionCall[119:12->119:44]
+                Name[119:12->119:17]
                 ptrace
-                Name[114:19->114:28]
+                Name[119:19->119:28]
                 PT_SYSCALL
-                Name[114:31->114:35]
+                Name[119:31->119:35]
                 g_pid
-                NumericLiteral[114:38->114:38]
+                NumericLiteral[119:38->119:38]
                 0
-                NumericLiteral[114:41->114:41]
+                NumericLiteral[119:41->119:41]
                 0
               ==
-              UnaryExpression[114:47->114:48]
+              UnaryExpression[119:47->119:48]
                 -
-                NumericLiteral[114:48->114:48]
+                NumericLiteral[119:48->119:48]
                 1
             Then:
-            BlockStatement[114:51->118:8]
-              FunctionCall[115:12->115:29]
-                Name[115:12->115:17]
+            BlockStatement[119:51->123:8]
+              FunctionCall[120:12->120:29]
+                Name[120:12->120:17]
                 perror
-                StringLiteral[115:19->115:27]
+                StringLiteral[120:19->120:27]
                   ""syscall""
-              ReturnStatement[116:12->116:20]
-                NumericLiteral[116:19->116:19]
+              ReturnStatement[121:12->121:20]
+                NumericLiteral[121:19->121:19]
                 1
-          IfStatement[118:8->123:8]
+          IfStatement[123:8->128:8]
             Predicate:
-            BinaryExpression[118:12->118:87]
-              FunctionCall[118:12->118:56]
-                Name[118:12->118:18]
+            BinaryExpression[123:12->123:87]
+              FunctionCall[123:12->123:56]
+                Name[123:12->123:18]
                 waitpid
-                Name[118:20->118:24]
+                Name[123:20->123:24]
                 g_pid
-                UnaryExpression[118:27->118:33]
+                UnaryExpression[123:27->123:33]
                   &
-                  Name[118:28->118:33]
+                  Name[123:28->123:33]
                   status
-                BinaryExpression[118:36->118:53]
-                  Name[118:36->118:43]
+                BinaryExpression[123:36->123:53]
+                  Name[123:36->123:43]
                   WSTOPPED
                   |
-                  Name[118:47->118:53]
+                  Name[123:47->123:53]
                   WEXITED
               !=
-              BinaryExpression[118:59->118:87]
-                Name[118:59->118:63]
+              BinaryExpression[123:59->123:87]
+                Name[123:59->123:63]
                 g_pid
                 ||
-                UnaryExpression[118:68->118:87]
+                UnaryExpression[123:68->123:87]
                   !
-                  FunctionCall[118:69->118:87]
-                    Name[118:69->118:78]
+                  FunctionCall[123:69->123:87]
+                    Name[123:69->123:78]
                     WIFSTOPPED
-                    Name[118:80->118:85]
+                    Name[123:80->123:85]
                     status
             Then:
-            BlockStatement[118:89->123:8]
-              FunctionCall[119:12->119:30]
-                Name[119:12->119:17]
+            BlockStatement[123:89->128:8]
+              FunctionCall[124:12->124:30]
+                Name[124:12->124:17]
                 perror
-                StringLiteral[119:19->119:28]
+                StringLiteral[124:19->124:28]
                   ""wait_pid""
-              ReturnStatement[120:12->120:20]
-                NumericLiteral[120:19->120:19]
+              ReturnStatement[125:12->125:20]
+                NumericLiteral[125:19->125:19]
                 1
-          IfStatement[123:8->128:8]
+          IfStatement[128:8->133:8]
             Predicate:
-            BinaryExpression[123:12->123:52]
-              FunctionCall[123:12->123:48]
-                Name[123:12->123:17]
+            BinaryExpression[128:12->128:52]
+              FunctionCall[128:12->128:48]
+                Name[128:12->128:17]
                 ptrace
-                Name[123:19->123:28]
+                Name[128:19->128:28]
                 PT_GETREGS
-                Name[123:31->123:35]
+                Name[128:31->128:35]
                 g_pid
-                UnaryExpression[123:38->123:42]
+                UnaryExpression[128:38->128:42]
                   &
-                  Name[123:39->123:42]
+                  Name[128:39->128:42]
                   regs
-                NumericLiteral[123:45->123:45]
+                NumericLiteral[128:45->128:45]
                 0
               ==
-              UnaryExpression[123:51->123:52]
+              UnaryExpression[128:51->128:52]
                 -
-                NumericLiteral[123:52->123:52]
+                NumericLiteral[128:52->128:52]
                 1
             Then:
-            BlockStatement[123:55->128:8]
-              FunctionCall[124:12->124:29]
-                Name[124:12->124:17]
+            BlockStatement[128:55->133:8]
+              FunctionCall[129:12->129:29]
+                Name[129:12->129:17]
                 perror
-                StringLiteral[124:19->124:27]
+                StringLiteral[129:19->129:27]
                   ""getregs""
-              ReturnStatement[125:12->125:20]
-                NumericLiteral[125:19->125:19]
+              ReturnStatement[130:12->130:20]
+                NumericLiteral[130:19->130:19]
                 1
-          VariableDeclaration[128:8->128:26]
-            NamedType[128:8->128:10]
+          VariableDeclaration[133:8->133:26]
+            NamedType[133:8->133:10]
               u32
             res
-            MemberExpression[128:18->128:26]
-              Name[128:18->128:21]
+            MemberExpression[133:18->133:26]
+              Name[133:18->133:21]
               regs
-              Identifier[128:23->128:25]
+              Identifier[133:23->133:25]
               eax
-          VariableDeclaration[130:8->135:16]
-            NamedType[130:8->130:11]
+          VariableDeclaration[135:8->140:16]
+            NamedType[135:8->135:11]
               auto
             string
-            FunctionCall[130:22->135:16]
-              Name[130:22->130:38]
+            FunctionCall[135:22->140:16]
+              Name[135:22->135:38]
               String::formatted
-              StringLiteral[130:40->130:77]
+              StringLiteral[135:40->135:77]
                 ""{}({:#08x}, {:#08x}, {:#08x})\t={}\n""
-              FunctionCall[131:12->131:64]
-                Name[131:12->131:29]
+              FunctionCall[136:12->136:64]
+                Name[136:12->136:29]
                 Syscall::to_string
-                CStyleCastExpression[131:31->131:63]
-                  NamedType[131:32->131:48]
+                CStyleCastExpression[136:31->136:63]
+                  NamedType[136:32->136:48]
                     Syscall::Function
-                  Name[131:50->131:62]
+                  Name[136:50->136:62]
                   syscall_index
-              Name[132:12->132:15]
+              Name[137:12->137:15]
               arg1
-              Name[133:12->133:15]
+              Name[138:12->138:15]
               arg2
-              Name[134:12->134:15]
+              Name[139:12->139:15]
               arg3
-              Name[135:12->135:14]
+              Name[140:12->140:14]
               res
-          IfStatement[137:8->141:4]
+          VariableDeclaration[142:8->142:53]
+            NamedType[142:8->142:11]
+              auto
+            result
+            BinaryExpression[142:22->142:53]
+              Name[142:22->142:31]
+              trace_file
+              ->
+              FunctionCall[142:34->142:53]
+                Name[142:34->142:44]
+                write_value
+                Name[142:46->142:51]
+                string
+          IfStatement[143:8->147:4]
             Predicate:
-            UnaryExpression[137:12->137:38]
-              !
-              BinaryExpression[137:13->137:38]
-                Name[137:13->137:22]
-                trace_file
-                ->
-                FunctionCall[137:25->137:38]
-                  Name[137:25->137:29]
-                  write
-                  Name[137:31->137:36]
-                  string
+            FunctionCall[143:12->143:29]
+              MemberExpression[143:12->143:27]
+                Name[143:12->143:17]
+                result
+                Identifier[143:19->143:26]
+                is_error
             Then:
-            BlockStatement[137:40->141:4]
-              FunctionCall[138:12->138:59]
-                Name[138:12->138:17]
+            BlockStatement[143:31->147:4]
+              FunctionCall[144:12->144:48]
+                Name[144:12->144:17]
                 warnln
-                StringLiteral[138:19->138:29]
+                StringLiteral[144:19->144:29]
                   ""write: {}""
-                BinaryExpression[138:32->138:58]
-                  Name[138:32->138:41]
-                  trace_file
+                BinaryExpression[144:32->144:47]
+                  Name[144:32->144:37]
+                  result
                   ->
-                  FunctionCall[138:44->138:58]
-                    Name[138:44->138:55]
-                    error_string
-              ReturnStatement[139:12->139:20]
-                NumericLiteral[139:19->139:19]
+                  FunctionCall[144:40->144:47]
+                    Name[144:40->144:44]
+                    error
+              ReturnStatement[145:12->145:20]
+                NumericLiteral[145:19->145:19]
                 1
-      ReturnStatement[143:4->143:12]
-        NumericLiteral[143:11->143:11]
+      ReturnStatement[149:4->149:12]
+        NumericLiteral[149:11->149:11]
         0
     }
diff --git a/Userland/Libraries/LibCpp/Tests/parser/strace.cpp b/Userland/Libraries/LibCpp/Tests/parser/strace.cpp
index b7f1c2d6d1c8..c005e67a8a66 100644
--- a/Userland/Libraries/LibCpp/Tests/parser/strace.cpp
+++ b/Userland/Libraries/LibCpp/Tests/parser/strace.cpp
@@ -20,7 +20,12 @@ int main(int argc, char** argv)
     Vector<const char*> child_argv;
 
     const char* output_filename = nullptr;
-    auto trace_file = Core::DeprecatedFile::standard_error();
+    auto trace_file_or_error = Core::File::standard_error();
+    if (trace_file_or_error.is_error()) {
+        outln(stderr, ""Failed to open stderr: {}"", trace_file_or_error.error());
+        return 1;
+    }
+    auto trace_file = trace_file_or_error.release_value();
 
     Core::ArgsParser parser;
     parser.set_general_help(
@@ -32,12 +37,12 @@ int main(int argc, char** argv)
     parser.parse(argc, argv);
 
     if (output_filename != nullptr) {
-        auto open_result = Core::DeprecatedFile::open(output_filename, Core::OpenMode::WriteOnly);
+        auto open_result = Core::File::open(output_filename, Core::File::OpenMode::Write);
         if (open_result.is_error()) {
             outln(stderr, ""Failed to open output file: {}"", open_result.error());
             return 1;
         }
-        trace_file = open_result.value();
+        trace_file = open_result.release_value();
     }
 
     if (pledge(""stdio proc exec ptrace sigaction"", nullptr) < 0) {
@@ -135,8 +140,9 @@ int main(int argc, char** argv)
             arg3,
             res);
 
-        if (!trace_file->write(string)) {
-            warnln(""write: {}"", trace_file->error_string());
+        auto result = trace_file->write_value(string);
+        if (result.is_error()) {
+            warnln(""write: {}"", result->error());
             return 1;
         }
     }"
f45d361f037509edc653e29c88ce591678e562fa,2022-03-31 04:40:47,Idan Horowitz,libweb: Replace ad-hoc EventHandler type with callback function typedef,False,Replace ad-hoc EventHandler type with callback function typedef,libweb,"diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp
index 0b6cdd61d4a3..850ee15e35b3 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp
@@ -510,18 +510,6 @@ static void generate_to_cpp(SourceGenerator& generator, ParameterType& parameter
         @cpp_name@ = @parameter.optional_default_value@L;
 )~~~"");
         }
-    } else if (parameter.type->name == ""EventHandler"") {
-        // x.onfoo = function() { ... }, x.onfoo = () => { ... }, x.onfoo = {}
-        // NOTE: Anything else than an object will be treated as null. This is because EventHandler has the [LegacyTreatNonObjectAsNull] extended attribute.
-        //       Yes, you can store objects in event handler attributes. They just get ignored when there's any attempt to invoke them.
-        // FIXME: Replace this with proper support for callback function types.
-
-        scoped_generator.append(R""~~~(
-    Optional<Bindings::CallbackType> @cpp_name@;
-    if (@js_name@@js_suffix@.is_object()) {
-        @cpp_name@ = Bindings::CallbackType { JS::make_handle(&@js_name@@js_suffix@.as_object()), HTML::incumbent_settings_object() };
-    }
-)~~~"");
     } else if (parameter.type->name == ""Promise"") {
         // NOTE: It's not clear to me where the implicit wrapping of non-Promise values in a resolved
         // Promise is defined in the spec; https://webidl.spec.whatwg.org/#idl-promise doesn't say
@@ -1350,17 +1338,6 @@ static void generate_wrap_statement(SourceGenerator& generator, String const& va
     } else if (type.name == ""Location"" || type.name == ""Promise"" || type.name == ""Uint8Array"" || type.name == ""Uint8ClampedArray"" || type.name == ""any"") {
         scoped_generator.append(R""~~~(
     @result_expression@ @value@;
-)~~~"");
-    } else if (type.name == ""EventHandler"") {
-        // FIXME: Replace this with proper support for callback function types.
-
-        scoped_generator.append(R""~~~(
-    if (!@value@) {
-        @result_expression@ JS::js_null();
-    } else {
-        VERIFY(!@value@->callback.is_null());
-        @result_expression@ @value@->callback.cell();
-    }
 )~~~"");
     } else if (is<IDL::UnionType>(type)) {
         TODO();
diff --git a/Userland/Libraries/LibWeb/CSS/MediaQueryList.idl b/Userland/Libraries/LibWeb/CSS/MediaQueryList.idl
index cd8fa551197c..21178328bb4c 100644
--- a/Userland/Libraries/LibWeb/CSS/MediaQueryList.idl
+++ b/Userland/Libraries/LibWeb/CSS/MediaQueryList.idl
@@ -1,4 +1,5 @@
 #import <DOM/EventTarget.idl>
+#import <DOM/EventHandler.idl>
 
 [Exposed=Window]
 interface MediaQueryList : EventTarget {
diff --git a/Userland/Libraries/LibWeb/DOM/AbortSignal.idl b/Userland/Libraries/LibWeb/DOM/AbortSignal.idl
index 82b26fd5e635..4c11a9ba6ac1 100644
--- a/Userland/Libraries/LibWeb/DOM/AbortSignal.idl
+++ b/Userland/Libraries/LibWeb/DOM/AbortSignal.idl
@@ -1,4 +1,5 @@
 #import <DOM/EventTarget.idl>
+#import <DOM/EventHandler.idl>
 
 [Exposed=(Window,Worker), CustomVisit]
 interface AbortSignal : EventTarget {
diff --git a/Userland/Libraries/LibWeb/DOM/Document.idl b/Userland/Libraries/LibWeb/DOM/Document.idl
index f681407e87ab..b656ecc2dfad 100644
--- a/Userland/Libraries/LibWeb/DOM/Document.idl
+++ b/Userland/Libraries/LibWeb/DOM/Document.idl
@@ -5,6 +5,7 @@
 #import <DOM/DocumentType.idl>
 #import <DOM/Element.idl>
 #import <DOM/Event.idl>
+#import <DOM/EventHandler.idl>
 #import <DOM/HTMLCollection.idl>
 #import <DOM/Node.idl>
 #import <DOM/NodeFilter.idl>
diff --git a/Userland/Libraries/LibWeb/DOM/EventHandler.idl b/Userland/Libraries/LibWeb/DOM/EventHandler.idl
new file mode 100644
index 000000000000..afb850338330
--- /dev/null
+++ b/Userland/Libraries/LibWeb/DOM/EventHandler.idl
@@ -0,0 +1,3 @@
+[LegacyTreatNonObjectAsNull]
+callback EventHandlerNonNull = any (Event event);
+typedef EventHandlerNonNull? EventHandler;
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLElement.idl
index 8b5518ef1eb9..fb81dffd01c4 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLElement.idl
@@ -1,4 +1,5 @@
 #import <HTML/DOMStringMap.idl>
+#import <DOM/EventHandler.idl>
 
 interface HTMLElement : Element {
 
diff --git a/Userland/Libraries/LibWeb/HTML/MessagePort.idl b/Userland/Libraries/LibWeb/HTML/MessagePort.idl
index af03a2ce832d..3a8a92fc7b19 100644
--- a/Userland/Libraries/LibWeb/HTML/MessagePort.idl
+++ b/Userland/Libraries/LibWeb/HTML/MessagePort.idl
@@ -1,4 +1,5 @@
 #import <DOM/EventTarget.idl>
+#import <DOM/EventHandler.idl>
 
 interface MessagePort : EventTarget {
 
diff --git a/Userland/Libraries/LibWeb/HTML/Worker.idl b/Userland/Libraries/LibWeb/HTML/Worker.idl
index 73687379a10f..4f920533818b 100644
--- a/Userland/Libraries/LibWeb/HTML/Worker.idl
+++ b/Userland/Libraries/LibWeb/HTML/Worker.idl
@@ -1,3 +1,6 @@
+#import <DOM/EventTarget.idl>
+#import <DOM/EventHandler.idl>
+
 [Exposed=(Window)]
 interface Worker : EventTarget {
     constructor(DOMString scriptURL, optional WorkerOptions options = {});
diff --git a/Userland/Libraries/LibWeb/HTML/WorkerGlobalScope.idl b/Userland/Libraries/LibWeb/HTML/WorkerGlobalScope.idl
index 04117e1d4c77..28d1c1581f35 100644
--- a/Userland/Libraries/LibWeb/HTML/WorkerGlobalScope.idl
+++ b/Userland/Libraries/LibWeb/HTML/WorkerGlobalScope.idl
@@ -1,4 +1,5 @@
 #import <DOM/EventTarget.idl>
+#import <DOM/EventHandler.idl>
 #import <HTML/WorkerLocation.idl>
 #import <HTML/WorkerNavigator.idl>
 
diff --git a/Userland/Libraries/LibWeb/WebSockets/WebSocket.idl b/Userland/Libraries/LibWeb/WebSockets/WebSocket.idl
index 8457b84da6fc..ebd4545e6dbf 100644
--- a/Userland/Libraries/LibWeb/WebSockets/WebSocket.idl
+++ b/Userland/Libraries/LibWeb/WebSockets/WebSocket.idl
@@ -1,4 +1,5 @@
 #import <DOM/EventTarget.idl>
+#import <DOM/EventHandler.idl>
 
 interface WebSocket : EventTarget {
 
diff --git a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.idl b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.idl
index b0de53a340a8..944f03c68350 100644
--- a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.idl
+++ b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.idl
@@ -1,4 +1,5 @@
 #import <XHR/XMLHttpRequestEventTarget.idl>
+#import <DOM/EventHandler.idl>
 
 enum XMLHttpRequestResponseType {
   """",
diff --git a/Userland/Libraries/LibWeb/XHR/XMLHttpRequestEventTarget.idl b/Userland/Libraries/LibWeb/XHR/XMLHttpRequestEventTarget.idl
index 1bedd16034c3..90e4ab187ec1 100644
--- a/Userland/Libraries/LibWeb/XHR/XMLHttpRequestEventTarget.idl
+++ b/Userland/Libraries/LibWeb/XHR/XMLHttpRequestEventTarget.idl
@@ -1,4 +1,5 @@
 #import <DOM/EventTarget.idl>
+#import <DOM/EventHandler.idl>
 
 interface XMLHttpRequestEventTarget : EventTarget {"
365fa05a8256d1ba44cff5d05c44dda5021571e9,2020-09-15 00:48:59,Tom,kernel: Handle safe_memcpy/safe_memset/safe_strnlen faults in irq handlers,False,Handle safe_memcpy/safe_memset/safe_strnlen faults in irq handlers,kernel,"diff --git a/Kernel/Arch/i386/CPU.cpp b/Kernel/Arch/i386/CPU.cpp
index d1a9ccb136ec..ca5425cffde6 100644
--- a/Kernel/Arch/i386/CPU.cpp
+++ b/Kernel/Arch/i386/CPU.cpp
@@ -401,9 +401,23 @@ void page_fault_handler(TrapFrame* trap)
     dump(regs);
 #endif
 
-    bool faulted_in_userspace = (regs.cs & 3) == 3;
+    bool faulted_in_kernel = !(regs.cs & 3);
+
+    if (faulted_in_kernel && Processor::current().in_irq()) {
+        // If we're faulting in an IRQ handler, first check if we failed
+        // due to safe_memcpy, safe_strnlen, or safe_memset. If we did,
+        // gracefully continue immediately. Because we're in an IRQ handler
+        // we can't really try to resolve the page fault in a meaningful
+        // way, so we need to do this before calling into
+        // MemoryManager::handle_page_fault, which would just bail and
+        // request a crash
+        if (handle_safe_access_fault(regs, fault_address))
+            return;
+    }
+
+
     auto current_thread = Thread::current();
-    if (faulted_in_userspace && !MM.validate_user_stack(current_thread->process(), VirtualAddress(regs.userspace_esp))) {
+    if (!faulted_in_kernel && !MM.validate_user_stack(current_thread->process(), VirtualAddress(regs.userspace_esp))) {
         dbg() << ""Invalid stack pointer: "" << VirtualAddress(regs.userspace_esp);
         handle_crash(regs, ""Bad stack on page fault"", SIGSTKFLT);
         ASSERT_NOT_REACHED();
@@ -412,7 +426,7 @@ void page_fault_handler(TrapFrame* trap)
     auto response = MM.handle_page_fault(PageFault(regs.exception_code, VirtualAddress(fault_address)));
 
     if (response == PageFaultResponse::ShouldCrash || response == PageFaultResponse::OutOfMemory) {
-        if (!(regs.cs & 3) && handle_safe_access_fault(regs, fault_address)) {
+        if (faulted_in_kernel && handle_safe_access_fault(regs, fault_address)) {
             // If this would be a ring0 (kernel) fault and the fault was triggered by
             // safe_memcpy, safe_strnlen, or safe_memset then we resume execution at
             // the appropriate _fault label rather than crashing"
bf3e7d3ac43a16a8183b03c299b88702f493af82,2024-08-20 21:54:49,Timothy Flynn,libjs: Update spec steps/links for the ArrayBuffer transfer proposal,False,Update spec steps/links for the ArrayBuffer transfer proposal,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/ArrayBuffer.cpp b/Userland/Libraries/LibJS/Runtime/ArrayBuffer.cpp
index 64ab722f5c3a..c070ef28ca6f 100644
--- a/Userland/Libraries/LibJS/Runtime/ArrayBuffer.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ArrayBuffer.cpp
@@ -181,7 +181,63 @@ ThrowCompletionOr<ArrayBuffer*> allocate_array_buffer(VM& vm, FunctionObject& co
     return obj.ptr();
 }
 
-// 25.1.3.4 DetachArrayBuffer ( arrayBuffer [ , key ] ), https://tc39.es/ecma262/#sec-detacharraybuffer
+// 25.1.3.3 ArrayBufferCopyAndDetach ( arrayBuffer, newLength, preserveResizability ), https://tc39.es/ecma262/#sec-arraybuffercopyanddetach
+ThrowCompletionOr<ArrayBuffer*> array_buffer_copy_and_detach(VM& vm, ArrayBuffer& array_buffer, Value new_length, PreserveResizability preserve_resizability)
+{
+    auto& realm = *vm.current_realm();
+
+    // 1. Perform ? RequireInternalSlot(arrayBuffer, [[ArrayBufferData]]).
+
+    // 2. If IsSharedArrayBuffer(arrayBuffer) is true, throw a TypeError exception.
+    if (array_buffer.is_shared_array_buffer())
+        return vm.throw_completion<TypeError>(ErrorType::SharedArrayBuffer);
+
+    // 3. If newLength is undefined, then
+    //     a. Let newByteLength be arrayBuffer.[[ArrayBufferByteLength]].
+    // 4. Else,
+    //     a. Let newByteLength be ? ToIndex(newLength).
+    auto new_byte_length = new_length.is_undefined() ? array_buffer.byte_length() : TRY(new_length.to_index(vm));
+
+    // 5. If IsDetachedBuffer(arrayBuffer) is true, throw a TypeError exception.
+    if (array_buffer.is_detached())
+        return vm.throw_completion<TypeError>(ErrorType::DetachedArrayBuffer);
+
+    Optional<size_t> new_max_byte_length;
+
+    // 6. If preserveResizability is PRESERVE-RESIZABILITY and IsFixedLengthArrayBuffer(arrayBuffer) is false, then
+    if (preserve_resizability == PreserveResizability::PreserveResizability && !array_buffer.is_fixed_length()) {
+        // a. Let newMaxByteLength be arrayBuffer.[[ArrayBufferMaxByteLength]].
+        new_max_byte_length = array_buffer.max_byte_length();
+    }
+    // 7. Else,
+    else {
+        // a. Let newMaxByteLength be EMPTY.
+    }
+
+    // 8. If arrayBuffer.[[ArrayBufferDetachKey]] is not undefined, throw a TypeError exception.
+    if (!array_buffer.detach_key().is_undefined())
+        return vm.throw_completion<TypeError>(ErrorType::DetachKeyMismatch, array_buffer.detach_key(), js_undefined());
+
+    // 9. Let newBuffer be ? AllocateArrayBuffer(%ArrayBuffer%, newByteLength, newMaxByteLength).
+    auto* new_buffer = TRY(allocate_array_buffer(vm, realm.intrinsics().array_buffer_constructor(), new_byte_length, new_max_byte_length));
+
+    // 10. Let copyLength be min(newByteLength, arrayBuffer.[[ArrayBufferByteLength]]).
+    auto copy_length = min(new_byte_length, array_buffer.byte_length());
+
+    // 11. Let fromBlock be arrayBuffer.[[ArrayBufferData]].
+    // 12. Let toBlock be newBuffer.[[ArrayBufferData]].
+    // 13. Perform CopyDataBlockBytes(toBlock, 0, fromBlock, 0, copyLength).
+    // 14. NOTE: Neither creation of the new Data Block nor copying from the old Data Block are observable. Implementations may implement this method as a zero-copy move or a realloc.
+    copy_data_block_bytes(new_buffer->buffer(), 0, array_buffer.buffer(), 0, copy_length);
+
+    // 15. Perform ! DetachArrayBuffer(arrayBuffer).
+    TRY(detach_array_buffer(vm, array_buffer));
+
+    // 16. Return newBuffer.
+    return new_buffer;
+}
+
+// 25.1.3.5 DetachArrayBuffer ( arrayBuffer [ , key ] ), https://tc39.es/ecma262/#sec-detacharraybuffer
 ThrowCompletionOr<void> detach_array_buffer(VM& vm, ArrayBuffer& array_buffer, Optional<Value> key)
 {
     // 1. Assert: IsSharedArrayBuffer(arrayBuffer) is false.
@@ -203,7 +259,7 @@ ThrowCompletionOr<void> detach_array_buffer(VM& vm, ArrayBuffer& array_buffer, O
     return {};
 }
 
-// 25.1.3.5 CloneArrayBuffer ( srcBuffer, srcByteOffset, srcLength, cloneConstructor ), https://tc39.es/ecma262/#sec-clonearraybuffer
+// 25.1.3.6 CloneArrayBuffer ( srcBuffer, srcByteOffset, srcLength, cloneConstructor ), https://tc39.es/ecma262/#sec-clonearraybuffer
 ThrowCompletionOr<ArrayBuffer*> clone_array_buffer(VM& vm, ArrayBuffer& source_buffer, size_t source_byte_offset, size_t source_length)
 {
     auto& realm = *vm.current_realm();
@@ -227,7 +283,7 @@ ThrowCompletionOr<ArrayBuffer*> clone_array_buffer(VM& vm, ArrayBuffer& source_b
     return target_buffer;
 }
 
-// 25.1.3.6 GetArrayBufferMaxByteLengthOption ( options ), https://tc39.es/ecma262/#sec-getarraybuffermaxbytelengthoption
+// 25.1.3.7 GetArrayBufferMaxByteLengthOption ( options ), https://tc39.es/ecma262/#sec-getarraybuffermaxbytelengthoption
 ThrowCompletionOr<Optional<size_t>> get_array_buffer_max_byte_length_option(VM& vm, Value options)
 {
     // 1. If options is not an Object, return empty.
@@ -245,63 +301,6 @@ ThrowCompletionOr<Optional<size_t>> get_array_buffer_max_byte_length_option(VM&
     return TRY(max_byte_length.to_index(vm));
 }
 
-// 25.1.2.14 ArrayBufferCopyAndDetach ( arrayBuffer, newLength, preserveResizability ), https://tc39.es/proposal-arraybuffer-transfer/#sec-arraybuffer.prototype.transfertofixedlength
-ThrowCompletionOr<ArrayBuffer*> array_buffer_copy_and_detach(VM& vm, ArrayBuffer& array_buffer, Value new_length, PreserveResizability preserve_resizability)
-{
-    auto& realm = *vm.current_realm();
-
-    // 1. Perform ? RequireInternalSlot(arrayBuffer, [[ArrayBufferData]]).
-
-    // 2. If IsSharedArrayBuffer(arrayBuffer) is true, throw a TypeError exception.
-    if (array_buffer.is_shared_array_buffer())
-        return vm.throw_completion<TypeError>(ErrorType::SharedArrayBuffer);
-
-    // 3. If newLength is undefined, then
-    // a. Let newByteLength be arrayBuffer.[[ArrayBufferByteLength]].
-    // 4. Else,
-    // a. Let newByteLength be ? ToIndex(newLength).
-    auto new_byte_length = new_length.is_undefined() ? array_buffer.byte_length() : TRY(new_length.to_index(vm));
-
-    // 5. If IsDetachedBuffer(arrayBuffer) is true, throw a TypeError exception.
-    if (array_buffer.is_detached())
-        return vm.throw_completion<TypeError>(ErrorType::DetachedArrayBuffer);
-
-    Optional<size_t> new_max_byte_length;
-
-    // 6. If preserveResizability is preserve-resizability and IsResizableArrayBuffer(arrayBuffer) is true, then
-    // FIXME: The ArrayBuffer transfer spec is a bit out-of-date. IsResizableArrayBuffer no longer exists, we now have IsFixedLengthArrayBuffer.
-    if (preserve_resizability == PreserveResizability::PreserveResizability && !array_buffer.is_fixed_length()) {
-        // a. Let newMaxByteLength be arrayBuffer.[[ArrayBufferMaxByteLength]].
-        new_max_byte_length = array_buffer.max_byte_length();
-    }
-    // 7. Else,
-    else {
-        // a. Let newMaxByteLength be empty.
-    }
-
-    // 8. If arrayBuffer.[[ArrayBufferDetachKey]] is not undefined, throw a TypeError exception.
-    if (!array_buffer.detach_key().is_undefined())
-        return vm.throw_completion<TypeError>(ErrorType::DetachKeyMismatch, array_buffer.detach_key(), js_undefined());
-
-    // 9. Let newBuffer be ? AllocateArrayBuffer(%ArrayBuffer%, newByteLength, newMaxByteLength).
-    auto* new_buffer = TRY(allocate_array_buffer(vm, realm.intrinsics().array_buffer_constructor(), new_byte_length, new_max_byte_length));
-
-    // 10. Let copyLength be min(newByteLength, arrayBuffer.[[ArrayBufferByteLength]]).
-    auto copy_length = min(new_byte_length, array_buffer.byte_length());
-
-    // 11. Let fromBlock be arrayBuffer.[[ArrayBufferData]].
-    // 12. Let toBlock be newBuffer.[[ArrayBufferData]].
-    // 13. Perform CopyDataBlockBytes(toBlock, 0, fromBlock, 0, copyLength).
-    // 14. NOTE: Neither creation of the new Data Block nor copying from the old Data Block are observable. Implementations may implement this method as a zero-copy move or a realloc.
-    copy_data_block_bytes(new_buffer->buffer(), 0, array_buffer.buffer(), 0, copy_length);
-
-    // 15. Perform ! DetachArrayBuffer(arrayBuffer).
-    TRY(detach_array_buffer(vm, array_buffer));
-
-    // 16. Return newBuffer.
-    return new_buffer;
-}
-
 // 25.2.2.1 AllocateSharedArrayBuffer ( constructor, byteLength [ , maxByteLength ] ), https://tc39.es/ecma262/#sec-allocatesharedarraybuffer
 ThrowCompletionOr<NonnullGCPtr<ArrayBuffer>> allocate_shared_array_buffer(VM& vm, FunctionObject& constructor, size_t byte_length)
 {
diff --git a/Userland/Libraries/LibJS/Runtime/ArrayBuffer.h b/Userland/Libraries/LibJS/Runtime/ArrayBuffer.h
index 9f3a240afaa1..f2feae041251 100644
--- a/Userland/Libraries/LibJS/Runtime/ArrayBuffer.h
+++ b/Userland/Libraries/LibJS/Runtime/ArrayBuffer.h
@@ -83,7 +83,7 @@ class ArrayBuffer : public Object {
 
     void detach_buffer() { m_data_block.byte_buffer = Empty {}; }
 
-    // 25.1.3.3 IsDetachedBuffer ( arrayBuffer ), https://tc39.es/ecma262/#sec-isdetachedbuffer
+    // 25.1.3.4 IsDetachedBuffer ( arrayBuffer ), https://tc39.es/ecma262/#sec-isdetachedbuffer
     bool is_detached() const
     {
         // 1. If arrayBuffer.[[ArrayBufferData]] is null, return true.
@@ -93,7 +93,7 @@ class ArrayBuffer : public Object {
         return false;
     }
 
-    // 25.1.3.8 IsFixedLengthArrayBuffer ( arrayBuffer ), https://tc39.es/ecma262/#sec-isfixedlengtharraybuffer
+    // 25.1.3.9 IsFixedLengthArrayBuffer ( arrayBuffer ), https://tc39.es/ecma262/#sec-isfixedlengtharraybuffer
     bool is_fixed_length() const
     {
         // 1. If arrayBuffer has an [[ArrayBufferMaxByteLength]] internal slot, return false.
@@ -148,10 +148,10 @@ class ArrayBuffer : public Object {
 ThrowCompletionOr<DataBlock> create_byte_data_block(VM& vm, size_t size);
 void copy_data_block_bytes(ByteBuffer& to_block, u64 to_index, ByteBuffer const& from_block, u64 from_index, u64 count);
 ThrowCompletionOr<ArrayBuffer*> allocate_array_buffer(VM&, FunctionObject& constructor, size_t byte_length, Optional<size_t> const& max_byte_length = {});
+ThrowCompletionOr<ArrayBuffer*> array_buffer_copy_and_detach(VM&, ArrayBuffer& array_buffer, Value new_length, PreserveResizability preserve_resizability);
 ThrowCompletionOr<void> detach_array_buffer(VM&, ArrayBuffer& array_buffer, Optional<Value> key = {});
 ThrowCompletionOr<Optional<size_t>> get_array_buffer_max_byte_length_option(VM&, Value options);
 ThrowCompletionOr<ArrayBuffer*> clone_array_buffer(VM&, ArrayBuffer& source_buffer, size_t source_byte_offset, size_t source_length);
-ThrowCompletionOr<ArrayBuffer*> array_buffer_copy_and_detach(VM&, ArrayBuffer& array_buffer, Value new_length, PreserveResizability preserve_resizability);
 ThrowCompletionOr<NonnullGCPtr<ArrayBuffer>> allocate_shared_array_buffer(VM&, FunctionObject& constructor, size_t byte_length);
 
 // 25.1.3.2 ArrayBufferByteLength ( arrayBuffer, order ), https://tc39.es/ecma262/#sec-arraybufferbytelength
@@ -170,7 +170,7 @@ inline size_t array_buffer_byte_length(ArrayBuffer const& array_buffer, ArrayBuf
     return array_buffer.byte_length();
 }
 
-// 25.1.3.13 RawBytesToNumeric ( type, rawBytes, isLittleEndian ), https://tc39.es/ecma262/#sec-rawbytestonumeric
+// 25.1.3.14 RawBytesToNumeric ( type, rawBytes, isLittleEndian ), https://tc39.es/ecma262/#sec-rawbytestonumeric
 template<typename T>
 static Value raw_bytes_to_numeric(VM& vm, Bytes raw_value, bool is_little_endian)
 {
@@ -242,7 +242,7 @@ static Value raw_bytes_to_numeric(VM& vm, Bytes raw_value, bool is_little_endian
     }
 }
 
-// 25.1.3.15 GetValueFromBuffer ( arrayBuffer, byteIndex, type, isTypedArray, order [ , isLittleEndian ] ), https://tc39.es/ecma262/#sec-getvaluefrombuffer
+// 25.1.3.16 GetValueFromBuffer ( arrayBuffer, byteIndex, type, isTypedArray, order [ , isLittleEndian ] ), https://tc39.es/ecma262/#sec-getvaluefrombuffer
 template<typename T>
 Value ArrayBuffer::get_value(size_t byte_index, [[maybe_unused]] bool is_typed_array, Order, bool is_little_endian)
 {
@@ -288,7 +288,7 @@ Value ArrayBuffer::get_value(size_t byte_index, [[maybe_unused]] bool is_typed_a
     return raw_bytes_to_numeric<T>(vm, raw_value, is_little_endian);
 }
 
-// 25.1.3.16 NumericToRawBytes ( type, value, isLittleEndian ), https://tc39.es/ecma262/#sec-numerictorawbytes
+// 25.1.3.17 NumericToRawBytes ( type, value, isLittleEndian ), https://tc39.es/ecma262/#sec-numerictorawbytes
 template<typename T>
 static void numeric_to_raw_bytes(VM& vm, Value value, bool is_little_endian, Bytes raw_bytes)
 {
@@ -353,7 +353,7 @@ static void numeric_to_raw_bytes(VM& vm, Value value, bool is_little_endian, Byt
     }
 }
 
-// 25.1.3.17 SetValueInBuffer ( arrayBuffer, byteIndex, type, value, isTypedArray, order [ , isLittleEndian ] ), https://tc39.es/ecma262/#sec-setvalueinbuffer
+// 25.1.3.18 SetValueInBuffer ( arrayBuffer, byteIndex, type, value, isTypedArray, order [ , isLittleEndian ] ), https://tc39.es/ecma262/#sec-setvalueinbuffer
 template<typename T>
 void ArrayBuffer::set_value(size_t byte_index, Value value, [[maybe_unused]] bool is_typed_array, Order, bool is_little_endian)
 {
@@ -399,7 +399,7 @@ void ArrayBuffer::set_value(size_t byte_index, Value value, [[maybe_unused]] boo
     // 10. Return unused.
 }
 
-// 25.1.3.18 GetModifySetValueInBuffer ( arrayBuffer, byteIndex, type, value, op [ , isLittleEndian ] ), https://tc39.es/ecma262/#sec-getmodifysetvalueinbuffer
+// 25.1.3.19 GetModifySetValueInBuffer ( arrayBuffer, byteIndex, type, value, op [ , isLittleEndian ] ), https://tc39.es/ecma262/#sec-getmodifysetvalueinbuffer
 template<typename T>
 Value ArrayBuffer::get_modify_set_value(size_t byte_index, Value value, ReadWriteModifyFunction operation, bool is_little_endian)
 {
diff --git a/Userland/Libraries/LibJS/Runtime/ArrayBufferPrototype.cpp b/Userland/Libraries/LibJS/Runtime/ArrayBufferPrototype.cpp
index ff80b739e85f..1c778d599afd 100644
--- a/Userland/Libraries/LibJS/Runtime/ArrayBufferPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ArrayBufferPrototype.cpp
@@ -27,11 +27,11 @@ void ArrayBufferPrototype::initialize(Realm& realm)
     Base::initialize(realm);
     u8 attr = Attribute::Writable | Attribute::Configurable;
     define_native_accessor(realm, vm.names.byteLength, byte_length_getter, {}, Attribute::Configurable);
+    define_native_accessor(realm, vm.names.detached, detached_getter, {}, Attribute::Configurable);
     define_native_accessor(realm, vm.names.maxByteLength, max_byte_length, {}, Attribute::Configurable);
     define_native_accessor(realm, vm.names.resizable, resizable, {}, Attribute::Configurable);
     define_native_function(realm, vm.names.resize, resize, 1, attr);
     define_native_function(realm, vm.names.slice, slice, 2, attr);
-    define_native_accessor(realm, vm.names.detached, detached_getter, {}, Attribute::Configurable);
     define_native_function(realm, vm.names.transfer, transfer, 0, attr);
     define_native_function(realm, vm.names.transferToFixedLength, transfer_to_fixed_length, 0, attr);
 
@@ -57,7 +57,22 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayBufferPrototype::byte_length_getter)
     return Value(array_buffer_object->byte_length());
 }
 
-// 25.1.6.3 get ArrayBuffer.prototype.maxByteLength, https://tc39.es/ecma262/#sec-get-arraybuffer.prototype.maxbytelength
+// 25.1.6.3 get ArrayBuffer.prototype.detached, https://tc39.es/ecma262/#sec-get-arraybuffer.prototype.detached
+JS_DEFINE_NATIVE_FUNCTION(ArrayBufferPrototype::detached_getter)
+{
+    // 1. Let O be the this value.
+    // 2. Perform ? RequireInternalSlot(O, [[ArrayBufferData]]).
+    auto array_buffer_object = TRY(typed_this_value(vm));
+
+    // 3. If IsSharedArrayBuffer(O) is true, throw a TypeError exception.
+    if (array_buffer_object->is_shared_array_buffer())
+        return vm.throw_completion<TypeError>(ErrorType::SharedArrayBuffer);
+
+    // 4. Return IsDetachedBuffer(O).
+    return Value(array_buffer_object->is_detached());
+}
+
+// 25.1.6.4 get ArrayBuffer.prototype.maxByteLength, https://tc39.es/ecma262/#sec-get-arraybuffer.prototype.maxbytelength
 JS_DEFINE_NATIVE_FUNCTION(ArrayBufferPrototype::max_byte_length)
 {
     // 1. Let O be the this value.
@@ -89,7 +104,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayBufferPrototype::max_byte_length)
     return Value { length };
 }
 
-// 25.1.6.4 get ArrayBuffer.prototype.resizable, https://tc39.es/ecma262/#sec-get-arraybuffer.prototype.resizable
+// 25.1.6.5 get ArrayBuffer.prototype.resizable, https://tc39.es/ecma262/#sec-get-arraybuffer.prototype.resizable
 JS_DEFINE_NATIVE_FUNCTION(ArrayBufferPrototype::resizable)
 {
     // 1. Let O be the this value.
@@ -104,7 +119,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayBufferPrototype::resizable)
     return Value { !array_buffer_object->is_fixed_length() };
 }
 
-// 25.1.6.5 ArrayBuffer.prototype.resize ( newLength ), https://tc39.es/ecma262/#sec-arraybuffer.prototype.resize
+// 25.1.6.6 ArrayBuffer.prototype.resize ( newLength ), https://tc39.es/ecma262/#sec-arraybuffer.prototype.resize
 JS_DEFINE_NATIVE_FUNCTION(ArrayBufferPrototype::resize)
 {
     auto new_length = vm.argument(0);
@@ -161,7 +176,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayBufferPrototype::resize)
     return js_undefined();
 }
 
-// 25.1.6.6 ArrayBuffer.prototype.slice ( start, end ), https://tc39.es/ecma262/#sec-arraybuffer.prototype.slice
+// 25.1.6.7 ArrayBuffer.prototype.slice ( start, end ), https://tc39.es/ecma262/#sec-arraybuffer.prototype.slice
 JS_DEFINE_NATIVE_FUNCTION(ArrayBufferPrototype::slice)
 {
     auto& realm = *vm.current_realm();
@@ -270,39 +285,24 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayBufferPrototype::slice)
     return new_array_buffer_object;
 }
 
-// 25.1.5.4 get ArrayBuffer.prototype.detached, https://tc39.es/proposal-arraybuffer-transfer/#sec-get-arraybuffer.prototype.detached
-JS_DEFINE_NATIVE_FUNCTION(ArrayBufferPrototype::detached_getter)
-{
-    // 1. Let O be the this value.
-    // 2. Perform ? RequireInternalSlot(O, [[ArrayBufferData]]).
-    auto array_buffer_object = TRY(typed_this_value(vm));
-
-    // 3. If IsSharedArrayBuffer(O) is true, throw a TypeError exception.
-    if (array_buffer_object->is_shared_array_buffer())
-        return vm.throw_completion<TypeError>(ErrorType::SharedArrayBuffer);
-
-    // 4. Return IsDetachedBuffer(O).
-    return Value(array_buffer_object->is_detached());
-}
-
-// 25.1.5.5 ArrayBuffer.prototype.transfer ( [ newLength ] ), https://tc39.es/proposal-arraybuffer-transfer/#sec-arraybuffer.prototype.transfer
+// 25.1.6.8 ArrayBuffer.prototype.transfer ( [ newLength ] ), https://tc39.es/ecma262/#sec-arraybuffer.prototype.transfer
 JS_DEFINE_NATIVE_FUNCTION(ArrayBufferPrototype::transfer)
 {
     // 1. Let O be the this value.
     auto array_buffer_object = TRY(typed_this_value(vm));
 
-    // 2. Return ? ArrayBufferCopyAndDetach(O, newLength, preserve-resizability).
+    // 2. Return ? ArrayBufferCopyAndDetach(O, newLength, PRESERVE-RESIZABILITY).
     auto new_length = vm.argument(0);
     return TRY(array_buffer_copy_and_detach(vm, array_buffer_object, new_length, PreserveResizability::PreserveResizability));
 }
 
-// 25.1.5.6 ArrayBuffer.prototype.transferToFixedLength ( [ newLength ] ), https://tc39.es/proposal-arraybuffer-transfer/#sec-arraybuffer.prototype.transfertofixedlength
+// 25.1.6.9 ArrayBuffer.prototype.transferToFixedLength ( [ newLength ] ), https://tc39.es/ecma262/#sec-arraybuffer.prototype.transfertofixedlength
 JS_DEFINE_NATIVE_FUNCTION(ArrayBufferPrototype::transfer_to_fixed_length)
 {
     // 1. Let O be the this value.
     auto array_buffer_object = TRY(typed_this_value(vm));
 
-    // 2. Return ? ArrayBufferCopyAndDetach(O, newLength, fixed-length).
+    // 2. Return ? ArrayBufferCopyAndDetach(O, newLength, FIXED-LENGTH).
     auto new_length = vm.argument(0);
     return TRY(array_buffer_copy_and_detach(vm, array_buffer_object, new_length, PreserveResizability::FixedLength));
 }
diff --git a/Userland/Libraries/LibJS/Runtime/ArrayBufferPrototype.h b/Userland/Libraries/LibJS/Runtime/ArrayBufferPrototype.h
index c859623b2b37..72e95bd92168 100644
--- a/Userland/Libraries/LibJS/Runtime/ArrayBufferPrototype.h
+++ b/Userland/Libraries/LibJS/Runtime/ArrayBufferPrototype.h
@@ -23,11 +23,11 @@ class ArrayBufferPrototype final : public PrototypeObject<ArrayBufferPrototype,
     explicit ArrayBufferPrototype(Realm&);
 
     JS_DECLARE_NATIVE_FUNCTION(byte_length_getter);
+    JS_DECLARE_NATIVE_FUNCTION(detached_getter);
     JS_DECLARE_NATIVE_FUNCTION(max_byte_length);
     JS_DECLARE_NATIVE_FUNCTION(resizable);
     JS_DECLARE_NATIVE_FUNCTION(resize);
     JS_DECLARE_NATIVE_FUNCTION(slice);
-    JS_DECLARE_NATIVE_FUNCTION(detached_getter);
     JS_DECLARE_NATIVE_FUNCTION(transfer);
     JS_DECLARE_NATIVE_FUNCTION(transfer_to_fixed_length);
 };
diff --git a/Userland/Libraries/LibJS/Runtime/TypedArray.h b/Userland/Libraries/LibJS/Runtime/TypedArray.h
index 8e6592916629..4b95a68401e1 100644
--- a/Userland/Libraries/LibJS/Runtime/TypedArray.h
+++ b/Userland/Libraries/LibJS/Runtime/TypedArray.h
@@ -54,15 +54,15 @@ class TypedArrayBase : public Object {
     u32 element_size() const { return m_element_size; }
     virtual DeprecatedFlyString const& element_name() const = 0;
 
-    // 25.1.3.10 IsUnclampedIntegerElementType ( type ), https://tc39.es/ecma262/#sec-isunclampedintegerelementtype
+    // 25.1.3.11 IsUnclampedIntegerElementType ( type ), https://tc39.es/ecma262/#sec-isunclampedintegerelementtype
     virtual bool is_unclamped_integer_element_type() const = 0;
-    // 25.1.3.11 IsBigIntElementType ( type ), https://tc39.es/ecma262/#sec-isbigintelementtype
+    // 25.1.3.12 IsBigIntElementType ( type ), https://tc39.es/ecma262/#sec-isbigintelementtype
     virtual bool is_bigint_element_type() const = 0;
-    // 25.1.3.15 GetValueFromBuffer ( arrayBuffer, byteIndex, type, isTypedArray, order [ , isLittleEndian ] ), https://tc39.es/ecma262/#sec-getvaluefrombuffer
+    // 25.1.3.16 GetValueFromBuffer ( arrayBuffer, byteIndex, type, isTypedArray, order [ , isLittleEndian ] ), https://tc39.es/ecma262/#sec-getvaluefrombuffer
     virtual Value get_value_from_buffer(size_t byte_index, ArrayBuffer::Order, bool is_little_endian = true) const = 0;
-    // 25.1.3.17 SetValueInBuffer ( arrayBuffer, byteIndex, type, value, isTypedArray, order [ , isLittleEndian ] ), https://tc39.es/ecma262/#sec-setvalueinbuffer
+    // 25.1.3.18 SetValueInBuffer ( arrayBuffer, byteIndex, type, value, isTypedArray, order [ , isLittleEndian ] ), https://tc39.es/ecma262/#sec-setvalueinbuffer
     virtual void set_value_in_buffer(size_t byte_index, Value, ArrayBuffer::Order, bool is_little_endian = true) = 0;
-    // 25.1.3.18 GetModifySetValueInBuffer ( arrayBuffer, byteIndex, type, value, op ), https://tc39.es/ecma262/#sec-getmodifysetvalueinbuffer
+    // 25.1.3.19 GetModifySetValueInBuffer ( arrayBuffer, byteIndex, type, value, op ), https://tc39.es/ecma262/#sec-getmodifysetvalueinbuffer
     virtual Value get_modify_set_value_in_buffer(size_t byte_index, Value value, ReadWriteModifyFunction operation, bool is_little_endian = true) = 0;
 
 protected:
diff --git a/Userland/Libraries/LibJS/Runtime/VM.cpp b/Userland/Libraries/LibJS/Runtime/VM.cpp
index 57f3a6734d39..5ed5d02cb79f 100644
--- a/Userland/Libraries/LibJS/Runtime/VM.cpp
+++ b/Userland/Libraries/LibJS/Runtime/VM.cpp
@@ -146,7 +146,7 @@ VM::VM(OwnPtr<CustomData> custom_data, ErrorMessages error_messages)
         //       call HostEnsureCanAddPrivateElement when needed.
     };
 
-    // 25.1.3.7 HostResizeArrayBuffer ( buffer, newByteLength ), https://tc39.es/ecma262/#sec-hostresizearraybuffer
+    // 25.1.3.8 HostResizeArrayBuffer ( buffer, newByteLength ), https://tc39.es/ecma262/#sec-hostresizearraybuffer
     host_resize_array_buffer = [this](ArrayBuffer& buffer, size_t new_byte_length) -> ThrowCompletionOr<HandledByHost> {
         // The host-defined abstract operation HostResizeArrayBuffer takes arguments buffer (an ArrayBuffer) and
         // newByteLength (a non-negative integer) and returns either a normal completion containing either handled or"
495b0f2bcc2990b85e740b7971779396cc99e5ec,2023-11-29 20:17:14,Michiel Visser,libtls: Improve message when root certificate is invalid,False,Improve message when root certificate is invalid,libtls,"diff --git a/Userland/Libraries/LibTLS/TLSv12.cpp b/Userland/Libraries/LibTLS/TLSv12.cpp
index 96dc8fe71dc6..877d377ef470 100644
--- a/Userland/Libraries/LibTLS/TLSv12.cpp
+++ b/Userland/Libraries/LibTLS/TLSv12.cpp
@@ -208,7 +208,7 @@ void TLSv12::set_root_certificates(Vector<Certificate> certificates)
 
     for (auto& cert : certificates) {
         if (!cert.is_valid()) {
-            dbgln(""Certificate for {} by {} is invalid, things may or may not work!"", cert.subject.common_name(), cert.issuer.common_name());
+            dbgln(""Certificate for {} is invalid, things may or may not work!"", cert.subject.to_string());
         }
         // FIXME: Figure out what we should do when our root certs are invalid."
61060c0da8da19681b9768efbdf467534f70b54a,2020-09-10 15:31:26,Nico Weber,libvt: Let Terminal keep history in a circular buffer,False,Let Terminal keep history in a circular buffer,libvt,"diff --git a/Libraries/LibVT/Terminal.cpp b/Libraries/LibVT/Terminal.cpp
index bc49f82562c9..fd651408d2b0 100644
--- a/Libraries/LibVT/Terminal.cpp
+++ b/Libraries/LibVT/Terminal.cpp
@@ -52,6 +52,8 @@ void Terminal::clear()
 void Terminal::clear_including_history()
 {
     m_history.clear();
+    m_history_start = 0;
+
     clear();
 
     m_client.terminal_history_changed();
@@ -738,9 +740,7 @@ void Terminal::scroll_up()
     invalidate_cursor();
     if (m_scroll_region_top == 0) {
         auto line = move(m_lines.ptr_at(m_scroll_region_top));
-        m_history.append(move(line));
-        while (m_history.size() > max_history_size())
-            m_history.take_first();
+        add_line_to_history(move(line));
         m_client.terminal_history_changed();
     }
     m_lines.remove(m_scroll_region_top);
diff --git a/Libraries/LibVT/Terminal.h b/Libraries/LibVT/Terminal.h
index 49a73fd32e1e..fb1cea884c85 100644
--- a/Libraries/LibVT/Terminal.h
+++ b/Libraries/LibVT/Terminal.h
@@ -76,7 +76,7 @@ class Terminal {
     Line& line(size_t index)
     {
         if (index < m_history.size())
-            return m_history[index];
+            return m_history[(m_history_start + index) % m_history.size()];
         return m_lines[index - m_history.size()];
     }
     const Line& line(size_t index) const
@@ -154,7 +154,19 @@ class Terminal {
 
     TerminalClient& m_client;
 
+    size_t m_history_start = 0;
     NonnullOwnPtrVector<Line> m_history;
+    void add_line_to_history(NonnullOwnPtr<Line>&& line)
+    {
+        if (m_history.size() < max_history_size()) {
+            ASSERT(m_history_start == 0);
+            m_history.append(move(line));
+            return;
+        }
+        m_history.ptr_at(m_history_start) = move(line);
+        m_history_start = (m_history_start + 1) % m_history.size();
+    }
+
     NonnullOwnPtrVector<Line> m_lines;
 
     size_t m_scroll_region_top { 0 };"
14e2e2bac43d48fa546303ad07602dab8b1f6c83,2023-12-26 21:02:32,Sam Atkins,libweb: Parse grid track placements using TokenStream,False,Parse grid track placements using TokenStream,libweb,"diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
index 337c662bca05..2e79631c6c0c 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -5376,8 +5376,12 @@ RefPtr<StyleValue> Parser::parse_grid_auto_track_sizes(Vector<ComponentValue> co
     return GridTrackSizeListStyleValue::create(CSS::GridTrackSizeList(track_list, {}));
 }
 
-RefPtr<StyleValue> Parser::parse_grid_track_placement(Vector<ComponentValue> const& component_values)
+RefPtr<StyleValue> Parser::parse_grid_track_placement(TokenStream<ComponentValue>& tokens)
 {
+    // FIXME: This shouldn't be needed. Right now, the below code returns a StyleValue even if no tokens are consumed!
+    if (!tokens.has_next_token())
+        return nullptr;
+
     // https://www.w3.org/TR/css-grid-2/#line-placement
     // Line-based Placement: the grid-row-start, grid-column-start, grid-row-end, and grid-column-end properties
     // <grid-line> =
@@ -5391,59 +5395,65 @@ RefPtr<StyleValue> Parser::parse_grid_track_placement(Vector<ComponentValue> con
             return true;
         return false;
     };
-    auto is_identifier = [](auto& token) -> bool {
+    auto is_custom_ident = [](auto& token) -> bool {
         // The <custom-ident> additionally excludes the keywords span and auto.
-        if (token.is(Token::Type::Ident) && !token.token().ident().equals_ignoring_ascii_case(""span""sv) && !token.token().ident().equals_ignoring_ascii_case(""auto""sv))
+        if (token.is(Token::Type::Ident) && !token.is_ident(""span""sv) && !token.is_ident(""auto""sv))
             return true;
         return false;
     };
 
-    auto tokens = TokenStream { component_values };
-    tokens.skip_whitespace();
-    auto current_token = tokens.next_token();
+    auto transaction = tokens.begin_transaction();
 
-    if (!tokens.has_next_token()) {
-        if (current_token.is_ident(""auto""sv))
+    // FIXME: Handle the single-token case inside the loop instead, so that we can more easily call this from
+    //        `parse_grid_area_shorthand_value()` using a single TokenStream.
+    if (tokens.remaining_token_count() == 1) {
+        auto& token = tokens.next_token();
+        if (token.is_ident(""auto""sv)) {
+            transaction.commit();
             return GridTrackPlacementStyleValue::create(GridTrackPlacement::make_auto());
-        if (current_token.is_ident(""span""sv))
+        }
+        if (token.is_ident(""span""sv)) {
+            transaction.commit();
             return GridTrackPlacementStyleValue::create(GridTrackPlacement::make_span(1));
-        if (is_valid_integer(current_token))
-            return GridTrackPlacementStyleValue::create(GridTrackPlacement::make_line(static_cast<int>(current_token.token().number_value()), {}));
-        if (is_identifier(current_token))
-            return GridTrackPlacementStyleValue::create(GridTrackPlacement::make_line({}, current_token.token().to_string()));
+        }
+        if (is_valid_integer(token)) {
+            transaction.commit();
+            return GridTrackPlacementStyleValue::create(GridTrackPlacement::make_line(static_cast<int>(token.token().number_value()), {}));
+        }
+        if (is_custom_ident(token)) {
+            transaction.commit();
+            return GridTrackPlacementStyleValue::create(GridTrackPlacement::make_line({}, token.token().ident().to_string()));
+        }
         return nullptr;
     }
 
     auto span_value = false;
     auto span_or_position_value = 0;
     String identifier_value;
-    while (true) {
-        if (current_token.is_ident(""auto""sv))
+    while (tokens.has_next_token()) {
+        auto& token = tokens.peek_token();
+        if (token.is_ident(""auto""sv))
             return nullptr;
-        if (current_token.is_ident(""span""sv)) {
-            if (span_value == false)
-                span_value = true;
-            else
+        if (token.is_ident(""span""sv)) {
+            if (span_value)
                 return nullptr;
+            (void)tokens.next_token(); // span
+            span_value = true;
+            continue;
         }
-        if (is_valid_integer(current_token)) {
-            if (span_or_position_value == 0)
-                span_or_position_value = static_cast<int>(current_token.token().number_value());
-            else
+        if (is_valid_integer(token)) {
+            if (span_or_position_value != 0)
                 return nullptr;
+            span_or_position_value = static_cast<int>(tokens.next_token().token().to_integer());
+            continue;
         }
-        if (is_identifier(current_token)) {
-            if (identifier_value.is_empty()) {
-                identifier_value = current_token.token().ident().to_string();
-            } else {
+        if (is_custom_ident(token)) {
+            if (!identifier_value.is_empty())
                 return nullptr;
-            }
+            identifier_value = tokens.next_token().token().ident().to_string();
+            continue;
         }
-        tokens.skip_whitespace();
-        if (tokens.has_next_token())
-            current_token = tokens.next_token();
-        else
-            break;
+        break;
     }
 
     // Negative integers or zero are invalid.
@@ -5454,6 +5464,7 @@ RefPtr<StyleValue> Parser::parse_grid_track_placement(Vector<ComponentValue> con
     if (span_or_position_value == 0)
         span_or_position_value = 1;
 
+    transaction.commit();
     if (!identifier_value.is_empty())
         return GridTrackPlacementStyleValue::create(GridTrackPlacement::make_line(span_or_position_value, identifier_value));
     return GridTrackPlacementStyleValue::create(GridTrackPlacement::make_span(span_or_position_value));
@@ -5488,7 +5499,8 @@ RefPtr<StyleValue> Parser::parse_grid_track_placement_shorthand_value(PropertyID
         }
     }
 
-    auto parsed_start_value = parse_grid_track_placement(track_start_placement_tokens);
+    TokenStream track_start_placement_token_stream { track_start_placement_tokens };
+    auto parsed_start_value = parse_grid_track_placement(track_start_placement_token_stream);
     if (parsed_start_value && track_end_placement_tokens.is_empty()) {
         transaction.commit();
         return ShorthandStyleValue::create(property_id,
@@ -5496,7 +5508,8 @@ RefPtr<StyleValue> Parser::parse_grid_track_placement_shorthand_value(PropertyID
             { parsed_start_value.release_nonnull(), GridTrackPlacementStyleValue::create(GridTrackPlacement::make_auto()) });
     }
 
-    auto parsed_end_value = parse_grid_track_placement(track_end_placement_tokens);
+    TokenStream track_end_placement_token_stream { track_end_placement_tokens };
+    auto parsed_end_value = parse_grid_track_placement(track_end_placement_token_stream);
     if (parsed_start_value && parsed_end_value) {
         transaction.commit();
         return ShorthandStyleValue::create(property_id,
@@ -5559,15 +5572,11 @@ RefPtr<StyleValue> Parser::parse_grid_area_shorthand_value(TokenStream<Component
     auto transaction = tokens.begin_transaction();
 
     auto parse_placement_tokens = [&](Vector<ComponentValue>& placement_tokens, bool check_for_delimiter = true) -> void {
-        auto current_token = tokens.next_token();
-        while (true) {
+        while (tokens.has_next_token()) {
+            auto& current_token = tokens.next_token();
             if (check_for_delimiter && current_token.is_delim('/'))
                 break;
             placement_tokens.append(current_token);
-            tokens.skip_whitespace();
-            if (!tokens.has_next_token())
-                break;
-            current_token = tokens.next_token();
         }
     };
 
@@ -5589,10 +5598,25 @@ RefPtr<StyleValue> Parser::parse_grid_area_shorthand_value(TokenStream<Component
     // https://www.w3.org/TR/css-grid-2/#placement-shorthands
     // The grid-area property is a shorthand for grid-row-start, grid-column-start, grid-row-end and
     // grid-column-end.
-    auto row_start_style_value = parse_grid_track_placement(row_start_placement_tokens);
-    auto column_start_style_value = parse_grid_track_placement(column_start_placement_tokens);
-    auto row_end_style_value = parse_grid_track_placement(row_end_placement_tokens);
-    auto column_end_style_value = parse_grid_track_placement(column_end_placement_tokens);
+    TokenStream row_start_placement_token_stream { row_start_placement_tokens };
+    auto row_start_style_value = parse_grid_track_placement(row_start_placement_token_stream);
+    if (row_start_placement_token_stream.has_next_token())
+        return nullptr;
+
+    TokenStream column_start_placement_token_stream { column_start_placement_tokens };
+    auto column_start_style_value = parse_grid_track_placement(column_start_placement_token_stream);
+    if (column_start_placement_token_stream.has_next_token())
+        return nullptr;
+
+    TokenStream row_end_placement_token_stream { row_end_placement_tokens };
+    auto row_end_style_value = parse_grid_track_placement(row_end_placement_token_stream);
+    if (row_end_placement_token_stream.has_next_token())
+        return nullptr;
+
+    TokenStream column_end_placement_token_stream { column_end_placement_tokens };
+    auto column_end_style_value = parse_grid_track_placement(column_end_placement_token_stream);
+    if (column_end_placement_token_stream.has_next_token())
+        return nullptr;
 
     // If four <grid-line> values are specified, grid-row-start is set to the first value, grid-column-start
     // is set to the second value, grid-row-end is set to the third value, and grid-column-end is set to the
@@ -5833,11 +5857,11 @@ Parser::ParseErrorOr<NonnullRefPtr<StyleValue>> Parser::parse_css_value(Property
             return parsed_value.release_nonnull();
         return ParseError::SyntaxError;
     case PropertyID::GridColumnEnd:
-        if (auto parsed_value = parse_grid_track_placement(component_values))
+        if (auto parsed_value = parse_grid_track_placement(tokens); parsed_value && !tokens.has_next_token())
             return parsed_value.release_nonnull();
         return ParseError::SyntaxError;
     case PropertyID::GridColumnStart:
-        if (auto parsed_value = parse_grid_track_placement(component_values))
+        if (auto parsed_value = parse_grid_track_placement(tokens); parsed_value && !tokens.has_next_token())
             return parsed_value.release_nonnull();
         return ParseError::SyntaxError;
     case PropertyID::GridRow:
@@ -5845,11 +5869,11 @@ Parser::ParseErrorOr<NonnullRefPtr<StyleValue>> Parser::parse_css_value(Property
             return parsed_value.release_nonnull();
         return ParseError::SyntaxError;
     case PropertyID::GridRowEnd:
-        if (auto parsed_value = parse_grid_track_placement(component_values))
+        if (auto parsed_value = parse_grid_track_placement(tokens); parsed_value && !tokens.has_next_token())
             return parsed_value.release_nonnull();
         return ParseError::SyntaxError;
     case PropertyID::GridRowStart:
-        if (auto parsed_value = parse_grid_track_placement(component_values))
+        if (auto parsed_value = parse_grid_track_placement(tokens); parsed_value && !tokens.has_next_token())
             return parsed_value.release_nonnull();
         return ParseError::SyntaxError;
     case PropertyID::Grid:
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
index 77c7cb68f1b6..4499e4b39ff3 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
@@ -262,7 +262,7 @@ class Parser {
     RefPtr<StyleValue> parse_grid_auto_track_sizes(Vector<ComponentValue> const&);
     RefPtr<GridAutoFlowStyleValue> parse_grid_auto_flow_value(TokenStream<ComponentValue>&);
     RefPtr<StyleValue> parse_grid_track_size_list_shorthand_value(PropertyID, Vector<ComponentValue> const&);
-    RefPtr<StyleValue> parse_grid_track_placement(Vector<ComponentValue> const&);
+    RefPtr<StyleValue> parse_grid_track_placement(TokenStream<ComponentValue>&);
     RefPtr<StyleValue> parse_grid_track_placement_shorthand_value(PropertyID, TokenStream<ComponentValue>&);
     RefPtr<StyleValue> parse_grid_template_areas_value(TokenStream<ComponentValue>&);
     RefPtr<StyleValue> parse_grid_area_shorthand_value(TokenStream<ComponentValue>&);"
8ff3cd6d768adcd3c4b29028c0987c70b32c1336,2024-03-29 18:22:01,Timothy Flynn,ladybird: Reset the default favicon when starting a new page load,False,Reset the default favicon when starting a new page load,ladybird,"diff --git a/Ladybird/Qt/Tab.cpp b/Ladybird/Qt/Tab.cpp
index e5dd1e785b22..5d292058474b 100644
--- a/Ladybird/Qt/Tab.cpp
+++ b/Ladybird/Qt/Tab.cpp
@@ -42,6 +42,12 @@
 
 namespace Ladybird {
 
+static QIcon default_favicon()
+{
+    static QIcon icon = load_icon_from_uri(""resource://icons/16x16/app-browser.png""sv);
+    return icon;
+}
+
 static QIcon create_tvg_icon_with_theme_colors(QString name, QPalette const& palette)
 {
     auto path = QString("":/Icons/%1.tvg"").arg(name);
@@ -83,7 +89,7 @@ Tab::Tab(BrowserWindow* window, WebContentOptions const& web_content_options, St
 
     recreate_toolbar_icons();
 
-    m_favicon = load_icon_from_uri(""resource://icons/16x16/app-browser.png""sv);
+    m_favicon = default_favicon();
 
     m_toolbar->addAction(&m_window->go_back_action());
     m_toolbar->addAction(&m_window->go_forward_action());
@@ -136,6 +142,9 @@ Tab::Tab(BrowserWindow* window, WebContentOptions const& web_content_options, St
         m_title = url_serialized;
         emit title_changed(tab_index(), url_serialized);
 
+        m_favicon = default_favicon();
+        emit favicon_changed(tab_index(), m_favicon);
+
         m_location_edit->setText(url_serialized);
         m_location_edit->setCursorPosition(0);
 
diff --git a/Userland/Applications/Browser/Tab.cpp b/Userland/Applications/Browser/Tab.cpp
index 3626d8a4687b..02665485669c 100644
--- a/Userland/Applications/Browser/Tab.cpp
+++ b/Userland/Applications/Browser/Tab.cpp
@@ -231,6 +231,10 @@ Tab::Tab(BrowserWindow& window)
         if (on_title_change)
             on_title_change(m_title);
 
+        m_icon = g_icon_bag.default_favicon;
+        if (on_favicon_change)
+            on_favicon_change(*m_icon);
+
         update_status();
 
         m_location_box->set_icon(nullptr);"
176beeb08e8461f4fe0c43b7cb7aade9e53369c1,2023-03-06 18:35:43,Matthew Olsson,"libjs: Enforce proper const-propogation with {Nonnull,}GCPtr",False,"Enforce proper const-propogation with {Nonnull,}GCPtr",libjs,"diff --git a/Userland/Libraries/LibJS/Heap/GCPtr.h b/Userland/Libraries/LibJS/Heap/GCPtr.h
index ed7790ab02f9..8a821167f6c0 100644
--- a/Userland/Libraries/LibJS/Heap/GCPtr.h
+++ b/Userland/Libraries/LibJS/Heap/GCPtr.h
@@ -23,12 +23,6 @@ class NonnullGCPtr {
     {
     }
 
-    NonnullGCPtr(T const& ptr)
-    requires(!IsConst<T>)
-        : m_ptr(&const_cast<T&>(ptr))
-    {
-    }
-
     template<typename U>
     NonnullGCPtr(U& ptr)
     requires(IsConvertible<U*, T*>)
@@ -36,39 +30,43 @@ class NonnullGCPtr {
     {
     }
 
-    template<typename U>
-    NonnullGCPtr(U const& ptr)
-    requires(IsConvertible<U*, T*> && !IsConst<T>)
-        : m_ptr(&const_cast<T&>(static_cast<T const&>(ptr)))
+    NonnullGCPtr(NonnullGCPtr const& other)
+        : m_ptr(other.ptr())
     {
     }
 
     template<typename U>
-    NonnullGCPtr(NonnullGCPtr<U> ptr)
+    NonnullGCPtr(NonnullGCPtr<U> const& other)
     requires(IsConvertible<U*, T*>)
-        : m_ptr(ptr)
+        : m_ptr(other.ptr())
     {
     }
 
-    NonnullGCPtr& operator=(T const& other)
+    NonnullGCPtr& operator=(NonnullGCPtr const& other)
     {
-        m_ptr = &const_cast<T&>(other);
+        m_ptr = other.ptr();
         return *this;
     }
 
     template<typename U>
-    NonnullGCPtr& operator=(U const& other)
+    NonnullGCPtr& operator=(NonnullGCPtr<U> const& other)
     requires(IsConvertible<U*, T*>)
     {
-        m_ptr = &const_cast<T&>(static_cast<T const&>(other));
+        m_ptr = static_cast<T*>(other.ptr());
+        return *this;
+    }
+
+    NonnullGCPtr& operator=(T& other)
+    {
+        m_ptr = &other;
         return *this;
     }
 
     template<typename U>
-    NonnullGCPtr& operator=(NonnullGCPtr<U> const& other)
+    NonnullGCPtr& operator=(U& other)
     requires(IsConvertible<U*, T*>)
     {
-        m_ptr = const_cast<T*>(static_cast<T const*>(other.ptr()));
+        m_ptr = &static_cast<T&>(other);
         return *this;
     }
 
@@ -96,32 +94,20 @@ class GCPtr {
     {
     }
 
-    GCPtr(T const& ptr)
-    requires(!IsConst<T>)
-        : m_ptr(&const_cast<T&>(ptr))
-    {
-    }
-
     GCPtr(T* ptr)
         : m_ptr(ptr)
     {
     }
 
-    GCPtr(T const* ptr)
-    requires(!IsConst<T>)
-        : m_ptr(const_cast<T*>(ptr))
-    {
-    }
-
-    GCPtr(NonnullGCPtr<T> ptr)
-        : m_ptr(ptr)
+    GCPtr(NonnullGCPtr<T> const& other)
+        : m_ptr(other.ptr())
     {
     }
 
     template<typename U>
-    GCPtr(NonnullGCPtr<U> ptr)
+    GCPtr(NonnullGCPtr<U> const& other)
     requires(IsConvertible<U*, T*>)
-        : m_ptr(ptr)
+        : m_ptr(other.ptr())
     {
     }
 
@@ -137,13 +123,13 @@ class GCPtr {
     GCPtr& operator=(GCPtr<U> const& other)
     requires(IsConvertible<U*, T*>)
     {
-        m_ptr = const_cast<T*>(static_cast<T const*>(other.ptr()));
+        m_ptr = static_cast<T*>(other.ptr());
         return *this;
     }
 
     GCPtr& operator=(NonnullGCPtr<T> const& other)
     {
-        m_ptr = const_cast<T*>(other.ptr());
+        m_ptr = other.ptr();
         return *this;
     }
 
@@ -151,35 +137,35 @@ class GCPtr {
     GCPtr& operator=(NonnullGCPtr<U> const& other)
     requires(IsConvertible<U*, T*>)
     {
-        m_ptr = const_cast<T*>(static_cast<T const*>(other.ptr()));
+        m_ptr = static_cast<T*>(other.ptr());
         return *this;
     }
 
-    GCPtr& operator=(T const& other)
+    GCPtr& operator=(T& other)
     {
-        m_ptr = &const_cast<T&>(other);
+        m_ptr = &other;
         return *this;
     }
 
     template<typename U>
-    GCPtr& operator=(U const& other)
+    GCPtr& operator=(U& other)
     requires(IsConvertible<U*, T*>)
     {
-        m_ptr = &const_cast<T&>(static_cast<T const&>(other));
+        m_ptr = &static_cast<T&>(other);
         return *this;
     }
 
-    GCPtr& operator=(T const* other)
+    GCPtr& operator=(T* other)
     {
-        m_ptr = const_cast<T*>(other);
+        m_ptr = other;
         return *this;
     }
 
     template<typename U>
-    GCPtr& operator=(U const* other)
+    GCPtr& operator=(U* other)
     requires(IsConvertible<U*, T*>)
     {
-        m_ptr = const_cast<T*>(static_cast<T const*>(other));
+        m_ptr = static_cast<T*>(other);
         return *this;
     }"
0bd089b28295918ce07318d5de473101f97a7549,2021-09-01 21:36:14,Brian Gianforcaro,soundplayer: Fix file leak in M3UParser::from_file(..),False,Fix file leak in M3UParser::from_file(..),soundplayer,"diff --git a/Userland/Applications/SoundPlayer/M3UParser.cpp b/Userland/Applications/SoundPlayer/M3UParser.cpp
index 9efb0301688a..19e3dd5cbc65 100644
--- a/Userland/Applications/SoundPlayer/M3UParser.cpp
+++ b/Userland/Applications/SoundPlayer/M3UParser.cpp
@@ -7,6 +7,7 @@
 #include ""M3UParser.h""
 #include <AK/OwnPtr.h>
 #include <AK/RefPtr.h>
+#include <AK/ScopeGuard.h>
 #include <AK/Utf8View.h>
 
 M3UParser::M3UParser()
@@ -19,6 +20,7 @@ NonnullOwnPtr<M3UParser> M3UParser::from_file(const String path)
     VERIFY(!path.is_null() && !path.is_empty() && !path.is_whitespace());
     parser->m_use_utf8 = path.ends_with("".m3u8"", AK::CaseSensitivity::CaseInsensitive);
     FILE* file = fopen(path.characters(), ""r"");
+    ScopeGuard file_guard = [&] { fclose(file); };
     VERIFY(file != nullptr);
     fseek(file, 0, SEEK_END);
     size_t file_size = ftell(file);"
6133acb8c046c6d3efd0f06563c6bd8452c5771e,2022-03-07 15:23:57,Matthew Olsson,"libpdf: Allow newlines between xref table and ""trailer"" keyword",False,"Allow newlines between xref table and ""trailer"" keyword",libpdf,"diff --git a/Userland/Libraries/LibPDF/Parser.cpp b/Userland/Libraries/LibPDF/Parser.cpp
index 6be4afa9168e..38df8fb0dbfc 100644
--- a/Userland/Libraries/LibPDF/Parser.cpp
+++ b/Userland/Libraries/LibPDF/Parser.cpp
@@ -303,7 +303,7 @@ PDFErrorOr<NonnullRefPtr<XRefTable>> Parser::parse_xref_table()
 
     auto table = adopt_ref(*new XRefTable());
 
-    while (true) {
+    do {
         if (m_reader.matches(""trailer""))
             return table;
 
@@ -349,11 +349,16 @@ PDFErrorOr<NonnullRefPtr<XRefTable>> Parser::parse_xref_table()
         }
 
         table->add_section({ starting_index, object_count, entries });
-    }
+    } while (matches_number());
+
+    return table;
 }
 
 PDFErrorOr<NonnullRefPtr<DictObject>> Parser::parse_file_trailer()
 {
+    while (matches_eol())
+        consume_eol();
+
     if (!m_reader.matches(""trailer""))
         return error(""Expected \""trailer\"" keyword"");
     m_reader.move_by(7);"
80b2c11c81c17abf2cc2ff052d3310014563d623,2025-03-04 02:16:22,aplefull,libjs: Implement Math.sumPrecise,False,Implement Math.sumPrecise,libjs,"diff --git a/Libraries/LibJS/Runtime/CommonPropertyNames.h b/Libraries/LibJS/Runtime/CommonPropertyNames.h
index 9962d778a4ed..229539f4c989 100644
--- a/Libraries/LibJS/Runtime/CommonPropertyNames.h
+++ b/Libraries/LibJS/Runtime/CommonPropertyNames.h
@@ -499,6 +499,7 @@ namespace JS {
     P(substr)                                \
     P(substring)                             \
     P(subtract)                              \
+    P(sumPrecise)                            \
     P(sup)                                   \
     P(supportedLocalesOf)                    \
     P(supportedValuesOf)                     \
diff --git a/Libraries/LibJS/Runtime/ErrorTypes.h b/Libraries/LibJS/Runtime/ErrorTypes.h
index be99309b7615..206e4772ca0a 100644
--- a/Libraries/LibJS/Runtime/ErrorTypes.h
+++ b/Libraries/LibJS/Runtime/ErrorTypes.h
@@ -95,6 +95,7 @@
     M(JsonBigInt, ""Cannot serialize BigInt value to JSON"")                                                                          \
     M(JsonCircular, ""Cannot stringify circular object"")                                                                             \
     M(JsonMalformed, ""Malformed JSON string"")                                                                                       \
+    M(MathSumPreciseOverflow, ""Overflow in Math.sumPrecise"")                                                                        \
     M(MissingRequiredProperty, ""Required property {} is missing or undefined"")                                                      \
     M(ModuleNoEnvironment, ""Cannot find module environment for imported binding"")                                                   \
     M(ModuleNotFound, ""Cannot find/open module: '{}'"")                                                                              \
diff --git a/Libraries/LibJS/Runtime/MathObject.cpp b/Libraries/LibJS/Runtime/MathObject.cpp
index dc671cd80dbd..715b49655b3e 100644
--- a/Libraries/LibJS/Runtime/MathObject.cpp
+++ b/Libraries/LibJS/Runtime/MathObject.cpp
@@ -10,7 +10,9 @@
 #include <AK/BuiltinWrappers.h>
 #include <AK/Function.h>
 #include <AK/Random.h>
+#include <LibJS/Runtime/AbstractOperations.h>
 #include <LibJS/Runtime/GlobalObject.h>
+#include <LibJS/Runtime/Iterator.h>
 #include <LibJS/Runtime/MathObject.h>
 #include <LibJS/Runtime/ValueInlines.h>
 #include <math.h>
@@ -65,6 +67,7 @@ void MathObject::initialize(Realm& realm)
     define_native_function(realm, vm.names.sinh, sinh, 1, attr);
     define_native_function(realm, vm.names.cosh, cosh, 1, attr);
     define_native_function(realm, vm.names.tanh, tanh, 1, attr);
+    define_native_function(realm, vm.names.sumPrecise, sumPrecise, 1, attr);
 
     // 21.3.1 Value Properties of the Math Object, https://tc39.es/ecma262/#sec-value-properties-of-the-math-object
     define_direct_property(vm.names.E, Value(M_E), 0);
@@ -957,4 +960,241 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::trunc)
             : ::floor(number.as_double()));
 }
 
+struct TwoSumResult {
+    double hi;
+    double lo;
+};
+
+static TwoSumResult two_sum(double x, double y)
+{
+    double hi = x + y;
+    double lo = y - (hi - x);
+    return { hi, lo };
+}
+
+// https://tc39.es/proposal-math-sum/#sec-math.sumprecise
+ThrowCompletionOr<Value> MathObject::sum_precise_impl(VM& vm, Value iterable)
+{
+    constexpr double MAX_DOUBLE = 1.79769313486231570815e+308;         // std::numeric_limits<double>::max()
+    constexpr double PENULTIMATE_DOUBLE = 1.79769313486231550856e+308; // std::nextafter(DBL_MAX, 0)
+    constexpr double MAX_ULP = MAX_DOUBLE - PENULTIMATE_DOUBLE;
+    constexpr double POW_2_1023 = 8.98846567431158e+307; // 2^1023
+
+    // 1. Perform ? RequireObjectCoercible(items).
+    TRY(require_object_coercible(vm, iterable));
+
+    // 2. Let iteratorRecord be ? GetIterator(items, sync).
+    auto using_iterator = TRY(iterable.get_method(vm, vm.well_known_symbol_iterator()));
+    if (!using_iterator)
+        return vm.throw_completion<TypeError>(ErrorType::NotIterable, iterable.to_string_without_side_effects());
+
+    auto iterator = TRY(get_iterator_from_method(vm, iterable, *using_iterator));
+
+    enum State {
+        MinusZero,
+        PlusInfinity,
+        MinusInfinity,
+        NotANumber,
+        Finite
+    };
+
+    // 3. Let state be minus-zero.
+    State state = State::MinusZero;
+
+    // 4. Let sum be 0.
+    // 5. Let count be 0.
+    double overflow = 0.0;
+    u64 count = 0;
+    Vector<double> partials;
+
+    // 6. Let next be not-started.
+    // 7. Repeat, while next is not done
+    for (;;) {
+        // a. Set next to ? IteratorStepValue(iteratorRecord).
+        auto next = TRY(iterator_step_value(vm, iterator));
+
+        if (!next.has_value())
+            break;
+
+        // If next is not done, then
+        // i. Set count to count + 1.
+        count++;
+        // ii. If count ≥ 2**53, then
+        // 1. Let error be ThrowCompletion(a newly created RangeError object).
+        // 2. Return ? IteratorClose(iteratorRecord, error).
+        if (count >= (1ULL << 53))
+            return iterator_close(vm, iterator, vm.throw_completion<RangeError>(ErrorType::ArrayMaxSize));
+
+        // iii. NOTE: The above case is not expected to be reached in practice and is included only so that implementations may rely on inputs being
+        // ""reasonably sized"" without violating this specification.
+
+        // iv. If next is not a Number, then
+        auto value = next.value();
+        if (!value.is_number())
+            // 1. Let error be ThrowCompletion(a newly created TypeError object).
+            // 2. Return ? IteratorClose(iteratorRecord, error).
+            return iterator_close(vm, iterator, vm.throw_completion<TypeError>(ErrorType::IsNotA, value.to_string_without_side_effects(), ""number""));
+
+        // v. Let n be next.
+        auto n = value.as_double();
+
+        // vi. If state is not not-a-number, then
+        if (state != State::NotANumber) {
+            // 1. If n is NaN, then
+            if (isnan(n)) {
+                // a. Set state to not-a-number.
+                state = State::NotANumber;
+            } // 2. Else if n is +∞𝔽, then
+            else if (Value(n).is_positive_infinity()) {
+                // a. If state is minus-infinity, set state to not-a-number.
+                // b. Else, set state to plus-infinity.
+                state = (state == State::MinusInfinity) ? State::NotANumber : State::PlusInfinity;
+            } // 3. Else if n is -∞𝔽, then
+            else if (Value(n).is_negative_infinity()) {
+                // a. If state is plus-infinity, set state to not-a-number.
+                // b. Else, set state to minus-infinity.
+                state = (state == State::PlusInfinity) ? State::NotANumber : State::MinusInfinity;
+            } // 4. Else if n is not -0𝔽 and state is either minus-zero or finite, then
+            else if (!Value(n).is_negative_zero() && (state == State::MinusZero || state == State::Finite)) {
+                // a. Set state to finite.
+                state = State::Finite;
+
+                // b. Set sum to sum + ℝ(n).
+                double x = n;
+                size_t used_partials = 0;
+
+                for (size_t i = 0; i < partials.size(); i++) {
+                    double y = partials[i];
+
+                    if (AK::abs(x) < AK::abs(y))
+                        swap(x, y);
+
+                    TwoSumResult result = two_sum(x, y);
+                    double hi = result.hi;
+                    double lo = result.lo;
+
+                    if (isinf(hi)) {
+                        double sign = signbit(hi) ? -1.0 : 1.0;
+                        overflow += sign;
+
+                        if (AK::abs(overflow) >= (1ULL << 53))
+                            return vm.throw_completion<RangeError>(ErrorType::MathSumPreciseOverflow);
+
+                        x = (x - sign * POW_2_1023) - sign * POW_2_1023;
+
+                        if (AK::abs(x) < AK::abs(y))
+                            swap(x, y);
+
+                        result = two_sum(x, y);
+                        hi = result.hi;
+                        lo = result.lo;
+                    }
+
+                    if (lo != 0.0) {
+                        partials[used_partials++] = lo;
+                    }
+
+                    x = hi;
+                }
+
+                partials.resize(used_partials);
+
+                if (x != 0.0) {
+                    partials.append(x);
+                }
+            }
+        }
+    }
+
+    // 8. If state is not-a-number, return NaN.
+    if (state == State::NotANumber)
+        return js_nan();
+
+    // 9. If state is plus-infinity, return +∞𝔽.
+    if (state == State::PlusInfinity)
+        return js_infinity();
+
+    // 10. If state is minus-infinity, return -∞𝔽.
+    if (state == State::MinusInfinity)
+        return js_negative_infinity();
+
+    // 11. If state is minus-zero, return -0𝔽.
+    if (state == State::MinusZero)
+        return Value(-0.0);
+
+    // 12. Return 𝔽(sum).
+    int n = partials.size() - 1;
+    double hi = 0.0;
+    double lo = 0.0;
+
+    if (overflow != 0.0) {
+        double next = n >= 0 ? partials[n] : 0.0;
+        n--;
+
+        if (AK::abs(overflow) > 1.0 || (overflow > 0.0 && next > 0.0) || (overflow < 0.0 && next < 0.0)) {
+            return overflow > 0.0 ? js_infinity() : js_negative_infinity();
+        }
+
+        TwoSumResult result = two_sum(overflow * POW_2_1023, next / 2.0);
+        hi = result.hi;
+        lo = result.lo * 2.0;
+
+        if (isinf(hi * 2.0)) {
+            if (hi > 0.0) {
+                if (hi == POW_2_1023 && lo == -(MAX_ULP / 2.0) && n >= 0 && partials[n] < 0.0) {
+                    return Value(MAX_DOUBLE);
+                }
+
+                return js_infinity();
+            } else {
+                if (hi == -POW_2_1023 && lo == (MAX_ULP / 2.0) && n >= 0 && partials[n] > 0.0) {
+                    return Value(-MAX_DOUBLE);
+                }
+
+                return js_negative_infinity();
+            }
+        }
+
+        if (lo != 0.0) {
+            partials[n + 1] = lo;
+            n++;
+            lo = 0.0;
+        }
+
+        hi *= 2.0;
+    }
+
+    while (n >= 0) {
+        double x = hi;
+        double y = partials[n];
+        n--;
+
+        TwoSumResult result = two_sum(x, y);
+        hi = result.hi;
+        lo = result.lo;
+
+        if (lo != 0.0) {
+            break;
+        }
+    }
+
+    if (n >= 0 && ((lo < 0.0 && partials[n] < 0.0) || (lo > 0.0 && partials[n] > 0.0))) {
+        double y = lo * 2.0;
+        double x = hi + y;
+        double yr = x - hi;
+
+        if (y == yr) {
+            hi = x;
+        }
+    }
+
+    return Value(hi);
+}
+
+// https://tc39.es/proposal-math-sum/#sec-math.sumprecise
+JS_DEFINE_NATIVE_FUNCTION(MathObject::sumPrecise)
+{
+    return sum_precise_impl(vm, vm.argument(0));
+}
+
 }
diff --git a/Libraries/LibJS/Runtime/MathObject.h b/Libraries/LibJS/Runtime/MathObject.h
index c5705faf7702..12f415f2031f 100644
--- a/Libraries/LibJS/Runtime/MathObject.h
+++ b/Libraries/LibJS/Runtime/MathObject.h
@@ -26,6 +26,7 @@ class MathObject final : public Object {
     static ThrowCompletionOr<Value> round_impl(VM&, Value);
     static ThrowCompletionOr<Value> exp_impl(VM&, Value);
     static ThrowCompletionOr<Value> abs_impl(VM&, Value);
+    static ThrowCompletionOr<Value> sum_precise_impl(VM&, Value);
 
 private:
     explicit MathObject(Realm&);
@@ -66,6 +67,7 @@ class MathObject final : public Object {
     JS_DECLARE_NATIVE_FUNCTION(sinh);
     JS_DECLARE_NATIVE_FUNCTION(cosh);
     JS_DECLARE_NATIVE_FUNCTION(tanh);
+    JS_DECLARE_NATIVE_FUNCTION(sumPrecise);
 };
 
 }
diff --git a/Libraries/LibJS/Tests/builtins/Math/Math.sumPrecise.js b/Libraries/LibJS/Tests/builtins/Math/Math.sumPrecise.js
new file mode 100644
index 000000000000..464cc7f0d2ed
--- /dev/null
+++ b/Libraries/LibJS/Tests/builtins/Math/Math.sumPrecise.js
@@ -0,0 +1,97 @@
+test(""basic functionality"", () => {
+    expect(Math.sumPrecise).toHaveLength(1);
+
+    expect(Math.sumPrecise([])).toBe(-0);
+    expect(Math.sumPrecise([1, 2, 3])).toBe(6);
+    expect(Math.sumPrecise([1e308])).toBe(1e308);
+    expect(Math.sumPrecise([1e308, -1e308])).toBe(0);
+    expect(Math.sumPrecise([0.1])).toBe(0.1);
+    expect(Math.sumPrecise([0.1, 0.1])).toBe(0.2);
+    expect(Math.sumPrecise([0.1, -0.1])).toBe(0);
+    expect(Math.sumPrecise([1e308, 1e308, 0.1, 0.1, 1e30, 0.1, -1e30, -1e308, -1e308])).toBe(
+        0.30000000000000004
+    );
+    expect(Math.sumPrecise([1e30, 0.1, -1e30])).toBe(0.1);
+
+    expect(
+        Math.sumPrecise([8.98846567431158e307, 8.988465674311579e307, -1.7976931348623157e308])
+    ).toBe(9.9792015476736e291);
+    expect(
+        Math.sumPrecise([-5.630637621603525e255, 9.565271205476345e307, 2.9937604643020797e292])
+    ).toBe(9.565271205476347e307);
+    expect(
+        Math.sumPrecise([
+            6.739986666787661e66, 2, -1.2689709186578243e-116, 1.7046015739467354e308,
+            -9.979201547673601e291, 6.160926733208294e307, -3.179557053031852e234,
+            -7.027282978772846e307, -0.7500000000000001,
+        ])
+    ).toBe(1.61796594939028e308);
+    expect(
+        Math.sumPrecise([
+            0.31150493246968836, -8.988465674311582e307, 1.8315037361673755e-270,
+            -15.999999999999996, 2.9999999999999996, 7.345200721499384e164, -2.033582473639399,
+            -8.98846567431158e307, -3.5737295155405993e292, 4.13894772383715e-124,
+            -3.6111186457260667e-35, 2.387234887098013e180, 7.645295562778372e-298,
+            3.395189016861822e-103, -2.6331611115768973e-149,
+        ])
+    ).toBe(-Infinity);
+    expect(
+        Math.sumPrecise([
+            -1.1442589134409902e308, 9.593842098384855e138, 4.494232837155791e307,
+            -1.3482698511467367e308, 4.494232837155792e307,
+        ])
+    ).toBe(-1.5936821971565685e308);
+    expect(
+        Math.sumPrecise([
+            -1.1442589134409902e308, 4.494232837155791e307, -1.3482698511467367e308,
+            4.494232837155792e307,
+        ])
+    ).toBe(-1.5936821971565687e308);
+    expect(
+        Math.sumPrecise([
+            9.593842098384855e138, -6.948356297254111e307, -1.3482698511467367e308,
+            4.494232837155792e307,
+        ])
+    ).toBe(-1.5936821971565685e308);
+    expect(
+        Math.sumPrecise([-2.534858246857893e115, 8.988465674311579e307, 8.98846567431158e307]),
+        1.7976931348623157e308
+    );
+    expect(
+        Math.sumPrecise([1.3588124894186193e308, 1.4803986201152006e223, 6.741349255733684e307])
+    ).toBe(Infinity);
+    expect(
+        Math.sumPrecise([6.741349255733684e307, 1.7976931348623155e308, -7.388327292663961e41])
+    ).toBe(Infinity);
+    expect(
+        Math.sumPrecise([-1.9807040628566093e28, 1.7976931348623157e308, 9.9792015476736e291])
+    ).toBe(1.7976931348623157e308);
+    expect(
+        Math.sumPrecise([
+            -1.0214557991173964e61, 1.7976931348623157e308, 8.98846567431158e307,
+            -8.988465674311579e307,
+        ])
+    ).toBe(1.7976931348623157e308);
+    expect(
+        Math.sumPrecise([
+            1.7976931348623157e308, 7.999999999999999, -1.908963895403937e-230,
+            1.6445950082320264e292, 2.0734856707605806e205,
+        ])
+    ).toBe(Infinity);
+    expect(
+        Math.sumPrecise([6.197409167220438e-223, -9.979201547673601e291, -1.7976931348623157e308])
+    ).toBe(-Infinity);
+    expect(
+        Math.sumPrecise([
+            4.49423283715579e307, 8.944251746776101e307, -0.0002441406250000001,
+            1.1752060710043817e308, 4.940846717201632e292, -1.6836699406454528e308,
+        ])
+    ).toBe(8.353845887521184e307);
+    expect(
+        Math.sumPrecise([
+            8.988465674311579e307, 7.999999999999998, 7.029158107234023e-308,
+            -2.2303483759420562e-172, -1.7976931348623157e308, -8.98846567431158e307,
+        ])
+    ).toBe(-1.7976931348623157e308);
+    expect(Math.sumPrecise([8.98846567431158e307, 8.98846567431158e307])).toBe(Infinity);
+});"
4575ab558bcc33feb50b94405dec7a8c8604fc59,2022-03-28 01:26:21,Andreas Kling,libweb: Make whitespace collapsing stateless,False,Make whitespace collapsing stateless,libweb,"diff --git a/Userland/Libraries/LibWeb/Layout/InlineLevelIterator.cpp b/Userland/Libraries/LibWeb/Layout/InlineLevelIterator.cpp
index da9d88c92998..bb170e7536a5 100644
--- a/Userland/Libraries/LibWeb/Layout/InlineLevelIterator.cpp
+++ b/Userland/Libraries/LibWeb/Layout/InlineLevelIterator.cpp
@@ -123,11 +123,8 @@ Optional<InlineLevelIterator::Item> InlineLevelIterator::next(float available_wi
     if (is<Layout::TextNode>(*m_current_node)) {
         auto& text_node = static_cast<Layout::TextNode const&>(*m_current_node);
 
-        if (!m_text_node_context.has_value()) {
-            auto& line_boxes = m_formatting_state.get(m_container).line_boxes;
-            bool previous_is_empty_or_ends_in_whitespace = line_boxes.is_empty() || line_boxes.last().is_empty_or_ends_in_whitespace();
-            enter_text_node(text_node, previous_is_empty_or_ends_in_whitespace);
-        }
+        if (!m_text_node_context.has_value())
+            enter_text_node(text_node);
 
         auto chunk_opt = m_text_node_context->next_chunk;
         if (!chunk_opt.has_value()) {
@@ -225,7 +222,7 @@ Optional<InlineLevelIterator::Item> InlineLevelIterator::next(float available_wi
     return item;
 }
 
-void InlineLevelIterator::enter_text_node(Layout::TextNode const& text_node, bool previous_is_empty_or_ends_in_whitespace)
+void InlineLevelIterator::enter_text_node(Layout::TextNode const& text_node)
 {
     bool do_collapse = true;
     bool do_wrap_lines = true;
@@ -250,7 +247,7 @@ void InlineLevelIterator::enter_text_node(Layout::TextNode const& text_node, boo
     }
 
     // FIXME: The const_cast here is gross.
-    const_cast<TextNode&>(text_node).compute_text_for_rendering(do_collapse, previous_is_empty_or_ends_in_whitespace);
+    const_cast<TextNode&>(text_node).compute_text_for_rendering(do_collapse);
 
     m_text_node_context = TextNodeContext {
         .do_collapse = do_collapse,
diff --git a/Userland/Libraries/LibWeb/Layout/InlineLevelIterator.h b/Userland/Libraries/LibWeb/Layout/InlineLevelIterator.h
index 6709c9735fa4..21b7dd1a5e34 100644
--- a/Userland/Libraries/LibWeb/Layout/InlineLevelIterator.h
+++ b/Userland/Libraries/LibWeb/Layout/InlineLevelIterator.h
@@ -56,7 +56,7 @@ class InlineLevelIterator {
     void skip_to_next();
     void compute_next();
 
-    void enter_text_node(Layout::TextNode const&, bool previous_is_empty_or_ends_in_whitespace);
+    void enter_text_node(Layout::TextNode const&);
 
     void enter_node_with_box_model_metrics(Layout::NodeWithStyleAndBoxModelMetrics const&);
     void exit_node_with_box_model_metrics();
diff --git a/Userland/Libraries/LibWeb/Layout/TextNode.cpp b/Userland/Libraries/LibWeb/Layout/TextNode.cpp
index 089ab701a445..083f1500d419 100644
--- a/Userland/Libraries/LibWeb/Layout/TextNode.cpp
+++ b/Userland/Libraries/LibWeb/Layout/TextNode.cpp
@@ -32,8 +32,8 @@ static bool is_all_whitespace(StringView string)
     return true;
 }
 
-// NOTE: This collapes whitespace into a single ASCII space if collapse is true. If previous_is_empty_or_ends_in_whitespace, it also strips leading whitespace.
-void TextNode::compute_text_for_rendering(bool collapse, bool previous_is_empty_or_ends_in_whitespace)
+// NOTE: This collapses whitespace into a single ASCII space if collapse is true.
+void TextNode::compute_text_for_rendering(bool collapse)
 {
     auto& data = dom_node().data();
     if (!collapse || data.is_empty()) {
@@ -44,12 +44,8 @@ void TextNode::compute_text_for_rendering(bool collapse, bool previous_is_empty_
     // NOTE: A couple fast returns to avoid unnecessarily allocating a StringBuilder.
     if (data.length() == 1) {
         if (is_ascii_space(data[0])) {
-            if (previous_is_empty_or_ends_in_whitespace)
-                m_text_for_rendering = String::empty();
-            else {
-                static String s_single_space_string = "" "";
-                m_text_for_rendering = s_single_space_string;
-            }
+            static String s_single_space_string = "" "";
+            m_text_for_rendering = s_single_space_string;
         } else {
             m_text_for_rendering = data;
         }
@@ -76,8 +72,6 @@ void TextNode::compute_text_for_rendering(bool collapse, bool previous_is_empty_
             ++index;
     };
 
-    if (previous_is_empty_or_ends_in_whitespace)
-        skip_over_whitespace();
     while (index < data.length()) {
         if (is_ascii_space(data[index])) {
             builder.append(' ');
diff --git a/Userland/Libraries/LibWeb/Layout/TextNode.h b/Userland/Libraries/LibWeb/Layout/TextNode.h
index 3fcbd68e756c..f468b870890b 100644
--- a/Userland/Libraries/LibWeb/Layout/TextNode.h
+++ b/Userland/Libraries/LibWeb/Layout/TextNode.h
@@ -46,7 +46,7 @@ class TextNode : public Node {
         Utf8View::Iterator m_iterator;
     };
 
-    void compute_text_for_rendering(bool collapse, bool previous_is_empty_or_ends_in_whitespace);
+    void compute_text_for_rendering(bool collapse);
 
     virtual RefPtr<Painting::Paintable> create_paintable() const override;"
5f4da20a56cc27bf0894ead09bcab7a672b4712c,2023-04-10 01:15:39,Matthew Olsson,libweb: Implement WritableStreamDefaultWriter.close(),False,Implement WritableStreamDefaultWriter.close(),libweb,"diff --git a/Userland/Libraries/LibWeb/Streams/AbstractOperations.cpp b/Userland/Libraries/LibWeb/Streams/AbstractOperations.cpp
index 509518da8e40..167c3eb6679a 100644
--- a/Userland/Libraries/LibWeb/Streams/AbstractOperations.cpp
+++ b/Userland/Libraries/LibWeb/Streams/AbstractOperations.cpp
@@ -1321,6 +1321,19 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<WebIDL::Promise>> writable_stream_default_w
     return writable_stream_abort(*stream, reason);
 }
 
+// https://streams.spec.whatwg.org/#writable-stream-default-writer-close
+WebIDL::ExceptionOr<JS::NonnullGCPtr<WebIDL::Promise>> writable_stream_default_writer_close(WritableStreamDefaultWriter& writer)
+{
+    // 1. Let stream be writer.[[stream]].
+    auto stream = writer.stream();
+
+    // 2. Assert: stream is not undefined.
+    VERIFY(stream);
+
+    // 3. Return ! WritableStreamClose(stream).
+    return writable_stream_close(*stream);
+}
+
 // https://streams.spec.whatwg.org/#writable-stream-default-writer-ensure-ready-promise-rejected
 void writable_stream_default_writer_ensure_ready_promise_rejected(WritableStreamDefaultWriter& writer, JS::Value error)
 {
diff --git a/Userland/Libraries/LibWeb/Streams/AbstractOperations.h b/Userland/Libraries/LibWeb/Streams/AbstractOperations.h
index bc8ed2b42087..a104192b6cda 100644
--- a/Userland/Libraries/LibWeb/Streams/AbstractOperations.h
+++ b/Userland/Libraries/LibWeb/Streams/AbstractOperations.h
@@ -74,6 +74,7 @@ WebIDL::ExceptionOr<void> writable_stream_start_erroring(WritableStream&, JS::Va
 void writable_stream_update_backpressure(WritableStream&, bool backpressure);
 
 WebIDL::ExceptionOr<JS::NonnullGCPtr<WebIDL::Promise>> writable_stream_default_writer_abort(WritableStreamDefaultWriter&, JS::Value reason);
+WebIDL::ExceptionOr<JS::NonnullGCPtr<WebIDL::Promise>> writable_stream_default_writer_close(WritableStreamDefaultWriter&);
 void writable_stream_default_writer_ensure_ready_promise_rejected(WritableStreamDefaultWriter&, JS::Value error);
 Optional<double> writable_stream_default_writer_get_desired_size(WritableStreamDefaultWriter const&);
 
diff --git a/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.cpp b/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.cpp
index d393efb23f34..de9c927ad09b 100644
--- a/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.cpp
+++ b/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.cpp
@@ -64,6 +64,29 @@ WebIDL::ExceptionOr<JS::GCPtr<JS::Object>> WritableStreamDefaultWriter::abort(JS
     return TRY(writable_stream_default_writer_abort(*this, reason))->promise();
 }
 
+// https://streams.spec.whatwg.org/#default-writer-close
+WebIDL::ExceptionOr<JS::GCPtr<JS::Object>> WritableStreamDefaultWriter::close()
+{
+    auto& realm = this->realm();
+
+    // 1. Let stream be this.[[stream]].
+
+    // 2. If stream is undefined, return a promise rejected with a TypeError exception.
+    if (!m_stream) {
+        auto exception = MUST_OR_THROW_OOM(JS::TypeError::create(realm, ""Cannot close a writer that has no locked stream""sv));
+        return WebIDL::create_rejected_promise(realm, exception)->promise();
+    }
+
+    // 3. If ! WritableStreamCloseQueuedOrInFlight(stream) is true, return a promise rejected with a TypeError exception.
+    if (writable_stream_close_queued_or_in_flight(*m_stream)) {
+        auto exception = MUST_OR_THROW_OOM(JS::TypeError::create(realm, ""Cannot close a stream that is already closed or errored""sv));
+        return WebIDL::create_rejected_promise(realm, exception)->promise();
+    }
+
+    // 4. Return ! WritableStreamDefaultWriterClose(this).
+    return TRY(writable_stream_default_writer_close(*this))->promise();
+}
+
 WritableStreamDefaultWriter::WritableStreamDefaultWriter(JS::Realm& realm)
     : Bindings::PlatformObject(realm)
 {
diff --git a/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.h b/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.h
index e328613df977..e66620fae688 100644
--- a/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.h
+++ b/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.h
@@ -28,6 +28,7 @@ class WritableStreamDefaultWriter final : public Bindings::PlatformObject {
     WebIDL::ExceptionOr<Optional<double>> desired_size() const;
     JS::GCPtr<JS::Object> ready();
     WebIDL::ExceptionOr<JS::GCPtr<JS::Object>> abort(JS::Value reason);
+    WebIDL::ExceptionOr<JS::GCPtr<JS::Object>> close();
 
     JS::GCPtr<WebIDL::Promise> closed_promise() { return m_closed_promise; }
     void set_closed_promise(JS::GCPtr<WebIDL::Promise> value) { m_closed_promise = value; }
diff --git a/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.idl b/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.idl
index b61d6afb0df0..f1976344d2fc 100644
--- a/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.idl
+++ b/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultWriter.idl
@@ -9,9 +9,9 @@ interface WritableStreamDefaultWriter {
     readonly attribute Promise<undefined> ready;
 
     Promise<undefined> abort(optional any reason);
+    Promise<undefined> close();
 
     // FIXME:
-    // Promise<undefined> close();
     // undefined releaseLock();
     // Promise<undefined> write(optional any chunk);
 };"
d1dae5f4d1ad7e46bb2d1b52098ee3b5b7fdedc6,2021-06-09 18:43:32,Max Wipfli,ak: Implement IPv4Address::to_string_reversed(),False,Implement IPv4Address::to_string_reversed(),ak,"diff --git a/AK/IPv4Address.h b/AK/IPv4Address.h
index a4b36226ac12..09ea8e82003a 100644
--- a/AK/IPv4Address.h
+++ b/AK/IPv4Address.h
@@ -57,6 +57,15 @@ class [[gnu::packed]] IPv4Address {
             octet(SubnetClass::D));
     }
 
+    String to_string_reversed() const
+    {
+        return String::formatted(""{}.{}.{}.{}"",
+            octet(SubnetClass::D),
+            octet(SubnetClass::C),
+            octet(SubnetClass::B),
+            octet(SubnetClass::A));
+    }
+
     static Optional<IPv4Address> from_string(const StringView& string)
     {
         if (string.is_null())"
3e6a0a05338f1bd05276140528a3e15349cbbc2e,2019-09-01 16:04:14,Rhin,texteditor: Stopped disappearing text at end of document (#505),False,Stopped disappearing text at end of document (#505),texteditor,"diff --git a/Libraries/LibGUI/GTextEditor.cpp b/Libraries/LibGUI/GTextEditor.cpp
index 6fb7aa721977..53d3477290ad 100644
--- a/Libraries/LibGUI/GTextEditor.cpp
+++ b/Libraries/LibGUI/GTextEditor.cpp
@@ -139,7 +139,8 @@ GTextPosition GTextEditor::text_position_at(const Point& a_position) const
             if (position.y() >= rect.top() && position.y() <= rect.bottom()) {
                 line_index = i;
                 break;
-            }
+            } else if (position.y() > rect.bottom())
+                line_index = m_lines.size() - 1;
         }
     } else {
         line_index = position.y() / line_height();"
76af9fae63f56cb6309e5f2929869ed9a8cff239,2021-12-11 19:47:47,Timothy Flynn,libunicode: Support storing lists in UniqueStorage for code generators,False,Support storing lists in UniqueStorage for code generators,libunicode,"diff --git a/Meta/Lagom/Tools/CodeGenerators/LibUnicode/GeneratorUtil.h b/Meta/Lagom/Tools/CodeGenerators/LibUnicode/GeneratorUtil.h
index ec4fe94a9088..aff59fe3f14c 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibUnicode/GeneratorUtil.h
+++ b/Meta/Lagom/Tools/CodeGenerators/LibUnicode/GeneratorUtil.h
@@ -19,6 +19,12 @@
 #include <LibCore/File.h>
 #include <LibUnicode/Locale.h>
 
+template<class T>
+inline constexpr bool StorageTypeIsList = false;
+
+template<class T>
+inline constexpr bool StorageTypeIsList<Vector<T>> = true;
+
 template<typename StorageType, typename IndexType>
 class UniqueStorage {
 public:
@@ -57,7 +63,7 @@ class UniqueStorage {
         return m_storage.at(index - 1);
     }
 
-    void generate(SourceGenerator& generator, StringView type, StringView name, size_t max_values_per_row)
+    void generate(SourceGenerator& generator, StringView type, StringView name, size_t max_values_per_row) requires(!StorageTypeIsList<StorageType>)
     {
         generator.set(""type""sv, type);
         generator.set(""name""sv, name);
@@ -89,9 +95,64 @@ static constexpr Array<@type@, @size@ + 1> @name@ { {
 )~~~"");
     }
 
+    void generate(SourceGenerator& generator, StringView type, StringView name) requires(StorageTypeIsList<StorageType>)
+    {
+        generator.set(""type""sv, type);
+        generator.set(""name""sv, name);
+
+        for (size_t i = 0; i < m_storage.size(); ++i) {
+            auto const& list = m_storage[i];
+
+            generator.set(""index""sv, String::number(i));
+            generator.set(""size""sv, String::number(list.size()));
+
+            generator.append(R""~~~(
+static constexpr Array<@type@, @size@> @name@@index@ { {)~~~"");
+
+            bool first = true;
+            for (auto const& value : list) {
+                generator.append(first ? "" "" : "", "");
+                generator.append(String::formatted(""{}"", value));
+                first = false;
+            }
+
+            generator.append("" } };"");
+        }
+
+        generator.set(""size""sv, String::number(m_storage.size()));
+
+        generator.append(R""~~~(
+
+static constexpr Array<Span<@type@ const>, @size@ + 1> @name@ { {
+    {})~~~"");
+
+        constexpr size_t max_values_per_row = 10;
+        size_t values_in_current_row = 1;
+
+        for (size_t i = 0; i < m_storage.size(); ++i) {
+            if (values_in_current_row++ > 0)
+                generator.append("", "");
+
+            generator.set(""index""sv, String::number(i));
+            generator.append(""@name@@index@.span()"");
+
+            if (values_in_current_row == max_values_per_row) {
+                values_in_current_row = 0;
+                generator.append("",\n    "");
+            }
+        }
+
+        generator.append(R""~~~(
+} };
+)~~~"");
+    }
+
+    // clang-format off
+    // clang-format gets confused by the requires() clauses above, and formats this section very weirdly.
 private:
     Vector<StorageType> m_storage;
     HashMap<StorageType, IndexType> m_storage_indices;
+    // clang-format on
 };
 
 template<typename StringIndexType>"
64a226eaddc7a93a82b29a9dcff5a4b56a9d098a,2024-04-07 10:47:31,Tim Ledbetter,everywhere: Add spaces to generic types in IPC files,False,Add spaces to generic types in IPC files,everywhere,"diff --git a/Userland/Services/Clipboard/ClipboardServer.ipc b/Userland/Services/Clipboard/ClipboardServer.ipc
index 8444db2c3256..f5ce4673368c 100644
--- a/Userland/Services/Clipboard/ClipboardServer.ipc
+++ b/Userland/Services/Clipboard/ClipboardServer.ipc
@@ -2,6 +2,6 @@
 
 endpoint ClipboardServer
 {
-    get_clipboard_data() => (Core::AnonymousBuffer data, [UTF8] ByteString mime_type, HashMap<ByteString,ByteString> metadata)
-    set_clipboard_data(Core::AnonymousBuffer data, [UTF8] ByteString mime_type, HashMap<ByteString,ByteString> metadata) =|
+    get_clipboard_data() => (Core::AnonymousBuffer data, [UTF8] ByteString mime_type, HashMap<ByteString, ByteString> metadata)
+    set_clipboard_data(Core::AnonymousBuffer data, [UTF8] ByteString mime_type, HashMap<ByteString, ByteString> metadata) =|
 }
diff --git a/Userland/Services/RequestServer/RequestClient.ipc b/Userland/Services/RequestServer/RequestClient.ipc
index 50ba3e7d3932..2a9b0128bc54 100644
--- a/Userland/Services/RequestServer/RequestClient.ipc
+++ b/Userland/Services/RequestServer/RequestClient.ipc
@@ -5,7 +5,7 @@ endpoint RequestClient
     request_started(i32 request_id, IPC::File fd) =|
     request_progress(i32 request_id, Optional<u64> total_size, u64 downloaded_size) =|
     request_finished(i32 request_id, bool success, u64 total_size) =|
-    headers_became_available(i32 request_id, HashMap<ByteString,ByteString,CaseInsensitiveStringTraits> response_headers, Optional<u32> status_code) =|
+    headers_became_available(i32 request_id, HashMap<ByteString, ByteString, CaseInsensitiveStringTraits> response_headers, Optional<u32> status_code) =|
 
     // Websocket API
     // FIXME: See if this can be merged with the regular APIs
diff --git a/Userland/Services/RequestServer/RequestServer.ipc b/Userland/Services/RequestServer/RequestServer.ipc
index ae0bccc68d3c..5ba06e6f30ca 100644
--- a/Userland/Services/RequestServer/RequestServer.ipc
+++ b/Userland/Services/RequestServer/RequestServer.ipc
@@ -6,14 +6,14 @@ endpoint RequestServer
     // Test if a specific protocol is supported, e.g ""http""
     is_supported_protocol(ByteString protocol) => (bool supported)
 
-    start_request(i32 request_id, ByteString method, URL::URL url, HashMap<ByteString,ByteString> request_headers, ByteBuffer request_body, Core::ProxyData proxy_data) =|
+    start_request(i32 request_id, ByteString method, URL::URL url, HashMap<ByteString, ByteString> request_headers, ByteBuffer request_body, Core::ProxyData proxy_data) =|
     stop_request(i32 request_id) => (bool success)
     set_certificate(i32 request_id, ByteString certificate, ByteString key) => (bool success)
 
     ensure_connection(URL::URL url, ::RequestServer::CacheLevel cache_level) =|
 
     // Websocket Connection API
-    websocket_connect(URL::URL url, ByteString origin, Vector<ByteString> protocols, Vector<ByteString> extensions, HashMap<ByteString,ByteString> additional_request_headers) => (i32 connection_id)
+    websocket_connect(URL::URL url, ByteString origin, Vector<ByteString> protocols, Vector<ByteString> extensions, HashMap<ByteString, ByteString> additional_request_headers) => (i32 connection_id)
     websocket_ready_state(i32 connection_id) => (u32 ready_state)
     websocket_subprotocol_in_use(i32 connection_id) => (ByteString subprotocol_in_use)
     websocket_send(i32 connection_id, bool is_text, ByteBuffer data) =|
diff --git a/Userland/Services/WebContent/WebContentServer.ipc b/Userland/Services/WebContent/WebContentServer.ipc
index 9d1667b2aef5..d7515d965404 100644
--- a/Userland/Services/WebContent/WebContentServer.ipc
+++ b/Userland/Services/WebContent/WebContentServer.ipc
@@ -70,7 +70,7 @@ endpoint WebContentServer
     set_content_filters(u64 page_id, Vector<String> filters) =|
     set_autoplay_allowed_on_all_websites(u64 page_id) =|
     set_autoplay_allowlist(u64 page_id, Vector<String> allowlist) =|
-    set_proxy_mappings(u64 page_id, Vector<ByteString> proxies, HashMap<ByteString,size_t> mappings) =|
+    set_proxy_mappings(u64 page_id, Vector<ByteString> proxies, HashMap<ByteString, size_t> mappings) =|
     set_preferred_color_scheme(u64 page_id, Web::CSS::PreferredColorScheme color_scheme) =|
     set_has_focus(u64 page_id, bool has_focus) =|
     set_is_scripting_enabled(u64 page_id, bool is_scripting_enabled) =|
@@ -79,8 +79,8 @@ endpoint WebContentServer
     set_window_position(u64 page_id, Web::DevicePixelPoint position) =|
     set_window_size(u64 page_id, Web::DevicePixelSize size) =|
 
-    get_local_storage_entries(u64 page_id) => (OrderedHashMap<String,String> entries)
-    get_session_storage_entries(u64 page_id) => (OrderedHashMap<String,String> entries)
+    get_local_storage_entries(u64 page_id) => (OrderedHashMap<String, String> entries)
+    get_session_storage_entries(u64 page_id) => (OrderedHashMap<String, String> entries)
 
     handle_file_return(u64 page_id, i32 error, Optional<IPC::File> file, i32 request_id) =|
 
diff --git a/Userland/Services/WindowServer/WindowClient.ipc b/Userland/Services/WindowServer/WindowClient.ipc
index 237ff2784001..2fa60b095d37 100644
--- a/Userland/Services/WindowServer/WindowClient.ipc
+++ b/Userland/Services/WindowServer/WindowClient.ipc
@@ -36,7 +36,7 @@ endpoint WindowClient
     drag_accepted() =|
     drag_cancelled() =|
 
-    drag_dropped(i32 window_id, Gfx::IntPoint mouse_position, [UTF8] ByteString text, HashMap<String,ByteBuffer> mime_data) =|
+    drag_dropped(i32 window_id, Gfx::IntPoint mouse_position, [UTF8] ByteString text, HashMap<String, ByteBuffer> mime_data) =|
 
     update_system_theme(Core::AnonymousBuffer theme_buffer) =|
     update_system_fonts(ByteString default_font_query, ByteString fixed_width_font_query, ByteString window_title_font_query) =|
diff --git a/Userland/Services/WindowServer/WindowServer.ipc b/Userland/Services/WindowServer/WindowServer.ipc
index d422aaa1c1a3..e0b6dc9a985a 100644
--- a/Userland/Services/WindowServer/WindowServer.ipc
+++ b/Userland/Services/WindowServer/WindowServer.ipc
@@ -130,7 +130,7 @@ endpoint WindowServer
     set_window_cursor(i32 window_id, i32 cursor_type) =|
     set_window_custom_cursor(i32 window_id, Gfx::ShareableBitmap cursor) =|
 
-    start_drag([UTF8] ByteString text, HashMap<String,ByteBuffer> mime_data, Gfx::ShareableBitmap drag_bitmap) => (bool started)
+    start_drag([UTF8] ByteString text, HashMap<String, ByteBuffer> mime_data, Gfx::ShareableBitmap drag_bitmap) => (bool started)
     set_accepts_drag(bool accepts) =|
 
     set_system_theme(ByteString theme_path, [UTF8] ByteString theme_name, bool keep_desktop_background, Optional<ByteString> color_scheme_path) => (bool success)"
ab2574d75f43ac2600a55f9610ec2009e07e4a93,2022-07-03 16:36:44,Linus Groh,libjs: Avoid potential overflow in Array.prototype.toSpliced(),False,Avoid potential overflow in Array.prototype.toSpliced(),libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/ArrayPrototype.cpp b/Userland/Libraries/LibJS/Runtime/ArrayPrototype.cpp
index 1be2d3f56c86..7147115c3bd8 100644
--- a/Userland/Libraries/LibJS/Runtime/ArrayPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ArrayPrototype.cpp
@@ -1924,7 +1924,10 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::to_spliced)
     auto new_length_double = static_cast<double>(length) + static_cast<double>(insert_count) - static_cast<double>(actual_delete_count);
 
     // 12. If newLen > 2^53 - 1, throw a TypeError exception.
-    if (new_length_double > MAX_ARRAY_LIKE_INDEX)
+    // FIXME: ArrayCreate throws for any length > 2^32 - 1, so there's no point in letting
+    //        values up to 2^53 - 1 through (spec issue). This also prevents a potential
+    //        overflow when casting from double to size_t, which is 32 bits on x86.
+    if (new_length_double > NumericLimits<u32>::max())
         return vm.throw_completion<TypeError>(global_object, ErrorType::ArrayMaxSize);
 
     auto new_length = static_cast<size_t>(new_length_double);"
ee8a1a9b3fc8f1b50be7016c59733d4bb288ea9f,2021-09-19 18:32:27,Andreas Kling,libweb: Keep XMLHttpRequest alive while handling load/error events,False,Keep XMLHttpRequest alive while handling load/error events,libweb,"diff --git a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
index 0cc462d59b01..d211d221a8d0 100644
--- a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
+++ b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
@@ -212,7 +212,8 @@ DOM::ExceptionOr<void> XMLHttpRequest::send()
         ResourceLoader::the().load(
             request,
             [weak_this = make_weak_ptr()](auto data, auto& response_headers, auto status_code) {
-                if (!weak_this)
+                auto strong_this = weak_this.strong_ref();
+                if (!strong_this)
                     return;
                 auto& xhr = const_cast<XMLHttpRequest&>(*weak_this);
                 // FIXME: Handle OOM failure.
@@ -235,12 +236,14 @@ DOM::ExceptionOr<void> XMLHttpRequest::send()
                 xhr.fire_progress_event(EventNames::loadend, transmitted, length);
             },
             [weak_this = make_weak_ptr()](auto& error, auto status_code) {
-                if (!weak_this)
-                    return;
                 dbgln(""XHR failed to load: {}"", error);
-                const_cast<XMLHttpRequest&>(*weak_this).set_ready_state(ReadyState::Done);
-                const_cast<XMLHttpRequest&>(*weak_this).set_status(status_code.value_or(0));
-                const_cast<XMLHttpRequest&>(*weak_this).dispatch_event(DOM::Event::create(HTML::EventNames::error));
+                auto strong_this = weak_this.strong_ref();
+                if (!strong_this)
+                    return;
+                auto& xhr = const_cast<XMLHttpRequest&>(*strong_this);
+                xhr.set_ready_state(ReadyState::Done);
+                xhr.set_status(status_code.value_or(0));
+                xhr.dispatch_event(DOM::Event::create(HTML::EventNames::error));
             });
     } else {
         TODO();"
0a21d421d922af6e03c2180e80edf496d0686ff1,2021-07-14 02:38:45,Andreas Kling,kernel: Print a summary of physical zones during boot,False,Print a summary of physical zones during boot,kernel,"diff --git a/Kernel/VM/PhysicalRegion.cpp b/Kernel/VM/PhysicalRegion.cpp
index 6b74058e4cd0..3560186fd88f 100644
--- a/Kernel/VM/PhysicalRegion.cpp
+++ b/Kernel/VM/PhysicalRegion.cpp
@@ -42,17 +42,24 @@ void PhysicalRegion::initialize_zones()
     size_t remaining_pages = m_pages;
     auto base_address = m_lower;
 
-    auto make_zones = [&](size_t zone_size) {
-        while (remaining_pages >= zone_size) {
-            m_zones.append(make<PhysicalZone>(base_address, zone_size));
-            dmesgln("" * Zone {:016x}-{:016x} ({} bytes)"", base_address.get(), base_address.get() + zone_size * PAGE_SIZE - 1, zone_size * PAGE_SIZE);
-            base_address = base_address.offset(zone_size * PAGE_SIZE);
+    auto make_zones = [&](size_t pages_per_zone) {
+        size_t zone_count = 0;
+        auto first_address = base_address;
+        while (remaining_pages >= pages_per_zone) {
+            m_zones.append(make<PhysicalZone>(base_address, pages_per_zone));
+            base_address = base_address.offset(pages_per_zone * PAGE_SIZE);
             m_usable_zones.append(m_zones.last());
-            remaining_pages -= zone_size;
+            remaining_pages -= pages_per_zone;
+            ++zone_count;
         }
+        if (zone_count)
+            dmesgln("" * {}x PhysicalZone ({} MiB) @ {:016x}-{:016x}"", zone_count, pages_per_zone / 256, first_address.get(), base_address.get() - pages_per_zone * PAGE_SIZE - 1);
     };
 
+    // First make 16 MiB zones (with 4096 pages each)
     make_zones(4096);
+
+    // Then divide any remaining space into 1 MiB zones (with 256 pages each)
     make_zones(256);
 }"
2b2e0a4c5a133e60a9416ad18dea49b655d4ea22,2023-06-18 13:17:51,Ben Wiederhake,tests: Use AK_MAKE_DEFAULT_MOVABLE to avoid mistakes in default impls,False,Use AK_MAKE_DEFAULT_MOVABLE to avoid mistakes in default impls,tests,"diff --git a/Tests/AK/TestQuickSort.cpp b/Tests/AK/TestQuickSort.cpp
index fbbd72326e5d..ffb8e93df2f2 100644
--- a/Tests/AK/TestQuickSort.cpp
+++ b/Tests/AK/TestQuickSort.cpp
@@ -14,12 +14,10 @@ TEST_CASE(sorts_without_copy)
 {
     struct NoCopy {
         AK_MAKE_NONCOPYABLE(NoCopy);
+        AK_MAKE_DEFAULT_MOVABLE(NoCopy);
 
     public:
         NoCopy() = default;
-        NoCopy(NoCopy&&) = default;
-
-        NoCopy& operator=(NoCopy&&) = default;
 
         int value { 0 };
     };
diff --git a/Tests/AK/TestTuple.cpp b/Tests/AK/TestTuple.cpp
index 75e445f4be2c..1690f77905fe 100644
--- a/Tests/AK/TestTuple.cpp
+++ b/Tests/AK/TestTuple.cpp
@@ -53,9 +53,9 @@ TEST_CASE(no_copy)
 {
     struct NoCopy {
         AK_MAKE_NONCOPYABLE(NoCopy);
+        AK_MAKE_DEFAULT_MOVABLE(NoCopy);
 
     public:
-        NoCopy(NoCopy&&) = default;
         NoCopy() = default;
     };
 
diff --git a/Tests/AK/TestVariant.cpp b/Tests/AK/TestVariant.cpp
index 88a3e5fb7d40..0c191584e4df 100644
--- a/Tests/AK/TestVariant.cpp
+++ b/Tests/AK/TestVariant.cpp
@@ -96,10 +96,10 @@ TEST_CASE(move_moves)
 {
     struct NoCopy {
         AK_MAKE_NONCOPYABLE(NoCopy);
+        AK_MAKE_DEFAULT_MOVABLE(NoCopy);
 
     public:
         NoCopy() = default;
-        NoCopy(NoCopy&&) = default;
     };
 
     Variant<NoCopy, int> first_variant { 42 };"
45fa3b745445bb82121fb810b6ea6ab6022bcd25,2019-10-15 12:41:00,Danny Feliz,meta: Fix shell syntax highlighting in ReadMe (#661),False,Fix shell syntax highlighting in ReadMe (#661),meta,"diff --git a/ReadMe.md b/ReadMe.md
index f1424d3e8214..bda96fbe61dc 100644
--- a/ReadMe.md
+++ b/ReadMe.md
@@ -63,12 +63,12 @@ There's also a [Patreon](https://www.patreon.com/serenityos) if you would like t
 
 Make sure you have all the dependencies installed:
 
-```
+```bash
 sudo apt install build-essential curl libmpfr-dev libmpc-dev libgmp-dev e2fsprogs qemu-system-i386 qemu-utils
 ```
 
 Ensure your gcc version is >= 8 with `gcc --version`. Otherwise, install it (on Ubuntu) with:
-```
+```bash
 sudo add-apt-repository ppa:ubuntu-toolchain-r/test
 sudo apt-get install gcc-8 g++-8
 sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-8 800 --slave /usr/bin/g++ g++ /usr/bin/g++-8
@@ -96,7 +96,7 @@ Nevertheless, here is a guide on how to [get an Insider Build](https://insider.w
 
 WSL2 does not natively support graphical applications. This means that to actually **./run** SerenityOS, you need an X Server for windows. [Vcxsrv](https://sourceforge.net/projects/vcxsrv/) is a good option. When you start up Vcxsrv, make sure to set the Display number to 0, and to Disable access control. Before actually doing **./run**, you need to set the DISPLAY environmental variable as such:
 
-```
+```bash
 export DISPLAY=$(cat /etc/resolv.conf | grep nameserver | awk '{print $2}'):0
 ```
 This is due to a bug in WSL2. For more information, microsoft/WSL#4106."
70cb4491d7813eb40e2d6317d32a13d701b0c7e2,2020-07-18 21:27:40,Andreas Kling,"ak: Use ""signed char"" as the opposite of ""unsigned char""",False,"Use ""signed char"" as the opposite of ""unsigned char""",ak,"diff --git a/AK/NumericLimits.h b/AK/NumericLimits.h
index 734688ae11b6..f739eedec3bf 100644
--- a/AK/NumericLimits.h
+++ b/AK/NumericLimits.h
@@ -42,9 +42,9 @@ struct NumericLimits<bool> {
 };
 
 template<>
-struct NumericLimits<char> {
-    static constexpr char min() { return -__SCHAR_MAX__ - 1; }
-    static constexpr char max() { return __SCHAR_MAX__; }
+struct NumericLimits<signed char> {
+    static constexpr signed char min() { return -__SCHAR_MAX__ - 1; }
+    static constexpr signed char max() { return __SCHAR_MAX__; }
     static constexpr bool is_signed() { return true; }
 };
 
diff --git a/AK/StdLibExtras.h b/AK/StdLibExtras.h
index d94b6f754aad..27249af8b289 100644
--- a/AK/StdLibExtras.h
+++ b/AK/StdLibExtras.h
@@ -313,7 +313,7 @@ struct MakeUnsigned {
 };
 
 template<>
-struct MakeUnsigned<char> {
+struct MakeUnsigned<signed char> {
     typedef unsigned char type;
 };
 
@@ -367,8 +367,8 @@ struct MakeSigned {
 };
 
 template<>
-struct MakeSigned<char> {
-    typedef char type;
+struct MakeSigned<signed char> {
+    typedef signed char type;
 };
 
 template<>"
239b9d8662b67579665bdb11b890c0dee93716c2,2024-05-11 16:30:46,Andreas Kling,libjs: Manually limit the recursion depth in Proxy,False,Manually limit the recursion depth in Proxy,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/ProxyObject.cpp b/Userland/Libraries/LibJS/Runtime/ProxyObject.cpp
index 80dfe64beb3c..c511d9289cad 100644
--- a/Userland/Libraries/LibJS/Runtime/ProxyObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ProxyObject.cpp
@@ -18,6 +18,24 @@ namespace JS {
 
 JS_DEFINE_ALLOCATOR(ProxyObject);
 
+// NOTE: We can't rely on native stack overflows to catch infinite recursion in Proxy traps,
+//       since the compiler may decide to optimize tail/sibling calls into loops.
+//       So instead we keep track of the recursion depth and throw a TypeError if it exceeds a certain limit.
+
+static int s_recursion_depth = 0;
+
+struct RecursionDepthUpdater {
+    RecursionDepthUpdater() { ++s_recursion_depth; }
+    ~RecursionDepthUpdater() { --s_recursion_depth; }
+};
+
+#define LIMIT_PROXY_RECURSION_DEPTH()                                                      \
+    RecursionDepthUpdater recursion_depth_updater;                                         \
+    do {                                                                                   \
+        if (s_recursion_depth >= 10000)                                                    \
+            return vm().throw_completion<InternalError>(ErrorType::CallStackSizeExceeded); \
+    } while (0)
+
 NonnullGCPtr<ProxyObject> ProxyObject::create(Realm& realm, Object& target, Object& handler)
 {
     return realm.heap().allocate<ProxyObject>(realm, target, handler, realm.intrinsics().object_prototype());
@@ -46,6 +64,8 @@ static Value property_key_to_value(VM& vm, PropertyKey const& property_key)
 // 10.5.1 [[GetPrototypeOf]] ( ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-getprototypeof
 ThrowCompletionOr<Object*> ProxyObject::internal_get_prototype_of() const
 {
+    LIMIT_PROXY_RECURSION_DEPTH();
+
     auto& vm = this->vm();
 
     // 1. Let handler be O.[[ProxyHandler]].
@@ -94,6 +114,8 @@ ThrowCompletionOr<Object*> ProxyObject::internal_get_prototype_of() const
 // 10.5.2 [[SetPrototypeOf]] ( V ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-setprototypeof-v
 ThrowCompletionOr<bool> ProxyObject::internal_set_prototype_of(Object* prototype)
 {
+    LIMIT_PROXY_RECURSION_DEPTH();
+
     auto& vm = this->vm();
 
     // 1. Let handler be O.[[ProxyHandler]].
@@ -142,6 +164,8 @@ ThrowCompletionOr<bool> ProxyObject::internal_set_prototype_of(Object* prototype
 // 10.5.3 [[IsExtensible]] ( ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-isextensible
 ThrowCompletionOr<bool> ProxyObject::internal_is_extensible() const
 {
+    LIMIT_PROXY_RECURSION_DEPTH();
+
     auto& vm = this->vm();
 
     // 1. Let handler be O.[[ProxyHandler]].
@@ -179,6 +203,8 @@ ThrowCompletionOr<bool> ProxyObject::internal_is_extensible() const
 // 10.5.4 [[PreventExtensions]] ( ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-preventextensions
 ThrowCompletionOr<bool> ProxyObject::internal_prevent_extensions()
 {
+    LIMIT_PROXY_RECURSION_DEPTH();
+
     auto& vm = this->vm();
 
     // 1. Let handler be O.[[ProxyHandler]].
@@ -219,6 +245,8 @@ ThrowCompletionOr<bool> ProxyObject::internal_prevent_extensions()
 // 10.5.5 [[GetOwnProperty]] ( P ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-getownproperty-p
 ThrowCompletionOr<Optional<PropertyDescriptor>> ProxyObject::internal_get_own_property(PropertyKey const& property_key) const
 {
+    LIMIT_PROXY_RECURSION_DEPTH();
+
     auto& vm = this->vm();
 
     VERIFY(property_key.is_valid());
@@ -310,6 +338,8 @@ ThrowCompletionOr<Optional<PropertyDescriptor>> ProxyObject::internal_get_own_pr
 // 10.5.6 [[DefineOwnProperty]] ( P, Desc ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-defineownproperty-p-desc
 ThrowCompletionOr<bool> ProxyObject::internal_define_own_property(PropertyKey const& property_key, PropertyDescriptor const& property_descriptor)
 {
+    LIMIT_PROXY_RECURSION_DEPTH();
+
     auto& vm = this->vm();
 
     VERIFY(property_key.is_valid());
@@ -392,6 +422,8 @@ ThrowCompletionOr<bool> ProxyObject::internal_define_own_property(PropertyKey co
 // 10.5.7 [[HasProperty]] ( P ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-hasproperty-p
 ThrowCompletionOr<bool> ProxyObject::internal_has_property(PropertyKey const& property_key) const
 {
+    LIMIT_PROXY_RECURSION_DEPTH();
+
     auto& vm = this->vm();
 
     VERIFY(property_key.is_valid());
@@ -457,6 +489,8 @@ ThrowCompletionOr<bool> ProxyObject::internal_has_property(PropertyKey const& pr
 // 10.5.8 [[Get]] ( P, Receiver ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-get-p-receiver
 ThrowCompletionOr<Value> ProxyObject::internal_get(PropertyKey const& property_key, Value receiver, CacheablePropertyMetadata*, PropertyLookupPhase) const
 {
+    LIMIT_PROXY_RECURSION_DEPTH();
+
     // NOTE: We don't return any cacheable metadata for proxy lookups.
 
     VERIFY(!receiver.is_empty());
@@ -529,6 +563,8 @@ ThrowCompletionOr<Value> ProxyObject::internal_get(PropertyKey const& property_k
 // 10.5.9 [[Set]] ( P, V, Receiver ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-set-p-v-receiver
 ThrowCompletionOr<bool> ProxyObject::internal_set(PropertyKey const& property_key, Value value, Value receiver, CacheablePropertyMetadata*)
 {
+    LIMIT_PROXY_RECURSION_DEPTH();
+
     auto& vm = this->vm();
 
     VERIFY(property_key.is_valid());
@@ -602,6 +638,8 @@ ThrowCompletionOr<bool> ProxyObject::internal_set(PropertyKey const& property_ke
 // 10.5.10 [[Delete]] ( P ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-delete-p
 ThrowCompletionOr<bool> ProxyObject::internal_delete(PropertyKey const& property_key)
 {
+    LIMIT_PROXY_RECURSION_DEPTH();
+
     auto& vm = this->vm();
 
     VERIFY(property_key.is_valid());
@@ -656,6 +694,8 @@ ThrowCompletionOr<bool> ProxyObject::internal_delete(PropertyKey const& property
 // 10.5.11 [[OwnPropertyKeys]] ( ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-ownpropertykeys
 ThrowCompletionOr<MarkedVector<Value>> ProxyObject::internal_own_property_keys() const
 {
+    LIMIT_PROXY_RECURSION_DEPTH();
+
     auto& vm = this->vm();
 
     // 1. Let handler be O.[[ProxyHandler]].
@@ -776,6 +816,8 @@ ThrowCompletionOr<MarkedVector<Value>> ProxyObject::internal_own_property_keys()
 // 10.5.12 [[Call]] ( thisArgument, argumentsList ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-call-thisargument-argumentslist
 ThrowCompletionOr<Value> ProxyObject::internal_call(Value this_argument, ReadonlySpan<Value> arguments_list)
 {
+    LIMIT_PROXY_RECURSION_DEPTH();
+
     auto& vm = this->vm();
     auto& realm = *vm.current_realm();
 
@@ -820,6 +862,8 @@ bool ProxyObject::has_constructor() const
 // 10.5.13 [[Construct]] ( argumentsList, newTarget ), https://tc39.es/ecma262/#sec-proxy-object-internal-methods-and-internal-slots-construct-argumentslist-newtarget
 ThrowCompletionOr<NonnullGCPtr<Object>> ProxyObject::internal_construct(ReadonlySpan<Value> arguments_list, FunctionObject& new_target)
 {
+    LIMIT_PROXY_RECURSION_DEPTH();
+
     auto& vm = this->vm();
     auto& realm = *vm.current_realm();"
2f4e2436e8d708da9854f4cf902d3f9b6af74b4c,2024-05-24 18:17:26,Timothy Flynn,meta: Download files at configure time a bit more atomically,False,Download files at configure time a bit more atomically,meta,"diff --git a/Meta/CMake/utils.cmake b/Meta/CMake/utils.cmake
index 42647ffd7eef..cc224bd36818 100644
--- a/Meta/CMake/utils.cmake
+++ b/Meta/CMake/utils.cmake
@@ -210,20 +210,23 @@ function(download_file_multisource urls path)
         if (NOT ENABLE_NETWORK_DOWNLOADS)
             message(FATAL_ERROR ""${path} does not exist, and unable to download it"")
         endif()
+
         get_filename_component(file ""${path}"" NAME)
+        set(tmp_path ""${path}.tmp"")
 
         foreach(url ${urls})
             message(STATUS ""Downloading file ${file} from ${url}"")
 
-            file(DOWNLOAD ""${url}"" ""${path}"" INACTIVITY_TIMEOUT 10 STATUS download_result ${DOWNLOAD_SHA256})
+            file(DOWNLOAD ""${url}"" ""${tmp_path}"" INACTIVITY_TIMEOUT 10 STATUS download_result ${DOWNLOAD_SHA256})
             list(GET download_result 0 status_code)
             list(GET download_result 1 error_message)
 
             if (status_code EQUAL 0)
+                file(RENAME ""${tmp_path}"" ""${path}"")
                 break()
             endif()
 
-            file(REMOVE ""${path}"")
+            file(REMOVE ""${tmp_path}"")
             message(WARNING ""Failed to download ${url}: ${error_message}"")
         endforeach()"
4e536eaf9854d2d51a2b46439cbef54b4ce86a9c,2022-09-27 19:26:17,Linus Groh,libjs: Add JSON.stringify function to the intrinsics,False,Add JSON.stringify function to the intrinsics,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/Intrinsics.cpp b/Userland/Libraries/LibJS/Runtime/Intrinsics.cpp
index 55db6493a0fc..4b7a64c7ca47 100644
--- a/Userland/Libraries/LibJS/Runtime/Intrinsics.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intrinsics.cpp
@@ -310,6 +310,7 @@ void Intrinsics::initialize_intrinsics(Realm& realm)
     m_array_prototype_values_function = &m_array_prototype->get_without_side_effects(vm.names.values).as_function();
     m_date_constructor_now_function = &m_date_constructor->get_without_side_effects(vm.names.now).as_function();
     m_json_parse_function = &m_json_object->get_without_side_effects(vm.names.parse).as_function();
+    m_json_stringify_function = &m_json_object->get_without_side_effects(vm.names.stringify).as_function();
     m_object_prototype_to_string_function = &m_object_prototype->get_without_side_effects(vm.names.toString).as_function();
 }
 
@@ -327,6 +328,7 @@ void Intrinsics::visit_edges(Visitor& visitor)
     visitor.visit(m_date_constructor_now_function);
     visitor.visit(m_eval_function);
     visitor.visit(m_json_parse_function);
+    visitor.visit(m_json_stringify_function);
     visitor.visit(m_object_prototype_to_string_function);
     visitor.visit(m_throw_type_error_function);
 
diff --git a/Userland/Libraries/LibJS/Runtime/Intrinsics.h b/Userland/Libraries/LibJS/Runtime/Intrinsics.h
index c76c9048e842..215a92fca66b 100644
--- a/Userland/Libraries/LibJS/Runtime/Intrinsics.h
+++ b/Userland/Libraries/LibJS/Runtime/Intrinsics.h
@@ -55,6 +55,7 @@ class Intrinsics final : public Cell {
     FunctionObject* array_prototype_values_function() const { return m_array_prototype_values_function; }
     FunctionObject* date_constructor_now_function() const { return m_date_constructor_now_function; }
     FunctionObject* json_parse_function() const { return m_json_parse_function; }
+    FunctionObject* json_stringify_function() const { return m_json_stringify_function; }
     FunctionObject* object_prototype_to_string_function() const { return m_object_prototype_to_string_function; }
     FunctionObject* throw_type_error_function() const { return m_throw_type_error_function; }
 
@@ -149,6 +150,7 @@ class Intrinsics final : public Cell {
     FunctionObject* m_array_prototype_values_function { nullptr };
     FunctionObject* m_date_constructor_now_function { nullptr };
     FunctionObject* m_json_parse_function { nullptr };
+    FunctionObject* m_json_stringify_function { nullptr };
     FunctionObject* m_object_prototype_to_string_function { nullptr };
     FunctionObject* m_throw_type_error_function { nullptr };"
80a3cc47e51e72af7b0240342c8b7568f39df465,2021-06-09 14:27:51,Brian Gianforcaro,kernel: Mark MMIOAccess detection function as UNMAP_AFTER_INIT,False,Mark MMIOAccess detection function as UNMAP_AFTER_INIT,kernel,"diff --git a/Kernel/PCI/MMIOAccess.cpp b/Kernel/PCI/MMIOAccess.cpp
index f9b2c14b52ef..424218facb0e 100644
--- a/Kernel/PCI/MMIOAccess.cpp
+++ b/Kernel/PCI/MMIOAccess.cpp
@@ -35,7 +35,7 @@ u8 MMIOAccess::segment_end_bus(u32 seg) const
     return segment.value().get_end_bus();
 }
 
-PhysicalAddress MMIOAccess::determine_memory_mapped_bus_region(u32 segment, u8 bus) const
+UNMAP_AFTER_INIT PhysicalAddress MMIOAccess::determine_memory_mapped_bus_region(u32 segment, u8 bus) const
 {
     VERIFY(bus >= segment_start_bus(segment) && bus <= segment_end_bus(segment));
     auto seg = m_segments.get(segment);"
e11ae33c664a3873ca3383ac4582f2ed9ccc5f1e,2021-09-20 20:52:25,Andreas Kling,libweb: Pop entire stack of open elements at the end of parsing,False,Pop entire stack of open elements at the end of parsing,libweb,"diff --git a/Userland/Libraries/LibWeb/HTML/Parser/HTMLDocumentParser.cpp b/Userland/Libraries/LibWeb/HTML/Parser/HTMLDocumentParser.cpp
index dad672ce768e..88e44932572a 100644
--- a/Userland/Libraries/LibWeb/HTML/Parser/HTMLDocumentParser.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Parser/HTMLDocumentParser.cpp
@@ -179,6 +179,10 @@ void HTMLDocumentParser::run(const AK::URL& url)
 
     m_document->set_ready_state(""interactive"");
 
+    // 3. Pop all the nodes off the stack of open elements.
+    while (!m_stack_of_open_elements.is_empty())
+        m_stack_of_open_elements.pop();
+
     auto scripts_to_execute_when_parsing_has_finished = m_document->take_scripts_to_execute_when_parsing_has_finished({});
     for (auto& script : scripts_to_execute_when_parsing_has_finished) {
         // FIXME: Spin the event loop until the script is ready to be parser executed and there's no style sheets blocking scripts."
2a7cf1c588149fbd11ae4f4f77113130b7254347,2024-05-21 22:58:43,Tim Ledbetter,libweb: Implement the `width` and `height` attributes where missing,False,Implement the `width` and `height` attributes where missing,libweb,"diff --git a/Tests/LibWeb/Text/expected/HTML/reflected-integer-attributes.txt b/Tests/LibWeb/Text/expected/HTML/reflected-integer-attributes.txt
index b51ac6099896..a3364920ad95 100644
--- a/Tests/LibWeb/Text/expected/HTML/reflected-integer-attributes.txt
+++ b/Tests/LibWeb/Text/expected/HTML/reflected-integer-attributes.txt
@@ -16,3 +16,15 @@ object.hspace after setting to 2147483648: 0
 object.vspace after setting to -1: 0
 object.vspace after setting to 20: 20
 object.vspace after setting to 2147483648: 0
+source.width after setting to -1: 0
+source.width after setting to 20: 20
+source.width after setting to 2147483648: 0
+source.height after setting to -1: 0
+source.height after setting to 20: 20
+source.height after setting to 2147483648: 0
+video.width after setting to -1: 0
+video.width after setting to 20: 20
+video.width after setting to 2147483648: 0
+video.height after setting to -1: 0
+video.height after setting to 20: 20
+video.height after setting to 2147483648: 0
diff --git a/Tests/LibWeb/Text/input/HTML/reflected-integer-attributes.html b/Tests/LibWeb/Text/input/HTML/reflected-integer-attributes.html
index e894b0bebc26..c58b3cac9eb3 100644
--- a/Tests/LibWeb/Text/input/HTML/reflected-integer-attributes.html
+++ b/Tests/LibWeb/Text/input/HTML/reflected-integer-attributes.html
@@ -19,5 +19,11 @@
                 testIntegerReflectedProperty(tagName, property);
             }
         }
+
+        for (const tagName of [""source"", ""video""]) {
+            for (const property of [""width"", ""height""]) {
+                testIntegerReflectedProperty(tagName, property);
+            }
+        }
     });
 </script>
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLSourceElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLSourceElement.idl
index 19116eab5856..4379af016cc3 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLSourceElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLSourceElement.idl
@@ -11,7 +11,7 @@ interface HTMLSourceElement : HTMLElement {
     [CEReactions, Reflect] attribute DOMString srcset;
     [CEReactions, Reflect] attribute DOMString sizes;
     [CEReactions, Reflect] attribute DOMString media;
-    [FIXME, CEReactions, Reflect] attribute unsigned long width;
-    [FIXME, CEReactions, Reflect] attribute unsigned long height;
+    [CEReactions, Reflect] attribute unsigned long width;
+    [CEReactions, Reflect] attribute unsigned long height;
 
 };
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLVideoElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLVideoElement.idl
index 3c8c99659dca..f19d18eb10b7 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLVideoElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLVideoElement.idl
@@ -6,8 +6,8 @@ interface HTMLVideoElement : HTMLMediaElement {
 
     [HTMLConstructor] constructor();
 
-    [FIXME, CEReactions] attribute unsigned long width;
-    [FIXME, CEReactions] attribute unsigned long height;
+    [CEReactions, Reflect] attribute unsigned long width;
+    [CEReactions, Reflect] attribute unsigned long height;
     readonly attribute unsigned long videoWidth;
     readonly attribute unsigned long videoHeight;
     [CEReactions, Reflect] attribute USVString poster;"
c75dda8f8bc58ab617cdcd7e4f4a1357962d3850,2024-11-22 19:28:36,Psychpsyo,libweb: Stop radio buttons firing change events when losing focus,False,Stop radio buttons firing change events when losing focus,libweb,"diff --git a/Libraries/LibWeb/HTML/HTMLInputElement.cpp b/Libraries/LibWeb/HTML/HTMLInputElement.cpp
index 7ea12b8d7c4d..0b6ef85e02a4 100644
--- a/Libraries/LibWeb/HTML/HTMLInputElement.cpp
+++ b/Libraries/LibWeb/HTML/HTMLInputElement.cpp
@@ -638,6 +638,7 @@ void HTMLInputElement::commit_pending_changes()
     case TypeAttributeState::Text:
     case TypeAttributeState::URL:
     case TypeAttributeState::Checkbox:
+    case TypeAttributeState::RadioButton:
         if (!m_has_uncommitted_changes)
             return;
         break;
diff --git a/Tests/LibWeb/Text/expected/radio-button-focus-lost-no-change-event.txt b/Tests/LibWeb/Text/expected/radio-button-focus-lost-no-change-event.txt
new file mode 100644
index 000000000000..5a854a88dc7e
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/radio-button-focus-lost-no-change-event.txt
@@ -0,0 +1 @@
+PASS: Change event was not fired
diff --git a/Tests/LibWeb/Text/input/radio-button-focus-lost-no-change-event.html b/Tests/LibWeb/Text/input/radio-button-focus-lost-no-change-event.html
new file mode 100644
index 000000000000..5a38b7a1cf7c
--- /dev/null
+++ b/Tests/LibWeb/Text/input/radio-button-focus-lost-no-change-event.html
@@ -0,0 +1,23 @@
+<!DOCTYPE html>
+<input type=""radio"" id=""radioButton"">
+<script src=""include.js""></script>
+<script>
+    let changeEventFired = false;
+    radioButton.addEventListener(""change"", () => {
+      changeEventFired = true;
+    });
+    asyncTest(async done => {
+        radioButton.focus();
+        await new Promise(resolve => setTimeout(resolve, 0));
+        radioButton.blur();
+        await new Promise(resolve => setTimeout(resolve, 0));
+
+        if (changeEventFired) {
+            println(""FAIL: Change event was fired when it shouldn't have been."");
+        } else {
+            println(""PASS: Change event was not fired"");
+        }
+
+        done();
+    });
+</script>"
9d60f23abc3709259bfe8466f0d7a536a406d8cd,2023-08-14 02:33:53,Shannon Booth,ak: Port URL::m_fragment from DeprecatedString to String,False,Port URL::m_fragment from DeprecatedString to String,ak,"diff --git a/AK/URL.cpp b/AK/URL.cpp
index d50be060deee..8a5ee6224160 100644
--- a/AK/URL.cpp
+++ b/AK/URL.cpp
@@ -62,11 +62,6 @@ DeprecatedString URL::basename() const
     return percent_decode(last_segment);
 }
 
-DeprecatedString URL::fragment() const
-{
-    return m_fragment;
-}
-
 // NOTE: This only exists for compatibility with the existing URL tests which check for both .is_null() and .is_empty().
 static DeprecatedString deprecated_string_percent_encode(DeprecatedString const& input, URL::PercentEncodeSet set = URL::PercentEncodeSet::Userinfo, URL::SpaceAsPlus space_as_plus = URL::SpaceAsPlus::No)
 {
@@ -135,11 +130,6 @@ void URL::append_path(StringView path)
     m_paths.append(deprecated_string_percent_encode(path, PercentEncodeSet::Path));
 }
 
-void URL::set_fragment(StringView fragment)
-{
-    m_fragment = fragment;
-}
-
 // https://url.spec.whatwg.org/#cannot-have-a-username-password-port
 bool URL::cannot_have_a_username_or_password_or_port() const
 {
@@ -215,7 +205,8 @@ URL URL::create_with_file_scheme(DeprecatedString const& path, DeprecatedString
     url.set_paths(lexical_path.parts());
     if (path.ends_with('/'))
         url.append_slash();
-    url.set_fragment(fragment);
+    if (!fragment.is_null())
+        url.set_fragment(String::from_deprecated_string(fragment).release_value_but_fixme_should_propagate_errors());
     return url;
 }
 
@@ -232,7 +223,8 @@ URL URL::create_with_help_scheme(DeprecatedString const& path, DeprecatedString
     url.set_paths(lexical_path.parts());
     if (path.ends_with('/'))
         url.append_slash();
-    url.set_fragment(fragment);
+    if (!fragment.is_null())
+        url.set_fragment(String::from_deprecated_string(fragment).release_value_but_fixme_should_propagate_errors());
     return url;
 }
 
@@ -337,9 +329,9 @@ DeprecatedString URL::serialize(ExcludeFragment exclude_fragment) const
     }
 
     // 6. If exclude fragment is false and url’s fragment is non-null, then append U+0023 (#), followed by url’s fragment, to output.
-    if (exclude_fragment == ExcludeFragment::No && !m_fragment.is_null()) {
+    if (exclude_fragment == ExcludeFragment::No && m_fragment.has_value()) {
         output.append('#');
-        output.append(m_fragment);
+        output.append(*m_fragment);
     }
 
     // 7. Return output.
@@ -381,9 +373,9 @@ DeprecatedString URL::serialize_for_display() const
         builder.append(*m_query);
     }
 
-    if (!m_fragment.is_null()) {
+    if (m_fragment.has_value()) {
         builder.append('#');
-        builder.append(m_fragment);
+        builder.append(*m_fragment);
     }
 
     return builder.to_deprecated_string();
diff --git a/AK/URL.h b/AK/URL.h
index 97280c70f47c..a6b65a75edef 100644
--- a/AK/URL.h
+++ b/AK/URL.h
@@ -83,7 +83,7 @@ class URL {
     ErrorOr<String> serialized_host() const;
     DeprecatedString basename() const;
     Optional<String> const& query() const { return m_query; }
-    DeprecatedString fragment() const;
+    Optional<String> const& fragment() const { return m_fragment; }
     Optional<u16> port() const { return m_port; }
     DeprecatedString path_segment_at_index(size_t index) const;
     size_t path_segment_count() const { return m_paths.size(); }
@@ -102,7 +102,7 @@ class URL {
     void set_port(Optional<u16>);
     void set_paths(Vector<DeprecatedString> const&);
     void set_query(Optional<String> query) { m_query = move(query); }
-    void set_fragment(StringView fragment);
+    void set_fragment(Optional<String> fragment) { m_fragment = move(fragment); }
     void set_cannot_be_a_base_url(bool value) { m_cannot_be_a_base_url = value; }
     void append_path(StringView);
     void append_slash()
@@ -183,7 +183,7 @@ class URL {
     Optional<String> m_query;
 
     // A URL’s fragment is either null or an ASCII string that can be used for further processing on the resource the URL’s other components identify. It is initially null.
-    DeprecatedString m_fragment;
+    Optional<String> m_fragment;
 
     bool m_cannot_be_a_base_url { false };
 };
diff --git a/AK/URLParser.cpp b/AK/URLParser.cpp
index dab9c2924325..64ad47c4bf01 100644
--- a/AK/URLParser.cpp
+++ b/AK/URLParser.cpp
@@ -924,7 +924,7 @@ URL URLParser::basic_parse(StringView raw_input, Optional<URL> const& base_url,
                 url->m_scheme = base_url->m_scheme;
                 url->m_paths = base_url->m_paths;
                 url->m_query = base_url->m_query;
-                url->m_fragment = """";
+                url->m_fragment = String {};
                 url->m_cannot_be_a_base_url = true;
                 state = State::Fragment;
             }
@@ -999,7 +999,7 @@ URL URLParser::basic_parse(StringView raw_input, Optional<URL> const& base_url,
                 }
                 // 3. Otherwise, if c is U+0023 (#), set url’s fragment to the empty string and state to fragment state.
                 else if (code_point == '#') {
-                    url->m_fragment = """";
+                    url->m_fragment = String {};
                     state = State::Fragment;
                 }
                 // 4. Otherwise, if c is not the EOF code point:
@@ -1309,7 +1309,7 @@ URL URLParser::basic_parse(StringView raw_input, Optional<URL> const& base_url,
                 }
                 // 3. Otherwise, if c is U+0023 (#), set url’s fragment to the empty string and state to fragment state.
                 else if (code_point == '#') {
-                    url->m_fragment = """";
+                    url->m_fragment = String {};
                     state = State::Fragment;
                 }
                 // 4. Otherwise, if c is not the EOF code point:
@@ -1450,7 +1450,7 @@ URL URLParser::basic_parse(StringView raw_input, Optional<URL> const& base_url,
             }
             // 3. Otherwise, if state override is not given and c is U+0023 (#), set url’s fragment to the empty string and state to fragment state.
             else if (!state_override.has_value() && code_point == '#') {
-                url->m_fragment = """";
+                url->m_fragment = String {};
                 state = State::Fragment;
             }
             // 4. Otherwise, if c is not the EOF code point:
@@ -1519,7 +1519,7 @@ URL URLParser::basic_parse(StringView raw_input, Optional<URL> const& base_url,
                 }
                 // 7. If c is U+0023 (#), then set url’s fragment to the empty string and state to fragment state.
                 else if (code_point == '#') {
-                    url->m_fragment = """";
+                    url->m_fragment = String {};
                     state = State::Fragment;
                 }
             }
@@ -1551,7 +1551,7 @@ URL URLParser::basic_parse(StringView raw_input, Optional<URL> const& base_url,
             else if (code_point == '#') {
                 // NOTE: This needs to be percent decoded since the member variables contain decoded data.
                 url->m_paths[0] = buffer.string_view();
-                url->m_fragment = """";
+                url->m_fragment = String {};
                 buffer.clear();
                 state = State::Fragment;
             }
@@ -1597,7 +1597,7 @@ URL URLParser::basic_parse(StringView raw_input, Optional<URL> const& base_url,
 
                 // 4. If c is U+0023 (#), then set url’s fragment to the empty string and state to fragment state.
                 if (code_point == '#') {
-                    url->m_fragment = """";
+                    url->m_fragment = String {};
                     state = State::Fragment;
                 }
             }
@@ -1627,7 +1627,7 @@ URL URLParser::basic_parse(StringView raw_input, Optional<URL> const& base_url,
                 // FIXME: 3. UTF-8 percent-encode c using the fragment percent-encode set and append the result to url’s fragment.
                 buffer.append_code_point(code_point);
             } else {
-                url->m_fragment = buffer.string_view();
+                url->m_fragment = buffer.to_string().release_value_but_fixme_should_propagate_errors();
                 buffer.clear();
             }
             break;
diff --git a/Tests/AK/TestURL.cpp b/Tests/AK/TestURL.cpp
index 4c327d588475..7ea6be99615d 100644
--- a/Tests/AK/TestURL.cpp
+++ b/Tests/AK/TestURL.cpp
@@ -25,7 +25,7 @@ TEST_CASE(basic)
         EXPECT_EQ(url.port_or_default(), 80);
         EXPECT_EQ(url.serialize_path(), ""/"");
         EXPECT(!url.query().has_value());
-        EXPECT(url.fragment().is_null());
+        EXPECT(!url.fragment().has_value());
     }
     {
         URL url(""https://www.serenityos.org/index.html""sv);
@@ -35,7 +35,7 @@ TEST_CASE(basic)
         EXPECT_EQ(url.port_or_default(), 443);
         EXPECT_EQ(url.serialize_path(), ""/index.html"");
         EXPECT(!url.query().has_value());
-        EXPECT(url.fragment().is_null());
+        EXPECT(!url.fragment().has_value());
     }
     {
         URL url(""https://www.serenityos.org1/index.html""sv);
@@ -45,7 +45,7 @@ TEST_CASE(basic)
         EXPECT_EQ(url.port_or_default(), 443);
         EXPECT_EQ(url.serialize_path(), ""/index.html"");
         EXPECT(!url.query().has_value());
-        EXPECT(url.fragment().is_null());
+        EXPECT(!url.fragment().has_value());
     }
     {
         URL url(""https://localhost:1234/~anon/test/page.html""sv);
@@ -55,7 +55,7 @@ TEST_CASE(basic)
         EXPECT_EQ(url.port_or_default(), 1234);
         EXPECT_EQ(url.serialize_path(), ""/~anon/test/page.html"");
         EXPECT(!url.query().has_value());
-        EXPECT(url.fragment().is_null());
+        EXPECT(!url.fragment().has_value());
     }
     {
         URL url(""http://www.serenityos.org/index.html?#""sv);
@@ -75,7 +75,7 @@ TEST_CASE(basic)
         EXPECT_EQ(url.port_or_default(), 80);
         EXPECT_EQ(url.serialize_path(), ""/index.html"");
         EXPECT_EQ(url.query(), ""foo=1&bar=2"");
-        EXPECT(url.fragment().is_null());
+        EXPECT(!url.fragment().has_value());
     }
     {
         URL url(""http://www.serenityos.org/index.html#fragment""sv);
@@ -131,7 +131,7 @@ TEST_CASE(file_url_with_hostname)
     EXPECT_EQ(url.serialize_path(), ""/my/file"");
     EXPECT_EQ(url.serialize(), ""file://courage/my/file"");
     EXPECT(!url.query().has_value());
-    EXPECT(url.fragment().is_null());
+    EXPECT(!url.fragment().has_value());
 }
 
 TEST_CASE(file_url_with_localhost)
@@ -161,7 +161,7 @@ TEST_CASE(file_url_with_encoded_characters)
     EXPECT_EQ(url.scheme(), ""file"");
     EXPECT_EQ(url.serialize_path(), ""/my/file/test#file.txt"");
     EXPECT(!url.query().has_value());
-    EXPECT(url.fragment().is_null());
+    EXPECT(!url.fragment().has_value());
 }
 
 TEST_CASE(file_url_with_fragment)
@@ -206,7 +206,7 @@ TEST_CASE(about_url)
     EXPECT(url.host().has<Empty>());
     EXPECT_EQ(url.serialize_path(), ""blank"");
     EXPECT(!url.query().has_value());
-    EXPECT(url.fragment().is_null());
+    EXPECT(!url.fragment().has_value());
     EXPECT_EQ(url.serialize(), ""about:blank"");
 }
 
@@ -220,7 +220,7 @@ TEST_CASE(mailto_url)
     EXPECT_EQ(url.path_segment_count(), 1u);
     EXPECT_EQ(url.path_segment_at_index(0), ""mail@example.com"");
     EXPECT(!url.query().has_value());
-    EXPECT(url.fragment().is_null());
+    EXPECT(!url.fragment().has_value());
     EXPECT_EQ(url.serialize(), ""mailto:mail@example.com"");
 }
 
@@ -234,7 +234,7 @@ TEST_CASE(mailto_url_with_subject)
     EXPECT_EQ(url.path_segment_count(), 1u);
     EXPECT_EQ(url.path_segment_at_index(0), ""mail@example.com"");
     EXPECT_EQ(url.query(), ""subject=test"");
-    EXPECT(url.fragment().is_null());
+    EXPECT(!url.fragment().has_value());
     EXPECT_EQ(url.serialize(), ""mailto:mail@example.com?subject=test"");
 }
 
@@ -380,7 +380,7 @@ TEST_CASE(create_with_file_scheme)
     EXPECT_EQ(url.path_segment_at_index(2), ""README.md"");
     EXPECT_EQ(url.serialize_path(), ""/home/anon/README.md"");
     EXPECT(!url.query().has_value());
-    EXPECT(url.fragment().is_null());
+    EXPECT(!url.fragment().has_value());
 
     url = URL::create_with_file_scheme(""/home/anon/"");
     EXPECT(url.is_valid());
@@ -435,7 +435,7 @@ TEST_CASE(unicode)
     EXPECT(url.is_valid());
     EXPECT_EQ(url.serialize_path(), ""/_ünicöde_téxt_©"");
     EXPECT(!url.query().has_value());
-    EXPECT(url.fragment().is_null());
+    EXPECT(!url.fragment().has_value());
 }
 
 TEST_CASE(complete_file_url_with_base)
diff --git a/Userland/Applications/Spreadsheet/HelpWindow.cpp b/Userland/Applications/Spreadsheet/HelpWindow.cpp
index 078b72ad8c29..8aa10db9e740 100644
--- a/Userland/Applications/Spreadsheet/HelpWindow.cpp
+++ b/Userland/Applications/Spreadsheet/HelpWindow.cpp
@@ -93,7 +93,7 @@ HelpWindow::HelpWindow(GUI::Window* parent)
                 return;
             }
             auto& doc = doc_option.value();
-            auto name = url.fragment();
+            auto name = url.fragment().value_or(String {});
 
             auto maybe_example_data = doc.get_object(""example_data""sv);
             if (!maybe_example_data.has_value()) {
diff --git a/Userland/Applications/Spreadsheet/Spreadsheet.cpp b/Userland/Applications/Spreadsheet/Spreadsheet.cpp
index 1e94d97c2f0f..cb36d8935177 100644
--- a/Userland/Applications/Spreadsheet/Spreadsheet.cpp
+++ b/Userland/Applications/Spreadsheet/Spreadsheet.cpp
@@ -271,7 +271,7 @@ Optional<Position> Sheet::position_from_url(const URL& url) const
     // FIXME: Figure out a way to do this cross-process.
     VERIFY(url.serialize_path() == DeprecatedString::formatted(""/{}"", getpid()));
 
-    return parse_cell_name(url.fragment());
+    return parse_cell_name(url.fragment().value_or(String {}));
 }
 
 Position Sheet::offset_relative_to(Position const& base, Position const& offset, Position const& offset_base) const
@@ -757,7 +757,7 @@ URL Position::to_url(Sheet const& sheet) const
     url.set_scheme(""spreadsheet""_string);
     url.set_host(""cell""_string);
     url.set_paths({ DeprecatedString::number(getpid()) });
-    url.set_fragment(to_cell_identifier(sheet));
+    url.set_fragment(String::from_deprecated_string(to_cell_identifier(sheet)).release_value());
     return url;
 }
 
diff --git a/Userland/Libraries/LibWeb/DOM/Document.cpp b/Userland/Libraries/LibWeb/DOM/Document.cpp
index e4d493fa124e..2b1cfba1139d 100644
--- a/Userland/Libraries/LibWeb/DOM/Document.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Document.cpp
@@ -1737,14 +1737,16 @@ Document::IndicatedPart Document::determine_the_indicated_part() const
     // For an HTML document document, the following processing model must be followed to determine its indicated part:
 
     // 1. Let fragment be document's URL's fragment.
-    auto fragment = url().fragment();
+    VERIFY(url().fragment().has_value());
+
+    auto fragment = url().fragment().value();
 
     // 2. If fragment is the empty string, then return the special value top of the document.
     if (fragment.is_empty())
         return Document::TopOfTheDocument {};
 
     // 3. Let potentialIndicatedElement be the result of finding a potential indicated element given document and fragment.
-    auto potential_indicated_element = find_a_potential_indicated_element(fragment);
+    auto* potential_indicated_element = find_a_potential_indicated_element(fragment.to_deprecated_string());
 
     // 4. If potentialIndicatedElement is not null, then return potentialIndicatedElement.
     if (potential_indicated_element)
diff --git a/Userland/Libraries/LibWeb/Fetch/Fetching/Fetching.cpp b/Userland/Libraries/LibWeb/Fetch/Fetching/Fetching.cpp
index 7afb5cd82bfa..bfdd783d6232 100644
--- a/Userland/Libraries/LibWeb/Fetch/Fetching/Fetching.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/Fetching/Fetching.cpp
@@ -1077,9 +1077,7 @@ WebIDL::ExceptionOr<Optional<JS::NonnullGCPtr<PendingResponse>>> http_redirect_f
         : static_cast<Infrastructure::FilteredResponse const&>(response).internal_response();
 
     // 3. Let locationURL be actualResponse’s location URL given request’s current URL’s fragment.
-    auto const& fragment = request->current_url().fragment();
-    auto fragment_string = fragment.is_null() ? Optional<String> {} : TRY_OR_THROW_OOM(vm, String::from_deprecated_string(fragment));
-    auto location_url_or_error = actual_response->location_url(fragment_string);
+    auto location_url_or_error = actual_response->location_url(request->current_url().fragment());
 
     // 4. If locationURL is null, then return response.
     if (!location_url_or_error.is_error() && !location_url_or_error.value().has_value())
diff --git a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.cpp b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.cpp
index 18ef9bf8a775..fa08e85c3fc9 100644
--- a/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/Infrastructure/HTTP/Responses.cpp
@@ -118,8 +118,8 @@ ErrorOr<Optional<AK::URL>> Response::location_url(Optional<String> const& reques
         return Error::from_string_view(""Invalid 'Location' header URL""sv);
 
     // 4. If location is a URL whose fragment is null, then set location’s fragment to requestFragment.
-    if (location.fragment().is_null())
-        location.set_fragment(request_fragment.has_value() ? request_fragment->to_deprecated_string() : DeprecatedString {});
+    if (!location.fragment().has_value())
+        location.set_fragment(request_fragment);
 
     // 5. Return location.
     return location;
diff --git a/Userland/Libraries/LibWeb/HTML/BrowsingContext.cpp b/Userland/Libraries/LibWeb/HTML/BrowsingContext.cpp
index 27fc4ed910ad..f7ba33c166f4 100644
--- a/Userland/Libraries/LibWeb/HTML/BrowsingContext.cpp
+++ b/Userland/Libraries/LibWeb/HTML/BrowsingContext.cpp
@@ -1167,7 +1167,7 @@ WebIDL::ExceptionOr<void> BrowsingContext::navigate(
     //    and resource's URL's fragment is non-null, then:
     if (history_handling != HistoryHandlingBehavior::Reload
         && resource->url().equals(active_document()->url(), AK::URL::ExcludeFragment::Yes)
-        && !resource->url().fragment().is_null()) {
+        && resource->url().fragment().has_value()) {
         // 1. Navigate to a fragment given browsingContext, resource's URL, historyHandling, and navigationId.
         TRY(navigate_to_a_fragment(resource->url(), history_handling, *navigation_id));
 
@@ -1406,7 +1406,7 @@ WebIDL::ExceptionOr<void> BrowsingContext::traverse_the_history(size_t entry_ind
     }
 
     // 10. If entry's persisted user state is null, and its URL's fragment is non-null, then scroll to the fragment.
-    if (!entry->url.fragment().is_null())
+    if (entry->url.fragment().has_value())
         active_document()->scroll_to_the_fragment();
 
     // 11. Set the current entry to entry.
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLHyperlinkElementUtils.cpp b/Userland/Libraries/LibWeb/HTML/HTMLHyperlinkElementUtils.cpp
index af73e916c6f1..10a95c6df0ec 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLHyperlinkElementUtils.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLHyperlinkElementUtils.cpp
@@ -378,11 +378,11 @@ DeprecatedString HTMLHyperlinkElementUtils::hash() const
     // 2. Let url be this element's url.
 
     // 3. If url is null, or url's fragment is either null or the empty string, return the empty string.
-    if (!m_url.has_value() || m_url->fragment().is_null() || m_url->fragment().is_empty())
+    if (!m_url.has_value() || !m_url->fragment().has_value() || m_url->fragment()->is_empty())
         return DeprecatedString::empty();
 
     // 4. Return ""#"", followed by url's fragment.
-    return DeprecatedString::formatted(""#{}"", m_url->fragment());
+    return DeprecatedString::formatted(""#{}"", *m_url->fragment());
 }
 
 void HTMLHyperlinkElementUtils::set_hash(DeprecatedString hash)
@@ -406,7 +406,7 @@ void HTMLHyperlinkElementUtils::set_hash(DeprecatedString hash)
 
         //    2. Set url's fragment to the empty string.
         auto url_copy = m_url; // We copy the URL here to follow other browser's behavior of reverting the hash change if the parse failed.
-        url_copy->set_fragment(DeprecatedString::empty());
+        url_copy->set_fragment(String {});
 
         //    3. Basic URL parse input, with url as url and fragment state as state override.
         auto result_url = URLParser::basic_parse(input, {}, move(url_copy), URLParser::State::Fragment);
diff --git a/Userland/Libraries/LibWeb/HTML/Location.cpp b/Userland/Libraries/LibWeb/HTML/Location.cpp
index 278159a5c0a8..3f0cec884335 100644
--- a/Userland/Libraries/LibWeb/HTML/Location.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Location.cpp
@@ -279,11 +279,11 @@ WebIDL::ExceptionOr<String> Location::hash() const
     auto url = this->url();
 
     // 2. If this's url's fragment is either null or the empty string, return the empty string.
-    if (url.fragment().is_empty())
+    if (!url.fragment().has_value() || url.fragment()->is_empty())
         return String {};
 
     // 3. Return ""#"", followed by this's url's fragment.
-    return TRY_OR_THROW_OOM(vm, String::formatted(""#{}"", url.fragment()));
+    return TRY_OR_THROW_OOM(vm, String::formatted(""#{}"", *url.fragment()));
 }
 
 // https://html.spec.whatwg.org/multipage/nav-history-apis.html#dom-location-hash
@@ -307,7 +307,7 @@ WebIDL::ExceptionOr<void> Location::set_hash(String const& value)
     auto input = value.bytes_as_string_view().trim(""#""sv, TrimMode::Left);
 
     // 5. Set copyURL's fragment to the empty string.
-    copy_url.set_fragment(""""sv);
+    copy_url.set_fragment(String {});
 
     // 6. Basic URL parse input, with copyURL as url and fragment state as state override.
     auto result_url = URLParser::basic_parse(input, {}, copy_url, URLParser::State::Fragment);
diff --git a/Userland/Libraries/LibWeb/HTML/Navigable.cpp b/Userland/Libraries/LibWeb/HTML/Navigable.cpp
index 705fc9f91f00..dc4366a4cdf4 100644
--- a/Userland/Libraries/LibWeb/HTML/Navigable.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Navigable.cpp
@@ -543,9 +543,7 @@ static WebIDL::ExceptionOr<Optional<NavigationParams>> create_navigation_params_
         response_origin = determine_the_origin(*response->url(), final_sandbox_flags, entry->document_state->initiator_origin(), {});
 
         // 14. Set locationURL to response's location URL given currentURL's fragment.
-        auto const& fragment = current_url.fragment();
-        auto fragment_string = fragment.is_null() ? Optional<String> {} : TRY_OR_THROW_OOM(vm, String::from_deprecated_string(fragment));
-        auto location_url = response->location_url(fragment_string);
+        auto location_url = response->location_url(current_url.fragment());
 
         VERIFY(!location_url.is_error());
 
@@ -844,7 +842,7 @@ WebIDL::ExceptionOr<void> Navigable::navigate(
     if (document_resource.has<Empty>()
         && !response
         && url.equals(active_session_history_entry()->url, AK::URL::ExcludeFragment::Yes)
-        && !url.fragment().is_null()) {
+        && url.fragment().has_value()) {
         // 1. Navigate to a fragment given navigable, url, historyHandling, and navigationId.
         TRY(navigate_to_a_fragment(url, history_handling, navigation_id));
 
diff --git a/Userland/Libraries/LibWeb/HTML/WorkerLocation.cpp b/Userland/Libraries/LibWeb/HTML/WorkerLocation.cpp
index a9a6a7464636..c80ee7bddb64 100644
--- a/Userland/Libraries/LibWeb/HTML/WorkerLocation.cpp
+++ b/Userland/Libraries/LibWeb/HTML/WorkerLocation.cpp
@@ -123,11 +123,11 @@ WebIDL::ExceptionOr<String> WorkerLocation::hash() const
     auto const& fragment = m_global_scope->url().fragment();
 
     // 2. If fragment is either null or the empty string, return the empty string.
-    if (fragment.is_empty())
+    if (!fragment.has_value() || fragment->is_empty())
         return String {};
 
     // 3. Return ""#"", followed by fragment.
-    return TRY_OR_THROW_OOM(vm, String::formatted(""#{}"", fragment.view()));
+    return TRY_OR_THROW_OOM(vm, String::formatted(""#{}"", *fragment));
 }
 
 WorkerLocation::WorkerLocation(WorkerGlobalScope& global_scope)
diff --git a/Userland/Libraries/LibWeb/Loader/FrameLoader.cpp b/Userland/Libraries/LibWeb/Loader/FrameLoader.cpp
index 34cfad35c2e6..9c5a1de94c7c 100644
--- a/Userland/Libraries/LibWeb/Loader/FrameLoader.cpp
+++ b/Userland/Libraries/LibWeb/Loader/FrameLoader.cpp
@@ -302,8 +302,8 @@ void FrameLoader::resource_did_load()
         return;
     }
 
-    if (!url.fragment().is_empty())
-        browsing_context().scroll_to_anchor(url.fragment());
+    if (url.fragment().has_value() && !url.fragment()->is_empty())
+        browsing_context().scroll_to_anchor(url.fragment()->to_deprecated_string());
     else
         browsing_context().scroll_to({ 0, 0 });
 
diff --git a/Userland/Libraries/LibWeb/Page/EventHandler.cpp b/Userland/Libraries/LibWeb/Page/EventHandler.cpp
index 7d712364e0c5..4cde47e04e02 100644
--- a/Userland/Libraries/LibWeb/Page/EventHandler.cpp
+++ b/Userland/Libraries/LibWeb/Page/EventHandler.cpp
@@ -284,8 +284,8 @@ bool EventHandler::handle_mouseup(CSSPixelPoint position, unsigned button, unsig
                     if (button == GUI::MouseButton::Primary) {
                         if (href.starts_with(""javascript:""sv)) {
                             document->navigate_to_javascript_url(href);
-                        } else if (!url.fragment().is_null() && url.equals(document->url(), AK::URL::ExcludeFragment::Yes)) {
-                            m_browsing_context->scroll_to_anchor(url.fragment());
+                        } else if (url.fragment().has_value() && url.equals(document->url(), AK::URL::ExcludeFragment::Yes)) {
+                            m_browsing_context->scroll_to_anchor(url.fragment()->to_deprecated_string());
                         } else {
                             if (m_browsing_context->is_top_level()) {
                                 if (auto* page = m_browsing_context->page())
diff --git a/Userland/Libraries/LibWeb/SVG/SVGGradientElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGGradientElement.cpp
index efe984627e10..6e403c406985 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGGradientElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGGradientElement.cpp
@@ -87,9 +87,9 @@ JS::GCPtr<SVGGradientElement const> SVGGradientElement::linked_gradient() const
     if (auto href = link; !href.is_empty()) {
         auto url = document().parse_url(href);
         auto id = url.fragment();
-        if (id.is_empty())
+        if (!id.has_value() || id->is_empty())
             return {};
-        auto element = document().get_element_by_id(id);
+        auto element = document().get_element_by_id(id->to_deprecated_string());
         if (!element)
             return {};
         if (!is<SVGGradientElement>(*element))
diff --git a/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp
index 6c565f365803..5bd34d3aebdc 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp
@@ -46,8 +46,10 @@ Optional<Gfx::PaintStyle const&> SVGGraphicsElement::svg_paint_computed_value_to
     // FIXME: This entire function is an ad-hoc hack:
     if (!paint_value.has_value() || !paint_value->is_url())
         return {};
-    auto& url = paint_value->as_url();
-    auto gradient = document().get_element_by_id(url.fragment());
+    auto const& url = paint_value->as_url();
+    if (!url.fragment().has_value())
+        return {};
+    auto gradient = document().get_element_by_id(url.fragment()->to_deprecated_string());
     if (!gradient)
         return {};
     if (is<SVG::SVGGradientElement>(*gradient))
diff --git a/Userland/Libraries/LibWeb/URL/URL.cpp b/Userland/Libraries/LibWeb/URL/URL.cpp
index 1c24367c5084..28dde4d2eb6a 100644
--- a/Userland/Libraries/LibWeb/URL/URL.cpp
+++ b/Userland/Libraries/LibWeb/URL/URL.cpp
@@ -442,7 +442,7 @@ WebIDL::ExceptionOr<String> URL::hash() const
     auto& vm = realm().vm();
 
     // 1. If this’s URL’s fragment is either null or the empty string, then return the empty string.
-    if (m_url.fragment().is_null() || m_url.fragment().is_empty())
+    if (!m_url.fragment().has_value() || m_url.fragment()->is_empty())
         return String {};
 
     // 2. Return U+0023 (#), followed by this’s URL’s fragment.
@@ -469,7 +469,7 @@ void URL::set_hash(String const& hash)
 
     // 3. Set this’s URL’s fragment to the empty string.
     auto url = m_url; // We copy the URL here to follow other browser's behavior of reverting the hash change if the parse failed.
-    url.set_fragment(DeprecatedString::empty());
+    url.set_fragment(String {});
 
     // 4. Basic URL parse input with this’s URL as url and fragment state as state override.
     auto result_url = URLParser::basic_parse(input, {}, move(url), URLParser::State::Fragment);
diff --git a/Userland/Libraries/LibWeb/WebSockets/WebSocket.cpp b/Userland/Libraries/LibWeb/WebSockets/WebSocket.cpp
index e1ace23d0d8c..bf58ac04591b 100644
--- a/Userland/Libraries/LibWeb/WebSockets/WebSocket.cpp
+++ b/Userland/Libraries/LibWeb/WebSockets/WebSocket.cpp
@@ -79,7 +79,7 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<WebSocket>> WebSocket::construct_impl(JS::R
         return WebIDL::SyntaxError::create(realm, ""Invalid protocol""sv);
 
     // 7. If urlRecord’s fragment is non-null, then throw a ""SyntaxError"" DOMException.
-    if (!url_record.fragment().is_empty())
+    if (url_record.fragment().has_value())
         return WebIDL::SyntaxError::create(realm, ""Presence of URL fragment is invalid""sv);
 
     Vector<String> protocols_sequence;
diff --git a/Userland/Services/LaunchServer/Launcher.cpp b/Userland/Services/LaunchServer/Launcher.cpp
index 295d17ab6f13..165e6ca5b8ad 100644
--- a/Userland/Services/LaunchServer/Launcher.cpp
+++ b/Userland/Services/LaunchServer/Launcher.cpp
@@ -357,12 +357,12 @@ bool Launcher::open_file_url(const URL& url)
 
     if (S_ISDIR(st.st_mode)) {
         Vector<DeprecatedString> fm_arguments;
-        if (url.fragment().is_empty()) {
+        if (!url.fragment().has_value() || url.fragment()->is_empty()) {
             fm_arguments.append(file_path);
         } else {
             fm_arguments.append(""-s"");
             fm_arguments.append(""-r"");
-            fm_arguments.append(DeprecatedString::formatted(""{}/{}"", file_path, url.fragment()));
+            fm_arguments.append(DeprecatedString::formatted(""{}/{}"", file_path, *url.fragment()));
         }
 
         auto handler_optional = m_file_handlers.get(""directory"");"
d2ca522540788e96f3942598f40b04ba21ed44c1,2024-11-24 02:36:32,Jonne Ransijn,libweb: Use `is_viewport` helper,False,Use `is_viewport` helper,libweb,"diff --git a/Libraries/LibWeb/Painting/PaintableBox.cpp b/Libraries/LibWeb/Painting/PaintableBox.cpp
index cffeb0110317..4abec2825ebc 100644
--- a/Libraries/LibWeb/Painting/PaintableBox.cpp
+++ b/Libraries/LibWeb/Painting/PaintableBox.cpp
@@ -865,7 +865,7 @@ TraversalDecision PaintableBox::hit_test(CSSPixelPoint position, HitTestType typ
     if (hit_test_scrollbars(position_adjusted_by_scroll_offset, callback) == TraversalDecision::Break)
         return TraversalDecision::Break;
 
-    if (layout_node_with_style_and_box_metrics().is_viewport()) {
+    if (is_viewport()) {
         auto& viewport_paintable = const_cast<ViewportPaintable&>(static_cast<ViewportPaintable const&>(*this));
         viewport_paintable.build_stacking_context_tree_if_needed();
         viewport_paintable.document().update_paint_and_hit_testing_properties_if_needed();"
a729677561fc2e6fc0cf3ce6ad395a77630ebe33,2024-03-24 02:56:31,Timothy Flynn,meta: Port recent changes to the GN build,False,Port recent changes to the GN build,meta,"diff --git a/Meta/gn/secondary/AK/BUILD.gn b/Meta/gn/secondary/AK/BUILD.gn
index 86986055c5e2..dca87520c757 100644
--- a/Meta/gn/secondary/AK/BUILD.gn
+++ b/Meta/gn/secondary/AK/BUILD.gn
@@ -204,10 +204,6 @@ shared_library(""AK"") {
     ""UBSanitizer.h"",
     ""UFixedBigInt.h"",
     ""UFixedBigIntDivision.h"",
-    ""URL.cpp"",
-    ""URL.h"",
-    ""URLParser.cpp"",
-    ""URLParser.h"",
     ""UUID.cpp"",
     ""UUID.h"",
     ""UnicodeUtils.h"",
diff --git a/Meta/gn/secondary/Ladybird/BUILD.gn b/Meta/gn/secondary/Ladybird/BUILD.gn
index 0a8405a75033..1527a7073278 100644
--- a/Meta/gn/secondary/Ladybird/BUILD.gn
+++ b/Meta/gn/secondary/Ladybird/BUILD.gn
@@ -70,6 +70,7 @@ executable(""ladybird_executable"") {
     ""//Userland/Libraries/LibMain"",
     ""//Userland/Libraries/LibProtocol"",
     ""//Userland/Libraries/LibSQL"",
+    ""//Userland/Libraries/LibURL"",
     ""//Userland/Libraries/LibWeb"",
     ""//Userland/Libraries/LibWebView"",
   ]
@@ -174,6 +175,7 @@ executable(""headless-browser"") {
     ""//Userland/Libraries/LibMain"",
     ""//Userland/Libraries/LibProtocol"",
     ""//Userland/Libraries/LibTLS"",
+    ""//Userland/Libraries/LibURL"",
     ""//Userland/Libraries/LibWeb"",
     ""//Userland/Libraries/LibWebSocket"",
     ""//Userland/Libraries/LibWebView"",
@@ -374,6 +376,7 @@ if (current_os != ""mac"") {
       ""//Userland/Libraries/LibTLS"",
       ""//Userland/Libraries/LibTextCodec"",
       ""//Userland/Libraries/LibThreading"",
+      ""//Userland/Libraries/LibURL"",
       ""//Userland/Libraries/LibVideo"",
       ""//Userland/Libraries/LibWasm"",
       ""//Userland/Libraries/LibWeb"",
@@ -413,6 +416,7 @@ if (current_os != ""mac"") {
       ""$root_out_dir/lib/liblagom-textcodec.dylib"",
       ""$root_out_dir/lib/liblagom-threading.dylib"",
       ""$root_out_dir/lib/liblagom-tls.dylib"",
+      ""$root_out_dir/lib/liblagom-url.dylib"",
       ""$root_out_dir/lib/liblagom-video.dylib"",
       ""$root_out_dir/lib/liblagom-wasm.dylib"",
       ""$root_out_dir/lib/liblagom-web.dylib"",
diff --git a/Meta/gn/secondary/Ladybird/RequestServer/BUILD.gn b/Meta/gn/secondary/Ladybird/RequestServer/BUILD.gn
index 460764bac167..16f6fdc33b8a 100644
--- a/Meta/gn/secondary/Ladybird/RequestServer/BUILD.gn
+++ b/Meta/gn/secondary/Ladybird/RequestServer/BUILD.gn
@@ -15,6 +15,7 @@ executable(""RequestServer"") {
     ""//Userland/Libraries/LibMain"",
     ""//Userland/Libraries/LibProtocol"",
     ""//Userland/Libraries/LibTLS"",
+    ""//Userland/Libraries/LibURL"",
     ""//Userland/Libraries/LibWebSocket"",
   ]
   sources = [
diff --git a/Meta/gn/secondary/Ladybird/WebContent/BUILD.gn b/Meta/gn/secondary/Ladybird/WebContent/BUILD.gn
index e39db3178b9e..6cd08e07521a 100644
--- a/Meta/gn/secondary/Ladybird/WebContent/BUILD.gn
+++ b/Meta/gn/secondary/Ladybird/WebContent/BUILD.gn
@@ -37,6 +37,7 @@ executable(""WebContent"") {
     ""//Userland/Libraries/LibJS"",
     ""//Userland/Libraries/LibMain"",
     ""//Userland/Libraries/LibProtocol"",
+    ""//Userland/Libraries/LibURL"",
     ""//Userland/Libraries/LibWeb"",
     ""//Userland/Libraries/LibWebSocket"",
     ""//Userland/Libraries/LibWebView"",
diff --git a/Meta/gn/secondary/Ladybird/WebDriver/BUILD.gn b/Meta/gn/secondary/Ladybird/WebDriver/BUILD.gn
index ba1fb427ce47..1661828edfbd 100644
--- a/Meta/gn/secondary/Ladybird/WebDriver/BUILD.gn
+++ b/Meta/gn/secondary/Ladybird/WebDriver/BUILD.gn
@@ -18,6 +18,7 @@ executable(""WebDriver"") {
     ""//Userland/Libraries/LibIPC"",
     ""//Userland/Libraries/LibJS"",
     ""//Userland/Libraries/LibMain"",
+    ""//Userland/Libraries/LibURL"",
     ""//Userland/Libraries/LibWeb"",
     ""//Userland/Libraries/LibWebSocket"",
     ""//Userland/Libraries/LibWebView:WebDriverClientEndpoint"",
diff --git a/Meta/gn/secondary/Ladybird/WebWorker/BUILD.gn b/Meta/gn/secondary/Ladybird/WebWorker/BUILD.gn
index bae40bb3fc44..ec6bec47e6f3 100644
--- a/Meta/gn/secondary/Ladybird/WebWorker/BUILD.gn
+++ b/Meta/gn/secondary/Ladybird/WebWorker/BUILD.gn
@@ -15,6 +15,7 @@ executable(""WebWorker"") {
     ""//Userland/Libraries/LibLocale"",
     ""//Userland/Libraries/LibMain"",
     ""//Userland/Libraries/LibProtocol"",
+    ""//Userland/Libraries/LibURL"",
     ""//Userland/Libraries/LibWeb"",
     ""//Userland/Libraries/LibWeb:WebWorkerClientEndpoint"",
     ""//Userland/Libraries/LibWeb:WebWorkerServerEndpoint"",
diff --git a/Meta/gn/secondary/Tests/AK/BUILD.gn b/Meta/gn/secondary/Tests/AK/BUILD.gn
index e3c336a7fccb..219186c8c1a5 100644
--- a/Meta/gn/secondary/Tests/AK/BUILD.gn
+++ b/Meta/gn/secondary/Tests/AK/BUILD.gn
@@ -80,7 +80,6 @@ tests = [
   ""TestTypeTraits"",
   ""TestTypedTransfer"",
   ""TestUFixedBigInt"",
-  ""TestURL"",
   ""TestUtf16"",
   ""TestUtf8"",
   ""TestVariant"",
diff --git a/Meta/gn/secondary/Tests/BUILD.gn b/Meta/gn/secondary/Tests/BUILD.gn
index a8e3c9f027c0..c90f90812bbe 100644
--- a/Meta/gn/secondary/Tests/BUILD.gn
+++ b/Meta/gn/secondary/Tests/BUILD.gn
@@ -2,6 +2,7 @@ group(""Tests"") {
   deps = [
     ""//Tests/AK"",
     ""//Tests/LibJS"",
+    ""//Tests/LibURL"",
   ]
   testonly = true
 }
diff --git a/Meta/gn/secondary/Tests/LibURL/BUILD.gn b/Meta/gn/secondary/Tests/LibURL/BUILD.gn
new file mode 100644
index 000000000000..6ba7cc0984b7
--- /dev/null
+++ b/Meta/gn/secondary/Tests/LibURL/BUILD.gn
@@ -0,0 +1,15 @@
+import(""//Tests/unittest.gni"")
+
+unittest(""TestURL"") {
+  include_dirs = [ ""//Userland/Libraries"" ]
+  sources = [ ""TestURL.cpp"" ]
+  deps = [
+    ""//AK"",
+    ""//Userland/Libraries/LibURL"",
+  ]
+}
+
+group(""LibURL"") {
+  testonly = true
+  deps = [ "":TestURL"" ]
+}
diff --git a/Meta/gn/secondary/Userland/Libraries/LibCore/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibCore/BUILD.gn
index a5b1586db074..2c6dce13e283 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibCore/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibCore/BUILD.gn
@@ -141,5 +141,6 @@ shared_library(""LibCore"") {
     ""//Meta/gn/build/libs/crypt"",
     ""//Meta/gn/build/libs/pthread"",
     ""//Userland/Libraries/LibSystem"",
+    ""//Userland/Libraries/LibURL"",
   ]
 }
diff --git a/Meta/gn/secondary/Userland/Libraries/LibGUI/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibGUI/BUILD.gn
index cb6757055df3..a2cf2afcbc0a 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibGUI/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibGUI/BUILD.gn
@@ -19,5 +19,6 @@ shared_library(""LibGUI"") {
     ""//Userland/Libraries/LibCore"",
     ""//Userland/Libraries/LibGfx"",
     ""//Userland/Libraries/LibSyntax"",
+    ""//Userland/Libraries/LibURL"",
   ]
 }
diff --git a/Meta/gn/secondary/Userland/Libraries/LibGemini/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibGemini/BUILD.gn
index 9be8f83fab18..959a780866ff 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibGemini/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibGemini/BUILD.gn
@@ -12,5 +12,6 @@ shared_library(""LibGemini"") {
     ""//AK"",
     ""//Userland/Libraries/LibCore"",
     ""//Userland/Libraries/LibTLS"",
+    ""//Userland/Libraries/LibURL"",
   ]
 }
diff --git a/Meta/gn/secondary/Userland/Libraries/LibGfx/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibGfx/BUILD.gn
index b390184d0e10..f027701b560b 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibGfx/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibGfx/BUILD.gn
@@ -97,6 +97,7 @@ shared_library(""LibGfx"") {
     ""Painter.cpp"",
     ""Palette.cpp"",
     ""Path.cpp"",
+    ""PathClipper.cpp"",
     ""Point.cpp"",
     ""Rect.cpp"",
     ""ShareableBitmap.cpp"",
@@ -122,6 +123,7 @@ shared_library(""LibGfx"") {
     ""//Userland/Libraries/LibIPC"",
     ""//Userland/Libraries/LibRIFF"",
     ""//Userland/Libraries/LibTextCodec"",
+    ""//Userland/Libraries/LibURL"",
     ""//Userland/Libraries/LibUnicode"",
   ]
 }
diff --git a/Meta/gn/secondary/Userland/Libraries/LibHTTP/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibHTTP/BUILD.gn
index 0219ceddb55d..7b99d33f3e29 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibHTTP/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibHTTP/BUILD.gn
@@ -12,5 +12,6 @@ shared_library(""LibHTTP"") {
     ""//Userland/Libraries/LibCompress"",
     ""//Userland/Libraries/LibCore"",
     ""//Userland/Libraries/LibTLS"",
+    ""//Userland/Libraries/LibURL"",
   ]
 }
diff --git a/Meta/gn/secondary/Userland/Libraries/LibIPC/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibIPC/BUILD.gn
index fccab3441704..07999f86da1d 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibIPC/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibIPC/BUILD.gn
@@ -22,5 +22,6 @@ shared_library(""LibIPC"") {
   deps = [
     ""//AK"",
     ""//Userland/Libraries/LibCore"",
+    ""//Userland/Libraries/LibURL"",
   ]
 }
diff --git a/Meta/gn/secondary/Userland/Libraries/LibProtocol/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibProtocol/BUILD.gn
index faa3fce9226c..a97e61c5a6f1 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibProtocol/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibProtocol/BUILD.gn
@@ -34,6 +34,7 @@ shared_library(""LibProtocol"") {
     ""//AK"",
     ""//Userland/Libraries/LibCore"",
     ""//Userland/Libraries/LibIPC"",
+    ""//Userland/Libraries/LibURL"",
   ]
   sources = [
     ""Request.cpp"",
diff --git a/Meta/gn/secondary/Userland/Libraries/LibURL/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibURL/BUILD.gn
new file mode 100644
index 000000000000..510fd1a03e53
--- /dev/null
+++ b/Meta/gn/secondary/Userland/Libraries/LibURL/BUILD.gn
@@ -0,0 +1,12 @@
+shared_library(""LibURL"") {
+  output_name = ""url""
+  include_dirs = [ ""//Userland/Libraries"" ]
+  sources = [
+    ""Forward.h"",
+    ""Parser.cpp"",
+    ""Parser.h"",
+    ""URL.cpp"",
+    ""URL.h"",
+  ]
+  deps = [ ""//AK"" ]
+}
diff --git a/Meta/gn/secondary/Userland/Libraries/LibUnicode/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibUnicode/BUILD.gn
index d65e87f5e507..72f637ada9d9 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibUnicode/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibUnicode/BUILD.gn
@@ -177,7 +177,10 @@ source_set(""LibUnicode"") {
     ""URL.cpp"",
     ""UnicodeUtils.cpp"",
   ]
-  deps = [ ""//AK"" ]
+  deps = [
+    ""//AK"",
+    ""//Userland/Libraries/LibURL"",
+  ]
 
   if (enable_unicode_database_download) {
     deps += [
diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWeb/BUILD.gn
index 956019dd64b0..156875a8d406 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/BUILD.gn
@@ -377,6 +377,7 @@ shared_library(""LibWeb"") {
            ""//Userland/Libraries/LibSoftGPU"",
            ""//Userland/Libraries/LibSyntax"",
            ""//Userland/Libraries/LibTextCodec"",
+           ""//Userland/Libraries/LibURL"",
            ""//Userland/Libraries/LibUnicode"",
            ""//Userland/Libraries/LibVideo"",
            ""//Userland/Libraries/LibWasm"",
diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/CSS/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWeb/CSS/BUILD.gn
index 82386ea14c8b..344e90216b6b 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/CSS/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/CSS/BUILD.gn
@@ -52,6 +52,7 @@ source_set(""CSS"") {
     ""Serialize.cpp"",
     ""Size.cpp"",
     ""StyleComputer.cpp"",
+    ""StyleInvalidation.cpp"",
     ""StyleProperties.cpp"",
     ""StyleProperty.cpp"",
     ""StyleSheet.cpp"",
diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/HTML/Canvas/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWeb/HTML/Canvas/BUILD.gn
index f28b1a7ba17b..b1f062974e26 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/HTML/Canvas/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/HTML/Canvas/BUILD.gn
@@ -4,7 +4,6 @@ source_set(""Canvas"") {
   sources = [
     ""CanvasDrawImage.cpp"",
     ""CanvasPath.cpp"",
-    ""CanvasPathClipper.cpp"",
     ""CanvasState.cpp"",
   ]
 }
diff --git a/Meta/gn/secondary/Userland/Libraries/LibWebSocket/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWebSocket/BUILD.gn
index 26593771cc8c..349cedebf2ad 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWebSocket/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibWebSocket/BUILD.gn
@@ -6,6 +6,7 @@ shared_library(""LibWebSocket"") {
     ""//Userland/Libraries/LibCore"",
     ""//Userland/Libraries/LibCrypto"",
     ""//Userland/Libraries/LibTLS"",
+    ""//Userland/Libraries/LibURL"",
   ]
   sources = [
     ""ConnectionInfo.cpp"",
diff --git a/Meta/gn/secondary/Userland/Libraries/LibWebView/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWebView/BUILD.gn
index dad1fbac7725..a23901b99c69 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWebView/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibWebView/BUILD.gn
@@ -113,6 +113,7 @@ shared_library(""LibWebView"") {
     ""//Userland/Libraries/LibJS"",
     ""//Userland/Libraries/LibProtocol"",
     ""//Userland/Libraries/LibSQL"",
+    ""//Userland/Libraries/LibURL"",
     ""//Userland/Libraries/LibWeb"",
   ]
   sources = ["
23158aef2e35af8ecf503128a2aaa999acf8a1ac,2019-12-21 04:25:08,joshua stein,build: only setup git defines for About application,False,only setup git defines for About application,build,"diff --git a/Applications/About/Makefile b/Applications/About/Makefile
index 7c830c994f28..be5c34c9f67b 100755
--- a/Applications/About/Makefile
+++ b/Applications/About/Makefile
@@ -5,4 +5,6 @@ PROGRAM = About
 
 LDFLAGS = -lgui -ldraw -lipc -lcore -lc
 
+DEFINES += -DGIT_COMMIT=\""`git rev-parse --short HEAD`\"" -DGIT_BRANCH=\""`git rev-parse --abbrev-ref HEAD`\"" -DGIT_CHANGES=\""`git diff-index --quiet HEAD -- && echo ""tracked""|| echo ""untracked""`\""
+
 include ../../Makefile.common
diff --git a/Makefile.common b/Makefile.common
index 59a8483db9c2..b4c5cba18cbd 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -65,7 +65,7 @@ endif
 #SUGGEST_FLAGS = -Wsuggest-final-types -Wsuggest-final-methods -Wsuggest-override #-Wsuggest-attribute=noreturn 
 CXXFLAGS = -MMD -MP $(WARNING_FLAGS) $(OPTIMIZATION_FLAGS) $(FLAVOR_FLAGS) $(ARCH_FLAGS) $(STANDARD_FLAGS) $(SUGGEST_FLAGS) $(INCLUDE_FLAGS) $(DEFINES) $(SUBPROJECT_CXXFLAGS)
 
-DEFINES += -DSANITIZE_PTRS -DGIT_COMMIT=\""`git rev-parse --short HEAD`\"" -DGIT_BRANCH=\""`git rev-parse --abbrev-ref HEAD`\"" -DGIT_CHANGES=\""`git diff-index --quiet HEAD -- && echo ""tracked""|| echo ""untracked""`\""
+DEFINES += -DSANITIZE_PTRS
 
 IPCCOMPILER = $(SERENITY_BASE_DIR)/DevTools/IPCCompiler/IPCCompiler"
72cccfddbf0883f1b08e31b681607b372a089162,2021-03-12 16:00:33,Andreas Kling,kernel: Convert klog() => AK::Format in APICTimer,False,Convert klog() => AK::Format in APICTimer,kernel,"diff --git a/Kernel/Time/APICTimer.cpp b/Kernel/Time/APICTimer.cpp
index fe69eec78ac1..109b648a419a 100644
--- a/Kernel/Time/APICTimer.cpp
+++ b/Kernel/Time/APICTimer.cpp
@@ -27,6 +27,7 @@
 #include <Kernel/Arch/i386/CPU.h>
 #include <Kernel/IO.h>
 #include <Kernel/Interrupts/APIC.h>
+#include <Kernel/Panic.h>
 #include <Kernel/Scheduler.h>
 #include <Kernel/Thread.h>
 #include <Kernel/Time/APICTimer.h>
@@ -56,7 +57,7 @@ UNMAP_AFTER_INIT bool APICTimer::calibrate(HardwareTimerBase& calibration_source
 {
     VERIFY_INTERRUPTS_DISABLED();
 
-    klog() << ""APICTimer: Using "" << calibration_source.model() << "" as calibration source"";
+    dmesgln(""APICTimer: Using {} as calibration source"", calibration_source.model());
 
     auto& apic = APIC::the();
 #ifdef APIC_TIMER_MEASURE_CPU_CLOCK
@@ -100,8 +101,8 @@ UNMAP_AFTER_INIT bool APICTimer::calibrate(HardwareTimerBase& calibration_source
     // calbibration_source timer to fire so that we can read the current
     // tick count from the APIC timer
     auto original_callback = set_callback([&](const RegisterState&) {
-        klog() << ""APICTimer: Timer fired during calibration!"";
-        VERIFY_NOT_REACHED(); // TODO: How should we handle this?
+        // TODO: How should we handle this?
+        PANIC(""APICTimer: Timer fired during calibration!"");
     });
     apic.setup_local_timer(0xffffffff, APIC::TimerMode::Periodic, true);
 
@@ -120,27 +121,27 @@ UNMAP_AFTER_INIT bool APICTimer::calibrate(HardwareTimerBase& calibration_source
     if (query_reference) {
         u64 one_tick_ns = calibration_source.raw_to_ns((end_reference - start_reference) / ticks_in_100ms);
         m_frequency = (u32)(1000000000ull / one_tick_ns);
-        klog() << ""APICTimer: Ticks per second: "" << m_frequency << "" ("" << (one_tick_ns / 1000000) << ""."" << (one_tick_ns % 1000000) << ""ms)"";
+        dmesgln(""APICTimer: Ticks per second: {} ({}.{}ms)"", m_frequency, one_tick_ns / 1000000, one_tick_ns % 1000000);
     } else {
         // For now, assume the frequency is exactly the same
         m_frequency = calibration_source.ticks_per_second();
-        klog() << ""APICTimer: Ticks per second: "" << m_frequency << "" (assume same frequency as reference clock)"";
+        dmesgln(""APICTimer: Ticks per second: {} (assume same frequency as reference clock)"", m_frequency);
     }
 
     auto delta_apic_count = start_apic_count - end_apic_count; // The APIC current count register decrements!
     m_timer_period = (delta_apic_count * apic.get_timer_divisor()) / ticks_in_100ms;
 
     u64 apic_freq = delta_apic_count * apic.get_timer_divisor() * 10;
-    klog() << ""APICTimer: Bus clock speed: "" << (apic_freq / 1000000) << ""."" << (apic_freq % 1000000) << "" MHz"";
+    dmesgln(""APICTimer: Bus clock speed: {}.{} MHz"", apic_freq / 1000000, apic_freq % 1000000);
     if (apic_freq < 1000000) {
-        klog() << ""APICTimer: Frequency too slow!"";
+        dmesgln(""APICTimer: Frequency too slow!"");
         return false;
     }
 
 #ifdef APIC_TIMER_MEASURE_CPU_CLOCK
     if (supports_tsc) {
         auto delta_tsc = (end_tsc - start_tsc) * 10;
-        klog() << ""APICTimer: CPU clock speed: "" << (delta_tsc / 1000000) << ""."" << (delta_tsc % 1000000) << "" MHz"";
+        dmesgln(""APICTimer: CPU clock speed: {}.{} MHz"", delta_tsc / 1000000, delta_tsc % 1000000);
     }
 #endif"
b38beb106e010e327d5956f3a0e825b0d2632dec,2023-03-10 16:37:14,kleines Filmröllchen,ak: Add constexpr floor and round,False,Add constexpr floor and round,ak,"diff --git a/AK/Math.h b/AK/Math.h
index fe03085e7616..982ae5c89a53 100644
--- a/AK/Math.h
+++ b/AK/Math.h
@@ -757,6 +757,36 @@ constexpr T ceil(T num)
 #endif
 }
 
+template<FloatingPoint T>
+constexpr T floor(T num)
+{
+    if (is_constant_evaluated()) {
+        if (num < NumericLimits<i64>::min() || num > NumericLimits<i64>::max())
+            return num;
+        return (static_cast<T>(static_cast<i64>(num)) == num)
+            ? static_cast<i64>(num)
+            : static_cast<i64>(num) - ((num > 0) ? 0 : 1);
+    }
+#if ARCH(AARCH64)
+    AARCH64_INSTRUCTION(frintm, num);
+#else
+    return __builtin_floor(num);
+#endif
+}
+
+template<FloatingPoint T>
+constexpr T round(T x)
+{
+    CONSTEXPR_STATE(round, x);
+    // Note: This is break-tie-away-from-zero, so not the hw's understanding of
+    //       ""nearest"", which would be towards even.
+    if (x == 0.)
+        return x;
+    if (x > 0.)
+        return floor(x + .5);
+    return ceil(x - .5);
+}
+
 #undef CONSTEXPR_STATE
 #undef AARCH64_INSTRUCTION
 }"
a296020e03643933b50675ffb394039425d02f74,2020-07-28 22:40:10,Ben Wiederhake,libcrypto: Implement and test CTR decryption,False,Implement and test CTR decryption,libcrypto,"diff --git a/Libraries/LibCrypto/Cipher/Mode/CTR.h b/Libraries/LibCrypto/Cipher/Mode/CTR.h
index 07e4e1a0f4c3..bb11843f748f 100644
--- a/Libraries/LibCrypto/Cipher/Mode/CTR.h
+++ b/Libraries/LibCrypto/Cipher/Mode/CTR.h
@@ -95,9 +95,12 @@ class CTR : public Mode<T> {
 
     virtual ~CTR() { }
 
+    // Must intercept `Intent`, because AES must always be set to
+    // Encryption, even when decrypting AES-CTR.
+    // TODO: How to deal with ciphers that take different arguments?
     template<typename... Args>
-    explicit constexpr CTR<T>(Args... args)
-        : Mode<T>(args...)
+    explicit constexpr CTR<T>(const ByteBuffer& user_key, size_t key_bits, Intent = Intent::Encryption, Args... args)
+        : Mode<T>(user_key, key_bits, args...)
     {
     }
 
@@ -125,10 +128,8 @@ class CTR : public Mode<T> {
 
     virtual void decrypt(const ByteBuffer& in, ByteBuffer& out, Optional<ByteBuffer> ivec = {}) override
     {
-        (void)in;
-        (void)out;
-        (void)ivec;
-        // FIXME: Implement CTR decryption when it is needed.
+        // XOR (and thus CTR) is the most symmetric mode.
+        this->encrypt(in, out, ivec);
     }
 
 private:
diff --git a/Userland/test-crypto.cpp b/Userland/test-crypto.cpp
index 4d6eea100bb4..54720c5d4715 100644
--- a/Userland/test-crypto.cpp
+++ b/Userland/test-crypto.cpp
@@ -869,8 +869,40 @@ void aes_ctr_test_encrypt()
 
 void aes_ctr_test_decrypt()
 {
-    // FIXME Test not implemented yet
-    // Also, CTR implementation not done yet, even though it's trivial: Just ignore ""intent"".
+    auto test_it = [](auto key, auto ivec, auto in, auto out_expected) {
+        // nonce is already included in ivec.
+        Crypto::Cipher::AESCipher::CTRMode cipher(key, 8 * key.size(), Crypto::Cipher::Intent::Decryption);
+        ByteBuffer out_actual = ByteBuffer::create_zeroed(in.size());
+        cipher.decrypt(in, out_actual, ivec);
+        if (out_expected.size() != out_actual.size()) {
+            FAIL(size mismatch);
+            printf(""Expected %zu bytes but got %zu\n"", out_expected.size(), out_actual.size());
+            print_buffer(out_actual, Crypto::Cipher::AESCipher::block_size());
+        } else if (memcmp(out_expected.data(), out_actual.data(), out_expected.size()) != 0) {
+            FAIL(invalid data);
+            print_buffer(out_actual, Crypto::Cipher::AESCipher::block_size());
+        } else
+            PASS;
+    };
+    // From RFC 3686, Section 6
+    {
+        // Test Vector #1
+        I_TEST((AES CTR 16 octets with 128 bit key | Decrypt))
+        u8 key[] {
+            0xae, 0x68, 0x52, 0xf8, 0x12, 0x10, 0x67, 0xcc, 0x4b, 0xf7, 0xa5, 0x76, 0x55, 0x77, 0xf3, 0x9e
+        };
+        u8 ivec[] {
+            0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 + 1 // See CTR.h
+        };
+        u8 out[] {
+            0x53, 0x69, 0x6e, 0x67, 0x6c, 0x65, 0x20, 0x62, 0x6c, 0x6f, 0x63, 0x6b, 0x20, 0x6d, 0x73, 0x67
+        };
+        u8 in[] {
+            0xe4, 0x09, 0x5d, 0x4f, 0xb7, 0xa7, 0xb3, 0x79, 0x2d, 0x61, 0x75, 0xa3, 0x26, 0x13, 0x11, 0xb8
+        };
+        test_it(AS_BB(key), AS_BB(ivec), AS_BB(in), AS_BB(out));
+    }
+    // If encryption works, then decryption works, too.
 }
 
 int md5_tests()"
01a0aa6e0b059b8bf7d258d5025109cc31fd004b,2021-07-08 13:41:00,Daniel Bertalan,hackstudio: Do not check NonnullRefPtr for null value,False,Do not check NonnullRefPtr for null value,hackstudio,"diff --git a/Userland/DevTools/HackStudio/Project.cpp b/Userland/DevTools/HackStudio/Project.cpp
index 12aca881f6e7..1ffdbebfc068 100644
--- a/Userland/DevTools/HackStudio/Project.cpp
+++ b/Userland/DevTools/HackStudio/Project.cpp
@@ -41,8 +41,7 @@ void Project::for_each_text_file(Function<void(const ProjectFile&)> callback) co
 {
     traverse_model(model(), {}, [&](auto& index) {
         auto file = get_file(model().full_path(index));
-        if (file)
-            callback(*file);
+        callback(*file);
     });
 }"
dfd48ab6432932119a54181072031010d2e66a47,2023-06-27 19:58:22,kleines Filmröllchen,libaudio: Extract MP3 synchronize to static helper function,False,Extract MP3 synchronize to static helper function,libaudio,"diff --git a/Userland/Libraries/LibAudio/MP3Loader.cpp b/Userland/Libraries/LibAudio/MP3Loader.cpp
index b73dc28dc24c..2867e68a5c9a 100644
--- a/Userland/Libraries/LibAudio/MP3Loader.cpp
+++ b/Userland/Libraries/LibAudio/MP3Loader.cpp
@@ -188,21 +188,26 @@ ErrorOr<MP3::Header, LoaderError> MP3LoaderPlugin::read_header()
     return header;
 }
 
-MaybeLoaderError MP3LoaderPlugin::synchronize()
+MaybeLoaderError MP3LoaderPlugin::synchronize(BigEndianInputBitStream& stream, size_t sample_index)
 {
     size_t one_counter = 0;
-    while (one_counter < 12 && !m_bitstream->is_eof()) {
-        bool const bit = LOADER_TRY(m_bitstream->read_bit());
+    while (one_counter < 12 && !stream.is_eof()) {
+        bool const bit = LOADER_TRY(stream.read_bit());
         one_counter = bit ? one_counter + 1 : 0;
         if (!bit) {
-            m_bitstream->align_to_byte_boundary();
+            stream.align_to_byte_boundary();
         }
     }
     if (one_counter != 12)
-        return LoaderError { LoaderError::Category::Format, m_loaded_samples, ""Failed to synchronize."" };
+        return LoaderError { LoaderError::Category::Format, sample_index, ""Failed to synchronize."" };
     return {};
 }
 
+MaybeLoaderError MP3LoaderPlugin::synchronize()
+{
+    return MP3LoaderPlugin::synchronize(*m_bitstream, m_loaded_samples);
+}
+
 ErrorOr<MP3::MP3Frame, LoaderError> MP3LoaderPlugin::read_next_frame()
 {
     // Note: This will spin until we find a correct frame, or we reach eof.
diff --git a/Userland/Libraries/LibAudio/MP3Loader.h b/Userland/Libraries/LibAudio/MP3Loader.h
index 610ae21b3cfd..af01bf679e14 100644
--- a/Userland/Libraries/LibAudio/MP3Loader.h
+++ b/Userland/Libraries/LibAudio/MP3Loader.h
@@ -41,6 +41,7 @@ class MP3LoaderPlugin : public LoaderPlugin {
 
 private:
     MaybeLoaderError initialize();
+    static MaybeLoaderError synchronize(BigEndianInputBitStream& stream, size_t sample_index);
     MaybeLoaderError synchronize();
     MaybeLoaderError build_seek_table();
     ErrorOr<MP3::Header, LoaderError> read_header();"
def8b44c4083f2d79bdb7b44701d6a353cb52394,2021-09-01 18:09:14,davidot,libjs: Add support for public fields in classes,False,Add support for public fields in classes,libjs,"diff --git a/Userland/Libraries/LibJS/AST.cpp b/Userland/Libraries/LibJS/AST.cpp
index 78d1694d98c9..8cc535d1fd01 100644
--- a/Userland/Libraries/LibJS/AST.cpp
+++ b/Userland/Libraries/LibJS/AST.cpp
@@ -310,7 +310,8 @@ Value SuperCall::execute(Interpreter& interpreter, GlobalObject& global_object)
     [[maybe_unused]] auto& f = this_er.function_object();
 
     // 11. Perform ? InitializeInstanceElements(result, F).
-    // FIXME: This is missing here.
+    VERIFY(result.is_object());
+    vm.initialize_instance_elements(result.as_object(), f);
 
     // 12. Return result.
     return result;
@@ -867,6 +868,12 @@ Value ClassMethod::execute(Interpreter& interpreter, GlobalObject& global_object
     return m_function->execute(interpreter, global_object);
 }
 
+Value ClassField::execute(Interpreter& interpreter, GlobalObject&) const
+{
+    InterpreterNodeScope node_scope { interpreter, *this };
+    return {};
+}
+
 Value ClassExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
     InterpreterNodeScope node_scope { interpreter, *this };
@@ -923,7 +930,7 @@ Value ClassExpression::execute(Interpreter& interpreter, GlobalObject& global_ob
         interpreter.vm().throw_exception<TypeError>(global_object, ErrorType::NotAnObject, ""Class prototype"");
         return {};
     }
-    for (const auto& method : m_methods) {
+    for (auto const& method : m_methods) {
         auto method_value = method.execute(interpreter, global_object);
         if (interpreter.exception())
             return {};
@@ -960,6 +967,40 @@ Value ClassExpression::execute(Interpreter& interpreter, GlobalObject& global_ob
             return {};
     }
 
+    for (auto& field : m_fields) {
+        auto key = field.key().execute(interpreter, global_object);
+        if (interpreter.exception())
+            return {};
+
+        auto property_key = key.to_property_key(global_object);
+        if (interpreter.exception())
+            return {};
+
+        FunctionObject* initializer = nullptr;
+        if (field.initializer()) {
+            auto copy_initializer = field.initializer();
+            auto body = create_ast_node<ExpressionStatement>(field.initializer()->source_range(), copy_initializer.release_nonnull());
+            // FIXME: A potential optimization is not creating the functions here since these are never directly accessible.
+            initializer = OrdinaryFunctionObject::create(interpreter.global_object(), property_key.to_display_string(), *body, {}, 0, interpreter.lexical_environment(), FunctionKind::Regular, false);
+            initializer->set_home_object(field.is_static() ? class_constructor : &class_prototype.as_object());
+        }
+
+        if (field.is_static()) {
+            Value field_value = js_undefined();
+            if (initializer) {
+                field_value = interpreter.vm().call(*initializer, class_constructor_value);
+                if (interpreter.exception())
+                    return {};
+            }
+
+            class_constructor->create_data_property_or_throw(property_key, field_value);
+            if (interpreter.exception())
+                return {};
+        } else {
+            class_constructor->add_field(property_key, initializer);
+        }
+    }
+
     return class_constructor;
 }
 
@@ -1186,6 +1227,11 @@ void ClassExpression::dump(int indent) const
     outln(""(Methods)"");
     for (auto& method : m_methods)
         method.dump(indent + 1);
+
+    print_indent(indent);
+    outln(""(Fields)"");
+    for (auto& field : m_fields)
+        field.dump(indent + 1);
 }
 
 void ClassMethod::dump(int indent) const
@@ -1219,6 +1265,23 @@ void ClassMethod::dump(int indent) const
     m_function->dump(indent + 1);
 }
 
+void ClassField::dump(int indent) const
+{
+    ASTNode::dump(indent);
+    print_indent(indent);
+    outln(""(Key)"");
+    m_key->dump(indent + 1);
+
+    print_indent(indent);
+    outln(""Static: {}"", m_is_static);
+
+    if (m_initializer) {
+        print_indent(indent);
+        outln(""(Initializer)"");
+        m_initializer->dump(indent + 1);
+    }
+}
+
 void StringLiteral::dump(int indent) const
 {
     print_indent(indent);
diff --git a/Userland/Libraries/LibJS/AST.h b/Userland/Libraries/LibJS/AST.h
index 838450e8a4c5..b400640bce55 100644
--- a/Userland/Libraries/LibJS/AST.h
+++ b/Userland/Libraries/LibJS/AST.h
@@ -933,6 +933,30 @@ class ClassMethod final : public ASTNode {
     bool m_is_static;
 };
 
+class ClassField final : public ASTNode {
+public:
+    ClassField(SourceRange source_range, NonnullRefPtr<Expression> key, RefPtr<Expression> init, bool is_static)
+        : ASTNode(source_range)
+        , m_key(move(key))
+        , m_initializer(move(init))
+        , m_is_static(is_static)
+    {
+    }
+
+    Expression const& key() const { return *m_key; }
+    bool is_static() const { return m_is_static; }
+    RefPtr<Expression> const& initializer() const { return m_initializer; }
+    RefPtr<Expression>& initializer() { return m_initializer; }
+
+    virtual Value execute(Interpreter&, GlobalObject&) const override;
+    virtual void dump(int indent) const override;
+
+private:
+    NonnullRefPtr<Expression> m_key;
+    RefPtr<Expression> m_initializer;
+    bool m_is_static;
+};
+
 class SuperExpression final : public Expression {
 public:
     explicit SuperExpression(SourceRange source_range)
@@ -948,12 +972,13 @@ class SuperExpression final : public Expression {
 
 class ClassExpression final : public Expression {
 public:
-    ClassExpression(SourceRange source_range, String name, RefPtr<FunctionExpression> constructor, RefPtr<Expression> super_class, NonnullRefPtrVector<ClassMethod> methods)
+    ClassExpression(SourceRange source_range, String name, RefPtr<FunctionExpression> constructor, RefPtr<Expression> super_class, NonnullRefPtrVector<ClassMethod> methods, NonnullRefPtrVector<ClassField> fields)
         : Expression(source_range)
         , m_name(move(name))
         , m_constructor(move(constructor))
         , m_super_class(move(super_class))
         , m_methods(move(methods))
+        , m_fields(move(fields))
     {
     }
 
@@ -968,6 +993,7 @@ class ClassExpression final : public Expression {
     RefPtr<FunctionExpression> m_constructor;
     RefPtr<Expression> m_super_class;
     NonnullRefPtrVector<ClassMethod> m_methods;
+    NonnullRefPtrVector<ClassField> m_fields;
 };
 
 class ClassDeclaration final : public Declaration {
diff --git a/Userland/Libraries/LibJS/Parser.cpp b/Userland/Libraries/LibJS/Parser.cpp
index 8dfe614e6a24..d1528e64f9f4 100644
--- a/Userland/Libraries/LibJS/Parser.cpp
+++ b/Userland/Libraries/LibJS/Parser.cpp
@@ -643,6 +643,7 @@ NonnullRefPtr<ClassExpression> Parser::parse_class_expression(bool expect_class_
     consume(TokenType::Class);
 
     NonnullRefPtrVector<ClassMethod> methods;
+    NonnullRefPtrVector<ClassField> fields;
     RefPtr<Expression> super_class;
     RefPtr<FunctionExpression> constructor;
 
@@ -693,8 +694,8 @@ NonnullRefPtr<ClassExpression> Parser::parse_class_expression(bool expect_class_
             is_generator = true;
         }
 
+        StringView name;
         if (match_property_key()) {
-            StringView name;
             if (!is_generator && m_state.current_token.original_value() == ""static""sv) {
                 if (match(TokenType::Identifier)) {
                     consume();
@@ -707,12 +708,12 @@ NonnullRefPtr<ClassExpression> Parser::parse_class_expression(bool expect_class_
             }
 
             if (match(TokenType::Identifier)) {
-                auto identifier_name = m_state.current_token.value();
+                auto identifier_name = m_state.current_token.original_value();
 
-                if (identifier_name == ""get"") {
+                if (identifier_name == ""get""sv) {
                     method_kind = ClassMethod::Kind::Getter;
                     consume();
-                } else if (identifier_name == ""set"") {
+                } else if (identifier_name == ""set""sv) {
                     method_kind = ClassMethod::Kind::Setter;
                     consume();
                 }
@@ -740,7 +741,7 @@ NonnullRefPtr<ClassExpression> Parser::parse_class_expression(bool expect_class_
                 //   It is a Syntax Error if PropName of MethodDefinition is ""prototype"".
                 if (is_static && name == ""prototype""sv)
                     syntax_error(""Classes may not have a static property named 'prototype'"");
-            } else if (match(TokenType::ParenOpen) && (is_static || method_kind != ClassMethod::Kind::Method)) {
+            } else if ((match(TokenType::ParenOpen) || match(TokenType::Equals)) && (is_static || method_kind != ClassMethod::Kind::Method)) {
                 switch (method_kind) {
                 case ClassMethod::Kind::Method:
                     VERIFY(is_static);
@@ -762,7 +763,7 @@ NonnullRefPtr<ClassExpression> Parser::parse_class_expression(bool expect_class_
             }
 
             // Constructor may be a StringLiteral or an Identifier.
-            if (!is_static && name == ""constructor"") {
+            if (!is_static && name == ""constructor""sv) {
                 if (method_kind != ClassMethod::Kind::Method)
                     syntax_error(""Class constructor may not be an accessor"");
                 if (!constructor.is_null())
@@ -792,9 +793,29 @@ NonnullRefPtr<ClassExpression> Parser::parse_class_expression(bool expect_class_
             } else {
                 syntax_error(""No key for class method"");
             }
-        } else {
+        } else if (is_generator) {
             expected(""ParenOpen"");
             consume();
+        } else if (property_key.is_null()) {
+            expected(""property key"");
+            consume();
+        } else {
+            if (name == ""constructor""sv)
+                syntax_error(""Class cannot have field named 'constructor'"");
+
+            RefPtr<Expression> initializer;
+
+            if (match(TokenType::Equals)) {
+                consume();
+
+                TemporaryChange super_property_access_rollback(m_state.allow_super_property_lookup, true);
+                TemporaryChange field_initializer_rollback(m_state.in_class_field_initializer, true);
+                initializer = parse_expression(2);
+            }
+
+            fields.append(create_ast_node<ClassField>({ m_state.current_token.filename(), rule_start.position(), position() }, property_key.release_nonnull(), move(initializer), is_static));
+
+            consume_or_insert_semicolon();
         }
     }
 
@@ -821,7 +842,7 @@ NonnullRefPtr<ClassExpression> Parser::parse_class_expression(bool expect_class_
         }
     }
 
-    return create_ast_node<ClassExpression>({ m_state.current_token.filename(), rule_start.position(), position() }, move(class_name), move(constructor), move(super_class), move(methods));
+    return create_ast_node<ClassExpression>({ m_state.current_token.filename(), rule_start.position(), position() }, move(class_name), move(constructor), move(super_class), move(methods), move(fields));
 }
 
 Parser::PrimaryExpressionParseResult Parser::parse_primary_expression()
@@ -1535,6 +1556,7 @@ NonnullRefPtr<AssignmentExpression> Parser::parse_assignment_expression(Assignme
             parser.m_state.in_break_context = m_state.in_break_context;
             parser.m_state.in_continue_context = m_state.in_continue_context;
             parser.m_state.string_legacy_octal_escape_sequence_in_scope = m_state.string_legacy_octal_escape_sequence_in_scope;
+            parser.m_state.in_class_field_initializer = m_state.in_class_field_initializer;
 
             auto result = parser.parse_binding_pattern();
             if (parser.has_errors())
@@ -1577,6 +1599,8 @@ NonnullRefPtr<Identifier> Parser::parse_identifier()
 {
     auto identifier_start = position();
     auto token = consume_identifier();
+    if (m_state.in_class_field_initializer && token.value() == ""arguments""sv)
+        syntax_error(""'arguments' is not allowed in class field initializer"");
     return create_ast_node<Identifier>(
         { m_state.current_token.filename(), identifier_start, position() },
         token.value());
@@ -1757,6 +1781,7 @@ NonnullRefPtr<FunctionNodeType> Parser::parse_function_node(u8 parse_options)
     TemporaryChange super_constructor_call_rollback(m_state.allow_super_constructor_call, !!(parse_options & FunctionNodeParseOptions::AllowSuperConstructorCall));
     TemporaryChange break_context_rollback(m_state.in_break_context, false);
     TemporaryChange continue_context_rollback(m_state.in_continue_context, false);
+    TemporaryChange class_field_initializer_rollback(m_state.in_class_field_initializer, false);
 
     ScopePusher scope(*this, ScopePusher::Var, Parser::Scope::Function);
 
diff --git a/Userland/Libraries/LibJS/Parser.h b/Userland/Libraries/LibJS/Parser.h
index 12cf4d089ee2..41b6cef2c866 100644
--- a/Userland/Libraries/LibJS/Parser.h
+++ b/Userland/Libraries/LibJS/Parser.h
@@ -258,6 +258,7 @@ class Parser {
         bool in_break_context { false };
         bool in_continue_context { false };
         bool string_legacy_octal_escape_sequence_in_scope { false };
+        bool in_class_field_initializer { false };
 
         ParserState(Lexer, Program::Type);
     };
diff --git a/Userland/Libraries/LibJS/Runtime/FunctionObject.cpp b/Userland/Libraries/LibJS/Runtime/FunctionObject.cpp
index bf4e02b0f69d..da1f41029498 100644
--- a/Userland/Libraries/LibJS/Runtime/FunctionObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/FunctionObject.cpp
@@ -66,6 +66,23 @@ BoundFunction* FunctionObject::bind(Value bound_this_value, Vector<Value> argume
     return heap().allocate<BoundFunction>(global_object(), global_object(), target_function, bound_this_object, move(all_bound_arguments), computed_length, constructor_prototype);
 }
 
+void FunctionObject::add_field(StringOrSymbol property_key, FunctionObject* initializer)
+{
+    m_fields.empend(property_key, initializer);
+}
+
+// 7.3.31 DefineField ( receiver, fieldRecord ), https://tc39.es/ecma262/#sec-definefield
+void FunctionObject::InstanceField::define_field(VM& vm, Object& receiver) const
+{
+    Value init_value = js_undefined();
+    if (initializer) {
+        init_value = vm.call(*initializer, receiver.value_of());
+        if (vm.exception())
+            return;
+    }
+    receiver.create_data_property_or_throw(name, init_value);
+}
+
 void FunctionObject::visit_edges(Visitor& visitor)
 {
     Object::visit_edges(visitor);
@@ -75,6 +92,9 @@ void FunctionObject::visit_edges(Visitor& visitor)
 
     for (auto argument : m_bound_arguments)
         visitor.visit(argument);
+
+    for (auto& field : m_fields)
+        visitor.visit(field.initializer);
 }
 
 }
diff --git a/Userland/Libraries/LibJS/Runtime/FunctionObject.h b/Userland/Libraries/LibJS/Runtime/FunctionObject.h
index 5b089877b13f..3cfa76216611 100644
--- a/Userland/Libraries/LibJS/Runtime/FunctionObject.h
+++ b/Userland/Libraries/LibJS/Runtime/FunctionObject.h
@@ -63,6 +63,17 @@ class FunctionObject : public Object {
     // This is for IsSimpleParameterList (static semantics)
     bool has_simple_parameter_list() const { return m_has_simple_parameter_list; }
 
+    // [[Fields]]
+    struct InstanceField {
+        StringOrSymbol name;
+        FunctionObject* initializer { nullptr };
+
+        void define_field(VM& vm, Object& receiver) const;
+    };
+
+    Vector<InstanceField> const& fields() const { return m_fields; }
+    void add_field(StringOrSymbol property_key, FunctionObject* initializer);
+
 protected:
     virtual void visit_edges(Visitor&) override;
 
@@ -79,6 +90,7 @@ class FunctionObject : public Object {
     ConstructorKind m_constructor_kind = ConstructorKind::Base;
     ThisMode m_this_mode { ThisMode::Global };
     bool m_has_simple_parameter_list { false };
+    Vector<InstanceField> m_fields;
 };
 
 }
diff --git a/Userland/Libraries/LibJS/Runtime/VM.cpp b/Userland/Libraries/LibJS/Runtime/VM.cpp
index f8ebdab071fd..a0e0acceb812 100644
--- a/Userland/Libraries/LibJS/Runtime/VM.cpp
+++ b/Userland/Libraries/LibJS/Runtime/VM.cpp
@@ -457,6 +457,16 @@ static void append_bound_and_passed_arguments(MarkedValueList& arguments, Vector
     }
 }
 
+// 7.3.32 InitializeInstanceElements ( O, constructor ), https://tc39.es/ecma262/#sec-initializeinstanceelements
+void VM::initialize_instance_elements(Object& object, FunctionObject& constructor)
+{
+    for (auto& field : constructor.fields()) {
+        field.define_field(*this, object);
+        if (exception())
+            return;
+    }
+}
+
 Value VM::construct(FunctionObject& function, FunctionObject& new_target, Optional<MarkedValueList> arguments)
 {
     auto& global_object = function.global_object();
@@ -494,6 +504,14 @@ Value VM::construct(FunctionObject& function, FunctionObject& new_target, Option
 
     // If we are a Derived constructor, |this| has not been constructed before super is called.
     callee_context.this_value = this_argument;
+
+    if (function.constructor_kind() == FunctionObject::ConstructorKind::Base) {
+        VERIFY(this_argument.is_object());
+        initialize_instance_elements(this_argument.as_object(), function);
+        if (exception())
+            return {};
+    }
+
     auto result = function.construct(new_target);
 
     pop_execution_context();
diff --git a/Userland/Libraries/LibJS/Runtime/VM.h b/Userland/Libraries/LibJS/Runtime/VM.h
index 7b2981c68683..4b25bb3e3bc8 100644
--- a/Userland/Libraries/LibJS/Runtime/VM.h
+++ b/Userland/Libraries/LibJS/Runtime/VM.h
@@ -267,6 +267,8 @@ class VM : public RefCounted<VM> {
     Function<void(const Promise&)> on_promise_unhandled_rejection;
     Function<void(const Promise&)> on_promise_rejection_handled;
 
+    void initialize_instance_elements(Object& object, FunctionObject& constructor);
+
 private:
     VM();
 
diff --git a/Userland/Libraries/LibJS/Tests/classes/class-public-fields.js b/Userland/Libraries/LibJS/Tests/classes/class-public-fields.js
new file mode 100644
index 000000000000..86c1e86de783
--- /dev/null
+++ b/Userland/Libraries/LibJS/Tests/classes/class-public-fields.js
@@ -0,0 +1,87 @@
+test(""basic functionality"", () => {
+    class A {
+        number = 3;
+
+        string = ""foo"";
+
+        uninitialized;
+    }
+
+    const a = new A();
+    expect(a.number).toBe(3);
+    expect(a.string).toBe(""foo"");
+    expect(a.uninitialized).toBeUndefined();
+});
+
+test(""extended name syntax"", () => {
+    class A {
+        ""field with space"" = 1;
+
+        12 = ""twelve"";
+
+        [`he${""llo""}`] = 3;
+    }
+
+    const a = new A();
+    expect(a[""field with space""]).toBe(1);
+    expect(a[12]).toBe(""twelve"");
+    expect(a.hello).toBe(3);
+});
+
+test(""initializer has correct this value"", () => {
+    class A {
+        this_val = this;
+
+        this_name = this.this_val;
+    }
+
+    const a = new A();
+    expect(a.this_val).toBe(a);
+    expect(a.this_name).toBe(a);
+});
+
+test(""static fields"", () => {
+    class A {
+        static simple = 1;
+        simple = 2;
+
+        static ""with space"" = 3;
+
+        static 24 = ""two dozen"";
+
+        static [`he${""llo""}`] = ""friends"";
+
+        static this_val = this;
+        static this_name = this.name;
+        static this_val2 = this.this_val;
+    }
+
+    expect(A.simple).toBe(1);
+    expect(A[""with space""]).toBe(3);
+    expect(A[24]).toBe(""two dozen"");
+    expect(A.hello).toBe(""friends"");
+
+    expect(A.this_val).toBe(A);
+    expect(A.this_name).toBe(""A"");
+    expect(A.this_val2).toBe(A);
+
+    const a = new A();
+    expect(a.simple).toBe(2);
+});
+
+test(""with super class"", () => {
+    class A {
+        super_field = 3;
+    }
+
+    class B extends A {
+        references_super_field = super.super_field;
+        arrow_ref_super = () => (super.super_field = 4);
+    }
+
+    const b = new B();
+    expect(b.super_field).toBe(3);
+    expect(b.references_super_field).toBeUndefined();
+    b.arrow_ref_super();
+    expect(b.super_field).toBe(4);
+});"
caf652799f04d6008eae4ab793f393748f8ccd18,2022-05-06 00:55:04,Luke Wilde,systemmonitor: Consistently use u64 for ValueFormat::text_formatter,False,Consistently use u64 for ValueFormat::text_formatter,systemmonitor,"diff --git a/Userland/Applications/SystemMonitor/GraphWidget.h b/Userland/Applications/SystemMonitor/GraphWidget.h
index 26f078fdd214..0b8df57f9c4f 100644
--- a/Userland/Applications/SystemMonitor/GraphWidget.h
+++ b/Userland/Applications/SystemMonitor/GraphWidget.h
@@ -26,7 +26,7 @@ class GraphWidget final : public GUI::Frame {
     struct ValueFormat {
         Gfx::ColorRole graph_color_role { Gfx::ColorRole::Base };
         Color text_shadow_color { Color::Transparent };
-        Function<String(size_t)> text_formatter;
+        Function<String(u64)> text_formatter;
     };
     void set_value_format(size_t index, ValueFormat&& format)
     {
diff --git a/Userland/Applications/SystemMonitor/main.cpp b/Userland/Applications/SystemMonitor/main.cpp
index 83385035df5d..c7d64d6f07d1 100644
--- a/Userland/Applications/SystemMonitor/main.cpp
+++ b/Userland/Applications/SystemMonitor/main.cpp
@@ -661,13 +661,13 @@ void build_performance_tab(GUI::Widget& graphs_container)
             cpu_graph.set_max(100);
             cpu_graph.set_value_format(0, {
                                               .graph_color_role = ColorRole::SyntaxPreprocessorStatement,
-                                              .text_formatter = [](int value) {
+                                              .text_formatter = [](u64 value) {
                                                   return String::formatted(""Total: {}%"", value);
                                               },
                                           });
             cpu_graph.set_value_format(1, {
                                               .graph_color_role = ColorRole::SyntaxPreprocessorValue,
-                                              .text_formatter = [](int value) {
+                                              .text_formatter = [](u64 value) {
                                                   return String::formatted(""Kernel: {}%"", value);
                                               },
                                           });
@@ -687,19 +687,19 @@ void build_performance_tab(GUI::Widget& graphs_container)
     auto& memory_graph = *graphs_container.find_descendant_of_type_named<SystemMonitor::GraphWidget>(""memory_graph"");
     memory_graph.set_value_format(0, {
                                          .graph_color_role = ColorRole::SyntaxComment,
-                                         .text_formatter = [](int bytes) {
+                                         .text_formatter = [](u64 bytes) {
                                              return String::formatted(""Committed: {}"", human_readable_size(bytes));
                                          },
                                      });
     memory_graph.set_value_format(1, {
                                          .graph_color_role = ColorRole::SyntaxPreprocessorStatement,
-                                         .text_formatter = [](int bytes) {
+                                         .text_formatter = [](u64 bytes) {
                                              return String::formatted(""Allocated: {}"", human_readable_size(bytes));
                                          },
                                      });
     memory_graph.set_value_format(2, {
                                          .graph_color_role = ColorRole::SyntaxPreprocessorValue,
-                                         .text_formatter = [](int bytes) {
+                                         .text_formatter = [](u64 bytes) {
                                              return String::formatted(""Kernel heap: {}"", human_readable_size(bytes));
                                          },
                                      });"
93c999ce00c7ce44cdd3090e1774d00f4a184612,2022-07-21 20:06:08,Sam Atkins,libweb: Stop handling impossible Percentage return values,False,Stop handling impossible Percentage return values,libweb,"diff --git a/Userland/Libraries/LibWeb/CSS/Percentage.cpp b/Userland/Libraries/LibWeb/CSS/Percentage.cpp
index e6867bf95e4c..473e04be8f5e 100644
--- a/Userland/Libraries/LibWeb/CSS/Percentage.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Percentage.cpp
@@ -9,24 +9,24 @@
 
 namespace Web::CSS {
 
-Angle AnglePercentage::resolve_calculated(NonnullRefPtr<CalculatedStyleValue> const& calculated, Layout::Node const& layout_node, Angle const& reference_value) const
+Angle AnglePercentage::resolve_calculated(NonnullRefPtr<CalculatedStyleValue> const& calculated, Layout::Node const&, Angle const& reference_value) const
 {
-    return calculated->resolve_angle_percentage(reference_value)->resolved(layout_node, reference_value);
+    return calculated->resolve_angle_percentage(reference_value).value();
 }
 
-Frequency FrequencyPercentage::resolve_calculated(NonnullRefPtr<CalculatedStyleValue> const& calculated, Layout::Node const& layout_node, Frequency const& reference_value) const
+Frequency FrequencyPercentage::resolve_calculated(NonnullRefPtr<CalculatedStyleValue> const& calculated, Layout::Node const&, Frequency const& reference_value) const
 {
-    return calculated->resolve_frequency_percentage(reference_value)->resolved(layout_node, reference_value);
+    return calculated->resolve_frequency_percentage(reference_value).value();
 }
 
 Length LengthPercentage::resolve_calculated(NonnullRefPtr<CalculatedStyleValue> const& calculated, Layout::Node const& layout_node, Length const& reference_value) const
 {
-    return calculated->resolve_length_percentage(layout_node, reference_value)->resolved(layout_node, reference_value);
+    return calculated->resolve_length_percentage(layout_node, reference_value).value();
 }
 
-Time TimePercentage::resolve_calculated(NonnullRefPtr<CalculatedStyleValue> const& calculated, Layout::Node const& layout_node, Time const& reference_value) const
+Time TimePercentage::resolve_calculated(NonnullRefPtr<CalculatedStyleValue> const& calculated, Layout::Node const&, Time const& reference_value) const
 {
-    return calculated->resolve_time_percentage(reference_value)->resolved(layout_node, reference_value);
+    return calculated->resolve_time_percentage(reference_value).value();
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValue.cpp b/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
index e049dbd65f98..5cc9cca59103 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
@@ -661,18 +661,15 @@ Optional<Angle> CalculatedStyleValue::resolve_angle() const
     return {};
 }
 
-Optional<AnglePercentage> CalculatedStyleValue::resolve_angle_percentage(Angle const& percentage_basis) const
+Optional<Angle> CalculatedStyleValue::resolve_angle_percentage(Angle const& percentage_basis) const
 {
     auto result = m_expression->resolve(nullptr, percentage_basis);
 
     return result.value().visit(
-        [&](Angle const& angle) -> Optional<AnglePercentage> {
+        [&](Angle const& angle) -> Optional<Angle> {
             return angle;
         },
-        [&](Percentage const& percentage) -> Optional<AnglePercentage> {
-            return percentage;
-        },
-        [&](auto const&) -> Optional<AnglePercentage> {
+        [&](auto const&) -> Optional<Angle> {
             return {};
         });
 }
@@ -686,18 +683,15 @@ Optional<Frequency> CalculatedStyleValue::resolve_frequency() const
     return {};
 }
 
-Optional<FrequencyPercentage> CalculatedStyleValue::resolve_frequency_percentage(Frequency const& percentage_basis) const
+Optional<Frequency> CalculatedStyleValue::resolve_frequency_percentage(Frequency const& percentage_basis) const
 {
     auto result = m_expression->resolve(nullptr, percentage_basis);
 
     return result.value().visit(
-        [&](Frequency const& frequency) -> Optional<FrequencyPercentage> {
+        [&](Frequency const& frequency) -> Optional<Frequency> {
             return frequency;
         },
-        [&](Percentage const& percentage) -> Optional<FrequencyPercentage> {
-            return percentage;
-        },
-        [&](auto const&) -> Optional<FrequencyPercentage> {
+        [&](auto const&) -> Optional<Frequency> {
             return {};
         });
 }
@@ -711,18 +705,15 @@ Optional<Length> CalculatedStyleValue::resolve_length(Layout::Node const& layout
     return {};
 }
 
-Optional<LengthPercentage> CalculatedStyleValue::resolve_length_percentage(Layout::Node const& layout_node, Length const& percentage_basis) const
+Optional<Length> CalculatedStyleValue::resolve_length_percentage(Layout::Node const& layout_node, Length const& percentage_basis) const
 {
     auto result = m_expression->resolve(&layout_node, percentage_basis);
 
     return result.value().visit(
-        [&](Length const& length) -> Optional<LengthPercentage> {
+        [&](Length const& length) -> Optional<Length> {
             return length;
         },
-        [&](Percentage const& percentage) -> Optional<LengthPercentage> {
-            return percentage;
-        },
-        [&](auto const&) -> Optional<LengthPercentage> {
+        [&](auto const&) -> Optional<Length> {
             return {};
         });
 }
@@ -744,18 +735,15 @@ Optional<Time> CalculatedStyleValue::resolve_time() const
     return {};
 }
 
-Optional<TimePercentage> CalculatedStyleValue::resolve_time_percentage(Time const& percentage_basis) const
+Optional<Time> CalculatedStyleValue::resolve_time_percentage(Time const& percentage_basis) const
 {
     auto result = m_expression->resolve(nullptr, percentage_basis);
 
     return result.value().visit(
-        [&](Time const& time) -> Optional<TimePercentage> {
+        [&](Time const& time) -> Optional<Time> {
             return time;
         },
-        [&](Percentage const& percentage) -> Optional<TimePercentage> {
-            return percentage;
-        },
-        [&](auto const&) -> Optional<TimePercentage> {
+        [&](auto const&) -> Optional<Time> {
             return {};
         });
 }
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValue.h b/Userland/Libraries/LibWeb/CSS/StyleValue.h
index 2d2b90390ef8..a439dabe49ee 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValue.h
+++ b/Userland/Libraries/LibWeb/CSS/StyleValue.h
@@ -677,14 +677,14 @@ class CalculatedStyleValue : public StyleValue {
     NonnullOwnPtr<CalcSum> const& expression() const { return m_expression; }
 
     Optional<Angle> resolve_angle() const;
-    Optional<AnglePercentage> resolve_angle_percentage(Angle const& percentage_basis) const;
+    Optional<Angle> resolve_angle_percentage(Angle const& percentage_basis) const;
     Optional<Frequency> resolve_frequency() const;
-    Optional<FrequencyPercentage> resolve_frequency_percentage(Frequency const& percentage_basis) const;
+    Optional<Frequency> resolve_frequency_percentage(Frequency const& percentage_basis) const;
     Optional<Length> resolve_length(Layout::Node const& layout_node) const;
-    Optional<LengthPercentage> resolve_length_percentage(Layout::Node const&, Length const& percentage_basis) const;
+    Optional<Length> resolve_length_percentage(Layout::Node const&, Length const& percentage_basis) const;
     Optional<Percentage> resolve_percentage() const;
     Optional<Time> resolve_time() const;
-    Optional<TimePercentage> resolve_time_percentage(Time const& percentage_basis) const;
+    Optional<Time> resolve_time_percentage(Time const& percentage_basis) const;
     Optional<float> resolve_number();
     Optional<i64> resolve_integer();"
7e7ee2ec94feab7dc5ba20a27826d84a692a369c,2020-08-07 19:48:36,Brian Gianforcaro,kernel: Use Userspace<T> for the mount syscall,False,Use Userspace<T> for the mount syscall,kernel,"diff --git a/Kernel/Process.h b/Kernel/Process.h
index e27adc9d5d2a..22c90909fdad 100644
--- a/Kernel/Process.h
+++ b/Kernel/Process.h
@@ -281,7 +281,7 @@ class Process
     int sys$unlink(const char* pathname, size_t path_length);
     int sys$symlink(Userspace<const Syscall::SC_symlink_params*>);
     int sys$rmdir(Userspace<const char*> pathname, size_t path_length);
-    int sys$mount(const Syscall::SC_mount_params*);
+    int sys$mount(Userspace<const Syscall::SC_mount_params*>);
     int sys$umount(const char* mountpoint, size_t mountpoint_length);
     int sys$chmod(const char* pathname, size_t path_length, mode_t);
     int sys$fchmod(int fd, mode_t);
diff --git a/Kernel/Syscalls/mount.cpp b/Kernel/Syscalls/mount.cpp
index caf8bf9495f3..a10de855a558 100644
--- a/Kernel/Syscalls/mount.cpp
+++ b/Kernel/Syscalls/mount.cpp
@@ -35,7 +35,7 @@
 
 namespace Kernel {
 
-int Process::sys$mount(const Syscall::SC_mount_params* user_params)
+int Process::sys$mount(Userspace<const Syscall::SC_mount_params*> user_params)
 {
     if (!is_superuser())
         return -EPERM;"
468ac11f29c62ea4fbe2e1d3f231d53997539a1c,2021-04-21 17:59:46,Ali Mohammad Pur,meta: Add an option to precompile some very common AK headers,False,Add an option to precompile some very common AK headers,meta,"diff --git a/CMakeLists.txt b/CMakeLists.txt
index 8ba74b58689c..a442a012f59a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -26,6 +26,7 @@ option(ENABLE_ALL_THE_DEBUG_MACROS ""Enable all debug macros to validate they sti
 option(ENABLE_COMPILETIME_FORMAT_CHECK ""Enable compiletime format string checks"" ON)
 option(ENABLE_PCI_IDS_DOWNLOAD ""Enable download of the pci.ids database at build time"" ON)
 option(BUILD_LAGOM ""Build parts of the system targeting the host OS for fuzzing/testing"" OFF)
+option(PRECOMPILE_COMMON_HEADERS ""Precompile some common headers to speedup compilation"" ON)
 
 add_custom_target(run
     COMMAND ${CMAKE_SOURCE_DIR}/Meta/run.sh
diff --git a/Kernel/CMakeLists.txt b/Kernel/CMakeLists.txt
index 8b376c97490a..3b9e4311ef37 100644
--- a/Kernel/CMakeLists.txt
+++ b/Kernel/CMakeLists.txt
@@ -361,6 +361,7 @@ add_executable(Kernel ${SOURCES})
 target_link_libraries(Kernel kernel_heap gcc stdc++)
 add_dependencies(Kernel boot kernel_heap)
 install(TARGETS Kernel RUNTIME DESTINATION boot)
+serenity_add_ak_precompiled_headers_to_target(Kernel)
 
 add_custom_command(
     TARGET Kernel
diff --git a/Meta/CMake/precompile-headers.cmake b/Meta/CMake/precompile-headers.cmake
new file mode 100644
index 000000000000..10064715d688
--- /dev/null
+++ b/Meta/CMake/precompile-headers.cmake
@@ -0,0 +1,9 @@
+function(serenity_add_precompiled_header_to_target target header)
+    if (PRECOMPILE_COMMON_HEADERS AND COMMAND target_precompile_headers)
+        target_precompile_headers(${target} PRIVATE ${header})
+    endif ()
+endfunction()
+
+function(serenity_add_ak_precompiled_headers_to_target target)
+    serenity_add_precompiled_header_to_target(${target} ${CMAKE_SOURCE_DIR}/Meta/Precompile/AK.h)
+endfunction()
diff --git a/Meta/CMake/utils.cmake b/Meta/CMake/utils.cmake
index c659abd9005c..e3aa4e136e25 100644
--- a/Meta/CMake/utils.cmake
+++ b/Meta/CMake/utils.cmake
@@ -1,3 +1,5 @@
+include(${CMAKE_SOURCE_DIR}/Meta/CMake/precompile-headers.cmake)
+
 function(serenity_install_headers target_name)
     file(GLOB_RECURSE headers RELATIVE ${CMAKE_CURRENT_SOURCE_DIR} ""*.h"")
     foreach(header ${headers})
@@ -31,6 +33,7 @@ function(serenity_lib target_name fs_name)
     add_library(${target_name} SHARED ${SOURCES} ${GENERATED_SOURCES})
     install(TARGETS ${target_name} DESTINATION usr/lib)
     set_target_properties(${target_name} PROPERTIES OUTPUT_NAME ${fs_name})
+    serenity_add_ak_precompiled_headers_to_target(${target_name})
     serenity_generated_sources(${target_name})
 endfunction()
 
@@ -67,6 +70,7 @@ endfunction()
 function(serenity_bin target_name)
     add_executable(${target_name} ${SOURCES})
     install(TARGETS ${target_name} RUNTIME DESTINATION bin)
+    serenity_add_ak_precompiled_headers_to_target(${target_name})
     serenity_generated_sources(${target_name})
 endfunction()
 
diff --git a/Meta/Precompile/AK.h b/Meta/Precompile/AK.h
new file mode 100644
index 000000000000..000af2360d19
--- /dev/null
+++ b/Meta/Precompile/AK.h
@@ -0,0 +1,48 @@
+/*
+ * Copyright (c) 2021, Ali Mohammad Pur <ali.mpfard@gmail.com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <AK/Assertions.h>
+#include <AK/Badge.h>
+#include <AK/ByteBuffer.h>
+#include <AK/Format.h>
+#include <AK/Forward.h>
+#include <AK/Function.h>
+#include <AK/HashMap.h>
+#include <AK/JsonObject.h>
+#include <AK/LexicalPath.h>
+#include <AK/Optional.h>
+#include <AK/OwnPtr.h>
+#include <AK/RefCounted.h>
+#include <AK/RefPtr.h>
+#include <AK/StdLibExtras.h>
+#include <AK/String.h>
+#include <AK/StringBuilder.h>
+#include <AK/StringView.h>
+#include <AK/Types.h>
+#include <AK/URL.h>
+#include <AK/Vector.h>"
e56fe71dbc97a56f016f1de8aeedd4fa0105f4d7,2019-03-07 03:00:13,Andreas Kling,kernel: And some more KResult/KResultOr<T> porting work.,False,And some more KResult/KResultOr<T> porting work.,kernel,"diff --git a/Kernel/FileDescriptor.cpp b/Kernel/FileDescriptor.cpp
index ea680ee909de..a678afdfc3c9 100644
--- a/Kernel/FileDescriptor.cpp
+++ b/Kernel/FileDescriptor.cpp
@@ -352,7 +352,7 @@ const char* to_string(SocketRole role)
     }
 }
 
-String FileDescriptor::absolute_path()
+KResultOr<String> FileDescriptor::absolute_path()
 {
     Stopwatch sw(""absolute_path"");
     if (is_tty())
diff --git a/Kernel/FileDescriptor.h b/Kernel/FileDescriptor.h
index 55b08d9af3a6..0b890c04d28f 100644
--- a/Kernel/FileDescriptor.h
+++ b/Kernel/FileDescriptor.h
@@ -43,7 +43,7 @@ class FileDescriptor : public Retainable<FileDescriptor> {
 
     ByteBuffer read_entire_file(Process&);
 
-    String absolute_path();
+    KResultOr<String> absolute_path();
 
     bool is_directory() const;
 
diff --git a/Kernel/ProcFS.cpp b/Kernel/ProcFS.cpp
index 63f8b4369d70..7919ff90312d 100644
--- a/Kernel/ProcFS.cpp
+++ b/Kernel/ProcFS.cpp
@@ -188,7 +188,10 @@ ByteBuffer procfs$pid_fds(InodeIdentifier identifier)
         auto* descriptor = process.file_descriptor(i);
         if (!descriptor)
             continue;
-        builder.appendf(""% 3u %s\n"", i, descriptor->absolute_path().characters());
+        auto result = descriptor->absolute_path();
+        if (result.is_error())
+            continue;
+        builder.appendf(""% 3u %s\n"", i, result.value().characters());
     }
     return builder.to_byte_buffer();
 }
@@ -203,7 +206,10 @@ ByteBuffer procfs$pid_fd_entry(InodeIdentifier identifier)
     auto* descriptor = process.file_descriptor(fd);
     if (!descriptor)
         return { };
-    return descriptor->absolute_path().to_byte_buffer();
+    auto result = descriptor->absolute_path();
+    if (result.is_error())
+        return { };
+    return result.value().to_byte_buffer();
 }
 
 ByteBuffer procfs$pid_vm(InodeIdentifier identifier)
@@ -331,7 +337,10 @@ ByteBuffer procfs$pid_exe(InodeIdentifier identifier)
     auto& process = handle->process();
     auto inode = process.executable_inode();
     ASSERT(inode);
-    return VFS::the().absolute_path(*inode).to_byte_buffer();
+    auto result = VFS::the().absolute_path(*inode);
+    if (result.is_error())
+        return { };
+    return result.value().to_byte_buffer();
 }
 
 ByteBuffer procfs$pid_cwd(InodeIdentifier identifier)
@@ -339,7 +348,10 @@ ByteBuffer procfs$pid_cwd(InodeIdentifier identifier)
     auto handle = ProcessInspectionHandle::from_pid(to_pid(identifier));
     if (!handle)
         return { };
-    return VFS::the().absolute_path(handle->process().cwd_inode()).to_byte_buffer();
+    auto result = VFS::the().absolute_path(handle->process().cwd_inode());
+    if (result.is_error())
+        return { };
+    return result.value().to_byte_buffer();
 }
 
 ByteBuffer procfs$self(InodeIdentifier)
@@ -388,9 +400,12 @@ ByteBuffer procfs$mounts(InodeIdentifier)
             builder.appendf(""/"");
         else {
             builder.appendf(""%u:%u"", mount.host().fsid(), mount.host().index());
-            auto path = VFS::the().absolute_path(mount.host());
             builder.append(' ');
-            builder.append(path);
+            auto result = VFS::the().absolute_path(mount.host());
+            if (result.is_error())
+                builder.append(""[error]"");
+            else
+                builder.append(result.value());
         }
         builder.append('\n');
     });
@@ -411,7 +426,11 @@ ByteBuffer procfs$df(InodeIdentifier)
         if (!mount.host().is_valid())
             builder.append(""/"");
         else {
-            builder.append(VFS::the().absolute_path(mount.host()));
+            auto result = VFS::the().absolute_path(mount.host());
+            if (result.is_error())
+                builder.append(""[Error]"");
+            else
+                builder.append(result.value());
         }
         builder.append('\n');
     });
@@ -553,11 +572,13 @@ ByteBuffer procfs$all(InodeIdentifier)
 ByteBuffer procfs$inodes(InodeIdentifier)
 {
     extern HashTable<Inode*>& all_inodes();
-    auto& vfs = VFS::the();
     StringBuilder builder;
     for (auto it : all_inodes()) {
         RetainPtr<Inode> inode = *it;
-        String path = vfs.absolute_path(*inode);
+        auto result = VFS::the().absolute_path(*inode);
+        if (result.is_error())
+            continue;
+        auto path = result.value();
         builder.appendf(""Inode{K%x} %02u:%08u (%u) %s\n"", inode.ptr(), inode->fsid(), inode->index(), inode->retain_count(), path.characters());
     }
     return builder.to_byte_buffer();
@@ -880,13 +901,13 @@ bool ProcFSInode::traverse_as_directory(Function<bool(const FS::DirectoryEntry&)
         }
         for (auto pid_child : Process::all_pids()) {
             char name[16];
-            size_t name_length = ksprintf(name, ""%u"", pid_child);
+            int name_length = ksprintf(name, ""%u"", pid_child);
             callback({ name, name_length, to_identifier(fsid(), PDI_Root, pid_child, FI_PID), 0 });
         }
         break;
 
     case FI_Root_sys:
-        for (size_t i = 0; i < fs().m_sys_entries.size(); ++i) {
+        for (int i = 0; i < fs().m_sys_entries.size(); ++i) {
             auto& entry = fs().m_sys_entries[i];
             callback({ entry.name, strlen(entry.name), sys_var_to_identifier(fsid(), i), 0 });
         }
@@ -913,7 +934,7 @@ bool ProcFSInode::traverse_as_directory(Function<bool(const FS::DirectoryEntry&)
         if (!handle)
             return false;
         auto& process = handle->process();
-        for (size_t i = 0; i < process.max_open_file_descriptors(); ++i) {
+        for (int i = 0; i < process.max_open_file_descriptors(); ++i) {
             auto* descriptor = process.file_descriptor(i);
             if (!descriptor)
                 continue;
@@ -965,7 +986,7 @@ InodeIdentifier ProcFSInode::lookup(const String& name)
     }
 
     if (proc_file_type == FI_Root_sys) {
-        for (size_t i = 0; i < fs().m_sys_entries.size(); ++i) {
+        for (int i = 0; i < fs().m_sys_entries.size(); ++i) {
             auto& entry = fs().m_sys_entries[i];
             if (!strcmp(entry.name, name.characters()))
                 return sys_var_to_identifier(fsid(), i);
diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index 977ef02049ac..4d0fa7191d8f 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -1391,18 +1391,19 @@ int Process::sys$getcwd(char* buffer, ssize_t size)
         return -EINVAL;
     if (!validate_write(buffer, size))
         return -EFAULT;
-    auto path = VFS::the().absolute_path(cwd_inode());
-    if (path.is_null())
-        return -EINVAL;
+    auto path_or_error = VFS::the().absolute_path(cwd_inode());
+    if (path_or_error.is_error())
+        return path_or_error.error();
+    auto path = path_or_error.value();
     if (size < path.length() + 1)
         return -ERANGE;
     strcpy(buffer, path.characters());
     return 0;
 }
 
-size_t Process::number_of_open_file_descriptors() const
+int Process::number_of_open_file_descriptors() const
 {
-    size_t count = 0;
+    int count = 0;
     for (auto& descriptor : m_fds) {
         if (descriptor)
             ++count;
diff --git a/Kernel/Process.h b/Kernel/Process.h
index 62bfb9b960d6..1130ded9c074 100644
--- a/Kernel/Process.h
+++ b/Kernel/Process.h
@@ -276,8 +276,8 @@ class Process : public InlineLinkedListNode<Process>, public Weakable<Process> {
     Inode& cwd_inode();
     Inode* executable_inode() { return m_executable.ptr(); }
 
-    size_t number_of_open_file_descriptors() const;
-    size_t max_open_file_descriptors() const { return m_max_open_file_descriptors; }
+    int number_of_open_file_descriptors() const;
+    int max_open_file_descriptors() const { return m_max_open_file_descriptors; }
 
     void send_signal(byte signal, Process* sender);
 
@@ -366,7 +366,7 @@ class Process : public InlineLinkedListNode<Process>, public Weakable<Process> {
     Vector<int> m_select_exceptional_fds;
     timeval m_select_timeout;
     bool m_select_has_timeout { false };
-    size_t m_max_open_file_descriptors { 16 };
+    int m_max_open_file_descriptors { 16 };
     SignalActionData m_signal_action_data[32];
     dword m_pending_signals { 0 };
     dword m_signal_mask { 0 };
diff --git a/Kernel/VirtualFileSystem.cpp b/Kernel/VirtualFileSystem.cpp
index 773205dd1658..1fb13612dad1 100644
--- a/Kernel/VirtualFileSystem.cpp
+++ b/Kernel/VirtualFileSystem.cpp
@@ -355,25 +355,6 @@ KResultOr<Retained<Inode>> VFS::resolve_path_to_inode(const String& path, Inode&
     return Retained<Inode>(*get_inode(result.value()));
 }
 
-RetainPtr<Inode> VFS::resolve_path_to_inode(const String& path, Inode& base, int& error, RetainPtr<Inode>* parent_inode)
-{
-    // FIXME: This won't work nicely across mount boundaries.
-    FileSystemPath p(path);
-    if (!p.is_valid()) {
-        error = -EINVAL;
-        return nullptr;
-    }
-    InodeIdentifier parent_id;
-    auto inode_id = old_resolve_path(path, base.identifier(), error, 0, &parent_id);
-    if (parent_inode && parent_id.is_valid())
-        *parent_inode = get_inode(parent_id);
-    if (!inode_id.is_valid()) {
-        error = -ENOENT;
-        return nullptr;
-    }
-    return get_inode(inode_id);
-}
-
 KResult VFS::link(const String& old_path, const String& new_path, Inode& base)
 {
     auto old_inode_or_error = resolve_path_to_inode(old_path, base);
@@ -497,17 +478,16 @@ RetainPtr<Inode> VFS::get_inode(InodeIdentifier inode_id)
     return inode_id.fs()->get_inode(inode_id);
 }
 
-String VFS::absolute_path(InodeIdentifier inode_id)
+KResultOr<String> VFS::absolute_path(InodeIdentifier inode_id)
 {
     auto inode = get_inode(inode_id);
     if (!inode)
-        return { };
+        return KResult(-EIO);
     return absolute_path(*inode);
 }
 
-String VFS::absolute_path(Inode& core_inode)
+KResultOr<String> VFS::absolute_path(Inode& core_inode)
 {
-    int error;
     Vector<InodeIdentifier> lineage;
     RetainPtr<Inode> inode = &core_inode;
     while (inode->identifier() != root_inode_id()) {
@@ -518,11 +498,15 @@ String VFS::absolute_path(Inode& core_inode)
 
         InodeIdentifier parent_id;
         if (inode->is_directory()) {
-            parent_id = old_resolve_path("".."", inode->identifier(), error);
+            auto result = resolve_path("".."", inode->identifier());
+            if (result.is_error())
+                return result.error();
+            parent_id = result.value();
         } else {
             parent_id = inode->parent()->identifier();
         }
-        ASSERT(parent_id.is_valid());
+        if (!parent_id.is_valid())
+            return KResult(-EIO);
         inode = get_inode(parent_id);
     }
     if (lineage.is_empty())
diff --git a/Kernel/VirtualFileSystem.h b/Kernel/VirtualFileSystem.h
index d72cf9fb3c53..6baee90cd09e 100644
--- a/Kernel/VirtualFileSystem.h
+++ b/Kernel/VirtualFileSystem.h
@@ -84,8 +84,8 @@ class VFS {
     size_t mount_count() const { return m_mounts.size(); }
     void for_each_mount(Function<void(const Mount&)>) const;
 
-    String absolute_path(Inode&);
-    String absolute_path(InodeIdentifier);
+    KResultOr<String> absolute_path(Inode&);
+    KResultOr<String> absolute_path(InodeIdentifier);
 
     InodeIdentifier root_inode_id() const;
     Inode* root_inode() { return m_root_inode.ptr(); }
@@ -105,7 +105,6 @@ class VFS {
     void traverse_directory_inode(Inode&, Function<bool(const FS::DirectoryEntry&)>);
     InodeIdentifier old_resolve_path(const String& path, InodeIdentifier base, int& error, int options = 0, InodeIdentifier* parent_id = nullptr);
     KResultOr<InodeIdentifier> resolve_path(const String& path, InodeIdentifier base, int options = 0, InodeIdentifier* parent_id = nullptr);
-    RetainPtr<Inode> resolve_path_to_inode(const String& path, Inode& base, int& error, RetainPtr<Inode>* parent_id = nullptr);
     KResultOr<Retained<Inode>> resolve_path_to_inode(const String& path, Inode& base, RetainPtr<Inode>* parent_id = nullptr, int options = 0);
     KResultOr<InodeIdentifier> resolve_symbolic_link(InodeIdentifier base, Inode& symlink_inode);"
569c5a892234428965623aff00d11647dda1938c,2021-04-30 00:01:15,Brian Gianforcaro,kernel: Harden sys$purge Vector usage against OOM.,False,Harden sys$purge Vector usage against OOM.,kernel,"diff --git a/Kernel/Syscalls/purge.cpp b/Kernel/Syscalls/purge.cpp
index 642fc53aab26..cc5f7cd125e6 100644
--- a/Kernel/Syscalls/purge.cpp
+++ b/Kernel/Syscalls/purge.cpp
@@ -21,12 +21,22 @@ KResultOr<int> Process::sys$purge(int mode)
     if (mode & PURGE_ALL_VOLATILE) {
         NonnullRefPtrVector<AnonymousVMObject> vmobjects;
         {
+            KResult result(KSuccess);
             InterruptDisabler disabler;
             MM.for_each_vmobject([&](auto& vmobject) {
-                if (vmobject.is_anonymous())
-                    vmobjects.append(vmobject);
+                if (vmobject.is_anonymous()) {
+                    // In the event that the append fails, only attempt to continue
+                    // the purge if we have already appended something successfully.
+                    if (!vmobjects.try_append(vmobject) && vmobjects.is_empty()) {
+                        result = ENOMEM;
+                        return IterationDecision::Break;
+                    }
+                }
                 return IterationDecision::Continue;
             });
+
+            if (result.is_error())
+                return result.error();
         }
         for (auto& vmobject : vmobjects) {
             purged_page_count += vmobject.purge();
@@ -35,12 +45,22 @@ KResultOr<int> Process::sys$purge(int mode)
     if (mode & PURGE_ALL_CLEAN_INODE) {
         NonnullRefPtrVector<InodeVMObject> vmobjects;
         {
+            KResult result(KSuccess);
             InterruptDisabler disabler;
             MM.for_each_vmobject([&](auto& vmobject) {
-                if (vmobject.is_inode())
-                    vmobjects.append(static_cast<InodeVMObject&>(vmobject));
+                if (vmobject.is_inode()) {
+                    // In the event that the append fails, only attempt to continue
+                    // the purge if we have already appended something successfully.
+                    if (!vmobjects.try_append(static_cast<InodeVMObject&>(vmobject)) && vmobjects.is_empty()) {
+                        result = ENOMEM;
+                        return IterationDecision::Break;
+                    }
+                }
                 return IterationDecision::Continue;
             });
+
+            if (result.is_error())
+                return result.error();
         }
         for (auto& vmobject : vmobjects) {
             purged_page_count += vmobject.release_all_clean_pages();"
885004abee65fc7ad5740e6641da5313d13dcb63,2022-08-06 15:32:48,Linus Groh,libjs: Support creation of global object in Realm::set_global_object(),False,Support creation of global object in Realm::set_global_object(),libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/Realm.cpp b/Userland/Libraries/LibJS/Runtime/Realm.cpp
index 54a506103742..93cfb071d5d0 100644
--- a/Userland/Libraries/LibJS/Runtime/Realm.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Realm.cpp
@@ -75,8 +75,11 @@ void Realm::set_global_object(GlobalObject* global_object, GlobalObject* this_va
 {
     // 1. If globalObj is undefined, then
     if (global_object == nullptr) {
-        // NOTE: Step 1 is not supported, the global object must be allocated elsewhere.
-        VERIFY_NOT_REACHED();
+        // a. Let intrinsics be realmRec.[[Intrinsics]].
+        // b. Set globalObj to OrdinaryObjectCreate(intrinsics.[[%Object.prototype%]]).
+        // NOTE: We allocate a proper GlobalObject directly as this plain object is
+        //       turned into one via SetDefaultGlobalBindings in the spec.
+        global_object = heap().allocate_without_global_object<GlobalObject>(*this);
     }
 
     // 2. Assert: Type(globalObj) is Object."
8cfda86a459db42e5c361fdc84880f2b2248aab8,2021-01-19 12:49:43,AnotherTest,shell: Actually return the exit code of the file when running a file,False,Actually return the exit code of the file when running a file,shell,"diff --git a/Userland/Shell/Shell.cpp b/Userland/Shell/Shell.cpp
index d63fc3c0a516..c6168b88829c 100644
--- a/Userland/Shell/Shell.cpp
+++ b/Userland/Shell/Shell.cpp
@@ -1036,8 +1036,7 @@ bool Shell::run_file(const String& filename, bool explicitly_invoked)
     }
     auto file = file_result.value();
     auto data = file->read_all();
-    run_command(data);
-    return true;
+    return run_command(data) == 0;
 }
 void Shell::restore_ios()
 {"
faafaf9b43269f7d53d8abd189d22f4ba08edb19,2019-05-28 21:01:20,Robin Burchell,documentation: RIP the short-lived coding style,False,RIP the short-lived coding style,documentation,"diff --git a/Documentation/CodingStyle.md b/Documentation/CodingStyle.md
deleted file mode 100644
index c0ab7b5709af..000000000000
--- a/Documentation/CodingStyle.md
+++ /dev/null
@@ -1,1110 +0,0 @@
-# Serenity C++ coding style
-
-This document describes the coding style used for C++ code in the Serenity Operating System project. All new code should conform to this style.
-
-We'll definitely be tweaking and amending this over time, so let's consider it a living document. :)
-
-### Indentation
-
-[](#indentation-no-tabs) Use spaces, not tabs. Tabs should only appear in files that require them for semantic meaning, like Makefiles.
-
-[](#indentation-4-spaces) The indent size is 4 spaces.
-
-###### Right:
-
-```cpp
-int main()
-{
-    return 0;
-}
-```
-
-###### Wrong:
-
-```cpp
-int main() 
-{
-        return 0;
-}
-```
-
-[](#indentation-namespace) The contents of an outermost `namespace` block should not be indented.
-
-###### Right:
-
-```cpp
-// Container.h
-namespace AK {
-
-class Container {
-    Container();
-    ...
-};
-
-}
-
-// Container.cpp
-namespace AK {
-
-Container::Container()
-{
-    ...
-}
-
-}
-```
-
-###### Wrong:
-
-```cpp
-// Container.h
-namespace AK {
-
-    class Container {
-        Container();
-        ...
-    };
-
-}
-
-// Container.cpp
-namespace AK {
-
-    Container::Container()
-    {
-        ...
-    }
-
-}
-```
-
-[](#indentation-case-label) A case label should line up with its switch statement. The case statement is indented.
-
-###### Right:
-
-```cpp
-switch (condition) {
-case FooCondition:
-case BarCondition:
-    ++i;
-    break;
-default:
-    ++i;
-}
-```
-
-###### Wrong:
-
-```cpp
-switch (condition) {
-    case FooCondition:
-    case BarCondition:
-        ++i;
-        break;
-    default:
-        --i;
-}
-```
-
-[](#indentation-wrap-bool-op) Boolean expressions at the same nesting level that span multiple lines should have their operators on the left side of the line instead of the right side.
-
-###### Right:
-
-```cpp
-return type == Type::SomeType
-    || type == Type::OtherType
-    || (another_condition && !bad_thing);
-```
-
-
-###### Wrong:
-
-```cpp
-return type == Type::SomeType ||
-    type == Type::OtherType ||
-    (another_condition && !bad_thing);
-```
-
-
-### Spacing
-
-[](#spacing-unary-op) Do not place spaces around unary operators.
-
-###### Right:
-
-```cpp
-++i;
-```
-
-
-###### Wrong:
-
-```cpp
-++ i;
-```
-
-[](#spacing-binary-ternary-op) **Do** place spaces around binary and ternary operators.
-
-###### Right:
-
-```cpp
-y = m * x + b;
-f(a, b);
-c = a | b;
-return condition ? 1 : 0;
-```
-
-###### Wrong:
-
-```cpp
-y=m*x+b;
-f(a,b);
-c = a|b;
-return condition ? 1:0;
-```
-
-[](#spacing-for-colon) Place spaces around the colon in a range-based for loop.
-
-###### Right:
-
-```cpp
-Vector<ModuleInfo> modules;
-for (auto& module : modules)
-    register_module(module);
-```
-
-###### Wrong:
-
-```cpp
-Vector<ModuleInfo> modules;
-for (auto& module: modules)
-    register_module(module);
-```
-
-[](#spacing-comma-semicolon) Do not place spaces before comma and semicolon.
-
-###### Right:
-
-```cpp
-for (int i = 0; i < 10; ++i)
-    do_something();
-
-f(a, b);
-```
-
-###### Wrong:
-
-```cpp
-for (int i = 0 ; i < 10 ; ++i)
-    do_something();
-
-f(a , b) ;
-```
-
-[](#spacing-control-paren) Place spaces between control statements and their parentheses.
-
-###### Right:
-
-```cpp
-if (condition)
-    do_it();
-```
-
-###### Wrong:
-
-```cpp
-if(condition)
-    do_it();
-```
-
-[](#spacing-function-paren) Do not place spaces between a function and its parentheses, or between a parenthesis and its content.
-
-###### Right:
-
-```cpp
-f(a, b);
-```
-
-###### Wrong:
-
-```cpp
-f (a, b);
-f( a, b );
-```
-
-[](#spacing-braced-init) When initializing an object, place a space before the leading brace as well as between the braces and their content.
-
-###### Right:
-
-```cpp
-Foo foo { bar };
-```
-
-###### Wrong:
-
-```cpp
-Foo foo{ bar };
-Foo foo {bar};
-```
-
-### Line breaking
-
-[](#linebreaking-multiple-statements) Each statement should get its own line.
-
-###### Right:
-
-```cpp
-++x;
-++y;
-if (condition)
-    do_it();
-```
-
-###### Wrong:
-
-```cpp
-x++; y++;
-if (condition) do_it();
-```
-
-[](#linebreaking-else-braces) An `else` statement should go on the same line as a preceding close brace if one is present, else it should line up with the `if` statement.
-
-###### Right:
-
-```cpp
-if (condition) {
-    ...
-} else {
-    ...
-}
-
-if (condition)
-    do_something();
-else
-    do_something_else();
-
-if (condition) {
-    do_something();
-} else {
-    ...
-}
-```
-
-###### Wrong:
-
-```cpp
-if (condition) {
-    ...
-}
-else {
-    ...
-}
-
-if (condition) do_something(); else do_something_else();
-
-if (condition) do_something(); else {
-    ...
-}
-```
-
-[](#linebreaking-else-if) An `else if` statement should be written as an `if` statement when the prior `if` concludes with a `return` statement.
-
-###### Right:
-
-```cpp
-if (condition) {
-    ...
-    return some_value;
-}
-if (condition) {
-    ...
-}
-```
-
-###### Wrong:
-
-```cpp
-if (condition) {
-    ...
-    return some_value;
-} else if (condition) {
-    ...
-}
-```
-
-### Braces
-
-[](#braces-function) Function definitions: place each brace on its own line.
-
-###### Right:
-
-```cpp
-int main()
-{
-    ...
-}
-```
-
-###### Wrong:
-
-```cpp
-int main() {
-    ...
-}
-```
-
-[](#braces-blocks) Other braces: place the open brace on the line preceding the code block; place the close brace on its own line.
-
-###### Right:
-
-```cpp
-class MyClass {
-    ...
-};
-
-namespace AK {
-    ...
-}
-
-for (int i = 0; i < 10; ++i) {
-    ...
-}
-```
-
-###### Wrong:
-
-```cpp
-class MyClass 
-{
-    ...
-};
-```
-
-[](#braces-one-line) One-line control clauses should not use braces unless comments are included or a single statement spans multiple lines.
-
-###### Right:
-
-```cpp
-if (condition)
-    do_it();
-
-if (condition) {
-    // Some comment.
-    do_it();
-}
-
-if (condition) {
-    my_function(really_long_param1, really_long_param2, ...
-        really_long_param5);
-}
-```
-
-###### Wrong:
-
-```cpp
-if (condition) {
-    do_it();
-}
-
-if (condition)
-    // Some comment.
-    do_it();
-
-if (condition)
-    my_function(really_long_param1, really_long_param2, ...
-        really_long_param5);
-```
-
-[](#braces-empty-block) Control clauses without a body should use empty braces:
-
-###### Right:
-
-```cpp
-for ( ; current; current = current->next) { }
-```
-
-###### Wrong:
-
-```cpp
-for ( ; current; current = current->next);
-```
-
-### Null, false and zero
-
-[](#zero-null) In C++, the null pointer value should be written as `nullptr`. In C, it should be written as `NULL`.
-
-[](#zero-bool) C++ and C `bool` values should be written as `true` and `false`.
-
-[](#zero-comparison) Tests for true/false, null/non-null, and zero/non-zero should all be done without equality comparisons.
-
-###### Right:
-
-```cpp
-if (condition)
-    do_it();
-
-if (!ptr)
-    return;
-
-if (!count)
-    return;
-```
-
-###### Wrong:
-
-```cpp
-if (condition == true)
-    do_it();
-
-if (ptr == nullptr)
-    return;
-
-if (count == 0)
-    return;
-```
-
-### Floating point literals
-
-[](#float-suffixes) Unless required in order to force floating point math, do not append `.0`, `.f` and `.0f` to floating point literals.
-
-###### Right:
-
-```cpp
-const double duration = 60;
-
-void set_diameter(float diameter)
-{
-    radius = diameter / 2;
-}
-
-set_diameter(10);
-
-const int frames_per_second = 12;
-double frame_duration = 1.0 / frames_per_second;
-```
-
-###### Wrong:
-
-```cpp
-const double duration = 60.0;
-
-void set_diameter(float diameter)
-{
-    radius = diameter / 2.f;
-}
-
-set_diameter(10.f);
-
-const int frames_per_second = 12;
-double frame_duration = 1 / frames_per_second; // Integer division.
-```
-
-### Names
-
-[](#names-basic) A combination of CamelCase and snake_case. Use CamelCase (Capitalize the first letter, including all letters in an acronym) in a class, struct, or namespace name. Use snake\_case (all lowercase, with underscores separating words) for variable and function names.
-
-###### Right:
-
-```cpp
-struct Entry;
-size_t buffer_size;
-class FileDescriptor;
-String absolute_path();
-```
-
-###### Wrong:
-
-```cpp
-struct data;
-size_t bufferSize;
-class Filedescriptor;
-String MIME_Type();
-```
-
-[](#names-full-words) Use full words, except in the rare case where an abbreviation would be more canonical and easier to understand.
-
-###### Right:
-
-```cpp
-size_t character_size;
-size_t length;
-short tab_index; // More canonical.
-```
-
-###### Wrong:
-
-```cpp
-size_t char_size;
-size_t len;
-short tabulation_index; // Bizarre.
-```
-
-[](#names-data-members) Data members in C++ classes should be private. Static data members should be prefixed by ""s\_"". Other data members should be prefixed by ""m\_"". Global variables should be prefixed by ""g\_"".
-
-###### Right:
-
-```cpp
-class String {
-public:
-    ...
-
-private:
-    int m_length;
-};
-```
-
-###### Wrong:
-
-```cpp
-class String {
-public:
-    ...
-
-    int length;
-};
-```
-
-[](#names-bool) Precede boolean values with words like ""is"" and ""did"".
-
-###### Right:
-
-```cpp
-bool is_valid;
-bool did_send_data;
-```
-
-###### Wrong:
-
-```cpp
-bool valid;
-bool sent_data;
-```
-
-[](#names-setter-getter) Precede setters with the word ""set"". Use bare words for getters. Setter and getter names should match the names of the variables being set/gotten.
-
-###### Right:
-
-```cpp
-void set_count(int); // Sets m_count.
-int count() const; // Returns m_count.
-```
-
-###### Wrong:
-
-```cpp
-void set_count(int); // Sets m_the_count.
-int get_count() const; // Returns m_the_count.
-```
-
-[](#names-out-argument) Precede getters that return values through out arguments with the word ""get"".
-
-###### Right:
-
-```cpp
-void get_filename_and_inode_id(String&, InodeIdentifier&) const;
-```
-
-###### Wrong:
-
-```cpp
-void filename_and_inode_id(String&, InodeIdentifier&) const;
-```
-
-[](#names-verb) Use descriptive verbs in function names.
-
-###### Right:
-
-```cpp
-bool convert_to_ascii(short*, size_t);
-```
-
-###### Wrong:
-
-```cpp
-bool to_ascii(short*, size_t);
-```
-
-[](#names-if-exists) The getter function for a member variable should not have any suffix or prefix indicating the function can optionally create or initialize the member variable. Prefix the getter function which automatically creates the object with `ensure_` if there is a variant which doesn't.
-
-###### Right:
-
-```cpp
-Inode* inode();
-Inode& ensure_inode();
-```
-
-###### Wrong:
-
-```cpp
-Inode& inode();
-Inode* ensure_inode();
-```
-
-###### Right:
-
-```cpp
-Frame* frame();
-```
-
-###### Wrong:
-
-```cpp
-Frame* ensure_frame();
-```
-
-[](#names-variable-name-in-function-decl) Leave meaningless variable names out of function declarations. A good rule of thumb is if the parameter type name contains the parameter name (without trailing numbers or pluralization), then the parameter name isn't needed. Usually, there should be a parameter name for bools, strings, and numerical types.
-
-###### Right:
-
-```cpp
-void set_count(int);
-
-void do_something(Context*);
-```
-
-###### Wrong:
-
-```cpp
-void set_count(int count);
-
-void do_something(Context* context);
-```
-
-[](#names-enum-to-bool) Prefer enums to bools on function parameters if callers are likely to be passing constants, since named constants are easier to read at the call site. An exception to this rule is a setter function, where the name of the function already makes clear what the boolean is.
-
-###### Right:
-
-```cpp
-do_something(something, AllowFooBar);
-paint_text_with_shadows(context, ..., text_stroke_width > 0, is_horizontal());
-set_resizable(false);
-```
-
-###### Wrong:
-
-```cpp
-do_something(something, false);
-set_resizable(NotResizable);
-```
-
-[](#names-enum-members) Enum members should use InterCaps with an initial capital letter.
-
-[](#names-const-to-define) Prefer `const` to `#define`. Prefer inline functions to macros.
-
-[](#names-define-constants) `#defined` constants should use all uppercase names with words separated by underscores.
-
-[](#header-guards) Use `#pragma once` instead of `#define` and `#ifdef` for header guards.
-
-###### Right:
-
-```cpp
-// MyClass.h
-#pragma once
-```
-
-###### Wrong:
-
-```cpp
-// MyClass.h
-#ifndef MyClass_h
-#define MyClass_h
-```
-
-### Other Punctuation
-
-[](#punctuation-member-init) Constructors for C++ classes should initialize their members using C++ initializer syntax. Each member (and superclass) should be indented on a separate line, with the colon or comma preceding the member on that line. Prefer initialization at member definition whenever possible.
-
-###### Right:
-
-```cpp
-class MyClass {
-    ...
-    Document* m_document { nullptr };
-    int m_my_member { 0 };
-};
-
-MyClass::MyClass(Document* document)
-    : MySuperClass()
-    , m_document(document)
-{
-}
-
-MyOtherClass::MyOtherClass()
-    : MySuperClass()
-{
-}
-```
-
-###### Wrong:
-
-```cpp
-MyClass::MyClass(Document* document) : MySuperClass()
-{
-    m_myMember = 0;
-    m_document = document;
-}
-
-MyClass::MyClass(Document* document) : MySuperClass()
-    : m_my_member(0) // This should be in the header.
-{
-    m_document = document;
-}
-
-MyOtherClass::MyOtherClass() : MySuperClass() {}
-```
-
-[](#punctuation-vector-index) Prefer index or range-for over iterators in Vector iterations for terse, easier-to-read code.
-
-###### Right:
-
-```cpp
-for (auto& child : children)
-    child->do_child_thing();
-```
-
-
-#### OK:
-
-```cpp
-for (int i = 0; i < children.size(); ++i)
-    children[i]->do_child_thing();
-```
-
-###### Wrong:
-
-```cpp
-for (auto it = children.begin(); it != children.end(); ++it)
-    (*it)->do_child_thing();
-```
-
-### Pointers and References
-
-[](#pointers-cpp) **Pointer and reference types in C++ code**
-Both pointer types and reference types should be written with no space between the type name and the `*` or `&`.
-
-###### Right:
-
-```cpp
-GraphicsBitmap* Thingy::bitmap_for(Context context)
-{
-    auto* bitmap = static_cast<SVGStyledElement*>(node());
-    const KCDashArray& dashes = dashArray();
-```
-
-###### Wrong:
-
-```cpp
-Image *SVGStyledElement::doSomething(PaintInfo &paintInfo)
-{
-    SVGStyledElement *element = static_cast<SVGStyledElement *>(node());
-    const KCDashArray &dashes = dashArray();
-```
-
-[](#pointers-out-argument) An out argument of a function should be passed by reference except rare cases where it is optional in which case it should be passed by pointer.
-
-###### Right:
-
-```cpp
-void MyClass::get_some_value(OutArgumentType& out_argument) const
-{
-    out_argument = m_value;
-}
-
-void MyClass::do_something(OutArgumentType* out_argument) const
-{
-    do_the_thing();
-    if (out_argument)
-        *out_argument = m_value;
-}
-```
-
-###### Wrong:
-
-```cpp
-void MyClass::get_some_value(OutArgumentType* outArgument) const
-{
-    *out_argument = m_value;
-}
-```
-
-### #include Statements
-
-[](#include-others) `#include` statements should be in sorted order (case sensitive, as done by the command-line sort tool or an IDE sort selection command). Don't bother to organize them in a logical order.
-
-###### Right:
-
-```cpp
-// HTMLDivElement.cpp
-#include ""Attribute.h""
-#include ""HTMLElement.h""
-#include ""QualifiedName.h""
-```
-
-###### Wrong:
-
-```cpp
-// HTMLDivElement.cpp
-#include ""HTMLElement.h""
-#include ""HTMLDivElement.h""
-#include ""QualifiedName.h""
-#include ""Attribute.h""
-```
-
-### ""using"" Statements
-
-[](#using-ak) In header files in the AK sub-library, however, it is acceptable to use ""using"" declarations at the end of the file to import one or more names in the AK namespace into the global scope.
-
-###### Right:
-
-```cpp
-// AK/Vector.h
-
-namespace AK {
-
-} // namespace AK
-
-using AK::Vector;
-```
-
-###### Wrong:
-
-```cpp
-// AK/Vector.h
-
-namespace AK {
-
-} // namespace AK
-
-using namespace AK;
-```
-
-###### Wrong:
-
-```cpp
-// runtime/Object.h
-
-namespace AK {
-
-} // namespace AK
-
-using AK::SomethingOrOther;
-```
-
-[](#using-in-cpp) In C++ implementation files, do not use ""using"" declarations of any kind to import names in the standard template library. Directly qualify the names at the point they're used instead.
-
-###### Right:
-
-```cpp
-// File.cpp
-
-std::swap(a, b);
-c = std::numeric_limits<int>::max()
-```
-
-###### Wrong:
-
-```cpp
-// File.cpp
-
-using std::swap;
-swap(a, b);
-```
-
-###### Wrong:
-
-```cpp
-// File.cpp
-
-using namespace std;
-swap(a, b);
-```
-
-### Types
-
-[](#types-unsigned) Omit ""int"" when using ""unsigned"" modifier. Do not use ""signed"" modifier. Use ""int"" by itself instead.
-
-###### Right:
-
-```cpp
-unsigned a;
-int b;
-```
-
-###### Wrong:
-
-```cpp
-unsigned int a; // Doesn't omit ""int"".
-signed b; // Uses ""signed"" instead of ""int"".
-signed int c; // Doesn't omit ""signed"".
-```
-
-### Classes
-
-[](#classes-explicit) Use a constructor to do an implicit conversion when the argument is reasonably thought of as a type conversion and the type conversion is fast. Otherwise, use the explicit keyword or a function returning the type. This only applies to single argument constructors.
-
-###### Right:
-
-```cpp
-class LargeInt {
-public:
-    LargeInt(int);
-...
-
-class Vector {
-public:
-    explicit Vector(int size); // Not a type conversion.
-    Vector create(Array); // Costly conversion.
-...
-
-```
-
-###### Wrong:
-
-```cpp
-class Task {
-public:
-    Task(ExecutionContext&); // Not a type conversion.
-    explicit Task(); // No arguments.
-    explicit Task(ExecutionContext&, Other); // More than one argument.
-...
-```
-
-### Singleton pattern
-
-[](#singleton-static-member) Use a static member function named ""the()"" to access the instance of the singleton.
-
-###### Right:
-
-```cpp
-class UniqueObject {
-public:
-    static UniqueObject& the();
-...
-```
-
-###### Wrong:
-
-```cpp
-class UniqueObject {
-public:
-    static UniqueObject& shared();
-...
-```
-
-###### Wrong:
-
-```cpp
-class UniqueObject {
-...
-};
-
-UniqueObject& my_unique_object(); // Free function.
-```
-
-### Comments
-
-[](#comments-eol) Use only _one_ space before end of line comments and in between sentences in comments.
-
-###### Right:
-
-```cpp
-f(a, b); // This explains why the function call was done. This is another sentence.
-```
-
-###### Wrong:
-
-```cpp
-int i;    // This is a comment with several spaces before it, which is a non-conforming style.
-double f; // This is another comment.  There are two spaces before this sentence which is a non-conforming style.
-```
-
-[](#comments-sentences) Make comments look like sentences by starting with a capital letter and ending with a period (punctation). One exception may be end of line comments like this `if (x == y) // false for NaN`.
-
-[](#comments-fixme) Use FIXME: (without attribution) to denote items that need to be addressed in the future.
-
-###### Right:
-
-```cpp
-draw_jpg(); // FIXME: Make this code handle jpg in addition to the png support.
-```
-
-###### Wrong:
-
-```cpp
-draw_jpg(); // FIXME(joe): Make this code handle jpg in addition to the png support.
-```
-
-```cpp
-draw_jpg(); // TODO: Make this code handle jpg in addition to the png support.
-```
-
-### Overriding Virtual Methods
-
-[](#override-methods) The declaration of a virtual method inside a class must be declared with the `virtual` keyword. All subclasses of that class must either specify the `override` keyword when overriding the virtual method or the `final` keyword when overriding the virtual method and requiring that no further subclasses can override it.
-
-###### Right:
-
-```cpp
-class Person {
-public:
-    virtual String description() { ... };
-}
-
-class Student : public Person {
-public:
-    virtual String description() override { ... }; // This is correct because it only contains the ""override"" keyword to indicate that the method is overridden.
-}
-
-```
-
-```cpp
-class Person {
-public:
-    virtual String description() { ... };
-}
-
-class Student : public Person {
-public:
-    virtual String description() final { ... }; // This is correct because it only contains the ""final"" keyword to indicate that the method is overridden and that no subclasses of ""Student"" can override ""description"".
-}
-
-```
-
-###### Wrong:
-
-```cpp
-class Person {
-public:
-    virtual String description() { ... };
-}
-
-class Student : public Person {
-public:
-    String description() override { ... }; // This is incorrect because it uses only the ""override"" keywords to indicate that the method is virtual. Instead, it should use both the ""virtual"" and ""override"" keywords.
-}
-```
-
-```cpp
-class Person {
-public:
-    virtual String description() { ... };
-}
-
-class Student : public Person {
-public:
-    String description() final { ... }; // This is incorrect because it uses only the ""final"" keywords to indicate that the method is virtual and final. Instead, it should use both the ""virtual"" and ""final"" keywords.
-}
-```
-
-```cpp
-class Person {
-public:
-    virtual String description() { ... };
-}
-
-class Student : public Person {
-public:
-    virtual String description() { ... }; // This is incorrect because it uses the ""virtual"" keyword to indicate that the method is overridden.
-}
-```
-"
3a44011cd4b82aa5bea64e7993900d51cbd9bce2,2021-06-10 00:05:32,Ali Mohammad Pur,libwasm: Implement sign extension instructions,False,Implement sign extension instructions,libwasm,"diff --git a/Userland/Libraries/LibWasm/AbstractMachine/BytecodeInterpreter.cpp b/Userland/Libraries/LibWasm/AbstractMachine/BytecodeInterpreter.cpp
index ed295dafd844..e6af12b21b08 100644
--- a/Userland/Libraries/LibWasm/AbstractMachine/BytecodeInterpreter.cpp
+++ b/Userland/Libraries/LibWasm/AbstractMachine/BytecodeInterpreter.cpp
@@ -396,6 +396,13 @@ ALWAYS_INLINE static i32 ctz(T value)
         VERIFY_NOT_REACHED();
 }
 
+template<typename InputT, typename OutputT>
+ALWAYS_INLINE static OutputT extend_signed(InputT value)
+{
+    // Note: C++ will take care of sign extension.
+    return value;
+}
+
 template<typename T>
 ALWAYS_INLINE static T float_max(T lhs, T rhs)
 {
@@ -970,6 +977,16 @@ void BytecodeInterpreter::interpret(Configuration& configuration, InstructionPoi
         UNARY_MAP(i32, bit_cast<float>, float);
     case Instructions::f64_reinterpret_i64.value():
         UNARY_MAP(i64, bit_cast<double>, double);
+    case Instructions::i32_extend8_s.value():
+        UNARY_MAP(i32, (extend_signed<i8, i32>), i32);
+    case Instructions::i32_extend16_s.value():
+        UNARY_MAP(i32, (extend_signed<i16, i32>), i32);
+    case Instructions::i64_extend8_s.value():
+        UNARY_MAP(i64, (extend_signed<i8, i64>), i64);
+    case Instructions::i64_extend16_s.value():
+        UNARY_MAP(i64, (extend_signed<i16, i64>), i64);
+    case Instructions::i64_extend32_s.value():
+        UNARY_MAP(i64, (extend_signed<i32, i64>), i64);
     case Instructions::i32_trunc_sat_f32_s.value():
     case Instructions::i32_trunc_sat_f32_u.value():
     case Instructions::i32_trunc_sat_f64_s.value():
@@ -988,11 +1005,6 @@ void BytecodeInterpreter::interpret(Configuration& configuration, InstructionPoi
     case Instructions::table_grow.value():
     case Instructions::table_size.value():
     case Instructions::table_fill.value():
-    case Instructions::i32_extend8_s.value():
-    case Instructions::i32_extend16_s.value():
-    case Instructions::i64_extend8_s.value():
-    case Instructions::i64_extend16_s.value():
-    case Instructions::i64_extend32_s.value():
     default:
     unimplemented:;
         dbgln(""Instruction '{}' not implemented"", instruction_name(instruction.opcode()));"
91ed6125fd333293ba2f294b6a92a675da233441,2022-09-06 03:57:09,Andreas Kling,libweb: Add Bindings::LegacyPlatformObject base class,False,Add Bindings::LegacyPlatformObject base class,libweb,"diff --git a/Userland/Libraries/LibWeb/Bindings/LegacyPlatformObject.cpp b/Userland/Libraries/LibWeb/Bindings/LegacyPlatformObject.cpp
new file mode 100644
index 000000000000..ef146e315b1a
--- /dev/null
+++ b/Userland/Libraries/LibWeb/Bindings/LegacyPlatformObject.cpp
@@ -0,0 +1,321 @@
+/*
+ * Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibJS/Runtime/GlobalObject.h>
+#include <LibWeb/Bindings/ExceptionOrUtils.h>
+#include <LibWeb/Bindings/LegacyPlatformObject.h>
+
+namespace Web::Bindings {
+
+LegacyPlatformObject::LegacyPlatformObject(JS::Object& prototype)
+    : PlatformObject(prototype)
+{
+}
+
+LegacyPlatformObject::~LegacyPlatformObject() = default;
+
+JS::ThrowCompletionOr<bool> LegacyPlatformObject::is_named_property_exposed_on_object(JS::PropertyKey const& property_key) const
+{
+    [[maybe_unused]] auto& vm = this->vm();
+
+    // The spec doesn't say anything about the type of the property name here.
+    // Numbers can be converted to a string, which is fine and what other engines do.
+    // However, since a symbol cannot be converted to a string, it cannot be a supported property name. Return early if it's a symbol.
+    if (property_key.is_symbol())
+        return false;
+
+    // 1. If P is not a supported property name of O, then return false.
+    // NOTE: This is in it's own variable to enforce the type.
+    // FIXME: Can this throw?
+    Vector<String> supported_property_names = this->supported_property_names();
+    auto property_key_string = property_key.to_string();
+    if (!supported_property_names.contains_slow(property_key_string))
+        return false;
+
+    // 2. If O has an own property named P, then return false.
+    // NOTE: This has to be done manually instead of using Object::has_own_property, as that would use the overridden internal_get_own_property.
+    auto own_property_named_p = MUST(Object::internal_get_own_property(property_key));
+
+    if (own_property_named_p.has_value())
+        return false;
+
+    // NOTE: Step 3 is not here as the interface doesn't have the LegacyOverrideBuiltIns extended attribute.
+    // 4. Let prototype be O.[[GetPrototypeOf]]().
+    auto* prototype = TRY(internal_get_prototype_of());
+
+    // 5. While prototype is not null:
+    while (prototype) {
+        // FIXME: 1. If prototype is not a named properties object, and prototype has an own property named P, then return false.
+        //           (It currently does not check for named property objects)
+        bool prototype_has_own_property_named_p = TRY(prototype->has_own_property(property_key));
+        if (prototype_has_own_property_named_p)
+            return false;
+
+        // 2. Set prototype to prototype.[[GetPrototypeOf]]().
+        prototype = TRY(prototype->internal_get_prototype_of());
+    }
+
+    // 6. Return true.
+    return true;
+}
+
+JS::ThrowCompletionOr<Optional<JS::PropertyDescriptor>> LegacyPlatformObject::legacy_platform_object_get_own_property_for_get_own_property_slot(JS::PropertyKey const& property_name) const
+{
+
+    [[maybe_unused]] auto& global_object = this->global_object();
+
+    if (property_name.is_number()) {
+        // 1. Let index be the result of calling ToUint32(P).
+        u32 index = property_name.as_number();
+
+        // 2. If index is a supported property index, then:
+        // FIXME: Can this throw?
+        if (is_supported_property_index(index)) {
+
+            auto value = TRY(throw_dom_exception_if_needed(global_object, [&] { return item_value(index); }));
+
+            // 5. Let desc be a newly created Property Descriptor with no fields.
+            JS::PropertyDescriptor descriptor;
+
+            // 6. Set desc.[[Value]] to the result of converting value to an ECMAScript value.
+            descriptor.value = value;
+
+            descriptor.writable = false;
+
+            // 8. Set desc.[[Enumerable]] and desc.[[Configurable]] to true.
+            descriptor.enumerable = true;
+            descriptor.configurable = true;
+
+            // 9. Return desc.
+            return descriptor;
+        }
+
+        // 3. Set ignoreNamedProps to true.
+        return TRY(Object::internal_get_own_property(property_name));
+    }
+
+    // 1. If the result of running the named property visibility algorithm with property name P and object O is true, then:
+    if (TRY(is_named_property_exposed_on_object(property_name))) {
+        // FIXME: It's unfortunate that this is done twice, once in is_named_property_exposed_on_object and here.
+        auto property_name_string = property_name.to_string();
+
+        auto value = TRY(throw_dom_exception_if_needed(global_object, [&] { return named_item_value(property_name_string); }));
+
+        // 5. Let desc be a newly created Property Descriptor with no fields.
+        JS::PropertyDescriptor descriptor;
+
+        // 6. Set desc.[[Value]] to the result of converting value to an ECMAScript value.
+        descriptor.value = value;
+
+        descriptor.writable = false;
+
+        descriptor.enumerable = false;
+
+        // 9. Set desc.[[Configurable]] to true.
+        descriptor.configurable = true;
+
+        // 10. Return desc.
+        return descriptor;
+    }
+
+    return TRY(Object::internal_get_own_property(property_name));
+}
+
+JS::ThrowCompletionOr<Optional<JS::PropertyDescriptor>> LegacyPlatformObject::legacy_platform_object_get_own_property_for_set_slot(JS::PropertyKey const& property_name) const
+{
+    if (!property_name.is_number())
+        return TRY(Object::internal_get_own_property(property_name));
+
+    // 1. Let index be the result of calling ToUint32(P).
+    u32 index = property_name.as_number();
+
+    // 2. If index is a supported property index, then:
+    // FIXME: Can this throw?
+    if (is_supported_property_index(index)) {
+
+        auto value = TRY(throw_dom_exception_if_needed(global_object(), [&] { return item_value(index); }));
+
+        // 5. Let desc be a newly created Property Descriptor with no fields.
+        JS::PropertyDescriptor descriptor;
+
+        // 6. Set desc.[[Value]] to the result of converting value to an ECMAScript value.
+        descriptor.value = value;
+
+        descriptor.writable = false;
+
+        // 8. Set desc.[[Enumerable]] and desc.[[Configurable]] to true.
+        descriptor.enumerable = true;
+        descriptor.configurable = true;
+
+        // 9. Return desc.
+        return descriptor;
+    }
+
+    // 3. Set ignoreNamedProps to true.
+    return TRY(Object::internal_get_own_property(property_name));
+}
+
+JS::ThrowCompletionOr<Optional<JS::PropertyDescriptor>> LegacyPlatformObject::internal_get_own_property(JS::PropertyKey const& property_name) const
+{
+    // 1. Return LegacyPlatformObjectGetOwnProperty(O, P, false).
+    return TRY(legacy_platform_object_get_own_property_for_get_own_property_slot(property_name));
+}
+
+JS::ThrowCompletionOr<bool> LegacyPlatformObject::internal_set(JS::PropertyKey const& property_name, JS::Value value, JS::Value receiver)
+{
+    [[maybe_unused]] auto& global_object = this->global_object();
+
+    // 2. Let ownDesc be LegacyPlatformObjectGetOwnProperty(O, P, true).
+    auto own_descriptor = TRY(legacy_platform_object_get_own_property_for_set_slot(property_name));
+
+    // 3. Perform ? OrdinarySetWithOwnDescriptor(O, P, V, Receiver, ownDesc).
+    // NOTE: The spec says ""perform"" instead of ""return"", meaning nothing will be returned on this path according to the spec, which isn't possible to do.
+    //       Let's treat it as though it says ""return"" instead of ""perform"".
+    return ordinary_set_with_own_descriptor(property_name, value, receiver, own_descriptor);
+}
+
+JS::ThrowCompletionOr<bool> LegacyPlatformObject::internal_define_own_property(JS::PropertyKey const& property_name, JS::PropertyDescriptor const& property_descriptor)
+{
+    [[maybe_unused]] auto& vm = this->vm();
+    [[maybe_unused]] auto& global_object = this->global_object();
+
+    if (property_name.is_number()) {
+        // 1. If the result of calling IsDataDescriptor(Desc) is false, then return false.
+        if (!property_descriptor.is_data_descriptor())
+            return false;
+
+        return false;
+    }
+
+    if (property_name.is_string()) {
+        auto& property_name_as_string = property_name.as_string();
+
+        // 1. Let creating be true if P is not a supported property name, and false otherwise.
+        // NOTE: This is in it's own variable to enforce the type.
+        // FIXME: Can this throw?
+        Vector<String> supported_property_names = this->supported_property_names();
+        [[maybe_unused]] bool creating = !supported_property_names.contains_slow(property_name_as_string);
+
+        // NOTE: This has to be done manually instead of using Object::has_own_property, as that would use the overridden internal_get_own_property.
+        auto own_property_named_p = TRY(Object::internal_get_own_property(property_name));
+
+        if (!own_property_named_p.has_value()) {
+
+            if (!creating)
+                return false;
+        }
+    }
+
+    // property_descriptor is a const&, thus we need to create a copy here to set [[Configurable]]
+    JS::PropertyDescriptor descriptor_copy(property_descriptor);
+    descriptor_copy.configurable = true;
+
+    // 4. Return OrdinaryDefineOwnProperty(O, P, Desc).
+    return Object::internal_define_own_property(property_name, descriptor_copy);
+}
+
+JS::ThrowCompletionOr<bool> LegacyPlatformObject::internal_delete(JS::PropertyKey const& property_name)
+{
+    [[maybe_unused]] auto& global_object = this->global_object();
+
+    if (property_name.is_number()) {
+        // 1. Let index be the result of calling ToUint32(P).
+        u32 index = property_name.as_number();
+
+        // 2. If index is not a supported property index, then return true.
+        // FIXME: Can this throw?
+        if (!is_supported_property_index(index))
+            return true;
+
+        // 3. Return false.
+        return false;
+    }
+
+    if (TRY(is_named_property_exposed_on_object(property_name))) {
+
+        return false;
+    }
+
+    // 3. If O has an own property with name P, then:
+    auto own_property_named_p_descriptor = TRY(Object::internal_get_own_property(property_name));
+
+    if (own_property_named_p_descriptor.has_value()) {
+        // 1. If the property is not configurable, then return false.
+        // 2. Otherwise, remove the property from O.
+        if (*own_property_named_p_descriptor->configurable)
+            storage_delete(property_name);
+        else
+            return false;
+    }
+
+    // 4. Return true.
+    return true;
+}
+
+JS::ThrowCompletionOr<bool> LegacyPlatformObject::internal_prevent_extensions()
+{
+    // 1. Return false.
+    return false;
+}
+
+JS::ThrowCompletionOr<JS::MarkedVector<JS::Value>> LegacyPlatformObject::internal_own_property_keys() const
+{
+    auto& vm = this->vm();
+
+    // 1. Let keys be a new empty list of ECMAScript String and Symbol values.
+    JS::MarkedVector<JS::Value> keys { heap() };
+
+    for (u64 index = 0; index <= NumericLimits<u32>::max(); ++index) {
+        if (is_supported_property_index(index))
+            keys.append(js_string(vm, String::number(index)));
+        else
+            break;
+    }
+
+    for (auto& named_property : supported_property_names()) {
+        if (TRY(is_named_property_exposed_on_object(named_property)))
+            keys.append(js_string(vm, named_property));
+    }
+
+    // 4. For each P of O’s own property keys that is a String, in ascending chronological order of property creation, append P to keys.
+    for (auto& it : shape().property_table_ordered()) {
+        if (it.key.is_string())
+            keys.append(it.key.to_value(vm));
+    }
+
+    // 5. For each P of O’s own property keys that is a Symbol, in ascending chronological order of property creation, append P to keys.
+    for (auto& it : shape().property_table_ordered()) {
+        if (it.key.is_symbol())
+            keys.append(it.key.to_value(vm));
+    }
+
+    // FIXME: 6. Assert: keys has no duplicate items.
+
+    // 7. Return keys.
+    return { move(keys) };
+}
+
+JS::Value LegacyPlatformObject::item_value(size_t) const
+{
+    return JS::js_undefined();
+}
+
+JS::Value LegacyPlatformObject::named_item_value(FlyString const&) const
+{
+    return JS::js_undefined();
+}
+
+Vector<String> LegacyPlatformObject::supported_property_names() const
+{
+    return {};
+}
+
+bool LegacyPlatformObject::is_supported_property_index(u32) const
+{
+    return false;
+}
+
+}
diff --git a/Userland/Libraries/LibWeb/Bindings/LegacyPlatformObject.h b/Userland/Libraries/LibWeb/Bindings/LegacyPlatformObject.h
new file mode 100644
index 000000000000..c8969d438e60
--- /dev/null
+++ b/Userland/Libraries/LibWeb/Bindings/LegacyPlatformObject.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibWeb/Bindings/PlatformObject.h>
+
+namespace Web::Bindings {
+
+// https://webidl.spec.whatwg.org/#dfn-legacy-platform-object
+class LegacyPlatformObject : public PlatformObject {
+    JS_OBJECT(LegacyPlatformObject, PlatformObject);
+
+public:
+    virtual ~LegacyPlatformObject() override;
+
+    virtual JS::ThrowCompletionOr<Optional<JS::PropertyDescriptor>> internal_get_own_property(JS::PropertyKey const&) const override;
+    virtual JS::ThrowCompletionOr<bool> internal_set(JS::PropertyKey const&, JS::Value, JS::Value) override;
+    virtual JS::ThrowCompletionOr<bool> internal_define_own_property(JS::PropertyKey const&, JS::PropertyDescriptor const&) override;
+    virtual JS::ThrowCompletionOr<bool> internal_delete(JS::PropertyKey const&) override;
+    virtual JS::ThrowCompletionOr<bool> internal_prevent_extensions() override;
+    virtual JS::ThrowCompletionOr<JS::MarkedVector<JS::Value>> internal_own_property_keys() const override;
+
+    JS::ThrowCompletionOr<bool> is_named_property_exposed_on_object(JS::PropertyKey const&) const;
+    JS::ThrowCompletionOr<Optional<JS::PropertyDescriptor>> legacy_platform_object_get_own_property_for_get_own_property_slot(JS::PropertyKey const&) const;
+    JS::ThrowCompletionOr<Optional<JS::PropertyDescriptor>> legacy_platform_object_get_own_property_for_set_slot(JS::PropertyKey const&) const;
+
+    virtual JS::Value item_value(size_t index) const;
+    virtual JS::Value named_item_value(FlyString const& name) const;
+    virtual Vector<String> supported_property_names() const;
+    virtual bool is_supported_property_index(u32) const;
+
+protected:
+    explicit LegacyPlatformObject(JS::Object& prototype);
+};
+
+}
diff --git a/Userland/Libraries/LibWeb/CMakeLists.txt b/Userland/Libraries/LibWeb/CMakeLists.txt
index 5c4b549abd5f..4983599a2c3a 100644
--- a/Userland/Libraries/LibWeb/CMakeLists.txt
+++ b/Userland/Libraries/LibWeb/CMakeLists.txt
@@ -11,6 +11,7 @@ set(SOURCES
     Bindings/EventWrapperFactory.cpp
     Bindings/IDLAbstractOperations.cpp
     Bindings/ImageConstructor.cpp
+    Bindings/LegacyPlatformObject.cpp
     Bindings/LocationConstructor.cpp
     Bindings/LocationObject.cpp
     Bindings/MainThreadVM.cpp"
cacc3ee85708bf8b1c588e7588f300b05cfa7b38,2021-12-21 23:24:36,Ali Mohammad Pur,libc: Switch to using east const in wchar.cpp,False,Switch to using east const in wchar.cpp,libc,"diff --git a/Userland/Libraries/LibC/wchar.cpp b/Userland/Libraries/LibC/wchar.cpp
index abe6d1609cd7..f6a08dc7193a 100644
--- a/Userland/Libraries/LibC/wchar.cpp
+++ b/Userland/Libraries/LibC/wchar.cpp
@@ -45,7 +45,7 @@ static unsigned int mbstate_expected_bytes(mbstate_t* state)
 
 extern ""C"" {
 
-size_t wcslen(const wchar_t* str)
+size_t wcslen(wchar_t const* str)
 {
     size_t len = 0;
     while (*(str++))
@@ -53,7 +53,7 @@ size_t wcslen(const wchar_t* str)
     return len;
 }
 
-wchar_t* wcscpy(wchar_t* dest, const wchar_t* src)
+wchar_t* wcscpy(wchar_t* dest, wchar_t const* src)
 {
     wchar_t* original_dest = dest;
     while ((*dest++ = *src++) != '\0')
@@ -62,7 +62,7 @@ wchar_t* wcscpy(wchar_t* dest, const wchar_t* src)
 }
 
 // https://pubs.opengroup.org/onlinepubs/9699919799/functions/wcsdup.html
-wchar_t* wcsdup(const wchar_t* str)
+wchar_t* wcsdup(wchar_t const* str)
 {
     size_t length = wcslen(str);
     wchar_t* new_str = (wchar_t*)malloc(sizeof(wchar_t) * (length + 1));
@@ -75,7 +75,7 @@ wchar_t* wcsdup(const wchar_t* str)
     return wcscpy(new_str, str);
 }
 
-wchar_t* wcsncpy(wchar_t* dest, const wchar_t* src, size_t num)
+wchar_t* wcsncpy(wchar_t* dest, wchar_t const* src, size_t num)
 {
     wchar_t* original_dest = dest;
     while (((*dest++ = *src++) != '\0') && ((size_t)(dest - original_dest) < num))
@@ -83,7 +83,7 @@ wchar_t* wcsncpy(wchar_t* dest, const wchar_t* src, size_t num)
     return original_dest;
 }
 
-size_t wcslcpy(wchar_t* dest, const wchar_t* src, size_t n)
+size_t wcslcpy(wchar_t* dest, wchar_t const* src, size_t n)
 {
     size_t i;
     for (i = 0; i + 1 < n && src[i] != L'\0'; ++i)
@@ -95,28 +95,28 @@ size_t wcslcpy(wchar_t* dest, const wchar_t* src, size_t n)
     return i;
 }
 
-int wcscmp(const wchar_t* s1, const wchar_t* s2)
+int wcscmp(wchar_t const* s1, wchar_t const* s2)
 {
     while (*s1 == *s2++)
         if (*s1++ == 0)
             return 0;
-    return *(const wchar_t*)s1 - *(const wchar_t*)--s2;
+    return *(wchar_t const*)s1 - *(wchar_t const*)--s2;
 }
 
-int wcsncmp(const wchar_t* s1, const wchar_t* s2, size_t n)
+int wcsncmp(wchar_t const* s1, wchar_t const* s2, size_t n)
 {
     if (!n)
         return 0;
     do {
         if (*s1 != *s2++)
-            return *(const wchar_t*)s1 - *(const wchar_t*)--s2;
+            return *(wchar_t const*)s1 - *(wchar_t const*)--s2;
         if (*s1++ == 0)
             break;
     } while (--n);
     return 0;
 }
 
-wchar_t* wcschr(const wchar_t* str, int c)
+wchar_t* wcschr(wchar_t const* str, int c)
 {
     wchar_t ch = c;
     for (;; ++str) {
@@ -127,7 +127,7 @@ wchar_t* wcschr(const wchar_t* str, int c)
     }
 }
 
-wchar_t* wcsrchr(const wchar_t* str, wchar_t wc)
+wchar_t* wcsrchr(wchar_t const* str, wchar_t wc)
 {
     wchar_t* last = nullptr;
     wchar_t c;
@@ -138,7 +138,7 @@ wchar_t* wcsrchr(const wchar_t* str, wchar_t wc)
     return last;
 }
 
-wchar_t* wcscat(wchar_t* dest, const wchar_t* src)
+wchar_t* wcscat(wchar_t* dest, wchar_t const* src)
 {
     size_t dest_length = wcslen(dest);
     size_t i;
@@ -148,7 +148,7 @@ wchar_t* wcscat(wchar_t* dest, const wchar_t* src)
     return dest;
 }
 
-wchar_t* wcsncat(wchar_t* dest, const wchar_t* src, size_t n)
+wchar_t* wcsncat(wchar_t* dest, wchar_t const* src, size_t n)
 {
     size_t dest_length = wcslen(dest);
     size_t i;
@@ -158,7 +158,7 @@ wchar_t* wcsncat(wchar_t* dest, const wchar_t* src, size_t n)
     return dest;
 }
 
-wchar_t* wcstok(wchar_t* str, const wchar_t* delim, wchar_t** ptr)
+wchar_t* wcstok(wchar_t* str, wchar_t const* delim, wchar_t** ptr)
 {
     wchar_t* used_str = str;
     if (!used_str) {
@@ -203,13 +203,13 @@ wchar_t* wcstok(wchar_t* str, const wchar_t* delim, wchar_t** ptr)
     return &used_str[token_start];
 }
 
-long wcstol(const wchar_t*, wchar_t**, int)
+long wcstol(wchar_t const*, wchar_t**, int)
 {
     dbgln(""FIXME: Implement wcstol()"");
     TODO();
 }
 
-long long wcstoll(const wchar_t*, wchar_t**, int)
+long long wcstoll(wchar_t const*, wchar_t**, int)
 {
     dbgln(""FIXME: Implement wcstoll()"");
     TODO();
@@ -229,7 +229,7 @@ wint_t btowc(int c)
     return c;
 }
 
-size_t mbrtowc(wchar_t* pwc, const char* s, size_t n, mbstate_t* state)
+size_t mbrtowc(wchar_t* pwc, char const* s, size_t n, mbstate_t* state)
 {
     static mbstate_t _anonymous_state = {};
 
@@ -314,7 +314,7 @@ size_t mbrtowc(wchar_t* pwc, const char* s, size_t n, mbstate_t* state)
     return consumed_bytes;
 }
 
-size_t mbrlen(const char* s, size_t n, mbstate_t* ps)
+size_t mbrlen(char const* s, size_t n, mbstate_t* ps)
 {
     static mbstate_t anonymous_state = {};
 
@@ -342,14 +342,14 @@ size_t wcrtomb(char* s, wchar_t wc, mbstate_t*)
     }
 }
 
-int wcscoll(const wchar_t* ws1, const wchar_t* ws2)
+int wcscoll(wchar_t const* ws1, wchar_t const* ws2)
 {
     // TODO: Actually implement a sensible sort order for this,
     // because right now we are doing what LC_COLLATE=C would do.
     return wcscmp(ws1, ws2);
 }
 
-size_t wcsxfrm(wchar_t* dest, const wchar_t* src, size_t n)
+size_t wcsxfrm(wchar_t* dest, wchar_t const* src, size_t n)
 {
     // TODO: This needs to be changed when wcscoll is not just doing wcscmp
     return wcslcpy(dest, src, n);
@@ -363,7 +363,7 @@ int wctob(wint_t c)
     return static_cast<unsigned char>(c);
 }
 
-int mbsinit(const mbstate_t* state)
+int mbsinit(mbstate_t const* state)
 {
     if (!state) {
         return 1;
@@ -376,9 +376,9 @@ int mbsinit(const mbstate_t* state)
     return 1;
 }
 
-wchar_t* wcspbrk(const wchar_t* wcs, const wchar_t* accept)
+wchar_t* wcspbrk(wchar_t const* wcs, wchar_t const* accept)
 {
-    for (const wchar_t* cur = accept; *cur; cur++) {
+    for (wchar_t const* cur = accept; *cur; cur++) {
         wchar_t* res = wcschr(wcs, *cur);
         if (res)
             return res;
@@ -387,7 +387,7 @@ wchar_t* wcspbrk(const wchar_t* wcs, const wchar_t* accept)
     return nullptr;
 }
 
-wchar_t* wcsstr(const wchar_t* haystack, const wchar_t* needle)
+wchar_t* wcsstr(wchar_t const* haystack, wchar_t const* needle)
 {
     size_t nlen = wcslen(needle);
 
@@ -407,7 +407,7 @@ wchar_t* wcsstr(const wchar_t* haystack, const wchar_t* needle)
     return nullptr;
 }
 
-wchar_t* wmemchr(const wchar_t* s, wchar_t c, size_t n)
+wchar_t* wmemchr(wchar_t const* s, wchar_t c, size_t n)
 {
     for (size_t i = 0; i < n; i++) {
         if (s[i] == c)
@@ -417,7 +417,7 @@ wchar_t* wmemchr(const wchar_t* s, wchar_t c, size_t n)
     return nullptr;
 }
 
-wchar_t* wmemcpy(wchar_t* dest, const wchar_t* src, size_t n)
+wchar_t* wmemcpy(wchar_t* dest, wchar_t const* src, size_t n)
 {
     for (size_t i = 0; i < n; i++)
         dest[i] = src[i];
@@ -434,7 +434,7 @@ wchar_t* wmemset(wchar_t* wcs, wchar_t wc, size_t n)
     return wcs;
 }
 
-wchar_t* wmemmove(wchar_t* dest, const wchar_t* src, size_t n)
+wchar_t* wmemmove(wchar_t* dest, wchar_t const* src, size_t n)
 {
     if (dest > src) {
         for (size_t i = 1; i <= n; i++) {
@@ -449,37 +449,37 @@ wchar_t* wmemmove(wchar_t* dest, const wchar_t* src, size_t n)
     return dest;
 }
 
-unsigned long wcstoul(const wchar_t*, wchar_t**, int)
+unsigned long wcstoul(wchar_t const*, wchar_t**, int)
 {
     dbgln(""TODO: Implement wcstoul()"");
     TODO();
 }
 
-unsigned long long wcstoull(const wchar_t*, wchar_t**, int)
+unsigned long long wcstoull(wchar_t const*, wchar_t**, int)
 {
     dbgln(""TODO: Implement wcstoull()"");
     TODO();
 }
 
-float wcstof(const wchar_t*, wchar_t**)
+float wcstof(wchar_t const*, wchar_t**)
 {
     dbgln(""TODO: Implement wcstof()"");
     TODO();
 }
 
-double wcstod(const wchar_t*, wchar_t**)
+double wcstod(wchar_t const*, wchar_t**)
 {
     dbgln(""TODO: Implement wcstod()"");
     TODO();
 }
 
-long double wcstold(const wchar_t*, wchar_t**)
+long double wcstold(wchar_t const*, wchar_t**)
 {
     dbgln(""TODO: Implement wcstold()"");
     TODO();
 }
 
-int swprintf(wchar_t*, size_t, const wchar_t*, ...)
+int swprintf(wchar_t*, size_t, wchar_t const*, ...)
 {
     dbgln(""TODO: Implement swprintf()"");
     TODO();
@@ -502,7 +502,7 @@ int wcwidth(wchar_t wc)
     return 1;
 }
 
-size_t wcsnrtombs(char* dest, const wchar_t** src, size_t nwc, size_t len, mbstate_t* ps)
+size_t wcsnrtombs(char* dest, wchar_t const** src, size_t nwc, size_t len, mbstate_t* ps)
 {
     static mbstate_t _anonymous_state = {};
 
@@ -548,7 +548,7 @@ size_t wcsnrtombs(char* dest, const wchar_t** src, size_t nwc, size_t len, mbsta
     return written;
 }
 
-size_t mbsnrtowcs(wchar_t* dst, const char** src, size_t nms, size_t len, mbstate_t* ps)
+size_t mbsnrtowcs(wchar_t* dst, char const** src, size_t nms, size_t len, mbstate_t* ps)
 {
     static mbstate_t _anonymous_state = {};
 
@@ -596,7 +596,7 @@ size_t mbsnrtowcs(wchar_t* dst, const char** src, size_t nms, size_t len, mbstat
     return written;
 }
 
-int wmemcmp(const wchar_t* s1, const wchar_t* s2, size_t n)
+int wmemcmp(wchar_t const* s1, wchar_t const* s2, size_t n)
 {
     while (n-- > 0) {
         if (*s1++ != *s2++)
@@ -605,7 +605,7 @@ int wmemcmp(const wchar_t* s1, const wchar_t* s2, size_t n)
     return 0;
 }
 
-size_t wcsrtombs(char* dest, const wchar_t** src, size_t len, mbstate_t* ps)
+size_t wcsrtombs(char* dest, wchar_t const** src, size_t len, mbstate_t* ps)
 {
     static mbstate_t anonymous_state = {};
 
@@ -616,7 +616,7 @@ size_t wcsrtombs(char* dest, const wchar_t** src, size_t len, mbstate_t* ps)
     return wcsnrtombs(dest, src, SIZE_MAX, len, ps);
 }
 
-size_t mbsrtowcs(wchar_t* dst, const char** src, size_t len, mbstate_t* ps)
+size_t mbsrtowcs(wchar_t* dst, char const** src, size_t len, mbstate_t* ps)
 {
     static mbstate_t anonymous_state = {};"
e9c76d339be1fed6071362a392028edbf4395aa4,2022-02-18 00:25:27,Ali Mohammad Pur,meta: Split and refactor the WrapperGenerator a bit,False,Split and refactor the WrapperGenerator a bit,meta,"diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/CMakeLists.txt b/Meta/Lagom/Tools/CodeGenerators/LibWeb/CMakeLists.txt
index 3c0c5d1f307a..a757779a7696 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/CMakeLists.txt
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/CMakeLists.txt
@@ -4,5 +4,5 @@ lagom_tool(Generate_CSS_PropertyID_h   SOURCES Generate_CSS_PropertyID_h.cpp)
 lagom_tool(Generate_CSS_PropertyID_cpp SOURCES Generate_CSS_PropertyID_cpp.cpp)
 lagom_tool(Generate_CSS_ValueID_h      SOURCES Generate_CSS_ValueID_h.cpp)
 lagom_tool(Generate_CSS_ValueID_cpp    SOURCES Generate_CSS_ValueID_cpp.cpp)
-lagom_tool(WrapperGenerator            SOURCES WrapperGenerator.cpp)
-target_compile_options(WrapperGenerator PUBLIC -g)
+
+add_subdirectory(WrapperGenerator)
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/CMakeLists.txt b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/CMakeLists.txt
new file mode 100644
index 000000000000..5c97766e2dce
--- /dev/null
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/CMakeLists.txt
@@ -0,0 +1,8 @@
+set(SOURCES """")
+
+lagom_tool(WrapperGenerator SOURCES
+    IDLGenerators.cpp
+    IDLParser.cpp
+    main.cpp)
+
+target_compile_options(WrapperGenerator PUBLIC -g)
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp
similarity index 75%
rename from Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator.cpp
rename to Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp
index a4c9486ff8f4..3c3934108178 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp
@@ -2,1149 +2,18 @@
  * Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
  * Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
+ * Copyright (c) 2022, Ali Mohammad Pur <mpfard@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <AK/ByteBuffer.h>
-#include <AK/Debug.h>
-#include <AK/GenericLexer.h>
-#include <AK/HashMap.h>
+#include ""IDLTypes.h""
 #include <AK/LexicalPath.h>
-#include <AK/NonnullOwnPtrVector.h>
-#include <AK/OwnPtr.h>
 #include <AK/Queue.h>
-#include <AK/QuickSort.h>
-#include <AK/SourceGenerator.h>
-#include <AK/StringBuilder.h>
-#include <AK/Tuple.h>
-#include <LibCore/ArgsParser.h>
-#include <LibCore/File.h>
-#include <ctype.h>
 
-namespace IDL {
-struct Interface;
-}
-
-static Vector<StringView> s_header_search_paths;
-
-static String make_input_acceptable_cpp(String const& input)
-{
-    if (input.is_one_of(""class"", ""template"", ""for"", ""default"", ""char"", ""namespace"", ""delete"")) {
-        StringBuilder builder;
-        builder.append(input);
-        builder.append('_');
-        return builder.to_string();
-    }
-
-    return input.replace(""-"", ""_"");
-}
-
-static String convert_enumeration_value_to_cpp_enum_member(String const& value, HashTable<String>& names_already_seen)
-{
-    StringBuilder builder;
-    GenericLexer lexer { value };
-
-    while (!lexer.is_eof()) {
-        lexer.ignore_while([](auto c) { return isspace(c) || c == '-' || c == '_'; });
-        auto word = lexer.consume_while([](auto c) { return isalnum(c); });
-        if (!word.is_empty()) {
-            builder.append(word.to_titlecase_string());
-        } else {
-            auto non_alnum_string = lexer.consume_while([](auto c) { return !isalnum(c); });
-            if (!non_alnum_string.is_empty())
-                builder.append(""_"");
-        }
-    }
-
-    if (builder.is_empty())
-        builder.append(""Empty"");
-
-    while (names_already_seen.contains(builder.string_view()))
-        builder.append('_');
-
-    names_already_seen.set(builder.string_view());
-    return builder.build();
-}
-
-[[noreturn]] static void report_parsing_error(StringView message, StringView filename, StringView input, size_t offset)
-{
-    // FIXME: Spaghetti code ahead.
-
-    size_t lineno = 1;
-    size_t colno = 1;
-    size_t start_line = 0;
-    size_t line_length = 0;
-    for (size_t index = 0; index < input.length(); ++index) {
-        if (offset == index)
-            colno = index - start_line + 1;
-
-        if (input[index] == '\n') {
-            if (index >= offset)
-                break;
-
-            start_line = index + 1;
-            line_length = 0;
-            ++lineno;
-        } else {
-            ++line_length;
-        }
-    }
-
-    StringBuilder error_message;
-    error_message.appendff(""{}\n"", input.substring_view(start_line, line_length));
-    for (size_t i = 0; i < colno - 1; ++i)
-        error_message.append(' ');
-    error_message.append(""\033[1;31m^\n"");
-    error_message.appendff(""{}:{}: error: {}\033[0m\n"", filename, lineno, message);
-
-    warnln(""{}"", error_message.string_view());
-    exit(EXIT_FAILURE);
-}
-
-static void generate_include_for_wrapper(auto& generator, auto& wrapper_name)
-{
-    auto wrapper_generator = generator.fork();
-    wrapper_generator.set(""wrapper_class"", wrapper_name);
-    // FIXME: These may or may not exist, because REASONS.
-    wrapper_generator.append(R""~~~(
-#if __has_include(<LibWeb/Bindings/@wrapper_class@.h>)
-#   include <LibWeb/Bindings/@wrapper_class@.h>
-#endif
-#if __has_include(<LibWeb/Bindings/@wrapper_class@Factory.h>)
-#   include <LibWeb/Bindings/@wrapper_class@Factory.h>
-#endif
-)~~~"");
-}
-
-static void generate_include_for_iterator(auto& generator, auto& iterator_path, auto& iterator_name)
-{
-    auto iterator_generator = generator.fork();
-    iterator_generator.set(""iterator_class.path"", iterator_path);
-    iterator_generator.set(""iterator_class.name"", iterator_name);
-    // FIXME: These may or may not exist, because REASONS.
-    iterator_generator.append(R""~~~(
-//#if __has_include(<LibWeb/@iterator_class.path@.h>)
-#   include <LibWeb/@iterator_class.path@.h>
-//#endif
-#if __has_include(<LibWeb/@iterator_class.path@Factory.h>)
-#   include <LibWeb/@iterator_class.path@Factory.h>
-#endif
-#if __has_include(<LibWeb/Bindings/@iterator_class.name@Wrapper.h>)
-#   include <LibWeb/Bindings/@iterator_class.name@Wrapper.h>
-#endif
-#if __has_include(<LibWeb/Bindings/@iterator_class.name@WrapperFactory.h>)
-#   include <LibWeb/Bindings/@iterator_class.name@WrapperFactory.h>
-#endif
-)~~~"");
-}
-
-static void generate_include_for(auto& generator, auto& path)
-{
-    auto forked_generator = generator.fork();
-    auto path_string = path;
-    for (auto& search_path : s_header_search_paths) {
-        if (!path.starts_with(search_path))
-            continue;
-        auto relative_path = LexicalPath::relative_path(path, search_path);
-        if (relative_path.length() < path_string.length())
-            path_string = relative_path;
-    }
-
-    LexicalPath include_path { path_string };
-    forked_generator.set(""include.path"", String::formatted(""{}/{}.h"", include_path.dirname(), include_path.title()));
-    forked_generator.append(R""~~~(
-#include <@include.path@>
-)~~~"");
-}
-
-static void emit_includes_for_all_imports(auto& interface, auto& generator, bool is_header, bool is_iterator = false)
-{
-    Queue<RemoveCVReference<decltype(interface)> const*> interfaces;
-    HashTable<String> paths_imported;
-    if (is_header)
-        paths_imported.set(interface.module_own_path);
-
-    interfaces.enqueue(&interface);
-
-    while (!interfaces.is_empty()) {
-        auto interface = interfaces.dequeue();
-        if (paths_imported.contains(interface->module_own_path))
-            continue;
-
-        paths_imported.set(interface->module_own_path);
-        for (auto& imported_interface : interface->imported_modules) {
-            if (!paths_imported.contains(imported_interface.module_own_path))
-                interfaces.enqueue(&imported_interface);
-        }
-
-        generate_include_for(generator, interface->module_own_path);
-
-        if (is_iterator) {
-            auto iterator_name = String::formatted(""{}Iterator"", interface->name);
-            auto iterator_path = String::formatted(""{}Iterator"", interface->fully_qualified_name.replace(""::"", ""/""));
-            generate_include_for_iterator(generator, iterator_path, iterator_name);
-        }
-
-        if (interface->wrapper_class != ""Wrapper"")
-            generate_include_for_wrapper(generator, interface->wrapper_class);
-    }
-}
-
-namespace IDL {
-
-template<typename FunctionType>
-static size_t get_function_length(FunctionType& function)
-{
-    size_t length = 0;
-    for (auto& parameter : function.parameters) {
-        if (!parameter.optional && !parameter.variadic)
-            length++;
-    }
-    return length;
-}
-
-enum class SequenceStorageType {
-    Vector,       // Used to safely store non-JS values
-    MarkedVector, // Used to safely store JS::Value and anything that inherits JS::Cell, e.g. JS::Object
-};
-
-struct CppType {
-    String name;
-    SequenceStorageType sequence_storage_type;
-};
-
-struct Type : public RefCounted<Type> {
-    Type() = default;
-
-    Type(String name, bool nullable)
-        : name(move(name))
-        , nullable(nullable)
-    {
-    }
-
-    virtual ~Type() = default;
-
-    String name;
-    bool nullable { false };
-    bool is_string() const { return name.is_one_of(""ByteString"", ""CSSOMString"", ""DOMString"", ""USVString""); }
-
-    // https://webidl.spec.whatwg.org/#dfn-integer-type
-    bool is_integer() const { return name.is_one_of(""byte"", ""octet"", ""short"", ""unsigned short"", ""long"", ""unsigned long"", ""long long"", ""unsigned long long""); }
-
-    // https://webidl.spec.whatwg.org/#dfn-numeric-type
-    bool is_numeric() const { return is_integer() || name.is_one_of(""float"", ""unrestricted float"", ""double"", ""unrestricted double""); }
-};
-
-static CppType idl_type_name_to_cpp_type(Type const& type);
-
-struct UnionType : public Type {
-    UnionType() = default;
-
-    UnionType(String name, bool nullable, NonnullRefPtrVector<Type> member_types)
-        : Type(move(name), nullable)
-        , member_types(move(member_types))
-    {
-    }
-
-    virtual ~UnionType() override = default;
-
-    NonnullRefPtrVector<Type> member_types;
-
-    // https://webidl.spec.whatwg.org/#dfn-flattened-union-member-types
-    NonnullRefPtrVector<Type> flattened_member_types() const
-    {
-        // 1. Let T be the union type.
-
-        // 2. Initialize S to ∅.
-        NonnullRefPtrVector<Type> types;
-
-        // 3. For each member type U of T:
-        for (auto& type : member_types) {
-            // FIXME: 1. If U is an annotated type, then set U to be the inner type of U.
-
-            // 2. If U is a nullable type, then set U to be the inner type of U. (NOTE: Not necessary as nullable is stored with Type and not as a separate struct)
-
-            // 3. If U is a union type, then add to S the flattened member types of U.
-            if (is<UnionType>(type)) {
-                auto& union_member_type = verify_cast<UnionType>(type);
-                types.extend(union_member_type.flattened_member_types());
-            } else {
-                // 4. Otherwise, U is not a union type. Add U to S.
-                types.append(type);
-            }
-        }
-
-        // 4. Return S.
-        return types;
-    }
-
-    // https://webidl.spec.whatwg.org/#dfn-number-of-nullable-member-types
-    size_t number_of_nullable_member_types() const
-    {
-        // 1. Let T be the union type.
-
-        // 2. Initialize n to 0.
-        size_t num_nullable_member_types = 0;
-
-        // 3. For each member type U of T:
-        for (auto& type : member_types) {
-            // 1. If U is a nullable type, then:
-            if (type.nullable) {
-                // 1. Set n to n + 1.
-                ++num_nullable_member_types;
-
-                // 2. Set U to be the inner type of U. (NOTE: Not necessary as nullable is stored with Type and not as a separate struct)
-            }
-
-            // 2. If U is a union type, then:
-            if (is<UnionType>(type)) {
-                auto& union_member_type = verify_cast<UnionType>(type);
-
-                // 1. Let m be the number of nullable member types of U.
-                // 2. Set n to n + m.
-                num_nullable_member_types += union_member_type.number_of_nullable_member_types();
-            }
-        }
-
-        // 4. Return n.
-        return num_nullable_member_types;
-    }
-
-    // https://webidl.spec.whatwg.org/#dfn-includes-a-nullable-type
-    bool includes_nullable_type() const
-    {
-        // -> the type is a union type and its number of nullable member types is 1.
-        return number_of_nullable_member_types() == 1;
-    }
-
-    // -> https://webidl.spec.whatwg.org/#dfn-includes-undefined
-    bool includes_undefined() const
-    {
-        // -> the type is a union type and one of its member types includes undefined.
-        for (auto& type : member_types) {
-            if (is<UnionType>(type)) {
-                auto& union_type = verify_cast<UnionType>(type);
-                if (union_type.includes_undefined())
-                    return true;
-            }
-
-            if (type.name == ""undefined""sv)
-                return true;
-        }
-        return false;
-    }
-
-    String to_variant() const
-    {
-        StringBuilder builder;
-        builder.append(""Variant<"");
-
-        auto flattened_types = flattened_member_types();
-        for (size_t type_index = 0; type_index < flattened_types.size(); ++type_index) {
-            auto& type = flattened_types.at(type_index);
-
-            if (type_index > 0)
-                builder.append("", "");
-
-            auto cpp_type = idl_type_name_to_cpp_type(type);
-            builder.append(cpp_type.name);
-        }
-
-        if (includes_undefined())
-            builder.append("", Empty"");
-
-        builder.append('>');
-        return builder.to_string();
-    }
-};
-
-struct Parameter {
-    NonnullRefPtr<Type> type;
-    String name;
-    bool optional { false };
-    Optional<String> optional_default_value;
-    HashMap<String, String> extended_attributes;
-    bool variadic { false };
-};
-
-struct Function {
-    NonnullRefPtr<Type> return_type;
-    String name;
-    Vector<Parameter> parameters;
-    HashMap<String, String> extended_attributes;
-
-    size_t length() const { return get_function_length(*this); }
-};
-
-struct Constructor {
-    String name;
-    Vector<Parameter> parameters;
-
-    size_t length() const { return get_function_length(*this); }
-};
-
-struct Constant {
-    NonnullRefPtr<Type> type;
-    String name;
-    String value;
-};
-
-struct Attribute {
-    bool readonly { false };
-    NonnullRefPtr<Type> type;
-    String name;
-    HashMap<String, String> extended_attributes;
-
-    // Added for convenience after parsing
-    String getter_callback_name;
-    String setter_callback_name;
-};
-
-struct DictionaryMember {
-    bool required { false };
-    NonnullRefPtr<Type> type;
-    String name;
-    HashMap<String, String> extended_attributes;
-    Optional<String> default_value;
-};
-
-struct Dictionary {
-    String parent_name;
-    Vector<DictionaryMember> members;
-};
-
-struct Enumeration {
-    HashTable<String> values;
-    HashMap<String, String> translated_cpp_names;
-    String first_member;
-    bool is_original_definition { true };
-};
-
-struct Interface;
-
-struct ParameterizedType : public Type {
-    ParameterizedType() = default;
-
-    ParameterizedType(String name, bool nullable, NonnullRefPtrVector<Type> parameters)
-        : Type(move(name), nullable)
-        , parameters(move(parameters))
-    {
-    }
-
-    virtual ~ParameterizedType() override = default;
-
-    NonnullRefPtrVector<Type> parameters;
-
-    void generate_sequence_from_iterable(SourceGenerator& generator, String const& cpp_name, String const& iterable_cpp_name, String const& iterator_method_cpp_name, IDL::Interface const&, size_t recursion_depth) const;
-};
-
-struct Interface {
-    String name;
-    String parent_name;
-
-    HashMap<String, String> extended_attributes;
-
-    Vector<Attribute> attributes;
-    Vector<Constant> constants;
-    Vector<Constructor> constructors;
-    Vector<Function> functions;
-    Vector<Function> static_functions;
-    bool has_stringifier { false };
-    Optional<String> stringifier_attribute;
-    bool has_unscopable_member { false };
-
-    Optional<NonnullRefPtr<Type>> value_iterator_type;
-    Optional<Tuple<NonnullRefPtr<Type>, NonnullRefPtr<Type>>> pair_iterator_types;
-
-    Optional<Function> named_property_getter;
-    Optional<Function> named_property_setter;
-
-    Optional<Function> indexed_property_getter;
-    Optional<Function> indexed_property_setter;
-
-    Optional<Function> named_property_deleter;
-
-    HashMap<String, Dictionary> dictionaries;
-    HashMap<String, Enumeration> enumerations;
-
-    // Added for convenience after parsing
-    String wrapper_class;
-    String wrapper_base_class;
-    String fully_qualified_name;
-    String constructor_class;
-    String prototype_class;
-    String prototype_base_class;
-
-    String module_own_path;
-    HashTable<String> imported_paths;
-    NonnullOwnPtrVector<Interface> imported_modules;
-
-    // https://webidl.spec.whatwg.org/#dfn-support-indexed-properties
-    bool supports_indexed_properties() const { return indexed_property_getter.has_value(); }
-
-    // https://webidl.spec.whatwg.org/#dfn-support-named-properties
-    bool supports_named_properties() const { return named_property_getter.has_value(); }
-
-    // https://webidl.spec.whatwg.org/#dfn-legacy-platform-object
-    bool is_legacy_platform_object() const { return !extended_attributes.contains(""Global"") && (supports_indexed_properties() || supports_named_properties()); }
-};
-
-HashTable<String> s_all_imported_paths;
-static NonnullOwnPtr<Interface> parse_interface(StringView filename, StringView input, StringView import_base_path)
-{
-    auto this_module = Core::File::real_path_for(filename);
-    s_all_imported_paths.set(this_module);
-
-    auto interface = make<Interface>();
-    interface->module_own_path = this_module;
-
-    GenericLexer lexer(input);
-
-    auto assert_specific = [&](char ch) {
-        if (!lexer.consume_specific(ch))
-            report_parsing_error(String::formatted(""expected '{}'"", ch), filename, input, lexer.tell());
-    };
-
-    auto consume_whitespace = [&] {
-        bool consumed = true;
-        while (consumed) {
-            consumed = lexer.consume_while([](char ch) { return isspace(ch); }).length() > 0;
-
-            if (lexer.consume_specific(""//"")) {
-                lexer.consume_until('\n');
-                lexer.ignore();
-                consumed = true;
-            }
-        }
-    };
-
-    auto assert_string = [&](StringView expected) {
-        if (!lexer.consume_specific(expected))
-            report_parsing_error(String::formatted(""expected '{}'"", expected), filename, input, lexer.tell());
-    };
-
-    auto parse_extended_attributes = [&] {
-        HashMap<String, String> extended_attributes;
-        for (;;) {
-            consume_whitespace();
-            if (lexer.consume_specific(']'))
-                break;
-            auto name = lexer.consume_until([](auto ch) { return ch == ']' || ch == '=' || ch == ','; });
-            if (lexer.consume_specific('=')) {
-                auto value = lexer.consume_until([](auto ch) { return ch == ']' || ch == ','; });
-                extended_attributes.set(name, value);
-            } else {
-                extended_attributes.set(name, {});
-            }
-            lexer.consume_specific(',');
-        }
-        consume_whitespace();
-        return extended_attributes;
-    };
-
-    auto resolve_import = [&](auto path) -> Optional<NonnullOwnPtr<Interface>> {
-        auto include_path = LexicalPath::join(import_base_path, path).string();
-        if (!Core::File::exists(include_path))
-            report_parsing_error(String::formatted(""{}: No such file or directory"", include_path), filename, input, lexer.tell());
-
-        auto real_path = Core::File::real_path_for(include_path);
-        if (s_all_imported_paths.contains(real_path))
-            return {};
-
-        s_all_imported_paths.set(real_path);
-
-        auto file_or_error = Core::File::open(real_path, Core::OpenMode::ReadOnly);
-        if (file_or_error.is_error())
-            report_parsing_error(String::formatted(""Failed to open {}: {}"", real_path, file_or_error.error()), filename, input, lexer.tell());
-
-        auto data = file_or_error.value()->read_all();
-        return IDL::parse_interface(real_path, data, import_base_path);
-    };
-
-    NonnullOwnPtrVector<Interface> imports;
-    while (lexer.consume_specific(""#import"")) {
-        consume_whitespace();
-        assert_specific('<');
-        auto path = lexer.consume_until('>');
-        lexer.ignore();
-        auto maybe_interface = resolve_import(path);
-        if (maybe_interface.has_value()) {
-            for (auto& entry : maybe_interface.value()->imported_paths)
-                s_all_imported_paths.set(entry);
-            imports.append(maybe_interface.release_value());
-        }
-        consume_whitespace();
-    }
-    interface->imported_paths = s_all_imported_paths;
-
-    if (lexer.consume_specific('['))
-        interface->extended_attributes = parse_extended_attributes();
-
-    AK::Function<NonnullRefPtr<Type>()> parse_type = [&]() -> NonnullRefPtr<Type> {
-        if (lexer.consume_specific('(')) {
-            NonnullRefPtrVector<Type> union_member_types;
-            union_member_types.append(parse_type());
-            consume_whitespace();
-            assert_string(""or"");
-            consume_whitespace();
-            union_member_types.append(parse_type());
-            consume_whitespace();
-
-            while (lexer.consume_specific(""or"")) {
-                consume_whitespace();
-                union_member_types.append(parse_type());
-                consume_whitespace();
-            }
-
-            assert_specific(')');
-
-            bool nullable = lexer.consume_specific('?');
-
-            return adopt_ref(*new UnionType("""", nullable, move(union_member_types)));
-        }
-
-        auto consume_name = [&] {
-            return lexer.consume_until([](auto ch) { return !isalnum(ch) && ch != '_'; });
-        };
-        bool unsigned_ = lexer.consume_specific(""unsigned"");
-        if (unsigned_)
-            consume_whitespace();
-        auto name = consume_name();
-        NonnullRefPtrVector<Type> parameters;
-        bool is_parameterized_type = false;
-        if (lexer.consume_specific('<')) {
-            is_parameterized_type = true;
-            parameters.append(parse_type());
-            while (lexer.consume_specific(',')) {
-                consume_whitespace();
-                parameters.append(parse_type());
-            }
-            lexer.consume_specific('>');
-        }
-        auto nullable = lexer.consume_specific('?');
-        StringBuilder builder;
-        if (unsigned_)
-            builder.append(""unsigned "");
-        builder.append(name);
-
-        if (is_parameterized_type)
-            return adopt_ref(*new ParameterizedType(builder.to_string(), nullable, move(parameters)));
-
-        return adopt_ref(*new Type(builder.to_string(), nullable));
-    };
-
-    auto parse_attribute = [&](HashMap<String, String>& extended_attributes) {
-        bool readonly = lexer.consume_specific(""readonly"");
-        if (readonly)
-            consume_whitespace();
-
-        if (lexer.consume_specific(""attribute""))
-            consume_whitespace();
-
-        auto type = parse_type();
-        consume_whitespace();
-        auto name = lexer.consume_until([](auto ch) { return isspace(ch) || ch == ';'; });
-        consume_whitespace();
-
-        assert_specific(';');
-
-        auto name_as_string = name.to_string();
-        auto getter_callback_name = String::formatted(""{}_getter"", name_as_string.to_snakecase());
-        auto setter_callback_name = String::formatted(""{}_setter"", name_as_string.to_snakecase());
-
-        Attribute attribute {
-            readonly,
-            move(type),
-            move(name_as_string),
-            move(extended_attributes),
-            move(getter_callback_name),
-            move(setter_callback_name),
-        };
-        interface->attributes.append(move(attribute));
-    };
-
-    auto parse_constant = [&] {
-        lexer.consume_specific(""const"");
-        consume_whitespace();
-
-        auto type = parse_type();
-        consume_whitespace();
-        auto name = lexer.consume_until([](auto ch) { return isspace(ch) || ch == '='; });
-        consume_whitespace();
-        lexer.consume_specific('=');
-        consume_whitespace();
-        auto value = lexer.consume_while([](auto ch) { return !isspace(ch) && ch != ';'; });
-        consume_whitespace();
-        assert_specific(';');
-
-        Constant constant {
-            move(type),
-            move(name),
-            move(value),
-        };
-        interface->constants.append(move(constant));
-    };
-
-    auto parse_parameters = [&] {
-        consume_whitespace();
-        Vector<Parameter> parameters;
-        for (;;) {
-            if (lexer.next_is(')'))
-                break;
-            HashMap<String, String> extended_attributes;
-            if (lexer.consume_specific('['))
-                extended_attributes = parse_extended_attributes();
-            bool optional = lexer.consume_specific(""optional"");
-            if (optional)
-                consume_whitespace();
-            auto type = parse_type();
-            bool variadic = lexer.consume_specific(""...""sv);
-            consume_whitespace();
-            auto name = lexer.consume_until([](auto ch) { return isspace(ch) || ch == ',' || ch == ')' || ch == '='; });
-            Parameter parameter = { move(type), move(name), optional, {}, extended_attributes, variadic };
-            consume_whitespace();
-            if (variadic) {
-                // Variadic parameters must be last and do not have default values.
-                parameters.append(move(parameter));
-                break;
-            }
-            if (lexer.next_is(')')) {
-                parameters.append(move(parameter));
-                break;
-            }
-            if (lexer.next_is('=') && optional) {
-                assert_specific('=');
-                consume_whitespace();
-                auto default_value = lexer.consume_until([](auto ch) { return isspace(ch) || ch == ',' || ch == ')'; });
-                parameter.optional_default_value = default_value;
-            }
-            parameters.append(move(parameter));
-            if (lexer.next_is(')'))
-                break;
-            assert_specific(',');
-            consume_whitespace();
-        }
-        return parameters;
-    };
-
-    // https://webidl.spec.whatwg.org/#dfn-special-operation
-    // A special operation is a getter, setter or deleter.
-    enum class IsSpecialOperation {
-        No,
-        Yes,
-    };
-
-    auto parse_function = [&](HashMap<String, String>& extended_attributes, IsSpecialOperation is_special_operation = IsSpecialOperation::No) {
-        bool static_ = false;
-        if (lexer.consume_specific(""static"")) {
-            static_ = true;
-            consume_whitespace();
-        }
-
-        auto return_type = parse_type();
-        consume_whitespace();
-        auto name = lexer.consume_until([](auto ch) { return isspace(ch) || ch == '('; });
-        consume_whitespace();
-        assert_specific('(');
-        auto parameters = parse_parameters();
-        assert_specific(')');
-        consume_whitespace();
-        assert_specific(';');
-
-        Function function { move(return_type), name, move(parameters), move(extended_attributes) };
-
-        // ""Defining a special operation with an identifier is equivalent to separating the special operation out into its own declaration without an identifier.""
-        if (is_special_operation == IsSpecialOperation::No || (is_special_operation == IsSpecialOperation::Yes && !name.is_empty())) {
-            if (!static_)
-                interface->functions.append(function);
-            else
-                interface->static_functions.append(function);
-        }
-
-        return function;
-    };
-
-    auto parse_constructor = [&] {
-        assert_string(""constructor"");
-        consume_whitespace();
-        assert_specific('(');
-        auto parameters = parse_parameters();
-        assert_specific(')');
-        consume_whitespace();
-        assert_specific(';');
-
-        interface->constructors.append(Constructor { interface->name, move(parameters) });
-    };
-
-    auto parse_stringifier = [&](HashMap<String, String>& extended_attributes) {
-        assert_string(""stringifier"");
-        consume_whitespace();
-        interface->has_stringifier = true;
-        if (lexer.next_is(""readonly"") || lexer.next_is(""attribute"")) {
-            parse_attribute(extended_attributes);
-            interface->stringifier_attribute = interface->attributes.last().name;
-        } else {
-            assert_specific(';');
-        }
-    };
-
-    auto parse_iterable = [&]() {
-        assert_string(""iterable"");
-        assert_specific('<');
-        auto first_type = parse_type();
-        if (lexer.next_is(',')) {
-            if (interface->supports_indexed_properties())
-                report_parsing_error(""Interfaces with a pair iterator must not supported indexed properties."", filename, input, lexer.tell());
-
-            assert_specific(',');
-            consume_whitespace();
-            auto second_type = parse_type();
-            interface->pair_iterator_types = Tuple { move(first_type), move(second_type) };
-        } else {
-            if (!interface->supports_indexed_properties())
-                report_parsing_error(""Interfaces with a value iterator must supported indexed properties."", filename, input, lexer.tell());
-
-            interface->value_iterator_type = move(first_type);
-        }
-        assert_specific('>');
-        assert_specific(';');
-    };
-
-    auto parse_getter = [&](HashMap<String, String>& extended_attributes) {
-        assert_string(""getter"");
-        consume_whitespace();
-        auto function = parse_function(extended_attributes, IsSpecialOperation::Yes);
-
-        if (function.parameters.size() != 1)
-            report_parsing_error(String::formatted(""Named/indexed property getters must have only 1 parameter, got {} parameters."", function.parameters.size()), filename, input, lexer.tell());
-
-        auto& identifier = function.parameters.first();
-
-        if (identifier.type->nullable)
-            report_parsing_error(""identifier's type must not be nullable."", filename, input, lexer.tell());
-
-        if (identifier.optional)
-            report_parsing_error(""identifier must not be optional."", filename, input, lexer.tell());
-
-        // FIXME: Disallow variadic functions once they're supported.
-
-        if (identifier.type->name == ""DOMString"") {
-            if (interface->named_property_getter.has_value())
-                report_parsing_error(""An interface can only have one named property getter."", filename, input, lexer.tell());
-
-            interface->named_property_getter = move(function);
-        } else if (identifier.type->name == ""unsigned long"") {
-            if (interface->indexed_property_getter.has_value())
-                report_parsing_error(""An interface can only have one indexed property getter."", filename, input, lexer.tell());
-
-            interface->indexed_property_getter = move(function);
-        } else {
-            report_parsing_error(String::formatted(""Named/indexed property getter's identifier's type must be either 'DOMString' or 'unsigned long', got '{}'."", identifier.type->name), filename, input, lexer.tell());
-        }
-    };
-
-    auto parse_setter = [&](HashMap<String, String>& extended_attributes) {
-        assert_string(""setter"");
-        consume_whitespace();
-        auto function = parse_function(extended_attributes, IsSpecialOperation::Yes);
-
-        if (function.parameters.size() != 2)
-            report_parsing_error(String::formatted(""Named/indexed property setters must have only 2 parameters, got {} parameter(s)."", function.parameters.size()), filename, input, lexer.tell());
-
-        auto& identifier = function.parameters.first();
-
-        if (identifier.type->nullable)
-            report_parsing_error(""identifier's type must not be nullable."", filename, input, lexer.tell());
-
-        if (identifier.optional)
-            report_parsing_error(""identifier must not be optional."", filename, input, lexer.tell());
-
-        // FIXME: Disallow variadic functions once they're supported.
-
-        if (identifier.type->name == ""DOMString"") {
-            if (interface->named_property_setter.has_value())
-                report_parsing_error(""An interface can only have one named property setter."", filename, input, lexer.tell());
-
-            if (!interface->named_property_getter.has_value())
-                report_parsing_error(""A named property setter must be accompanied by a named property getter."", filename, input, lexer.tell());
-
-            interface->named_property_setter = move(function);
-        } else if (identifier.type->name == ""unsigned long"") {
-            if (interface->indexed_property_setter.has_value())
-                report_parsing_error(""An interface can only have one indexed property setter."", filename, input, lexer.tell());
-
-            if (!interface->indexed_property_getter.has_value())
-                report_parsing_error(""An indexed property setter must be accompanied by an indexed property getter."", filename, input, lexer.tell());
-
-            interface->indexed_property_setter = move(function);
-        } else {
-            report_parsing_error(String::formatted(""Named/indexed property setter's identifier's type must be either 'DOMString' or 'unsigned long', got '{}'."", identifier.type->name), filename, input, lexer.tell());
-        }
-    };
-
-    auto parse_deleter = [&](HashMap<String, String>& extended_attributes) {
-        assert_string(""deleter"");
-        consume_whitespace();
-        auto function = parse_function(extended_attributes, IsSpecialOperation::Yes);
-
-        if (function.parameters.size() != 1)
-            report_parsing_error(String::formatted(""Named property deleter must have only 1 parameter, got {} parameters."", function.parameters.size()), filename, input, lexer.tell());
-
-        auto& identifier = function.parameters.first();
-
-        if (identifier.type->nullable)
-            report_parsing_error(""identifier's type must not be nullable."", filename, input, lexer.tell());
-
-        if (identifier.optional)
-            report_parsing_error(""identifier must not be optional."", filename, input, lexer.tell());
-
-        // FIXME: Disallow variadic functions once they're supported.
-
-        if (identifier.type->name == ""DOMString"") {
-            if (interface->named_property_deleter.has_value())
-                report_parsing_error(""An interface can only have one named property deleter."", filename, input, lexer.tell());
-
-            if (!interface->named_property_getter.has_value())
-                report_parsing_error(""A named property deleter must be accompanied by a named property getter."", filename, input, lexer.tell());
-
-            interface->named_property_deleter = move(function);
-        } else {
-            report_parsing_error(String::formatted(""Named property deleter's identifier's type must be 'DOMString', got '{}'."", identifier.type->name), filename, input, lexer.tell());
-        }
-    };
-
-    auto parse_non_interface_entities = [&](bool allow_interface) {
-        auto parse_dictionary = [&] {
-            assert_string(""dictionary"");
-            consume_whitespace();
-
-            Dictionary dictionary {};
-
-            auto name = lexer.consume_until([](auto ch) { return isspace(ch); });
-            consume_whitespace();
-
-            if (lexer.consume_specific(':')) {
-                consume_whitespace();
-                dictionary.parent_name = lexer.consume_until([](auto ch) { return isspace(ch); });
-                consume_whitespace();
-            }
-            assert_specific('{');
-
-            for (;;) {
-                consume_whitespace();
-
-                if (lexer.consume_specific('}')) {
-                    consume_whitespace();
-                    assert_specific(';');
-                    break;
-                }
-
-                bool required = false;
-                HashMap<String, String> extended_attributes;
-
-                if (lexer.consume_specific(""required"")) {
-                    required = true;
-                    consume_whitespace();
-                    if (lexer.consume_specific('['))
-                        extended_attributes = parse_extended_attributes();
-                }
-
-                auto type = parse_type();
-                consume_whitespace();
-
-                auto name = lexer.consume_until([](auto ch) { return isspace(ch) || ch == ';'; });
-                consume_whitespace();
-
-                Optional<StringView> default_value;
-
-                if (lexer.consume_specific('=')) {
-                    VERIFY(!required);
-                    consume_whitespace();
-                    default_value = lexer.consume_until([](auto ch) { return isspace(ch) || ch == ';'; });
-                    consume_whitespace();
-                }
-
-                assert_specific(';');
-
-                DictionaryMember member {
-                    required,
-                    move(type),
-                    name,
-                    move(extended_attributes),
-                    Optional<String>(move(default_value)),
-                };
-                dictionary.members.append(move(member));
-            }
-
-            // dictionary members need to be evaluated in lexicographical order
-            quick_sort(dictionary.members, [&](auto& one, auto& two) {
-                return one.name < two.name;
-            });
-
-            interface->dictionaries.set(name, move(dictionary));
-            consume_whitespace();
-        };
-
-        auto parse_enumeration = [&] {
-            assert_string(""enum"");
-            consume_whitespace();
-
-            Enumeration enumeration {};
-
-            auto name = lexer.consume_until([](auto ch) { return isspace(ch); });
-            consume_whitespace();
-
-            assert_specific('{');
-
-            bool first = true;
-            for (; !lexer.is_eof();) {
-                consume_whitespace();
-                if (lexer.next_is('}'))
-                    break;
-                if (!first) {
-                    assert_specific(',');
-                    consume_whitespace();
-                }
-
-                assert_specific('""');
-                auto string = lexer.consume_until('""');
-                assert_specific('""');
-                consume_whitespace();
-
-                if (enumeration.values.contains(string))
-                    report_parsing_error(String::formatted(""Enumeration {} contains duplicate member '{}'"", name, string), filename, input, lexer.tell());
-                else
-                    enumeration.values.set(string);
-
-                if (first)
-                    enumeration.first_member = move(string);
-
-                first = false;
-            }
-
-            consume_whitespace();
-            assert_specific('}');
-            assert_specific(';');
-
-            HashTable<String> names_already_seen;
-            for (auto& entry : enumeration.values)
-                enumeration.translated_cpp_names.set(entry, convert_enumeration_value_to_cpp_enum_member(entry, names_already_seen));
-
-            interface->enumerations.set(name, move(enumeration));
-            consume_whitespace();
-        };
-
-        while (!lexer.is_eof()) {
-            if (lexer.next_is(""dictionary""))
-                parse_dictionary();
-            else if (lexer.next_is(""enum""))
-                parse_enumeration();
-            else if ((allow_interface && !lexer.next_is(""interface"")) || !allow_interface)
-                report_parsing_error(""expected 'enum' or 'dictionary'"", filename, input, lexer.tell());
-            else
-                break;
-        }
-    };
-
-    parse_non_interface_entities(true);
-
-    if (lexer.consume_specific(""interface"")) {
-        consume_whitespace();
-        interface->name = lexer.consume_until([](auto ch) { return isspace(ch); });
-        consume_whitespace();
-        if (lexer.consume_specific(':')) {
-            consume_whitespace();
-            interface->parent_name = lexer.consume_until([](auto ch) { return isspace(ch); });
-            consume_whitespace();
-        }
-        assert_specific('{');
-
-        for (;;) {
-            HashMap<String, String> extended_attributes;
-
-            consume_whitespace();
-
-            if (lexer.consume_specific('}')) {
-                consume_whitespace();
-                assert_specific(';');
-                break;
-            }
-
-            if (lexer.consume_specific('[')) {
-                extended_attributes = parse_extended_attributes();
-                if (!interface->has_unscopable_member && extended_attributes.contains(""Unscopable""))
-                    interface->has_unscopable_member = true;
-            }
-
-            if (lexer.next_is(""constructor"")) {
-                parse_constructor();
-                continue;
-            }
-
-            if (lexer.next_is(""const"")) {
-                parse_constant();
-                continue;
-            }
-
-            if (lexer.next_is(""stringifier"")) {
-                parse_stringifier(extended_attributes);
-                continue;
-            }
-
-            if (lexer.next_is(""iterable"")) {
-                parse_iterable();
-                continue;
-            }
-
-            if (lexer.next_is(""readonly"") || lexer.next_is(""attribute"")) {
-                parse_attribute(extended_attributes);
-                continue;
-            }
-
-            if (lexer.next_is(""getter"")) {
-                parse_getter(extended_attributes);
-                continue;
-            }
-
-            if (lexer.next_is(""setter"")) {
-                parse_setter(extended_attributes);
-                continue;
-            }
-
-            if (lexer.next_is(""deleter"")) {
-                parse_deleter(extended_attributes);
-                continue;
-            }
-
-            parse_function(extended_attributes);
-        }
-
-        interface->wrapper_class = String::formatted(""{}Wrapper"", interface->name);
-        interface->wrapper_base_class = String::formatted(""{}Wrapper"", interface->parent_name.is_empty() ? String::empty() : interface->parent_name);
-        interface->constructor_class = String::formatted(""{}Constructor"", interface->name);
-        interface->prototype_class = String::formatted(""{}Prototype"", interface->name);
-        interface->prototype_base_class = String::formatted(""{}Prototype"", interface->parent_name.is_empty() ? ""Object"" : interface->parent_name);
-        consume_whitespace();
-    }
-
-    parse_non_interface_entities(false);
-
-    for (auto& import : imports) {
-        // FIXME: Instead of copying every imported entity into the current interface, query imports directly
-        for (auto& dictionary : import.dictionaries)
-            interface->dictionaries.set(dictionary.key, dictionary.value);
-
-        for (auto& enumeration : import.enumerations) {
-            auto enumeration_copy = enumeration.value;
-            enumeration_copy.is_original_definition = false;
-            interface->enumerations.set(enumeration.key, move(enumeration_copy));
-        }
-    }
-    interface->imported_modules = move(imports);
+Vector<StringView> s_header_search_paths;
 
-    return interface;
-}
+namespace IDL {
 
 static bool is_wrappable_type(Type const& type)
 {
@@ -1191,7 +60,7 @@ static StringView sequence_storage_type_to_cpp_storage_type_name(SequenceStorage
     }
 }
 
-static CppType idl_type_name_to_cpp_type(Type const& type)
+CppType idl_type_name_to_cpp_type(Type const& type)
 {
     if (is_wrappable_type(type)) {
         if (type.nullable)
@@ -1252,155 +121,105 @@ static CppType idl_type_name_to_cpp_type(Type const& type)
     TODO();
 }
 
-}
-
-static void generate_constructor_header(IDL::Interface const&);
-static void generate_constructor_implementation(IDL::Interface const&);
-static void generate_prototype_header(IDL::Interface const&);
-static void generate_prototype_implementation(IDL::Interface const&);
-static void generate_header(IDL::Interface const&);
-static void generate_implementation(IDL::Interface const&);
-static void generate_iterator_prototype_header(IDL::Interface const&);
-static void generate_iterator_prototype_implementation(IDL::Interface const&);
-static void generate_iterator_header(IDL::Interface const&);
-static void generate_iterator_implementation(IDL::Interface const&);
-
-int main(int argc, char** argv)
+static String make_input_acceptable_cpp(String const& input)
 {
-    Core::ArgsParser args_parser;
-    StringView path = nullptr;
-    StringView import_base_path = nullptr;
-    bool header_mode = false;
-    bool implementation_mode = false;
-    bool constructor_header_mode = false;
-    bool constructor_implementation_mode = false;
-    bool prototype_header_mode = false;
-    bool prototype_implementation_mode = false;
-    bool iterator_header_mode = false;
-    bool iterator_implementation_mode = false;
-    bool iterator_prototype_header_mode = false;
-    bool iterator_prototype_implementation_mode = false;
-    args_parser.add_option(header_mode, ""Generate the wrapper .h file"", ""header"", 'H');
-    args_parser.add_option(implementation_mode, ""Generate the wrapper .cpp file"", ""implementation"", 'I');
-    args_parser.add_option(constructor_header_mode, ""Generate the constructor .h file"", ""constructor-header"", 'C');
-    args_parser.add_option(constructor_implementation_mode, ""Generate the constructor .cpp file"", ""constructor-implementation"", 'O');
-    args_parser.add_option(prototype_header_mode, ""Generate the prototype .h file"", ""prototype-header"", 'P');
-    args_parser.add_option(prototype_implementation_mode, ""Generate the prototype .cpp file"", ""prototype-implementation"", 'R');
-    args_parser.add_option(iterator_header_mode, ""Generate the iterator wrapper .h file"", ""iterator-header"", 0);
-    args_parser.add_option(iterator_implementation_mode, ""Generate the iterator wrapper .cpp file"", ""iterator-implementation"", 0);
-    args_parser.add_option(iterator_prototype_header_mode, ""Generate the iterator prototype .h file"", ""iterator-prototype-header"", 0);
-    args_parser.add_option(iterator_prototype_implementation_mode, ""Generate the iterator prototype .cpp file"", ""iterator-prototype-implementation"", 0);
-    args_parser.add_option(Core::ArgsParser::Option {
-        .requires_argument = true,
-        .help_string = ""Add a header search path passed to the compiler"",
-        .long_name = ""header-include-path"",
-        .short_name = 'i',
-        .value_name = ""path"",
-        .accept_value = [&](char const* s) {
-            s_header_search_paths.append(s);
-            return true;
-        },
-    });
-    args_parser.add_positional_argument(path, ""IDL file"", ""idl-file"");
-    args_parser.add_positional_argument(import_base_path, ""Import base path"", ""import-base-path"", Core::ArgsParser::Required::No);
-    args_parser.parse(argc, argv);
-
-    auto file_or_error = Core::File::open(path, Core::OpenMode::ReadOnly);
-    if (file_or_error.is_error()) {
-        warnln(""Failed to open {}: {}"", path, file_or_error.error());
-        return 1;
-    }
-
-    LexicalPath lexical_path(path);
-    auto& namespace_ = lexical_path.parts_view().at(lexical_path.parts_view().size() - 2);
-
-    auto data = file_or_error.value()->read_all();
-
-    if (import_base_path.is_null())
-        import_base_path = lexical_path.dirname();
-
-    auto interface = IDL::parse_interface(path, data, import_base_path);
-
-    if (namespace_.is_one_of(""Crypto"", ""CSS"", ""DOM"", ""Encoding"", ""HTML"", ""UIEvents"", ""Geometry"", ""HighResolutionTime"", ""IntersectionObserver"", ""NavigationTiming"", ""RequestIdleCallback"", ""ResizeObserver"", ""SVG"", ""Selection"", ""XHR"", ""URL"")) {
+    if (input.is_one_of(""class"", ""template"", ""for"", ""default"", ""char"", ""namespace"", ""delete"")) {
         StringBuilder builder;
-        builder.append(namespace_);
-        builder.append(""::"");
-        builder.append(interface->name);
-        interface->fully_qualified_name = builder.to_string();
-    } else {
-        interface->fully_qualified_name = interface->name;
+        builder.append(input);
+        builder.append('_');
+        return builder.to_string();
     }
 
-    if constexpr (WRAPPER_GENERATOR_DEBUG) {
-        dbgln(""Attributes:"");
-        for (auto& attribute : interface->attributes) {
-            dbgln(""  {}{}{} {}"",
-                attribute.readonly ? ""readonly "" : """",
-                attribute.type->name,
-                attribute.type->nullable ? ""?"" : """",
-                attribute.name);
-        }
-
-        dbgln(""Functions:"");
-        for (auto& function : interface->functions) {
-            dbgln(""  {}{} {}"",
-                function.return_type->name,
-                function.return_type->nullable ? ""?"" : """",
-                function.name);
-            for (auto& parameter : function.parameters) {
-                dbgln(""    {}{} {}"",
-                    parameter.type->name,
-                    parameter.type->nullable ? ""?"" : """",
-                    parameter.name);
-            }
-        }
-
-        dbgln(""Static Functions:"");
-        for (auto& function : interface->static_functions) {
-            dbgln(""  static {}{} {}"",
-                function.return_type->name,
-                function.return_type->nullable ? ""?"" : """",
-                function.name);
-            for (auto& parameter : function.parameters) {
-                dbgln(""    {}{} {}"",
-                    parameter.type->name,
-                    parameter.type->nullable ? ""?"" : """",
-                    parameter.name);
-            }
-        }
-    }
+    return input.replace(""-"", ""_"");
+}
 
-    if (header_mode)
-        generate_header(*interface);
+static void generate_include_for_wrapper(auto& generator, auto& wrapper_name)
+{
+    auto wrapper_generator = generator.fork();
+    wrapper_generator.set(""wrapper_class"", wrapper_name);
+    // FIXME: These may or may not exist, because REASONS.
+    wrapper_generator.append(R""~~~(
+#if __has_include(<LibWeb/Bindings/@wrapper_class@.h>)
+#   include <LibWeb/Bindings/@wrapper_class@.h>
+#endif
+#if __has_include(<LibWeb/Bindings/@wrapper_class@Factory.h>)
+#   include <LibWeb/Bindings/@wrapper_class@Factory.h>
+#endif
+)~~~"");
+}
 
-    if (implementation_mode)
-        generate_implementation(*interface);
+static void generate_include_for_iterator(auto& generator, auto& iterator_path, auto& iterator_name)
+{
+    auto iterator_generator = generator.fork();
+    iterator_generator.set(""iterator_class.path"", iterator_path);
+    iterator_generator.set(""iterator_class.name"", iterator_name);
+    // FIXME: These may or may not exist, because REASONS.
+    iterator_generator.append(R""~~~(
+//#if __has_include(<LibWeb/@iterator_class.path@.h>)
+#   include <LibWeb/@iterator_class.path@.h>
+//#endif
+#if __has_include(<LibWeb/@iterator_class.path@Factory.h>)
+#   include <LibWeb/@iterator_class.path@Factory.h>
+#endif
+#if __has_include(<LibWeb/Bindings/@iterator_class.name@Wrapper.h>)
+#   include <LibWeb/Bindings/@iterator_class.name@Wrapper.h>
+#endif
+#if __has_include(<LibWeb/Bindings/@iterator_class.name@WrapperFactory.h>)
+#   include <LibWeb/Bindings/@iterator_class.name@WrapperFactory.h>
+#endif
+)~~~"");
+}
 
-    if (constructor_header_mode)
-        generate_constructor_header(*interface);
+static void generate_include_for(auto& generator, auto& path)
+{
+    auto forked_generator = generator.fork();
+    auto path_string = path;
+    for (auto& search_path : s_header_search_paths) {
+        if (!path.starts_with(search_path))
+            continue;
+        auto relative_path = LexicalPath::relative_path(path, search_path);
+        if (relative_path.length() < path_string.length())
+            path_string = relative_path;
+    }
 
-    if (constructor_implementation_mode)
-        generate_constructor_implementation(*interface);
+    LexicalPath include_path { path_string };
+    forked_generator.set(""include.path"", String::formatted(""{}/{}.h"", include_path.dirname(), include_path.title()));
+    forked_generator.append(R""~~~(
+#include <@include.path@>
+)~~~"");
+}
 
-    if (prototype_header_mode)
-        generate_prototype_header(*interface);
+static void emit_includes_for_all_imports(auto& interface, auto& generator, bool is_header, bool is_iterator = false)
+{
+    Queue<RemoveCVReference<decltype(interface)> const*> interfaces;
+    HashTable<String> paths_imported;
+    if (is_header)
+        paths_imported.set(interface.module_own_path);
 
-    if (prototype_implementation_mode)
-        generate_prototype_implementation(*interface);
+    interfaces.enqueue(&interface);
 
-    if (iterator_header_mode)
-        generate_iterator_header(*interface);
+    while (!interfaces.is_empty()) {
+        auto interface = interfaces.dequeue();
+        if (paths_imported.contains(interface->module_own_path))
+            continue;
 
-    if (iterator_implementation_mode)
-        generate_iterator_implementation(*interface);
+        paths_imported.set(interface->module_own_path);
+        for (auto& imported_interface : interface->imported_modules) {
+            if (!paths_imported.contains(imported_interface.module_own_path))
+                interfaces.enqueue(&imported_interface);
+        }
 
-    if (iterator_prototype_header_mode)
-        generate_iterator_prototype_header(*interface);
+        generate_include_for(generator, interface->module_own_path);
 
-    if (iterator_prototype_implementation_mode)
-        generate_iterator_prototype_implementation(*interface);
+        if (is_iterator) {
+            auto iterator_name = String::formatted(""{}Iterator"", interface->name);
+            auto iterator_path = String::formatted(""{}Iterator"", interface->fully_qualified_name.replace(""::"", ""/""));
+            generate_include_for_iterator(generator, iterator_path, iterator_name);
+        }
 
-    return 0;
+        if (interface->wrapper_class != ""Wrapper"")
+            generate_include_for_wrapper(generator, interface->wrapper_class);
+    }
 }
 
 static bool should_emit_wrapper_factory(IDL::Interface const& interface)
@@ -2483,7 +1302,7 @@ JS_DEFINE_NATIVE_FUNCTION(@class_name@::@function.name:snakecase@)
 )~~~"");
 }
 
-static void generate_header(IDL::Interface const& interface)
+void generate_header(IDL::Interface const& interface)
 {
     StringBuilder builder;
     SourceGenerator generator { builder };
@@ -3447,7 +2266,7 @@ JS::ThrowCompletionOr<JS::MarkedVector<JS::Value>> @class_name@::internal_own_pr
     outln(""{}"", generator.as_string_view());
 }
 
-static void generate_constructor_header(IDL::Interface const& interface)
+void generate_constructor_header(IDL::Interface const& interface)
 {
     StringBuilder builder;
     SourceGenerator generator { builder };
@@ -3682,7 +2501,7 @@ define_direct_property(""@constant.name@"", JS::Value((i32)@constant.value@), JS::
     outln(""{}"", generator.as_string_view());
 }
 
-static void generate_prototype_header(IDL::Interface const& interface)
+void generate_prototype_header(IDL::Interface const& interface)
 {
     StringBuilder builder;
     SourceGenerator generator { builder };
@@ -4172,7 +2991,7 @@ JS_DEFINE_NATIVE_FUNCTION(@prototype_class@::values)
     outln(""{}"", generator.as_string_view());
 }
 
-static void generate_iterator_header(IDL::Interface const& interface)
+void generate_iterator_header(IDL::Interface const& interface)
 {
     VERIFY(interface.pair_iterator_types.has_value());
     StringBuilder builder;
@@ -4297,7 +3116,7 @@ void @wrapper_class@::visit_edges(Cell::Visitor& visitor)
     outln(""{}"", generator.as_string_view());
 }
 
-static void generate_iterator_prototype_header(IDL::Interface const& interface)
+void generate_iterator_prototype_header(IDL::Interface const& interface)
 {
     VERIFY(interface.pair_iterator_types.has_value());
     StringBuilder builder;
@@ -4412,3 +3231,5 @@ JS_DEFINE_NATIVE_FUNCTION(@prototype_class@::next)
 
     outln(""{}"", generator.as_string_view());
 }
+
+}
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLParser.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLParser.cpp
new file mode 100644
index 000000000000..a07022e78768
--- /dev/null
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLParser.cpp
@@ -0,0 +1,757 @@
+/*
+ * Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
+ * Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
+ * Copyright (c) 2022, Ali Mohammad Pur <mpfard@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include ""IDLParser.h""
+#include <AK/LexicalPath.h>
+#include <AK/QuickSort.h>
+#include <LibCore/File.h>
+
+[[noreturn]] static void report_parsing_error(StringView message, StringView filename, StringView input, size_t offset)
+{
+    // FIXME: Spaghetti code ahead.
+
+    size_t lineno = 1;
+    size_t colno = 1;
+    size_t start_line = 0;
+    size_t line_length = 0;
+    for (size_t index = 0; index < input.length(); ++index) {
+        if (offset == index)
+            colno = index - start_line + 1;
+
+        if (input[index] == '\n') {
+            if (index >= offset)
+                break;
+
+            start_line = index + 1;
+            line_length = 0;
+            ++lineno;
+        } else {
+            ++line_length;
+        }
+    }
+
+    StringBuilder error_message;
+    error_message.appendff(""{}\n"", input.substring_view(start_line, line_length));
+    for (size_t i = 0; i < colno - 1; ++i)
+        error_message.append(' ');
+    error_message.append(""\033[1;31m^\n"");
+    error_message.appendff(""{}:{}: error: {}\033[0m\n"", filename, lineno, message);
+
+    warnln(""{}"", error_message.string_view());
+    exit(EXIT_FAILURE);
+}
+
+static String convert_enumeration_value_to_cpp_enum_member(String const& value, HashTable<String>& names_already_seen)
+{
+    StringBuilder builder;
+    GenericLexer lexer { value };
+
+    while (!lexer.is_eof()) {
+        lexer.ignore_while([](auto c) { return is_ascii_space(c) || c == '-' || c == '_'; });
+        auto word = lexer.consume_while([](auto c) { return is_ascii_alphanumeric(c); });
+        if (!word.is_empty()) {
+            builder.append(word.to_titlecase_string());
+        } else {
+            auto non_alnum_string = lexer.consume_while([](auto c) { return !is_ascii_alphanumeric(c); });
+            if (!non_alnum_string.is_empty())
+                builder.append(""_"");
+        }
+    }
+
+    if (builder.is_empty())
+        builder.append(""Empty"");
+
+    while (names_already_seen.contains(builder.string_view()))
+        builder.append('_');
+
+    names_already_seen.set(builder.string_view());
+    return builder.build();
+}
+
+namespace IDL {
+
+HashTable<String> Parser::s_all_imported_paths {};
+
+void Parser::assert_specific(char ch)
+{
+    if (!lexer.consume_specific(ch))
+        report_parsing_error(String::formatted(""expected '{}'"", ch), filename, input, lexer.tell());
+}
+
+void Parser::consume_whitespace()
+{
+    bool consumed = true;
+    while (consumed) {
+        consumed = lexer.consume_while(is_ascii_space).length() > 0;
+
+        if (lexer.consume_specific(""//"")) {
+            lexer.consume_until('\n');
+            lexer.ignore();
+            consumed = true;
+        }
+    }
+}
+
+void Parser::assert_string(StringView expected)
+{
+    if (!lexer.consume_specific(expected))
+        report_parsing_error(String::formatted(""expected '{}'"", expected), filename, input, lexer.tell());
+}
+
+HashMap<String, String> Parser::parse_extended_attributes()
+{
+    HashMap<String, String> extended_attributes;
+    for (;;) {
+        consume_whitespace();
+        if (lexer.consume_specific(']'))
+            break;
+        auto name = lexer.consume_until([](auto ch) { return ch == ']' || ch == '=' || ch == ','; });
+        if (lexer.consume_specific('=')) {
+            auto value = lexer.consume_until([](auto ch) { return ch == ']' || ch == ','; });
+            extended_attributes.set(name, value);
+        } else {
+            extended_attributes.set(name, {});
+        }
+        lexer.consume_specific(',');
+    }
+    consume_whitespace();
+    return extended_attributes;
+}
+
+Optional<NonnullOwnPtr<Interface>> Parser::resolve_import(auto path)
+{
+    auto include_path = LexicalPath::join(import_base_path, path).string();
+    if (!Core::File::exists(include_path))
+        report_parsing_error(String::formatted(""{}: No such file or directory"", include_path), filename, input, lexer.tell());
+
+    auto real_path = Core::File::real_path_for(include_path);
+    if (s_all_imported_paths.contains(real_path))
+        return {};
+
+    s_all_imported_paths.set(real_path);
+
+    auto file_or_error = Core::File::open(real_path, Core::OpenMode::ReadOnly);
+    if (file_or_error.is_error())
+        report_parsing_error(String::formatted(""Failed to open {}: {}"", real_path, file_or_error.error()), filename, input, lexer.tell());
+
+    auto data = file_or_error.value()->read_all();
+    return Parser(real_path, data, import_base_path).parse();
+}
+
+NonnullRefPtr<Type> Parser::parse_type()
+{
+    if (lexer.consume_specific('(')) {
+        NonnullRefPtrVector<Type> union_member_types;
+        union_member_types.append(parse_type());
+        consume_whitespace();
+        assert_string(""or"");
+        consume_whitespace();
+        union_member_types.append(parse_type());
+        consume_whitespace();
+
+        while (lexer.consume_specific(""or"")) {
+            consume_whitespace();
+            union_member_types.append(parse_type());
+            consume_whitespace();
+        }
+
+        assert_specific(')');
+
+        bool nullable = lexer.consume_specific('?');
+
+        return adopt_ref(*new UnionType("""", nullable, move(union_member_types)));
+    }
+
+    bool unsigned_ = lexer.consume_specific(""unsigned"");
+    if (unsigned_)
+        consume_whitespace();
+
+    auto name = lexer.consume_until([](auto ch) { return !is_ascii_alphanumeric(ch) && ch != '_'; });
+    NonnullRefPtrVector<Type> parameters;
+    bool is_parameterized_type = false;
+    if (lexer.consume_specific('<')) {
+        is_parameterized_type = true;
+        parameters.append(parse_type());
+        while (lexer.consume_specific(',')) {
+            consume_whitespace();
+            parameters.append(parse_type());
+        }
+        lexer.consume_specific('>');
+    }
+    auto nullable = lexer.consume_specific('?');
+    StringBuilder builder;
+    if (unsigned_)
+        builder.append(""unsigned "");
+    builder.append(name);
+
+    if (is_parameterized_type)
+        return adopt_ref(*new ParameterizedType(builder.to_string(), nullable, move(parameters)));
+
+    return adopt_ref(*new Type(builder.to_string(), nullable));
+}
+
+void Parser::parse_attribute(HashMap<String, String>& extended_attributes, Interface& interface)
+{
+    bool readonly = lexer.consume_specific(""readonly"");
+    if (readonly)
+        consume_whitespace();
+
+    if (lexer.consume_specific(""attribute""))
+        consume_whitespace();
+
+    auto type = parse_type();
+    consume_whitespace();
+    auto name = lexer.consume_until([](auto ch) { return is_ascii_space(ch) || ch == ';'; });
+    consume_whitespace();
+
+    assert_specific(';');
+
+    auto name_as_string = name.to_string();
+    auto getter_callback_name = String::formatted(""{}_getter"", name_as_string.to_snakecase());
+    auto setter_callback_name = String::formatted(""{}_setter"", name_as_string.to_snakecase());
+
+    Attribute attribute {
+        readonly,
+        move(type),
+        move(name_as_string),
+        move(extended_attributes),
+        move(getter_callback_name),
+        move(setter_callback_name),
+    };
+    interface.attributes.append(move(attribute));
+}
+
+void Parser::parse_constant(Interface& interface)
+{
+    lexer.consume_specific(""const"");
+    consume_whitespace();
+
+    auto type = parse_type();
+    consume_whitespace();
+    auto name = lexer.consume_until([](auto ch) { return is_ascii_space(ch) || ch == '='; });
+    consume_whitespace();
+    lexer.consume_specific('=');
+    consume_whitespace();
+    auto value = lexer.consume_while([](auto ch) { return !is_ascii_space(ch) && ch != ';'; });
+    consume_whitespace();
+    assert_specific(';');
+
+    Constant constant {
+        move(type),
+        move(name),
+        move(value),
+    };
+    interface.constants.append(move(constant));
+}
+
+Vector<Parameter> Parser::parse_parameters()
+{
+    consume_whitespace();
+    Vector<Parameter> parameters;
+    for (;;) {
+        if (lexer.next_is(')'))
+            break;
+        HashMap<String, String> extended_attributes;
+        if (lexer.consume_specific('['))
+            extended_attributes = parse_extended_attributes();
+        bool optional = lexer.consume_specific(""optional"");
+        if (optional)
+            consume_whitespace();
+        auto type = parse_type();
+        bool variadic = lexer.consume_specific(""...""sv);
+        consume_whitespace();
+        auto name = lexer.consume_until([](auto ch) { return is_ascii_space(ch) || ch == ',' || ch == ')' || ch == '='; });
+        Parameter parameter = { move(type), move(name), optional, {}, extended_attributes, variadic };
+        consume_whitespace();
+        if (variadic) {
+            // Variadic parameters must be last and do not have default values.
+            parameters.append(move(parameter));
+            break;
+        }
+        if (lexer.next_is(')')) {
+            parameters.append(move(parameter));
+            break;
+        }
+        if (lexer.next_is('=') && optional) {
+            assert_specific('=');
+            consume_whitespace();
+            auto default_value = lexer.consume_until([](auto ch) { return is_ascii_space(ch) || ch == ',' || ch == ')'; });
+            parameter.optional_default_value = default_value;
+        }
+        parameters.append(move(parameter));
+        if (lexer.next_is(')'))
+            break;
+        assert_specific(',');
+        consume_whitespace();
+    }
+    return parameters;
+}
+
+Function Parser::parse_function(HashMap<String, String>& extended_attributes, Interface& interface, IsSpecialOperation is_special_operation)
+{
+    bool static_ = false;
+    if (lexer.consume_specific(""static"")) {
+        static_ = true;
+        consume_whitespace();
+    }
+
+    auto return_type = parse_type();
+    consume_whitespace();
+    auto name = lexer.consume_until([](auto ch) { return is_ascii_space(ch) || ch == '('; });
+    consume_whitespace();
+    assert_specific('(');
+    auto parameters = parse_parameters();
+    assert_specific(')');
+    consume_whitespace();
+    assert_specific(';');
+
+    Function function { move(return_type), name, move(parameters), move(extended_attributes) };
+
+    // ""Defining a special operation with an identifier is equivalent to separating the special operation out into its own declaration without an identifier.""
+    if (is_special_operation == IsSpecialOperation::No || (is_special_operation == IsSpecialOperation::Yes && !name.is_empty())) {
+        if (!static_)
+            interface.functions.append(function);
+        else
+            interface.static_functions.append(function);
+    }
+
+    return function;
+}
+
+void Parser::parse_constructor(Interface& interface)
+{
+    assert_string(""constructor"");
+    consume_whitespace();
+    assert_specific('(');
+    auto parameters = parse_parameters();
+    assert_specific(')');
+    consume_whitespace();
+    assert_specific(';');
+
+    interface.constructors.append(Constructor { interface.name, move(parameters) });
+}
+
+void Parser::parse_stringifier(HashMap<String, String>& extended_attributes, Interface& interface)
+{
+    assert_string(""stringifier"");
+    consume_whitespace();
+    interface.has_stringifier = true;
+    if (lexer.next_is(""readonly"") || lexer.next_is(""attribute"")) {
+        parse_attribute(extended_attributes, interface);
+        interface.stringifier_attribute = interface.attributes.last().name;
+    } else {
+        assert_specific(';');
+    }
+}
+
+void Parser::parse_iterable(Interface& interface)
+{
+    assert_string(""iterable"");
+    assert_specific('<');
+    auto first_type = parse_type();
+    if (lexer.next_is(',')) {
+        if (interface.supports_indexed_properties())
+            report_parsing_error(""Interfaces with a pair iterator must not supported indexed properties."", filename, input, lexer.tell());
+
+        assert_specific(',');
+        consume_whitespace();
+        auto second_type = parse_type();
+        interface.pair_iterator_types = Tuple { move(first_type), move(second_type) };
+    } else {
+        if (!interface.supports_indexed_properties())
+            report_parsing_error(""Interfaces with a value iterator must supported indexed properties."", filename, input, lexer.tell());
+
+        interface.value_iterator_type = move(first_type);
+    }
+    assert_specific('>');
+    assert_specific(';');
+}
+
+void Parser::parse_getter(HashMap<String, String>& extended_attributes, Interface& interface)
+{
+    assert_string(""getter"");
+    consume_whitespace();
+    auto function = parse_function(extended_attributes, interface, IsSpecialOperation::Yes);
+
+    if (function.parameters.size() != 1)
+        report_parsing_error(String::formatted(""Named/indexed property getters must have only 1 parameter, got {} parameters."", function.parameters.size()), filename, input, lexer.tell());
+
+    auto& identifier = function.parameters.first();
+
+    if (identifier.type->nullable)
+        report_parsing_error(""identifier's type must not be nullable."", filename, input, lexer.tell());
+
+    if (identifier.optional)
+        report_parsing_error(""identifier must not be optional."", filename, input, lexer.tell());
+
+    // FIXME: Disallow variadic functions once they're supported.
+
+    if (identifier.type->name == ""DOMString"") {
+        if (interface.named_property_getter.has_value())
+            report_parsing_error(""An interface can only have one named property getter."", filename, input, lexer.tell());
+
+        interface.named_property_getter = move(function);
+    } else if (identifier.type->name == ""unsigned long"") {
+        if (interface.indexed_property_getter.has_value())
+            report_parsing_error(""An interface can only have one indexed property getter."", filename, input, lexer.tell());
+
+        interface.indexed_property_getter = move(function);
+    } else {
+        report_parsing_error(String::formatted(""Named/indexed property getter's identifier's type must be either 'DOMString' or 'unsigned long', got '{}'."", identifier.type->name), filename, input, lexer.tell());
+    }
+}
+
+void Parser::parse_setter(HashMap<String, String>& extended_attributes, Interface& interface)
+{
+    assert_string(""setter"");
+    consume_whitespace();
+    auto function = parse_function(extended_attributes, interface, IsSpecialOperation::Yes);
+
+    if (function.parameters.size() != 2)
+        report_parsing_error(String::formatted(""Named/indexed property setters must have only 2 parameters, got {} parameter(s)."", function.parameters.size()), filename, input, lexer.tell());
+
+    auto& identifier = function.parameters.first();
+
+    if (identifier.type->nullable)
+        report_parsing_error(""identifier's type must not be nullable."", filename, input, lexer.tell());
+
+    if (identifier.optional)
+        report_parsing_error(""identifier must not be optional."", filename, input, lexer.tell());
+
+    // FIXME: Disallow variadic functions once they're supported.
+
+    if (identifier.type->name == ""DOMString"") {
+        if (interface.named_property_setter.has_value())
+            report_parsing_error(""An interface can only have one named property setter."", filename, input, lexer.tell());
+
+        if (!interface.named_property_getter.has_value())
+            report_parsing_error(""A named property setter must be accompanied by a named property getter."", filename, input, lexer.tell());
+
+        interface.named_property_setter = move(function);
+    } else if (identifier.type->name == ""unsigned long"") {
+        if (interface.indexed_property_setter.has_value())
+            report_parsing_error(""An interface can only have one indexed property setter."", filename, input, lexer.tell());
+
+        if (!interface.indexed_property_getter.has_value())
+            report_parsing_error(""An indexed property setter must be accompanied by an indexed property getter."", filename, input, lexer.tell());
+
+        interface.indexed_property_setter = move(function);
+    } else {
+        report_parsing_error(String::formatted(""Named/indexed property setter's identifier's type must be either 'DOMString' or 'unsigned long', got '{}'."", identifier.type->name), filename, input, lexer.tell());
+    }
+}
+
+void Parser::parse_deleter(HashMap<String, String>& extended_attributes, Interface& interface)
+{
+    assert_string(""deleter"");
+    consume_whitespace();
+    auto function = parse_function(extended_attributes, interface, IsSpecialOperation::Yes);
+
+    if (function.parameters.size() != 1)
+        report_parsing_error(String::formatted(""Named property deleter must have only 1 parameter, got {} parameters."", function.parameters.size()), filename, input, lexer.tell());
+
+    auto& identifier = function.parameters.first();
+
+    if (identifier.type->nullable)
+        report_parsing_error(""identifier's type must not be nullable."", filename, input, lexer.tell());
+
+    if (identifier.optional)
+        report_parsing_error(""identifier must not be optional."", filename, input, lexer.tell());
+
+    // FIXME: Disallow variadic functions once they're supported.
+
+    if (identifier.type->name == ""DOMString"") {
+        if (interface.named_property_deleter.has_value())
+            report_parsing_error(""An interface can only have one named property deleter."", filename, input, lexer.tell());
+
+        if (!interface.named_property_getter.has_value())
+            report_parsing_error(""A named property deleter must be accompanied by a named property getter."", filename, input, lexer.tell());
+
+        interface.named_property_deleter = move(function);
+    } else {
+        report_parsing_error(String::formatted(""Named property deleter's identifier's type must be 'DOMString', got '{}'."", identifier.type->name), filename, input, lexer.tell());
+    }
+}
+
+void Parser::parse_interface(Interface& interface)
+{
+    consume_whitespace();
+    interface.name = lexer.consume_until([](auto ch) { return is_ascii_space(ch); });
+    consume_whitespace();
+    if (lexer.consume_specific(':')) {
+        consume_whitespace();
+        interface.parent_name = lexer.consume_until([](auto ch) { return is_ascii_space(ch); });
+        consume_whitespace();
+    }
+    assert_specific('{');
+
+    for (;;) {
+        HashMap<String, String> extended_attributes;
+
+        consume_whitespace();
+
+        if (lexer.consume_specific('}')) {
+            consume_whitespace();
+            assert_specific(';');
+            break;
+        }
+
+        if (lexer.consume_specific('[')) {
+            extended_attributes = parse_extended_attributes();
+            if (!interface.has_unscopable_member && extended_attributes.contains(""Unscopable""))
+                interface.has_unscopable_member = true;
+        }
+
+        if (lexer.next_is(""constructor"")) {
+            parse_constructor(interface);
+            continue;
+        }
+
+        if (lexer.next_is(""const"")) {
+            parse_constant(interface);
+            continue;
+        }
+
+        if (lexer.next_is(""stringifier"")) {
+            parse_stringifier(extended_attributes, interface);
+            continue;
+        }
+
+        if (lexer.next_is(""iterable"")) {
+            parse_iterable(interface);
+            continue;
+        }
+
+        if (lexer.next_is(""readonly"") || lexer.next_is(""attribute"")) {
+            parse_attribute(extended_attributes, interface);
+            continue;
+        }
+
+        if (lexer.next_is(""getter"")) {
+            parse_getter(extended_attributes, interface);
+            continue;
+        }
+
+        if (lexer.next_is(""setter"")) {
+            parse_setter(extended_attributes, interface);
+            continue;
+        }
+
+        if (lexer.next_is(""deleter"")) {
+            parse_deleter(extended_attributes, interface);
+            continue;
+        }
+
+        parse_function(extended_attributes, interface);
+    }
+
+    interface.wrapper_class = String::formatted(""{}Wrapper"", interface.name);
+    interface.wrapper_base_class = String::formatted(""{}Wrapper"", interface.parent_name.is_empty() ? String::empty() : interface.parent_name);
+    interface.constructor_class = String::formatted(""{}Constructor"", interface.name);
+    interface.prototype_class = String::formatted(""{}Prototype"", interface.name);
+    interface.prototype_base_class = String::formatted(""{}Prototype"", interface.parent_name.is_empty() ? ""Object"" : interface.parent_name);
+    consume_whitespace();
+}
+
+void Parser::parse_enumeration(Interface& interface)
+{
+    assert_string(""enum"");
+    consume_whitespace();
+
+    Enumeration enumeration {};
+
+    auto name = lexer.consume_until([](auto ch) { return is_ascii_space(ch); });
+    consume_whitespace();
+
+    assert_specific('{');
+
+    bool first = true;
+    for (; !lexer.is_eof();) {
+        consume_whitespace();
+        if (lexer.next_is('}'))
+            break;
+        if (!first) {
+            assert_specific(',');
+            consume_whitespace();
+        }
+
+        assert_specific('""');
+        auto string = lexer.consume_until('""');
+        assert_specific('""');
+        consume_whitespace();
+
+        if (enumeration.values.contains(string))
+            report_parsing_error(String::formatted(""Enumeration {} contains duplicate member '{}'"", name, string), filename, input, lexer.tell());
+        else
+            enumeration.values.set(string);
+
+        if (first)
+            enumeration.first_member = move(string);
+
+        first = false;
+    }
+
+    consume_whitespace();
+    assert_specific('}');
+    assert_specific(';');
+
+    HashTable<String> names_already_seen;
+    for (auto& entry : enumeration.values)
+        enumeration.translated_cpp_names.set(entry, convert_enumeration_value_to_cpp_enum_member(entry, names_already_seen));
+
+    interface.enumerations.set(name, move(enumeration));
+    consume_whitespace();
+}
+
+void Parser::parse_dictionary(Interface& interface)
+{
+    assert_string(""dictionary"");
+    consume_whitespace();
+
+    Dictionary dictionary {};
+
+    auto name = lexer.consume_until([](auto ch) { return is_ascii_space(ch); });
+    consume_whitespace();
+
+    if (lexer.consume_specific(':')) {
+        consume_whitespace();
+        dictionary.parent_name = lexer.consume_until([](auto ch) { return is_ascii_space(ch); });
+        consume_whitespace();
+    }
+    assert_specific('{');
+
+    for (;;) {
+        consume_whitespace();
+
+        if (lexer.consume_specific('}')) {
+            consume_whitespace();
+            assert_specific(';');
+            break;
+        }
+
+        bool required = false;
+        HashMap<String, String> extended_attributes;
+
+        if (lexer.consume_specific(""required"")) {
+            required = true;
+            consume_whitespace();
+            if (lexer.consume_specific('['))
+                extended_attributes = parse_extended_attributes();
+        }
+
+        auto type = parse_type();
+        consume_whitespace();
+
+        auto name = lexer.consume_until([](auto ch) { return is_ascii_space(ch) || ch == ';'; });
+        consume_whitespace();
+
+        Optional<StringView> default_value;
+
+        if (lexer.consume_specific('=')) {
+            VERIFY(!required);
+            consume_whitespace();
+            default_value = lexer.consume_until([](auto ch) { return is_ascii_space(ch) || ch == ';'; });
+            consume_whitespace();
+        }
+
+        assert_specific(';');
+
+        DictionaryMember member {
+            required,
+            move(type),
+            name,
+            move(extended_attributes),
+            Optional<String>(move(default_value)),
+        };
+        dictionary.members.append(move(member));
+    }
+
+    // dictionary members need to be evaluated in lexicographical order
+    quick_sort(dictionary.members, [&](auto& one, auto& two) {
+        return one.name < two.name;
+    });
+
+    interface.dictionaries.set(name, move(dictionary));
+    consume_whitespace();
+}
+
+void Parser::parse_non_interface_entities(bool allow_interface, Interface& interface)
+{
+    while (!lexer.is_eof()) {
+        if (lexer.next_is(""dictionary"")) {
+            parse_dictionary(interface);
+        } else if (lexer.next_is(""enum"")) {
+            parse_enumeration(interface);
+        } else if ((allow_interface && !lexer.next_is(""interface"")) || !allow_interface) {
+            report_parsing_error(""expected 'enum' or 'dictionary'"", filename, input, lexer.tell());
+        } else {
+            break;
+        }
+    }
+}
+
+NonnullOwnPtr<Interface> Parser::parse()
+{
+    auto this_module = Core::File::real_path_for(filename);
+    s_all_imported_paths.set(this_module);
+
+    auto interface = make<Interface>();
+    interface->module_own_path = this_module;
+
+    NonnullOwnPtrVector<Interface> imports;
+    while (lexer.consume_specific(""#import"")) {
+        consume_whitespace();
+        assert_specific('<');
+        auto path = lexer.consume_until('>');
+        lexer.ignore();
+        auto maybe_interface = resolve_import(path);
+        if (maybe_interface.has_value()) {
+            for (auto& entry : maybe_interface.value()->imported_paths)
+                s_all_imported_paths.set(entry);
+            imports.append(maybe_interface.release_value());
+        }
+        consume_whitespace();
+    }
+    interface->imported_paths = s_all_imported_paths;
+
+    if (lexer.consume_specific('['))
+        interface->extended_attributes = parse_extended_attributes();
+
+    parse_non_interface_entities(true, *interface);
+
+    if (lexer.consume_specific(""interface""))
+        parse_interface(*interface);
+
+    parse_non_interface_entities(false, *interface);
+
+    for (auto& import : imports) {
+        // FIXME: Instead of copying every imported entity into the current interface, query imports directly
+        for (auto& dictionary : import.dictionaries)
+            interface->dictionaries.set(dictionary.key, dictionary.value);
+
+        for (auto& enumeration : import.enumerations) {
+            auto enumeration_copy = enumeration.value;
+            enumeration_copy.is_original_definition = false;
+            interface->enumerations.set(enumeration.key, move(enumeration_copy));
+        }
+    }
+    interface->imported_modules = move(imports);
+
+    return interface;
+}
+
+Parser::Parser(String filename, StringView contents, String import_base_path)
+    : import_base_path(move(import_base_path))
+    , filename(move(filename))
+    , input(contents)
+    , lexer(input)
+{
+}
+
+}
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLParser.h b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLParser.h
new file mode 100644
index 000000000000..5c408e115334
--- /dev/null
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLParser.h
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
+ * Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
+ * Copyright (c) 2022, Ali Mohammad Pur <mpfard@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include ""IDLTypes.h""
+#include <AK/CharacterTypes.h>
+#include <AK/GenericLexer.h>
+
+namespace IDL {
+
+class Parser {
+public:
+    Parser(String filename, StringView contents, String import_base_path);
+    NonnullOwnPtr<Interface> parse();
+
+private:
+    // https://webidl.spec.whatwg.org/#dfn-special-operation
+    // A special operation is a getter, setter or deleter.
+    enum class IsSpecialOperation {
+        No,
+        Yes,
+    };
+
+    void assert_specific(char ch);
+    void assert_string(StringView expected);
+    void consume_whitespace();
+    Optional<NonnullOwnPtr<Interface>> resolve_import(auto path);
+
+    HashMap<String, String> parse_extended_attributes();
+    void parse_attribute(HashMap<String, String>& extended_attributes, Interface&);
+    void parse_interface(Interface&);
+    void parse_non_interface_entities(bool allow_interface, Interface&);
+    void parse_enumeration(Interface&);
+    void parse_dictionary(Interface&);
+    void parse_constructor(Interface&);
+    void parse_getter(HashMap<String, String>& extended_attributes, Interface&);
+    void parse_setter(HashMap<String, String>& extended_attributes, Interface&);
+    void parse_deleter(HashMap<String, String>& extended_attributes, Interface&);
+    void parse_stringifier(HashMap<String, String>& extended_attributes, Interface&);
+    void parse_iterable(Interface&);
+    Function parse_function(HashMap<String, String>& extended_attributes, Interface&, IsSpecialOperation is_special_operation = IsSpecialOperation::No);
+    Vector<Parameter> parse_parameters();
+    NonnullRefPtr<Type> parse_type();
+    void parse_constant(Interface&);
+
+    static HashTable<String> s_all_imported_paths;
+    String import_base_path;
+    String filename;
+    StringView input;
+    GenericLexer lexer;
+};
+
+}
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLTypes.h b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLTypes.h
new file mode 100644
index 000000000000..f4a98bf0d1cc
--- /dev/null
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLTypes.h
@@ -0,0 +1,321 @@
+/*
+ * Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
+ * Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
+ * Copyright (c) 2022, Ali Mohammad Pur <mpfard@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/HashMap.h>
+#include <AK/NonnullOwnPtrVector.h>
+#include <AK/NonnullRefPtrVector.h>
+#include <AK/OwnPtr.h>
+#include <AK/SourceGenerator.h>
+#include <AK/String.h>
+#include <AK/StringBuilder.h>
+#include <AK/Tuple.h>
+#include <AK/TypeCasts.h>
+
+namespace IDL {
+
+template<typename FunctionType>
+static size_t get_function_length(FunctionType& function)
+{
+    size_t length = 0;
+    for (auto& parameter : function.parameters) {
+        if (!parameter.optional && !parameter.variadic)
+            length++;
+    }
+    return length;
+}
+
+enum class SequenceStorageType {
+    Vector,       // Used to safely store non-JS values
+    MarkedVector, // Used to safely store JS::Value and anything that inherits JS::Cell, e.g. JS::Object
+};
+
+struct CppType {
+    String name;
+    SequenceStorageType sequence_storage_type;
+};
+
+struct Type : public RefCounted<Type> {
+    Type() = default;
+
+    Type(String name, bool nullable)
+        : name(move(name))
+        , nullable(nullable)
+    {
+    }
+
+    virtual ~Type() = default;
+
+    String name;
+    bool nullable { false };
+    bool is_string() const { return name.is_one_of(""ByteString"", ""CSSOMString"", ""DOMString"", ""USVString""); }
+
+    // https://webidl.spec.whatwg.org/#dfn-integer-type
+    bool is_integer() const { return name.is_one_of(""byte"", ""octet"", ""short"", ""unsigned short"", ""long"", ""unsigned long"", ""long long"", ""unsigned long long""); }
+
+    // https://webidl.spec.whatwg.org/#dfn-numeric-type
+    bool is_numeric() const { return is_integer() || name.is_one_of(""float"", ""unrestricted float"", ""double"", ""unrestricted double""); }
+};
+
+CppType idl_type_name_to_cpp_type(Type const& type);
+
+struct UnionType : public Type {
+    UnionType() = default;
+
+    UnionType(String name, bool nullable, NonnullRefPtrVector<Type> member_types)
+        : Type(move(name), nullable)
+        , member_types(move(member_types))
+    {
+    }
+
+    virtual ~UnionType() override = default;
+
+    NonnullRefPtrVector<Type> member_types;
+
+    // https://webidl.spec.whatwg.org/#dfn-flattened-union-member-types
+    NonnullRefPtrVector<Type> flattened_member_types() const
+    {
+        // 1. Let T be the union type.
+
+        // 2. Initialize S to ∅.
+        NonnullRefPtrVector<Type> types;
+
+        // 3. For each member type U of T:
+        for (auto& type : member_types) {
+            // FIXME: 1. If U is an annotated type, then set U to be the inner type of U.
+
+            // 2. If U is a nullable type, then set U to be the inner type of U. (NOTE: Not necessary as nullable is stored with Type and not as a separate struct)
+
+            // 3. If U is a union type, then add to S the flattened member types of U.
+            if (is<UnionType>(type)) {
+                auto& union_member_type = verify_cast<UnionType>(type);
+                types.extend(union_member_type.flattened_member_types());
+            } else {
+                // 4. Otherwise, U is not a union type. Add U to S.
+                types.append(type);
+            }
+        }
+
+        // 4. Return S.
+        return types;
+    }
+
+    // https://webidl.spec.whatwg.org/#dfn-number-of-nullable-member-types
+    size_t number_of_nullable_member_types() const
+    {
+        // 1. Let T be the union type.
+
+        // 2. Initialize n to 0.
+        size_t num_nullable_member_types = 0;
+
+        // 3. For each member type U of T:
+        for (auto& type : member_types) {
+            // 1. If U is a nullable type, then:
+            if (type.nullable) {
+                // 1. Set n to n + 1.
+                ++num_nullable_member_types;
+
+                // 2. Set U to be the inner type of U. (NOTE: Not necessary as nullable is stored with Type and not as a separate struct)
+            }
+
+            // 2. If U is a union type, then:
+            if (is<UnionType>(type)) {
+                auto& union_member_type = verify_cast<UnionType>(type);
+
+                // 1. Let m be the number of nullable member types of U.
+                // 2. Set n to n + m.
+                num_nullable_member_types += union_member_type.number_of_nullable_member_types();
+            }
+        }
+
+        // 4. Return n.
+        return num_nullable_member_types;
+    }
+
+    // https://webidl.spec.whatwg.org/#dfn-includes-a-nullable-type
+    bool includes_nullable_type() const
+    {
+        // -> the type is a union type and its number of nullable member types is 1.
+        return number_of_nullable_member_types() == 1;
+    }
+
+    // -> https://webidl.spec.whatwg.org/#dfn-includes-undefined
+    bool includes_undefined() const
+    {
+        // -> the type is a union type and one of its member types includes undefined.
+        for (auto& type : member_types) {
+            if (is<UnionType>(type)) {
+                auto& union_type = verify_cast<UnionType>(type);
+                if (union_type.includes_undefined())
+                    return true;
+            }
+
+            if (type.name == ""undefined""sv)
+                return true;
+        }
+        return false;
+    }
+
+    String to_variant() const
+    {
+        StringBuilder builder;
+        builder.append(""Variant<"");
+
+        auto flattened_types = flattened_member_types();
+        for (size_t type_index = 0; type_index < flattened_types.size(); ++type_index) {
+            auto& type = flattened_types.at(type_index);
+
+            if (type_index > 0)
+                builder.append("", "");
+
+            auto cpp_type = idl_type_name_to_cpp_type(type);
+            builder.append(cpp_type.name);
+        }
+
+        if (includes_undefined())
+            builder.append("", Empty"");
+
+        builder.append('>');
+        return builder.to_string();
+    }
+};
+
+struct Parameter {
+    NonnullRefPtr<Type> type;
+    String name;
+    bool optional { false };
+    Optional<String> optional_default_value;
+    HashMap<String, String> extended_attributes;
+    bool variadic { false };
+};
+
+struct Function {
+    NonnullRefPtr<Type> return_type;
+    String name;
+    Vector<Parameter> parameters;
+    HashMap<String, String> extended_attributes;
+
+    size_t length() const { return get_function_length(*this); }
+};
+
+struct Constructor {
+    String name;
+    Vector<Parameter> parameters;
+
+    size_t length() const { return get_function_length(*this); }
+};
+
+struct Constant {
+    NonnullRefPtr<Type> type;
+    String name;
+    String value;
+};
+
+struct Attribute {
+    bool readonly { false };
+    NonnullRefPtr<Type> type;
+    String name;
+    HashMap<String, String> extended_attributes;
+
+    // Added for convenience after parsing
+    String getter_callback_name;
+    String setter_callback_name;
+};
+
+struct DictionaryMember {
+    bool required { false };
+    NonnullRefPtr<Type> type;
+    String name;
+    HashMap<String, String> extended_attributes;
+    Optional<String> default_value;
+};
+
+struct Dictionary {
+    String parent_name;
+    Vector<DictionaryMember> members;
+};
+
+struct Enumeration {
+    HashTable<String> values;
+    HashMap<String, String> translated_cpp_names;
+    String first_member;
+    bool is_original_definition { true };
+};
+
+struct Interface;
+
+struct ParameterizedType : public Type {
+    ParameterizedType() = default;
+
+    ParameterizedType(String name, bool nullable, NonnullRefPtrVector<Type> parameters)
+        : Type(move(name), nullable)
+        , parameters(move(parameters))
+    {
+    }
+
+    virtual ~ParameterizedType() override = default;
+
+    NonnullRefPtrVector<Type> parameters;
+
+    void generate_sequence_from_iterable(SourceGenerator& generator, String const& cpp_name, String const& iterable_cpp_name, String const& iterator_method_cpp_name, IDL::Interface const&, size_t recursion_depth) const;
+};
+
+struct Interface {
+    String name;
+    String parent_name;
+
+    HashMap<String, String> extended_attributes;
+
+    Vector<Attribute> attributes;
+    Vector<Constant> constants;
+    Vector<Constructor> constructors;
+    Vector<Function> functions;
+    Vector<Function> static_functions;
+    bool has_stringifier { false };
+    Optional<String> stringifier_attribute;
+    bool has_unscopable_member { false };
+
+    Optional<NonnullRefPtr<Type>> value_iterator_type;
+    Optional<Tuple<NonnullRefPtr<Type>, NonnullRefPtr<Type>>> pair_iterator_types;
+
+    Optional<Function> named_property_getter;
+    Optional<Function> named_property_setter;
+
+    Optional<Function> indexed_property_getter;
+    Optional<Function> indexed_property_setter;
+
+    Optional<Function> named_property_deleter;
+
+    HashMap<String, Dictionary> dictionaries;
+    HashMap<String, Enumeration> enumerations;
+
+    // Added for convenience after parsing
+    String wrapper_class;
+    String wrapper_base_class;
+    String fully_qualified_name;
+    String constructor_class;
+    String prototype_class;
+    String prototype_base_class;
+
+    String module_own_path;
+    HashTable<String> imported_paths;
+    NonnullOwnPtrVector<Interface> imported_modules;
+
+    // https://webidl.spec.whatwg.org/#dfn-support-indexed-properties
+    bool supports_indexed_properties() const { return indexed_property_getter.has_value(); }
+
+    // https://webidl.spec.whatwg.org/#dfn-support-named-properties
+    bool supports_named_properties() const { return named_property_getter.has_value(); }
+
+    // https://webidl.spec.whatwg.org/#dfn-legacy-platform-object
+    bool is_legacy_platform_object() const { return !extended_attributes.contains(""Global"") && (supports_indexed_properties() || supports_named_properties()); }
+};
+
+}
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/main.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/main.cpp
new file mode 100644
index 000000000000..2400156f8ab2
--- /dev/null
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/main.cpp
@@ -0,0 +1,168 @@
+/*
+ * Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2021, Linus Groh <linusg@serenityos.org>
+ * Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
+ * Copyright (c) 2022, Ali Mohammad Pur <mpfard@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include ""IDLParser.h""
+#include ""IDLTypes.h""
+#include <AK/Debug.h>
+#include <AK/LexicalPath.h>
+#include <LibCore/ArgsParser.h>
+#include <LibCore/File.h>
+
+extern Vector<StringView> s_header_search_paths;
+
+namespace IDL {
+void generate_constructor_header(IDL::Interface const&);
+void generate_constructor_implementation(IDL::Interface const&);
+void generate_prototype_header(IDL::Interface const&);
+void generate_prototype_implementation(IDL::Interface const&);
+void generate_header(IDL::Interface const&);
+void generate_implementation(IDL::Interface const&);
+void generate_iterator_prototype_header(IDL::Interface const&);
+void generate_iterator_prototype_implementation(IDL::Interface const&);
+void generate_iterator_header(IDL::Interface const&);
+void generate_iterator_implementation(IDL::Interface const&);
+}
+
+int main(int argc, char** argv)
+{
+    Core::ArgsParser args_parser;
+    StringView path = nullptr;
+    StringView import_base_path = nullptr;
+    bool header_mode = false;
+    bool implementation_mode = false;
+    bool constructor_header_mode = false;
+    bool constructor_implementation_mode = false;
+    bool prototype_header_mode = false;
+    bool prototype_implementation_mode = false;
+    bool iterator_header_mode = false;
+    bool iterator_implementation_mode = false;
+    bool iterator_prototype_header_mode = false;
+    bool iterator_prototype_implementation_mode = false;
+    args_parser.add_option(header_mode, ""Generate the wrapper .h file"", ""header"", 'H');
+    args_parser.add_option(implementation_mode, ""Generate the wrapper .cpp file"", ""implementation"", 'I');
+    args_parser.add_option(constructor_header_mode, ""Generate the constructor .h file"", ""constructor-header"", 'C');
+    args_parser.add_option(constructor_implementation_mode, ""Generate the constructor .cpp file"", ""constructor-implementation"", 'O');
+    args_parser.add_option(prototype_header_mode, ""Generate the prototype .h file"", ""prototype-header"", 'P');
+    args_parser.add_option(prototype_implementation_mode, ""Generate the prototype .cpp file"", ""prototype-implementation"", 'R');
+    args_parser.add_option(iterator_header_mode, ""Generate the iterator wrapper .h file"", ""iterator-header"", 0);
+    args_parser.add_option(iterator_implementation_mode, ""Generate the iterator wrapper .cpp file"", ""iterator-implementation"", 0);
+    args_parser.add_option(iterator_prototype_header_mode, ""Generate the iterator prototype .h file"", ""iterator-prototype-header"", 0);
+    args_parser.add_option(iterator_prototype_implementation_mode, ""Generate the iterator prototype .cpp file"", ""iterator-prototype-implementation"", 0);
+    args_parser.add_option(Core::ArgsParser::Option {
+        .requires_argument = true,
+        .help_string = ""Add a header search path passed to the compiler"",
+        .long_name = ""header-include-path"",
+        .short_name = 'i',
+        .value_name = ""path"",
+        .accept_value = [&](char const* s) {
+            s_header_search_paths.append(s);
+            return true;
+        },
+    });
+    args_parser.add_positional_argument(path, ""IDL file"", ""idl-file"");
+    args_parser.add_positional_argument(import_base_path, ""Import base path"", ""import-base-path"", Core::ArgsParser::Required::No);
+    args_parser.parse(argc, argv);
+
+    auto file_or_error = Core::File::open(path, Core::OpenMode::ReadOnly);
+    if (file_or_error.is_error()) {
+        warnln(""Failed to open {}: {}"", path, file_or_error.error());
+        return 1;
+    }
+
+    LexicalPath lexical_path(path);
+    auto& namespace_ = lexical_path.parts_view().at(lexical_path.parts_view().size() - 2);
+
+    auto data = file_or_error.value()->read_all();
+
+    if (import_base_path.is_null())
+        import_base_path = lexical_path.dirname();
+
+    auto interface = IDL::Parser(path, data, import_base_path).parse();
+
+    if (namespace_.is_one_of(""Crypto"", ""CSS"", ""DOM"", ""Encoding"", ""HTML"", ""UIEvents"", ""Geometry"", ""HighResolutionTime"", ""IntersectionObserver"", ""NavigationTiming"", ""RequestIdleCallback"", ""ResizeObserver"", ""SVG"", ""Selection"", ""XHR"", ""URL"")) {
+        StringBuilder builder;
+        builder.append(namespace_);
+        builder.append(""::"");
+        builder.append(interface->name);
+        interface->fully_qualified_name = builder.to_string();
+    } else {
+        interface->fully_qualified_name = interface->name;
+    }
+
+    if constexpr (WRAPPER_GENERATOR_DEBUG) {
+        dbgln(""Attributes:"");
+        for (auto& attribute : interface->attributes) {
+            dbgln(""  {}{}{} {}"",
+                attribute.readonly ? ""readonly "" : """",
+                attribute.type->name,
+                attribute.type->nullable ? ""?"" : """",
+                attribute.name);
+        }
+
+        dbgln(""Functions:"");
+        for (auto& function : interface->functions) {
+            dbgln(""  {}{} {}"",
+                function.return_type->name,
+                function.return_type->nullable ? ""?"" : """",
+                function.name);
+            for (auto& parameter : function.parameters) {
+                dbgln(""    {}{} {}"",
+                    parameter.type->name,
+                    parameter.type->nullable ? ""?"" : """",
+                    parameter.name);
+            }
+        }
+
+        dbgln(""Static Functions:"");
+        for (auto& function : interface->static_functions) {
+            dbgln(""  static {}{} {}"",
+                function.return_type->name,
+                function.return_type->nullable ? ""?"" : """",
+                function.name);
+            for (auto& parameter : function.parameters) {
+                dbgln(""    {}{} {}"",
+                    parameter.type->name,
+                    parameter.type->nullable ? ""?"" : """",
+                    parameter.name);
+            }
+        }
+    }
+
+    if (header_mode)
+        IDL::generate_header(*interface);
+
+    if (implementation_mode)
+        IDL::generate_implementation(*interface);
+
+    if (constructor_header_mode)
+        IDL::generate_constructor_header(*interface);
+
+    if (constructor_implementation_mode)
+        IDL::generate_constructor_implementation(*interface);
+
+    if (prototype_header_mode)
+        IDL::generate_prototype_header(*interface);
+
+    if (prototype_implementation_mode)
+        IDL::generate_prototype_implementation(*interface);
+
+    if (iterator_header_mode)
+        IDL::generate_iterator_header(*interface);
+
+    if (iterator_implementation_mode)
+        IDL::generate_iterator_implementation(*interface);
+
+    if (iterator_prototype_header_mode)
+        IDL::generate_iterator_prototype_header(*interface);
+
+    if (iterator_prototype_implementation_mode)
+        IDL::generate_iterator_prototype_implementation(*interface);
+
+    return 0;
+}"
6caaa2bfdb0bf26050c132293b03647c46a070c6,2020-08-13 00:11:13,Andreas Kling,filemanager: Remove one direct call to FileSystemModel from outside,False,Remove one direct call to FileSystemModel from outside,filemanager,"diff --git a/Applications/FileManager/DirectoryView.cpp b/Applications/FileManager/DirectoryView.cpp
index 0b3d83ec68b1..76e468a86266 100644
--- a/Applications/FileManager/DirectoryView.cpp
+++ b/Applications/FileManager/DirectoryView.cpp
@@ -355,3 +355,8 @@ void DirectoryView::update_statusbar()
 
     set_status_message(builder.to_string());
 }
+
+void DirectoryView::set_should_show_dotfiles(bool show_dotfiles)
+{
+    m_model->set_should_show_dotfiles(show_dotfiles);
+}
diff --git a/Applications/FileManager/DirectoryView.h b/Applications/FileManager/DirectoryView.h
index 9ff361eca259..389f5630bca2 100644
--- a/Applications/FileManager/DirectoryView.h
+++ b/Applications/FileManager/DirectoryView.h
@@ -110,6 +110,8 @@ class DirectoryView final : public GUI::StackWidget
         callback(*m_columns_view);
     }
 
+    void set_should_show_dotfiles(bool);
+
     GUI::FileSystemModel& model() { return *m_model; }
 
 private:
diff --git a/Applications/FileManager/main.cpp b/Applications/FileManager/main.cpp
index 0138c6be9a74..ea2be2f84986 100644
--- a/Applications/FileManager/main.cpp
+++ b/Applications/FileManager/main.cpp
@@ -678,7 +678,7 @@ int run_in_windowed_mode(RefPtr<Core::ConfigFile> config, String initial_locatio
     view_menu.add_action(*view_as_columns_action);
     view_menu.add_separator();
     view_menu.add_action(GUI::Action::create_checkable(""Show dotfiles"", { Mod_Ctrl, Key_H }, [&](auto& action) {
-        directory_view.model().set_should_show_dotfiles(action.is_checked());
+        directory_view.set_should_show_dotfiles(action.is_checked());
     }));
 
     auto& go_menu = menubar->add_menu(""Go"");"
860417fb4fb9917fd08a6df2d70ab5c22935cfa8,2021-07-17 00:14:48,Timothy Flynn,libjs: Ensure RegExpStringIterator keeps the RegExp matcher object alive,False,Ensure RegExpStringIterator keeps the RegExp matcher object alive,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/RegExpStringIterator.cpp b/Userland/Libraries/LibJS/Runtime/RegExpStringIterator.cpp
index 573e7bb32e24..ed5a0bcdd285 100644
--- a/Userland/Libraries/LibJS/Runtime/RegExpStringIterator.cpp
+++ b/Userland/Libraries/LibJS/Runtime/RegExpStringIterator.cpp
@@ -24,4 +24,10 @@ RegExpStringIterator::RegExpStringIterator(Object& prototype, Object& regexp_obj
 {
 }
 
+void RegExpStringIterator::visit_edges(Cell::Visitor& visitor)
+{
+    Object::visit_edges(visitor);
+    visitor.visit(&m_regexp_object);
+}
+
 }
diff --git a/Userland/Libraries/LibJS/Runtime/RegExpStringIterator.h b/Userland/Libraries/LibJS/Runtime/RegExpStringIterator.h
index 876dd796a91f..fec3bd44e36b 100644
--- a/Userland/Libraries/LibJS/Runtime/RegExpStringIterator.h
+++ b/Userland/Libraries/LibJS/Runtime/RegExpStringIterator.h
@@ -28,6 +28,8 @@ class RegExpStringIterator final : public Object {
     void set_done() { m_done = true; }
 
 private:
+    virtual void visit_edges(Cell::Visitor&) override;
+
     Object& m_regexp_object;
     String m_string;
     bool m_global { false };"
286dc6df7f589dd6bfcecf1ab62c900db768e9ab,2023-10-30 00:42:28,Andrew Kaster,libgfx: Remove ability to load fonts directly from a file path,False,Remove ability to load fonts directly from a file path,libgfx,"diff --git a/Userland/Libraries/LibGfx/Font/BitmapFont.cpp b/Userland/Libraries/LibGfx/Font/BitmapFont.cpp
index f3f5bd9fac4b..db950b5271cd 100644
--- a/Userland/Libraries/LibGfx/Font/BitmapFont.cpp
+++ b/Userland/Libraries/LibGfx/Font/BitmapFont.cpp
@@ -250,17 +250,6 @@ ErrorOr<NonnullRefPtr<BitmapFont>> BitmapFont::try_load_from_uri(StringView uri)
     return try_load_from_resource(TRY(Core::Resource::load_from_uri(uri)));
 }
 
-RefPtr<BitmapFont> BitmapFont::load_from_file(DeprecatedString const& path)
-{
-    return MUST(try_load_from_file(move(path)));
-}
-
-ErrorOr<NonnullRefPtr<BitmapFont>> BitmapFont::try_load_from_file(DeprecatedString const& path)
-{
-    auto mapped_file = TRY(Core::MappedFile::map(path));
-    return try_load_from_mapped_file(move(mapped_file));
-}
-
 ErrorOr<void> BitmapFont::write_to_file(DeprecatedString const& path)
 {
     auto stream = TRY(Core::File::open(path, Core::File::OpenMode::Write));
diff --git a/Userland/Libraries/LibGfx/Font/BitmapFont.h b/Userland/Libraries/LibGfx/Font/BitmapFont.h
index 333e60a37c53..60b6f794be34 100644
--- a/Userland/Libraries/LibGfx/Font/BitmapFont.h
+++ b/Userland/Libraries/LibGfx/Font/BitmapFont.h
@@ -31,10 +31,8 @@ class BitmapFont final : public Font {
     ErrorOr<NonnullRefPtr<BitmapFont>> unmasked_character_set() const;
 
     static NonnullRefPtr<BitmapFont> load_from_uri(StringView);
-    static RefPtr<BitmapFont> load_from_file(DeprecatedString const& path);
     static ErrorOr<NonnullRefPtr<BitmapFont>> try_load_from_uri(StringView);
     static ErrorOr<NonnullRefPtr<BitmapFont>> try_load_from_resource(NonnullRefPtr<Core::Resource>);
-    static ErrorOr<NonnullRefPtr<BitmapFont>> try_load_from_file(DeprecatedString const& path);
     static ErrorOr<NonnullRefPtr<BitmapFont>> try_load_from_mapped_file(NonnullOwnPtr<Core::MappedFile>);
     static ErrorOr<NonnullRefPtr<BitmapFont>> try_load_from_stream(FixedMemoryStream&);"
c132064ee9976d007bffb592ea8be19dd8584fb0,2022-12-16 14:29:56,Linus Groh,libjs: Convert new_private_environment() to NonnullGCPtr,False,Convert new_private_environment() to NonnullGCPtr,libjs,"diff --git a/Userland/Libraries/LibJS/AST.cpp b/Userland/Libraries/LibJS/AST.cpp
index 099b21d9c7e9..17ed5936e5a2 100644
--- a/Userland/Libraries/LibJS/AST.cpp
+++ b/Userland/Libraries/LibJS/AST.cpp
@@ -1852,7 +1852,7 @@ ThrowCompletionOr<ECMAScriptFunctionObject*> ClassExpression::class_definition_e
         MUST(class_environment->create_immutable_binding(vm, binding_name, true));
 
     auto* outer_private_environment = vm.running_execution_context().private_environment;
-    auto* class_private_environment = new_private_environment(vm, outer_private_environment);
+    auto class_private_environment = new_private_environment(vm, outer_private_environment);
 
     for (auto const& element : m_elements) {
         auto opt_private_name = element.private_bound_identifier();
diff --git a/Userland/Libraries/LibJS/Runtime/AbstractOperations.cpp b/Userland/Libraries/LibJS/Runtime/AbstractOperations.cpp
index e84438ac509f..f24e6cc3f6f5 100644
--- a/Userland/Libraries/LibJS/Runtime/AbstractOperations.cpp
+++ b/Userland/Libraries/LibJS/Runtime/AbstractOperations.cpp
@@ -435,7 +435,7 @@ NonnullGCPtr<FunctionEnvironment> new_function_environment(ECMAScriptFunctionObj
 }
 
 // 9.2.1.1 NewPrivateEnvironment ( outerPrivEnv ), https://tc39.es/ecma262/#sec-newprivateenvironment
-PrivateEnvironment* new_private_environment(VM& vm, PrivateEnvironment* outer)
+NonnullGCPtr<PrivateEnvironment> new_private_environment(VM& vm, PrivateEnvironment* outer)
 {
     // 1. Let names be a new empty List.
     // 2. Return the PrivateEnvironment Record { [[OuterPrivateEnvironment]]: outerPrivEnv, [[Names]]: names }.
diff --git a/Userland/Libraries/LibJS/Runtime/AbstractOperations.h b/Userland/Libraries/LibJS/Runtime/AbstractOperations.h
index 35daaf4a6c7a..5d3005739705 100644
--- a/Userland/Libraries/LibJS/Runtime/AbstractOperations.h
+++ b/Userland/Libraries/LibJS/Runtime/AbstractOperations.h
@@ -22,7 +22,7 @@ namespace JS {
 NonnullGCPtr<DeclarativeEnvironment> new_declarative_environment(Environment&);
 NonnullGCPtr<ObjectEnvironment> new_object_environment(Object&, bool is_with_environment, Environment*);
 NonnullGCPtr<FunctionEnvironment> new_function_environment(ECMAScriptFunctionObject&, Object* new_target);
-PrivateEnvironment* new_private_environment(VM& vm, PrivateEnvironment* outer);
+NonnullGCPtr<PrivateEnvironment> new_private_environment(VM& vm, PrivateEnvironment* outer);
 Environment& get_this_environment(VM&);
 bool can_be_held_weakly(Value);
 Object* get_super_constructor(VM&);"
8efafdfc128e8b0649e4ee3149813450c54c7f69,2020-02-23 15:40:52,Andreas Kling,ircclient: Modernize Core::Object usage,False,Modernize Core::Object usage,ircclient,"diff --git a/Applications/IRCClient/IRCAppWindow.cpp b/Applications/IRCClient/IRCAppWindow.cpp
index adc6f15a6f6c..80f9d8967cdb 100644
--- a/Applications/IRCClient/IRCAppWindow.cpp
+++ b/Applications/IRCClient/IRCAppWindow.cpp
@@ -50,6 +50,7 @@ IRCAppWindow& IRCAppWindow::the()
 }
 
 IRCAppWindow::IRCAppWindow()
+    : m_client(IRCClient::construct())
 {
     ASSERT(!s_the);
     s_the = this;
@@ -71,37 +72,37 @@ IRCAppWindow::~IRCAppWindow()
 
 void IRCAppWindow::update_title()
 {
-    set_title(String::format(""IRC Client: %s@%s:%d"", m_client.nickname().characters(), m_client.hostname().characters(), m_client.port()));
+    set_title(String::format(""IRC Client: %s@%s:%d"", m_client->nickname().characters(), m_client->hostname().characters(), m_client->port()));
 }
 
 void IRCAppWindow::setup_client()
 {
-    m_client.aid_create_window = [this](void* owner, IRCWindow::Type type, const String& name) {
+    m_client->aid_create_window = [this](void* owner, IRCWindow::Type type, const String& name) {
         return &create_window(owner, type, name);
     };
-    m_client.aid_get_active_window = [this] {
+    m_client->aid_get_active_window = [this] {
         return static_cast<IRCWindow*>(m_container->active_widget());
     };
-    m_client.aid_update_window_list = [this] {
+    m_client->aid_update_window_list = [this] {
         m_window_list->model()->update();
     };
-    m_client.on_nickname_changed = [this](const String&) {
+    m_client->on_nickname_changed = [this](const String&) {
         update_title();
     };
-    m_client.on_part_from_channel = [this](auto&) {
+    m_client->on_part_from_channel = [this](auto&) {
         update_part_action();
     };
 
-    if (m_client.hostname().is_empty()) {
+    if (m_client->hostname().is_empty()) {
         auto input_box = GUI::InputBox::construct(""Enter server:"", ""Connect to server"", this);
         auto result = input_box->exec();
         if (result == GUI::InputBox::ExecCancel)
             ::exit(0);
 
-        m_client.set_server(input_box->text_value(), 6667);
+        m_client->set_server(input_box->text_value(), 6667);
     }
     update_title();
-    bool success = m_client.connect();
+    bool success = m_client->connect();
     ASSERT(success);
 }
 
@@ -110,28 +111,28 @@ void IRCAppWindow::setup_actions()
     m_join_action = GUI::Action::create(""Join channel"", { Mod_Ctrl, Key_J }, Gfx::Bitmap::load_from_file(""/res/icons/16x16/irc-join.png""), [&](auto&) {
         auto input_box = GUI::InputBox::construct(""Enter channel name:"", ""Join channel"", this);
         if (input_box->exec() == GUI::InputBox::ExecOK && !input_box->text_value().is_empty())
-            m_client.handle_join_action(input_box->text_value());
+            m_client->handle_join_action(input_box->text_value());
     });
 
     m_part_action = GUI::Action::create(""Part from channel"", { Mod_Ctrl, Key_P }, Gfx::Bitmap::load_from_file(""/res/icons/16x16/irc-part.png""), [this](auto&) {
-        auto* window = m_client.current_window();
+        auto* window = m_client->current_window();
         if (!window || window->type() != IRCWindow::Type::Channel) {
             // FIXME: Perhaps this action should have been disabled instead of allowing us to activate it.
             return;
         }
-        m_client.handle_part_action(window->channel().name());
+        m_client->handle_part_action(window->channel().name());
     });
 
     m_whois_action = GUI::Action::create(""Whois user"", Gfx::Bitmap::load_from_file(""/res/icons/16x16/irc-whois.png""), [&](auto&) {
         auto input_box = GUI::InputBox::construct(""Enter nickname:"", ""IRC WHOIS lookup"", this);
         if (input_box->exec() == GUI::InputBox::ExecOK && !input_box->text_value().is_empty())
-            m_client.handle_whois_action(input_box->text_value());
+            m_client->handle_whois_action(input_box->text_value());
     });
 
     m_open_query_action = GUI::Action::create(""Open query"", { Mod_Ctrl, Key_O }, Gfx::Bitmap::load_from_file(""/res/icons/16x16/irc-open-query.png""), [&](auto&) {
         auto input_box = GUI::InputBox::construct(""Enter nickname:"", ""Open IRC query with..."", this);
         if (input_box->exec() == GUI::InputBox::ExecOK && !input_box->text_value().is_empty())
-            m_client.handle_open_query_action(input_box->text_value());
+            m_client->handle_open_query_action(input_box->text_value());
     });
 
     m_close_query_action = GUI::Action::create(""Close query"", { Mod_Ctrl, Key_D }, Gfx::Bitmap::load_from_file(""/res/icons/16x16/irc-close-query.png""), [](auto&) {
@@ -141,7 +142,7 @@ void IRCAppWindow::setup_actions()
     m_change_nick_action = GUI::Action::create(""Change nickname"", Gfx::Bitmap::load_from_file(""/res/icons/16x16/irc-nick.png""), [this](auto&) {
         auto input_box = GUI::InputBox::construct(""Enter nickname:"", ""Change nickname"", this);
         if (input_box->exec() == GUI::InputBox::ExecOK && !input_box->text_value().is_empty())
-            m_client.handle_change_nick_action(input_box->text_value());
+            m_client->handle_change_nick_action(input_box->text_value());
     });
 }
 
@@ -205,12 +206,12 @@ void IRCAppWindow::setup_widgets()
     m_window_list->set_headers_visible(false);
     m_window_list->set_alternating_row_colors(false);
     m_window_list->set_size_columns_to_fit_content(true);
-    m_window_list->set_model(m_client.client_window_list_model());
+    m_window_list->set_model(m_client->client_window_list_model());
     m_window_list->set_activates_on_selection(true);
     m_window_list->set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fill);
     m_window_list->set_preferred_size(100, 0);
     m_window_list->on_activation = [this](auto& index) {
-        set_active_window(m_client.window_at(index.row()));
+        set_active_window(m_client->window_at(index.row()));
     };
 
     m_container = GUI::StackWidget::construct(horizontal_container);
@@ -225,7 +226,7 @@ void IRCAppWindow::set_active_window(IRCWindow& window)
 {
     m_container->set_active_widget(&window);
     window.clear_unread_count();
-    auto index = m_window_list->model()->index(m_client.window_index(window));
+    auto index = m_window_list->model()->index(m_client->window_index(window));
     m_window_list->selection().set(index);
 }
 
diff --git a/Applications/IRCClient/IRCAppWindow.h b/Applications/IRCClient/IRCAppWindow.h
index 784fe9cbd113..1acb1886bd45 100644
--- a/Applications/IRCClient/IRCAppWindow.h
+++ b/Applications/IRCClient/IRCAppWindow.h
@@ -32,8 +32,8 @@
 #include <LibGUI/Window.h>
 
 class IRCAppWindow : public GUI::Window {
+    C_OBJECT(IRCAppWindow);
 public:
-    IRCAppWindow();
     virtual ~IRCAppWindow() override;
 
     static IRCAppWindow& the();
@@ -41,6 +41,8 @@ class IRCAppWindow : public GUI::Window {
     void set_active_window(IRCWindow&);
 
 private:
+    IRCAppWindow();
+
     void setup_client();
     void setup_actions();
     void setup_menus();
@@ -49,7 +51,7 @@ class IRCAppWindow : public GUI::Window {
     void update_part_action();
 
     IRCWindow& create_window(void* owner, IRCWindow::Type, const String& name);
-    IRCClient m_client;
+    NonnullRefPtr<IRCClient> m_client;
     RefPtr<GUI::StackWidget> m_container;
     RefPtr<GUI::TableView> m_window_list;
     RefPtr<GUI::Action> m_join_action;
diff --git a/Applications/IRCClient/IRCClient.h b/Applications/IRCClient/IRCClient.h
index 49d5393d1b8f..71dc41cea44d 100644
--- a/Applications/IRCClient/IRCClient.h
+++ b/Applications/IRCClient/IRCClient.h
@@ -45,7 +45,6 @@ class IRCClient final : public Core::Object {
     friend class IRCQuery;
 
 public:
-    IRCClient();
     virtual ~IRCClient() override;
 
     void set_server(const String& hostname, int port = 6667);
@@ -114,6 +113,8 @@ class IRCClient final : public Core::Object {
     void add_server_message(const String&, Color = Color::Black);
 
 private:
+    IRCClient();
+
     struct Message {
         String prefix;
         String command;
diff --git a/Applications/IRCClient/main.cpp b/Applications/IRCClient/main.cpp
index cbfe8386efa7..b5e681730ccd 100644
--- a/Applications/IRCClient/main.cpp
+++ b/Applications/IRCClient/main.cpp
@@ -43,9 +43,7 @@ int main(int argc, char** argv)
         return 1;
     }
 
-    IRCAppWindow app_window;
-    app_window.show();
-
-    printf(""Entering main loop...\n"");
+    auto app_window = IRCAppWindow::construct();
+    app_window->show();
     return app.exec();
 }"
a8c1d12e8406fbab94e16615bbf431ef9e4c3f8c,2024-11-12 00:50:39,Aliaksandr Kalenik,libweb: Fix percentage insets resolution for grid items,False,Fix percentage insets resolution for grid items,libweb,"diff --git a/Libraries/LibWeb/Layout/BlockFormattingContext.cpp b/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
index 513d0ef22168..1d4e0aa89096 100644
--- a/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
+++ b/Libraries/LibWeb/Layout/BlockFormattingContext.cpp
@@ -793,7 +793,8 @@ void BlockFormattingContext::layout_block_level_box(Box const& box, BlockContain
     m_margin_state.add_margin(box_state.margin_bottom);
     m_margin_state.update_block_waiting_for_final_y_position();
 
-    compute_inset(box);
+    auto const& block_container_state = m_state.get(block_container);
+    compute_inset(box, content_box_rect(block_container_state).size());
 
     // Now that our children are formatted we place the ListItemBox with the left space we remembered.
     if (is<ListItemBox>(box)) {
@@ -1012,7 +1013,8 @@ void BlockFormattingContext::layout_floating_box(Box const& box, BlockContainer
     auto& box_state = m_state.get_mutable(box);
     auto const& computed_values = box.computed_values();
 
-    resolve_vertical_box_model_metrics(box, m_state.get(block_container).content_width());
+    auto const& block_container_state = m_state.get(block_container);
+    resolve_vertical_box_model_metrics(box, block_container_state.content_width());
 
     compute_width(box, available_space);
 
@@ -1166,7 +1168,7 @@ void BlockFormattingContext::layout_floating_box(Box const& box, BlockContainer
     if (line_builder)
         line_builder->recalculate_available_space();
 
-    compute_inset(box);
+    compute_inset(box, content_box_rect(block_container_state).size());
 
     if (independent_formatting_context)
         independent_formatting_context->parent_context_did_dimension_child_root_box();
diff --git a/Libraries/LibWeb/Layout/FlexFormattingContext.cpp b/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
index 7bdf1623fbf2..adcf53bc3871 100644
--- a/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
+++ b/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
@@ -176,7 +176,7 @@ void FlexFormattingContext::run(AvailableSpace const& available_space)
             if (auto independent_formatting_context = layout_inside(item.box, LayoutMode::Normal, item.used_values.available_inner_space_or_constraints_from(m_available_space_for_items->space)))
                 independent_formatting_context->parent_context_did_dimension_child_root_box();
 
-            compute_inset(item.box);
+            compute_inset(item.box, content_box_rect(m_flex_container_state).size());
         }
     }
 }
diff --git a/Libraries/LibWeb/Layout/FormattingContext.cpp b/Libraries/LibWeb/Layout/FormattingContext.cpp
index 1e65532aa5e6..90d1b2d065f3 100644
--- a/Libraries/LibWeb/Layout/FormattingContext.cpp
+++ b/Libraries/LibWeb/Layout/FormattingContext.cpp
@@ -1328,7 +1328,7 @@ void FormattingContext::compute_height_for_absolutely_positioned_replaced_elemen
 }
 
 // https://www.w3.org/TR/css-position-3/#relpos-insets
-void FormattingContext::compute_inset(NodeWithStyleAndBoxModelMetrics const& box)
+void FormattingContext::compute_inset(NodeWithStyleAndBoxModelMetrics const& box, CSSPixelSize containing_block_size)
 {
     if (box.computed_values().position() != CSS::Positioning::Relative)
         return;
@@ -1363,8 +1363,8 @@ void FormattingContext::compute_inset(NodeWithStyleAndBoxModelMetrics const& box
     auto const& computed_values = box.computed_values();
 
     // FIXME: Respect the containing block's writing-mode.
-    resolve_two_opposing_insets(computed_values.inset().left(), computed_values.inset().right(), box_state.inset_left, box_state.inset_right, containing_block_width_for(box));
-    resolve_two_opposing_insets(computed_values.inset().top(), computed_values.inset().bottom(), box_state.inset_top, box_state.inset_bottom, containing_block_height_for(box));
+    resolve_two_opposing_insets(computed_values.inset().left(), computed_values.inset().right(), box_state.inset_left, box_state.inset_right, containing_block_size.width());
+    resolve_two_opposing_insets(computed_values.inset().top(), computed_values.inset().bottom(), box_state.inset_top, box_state.inset_bottom, containing_block_size.height());
 }
 
 // https://drafts.csswg.org/css-sizing-3/#fit-content-size
diff --git a/Libraries/LibWeb/Layout/FormattingContext.h b/Libraries/LibWeb/Layout/FormattingContext.h
index 3a3a5c4b4a20..2aba6433a70a 100644
--- a/Libraries/LibWeb/Layout/FormattingContext.h
+++ b/Libraries/LibWeb/Layout/FormattingContext.h
@@ -106,7 +106,7 @@ class FormattingContext {
 
     bool can_skip_is_anonymous_text_run(Box&);
 
-    void compute_inset(NodeWithStyleAndBoxModelMetrics const&);
+    void compute_inset(NodeWithStyleAndBoxModelMetrics const&, CSSPixelSize containing_block_size);
 
 protected:
     FormattingContext(Type, LayoutMode, LayoutState&, Box const&, FormattingContext* parent = nullptr);
diff --git a/Libraries/LibWeb/Layout/GridFormattingContext.cpp b/Libraries/LibWeb/Layout/GridFormattingContext.cpp
index 06795ae075c7..43c29c97e8ab 100644
--- a/Libraries/LibWeb/Layout/GridFormattingContext.cpp
+++ b/Libraries/LibWeb/Layout/GridFormattingContext.cpp
@@ -2060,8 +2060,9 @@ void GridFormattingContext::run(AvailableSpace const& available_space)
     for (auto& grid_item : m_grid_items) {
         auto& grid_item_box_state = m_state.get_mutable(grid_item.box);
         CSSPixelPoint margin_offset = { grid_item_box_state.margin_box_left(), grid_item_box_state.margin_box_top() };
-        grid_item_box_state.offset = get_grid_area_rect(grid_item).top_left() + margin_offset;
-        compute_inset(grid_item.box);
+        auto const grid_area_rect = get_grid_area_rect(grid_item);
+        grid_item_box_state.offset = grid_area_rect.top_left() + margin_offset;
+        compute_inset(grid_item.box, grid_area_rect.size());
 
         auto available_space_for_children = AvailableSpace(AvailableSize::make_definite(grid_item_box_state.content_width()), AvailableSize::make_definite(grid_item_box_state.content_height()));
         if (auto independent_formatting_context = layout_inside(grid_item.box, LayoutMode::Normal, available_space_for_children))
diff --git a/Libraries/LibWeb/Layout/InlineFormattingContext.cpp b/Libraries/LibWeb/Layout/InlineFormattingContext.cpp
index 3204f2f3de1f..3c6b39618bef 100644
--- a/Libraries/LibWeb/Layout/InlineFormattingContext.cpp
+++ b/Libraries/LibWeb/Layout/InlineFormattingContext.cpp
@@ -294,7 +294,7 @@ void InlineFormattingContext::generate_line_boxes()
         }
         case InlineLevelIterator::Item::Type::Element: {
             auto& box = verify_cast<Layout::Box>(*item.node);
-            compute_inset(box);
+            compute_inset(box, content_box_rect(m_containing_block_used_values).size());
             if (containing_block().computed_values().white_space() != CSS::WhiteSpace::Nowrap) {
                 auto minimum_space_needed_on_line = item.border_box_width();
                 if (item.margin_start < 0)
diff --git a/Libraries/LibWeb/Layout/InlineLevelIterator.cpp b/Libraries/LibWeb/Layout/InlineLevelIterator.cpp
index 7c9a3f8de1f4..333423e8f779 100644
--- a/Libraries/LibWeb/Layout/InlineLevelIterator.cpp
+++ b/Libraries/LibWeb/Layout/InlineLevelIterator.cpp
@@ -48,7 +48,7 @@ void InlineLevelIterator::enter_node_with_box_model_metrics(Layout::NodeWithStyl
     m_extra_leading_metrics->padding += used_values.padding_left;
 
     // Now's our chance to resolve the inset properties for this node.
-    m_inline_formatting_context.compute_inset(node);
+    m_inline_formatting_context.compute_inset(node, m_inline_formatting_context.content_box_rect(m_containing_block_used_values).size());
 
     m_box_model_node_stack.append(node);
 }
diff --git a/Tests/LibWeb/Layout/expected/grid/relative-position-grid-item-with-percentage-insets.txt b/Tests/LibWeb/Layout/expected/grid/relative-position-grid-item-with-percentage-insets.txt
new file mode 100644
index 000000000000..4088c378dfc1
--- /dev/null
+++ b/Tests/LibWeb/Layout/expected/grid/relative-position-grid-item-with-percentage-insets.txt
@@ -0,0 +1,54 @@
+Viewport <#document> at (0,0) content-size 800x600 children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x318 [BFC] children: not-inline
+    BlockContainer <body> at (8,8) content-size 784x302 children: not-inline
+      Box <div.grid-container> at (9,9) content-size 300x300 [GFC] children: not-inline
+        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
+          TextNode <#text>
+        Box <div.grid-item> at (20,20) content-size 123x123 flex-container(row) [FFC] children: not-inline
+          BlockContainer <(anonymous)> at (58.140625,73) content-size 46.71875x17 flex-item [BFC] children: inline
+            frag 0 from TextNode start: 0, length: 6, rect: [58.140625,73 46.71875x17] baseline: 13.296875
+                ""Item 1""
+            TextNode <#text>
+        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
+          TextNode <#text>
+        Box <div.grid-item.relative-item> at (247.5,97.5) content-size 123x123 positioned flex-container(row) [FFC] children: not-inline
+          BlockContainer <(anonymous)> at (284.40625,150.5) content-size 49.1875x17 flex-item [BFC] children: inline
+            frag 0 from TextNode start: 0, length: 6, rect: [284.40625,150.5 49.1875x17] baseline: 13.296875
+                ""Item 2""
+            TextNode <#text>
+        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
+          TextNode <#text>
+        Box <div.grid-item> at (20,175) content-size 123x123 flex-container(row) [FFC] children: not-inline
+          BlockContainer <(anonymous)> at (56.765625,228) content-size 49.46875x17 flex-item [BFC] children: inline
+            frag 0 from TextNode start: 0, length: 6, rect: [56.765625,228 49.46875x17] baseline: 13.296875
+                ""Item 3""
+            TextNode <#text>
+        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
+          TextNode <#text>
+        Box <div.grid-item> at (175,175) content-size 123x123 flex-container(row) [FFC] children: not-inline
+          BlockContainer <(anonymous)> at (212.4375,228) content-size 48.125x17 flex-item [BFC] children: inline
+            frag 0 from TextNode start: 0, length: 6, rect: [212.4375,228 48.125x17] baseline: 13.296875
+                ""Item 4""
+            TextNode <#text>
+        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
+          TextNode <#text>
+      BlockContainer <(anonymous)> at (8,310) content-size 784x0 children: inline
+        TextNode <#text>
+
+ViewportPaintable (Viewport<#document>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x318]
+    PaintableWithLines (BlockContainer<BODY>) [8,8 784x302]
+      PaintableBox (Box<DIV>.grid-container) [8,8 302x302] overflow: [9,9 372.5x300]
+        PaintableBox (Box<DIV>.grid-item) [9,9 145x145]
+          PaintableWithLines (BlockContainer(anonymous)) [58.140625,73 46.71875x17]
+            TextPaintable (TextNode<#text>)
+        PaintableBox (Box<DIV>.grid-item.relative-item) [236.5,86.5 145x145]
+          PaintableWithLines (BlockContainer(anonymous)) [284.40625,150.5 49.1875x17]
+            TextPaintable (TextNode<#text>)
+        PaintableBox (Box<DIV>.grid-item) [9,164 145x145]
+          PaintableWithLines (BlockContainer(anonymous)) [56.765625,228 49.46875x17]
+            TextPaintable (TextNode<#text>)
+        PaintableBox (Box<DIV>.grid-item) [164,164 145x145]
+          PaintableWithLines (BlockContainer(anonymous)) [212.4375,228 48.125x17]
+            TextPaintable (TextNode<#text>)
+      PaintableWithLines (BlockContainer(anonymous)) [8,310 784x0]
diff --git a/Tests/LibWeb/Layout/input/grid/relative-position-grid-item-with-percentage-insets.html b/Tests/LibWeb/Layout/input/grid/relative-position-grid-item-with-percentage-insets.html
new file mode 100644
index 000000000000..6f4883c63e3b
--- /dev/null
+++ b/Tests/LibWeb/Layout/input/grid/relative-position-grid-item-with-percentage-insets.html
@@ -0,0 +1,33 @@
+<!DOCTYPE html>
+<style>
+.grid-container {
+    display: grid;
+    grid-template-columns: repeat(2, 1fr);
+    gap: 10px;
+    width: 300px;
+    height: 300px;
+    border: 1px solid #ccc;
+}
+
+.grid-item {
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    background-color: #eee;
+    border: 1px solid #aaa;
+    padding: 10px;
+}
+
+.relative-item {
+    position: relative;
+    left: 50%;
+    top: 50%;
+    background-color: #cce;
+}
+</style>
+<div class=""grid-container"">
+    <div class=""grid-item"">Item 1</div>
+    <div class=""grid-item relative-item"">Item 2</div>
+    <div class=""grid-item"">Item 3</div>
+    <div class=""grid-item"">Item 4</div>
+</div>"
6fcce077bb849e780aa587ad8f6b52f85ccf9be0,2020-06-17 18:32:03,Sergey Bugaev,userland: Fix a crash in chown(1),False,Fix a crash in chown(1),userland,"diff --git a/Userland/chown.cpp b/Userland/chown.cpp
index 54809aecd54f..0dba8b7f7408 100644
--- a/Userland/chown.cpp
+++ b/Userland/chown.cpp
@@ -72,7 +72,7 @@ int main(int argc, char** argv)
             new_gid = number.value();
         } else {
             auto* group = getgrnam(parts[1].characters());
-            if (!new_gid) {
+            if (!group) {
                 fprintf(stderr, ""Unknown group '%s'\n"", parts[1].characters());
                 return 1;
             }"
86994336a72db1f2c49baa40162730baa4599732,2021-07-12 02:49:56,Sam Atkins,libweb: Correct parsing invalid list of declarations,False,Correct parsing invalid list of declarations,libweb,"diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
index d195cadf0529..a222aab90917 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -890,8 +890,10 @@ Vector<DeclarationOrAtRule> Parser::consume_a_list_of_declarations(TokenStream<T
         log_parse_error();
         tokens.reconsume_current_input_token();
         auto peek = tokens.peek_token();
-        if (!(peek.is(Token::Type::Semicolon) || peek.is(Token::Type::EndOfFile))) {
+        while (!(peek.is(Token::Type::Semicolon) || peek.is(Token::Type::EndOfFile))) {
+            dbgln(""Discarding token: '{}'"", peek.to_debug_string());
             (void)consume_a_component_value(tokens);
+            peek = tokens.peek_token();
         }
     }"
0384eb41ae0472f2d2cd3337f413c131f4c04c86,2020-12-25 01:20:30,Linus Groh,taskbar: Use GUI::FileIconProvider for app icons,False,Use GUI::FileIconProvider for app icons,taskbar,"diff --git a/Services/Taskbar/TaskbarWindow.cpp b/Services/Taskbar/TaskbarWindow.cpp
index cbfe0c8a01eb..4230e13353e7 100644
--- a/Services/Taskbar/TaskbarWindow.cpp
+++ b/Services/Taskbar/TaskbarWindow.cpp
@@ -32,7 +32,9 @@
 #include <LibGUI/BoxLayout.h>
 #include <LibGUI/Button.h>
 #include <LibGUI/Desktop.h>
+#include <LibGUI/FileIconProvider.h>
 #include <LibGUI/Frame.h>
+#include <LibGUI/Icon.h>
 #include <LibGUI/Painter.h>
 #include <LibGUI/Window.h>
 #include <LibGUI/WindowServerConnection.h>
@@ -114,14 +116,14 @@ void TaskbarWindow::create_quick_launch_bar()
         auto af = Core::ConfigFile::open(af_path);
         auto app_executable = af->read_entry(""App"", ""Executable"");
         auto app_name = af->read_entry(""App"", ""Name"");
-        auto app_icon_path = af->read_entry(""Icons"", ""16x16"");
+        auto app_icon = GUI::FileIconProvider::icon_for_path(app_executable).bitmap_for_size(16);
 
         auto& button = quick_launch_bar.add<GUI::Button>();
         button.set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fixed);
         button.set_preferred_size(24, 24);
         button.set_button_style(Gfx::ButtonStyle::CoolBar);
 
-        button.set_icon(Gfx::Bitmap::load_from_file(app_icon_path));
+        button.set_icon(app_icon);
         button.set_tooltip(app_name);
         button.on_click = [app_executable](auto) {
             pid_t pid = fork();"
8f015a18a5e2e09a7ccb6afed552f87535b658c5,2023-02-18 10:59:51,Jelle Raaijmakers,libjs: Dereference intrinsic accessor before deleting it,False,Dereference intrinsic accessor before deleting it,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/Object.cpp b/Userland/Libraries/LibJS/Runtime/Object.cpp
index 839e33131664..88015c463ef0 100644
--- a/Userland/Libraries/LibJS/Runtime/Object.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Object.cpp
@@ -1007,12 +1007,13 @@ static Optional<Object::IntrinsicAccessor> find_intrinsic_accessor(Object const*
     if (intrinsics == s_intrinsics.end())
         return {};
 
-    auto accessor = intrinsics->value.find(property_key.as_string());
-    if (accessor == intrinsics->value.end())
+    auto accessor_iterator = intrinsics->value.find(property_key.as_string());
+    if (accessor_iterator == intrinsics->value.end())
         return {};
 
-    intrinsics->value.remove(accessor);
-    return move(accessor->value);
+    auto accessor = accessor_iterator->value;
+    intrinsics->value.remove(accessor_iterator);
+    return accessor;
 }
 
 Optional<ValueAndAttributes> Object::storage_get(PropertyKey const& property_key) const"
956824afe2f35a7bc05fc27cb285914c6cebb30b,2022-01-28 22:35:52,Idan Horowitz,kernel: Use memset instead of fast_u32_fill in MemoryManager zero fills,False,Use memset instead of fast_u32_fill in MemoryManager zero fills,kernel,"diff --git a/Kernel/Memory/MemoryManager.cpp b/Kernel/Memory/MemoryManager.cpp
index d914c723d587..1b72cc4d243d 100644
--- a/Kernel/Memory/MemoryManager.cpp
+++ b/Kernel/Memory/MemoryManager.cpp
@@ -957,7 +957,7 @@ NonnullRefPtrVector<PhysicalPage> MemoryManager::allocate_contiguous_supervisor_
         if (region_or_error.is_error())
             TODO();
         auto cleanup_region = region_or_error.release_value();
-        fast_u32_fill((u32*)cleanup_region->vaddr().as_ptr(), 0, (PAGE_SIZE * count) / sizeof(u32));
+        memset(cleanup_region->vaddr().as_ptr(), 0, PAGE_SIZE * count);
     }
     m_system_memory_info.super_physical_pages_used += count;
     return physical_pages;
@@ -974,7 +974,9 @@ RefPtr<PhysicalPage> MemoryManager::allocate_supervisor_physical_page()
         return {};
     }
 
-    fast_u32_fill((u32*)page->paddr().offset(physical_to_virtual_offset).as_ptr(), 0, PAGE_SIZE / sizeof(u32));
+    auto* ptr = quickmap_page(*page);
+    memset(ptr, 0, PAGE_SIZE);
+    unquickmap_page();
     ++m_system_memory_info.super_physical_pages_used;
     return page;
 }"
a353ceecf13b6f156a078e32f1ddf1d21366934c,2022-04-21 15:19:48,Andreas Kling,libc: Implement errno via a __errno_location() function,False,Implement errno via a __errno_location() function,libc,"diff --git a/Userland/Libraries/LibC/errno.h b/Userland/Libraries/LibC/errno.h
index ad4b25136611..e3e8e84a40f4 100644
--- a/Userland/Libraries/LibC/errno.h
+++ b/Userland/Libraries/LibC/errno.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -29,6 +29,7 @@ extern int errno;
 extern __thread int errno;
 #endif
 
-#define errno errno
+int* __errno_location() __attribute__((const));
+#define errno (*__errno_location())
 
 __END_DECLS
diff --git a/Userland/Libraries/LibC/libcinit.cpp b/Userland/Libraries/LibC/libcinit.cpp
index 38cab1bdaa34..aeed350bec5e 100644
--- a/Userland/Libraries/LibC/libcinit.cpp
+++ b/Userland/Libraries/LibC/libcinit.cpp
@@ -1,20 +1,21 @@
 /*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
 #include <AK/Types.h>
 #include <assert.h>
+#include <errno.h>
 #include <sys/internals.h>
 #include <unistd.h>
 
 extern ""C"" {
 
 #ifdef NO_TLS
-int errno;
+int errno_storage;
 #else
-__thread int errno;
+__thread int errno_storage;
 #endif
 char** environ;
 bool __environ_is_malloced;
@@ -24,6 +25,11 @@ void* __auxiliary_vector;
 
 static void __auxiliary_vector_init();
 
+int* __errno_location()
+{
+    return &errno_storage;
+}
+
 void __libc_init()
 {
     __auxiliary_vector_init();"
62491cda0b9e8aa55067aa794d58a79b965f6f46,2022-06-30 01:51:50,Luke Wilde,libweb: Use CSO if running script is null in HostPromiseRejectionTracker,False,Use CSO if running script is null in HostPromiseRejectionTracker,libweb,"diff --git a/Base/res/html/misc/unhandledpromisetest.html b/Base/res/html/misc/unhandledpromisetest.html
new file mode 100644
index 000000000000..3838ff17dcce
--- /dev/null
+++ b/Base/res/html/misc/unhandledpromisetest.html
@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html>
+<head>
+  <title>Unhandled Promise rejection with no [[ScriptOrModule]] for the current execution context</title>
+</head>
+<body>
+  <button onclick=""
+    Promise.reject(new Error('Success!'));
+    window.timer = setTimeout(() => {
+      const element = document.createElement('p');
+      element.innerText = 'Did not receieve unhandledrejection event in 100ms.';
+      element.style.color = 'red';
+      document.body.appendChild(element);
+    }, 100)
+  "">
+    Click me to cause an unhandled promise rejection.
+  </button>
+
+  <script>
+    window.onunhandledrejection = (rejectionEvent) => {
+      clearTimeout(window.timer);
+      const element = document.createElement(""p"");
+      element.innerText = rejectionEvent.reason.message;
+      element.style.color = ""green"";
+      document.body.appendChild(element);
+    }
+  </script>
+</body>
+</html>
diff --git a/Userland/Libraries/LibWeb/Bindings/MainThreadVM.cpp b/Userland/Libraries/LibWeb/Bindings/MainThreadVM.cpp
index e1209646bb0a..9329b77ea66d 100644
--- a/Userland/Libraries/LibWeb/Bindings/MainThreadVM.cpp
+++ b/Userland/Libraries/LibWeb/Bindings/MainThreadVM.cpp
@@ -55,8 +55,7 @@ JS::VM& main_thread_vm()
         vm->host_promise_rejection_tracker = [](JS::Promise& promise, JS::Promise::RejectionOperation operation) {
             // 1. Let script be the running script.
             //    The running script is the script in the [[HostDefined]] field in the ScriptOrModule component of the running JavaScript execution context.
-            // FIXME: This currently assumes there's only a ClassicScript.
-            HTML::ClassicScript* script { nullptr };
+            HTML::Script* script { nullptr };
             vm->running_execution_context().script_or_module.visit(
                 [&script](WeakPtr<JS::Script>& js_script) {
                     script = verify_cast<HTML::ClassicScript>(js_script->host_defined());
@@ -67,19 +66,17 @@ JS::VM& main_thread_vm()
                 [](Empty) {
                 });
 
-            // If there's no script, we're out of luck. Return.
-            // FIXME: This can happen from JS::NativeFunction, which makes its callee contexts [[ScriptOrModule]] null.
-            if (!script) {
-                dbgln(""FIXME: Unable to process unhandled promise rejection in host_promise_rejection_tracker as the running script is null."");
-                return;
+            // 2. If script is a classic script and script's muted errors is true, then return.
+            // NOTE: is<T>() returns false if nullptr is passed.
+            if (is<HTML::ClassicScript>(script)) {
+                auto const& classic_script = static_cast<HTML::ClassicScript const&>(*script);
+                if (classic_script.muted_errors() == HTML::ClassicScript::MutedErrors::Yes)
+                    return;
             }
 
-            // 2. If script's muted errors is true, terminate these steps.
-            if (script->muted_errors() == HTML::ClassicScript::MutedErrors::Yes)
-                return;
-
-            // 3. Let settings object be script's settings object.
-            auto& settings_object = script->settings_object();
+            // 3. Let settings object be the current settings object.
+            // 4. If script is not null, then set settings object to script's settings object.
+            auto& settings_object = script ? script->settings_object() : HTML::current_settings_object();
 
             switch (operation) {
             case JS::Promise::RejectionOperation::Reject:"
81bdb20c61922559e36c660311be1c72838e17d4,2021-10-23 21:31:51,Idan Horowitz,libjs: Convert the PromiseResolve AO to ThrowCompletionOr,False,Convert the PromiseResolve AO to ThrowCompletionOr,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/Promise.cpp b/Userland/Libraries/LibJS/Runtime/Promise.cpp
index cda7c4de4df4..dc2a79a26f64 100644
--- a/Userland/Libraries/LibJS/Runtime/Promise.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Promise.cpp
@@ -19,16 +19,16 @@
 namespace JS {
 
 // 27.2.4.7.1 PromiseResolve ( C, x ), https://tc39.es/ecma262/#sec-promise-resolve
-Object* promise_resolve(GlobalObject& global_object, Object& constructor, Value value)
+ThrowCompletionOr<Object*> promise_resolve(GlobalObject& global_object, Object& constructor, Value value)
 {
     auto& vm = global_object.vm();
     if (value.is_object() && is<Promise>(value.as_object())) {
-        auto value_constructor = TRY_OR_DISCARD(value.as_object().get(vm.names.constructor));
+        auto value_constructor = TRY(value.as_object().get(vm.names.constructor));
         if (same_value(value_constructor, &constructor))
             return &static_cast<Promise&>(value.as_object());
     }
-    auto promise_capability = TRY_OR_DISCARD(new_promise_capability(global_object, &constructor));
-    [[maybe_unused]] auto result = TRY_OR_DISCARD(vm.call(*promise_capability.resolve, js_undefined(), value));
+    auto promise_capability = TRY(new_promise_capability(global_object, &constructor));
+    (void)TRY(vm.call(*promise_capability.resolve, js_undefined(), value));
     return promise_capability.promise;
 }
 
diff --git a/Userland/Libraries/LibJS/Runtime/Promise.h b/Userland/Libraries/LibJS/Runtime/Promise.h
index 0f1c927c789c..60db733a96e4 100644
--- a/Userland/Libraries/LibJS/Runtime/Promise.h
+++ b/Userland/Libraries/LibJS/Runtime/Promise.h
@@ -11,7 +11,7 @@
 
 namespace JS {
 
-Object* promise_resolve(GlobalObject&, Object& constructor, Value);
+ThrowCompletionOr<Object*> promise_resolve(GlobalObject&, Object& constructor, Value);
 
 class Promise final : public Object {
     JS_OBJECT(Promise, Object);
diff --git a/Userland/Libraries/LibJS/Runtime/PromiseConstructor.cpp b/Userland/Libraries/LibJS/Runtime/PromiseConstructor.cpp
index c0d231a5f0f2..51407f1d8a1a 100644
--- a/Userland/Libraries/LibJS/Runtime/PromiseConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/PromiseConstructor.cpp
@@ -357,7 +357,7 @@ JS_DEFINE_OLD_NATIVE_FUNCTION(PromiseConstructor::resolve)
 {
     auto* constructor = TRY_OR_DISCARD(vm.this_value(global_object).to_object(global_object));
     auto value = vm.argument(0);
-    return promise_resolve(global_object, *constructor, value);
+    return TRY_OR_DISCARD(promise_resolve(global_object, *constructor, value));
 }
 
 // 27.2.4.8 get Promise [ @@species ], https://tc39.es/ecma262/#sec-get-promise-@@species
diff --git a/Userland/Libraries/LibJS/Runtime/PromisePrototype.cpp b/Userland/Libraries/LibJS/Runtime/PromisePrototype.cpp
index 109deba9d2e2..a0041bdee2de 100644
--- a/Userland/Libraries/LibJS/Runtime/PromisePrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/PromisePrototype.cpp
@@ -72,9 +72,7 @@ JS_DEFINE_OLD_NATIVE_FUNCTION(PromisePrototype::finally)
             auto& on_finally = const_cast<FunctionObject&>(*on_finally_handle.cell());
             auto value = vm.argument(0);
             auto result = TRY(vm.call(on_finally, js_undefined()));
-            auto* promise = promise_resolve(global_object, constructor, result);
-            if (auto* exception = vm.exception())
-                return throw_completion(exception->value());
+            auto* promise = TRY(promise_resolve(global_object, constructor, result));
             auto* value_thunk = NativeFunction::create(global_object, """", [value](auto&, auto&) -> ThrowCompletionOr<Value> {
                 return value;
             });
@@ -88,9 +86,7 @@ JS_DEFINE_OLD_NATIVE_FUNCTION(PromisePrototype::finally)
             auto& on_finally = const_cast<FunctionObject&>(*on_finally_handle.cell());
             auto reason = vm.argument(0);
             auto result = TRY(vm.call(on_finally, js_undefined()));
-            auto* promise = promise_resolve(global_object, constructor, result);
-            if (auto* exception = vm.exception())
-                return throw_completion(exception->value());
+            auto* promise = TRY(promise_resolve(global_object, constructor, result));
             auto* thrower = NativeFunction::create(global_object, """", [reason](auto& vm, auto& global_object) -> ThrowCompletionOr<Value> {
                 vm.throw_exception(global_object, reason);
                 return throw_completion(reason);"
673fc02ac5ab92f8fe93b4cd831ec65c00a76654,2021-09-12 17:27:17,Timothy Flynn,libjs: Move locale_relevant_extension_keys to Intl.Locale,False,Move locale_relevant_extension_keys to Intl.Locale,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/Intl/Locale.cpp b/Userland/Libraries/LibJS/Runtime/Intl/Locale.cpp
index 23c7be195d84..130245699f44 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/Locale.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/Locale.cpp
@@ -15,6 +15,18 @@ Locale* Locale::create(GlobalObject& global_object, Unicode::LocaleID const& loc
     return global_object.heap().allocate<Locale>(global_object, locale_id, *global_object.intl_locale_prototype());
 }
 
+Vector<StringView> const& Locale::relevant_extension_keys()
+{
+    // 14.2.2 Internal slots, https://tc39.es/ecma402/#sec-intl.locale-internal-slots
+    // The value of the [[RelevantExtensionKeys]] internal slot is « ""ca"", ""co"", ""hc"", ""kf"", ""kn"", ""nu"" ».
+    // If %Collator%.[[RelevantExtensionKeys]] does not contain ""kf"", then remove ""kf"" from %Locale%.[[RelevantExtensionKeys]].
+    // If %Collator%.[[RelevantExtensionKeys]] does not contain ""kn"", then remove ""kn"" from %Locale%.[[RelevantExtensionKeys]].
+
+    // FIXME: We do not yet have an Intl.Collator object. For now, we behave as if ""kf"" and ""kn"" exist, as test262 depends on it.
+    static Vector<StringView> relevant_extension_keys { ""ca""sv, ""co""sv, ""hc""sv, ""kf""sv, ""kn""sv, ""nu""sv };
+    return relevant_extension_keys;
+}
+
 // 14 Locale Objects, https://tc39.es/ecma402/#locale-objects
 Locale::Locale(Object& prototype)
     : Object(prototype)
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/Locale.h b/Userland/Libraries/LibJS/Runtime/Intl/Locale.h
index 480a0ffc98f5..5d4213a8f3ce 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/Locale.h
+++ b/Userland/Libraries/LibJS/Runtime/Intl/Locale.h
@@ -8,6 +8,7 @@
 
 #include <AK/Optional.h>
 #include <AK/String.h>
+#include <AK/Vector.h>
 #include <LibJS/Runtime/Object.h>
 #include <LibJS/Runtime/Value.h>
 #include <LibUnicode/Forward.h>
@@ -20,6 +21,8 @@ class Locale final : public Object {
 public:
     static Locale* create(GlobalObject&, Unicode::LocaleID const&);
 
+    static Vector<StringView> const& relevant_extension_keys(); // [[RelevantExtensionKeys]]
+
     Locale(Object& prototype);
     Locale(Unicode::LocaleID const&, Object& prototype);
     virtual ~Locale() override = default;
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/LocaleConstructor.cpp b/Userland/Libraries/LibJS/Runtime/Intl/LocaleConstructor.cpp
index 12a97b9be0aa..338c32cd8147 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/LocaleConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/LocaleConstructor.cpp
@@ -25,18 +25,6 @@ struct LocaleAndKeys {
     Optional<String> nu;
 };
 
-static Vector<StringView> const& locale_relevant_extension_keys()
-{
-    // 14.2.2 Internal slots, https://tc39.es/ecma402/#sec-intl.locale-internal-slots
-    // The value of the [[RelevantExtensionKeys]] internal slot is « ""ca"", ""co"", ""hc"", ""kf"", ""kn"", ""nu"" ».
-    // If %Collator%.[[RelevantExtensionKeys]] does not contain ""kf"", then remove ""kf"" from %Locale%.[[RelevantExtensionKeys]].
-    // If %Collator%.[[RelevantExtensionKeys]] does not contain ""kn"", then remove ""kn"" from %Locale%.[[RelevantExtensionKeys]].
-
-    // FIXME: We do not yet have an Intl.Collator object. For now, we behave as if ""kf"" and ""kn"" exist, as test262 depends on it.
-    static Vector<StringView> relevant_extension_keys { ""ca""sv, ""co""sv, ""hc""sv, ""kf""sv, ""kn""sv, ""nu""sv };
-    return relevant_extension_keys;
-}
-
 // Note: This is not an AO in the spec. This just serves to abstract very similar steps in ApplyOptionsToTag and the Intl.Locale constructor.
 static Optional<String> get_string_option(GlobalObject& global_object, Object const& options, PropertyName const& property, Function<bool(StringView)> validator, Vector<StringView> const& values = {})
 {
@@ -278,7 +266,7 @@ Value LocaleConstructor::construct(FunctionObject& new_target)
     auto options_value = vm.argument(1);
 
     // 2. Let relevantExtensionKeys be %Locale%.[[RelevantExtensionKeys]].
-    auto const& relevant_extension_keys = locale_relevant_extension_keys();
+    auto const& relevant_extension_keys = Locale::relevant_extension_keys();
 
     // 3. Let internalSlotsList be « [[InitializedLocale]], [[Locale]], [[Calendar]], [[Collation]], [[HourCycle]], [[NumberingSystem]] ».
     // 4. If relevantExtensionKeys contains ""kf"", then"
d1dd753a95540f8b573f9bcf6313e28d01e369dd,2023-03-13 22:05:17,kleines Filmröllchen,libaudio: Add a formatter for LoaderError,False,Add a formatter for LoaderError,libaudio,"diff --git a/Userland/Libraries/LibAudio/LoaderError.h b/Userland/Libraries/LibAudio/LoaderError.h
index 9f31b6afad17..b967b8f127e1 100644
--- a/Userland/Libraries/LibAudio/LoaderError.h
+++ b/Userland/Libraries/LibAudio/LoaderError.h
@@ -65,6 +65,36 @@ struct LoaderError {
 
 }
 
+namespace AK {
+
+template<>
+struct Formatter<Audio::LoaderError> : Formatter<FormatString> {
+    ErrorOr<void> format(FormatBuilder& builder, Audio::LoaderError const& error)
+    {
+        StringView category;
+        switch (error.category) {
+        case Audio::LoaderError::Category::Unknown:
+            category = ""Unknown""sv;
+            break;
+        case Audio::LoaderError::Category::IO:
+            category = ""I/O""sv;
+            break;
+        case Audio::LoaderError::Category::Format:
+            category = ""Format""sv;
+            break;
+        case Audio::LoaderError::Category::Internal:
+            category = ""Internal""sv;
+            break;
+        case Audio::LoaderError::Category::Unimplemented:
+            category = ""Unimplemented""sv;
+            break;
+        }
+        return Formatter<FormatString>::format(builder, ""{} error: {} (at {})""sv, category, error.description, error.index);
+    }
+};
+
+}
+
 // Convenience TRY-like macro to convert an Error to a LoaderError
 #define LOADER_TRY(expression)                                                                       \
     ({                                                                                               \"
3634749d98a69a09281e638b57cb7139d3c34b98,2023-09-16 20:23:32,Aliaksandr Kalenik,libweb: Update `Window::open_impl()` to use navigables,False,Update `Window::open_impl()` to use navigables,libweb,"diff --git a/Userland/Libraries/LibWeb/HTML/Navigable.h b/Userland/Libraries/LibWeb/HTML/Navigable.h
index 4f422fa4711d..032273e66d7d 100644
--- a/Userland/Libraries/LibWeb/HTML/Navigable.h
+++ b/Userland/Libraries/LibWeb/HTML/Navigable.h
@@ -149,6 +149,8 @@ class Navigable : public JS::Cell {
     void set_needs_display();
     void set_needs_display(CSSPixelRect const&);
 
+    void set_is_popup(TokenizedFeature::Popup is_popup) { m_is_popup = is_popup; }
+
 protected:
     Navigable();
 
@@ -157,6 +159,9 @@ class Navigable : public JS::Cell {
     // https://html.spec.whatwg.org/multipage/browsing-the-web.html#ongoing-navigation
     Variant<Empty, Traversal, String> m_ongoing_navigation;
 
+    // https://html.spec.whatwg.org/multipage/browsers.html#is-popup
+    TokenizedFeature::Popup m_is_popup { TokenizedFeature::Popup::No };
+
 private:
     bool allowed_by_sandboxing_to_navigate(Navigable const& target, SourceSnapshotParams const&);
     TargetSnapshotParams snapshot_target_snapshot_params();
diff --git a/Userland/Libraries/LibWeb/HTML/Window.cpp b/Userland/Libraries/LibWeb/HTML/Window.cpp
index a87a8956ae7e..7e1a80989667 100644
--- a/Userland/Libraries/LibWeb/HTML/Window.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Window.cpp
@@ -30,7 +30,6 @@
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/DOM/Event.h>
 #include <LibWeb/DOM/EventDispatcher.h>
-#include <LibWeb/Fetch/Infrastructure/HTTP/Requests.h>
 #include <LibWeb/HTML/BrowsingContext.h>
 #include <LibWeb/HTML/CustomElements/CustomElementRegistry.h>
 #include <LibWeb/HTML/EventHandler.h>
@@ -296,18 +295,15 @@ static TokenizedFeature::Popup check_if_a_popup_window_is_requested(OrderedHashM
     return TokenizedFeature::Popup::No;
 }
 
-// FIXME: This is based on the old 'browsing context' concept, which was replaced with 'navigable'
 // https://html.spec.whatwg.org/multipage/window-object.html#window-open-steps
 WebIDL::ExceptionOr<JS::GCPtr<WindowProxy>> Window::open_impl(StringView url, StringView target, StringView features)
 {
-    auto& vm = this->vm();
-
     // 1. If the event loop's termination nesting level is nonzero, return null.
     if (main_thread_event_loop().termination_nesting_level() != 0)
         return nullptr;
 
-    // 2. Let source browsing context be the entry global object's browsing context.
-    auto* source_browsing_context = verify_cast<Window>(entry_global_object()).browsing_context();
+    // 2. Let sourceDocument be the entry global object's associated Document.
+    auto& source_document = verify_cast<Window>(entry_global_object()).associated_document();
 
     // 3. If target is the empty string, then set target to ""_blank"".
     if (target.is_empty())
@@ -338,21 +334,24 @@ WebIDL::ExceptionOr<JS::GCPtr<WindowProxy>> Window::open_impl(StringView url, St
         tokenized_features.remove(""noreferrer""sv);
     }
 
-    // 8. If noreferrer is true, then set noopener to true.
+    // FIXME: 8. Let referrerPolicy be the empty string.
+
+    // 9. If noreferrer is true, then set noopener to true.
     if (no_referrer == TokenizedFeature::NoReferrer::Yes)
         no_opener = TokenizedFeature::NoOpener::Yes;
 
-    // 9. Let target browsing context and windowType be the result of applying the rules for choosing a browsing context given target, source browsing context, and noopener.
-    auto [target_browsing_context, window_type] = source_browsing_context->choose_a_browsing_context(target, no_opener);
+    // 10. Let targetNavigable and windowType be the result of applying the rules for choosing a navigable given target, sourceDocument's node navigable, and noopener.
+    VERIFY(source_document.navigable());
+    auto [target_navigable, window_type] = source_document.navigable()->choose_a_navigable(target, no_opener);
 
-    // 10. If target browsing context is null, then return null.
-    if (target_browsing_context == nullptr)
+    // 11. If targetNavigable is null, then return null.
+    if (target_navigable == nullptr)
         return nullptr;
 
-    // 11. If windowType is either ""new and unrestricted"" or ""new with no opener"", then:
-    if (window_type == BrowsingContext::WindowType::NewAndUnrestricted || window_type == BrowsingContext::WindowType::NewWithNoOpener) {
+    // 12. If windowType is either ""new and unrestricted"" or ""new with no opener"", then:
+    if (window_type == Navigable::WindowType::NewAndUnrestricted || window_type == Navigable::WindowType::NewWithNoOpener) {
         // 1. Set the target browsing context's is popup to the result of checking if a popup window is requested, given tokenizedFeatures.
-        target_browsing_context->set_is_popup(check_if_a_popup_window_is_requested(tokenized_features));
+        target_navigable->set_is_popup(check_if_a_popup_window_is_requested(tokenized_features));
 
         // FIXME: 2. Set up browsing context features for target browsing context given tokenizedFeatures. [CSSOMVIEW]
         // NOTE: While this is not implemented yet, all of observable actions taken by this operation are optional (implementation-defined).
@@ -369,22 +368,11 @@ WebIDL::ExceptionOr<JS::GCPtr<WindowProxy>> Window::open_impl(StringView url, St
 
         // FIXME: 5. If urlRecord matches about:blank, then perform the URL and history update steps given target browsing context's active document and urlRecord.
 
-        // 6. Otherwise:
-        else {
-            // 1. Let request be a new request whose URL is urlRecord.
-            auto request = Fetch::Infrastructure::Request::create(vm);
-            request->set_url(url_record);
-
-            // 2. If noreferrer is true, then set request's referrer to ""no-referrer"".
-            if (no_referrer == TokenizedFeature::NoReferrer::Yes)
-                request->set_referrer(Fetch::Infrastructure::Request::Referrer::NoReferrer);
-
-            // 3. Navigate target browsing context to request, with exceptionsEnabled set to true and the source browsing context set to source browsing context.
-            TRY(target_browsing_context->navigate(request, *source_browsing_context, true));
-        }
+        // 6. Otherwise, navigate targetNavigable to urlRecord using sourceDocument, with referrerPolicy set to referrerPolicy and exceptionsEnabled set to true.
+        TRY(target_navigable->navigate(url_record, source_document));
     }
 
-    // 12. Otherwise:
+    // 13. Otherwise:
     else {
         // 1. If url is not the empty string, then:
         if (!url.is_empty()) {
@@ -396,29 +384,21 @@ WebIDL::ExceptionOr<JS::GCPtr<WindowProxy>> Window::open_impl(StringView url, St
             if (!url_record.is_valid())
                 return WebIDL::SyntaxError::create(realm(), ""URL is not valid""_fly_string);
 
-            // 3. Let request be a new request whose URL is urlRecord.
-            auto request = Fetch::Infrastructure::Request::create(vm);
-            request->set_url(url_record);
-
-            // 4. If noreferrer is true, then set request's referrer to ""noreferrer"".
-            if (no_referrer == TokenizedFeature::NoReferrer::Yes)
-                request->set_referrer(Fetch::Infrastructure::Request::Referrer::NoReferrer);
-
-            // 5. Navigate target browsing context to request, with exceptionsEnabled set to true and the source browsing context set to source browsing context.
-            TRY(target_browsing_context->navigate(request, *source_browsing_context, true));
+            // 3. Navigate targetNavigable to urlRecord using sourceDocument, with referrerPolicy set to referrerPolicy and exceptionsEnabled set to true.
+            TRY(target_navigable->navigate(url_record, source_document));
         }
 
         // 2. If noopener is false, then set target browsing context's opener browsing context to source browsing context.
         if (no_opener == TokenizedFeature::NoOpener::No)
-            target_browsing_context->set_opener_browsing_context(source_browsing_context);
+            target_navigable->active_browsing_context()->set_opener_browsing_context(source_document.browsing_context());
     }
 
     // 13. If noopener is true or windowType is ""new with no opener"", then return null.
-    if (no_opener == TokenizedFeature::NoOpener::Yes || window_type == BrowsingContext::WindowType::NewWithNoOpener)
+    if (no_opener == TokenizedFeature::NoOpener::Yes || window_type == Navigable::WindowType::NewWithNoOpener)
         return nullptr;
 
-    // 14. Return target browsing context's WindowProxy object.
-    return target_browsing_context->window_proxy();
+    // 14. Return targetNavigable's active WindowProxy.s
+    return target_navigable->active_window_proxy();
 }
 
 bool Window::dispatch_event(DOM::Event& event)"
8af02fc8b3d51e2e095eeaea6f38cab0858d2a66,2020-10-12 23:34:48,Tom,libgfx: Move filters from PixelPaint into LibGfx,False,Move filters from PixelPaint into LibGfx,libgfx,"diff --git a/Applications/PixelPaint/CMakeLists.txt b/Applications/PixelPaint/CMakeLists.txt
index 3fb7752ca877..52c55e48b071 100644
--- a/Applications/PixelPaint/CMakeLists.txt
+++ b/Applications/PixelPaint/CMakeLists.txt
@@ -3,12 +3,6 @@ set(SOURCES
     CreateNewLayerDialog.cpp
     EllipseTool.cpp
     EraseTool.cpp
-    Filters/BoxBlurFilter.cpp
-    Filters/Filter.cpp
-    Filters/GenericConvolutionFilter.cpp
-    Filters/LaplacianFilter.cpp
-    Filters/SharpenFilter.cpp
-    Filters/SpatialGaussianBlurFilter.cpp
     Image.cpp
     ImageEditor.cpp
     Layer.cpp
diff --git a/Applications/PixelPaint/Filters/BoxBlurFilter.cpp b/Applications/PixelPaint/Filters/BoxBlurFilter.cpp
deleted file mode 100644
index ad86dd91b68f..000000000000
--- a/Applications/PixelPaint/Filters/BoxBlurFilter.cpp
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include ""BoxBlurFilter.h""
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/Button.h>
-#include <LibGUI/CheckBox.h>
-#include <LibGUI/SpinBox.h>
-
-namespace PixelPaint {
-
-template<size_t N>
-BoxBlurFilter<N>::BoxBlurFilter()
-{
-}
-
-template<size_t N>
-BoxBlurFilter<N>::~BoxBlurFilter()
-{
-}
-
-}
-
-template class PixelPaint::BoxBlurFilter<3>;
-template class PixelPaint::BoxBlurFilter<5>;
diff --git a/Applications/PixelPaint/Filters/Filter.cpp b/Applications/PixelPaint/Filters/Filter.cpp
deleted file mode 100644
index cd21c604e49d..000000000000
--- a/Applications/PixelPaint/Filters/Filter.cpp
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include ""Filter.h""
-
-namespace PixelPaint {
-
-Filter::Filter()
-{
-}
-
-Filter::~Filter()
-{
-}
-
-}
diff --git a/Applications/PixelPaint/Filters/GenericConvolutionFilter.cpp b/Applications/PixelPaint/Filters/GenericConvolutionFilter.cpp
deleted file mode 100644
index af5a2bf299de..000000000000
--- a/Applications/PixelPaint/Filters/GenericConvolutionFilter.cpp
+++ /dev/null
@@ -1,103 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include ""GenericConvolutionFilter.h""
-#include <AK/TemporaryChange.h>
-#include <LibGfx/Bitmap.h>
-
-namespace PixelPaint {
-
-template<size_t N>
-GenericConvolutionFilter<N>::GenericConvolutionFilter()
-{
-}
-
-template<size_t N>
-GenericConvolutionFilter<N>::~GenericConvolutionFilter()
-{
-}
-
-template<size_t N>
-void GenericConvolutionFilter<N>::apply(const Filter::Parameters& parameters)
-{
-    ASSERT(parameters.is_generic_convolution_filter());
-
-    auto& gcf_params = static_cast<const GenericConvolutionFilter::Parameters&>(parameters);
-
-    auto& source = gcf_params.bitmap();
-    const auto& source_rect = gcf_params.rect();
-    auto target = Gfx::Bitmap::create(source.format(), parameters.rect().size());
-
-    // FIXME: Help! I am naive!
-    for (auto i_ = 0; i_ < source_rect.width(); ++i_) {
-        auto i = i_ + source_rect.x();
-        for (auto j_ = 0; j_ < source_rect.height(); ++j_) {
-            auto j = j_ + source_rect.y();
-            FloatVector3 value(0, 0, 0);
-            for (auto k = 0; k < 4; ++k) {
-                auto ki = i + k - 2;
-                if (ki < 0 || ki >= source.size().width()) {
-                    if (gcf_params.should_wrap())
-                        ki = (ki + source.size().width()) % source.size().width();
-                    else
-                        continue;
-                }
-
-                for (auto l = 0; l < 4; ++l) {
-                    auto lj = j + l - 2;
-                    if (lj < 0 || lj >= source.size().height()) {
-                        if (gcf_params.should_wrap())
-                            lj = (lj + source.size().height()) % source.size().height();
-                        else
-                            continue;
-                    }
-
-                    auto pixel = source.get_pixel(ki, lj);
-                    FloatVector3 pixel_value(pixel.red(), pixel.green(), pixel.blue());
-
-                    value = value + pixel_value * gcf_params.kernel().elements()[k][l];
-                }
-            }
-
-            // The float->u8 overflow is intentional.
-            target->set_pixel(i_, j_, Color(value.x(), value.y(), value.z(), source.get_pixel(i, j).alpha()));
-        }
-    }
-
-    // FIXME: Substitute for some sort of faster ""blit"" method.
-    for (auto i_ = 0; i_ < source_rect.width(); ++i_) {
-        auto i = i_ + source_rect.x();
-        for (auto j_ = 0; j_ < source_rect.height(); ++j_) {
-            auto j = j_ + source_rect.y();
-            source.set_pixel(i, j, target->get_pixel(i_, j_));
-        }
-    }
-}
-
-}
-
-template class PixelPaint::GenericConvolutionFilter<3>;
-template class PixelPaint::GenericConvolutionFilter<5>;
diff --git a/Applications/PixelPaint/Filters/LaplacianFilter.cpp b/Applications/PixelPaint/Filters/LaplacianFilter.cpp
deleted file mode 100644
index 6a1af5c7684a..000000000000
--- a/Applications/PixelPaint/Filters/LaplacianFilter.cpp
+++ /dev/null
@@ -1,39 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include ""LaplacianFilter.h""
-
-namespace PixelPaint {
-
-LaplacianFilter::LaplacianFilter()
-{
-}
-
-LaplacianFilter::~LaplacianFilter()
-{
-}
-
-}
diff --git a/Applications/PixelPaint/Filters/SharpenFilter.cpp b/Applications/PixelPaint/Filters/SharpenFilter.cpp
deleted file mode 100644
index 7ee17b1cd347..000000000000
--- a/Applications/PixelPaint/Filters/SharpenFilter.cpp
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include ""SharpenFilter.h""
-#include ""../ImageEditor.h""
-
-namespace PixelPaint {
-
-SharpenFilter::SharpenFilter()
-{
-}
-
-SharpenFilter::~SharpenFilter()
-{
-}
-
-}
diff --git a/Applications/PixelPaint/Filters/SpatialGaussianBlurFilter.cpp b/Applications/PixelPaint/Filters/SpatialGaussianBlurFilter.cpp
deleted file mode 100644
index b4743951aa0f..000000000000
--- a/Applications/PixelPaint/Filters/SpatialGaussianBlurFilter.cpp
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright (c) 2020, the SerenityOS developers.
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include ""SpatialGaussianBlurFilter.h""
-
-namespace PixelPaint {
-
-template<size_t N, typename T>
-SpatialGaussianBlurFilter<N, T>::SpatialGaussianBlurFilter()
-{
-}
-
-template<size_t N, typename T>
-SpatialGaussianBlurFilter<N, T>::~SpatialGaussianBlurFilter()
-{
-}
-
-}
-
-template class PixelPaint::SpatialGaussianBlurFilter<3>;
-template class PixelPaint::SpatialGaussianBlurFilter<5>;
diff --git a/Applications/PixelPaint/main.cpp b/Applications/PixelPaint/main.cpp
index 15b1227c2733..217cde513ef1 100644
--- a/Applications/PixelPaint/main.cpp
+++ b/Applications/PixelPaint/main.cpp
@@ -218,51 +218,51 @@ int main(int argc, char** argv)
     auto& edge_detect_submenu = spatial_filters_menu.add_submenu(""Edge Detect"");
     edge_detect_submenu.add_action(GUI::Action::create(""Laplacian (cardinal)"", [&](auto&) {
         if (auto* layer = image_editor.active_layer()) {
-            PixelPaint::LaplacianFilter filter;
-            if (auto parameters = PixelPaint::FilterParameters<PixelPaint::LaplacianFilter>::get(layer->bitmap(), layer->rect(), false))
+            Gfx::LaplacianFilter filter;
+            if (auto parameters = PixelPaint::FilterParameters<Gfx::LaplacianFilter>::get(layer->bitmap(), layer->rect(), false))
                 filter.apply(*parameters);
         }
     }));
     edge_detect_submenu.add_action(GUI::Action::create(""Laplacian (diagonal)"", [&](auto&) {
         if (auto* layer = image_editor.active_layer()) {
-            PixelPaint::LaplacianFilter filter;
-            if (auto parameters = PixelPaint::FilterParameters<PixelPaint::LaplacianFilter>::get(layer->bitmap(), layer->rect(), true))
+            Gfx::LaplacianFilter filter;
+            if (auto parameters = PixelPaint::FilterParameters<Gfx::LaplacianFilter>::get(layer->bitmap(), layer->rect(), true))
                 filter.apply(*parameters);
         }
     }));
     auto& blur_submenu = spatial_filters_menu.add_submenu(""Blur and Sharpen"");
     blur_submenu.add_action(GUI::Action::create(""Gaussian Blur (3x3)"", [&](auto&) {
         if (auto* layer = image_editor.active_layer()) {
-            PixelPaint::SpatialGaussianBlurFilter<3> filter;
-            if (auto parameters = PixelPaint::FilterParameters<PixelPaint::SpatialGaussianBlurFilter<3>>::get(layer->bitmap(), layer->rect()))
+            Gfx::SpatialGaussianBlurFilter<3> filter;
+            if (auto parameters = PixelPaint::FilterParameters<Gfx::SpatialGaussianBlurFilter<3>>::get(layer->bitmap(), layer->rect()))
                 filter.apply(*parameters);
         }
     }));
     blur_submenu.add_action(GUI::Action::create(""Gaussian Blur (5x5)"", [&](auto&) {
         if (auto* layer = image_editor.active_layer()) {
-            PixelPaint::SpatialGaussianBlurFilter<5> filter;
-            if (auto parameters = PixelPaint::FilterParameters<PixelPaint::SpatialGaussianBlurFilter<5>>::get(layer->bitmap(), layer->rect()))
+            Gfx::SpatialGaussianBlurFilter<5> filter;
+            if (auto parameters = PixelPaint::FilterParameters<Gfx::SpatialGaussianBlurFilter<5>>::get(layer->bitmap(), layer->rect()))
                 filter.apply(*parameters);
         }
     }));
     blur_submenu.add_action(GUI::Action::create(""Box Blur (3x3)"", [&](auto&) {
         if (auto* layer = image_editor.active_layer()) {
-            PixelPaint::BoxBlurFilter<3> filter;
-            if (auto parameters = PixelPaint::FilterParameters<PixelPaint::BoxBlurFilter<3>>::get(layer->bitmap(), layer->rect()))
+            Gfx::BoxBlurFilter<3> filter;
+            if (auto parameters = PixelPaint::FilterParameters<Gfx::BoxBlurFilter<3>>::get(layer->bitmap(), layer->rect()))
                 filter.apply(*parameters);
         }
     }));
     blur_submenu.add_action(GUI::Action::create(""Box Blur (5x5)"", [&](auto&) {
         if (auto* layer = image_editor.active_layer()) {
-            PixelPaint::BoxBlurFilter<5> filter;
-            if (auto parameters = PixelPaint::FilterParameters<PixelPaint::BoxBlurFilter<5>>::get(layer->bitmap(), layer->rect()))
+            Gfx::BoxBlurFilter<5> filter;
+            if (auto parameters = PixelPaint::FilterParameters<Gfx::BoxBlurFilter<5>>::get(layer->bitmap(), layer->rect()))
                 filter.apply(*parameters);
         }
     }));
     blur_submenu.add_action(GUI::Action::create(""Sharpen"", [&](auto&) {
         if (auto* layer = image_editor.active_layer()) {
-            PixelPaint::SharpenFilter filter;
-            if (auto parameters = PixelPaint::FilterParameters<PixelPaint::SharpenFilter>::get(layer->bitmap(), layer->rect()))
+            Gfx::SharpenFilter filter;
+            if (auto parameters = PixelPaint::FilterParameters<Gfx::SharpenFilter>::get(layer->bitmap(), layer->rect()))
                 filter.apply(*parameters);
         }
     }));
@@ -270,8 +270,8 @@ int main(int argc, char** argv)
     spatial_filters_menu.add_separator();
     spatial_filters_menu.add_action(GUI::Action::create(""Generic 5x5 Convolution"", [&](auto&) {
         if (auto* layer = image_editor.active_layer()) {
-            PixelPaint::GenericConvolutionFilter<5> filter;
-            if (auto parameters = PixelPaint::FilterParameters<PixelPaint::GenericConvolutionFilter<5>>::get(layer->bitmap(), layer->rect(), window))
+            Gfx::GenericConvolutionFilter<5> filter;
+            if (auto parameters = PixelPaint::FilterParameters<Gfx::GenericConvolutionFilter<5>>::get(layer->bitmap(), layer->rect(), window))
                 filter.apply(*parameters);
         }
     }));
diff --git a/Applications/PixelPaint/Filters/BoxBlurFilter.h b/Libraries/LibGfx/Filters/BoxBlurFilter.h
similarity index 95%
rename from Applications/PixelPaint/Filters/BoxBlurFilter.h
rename to Libraries/LibGfx/Filters/BoxBlurFilter.h
index 9e243c3ef88d..8be43befe11b 100644
--- a/Applications/PixelPaint/Filters/BoxBlurFilter.h
+++ b/Libraries/LibGfx/Filters/BoxBlurFilter.h
@@ -28,13 +28,13 @@
 
 #include ""GenericConvolutionFilter.h""
 
-namespace PixelPaint {
+namespace Gfx {
 
 template<size_t N>
 class BoxBlurFilter : public GenericConvolutionFilter<N> {
 public:
-    BoxBlurFilter();
-    virtual ~BoxBlurFilter();
+    BoxBlurFilter() { }
+    virtual ~BoxBlurFilter() { }
 
     virtual const char* class_name() const override { return ""BoxBlurFilter""; }
 };
diff --git a/Applications/PixelPaint/Filters/Filter.h b/Libraries/LibGfx/Filters/Filter.h
similarity index 81%
rename from Applications/PixelPaint/Filters/Filter.h
rename to Libraries/LibGfx/Filters/Filter.h
index b78075154504..617ac6877f53 100644
--- a/Applications/PixelPaint/Filters/Filter.h
+++ b/Libraries/LibGfx/Filters/Filter.h
@@ -26,41 +26,40 @@
 
 #pragma once
 
-#include <LibGUI/Event.h>
-#include <LibGUI/Forward.h>
-#include <LibGfx/Forward.h>
+#include <LibGfx/Bitmap.h>
+#include <LibGfx/Rect.h>
 
-namespace PixelPaint {
+namespace Gfx {
 
 class Filter {
 public:
     class Parameters {
     public:
-        Parameters(Gfx::Bitmap& bitmap, const Gfx::IntRect& rect)
+        Parameters(Bitmap& bitmap, const IntRect& rect)
             : m_target_bitmap(bitmap)
             , m_target_rect(rect)
 
         {
         }
 
-        Gfx::Bitmap& bitmap() const { return m_target_bitmap; }
-        const Gfx::IntRect& rect() const { return m_target_rect; }
+        Bitmap& bitmap() const { return m_target_bitmap; }
+        const IntRect& rect() const { return m_target_rect; }
         virtual bool is_generic_convolution_filter() const { return false; }
 
         virtual ~Parameters() { }
 
     private:
-        Gfx::Bitmap& m_target_bitmap;
-        Gfx::IntRect m_target_rect;
+        Bitmap& m_target_bitmap;
+        IntRect m_target_rect;
     };
-    virtual ~Filter();
+    virtual ~Filter() { }
 
     virtual const char* class_name() const = 0;
 
     virtual void apply(const Parameters&) = 0;
 
 protected:
-    Filter();
+    Filter() { }
 };
 
 }
diff --git a/Applications/PixelPaint/Filters/GenericConvolutionFilter.h b/Libraries/LibGfx/Filters/GenericConvolutionFilter.h
similarity index 53%
rename from Applications/PixelPaint/Filters/GenericConvolutionFilter.h
rename to Libraries/LibGfx/Filters/GenericConvolutionFilter.h
index bd538f7d432a..831773da14dd 100644
--- a/Applications/PixelPaint/Filters/GenericConvolutionFilter.h
+++ b/Libraries/LibGfx/Filters/GenericConvolutionFilter.h
@@ -27,11 +27,10 @@
 #pragma once
 
 #include ""Filter.h""
-#include <LibGUI/Dialog.h>
 #include <LibGfx/Matrix.h>
 #include <LibGfx/Matrix4x4.h>
 
-namespace PixelPaint {
+namespace Gfx {
 
 template<size_t N, typename T>
 inline static constexpr void normalize(Matrix<N, T>& matrix)
@@ -72,12 +71,66 @@ class GenericConvolutionFilter : public Filter {
         bool m_should_wrap { false };
     };
 
-    GenericConvolutionFilter();
-    virtual ~GenericConvolutionFilter();
+    GenericConvolutionFilter() { }
+    virtual ~GenericConvolutionFilter() { }
 
     virtual const char* class_name() const override { return ""GenericConvolutionFilter""; }
 
-    virtual void apply(const Filter::Parameters&) override;
+    virtual void apply(const Filter::Parameters& parameters)
+    {
+        ASSERT(parameters.is_generic_convolution_filter());
+
+        auto& gcf_params = static_cast<const GenericConvolutionFilter::Parameters&>(parameters);
+
+        auto& source = gcf_params.bitmap();
+        const auto& source_rect = gcf_params.rect();
+        auto target = Gfx::Bitmap::create(source.format(), parameters.rect().size());
+
+        // FIXME: Help! I am naive!
+        for (auto i_ = 0; i_ < source_rect.width(); ++i_) {
+            auto i = i_ + source_rect.x();
+            for (auto j_ = 0; j_ < source_rect.height(); ++j_) {
+                auto j = j_ + source_rect.y();
+                FloatVector3 value(0, 0, 0);
+                for (auto k = 0; k < 4; ++k) {
+                    auto ki = i + k - 2;
+                    if (ki < 0 || ki >= source.size().width()) {
+                        if (gcf_params.should_wrap())
+                            ki = (ki + source.size().width()) % source.size().width();
+                        else
+                            continue;
+                    }
+
+                    for (auto l = 0; l < 4; ++l) {
+                        auto lj = j + l - 2;
+                        if (lj < 0 || lj >= source.size().height()) {
+                            if (gcf_params.should_wrap())
+                                lj = (lj + source.size().height()) % source.size().height();
+                            else
+                                continue;
+                        }
+
+                        auto pixel = source.get_pixel(ki, lj);
+                        FloatVector3 pixel_value(pixel.red(), pixel.green(), pixel.blue());
+
+                        value = value + pixel_value * gcf_params.kernel().elements()[k][l];
+                    }
+                }
+
+                // The float->u8 overflow is intentional.
+                target->set_pixel(i_, j_, Color(value.x(), value.y(), value.z(), source.get_pixel(i, j).alpha()));
+            }
+        }
+
+        // FIXME: Substitute for some sort of faster ""blit"" method.
+        for (auto i_ = 0; i_ < source_rect.width(); ++i_) {
+            auto i = i_ + source_rect.x();
+            for (auto j_ = 0; j_ < source_rect.height(); ++j_) {
+                auto j = j_ + source_rect.y();
+                source.set_pixel(i, j, target->get_pixel(i_, j_));
+            }
+        }
+    }
 };
 
 }
diff --git a/Applications/PixelPaint/Filters/LaplacianFilter.h b/Libraries/LibGfx/Filters/LaplacianFilter.h
similarity index 95%
rename from Applications/PixelPaint/Filters/LaplacianFilter.h
rename to Libraries/LibGfx/Filters/LaplacianFilter.h
index b0d838caebbc..fe1c247582e4 100644
--- a/Applications/PixelPaint/Filters/LaplacianFilter.h
+++ b/Libraries/LibGfx/Filters/LaplacianFilter.h
@@ -28,12 +28,12 @@
 
 #include ""GenericConvolutionFilter.h""
 
-namespace PixelPaint {
+namespace Gfx {
 
 class LaplacianFilter : public GenericConvolutionFilter<3> {
 public:
-    LaplacianFilter();
-    virtual ~LaplacianFilter();
+    LaplacianFilter() { }
+    virtual ~LaplacianFilter() { }
 
     virtual const char* class_name() const override { return ""LaplacianFilter""; }
 };
diff --git a/Applications/PixelPaint/Filters/SharpenFilter.h b/Libraries/LibGfx/Filters/SharpenFilter.h
similarity index 95%
rename from Applications/PixelPaint/Filters/SharpenFilter.h
rename to Libraries/LibGfx/Filters/SharpenFilter.h
index 7581e4c2ee71..25456aa69195 100644
--- a/Applications/PixelPaint/Filters/SharpenFilter.h
+++ b/Libraries/LibGfx/Filters/SharpenFilter.h
@@ -28,12 +28,12 @@
 
 #include ""GenericConvolutionFilter.h""
 
-namespace PixelPaint {
+namespace Gfx {
 
 class SharpenFilter : public GenericConvolutionFilter<3> {
 public:
-    SharpenFilter();
-    virtual ~SharpenFilter();
+    SharpenFilter() { }
+    virtual ~SharpenFilter() { }
 
     virtual const char* class_name() const override { return ""SharpenFilter""; }
 };
diff --git a/Applications/PixelPaint/Filters/SpatialGaussianBlurFilter.h b/Libraries/LibGfx/Filters/SpatialGaussianBlurFilter.h
similarity index 94%
rename from Applications/PixelPaint/Filters/SpatialGaussianBlurFilter.h
rename to Libraries/LibGfx/Filters/SpatialGaussianBlurFilter.h
index bb774cc75eae..8bf8d414ca72 100644
--- a/Applications/PixelPaint/Filters/SpatialGaussianBlurFilter.h
+++ b/Libraries/LibGfx/Filters/SpatialGaussianBlurFilter.h
@@ -29,13 +29,13 @@
 #include ""GenericConvolutionFilter.h""
 #include <AK/StdLibExtras.h>
 
-namespace PixelPaint {
+namespace Gfx {
 
 template<size_t N, typename = typename AK::EnableIf<N % 2 == 1>::Type>
 class SpatialGaussianBlurFilter : public GenericConvolutionFilter<N> {
 public:
-    SpatialGaussianBlurFilter();
-    virtual ~SpatialGaussianBlurFilter();
+    SpatialGaussianBlurFilter() { }
+    virtual ~SpatialGaussianBlurFilter() { }
 
     virtual const char* class_name() const override { return ""SpatialGaussianBlurFilter""; }
 };"
8978325af8122e2a01d611a726ccb00aa312c437,2021-05-05 19:42:30,setepenre,base: Add manpage for groups(1),False,Add manpage for groups(1),base,"diff --git a/Base/usr/share/man/man1/groups.md b/Base/usr/share/man/man1/groups.md
new file mode 100644
index 000000000000..2edb8f819a50
--- /dev/null
+++ b/Base/usr/share/man/man1/groups.md
@@ -0,0 +1,31 @@
+## Name
+
+groups - list group memberships
+
+## Synopsis
+
+```**sh
+$ groups [username...]
+```
+
+## Description
+
+`groups` lists group memberships.
+
+If no username is provided group memberships are listed for current user.
+
+## Arguments
+
+* username: username to list group memberships for
+
+## Examples
+
+```sh
+# List group memberships for current user
+$ groups
+# List group memberships for one user
+$ groups nona
+# List group memberships for multiple users
+$ groups nona anon root
+```
+"
0bc89df3adf3b7e759eb4a1f903519a458f22271,2019-12-19 23:13:31,Andreas Kling,toolchain: Fix outdated MD5 sum of binutils tarball,False,Fix outdated MD5 sum of binutils tarball,toolchain,"diff --git a/Toolchain/BuildIt.sh b/Toolchain/BuildIt.sh
index 49cb739b014b..d236cff47b73 100755
--- a/Toolchain/BuildIt.sh
+++ b/Toolchain/BuildIt.sh
@@ -19,7 +19,7 @@ mkdir -p ""$DIR/Tarballs""
 source ""$DIR/UseIt.sh""
 
 BINUTILS_VERSION=""2.33.1""
-BINUTILS_MD5SUM=""d1119c93fc0ed3007be4a84dd186af5""
+BINUTILS_MD5SUM=""1a6b16bcc926e312633fcc3fae14ba0a""
 BINUTILS_NAME=""binutils-$BINUTILS_VERSION""
 BINUTILS_PKG=""${BINUTILS_NAME}.tar.gz""
 BINUTILS_BASE_URL=""http://ftp.gnu.org/gnu/binutils"""
6c83bd8fd4ece56f84b0389692af6e8ddeb2937a,2022-12-12 21:51:39,Lucas CHOLLET,ak: Introduce the `DerivedFrom` concept,False,Introduce the `DerivedFrom` concept,ak,"diff --git a/AK/Concepts.h b/AK/Concepts.h
index 6368310bfa03..f3966a1e84c4 100644
--- a/AK/Concepts.h
+++ b/AK/Concepts.h
@@ -45,6 +45,9 @@ concept OneOfIgnoringCV = IsOneOfIgnoringCV<U, Ts...>;
 template<typename T, template<typename...> typename S>
 concept SpecializationOf = IsSpecializationOf<T, S>;
 
+template<typename T, typename S>
+concept DerivedFrom = IsBaseOf<S, T>;
+
 template<typename T>
 concept AnyString = IsConstructible<StringView, T>;
 
@@ -136,6 +139,7 @@ namespace AK {
 #endif
 using AK::Concepts::Arithmetic;
 using AK::Concepts::ArrayLike;
+using AK::Concepts::DerivedFrom;
 using AK::Concepts::Enum;
 using AK::Concepts::FallibleFunction;
 using AK::Concepts::FloatingPoint;"
1042762deb4e50606d8fbb2e833d88e04b156a8f,2020-12-13 01:58:12,Tom,kernel: Fix block recursion,False,Fix block recursion,kernel,"diff --git a/Kernel/Thread.h b/Kernel/Thread.h
index 9d998081dda9..498afeebe8b6 100644
--- a/Kernel/Thread.h
+++ b/Kernel/Thread.h
@@ -786,7 +786,7 @@ class Thread
         ScopedSpinLock block_lock(m_block_lock);
         // We need to hold m_block_lock so that nobody can unblock a blocker as soon
         // as it is constructed and registered elsewhere
-        m_in_block++;
+        m_in_block = true;
         T t(forward<Args>(args)...);
 
         Atomic<bool> timeout_unblocked(false);
@@ -809,7 +809,7 @@ class Thread
                 // Don't block if the wake condition is already met
                 t.not_blocking(false);
                 m_blocker = nullptr;
-                m_in_block--;
+                m_in_block = false;
                 return BlockResult::NotBlocked;
             }
 
@@ -831,7 +831,7 @@ class Thread
                     // Timeout is already in the past
                     t.not_blocking(true);
                     m_blocker = nullptr;
-                    m_in_block--;
+                    m_in_block = false;
                     return BlockResult::InterruptedByTimeout;
                 }
             }
@@ -844,12 +844,13 @@ class Thread
         block_lock.unlock();
 
         bool did_timeout = false;
-        bool last_recursive_unblock;
+        bool did_unlock = false;
         for (;;) {
             scheduler_lock.unlock();
 
             // Yield to the scheduler, and wait for us to resume unblocked.
-            m_need_relock_process |= unlock_process_if_locked();
+            did_unlock |= unlock_process_if_locked();
+
             ASSERT(!g_scheduler_lock.own_lock());
             ASSERT(Processor::current().in_critical());
             yield_while_not_holding_big_lock();
@@ -875,7 +876,7 @@ class Thread
                 ASSERT(m_blocker == &t);
                 m_blocker = nullptr;
             }
-            last_recursive_unblock = (--m_in_block == 0);
+            m_in_block = false;
             break;
         }
 
@@ -895,8 +896,7 @@ class Thread
             // (e.g. if it's on another processor)
             TimerQueue::the().cancel_timer(timer.release_nonnull());
         }
-        if (m_need_relock_process && last_recursive_unblock) {
-            m_need_relock_process = false;
+        if (did_unlock) {
             // NOTE: this may trigger another call to Thread::block(), so
             // we need to do this after we're all done and restored m_in_block!
             lock_process();
@@ -1226,12 +1226,11 @@ class Thread
     u32 m_priority_boost { 0 };
 
     State m_stop_state { Invalid };
-    u32 m_in_block { false };
 
     bool m_dump_backtrace_on_finalization { false };
     bool m_should_die { false };
     bool m_initialized { false };
-    bool m_need_relock_process { false };
+    bool m_in_block { false };
     Atomic<bool> m_have_any_unmasked_pending_signals { false };
 
     void yield_without_holding_big_lock();"
a29534b53165484f28d6c18c2994ca19933ebcc0,2022-01-12 04:17:42,Jelle Raaijmakers,libgl: Implement `glColor3d` and `glColor3ubv`,False,Implement `glColor3d` and `glColor3ubv`,libgl,"diff --git a/Userland/Libraries/LibGL/GL/gl.h b/Userland/Libraries/LibGL/GL/gl.h
index 4b28fd927f64..6f119568dc1b 100644
--- a/Userland/Libraries/LibGL/GL/gl.h
+++ b/Userland/Libraries/LibGL/GL/gl.h
@@ -451,10 +451,12 @@ GLAPI void glClear(GLbitfield mask);
 GLAPI void glClearColor(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
 GLAPI void glClearDepth(GLdouble depth);
 GLAPI void glClearStencil(GLint s);
+GLAPI void glColor3d(GLdouble r, GLdouble g, GLdouble b);
 GLAPI void glColor3dv(GLdouble const* v);
 GLAPI void glColor3f(GLfloat r, GLfloat g, GLfloat b);
 GLAPI void glColor3fv(const GLfloat* v);
 GLAPI void glColor3ub(GLubyte r, GLubyte g, GLubyte b);
+GLAPI void glColor3ubv(GLubyte const* v);
 GLAPI void glColor4dv(GLdouble const* v);
 GLAPI void glColor4f(GLfloat r, GLfloat g, GLfloat b, GLfloat a);
 GLAPI void glColor4fv(const GLfloat* v);
diff --git a/Userland/Libraries/LibGL/GLColor.cpp b/Userland/Libraries/LibGL/GLColor.cpp
index f6eac96a643b..c620f0144038 100644
--- a/Userland/Libraries/LibGL/GLColor.cpp
+++ b/Userland/Libraries/LibGL/GLColor.cpp
@@ -10,6 +10,11 @@
 
 extern GL::GLContext* g_gl_context;
 
+void glColor3d(GLdouble r, GLdouble g, GLdouble b)
+{
+    g_gl_context->gl_color(r, g, b, 1.0);
+}
+
 void glColor3dv(GLdouble const* v)
 {
     g_gl_context->gl_color(v[0], v[1], v[2], 1.0);
@@ -30,6 +35,11 @@ void glColor3ub(GLubyte r, GLubyte g, GLubyte b)
     g_gl_context->gl_color(r / 255.0, g / 255.0, b / 255.0, 1.0);
 }
 
+void glColor3ubv(GLubyte const* v)
+{
+    g_gl_context->gl_color(v[0] / 255.0f, v[1] / 255.0f, v[2] / 255.0f, 1.0);
+}
+
 void glColor4dv(GLdouble const* v)
 {
     g_gl_context->gl_color(v[0], v[1], v[2], v[3]);"
60e27dea9cf53fdb9919471cf6a82877a7d37577,2021-08-31 16:09:46,Andrew Kaster,meta: Require unzip and tar explicitly in CMakeLists,False,Require unzip and tar explicitly in CMakeLists,meta,"diff --git a/CMakeLists.txt b/CMakeLists.txt
index 16dc2e185ca3..17e982b17713 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -155,6 +155,11 @@ if(CCACHE_PROGRAM)
     set_property(GLOBAL PROPERTY RULE_LAUNCH_COMPILE ""${CCACHE_PROGRAM}"")
 endif()
 
+# FIXME: With cmake 3.18, we can change unzip/untar steps to use
+#        file(ARCHIVE_EXTRACT) instead
+find_program(UNZIP unzip REQUIRED)
+find_program(TAR tar REQUIRED)
+
 unset(CMAKE_SYSROOT)
 set(CMAKE_STAGING_PREFIX ${CMAKE_BINARY_DIR}/Root)
 set(CMAKE_INSTALL_PREFIX ${CMAKE_BINARY_DIR}/Root)"
3ff36855d41a654da3da196adb524e8ed97ab90c,2023-12-20 16:52:05,tetektoza,libgui: Display commands on CommandPalette's start up,False,Display commands on CommandPalette's start up,libgui,"diff --git a/Userland/Libraries/LibGUI/FilteringProxyModel.cpp b/Userland/Libraries/LibGUI/FilteringProxyModel.cpp
index 65f515df7ec3..7a2525313044 100644
--- a/Userland/Libraries/LibGUI/FilteringProxyModel.cpp
+++ b/Userland/Libraries/LibGUI/FilteringProxyModel.cpp
@@ -94,7 +94,7 @@ void FilteringProxyModel::filter()
 
 void FilteringProxyModel::set_filter_term(StringView term)
 {
-    if (m_filter_term == term)
+    if (m_filter_term == term && !term.is_empty())
         return;
     m_filter_term = term;
     invalidate();"
67b65dffa838bb657067f3a40ff6b7f8a600fe1b,2021-05-25 01:24:09,Matthew Olsson,libpdf: Handle string encodings,False,Handle string encodings,libpdf,"diff --git a/Userland/Libraries/LibPDF/CMakeLists.txt b/Userland/Libraries/LibPDF/CMakeLists.txt
index 6d52363eb66b..aa8b86d8500f 100644
--- a/Userland/Libraries/LibPDF/CMakeLists.txt
+++ b/Userland/Libraries/LibPDF/CMakeLists.txt
@@ -8,4 +8,4 @@ set(SOURCES
     )
 
 serenity_lib(LibPDF pdf)
-target_link_libraries(LibPDF LibC LibCore LibIPC LibGfx)
+target_link_libraries(LibPDF LibC LibCore LibIPC LibGfx LibTextCodec)
diff --git a/Userland/Libraries/LibPDF/Parser.cpp b/Userland/Libraries/LibPDF/Parser.cpp
index f78f5211c02c..7aa434c1022b 100644
--- a/Userland/Libraries/LibPDF/Parser.cpp
+++ b/Userland/Libraries/LibPDF/Parser.cpp
@@ -9,6 +9,7 @@
 #include <LibPDF/Document.h>
 #include <LibPDF/Filter.h>
 #include <LibPDF/Parser.h>
+#include <LibTextCodec/Decoder.h>
 #include <ctype.h>
 #include <math.h>
 
@@ -422,9 +423,27 @@ NonnullRefPtr<StringObject> Parser::parse_string()
 {
     ScopeGuard guard([&] { consume_whitespace(); });
 
-    if (m_reader.matches('('))
-        return make_object<StringObject>(parse_literal_string(), false);
-    return make_object<StringObject>(parse_hex_string(), true);
+    String string;
+    bool is_binary_string;
+
+    if (m_reader.matches('(')) {
+        string = parse_literal_string();
+        is_binary_string = false;
+    } else {
+        string = parse_hex_string();
+        is_binary_string = true;
+    }
+
+    if (string.bytes().starts_with(Array<u8, 2> { 0xfe, 0xff })) {
+        // The string is encoded in UTF16-BE
+        string = TextCodec::decoder_for(""utf-16be"")->to_utf8(string.substring(2));
+    } else if (string.bytes().starts_with(Array<u8, 3> { 239, 187, 191 })) {
+        // The string is encoded in UTF-8. This is the default anyways, but if these bytes
+        // are explicitly included, we have to trim them
+        string = string.substring(3);
+    }
+
+    return make_object<StringObject>(string, is_binary_string);
 }
 
 String Parser::parse_literal_string()"
b816bd08066a342c73a12848f0bdbdf61179b6ce,2021-05-08 21:40:56,Itamar,ak: Add ConstPeekType to Traits,False,Add ConstPeekType to Traits,ak,"diff --git a/AK/NonnullOwnPtr.h b/AK/NonnullOwnPtr.h
index 99405847a72b..5fa314b927f7 100644
--- a/AK/NonnullOwnPtr.h
+++ b/AK/NonnullOwnPtr.h
@@ -158,7 +158,8 @@ make(Args&&... args)
 
 template<typename T>
 struct Traits<NonnullOwnPtr<T>> : public GenericTraits<NonnullOwnPtr<T>> {
-    using PeekType = const T*;
+    using PeekType = T*;
+    using ConstPeekType = const T*;
     static unsigned hash(const NonnullOwnPtr<T>& p) { return int_hash((u32)p.ptr()); }
     static bool equals(const NonnullOwnPtr<T>& a, const NonnullOwnPtr<T>& b) { return a.ptr() == b.ptr(); }
 };
diff --git a/AK/OwnPtr.h b/AK/OwnPtr.h
index 2ace9a4cea1c..416af312e2b5 100644
--- a/AK/OwnPtr.h
+++ b/AK/OwnPtr.h
@@ -193,7 +193,8 @@ inline void swap(OwnPtr<T>& a, OwnPtr<U>& b)
 
 template<typename T>
 struct Traits<OwnPtr<T>> : public GenericTraits<OwnPtr<T>> {
-    using PeekType = const T*;
+    using PeekType = T*;
+    using ConstPeekType = const T*;
     static unsigned hash(const OwnPtr<T>& p) { return ptr_hash(p.ptr()); }
     static bool equals(const OwnPtr<T>& a, const OwnPtr<T>& b) { return a.ptr() == b.ptr(); }
 };
diff --git a/AK/RefPtr.h b/AK/RefPtr.h
index e85ba1c93d49..687641836a46 100644
--- a/AK/RefPtr.h
+++ b/AK/RefPtr.h
@@ -451,7 +451,8 @@ struct Formatter<RefPtr<T>> : Formatter<const T*> {
 
 template<typename T>
 struct Traits<RefPtr<T>> : public GenericTraits<RefPtr<T>> {
-    using PeekType = const T*;
+    using PeekType = T*;
+    using ConstPeekType = const T*;
     static unsigned hash(const RefPtr<T>& p) { return ptr_hash(p.ptr()); }
     static bool equals(const RefPtr<T>& a, const RefPtr<T>& b) { return a.ptr() == b.ptr(); }
 };
diff --git a/AK/Traits.h b/AK/Traits.h
index aa0630c32ab6..19cc078122f8 100644
--- a/AK/Traits.h
+++ b/AK/Traits.h
@@ -14,6 +14,7 @@ namespace AK {
 template<typename T>
 struct GenericTraits {
     using PeekType = T;
+    using ConstPeekType = T;
     static constexpr bool is_trivial() { return false; }
     static constexpr bool equals(const T& a, const T& b) { return a == b; }
 };"
b34b68181115a35ea610a998d7c6faeb3259a2d9,2020-12-29 05:28:43,AnotherTest,libjs: Track source positions all the way down to exceptions,False,Track source positions all the way down to exceptions,libjs,"diff --git a/Libraries/LibJS/AST.cpp b/Libraries/LibJS/AST.cpp
index 563a278f848f..cf45f31dd5b9 100644
--- a/Libraries/LibJS/AST.cpp
+++ b/Libraries/LibJS/AST.cpp
@@ -88,26 +88,41 @@ static String get_function_name(GlobalObject& global_object, Value value)
 
 Value ScopeNode::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     return interpreter.execute_statement(global_object, *this);
 }
 
 Value Program::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     return interpreter.execute_statement(global_object, *this, ScopeType::Block);
 }
 
-Value FunctionDeclaration::execute(Interpreter&, GlobalObject&) const
+Value FunctionDeclaration::execute(Interpreter& interpreter, GlobalObject&) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     return js_undefined();
 }
 
 Value FunctionExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     return ScriptFunction::create(global_object, name(), body(), parameters(), function_length(), interpreter.current_scope(), is_strict_mode() || interpreter.vm().in_strict_mode(), m_is_arrow_function);
 }
 
 Value ExpressionStatement::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     return m_expression->execute(interpreter, global_object);
 }
 
@@ -152,6 +167,9 @@ CallExpression::ThisAndCallee CallExpression::compute_this_and_callee(Interprete
 
 Value CallExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto& vm = interpreter.vm();
     auto [this_value, callee] = compute_this_and_callee(interpreter, global_object);
     if (vm.exception())
@@ -235,6 +253,9 @@ Value CallExpression::execute(Interpreter& interpreter, GlobalObject& global_obj
 
 Value ReturnStatement::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto value = argument() ? argument()->execute(interpreter, global_object) : js_undefined();
     if (interpreter.exception())
         return {};
@@ -244,6 +265,9 @@ Value ReturnStatement::execute(Interpreter& interpreter, GlobalObject& global_ob
 
 Value IfStatement::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto predicate_result = m_predicate->execute(interpreter, global_object);
     if (interpreter.exception())
         return {};
@@ -259,6 +283,9 @@ Value IfStatement::execute(Interpreter& interpreter, GlobalObject& global_object
 
 Value WithStatement::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto object_value = m_object->execute(interpreter, global_object);
     if (interpreter.exception())
         return {};
@@ -277,6 +304,9 @@ Value WithStatement::execute(Interpreter& interpreter, GlobalObject& global_obje
 
 Value WhileStatement::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     Value last_value = js_undefined();
     for (;;) {
         auto test_result = m_test->execute(interpreter, global_object);
@@ -304,6 +334,9 @@ Value WhileStatement::execute(Interpreter& interpreter, GlobalObject& global_obj
 
 Value DoWhileStatement::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     Value last_value = js_undefined();
     for (;;) {
         if (interpreter.exception())
@@ -333,10 +366,13 @@ Value DoWhileStatement::execute(Interpreter& interpreter, GlobalObject& global_o
 
 Value ForStatement::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     RefPtr<BlockStatement> wrapper;
 
     if (m_init && m_init->is_variable_declaration() && static_cast<const VariableDeclaration*>(m_init.ptr())->declaration_kind() != DeclarationKind::Var) {
-        wrapper = create_ast_node<BlockStatement>();
+        wrapper = create_ast_node<BlockStatement>(source_range());
         NonnullRefPtrVector<VariableDeclaration> decls;
         decls.append(*static_cast<const VariableDeclaration*>(m_init.ptr()));
         wrapper->add_variables(decls);
@@ -415,7 +451,7 @@ static FlyString variable_from_for_declaration(Interpreter& interpreter, GlobalO
         auto* variable_declaration = static_cast<const VariableDeclaration*>(node.ptr());
         ASSERT(!variable_declaration->declarations().is_empty());
         if (variable_declaration->declaration_kind() != DeclarationKind::Var) {
-            wrapper = create_ast_node<BlockStatement>();
+            wrapper = create_ast_node<BlockStatement>(node->source_range());
             interpreter.enter_scope(*wrapper, ScopeType::Block, global_object);
         }
         variable_declaration->execute(interpreter, global_object);
@@ -430,6 +466,9 @@ static FlyString variable_from_for_declaration(Interpreter& interpreter, GlobalO
 
 Value ForInStatement::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     if (!m_lhs->is_variable_declaration() && !m_lhs->is_identifier()) {
         // FIXME: Implement ""for (foo.bar in baz)"", ""for (foo[0] in bar)""
         ASSERT_NOT_REACHED();
@@ -474,6 +513,9 @@ Value ForInStatement::execute(Interpreter& interpreter, GlobalObject& global_obj
 
 Value ForOfStatement::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     if (!m_lhs->is_variable_declaration() && !m_lhs->is_identifier()) {
         // FIXME: Implement ""for (foo.bar of baz)"", ""for (foo[0] of bar)""
         ASSERT_NOT_REACHED();
@@ -515,6 +557,9 @@ Value ForOfStatement::execute(Interpreter& interpreter, GlobalObject& global_obj
 
 Value BinaryExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto lhs_result = m_lhs->execute(interpreter, global_object);
     if (interpreter.exception())
         return {};
@@ -574,6 +619,9 @@ Value BinaryExpression::execute(Interpreter& interpreter, GlobalObject& global_o
 
 Value LogicalExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto lhs_result = m_lhs->execute(interpreter, global_object);
     if (interpreter.exception())
         return {};
@@ -631,6 +679,9 @@ Reference MemberExpression::to_reference(Interpreter& interpreter, GlobalObject&
 
 Value UnaryExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto& vm = interpreter.vm();
     if (m_op == UnaryOp::Delete) {
         auto reference = m_lhs->to_reference(interpreter, global_object);
@@ -713,19 +764,28 @@ Value UnaryExpression::execute(Interpreter& interpreter, GlobalObject& global_ob
     ASSERT_NOT_REACHED();
 }
 
-Value SuperExpression::execute(Interpreter&, GlobalObject&) const
+Value SuperExpression::execute(Interpreter& interpreter, GlobalObject&) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     // The semantics for SuperExpressions are handled in CallExpression::compute_this_and_callee()
     ASSERT_NOT_REACHED();
 }
 
 Value ClassMethod::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     return m_function->execute(interpreter, global_object);
 }
 
 Value ClassExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto& vm = interpreter.vm();
     Value class_constructor_value = m_constructor->execute(interpreter, global_object);
     if (interpreter.exception())
@@ -812,6 +872,9 @@ Value ClassExpression::execute(Interpreter& interpreter, GlobalObject& global_ob
 
 Value ClassDeclaration::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     Value class_constructor = m_class_expression->execute(interpreter, global_object);
     if (interpreter.exception())
         return {};
@@ -1224,6 +1287,9 @@ void ForOfStatement::dump(int indent) const
 
 Value Identifier::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto value = interpreter.vm().get_variable(string(), global_object);
     if (value.is_empty()) {
         interpreter.vm().throw_exception<ReferenceError>(global_object, ErrorType::UnknownIdentifier, string());
@@ -1246,11 +1312,17 @@ void SpreadExpression::dump(int indent) const
 
 Value SpreadExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     return m_target->execute(interpreter, global_object);
 }
 
 Value ThisExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     return interpreter.vm().resolve_this_binding(global_object);
 }
 
@@ -1261,6 +1333,9 @@ void ThisExpression::dump(int indent) const
 
 Value AssignmentExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
 #define EXECUTE_LHS_AND_RHS()                                    \
     do {                                                         \
         lhs_result = m_lhs->execute(interpreter, global_object); \
@@ -1376,6 +1451,9 @@ Value AssignmentExpression::execute(Interpreter& interpreter, GlobalObject& glob
 
 Value UpdateExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto reference = m_argument->to_reference(interpreter, global_object);
     if (interpreter.exception())
         return {};
@@ -1497,6 +1575,9 @@ void UpdateExpression::dump(int indent) const
 
 Value VariableDeclaration::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     for (auto& declarator : m_declarations) {
         if (auto* init = declarator.init()) {
             auto initalizer_result = init->execute(interpreter, global_object);
@@ -1510,8 +1591,11 @@ Value VariableDeclaration::execute(Interpreter& interpreter, GlobalObject& globa
     return js_undefined();
 }
 
-Value VariableDeclarator::execute(Interpreter&, GlobalObject&) const
+Value VariableDeclarator::execute(Interpreter& interpreter, GlobalObject&) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     // NOTE: VariableDeclarator execution is handled by VariableDeclaration.
     ASSERT_NOT_REACHED();
 }
@@ -1568,14 +1652,20 @@ void ExpressionStatement::dump(int indent) const
     m_expression->dump(indent + 1);
 }
 
-Value ObjectProperty::execute(Interpreter&, GlobalObject&) const
+Value ObjectProperty::execute(Interpreter& interpreter, GlobalObject&) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     // NOTE: ObjectProperty execution is handled by ObjectExpression.
     ASSERT_NOT_REACHED();
 }
 
 Value ObjectExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto* object = Object::create_empty(global_object);
     for (auto& property : m_properties) {
         auto key = property.key().execute(interpreter, global_object);
@@ -1677,6 +1767,9 @@ String MemberExpression::to_string_approximation() const
 
 Value MemberExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto object_value = m_object->execute(interpreter, global_object);
     if (interpreter.exception())
         return {};
@@ -1704,6 +1797,9 @@ void MetaProperty::dump(int indent) const
 
 Value MetaProperty::execute(Interpreter& interpreter, GlobalObject&) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     if (m_type == MetaProperty::Type::NewTarget)
         return interpreter.vm().get_new_target().value_or(js_undefined());
     if (m_type == MetaProperty::Type::ImportMeta)
@@ -1713,26 +1809,41 @@ Value MetaProperty::execute(Interpreter& interpreter, GlobalObject&) const
 
 Value StringLiteral::execute(Interpreter& interpreter, GlobalObject&) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     return js_string(interpreter.heap(), m_value);
 }
 
-Value NumericLiteral::execute(Interpreter&, GlobalObject&) const
+Value NumericLiteral::execute(Interpreter& interpreter, GlobalObject&) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     return Value(m_value);
 }
 
 Value BigIntLiteral::execute(Interpreter& interpreter, GlobalObject&) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     return js_bigint(interpreter.heap(), Crypto::SignedBigInteger::from_base10(m_value.substring(0, m_value.length() - 1)));
 }
 
-Value BooleanLiteral::execute(Interpreter&, GlobalObject&) const
+Value BooleanLiteral::execute(Interpreter& interpreter, GlobalObject&) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     return Value(m_value);
 }
 
-Value NullLiteral::execute(Interpreter&, GlobalObject&) const
+Value NullLiteral::execute(Interpreter& interpreter, GlobalObject&) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     return js_null();
 }
 
@@ -1742,8 +1853,11 @@ void RegExpLiteral::dump(int indent) const
     outln(""{} (/{}/{})"", class_name(), content(), flags());
 }
 
-Value RegExpLiteral::execute(Interpreter&, GlobalObject& global_object) const
+Value RegExpLiteral::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     return RegExpObject::create(global_object, content(), flags());
 }
 
@@ -1762,6 +1876,9 @@ void ArrayExpression::dump(int indent) const
 
 Value ArrayExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto* array = Array::create(global_object);
     for (auto& element : m_elements) {
         auto value = Value();
@@ -1794,6 +1911,9 @@ void TemplateLiteral::dump(int indent) const
 
 Value TemplateLiteral::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     StringBuilder string_builder;
 
     for (auto& expression : m_expressions) {
@@ -1822,6 +1942,9 @@ void TaggedTemplateLiteral::dump(int indent) const
 
 Value TaggedTemplateLiteral::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto& vm = interpreter.vm();
     auto tag = m_tag->execute(interpreter, global_object);
     if (vm.exception())
@@ -1897,6 +2020,9 @@ void ThrowStatement::dump(int indent) const
 
 Value TryStatement::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     interpreter.execute_statement(global_object, m_block, ScopeType::Try);
     if (auto* exception = interpreter.exception()) {
         if (m_handler) {
@@ -1928,8 +2054,11 @@ Value TryStatement::execute(Interpreter& interpreter, GlobalObject& global_objec
     return js_undefined();
 }
 
-Value CatchClause::execute(Interpreter&, GlobalObject&) const
+Value CatchClause::execute(Interpreter& interpreter, GlobalObject&) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     // NOTE: CatchClause execution is handled by TryStatement.
     ASSERT_NOT_REACHED();
     return {};
@@ -1937,6 +2066,9 @@ Value CatchClause::execute(Interpreter&, GlobalObject&) const
 
 Value ThrowStatement::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto value = m_argument->execute(interpreter, global_object);
     if (interpreter.vm().exception())
         return {};
@@ -1946,6 +2078,9 @@ Value ThrowStatement::execute(Interpreter& interpreter, GlobalObject& global_obj
 
 Value SwitchStatement::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto discriminant_result = m_discriminant->execute(interpreter, global_object);
     if (interpreter.exception())
         return {};
@@ -1983,8 +2118,11 @@ Value SwitchStatement::execute(Interpreter& interpreter, GlobalObject& global_ob
     return js_undefined();
 }
 
-Value SwitchCase::execute(Interpreter&, GlobalObject&) const
+Value SwitchCase::execute(Interpreter& interpreter, GlobalObject&) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     // NOTE: SwitchCase execution is handled by SwitchStatement.
     ASSERT_NOT_REACHED();
     return {};
@@ -1992,12 +2130,18 @@ Value SwitchCase::execute(Interpreter&, GlobalObject&) const
 
 Value BreakStatement::execute(Interpreter& interpreter, GlobalObject&) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     interpreter.vm().unwind(ScopeType::Breakable, m_target_label);
     return js_undefined();
 }
 
 Value ContinueStatement::execute(Interpreter& interpreter, GlobalObject&) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     interpreter.vm().unwind(ScopeType::Continuable, m_target_label);
     return js_undefined();
 }
@@ -2029,6 +2173,9 @@ void SwitchCase::dump(int indent) const
 
 Value ConditionalExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     auto test_result = m_test->execute(interpreter, global_object);
     if (interpreter.exception())
         return {};
@@ -2066,6 +2213,9 @@ void SequenceExpression::dump(int indent) const
 
 Value SequenceExpression::execute(Interpreter& interpreter, GlobalObject& global_object) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     Value last_value;
     for (auto& expression : m_expressions) {
         last_value = expression.execute(interpreter, global_object);
@@ -2075,8 +2225,11 @@ Value SequenceExpression::execute(Interpreter& interpreter, GlobalObject& global
     return last_value;
 }
 
-Value DebuggerStatement::execute(Interpreter&, GlobalObject&) const
+Value DebuggerStatement::execute(Interpreter& interpreter, GlobalObject&) const
 {
+    interpreter.enter_node(*this);
+    ScopeGuard exit_node { [&] { interpreter.exit_node(*this); } };
+
     // Sorry, no JavaScript debugger available (yet)!
     return js_undefined();
 }
diff --git a/Libraries/LibJS/AST.h b/Libraries/LibJS/AST.h
index 51360fb4b889..4924f79ac907 100644
--- a/Libraries/LibJS/AST.h
+++ b/Libraries/LibJS/AST.h
@@ -36,6 +36,7 @@
 #include <LibJS/Forward.h>
 #include <LibJS/Runtime/PropertyName.h>
 #include <LibJS/Runtime/Value.h>
+#include <LibJS/SourceRange.h>
 
 namespace JS {
 
@@ -44,9 +45,9 @@ class FunctionDeclaration;
 
 template<class T, class... Args>
 static inline NonnullRefPtr<T>
-create_ast_node(Args&&... args)
+create_ast_node(SourceRange range, Args&&... args)
 {
-    return adopt(*new T(forward<Args>(args)...));
+    return adopt(*new T(range, forward<Args>(args)...));
 }
 
 class ASTNode : public RefCounted<ASTNode> {
@@ -67,14 +68,26 @@ class ASTNode : public RefCounted<ASTNode> {
     virtual bool is_expression_statement() const { return false; };
     virtual bool is_string_literal() const { return false; };
 
+    const SourceRange& source_range() const { return m_source_range; }
+    SourceRange& source_range() { return m_source_range; }
+
 protected:
-    ASTNode() { }
+    ASTNode(SourceRange source_range)
+        : m_source_range(move(source_range))
+    {
+    }
 
 private:
+    SourceRange m_source_range;
 };
 
 class Statement : public ASTNode {
 public:
+    Statement(SourceRange source_range)
+        : ASTNode(move(source_range))
+    {
+    }
+
     const FlyString& label() const { return m_label; }
     void set_label(FlyString string) { m_label = string; }
 
@@ -84,20 +97,29 @@ class Statement : public ASTNode {
 
 class EmptyStatement final : public Statement {
 public:
+    EmptyStatement(SourceRange source_range)
+        : Statement(move(source_range))
+    {
+    }
     Value execute(Interpreter&, GlobalObject&) const override { return js_undefined(); }
     const char* class_name() const override { return ""EmptyStatement""; }
 };
 
 class ErrorStatement final : public Statement {
 public:
+    ErrorStatement(SourceRange source_range)
+        : Statement(move(source_range))
+    {
+    }
     Value execute(Interpreter&, GlobalObject&) const override { return js_undefined(); }
     const char* class_name() const override { return ""ErrorStatement""; }
 };
 
 class ExpressionStatement final : public Statement {
 public:
-    ExpressionStatement(NonnullRefPtr<Expression> expression)
-        : m_expression(move(expression))
+    ExpressionStatement(SourceRange source_range, NonnullRefPtr<Expression> expression)
+        : Statement(move(source_range))
+        , m_expression(move(expression))
     {
     }
 
@@ -116,9 +138,9 @@ class ExpressionStatement final : public Statement {
 class ScopeNode : public Statement {
 public:
     template<typename T, typename... Args>
-    T& append(Args&&... args)
+    T& append(SourceRange range, Args&&... args)
     {
-        auto child = create_ast_node<T>(forward<Args>(args)...);
+        auto child = create_ast_node<T>(range, forward<Args>(args)...);
         m_children.append(move(child));
         return static_cast<T&>(m_children.last());
     }
@@ -137,7 +159,10 @@ class ScopeNode : public Statement {
     const NonnullRefPtrVector<FunctionDeclaration>& functions() const { return m_functions; }
 
 protected:
-    ScopeNode() { }
+    ScopeNode(SourceRange source_range)
+        : Statement(move(source_range))
+    {
+    }
 
 private:
     virtual bool is_scope_node() const final { return true; }
@@ -148,7 +173,10 @@ class ScopeNode : public Statement {
 
 class Program final : public ScopeNode {
 public:
-    Program() { }
+    Program(SourceRange source_range)
+        : ScopeNode(move(source_range))
+    {
+    }
 
     virtual Value execute(Interpreter&, GlobalObject&) const override;
 
@@ -164,7 +192,10 @@ class Program final : public ScopeNode {
 
 class BlockStatement final : public ScopeNode {
 public:
-    BlockStatement() { }
+    BlockStatement(SourceRange source_range)
+        : ScopeNode(move(source_range))
+    {
+    }
 
 private:
     virtual const char* class_name() const override { return ""BlockStatement""; }
@@ -172,14 +203,27 @@ class BlockStatement final : public ScopeNode {
 
 class Expression : public ASTNode {
 public:
+    Expression(SourceRange source_range)
+        : ASTNode(move(source_range))
+    {
+    }
     virtual Reference to_reference(Interpreter&, GlobalObject&) const;
 };
 
 class Declaration : public Statement {
+public:
+    Declaration(SourceRange source_range)
+        : Statement(move(source_range))
+    {
+    }
 };
 
 class ErrorDeclaration final : public Declaration {
 public:
+    ErrorDeclaration(SourceRange source_range)
+        : Declaration(move(source_range))
+    {
+    }
     Value execute(Interpreter&, GlobalObject&) const override { return js_undefined(); }
     const char* class_name() const override { return ""ErrorDeclaration""; }
 };
@@ -228,8 +272,9 @@ class FunctionDeclaration final
 public:
     static bool must_have_name() { return true; }
 
-    FunctionDeclaration(const FlyString& name, NonnullRefPtr<Statement> body, Vector<Parameter> parameters, i32 function_length, NonnullRefPtrVector<VariableDeclaration> variables, bool is_strict_mode = false)
-        : FunctionNode(name, move(body), move(parameters), function_length, move(variables), is_strict_mode)
+    FunctionDeclaration(SourceRange source_range, const FlyString& name, NonnullRefPtr<Statement> body, Vector<Parameter> parameters, i32 function_length, NonnullRefPtrVector<VariableDeclaration> variables, bool is_strict_mode = false)
+        : Declaration(move(source_range))
+        , FunctionNode(name, move(body), move(parameters), function_length, move(variables), is_strict_mode)
     {
     }
 
@@ -246,8 +291,9 @@ class FunctionExpression final
 public:
     static bool must_have_name() { return false; }
 
-    FunctionExpression(const FlyString& name, NonnullRefPtr<Statement> body, Vector<Parameter> parameters, i32 function_length, NonnullRefPtrVector<VariableDeclaration> variables, bool is_strict_mode, bool is_arrow_function = false)
-        : FunctionNode(name, move(body), move(parameters), function_length, move(variables), is_strict_mode)
+    FunctionExpression(SourceRange source_range, const FlyString& name, NonnullRefPtr<Statement> body, Vector<Parameter> parameters, i32 function_length, NonnullRefPtrVector<VariableDeclaration> variables, bool is_strict_mode, bool is_arrow_function = false)
+        : Expression(move(source_range))
+        , FunctionNode(name, move(body), move(parameters), function_length, move(variables), is_strict_mode)
         , m_is_arrow_function(is_arrow_function)
     {
     }
@@ -263,14 +309,20 @@ class FunctionExpression final
 
 class ErrorExpression final : public Expression {
 public:
+    explicit ErrorExpression(SourceRange source_range)
+        : Expression(move(source_range))
+    {
+    }
+
     Value execute(Interpreter&, GlobalObject&) const override { return js_undefined(); }
     const char* class_name() const override { return ""ErrorExpression""; }
 };
 
 class ReturnStatement final : public Statement {
 public:
-    explicit ReturnStatement(RefPtr<Expression> argument)
-        : m_argument(move(argument))
+    explicit ReturnStatement(SourceRange source_range, RefPtr<Expression> argument)
+        : Statement(move(source_range))
+        , m_argument(move(argument))
     {
     }
 
@@ -287,8 +339,9 @@ class ReturnStatement final : public Statement {
 
 class IfStatement final : public Statement {
 public:
-    IfStatement(NonnullRefPtr<Expression> predicate, NonnullRefPtr<Statement> consequent, RefPtr<Statement> alternate)
-        : m_predicate(move(predicate))
+    IfStatement(SourceRange source_range, NonnullRefPtr<Expression> predicate, NonnullRefPtr<Statement> consequent, RefPtr<Statement> alternate)
+        : Statement(move(source_range))
+        , m_predicate(move(predicate))
         , m_consequent(move(consequent))
         , m_alternate(move(alternate))
     {
@@ -311,8 +364,9 @@ class IfStatement final : public Statement {
 
 class WhileStatement final : public Statement {
 public:
-    WhileStatement(NonnullRefPtr<Expression> test, NonnullRefPtr<Statement> body)
-        : m_test(move(test))
+    WhileStatement(SourceRange source_range, NonnullRefPtr<Expression> test, NonnullRefPtr<Statement> body)
+        : Statement(move(source_range))
+        , m_test(move(test))
         , m_body(move(body))
     {
     }
@@ -332,8 +386,9 @@ class WhileStatement final : public Statement {
 
 class DoWhileStatement final : public Statement {
 public:
-    DoWhileStatement(NonnullRefPtr<Expression> test, NonnullRefPtr<Statement> body)
-        : m_test(move(test))
+    DoWhileStatement(SourceRange source_range, NonnullRefPtr<Expression> test, NonnullRefPtr<Statement> body)
+        : Statement(move(source_range))
+        , m_test(move(test))
         , m_body(move(body))
     {
     }
@@ -353,8 +408,9 @@ class DoWhileStatement final : public Statement {
 
 class WithStatement final : public Statement {
 public:
-    WithStatement(NonnullRefPtr<Expression> object, NonnullRefPtr<Statement> body)
-        : m_object(move(object))
+    WithStatement(SourceRange source_range, NonnullRefPtr<Expression> object, NonnullRefPtr<Statement> body)
+        : Statement(move(source_range))
+        , m_object(move(object))
         , m_body(move(body))
     {
     }
@@ -374,8 +430,9 @@ class WithStatement final : public Statement {
 
 class ForStatement final : public Statement {
 public:
-    ForStatement(RefPtr<ASTNode> init, RefPtr<Expression> test, RefPtr<Expression> update, NonnullRefPtr<Statement> body)
-        : m_init(move(init))
+    ForStatement(SourceRange source_range, RefPtr<ASTNode> init, RefPtr<Expression> test, RefPtr<Expression> update, NonnullRefPtr<Statement> body)
+        : Statement(move(source_range))
+        , m_init(move(init))
         , m_test(move(test))
         , m_update(move(update))
         , m_body(move(body))
@@ -401,8 +458,9 @@ class ForStatement final : public Statement {
 
 class ForInStatement final : public Statement {
 public:
-    ForInStatement(NonnullRefPtr<ASTNode> lhs, NonnullRefPtr<Expression> rhs, NonnullRefPtr<Statement> body)
-        : m_lhs(move(lhs))
+    ForInStatement(SourceRange source_range, NonnullRefPtr<ASTNode> lhs, NonnullRefPtr<Expression> rhs, NonnullRefPtr<Statement> body)
+        : Statement(move(source_range))
+        , m_lhs(move(lhs))
         , m_rhs(move(rhs))
         , m_body(move(body))
     {
@@ -425,8 +483,9 @@ class ForInStatement final : public Statement {
 
 class ForOfStatement final : public Statement {
 public:
-    ForOfStatement(NonnullRefPtr<ASTNode> lhs, NonnullRefPtr<Expression> rhs, NonnullRefPtr<Statement> body)
-        : m_lhs(move(lhs))
+    ForOfStatement(SourceRange source_range, NonnullRefPtr<ASTNode> lhs, NonnullRefPtr<Expression> rhs, NonnullRefPtr<Statement> body)
+        : Statement(move(source_range))
+        , m_lhs(move(lhs))
         , m_rhs(move(rhs))
         , m_body(move(body))
     {
@@ -474,8 +533,9 @@ enum class BinaryOp {
 
 class BinaryExpression final : public Expression {
 public:
-    BinaryExpression(BinaryOp op, NonnullRefPtr<Expression> lhs, NonnullRefPtr<Expression> rhs)
-        : m_op(op)
+    BinaryExpression(SourceRange source_range, BinaryOp op, NonnullRefPtr<Expression> lhs, NonnullRefPtr<Expression> rhs)
+        : Expression(move(source_range))
+        , m_op(op)
         , m_lhs(move(lhs))
         , m_rhs(move(rhs))
     {
@@ -500,8 +560,9 @@ enum class LogicalOp {
 
 class LogicalExpression final : public Expression {
 public:
-    LogicalExpression(LogicalOp op, NonnullRefPtr<Expression> lhs, NonnullRefPtr<Expression> rhs)
-        : m_op(op)
+    LogicalExpression(SourceRange source_range, LogicalOp op, NonnullRefPtr<Expression> lhs, NonnullRefPtr<Expression> rhs)
+        : Expression(move(source_range))
+        , m_op(op)
         , m_lhs(move(lhs))
         , m_rhs(move(rhs))
     {
@@ -530,8 +591,9 @@ enum class UnaryOp {
 
 class UnaryExpression final : public Expression {
 public:
-    UnaryExpression(UnaryOp op, NonnullRefPtr<Expression> lhs)
-        : m_op(op)
+    UnaryExpression(SourceRange source_range, UnaryOp op, NonnullRefPtr<Expression> lhs)
+        : Expression(move(source_range))
+        , m_op(op)
         , m_lhs(move(lhs))
     {
     }
@@ -548,8 +610,9 @@ class UnaryExpression final : public Expression {
 
 class SequenceExpression final : public Expression {
 public:
-    SequenceExpression(NonnullRefPtrVector<Expression> expressions)
-        : m_expressions(move(expressions))
+    SequenceExpression(SourceRange source_range, NonnullRefPtrVector<Expression> expressions)
+        : Expression(move(source_range))
+        , m_expressions(move(expressions))
     {
     }
 
@@ -564,13 +627,17 @@ class SequenceExpression final : public Expression {
 
 class Literal : public Expression {
 protected:
-    explicit Literal() { }
+    explicit Literal(SourceRange source_range)
+        : Expression(move(source_range))
+    {
+    }
 };
 
 class BooleanLiteral final : public Literal {
 public:
-    explicit BooleanLiteral(bool value)
-        : m_value(value)
+    explicit BooleanLiteral(SourceRange source_range, bool value)
+        : Literal(move(source_range))
+        , m_value(value)
     {
     }
 
@@ -585,8 +652,9 @@ class BooleanLiteral final : public Literal {
 
 class NumericLiteral final : public Literal {
 public:
-    explicit NumericLiteral(double value)
-        : m_value(value)
+    explicit NumericLiteral(SourceRange source_range, double value)
+        : Literal(move(source_range))
+        , m_value(value)
     {
     }
 
@@ -601,8 +669,9 @@ class NumericLiteral final : public Literal {
 
 class BigIntLiteral final : public Literal {
 public:
-    explicit BigIntLiteral(String value)
-        : m_value(move(value))
+    explicit BigIntLiteral(SourceRange source_range, String value)
+        : Literal(move(source_range))
+        , m_value(move(value))
     {
     }
 
@@ -617,8 +686,9 @@ class BigIntLiteral final : public Literal {
 
 class StringLiteral final : public Literal {
 public:
-    explicit StringLiteral(String value, bool is_use_strict_directive = false)
-        : m_value(move(value))
+    explicit StringLiteral(SourceRange source_range, String value, bool is_use_strict_directive = false)
+        : Literal(move(source_range))
+        , m_value(move(value))
         , m_is_use_strict_directive(is_use_strict_directive)
     {
     }
@@ -639,7 +709,10 @@ class StringLiteral final : public Literal {
 
 class NullLiteral final : public Literal {
 public:
-    explicit NullLiteral() { }
+    explicit NullLiteral(SourceRange source_range)
+        : Literal(move(source_range))
+    {
+    }
 
     virtual Value execute(Interpreter&, GlobalObject&) const override;
     virtual void dump(int indent) const override;
@@ -650,8 +723,9 @@ class NullLiteral final : public Literal {
 
 class RegExpLiteral final : public Literal {
 public:
-    explicit RegExpLiteral(String content, String flags)
-        : m_content(content)
+    explicit RegExpLiteral(SourceRange source_range, String content, String flags)
+        : Literal(move(source_range))
+        , m_content(content)
         , m_flags(flags)
     {
     }
@@ -671,8 +745,9 @@ class RegExpLiteral final : public Literal {
 
 class Identifier final : public Expression {
 public:
-    explicit Identifier(const FlyString& string)
-        : m_string(string)
+    explicit Identifier(SourceRange source_range, const FlyString& string)
+        : Expression(move(source_range))
+        , m_string(string)
     {
     }
 
@@ -697,8 +772,9 @@ class ClassMethod final : public ASTNode {
         Setter,
     };
 
-    ClassMethod(NonnullRefPtr<Expression> key, NonnullRefPtr<FunctionExpression> function, Kind kind, bool is_static)
-        : m_key(move(key))
+    ClassMethod(SourceRange source_range, NonnullRefPtr<Expression> key, NonnullRefPtr<FunctionExpression> function, Kind kind, bool is_static)
+        : ASTNode(move(source_range))
+        , m_key(move(key))
         , m_function(move(function))
         , m_kind(kind)
         , m_is_static(is_static)
@@ -723,6 +799,11 @@ class ClassMethod final : public ASTNode {
 
 class SuperExpression final : public Expression {
 public:
+    SuperExpression(SourceRange source_range)
+        : Expression(move(source_range))
+    {
+    }
+
     virtual Value execute(Interpreter&, GlobalObject&) const override;
     virtual void dump(int indent) const override;
 
@@ -733,8 +814,9 @@ class SuperExpression final : public Expression {
 
 class ClassExpression final : public Expression {
 public:
-    ClassExpression(String name, RefPtr<FunctionExpression> constructor, RefPtr<Expression> super_class, NonnullRefPtrVector<ClassMethod> methods)
-        : m_name(move(name))
+    ClassExpression(SourceRange source_range, String name, RefPtr<FunctionExpression> constructor, RefPtr<Expression> super_class, NonnullRefPtrVector<ClassMethod> methods)
+        : Expression(move(source_range))
+        , m_name(move(name))
         , m_constructor(move(constructor))
         , m_super_class(move(super_class))
         , m_methods(move(methods))
@@ -757,8 +839,9 @@ class ClassExpression final : public Expression {
 
 class ClassDeclaration final : public Declaration {
 public:
-    ClassDeclaration(NonnullRefPtr<ClassExpression> class_expression)
-        : m_class_expression(move(class_expression))
+    ClassDeclaration(SourceRange source_range, NonnullRefPtr<ClassExpression> class_expression)
+        : Declaration(move(source_range))
+        , m_class_expression(move(class_expression))
     {
     }
 
@@ -772,8 +855,9 @@ class ClassDeclaration final : public Declaration {
 
 class SpreadExpression final : public Expression {
 public:
-    explicit SpreadExpression(NonnullRefPtr<Expression> target)
-        : m_target(target)
+    explicit SpreadExpression(SourceRange source_range, NonnullRefPtr<Expression> target)
+        : Expression(move(source_range))
+        , m_target(target)
     {
     }
 
@@ -789,6 +873,10 @@ class SpreadExpression final : public Expression {
 
 class ThisExpression final : public Expression {
 public:
+    ThisExpression(SourceRange source_range)
+        : Expression(move(source_range))
+    {
+    }
     virtual Value execute(Interpreter&, GlobalObject&) const override;
     virtual void dump(int indent) const override;
 
@@ -803,8 +891,9 @@ class CallExpression : public Expression {
         bool is_spread;
     };
 
-    CallExpression(NonnullRefPtr<Expression> callee, Vector<Argument> arguments = {})
-        : m_callee(move(callee))
+    CallExpression(SourceRange source_range, NonnullRefPtr<Expression> callee, Vector<Argument> arguments = {})
+        : Expression(move(source_range))
+        , m_callee(move(callee))
         , m_arguments(move(arguments))
     {
     }
@@ -828,8 +917,8 @@ class CallExpression : public Expression {
 
 class NewExpression final : public CallExpression {
 public:
-    NewExpression(NonnullRefPtr<Expression> callee, Vector<Argument> arguments = {})
-        : CallExpression(move(callee), move(arguments))
+    NewExpression(SourceRange source_range, NonnullRefPtr<Expression> callee, Vector<Argument> arguments = {})
+        : CallExpression(move(source_range), move(callee), move(arguments))
     {
     }
 
@@ -860,8 +949,9 @@ enum class AssignmentOp {
 
 class AssignmentExpression final : public Expression {
 public:
-    AssignmentExpression(AssignmentOp op, NonnullRefPtr<Expression> lhs, NonnullRefPtr<Expression> rhs)
-        : m_op(op)
+    AssignmentExpression(SourceRange source_range, AssignmentOp op, NonnullRefPtr<Expression> lhs, NonnullRefPtr<Expression> rhs)
+        : Expression(move(source_range))
+        , m_op(op)
         , m_lhs(move(lhs))
         , m_rhs(move(rhs))
     {
@@ -885,8 +975,9 @@ enum class UpdateOp {
 
 class UpdateExpression final : public Expression {
 public:
-    UpdateExpression(UpdateOp op, NonnullRefPtr<Expression> argument, bool prefixed = false)
-        : m_op(op)
+    UpdateExpression(SourceRange source_range, UpdateOp op, NonnullRefPtr<Expression> argument, bool prefixed = false)
+        : Expression(move(source_range))
+        , m_op(op)
         , m_argument(move(argument))
         , m_prefixed(prefixed)
     {
@@ -911,13 +1002,15 @@ enum class DeclarationKind {
 
 class VariableDeclarator final : public ASTNode {
 public:
-    VariableDeclarator(NonnullRefPtr<Identifier> id)
-        : m_id(move(id))
+    VariableDeclarator(SourceRange source_range, NonnullRefPtr<Identifier> id)
+        : ASTNode(move(source_range))
+        , m_id(move(id))
     {
     }
 
-    VariableDeclarator(NonnullRefPtr<Identifier> id, RefPtr<Expression> init)
-        : m_id(move(id))
+    VariableDeclarator(SourceRange source_range, NonnullRefPtr<Identifier> id, RefPtr<Expression> init)
+        : ASTNode(move(source_range))
+        , m_id(move(id))
         , m_init(move(init))
     {
     }
@@ -937,8 +1030,9 @@ class VariableDeclarator final : public ASTNode {
 
 class VariableDeclaration final : public Declaration {
 public:
-    VariableDeclaration(DeclarationKind declaration_kind, NonnullRefPtrVector<VariableDeclarator> declarations)
-        : m_declaration_kind(declaration_kind)
+    VariableDeclaration(SourceRange source_range, DeclarationKind declaration_kind, NonnullRefPtrVector<VariableDeclarator> declarations)
+        : Declaration(move(source_range))
+        , m_declaration_kind(declaration_kind)
         , m_declarations(move(declarations))
     {
     }
@@ -967,8 +1061,9 @@ class ObjectProperty final : public ASTNode {
         Spread,
     };
 
-    ObjectProperty(NonnullRefPtr<Expression> key, RefPtr<Expression> value, Type property_type, bool is_method)
-        : m_key(move(key))
+    ObjectProperty(SourceRange source_range, NonnullRefPtr<Expression> key, RefPtr<Expression> value, Type property_type, bool is_method)
+        : ASTNode(move(source_range))
+        , m_key(move(key))
         , m_value(move(value))
         , m_property_type(property_type)
         , m_is_method(is_method)
@@ -999,8 +1094,9 @@ class ObjectProperty final : public ASTNode {
 
 class ObjectExpression final : public Expression {
 public:
-    ObjectExpression(NonnullRefPtrVector<ObjectProperty> properties = {})
-        : m_properties(move(properties))
+    ObjectExpression(SourceRange source_range, NonnullRefPtrVector<ObjectProperty> properties = {})
+        : Expression(move(source_range))
+        , m_properties(move(properties))
     {
     }
 
@@ -1015,8 +1111,9 @@ class ObjectExpression final : public Expression {
 
 class ArrayExpression final : public Expression {
 public:
-    ArrayExpression(Vector<RefPtr<Expression>> elements)
-        : m_elements(move(elements))
+    ArrayExpression(SourceRange source_range, Vector<RefPtr<Expression>> elements)
+        : Expression(move(source_range))
+        , m_elements(move(elements))
     {
     }
 
@@ -1033,13 +1130,15 @@ class ArrayExpression final : public Expression {
 
 class TemplateLiteral final : public Expression {
 public:
-    TemplateLiteral(NonnullRefPtrVector<Expression> expressions)
-        : m_expressions(move(expressions))
+    TemplateLiteral(SourceRange source_range, NonnullRefPtrVector<Expression> expressions)
+        : Expression(move(source_range))
+        , m_expressions(move(expressions))
     {
     }
 
-    TemplateLiteral(NonnullRefPtrVector<Expression> expressions, NonnullRefPtrVector<Expression> raw_strings)
-        : m_expressions(move(expressions))
+    TemplateLiteral(SourceRange source_range, NonnullRefPtrVector<Expression> expressions, NonnullRefPtrVector<Expression> raw_strings)
+        : Expression(move(source_range))
+        , m_expressions(move(expressions))
         , m_raw_strings(move(raw_strings))
     {
     }
@@ -1059,8 +1158,9 @@ class TemplateLiteral final : public Expression {
 
 class TaggedTemplateLiteral final : public Expression {
 public:
-    TaggedTemplateLiteral(NonnullRefPtr<Expression> tag, NonnullRefPtr<TemplateLiteral> template_literal)
-        : m_tag(move(tag))
+    TaggedTemplateLiteral(SourceRange source_range, NonnullRefPtr<Expression> tag, NonnullRefPtr<TemplateLiteral> template_literal)
+        : Expression(move(source_range))
+        , m_tag(move(tag))
         , m_template_literal(move(template_literal))
     {
     }
@@ -1077,8 +1177,9 @@ class TaggedTemplateLiteral final : public Expression {
 
 class MemberExpression final : public Expression {
 public:
-    MemberExpression(NonnullRefPtr<Expression> object, NonnullRefPtr<Expression> property, bool computed = false)
-        : m_object(move(object))
+    MemberExpression(SourceRange source_range, NonnullRefPtr<Expression> object, NonnullRefPtr<Expression> property, bool computed = false)
+        : Expression(move(source_range))
+        , m_object(move(object))
         , m_property(move(property))
         , m_computed(computed)
     {
@@ -1112,8 +1213,9 @@ class MetaProperty final : public Expression {
         ImportMeta,
     };
 
-    MetaProperty(Type type)
-        : m_type(type)
+    MetaProperty(SourceRange source_range, Type type)
+        : Expression(move(source_range))
+        , m_type(type)
     {
     }
 
@@ -1128,8 +1230,9 @@ class MetaProperty final : public Expression {
 
 class ConditionalExpression final : public Expression {
 public:
-    ConditionalExpression(NonnullRefPtr<Expression> test, NonnullRefPtr<Expression> consequent, NonnullRefPtr<Expression> alternate)
-        : m_test(move(test))
+    ConditionalExpression(SourceRange source_range, NonnullRefPtr<Expression> test, NonnullRefPtr<Expression> consequent, NonnullRefPtr<Expression> alternate)
+        : Expression(move(source_range))
+        , m_test(move(test))
         , m_consequent(move(consequent))
         , m_alternate(move(alternate))
     {
@@ -1148,8 +1251,9 @@ class ConditionalExpression final : public Expression {
 
 class CatchClause final : public ASTNode {
 public:
-    CatchClause(const FlyString& parameter, NonnullRefPtr<BlockStatement> body)
-        : m_parameter(parameter)
+    CatchClause(SourceRange source_range, const FlyString& parameter, NonnullRefPtr<BlockStatement> body)
+        : ASTNode(move(source_range))
+        , m_parameter(parameter)
         , m_body(move(body))
     {
     }
@@ -1169,8 +1273,9 @@ class CatchClause final : public ASTNode {
 
 class TryStatement final : public Statement {
 public:
-    TryStatement(NonnullRefPtr<BlockStatement> block, RefPtr<CatchClause> handler, RefPtr<BlockStatement> finalizer)
-        : m_block(move(block))
+    TryStatement(SourceRange source_range, NonnullRefPtr<BlockStatement> block, RefPtr<CatchClause> handler, RefPtr<BlockStatement> finalizer)
+        : Statement(move(source_range))
+        , m_block(move(block))
         , m_handler(move(handler))
         , m_finalizer(move(finalizer))
     {
@@ -1193,8 +1298,9 @@ class TryStatement final : public Statement {
 
 class ThrowStatement final : public Statement {
 public:
-    explicit ThrowStatement(NonnullRefPtr<Expression> argument)
-        : m_argument(move(argument))
+    explicit ThrowStatement(SourceRange source_range, NonnullRefPtr<Expression> argument)
+        : Statement(move(source_range))
+        , m_argument(move(argument))
     {
     }
 
@@ -1211,8 +1317,9 @@ class ThrowStatement final : public Statement {
 
 class SwitchCase final : public ASTNode {
 public:
-    SwitchCase(RefPtr<Expression> test, NonnullRefPtrVector<Statement> consequent)
-        : m_test(move(test))
+    SwitchCase(SourceRange source_range, RefPtr<Expression> test, NonnullRefPtrVector<Statement> consequent)
+        : ASTNode(move(source_range))
+        , m_test(move(test))
         , m_consequent(move(consequent))
     {
     }
@@ -1232,8 +1339,9 @@ class SwitchCase final : public ASTNode {
 
 class SwitchStatement final : public Statement {
 public:
-    SwitchStatement(NonnullRefPtr<Expression> discriminant, NonnullRefPtrVector<SwitchCase> cases)
-        : m_discriminant(move(discriminant))
+    SwitchStatement(SourceRange source_range, NonnullRefPtr<Expression> discriminant, NonnullRefPtrVector<SwitchCase> cases)
+        : Statement(move(source_range))
+        , m_discriminant(move(discriminant))
         , m_cases(move(cases))
     {
     }
@@ -1250,8 +1358,9 @@ class SwitchStatement final : public Statement {
 
 class BreakStatement final : public Statement {
 public:
-    BreakStatement(FlyString target_label)
-        : m_target_label(target_label)
+    BreakStatement(SourceRange source_range, FlyString target_label)
+        : Statement(move(source_range))
+        , m_target_label(target_label)
     {
     }
 
@@ -1267,8 +1376,9 @@ class BreakStatement final : public Statement {
 
 class ContinueStatement final : public Statement {
 public:
-    ContinueStatement(FlyString target_label)
-        : m_target_label(target_label)
+    ContinueStatement(SourceRange source_range, FlyString target_label)
+        : Statement(move(source_range))
+        , m_target_label(target_label)
     {
     }
 
@@ -1284,7 +1394,10 @@ class ContinueStatement final : public Statement {
 
 class DebuggerStatement final : public Statement {
 public:
-    DebuggerStatement() { }
+    DebuggerStatement(SourceRange source_range)
+        : Statement(move(source_range))
+    {
+    }
 
     virtual Value execute(Interpreter&, GlobalObject&) const override;
 
diff --git a/Libraries/LibJS/Interpreter.cpp b/Libraries/LibJS/Interpreter.cpp
index b6a35610e620..c46bf4847535 100644
--- a/Libraries/LibJS/Interpreter.cpp
+++ b/Libraries/LibJS/Interpreter.cpp
@@ -143,6 +143,16 @@ void Interpreter::exit_scope(const ScopeNode& scope_node)
         vm().unwind(ScopeType::None);
 }
 
+void Interpreter::enter_node(const ASTNode& node)
+{
+    vm().push_ast_node(node);
+}
+
+void Interpreter::exit_node(const ASTNode&)
+{
+    vm().pop_ast_node();
+}
+
 void Interpreter::push_scope(ScopeFrame frame)
 {
     m_scope_stack.append(move(frame));
diff --git a/Libraries/LibJS/Interpreter.h b/Libraries/LibJS/Interpreter.h
index 9d27ac9c2ce0..f32e4e1ccb78 100644
--- a/Libraries/LibJS/Interpreter.h
+++ b/Libraries/LibJS/Interpreter.h
@@ -77,6 +77,9 @@ class Interpreter : public Weakable<Interpreter> {
     void enter_scope(const ScopeNode&, ScopeType, GlobalObject&);
     void exit_scope(const ScopeNode&);
 
+    void enter_node(const ASTNode&);
+    void exit_node(const ASTNode&);
+
     Value execute_statement(GlobalObject&, const Statement&, ScopeType = ScopeType::Block);
 
 private:
diff --git a/Libraries/LibJS/Parser.cpp b/Libraries/LibJS/Parser.cpp
index d7896d9c3236..2edb9f6bf3c4 100644
--- a/Libraries/LibJS/Parser.cpp
+++ b/Libraries/LibJS/Parser.cpp
@@ -246,8 +246,9 @@ Associativity Parser::operator_associativity(TokenType type) const
 
 NonnullRefPtr<Program> Parser::parse_program()
 {
+    auto rule_start = push_start();
     ScopePusher scope(*this, ScopePusher::Var | ScopePusher::Let | ScopePusher::Function);
-    auto program = adopt(*new Program);
+    auto program = adopt(*new Program({ rule_start.position(), position() }));
 
     bool first = true;
     while (!done()) {
@@ -277,11 +278,13 @@ NonnullRefPtr<Program> Parser::parse_program()
     } else {
         syntax_error(""Unclosed scope"");
     }
+    program->source_range().end = position();
     return program;
 }
 
 NonnullRefPtr<Declaration> Parser::parse_declaration()
 {
+    auto rule_start = push_start();
     switch (m_parser_state.m_current_token.type()) {
     case TokenType::Class:
         return parse_class_declaration();
@@ -296,12 +299,13 @@ NonnullRefPtr<Declaration> Parser::parse_declaration()
     default:
         expected(""declaration"");
         consume();
-        return create_ast_node<ErrorDeclaration>();
+        return create_ast_node<ErrorDeclaration>({ rule_start.position(), position() });
     }
 }
 
 NonnullRefPtr<Statement> Parser::parse_statement()
 {
+    auto rule_start = push_start();
     switch (m_parser_state.m_current_token.type()) {
     case TokenType::CurlyOpen:
         return parse_block_statement();
@@ -335,7 +339,7 @@ NonnullRefPtr<Statement> Parser::parse_statement()
         return parse_debugger_statement();
     case TokenType::Semicolon:
         consume();
-        return create_ast_node<EmptyStatement>();
+        return create_ast_node<EmptyStatement>({ rule_start.position(), position() });
     default:
         if (match(TokenType::Identifier)) {
             auto result = try_parse_labelled_statement();
@@ -347,16 +351,17 @@ NonnullRefPtr<Statement> Parser::parse_statement()
                 syntax_error(""Function declaration not allowed in single-statement context"");
             auto expr = parse_expression(0);
             consume_or_insert_semicolon();
-            return create_ast_node<ExpressionStatement>(move(expr));
+            return create_ast_node<ExpressionStatement>({ rule_start.position(), position() }, move(expr));
         }
         expected(""statement"");
         consume();
-        return create_ast_node<ErrorStatement>();
+        return create_ast_node<ErrorStatement>({ rule_start.position(), position() });
     }
 }
 
 RefPtr<FunctionExpression> Parser::try_parse_arrow_function_expression(bool expect_parens)
 {
+    auto rule_start = push_start();
     save_state();
     m_parser_state.m_var_scopes.append(NonnullRefPtrVector<VariableDeclaration>());
 
@@ -418,8 +423,8 @@ RefPtr<FunctionExpression> Parser::try_parse_arrow_function_expression(bool expe
             // Esprima generates a single ""ArrowFunctionExpression""
             // with a ""body"" property.
             auto return_expression = parse_expression(2);
-            auto return_block = create_ast_node<BlockStatement>();
-            return_block->append<ReturnStatement>(move(return_expression));
+            auto return_block = create_ast_node<BlockStatement>({ rule_start.position(), position() });
+            return_block->append<ReturnStatement>({ rule_start.position(), position() }, move(return_expression));
             return return_block;
         }
         // Invalid arrow function body
@@ -429,7 +434,7 @@ RefPtr<FunctionExpression> Parser::try_parse_arrow_function_expression(bool expe
     if (!function_body_result.is_null()) {
         state_rollback_guard.disarm();
         auto body = function_body_result.release_nonnull();
-        return create_ast_node<FunctionExpression>("""", move(body), move(parameters), function_length, m_parser_state.m_var_scopes.take_last(), is_strict, true);
+        return create_ast_node<FunctionExpression>({ rule_start.position(), position() }, """", move(body), move(parameters), function_length, m_parser_state.m_var_scopes.take_last(), is_strict, true);
     }
 
     return nullptr;
@@ -437,6 +442,7 @@ RefPtr<FunctionExpression> Parser::try_parse_arrow_function_expression(bool expe
 
 RefPtr<Statement> Parser::try_parse_labelled_statement()
 {
+    auto rule_start = push_start();
     save_state();
     ArmedScopeGuard state_rollback_guard = [&] {
         load_state();
@@ -460,6 +466,7 @@ RefPtr<Statement> Parser::try_parse_labelled_statement()
 
 RefPtr<MetaProperty> Parser::try_parse_new_target_expression()
 {
+    auto rule_start = push_start();
     save_state();
     ArmedScopeGuard state_rollback_guard = [&] {
         load_state();
@@ -475,16 +482,18 @@ RefPtr<MetaProperty> Parser::try_parse_new_target_expression()
         return {};
 
     state_rollback_guard.disarm();
-    return create_ast_node<MetaProperty>(MetaProperty::Type::NewTarget);
+    return create_ast_node<MetaProperty>({ rule_start.position(), position() }, MetaProperty::Type::NewTarget);
 }
 
 NonnullRefPtr<ClassDeclaration> Parser::parse_class_declaration()
 {
-    return create_ast_node<ClassDeclaration>(parse_class_expression(true));
+    auto rule_start = push_start();
+    return create_ast_node<ClassDeclaration>({ rule_start.position(), position() }, parse_class_expression(true));
 }
 
 NonnullRefPtr<ClassExpression> Parser::parse_class_expression(bool expect_class_name)
 {
+    auto rule_start = push_start();
     // Classes are always in strict mode.
     TemporaryChange strict_mode_rollback(m_parser_state.m_strict_mode, true);
 
@@ -537,7 +546,7 @@ NonnullRefPtr<ClassExpression> Parser::parse_class_expression(bool expect_class_
                 switch (m_parser_state.m_current_token.type()) {
                 case TokenType::Identifier:
                     name = consume().value();
-                    property_key = create_ast_node<StringLiteral>(name);
+                    property_key = create_ast_node<StringLiteral>({ rule_start.position(), position() }, name);
                     break;
                 case TokenType::StringLiteral: {
                     auto string_literal = parse_string_literal(consume());
@@ -577,7 +586,7 @@ NonnullRefPtr<ClassExpression> Parser::parse_class_expression(bool expect_class_
             if (is_constructor) {
                 constructor = move(function);
             } else if (!property_key.is_null()) {
-                methods.append(create_ast_node<ClassMethod>(property_key.release_nonnull(), move(function), method_kind, is_static));
+                methods.append(create_ast_node<ClassMethod>({ rule_start.position(), position() }, property_key.release_nonnull(), move(function), method_kind, is_static));
             } else {
                 syntax_error(""No key for class method"");
             }
@@ -590,25 +599,26 @@ NonnullRefPtr<ClassExpression> Parser::parse_class_expression(bool expect_class_
     consume(TokenType::CurlyClose);
 
     if (constructor.is_null()) {
-        auto constructor_body = create_ast_node<BlockStatement>();
+        auto constructor_body = create_ast_node<BlockStatement>({ rule_start.position(), position() });
         if (!super_class.is_null()) {
             // Set constructor to the result of parsing the source text
             // constructor(... args){ super (...args);}
-            auto super_call = create_ast_node<CallExpression>(create_ast_node<SuperExpression>(), Vector { CallExpression::Argument { create_ast_node<Identifier>(""args""), true } });
-            constructor_body->append(create_ast_node<ExpressionStatement>(move(super_call)));
+            auto super_call = create_ast_node<CallExpression>({ rule_start.position(), position() }, create_ast_node<SuperExpression>({ rule_start.position(), position() }), Vector { CallExpression::Argument { create_ast_node<Identifier>({ rule_start.position(), position() }, ""args""), true } });
+            constructor_body->append(create_ast_node<ExpressionStatement>({ rule_start.position(), position() }, move(super_call)));
             constructor_body->add_variables(m_parser_state.m_var_scopes.last());
 
-            constructor = create_ast_node<FunctionExpression>(class_name, move(constructor_body), Vector { FunctionNode::Parameter { ""args"", nullptr, true } }, 0, NonnullRefPtrVector<VariableDeclaration>(), true);
+            constructor = create_ast_node<FunctionExpression>({ rule_start.position(), position() }, class_name, move(constructor_body), Vector { FunctionNode::Parameter { ""args"", nullptr, true } }, 0, NonnullRefPtrVector<VariableDeclaration>(), true);
         } else {
-            constructor = create_ast_node<FunctionExpression>(class_name, move(constructor_body), Vector<FunctionNode::Parameter> {}, 0, NonnullRefPtrVector<VariableDeclaration>(), true);
+            constructor = create_ast_node<FunctionExpression>({ rule_start.position(), position() }, class_name, move(constructor_body), Vector<FunctionNode::Parameter> {}, 0, NonnullRefPtrVector<VariableDeclaration>(), true);
         }
     }
 
-    return create_ast_node<ClassExpression>(move(class_name), move(constructor), move(super_class), move(methods));
+    return create_ast_node<ClassExpression>({ rule_start.position(), position() }, move(class_name), move(constructor), move(super_class), move(methods));
 }
 
 NonnullRefPtr<Expression> Parser::parse_primary_expression()
 {
+    auto rule_start = push_start();
     if (match_unary_prefixed_expression())
         return parse_unary_prefixed_expression();
 
@@ -626,31 +636,31 @@ NonnullRefPtr<Expression> Parser::parse_primary_expression()
     }
     case TokenType::This:
         consume();
-        return create_ast_node<ThisExpression>();
+        return create_ast_node<ThisExpression>({ rule_start.position(), position() });
     case TokenType::Class:
         return parse_class_expression(false);
     case TokenType::Super:
         consume();
         if (!m_parser_state.m_allow_super_property_lookup)
             syntax_error(""'super' keyword unexpected here"");
-        return create_ast_node<SuperExpression>();
+        return create_ast_node<SuperExpression>({ rule_start.position(), position() });
     case TokenType::Identifier: {
         auto arrow_function_result = try_parse_arrow_function_expression(false);
         if (!arrow_function_result.is_null())
             return arrow_function_result.release_nonnull();
-        return create_ast_node<Identifier>(consume().value());
+        return create_ast_node<Identifier>({ rule_start.position(), position() }, consume().value());
     }
     case TokenType::NumericLiteral:
-        return create_ast_node<NumericLiteral>(consume_and_validate_numeric_literal().double_value());
+        return create_ast_node<NumericLiteral>({ rule_start.position(), position() }, consume_and_validate_numeric_literal().double_value());
     case TokenType::BigIntLiteral:
-        return create_ast_node<BigIntLiteral>(consume().value());
+        return create_ast_node<BigIntLiteral>({ rule_start.position(), position() }, consume().value());
     case TokenType::BoolLiteral:
-        return create_ast_node<BooleanLiteral>(consume().bool_value());
+        return create_ast_node<BooleanLiteral>({ rule_start.position(), position() }, consume().bool_value());
     case TokenType::StringLiteral:
         return parse_string_literal(consume());
     case TokenType::NullLiteral:
         consume();
-        return create_ast_node<NullLiteral>();
+        return create_ast_node<NullLiteral>({ rule_start.position(), position() });
     case TokenType::CurlyOpen:
         return parse_object_expression();
     case TokenType::Function:
@@ -674,19 +684,21 @@ NonnullRefPtr<Expression> Parser::parse_primary_expression()
     default:
         expected(""primary expression"");
         consume();
-        return create_ast_node<ErrorExpression>();
+        return create_ast_node<ErrorExpression>({ rule_start.position(), position() });
     }
 }
 
 NonnullRefPtr<RegExpLiteral> Parser::parse_regexp_literal()
 {
+    auto rule_start = push_start();
     auto content = consume().value();
     auto flags = match(TokenType::RegexFlags) ? consume().value() : """";
-    return create_ast_node<RegExpLiteral>(content.substring_view(1, content.length() - 2), flags);
+    return create_ast_node<RegExpLiteral>({ rule_start.position(), position() }, content.substring_view(1, content.length() - 2), flags);
 }
 
 NonnullRefPtr<Expression> Parser::parse_unary_prefixed_expression()
 {
+    auto rule_start = push_start();
     auto precedence = g_operator_precedence.get(m_parser_state.m_current_token.type());
     auto associativity = operator_associativity(m_parser_state.m_current_token.type());
     switch (m_parser_state.m_current_token.type()) {
@@ -698,7 +710,7 @@ NonnullRefPtr<Expression> Parser::parse_unary_prefixed_expression()
         // other engines throw ReferenceError for ++foo()
         if (!rhs->is_identifier() && !rhs->is_member_expression())
             syntax_error(String::formatted(""Right-hand side of prefix increment operator must be identifier or member expression, got {}"", rhs->class_name()), rhs_start);
-        return create_ast_node<UpdateExpression>(UpdateOp::Increment, move(rhs), true);
+        return create_ast_node<UpdateExpression>({ rule_start.position(), position() }, UpdateOp::Increment, move(rhs), true);
     }
     case TokenType::MinusMinus: {
         consume();
@@ -708,44 +720,45 @@ NonnullRefPtr<Expression> Parser::parse_unary_prefixed_expression()
         // other engines throw ReferenceError for --foo()
         if (!rhs->is_identifier() && !rhs->is_member_expression())
             syntax_error(String::formatted(""Right-hand side of prefix decrement operator must be identifier or member expression, got {}"", rhs->class_name()), rhs_start);
-        return create_ast_node<UpdateExpression>(UpdateOp::Decrement, move(rhs), true);
+        return create_ast_node<UpdateExpression>({ rule_start.position(), position() }, UpdateOp::Decrement, move(rhs), true);
     }
     case TokenType::ExclamationMark:
         consume();
-        return create_ast_node<UnaryExpression>(UnaryOp::Not, parse_expression(precedence, associativity));
+        return create_ast_node<UnaryExpression>({ rule_start.position(), position() }, UnaryOp::Not, parse_expression(precedence, associativity));
     case TokenType::Tilde:
         consume();
-        return create_ast_node<UnaryExpression>(UnaryOp::BitwiseNot, parse_expression(precedence, associativity));
+        return create_ast_node<UnaryExpression>({ rule_start.position(), position() }, UnaryOp::BitwiseNot, parse_expression(precedence, associativity));
     case TokenType::Plus:
         consume();
-        return create_ast_node<UnaryExpression>(UnaryOp::Plus, parse_expression(precedence, associativity));
+        return create_ast_node<UnaryExpression>({ rule_start.position(), position() }, UnaryOp::Plus, parse_expression(precedence, associativity));
     case TokenType::Minus:
         consume();
-        return create_ast_node<UnaryExpression>(UnaryOp::Minus, parse_expression(precedence, associativity));
+        return create_ast_node<UnaryExpression>({ rule_start.position(), position() }, UnaryOp::Minus, parse_expression(precedence, associativity));
     case TokenType::Typeof:
         consume();
-        return create_ast_node<UnaryExpression>(UnaryOp::Typeof, parse_expression(precedence, associativity));
+        return create_ast_node<UnaryExpression>({ rule_start.position(), position() }, UnaryOp::Typeof, parse_expression(precedence, associativity));
     case TokenType::Void:
         consume();
-        return create_ast_node<UnaryExpression>(UnaryOp::Void, parse_expression(precedence, associativity));
+        return create_ast_node<UnaryExpression>({ rule_start.position(), position() }, UnaryOp::Void, parse_expression(precedence, associativity));
     case TokenType::Delete:
         consume();
-        return create_ast_node<UnaryExpression>(UnaryOp::Delete, parse_expression(precedence, associativity));
+        return create_ast_node<UnaryExpression>({ rule_start.position(), position() }, UnaryOp::Delete, parse_expression(precedence, associativity));
     default:
         expected(""primary expression"");
         consume();
-        return create_ast_node<ErrorExpression>();
+        return create_ast_node<ErrorExpression>({ rule_start.position(), position() });
     }
 }
 
 NonnullRefPtr<Expression> Parser::parse_property_key()
 {
+    auto rule_start = push_start();
     if (match(TokenType::StringLiteral)) {
         return parse_string_literal(consume());
     } else if (match(TokenType::NumericLiteral)) {
-        return create_ast_node<NumericLiteral>(consume().double_value());
+        return create_ast_node<NumericLiteral>({ rule_start.position(), position() }, consume().double_value());
     } else if (match(TokenType::BigIntLiteral)) {
-        return create_ast_node<BigIntLiteral>(consume().value());
+        return create_ast_node<BigIntLiteral>({ rule_start.position(), position() }, consume().value());
     } else if (match(TokenType::BracketOpen)) {
         consume(TokenType::BracketOpen);
         auto result = parse_expression(0);
@@ -754,12 +767,13 @@ NonnullRefPtr<Expression> Parser::parse_property_key()
     } else {
         if (!match_identifier_name())
             expected(""IdentifierName"");
-        return create_ast_node<StringLiteral>(consume().value());
+        return create_ast_node<StringLiteral>({ rule_start.position(), position() }, consume().value());
     }
 }
 
 NonnullRefPtr<ObjectExpression> Parser::parse_object_expression()
 {
+    auto rule_start = push_start();
     consume(TokenType::CurlyOpen);
 
     NonnullRefPtrVector<ObjectProperty> properties;
@@ -778,7 +792,7 @@ NonnullRefPtr<ObjectExpression> Parser::parse_object_expression()
         if (match(TokenType::TripleDot)) {
             consume();
             property_name = parse_expression(4);
-            properties.append(create_ast_node<ObjectProperty>(*property_name, nullptr, ObjectProperty::Type::Spread, false));
+            properties.append(create_ast_node<ObjectProperty>({ rule_start.position(), position() }, *property_name, nullptr, ObjectProperty::Type::Spread, false));
             if (!match(TokenType::Comma))
                 break;
             consume(TokenType::Comma);
@@ -794,8 +808,8 @@ NonnullRefPtr<ObjectExpression> Parser::parse_object_expression()
                 property_type = ObjectProperty::Type::Setter;
                 property_name = parse_property_key();
             } else {
-                property_name = create_ast_node<StringLiteral>(identifier);
-                property_value = create_ast_node<Identifier>(identifier);
+                property_name = create_ast_node<StringLiteral>({ rule_start.position(), position() }, identifier);
+                property_value = create_ast_node<Identifier>({ rule_start.position(), position() }, identifier);
             }
         } else {
             property_name = parse_property_key();
@@ -817,7 +831,7 @@ NonnullRefPtr<ObjectExpression> Parser::parse_object_expression()
             if (property_type == ObjectProperty::Type::Setter)
                 parse_options |= FunctionNodeParseOptions::IsSetterFunction;
             auto function = parse_function_node<FunctionExpression>(parse_options);
-            properties.append(create_ast_node<ObjectProperty>(*property_name, function, property_type, true));
+            properties.append(create_ast_node<ObjectProperty>({ rule_start.position(), position() }, *property_name, function, property_type, true));
         } else if (match(TokenType::Colon)) {
             if (!property_name) {
                 syntax_error(""Expected a property name"");
@@ -825,9 +839,9 @@ NonnullRefPtr<ObjectExpression> Parser::parse_object_expression()
                 continue;
             }
             consume();
-            properties.append(create_ast_node<ObjectProperty>(*property_name, parse_expression(2), property_type, false));
+            properties.append(create_ast_node<ObjectProperty>({ rule_start.position(), position() }, *property_name, parse_expression(2), property_type, false));
         } else if (property_name && property_value) {
-            properties.append(create_ast_node<ObjectProperty>(*property_name, *property_value, property_type, false));
+            properties.append(create_ast_node<ObjectProperty>({ rule_start.position(), position() }, *property_name, *property_value, property_type, false));
         } else {
             syntax_error(""Expected a property"");
             skip_to_next_property();
@@ -840,11 +854,12 @@ NonnullRefPtr<ObjectExpression> Parser::parse_object_expression()
     }
 
     consume(TokenType::CurlyClose);
-    return create_ast_node<ObjectExpression>(properties);
+    return create_ast_node<ObjectExpression>({ rule_start.position(), position() }, properties);
 }
 
 NonnullRefPtr<ArrayExpression> Parser::parse_array_expression()
 {
+    auto rule_start = push_start();
     consume(TokenType::BracketOpen);
 
     Vector<RefPtr<Expression>> elements;
@@ -853,7 +868,7 @@ NonnullRefPtr<ArrayExpression> Parser::parse_array_expression()
 
         if (match(TokenType::TripleDot)) {
             consume(TokenType::TripleDot);
-            expression = create_ast_node<SpreadExpression>(parse_expression(2));
+            expression = create_ast_node<SpreadExpression>({ rule_start.position(), position() }, parse_expression(2));
         } else if (match_expression()) {
             expression = parse_expression(2);
         }
@@ -865,11 +880,12 @@ NonnullRefPtr<ArrayExpression> Parser::parse_array_expression()
     }
 
     consume(TokenType::BracketClose);
-    return create_ast_node<ArrayExpression>(move(elements));
+    return create_ast_node<ArrayExpression>({ rule_start.position(), position() }, move(elements));
 }
 
 NonnullRefPtr<StringLiteral> Parser::parse_string_literal(Token token, bool in_template_literal)
 {
+    auto rule_start = push_start();
     auto status = Token::StringValueStatus::Ok;
     auto string = token.string_value(status);
     if (status != Token::StringValueStatus::Ok) {
@@ -895,18 +911,19 @@ NonnullRefPtr<StringLiteral> Parser::parse_string_literal(Token token, bool in_t
 
     auto is_use_strict_directive = !in_template_literal && (token.value() == ""'use strict'"" || token.value() == ""\""use strict\"""");
 
-    return create_ast_node<StringLiteral>(string, is_use_strict_directive);
+    return create_ast_node<StringLiteral>({ rule_start.position(), position() }, string, is_use_strict_directive);
 }
 
 NonnullRefPtr<TemplateLiteral> Parser::parse_template_literal(bool is_tagged)
 {
+    auto rule_start = push_start();
     consume(TokenType::TemplateLiteralStart);
 
     NonnullRefPtrVector<Expression> expressions;
     NonnullRefPtrVector<Expression> raw_strings;
 
-    auto append_empty_string = [&expressions, &raw_strings, is_tagged]() {
-        auto string_literal = create_ast_node<StringLiteral>("""");
+    auto append_empty_string = [this, &rule_start, &expressions, &raw_strings, is_tagged]() {
+        auto string_literal = create_ast_node<StringLiteral>({ rule_start.position(), position() }, """");
         expressions.append(string_literal);
         if (is_tagged)
             raw_strings.append(string_literal);
@@ -920,18 +937,18 @@ NonnullRefPtr<TemplateLiteral> Parser::parse_template_literal(bool is_tagged)
             auto token = consume();
             expressions.append(parse_string_literal(token, true));
             if (is_tagged)
-                raw_strings.append(create_ast_node<StringLiteral>(token.value()));
+                raw_strings.append(create_ast_node<StringLiteral>({ rule_start.position(), position() }, token.value()));
         } else if (match(TokenType::TemplateLiteralExprStart)) {
             consume(TokenType::TemplateLiteralExprStart);
             if (match(TokenType::TemplateLiteralExprEnd)) {
                 syntax_error(""Empty template literal expression block"");
-                return create_ast_node<TemplateLiteral>(expressions);
+                return create_ast_node<TemplateLiteral>({ rule_start.position(), position() }, expressions);
             }
 
             expressions.append(parse_expression(0));
             if (match(TokenType::UnterminatedTemplateLiteral)) {
                 syntax_error(""Unterminated template literal"");
-                return create_ast_node<TemplateLiteral>(expressions);
+                return create_ast_node<TemplateLiteral>({ rule_start.position(), position() }, expressions);
             }
             consume(TokenType::TemplateLiteralExprEnd);
 
@@ -950,16 +967,17 @@ NonnullRefPtr<TemplateLiteral> Parser::parse_template_literal(bool is_tagged)
     }
 
     if (is_tagged)
-        return create_ast_node<TemplateLiteral>(expressions, raw_strings);
-    return create_ast_node<TemplateLiteral>(expressions);
+        return create_ast_node<TemplateLiteral>({ rule_start.position(), position() }, expressions, raw_strings);
+    return create_ast_node<TemplateLiteral>({ rule_start.position(), position() }, expressions);
 }
 
 NonnullRefPtr<Expression> Parser::parse_expression(int min_precedence, Associativity associativity, Vector<TokenType> forbidden)
 {
+    auto rule_start = push_start();
     auto expression = parse_primary_expression();
     while (match(TokenType::TemplateLiteralStart)) {
         auto template_literal = parse_template_literal(true);
-        expression = create_ast_node<TaggedTemplateLiteral>(move(expression), move(template_literal));
+        expression = create_ast_node<TaggedTemplateLiteral>({ rule_start.position(), position() }, move(expression), move(template_literal));
     }
     while (match_secondary_expression(forbidden)) {
         int new_precedence = g_operator_precedence.get(m_parser_state.m_current_token.type());
@@ -972,7 +990,7 @@ NonnullRefPtr<Expression> Parser::parse_expression(int min_precedence, Associati
         expression = parse_secondary_expression(move(expression), new_precedence, new_associativity);
         while (match(TokenType::TemplateLiteralStart)) {
             auto template_literal = parse_template_literal(true);
-            expression = create_ast_node<TaggedTemplateLiteral>(move(expression), move(template_literal));
+            expression = create_ast_node<TaggedTemplateLiteral>({ rule_start.position(), position() }, move(expression), move(template_literal));
         }
     }
     if (match(TokenType::Comma) && min_precedence <= 1) {
@@ -982,102 +1000,103 @@ NonnullRefPtr<Expression> Parser::parse_expression(int min_precedence, Associati
             consume();
             expressions.append(parse_expression(2));
         }
-        expression = create_ast_node<SequenceExpression>(move(expressions));
+        expression = create_ast_node<SequenceExpression>({ rule_start.position(), position() }, move(expressions));
     }
     return expression;
 }
 
 NonnullRefPtr<Expression> Parser::parse_secondary_expression(NonnullRefPtr<Expression> lhs, int min_precedence, Associativity associativity)
 {
+    auto rule_start = push_start();
     switch (m_parser_state.m_current_token.type()) {
     case TokenType::Plus:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::Addition, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::Addition, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::PlusEquals:
         return parse_assignment_expression(AssignmentOp::AdditionAssignment, move(lhs), min_precedence, associativity);
     case TokenType::Minus:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::Subtraction, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::Subtraction, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::MinusEquals:
         return parse_assignment_expression(AssignmentOp::SubtractionAssignment, move(lhs), min_precedence, associativity);
     case TokenType::Asterisk:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::Multiplication, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::Multiplication, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::AsteriskEquals:
         return parse_assignment_expression(AssignmentOp::MultiplicationAssignment, move(lhs), min_precedence, associativity);
     case TokenType::Slash:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::Division, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::Division, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::SlashEquals:
         return parse_assignment_expression(AssignmentOp::DivisionAssignment, move(lhs), min_precedence, associativity);
     case TokenType::Percent:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::Modulo, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::Modulo, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::PercentEquals:
         return parse_assignment_expression(AssignmentOp::ModuloAssignment, move(lhs), min_precedence, associativity);
     case TokenType::DoubleAsterisk:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::Exponentiation, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::Exponentiation, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::DoubleAsteriskEquals:
         return parse_assignment_expression(AssignmentOp::ExponentiationAssignment, move(lhs), min_precedence, associativity);
     case TokenType::GreaterThan:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::GreaterThan, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::GreaterThan, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::GreaterThanEquals:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::GreaterThanEquals, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::GreaterThanEquals, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::LessThan:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::LessThan, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::LessThan, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::LessThanEquals:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::LessThanEquals, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::LessThanEquals, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::EqualsEqualsEquals:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::TypedEquals, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::TypedEquals, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::ExclamationMarkEqualsEquals:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::TypedInequals, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::TypedInequals, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::EqualsEquals:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::AbstractEquals, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::AbstractEquals, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::ExclamationMarkEquals:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::AbstractInequals, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::AbstractInequals, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::In:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::In, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::In, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::Instanceof:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::InstanceOf, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::InstanceOf, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::Ampersand:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::BitwiseAnd, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::BitwiseAnd, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::AmpersandEquals:
         return parse_assignment_expression(AssignmentOp::BitwiseAndAssignment, move(lhs), min_precedence, associativity);
     case TokenType::Pipe:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::BitwiseOr, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::BitwiseOr, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::PipeEquals:
         return parse_assignment_expression(AssignmentOp::BitwiseOrAssignment, move(lhs), min_precedence, associativity);
     case TokenType::Caret:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::BitwiseXor, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::BitwiseXor, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::CaretEquals:
         return parse_assignment_expression(AssignmentOp::BitwiseXorAssignment, move(lhs), min_precedence, associativity);
     case TokenType::ShiftLeft:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::LeftShift, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::LeftShift, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::ShiftLeftEquals:
         return parse_assignment_expression(AssignmentOp::LeftShiftAssignment, move(lhs), min_precedence, associativity);
     case TokenType::ShiftRight:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::RightShift, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::RightShift, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::ShiftRightEquals:
         return parse_assignment_expression(AssignmentOp::RightShiftAssignment, move(lhs), min_precedence, associativity);
     case TokenType::UnsignedShiftRight:
         consume();
-        return create_ast_node<BinaryExpression>(BinaryOp::UnsignedRightShift, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<BinaryExpression>({ rule_start.position(), position() }, BinaryOp::UnsignedRightShift, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::UnsignedShiftRightEquals:
         return parse_assignment_expression(AssignmentOp::UnsignedRightShiftAssignment, move(lhs), min_precedence, associativity);
     case TokenType::ParenOpen:
@@ -1088,10 +1107,10 @@ NonnullRefPtr<Expression> Parser::parse_secondary_expression(NonnullRefPtr<Expre
         consume();
         if (!match_identifier_name())
             expected(""IdentifierName"");
-        return create_ast_node<MemberExpression>(move(lhs), create_ast_node<Identifier>(consume().value()));
+        return create_ast_node<MemberExpression>({ rule_start.position(), position() }, move(lhs), create_ast_node<Identifier>({ rule_start.position(), position() }, consume().value()));
     case TokenType::BracketOpen: {
         consume(TokenType::BracketOpen);
-        auto expression = create_ast_node<MemberExpression>(move(lhs), parse_expression(0), true);
+        auto expression = create_ast_node<MemberExpression>({ rule_start.position(), position() }, move(lhs), parse_expression(0), true);
         consume(TokenType::BracketClose);
         return expression;
     }
@@ -1101,27 +1120,27 @@ NonnullRefPtr<Expression> Parser::parse_secondary_expression(NonnullRefPtr<Expre
         if (!lhs->is_identifier() && !lhs->is_member_expression())
             syntax_error(String::formatted(""Left-hand side of postfix increment operator must be identifier or member expression, got {}"", lhs->class_name()));
         consume();
-        return create_ast_node<UpdateExpression>(UpdateOp::Increment, move(lhs));
+        return create_ast_node<UpdateExpression>({ rule_start.position(), position() }, UpdateOp::Increment, move(lhs));
     case TokenType::MinusMinus:
         // FIXME: Apparently for functions this should also not be enforced on a parser level,
         // other engines throw ReferenceError for foo()--
         if (!lhs->is_identifier() && !lhs->is_member_expression())
             syntax_error(String::formatted(""Left-hand side of postfix increment operator must be identifier or member expression, got {}"", lhs->class_name()));
         consume();
-        return create_ast_node<UpdateExpression>(UpdateOp::Decrement, move(lhs));
+        return create_ast_node<UpdateExpression>({ rule_start.position(), position() }, UpdateOp::Decrement, move(lhs));
     case TokenType::DoubleAmpersand:
         consume();
-        return create_ast_node<LogicalExpression>(LogicalOp::And, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<LogicalExpression>({ rule_start.position(), position() }, LogicalOp::And, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::DoubleAmpersandEquals:
         return parse_assignment_expression(AssignmentOp::AndAssignment, move(lhs), min_precedence, associativity);
     case TokenType::DoublePipe:
         consume();
-        return create_ast_node<LogicalExpression>(LogicalOp::Or, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<LogicalExpression>({ rule_start.position(), position() }, LogicalOp::Or, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::DoublePipeEquals:
         return parse_assignment_expression(AssignmentOp::OrAssignment, move(lhs), min_precedence, associativity);
     case TokenType::DoubleQuestionMark:
         consume();
-        return create_ast_node<LogicalExpression>(LogicalOp::NullishCoalescing, move(lhs), parse_expression(min_precedence, associativity));
+        return create_ast_node<LogicalExpression>({ rule_start.position(), position() }, LogicalOp::NullishCoalescing, move(lhs), parse_expression(min_precedence, associativity));
     case TokenType::DoubleQuestionMarkEquals:
         return parse_assignment_expression(AssignmentOp::NullishAssignment, move(lhs), min_precedence, associativity);
     case TokenType::QuestionMark:
@@ -1129,12 +1148,13 @@ NonnullRefPtr<Expression> Parser::parse_secondary_expression(NonnullRefPtr<Expre
     default:
         expected(""secondary expression"");
         consume();
-        return create_ast_node<ErrorExpression>();
+        return create_ast_node<ErrorExpression>({ rule_start.position(), position() });
     }
 }
 
 NonnullRefPtr<AssignmentExpression> Parser::parse_assignment_expression(AssignmentOp assignment_op, NonnullRefPtr<Expression> lhs, int min_precedence, Associativity associativity)
 {
+    auto rule_start = push_start();
     ASSERT(match(TokenType::Equals)
         || match(TokenType::PlusEquals)
         || match(TokenType::MinusEquals)
@@ -1161,11 +1181,12 @@ NonnullRefPtr<AssignmentExpression> Parser::parse_assignment_expression(Assignme
     } else if (m_parser_state.m_strict_mode && lhs->is_call_expression()) {
         syntax_error(""Cannot assign to function call"");
     }
-    return create_ast_node<AssignmentExpression>(assignment_op, move(lhs), parse_expression(min_precedence, associativity));
+    return create_ast_node<AssignmentExpression>({ rule_start.position(), position() }, assignment_op, move(lhs), parse_expression(min_precedence, associativity));
 }
 
 NonnullRefPtr<CallExpression> Parser::parse_call_expression(NonnullRefPtr<Expression> lhs)
 {
+    auto rule_start = push_start();
     if (!m_parser_state.m_allow_super_constructor_call && lhs->is_super_expression())
         syntax_error(""'super' keyword unexpected here"");
 
@@ -1187,11 +1208,12 @@ NonnullRefPtr<CallExpression> Parser::parse_call_expression(NonnullRefPtr<Expres
 
     consume(TokenType::ParenClose);
 
-    return create_ast_node<CallExpression>(move(lhs), move(arguments));
+    return create_ast_node<CallExpression>({ rule_start.position(), position() }, move(lhs), move(arguments));
 }
 
 NonnullRefPtr<NewExpression> Parser::parse_new_expression()
 {
+    auto rule_start = push_start();
     consume(TokenType::New);
 
     auto callee = parse_expression(g_operator_precedence.get(TokenType::New), Associativity::Right, { TokenType::ParenOpen });
@@ -1214,11 +1236,12 @@ NonnullRefPtr<NewExpression> Parser::parse_new_expression()
         consume(TokenType::ParenClose);
     }
 
-    return create_ast_node<NewExpression>(move(callee), move(arguments));
+    return create_ast_node<NewExpression>({ rule_start.position(), position() }, move(callee), move(arguments));
 }
 
 NonnullRefPtr<ReturnStatement> Parser::parse_return_statement()
 {
+    auto rule_start = push_start();
     if (!m_parser_state.m_in_function_context && !m_parser_state.m_in_arrow_function_context)
         syntax_error(""'return' not allowed outside of a function"");
 
@@ -1226,28 +1249,30 @@ NonnullRefPtr<ReturnStatement> Parser::parse_return_statement()
 
     // Automatic semicolon insertion: terminate statement when return is followed by newline
     if (m_parser_state.m_current_token.trivia_contains_line_terminator())
-        return create_ast_node<ReturnStatement>(nullptr);
+        return create_ast_node<ReturnStatement>({ rule_start.position(), position() }, nullptr);
 
     if (match_expression()) {
         auto expression = parse_expression(0);
         consume_or_insert_semicolon();
-        return create_ast_node<ReturnStatement>(move(expression));
+        return create_ast_node<ReturnStatement>({ rule_start.position(), position() }, move(expression));
     }
 
     consume_or_insert_semicolon();
-    return create_ast_node<ReturnStatement>(nullptr);
+    return create_ast_node<ReturnStatement>({ rule_start.position(), position() }, nullptr);
 }
 
 NonnullRefPtr<BlockStatement> Parser::parse_block_statement()
 {
+    auto rule_start = push_start();
     bool dummy = false;
     return parse_block_statement(dummy);
 }
 
 NonnullRefPtr<BlockStatement> Parser::parse_block_statement(bool& is_strict)
 {
+    auto rule_start = push_start();
     ScopePusher scope(*this, ScopePusher::Let);
-    auto block = create_ast_node<BlockStatement>();
+    auto block = create_ast_node<BlockStatement>({ rule_start.position(), position() });
     consume(TokenType::CurlyOpen);
 
     bool first = true;
@@ -1286,6 +1311,7 @@ NonnullRefPtr<BlockStatement> Parser::parse_block_statement(bool& is_strict)
 template<typename FunctionNodeType>
 NonnullRefPtr<FunctionNodeType> Parser::parse_function_node(u8 parse_options)
 {
+    auto rule_start = push_start();
     ASSERT(!(parse_options & FunctionNodeParseOptions::IsGetterFunction && parse_options & FunctionNodeParseOptions::IsSetterFunction));
 
     TemporaryChange super_property_access_rollback(m_parser_state.m_allow_super_property_lookup, !!(parse_options & FunctionNodeParseOptions::AllowSuperPropertyLookup));
@@ -1317,11 +1343,12 @@ NonnullRefPtr<FunctionNodeType> Parser::parse_function_node(u8 parse_options)
     auto body = parse_block_statement(is_strict);
     body->add_variables(m_parser_state.m_var_scopes.last());
     body->add_functions(m_parser_state.m_function_scopes.last());
-    return create_ast_node<FunctionNodeType>(name, move(body), move(parameters), function_length, NonnullRefPtrVector<VariableDeclaration>(), is_strict);
+    return create_ast_node<FunctionNodeType>({ rule_start.position(), position() }, name, move(body), move(parameters), function_length, NonnullRefPtrVector<VariableDeclaration>(), is_strict);
 }
 
 Vector<FunctionNode::Parameter> Parser::parse_function_parameters(int& function_length, u8 parse_options)
 {
+    auto rule_start = push_start();
     bool has_default_parameter = false;
     bool has_rest_parameter = false;
 
@@ -1383,6 +1410,7 @@ Vector<FunctionNode::Parameter> Parser::parse_function_parameters(int& function_
 
 NonnullRefPtr<VariableDeclaration> Parser::parse_variable_declaration(bool for_loop_variable_declaration)
 {
+    auto rule_start = push_start();
     DeclarationKind declaration_kind;
 
     switch (m_parser_state.m_current_token.type()) {
@@ -1410,7 +1438,7 @@ NonnullRefPtr<VariableDeclaration> Parser::parse_variable_declaration(bool for_l
         } else if (!for_loop_variable_declaration && declaration_kind == DeclarationKind::Const) {
             syntax_error(""Missing initializer in 'const' variable declaration"");
         }
-        declarations.append(create_ast_node<VariableDeclarator>(create_ast_node<Identifier>(move(id)), move(init)));
+        declarations.append(create_ast_node<VariableDeclarator>({ rule_start.position(), position() }, create_ast_node<Identifier>({ rule_start.position(), position() }, move(id)), move(init)));
         if (match(TokenType::Comma)) {
             consume();
             continue;
@@ -1420,7 +1448,7 @@ NonnullRefPtr<VariableDeclaration> Parser::parse_variable_declaration(bool for_l
     if (!for_loop_variable_declaration)
         consume_or_insert_semicolon();
 
-    auto declaration = create_ast_node<VariableDeclaration>(declaration_kind, move(declarations));
+    auto declaration = create_ast_node<VariableDeclaration>({ rule_start.position(), position() }, declaration_kind, move(declarations));
     if (declaration_kind == DeclarationKind::Var)
         m_parser_state.m_var_scopes.last().append(declaration);
     else
@@ -1430,21 +1458,23 @@ NonnullRefPtr<VariableDeclaration> Parser::parse_variable_declaration(bool for_l
 
 NonnullRefPtr<ThrowStatement> Parser::parse_throw_statement()
 {
+    auto rule_start = push_start();
     consume(TokenType::Throw);
 
     // Automatic semicolon insertion: terminate statement when throw is followed by newline
     if (m_parser_state.m_current_token.trivia_contains_line_terminator()) {
         syntax_error(""No line break is allowed between 'throw' and its expression"");
-        return create_ast_node<ThrowStatement>(create_ast_node<ErrorExpression>());
+        return create_ast_node<ThrowStatement>({ rule_start.position(), position() }, create_ast_node<ErrorExpression>({ rule_start.position(), position() }));
     }
 
     auto expression = parse_expression(0);
     consume_or_insert_semicolon();
-    return create_ast_node<ThrowStatement>(move(expression));
+    return create_ast_node<ThrowStatement>({ rule_start.position(), position() }, move(expression));
 }
 
 NonnullRefPtr<BreakStatement> Parser::parse_break_statement()
 {
+    auto rule_start = push_start();
     consume(TokenType::Break);
     FlyString target_label;
     if (match(TokenType::Semicolon)) {
@@ -1461,11 +1491,12 @@ NonnullRefPtr<BreakStatement> Parser::parse_break_statement()
     if (target_label.is_null() && !m_parser_state.m_in_break_context)
         syntax_error(""Unlabeled 'break' not allowed outside of a loop or switch statement"");
 
-    return create_ast_node<BreakStatement>(target_label);
+    return create_ast_node<BreakStatement>({ rule_start.position(), position() }, target_label);
 }
 
 NonnullRefPtr<ContinueStatement> Parser::parse_continue_statement()
 {
+    auto rule_start = push_start();
     if (!m_parser_state.m_in_continue_context)
         syntax_error(""'continue' not allow outside of a loop"");
 
@@ -1473,7 +1504,7 @@ NonnullRefPtr<ContinueStatement> Parser::parse_continue_statement()
     FlyString target_label;
     if (match(TokenType::Semicolon)) {
         consume();
-        return create_ast_node<ContinueStatement>(target_label);
+        return create_ast_node<ContinueStatement>({ rule_start.position(), position() }, target_label);
     }
     if (match(TokenType::Identifier) && !m_parser_state.m_current_token.trivia_contains_line_terminator()) {
         target_label = consume().value();
@@ -1481,20 +1512,22 @@ NonnullRefPtr<ContinueStatement> Parser::parse_continue_statement()
             syntax_error(String::formatted(""Label '{}' not found"", target_label));
     }
     consume_or_insert_semicolon();
-    return create_ast_node<ContinueStatement>(target_label);
+    return create_ast_node<ContinueStatement>({ rule_start.position(), position() }, target_label);
 }
 
 NonnullRefPtr<ConditionalExpression> Parser::parse_conditional_expression(NonnullRefPtr<Expression> test)
 {
+    auto rule_start = push_start();
     consume(TokenType::QuestionMark);
     auto consequent = parse_expression(2);
     consume(TokenType::Colon);
     auto alternate = parse_expression(2);
-    return create_ast_node<ConditionalExpression>(move(test), move(consequent), move(alternate));
+    return create_ast_node<ConditionalExpression>({ rule_start.position(), position() }, move(test), move(consequent), move(alternate));
 }
 
 NonnullRefPtr<TryStatement> Parser::parse_try_statement()
 {
+    auto rule_start = push_start();
     consume(TokenType::Try);
 
     auto block = parse_block_statement();
@@ -1512,11 +1545,12 @@ NonnullRefPtr<TryStatement> Parser::parse_try_statement()
     if (!handler && !finalizer)
         syntax_error(""try statement must have a 'catch' or 'finally' clause"");
 
-    return create_ast_node<TryStatement>(move(block), move(handler), move(finalizer));
+    return create_ast_node<TryStatement>({ rule_start.position(), position() }, move(block), move(handler), move(finalizer));
 }
 
 NonnullRefPtr<DoWhileStatement> Parser::parse_do_while_statement()
 {
+    auto rule_start = push_start();
     consume(TokenType::Do);
 
     auto body = [&]() -> NonnullRefPtr<Statement> {
@@ -1536,11 +1570,12 @@ NonnullRefPtr<DoWhileStatement> Parser::parse_do_while_statement()
     if (match(TokenType::Semicolon))
         consume();
 
-    return create_ast_node<DoWhileStatement>(move(test), move(body));
+    return create_ast_node<DoWhileStatement>({ rule_start.position(), position() }, move(test), move(body));
 }
 
 NonnullRefPtr<WhileStatement> Parser::parse_while_statement()
 {
+    auto rule_start = push_start();
     consume(TokenType::While);
     consume(TokenType::ParenOpen);
 
@@ -1552,11 +1587,12 @@ NonnullRefPtr<WhileStatement> Parser::parse_while_statement()
     TemporaryChange continue_change(m_parser_state.m_in_continue_context, true);
     auto body = parse_statement();
 
-    return create_ast_node<WhileStatement>(move(test), move(body));
+    return create_ast_node<WhileStatement>({ rule_start.position(), position() }, move(test), move(body));
 }
 
 NonnullRefPtr<SwitchStatement> Parser::parse_switch_statement()
 {
+    auto rule_start = push_start();
     consume(TokenType::Switch);
 
     consume(TokenType::ParenOpen);
@@ -1579,11 +1615,12 @@ NonnullRefPtr<SwitchStatement> Parser::parse_switch_statement()
 
     consume(TokenType::CurlyClose);
 
-    return create_ast_node<SwitchStatement>(move(determinant), move(cases));
+    return create_ast_node<SwitchStatement>({ rule_start.position(), position() }, move(determinant), move(cases));
 }
 
 NonnullRefPtr<WithStatement> Parser::parse_with_statement()
 {
+    auto rule_start = push_start();
     consume(TokenType::With);
     consume(TokenType::ParenOpen);
 
@@ -1592,11 +1629,12 @@ NonnullRefPtr<WithStatement> Parser::parse_with_statement()
     consume(TokenType::ParenClose);
 
     auto body = parse_statement();
-    return create_ast_node<WithStatement>(move(object), move(body));
+    return create_ast_node<WithStatement>({ rule_start.position(), position() }, move(object), move(body));
 }
 
 NonnullRefPtr<SwitchCase> Parser::parse_switch_case()
 {
+    auto rule_start = push_start();
     RefPtr<Expression> test;
 
     if (consume().type() == TokenType::Case) {
@@ -1616,11 +1654,12 @@ NonnullRefPtr<SwitchCase> Parser::parse_switch_case()
             break;
     }
 
-    return create_ast_node<SwitchCase>(move(test), move(consequent));
+    return create_ast_node<SwitchCase>({ rule_start.position(), position() }, move(test), move(consequent));
 }
 
 NonnullRefPtr<CatchClause> Parser::parse_catch_clause()
 {
+    auto rule_start = push_start();
     consume(TokenType::Catch);
 
     String parameter;
@@ -1631,18 +1670,19 @@ NonnullRefPtr<CatchClause> Parser::parse_catch_clause()
     }
 
     auto body = parse_block_statement();
-    return create_ast_node<CatchClause>(parameter, move(body));
+    return create_ast_node<CatchClause>({ rule_start.position(), position() }, parameter, move(body));
 }
 
 NonnullRefPtr<IfStatement> Parser::parse_if_statement()
 {
+    auto rule_start = push_start();
     auto parse_function_declaration_as_block_statement = [&] {
         // https://tc39.es/ecma262/#sec-functiondeclarations-in-ifstatement-statement-clauses
         // Code matching this production is processed as if each matching occurrence of
         // FunctionDeclaration[?Yield, ?Await, ~Default] was the sole StatementListItem
         // of a BlockStatement occupying that position in the source code.
         ScopePusher scope(*this, ScopePusher::Let);
-        auto block = create_ast_node<BlockStatement>();
+        auto block = create_ast_node<BlockStatement>({ rule_start.position(), position() });
         block->append(parse_declaration());
         block->add_functions(m_parser_state.m_function_scopes.last());
         return block;
@@ -1667,11 +1707,12 @@ NonnullRefPtr<IfStatement> Parser::parse_if_statement()
         else
             alternate = parse_statement();
     }
-    return create_ast_node<IfStatement>(move(predicate), move(*consequent), move(alternate));
+    return create_ast_node<IfStatement>({ rule_start.position(), position() }, move(predicate), move(*consequent), move(alternate));
 }
 
 NonnullRefPtr<Statement> Parser::parse_for_statement()
 {
+    auto rule_start = push_start();
     auto match_for_in_of = [&]() {
         return match(TokenType::In) || (match(TokenType::Identifier) && m_parser_state.m_current_token.value() == ""of"");
     };
@@ -1727,11 +1768,12 @@ NonnullRefPtr<Statement> Parser::parse_for_statement()
         m_parser_state.m_let_scopes.take_last();
     }
 
-    return create_ast_node<ForStatement>(move(init), move(test), move(update), move(body));
+    return create_ast_node<ForStatement>({ rule_start.position(), position() }, move(init), move(test), move(update), move(body));
 }
 
 NonnullRefPtr<Statement> Parser::parse_for_in_of_statement(NonnullRefPtr<ASTNode> lhs)
 {
+    auto rule_start = push_start();
     if (lhs->is_variable_declaration()) {
         auto declarations = static_cast<VariableDeclaration&>(*lhs).declarations();
         if (declarations.size() > 1)
@@ -1747,15 +1789,16 @@ NonnullRefPtr<Statement> Parser::parse_for_in_of_statement(NonnullRefPtr<ASTNode
     TemporaryChange continue_change(m_parser_state.m_in_continue_context, true);
     auto body = parse_statement();
     if (in_or_of.type() == TokenType::In)
-        return create_ast_node<ForInStatement>(move(lhs), move(rhs), move(body));
-    return create_ast_node<ForOfStatement>(move(lhs), move(rhs), move(body));
+        return create_ast_node<ForInStatement>({ rule_start.position(), position() }, move(lhs), move(rhs), move(body));
+    return create_ast_node<ForOfStatement>({ rule_start.position(), position() }, move(lhs), move(rhs), move(body));
 }
 
 NonnullRefPtr<DebuggerStatement> Parser::parse_debugger_statement()
 {
+    auto rule_start = push_start();
     consume(TokenType::Debugger);
     consume_or_insert_semicolon();
-    return create_ast_node<DebuggerStatement>();
+    return create_ast_node<DebuggerStatement>({ rule_start.position(), position() });
 }
 
 bool Parser::match(TokenType type) const
@@ -1969,7 +2012,7 @@ void Parser::expected(const char* what)
     syntax_error(message);
 }
 
-Parser::Position Parser::position() const
+Position Parser::position() const
 {
     return {
         m_parser_state.m_current_token.line_number(),
diff --git a/Libraries/LibJS/Parser.h b/Libraries/LibJS/Parser.h
index 6b7a1554afd6..0c348924cc64 100644
--- a/Libraries/LibJS/Parser.h
+++ b/Libraries/LibJS/Parser.h
@@ -31,6 +31,7 @@
 #include <AK/StringBuilder.h>
 #include <LibJS/AST.h>
 #include <LibJS/Lexer.h>
+#include <LibJS/SourceRange.h>
 #include <stdio.h>
 
 namespace JS {
@@ -102,11 +103,6 @@ class Parser {
     RefPtr<Statement> try_parse_labelled_statement();
     RefPtr<MetaProperty> try_parse_new_target_expression();
 
-    struct Position {
-        size_t line;
-        size_t column;
-    };
-
     struct Error {
         String message;
         Optional<Position> position;
@@ -175,6 +171,30 @@ class Parser {
     void load_state();
     Position position() const;
 
+    struct RulePosition {
+        RulePosition(Parser& parser, Position position)
+            : m_parser(parser)
+            , m_position(position)
+        {
+            m_parser.m_parser_state.m_rule_starts.append(position);
+        }
+
+        ~RulePosition()
+        {
+            auto last = m_parser.m_parser_state.m_rule_starts.take_last();
+            ASSERT(last.line == m_position.line);
+            ASSERT(last.column == m_position.column);
+        }
+
+        const Position& position() const { return m_position; }
+
+    private:
+        Parser& m_parser;
+        Position m_position;
+    };
+
+    [[nodiscard]] RulePosition push_start() { return { *this, position() }; }
+
     struct ParserState {
         Lexer m_lexer;
         Token m_current_token;
@@ -182,6 +202,7 @@ class Parser {
         Vector<NonnullRefPtrVector<VariableDeclaration>> m_var_scopes;
         Vector<NonnullRefPtrVector<VariableDeclaration>> m_let_scopes;
         Vector<NonnullRefPtrVector<FunctionDeclaration>> m_function_scopes;
+        Vector<Position> m_rule_starts;
         HashTable<StringView> m_labels_in_scope;
         bool m_strict_mode { false };
         bool m_allow_super_property_lookup { false };
diff --git a/Libraries/LibJS/Runtime/Exception.cpp b/Libraries/LibJS/Runtime/Exception.cpp
index 8bcf005c3a5b..08c6f6bde972 100644
--- a/Libraries/LibJS/Runtime/Exception.cpp
+++ b/Libraries/LibJS/Runtime/Exception.cpp
@@ -25,6 +25,7 @@
  */
 
 #include <AK/String.h>
+#include <LibJS/AST.h>
 #include <LibJS/Runtime/Exception.h>
 #include <LibJS/Runtime/VM.h>
 
@@ -40,6 +41,13 @@ Exception::Exception(Value value)
             function_name = ""<anonymous>"";
         m_trace.append(function_name);
     }
+
+    auto& node_stack = vm().node_stack();
+    for (ssize_t i = node_stack.size() - 1; i >= 0; --i) {
+        auto* node = node_stack[i];
+        ASSERT(node);
+        m_source_ranges.append(node->source_range());
+    }
 }
 
 Exception::~Exception()
diff --git a/Libraries/LibJS/Runtime/Exception.h b/Libraries/LibJS/Runtime/Exception.h
index 630cce9ef6a4..2d26447c89ea 100644
--- a/Libraries/LibJS/Runtime/Exception.h
+++ b/Libraries/LibJS/Runtime/Exception.h
@@ -29,6 +29,7 @@
 #include <AK/Vector.h>
 #include <LibJS/Runtime/Cell.h>
 #include <LibJS/Runtime/Value.h>
+#include <LibJS/SourceRange.h>
 
 namespace JS {
 
@@ -39,6 +40,7 @@ class Exception : public Cell {
 
     Value value() const { return m_value; }
     const Vector<String>& trace() const { return m_trace; }
+    const Vector<SourceRange>& source_ranges() const { return m_source_ranges; }
 
 private:
     virtual const char* class_name() const override { return ""Exception""; }
@@ -46,6 +48,7 @@ class Exception : public Cell {
 
     Value m_value;
     Vector<String> m_trace;
+    Vector<SourceRange> m_source_ranges;
 };
 
 }
diff --git a/Libraries/LibJS/Runtime/VM.h b/Libraries/LibJS/Runtime/VM.h
index 4021c217dc36..320ea53405b1 100644
--- a/Libraries/LibJS/Runtime/VM.h
+++ b/Libraries/LibJS/Runtime/VM.h
@@ -126,10 +126,14 @@ class VM : public RefCounted<VM> {
 
     void pop_call_frame() { m_call_stack.take_last(); }
 
+    void push_ast_node(const ASTNode& node) { m_ast_nodes.append(&node); }
+    void pop_ast_node() { m_ast_nodes.take_last(); }
+
     CallFrame& call_frame() { return *m_call_stack.last(); }
     const CallFrame& call_frame() const { return *m_call_stack.last(); }
     const Vector<CallFrame*>& call_stack() const { return m_call_stack; }
     Vector<CallFrame*>& call_stack() { return m_call_stack; }
+    const Vector<const ASTNode*>& node_stack() const { return m_ast_nodes; }
 
     const ScopeObject* current_scope() const { return call_frame().scope; }
     ScopeObject* current_scope() { return call_frame().scope; }
@@ -249,6 +253,7 @@ class VM : public RefCounted<VM> {
     Vector<Interpreter*> m_interpreters;
 
     Vector<CallFrame*> m_call_stack;
+    Vector<const ASTNode*> m_ast_nodes;
 
     Value m_last_value;
     ScopeType m_unwind_until { ScopeType::None };
diff --git a/Libraries/LibJS/SourceRange.h b/Libraries/LibJS/SourceRange.h
new file mode 100644
index 000000000000..f0359ab84c9f
--- /dev/null
+++ b/Libraries/LibJS/SourceRange.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2020, the SerenityOS developers.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <AK/Types.h>
+
+namespace JS {
+
+struct Position {
+    size_t line { 0 };
+    size_t column { 0 };
+};
+
+struct SourceRange {
+    Position start;
+    Position end;
+};
+
+}"
6ca03b915e610b2216bef11372d0af674c8b49b4,2022-03-27 22:24:56,Linus Groh,kernel: Support all Intel-defined CPUID feature flags for EAX=1,False,Support all Intel-defined CPUID feature flags for EAX=1,kernel,"diff --git a/Kernel/Arch/x86/CPUID.h b/Kernel/Arch/x86/CPUID.h
index d3e6f003943e..f510591479c7 100644
--- a/Kernel/Arch/x86/CPUID.h
+++ b/Kernel/Arch/x86/CPUID.h
@@ -38,33 +38,88 @@ class CPUID {
 };
 
 AK_MAKE_ARBITRARY_SIZED_ENUM(CPUFeature, u128,
-    NX = CPUFeature(1u) << 0u,
-    PAE = CPUFeature(1u) << 1u,
-    PGE = CPUFeature(1u) << 2u,
-    RDRAND = CPUFeature(1u) << 3u,
-    RDSEED = CPUFeature(1u) << 4u,
-    SMAP = CPUFeature(1u) << 5u,
-    SMEP = CPUFeature(1u) << 6u,
-    SSE = CPUFeature(1u) << 7u,
-    TSC = CPUFeature(1u) << 8u,
-    RDTSCP = CPUFeature(1u) << 9u,
-    CONSTANT_TSC = CPUFeature(1u) << 10u,
-    NONSTOP_TSC = CPUFeature(1u) << 11u,
-    UMIP = CPUFeature(1u) << 12u,
-    SEP = CPUFeature(1u) << 13u,
-    SYSCALL = CPUFeature(1u) << 14u,
-    MMX = CPUFeature(1u) << 15u,
-    SSE2 = CPUFeature(1u) << 16u,
-    SSE3 = CPUFeature(1u) << 17u,
-    SSSE3 = CPUFeature(1u) << 18u,
-    SSE4_1 = CPUFeature(1u) << 19u,
-    SSE4_2 = CPUFeature(1u) << 20u,
-    XSAVE = CPUFeature(1u) << 21u,
-    AVX = CPUFeature(1u) << 22u,
-    FXSR = CPUFeature(1u) << 23u,
-    LM = CPUFeature(1u) << 24u,
-    HYPERVISOR = CPUFeature(1u) << 25u,
-    PAT = CPUFeature(1u) << 26u,
-    __End = CPUFeature(1u) << 27u);
+    /* EAX=1, ECX                                  */ //
+    SSE3 = CPUFeature(1u) << 0u,                      // Streaming SIMD Extensions 3
+    PCLMULQDQ = CPUFeature(1u) << 1u,                 // PCLMULDQ Instruction
+    DTES64 = CPUFeature(1u) << 2u,                    // 64-Bit Debug Store
+    MONITOR = CPUFeature(1u) << 3u,                   // MONITOR/MWAIT Instructions
+    DS_CPL = CPUFeature(1u) << 4u,                    // CPL Qualified Debug Store
+    VMX = CPUFeature(1u) << 5u,                       // Virtual Machine Extensions
+    SMX = CPUFeature(1u) << 6u,                       // Safer Mode Extensions
+    EST = CPUFeature(1u) << 7u,                       // Enhanced Intel SpeedStep® Technology
+    TM2 = CPUFeature(1u) << 8u,                       // Thermal Monitor 2
+    SSSE3 = CPUFeature(1u) << 9u,                     // Supplemental Streaming SIMD Extensions 3
+    CNXT_ID = CPUFeature(1u) << 10u,                  // L1 Context ID
+    SDBG = CPUFeature(1u) << 11u,                     // Silicon Debug (IA32_DEBUG_INTERFACE MSR)
+    FMA = CPUFeature(1u) << 12u,                      // Fused Multiply Add
+    CX16 = CPUFeature(1u) << 13u,                     // CMPXCHG16B Instruction
+    XTPR = CPUFeature(1u) << 14u,                     // xTPR Update Control
+    PDCM = CPUFeature(1u) << 15u,                     // Perfmon and Debug Capability (IA32_PERF_CAPABILITIES MSR)
+    /* ECX Bit 16 */                                  // Reserved
+    PCID = CPUFeature(1u) << 17u,                     // Process Context Identifiers
+    DCA = CPUFeature(1u) << 18u,                      // Direct Cache Access
+    SSE4_1 = CPUFeature(1u) << 19u,                   // Streaming SIMD Extensions 4.1
+    SSE4_2 = CPUFeature(1u) << 20u,                   // Streaming SIMD Extensions 4.2
+    X2APIC = CPUFeature(1u) << 21u,                   // Extended xAPIC Support
+    MOVBE = CPUFeature(1u) << 22u,                    // MOVBE Instruction
+    POPCNT = CPUFeature(1u) << 23u,                   // POPCNT Instruction
+    TSC_DEADLINE = CPUFeature(1u) << 24u,             // Time Stamp Counter Deadline
+    AES = CPUFeature(1u) << 25u,                      // AES Instruction Extensions
+    XSAVE = CPUFeature(1u) << 26u,                    // XSAVE/XSTOR States
+    OSXSAVE = CPUFeature(1u) << 27u,                  // OS-Enabled Extended State Management
+    AVX = CPUFeature(1u) << 28u,                      // Advanced Vector Extensions
+    F16C = CPUFeature(1u) << 29u,                     // 16-bit floating-point conversion instructions
+    RDRAND = CPUFeature(1u) << 30u,                   // RDRAND Instruction
+    HYPERVISOR = CPUFeature(1u) << 31u,               // Hypervisor present (always zero on physical CPUs)
+    /* EAX=1, EDX */                                  //
+    FPU = CPUFeature(1u) << 32u,                      // Floating-point Unit On-Chip
+    VME = CPUFeature(1u) << 33u,                      // Virtual Mode Extension
+    DE = CPUFeature(1u) << 34u,                       // Debugging Extension
+    PSE = CPUFeature(1u) << 35u,                      // Page Size Extension
+    TSC = CPUFeature(1u) << 36u,                      // Time Stamp Counter
+    MSR = CPUFeature(1u) << 37u,                      // Model Specific Registers
+    PAE = CPUFeature(1u) << 38u,                      // Physical Address Extension
+    MCE = CPUFeature(1u) << 39u,                      // Machine-Check Exception
+    CX8 = CPUFeature(1u) << 40u,                      // CMPXCHG8 Instruction
+    APIC = CPUFeature(1u) << 41u,                     // On-chip APIC Hardware
+    /* EDX Bit 10 */                                  // Reserved
+    SEP = CPUFeature(1u) << 43u,                      // Fast System Call
+    MTRR = CPUFeature(1u) << 44u,                     // Memory Type Range Registers
+    PGE = CPUFeature(1u) << 45u,                      // Page Global Enable
+    MCA = CPUFeature(1u) << 46u,                      // Machine-Check Architecture
+    CMOV = CPUFeature(1u) << 47u,                     // Conditional Move Instruction
+    PAT = CPUFeature(1u) << 48u,                      // Page Attribute Table
+    PSE36 = CPUFeature(1u) << 49u,                    // 36-bit Page Size Extension
+    PSN = CPUFeature(1u) << 50u,                      // Processor serial number is present and enabled
+    CLFLUSH = CPUFeature(1u) << 51u,                  // CLFLUSH Instruction
+    /* EDX Bit 20 */                                  // Reserved
+    DS = CPUFeature(1u) << 53u,                       // CLFLUSH Instruction
+    ACPI = CPUFeature(1u) << 54u,                     // CLFLUSH Instruction
+    MMX = CPUFeature(1u) << 55u,                      // CLFLUSH Instruction
+    FXSR = CPUFeature(1u) << 56u,                     // CLFLUSH Instruction
+    SSE = CPUFeature(1u) << 57u,                      // Streaming SIMD Extensions
+    SSE2 = CPUFeature(1u) << 58u,                     // Streaming SIMD Extensions 2
+    SS = CPUFeature(1u) << 59u,                       // Self-Snoop
+    HTT = CPUFeature(1u) << 60u,                      // Multi-Threading
+    TM = CPUFeature(1u) << 61u,                       // Thermal Monitor
+    IA64 = CPUFeature(1u) << 62u,                     // IA64 processor emulating x86
+    PBE = CPUFeature(1u) << 63u,                      // Pending Break Enable
+    /* EAX=7, EBX */                                  //
+    SMEP = CPUFeature(1u) << 64u,                     // Supervisor Mode Execution Protection
+    RDSEED = CPUFeature(1u) << 65u,                   // RDSEED Instruction
+    SMAP = CPUFeature(1u) << 66u,                     // Supervisor Mode Access Prevention
+    /* EAX=7, ECX */                                  //
+    UMIP = CPUFeature(1u) << 67u,                     // User-Mode Instruction Prevention
+    /* EAX=80000001h, EDX */                          //
+    SYSCALL = CPUFeature(1u) << 68u,                  // SYSCALL/SYSRET Instructions
+    NX = CPUFeature(1u) << 69u,                       // NX bit
+    RDTSCP = CPUFeature(1u) << 70u,                   // RDTSCP Instruction
+    LM = CPUFeature(1u) << 71u,                       // Long Mode
+    /* EAX=80000007h, EDX */                          //
+    CONSTANT_TSC = CPUFeature(1u) << 72u,             // Invariant TSC
+    NONSTOP_TSC = CPUFeature(1u) << 73u,              // Invariant TSC
+    __End = CPUFeature(1u) << 127u);
+
+StringView cpu_feature_to_string_view(CPUFeature::Type const&);
 
 }
diff --git a/Kernel/Arch/x86/common/CPUID.cpp b/Kernel/Arch/x86/common/CPUID.cpp
new file mode 100644
index 000000000000..51ef21eeb613
--- /dev/null
+++ b/Kernel/Arch/x86/common/CPUID.cpp
@@ -0,0 +1,160 @@
+/*
+ * Copyright (c) 2022, Linus Groh <linusg@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <Kernel/Arch/x86/CPUID.h>
+
+namespace Kernel {
+
+StringView cpu_feature_to_string_view(CPUFeature::Type const& feature)
+{
+    if (feature == CPUFeature::SSE3)
+        return ""sse3""sv;
+    if (feature == CPUFeature::PCLMULQDQ)
+        return ""pclmulqdq""sv;
+    if (feature == CPUFeature::DTES64)
+        return ""dtes64""sv;
+    if (feature == CPUFeature::MONITOR)
+        return ""monitor""sv;
+    if (feature == CPUFeature::DS_CPL)
+        return ""ds_cpl""sv;
+    if (feature == CPUFeature::VMX)
+        return ""vmx""sv;
+    if (feature == CPUFeature::SMX)
+        return ""smx""sv;
+    if (feature == CPUFeature::EST)
+        return ""est""sv;
+    if (feature == CPUFeature::TM2)
+        return ""tm2""sv;
+    if (feature == CPUFeature::SSSE3)
+        return ""ssse3""sv;
+    // NOTE: This is called cid on Linux, but CNXT_ID in the Intel manual.
+    if (feature == CPUFeature::CNXT_ID)
+        return ""cnxt_id""sv;
+    if (feature == CPUFeature::SDBG)
+        return ""sdbg""sv;
+    if (feature == CPUFeature::FMA)
+        return ""fma""sv;
+    if (feature == CPUFeature::CX16)
+        return ""cx16""sv;
+    if (feature == CPUFeature::XTPR)
+        return ""xtpr""sv;
+    if (feature == CPUFeature::PDCM)
+        return ""pdcm""sv;
+    if (feature == CPUFeature::PCID)
+        return ""pcid""sv;
+    if (feature == CPUFeature::DCA)
+        return ""dca""sv;
+    if (feature == CPUFeature::SSE4_1)
+        return ""sse4_1""sv;
+    if (feature == CPUFeature::SSE4_2)
+        return ""sse4_2""sv;
+    if (feature == CPUFeature::X2APIC)
+        return ""x2apic""sv;
+    if (feature == CPUFeature::MOVBE)
+        return ""movbe""sv;
+    if (feature == CPUFeature::POPCNT)
+        return ""popcnt""sv;
+    // NOTE: This is called tsc_deadline_timer on Linux, but TSC_DEADLINE in the Intel manual.
+    if (feature == CPUFeature::TSC_DEADLINE)
+        return ""tsc_deadline""sv;
+    if (feature == CPUFeature::AES)
+        return ""aes""sv;
+    if (feature == CPUFeature::XSAVE)
+        return ""xsave""sv;
+    if (feature == CPUFeature::OSXSAVE)
+        return ""osxsave""sv;
+    if (feature == CPUFeature::AVX)
+        return ""avx""sv;
+    if (feature == CPUFeature::F16C)
+        return ""f16c""sv;
+    if (feature == CPUFeature::RDRAND)
+        return ""rdrand""sv;
+    if (feature == CPUFeature::HYPERVISOR)
+        return ""hypervisor""sv;
+    if (feature == CPUFeature::FPU)
+        return ""fpu""sv;
+    if (feature == CPUFeature::VME)
+        return ""vme""sv;
+    if (feature == CPUFeature::DE)
+        return ""de""sv;
+    if (feature == CPUFeature::PSE)
+        return ""pse""sv;
+    if (feature == CPUFeature::TSC)
+        return ""tsc""sv;
+    if (feature == CPUFeature::MSR)
+        return ""msr""sv;
+    if (feature == CPUFeature::PAE)
+        return ""pae""sv;
+    if (feature == CPUFeature::MCE)
+        return ""mce""sv;
+    if (feature == CPUFeature::CX8)
+        return ""cx8""sv;
+    if (feature == CPUFeature::APIC)
+        return ""apic""sv;
+    if (feature == CPUFeature::SEP)
+        return ""sep""sv;
+    if (feature == CPUFeature::MTRR)
+        return ""mtrr""sv;
+    if (feature == CPUFeature::PGE)
+        return ""pge""sv;
+    if (feature == CPUFeature::MCA)
+        return ""mca""sv;
+    if (feature == CPUFeature::CMOV)
+        return ""cmov""sv;
+    if (feature == CPUFeature::PAT)
+        return ""pat""sv;
+    if (feature == CPUFeature::PSE36)
+        return ""pse36""sv;
+    if (feature == CPUFeature::PSN)
+        return ""psn""sv;
+    if (feature == CPUFeature::CLFLUSH)
+        return ""clflush""sv;
+    if (feature == CPUFeature::DS)
+        return ""ds""sv;
+    if (feature == CPUFeature::ACPI)
+        return ""acpi""sv;
+    if (feature == CPUFeature::MMX)
+        return ""mmx""sv;
+    if (feature == CPUFeature::FXSR)
+        return ""fxsr""sv;
+    if (feature == CPUFeature::SSE)
+        return ""sse""sv;
+    if (feature == CPUFeature::SSE2)
+        return ""sse2""sv;
+    if (feature == CPUFeature::SS)
+        return ""ss""sv;
+    if (feature == CPUFeature::HTT)
+        return ""htt""sv;
+    if (feature == CPUFeature::TM)
+        return ""tm""sv;
+    if (feature == CPUFeature::IA64)
+        return ""ia64""sv;
+    if (feature == CPUFeature::PBE)
+        return ""pbe""sv;
+    if (feature == CPUFeature::SMEP)
+        return ""smep""sv;
+    if (feature == CPUFeature::RDSEED)
+        return ""rdseed""sv;
+    if (feature == CPUFeature::SMAP)
+        return ""smap""sv;
+    if (feature == CPUFeature::UMIP)
+        return ""umip""sv;
+    if (feature == CPUFeature::SYSCALL)
+        return ""syscall""sv;
+    if (feature == CPUFeature::NX)
+        return ""nx""sv;
+    if (feature == CPUFeature::RDTSCP)
+        return ""rdtscp""sv;
+    if (feature == CPUFeature::LM)
+        return ""lm""sv;
+    if (feature == CPUFeature::CONSTANT_TSC)
+        return ""constant_tsc""sv;
+    if (feature == CPUFeature::NONSTOP_TSC)
+        return ""nonstop_tsc""sv;
+    VERIFY_NOT_REACHED();
+}
+
+}
diff --git a/Kernel/Arch/x86/common/Processor.cpp b/Kernel/Arch/x86/common/Processor.cpp
index 3c1be17643b5..18186af8662d 100644
--- a/Kernel/Arch/x86/common/Processor.cpp
+++ b/Kernel/Arch/x86/common/Processor.cpp
@@ -89,31 +89,109 @@ UNMAP_AFTER_INIT void Processor::cpu_detect()
 
     if (processor_info.ecx() & (1 << 0))
         m_features |= CPUFeature::SSE3;
+    if (processor_info.ecx() & (1 << 1))
+        m_features |= CPUFeature::PCLMULQDQ;
+    if (processor_info.ecx() & (1 << 2))
+        m_features |= CPUFeature::DTES64;
+    if (processor_info.ecx() & (1 << 3))
+        m_features |= CPUFeature::MONITOR;
+    if (processor_info.ecx() & (1 << 4))
+        m_features |= CPUFeature::DS_CPL;
+    if (processor_info.ecx() & (1 << 5))
+        m_features |= CPUFeature::VMX;
+    if (processor_info.ecx() & (1 << 6))
+        m_features |= CPUFeature::SMX;
+    if (processor_info.ecx() & (1 << 7))
+        m_features |= CPUFeature::EST;
+    if (processor_info.ecx() & (1 << 8))
+        m_features |= CPUFeature::TM2;
     if (processor_info.ecx() & (1 << 9))
         m_features |= CPUFeature::SSSE3;
+    if (processor_info.ecx() & (1 << 10))
+        m_features |= CPUFeature::CNXT_ID;
+    if (processor_info.ecx() & (1 << 11))
+        m_features |= CPUFeature::SDBG;
+    if (processor_info.ecx() & (1 << 12))
+        m_features |= CPUFeature::FMA;
+    if (processor_info.ecx() & (1 << 13))
+        m_features |= CPUFeature::CX16;
+    if (processor_info.ecx() & (1 << 14))
+        m_features |= CPUFeature::XTPR;
+    if (processor_info.ecx() & (1 << 15))
+        m_features |= CPUFeature::PDCM;
+    if (processor_info.ecx() & (1 << 17))
+        m_features |= CPUFeature::PCID;
+    if (processor_info.ecx() & (1 << 18))
+        m_features |= CPUFeature::DCA;
     if (processor_info.ecx() & (1 << 19))
         m_features |= CPUFeature::SSE4_1;
     if (processor_info.ecx() & (1 << 20))
         m_features |= CPUFeature::SSE4_2;
+    if (processor_info.ecx() & (1 << 21))
+        m_features |= CPUFeature::X2APIC;
+    if (processor_info.ecx() & (1 << 22))
+        m_features |= CPUFeature::MOVBE;
+    if (processor_info.ecx() & (1 << 23))
+        m_features |= CPUFeature::POPCNT;
+    if (processor_info.ecx() & (1 << 24))
+        m_features |= CPUFeature::TSC_DEADLINE;
+    if (processor_info.ecx() & (1 << 25))
+        m_features |= CPUFeature::AES;
     if (processor_info.ecx() & (1 << 26))
         m_features |= CPUFeature::XSAVE;
+    if (processor_info.ecx() & (1 << 27))
+        m_features |= CPUFeature::OSXSAVE;
     if (processor_info.ecx() & (1 << 28))
         m_features |= CPUFeature::AVX;
+    if (processor_info.ecx() & (1 << 29))
+        m_features |= CPUFeature::F16C;
     if (processor_info.ecx() & (1 << 30))
         m_features |= CPUFeature::RDRAND;
     if (processor_info.ecx() & (1 << 31))
         m_features |= CPUFeature::HYPERVISOR;
 
+    if (processor_info.edx() & (1 << 0))
+        m_features |= CPUFeature::FPU;
+    if (processor_info.edx() & (1 << 1))
+        m_features |= CPUFeature::VME;
+    if (processor_info.edx() & (1 << 2))
+        m_features |= CPUFeature::DE;
+    if (processor_info.edx() & (1 << 3))
+        m_features |= CPUFeature::PSE;
     if (processor_info.edx() & (1 << 4))
         m_features |= CPUFeature::TSC;
+    if (processor_info.edx() & (1 << 5))
+        m_features |= CPUFeature::MSR;
     if (processor_info.edx() & (1 << 6))
         m_features |= CPUFeature::PAE;
-    if (processor_info.edx() & (1 << 13))
-        m_features |= CPUFeature::PGE;
+    if (processor_info.edx() & (1 << 7))
+        m_features |= CPUFeature::MCE;
+    if (processor_info.edx() & (1 << 8))
+        m_features |= CPUFeature::CX8;
+    if (processor_info.edx() & (1 << 9))
+        m_features |= CPUFeature::APIC;
     if (processor_info.edx() & (1 << 11))
         handle_edx_bit_11_feature();
+    if (processor_info.edx() & (1 << 12))
+        m_features |= CPUFeature::MTRR;
+    if (processor_info.edx() & (1 << 13))
+        m_features |= CPUFeature::PGE;
+    if (processor_info.edx() & (1 << 14))
+        m_features |= CPUFeature::MCA;
+    if (processor_info.edx() & (1 << 15))
+        m_features |= CPUFeature::CMOV;
     if (processor_info.edx() & (1 << 16))
         m_features |= CPUFeature::PAT;
+    if (processor_info.edx() & (1 << 17))
+        m_features |= CPUFeature::PSE36;
+    if (processor_info.edx() & (1 << 18))
+        m_features |= CPUFeature::PSN;
+    if (processor_info.edx() & (1 << 19))
+        m_features |= CPUFeature::CLFLUSH;
+    if (processor_info.edx() & (1 << 21))
+        m_features |= CPUFeature::DS;
+    if (processor_info.edx() & (1 << 22))
+        m_features |= CPUFeature::ACPI;
     if (processor_info.edx() & (1 << 23))
         m_features |= CPUFeature::MMX;
     if (processor_info.edx() & (1 << 24))
@@ -122,6 +200,16 @@ UNMAP_AFTER_INIT void Processor::cpu_detect()
         m_features |= CPUFeature::SSE;
     if (processor_info.edx() & (1 << 26))
         m_features |= CPUFeature::SSE2;
+    if (processor_info.edx() & (1 << 27))
+        m_features |= CPUFeature::SS;
+    if (processor_info.edx() & (1 << 28))
+        m_features |= CPUFeature::HTT;
+    if (processor_info.edx() & (1 << 29))
+        m_features |= CPUFeature::TM;
+    if (processor_info.edx() & (1 << 30))
+        m_features |= CPUFeature::IA64;
+    if (processor_info.edx() & (1 << 31))
+        m_features |= CPUFeature::PBE;
 
     CPUID extended_features(0x7);
     if (extended_features.ebx() & (1 << 7))
@@ -290,63 +378,6 @@ UNMAP_AFTER_INIT void Processor::cpu_setup()
 NonnullOwnPtr<KString> Processor::features_string() const
 {
     StringBuilder builder;
-    auto feature_to_str = [](CPUFeature::Type const& feature) -> StringView {
-        if (feature == CPUFeature::NX)
-            return ""nx""sv;
-        if (feature == CPUFeature::PAE)
-            return ""pae""sv;
-        if (feature == CPUFeature::PGE)
-            return ""pge""sv;
-        if (feature == CPUFeature::RDRAND)
-            return ""rdrand""sv;
-        if (feature == CPUFeature::RDSEED)
-            return ""rdseed""sv;
-        if (feature == CPUFeature::SMAP)
-            return ""smap""sv;
-        if (feature == CPUFeature::SMEP)
-            return ""smep""sv;
-        if (feature == CPUFeature::SSE)
-            return ""sse""sv;
-        if (feature == CPUFeature::TSC)
-            return ""tsc""sv;
-        if (feature == CPUFeature::RDTSCP)
-            return ""rdtscp""sv;
-        if (feature == CPUFeature::CONSTANT_TSC)
-            return ""constant_tsc""sv;
-        if (feature == CPUFeature::NONSTOP_TSC)
-            return ""nonstop_tsc""sv;
-        if (feature == CPUFeature::UMIP)
-            return ""umip""sv;
-        if (feature == CPUFeature::SEP)
-            return ""sep""sv;
-        if (feature == CPUFeature::SYSCALL)
-            return ""syscall""sv;
-        if (feature == CPUFeature::MMX)
-            return ""mmx""sv;
-        if (feature == CPUFeature::FXSR)
-            return ""fxsr""sv;
-        if (feature == CPUFeature::SSE2)
-            return ""sse2""sv;
-        if (feature == CPUFeature::SSE3)
-            return ""sse3""sv;
-        if (feature == CPUFeature::SSSE3)
-            return ""ssse3""sv;
-        if (feature == CPUFeature::SSE4_1)
-            return ""sse4.1""sv;
-        if (feature == CPUFeature::SSE4_2)
-            return ""sse4.2""sv;
-        if (feature == CPUFeature::XSAVE)
-            return ""xsave""sv;
-        if (feature == CPUFeature::AVX)
-            return ""avx""sv;
-        if (feature == CPUFeature::LM)
-            return ""lm""sv;
-        if (feature == CPUFeature::HYPERVISOR)
-            return ""hypervisor""sv;
-        if (feature == CPUFeature::PAT)
-            return ""pat""sv;
-        VERIFY_NOT_REACHED();
-    };
     bool first = true;
     for (auto feature = CPUFeature::Type(1u); feature != CPUFeature::__End; feature <<= 1u) {
         if (has_feature(feature)) {
@@ -354,8 +385,7 @@ NonnullOwnPtr<KString> Processor::features_string() const
                 first = false;
             else
                 MUST(builder.try_append(' '));
-            auto str = feature_to_str(feature);
-            MUST(builder.try_append(str));
+            MUST(builder.try_append(cpu_feature_to_string_view(feature)));
         }
     }
     return KString::must_create(builder.string_view());
diff --git a/Kernel/CMakeLists.txt b/Kernel/CMakeLists.txt
index c386ad4cc9c9..e64e6e3ca4f5 100644
--- a/Kernel/CMakeLists.txt
+++ b/Kernel/CMakeLists.txt
@@ -322,6 +322,7 @@ if (""${SERENITY_ARCH}"" STREQUAL ""i686"" OR ""${SERENITY_ARCH}"" STREQUAL ""x86_64"")
         ${KERNEL_SOURCES}
         ${CMAKE_CURRENT_SOURCE_DIR}/Arch/x86/common/ASM_wrapper.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Arch/x86/common/CPU.cpp
+        ${CMAKE_CURRENT_SOURCE_DIR}/Arch/x86/common/CPUID.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Arch/x86/common/Interrupts.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Arch/x86/common/Processor.cpp
         ${CMAKE_CURRENT_SOURCE_DIR}/Arch/x86/common/ProcessorInfo.cpp
diff --git a/Meta/check-debug-flags.sh b/Meta/check-debug-flags.sh
index 6cc80b5744c8..f90e2c530b51 100755
--- a/Meta/check-debug-flags.sh
+++ b/Meta/check-debug-flags.sh
@@ -8,8 +8,8 @@ cd ""${script_path}/..""
 MISSING_FLAGS=n
 
 while IFS= read -r FLAG; do
-    # Ignore ELF_DEBUG because it's not a debug flag.
-    if [ ""$FLAG"" = ""ELF_DEBUG"" ]; then
+    # Ignore false positives that are not debug flags.
+    if [ ""$FLAG"" = ""ELF_DEBUG"" ] || [ ""$FLAG"" = ""IA32_DEBUG_INTERFACE"" ]; then
         continue
     fi"
1e89f7d64efda1740b16537ebdbcc0be0aaf2d7e,2020-04-16 22:19:20,Andreas Kling,kernel: Remove an unnecessary indirection between timer and scheduler,False,Remove an unnecessary indirection between timer and scheduler,kernel,"diff --git a/Kernel/Time/TimeManagement.cpp b/Kernel/Time/TimeManagement.cpp
index 8e6b8042d9a8..8b3830871e73 100644
--- a/Kernel/Time/TimeManagement.cpp
+++ b/Kernel/Time/TimeManagement.cpp
@@ -194,10 +194,10 @@ bool TimeManagement::probe_and_set_non_legacy_hardware_timers()
         }
     }
 
-    m_system_timer->change_function([](const RegisterState& regs) { update_scheduler_ticks(regs); });
+    m_system_timer->change_function(Scheduler::timer_tick);
     dbg() << ""Reset timers"";
     m_system_timer->try_to_set_frequency(m_system_timer->calculate_nearest_possible_frequency(1024));
-    m_time_keeper_timer->change_function([](const RegisterState& regs) { update_time(regs); });
+    m_time_keeper_timer->change_function(TimeManagement::update_time);
     m_time_keeper_timer->try_to_set_frequency(OPTIMAL_TICKS_PER_SECOND_RATE);
 
     return true;
@@ -214,8 +214,8 @@ bool TimeManagement::probe_and_set_legacy_hardware_timers()
         }
     }
 
-    m_hardware_timers.append(PIT::initialize([](const RegisterState& regs) { update_time(regs); }));
-    m_hardware_timers.append(RealTimeClock::create([](const RegisterState& regs) { update_scheduler_ticks(regs); }));
+    m_hardware_timers.append(PIT::initialize(TimeManagement::update_time));
+    m_hardware_timers.append(RealTimeClock::create(Scheduler::timer_tick));
     m_time_keeper_timer = m_hardware_timers[0];
     m_system_timer = m_hardware_timers[1];
     return true;
@@ -237,13 +237,4 @@ void TimeManagement::increment_time_since_boot(const RegisterState&)
     }
 }
 
-void TimeManagement::update_scheduler_ticks(const RegisterState& regs)
-{
-    TimeManagement::the().update_ticks(regs);
-}
-
-void TimeManagement::update_ticks(const RegisterState& regs)
-{
-    Scheduler::timer_tick(regs);
-}
 }
diff --git a/Kernel/Time/TimeManagement.h b/Kernel/Time/TimeManagement.h
index 9daf046fa81b..219eefac0bd1 100644
--- a/Kernel/Time/TimeManagement.h
+++ b/Kernel/Time/TimeManagement.h
@@ -57,9 +57,6 @@ class TimeManagement {
     static void update_time(const RegisterState&);
     void increment_time_since_boot(const RegisterState&);
 
-    static void update_scheduler_ticks(const RegisterState& regs);
-    void update_ticks(const RegisterState&);
-
     static void stale_function(const RegisterState&);
     static bool is_hpet_periodic_mode_allowed();
 
@@ -76,8 +73,6 @@ class TimeManagement {
     time_t m_epoch_time { 0 };
     RefPtr<HardwareTimer> m_system_timer;
     RefPtr<HardwareTimer> m_time_keeper_timer;
-    Function<void(RegisterState&)> m_scheduler_ticking { update_time };
-    Function<void(RegisterState&)> m_stale_method { stale_function };
 };
 
 }"
d953c6b451ed151a62bdd492bda0ddd76feea7d3,2024-11-26 15:30:48,Andrew Kaster,tests: Annotate configurationJSON in SwiftTestMain with noisolate,False,Annotate configurationJSON in SwiftTestMain with noisolate,tests,"diff --git a/Tests/Resources/SwiftTestMain.swift b/Tests/Resources/SwiftTestMain.swift
index 784d4c19b9c5..3b18cc555414 100644
--- a/Tests/Resources/SwiftTestMain.swift
+++ b/Tests/Resources/SwiftTestMain.swift
@@ -13,7 +13,7 @@ func swt_abiv0_getEntryPoint() -> UnsafeRawPointer
 
 @main struct Runner {
     static func main() async throws {
-        let configurationJSON: UnsafeRawBufferPointer? = nil
+        nonisolated(unsafe) let configurationJSON: UnsafeRawBufferPointer? = nil
         let recordHandler: @Sendable (UnsafeRawBufferPointer) -> Void = { _ in }
 
         let entryPoint = unsafeBitCast(swt_abiv0_getEntryPoint(), to: EntryPoint.self)"
7f40a19c712c9eeca065cbdcfd48eb1195b69f21,2024-07-28 17:15:40,doctortheemh,libweb: Fix some typos with text clips,False,Fix some typos with text clips,libweb,"diff --git a/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.cpp b/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.cpp
index 4ac9113267a0..6232e17aee19 100644
--- a/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.cpp
+++ b/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.cpp
@@ -147,7 +147,7 @@ void DisplayListRecorder::fill_rect_with_linear_gradient(Gfx::IntRect const& gra
     append(PaintLinearGradient {
         .gradient_rect = state().translation.map(gradient_rect),
         .linear_gradient_data = data,
-        .text_clip = text_clip });
+        .text_clip = move(text_clip) });
 }
 
 void DisplayListRecorder::fill_rect_with_conic_gradient(Gfx::IntRect const& rect, ConicGradientData const& data, Gfx::IntPoint const& position, RefPtr<DisplayList> text_clip)
@@ -158,7 +158,7 @@ void DisplayListRecorder::fill_rect_with_conic_gradient(Gfx::IntRect const& rect
         .rect = state().translation.map(rect),
         .conic_gradient_data = data,
         .position = position,
-        .text_clip = text_clip });
+        .text_clip = move(text_clip) });
 }
 
 void DisplayListRecorder::fill_rect_with_radial_gradient(Gfx::IntRect const& rect, RadialGradientData const& data, Gfx::IntPoint center, Gfx::IntSize size, RefPtr<DisplayList> text_clip)
@@ -170,7 +170,7 @@ void DisplayListRecorder::fill_rect_with_radial_gradient(Gfx::IntRect const& rec
         .radial_gradient_data = data,
         .center = center,
         .size = size,
-        .text_clip = text_clip });
+        .text_clip = move(text_clip) });
 }
 
 void DisplayListRecorder::draw_rect(Gfx::IntRect const& rect, Color color, bool rough)
@@ -364,13 +364,13 @@ void DisplayListRecorder::paint_text_shadow(int blur_radius, Gfx::IntRect boundi
         .draw_location = state().translation.map(draw_location) });
 }
 
-void DisplayListRecorder::fill_rect_with_rounded_corners(Gfx::IntRect const& rect, Color color, Gfx::AntiAliasingPainter::CornerRadius top_left_radius, Gfx::AntiAliasingPainter::CornerRadius top_right_radius, Gfx::AntiAliasingPainter::CornerRadius bottom_right_radius, Gfx::AntiAliasingPainter::CornerRadius bottom_left_radius, RefPtr<DisplayList> clip_paths)
+void DisplayListRecorder::fill_rect_with_rounded_corners(Gfx::IntRect const& rect, Color color, Gfx::AntiAliasingPainter::CornerRadius top_left_radius, Gfx::AntiAliasingPainter::CornerRadius top_right_radius, Gfx::AntiAliasingPainter::CornerRadius bottom_right_radius, Gfx::AntiAliasingPainter::CornerRadius bottom_left_radius, RefPtr<DisplayList> text_clip)
 {
     if (rect.is_empty())
         return;
 
     if (!top_left_radius && !top_right_radius && !bottom_right_radius && !bottom_left_radius) {
-        fill_rect(rect, color, clip_paths);
+        fill_rect(rect, color, text_clip);
         return;
     }
 
@@ -383,18 +383,18 @@ void DisplayListRecorder::fill_rect_with_rounded_corners(Gfx::IntRect const& rec
             .bottom_right = bottom_right_radius,
             .bottom_left = bottom_left_radius,
         },
-        .text_clip = clip_paths,
+        .text_clip = text_clip,
     });
 }
 
-void DisplayListRecorder::fill_rect_with_rounded_corners(Gfx::IntRect const& a_rect, Color color, int radius, RefPtr<DisplayList> clip_paths)
+void DisplayListRecorder::fill_rect_with_rounded_corners(Gfx::IntRect const& a_rect, Color color, int radius, RefPtr<DisplayList> text_clip)
 {
     if (a_rect.is_empty())
         return;
-    fill_rect_with_rounded_corners(a_rect, color, radius, radius, radius, radius, move(clip_paths));
+    fill_rect_with_rounded_corners(a_rect, color, radius, radius, radius, radius, move(text_clip));
 }
 
-void DisplayListRecorder::fill_rect_with_rounded_corners(Gfx::IntRect const& a_rect, Color color, int top_left_radius, int top_right_radius, int bottom_right_radius, int bottom_left_radius, RefPtr<DisplayList> clip_paths)
+void DisplayListRecorder::fill_rect_with_rounded_corners(Gfx::IntRect const& a_rect, Color color, int top_left_radius, int top_right_radius, int bottom_right_radius, int bottom_left_radius, RefPtr<DisplayList> text_clip)
 {
     if (a_rect.is_empty())
         return;
@@ -403,7 +403,7 @@ void DisplayListRecorder::fill_rect_with_rounded_corners(Gfx::IntRect const& a_r
         { top_right_radius, top_right_radius },
         { bottom_right_radius, bottom_right_radius },
         { bottom_left_radius, bottom_left_radius },
-        clip_paths);
+        move(text_clip));
 }
 
 void DisplayListRecorder::draw_triangle_wave(Gfx::IntPoint a_p1, Gfx::IntPoint a_p2, Color color, int amplitude, int thickness = 1)"
df08b25b3f49a3c9243ae7ec8d54192bcf4cf646,2021-10-09 02:32:57,Sam Atkins,libweb: Move CSSRule iteration to CSSRuleList,False,Move CSSRule iteration to CSSRuleList,libweb,"diff --git a/Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp b/Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp
index ecff5b9118b3..ebb810806fb2 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSRuleList.cpp
@@ -4,6 +4,8 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/TypeCasts.h>
+#include <LibWeb/CSS/CSSImportRule.h>
 #include <LibWeb/CSS/CSSRuleList.h>
 #include <LibWeb/DOM/ExceptionOr.h>
 
@@ -74,4 +76,36 @@ DOM::ExceptionOr<void> CSSRuleList::remove_a_css_rule(u32 index)
     return {};
 }
 
+void CSSRuleList::for_each_effective_style_rule(Function<void(CSSStyleRule const&)> const& callback) const
+{
+    for (auto& rule : m_rules) {
+        if (rule.type() == CSSRule::Type::Style) {
+            callback(verify_cast<CSSStyleRule>(rule));
+        } else if (rule.type() == CSSRule::Type::Import) {
+            const auto& import_rule = verify_cast<CSSImportRule>(rule);
+            if (import_rule.has_import_result())
+                import_rule.loaded_style_sheet()->for_each_effective_style_rule(callback);
+        }
+    }
+}
+
+bool CSSRuleList::for_first_not_loaded_import_rule(Function<void(CSSImportRule&)> const& callback)
+{
+    for (auto& rule : m_rules) {
+        if (rule.type() == CSSRule::Type::Import) {
+            auto& import_rule = verify_cast<CSSImportRule>(rule);
+            if (!import_rule.has_import_result()) {
+                callback(import_rule);
+                return true;
+            }
+
+            if (import_rule.loaded_style_sheet()->for_first_not_loaded_import_rule(callback)) {
+                return true;
+            }
+        }
+    }
+
+    return false;
+}
+
 }
diff --git a/Userland/Libraries/LibWeb/CSS/CSSRuleList.h b/Userland/Libraries/LibWeb/CSS/CSSRuleList.h
index c91c72172074..069d67909ba2 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSRuleList.h
+++ b/Userland/Libraries/LibWeb/CSS/CSSRuleList.h
@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include <AK/Function.h>
 #include <AK/Iterator.h>
 #include <AK/NonnullRefPtrVector.h>
 #include <AK/RefCounted.h>
@@ -50,6 +51,9 @@ class CSSRuleList
     DOM::ExceptionOr<void> remove_a_css_rule(u32 index);
     DOM::ExceptionOr<unsigned> insert_a_css_rule(NonnullRefPtr<CSSRule>, u32 index);
 
+    void for_each_effective_style_rule(Function<void(CSSStyleRule const&)> const& callback) const;
+    bool for_first_not_loaded_import_rule(Function<void(CSSImportRule&)> const& callback);
+
 private:
     explicit CSSRuleList(NonnullRefPtrVector<CSSRule>&&);
 
diff --git a/Userland/Libraries/LibWeb/CSS/CSSStyleSheet.cpp b/Userland/Libraries/LibWeb/CSS/CSSStyleSheet.cpp
index d4a3dcf0650e..b7dab97abdc8 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSStyleSheet.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSStyleSheet.cpp
@@ -4,7 +4,6 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
-#include <LibWeb/CSS/CSSImportRule.h>
 #include <LibWeb/CSS/CSSStyleSheet.h>
 #include <LibWeb/CSS/Parser/Parser.h>
 #include <LibWeb/DOM/ExceptionOr.h>
@@ -60,32 +59,12 @@ DOM::ExceptionOr<void> CSSStyleSheet::remove_rule(unsigned index)
 
 void CSSStyleSheet::for_each_effective_style_rule(Function<void(CSSStyleRule const&)> const& callback) const
 {
-    for (auto& rule : *m_rules)
-        if (rule.type() == CSSRule::Type::Style) {
-            callback(verify_cast<CSSStyleRule>(rule));
-        } else if (rule.type() == CSSRule::Type::Import) {
-            const auto& import_rule = verify_cast<CSSImportRule>(rule);
-            if (import_rule.has_import_result())
-                import_rule.loaded_style_sheet()->for_each_effective_style_rule(callback);
-        }
+    m_rules->for_each_effective_style_rule(callback);
 }
 
 bool CSSStyleSheet::for_first_not_loaded_import_rule(Function<void(CSSImportRule&)> const& callback)
 {
-    for (auto& rule : *m_rules)
-        if (rule.type() == CSSRule::Type::Import) {
-            auto& import_rule = verify_cast<CSSImportRule>(rule);
-            if (!import_rule.has_import_result()) {
-                callback(import_rule);
-                return true;
-            }
-
-            if (import_rule.loaded_style_sheet()->for_first_not_loaded_import_rule(callback)) {
-                return true;
-            }
-        }
-
-    return false;
+    return m_rules->for_first_not_loaded_import_rule(callback);
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/CSS/CSSStyleSheet.h b/Userland/Libraries/LibWeb/CSS/CSSStyleSheet.h
index 576ee76fa0f5..dbbf1970934b 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSStyleSheet.h
+++ b/Userland/Libraries/LibWeb/CSS/CSSStyleSheet.h
@@ -8,7 +8,6 @@
 
 #include <AK/Function.h>
 #include <AK/NonnullRefPtrVector.h>
-#include <AK/TypeCasts.h>
 #include <LibWeb/CSS/CSSRule.h>
 #include <LibWeb/CSS/CSSRuleList.h>
 #include <LibWeb/CSS/CSSStyleRule.h>"
f22c973ba38c1a0850050679203d0fbe1a3d15f9,2020-05-04 13:20:45,Devashish,meta: Add configuration for setting up project in CLion,False,Add configuration for setting up project in CLion,meta,"diff --git a/Documentation/CLionConfiguration.md b/Documentation/CLionConfiguration.md
new file mode 100644
index 000000000000..a6798f637221
--- /dev/null
+++ b/Documentation/CLionConfiguration.md
@@ -0,0 +1,19 @@
+## CLion Project Configuration
+
+Configuring CLion for development requires a CMakeLists.txt file. The one provided in Meta/CLion packs the bare minimum configuration so that you can take advantage of code completion and basic error checking. This is not necessarily the best setup, there could be better ways to configure the IDE. Below instructions are intended for people not familiar with CMake, or who don't want to get bothered setting up the IDE first.
+
+It's assumed that a directory named `serenity` contains all your source files. If you cloned the repository directly from GitHub, this is the directory that git creates to copy sources.
+
+- Create the project directory and cd to it: `mkdir serenity-project && cd serenity-project`
+- Move `serenity` to the project directory: `mv <path/to/serenity> .`
+- Copy CMake file to project directory: `cp serenity/Meta/CLion/CMakeLists.txt .`
+- Create new CMake project in IDE: `File->New CMake Project from Sources`
+- In the file selection dialog, find and select `serenity-project`, then click OK.
+
+The project will start loading. Building the index for the first time takes a while. Let it finish the first scan. Once it's done, you can start hacking :)
+
+**Note:** Don't create a new git repo in `serenity-project`. The whole point of wrapping the sources to a new directory is to keep the project files created by CLion away from the main repository (the `.git` in `serenity`).  
+
+**Note:** If you don't want the workspace to list files ending with certain extensions, go to `File->Settings->Editor->File Types` and add entries in the `Ignore files and folders` field.
+
+**Note:** If you have created the project after building serenity, you may get link errors on `makeall.sh` after moving `serenity` to the project directory. If you move `serenity` out to its original location, the build will succeed. It is recommended that you create a simple script that merely moves `serenity` before attempting to rebuild and once the build finishes, moves `serenity` back to the project directory. It's inconvenient, but kind of necessary.
diff --git a/Meta/CLion/CMakeLists.txt b/Meta/CLion/CMakeLists.txt
new file mode 100644
index 000000000000..4e060c8b4a75
--- /dev/null
+++ b/Meta/CLion/CMakeLists.txt
@@ -0,0 +1,48 @@
+cmake_minimum_required(VERSION 3.0)
+project(serenity)
+set(CMAKE_CXX_STANDARD 17)
+
+file(GLOB_RECURSE AK_SOURCES ""serenity/AK/*.cpp"")
+file(GLOB_RECURSE APPLICATIONS_SOURCES ""serenity/Applications/*.cpp"")
+file(GLOB_RECURSE BASE_SOURCES ""serenity/Base/*.cpp"")
+file(GLOB_RECURSE DEMOS_SOURCES ""serenity/Demos/*.cpp"")
+file(GLOB_RECURSE DEVTOOLS_SOURCES ""serenity/DevTools/*.cpp"")
+file(GLOB_RECURSE GAMES_SOURCES ""serenity/Games/*.cpp"")
+file(GLOB_RECURSE KERNEL_SOURCES ""serenity/Kernel/*.cpp"")
+file(GLOB_RECURSE LIBRARIES_SOURCES ""serenity/Libraries/*.cpp"")
+file(GLOB_RECURSE MENU_APPLETS_SOURCES ""serenity/MenuApplets/*.cpp"")
+file(GLOB_RECURSE PORTS_SOURCES ""serenity/Ports/*.cpp"")
+file(GLOB_RECURSE SERVERS_SOURCES ""serenity/Servers/*.cpp"")
+file(GLOB_RECURSE SHELL_SOURCES ""serenity/Shell/*.cpp"")
+file(GLOB_RECURSE TESTS_SOURCES ""serenity/Tests/*.cpp"")
+file(GLOB_RECURSE TOOLCHAIN_SOURCES ""serenity/Toolchain/*.cpp"")
+file(GLOB_RECURSE USERLAND_SOURCES ""serenity/Userland/*.cpp"")
+
+set(INCLUDE_DIRS
+    ""serenity""
+    ""serenity/Kernel""
+    ""serenity/Libraries""
+    ""serenity/Libraries/LibC""
+    ""serenity/Libraries/LibPthread""
+    ""serenity/Servers""
+    ""serenity/Toolchain/Local/i686-pc-serenity/include/c++/9.3.0"")
+
+add_library(serenity
+    ${AK_SOURCES}
+    ${APPLICATIONS_SOURCES}
+    ${BASE_SOURCES}
+    ${DEMOS_SOURCES}
+    ${DEVTOOLS_SOURCES}
+    ${GAMES_SOURCES}
+    ${KERNEL_SOURCES}
+    ${LIBRARIES_SOURCES}
+    ${MENU_APPLETS_SOURCES}
+    ${PORTS_SOURCES}
+    ${SERVERS_SOURCES}
+    ${SHELL_SOURCES}
+    ${TESTS_SOURCES}
+    ${TOOLCHAIN_SOURCES}
+    ${USERLAND_SOURCES})
+
+target_compile_definitions(serenity PRIVATE __serenity__ USERLAND SANITIZE_PTRS DEBUG)
+target_include_directories(serenity PRIVATE ${INCLUDE_DIRS})"
86d5e5a90cfa691f76cc5b76c0f2b07ca5cf8c3d,2022-05-08 20:06:53,faxe1008,libgui: Add button to PasswordBox to reveal the password,False,Add button to PasswordBox to reveal the password,libgui,"diff --git a/Userland/Libraries/LibGUI/TextBox.cpp b/Userland/Libraries/LibGUI/TextBox.cpp
index c70d2cd86256..b2a107524e5f 100644
--- a/Userland/Libraries/LibGUI/TextBox.cpp
+++ b/Userland/Libraries/LibGUI/TextBox.cpp
@@ -5,7 +5,9 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <LibGUI/Painter.h>
 #include <LibGUI/TextBox.h>
+#include <LibGfx/Palette.h>
 
 REGISTER_WIDGET(GUI, TextBox)
 REGISTER_WIDGET(GUI, PasswordBox)
@@ -71,11 +73,59 @@ void TextBox::add_input_to_history(String input)
     m_history_index++;
 }
 
+constexpr u32 password_box_substitution_code_point = '*';
+
 PasswordBox::PasswordBox()
     : TextBox()
 {
-    set_substitution_code_point('*');
+    set_substitution_code_point(password_box_substitution_code_point);
     set_text_is_secret(true);
+    REGISTER_BOOL_PROPERTY(""show_reveal_button"", is_showing_reveal_button, set_show_reveal_button);
+}
+
+Gfx::IntRect PasswordBox::reveal_password_button_rect() const
+{
+    constexpr i32 button_box_margin = 3;
+    auto button_box_size = height() - button_box_margin - button_box_margin;
+    return { width() - button_box_size - button_box_margin, button_box_margin, button_box_size, button_box_size };
+}
+
+void PasswordBox::paint_event(PaintEvent& event)
+{
+    TextBox::paint_event(event);
+
+    if (is_showing_reveal_button()) {
+        auto button_rect = reveal_password_button_rect();
+
+        Painter painter(*this);
+        painter.add_clip_rect(event.rect());
+
+        auto icon_color = palette().button_text();
+        if (substitution_code_point().has_value())
+            icon_color = palette().disabled_text_front();
+
+        i32 dot_indicator_padding = height() / 5;
+
+        Gfx::IntRect dot_indicator_rect = { button_rect.x() + dot_indicator_padding, button_rect.y() + dot_indicator_padding, button_rect.width() - dot_indicator_padding * 2, button_rect.height() - dot_indicator_padding * 2 };
+        painter.fill_ellipse(dot_indicator_rect, icon_color);
+
+        Gfx::IntPoint arc_start_point { dot_indicator_rect.x() - dot_indicator_padding / 2, dot_indicator_rect.y() + dot_indicator_padding / 2 };
+        Gfx::IntPoint arc_end_point = { dot_indicator_rect.top_right().x() + dot_indicator_padding / 2, dot_indicator_rect.top_right().y() + dot_indicator_padding / 2 };
+        Gfx::IntPoint arc_center_point = { dot_indicator_rect.center().x(), dot_indicator_rect.top() - dot_indicator_padding };
+        painter.draw_quadratic_bezier_curve(arc_center_point, arc_start_point, arc_end_point, icon_color, 1);
+    }
+}
+
+void PasswordBox::mousedown_event(GUI::MouseEvent& event)
+{
+    if (is_showing_reveal_button() && reveal_password_button_rect().contains(event.position())) {
+        Optional<u32> next_substitution_code_point;
+        if (!substitution_code_point().has_value())
+            next_substitution_code_point = password_box_substitution_code_point;
+        set_substitution_code_point(next_substitution_code_point);
+    } else {
+        TextBox::mousedown_event(event);
+    }
 }
 
 UrlBox::UrlBox()
diff --git a/Userland/Libraries/LibGUI/TextBox.h b/Userland/Libraries/LibGUI/TextBox.h
index fc73af4d7401..3ac2fb8a2619 100644
--- a/Userland/Libraries/LibGUI/TextBox.h
+++ b/Userland/Libraries/LibGUI/TextBox.h
@@ -42,8 +42,23 @@ class TextBox : public TextEditor {
 
 class PasswordBox : public TextBox {
     C_OBJECT(PasswordBox)
+public:
+    bool is_showing_reveal_button() const { return m_show_reveal_button; }
+    void set_show_reveal_button(bool show)
+    {
+        m_show_reveal_button = show;
+        update();
+    }
+
 private:
     PasswordBox();
+
+    virtual void paint_event(PaintEvent&) override;
+    virtual void mousedown_event(GUI::MouseEvent&) override;
+
+    Gfx::IntRect reveal_password_button_rect() const;
+
+    bool m_show_reveal_button { false };
 };
 
 class UrlBox : public TextBox {"
8d27292fac28af04587be5e5330db525ef89816b,2021-10-17 18:21:10,Timothy Flynn,libweb: Alphabetize LibWeb's forward and JS wrapper declarations,False,Alphabetize LibWeb's forward and JS wrapper declarations,libweb,"diff --git a/Userland/Libraries/LibWeb/CMakeLists.txt b/Userland/Libraries/LibWeb/CMakeLists.txt
index d3188546b690..2f407f770344 100644
--- a/Userland/Libraries/LibWeb/CMakeLists.txt
+++ b/Userland/Libraries/LibWeb/CMakeLists.txt
@@ -380,11 +380,11 @@ libweb_js_wrapper(DOM/Element)
 libweb_js_wrapper(DOM/Event)
 libweb_js_wrapper(DOM/EventTarget)
 libweb_js_wrapper(DOM/HTMLCollection)
-libweb_js_wrapper(DOM/ProcessingInstruction)
-libweb_js_wrapper(DOM/ShadowRoot)
 libweb_js_wrapper(DOM/Node)
 libweb_js_wrapper(DOM/NodeList)
+libweb_js_wrapper(DOM/ProcessingInstruction)
 libweb_js_wrapper(DOM/Range)
+libweb_js_wrapper(DOM/ShadowRoot)
 libweb_js_wrapper(DOM/Text)
 libweb_js_wrapper(Geometry/DOMRect)
 libweb_js_wrapper(Geometry/DOMRectReadOnly)
@@ -486,11 +486,11 @@ libweb_js_wrapper(Selection/Selection)
 libweb_js_wrapper(UIEvents/KeyboardEvent)
 libweb_js_wrapper(UIEvents/MouseEvent)
 libweb_js_wrapper(UIEvents/UIEvent)
+libweb_js_wrapper(URL/URL)
+libweb_js_wrapper(URL/URLSearchParams ITERABLE)
 libweb_js_wrapper(XHR/ProgressEvent)
 libweb_js_wrapper(XHR/XMLHttpRequest)
 libweb_js_wrapper(XHR/XMLHttpRequestEventTarget)
-libweb_js_wrapper(URL/URL)
-libweb_js_wrapper(URL/URLSearchParams ITERABLE)
 
 add_custom_command(
     OUTPUT CSS/PropertyID.h
diff --git a/Userland/Libraries/LibWeb/Forward.h b/Userland/Libraries/LibWeb/Forward.h
index 39764e2dad36..ab862c7c11a2 100644
--- a/Userland/Libraries/LibWeb/Forward.h
+++ b/Userland/Libraries/LibWeb/Forward.h
@@ -18,7 +18,14 @@ class Crypto;
 }
 
 namespace Web::CSS {
+class BackgroundRepeatStyleValue;
+class BackgroundStyleValue;
+class BorderRadiusStyleValue;
+class BorderStyleValue;
+class BoxShadowStyleValue;
+class CalculatedStyleValue;
 class CalculatedStyleValue;
+class ColorStyleValue;
 class CSSImportRule;
 class CSSMediaRule;
 class CSSRule;
@@ -27,30 +34,9 @@ class CSSStyleDeclaration;
 class CSSStyleRule;
 class CSSStyleSheet;
 class CSSSupportsRule;
+class CustomStyleValue;
 class Display;
 class ElementInlineCSSStyleDeclaration;
-class Length;
-class MediaList;
-class MediaQuery;
-class MediaQueryList;
-class MediaQueryListEvent;
-class PropertyOwningCSSStyleDeclaration;
-class Screen;
-class Selector;
-class StyleProperties;
-class StyleComputer;
-class StyleSheet;
-class Supports;
-
-class StyleValue;
-class BackgroundRepeatStyleValue;
-class BackgroundStyleValue;
-class BorderRadiusStyleValue;
-class BorderStyleValue;
-class BoxShadowStyleValue;
-class CalculatedStyleValue;
-class ColorStyleValue;
-class CustomStyleValue;
 class FlexFlowStyleValue;
 class FlexStyleValue;
 class FontStyleValue;
@@ -58,15 +44,28 @@ class IdentifierStyleValue;
 class ImageStyleValue;
 class InheritStyleValue;
 class InitialStyleValue;
+class Length;
 class LengthStyleValue;
 class ListStyleStyleValue;
+class MediaList;
+class MediaQuery;
+class MediaQueryList;
+class MediaQueryListEvent;
 class NumericStyleValue;
 class OverflowStyleValue;
+class PropertyOwningCSSStyleDeclaration;
+class Screen;
+class Selector;
 class StringStyleValue;
+class StyleComputer;
+class StyleProperties;
+class StyleSheet;
+class StyleValue;
+class StyleValueList;
+class Supports;
 class TextDecorationStyleValue;
 class TransformationStyleValue;
 class UnsetStyleValue;
-class StyleValueList;
 }
 
 namespace Web::DOM {
@@ -93,12 +92,12 @@ class NodeList;
 class ParentNode;
 class Position;
 class ProcessingInstruction;
+class Range;
 class ShadowRoot;
 class StaticNodeList;
 class Text;
 class Timer;
 class Window;
-class Range;
 enum class QuirksMode;
 
 template<typename ValueType>
@@ -133,7 +132,6 @@ class HTMLDialogElement;
 class HTMLDirectoryElement;
 class HTMLDivElement;
 class HTMLDListElement;
-class HTMLParser;
 class HTMLElement;
 class HTMLEmbedElement;
 class HTMLFieldSetElement;
@@ -166,6 +164,7 @@ class HTMLOptionElement;
 class HTMLOutputElement;
 class HTMLParagraphElement;
 class HTMLParamElement;
+class HTMLParser;
 class HTMLPictureElement;
 class HTMLPreElement;
 class HTMLProgressElement;
@@ -255,9 +254,9 @@ class TextNode;
 }
 
 namespace Web {
-class EventHandler;
-class EditEventHandler;
 class BrowsingContext;
+class EditEventHandler;
+class EventHandler;
 class FrameLoader;
 class InProcessWebView;
 class LoadRequest;
@@ -291,16 +290,16 @@ class URLSearchParamsIterator;
 namespace Web::Bindings {
 class AbortControllerWrapper;
 class AbortSignalWrapper;
+class CanvasRenderingContext2DWrapper;
+class CharacterDataWrapper;
+class CloseEventWrapper;
+class CommentWrapper;
 class CryptoWrapper;
 class CSSRuleListWrapper;
 class CSSRuleWrapper;
 class CSSStyleDeclarationWrapper;
 class CSSStyleRuleWrapper;
 class CSSStyleSheetWrapper;
-class CanvasRenderingContext2DWrapper;
-class CharacterDataWrapper;
-class CloseEventWrapper;
-class CommentWrapper;
 class CustomEventWrapper;
 class DocumentFragmentWrapper;
 class DocumentTypeWrapper;
@@ -308,8 +307,8 @@ class DocumentWrapper;
 class DOMExceptionWrapper;
 class DOMImplementationWrapper;
 class DOMParserWrapper;
-class DOMRectWrapper;
 class DOMRectReadOnlyWrapper;
+class DOMRectWrapper;
 class DOMStringMapWrapper;
 class ElementWrapper;
 class EventListenerWrapper;
@@ -339,9 +338,9 @@ class HTMLFontElementWrapper;
 class HTMLFormElementWrapper;
 class HTMLFrameElementWrapper;
 class HTMLFrameSetElementWrapper;
-class HTMLHRElementWrapper;
 class HTMLHeadElementWrapper;
 class HTMLHeadingElementWrapper;
+class HTMLHRElementWrapper;
 class HTMLHtmlElementWrapper;
 class HTMLIFrameElementWrapper;
 class HTMLImageElementWrapper;
@@ -393,8 +392,8 @@ class ImageDataWrapper;
 class IntersectionObserverWrapper;
 class KeyboardEventWrapper;
 class LocationObject;
-class MediaQueryListWrapper;
 class MediaQueryListEventWrapper;
+class MediaQueryListWrapper;
 class MessageChannelWrapper;
 class MessageEventWrapper;
 class MessagePortWrapper;
@@ -407,37 +406,37 @@ class PerformanceWrapper;
 class ProcessingInstructionWrapper;
 class ProgressEventWrapper;
 class PromiseRejectionEventWrapper;
+class RangeConstructor;
+class RangePrototype;
+class RangeWrapper;
 class ResizeObserverWrapper;
 class ScreenWrapper;
 class ScriptExecutionContext;
+class SelectionWrapper;
+class StyleSheetListWrapper;
+class StyleSheetWrapper;
 class SubmitEventWrapper;
 class SVGElementWrapper;
 class SVGGeometryElementWrapper;
 class SVGGraphicsElementWrapper;
 class SVGPathElementWrapper;
 class SVGSVGElementWrapper;
-class SelectionWrapper;
-class StyleSheetWrapper;
-class StyleSheetListWrapper;
 class TextWrapper;
 class UIEventWrapper;
+class URLConstructor;
+class URLPrototype;
+class URLSearchParamsConstructor;
+class URLSearchParamsIteratorPrototype;
+class URLSearchParamsIteratorWrapper;
+class URLSearchParamsPrototype;
+class URLSearchParamsWrapper;
+class URLWrapper;
 class WebSocketWrapper;
 class WindowObject;
 class Wrappable;
 class Wrapper;
 class XMLHttpRequestConstructor;
+class XMLHttpRequestEventTargetWrapper;
 class XMLHttpRequestPrototype;
 class XMLHttpRequestWrapper;
-class XMLHttpRequestEventTargetWrapper;
-class RangeConstructor;
-class RangePrototype;
-class RangeWrapper;
-class URLConstructor;
-class URLPrototype;
-class URLWrapper;
-class URLSearchParamsConstructor;
-class URLSearchParamsPrototype;
-class URLSearchParamsWrapper;
-class URLSearchParamsIteratorPrototype;
-class URLSearchParamsIteratorWrapper;
 }"
87a43fa87c4bf787e92973edc6f5503d7dcce798,2021-04-18 21:44:44,Linus Groh,libjs: Use 'if constexpr' instead of '#if HEAP_DEBUG',False,Use 'if constexpr' instead of '#if HEAP_DEBUG',libjs,"diff --git a/Userland/Libraries/LibJS/Heap/Heap.cpp b/Userland/Libraries/LibJS/Heap/Heap.cpp
index d0351af1be75..b27586f11231 100644
--- a/Userland/Libraries/LibJS/Heap/Heap.cpp
+++ b/Userland/Libraries/LibJS/Heap/Heap.cpp
@@ -116,11 +116,11 @@ void Heap::gather_roots(HashTable<Cell*>& roots)
         }
     }
 
-#if HEAP_DEBUG
-    dbgln(""gather_roots:"");
-    for (auto* root : roots)
-        dbgln(""  + {}"", root);
-#endif
+    if constexpr (HEAP_DEBUG) {
+        dbgln(""gather_roots:"");
+        for (auto* root : roots)
+            dbgln(""  + {}"", root);
+    }
 }
 
 __attribute__((no_sanitize(""address""))) void Heap::gather_conservative_roots(HashTable<Cell*>& roots)
@@ -239,12 +239,12 @@ void Heap::sweep_dead_cells(bool print_report, const Core::ElapsedTimer& measure
         allocator_for_size(block->cell_size()).block_did_become_usable({}, *block);
     }
 
-#if HEAP_DEBUG
-    for_each_block([&](auto& block) {
-        dbgln("" > Live HeapBlock @ {}: cell_size={}"", &block, block.cell_size());
-        return IterationDecision::Continue;
-    });
-#endif
+    if constexpr (HEAP_DEBUG) {
+        for_each_block([&](auto& block) {
+            dbgln("" > Live HeapBlock @ {}: cell_size={}"", &block, block.cell_size());
+            return IterationDecision::Continue;
+        });
+    }
 
     int time_spent = measurement_timer.elapsed();"
8929c7b474d7e8e31efdd20ef953ff8abb024049,2023-03-10 02:24:59,Andreas Kling,libweb: Remove FFC hack where we assign flex item box dimensions twice,False,Remove FFC hack where we assign flex item box dimensions twice,libweb,"diff --git a/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
index 25afc6c729fe..076bd48424f6 100644
--- a/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
@@ -221,12 +221,6 @@ void FlexFormattingContext::run(Box const& run_box, LayoutMode, AvailableSpace c
             independent_formatting_context->parent_context_did_dimension_child_root_box();
     }
 
-    // FIXME: We run the ""copy dimensions"" step *again* here, in order to override any sizes
-    //        assigned to the flex item by the ""layout inside"" step above. This is definitely not
-    //        part of the spec, and simply covering up the fact that our inside layout currently
-    //        mutates the height of BFC roots.
-    copy_dimensions_from_flex_items_to_boxes();
-
     if (available_width.is_intrinsic_sizing_constraint() || available_height.is_intrinsic_sizing_constraint()) {
         // We're computing intrinsic size for the flex container.
         determine_intrinsic_size_of_flex_container();"
9dde7dcd701266d36563a38da7c781fa1a9cc1c5,2022-05-04 01:47:28,Tim Schumacher,ports: Fix the default Toolchain name in .hosted_defs.sh,False,Fix the default Toolchain name in .hosted_defs.sh,ports,"diff --git a/Ports/.hosted_defs.sh b/Ports/.hosted_defs.sh
index 7f7e9fbaf405..97d6d50423a1 100644
--- a/Ports/.hosted_defs.sh
+++ b/Ports/.hosted_defs.sh
@@ -3,7 +3,7 @@
 SCRIPT=""$(dirname ""${0}"")""
 
 export SERENITY_ARCH=""${SERENITY_ARCH:-i686}""
-export SERENITY_TOOLCHAIN=""${SERENITY_TOOLCHAIN:-GCC}""
+export SERENITY_TOOLCHAIN=""${SERENITY_TOOLCHAIN:-GNU}""
 
 if [ -z ""${HOST_CC:=}"" ]; then
     export HOST_CC=""${CC:=cc}"""
1712b6b3eda1faeca7abefcadf2ab8578dc54a70,2022-08-14 22:54:30,EWouters,ports: Add port aria2 version 1.36.0,False,Add port aria2 version 1.36.0,ports,"diff --git a/Ports/AvailablePorts.md b/Ports/AvailablePorts.md
index 7e66fd330292..a72848123878 100644
--- a/Ports/AvailablePorts.md
+++ b/Ports/AvailablePorts.md
@@ -9,6 +9,7 @@ This list is also available at [ports.serenityos.net](https://ports.serenityos.n
 | [`acpica-tools`](acpica-tools/)                     | ACPI Component Architecture Project Userspace Utilities         | 20220331                 | https://acpica.org/downloads                                                   |
 | [`angband`](angband/)                               | Angband                                                         | 4.2.4                    | https://rephial.org                                                            |
 | [`Another-World`](Another-World/)                   | Another World Bytecode Interpreter                              |                          | https://github.com/fabiensanglard/Another-World-Bytecode-Interpreter           |
+| [`aria2`](aria2/)                                   | aria2                                                           | 1.36.0                   | https://aria2.github.io                                                        |
 | [`awk`](awk/)                                       | The One True Awk                                                | 20220122                 | https://github.com/onetrueawk/awk                                              |
 | [`bash`](bash/)                                     | GNU Bash                                                        | 5.1.16                   | https://www.gnu.org/software/bash/                                             |
 | [`bass`](bass/)                                     | Beneath a Steel Sky                                             | cd-1.2                   | https://www.scummvm.org/games                                                  |
diff --git a/Ports/aria2/package.sh b/Ports/aria2/package.sh
new file mode 100755
index 000000000000..0dad6f49a7bf
--- /dev/null
+++ b/Ports/aria2/package.sh
@@ -0,0 +1,19 @@
+#!/usr/bin/env -S bash ../.port_include.sh
+port='aria2'
+version='1.36.0'
+files=""https://github.com/aria2/aria2/releases/download/release-${version}/aria2-${version}.tar.xz ${port}-${version}.tar.xz 58d1e7608c12404f0229a3d9a4953d0d00c18040504498b483305bcb3de907a5""
+auth_type='sha256'
+depends=(
+    ""libssh2""
+    ""libxml2""
+    ""openssl""
+    ""zlib""
+    ""libuv""
+)
+useconfigure='true'
+use_fresh_config_sub='true'
+config_sub_paths+=(""deps/wslay/config.sub"")
+configopts+=(
+    ""--with-libuv""
+    ""--with-sysroot=${SERENITY_INSTALL_ROOT}""
+)
diff --git a/Ports/aria2/patches/0001-Include-sys-select.h-in-src-SelectEventPoll.cc.patch b/Ports/aria2/patches/0001-Include-sys-select.h-in-src-SelectEventPoll.cc.patch
new file mode 100644
index 000000000000..0027399325c3
--- /dev/null
+++ b/Ports/aria2/patches/0001-Include-sys-select.h-in-src-SelectEventPoll.cc.patch
@@ -0,0 +1,21 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: EWouters <6179932+EWouters@users.noreply.github.com>
+Date: Thu, 14 Apr 2022 00:22:19 +0200
+Subject: [PATCH] Include sys/select.h in src/SelectEventPoll.cc
+
+---
+ src/SelectEventPoll.cc | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/src/SelectEventPoll.cc b/src/SelectEventPoll.cc
+index d9397b2..49b1f03 100644
+--- a/src/SelectEventPoll.cc
++++ b/src/SelectEventPoll.cc
+@@ -40,6 +40,7 @@
+ #include <cstring>
+ #include <algorithm>
+ #include <numeric>
++#include <sys/select.h>
+ 
+ #include ""Command.h""
+ #include ""LogFactory.h""
diff --git a/Ports/aria2/patches/ReadMe.md b/Ports/aria2/patches/ReadMe.md
new file mode 100644
index 000000000000..533ee9ada986
--- /dev/null
+++ b/Ports/aria2/patches/ReadMe.md
@@ -0,0 +1,7 @@
+# Patches for aria2 on SerenityOS
+
+## `0001-Include-sys-select.h-in-src-SelectEventPoll.cc.patch`
+
+Include sys/select.h in src/SelectEventPoll.cc
+
+"
fa5800ebc52a51ad66ddbf5a97ffb9fbb5424b70,2024-08-07 05:23:38,Jamie Mansfield,libweb: Implement HTMLTableCellElement.cellIndex,False,Implement HTMLTableCellElement.cellIndex,libweb,"diff --git a/Tests/LibWeb/Text/expected/HTML/HTMLTableCellElement-cellIndex-attribute.txt b/Tests/LibWeb/Text/expected/HTML/HTMLTableCellElement-cellIndex-attribute.txt
new file mode 100644
index 000000000000..eed273bb6798
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/HTML/HTMLTableCellElement-cellIndex-attribute.txt
@@ -0,0 +1,4 @@
+lone td.cellIndex = -1
+parented td.cellIndex = 0
+lone th.cellIndex = -1
+parented th.cellIndex = 0
diff --git a/Tests/LibWeb/Text/input/HTML/HTMLTableCellElement-cellIndex-attribute.html b/Tests/LibWeb/Text/input/HTML/HTMLTableCellElement-cellIndex-attribute.html
new file mode 100644
index 000000000000..f7cbe1587f94
--- /dev/null
+++ b/Tests/LibWeb/Text/input/HTML/HTMLTableCellElement-cellIndex-attribute.html
@@ -0,0 +1,22 @@
+<!DOCTYPE html>
+<script src=""../include.js""></script>
+<script>
+    test(() => {
+        const testElements = [""td"", ""th""];
+
+        for (const elementName of testElements) {
+            // Test a <td> / <th> element with no parent.
+            {
+                const element = document.createElement(elementName);
+                println(`lone ${elementName}.cellIndex = ${element.cellIndex}`);
+            }
+
+            // Test a <td> / <th> element with a parent <tr> element>.
+            {
+                const tr = document.createElement(""tr"");
+                const element = tr.appendChild(document.createElement(elementName));
+                println(`parented ${elementName}.cellIndex = ${element.cellIndex}`);
+            }
+        }
+    });
+</script>
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.cpp
index 573e0fad1756..d7f5e147b789 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.cpp
@@ -1,5 +1,6 @@
 /*
  * Copyright (c) 2020-2022, Andreas Kling <kling@serenityos.org>
+ * Copyright (c) 2024, Jamie Mansfield <jmansfield@cadixdev.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -13,6 +14,7 @@
 #include <LibWeb/CSS/StyleValues/ImageStyleValue.h>
 #include <LibWeb/CSS/StyleValues/LengthStyleValue.h>
 #include <LibWeb/DOM/Document.h>
+#include <LibWeb/DOM/HTMLCollection.h>
 #include <LibWeb/HTML/HTMLTableCellElement.h>
 #include <LibWeb/HTML/HTMLTableElement.h>
 #include <LibWeb/HTML/Numbers.h>
@@ -150,6 +152,24 @@ WebIDL::ExceptionOr<void> HTMLTableCellElement::set_row_span(unsigned int value)
     return set_attribute(HTML::AttributeNames::rowspan, MUST(String::number(value)));
 }
 
+// https://html.spec.whatwg.org/multipage/tables.html#dom-tdth-cellindex
+WebIDL::Long HTMLTableCellElement::cell_index() const
+{
+    // The cellIndex IDL attribute must, if the element has a parent tr element, return the index of the cell's
+    // element in the parent element's cells collection. If there is no such parent element, then the attribute
+    // must return −1.
+    auto const* parent = first_ancestor_of_type<HTMLTableRowElement>();
+    if (!parent)
+        return -1;
+
+    auto rows = parent->cells()->collect_matching_elements();
+    for (size_t i = 0; i < rows.size(); ++i) {
+        if (rows[i] == this)
+            return i;
+    }
+    return -1;
+}
+
 Optional<ARIA::Role> HTMLTableCellElement::default_role() const
 {
     // TODO: For td:
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.h b/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.h
index 64fa43eb61df..4e13a1070805 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.h
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include <LibWeb/HTML/HTMLElement.h>
+#include <LibWeb/WebIDL/Types.h>
 
 namespace Web::HTML {
 
@@ -23,6 +24,8 @@ class HTMLTableCellElement final : public HTMLElement {
     WebIDL::ExceptionOr<void> set_col_span(unsigned);
     WebIDL::ExceptionOr<void> set_row_span(unsigned);
 
+    WebIDL::Long cell_index() const;
+
     virtual Optional<ARIA::Role> default_role() const override;
 
 private:
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.idl b/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.idl
index 1e84585b3994..a3c4c6d430a1 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.idl
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.idl
@@ -9,7 +9,7 @@ interface HTMLTableCellElement : HTMLElement {
     [CEReactions] attribute unsigned long colSpan;
     [CEReactions] attribute unsigned long rowSpan;
     [CEReactions, Reflect] attribute DOMString headers;
-    [FIXME] readonly attribute long cellIndex;
+    readonly attribute long cellIndex;
 
     [FIXME, CEReactions] attribute DOMString scope; // only conforming for th elements
     [CEReactions, Reflect] attribute DOMString abbr;  // only conforming for th elements"
db98ed5ed0ba175e6f4c413750ca05932818aa4b,2021-10-01 10:34:59,Samuel Bowman,spreadsheet: Add a toolbar,False,Add a toolbar,spreadsheet,"diff --git a/Userland/Applications/Spreadsheet/SpreadsheetWidget.cpp b/Userland/Applications/Spreadsheet/SpreadsheetWidget.cpp
index bf22d4daefc8..5556c386b24d 100644
--- a/Userland/Applications/Spreadsheet/SpreadsheetWidget.cpp
+++ b/Userland/Applications/Spreadsheet/SpreadsheetWidget.cpp
@@ -18,6 +18,8 @@
 #include <LibGUI/Splitter.h>
 #include <LibGUI/TabWidget.h>
 #include <LibGUI/TextEditor.h>
+#include <LibGUI/Toolbar.h>
+#include <LibGUI/ToolbarContainer.h>
 #include <LibGfx/FontDatabase.h>
 #include <string.h>
 
@@ -28,6 +30,10 @@ SpreadsheetWidget::SpreadsheetWidget(NonnullRefPtrVector<Sheet>&& sheets, bool s
 {
     set_fill_with_background_color(true);
     set_layout<GUI::VerticalBoxLayout>().set_margins(2);
+
+    auto& toolbar_container = add<GUI::ToolbarContainer>();
+    auto& toolbar = toolbar_container.add<GUI::Toolbar>();
+
     auto& container = add<GUI::VerticalSplitter>();
 
     auto& top_bar = container.add<GUI::Frame>();
@@ -207,6 +213,14 @@ SpreadsheetWidget::SpreadsheetWidget(NonnullRefPtrVector<Sheet>&& sheets, bool s
         window());
 
     m_about_action = GUI::CommonActions::make_about_action(""Spreadsheet"", GUI::Icon::default_icon(""app-spreadsheet""), window());
+
+    toolbar.add_action(*m_new_action);
+    toolbar.add_action(*m_open_action);
+    toolbar.add_action(*m_save_action);
+    toolbar.add_separator();
+    toolbar.add_action(*m_cut_action);
+    toolbar.add_action(*m_copy_action);
+    toolbar.add_action(*m_paste_action);
 }
 
 void SpreadsheetWidget::resize_event(GUI::ResizeEvent& event)"
d65e8735f62f3e3424c2311eae7b2ff60ef0d8b2,2024-01-15 03:46:45,Hugh Davenport,ports: Add hotkey for Internet system menu,False,Add hotkey for Internet system menu,ports,"diff --git a/Ports/alpine/package.sh b/Ports/alpine/package.sh
index 05ce428822ec..da2d53206792 100755
--- a/Ports/alpine/package.sh
+++ b/Ports/alpine/package.sh
@@ -17,7 +17,7 @@ depends=(
     'ca-certificates'
 )
 launcher_name='Alpine'
-launcher_category='Internet'
+launcher_category='&Internet'
 launcher_command='/usr/local/bin/alpine'
 launcher_run_in_terminal='true'
 icon_file='web/cgi/favicon.ico'"
c63d66e32fe05a01e32924e174b8930af1ba30f5,2023-07-04 03:24:51,MacDue,base: Add high-quality vectorized Buggie .tvg file,False,Add high-quality vectorized Buggie .tvg file,base,"diff --git a/Base/res/graphics/buggie.tvg b/Base/res/graphics/buggie.tvg
new file mode 100644
index 000000000000..c82d5a4e36f5
Binary files /dev/null and b/Base/res/graphics/buggie.tvg differ"
2a4969d281a9a9ff213a24a2eaa0c33f24bb5a74,2021-10-14 05:53:08,James Mintram,kernel: Move asserts inside platform #if clauses,False,Move asserts inside platform #if clauses,kernel,"diff --git a/Kernel/Arch/x86/RegisterState.h b/Kernel/Arch/x86/RegisterState.h
index ceb7f3ec736d..4affaa55ea97 100644
--- a/Kernel/Arch/x86/RegisterState.h
+++ b/Kernel/Arch/x86/RegisterState.h
@@ -118,10 +118,11 @@ struct [[gnu::packed]] RegisterState {
 
 #if ARCH(I386)
 #    define REGISTER_STATE_SIZE (19 * 4)
-#else
+static_assert(AssertSize<RegisterState, REGISTER_STATE_SIZE>());
+#elif ARCH(X86_64)
 #    define REGISTER_STATE_SIZE (22 * 8)
-#endif
 static_assert(AssertSize<RegisterState, REGISTER_STATE_SIZE>());
+#endif
 
 inline void copy_kernel_registers_into_ptrace_registers(PtraceRegisters& ptrace_regs, const RegisterState& kernel_regs)
 {"
afcfea20015d59a5776ed644ad4c3b2a008fefc6,2020-06-25 19:21:47,Linus Groh,"libjs: Handle ""receiver"" argument in Reflect.{get,set}()",False,"Handle ""receiver"" argument in Reflect.{get,set}()",libjs,"diff --git a/Libraries/LibJS/Runtime/Object.cpp b/Libraries/LibJS/Runtime/Object.cpp
index 0624840eff31..0b87bc57fde4 100644
--- a/Libraries/LibJS/Runtime/Object.cpp
+++ b/Libraries/LibJS/Runtime/Object.cpp
@@ -152,7 +152,7 @@ bool Object::prevent_extensions()
     return true;
 }
 
-Value Object::get_own_property(const Object& this_object, PropertyName property_name) const
+Value Object::get_own_property(const Object& this_object, PropertyName property_name, Value receiver) const
 {
     Value value_here;
 
@@ -170,7 +170,7 @@ Value Object::get_own_property(const Object& this_object, PropertyName property_
 
     ASSERT(!value_here.is_empty());
     if (value_here.is_accessor()) {
-        return value_here.as_accessor().call_getter(Value(const_cast<Object*>(this)));
+        return value_here.as_accessor().call_getter(receiver);
     }
     if (value_here.is_native_property())
         return call_native_property_getter(const_cast<Object*>(&this_object), value_here);
@@ -605,7 +605,7 @@ Value Object::get_by_index(u32 property_index) const
     return {};
 }
 
-Value Object::get(PropertyName property_name) const
+Value Object::get(PropertyName property_name, Value receiver) const
 {
     if (property_name.is_number())
         return get_by_index(property_name.as_number());
@@ -617,7 +617,9 @@ Value Object::get(PropertyName property_name) const
 
     const Object* object = this;
     while (object) {
-        auto value = object->get_own_property(*this, property_name);
+        if (receiver.is_empty())
+            receiver = Value(const_cast<Object*>(this));
+        auto value = object->get_own_property(*this, property_name, receiver);
         if (interpreter().exception())
             return {};
         if (!value.is_empty())
@@ -656,7 +658,7 @@ bool Object::put_by_index(u32 property_index, Value value)
     return put_own_property_by_index(*this, property_index, value, default_attributes, PutOwnPropertyMode::Put);
 }
 
-bool Object::put(PropertyName property_name, Value value)
+bool Object::put(PropertyName property_name, Value value, Value receiver)
 {
     if (property_name.is_number())
         return put_by_index(property_name.as_number(), value);
@@ -676,7 +678,9 @@ bool Object::put(PropertyName property_name, Value value)
         if (metadata.has_value()) {
             auto value_here = object->m_storage[metadata.value().offset];
             if (value_here.is_accessor()) {
-                value_here.as_accessor().call_setter(Value(this), value);
+                if (receiver.is_empty())
+                    receiver = Value(this);
+                value_here.as_accessor().call_setter(receiver, value);
                 return true;
             }
             if (value_here.is_native_property()) {
diff --git a/Libraries/LibJS/Runtime/Object.h b/Libraries/LibJS/Runtime/Object.h
index cdc5381b0290..4cf78f822d23 100644
--- a/Libraries/LibJS/Runtime/Object.h
+++ b/Libraries/LibJS/Runtime/Object.h
@@ -84,14 +84,14 @@ class Object : public Cell {
 
     GlobalObject& global_object() const { return shape().global_object(); }
 
-    virtual Value get(PropertyName) const;
+    virtual Value get(PropertyName, Value receiver = {}) const;
 
     virtual bool has_property(PropertyName) const;
     bool has_own_property(PropertyName) const;
 
-    virtual bool put(PropertyName, Value);
+    virtual bool put(PropertyName, Value, Value receiver = {});
 
-    Value get_own_property(const Object& this_object, PropertyName) const;
+    Value get_own_property(const Object& this_object, PropertyName, Value receiver) const;
     Value get_own_properties(const Object& this_object, GetOwnPropertyMode, bool only_enumerable_properties = false) const;
     virtual Optional<PropertyDescriptor> get_own_property_descriptor(PropertyName) const;
     Value get_own_property_descriptor_object(PropertyName) const;
diff --git a/Libraries/LibJS/Runtime/ProxyObject.cpp b/Libraries/LibJS/Runtime/ProxyObject.cpp
index 2f9809c4add6..6c46dd8fa47f 100644
--- a/Libraries/LibJS/Runtime/ProxyObject.cpp
+++ b/Libraries/LibJS/Runtime/ProxyObject.cpp
@@ -363,7 +363,7 @@ bool ProxyObject::has_property(PropertyName name) const
     return trap_result;
 }
 
-Value ProxyObject::get(PropertyName name) const
+Value ProxyObject::get(PropertyName name, Value) const
 {
     if (m_is_revoked) {
         interpreter().throw_exception<TypeError>(ErrorType::ProxyRevoked);
@@ -395,7 +395,7 @@ Value ProxyObject::get(PropertyName name) const
     return trap_result;
 }
 
-bool ProxyObject::put(PropertyName name, Value value)
+bool ProxyObject::put(PropertyName name, Value value, Value)
 {
     if (m_is_revoked) {
         interpreter().throw_exception<TypeError>(ErrorType::ProxyRevoked);
diff --git a/Libraries/LibJS/Runtime/ProxyObject.h b/Libraries/LibJS/Runtime/ProxyObject.h
index ce8c3ef69d39..f1b2c7bb7afd 100644
--- a/Libraries/LibJS/Runtime/ProxyObject.h
+++ b/Libraries/LibJS/Runtime/ProxyObject.h
@@ -50,8 +50,8 @@ class ProxyObject : public Object {
     virtual Optional<PropertyDescriptor> get_own_property_descriptor(PropertyName) const override;
     virtual bool define_property(const FlyString& property_name, const Object& descriptor, bool throw_exceptions = true) override;
     virtual bool has_property(PropertyName name) const override;
-    virtual Value get(PropertyName name) const override;
-    virtual bool put(PropertyName name, Value value) override;
+    virtual Value get(PropertyName name, Value receiver) const override;
+    virtual bool put(PropertyName name, Value value, Value receiver) override;
     virtual Value delete_property(PropertyName name) override;
 
     void revoke() { m_is_revoked = true; }
diff --git a/Libraries/LibJS/Runtime/ReflectObject.cpp b/Libraries/LibJS/Runtime/ReflectObject.cpp
index b013591876e0..01a0936c8af6 100644
--- a/Libraries/LibJS/Runtime/ReflectObject.cpp
+++ b/Libraries/LibJS/Runtime/ReflectObject.cpp
@@ -178,14 +178,16 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::delete_property)
 
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::get)
 {
-    // FIXME: There's a third argument, receiver, for getters - use it once we have those.
     auto* target = get_target_object_from(interpreter, ""get"");
     if (!target)
         return {};
     auto property_key = interpreter.argument(1).to_string(interpreter);
     if (interpreter.exception())
         return {};
-    return target->get(property_key).value_or(js_undefined());
+    Value receiver = {};
+    if (interpreter.argument_count() > 2)
+        receiver = interpreter.argument(2);
+    return target->get(property_key, receiver).value_or(js_undefined());
 }
 
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::get_own_property_descriptor)
@@ -244,7 +246,6 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::prevent_extensions)
 
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::set)
 {
-    // FIXME: There's a fourth argument, receiver, for setters - use it once we have those.
     auto* target = get_target_object_from(interpreter, ""set"");
     if (!target)
         return {};
@@ -252,7 +253,10 @@ JS_DEFINE_NATIVE_FUNCTION(ReflectObject::set)
     if (interpreter.exception())
         return {};
     auto value = interpreter.argument(2);
-    return Value(target->put(property_key, value));
+    Value receiver = {};
+    if (interpreter.argument_count() > 3)
+        receiver = interpreter.argument(3);
+    return Value(target->put(property_key, value, receiver));
 }
 
 JS_DEFINE_NATIVE_FUNCTION(ReflectObject::set_prototype_of)
diff --git a/Libraries/LibJS/Tests/Reflect.get.js b/Libraries/LibJS/Tests/Reflect.get.js
index d3b28398f18c..0ad987132f40 100644
--- a/Libraries/LibJS/Tests/Reflect.get.js
+++ b/Libraries/LibJS/Tests/Reflect.get.js
@@ -33,6 +33,23 @@ try {
     assert(Reflect.get(new String(""foo""), 2) === ""o"");
     assert(Reflect.get(new String(""foo""), 3) === undefined);
 
+    const foo = {
+        get prop() {
+            this.getPropCalled = true;
+        }
+    };
+    const bar = {};
+    Object.setPrototypeOf(bar, foo);
+
+    assert(foo.getPropCalled === undefined);
+    assert(bar.getPropCalled === undefined);
+    Reflect.get(bar, ""prop"");
+    assert(foo.getPropCalled === undefined);
+    assert(bar.getPropCalled === true);
+    Reflect.get(bar, ""prop"", foo);
+    assert(foo.getPropCalled === true);
+    assert(bar.getPropCalled === true);
+
     console.log(""PASS"");
 } catch (e) {
     console.log(""FAIL: "" + e);
diff --git a/Libraries/LibJS/Tests/Reflect.set.js b/Libraries/LibJS/Tests/Reflect.set.js
index d498996a1682..08f095f19183 100644
--- a/Libraries/LibJS/Tests/Reflect.set.js
+++ b/Libraries/LibJS/Tests/Reflect.set.js
@@ -48,6 +48,24 @@ try {
     assert(a[3] === undefined);
     assert(a[4] === ""bar"");
 
+
+    const foo = {
+        set prop(value) {
+            this.setPropCalled = true;
+        }
+    };
+    const bar = {};
+    Object.setPrototypeOf(bar, foo);
+
+    assert(foo.setPropCalled === undefined);
+    assert(bar.setPropCalled === undefined);
+    Reflect.set(bar, ""prop"", 42);
+    assert(foo.setPropCalled === undefined);
+    assert(bar.setPropCalled === true);
+    Reflect.set(bar, ""prop"", 42, foo);
+    assert(foo.setPropCalled === true);
+    assert(bar.setPropCalled === true);
+
     console.log(""PASS"");
 } catch (e) {
     console.log(""FAIL: "" + e);"
42d19977b33e2d0c3309b299a5a24aaf513442fd,2022-02-20 19:10:26,Karol Kosek,hexeditor: Use the system-wide unsaved changes dialog,False,Use the system-wide unsaved changes dialog,hexeditor,"diff --git a/Userland/Applications/HexEditor/HexEditorWidget.cpp b/Userland/Applications/HexEditor/HexEditorWidget.cpp
index f49c5aaab772..378eb65dd475 100644
--- a/Userland/Applications/HexEditor/HexEditorWidget.cpp
+++ b/Userland/Applications/HexEditor/HexEditorWidget.cpp
@@ -89,13 +89,8 @@ HexEditorWidget::HexEditorWidget()
         if (response.is_error())
             return;
 
-        if (window()->is_modified()) {
-            auto save_document_first_result = GUI::MessageBox::show(window(), ""Save changes to current document first?"", ""Warning"", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::YesNoCancel);
-            if (save_document_first_result == GUI::Dialog::ExecResult::ExecYes)
-                m_save_action->activate();
-            if (save_document_first_result != GUI::Dialog::ExecResult::ExecNo && window()->is_modified())
-                return;
-        }
+        if (!request_close())
+            return;
 
         open_file(response.value());
     });
@@ -337,14 +332,12 @@ bool HexEditorWidget::request_close()
     if (!window()->is_modified())
         return true;
 
-    auto result = GUI::MessageBox::show(window(), ""The file has been modified. Save before closing?"", ""Save changes"", GUI::MessageBox::Type::Warning, GUI::MessageBox::InputType::YesNoCancel);
-    if (result == GUI::MessageBox::ExecCancel)
-        return false;
+    auto result = GUI::MessageBox::ask_about_unsaved_changes(window(), m_path);
     if (result == GUI::MessageBox::ExecYes) {
         m_save_action->activate();
         return !window()->is_modified();
     }
-    return true;
+    return result == GUI::MessageBox::ExecNo;
 }
 
 void HexEditorWidget::set_search_results_visible(bool visible)"
6ea3c1659ac8faa584c476a7aa880fd7c8678077,2023-02-09 00:20:43,Tim Schumacher,libgfx: Propagate errors from serializing bitmaps,False,Propagate errors from serializing bitmaps,libgfx,"diff --git a/Userland/Libraries/LibGUI/DragOperation.cpp b/Userland/Libraries/LibGUI/DragOperation.cpp
index 3e64f09375de..5f1c28b8adb5 100644
--- a/Userland/Libraries/LibGUI/DragOperation.cpp
+++ b/Userland/Libraries/LibGUI/DragOperation.cpp
@@ -84,7 +84,7 @@ void DragOperation::set_bitmap(Gfx::Bitmap const* bitmap)
     if (!m_mime_data)
         m_mime_data = Core::MimeData::construct();
     if (bitmap)
-        m_mime_data->set_data(""image/x-raw-bitmap"", bitmap->serialize_to_byte_buffer());
+        m_mime_data->set_data(""image/x-raw-bitmap"", bitmap->serialize_to_byte_buffer().release_value_but_fixme_should_propagate_errors());
 }
 void DragOperation::set_data(DeprecatedString const& data_type, DeprecatedString const& data)
 {
diff --git a/Userland/Libraries/LibGUI/Model.cpp b/Userland/Libraries/LibGUI/Model.cpp
index af17ebc9ec70..401c76b98cbe 100644
--- a/Userland/Libraries/LibGUI/Model.cpp
+++ b/Userland/Libraries/LibGUI/Model.cpp
@@ -128,7 +128,7 @@ RefPtr<Core::MimeData> Model::mime_data(ModelSelection const& selection) const
     mime_data->set_data(drag_data_type(), data_builder.to_byte_buffer());
     mime_data->set_text(text_builder.to_deprecated_string());
     if (bitmap)
-        mime_data->set_data(""image/x-raw-bitmap"", bitmap->serialize_to_byte_buffer());
+        mime_data->set_data(""image/x-raw-bitmap"", bitmap->serialize_to_byte_buffer().release_value_but_fixme_should_propagate_errors());
 
     return mime_data;
 }
diff --git a/Userland/Libraries/LibGfx/Bitmap.cpp b/Userland/Libraries/LibGfx/Bitmap.cpp
index f8bd838b22d7..c7164552493e 100644
--- a/Userland/Libraries/LibGfx/Bitmap.cpp
+++ b/Userland/Libraries/LibGfx/Bitmap.cpp
@@ -256,10 +256,9 @@ ErrorOr<NonnullRefPtr<Bitmap>> Bitmap::create_from_serialized_bytes(ReadonlyByte
     return bitmap;
 }
 
-ByteBuffer Bitmap::serialize_to_byte_buffer() const
+ErrorOr<ByteBuffer> Bitmap::serialize_to_byte_buffer() const
 {
-    // FIXME: Somehow handle possible OOM situation here.
-    auto buffer = ByteBuffer::create_uninitialized(sizeof(size_t) + 4 * sizeof(unsigned) + sizeof(BitmapFormat) + sizeof(ARGB32) * palette_size(m_format) + size_in_bytes()).release_value_but_fixme_should_propagate_errors();
+    auto buffer = TRY(ByteBuffer::create_uninitialized(sizeof(size_t) + 4 * sizeof(unsigned) + sizeof(BitmapFormat) + sizeof(ARGB32) * palette_size(m_format) + size_in_bytes()));
     DeprecatedOutputMemoryStream stream { buffer };
 
     auto write = [&]<typename T>(T value) {
@@ -271,17 +270,17 @@ ByteBuffer Bitmap::serialize_to_byte_buffer() const
     auto palette = palette_to_vector();
 
     if (!write(size_in_bytes()) || !write((unsigned)size().width()) || !write((unsigned)size().height()) || !write((unsigned)scale()) || !write(m_format) || !write((unsigned)palette.size()))
-        return {};
+        return Error::from_string_literal(""Failed to write serialized image metadata to the buffer"");
 
     for (auto& p : palette) {
         if (!write(p))
-            return {};
+            return Error::from_string_literal(""Failed to write serialized palette to the buffer"");
     }
 
     auto size = size_in_bytes();
     VERIFY(stream.remaining() == size);
     if (stream.write({ scanline(0), size }) != size)
-        return {};
+        return Error::from_string_literal(""Failed to write serialized image data to the buffer"");
 
     return buffer;
 }
diff --git a/Userland/Libraries/LibGfx/Bitmap.h b/Userland/Libraries/LibGfx/Bitmap.h
index 6d098a0cbfec..68d04f95b543 100644
--- a/Userland/Libraries/LibGfx/Bitmap.h
+++ b/Userland/Libraries/LibGfx/Bitmap.h
@@ -121,7 +121,7 @@ class Bitmap : public RefCounted<Bitmap> {
     ErrorOr<NonnullRefPtr<Gfx::Bitmap>> scaled(float sx, float sy) const;
     ErrorOr<NonnullRefPtr<Gfx::Bitmap>> cropped(Gfx::IntRect, Optional<BitmapFormat> new_bitmap_format = {}) const;
     ErrorOr<NonnullRefPtr<Gfx::Bitmap>> to_bitmap_backed_by_anonymous_buffer() const;
-    [[nodiscard]] ByteBuffer serialize_to_byte_buffer() const;
+    [[nodiscard]] ErrorOr<ByteBuffer> serialize_to_byte_buffer() const;
 
     [[nodiscard]] ShareableBitmap to_shareable_bitmap() const;"
ae1fdf299d8c92062ad53a71f614d68ce37ee1d8,2022-05-25 04:55:23,Linus Groh,libjs: Use the rounding abstract operations from Intl.NumberFormat V3,False,Use the rounding abstract operations from Intl.NumberFormat V3,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp
index a4d8ad476562..f35ed5b29e69 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
+ * Copyright (c) 2021-2022, Idan Horowitz <idan.horowitz@serenityos.org>
  * Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
  * Copyright (c) 2021, Luke Wilde <lukew@serenityos.org>
  *
@@ -10,6 +10,7 @@
 #include <AK/DateTimeLexer.h>
 #include <AK/TypeCasts.h>
 #include <AK/Variant.h>
+#include <LibJS/Runtime/AbstractOperations.h>
 #include <LibJS/Runtime/Completion.h>
 #include <LibJS/Runtime/IteratorOperations.h>
 #include <LibJS/Runtime/PropertyKey.h>
@@ -978,103 +979,282 @@ String format_seconds_string_part(u8 second, u16 millisecond, u16 microsecond, u
     return String::formatted(""{}.{}"", seconds_string, fraction_string);
 }
 
-// NOTE: We have two variants of this function, one using doubles and one using BigInts - most of the time
+// 13.28 GetUnsignedRoundingMode ( roundingMode, isNegative ), https://tc39.es/proposal-temporal/#sec-temporal-getunsignedroundingmode
+UnsignedRoundingMode get_unsigned_rounding_mode(StringView rounding_mode, bool is_negative)
+{
+    // 1. If isNegative is true, return the specification type in the third column of Table 14 where the first column is roundingMode and the second column is ""negative"".
+    if (is_negative) {
+        if (rounding_mode == ""ceil""sv)
+            return UnsignedRoundingMode::Zero;
+        if (rounding_mode == ""floor""sv)
+            return UnsignedRoundingMode::Infinity;
+        if (rounding_mode == ""expand""sv)
+            return UnsignedRoundingMode::Infinity;
+        if (rounding_mode == ""trunc""sv)
+            return UnsignedRoundingMode::Zero;
+        if (rounding_mode == ""halfCeil""sv)
+            return UnsignedRoundingMode::HalfZero;
+        if (rounding_mode == ""halfFloor""sv)
+            return UnsignedRoundingMode::HalfInfinity;
+        if (rounding_mode == ""halfExpand""sv)
+            return UnsignedRoundingMode::HalfInfinity;
+        if (rounding_mode == ""halfTrunc""sv)
+            return UnsignedRoundingMode::HalfZero;
+        if (rounding_mode == ""halfEven""sv)
+            return UnsignedRoundingMode::HalfEven;
+        VERIFY_NOT_REACHED();
+    }
+    // 2. Else, return the specification type in the third column of Table 14 where the first column is roundingMode and the second column is ""positive"".
+    else {
+        if (rounding_mode == ""ceil""sv)
+            return UnsignedRoundingMode::Infinity;
+        if (rounding_mode == ""floor""sv)
+            return UnsignedRoundingMode::Zero;
+        if (rounding_mode == ""expand""sv)
+            return UnsignedRoundingMode::Infinity;
+        if (rounding_mode == ""trunc""sv)
+            return UnsignedRoundingMode::Zero;
+        if (rounding_mode == ""halfCeil""sv)
+            return UnsignedRoundingMode::HalfInfinity;
+        if (rounding_mode == ""halfFloor""sv)
+            return UnsignedRoundingMode::HalfZero;
+        if (rounding_mode == ""halfExpand""sv)
+            return UnsignedRoundingMode::HalfInfinity;
+        if (rounding_mode == ""halfTrunc""sv)
+            return UnsignedRoundingMode::HalfZero;
+        if (rounding_mode == ""halfEven""sv)
+            return UnsignedRoundingMode::HalfEven;
+        VERIFY_NOT_REACHED();
+    }
+}
+
+// NOTE: We have two variants of these functions, one using doubles and one using BigInts - most of the time
 // doubles will be fine, but take care to choose the right one. The spec is not very clear about this, as
 // it uses mathematical values which can be arbitrarily (but not infinitely) large.
 // Incidentally V8's Temporal implementation does the same :^)
 
-// 13.29 RoundNumberToIncrement ( x, increment, roundingMode ), https://tc39.es/proposal-temporal/#sec-temporal-roundnumbertoincrement
-i64 round_number_to_increment(double x, u64 increment, StringView rounding_mode)
+// 13.29 ApplyUnsignedRoundingMode ( x, r1, r2, unsignedRoundingMode ), https://tc39.es/proposal-temporal/#sec-temporal-applyunsignedroundingmode
+double apply_unsigned_rounding_mode(double x, double r1, double r2, Optional<UnsignedRoundingMode> const& unsigned_rounding_mode)
+{
+    // 1. If x is equal to r1, return r1.
+    if (x == r1)
+        return r1;
+
+    // 2. Assert: r1 < x < r2.
+    VERIFY(r1 < x && x < r2);
+
+    // 3. Assert: unsignedRoundingMode is not undefined.
+    VERIFY(unsigned_rounding_mode.has_value());
+
+    // 4. If unsignedRoundingMode is zero, return r1.
+    if (unsigned_rounding_mode == UnsignedRoundingMode::Zero)
+        return r1;
+
+    // 5. If unsignedRoundingMode is infinity, return r2.
+    if (unsigned_rounding_mode == UnsignedRoundingMode::Infinity)
+        return r2;
+
+    // 6. Let d1 be x – r1.
+    auto d1 = x - r1;
+
+    // 7. Let d2 be r2 – x.
+    auto d2 = r2 - x;
+
+    // 8. If d1 < d2, return r1.
+    if (d1 < d2)
+        return r1;
+
+    // 9. If d2 < d1, return r2.
+    if (d2 < d1)
+        return r2;
+
+    // 10. Assert: d1 is equal to d2.
+    VERIFY(d1 == d2);
+
+    // 11. If unsignedRoundingMode is half-zero, return r1.
+    if (unsigned_rounding_mode == UnsignedRoundingMode::HalfZero)
+        return r1;
+
+    // 12. If unsignedRoundingMode is half-infinity, return r2.
+    if (unsigned_rounding_mode == UnsignedRoundingMode::HalfInfinity)
+        return r2;
+
+    // 13. Assert: unsignedRoundingMode is half-even.
+    VERIFY(unsigned_rounding_mode == UnsignedRoundingMode::HalfEven);
+
+    // 14. Let cardinality be (r1 / (r2 – r1)) modulo 2.
+    auto cardinality = modulo((r1 / (r2 - r1)), 2);
+
+    // 15. If cardinality is 0, return r1.
+    if (cardinality == 0)
+        return r1;
+
+    // 16. Return r2.
+    return r2;
+}
+
+// 13.29 ApplyUnsignedRoundingMode ( x, r1, r2, unsignedRoundingMode ), https://tc39.es/proposal-temporal/#sec-temporal-applyunsignedroundingmode
+Crypto::SignedBigInteger apply_unsigned_rounding_mode(Crypto::SignedDivisionResult const& x, Crypto::SignedBigInteger const& r1, Crypto::SignedBigInteger const& r2, Optional<UnsignedRoundingMode> const& unsigned_rounding_mode, Crypto::UnsignedBigInteger const& increment)
+{
+    // 1. If x is equal to r1, return r1.
+    if (x.quotient == r1 && x.remainder.unsigned_value().is_zero())
+        return r1;
+
+    // 2. Assert: r1 < x < r2.
+    // NOTE: Skipped for the sake of performance
+
+    // 3. Assert: unsignedRoundingMode is not undefined.
+    VERIFY(unsigned_rounding_mode.has_value());
+
+    // 4. If unsignedRoundingMode is zero, return r1.
+    if (unsigned_rounding_mode == UnsignedRoundingMode::Zero)
+        return r1;
+
+    // 5. If unsignedRoundingMode is infinity, return r2.
+    if (unsigned_rounding_mode == UnsignedRoundingMode::Infinity)
+        return r2;
+
+    // 6. Let d1 be x – r1.
+    auto d1 = x.remainder.unsigned_value();
+
+    // 7. Let d2 be r2 – x.
+    auto d2 = increment.minus(x.remainder.unsigned_value());
+
+    // 8. If d1 < d2, return r1.
+    if (d1 < d2)
+        return r1;
+
+    // 9. If d2 < d1, return r2.
+    if (d2 < d1)
+        return r2;
+
+    // 10. Assert: d1 is equal to d2.
+    // NOTE: Skipped for the sake of performance
+
+    // 11. If unsignedRoundingMode is half-zero, return r1.
+    if (unsigned_rounding_mode == UnsignedRoundingMode::HalfZero)
+        return r1;
+
+    // 12. If unsignedRoundingMode is half-infinity, return r2.
+    if (unsigned_rounding_mode == UnsignedRoundingMode::HalfInfinity)
+        return r2;
+
+    // 13. Assert: unsignedRoundingMode is half-even.
+    VERIFY(unsigned_rounding_mode == UnsignedRoundingMode::HalfEven);
+
+    // 14. Let cardinality be (r1 / (r2 – r1)) modulo 2.
+    auto cardinality = modulo(r1.divided_by(r2.minus(r1)).quotient, ""2""_bigint);
+
+    // 15. If cardinality is 0, return r1.
+    if (cardinality.unsigned_value().is_zero())
+        return r1;
+
+    // 16. Return r2.
+    return r2;
+}
+
+// 13.30 RoundNumberToIncrement ( x, increment, roundingMode ), https://tc39.es/proposal-temporal/#sec-temporal-roundnumbertoincrement
+double round_number_to_increment(double x, u64 increment, StringView rounding_mode)
 {
-    // 1. Assert: x and increment are mathematical values.
-    // 2. Assert: roundingMode is ""ceil"", ""floor"", ""trunc"", or ""halfExpand"".
     VERIFY(rounding_mode == ""ceil""sv || rounding_mode == ""floor""sv || rounding_mode == ""trunc""sv || rounding_mode == ""halfExpand""sv);
 
-    // 3. Let quotient be x / increment.
-    auto quotient = x / (double)increment;
+    // 1. Let quotient be x / increment.
+    auto quotient = x / static_cast<double>(increment);
 
-    double rounded;
+    bool is_negative;
 
-    // 4. If roundingMode is ""ceil"", then
-    if (rounding_mode == ""ceil""sv) {
-        // a. Let rounded be -floor(-quotient).
-        rounded = -floor(-quotient);
-    }
-    // 5. Else if roundingMode is ""floor"", then
-    else if (rounding_mode == ""floor""sv) {
-        // a. Let rounded be floor(quotient).
-        rounded = floor(quotient);
-    }
-    // 6. Else if roundingMode is ""trunc"", then
-    else if (rounding_mode == ""trunc""sv) {
-        // a. Let rounded be RoundTowardsZero(quotient).
-        rounded = trunc(quotient);
+    // 2. If quotient < 0, then
+    if (quotient < 0) {
+        // a. Let isNegative be true.
+        is_negative = true;
+
+        // b. Set quotient to -quotient.
+        quotient = -quotient;
     }
-    // 7. Else,
+    // 3. Else,
     else {
-        // a. Let rounded be ! RoundHalfAwayFromZero(quotient).
-        rounded = round(quotient);
+        // a. Let isNegative be false.
+        is_negative = false;
     }
 
-    // 8. Return rounded × increment.
-    return (i64)rounded * (i64)increment;
+    // 4. Let unsignedRoundingMode be GetUnsignedRoundingMode(roundingMode, isNegative).
+    auto unsigned_rounding_mode = get_unsigned_rounding_mode(rounding_mode, is_negative);
+
+    // 5. Let r1 be the largest integer such that r1 ≤ quotient.
+    auto r1 = floor(quotient);
+
+    // 6. Let r2 be the smallest integer such that r2 > quotient.
+    auto r2 = ceil(quotient);
+    if (quotient == r2)
+        r2++;
+
+    // 7. Let rounded be ApplyUnsignedRoundingMode(quotient, r1, r2, unsignedRoundingMode).
+    auto rounded = apply_unsigned_rounding_mode(quotient, r1, r2, unsigned_rounding_mode);
+
+    // 8. If isNegative is true, set rounded to -rounded.
+    if (is_negative)
+        rounded = -rounded;
+
+    // 9. Return rounded × increment.
+    return rounded * static_cast<double>(increment);
 }
 
-// 13.29 RoundNumberToIncrement ( x, increment, roundingMode ), https://tc39.es/proposal-temporal/#sec-temporal-roundnumbertoincrement
-BigInt* round_number_to_increment(GlobalObject& global_object, BigInt const& x, u64 increment, StringView rounding_mode)
+// 13.30 RoundNumberToIncrement ( x, increment, roundingMode ), https://tc39.es/proposal-temporal/#sec-temporal-roundnumbertoincrement
+Crypto::SignedBigInteger round_number_to_increment(Crypto::SignedBigInteger const& x, u64 increment, StringView rounding_mode)
 {
-    auto& heap = global_object.heap();
-
-    // 1. Assert: x and increment are mathematical values.
-    // 2. Assert: roundingMode is ""ceil"", ""floor"", ""trunc"", or ""halfExpand"".
     VERIFY(rounding_mode == ""ceil""sv || rounding_mode == ""floor""sv || rounding_mode == ""trunc""sv || rounding_mode == ""halfExpand""sv);
 
     // OPTIMIZATION: If the increment is 1 the number is always rounded
     if (increment == 1)
-        return js_bigint(heap, x.big_integer());
+        return x;
 
     auto increment_big_int = Crypto::UnsignedBigInteger::create_from(increment);
-    // 3. Let quotient be x / increment.
-    auto division_result = x.big_integer().divided_by(increment_big_int);
+
+    // 1. Let quotient be x / increment.
+    auto division_result = x.divided_by(increment_big_int);
 
     // OPTIMIZATION: If there's no remainder the number is already rounded
-    if (division_result.remainder == Crypto::UnsignedBigInteger { 0 })
-        return js_bigint(heap, x.big_integer());
-
-    Crypto::SignedBigInteger rounded = move(division_result.quotient);
-    // 4. If roundingMode is ""ceil"", then
-    if (rounding_mode == ""ceil""sv) {
-        // a. Let rounded be -floor(-quotient).
-        if (!division_result.remainder.is_negative())
-            rounded = rounded.plus(Crypto::UnsignedBigInteger { 1 });
-    }
-    // 5. Else if roundingMode is ""floor"", then
-    else if (rounding_mode == ""floor""sv) {
-        // a. Let rounded be floor(quotient).
-        if (division_result.remainder.is_negative())
-            rounded = rounded.minus(Crypto::UnsignedBigInteger { 1 });
-    }
-    // 6. Else if roundingMode is ""trunc"", then
-    else if (rounding_mode == ""trunc""sv) {
-        // a. Let rounded be the RoundTowardsZero(quotient).
-        // NOTE: This is a no-op
+    if (division_result.remainder.unsigned_value().is_zero())
+        return x;
+
+    bool is_negative;
+
+    // 2. If quotient < 0, then
+    if (division_result.quotient.is_negative()) {
+        // a. Let isNegative be true.
+        is_negative = true;
+
+        // b. Set quotient to -quotient.
+        division_result.quotient.negate();
+        division_result.remainder.negate();
     }
-    // 7. Else,
+    // 3. Else,
     else {
-        // a. Let rounded be ! RoundHalfAwayFromZero(quotient).
-        if (division_result.remainder.multiplied_by(Crypto::UnsignedBigInteger { 2 }).unsigned_value() >= increment_big_int) {
-            if (division_result.remainder.is_negative())
-                rounded = rounded.minus(Crypto::UnsignedBigInteger { 1 });
-            else
-                rounded = rounded.plus(Crypto::UnsignedBigInteger { 1 });
-        }
+        // a. Let isNegative be false.
+        is_negative = false;
     }
 
-    // 8. Return rounded × increment.
-    return js_bigint(heap, rounded.multiplied_by(increment_big_int));
+    // 4. Let unsignedRoundingMode be GetUnsignedRoundingMode(roundingMode, isNegative).
+    auto unsigned_rounding_mode = get_unsigned_rounding_mode(rounding_mode, is_negative);
+
+    // 5. Let r1 be the largest integer such that r1 ≤ quotient.
+    auto r1 = division_result.quotient;
+
+    // 6. Let r2 be the smallest integer such that r2 > quotient.
+    auto r2 = division_result.quotient.plus(""1""_bigint);
+
+    // 7. Let rounded be ApplyUnsignedRoundingMode(quotient, r1, r2, unsignedRoundingMode).
+    auto rounded = apply_unsigned_rounding_mode(division_result, r1, r2, unsigned_rounding_mode, increment_big_int);
+
+    // 8. If isNegative is true, set rounded to -rounded.
+    if (is_negative)
+        rounded.negate();
+
+    // 9. Return rounded × increment.
+    return rounded.multiplied_by(increment_big_int);
 }
 
-// 13.31 ParseISODateTime ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parseisodatetime
+// 13.32 ParseISODateTime ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parseisodatetime
 ThrowCompletionOr<ISODateTime> parse_iso_date_time(GlobalObject& global_object, ParseResult const& parse_result)
 {
     auto& vm = global_object.vm();
@@ -1199,7 +1379,7 @@ ThrowCompletionOr<ISODateTime> parse_iso_date_time(GlobalObject& global_object,
     return ISODateTime { .year = year, .month = month, .day = day, .hour = hour, .minute = minute, .second = second, .millisecond = millisecond, .microsecond = microsecond, .nanosecond = nanosecond, .calendar = Optional<String>(move(calendar_part)) };
 }
 
-// 13.32 ParseTemporalInstantString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporalinstantstring
+// 13.33 ParseTemporalInstantString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporalinstantstring
 ThrowCompletionOr<TemporalInstant> parse_temporal_instant_string(GlobalObject& global_object, String const& iso_string)
 {
     auto& vm = global_object.vm();
@@ -1235,7 +1415,7 @@ ThrowCompletionOr<TemporalInstant> parse_temporal_instant_string(GlobalObject& g
     return TemporalInstant { .year = result.year, .month = result.month, .day = result.day, .hour = result.hour, .minute = result.minute, .second = result.second, .millisecond = result.millisecond, .microsecond = result.microsecond, .nanosecond = result.nanosecond, .time_zone_offset = move(offset_string) };
 }
 
-// 13.33 ParseTemporalZonedDateTimeString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporalzoneddatetimestring
+// 13.34 ParseTemporalZonedDateTimeString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporalzoneddatetimestring
 ThrowCompletionOr<TemporalZonedDateTime> parse_temporal_zoned_date_time_string(GlobalObject& global_object, String const& iso_string)
 {
     auto& vm = global_object.vm();
@@ -1261,7 +1441,7 @@ ThrowCompletionOr<TemporalZonedDateTime> parse_temporal_zoned_date_time_string(G
     return TemporalZonedDateTime { .date_time = move(result), .time_zone = move(time_zone_result) };
 }
 
-// 13.34 ParseTemporalCalendarString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporalcalendarstring
+// 13.35 ParseTemporalCalendarString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporalcalendarstring
 ThrowCompletionOr<String> parse_temporal_calendar_string(GlobalObject& global_object, String const& iso_string)
 {
     auto& vm = global_object.vm();
@@ -1288,7 +1468,7 @@ ThrowCompletionOr<String> parse_temporal_calendar_string(GlobalObject& global_ob
     return id_part.value();
 }
 
-// 13.35 ParseTemporalDateString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporaldatestring
+// 13.36 ParseTemporalDateString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporaldatestring
 ThrowCompletionOr<TemporalDate> parse_temporal_date_string(GlobalObject& global_object, String const& iso_string)
 {
     // 1. Let parts be ? ParseTemporalDateTimeString(isoString).
@@ -1298,7 +1478,7 @@ ThrowCompletionOr<TemporalDate> parse_temporal_date_string(GlobalObject& global_
     return TemporalDate { .year = parts.year, .month = parts.month, .day = parts.day, .calendar = move(parts.calendar) };
 }
 
-// 13.36 ParseTemporalDateTimeString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporaldatetimestring
+// 13.37 ParseTemporalDateTimeString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporaldatetimestring
 ThrowCompletionOr<ISODateTime> parse_temporal_date_time_string(GlobalObject& global_object, String const& iso_string)
 {
     auto& vm = global_object.vm();
@@ -1322,7 +1502,7 @@ ThrowCompletionOr<ISODateTime> parse_temporal_date_time_string(GlobalObject& glo
     return parse_iso_date_time(global_object, *parse_result);
 }
 
-// 13.37 ParseTemporalDurationString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporaldurationstring
+// 13.38 ParseTemporalDurationString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporaldurationstring
 ThrowCompletionOr<DurationRecord> parse_temporal_duration_string(GlobalObject& global_object, String const& iso_string)
 {
     auto& vm = global_object.vm();
@@ -1462,7 +1642,7 @@ ThrowCompletionOr<DurationRecord> parse_temporal_duration_string(GlobalObject& g
     return create_duration_record(global_object, years * factor, months * factor, weeks * factor, days * factor, hours * factor, floor(minutes) * factor, floor(seconds) * factor, floor(milliseconds) * factor, floor(microseconds) * factor, floor(nanoseconds) * factor);
 }
 
-// 13.38 ParseTemporalMonthDayString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporalmonthdaystring
+// 13.39 ParseTemporalMonthDayString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporalmonthdaystring
 ThrowCompletionOr<TemporalMonthDay> parse_temporal_month_day_string(GlobalObject& global_object, String const& iso_string)
 {
     auto& vm = global_object.vm();
@@ -1498,7 +1678,7 @@ ThrowCompletionOr<TemporalMonthDay> parse_temporal_month_day_string(GlobalObject
     return TemporalMonthDay { .year = year, .month = result.month, .day = result.day, .calendar = move(result.calendar) };
 }
 
-// 13.39 ParseTemporalRelativeToString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporalrelativetostring
+// 13.40 ParseTemporalRelativeToString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporalrelativetostring
 ThrowCompletionOr<TemporalZonedDateTime> parse_temporal_relative_to_string(GlobalObject& global_object, String const& iso_string)
 {
     auto& vm = global_object.vm();
@@ -1547,7 +1727,7 @@ ThrowCompletionOr<TemporalZonedDateTime> parse_temporal_relative_to_string(Globa
     return TemporalZonedDateTime { .date_time = move(result), .time_zone = { .z = z, .offset_string = move(offset_string), .name = move(time_zone) } };
 }
 
-// 13.40 ParseTemporalTimeString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporaltimestring
+// 13.41 ParseTemporalTimeString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporaltimestring
 ThrowCompletionOr<TemporalTime> parse_temporal_time_string(GlobalObject& global_object, String const& iso_string)
 {
     auto& vm = global_object.vm();
@@ -1576,7 +1756,7 @@ ThrowCompletionOr<TemporalTime> parse_temporal_time_string(GlobalObject& global_
     return TemporalTime { .hour = result.hour, .minute = result.minute, .second = result.second, .millisecond = result.millisecond, .microsecond = result.microsecond, .nanosecond = result.nanosecond, .calendar = move(result.calendar) };
 }
 
-// 13.41 ParseTemporalTimeZoneString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporaltimezonestring
+// 13.42 ParseTemporalTimeZoneString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporaltimezonestring
 ThrowCompletionOr<TemporalTimeZone> parse_temporal_time_zone_string(GlobalObject& global_object, String const& iso_string)
 {
     auto& vm = global_object.vm();
@@ -1619,7 +1799,7 @@ ThrowCompletionOr<TemporalTimeZone> parse_temporal_time_zone_string(GlobalObject
     return TemporalTimeZone { .z = false, .offset_string = Optional<String>(move(offset_string)), .name = Optional<String>(move(name)) };
 }
 
-// 13.42 ParseTemporalYearMonthString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporalyearmonthstring
+// 13.43 ParseTemporalYearMonthString ( isoString ), https://tc39.es/proposal-temporal/#sec-temporal-parsetemporalyearmonthstring
 ThrowCompletionOr<TemporalYearMonth> parse_temporal_year_month_string(GlobalObject& global_object, String const& iso_string)
 {
     auto& vm = global_object.vm();
@@ -1646,7 +1826,7 @@ ThrowCompletionOr<TemporalYearMonth> parse_temporal_year_month_string(GlobalObje
     return TemporalYearMonth { .year = result.year, .month = result.month, .day = result.day, .calendar = move(result.calendar) };
 }
 
-// 13.43 ToPositiveInteger ( argument ), https://tc39.es/proposal-temporal/#sec-temporal-topositiveinteger
+// 13.44 ToPositiveInteger ( argument ), https://tc39.es/proposal-temporal/#sec-temporal-topositiveinteger
 ThrowCompletionOr<double> to_positive_integer(GlobalObject& global_object, Value argument)
 {
     auto& vm = global_object.vm();
@@ -1664,7 +1844,7 @@ ThrowCompletionOr<double> to_positive_integer(GlobalObject& global_object, Value
     return integer;
 }
 
-// 13.46 PrepareTemporalFields ( fields, fieldNames, requiredFields ), https://tc39.es/proposal-temporal/#sec-temporal-preparetemporalfields
+// 13.47 PrepareTemporalFields ( fields, fieldNames, requiredFields ), https://tc39.es/proposal-temporal/#sec-temporal-preparetemporalfields
 ThrowCompletionOr<Object*> prepare_temporal_fields(GlobalObject& global_object, Object const& fields, Vector<String> const& field_names, Vector<StringView> const& required_fields)
 {
     auto& vm = global_object.vm();
@@ -1715,7 +1895,7 @@ ThrowCompletionOr<Object*> prepare_temporal_fields(GlobalObject& global_object,
     return result;
 }
 
-// 13.47 PreparePartialTemporalFields ( fields, fieldNames ), https://tc39.es/proposal-temporal/#sec-temporal-preparepartialtemporalfields
+// 13.48 PreparePartialTemporalFields ( fields, fieldNames ), https://tc39.es/proposal-temporal/#sec-temporal-preparepartialtemporalfields
 ThrowCompletionOr<Object*> prepare_partial_temporal_fields(GlobalObject& global_object, Object const& fields, Vector<String> const& field_names)
 {
     auto& vm = global_object.vm();
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.h b/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.h
index 2e173b25f9cf..4217814adcd1 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.h
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/AbstractOperations.h
@@ -27,6 +27,14 @@ enum class DifferenceOperation {
     Until,
 };
 
+enum class UnsignedRoundingMode {
+    HalfEven,
+    HalfInfinity,
+    HalfZero,
+    Infinity,
+    Zero,
+};
+
 enum class OptionType {
     Boolean,
     String,
@@ -135,8 +143,11 @@ ThrowCompletionOr<void> reject_object_with_calendar_or_time_zone(GlobalObject&,
 String format_seconds_string_part(u8 second, u16 millisecond, u16 microsecond, u16 nanosecond, Variant<StringView, u8> const& precision);
 double sign(double);
 double sign(Crypto::SignedBigInteger const&);
-i64 round_number_to_increment(double, u64 increment, StringView rounding_mode);
-BigInt* round_number_to_increment(GlobalObject&, BigInt const&, u64 increment, StringView rounding_mode);
+UnsignedRoundingMode get_unsigned_rounding_mode(StringView rounding_mode, bool is_negative);
+double apply_unsigned_rounding_mode(double x, double r1, double r2, Optional<UnsignedRoundingMode> const&);
+Crypto::SignedBigInteger apply_unsigned_rounding_mode(Crypto::SignedDivisionResult const&, Crypto::SignedBigInteger const& r1, Crypto::SignedBigInteger const& r2, Optional<UnsignedRoundingMode> const&, Crypto::UnsignedBigInteger const& increment);
+double round_number_to_increment(double, u64 increment, StringView rounding_mode);
+Crypto::SignedBigInteger round_number_to_increment(Crypto::SignedBigInteger const&, u64 increment, StringView rounding_mode);
 ThrowCompletionOr<ISODateTime> parse_iso_date_time(GlobalObject&, ParseResult const& parse_result);
 ThrowCompletionOr<TemporalInstant> parse_temporal_instant_string(GlobalObject&, String const& iso_string);
 ThrowCompletionOr<TemporalZonedDateTime> parse_temporal_zoned_date_time_string(GlobalObject&, String const& iso_string);
@@ -153,7 +164,7 @@ ThrowCompletionOr<double> to_positive_integer(GlobalObject&, Value argument);
 ThrowCompletionOr<Object*> prepare_temporal_fields(GlobalObject&, Object const& fields, Vector<String> const& field_names, Vector<StringView> const& required_fields);
 ThrowCompletionOr<Object*> prepare_partial_temporal_fields(GlobalObject&, Object const& fields, Vector<String> const& field_names);
 
-// 13.44 ToIntegerThrowOnInfinity ( argument ), https://tc39.es/proposal-temporal/#sec-temporal-tointegerthrowoninfinity
+// 13.45 ToIntegerThrowOnInfinity ( argument ), https://tc39.es/proposal-temporal/#sec-temporal-tointegerthrowoninfinity
 template<typename... Args>
 ThrowCompletionOr<double> to_integer_throw_on_infinity(GlobalObject& global_object, Value argument, ErrorType error_type, Args... args)
 {
@@ -172,7 +183,7 @@ ThrowCompletionOr<double> to_integer_throw_on_infinity(GlobalObject& global_obje
     return integer;
 }
 
-// 13.45 ToIntegerWithoutRounding ( argument ), https://tc39.es/proposal-temporal/#sec-temporal-tointegerwithoutrounding
+// 13.46 ToIntegerWithoutRounding ( argument ), https://tc39.es/proposal-temporal/#sec-temporal-tointegerwithoutrounding
 template<typename... Args>
 ThrowCompletionOr<double> to_integer_without_rounding(GlobalObject& global_object, Value argument, ErrorType error_type, Args... args)
 {
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/Duration.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/Duration.cpp
index 7024a72388ec..daebd1d4e17f 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/Duration.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/Duration.cpp
@@ -1278,8 +1278,8 @@ ThrowCompletionOr<RoundedDuration> round_duration(GlobalObject& global_object, d
         // y. Let fractionalYears be years + days / abs(oneYearDays).
         auto fractional_years = years + days / fabs(one_year_days);
 
-        // z. Set years to ! RoundNumberToIncrement(fractionalYears, increment, roundingMode).
-        years = (double)round_number_to_increment(fractional_years, increment, rounding_mode);
+        // z. Set years to RoundNumberToIncrement(fractionalYears, increment, roundingMode).
+        years = round_number_to_increment(fractional_years, increment, rounding_mode);
 
         // aa. Set remainder to fractionalYears - years.
         remainder = fractional_years - years;
@@ -1353,8 +1353,8 @@ ThrowCompletionOr<RoundedDuration> round_duration(GlobalObject& global_object, d
         // o. Let fractionalMonths be months + days / abs(oneMonthDays).
         auto fractional_months = months + days / fabs(one_month_days);
 
-        // p. Set months to ! RoundNumberToIncrement(fractionalMonths, increment, roundingMode).
-        months = (double)round_number_to_increment(fractional_months, increment, rounding_mode);
+        // p. Set months to RoundNumberToIncrement(fractionalMonths, increment, roundingMode).
+        months = round_number_to_increment(fractional_months, increment, rounding_mode);
 
         // q. Set remainder to fractionalMonths - months.
         remainder = fractional_months - months;
@@ -1403,8 +1403,8 @@ ThrowCompletionOr<RoundedDuration> round_duration(GlobalObject& global_object, d
         // g. Let fractionalWeeks be weeks + days / abs(oneWeekDays).
         auto fractional_weeks = weeks + days / fabs(one_week_days);
 
-        // h. Set weeks to ! RoundNumberToIncrement(fractionalWeeks, increment, roundingMode).
-        weeks = (double)round_number_to_increment(fractional_weeks, increment, rounding_mode);
+        // h. Set weeks to RoundNumberToIncrement(fractionalWeeks, increment, roundingMode).
+        weeks = round_number_to_increment(fractional_weeks, increment, rounding_mode);
 
         // i. Set remainder to fractionalWeeks - weeks.
         remainder = fractional_weeks - weeks;
@@ -1417,8 +1417,8 @@ ThrowCompletionOr<RoundedDuration> round_duration(GlobalObject& global_object, d
         // a. Let fractionalDays be days.
         auto fractional_days = days;
 
-        // b. Set days to ! RoundNumberToIncrement(days, increment, roundingMode).
-        days = (double)round_number_to_increment(days, increment, rounding_mode);
+        // b. Set days to RoundNumberToIncrement(days, increment, roundingMode).
+        days = round_number_to_increment(days, increment, rounding_mode);
 
         // c. Set remainder to fractionalDays - days.
         remainder = fractional_days - days;
@@ -1428,8 +1428,8 @@ ThrowCompletionOr<RoundedDuration> round_duration(GlobalObject& global_object, d
         // a. Let fractionalHours be (fractionalSeconds / 60 + minutes) / 60 + hours.
         auto fractional_hours = (fractional_seconds / 60 + minutes) / 60 + hours;
 
-        // b. Set hours to ! RoundNumberToIncrement(fractionalHours, increment, roundingMode).
-        hours = (double)round_number_to_increment(fractional_hours, increment, rounding_mode);
+        // b. Set hours to RoundNumberToIncrement(fractionalHours, increment, roundingMode).
+        hours = round_number_to_increment(fractional_hours, increment, rounding_mode);
 
         // c. Set remainder to fractionalHours - hours.
         remainder = fractional_hours - hours;
@@ -1446,8 +1446,8 @@ ThrowCompletionOr<RoundedDuration> round_duration(GlobalObject& global_object, d
         // a. Let fractionalMinutes be fractionalSeconds / 60 + minutes.
         auto fractional_minutes = fractional_seconds / 60 + minutes;
 
-        // b. Set minutes to ! RoundNumberToIncrement(fractionalMinutes, increment, roundingMode).
-        minutes = (double)round_number_to_increment(fractional_minutes, increment, rounding_mode);
+        // b. Set minutes to RoundNumberToIncrement(fractionalMinutes, increment, roundingMode).
+        minutes = round_number_to_increment(fractional_minutes, increment, rounding_mode);
 
         // c. Set remainder to fractionalMinutes - minutes.
         remainder = fractional_minutes - minutes;
@@ -1460,8 +1460,8 @@ ThrowCompletionOr<RoundedDuration> round_duration(GlobalObject& global_object, d
     }
     // 15. Else if unit is ""second"", then
     else if (unit == ""second""sv) {
-        // a. Set seconds to ! RoundNumberToIncrement(fractionalSeconds, increment, roundingMode).
-        seconds = (double)round_number_to_increment(fractional_seconds, increment, rounding_mode);
+        // a. Set seconds to RoundNumberToIncrement(fractionalSeconds, increment, roundingMode).
+        seconds = round_number_to_increment(fractional_seconds, increment, rounding_mode);
 
         // b. Set remainder to fractionalSeconds - seconds.
         remainder = fractional_seconds - seconds;
@@ -1476,8 +1476,8 @@ ThrowCompletionOr<RoundedDuration> round_duration(GlobalObject& global_object, d
         // a. Let fractionalMilliseconds be nanoseconds × 10^-6 + microseconds × 10^-3 + milliseconds.
         auto fractional_milliseconds = nanoseconds * 0.000001 + microseconds * 0.001 + milliseconds;
 
-        // b. Set milliseconds to ! RoundNumberToIncrement(fractionalMilliseconds, increment, roundingMode).
-        milliseconds = (double)round_number_to_increment(fractional_milliseconds, increment, rounding_mode);
+        // b. Set milliseconds to RoundNumberToIncrement(fractionalMilliseconds, increment, roundingMode).
+        milliseconds = round_number_to_increment(fractional_milliseconds, increment, rounding_mode);
 
         // c. Set remainder to fractionalMilliseconds - milliseconds.
         remainder = fractional_milliseconds - milliseconds;
@@ -1491,8 +1491,8 @@ ThrowCompletionOr<RoundedDuration> round_duration(GlobalObject& global_object, d
         // a. Let fractionalMicroseconds be nanoseconds × 10^-3 + microseconds.
         auto fractional_microseconds = nanoseconds * 0.001 + microseconds;
 
-        // b. Set microseconds to ! RoundNumberToIncrement(fractionalMicroseconds, increment, roundingMode).
-        microseconds = (double)round_number_to_increment(fractional_microseconds, increment, rounding_mode);
+        // b. Set microseconds to RoundNumberToIncrement(fractionalMicroseconds, increment, roundingMode).
+        microseconds = round_number_to_increment(fractional_microseconds, increment, rounding_mode);
 
         // c. Set remainder to fractionalMicroseconds - microseconds.
         remainder = fractional_microseconds - microseconds;
@@ -1508,8 +1508,8 @@ ThrowCompletionOr<RoundedDuration> round_duration(GlobalObject& global_object, d
         // b. Set remainder to nanoseconds.
         remainder = nanoseconds;
 
-        // c. Set nanoseconds to ! RoundNumberToIncrement(nanoseconds, increment, roundingMode).
-        nanoseconds = (double)round_number_to_increment(nanoseconds, increment, rounding_mode);
+        // c. Set nanoseconds to RoundNumberToIncrement(nanoseconds, increment, roundingMode).
+        nanoseconds = round_number_to_increment(nanoseconds, increment, rounding_mode);
 
         // d. Set remainder to remainder - nanoseconds.
         remainder -= nanoseconds;
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/Instant.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/Instant.cpp
index 4e3f5a2ba14d..008026ea983a 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/Instant.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/Instant.cpp
@@ -196,6 +196,8 @@ BigInt* difference_instant(GlobalObject& global_object, BigInt const& nanosecond
 // 8.5.8 RoundTemporalInstant ( ns, increment, unit, roundingMode ), https://tc39.es/proposal-temporal/#sec-temporal-roundtemporalinstant
 BigInt* round_temporal_instant(GlobalObject& global_object, BigInt const& nanoseconds, u64 increment, StringView unit, StringView rounding_mode)
 {
+    auto& vm = global_object.vm();
+
     // 1. Assert: Type(ns) is BigInt.
 
     u64 increment_nanoseconds;
@@ -233,8 +235,8 @@ BigInt* round_temporal_instant(GlobalObject& global_object, BigInt const& nanose
         increment_nanoseconds = increment;
     }
 
-    // 8. Return ! RoundNumberToIncrement(ℝ(ns), incrementNs, roundingMode).
-    return round_number_to_increment(global_object, nanoseconds, increment_nanoseconds, rounding_mode);
+    // 8. Return RoundNumberToIncrement(ℝ(ns), incrementNs, roundingMode).
+    return js_bigint(vm, round_number_to_increment(nanoseconds.big_integer(), increment_nanoseconds, rounding_mode));
 }
 
 // 8.5.9 TemporalInstantToString ( instant, timeZone, precision ), https://tc39.es/proposal-temporal/#sec-temporal-temporalinstanttostring
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainTime.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainTime.cpp
index c11d31ce0e15..0c17238d799c 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainTime.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainTime.cpp
@@ -573,7 +573,7 @@ DaysAndTime round_time(u8 hour, u8 minute, u8 second, u16 millisecond, u16 micro
         quantity = nanosecond;
     }
 
-    // 10. Let result be ! RoundNumberToIncrement(quantity, increment, roundingMode).
+    // 10. Let result be RoundNumberToIncrement(quantity, increment, roundingMode).
     auto result = round_number_to_increment(quantity, increment, rounding_mode);
 
     // If unit is ""day"", then
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/TimeZone.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/TimeZone.cpp
index 68564b057ff3..d4f6c55a8c4c 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/TimeZone.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/TimeZone.cpp
@@ -382,7 +382,7 @@ String format_iso_time_zone_offset_string(double offset_nanoseconds)
     // 1. Assert: offsetNanoseconds is an integer.
     VERIFY(trunc(offset_nanoseconds) == offset_nanoseconds);
 
-    // 2. Set offsetNanoseconds to ! RoundNumberToIncrement(offsetNanoseconds, 60 × 10^9, ""halfExpand"").
+    // 2. Set offsetNanoseconds to RoundNumberToIncrement(offsetNanoseconds, 60 × 10^9, ""halfExpand"").
     offset_nanoseconds = round_number_to_increment(offset_nanoseconds, 60000000000, ""halfExpand""sv);
 
     // 3. If offsetNanoseconds ≥ 0, let sign be ""+""; otherwise, let sign be ""-"".
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTime.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTime.cpp
index 4a2148735a64..343b6d9d6022 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTime.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTime.cpp
@@ -89,7 +89,7 @@ ThrowCompletionOr<BigInt const*> interpret_iso_date_time_offset(GlobalObject& gl
 
         // c. If matchBehaviour is match minutes, then
         if (match_behavior == MatchBehavior::MatchMinutes) {
-            // i. Let roundedCandidateNanoseconds be ! RoundNumberToIncrement(candidateNanoseconds, 60 × 10^9, ""halfExpand"").
+            // i. Let roundedCandidateNanoseconds be RoundNumberToIncrement(candidateNanoseconds, 60 × 10^9, ""halfExpand"").
             auto rounded_candidate_nanoseconds = round_number_to_increment(candidate_nanoseconds, 60000000000, ""halfExpand""sv);
 
             // ii. If roundedCandidateNanoseconds = offsetNanoseconds, then"
dc572e31fa7f44319f01fc35f35df508e03beaba,2019-08-18 15:48:17,Andreas Kling,libgui: Let GWindow::set_main_widget() take ownership of the widget,False,Let GWindow::set_main_widget() take ownership of the widget,libgui,"diff --git a/Libraries/LibGUI/GWindow.cpp b/Libraries/LibGUI/GWindow.cpp
index fca5721b7183..b71b9d4dd472 100644
--- a/Libraries/LibGUI/GWindow.cpp
+++ b/Libraries/LibGUI/GWindow.cpp
@@ -36,10 +36,7 @@ GWindow::GWindow(CObject* parent)
 GWindow::~GWindow()
 {
     all_windows.remove(this);
-    if (m_main_widget)
-        delete m_main_widget;
     hide();
-
     if (all_windows.is_empty()) {
         GApplication::the().did_delete_last_window({});
     }
@@ -465,8 +462,11 @@ void GWindow::set_main_widget(GWidget* widget)
 {
     if (m_main_widget == widget)
         return;
+    if (m_main_widget)
+        remove_child(*m_main_widget);
     m_main_widget = widget;
     if (m_main_widget) {
+        add_child(*widget);
         auto new_window_rect = rect();
         if (m_main_widget->horizontal_size_policy() == SizePolicy::Fixed)
             new_window_rect.set_width(m_main_widget->preferred_size().width());"
a91c17c0ebd2788a95b9f0e9a4c618a025added3,2019-11-26 01:51:27,Andreas Kling,ak: Add a query string component to URL,False,Add a query string component to URL,ak,"diff --git a/AK/URL.cpp b/AK/URL.cpp
index 79557cea3213..96c7afe202a4 100644
--- a/AK/URL.cpp
+++ b/AK/URL.cpp
@@ -144,6 +144,10 @@ String URL::to_string() const
         }
     }
     builder.append(m_path);
+    if (!m_query.is_empty()) {
+        builder.append('?');
+        builder.append(m_query);
+    }
     return builder.to_string();
 }
 
diff --git a/AK/URL.h b/AK/URL.h
index 57af992cbed8..cc85f1b832bd 100644
--- a/AK/URL.h
+++ b/AK/URL.h
@@ -5,6 +5,8 @@
 
 namespace AK {
 
+// FIXME: URL needs query string parsing.
+
 class URL {
 public:
     URL() {}
@@ -22,11 +24,13 @@ class URL {
     String protocol() const { return m_protocol; }
     String host() const { return m_host; }
     String path() const { return m_path; }
+    String query() const { return m_query; }
     u16 port() const { return m_port; }
 
     void set_protocol(const String& protocol) { m_protocol = protocol; }
     void set_host(const String& host) { m_host = host; }
     void set_path(const String& path) { m_path = path; }
+    void set_query(const String& query) { m_query = query; }
     void set_port(u16 port) { m_port = port; }
 
     String to_string() const;
@@ -41,6 +45,7 @@ class URL {
     String m_protocol;
     String m_host;
     String m_path;
+    String m_query;
 };
 
 }"
a768685d1644158cbb2ec83d84de9b069ed83e3f,2023-12-28 21:22:20,Jami Kettunen,meta: Add support for QEMU 8.2 audio,False,Add support for QEMU 8.2 audio,meta,"diff --git a/Meta/run.py b/Meta/run.py
index 00113b9e885f..975c742ce0e7 100755
--- a/Meta/run.py
+++ b/Meta/run.py
@@ -510,9 +510,15 @@ def setup_audio_backend(config: Configuration):
             capture_output=True,
             encoding=""utf-8"",
         ).stdout
-        if ""-audiodev id=sdl"" in qemu_audio_help:
+        if qemu_audio_help == """":
+            qemu_audio_help = run(
+                [str(config.qemu_binary), ""-audiodev"", ""help""],
+                capture_output=True,
+                encoding=""utf-8"",
+            ).stdout
+        if ""sdl"" in qemu_audio_help:
             config.audio_backend = ""sdl""
-        elif ""-audiodev id=pa"" in qemu_audio_help:
+        elif ""pa"" in qemu_audio_help:
             config.audio_backend = ""pa,timer-period=2000""
 
     if config.audio_backend is not None:"
5c240af3f779edfef32547bd295a0237deff9ae8,2019-04-25 02:16:27,Andreas Kling,gtexteditor: Fix line_content_rect() behavior with custom alignments.,False,Fix line_content_rect() behavior with custom alignments.,gtexteditor,"diff --git a/LibGUI/GTextEditor.cpp b/LibGUI/GTextEditor.cpp
index ea1ecd51dcc8..6c7034da3fb4 100644
--- a/LibGUI/GTextEditor.cpp
+++ b/LibGUI/GTextEditor.cpp
@@ -243,7 +243,8 @@ void GTextEditor::paint_event(GPaintEvent& event)
     for (int i = first_visible_line; i <= last_visible_line; ++i) {
         auto& line = *m_lines[i];
         auto line_rect = line_content_rect(i);
-        line_rect.set_width(exposed_width);
+        // FIXME: Make sure we always fill the entire line.
+        //line_rect.set_width(exposed_width);
         if (is_multi_line() && i == m_cursor.line())
             painter.fill_rect(line_rect, Color(230, 230, 230));
         painter.draw_text(line_rect, line.characters(), line.length(), m_text_alignment, Color::Black);
@@ -608,26 +609,24 @@ Rect GTextEditor::line_widget_rect(int line_index) const
 void GTextEditor::scroll_cursor_into_view()
 {
     auto rect = cursor_content_rect();
-    if (m_cursor.column() == 0)
-        rect.set_x(0);
-    else if (m_cursor.column() >= m_lines[m_cursor.line()]->length())
-        rect.set_x(m_lines[m_cursor.line()]->width(font()) + m_horizontal_content_padding * 2);
+    rect.set_x(content_x_for_position(m_cursor));
     scroll_into_view(rect, true, true);
 }
 
 Rect GTextEditor::line_content_rect(int line_index) const
 {
+    auto& line = *m_lines[line_index];
     if (is_single_line()) {
-        Rect line_rect = { m_horizontal_content_padding, 0, content_width() - m_horizontal_content_padding * 2, font().glyph_height() + 2 };
+        Rect line_rect = { content_x_for_position({ line_index, 0 }), 0, line.length() * glyph_width(), font().glyph_height() + 2 };
         line_rect.center_vertically_within(rect());
         // FIXME: This would not be necessary if we knew more about the font and could center it based on baseline and x-height.
         line_rect.move_by(0, 1);
         return line_rect;
     }
     return {
-        m_horizontal_content_padding,
+        content_x_for_position({ line_index, 0 }),
         line_index * line_height(),
-        content_width() - m_horizontal_content_padding * 2,
+        line.length() * glyph_width(),
         line_height()
     };
 }
diff --git a/LibGUI/GTextEditor.h b/LibGUI/GTextEditor.h
index 649d0ac3c9c2..6776fe527244 100644
--- a/LibGUI/GTextEditor.h
+++ b/LibGUI/GTextEditor.h
@@ -90,6 +90,7 @@ class GTextEditor : public GScrollableWidget {
     int line_height() const { return font().glyph_height() + m_line_spacing; }
     GTextPosition cursor() const { return m_cursor; }
     GTextRange normalized_selection() const { return m_selection.normalized(); }
+    // FIXME: This should take glyph spacing into account, no?
     int glyph_width() const { return font().glyph_width('x'); }
 
     bool write_to_file(const String& path);"
dd9049f6cb2c5280a2134b1cca092db91d9866c4,2022-01-16 12:32:50,Ali Mohammad Pur,ports: Regenerate the patch readme file for mc,False,Regenerate the patch readme file for mc,ports,"diff --git a/Ports/mc/patches/ReadMe.md b/Ports/mc/patches/ReadMe.md
index 8ac05fc5030e..a4fc816a3cc0 100644
--- a/Ports/mc/patches/ReadMe.md
+++ b/Ports/mc/patches/ReadMe.md
@@ -1,31 +1,29 @@
-+# Patches for mc on SerenityOS
-+
-+## `0001-config-config.sub-Add-SerenityOS-as-portable-system.patch`
-+
-+config/config.sub: Add SerenityOS as portable system
-+
-+### Status
-+- [ ] Local?
-+- [X] Should be merged to upstream?
-+- [ ] Resolves issue(s) with our side of things
-+- [ ] Hack
-+
-+## 0002-filemanager-ext.c-Include-strings.h-if-SerenityOS.patch
-+
-+filemanager/ext.c: Include strings.h if SerenityOS
-+
-+### Status
-+- [ ] Local?
-+- [X] Should be merged to upstream?
-+- [ ] Resolves issue(s) with our side of things
-+- [ ] Hack
-+
-+## 0003-filemanager-ext.c-Use-str_ncasecmp-instead-of-strncasecmp-if-SerenityOS.patch
-+
-+filemanager/ext.c: Use str_ncasecmp instead of strncasecmp if SerenityOS
-+
-+### Status
-+- [ ] Local?
-+- [X] Should be merged to upstream?
-+- [ ] Resolves issue(s) with our side of things
-+- [ ] Hack
+# Patches for mc on SerenityOS
+
+## `0001-config-config.sub-Add-SerenityOS-as-portable-system.patch`
+
+config/config.sub: Add SerenityOS as portable system
+
+- [ ] Local?
+- [X] Should be merged to upstream?
+- [ ] Resolves issue(s) with our side of things
+- [ ] Hack
+
+## `0002-filemanager-ext.c-Include-strings.h-if-SerenityOS.patch`
+
+filemanager/ext.c: Include strings.h if SerenityOS
+
+- [ ] Local?
+- [X] Should be merged to upstream?
+- [ ] Resolves issue(s) with our side of things
+- [ ] Hack
+
+## `0003-filemanager-ext.c-Use-str_ncasecmp-instead-of-strnca.patch`
+
+filemanager/ext.c: Use str_ncasecmp instead of strncasecmp if SerenityOS
+
+- [ ] Local?
+- [X] Should be merged to upstream?
+- [ ] Resolves issue(s) with our side of things
+- [ ] Hack
+"
72d080b4babf39066c66961e67b9bfb651cbd5fb,2021-11-18 02:50:01,Sam Atkins,libweb: Parse multiple backgrounds :^),False,Parse multiple backgrounds :^),libweb,"diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
index 77b77e5eba08..a009ed42c725 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -2383,7 +2383,16 @@ RefPtr<StyleValue> Parser::parse_simple_comma_separated_value_list(Vector<StyleC
 
 RefPtr<StyleValue> Parser::parse_background_value(Vector<StyleComponentValueRule> const& component_values)
 {
+    NonnullRefPtrVector<StyleValue> background_images;
+    NonnullRefPtrVector<StyleValue> background_positions;
+    NonnullRefPtrVector<StyleValue> background_sizes;
+    NonnullRefPtrVector<StyleValue> background_repeats;
+    NonnullRefPtrVector<StyleValue> background_attachments;
+    NonnullRefPtrVector<StyleValue> background_clips;
+    NonnullRefPtrVector<StyleValue> background_origins;
     RefPtr<StyleValue> background_color;
+
+    // Per-layer values
     RefPtr<StyleValue> background_image;
     RefPtr<StyleValue> background_position;
     RefPtr<StyleValue> background_size;
@@ -2392,14 +2401,54 @@ RefPtr<StyleValue> Parser::parse_background_value(Vector<StyleComponentValueRule
     RefPtr<StyleValue> background_clip;
     RefPtr<StyleValue> background_origin;
 
+    bool has_multiple_layers = false;
+
+    auto background_layer_is_valid = [&](bool allow_background_color) -> bool {
+        if (allow_background_color) {
+            if (background_color)
+                return true;
+        } else {
+            if (background_color)
+                return false;
+        }
+        return background_image || background_position || background_size || background_repeat || background_attachment || background_clip || background_origin;
+    };
+
+    auto complete_background_layer = [&]() {
+        background_images.append(background_image ? background_image.release_nonnull() : property_initial_value(PropertyID::BackgroundImage));
+        background_positions.append(background_position ? background_position.release_nonnull() : property_initial_value(PropertyID::BackgroundPosition));
+        background_sizes.append(background_size ? background_size.release_nonnull() : property_initial_value(PropertyID::BackgroundSize));
+        background_repeats.append(background_repeat ? background_repeat.release_nonnull() : property_initial_value(PropertyID::BackgroundRepeat));
+        background_attachments.append(background_attachment ? background_attachment.release_nonnull() : property_initial_value(PropertyID::BackgroundAttachment));
+
+        if (!background_origin && !background_clip) {
+            background_origin = property_initial_value(PropertyID::BackgroundOrigin);
+            background_clip = property_initial_value(PropertyID::BackgroundClip);
+        } else if (!background_clip) {
+            background_clip = background_origin;
+        }
+        background_origins.append(background_origin.release_nonnull());
+        background_clips.append(background_clip.release_nonnull());
+
+        background_image = nullptr;
+        background_position = nullptr;
+        background_size = nullptr;
+        background_repeat = nullptr;
+        background_attachment = nullptr;
+        background_clip = nullptr;
+        background_origin = nullptr;
+    };
+
     auto tokens = TokenStream { component_values };
     while (tokens.has_next_token()) {
         auto& part = tokens.next_token();
 
-        // FIXME: Handle multiple backgrounds, by returning a List of BackgroundStyleValues.
         if (part.is(Token::Type::Comma)) {
-            dbgln(""CSS Parser does not yet support multiple comma-separated values for background."");
-            break;
+            has_multiple_layers = true;
+            if (!background_layer_is_valid(false))
+                return nullptr;
+            complete_background_layer();
+            continue;
         }
 
         auto value = parse_css_value(part);
@@ -2478,6 +2527,27 @@ RefPtr<StyleValue> Parser::parse_background_value(Vector<StyleComponentValueRule
         return nullptr;
     }
 
+    if (!background_layer_is_valid(true))
+        return nullptr;
+
+    // We only need to create StyleValueLists if there are multiple layers.
+    // Otherwise, we can pass the single StyleValues directly.
+    if (has_multiple_layers) {
+        complete_background_layer();
+
+        if (!background_color)
+            background_color = property_initial_value(PropertyID::BackgroundColor);
+        return BackgroundStyleValue::create(
+            background_color.release_nonnull(),
+            StyleValueList::create(move(background_images)),
+            StyleValueList::create(move(background_positions)),
+            StyleValueList::create(move(background_sizes)),
+            StyleValueList::create(move(background_repeats)),
+            StyleValueList::create(move(background_attachments)),
+            StyleValueList::create(move(background_origins)),
+            StyleValueList::create(move(background_clips)));
+    }
+
     if (!background_color)
         background_color = property_initial_value(PropertyID::BackgroundColor);
     if (!background_image)"
f4d8a24fe491eb75bace3b0be2b49e7d3ac165a1,2023-05-06 11:37:28,Sam Atkins,libweb: Propagate errors from parse_css_value and property_initial_value,False,Propagate errors from parse_css_value and property_initial_value,libweb,"diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSPropertyID.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSPropertyID.cpp
index 717167bda794..0ad0ee62e0ad 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSPropertyID.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/GenerateCSSPropertyID.cpp
@@ -107,7 +107,7 @@ PropertyID property_id_from_camel_case_string(StringView);
 PropertyID property_id_from_string(StringView);
 StringView string_from_property_id(PropertyID);
 bool is_inherited_property(PropertyID);
-NonnullRefPtr<StyleValue> property_initial_value(JS::Realm&, PropertyID);
+ErrorOr<NonnullRefPtr<StyleValue>> property_initial_value(JS::Realm&, PropertyID);
 
 bool property_accepts_value(PropertyID, StyleValue&);
 size_t property_maximum_value_count(PropertyID);
@@ -310,7 +310,7 @@ bool property_affects_stacking_context(PropertyID property_id)
     }
 }
 
-NonnullRefPtr<StyleValue> property_initial_value(JS::Realm& context_realm, PropertyID property_id)
+ErrorOr<NonnullRefPtr<StyleValue>> property_initial_value(JS::Realm& context_realm, PropertyID property_id)
 {
     static Array<RefPtr<StyleValue>, to_underlying(last_property_id) + 1> initial_values;
     if (auto initial_value = initial_values[to_underlying(property_id)])
@@ -339,7 +339,7 @@ NonnullRefPtr<StyleValue> property_initial_value(JS::Realm& context_realm, Prope
         member_generator.append(
             R""~~~(        case PropertyID::@name:titlecase@:
         {
-            auto parsed_value = parse_css_value(parsing_context, ""@initial_value_string@""sv, PropertyID::@name:titlecase@);
+            auto parsed_value = TRY(parse_css_value(parsing_context, ""@initial_value_string@""sv, PropertyID::@name:titlecase@));
             VERIFY(!parsed_value.is_null());
             auto initial_value = parsed_value.release_nonnull();
             initial_values[to_underlying(PropertyID::@name:titlecase@)] = initial_value;
diff --git a/Userland/Libraries/LibWeb/CSS/CSS.cpp b/Userland/Libraries/LibWeb/CSS/CSS.cpp
index 925e89a7c652..443830ff3432 100644
--- a/Userland/Libraries/LibWeb/CSS/CSS.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSS.cpp
@@ -28,7 +28,7 @@ bool supports(JS::VM& vm, StringView property, StringView value)
     // 1. If property is an ASCII case-insensitive match for any defined CSS property that the UA supports,
     //    and value successfully parses according to that property’s grammar, return true.
     if (auto property_id = property_id_from_string(property); property_id != PropertyID::Invalid) {
-        if (parse_css_value(Parser::ParsingContext { realm }, value, property_id))
+        if (parse_css_value(Parser::ParsingContext { realm }, value, property_id).release_value_but_fixme_should_propagate_errors())
             return true;
     }
 
diff --git a/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.cpp b/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.cpp
index 03ab7bbd858d..8dcbd8009388 100644
--- a/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.cpp
+++ b/Userland/Libraries/LibWeb/CSS/CSSStyleDeclaration.cpp
@@ -94,8 +94,8 @@ WebIDL::ExceptionOr<void> PropertyOwningCSSStyleDeclaration::set_property(Proper
 
     // 5. Let component value list be the result of parsing value for property property.
     auto component_value_list = is<ElementInlineCSSStyleDeclaration>(this)
-        ? parse_css_value(CSS::Parser::ParsingContext { static_cast<ElementInlineCSSStyleDeclaration&>(*this).element()->document() }, value, property_id)
-        : parse_css_value(CSS::Parser::ParsingContext { realm() }, value, property_id);
+        ? MUST(parse_css_value(CSS::Parser::ParsingContext { static_cast<ElementInlineCSSStyleDeclaration&>(*this).element()->document() }, value, property_id))
+        : MUST(parse_css_value(CSS::Parser::ParsingContext { realm() }, value, property_id));
 
     // 6. If component value list is null, then return.
     if (!component_value_list)
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
index 98f0b831f096..bf9c70904040 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -4123,21 +4123,21 @@ ErrorOr<RefPtr<StyleValue>> Parser::parse_background_value(Vector<ComponentValue
         return background_image || background_position || background_size || background_repeat || background_attachment || background_clip || background_origin;
     };
 
-    auto complete_background_layer = [&]() {
-        background_images.append(background_image ? background_image.release_nonnull() : property_initial_value(m_context.realm(), PropertyID::BackgroundImage));
-        background_positions.append(background_position ? background_position.release_nonnull() : property_initial_value(m_context.realm(), PropertyID::BackgroundPosition));
-        background_sizes.append(background_size ? background_size.release_nonnull() : property_initial_value(m_context.realm(), PropertyID::BackgroundSize));
-        background_repeats.append(background_repeat ? background_repeat.release_nonnull() : property_initial_value(m_context.realm(), PropertyID::BackgroundRepeat));
-        background_attachments.append(background_attachment ? background_attachment.release_nonnull() : property_initial_value(m_context.realm(), PropertyID::BackgroundAttachment));
+    auto complete_background_layer = [&]() -> ErrorOr<void> {
+        TRY(background_images.try_append(background_image ? background_image.release_nonnull() : TRY(property_initial_value(m_context.realm(), PropertyID::BackgroundImage))));
+        TRY(background_positions.try_append(background_position ? background_position.release_nonnull() : TRY(property_initial_value(m_context.realm(), PropertyID::BackgroundPosition))));
+        TRY(background_sizes.try_append(background_size ? background_size.release_nonnull() : TRY(property_initial_value(m_context.realm(), PropertyID::BackgroundSize))));
+        TRY(background_repeats.try_append(background_repeat ? background_repeat.release_nonnull() : TRY(property_initial_value(m_context.realm(), PropertyID::BackgroundRepeat))));
+        TRY(background_attachments.try_append(background_attachment ? background_attachment.release_nonnull() : TRY(property_initial_value(m_context.realm(), PropertyID::BackgroundAttachment))));
 
         if (!background_origin && !background_clip) {
-            background_origin = property_initial_value(m_context.realm(), PropertyID::BackgroundOrigin);
-            background_clip = property_initial_value(m_context.realm(), PropertyID::BackgroundClip);
+            background_origin = TRY(property_initial_value(m_context.realm(), PropertyID::BackgroundOrigin));
+            background_clip = TRY(property_initial_value(m_context.realm(), PropertyID::BackgroundClip));
         } else if (!background_clip) {
             background_clip = background_origin;
         }
-        background_origins.append(background_origin.release_nonnull());
-        background_clips.append(background_clip.release_nonnull());
+        TRY(background_origins.try_append(background_origin.release_nonnull()));
+        TRY(background_clips.try_append(background_clip.release_nonnull()));
 
         background_image = nullptr;
         background_position = nullptr;
@@ -4146,6 +4146,8 @@ ErrorOr<RefPtr<StyleValue>> Parser::parse_background_value(Vector<ComponentValue
         background_attachment = nullptr;
         background_clip = nullptr;
         background_origin = nullptr;
+
+        return {};
     };
 
     auto tokens = TokenStream { component_values };
@@ -4156,7 +4158,7 @@ ErrorOr<RefPtr<StyleValue>> Parser::parse_background_value(Vector<ComponentValue
             has_multiple_layers = true;
             if (!background_layer_is_valid(false))
                 return nullptr;
-            complete_background_layer();
+            TRY(complete_background_layer());
             continue;
         }
 
@@ -4241,10 +4243,10 @@ ErrorOr<RefPtr<StyleValue>> Parser::parse_background_value(Vector<ComponentValue
     // We only need to create StyleValueLists if there are multiple layers.
     // Otherwise, we can pass the single StyleValues directly.
     if (has_multiple_layers) {
-        complete_background_layer();
+        TRY(complete_background_layer());
 
         if (!background_color)
-            background_color = property_initial_value(m_context.realm(), PropertyID::BackgroundColor);
+            background_color = TRY(property_initial_value(m_context.realm(), PropertyID::BackgroundColor));
         return BackgroundStyleValue::create(
             background_color.release_nonnull(),
             TRY(StyleValueList::create(move(background_images), StyleValueList::Separator::Comma)),
@@ -4257,21 +4259,21 @@ ErrorOr<RefPtr<StyleValue>> Parser::parse_background_value(Vector<ComponentValue
     }
 
     if (!background_color)
-        background_color = property_initial_value(m_context.realm(), PropertyID::BackgroundColor);
+        background_color = TRY(property_initial_value(m_context.realm(), PropertyID::BackgroundColor));
     if (!background_image)
-        background_image = property_initial_value(m_context.realm(), PropertyID::BackgroundImage);
+        background_image = TRY(property_initial_value(m_context.realm(), PropertyID::BackgroundImage));
     if (!background_position)
-        background_position = property_initial_value(m_context.realm(), PropertyID::BackgroundPosition);
+        background_position = TRY(property_initial_value(m_context.realm(), PropertyID::BackgroundPosition));
     if (!background_size)
-        background_size = property_initial_value(m_context.realm(), PropertyID::BackgroundSize);
+        background_size = TRY(property_initial_value(m_context.realm(), PropertyID::BackgroundSize));
     if (!background_repeat)
-        background_repeat = property_initial_value(m_context.realm(), PropertyID::BackgroundRepeat);
+        background_repeat = TRY(property_initial_value(m_context.realm(), PropertyID::BackgroundRepeat));
     if (!background_attachment)
-        background_attachment = property_initial_value(m_context.realm(), PropertyID::BackgroundAttachment);
+        background_attachment = TRY(property_initial_value(m_context.realm(), PropertyID::BackgroundAttachment));
 
     if (!background_origin && !background_clip) {
-        background_origin = property_initial_value(m_context.realm(), PropertyID::BackgroundOrigin);
-        background_clip = property_initial_value(m_context.realm(), PropertyID::BackgroundClip);
+        background_origin = TRY(property_initial_value(m_context.realm(), PropertyID::BackgroundOrigin));
+        background_clip = TRY(property_initial_value(m_context.realm(), PropertyID::BackgroundClip));
     } else if (!background_clip) {
         background_clip = background_origin;
     }
@@ -4661,11 +4663,11 @@ ErrorOr<RefPtr<StyleValue>> Parser::parse_border_value(Vector<ComponentValue> co
     }
 
     if (!border_width)
-        border_width = property_initial_value(m_context.realm(), PropertyID::BorderWidth);
+        border_width = TRY(property_initial_value(m_context.realm(), PropertyID::BorderWidth));
     if (!border_style)
-        border_style = property_initial_value(m_context.realm(), PropertyID::BorderStyle);
+        border_style = TRY(property_initial_value(m_context.realm(), PropertyID::BorderStyle));
     if (!border_color)
-        border_color = property_initial_value(m_context.realm(), PropertyID::BorderColor);
+        border_color = TRY(property_initial_value(m_context.realm(), PropertyID::BorderColor));
 
     return BorderStyleValue::create(border_width.release_nonnull(), border_style.release_nonnull(), border_color.release_nonnull());
 }
@@ -5361,11 +5363,11 @@ ErrorOr<RefPtr<StyleValue>> Parser::parse_flex_value(Vector<ComponentValue> cons
     }
 
     if (!flex_grow)
-        flex_grow = property_initial_value(m_context.realm(), PropertyID::FlexGrow);
+        flex_grow = TRY(property_initial_value(m_context.realm(), PropertyID::FlexGrow));
     if (!flex_shrink)
-        flex_shrink = property_initial_value(m_context.realm(), PropertyID::FlexShrink);
+        flex_shrink = TRY(property_initial_value(m_context.realm(), PropertyID::FlexShrink));
     if (!flex_basis)
-        flex_basis = property_initial_value(m_context.realm(), PropertyID::FlexBasis);
+        flex_basis = TRY(property_initial_value(m_context.realm(), PropertyID::FlexBasis));
 
     return FlexStyleValue::create(flex_grow.release_nonnull(), flex_shrink.release_nonnull(), flex_basis.release_nonnull());
 }
@@ -5397,9 +5399,9 @@ ErrorOr<RefPtr<StyleValue>> Parser::parse_flex_flow_value(Vector<ComponentValue>
     }
 
     if (!flex_direction)
-        flex_direction = property_initial_value(m_context.realm(), PropertyID::FlexDirection);
+        flex_direction = TRY(property_initial_value(m_context.realm(), PropertyID::FlexDirection));
     if (!flex_wrap)
-        flex_wrap = property_initial_value(m_context.realm(), PropertyID::FlexWrap);
+        flex_wrap = TRY(property_initial_value(m_context.realm(), PropertyID::FlexWrap));
 
     return FlexFlowStyleValue::create(flex_direction.release_nonnull(), flex_wrap.release_nonnull());
 }
@@ -5510,13 +5512,13 @@ ErrorOr<RefPtr<StyleValue>> Parser::parse_font_value(Vector<ComponentValue> cons
         return nullptr;
 
     if (!font_stretch)
-        font_stretch = property_initial_value(m_context.realm(), PropertyID::FontStretch);
+        font_stretch = TRY(property_initial_value(m_context.realm(), PropertyID::FontStretch));
     if (!font_style)
-        font_style = property_initial_value(m_context.realm(), PropertyID::FontStyle);
+        font_style = TRY(property_initial_value(m_context.realm(), PropertyID::FontStyle));
     if (!font_weight)
-        font_weight = property_initial_value(m_context.realm(), PropertyID::FontWeight);
+        font_weight = TRY(property_initial_value(m_context.realm(), PropertyID::FontWeight));
     if (!line_height)
-        line_height = property_initial_value(m_context.realm(), PropertyID::LineHeight);
+        line_height = TRY(property_initial_value(m_context.realm(), PropertyID::LineHeight));
 
     return FontStyleValue::create(font_stretch.release_nonnull(), font_style.release_nonnull(), font_weight.release_nonnull(), font_size.release_nonnull(), line_height.release_nonnull(), font_families.release_nonnull());
 }
@@ -5844,11 +5846,11 @@ ErrorOr<RefPtr<StyleValue>> Parser::parse_list_style_value(Vector<ComponentValue
     }
 
     if (!list_position)
-        list_position = property_initial_value(m_context.realm(), PropertyID::ListStylePosition);
+        list_position = TRY(property_initial_value(m_context.realm(), PropertyID::ListStylePosition));
     if (!list_image)
-        list_image = property_initial_value(m_context.realm(), PropertyID::ListStyleImage);
+        list_image = TRY(property_initial_value(m_context.realm(), PropertyID::ListStyleImage));
     if (!list_type)
-        list_type = property_initial_value(m_context.realm(), PropertyID::ListStyleType);
+        list_type = TRY(property_initial_value(m_context.realm(), PropertyID::ListStyleType));
 
     return ListStyleStyleValue::create(list_position.release_nonnull(), list_image.release_nonnull(), list_type.release_nonnull());
 }
@@ -5930,13 +5932,13 @@ ErrorOr<RefPtr<StyleValue>> Parser::parse_text_decoration_value(Vector<Component
     }
 
     if (!decoration_line)
-        decoration_line = property_initial_value(m_context.realm(), PropertyID::TextDecorationLine);
+        decoration_line = TRY(property_initial_value(m_context.realm(), PropertyID::TextDecorationLine));
     if (!decoration_thickness)
-        decoration_thickness = property_initial_value(m_context.realm(), PropertyID::TextDecorationThickness);
+        decoration_thickness = TRY(property_initial_value(m_context.realm(), PropertyID::TextDecorationThickness));
     if (!decoration_style)
-        decoration_style = property_initial_value(m_context.realm(), PropertyID::TextDecorationStyle);
+        decoration_style = TRY(property_initial_value(m_context.realm(), PropertyID::TextDecorationStyle));
     if (!decoration_color)
-        decoration_color = property_initial_value(m_context.realm(), PropertyID::TextDecorationColor);
+        decoration_color = TRY(property_initial_value(m_context.realm(), PropertyID::TextDecorationColor));
 
     return TextDecorationStyleValue::create(decoration_line.release_nonnull(), decoration_thickness.release_nonnull(), decoration_style.release_nonnull(), decoration_color.release_nonnull());
 }
@@ -7756,12 +7758,12 @@ CSS::ElementInlineCSSStyleDeclaration* parse_css_style_attribute(CSS::Parser::Pa
     return parser.parse_as_style_attribute(element);
 }
 
-RefPtr<CSS::StyleValue> parse_css_value(CSS::Parser::ParsingContext const& context, StringView string, CSS::PropertyID property_id)
+ErrorOr<RefPtr<CSS::StyleValue>> parse_css_value(CSS::Parser::ParsingContext const& context, StringView string, CSS::PropertyID property_id)
 {
     if (string.is_empty())
-        return {};
-    auto parser = CSS::Parser::Parser::create(context, string).release_value_but_fixme_should_propagate_errors();
-    return parser.parse_as_css_value(property_id).release_value_but_fixme_should_propagate_errors();
+        return nullptr;
+    auto parser = TRY(CSS::Parser::Parser::create(context, string));
+    return parser.parse_as_css_value(property_id);
 }
 
 CSS::CSSRule* parse_css_rule(CSS::Parser::ParsingContext const& context, StringView css_text)
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
index ce59c198feb8..803eabac33ad 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.h
@@ -370,7 +370,7 @@ namespace Web {
 
 CSS::CSSStyleSheet* parse_css_stylesheet(CSS::Parser::ParsingContext const&, StringView, Optional<AK::URL> location = {});
 CSS::ElementInlineCSSStyleDeclaration* parse_css_style_attribute(CSS::Parser::ParsingContext const&, StringView, DOM::Element&);
-RefPtr<CSS::StyleValue> parse_css_value(CSS::Parser::ParsingContext const&, StringView, CSS::PropertyID property_id = CSS::PropertyID::Invalid);
+ErrorOr<RefPtr<CSS::StyleValue>> parse_css_value(CSS::Parser::ParsingContext const&, StringView, CSS::PropertyID property_id = CSS::PropertyID::Invalid);
 Optional<CSS::SelectorList> parse_selector(CSS::Parser::ParsingContext const&, StringView);
 CSS::CSSRule* parse_css_rule(CSS::Parser::ParsingContext const&, StringView);
 RefPtr<CSS::MediaQuery> parse_media_query(CSS::Parser::ParsingContext const&, StringView);
diff --git a/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp b/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
index f2af334c8206..42220c43aa04 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
@@ -1000,7 +1000,7 @@ static NonnullRefPtr<StyleValue const> get_inherit_value(JS::Realm& initial_valu
     auto* parent_element = element_to_inherit_style_from(element, pseudo_element);
 
     if (!parent_element || !parent_element->computed_css_values())
-        return property_initial_value(initial_value_context_realm, property_id);
+        return property_initial_value(initial_value_context_realm, property_id).release_value_but_fixme_should_propagate_errors();
     return parent_element->computed_css_values()->property(property_id);
 };
 
@@ -1013,12 +1013,12 @@ void StyleComputer::compute_defaulted_property_value(StyleProperties& style, DOM
         if (is_inherited_property(property_id))
             style.m_property_values[to_underlying(property_id)] = get_inherit_value(document().realm(), property_id, element, pseudo_element);
         else
-            style.m_property_values[to_underlying(property_id)] = property_initial_value(document().realm(), property_id);
+            style.m_property_values[to_underlying(property_id)] = property_initial_value(document().realm(), property_id).release_value_but_fixme_should_propagate_errors();
         return;
     }
 
     if (value_slot->is_initial()) {
-        value_slot = property_initial_value(document().realm(), property_id);
+        value_slot = property_initial_value(document().realm(), property_id).release_value_but_fixme_should_propagate_errors();
         return;
     }
 
@@ -1035,7 +1035,7 @@ void StyleComputer::compute_defaulted_property_value(StyleProperties& style, DOM
             value_slot = get_inherit_value(document().realm(), property_id, element, pseudo_element);
         } else {
             // and if it is not, this is treated as initial.
-            value_slot = property_initial_value(document().realm(), property_id);
+            value_slot = property_initial_value(document().realm(), property_id).release_value_but_fixme_should_propagate_errors();
         }
     }
 }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.cpp
index 9be2a2729baf..bf7529034e2e 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTableCellElement.cpp
@@ -41,7 +41,7 @@ void HTMLTableCellElement::apply_presentational_hints(CSS::StyleProperties& styl
             if (value.equals_ignoring_ascii_case(""center""sv) || value.equals_ignoring_ascii_case(""middle""sv)) {
                 style.set_property(CSS::PropertyID::TextAlign, CSS::IdentifierStyleValue::create(CSS::ValueID::LibwebCenter).release_value_but_fixme_should_propagate_errors());
             } else {
-                if (auto parsed_value = parse_css_value(CSS::Parser::ParsingContext { document() }, value.view(), CSS::PropertyID::TextAlign))
+                if (auto parsed_value = parse_css_value(CSS::Parser::ParsingContext { document() }, value.view(), CSS::PropertyID::TextAlign).release_value_but_fixme_should_propagate_errors())
                     style.set_property(CSS::PropertyID::TextAlign, parsed_value.release_nonnull());
             }
             return;
diff --git a/Userland/Libraries/LibWeb/Layout/SVGSVGBox.cpp b/Userland/Libraries/LibWeb/Layout/SVGSVGBox.cpp
index fedb8dd72316..4433ac8a7c41 100644
--- a/Userland/Libraries/LibWeb/Layout/SVGSVGBox.cpp
+++ b/Userland/Libraries/LibWeb/Layout/SVGSVGBox.cpp
@@ -28,11 +28,11 @@ void SVGSVGBox::prepare_for_replaced_layout()
         Optional<CSSPixels> w;
         Optional<CSSPixels> h;
         auto parsing_context = CSS::Parser::ParsingContext { document() };
-        auto width = parse_css_value(parsing_context, dom_node().attribute(Web::HTML::AttributeNames::width), CSS::PropertyID::Width);
+        auto width = parse_css_value(parsing_context, dom_node().attribute(Web::HTML::AttributeNames::width), CSS::PropertyID::Width).release_value_but_fixme_should_propagate_errors();
         if (!width.is_null() && width->has_length())
             w = width->to_length().to_px(*this);
 
-        auto height = parse_css_value(parsing_context, dom_node().attribute((HTML::AttributeNames::height)), CSS::PropertyID::Height);
+        auto height = parse_css_value(parsing_context, dom_node().attribute((HTML::AttributeNames::height)), CSS::PropertyID::Height).release_value_but_fixme_should_propagate_errors();
         if (!height.is_null() && height->has_length())
             h = height->to_length().to_px(*this);
         if (w.has_value() && h.has_value()) {
diff --git a/Userland/Libraries/LibWeb/SVG/SVGForeignObjectElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGForeignObjectElement.cpp
index ccaa0a79c5e4..06409cd7db58 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGForeignObjectElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGForeignObjectElement.cpp
@@ -64,10 +64,10 @@ void SVGForeignObjectElement::apply_presentational_hints(CSS::StyleProperties& s
 {
     Base::apply_presentational_hints(style);
     auto parsing_context = CSS::Parser::ParsingContext { document() };
-    if (auto width_value = parse_css_value(parsing_context, attribute(Web::HTML::AttributeNames::width), CSS::PropertyID::Width))
+    if (auto width_value = parse_css_value(parsing_context, attribute(Web::HTML::AttributeNames::width), CSS::PropertyID::Width).release_value_but_fixme_should_propagate_errors())
         style.set_property(CSS::PropertyID::Width, width_value.release_nonnull());
 
-    if (auto height_value = parse_css_value(parsing_context, attribute(Web::HTML::AttributeNames::height), CSS::PropertyID::Height))
+    if (auto height_value = parse_css_value(parsing_context, attribute(Web::HTML::AttributeNames::height), CSS::PropertyID::Height).release_value_but_fixme_should_propagate_errors())
         style.set_property(CSS::PropertyID::Height, height_value.release_nonnull());
 }
 
diff --git a/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp
index 62eab723c7d8..114819d45166 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGGraphicsElement.cpp
@@ -111,14 +111,14 @@ void SVGGraphicsElement::apply_presentational_hints(CSS::StyleProperties& style)
     for_each_attribute([&](auto& name, auto& value) {
         if (name.equals_ignoring_ascii_case(""fill""sv)) {
             // FIXME: The `fill` attribute and CSS `fill` property are not the same! But our support is limited enough that they are equivalent for now.
-            if (auto fill_value = parse_css_value(parsing_context, value, CSS::PropertyID::Fill))
+            if (auto fill_value = parse_css_value(parsing_context, value, CSS::PropertyID::Fill).release_value_but_fixme_should_propagate_errors())
                 style.set_property(CSS::PropertyID::Fill, fill_value.release_nonnull());
         } else if (name.equals_ignoring_ascii_case(""stroke""sv)) {
             // FIXME: The `stroke` attribute and CSS `stroke` property are not the same! But our support is limited enough that they are equivalent for now.
-            if (auto stroke_value = parse_css_value(parsing_context, value, CSS::PropertyID::Stroke))
+            if (auto stroke_value = parse_css_value(parsing_context, value, CSS::PropertyID::Stroke).release_value_but_fixme_should_propagate_errors())
                 style.set_property(CSS::PropertyID::Stroke, stroke_value.release_nonnull());
         } else if (name.equals_ignoring_ascii_case(""stroke-width""sv)) {
-            if (auto stroke_width_value = parse_css_value(parsing_context, value, CSS::PropertyID::StrokeWidth))
+            if (auto stroke_width_value = parse_css_value(parsing_context, value, CSS::PropertyID::StrokeWidth).release_value_but_fixme_should_propagate_errors())
                 style.set_property(CSS::PropertyID::StrokeWidth, stroke_width_value.release_nonnull());
         }
     });
diff --git a/Userland/Libraries/LibWeb/SVG/SVGSVGElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGSVGElement.cpp
index b44a78e2f082..2bb3b5a9023d 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGSVGElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGSVGElement.cpp
@@ -48,7 +48,7 @@ void SVGSVGElement::apply_presentational_hints(CSS::StyleProperties& style) cons
 
     auto width_attribute = attribute(SVG::AttributeNames::width);
     auto parsing_context = CSS::Parser::ParsingContext { document() };
-    if (auto width_value = parse_css_value(parsing_context, attribute(Web::HTML::AttributeNames::width), CSS::PropertyID::Width)) {
+    if (auto width_value = parse_css_value(parsing_context, attribute(Web::HTML::AttributeNames::width), CSS::PropertyID::Width).release_value_but_fixme_should_propagate_errors()) {
         style.set_property(CSS::PropertyID::Width, width_value.release_nonnull());
     } else if (width_attribute == """") {
         // If the `width` attribute is an empty string, it defaults to 100%.
@@ -59,7 +59,7 @@ void SVGSVGElement::apply_presentational_hints(CSS::StyleProperties& style) cons
 
     // Height defaults to 100%
     auto height_attribute = attribute(SVG::AttributeNames::height);
-    if (auto height_value = parse_css_value(parsing_context, attribute(Web::HTML::AttributeNames::height), CSS::PropertyID::Height)) {
+    if (auto height_value = parse_css_value(parsing_context, attribute(Web::HTML::AttributeNames::height), CSS::PropertyID::Height).release_value_but_fixme_should_propagate_errors()) {
         style.set_property(CSS::PropertyID::Height, height_value.release_nonnull());
     } else if (height_attribute == """") {
         // If the `height` attribute is an empty string, it defaults to 100%.
diff --git a/Userland/Libraries/LibWeb/SVG/SVGStopElement.cpp b/Userland/Libraries/LibWeb/SVG/SVGStopElement.cpp
index 235e82f70724..7f7d70807cc1 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGStopElement.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGStopElement.cpp
@@ -33,7 +33,7 @@ void SVGStopElement::apply_presentational_hints(CSS::StyleProperties& style) con
     for_each_attribute([&](auto& name, auto& value) {
         if (name.equals_ignoring_ascii_case(""stop-color""sv)) {
             CSS::Parser::ParsingContext parsing_context { document() };
-            if (auto stop_color = parse_css_value(parsing_context, value, CSS::PropertyID::StopColor)) {
+            if (auto stop_color = parse_css_value(parsing_context, value, CSS::PropertyID::StopColor).release_value_but_fixme_should_propagate_errors()) {
                 style.set_property(CSS::PropertyID::StopColor, stop_color.release_nonnull());
             }
         }"
d79de38bd22ab44c4110aed0074c3e360352e433,2020-01-16 01:49:26,Andreas Kling,kernel: Don't allow userspace to sys$open() literal symlinks,False,Don't allow userspace to sys$open() literal symlinks,kernel,"diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index 011ca4125035..7a3b7ba709cf 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -1863,6 +1863,9 @@ int Process::sys$open(const Syscall::SC_open_params* user_params)
     auto options = params.options;
     auto mode = params.mode;
 
+    if (options & O_NOFOLLOW_NOERROR)
+        return -EINVAL;
+
     if ((options & O_RDWR) || (options & O_WRONLY))
         REQUIRE_PROMISE(wpath);
     else
@@ -1905,6 +1908,9 @@ int Process::sys$openat(const Syscall::SC_openat_params* user_params)
     int options = params.options;
     u16 mode = params.mode;
 
+    if (options & O_NOFOLLOW_NOERROR)
+        return -EINVAL;
+
     if ((options & O_RDWR) || (options & O_WRONLY))
         REQUIRE_PROMISE(wpath);
     else"
8d3304f853f96dadf7005be831705b8f3eff23d1,2021-08-23 03:11:53,Karol Kosek,hackstudio: Update every editor with matching filename on 'Save as...',False,Update every editor with matching filename on 'Save as...',hackstudio,"diff --git a/Userland/DevTools/HackStudio/HackStudioWidget.cpp b/Userland/DevTools/HackStudio/HackStudioWidget.cpp
index c53a95f9204d..387afd0fb0e7 100644
--- a/Userland/DevTools/HackStudio/HackStudioWidget.cpp
+++ b/Userland/DevTools/HackStudio/HackStudioWidget.cpp
@@ -653,7 +653,14 @@ NonnullRefPtr<GUI::Action> HackStudioWidget::create_save_as_action()
         }
 
         String const relative_file_path = LexicalPath::relative_path(save_path.value(), m_project->root_path());
-        current_editor_wrapper().set_filename(relative_file_path);
+        if (current_editor_wrapper().filename().is_null()) {
+            current_editor_wrapper().set_filename(relative_file_path);
+        } else {
+            for (auto& editor_wrapper : m_all_editor_wrappers) {
+                if (editor_wrapper.filename() == old_filename)
+                    editor_wrapper.set_filename(relative_file_path);
+            }
+        }
         current_editor_wrapper().save();
 
         auto new_project_file = m_project->get_file(relative_file_path);"
ef2d4b9ed6b7e69e51a8038cf8a881c88e32b83b,2022-07-28 06:14:08,demostanis,base: Add sort(1) man page,False,Add sort(1) man page,base,"diff --git a/Base/usr/share/man/man1/sort.md b/Base/usr/share/man/man1/sort.md
new file mode 100644
index 000000000000..6a0c004bcfca
--- /dev/null
+++ b/Base/usr/share/man/man1/sort.md
@@ -0,0 +1,23 @@
+## Name
+
+sort - sort lines
+
+## Synopsis
+
+```**sh
+$ sort [INPUT]
+```
+
+## Description
+
+Sort each lines of INPUT (or standard input). A quick sort algorithm is used.
+
+## Examples
+
+```sh
+$ echo ""Well\nHello\nFriends!"" | sort
+Friends!
+Hello
+Well
+```
+"
9aa720e83ef2747aa515d972d1a22349a4792904,2021-10-11 23:46:53,Tobias Christiansen,libweb: Flexbox: Assume container size before layouting children,False,Flexbox: Assume container size before layouting children,libweb,"diff --git a/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
index 7d261ae8c35b..eeb86c8c6d95 100644
--- a/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/FlexFormattingContext.cpp
@@ -309,8 +309,17 @@ void FlexFormattingContext::run(Box& box, LayoutMode)
     // This is particularly important since we take references to the items stored in flex_items
     // later, whose addresses won't be stable if we added or removed any items.
     Vector<FlexItem> flex_items;
-    if (!box.has_definite_width())
-        box.set_width(box.width_of_logical_containing_block());
+    if (!box.has_definite_width()) {
+        box.set_width(box.containing_block()->width());
+    } else {
+        box.set_width(box.computed_values().width().resolved_or_zero(box, box.containing_block()->width()).to_px(box));
+    }
+
+    if (!box.has_definite_height()) {
+        box.set_height(box.containing_block()->height());
+    } else {
+        box.set_height(box.computed_values().height().resolved_or_zero(box, box.containing_block()->height()).to_px(box));
+    }
 
     box.for_each_child_of_type<Box>([&](Box& child_box) {
         layout_inside(child_box, LayoutMode::Default);"
b9dbe248aaa62b61b8513a67bec354701479eb71,2022-02-21 22:12:23,Filiph Sandström,lagom: Port LibSyntax,False,Port LibSyntax,lagom,"diff --git a/Meta/Lagom/CMakeLists.txt b/Meta/Lagom/CMakeLists.txt
index 32b4eed19b81..b2c4b10c9480 100644
--- a/Meta/Lagom/CMakeLists.txt
+++ b/Meta/Lagom/CMakeLists.txt
@@ -344,9 +344,9 @@ if (BUILD_LAGOM)
     # GUI-GML
     file(GLOB LIBGUI_GML_SOURCES CONFIGURE_DEPENDS ""../../Userland/Libraries/LibGUI/GML/*.cpp"")
     list(REMOVE_ITEM LIBGUI_GML_SOURCES ""${CMAKE_CURRENT_SOURCE_DIR}/../../Userland/Libraries/LibGUI/GML/AutocompleteProvider.cpp"")
-    list(REMOVE_ITEM LIBGUI_GML_SOURCES ""${CMAKE_CURRENT_SOURCE_DIR}/../../Userland/Libraries/LibGUI/GML/SyntaxHighlighter.cpp"")
     lagom_lib(GML gml
         SOURCES ${LIBGUI_GML_SOURCES}
+        LIBS LagomSyntax
     )
 
     # HTTP
@@ -423,6 +423,12 @@ if (BUILD_LAGOM)
         LIBS m LagomGfx
     )
 
+    # Syntax
+    file(GLOB LIBSYNTAX_SOURCES CONFIGURE_DEPENDS ""../../Userland/Libraries/LibSyntax/*.cpp"")
+    lagom_lib(Syntax syntax
+        SOURCES ${LIBSYNTAX_SOURCES}
+    )
+
     # SQL
     file(GLOB_RECURSE LIBSQL_SOURCES CONFIGURE_DEPENDS ""../../Userland/Libraries/LibSQL/*.cpp"")
     list(REMOVE_ITEM LIBSQL_SOURCES ""${CMAKE_CURRENT_SOURCE_DIR}/../../Userland/Libraries/LibSQL/AST/SyntaxHighlighter.cpp"")"
fa09152e233495944f0bbafdc6be88e2f9995782,2023-02-08 23:14:32,Tim Schumacher,ak: Remove the fallible constructor from `BigEndianInputBitStream`,False,Remove the fallible constructor from `BigEndianInputBitStream`,ak,"diff --git a/AK/BitStream.h b/AK/BitStream.h
index 922e86da17df..4cd2023e716d 100644
--- a/AK/BitStream.h
+++ b/AK/BitStream.h
@@ -17,9 +17,9 @@ namespace AK {
 /// in big-endian order from another stream.
 class BigEndianInputBitStream : public Stream {
 public:
-    static ErrorOr<NonnullOwnPtr<BigEndianInputBitStream>> construct(MaybeOwned<Stream> stream)
+    explicit BigEndianInputBitStream(MaybeOwned<Stream> stream)
+        : m_stream(move(stream))
     {
-        return adopt_nonnull_own_or_enomem<BigEndianInputBitStream>(new BigEndianInputBitStream(move(stream)));
     }
 
     // ^Stream
@@ -112,11 +112,6 @@ class BigEndianInputBitStream : public Stream {
     ALWAYS_INLINE bool is_aligned_to_byte_boundary() const { return m_bit_offset == 0; }
 
 private:
-    BigEndianInputBitStream(MaybeOwned<Stream> stream)
-        : m_stream(move(stream))
-    {
-    }
-
     Optional<u8> m_current_byte;
     size_t m_bit_offset { 0 };
     MaybeOwned<Stream> m_stream;
diff --git a/Tests/AK/TestBitStream.cpp b/Tests/AK/TestBitStream.cpp
index b04b11d39e07..92f1a6bf532c 100644
--- a/Tests/AK/TestBitStream.cpp
+++ b/Tests/AK/TestBitStream.cpp
@@ -72,23 +72,23 @@ TEST_CASE(big_endian_bit_stream_input_output_match)
     // Note: The bit stream only ever reads from/writes to the underlying stream in one byte chunks,
     // so testing with sizes that will not trigger a write will yield unexpected results.
     auto bit_write_stream = MUST(BigEndianOutputBitStream::construct(MaybeOwned<AK::Stream>(*memory_stream)));
-    auto bit_read_stream = MUST(BigEndianInputBitStream::construct(MaybeOwned<AK::Stream>(*memory_stream)));
+    BigEndianInputBitStream bit_read_stream { MaybeOwned<AK::Stream>(*memory_stream) };
 
     // Test two mirrored chunks of a fully mirrored pattern to check that we are not dropping bits.
     {
         MUST(bit_write_stream->write_bits(0b1111u, 4));
         MUST(bit_write_stream->write_bits(0b1111u, 4));
-        auto result = MUST(bit_read_stream->read_bits(4));
+        auto result = MUST(bit_read_stream.read_bits(4));
         EXPECT_EQ(0b1111u, result);
-        result = MUST(bit_read_stream->read_bits(4));
+        result = MUST(bit_read_stream.read_bits(4));
         EXPECT_EQ(0b1111u, result);
     }
     {
         MUST(bit_write_stream->write_bits(0b0000u, 4));
         MUST(bit_write_stream->write_bits(0b0000u, 4));
-        auto result = MUST(bit_read_stream->read_bits(4));
+        auto result = MUST(bit_read_stream.read_bits(4));
         EXPECT_EQ(0b0000u, result);
-        result = MUST(bit_read_stream->read_bits(4));
+        result = MUST(bit_read_stream.read_bits(4));
         EXPECT_EQ(0b0000u, result);
     }
 
@@ -96,9 +96,9 @@ TEST_CASE(big_endian_bit_stream_input_output_match)
     {
         MUST(bit_write_stream->write_bits(0b1000u, 4));
         MUST(bit_write_stream->write_bits(0b1000u, 4));
-        auto result = MUST(bit_read_stream->read_bits(4));
+        auto result = MUST(bit_read_stream.read_bits(4));
         EXPECT_EQ(0b1000u, result);
-        result = MUST(bit_read_stream->read_bits(4));
+        result = MUST(bit_read_stream.read_bits(4));
         EXPECT_EQ(0b1000u, result);
     }
 
@@ -106,16 +106,16 @@ TEST_CASE(big_endian_bit_stream_input_output_match)
     {
         MUST(bit_write_stream->write_bits(0b1000u, 4));
         MUST(bit_write_stream->write_bits(0b0100u, 4));
-        auto result = MUST(bit_read_stream->read_bits(4));
+        auto result = MUST(bit_read_stream.read_bits(4));
         EXPECT_EQ(0b1000u, result);
-        result = MUST(bit_read_stream->read_bits(4));
+        result = MUST(bit_read_stream.read_bits(4));
         EXPECT_EQ(0b0100u, result);
     }
 
     // Test a pattern that spans multiple bytes.
     {
         MUST(bit_write_stream->write_bits(0b1101001000100001u, 16));
-        auto result = MUST(bit_read_stream->read_bits(16));
+        auto result = MUST(bit_read_stream.read_bits(16));
         EXPECT_EQ(0b1101001000100001u, result);
     }
 }
diff --git a/Userland/Libraries/LibAudio/FlacLoader.cpp b/Userland/Libraries/LibAudio/FlacLoader.cpp
index 0d3decd763fa..d2ba2ed2cb76 100644
--- a/Userland/Libraries/LibAudio/FlacLoader.cpp
+++ b/Userland/Libraries/LibAudio/FlacLoader.cpp
@@ -60,7 +60,7 @@ MaybeLoaderError FlacLoaderPlugin::initialize()
 // 11.5 STREAM
 MaybeLoaderError FlacLoaderPlugin::parse_header()
 {
-    auto bit_input = LOADER_TRY(BigEndianInputBitStream::construct(MaybeOwned<AK::Stream>(*m_stream)));
+    BigEndianInputBitStream bit_input { MaybeOwned<AK::Stream>(*m_stream) };
 
     // A mixture of VERIFY and the non-crashing TRY().
 #define FLAC_VERIFY(check, category, msg)                                                                                                     \
@@ -71,28 +71,28 @@ MaybeLoaderError FlacLoaderPlugin::parse_header()
     } while (0)
 
     // Magic number
-    u32 flac = LOADER_TRY(bit_input->read_bits<u32>(32));
+    u32 flac = LOADER_TRY(bit_input.read_bits<u32>(32));
     m_data_start_location += 4;
     FLAC_VERIFY(flac == 0x664C6143, LoaderError::Category::Format, ""Magic number must be 'flaC'""); // ""flaC""
 
     // Receive the streaminfo block
-    auto streaminfo = TRY(next_meta_block(*bit_input));
+    auto streaminfo = TRY(next_meta_block(bit_input));
     FLAC_VERIFY(streaminfo.type == FlacMetadataBlockType::STREAMINFO, LoaderError::Category::Format, ""First block must be STREAMINFO"");
     auto streaminfo_data_memory = LOADER_TRY(FixedMemoryStream::construct(streaminfo.data.bytes()));
-    auto streaminfo_data = LOADER_TRY(BigEndianInputBitStream::construct(MaybeOwned<AK::Stream>(*streaminfo_data_memory)));
+    BigEndianInputBitStream streaminfo_data { MaybeOwned<AK::Stream>(*streaminfo_data_memory) };
 
     // 11.10 METADATA_BLOCK_STREAMINFO
-    m_min_block_size = LOADER_TRY(streaminfo_data->read_bits<u16>(16));
+    m_min_block_size = LOADER_TRY(streaminfo_data.read_bits<u16>(16));
     FLAC_VERIFY(m_min_block_size >= 16, LoaderError::Category::Format, ""Minimum block size must be 16"");
-    m_max_block_size = LOADER_TRY(streaminfo_data->read_bits<u16>(16));
+    m_max_block_size = LOADER_TRY(streaminfo_data.read_bits<u16>(16));
     FLAC_VERIFY(m_max_block_size >= 16, LoaderError::Category::Format, ""Maximum block size"");
-    m_min_frame_size = LOADER_TRY(streaminfo_data->read_bits<u32>(24));
-    m_max_frame_size = LOADER_TRY(streaminfo_data->read_bits<u32>(24));
-    m_sample_rate = LOADER_TRY(streaminfo_data->read_bits<u32>(20));
+    m_min_frame_size = LOADER_TRY(streaminfo_data.read_bits<u32>(24));
+    m_max_frame_size = LOADER_TRY(streaminfo_data.read_bits<u32>(24));
+    m_sample_rate = LOADER_TRY(streaminfo_data.read_bits<u32>(20));
     FLAC_VERIFY(m_sample_rate <= 655350, LoaderError::Category::Format, ""Sample rate"");
-    m_num_channels = LOADER_TRY(streaminfo_data->read_bits<u8>(3)) + 1; // 0 = one channel
+    m_num_channels = LOADER_TRY(streaminfo_data.read_bits<u8>(3)) + 1; // 0 = one channel
 
-    u8 bits_per_sample = LOADER_TRY(streaminfo_data->read_bits<u8>(5)) + 1;
+    u8 bits_per_sample = LOADER_TRY(streaminfo_data.read_bits<u8>(5)) + 1;
     if (bits_per_sample == 8) {
         // FIXME: Signed/Unsigned issues?
         m_sample_format = PcmSampleFormat::Uint8;
@@ -106,12 +106,12 @@ MaybeLoaderError FlacLoaderPlugin::parse_header()
         FLAC_VERIFY(false, LoaderError::Category::Format, ""Sample bit depth invalid"");
     }
 
-    m_total_samples = LOADER_TRY(streaminfo_data->read_bits<u64>(36));
+    m_total_samples = LOADER_TRY(streaminfo_data.read_bits<u64>(36));
     FLAC_VERIFY(m_total_samples > 0, LoaderError::Category::Format, ""Number of samples is zero"");
     // Parse checksum into a buffer first
     [[maybe_unused]] u128 md5_checksum;
-    VERIFY(streaminfo_data->is_aligned_to_byte_boundary());
-    auto md5_bytes_read = LOADER_TRY(streaminfo_data->read(md5_checksum.bytes()));
+    VERIFY(streaminfo_data.is_aligned_to_byte_boundary());
+    auto md5_bytes_read = LOADER_TRY(streaminfo_data.read(md5_checksum.bytes()));
     FLAC_VERIFY(md5_bytes_read.size() == md5_checksum.my_size(), LoaderError::Category::IO, ""MD5 Checksum size"");
     md5_checksum.bytes().copy_to({ m_md5_checksum, sizeof(m_md5_checksum) });
 
@@ -120,7 +120,7 @@ MaybeLoaderError FlacLoaderPlugin::parse_header()
     [[maybe_unused]] u16 total_meta_blocks = meta_blocks_parsed;
     FlacRawMetadataBlock block = streaminfo;
     while (!block.is_last_block) {
-        block = TRY(next_meta_block(*bit_input));
+        block = TRY(next_meta_block(bit_input));
         switch (block.type) {
         case (FlacMetadataBlockType::SEEKTABLE):
             TRY(load_seektable(block));
@@ -150,30 +150,30 @@ MaybeLoaderError FlacLoaderPlugin::parse_header()
 MaybeLoaderError FlacLoaderPlugin::load_picture(FlacRawMetadataBlock& block)
 {
     auto memory_stream = LOADER_TRY(FixedMemoryStream::construct(block.data.bytes()));
-    auto picture_block_bytes = LOADER_TRY(BigEndianInputBitStream::construct(MaybeOwned<AK::Stream>(*memory_stream)));
+    BigEndianInputBitStream picture_block_bytes { MaybeOwned<AK::Stream>(*memory_stream) };
 
     PictureData picture {};
 
-    picture.type = static_cast<ID3PictureType>(LOADER_TRY(picture_block_bytes->read_bits(32)));
+    picture.type = static_cast<ID3PictureType>(LOADER_TRY(picture_block_bytes.read_bits(32)));
 
-    auto const mime_string_length = LOADER_TRY(picture_block_bytes->read_bits(32));
+    auto const mime_string_length = LOADER_TRY(picture_block_bytes.read_bits(32));
     // Note: We are seeking before reading the value to ensure that we stayed inside buffer's size.
     auto offset_before_seeking = memory_stream->offset();
     LOADER_TRY(memory_stream->seek(mime_string_length, SeekMode::FromCurrentPosition));
     picture.mime_string = { block.data.bytes().data() + offset_before_seeking, (size_t)mime_string_length };
 
-    auto const description_string_length = LOADER_TRY(picture_block_bytes->read_bits(32));
+    auto const description_string_length = LOADER_TRY(picture_block_bytes.read_bits(32));
     offset_before_seeking = memory_stream->offset();
     LOADER_TRY(memory_stream->seek(description_string_length, SeekMode::FromCurrentPosition));
     picture.description_string = Vector<u32> { Span<u32> { reinterpret_cast<u32*>(block.data.bytes().data() + offset_before_seeking), (size_t)description_string_length } };
 
-    picture.width = LOADER_TRY(picture_block_bytes->read_bits(32));
-    picture.height = LOADER_TRY(picture_block_bytes->read_bits(32));
+    picture.width = LOADER_TRY(picture_block_bytes.read_bits(32));
+    picture.height = LOADER_TRY(picture_block_bytes.read_bits(32));
 
-    picture.color_depth = LOADER_TRY(picture_block_bytes->read_bits(32));
-    picture.colors = LOADER_TRY(picture_block_bytes->read_bits(32));
+    picture.color_depth = LOADER_TRY(picture_block_bytes.read_bits(32));
+    picture.colors = LOADER_TRY(picture_block_bytes.read_bits(32));
 
-    auto const picture_size = LOADER_TRY(picture_block_bytes->read_bits(32));
+    auto const picture_size = LOADER_TRY(picture_block_bytes.read_bits(32));
     offset_before_seeking = memory_stream->offset();
     LOADER_TRY(memory_stream->seek(picture_size, SeekMode::FromCurrentPosition));
     picture.data = Vector<u8> { Span<u8> { block.data.bytes().data() + offset_before_seeking, (size_t)picture_size } };
@@ -187,13 +187,13 @@ MaybeLoaderError FlacLoaderPlugin::load_picture(FlacRawMetadataBlock& block)
 MaybeLoaderError FlacLoaderPlugin::load_seektable(FlacRawMetadataBlock& block)
 {
     auto memory_stream = LOADER_TRY(FixedMemoryStream::construct(block.data.bytes()));
-    auto seektable_bytes = LOADER_TRY(BigEndianInputBitStream::construct(MaybeOwned<AK::Stream>(*memory_stream)));
+    BigEndianInputBitStream seektable_bytes { MaybeOwned<AK::Stream>(*memory_stream) };
     for (size_t i = 0; i < block.length / 18; ++i) {
         // 11.14. SEEKPOINT
         FlacSeekPoint seekpoint {
-            .sample_index = LOADER_TRY(seektable_bytes->read_bits<u64>(64)),
-            .byte_offset = LOADER_TRY(seektable_bytes->read_bits<u64>(64)),
-            .num_samples = LOADER_TRY(seektable_bytes->read_bits<u16>(16))
+            .sample_index = LOADER_TRY(seektable_bytes.read_bits<u64>(64)),
+            .byte_offset = LOADER_TRY(seektable_bytes.read_bits<u64>(64)),
+            .num_samples = LOADER_TRY(seektable_bytes.read_bits<u16>(16))
         };
         m_seektable.append(seekpoint);
     }
@@ -333,55 +333,55 @@ MaybeLoaderError FlacLoaderPlugin::next_frame(Span<Sample> target_vector)
         }                                                                                                                                         \
     } while (0)
 
-    auto bit_stream = LOADER_TRY(BigEndianInputBitStream::construct(MaybeOwned<AK::Stream>(*m_stream)));
+    BigEndianInputBitStream bit_stream { MaybeOwned<AK::Stream>(*m_stream) };
 
     // TODO: Check the CRC-16 checksum (and others) by keeping track of read data
 
     // 11.22. FRAME_HEADER
-    u16 sync_code = LOADER_TRY(bit_stream->read_bits<u16>(14));
+    u16 sync_code = LOADER_TRY(bit_stream.read_bits<u16>(14));
     FLAC_VERIFY(sync_code == 0b11111111111110, LoaderError::Category::Format, ""Sync code"");
-    bool reserved_bit = LOADER_TRY(bit_stream->read_bit());
+    bool reserved_bit = LOADER_TRY(bit_stream.read_bit());
     FLAC_VERIFY(reserved_bit == 0, LoaderError::Category::Format, ""Reserved frame header bit"");
     // 11.22.2. BLOCKING STRATEGY
-    [[maybe_unused]] bool blocking_strategy = LOADER_TRY(bit_stream->read_bit());
+    [[maybe_unused]] bool blocking_strategy = LOADER_TRY(bit_stream.read_bit());
 
-    u32 sample_count = TRY(convert_sample_count_code(LOADER_TRY(bit_stream->read_bits<u8>(4))));
+    u32 sample_count = TRY(convert_sample_count_code(LOADER_TRY(bit_stream.read_bits<u8>(4))));
 
-    u32 frame_sample_rate = TRY(convert_sample_rate_code(LOADER_TRY(bit_stream->read_bits<u8>(4))));
+    u32 frame_sample_rate = TRY(convert_sample_rate_code(LOADER_TRY(bit_stream.read_bits<u8>(4))));
 
-    u8 channel_type_num = LOADER_TRY(bit_stream->read_bits<u8>(4));
+    u8 channel_type_num = LOADER_TRY(bit_stream.read_bits<u8>(4));
     FLAC_VERIFY(channel_type_num < 0b1011, LoaderError::Category::Format, ""Channel assignment"");
     FlacFrameChannelType channel_type = (FlacFrameChannelType)channel_type_num;
 
-    PcmSampleFormat bit_depth = TRY(convert_bit_depth_code(LOADER_TRY(bit_stream->read_bits<u8>(3))));
+    PcmSampleFormat bit_depth = TRY(convert_bit_depth_code(LOADER_TRY(bit_stream.read_bits<u8>(3))));
 
-    reserved_bit = LOADER_TRY(bit_stream->read_bit());
+    reserved_bit = LOADER_TRY(bit_stream.read_bit());
     FLAC_VERIFY(reserved_bit == 0, LoaderError::Category::Format, ""Reserved frame header end bit"");
 
     // 11.22.8. CODED NUMBER
     // FIXME: sample number can be 8-56 bits, frame number can be 8-48 bits
-    m_current_sample_or_frame = LOADER_TRY(read_utf8_char(*bit_stream));
+    m_current_sample_or_frame = LOADER_TRY(read_utf8_char(bit_stream));
 
     // Conditional header variables
     // 11.22.9. BLOCK SIZE INT
     if (sample_count == FLAC_BLOCKSIZE_AT_END_OF_HEADER_8) {
-        sample_count = LOADER_TRY(bit_stream->read_bits<u32>(8)) + 1;
+        sample_count = LOADER_TRY(bit_stream.read_bits<u32>(8)) + 1;
     } else if (sample_count == FLAC_BLOCKSIZE_AT_END_OF_HEADER_16) {
-        sample_count = LOADER_TRY(bit_stream->read_bits<u32>(16)) + 1;
+        sample_count = LOADER_TRY(bit_stream.read_bits<u32>(16)) + 1;
     }
 
     // 11.22.10. SAMPLE RATE INT
     if (frame_sample_rate == FLAC_SAMPLERATE_AT_END_OF_HEADER_8) {
-        frame_sample_rate = LOADER_TRY(bit_stream->read_bits<u32>(8)) * 1000;
+        frame_sample_rate = LOADER_TRY(bit_stream.read_bits<u32>(8)) * 1000;
     } else if (frame_sample_rate == FLAC_SAMPLERATE_AT_END_OF_HEADER_16) {
-        frame_sample_rate = LOADER_TRY(bit_stream->read_bits<u32>(16));
+        frame_sample_rate = LOADER_TRY(bit_stream.read_bits<u32>(16));
     } else if (frame_sample_rate == FLAC_SAMPLERATE_AT_END_OF_HEADER_16X10) {
-        frame_sample_rate = LOADER_TRY(bit_stream->read_bits<u32>(16)) * 10;
+        frame_sample_rate = LOADER_TRY(bit_stream.read_bits<u32>(16)) * 10;
     }
 
     // 11.22.11. FRAME CRC
     // TODO: check header checksum, see above
-    [[maybe_unused]] u8 checksum = LOADER_TRY(bit_stream->read_bits<u8>(8));
+    [[maybe_unused]] u8 checksum = LOADER_TRY(bit_stream.read_bits<u8>(8));
 
     dbgln_if(AFLACLOADER_DEBUG, ""Frame: {} samples, {}bit {}Hz, channeltype {:x}, {} number {}, header checksum {}"", sample_count, pcm_bits_per_sample(bit_depth), frame_sample_rate, channel_type_num, blocking_strategy ? ""sample"" : ""frame"", m_current_sample_or_frame, checksum);
 
@@ -397,17 +397,17 @@ MaybeLoaderError FlacLoaderPlugin::next_frame(Span<Sample> target_vector)
     current_subframes.ensure_capacity(subframe_count);
 
     for (u8 i = 0; i < subframe_count; ++i) {
-        FlacSubframeHeader new_subframe = TRY(next_subframe_header(*bit_stream, i));
-        Vector<i32> subframe_samples = TRY(parse_subframe(new_subframe, *bit_stream));
+        FlacSubframeHeader new_subframe = TRY(next_subframe_header(bit_stream, i));
+        Vector<i32> subframe_samples = TRY(parse_subframe(new_subframe, bit_stream));
         current_subframes.unchecked_append(move(subframe_samples));
     }
 
     // 11.2. Overview (""The audio data is composed of..."")
-    bit_stream->align_to_byte_boundary();
+    bit_stream.align_to_byte_boundary();
 
     // 11.23. FRAME_FOOTER
     // TODO: check checksum, see above
-    [[maybe_unused]] u16 footer_checksum = LOADER_TRY(bit_stream->read_bits<u16>(16));
+    [[maybe_unused]] u16 footer_checksum = LOADER_TRY(bit_stream.read_bits<u16>(16));
     dbgln_if(AFLACLOADER_DEBUG, ""Subframe footer checksum: {}"", footer_checksum);
 
     Vector<i32> left;
diff --git a/Userland/Libraries/LibAudio/MP3Loader.cpp b/Userland/Libraries/LibAudio/MP3Loader.cpp
index f6804fa5a04f..693f6805275d 100644
--- a/Userland/Libraries/LibAudio/MP3Loader.cpp
+++ b/Userland/Libraries/LibAudio/MP3Loader.cpp
@@ -41,7 +41,7 @@ Result<NonnullOwnPtr<MP3LoaderPlugin>, LoaderError> MP3LoaderPlugin::create(Byte
 
 MaybeLoaderError MP3LoaderPlugin::initialize()
 {
-    m_bitstream = LOADER_TRY(BigEndianInputBitStream::construct(MaybeOwned<AK::Stream>(*m_stream)));
+    m_bitstream = LOADER_TRY(try_make<BigEndianInputBitStream>(MaybeOwned<AK::Stream>(*m_stream)));
 
     TRY(synchronize());
 
@@ -242,12 +242,12 @@ ErrorOr<MP3::MP3Frame, LoaderError> MP3LoaderPlugin::read_frame_data(MP3::Header
 
     TRY(m_bit_reservoir.discard(old_reservoir_size - frame.main_data_begin));
 
-    auto reservoir_stream = TRY(BigEndianInputBitStream::construct(MaybeOwned<AK::Stream>(m_bit_reservoir)));
+    BigEndianInputBitStream reservoir_stream { MaybeOwned<AK::Stream>(m_bit_reservoir) };
 
     for (size_t granule_index = 0; granule_index < 2; granule_index++) {
         for (size_t channel_index = 0; channel_index < header.channel_count(); channel_index++) {
-            size_t scale_factor_size = TRY(read_scale_factors(frame, *reservoir_stream, granule_index, channel_index));
-            TRY(read_huffman_data(frame, *reservoir_stream, granule_index, channel_index, scale_factor_size));
+            size_t scale_factor_size = TRY(read_scale_factors(frame, reservoir_stream, granule_index, channel_index));
+            TRY(read_huffman_data(frame, reservoir_stream, granule_index, channel_index, scale_factor_size));
             if (frame.channels[channel_index].granules[granule_index].block_type == MP3::BlockType::Short) {
                 reorder_samples(frame.channels[channel_index].granules[granule_index], frame.header.samplerate);"
ef458f7b665c2557e086570b445e7216f692c7ed,2020-10-27 02:06:40,Till Mayer,solitaire: Refactor CardStack layout code,False,Refactor CardStack layout code,solitaire,"diff --git a/Games/Solitaire/Card.cpp b/Games/Solitaire/Card.cpp
index 72ae50e42b2e..c98de8a90bd2 100644
--- a/Games/Solitaire/Card.cpp
+++ b/Games/Solitaire/Card.cpp
@@ -166,7 +166,7 @@ void Card::save_old_position()
     m_old_position_valid = true;
 }
 
-void Card::draw_complete(GUI::Painter& painter, const Color& background_color)
+void Card::clear_and_draw(GUI::Painter& painter, const Color& background_color)
 {
     if (is_old_position_valid())
         clear(painter, background_color);
diff --git a/Games/Solitaire/Card.h b/Games/Solitaire/Card.h
index 2f3f31084d70..8a5652d481ba 100644
--- a/Games/Solitaire/Card.h
+++ b/Games/Solitaire/Card.h
@@ -69,7 +69,7 @@ class Card final : public Core::Object {
 
     void draw(GUI::Painter&) const;
     void clear(GUI::Painter&, const Color& background_color) const;
-    void draw_complete(GUI::Painter&, const Color& background_color);
+    void clear_and_draw(GUI::Painter&, const Color& background_color);
 
 private:
     Card(Type type, uint8_t value);
diff --git a/Games/Solitaire/CardStack.cpp b/Games/Solitaire/CardStack.cpp
index dfac4b93474a..bb2b1bade5b2 100644
--- a/Games/Solitaire/CardStack.cpp
+++ b/Games/Solitaire/CardStack.cpp
@@ -29,22 +29,17 @@
 CardStack::CardStack()
     : m_position({ 0, 0 })
     , m_type(Invalid)
-    , m_shift_x(0)
-    , m_shift_y(0)
-    , m_step(1)
     , m_base(m_position, { Card::width, Card::height })
 {
 }
 
-CardStack::CardStack(const Gfx::IntPoint& position, Type type, uint8_t shift_x, uint8_t shift_y, uint8_t step)
+CardStack::CardStack(const Gfx::IntPoint& position, Type type)
     : m_position(position)
     , m_type(type)
-    , m_shift_x(shift_x)
-    , m_shift_y(shift_y)
-    , m_step(step)
+    , m_rules(rules_for_type(type))
     , m_base(m_position, { Card::width, Card::height })
 {
-    ASSERT(step && type != Invalid);
+    ASSERT(type != Invalid);
     calculate_bounding_box();
 }
 
@@ -88,7 +83,7 @@ void CardStack::draw(GUI::Painter& painter, const Gfx::Color& background_color)
     if (is_empty())
         return;
 
-    if (m_shift_x == 0 && m_shift_y == 0) {
+    if (m_rules.shift_x == 0 && m_rules.shift_y == 0) {
         auto& card = peek();
         card.draw(painter);
         return;
@@ -96,11 +91,12 @@ void CardStack::draw(GUI::Painter& painter, const Gfx::Color& background_color)
 
     for (auto& card : m_stack) {
         if (!card.is_moving())
-            card.draw_complete(painter, background_color);
+            card.clear_and_draw(painter, background_color);
     }
 
     m_dirty = false;
 }
+
 void CardStack::rebound_cards()
 {
     ASSERT(m_stack_positions.size() == m_stack.size());
@@ -183,15 +179,14 @@ bool CardStack::is_allowed_to_push(const Card& card) const
 
 void CardStack::push(NonnullRefPtr<Card> card)
 {
-    int size = m_stack.size();
-    int ud_shift = (m_type == Normal) ? 3 : 1;
+    auto size = m_stack.size();
     auto top_most_position = m_stack_positions.is_empty() ? m_position : m_stack_positions.last();
 
-    if (size && size % m_step == 0) {
+    if (size && size % m_rules.step == 0) {
         if (peek().is_upside_down())
-            top_most_position.move_by(m_shift_x, ((m_shift_y == 0) ? 0 : ud_shift));
+            top_most_position.move_by(m_rules.shift_x, m_rules.shift_y_upside_down);
         else
-            top_most_position.move_by(m_shift_x, m_shift_y);
+            top_most_position.move_by(m_rules.shift_x, m_rules.shift_y);
     }
 
     if (m_type == Stock)
@@ -225,16 +220,15 @@ void CardStack::calculate_bounding_box()
 
     uint16_t width = 0;
     uint16_t height = 0;
-    int card_position = 0;
+    size_t card_position = 0;
     for (auto& card : m_stack) {
-        if (card_position % m_step == 0 && card_position) {
-            if (card.is_upside_down() && m_type != Stock) {
-                int ud_shift = (m_type == Normal) ? 3 : 1;
-                width += m_shift_x;
-                height += (m_shift_y == 0) ? 0 : ud_shift;
+        if (card_position % m_rules.step == 0 && card_position) {
+            if (card.is_upside_down()) {
+                width += m_rules.shift_x;
+                height += m_rules.shift_y_upside_down;
             } else {
-                width += m_shift_x;
-                height += m_shift_y;
+                width += m_rules.shift_x;
+                height += m_rules.shift_y;
             }
         }
         ++card_position;
diff --git a/Games/Solitaire/CardStack.h b/Games/Solitaire/CardStack.h
index e4cb2be77ba6..18bac7a027da 100644
--- a/Games/Solitaire/CardStack.h
+++ b/Games/Solitaire/CardStack.h
@@ -40,7 +40,7 @@ class CardStack final {
     };
 
     CardStack();
-    CardStack(const Gfx::IntPoint& position, Type type, uint8_t shift_x, uint8_t shift_y, uint8_t step = 1);
+    CardStack(const Gfx::IntPoint& position, Type type);
 
     bool is_dirty() const { return m_dirty; }
     bool is_empty() const { return m_stack.is_empty(); }
@@ -64,6 +64,28 @@ class CardStack final {
     void clear();
 
 private:
+    struct StackRules {
+        uint8_t shift_x { 0 };
+        uint8_t shift_y { 0 };
+        uint8_t step { 1 };
+        uint8_t shift_y_upside_down { 0 };
+    };
+
+    constexpr StackRules rules_for_type(Type stack_type)
+    {
+        switch (stack_type) {
+        case Foundation:
+            return { 2, 1, 4, 1 };
+        case Normal:
+            return { 0, 15, 1, 3 };
+        case Stock:
+        case Waste:
+            return { 2, 1, 8, 1 };
+        default:
+            return {};
+        }
+    }
+
     void calculate_bounding_box();
 
     NonnullRefPtrVector<Card> m_stack;
@@ -71,9 +93,7 @@ class CardStack final {
     Gfx::IntPoint m_position;
     Gfx::IntRect m_bounding_box;
     Type m_type { Invalid };
-    uint8_t m_shift_x { 0 };
-    uint8_t m_shift_y { 0 };
-    uint8_t m_step {};
+    StackRules m_rules;
     bool m_focused { false };
     bool m_dirty { false };
     Gfx::IntRect m_base;
diff --git a/Games/Solitaire/SolitaireWidget.cpp b/Games/Solitaire/SolitaireWidget.cpp
index 3ec581d617cb..6c944248ce0c 100644
--- a/Games/Solitaire/SolitaireWidget.cpp
+++ b/Games/Solitaire/SolitaireWidget.cpp
@@ -37,19 +37,19 @@ SolitaireWidget::SolitaireWidget(GUI::Window& window, Function<void(uint32_t)>&&
 {
     set_fill_with_background_color(false);
 
-    m_stacks[Stock] = CardStack({ 10, 10 }, CardStack::Type::Stock, 2, 1, 8);
-    m_stacks[Waste] = CardStack({ 10 + Card::width + 10, 10 }, CardStack::Type::Waste, 2, 1, 8);
-    m_stacks[Foundation4] = CardStack({ SolitaireWidget::width - Card::width - 10, 10 }, CardStack::Type::Foundation, 2, 1, 4);
-    m_stacks[Foundation3] = CardStack({ SolitaireWidget::width - 2 * Card::width - 20, 10 }, CardStack::Type::Foundation, 2, 1, 4);
-    m_stacks[Foundation2] = CardStack({ SolitaireWidget::width - 3 * Card::width - 30, 10 }, CardStack::Type::Foundation, 2, 1, 4);
-    m_stacks[Foundation1] = CardStack({ SolitaireWidget::width - 4 * Card::width - 40, 10 }, CardStack::Type::Foundation, 2, 1, 4);
-    m_stacks[Pile1] = CardStack({ 10, 10 + Card::height + 10 }, CardStack::Type::Normal, 0, 15);
-    m_stacks[Pile2] = CardStack({ 10 + Card::width + 10, 10 + Card::height + 10 }, CardStack::Type::Normal, 0, 15);
-    m_stacks[Pile3] = CardStack({ 10 + 2 * Card::width + 20, 10 + Card::height + 10 }, CardStack::Type::Normal, 0, 15);
-    m_stacks[Pile4] = CardStack({ 10 + 3 * Card::width + 30, 10 + Card::height + 10 }, CardStack::Type::Normal, 0, 15);
-    m_stacks[Pile5] = CardStack({ 10 + 4 * Card::width + 40, 10 + Card::height + 10 }, CardStack::Type::Normal, 0, 15);
-    m_stacks[Pile6] = CardStack({ 10 + 5 * Card::width + 50, 10 + Card::height + 10 }, CardStack::Type::Normal, 0, 15);
-    m_stacks[Pile7] = CardStack({ 10 + 6 * Card::width + 60, 10 + Card::height + 10 }, CardStack::Type::Normal, 0, 15);
+    m_stacks[Stock] = CardStack({ 10, 10 }, CardStack::Type::Stock);
+    m_stacks[Waste] = CardStack({ 10 + Card::width + 10, 10 }, CardStack::Type::Waste);
+    m_stacks[Foundation4] = CardStack({ SolitaireWidget::width - Card::width - 10, 10 }, CardStack::Type::Foundation);
+    m_stacks[Foundation3] = CardStack({ SolitaireWidget::width - 2 * Card::width - 20, 10 }, CardStack::Type::Foundation);
+    m_stacks[Foundation2] = CardStack({ SolitaireWidget::width - 3 * Card::width - 30, 10 }, CardStack::Type::Foundation);
+    m_stacks[Foundation1] = CardStack({ SolitaireWidget::width - 4 * Card::width - 40, 10 }, CardStack::Type::Foundation);
+    m_stacks[Pile1] = CardStack({ 10, 10 + Card::height + 10 }, CardStack::Type::Normal);
+    m_stacks[Pile2] = CardStack({ 10 + Card::width + 10, 10 + Card::height + 10 }, CardStack::Type::Normal);
+    m_stacks[Pile3] = CardStack({ 10 + 2 * Card::width + 20, 10 + Card::height + 10 }, CardStack::Type::Normal);
+    m_stacks[Pile4] = CardStack({ 10 + 3 * Card::width + 30, 10 + Card::height + 10 }, CardStack::Type::Normal);
+    m_stacks[Pile5] = CardStack({ 10 + 4 * Card::width + 40, 10 + Card::height + 10 }, CardStack::Type::Normal);
+    m_stacks[Pile6] = CardStack({ 10 + 5 * Card::width + 50, 10 + Card::height + 10 }, CardStack::Type::Normal);
+    m_stacks[Pile7] = CardStack({ 10 + 6 * Card::width + 60, 10 + Card::height + 10 }, CardStack::Type::Normal);
 
     m_timer = Core::Timer::construct(1000 / 60, [&]() { tick(window); });
     m_timer->stop();
@@ -66,7 +66,7 @@ static float rand_float()
 
 static void make_pile(NonnullRefPtrVector<Card>& cards, CardStack& stack, uint8_t count)
 {
-    for (int i = 1; i < count; ++i) {
+    for (uint8_t i = 1; i < count; ++i) {
         auto card = cards.take_last();
         card->set_upside_down(true);
         stack.push(card);
@@ -81,10 +81,9 @@ void SolitaireWidget::tick(GUI::Window& window)
         return;
 
     if (m_game_over_animation) {
-        if (m_animation.card()->position().x() > SolitaireWidget::width
-            || m_animation.card()->rect().right() < 0) {
+        ASSERT(!m_animation.card().is_null());
+        if (m_animation.card()->position().x() > SolitaireWidget::width || m_animation.card()->rect().right() < 0)
             create_new_animation_card();
-        }
 
         m_animation.tick();
     }
@@ -141,7 +140,7 @@ void SolitaireWidget::setup()
     }
 
     srand(time(nullptr));
-    for (int i = 0; i < 200; ++i)
+    for (uint8_t i = 0; i < 200; ++i)
         cards.append(cards.take(rand() % cards.size()));
 
     make_pile(cards, stack(Pile1), 1);
@@ -415,7 +414,7 @@ void SolitaireWidget::paint_event(GUI::PaintEvent& event)
                 focused_card.save_old_position();
             }
         }
-    } else if (m_animation.card() != nullptr)
+    } else if (!m_animation.card().is_null())
         m_animation.card()->draw(painter);
 
     m_repaint_all = true;
diff --git a/Games/Solitaire/SolitaireWidget.h b/Games/Solitaire/SolitaireWidget.h
index ac9bbd109cb7..a1b18ee819be 100644
--- a/Games/Solitaire/SolitaireWidget.h
+++ b/Games/Solitaire/SolitaireWidget.h
@@ -56,15 +56,14 @@ class SolitaireWidget final : public GUI::Widget {
         {
         }
 
-        Card* card() { return m_animation_card; }
+        RefPtr<Card> card() { return m_animation_card; }
 
         void tick()
         {
             ASSERT(!m_animation_card.is_null());
             m_y_velocity += m_gravity;
 
-            if (m_animation_card->position().y() + Card::height + m_y_velocity > SolitaireWidget::height + 1
-                && m_y_velocity > 0) {
+            if (m_animation_card->position().y() + Card::height + m_y_velocity > SolitaireWidget::height + 1 && m_y_velocity > 0) {
                 m_y_velocity = min((m_y_velocity * -m_bouncyness), -8.f);
                 m_animation_card->rect().set_y(SolitaireWidget::height - Card::height);
                 m_animation_card->rect().move_by(m_x_velocity, 0);
@@ -107,7 +106,7 @@ class SolitaireWidget final : public GUI::Widget {
     void check_for_game_over();
     void tick(GUI::Window&);
 
-    inline CardStack& stack(StackLocation location)
+    ALWAYS_INLINE CardStack& stack(StackLocation location)
     {
         return m_stacks[location];
     }"
8ccd8b4a6f7f06d591f1232341b71ab92c87d12e,2021-01-21 01:30:27,Nico Weber,libjs: Include <typeinfo> in AST.cpp,False,Include <typeinfo> in AST.cpp,libjs,"diff --git a/Userland/Libraries/LibJS/AST.cpp b/Userland/Libraries/LibJS/AST.cpp
index 13e63e40846e..2fb0ee13649c 100644
--- a/Userland/Libraries/LibJS/AST.cpp
+++ b/Userland/Libraries/LibJS/AST.cpp
@@ -49,6 +49,7 @@
 #include <LibJS/Runtime/Shape.h>
 #include <LibJS/Runtime/StringObject.h>
 #include <LibJS/Runtime/WithScope.h>
+#include <typeinfo>
 
 namespace JS {"
5f2f31861c60bdbe65014961e812dbf3411e638f,2020-11-24 21:12:01,Andreas Kling,kernel: Use a doubly-linked list for the BlockBasedFS cache,False,Use a doubly-linked list for the BlockBasedFS cache,kernel,"diff --git a/Kernel/FileSystem/BlockBasedFileSystem.cpp b/Kernel/FileSystem/BlockBasedFileSystem.cpp
index c1bd66485156..ee09e56be2a5 100644
--- a/Kernel/FileSystem/BlockBasedFileSystem.cpp
+++ b/Kernel/FileSystem/BlockBasedFileSystem.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/IntrusiveList.h>
 #include <Kernel/FileSystem/BlockBasedFileSystem.h>
 #include <Kernel/Process.h>
 
@@ -32,12 +33,10 @@
 namespace Kernel {
 
 struct CacheEntry {
-    time_t timestamp { 0 };
+    IntrusiveListNode list_node;
     u32 block_index { 0 };
     u8* data { nullptr };
     bool has_data { false };
-    bool is_dirty { false };
-    bool is_used { false };
 };
 
 class DiskCache {
@@ -49,6 +48,7 @@ class DiskCache {
     {
         for (size_t i = 0; i < m_entry_count; ++i) {
             entries()[i].data = m_cached_block_data.data() + i * m_fs.block_size();
+            m_clean_list.append(entries()[i]);
         }
     }
 
@@ -57,29 +57,33 @@ class DiskCache {
     bool is_dirty() const { return m_dirty; }
     void set_dirty(bool b) { m_dirty = b; }
 
-    CacheEntry& get(u32 block_index) const
+    void mark_all_clean()
+    {
+        while (auto* entry = m_dirty_list.first())
+            m_clean_list.prepend(*entry);
+        m_dirty = false;
+    }
+
+    void mark_dirty(CacheEntry& entry)
+    {
+        m_dirty_list.prepend(entry);
+        m_dirty = true;
+    }
+
+    void mark_clean(CacheEntry& entry)
     {
-        auto now = kgettimeofday().tv_sec;
+        m_clean_list.prepend(entry);
+    }
 
-        if (auto it = m_map.find(block_index); it != m_map.end()) {
-            auto& entry = const_cast<CacheEntry&>(entries()[it->value]);
+    CacheEntry& get(u32 block_index) const
+    {
+        if (auto it = m_hash.find(block_index); it != m_hash.end()) {
+            auto& entry = const_cast<CacheEntry&>(*it->value);
             ASSERT(entry.block_index == block_index);
-            entry.timestamp = now;
             return entry;
         }
 
-        Optional<size_t> oldest_clean_index;
-        for (size_t i = 0; i < m_entry_count; ++i) {
-            auto& entry = const_cast<CacheEntry&>(entries()[i]);
-            ASSERT(!entry.is_used || entry.block_index != block_index);
-            if (!entry.is_dirty) {
-                if (!oldest_clean_index.has_value())
-                    oldest_clean_index = i;
-                else if (entry.timestamp < entries()[oldest_clean_index.value()].timestamp)
-                    oldest_clean_index = i;
-            }
-        }
-        if (!oldest_clean_index.has_value()) {
+        if (m_clean_list.is_empty()) {
             // Not a single clean entry! Flush writes and try again.
             // NOTE: We want to make sure we only call FileBackedFS flush here,
             //       not some FileBackedFS subclass flush!
@@ -87,21 +91,16 @@ class DiskCache {
             return get(block_index);
         }
 
-        // Replace the oldest clean entry.
-        auto& new_entry = const_cast<CacheEntry&>(entries()[oldest_clean_index.value()]);
-
-        // If this entry was occupied, remove the previous mapping from the fast lookup table.
-        if (new_entry.block_index)
-            m_map.remove(new_entry.block_index);
+        ASSERT(m_clean_list.last());
+        auto& new_entry = *m_clean_list.last();
+        m_clean_list.prepend(new_entry);
 
-        // Create a fast lookup mapping from the block index to this entry.
-        m_map.set(block_index, oldest_clean_index.value());
+        m_hash.remove(new_entry.block_index);
+        m_hash.set(block_index, &new_entry);
 
-        new_entry.timestamp = now;
         new_entry.block_index = block_index;
         new_entry.has_data = false;
-        new_entry.is_dirty = false;
-        new_entry.is_used = true;
+
         return new_entry;
     }
 
@@ -109,16 +108,25 @@ class DiskCache {
     CacheEntry* entries() { return (CacheEntry*)m_entries.data(); }
 
     template<typename Callback>
-    void for_each_entry(Callback callback)
+    void for_each_clean_entry(Callback callback)
+    {
+        for (auto& entry : m_clean_list)
+            callback(entry);
+    }
+
+    template<typename Callback>
+    void for_each_dirty_entry(Callback callback)
     {
-        for (size_t i = 0; i < m_entry_count; ++i)
-            callback(entries()[i]);
+        for (auto& entry : m_dirty_list)
+            callback(entry);
     }
 
 private:
     BlockBasedFS& m_fs;
-    mutable HashMap<u32, u32> m_map;
     size_t m_entry_count { 10000 };
+    mutable HashMap<u32, CacheEntry*> m_hash;
+    mutable IntrusiveList<CacheEntry, &CacheEntry::list_node> m_clean_list;
+    mutable IntrusiveList<CacheEntry, &CacheEntry::list_node> m_dirty_list;
     KBuffer m_cached_block_data;
     KBuffer m_entries;
     bool m_dirty { false };
@@ -160,10 +168,9 @@ int BlockBasedFS::write_block(unsigned index, const UserOrKernelBuffer& data, si
     }
     if (!data.read(entry.data + offset, count))
         return -EFAULT;
-    entry.is_dirty = true;
-    entry.has_data = true;
 
-    cache().set_dirty(true);
+    cache().mark_dirty(entry);
+    entry.has_data = true;
     return 0;
 }
 
@@ -276,16 +283,21 @@ void BlockBasedFS::flush_specific_block_if_needed(unsigned index)
     LOCKER(m_lock);
     if (!cache().is_dirty())
         return;
-    cache().for_each_entry([&](CacheEntry& entry) {
-        if (entry.is_dirty && entry.block_index == index) {
+    Vector<CacheEntry*, 32> cleaned_entries;
+    cache().for_each_dirty_entry([&](CacheEntry& entry) {
+        if (entry.block_index != index) {
             u32 base_offset = static_cast<u32>(entry.block_index) * static_cast<u32>(block_size());
             file_description().seek(base_offset, SEEK_SET);
             // FIXME: Should this error path be surfaced somehow?
             auto entry_data_buffer = UserOrKernelBuffer::for_kernel_buffer(entry.data);
             (void)file_description().write(entry_data_buffer, block_size());
-            entry.is_dirty = false;
+            cleaned_entries.append(&entry);
         }
     });
+    // NOTE: We make a separate pass to mark entries clean since marking them clean
+    //       moves them out of the dirty list which would disturb the iteration above.
+    for (auto* entry : cleaned_entries)
+        cache().mark_clean(*entry);
 }
 
 void BlockBasedFS::flush_writes_impl()
@@ -294,18 +306,15 @@ void BlockBasedFS::flush_writes_impl()
     if (!cache().is_dirty())
         return;
     u32 count = 0;
-    cache().for_each_entry([&](CacheEntry& entry) {
-        if (!entry.is_dirty)
-            return;
+    cache().for_each_dirty_entry([&](CacheEntry& entry) {
         u32 base_offset = static_cast<u32>(entry.block_index) * static_cast<u32>(block_size());
         file_description().seek(base_offset, SEEK_SET);
         // FIXME: Should this error path be surfaced somehow?
         auto entry_data_buffer = UserOrKernelBuffer::for_kernel_buffer(entry.data);
         (void)file_description().write(entry_data_buffer, block_size());
         ++count;
-        entry.is_dirty = false;
     });
-    cache().set_dirty(false);
+    cache().mark_all_clean();
     dbg() << class_name() << "": Flushed "" << count << "" blocks to disk"";
 }"
37df4bbd9060fdc08d0632d06b167e9bae36a0f8,2020-12-21 04:45:44,Sahan Fernando,ak: Generalize AK::String::to_int() for more types,False,Generalize AK::String::to_int() for more types,ak,"diff --git a/AK/FlyString.cpp b/AK/FlyString.cpp
index 5736329fdb98..adbe1928989b 100644
--- a/AK/FlyString.cpp
+++ b/AK/FlyString.cpp
@@ -85,11 +85,28 @@ FlyString::FlyString(const char* string)
 {
 }
 
-Optional<int> FlyString::to_int() const
+template<typename T>
+Optional<T> FlyString::to_int() const
 {
-    return StringUtils::convert_to_int(view());
+    return StringUtils::convert_to_int<T>(view());
 }
 
+template Optional<i8> FlyString::to_int() const;
+template Optional<i16> FlyString::to_int() const;
+template Optional<i32> FlyString::to_int() const;
+template Optional<i64> FlyString::to_int() const;
+
+template<typename T>
+Optional<T> FlyString::to_uint() const
+{
+    return StringUtils::convert_to_uint<T>(view());
+}
+
+template Optional<u8> FlyString::to_uint() const;
+template Optional<u16> FlyString::to_uint() const;
+template Optional<u32> FlyString::to_uint() const;
+template Optional<u64> FlyString::to_uint() const;
+
 bool FlyString::equals_ignoring_case(const StringView& other) const
 {
     return StringUtils::equals_ignoring_case(view(), other);
diff --git a/AK/FlyString.h b/AK/FlyString.h
index f69196fd5dc5..8752acaa0165 100644
--- a/AK/FlyString.h
+++ b/AK/FlyString.h
@@ -82,7 +82,10 @@ class FlyString {
 
     FlyString to_lowercase() const;
 
-    Optional<int> to_int() const;
+    template<typename T = int>
+    Optional<T> to_int() const;
+    template<typename T = unsigned>
+    Optional<T> to_uint() const;
 
     bool equals_ignoring_case(const StringView&) const;
     bool starts_with(const StringView&, CaseSensitivity = CaseSensitivity::CaseSensitive) const;
diff --git a/AK/String.cpp b/AK/String.cpp
index c7315f2b5b17..355371e4a9a5 100644
--- a/AK/String.cpp
+++ b/AK/String.cpp
@@ -217,16 +217,28 @@ ByteBuffer String::to_byte_buffer() const
     return ByteBuffer::copy(reinterpret_cast<const u8*>(characters()), length());
 }
 
-Optional<int> String::to_int() const
+template<typename T>
+Optional<T> String::to_int() const
 {
-    return StringUtils::convert_to_int(view());
+    return StringUtils::convert_to_int<T>(view());
 }
 
-Optional<unsigned> String::to_uint() const
+template Optional<i8> String::to_int() const;
+template Optional<i16> String::to_int() const;
+template Optional<i32> String::to_int() const;
+template Optional<i64> String::to_int() const;
+
+template<typename T>
+Optional<T> String::to_uint() const
 {
-    return StringUtils::convert_to_uint(view());
+    return StringUtils::convert_to_uint<T>(view());
 }
 
+template Optional<u8> String::to_uint() const;
+template Optional<u16> String::to_uint() const;
+template Optional<u32> String::to_uint() const;
+template Optional<u64> String::to_uint() const;
+
 template<typename T>
 String String::number(T value) { return formatted(""{}"", value); }
 
diff --git a/AK/String.h b/AK/String.h
index edeceeb87bda..c30f8bb715b8 100644
--- a/AK/String.h
+++ b/AK/String.h
@@ -114,8 +114,10 @@ class String {
     bool matches(const StringView& mask, CaseSensitivity = CaseSensitivity::CaseInsensitive) const;
     bool matches(const StringView& mask, Vector<MaskSpan>&, CaseSensitivity = CaseSensitivity::CaseInsensitive) const;
 
-    Optional<int> to_int() const;
-    Optional<unsigned> to_uint() const;
+    template<typename T = int>
+    Optional<T> to_int() const;
+    template<typename T = unsigned>
+    Optional<T> to_uint() const;
 
     String to_lowercase() const;
     String to_uppercase() const;
diff --git a/AK/StringUtils.cpp b/AK/StringUtils.cpp
index adca8ca11fed..5310476d83a3 100644
--- a/AK/StringUtils.cpp
+++ b/AK/StringUtils.cpp
@@ -96,7 +96,8 @@ bool matches(const StringView& str, const StringView& mask, CaseSensitivity case
     return string_ptr == string_end && mask_ptr == mask_end;
 }
 
-Optional<int> convert_to_int(const StringView& str)
+template<typename T>
+Optional<T> convert_to_int(const StringView& str)
 {
     auto str_trimmed = str.trim_whitespace();
     if (str_trimmed.is_empty())
@@ -113,7 +114,7 @@ Optional<int> convert_to_int(const StringView& str)
         negative = (characters[0] == '-');
     }
 
-    int value = 0;
+    T value = 0;
     for (; i < str_trimmed.length(); i++) {
         if (characters[i] < '0' || characters[i] > '9')
             return {};
@@ -123,13 +124,19 @@ Optional<int> convert_to_int(const StringView& str)
     return negative ? -value : value;
 }
 
-Optional<unsigned> convert_to_uint(const StringView& str)
+template Optional<i8> convert_to_int(const StringView& str);
+template Optional<i16> convert_to_int(const StringView& str);
+template Optional<i32> convert_to_int(const StringView& str);
+template Optional<i64> convert_to_int(const StringView& str);
+
+template<typename T>
+Optional<T> convert_to_uint(const StringView& str)
 {
     auto str_trimmed = str.trim_whitespace();
     if (str_trimmed.is_empty())
         return {};
 
-    unsigned value = 0;
+    T value = 0;
     const auto characters = str_trimmed.characters_without_null_termination();
 
     for (size_t i = 0; i < str_trimmed.length(); i++) {
@@ -142,13 +149,19 @@ Optional<unsigned> convert_to_uint(const StringView& str)
     return value;
 }
 
-Optional<unsigned> convert_to_uint_from_hex(const StringView& str)
+template Optional<u8> convert_to_uint(const StringView& str);
+template Optional<u16> convert_to_uint(const StringView& str);
+template Optional<u32> convert_to_uint(const StringView& str);
+template Optional<u64> convert_to_uint(const StringView& str);
+
+template<typename T>
+Optional<T> convert_to_uint_from_hex(const StringView& str)
 {
     auto str_trimmed = str.trim_whitespace();
     if (str_trimmed.is_empty())
         return {};
 
-    unsigned value = 0;
+    T value = 0;
     const auto count = str_trimmed.length();
 
     for (size_t i = 0; i < count; i++) {
@@ -170,6 +183,11 @@ Optional<unsigned> convert_to_uint_from_hex(const StringView& str)
     return value;
 }
 
+template Optional<u8> convert_to_uint_from_hex(const StringView& str);
+template Optional<u16> convert_to_uint_from_hex(const StringView& str);
+template Optional<u32> convert_to_uint_from_hex(const StringView& str);
+template Optional<u64> convert_to_uint_from_hex(const StringView& str);
+
 static inline char to_lowercase(char c)
 {
     if (c >= 'A' && c <= 'Z')
diff --git a/AK/StringUtils.h b/AK/StringUtils.h
index 849be54d18b1..e2b5e4430dde 100644
--- a/AK/StringUtils.h
+++ b/AK/StringUtils.h
@@ -59,9 +59,12 @@ struct MaskSpan {
 namespace StringUtils {
 
 bool matches(const StringView& str, const StringView& mask, CaseSensitivity = CaseSensitivity::CaseInsensitive, Vector<MaskSpan>* match_spans = nullptr);
-Optional<int> convert_to_int(const StringView&);
-Optional<unsigned> convert_to_uint(const StringView&);
-Optional<unsigned> convert_to_uint_from_hex(const StringView&);
+template<typename T = int>
+Optional<T> convert_to_int(const StringView&);
+template<typename T = unsigned>
+Optional<T> convert_to_uint(const StringView&);
+template<typename T = unsigned>
+Optional<T> convert_to_uint_from_hex(const StringView&);
 bool equals_ignoring_case(const StringView&, const StringView&);
 bool ends_with(const StringView& a, const StringView& b, CaseSensitivity);
 bool starts_with(const StringView&, const StringView&, CaseSensitivity);
diff --git a/AK/StringView.cpp b/AK/StringView.cpp
index 205ed239aff3..f1ee2dbb8698 100644
--- a/AK/StringView.cpp
+++ b/AK/StringView.cpp
@@ -222,16 +222,28 @@ StringView StringView::substring_view_starting_after_substring(const StringView&
     return { remaining_characters, remaining_length };
 }
 
-Optional<int> StringView::to_int() const
+template<typename T>
+Optional<T> StringView::to_int() const
 {
-    return StringUtils::convert_to_int(*this);
+    return StringUtils::convert_to_int<T>(*this);
 }
 
-Optional<unsigned> StringView::to_uint() const
+template Optional<i8> StringView::to_int() const;
+template Optional<i16> StringView::to_int() const;
+template Optional<i32> StringView::to_int() const;
+template Optional<i64> StringView::to_int() const;
+
+template<typename T>
+Optional<T> StringView::to_uint() const
 {
-    return StringUtils::convert_to_uint(*this);
+    return StringUtils::convert_to_uint<T>(*this);
 }
 
+template Optional<u8> StringView::to_uint() const;
+template Optional<u16> StringView::to_uint() const;
+template Optional<u32> StringView::to_uint() const;
+template Optional<u64> StringView::to_uint() const;
+
 unsigned StringView::hash() const
 {
     if (is_empty())
diff --git a/AK/StringView.h b/AK/StringView.h
index 99f03beaa56c..1b90b7ba8152 100644
--- a/AK/StringView.h
+++ b/AK/StringView.h
@@ -111,8 +111,10 @@ class StringView {
     // following newline."".
     Vector<StringView> lines(bool consider_cr = true) const;
 
-    Optional<int> to_int() const;
-    Optional<unsigned> to_uint() const;
+    template<typename T = int>
+    Optional<T> to_int() const;
+    template<typename T = unsigned>
+    Optional<T> to_uint() const;
 
     // Create a new substring view of this string view, starting either at the beginning of
     // the given substring view, or after its end, and continuing until the end of this string"
0930e2323b4399a9abb742947817d7547380ce07,2020-09-29 01:54:27,Andreas Kling,kernel: Remove unnecessary capture in sys$execve(),False,Remove unnecessary capture in sys$execve(),kernel,"diff --git a/Kernel/Syscalls/execve.cpp b/Kernel/Syscalls/execve.cpp
index 03d1597ebc46..ac8492745dcc 100644
--- a/Kernel/Syscalls/execve.cpp
+++ b/Kernel/Syscalls/execve.cpp
@@ -578,7 +578,7 @@ int Process::sys$execve(Userspace<const Syscall::SC_execve_params*> user_params)
         path = path_arg.value();
     }
 
-    auto copy_user_strings = [this](const auto& list, auto& output) {
+    auto copy_user_strings = [](const auto& list, auto& output) {
         if (!list.length)
             return true;
         Checked size = sizeof(list.length);"
006f5498dec856c9586f382b9ce96574c86d19cb,2021-06-12 23:45:01,Matthew Olsson,libpdf: Add support for the CalRGB ColorSpace,False,Add support for the CalRGB ColorSpace,libpdf,"diff --git a/Userland/Libraries/LibPDF/ColorSpace.cpp b/Userland/Libraries/LibPDF/ColorSpace.cpp
index 1651c3fff8b8..fba6b6c45364 100644
--- a/Userland/Libraries/LibPDF/ColorSpace.cpp
+++ b/Userland/Libraries/LibPDF/ColorSpace.cpp
@@ -53,4 +53,174 @@ Color DeviceCMYKColorSpace::color(const Vector<Value>& arguments) const
     return Color::from_cmyk(c, m, y, k);
 }
 
+RefPtr<CalRGBColorSpace> CalRGBColorSpace::create(RefPtr<Document> document, Vector<Value>&& parameters)
+{
+    if (parameters.size() != 1)
+        return {};
+
+    auto param = parameters[0];
+    if (!param.is_object() || !param.as_object()->is_dict())
+        return {};
+
+    auto dict = object_cast<DictObject>(param.as_object());
+    if (!dict->contains(CommonNames::WhitePoint))
+        return {};
+
+    auto white_point_array = dict->get_array(document, CommonNames::WhitePoint);
+    if (white_point_array->size() != 3)
+        return {};
+
+    auto color_space = adopt_ref(*new CalRGBColorSpace());
+
+    color_space->m_whitepoint[0] = white_point_array->at(0).to_float();
+    color_space->m_whitepoint[1] = white_point_array->at(1).to_float();
+    color_space->m_whitepoint[2] = white_point_array->at(2).to_float();
+
+    if (color_space->m_whitepoint[1] != 1.0f)
+        return {};
+
+    if (dict->contains(CommonNames::BlackPoint)) {
+        auto black_point_array = dict->get_array(document, CommonNames::BlackPoint);
+        if (black_point_array->size() == 3) {
+            color_space->m_blackpoint[0] = black_point_array->at(0).to_float();
+            color_space->m_blackpoint[1] = black_point_array->at(1).to_float();
+            color_space->m_blackpoint[2] = black_point_array->at(2).to_float();
+        }
+    }
+
+    if (dict->contains(CommonNames::Gamma)) {
+        auto gamma_array = dict->get_array(document, CommonNames::Gamma);
+        if (gamma_array->size() == 3) {
+            color_space->m_gamma[0] = gamma_array->at(0).to_float();
+            color_space->m_gamma[1] = gamma_array->at(1).to_float();
+            color_space->m_gamma[2] = gamma_array->at(2).to_float();
+        }
+    }
+
+    if (dict->contains(CommonNames::Matrix)) {
+        auto matrix_array = dict->get_array(document, CommonNames::Matrix);
+        if (matrix_array->size() == 3) {
+            color_space->m_matrix[0] = matrix_array->at(0).to_float();
+            color_space->m_matrix[1] = matrix_array->at(1).to_float();
+            color_space->m_matrix[2] = matrix_array->at(2).to_float();
+            color_space->m_matrix[3] = matrix_array->at(3).to_float();
+            color_space->m_matrix[4] = matrix_array->at(4).to_float();
+            color_space->m_matrix[5] = matrix_array->at(5).to_float();
+            color_space->m_matrix[6] = matrix_array->at(6).to_float();
+            color_space->m_matrix[7] = matrix_array->at(7).to_float();
+            color_space->m_matrix[8] = matrix_array->at(8).to_float();
+        }
+    }
+
+    return color_space;
+}
+
+constexpr Array<float, 3> matrix_multiply(Array<float, 9> a, Array<float, 3> b)
+{
+    return Array<float, 3> {
+        a[0] * b[0] + a[1] * b[1] + a[2] * b[2],
+        a[3] * b[0] + a[4] * b[1] + a[5] * b[2],
+        a[6] * b[0] + a[7] * b[1] + a[8] * b[2]
+    };
+}
+
+// Converts to a flat XYZ space with white point = (1, 1, 1)
+// Step 2 of https://www.adobe.com/content/dam/acom/en/devnet/photoshop/sdk/AdobeBPC.pdf
+constexpr Array<float, 3> flatten_and_normalize_whitepoint(Array<float, 3> whitepoint, Array<float, 3> xyz)
+{
+    VERIFY(whitepoint[1] == 1.0f);
+
+    return {
+        (1.0f / whitepoint[0]) * xyz[0],
+        xyz[1],
+        (1.0f / whitepoint[2]) * xyz[2],
+    };
+}
+
+constexpr float decode_l(float input)
+{
+    constexpr float decode_l_scaling_constant = 0.00110705646f; // (((8 + 16) / 116) ^ 3) / 8
+
+    if (input < 0.0f)
+        return -decode_l(-input);
+    if (input >= 0.0f && input <= 8.0f)
+        return input * decode_l_scaling_constant;
+    return powf(((input + 16.0f) / 116.0f), 3.0f);
+}
+
+constexpr Array<float, 3> scale_black_point(Array<float, 3> blackpoint, Array<float, 3> xyz)
+{
+    auto y_dst = decode_l(0); // DestinationBlackPoint is just [0, 0, 0]
+    auto y_src = decode_l(blackpoint[0]);
+    auto scale = (1 - y_dst) / (1 - y_src);
+    auto offset = 1 - scale;
+
+    return {
+        xyz[0] * scale + offset,
+        xyz[1] * scale + offset,
+        xyz[2] * scale + offset,
+    };
+}
+
+// https://en.wikipedia.org/wiki/Illuminant_D65
+constexpr Array<float, 3> convert_to_d65(Array<float, 3> whitepoint, Array<float, 3> xyz)
+{
+    constexpr float d65x = 0.95047f;
+    constexpr float d65y = 1.0f;
+    constexpr float d65z = 1.08883f;
+
+    return {
+        (xyz[0] * d65x) / whitepoint[0],
+        (xyz[1] * d65y) / whitepoint[1],
+        (xyz[2] * d65z) / whitepoint[2],
+    };
+}
+
+// https://en.wikipedia.org/wiki/SRGB
+constexpr Array<float, 3> convert_to_srgb(Array<float, 3> xyz)
+{
+    // See the sRGB D65 [M]^-1 matrix in the following page
+    // http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html
+    constexpr Array<float, 9> conversion_matrix = {
+        3.2404542,
+        -1.5371385,
+        -0.4985314,
+        -0.969266,
+        1.8760108,
+        0.0415560,
+        0.0556434,
+        -0.2040259,
+        1.0572252,
+    };
+
+    return matrix_multiply(conversion_matrix, xyz);
+}
+
+Color CalRGBColorSpace::color(const Vector<Value>& arguments) const
+{
+    VERIFY(arguments.size() == 3);
+    auto a = clamp(arguments[0].to_float(), 0.0f, 1.0f);
+    auto b = clamp(arguments[1].to_float(), 0.0f, 1.0f);
+    auto c = clamp(arguments[2].to_float(), 0.0f, 1.0f);
+
+    auto agr = powf(a, m_gamma[0]);
+    auto bgg = powf(b, m_gamma[1]);
+    auto cgb = powf(c, m_gamma[2]);
+
+    auto x = m_matrix[0] * agr + m_matrix[3] * bgg + m_matrix[6] * cgb;
+    auto y = m_matrix[1] * agr + m_matrix[4] * bgg + m_matrix[7] * cgb;
+    auto z = m_matrix[2] * agr + m_matrix[5] * bgg + m_matrix[8] * cgb;
+
+    auto flattened_xyz = flatten_and_normalize_whitepoint(m_whitepoint, { x, y, z });
+    auto scaled_black_point_xyz = scale_black_point(m_blackpoint, flattened_xyz);
+    auto d65_normalized = convert_to_d65(m_whitepoint, scaled_black_point_xyz);
+    auto srgb = convert_to_srgb(d65_normalized);
+
+    auto red = static_cast<u8>(srgb[0] * 255.0f);
+    auto green = static_cast<u8>(srgb[1] * 255.0f);
+    auto blue = static_cast<u8>(srgb[2] * 255.0f);
+
+    return Color(red, green, blue);
+}
+
 }
diff --git a/Userland/Libraries/LibPDF/ColorSpace.h b/Userland/Libraries/LibPDF/ColorSpace.h
index cea624a6ac95..90fa47977547 100644
--- a/Userland/Libraries/LibPDF/ColorSpace.h
+++ b/Userland/Libraries/LibPDF/ColorSpace.h
@@ -69,4 +69,20 @@ class DeviceCMYKColorSpace final : public ColorSpace {
     DeviceCMYKColorSpace() = default;
 };
 
+class CalRGBColorSpace final : public ColorSpace {
+public:
+    static RefPtr<CalRGBColorSpace> create(RefPtr<Document>, Vector<Value>&& parameters);
+    virtual ~CalRGBColorSpace() override = default;
+
+    virtual Color color(const Vector<Value>& arguments) const override;
+
+private:
+    CalRGBColorSpace() = default;
+
+    Array<float, 3> m_whitepoint { 0, 0, 0 };
+    Array<float, 3> m_blackpoint { 0, 0, 0 };
+    Array<float, 3> m_gamma { 1, 1, 1 };
+    Array<float, 9> m_matrix { 1, 0, 0, 0, 1, 0, 0, 0, 1 };
+};
+
 }
diff --git a/Userland/Libraries/LibPDF/Renderer.cpp b/Userland/Libraries/LibPDF/Renderer.cpp
index 009b660d0675..814869c3ebc4 100644
--- a/Userland/Libraries/LibPDF/Renderer.cpp
+++ b/Userland/Libraries/LibPDF/Renderer.cpp
@@ -517,6 +517,25 @@ RefPtr<ColorSpace> Renderer::get_color_space(const Value& value)
         return DeviceRGBColorSpace::the();
     if (name == CommonNames::DeviceCMYK)
         return DeviceCMYKColorSpace::the();
+    if (name == CommonNames::Pattern)
+        TODO();
+
+    // The color space is a complex color space with parameters that resides in
+    // the resource dictionary
+    auto color_space_resource_dict = m_page.resources->get_dict(m_document, CommonNames::ColorSpace);
+    if (!color_space_resource_dict->contains(name))
+        TODO();
+
+    auto color_space_array = color_space_resource_dict->get_array(m_document, name);
+    name = color_space_array->get_name_at(m_document, 0)->name();
+
+    Vector<Value> parameters;
+    parameters.ensure_capacity(color_space_array->size() - 1);
+    for (size_t i = 1; i < color_space_array->size(); i++)
+        parameters.unchecked_append(color_space_array->at(i));
+
+    if (name == CommonNames::CalRGB)
+        return CalRGBColorSpace::create(m_document, move(parameters));
 
     TODO();
 }"
b59773de178b336cf76a77fbb46bcbec9f016e74,2022-03-03 19:38:35,Luke Wilde,libweb: Include cookies in form submission,False,Include cookies in form submission,libweb,"diff --git a/Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp
index e934642fe966..5175fcd158c0 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLFormElement.cpp
@@ -116,8 +116,7 @@ void HTMLFormElement::submit_form(RefPtr<HTMLElement> submitter, bool from_submi
         url.set_query(url_encode(parameters, AK::URL::PercentEncodeSet::ApplicationXWWWFormUrlencoded));
     }
 
-    LoadRequest request;
-    request.set_url(url);
+    LoadRequest request = LoadRequest::create_for_url_on_page(url, document().page());
 
     if (effective_method == ""post"") {
         auto body = url_encode(parameters, AK::URL::PercentEncodeSet::ApplicationXWWWFormUrlencoded).to_byte_buffer();"
426cbd8ed379a289d0baa6f706749b57f6e7e712,2023-12-04 00:56:14,Shannon Booth,libweb: Implement AO ReadableByteStreamControllerRespondInClosedState,False,Implement AO ReadableByteStreamControllerRespondInClosedState,libweb,"diff --git a/Userland/Libraries/LibWeb/Streams/AbstractOperations.cpp b/Userland/Libraries/LibWeb/Streams/AbstractOperations.cpp
index a71327dac0a8..6782b0bc4b88 100644
--- a/Userland/Libraries/LibWeb/Streams/AbstractOperations.cpp
+++ b/Userland/Libraries/LibWeb/Streams/AbstractOperations.cpp
@@ -1159,6 +1159,32 @@ WebIDL::ExceptionOr<void> readable_byte_stream_controller_respond_in_readable_st
     return {};
 }
 
+// https://streams.spec.whatwg.org/#readable-byte-stream-controller-respond-in-closed-state
+void readable_byte_stream_controller_respond_in_closed_state(ReadableByteStreamController& controller, PullIntoDescriptor& first_descriptor)
+{
+    // 1. Assert: the remainder after dividing firstDescriptor’s bytes filled by firstDescriptor’s element size is 0.
+    VERIFY(first_descriptor.bytes_filled % first_descriptor.element_size == 0);
+
+    // 2. If firstDescriptor’s reader type is ""none"", perform ! ReadableByteStreamControllerShiftPendingPullInto(controller).
+    if (first_descriptor.reader_type == ReaderType::None)
+        readable_byte_stream_controller_shift_pending_pull_into(controller);
+
+    // 3. Let stream be controller.[[stream]].
+    auto& stream = *controller.stream();
+
+    // 4. If ! ReadableStreamHasBYOBReader(stream) is true,
+    if (readable_stream_has_default_reader(stream)) {
+        // 1. While ! ReadableStreamGetNumReadIntoRequests(stream) > 0,
+        while (readable_stream_get_num_read_requests(stream) > 0) {
+            // 1. Let pullIntoDescriptor be ! ReadableByteStreamControllerShiftPendingPullInto(controller).
+            auto pull_into_descriptor = readable_byte_stream_controller_shift_pending_pull_into(controller);
+
+            // 2. Perform ! ReadableByteStreamControllerCommitPullIntoDescriptor(stream, pullIntoDescriptor).
+            readable_byte_stream_controller_commit_pull_into_descriptor(stream, pull_into_descriptor);
+        }
+    }
+}
+
 // https://streams.spec.whatwg.org/#readable-stream-default-controller-error
 void readable_stream_default_controller_error(ReadableStreamDefaultController& controller, JS::Value error)
 {
diff --git a/Userland/Libraries/LibWeb/Streams/AbstractOperations.h b/Userland/Libraries/LibWeb/Streams/AbstractOperations.h
index 90ff20c00029..e94a59572228 100644
--- a/Userland/Libraries/LibWeb/Streams/AbstractOperations.h
+++ b/Userland/Libraries/LibWeb/Streams/AbstractOperations.h
@@ -81,6 +81,7 @@ WebIDL::ExceptionOr<void> set_up_readable_byte_stream_controller_from_underlying
 JS::GCPtr<ReadableStreamBYOBRequest> readable_byte_stream_controller_get_byob_request(JS::NonnullGCPtr<ReadableByteStreamController>);
 
 WebIDL::ExceptionOr<void> readable_byte_stream_controller_respond_in_readable_state(ReadableByteStreamController&, u64 bytes_written, PullIntoDescriptor&);
+void readable_byte_stream_controller_respond_in_closed_state(ReadableByteStreamController&, PullIntoDescriptor&);
 
 WebIDL::ExceptionOr<void> readable_stream_enqueue(ReadableStreamController& controller, JS::Value chunk);
 WebIDL::ExceptionOr<void> readable_byte_stream_controller_enqueue(ReadableByteStreamController& controller, JS::Value chunk);"
d6239b691ffc07f424c237f866859a8172186a44,2021-03-16 03:13:27,Linus Groh,libjs: Throw SyntaxError in eval() when parser has error(s),False,Throw SyntaxError in eval() when parser has error(s),libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp b/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
index bcd06266dd96..2b0a01bcc408 100644
--- a/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
@@ -322,6 +322,12 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::eval)
     JS::Parser parser { JS::Lexer { code } };
     auto program = parser.parse_program();
 
+    if (parser.has_errors()) {
+        auto& error = parser.errors()[0];
+        vm.throw_exception<SyntaxError>(global_object, error.to_string());
+        return {};
+    }
+
     auto& caller_frame = vm.call_stack().at(vm.call_stack().size() - 2);
     TemporaryChange scope_change(vm.call_frame().scope, caller_frame->scope);
 
diff --git a/Userland/Libraries/LibJS/Tests/eval-basic.js b/Userland/Libraries/LibJS/Tests/eval-basic.js
index 955e86dc22d4..e00c7fcbd9cd 100644
--- a/Userland/Libraries/LibJS/Tests/eval-basic.js
+++ b/Userland/Libraries/LibJS/Tests/eval-basic.js
@@ -8,3 +8,12 @@ test(""basic eval() functionality"", () => {
     }
     expect(foo(7)).toBe(12);
 });
+
+test(""syntax error"", () => {
+    expect(() => {
+        eval(""{"");
+    }).toThrowWithMessage(
+        SyntaxError,
+        ""Unexpected token Eof. Expected CurlyClose (line: 1, column: 2)""
+    );
+});"
17597f4681fb7d4e200a021092a351645003f394,2019-10-03 11:47:41,Brandon Scott,libgui: Fix GDirectoryModel lifetime bug.,False,Fix GDirectoryModel lifetime bug.,libgui,"diff --git a/Libraries/LibGUI/GDirectoryModel.cpp b/Libraries/LibGUI/GDirectoryModel.cpp
index 21955a03c5c2..20c80c4c0f81 100644
--- a/Libraries/LibGUI/GDirectoryModel.cpp
+++ b/Libraries/LibGUI/GDirectoryModel.cpp
@@ -126,14 +126,20 @@ bool GDirectoryModel::fetch_thumbnail_for(const Entry& entry)
     s_thumbnail_cache.set(path, nullptr);
     m_thumbnail_progress_total++;
 
+    auto directory_model = make_weak_ptr();
+
     LibThread::BackgroundAction<RefPtr<GraphicsBitmap>>::create(
         [path] {
             return render_thumbnail(path);
         },
 
-        [this, path](auto thumbnail) {
+        [this, path, directory_model](auto thumbnail) {
             s_thumbnail_cache.set(path, move(thumbnail));
 
+            // class was destroyed, no need to update progress or call any event handlers.
+            if (directory_model.is_null())
+                return;
+
             m_thumbnail_progress++;
             if (on_thumbnail_progress)
                 on_thumbnail_progress(m_thumbnail_progress, m_thumbnail_progress_total);
diff --git a/Libraries/LibGUI/GDirectoryModel.h b/Libraries/LibGUI/GDirectoryModel.h
index 5f7ac0304963..3a94e5ff2e99 100644
--- a/Libraries/LibGUI/GDirectoryModel.h
+++ b/Libraries/LibGUI/GDirectoryModel.h
@@ -5,7 +5,8 @@
 #include <LibGUI/GModel.h>
 #include <sys/stat.h>
 
-class GDirectoryModel final : public GModel {
+class GDirectoryModel final : public GModel
+    , public Weakable<GDirectoryModel> {
 public:
     static NonnullRefPtr<GDirectoryModel> create() { return adopt(*new GDirectoryModel); }
     virtual ~GDirectoryModel() override;"
2fb0cede9a15aa4145835229ac589b21f0b58772,2023-11-02 12:07:11,Aliaksandr Kalenik,libweb: Account for box-sizing in grid-items width calculation,False,Account for box-sizing in grid-items width calculation,libweb,"diff --git a/Tests/LibWeb/Layout/expected/grid/item-with-box-sizing-border-box.txt b/Tests/LibWeb/Layout/expected/grid/item-with-box-sizing-border-box.txt
new file mode 100644
index 000000000000..1dada8ab5a9a
--- /dev/null
+++ b/Tests/LibWeb/Layout/expected/grid/item-with-box-sizing-border-box.txt
@@ -0,0 +1,27 @@
+Viewport <#document> at (0,0) content-size 800x600 children: not-inline
+  BlockContainer <html> at (1,1) content-size 798x41.46875 [BFC] children: not-inline
+    BlockContainer <body> at (10,10) content-size 780x23.46875 children: not-inline
+      Box <div.grid> at (11,11) content-size 778x21.46875 [GFC] children: not-inline
+        BlockContainer <div.item> at (112,12) content-size 187x19.46875 [BFC] children: not-inline
+          BlockContainer <div> at (113,13) content-size 185x17.46875 children: inline
+            line 0 width: 29.8125, height: 17.46875, bottom: 17.46875, baseline: 13.53125
+              frag 0 from TextNode start: 0, length: 3, rect: [113,13 29.8125x17.46875]
+                ""One""
+            TextNode <#text>
+        BlockContainer <div.item> at (501,12) content-size 187x19.46875 [BFC] children: not-inline
+          BlockContainer <div> at (502,13) content-size 185x17.46875 children: inline
+            line 0 width: 33.875, height: 17.46875, bottom: 17.46875, baseline: 13.53125
+              frag 0 from TextNode start: 0, length: 3, rect: [502,13 33.875x17.46875]
+                ""Two""
+            TextNode <#text>
+
+ViewportPaintable (Viewport<#document>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x43.46875]
+    PaintableWithLines (BlockContainer<BODY>) [9,9 782x25.46875]
+      PaintableBox (Box<DIV>.grid) [10,10 780x23.46875]
+        PaintableWithLines (BlockContainer<DIV>.item) [11,11 389x21.46875]
+          PaintableWithLines (BlockContainer<DIV>) [112,12 187x19.46875]
+            TextPaintable (TextNode<#text>)
+        PaintableWithLines (BlockContainer<DIV>.item) [400,11 389x21.46875]
+          PaintableWithLines (BlockContainer<DIV>) [501,12 187x19.46875]
+            TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/input/grid/item-with-box-sizing-border-box.html b/Tests/LibWeb/Layout/input/grid/item-with-box-sizing-border-box.html
new file mode 100644
index 000000000000..05c7a17c5ab9
--- /dev/null
+++ b/Tests/LibWeb/Layout/input/grid/item-with-box-sizing-border-box.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html><style type=""text/css"">
+* {
+    border: 1px solid black;
+}
+
+.grid {
+    grid-template-columns: 1fr 1fr;
+    display: grid;
+}
+
+.item {
+    padding: 0 100px;
+    width: 100%;
+    box-sizing: border-box;
+}
+</style><div class=""grid""><div class=""item""><div>One</div></div><div class=""item""><div>Two</div></div></div>
\ No newline at end of file
diff --git a/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp
index 7a96b9735f80..e18edbd4276b 100644
--- a/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp
@@ -1641,18 +1641,21 @@ void GridFormattingContext::resolve_grid_item_widths()
         } else if (computed_width.is_fit_content()) {
             used_alignment = try_compute_width(calculate_fit_content_width(item.box, available_space));
         } else {
-            used_alignment = try_compute_width(computed_width.to_px(grid_container(), containing_block_width));
+            auto width_px = calculate_inner_width(item.box, available_space.width, computed_width).to_px(item.box);
+            used_alignment = try_compute_width(width_px);
         }
 
         if (!should_treat_max_width_as_none(item.box, m_available_space->width)) {
-            auto max_width_alignment = try_compute_width(computed_values.max_width().to_px(grid_container(), containing_block_width));
+            auto max_width_px = calculate_inner_width(item.box, available_space.width, computed_values.max_width()).to_px(item.box);
+            auto max_width_alignment = try_compute_width(max_width_px);
             if (used_alignment.width > max_width_alignment.width) {
                 used_alignment = max_width_alignment;
             }
         }
 
         if (!computed_values.min_width().is_auto()) {
-            auto min_width_alignment = try_compute_width(computed_values.min_width().to_px(grid_container(), containing_block_width));
+            auto min_width_px = calculate_inner_width(item.box, available_space.width, computed_values.min_width()).to_px(item.box);
+            auto min_width_alignment = try_compute_width(min_width_px);
             if (used_alignment.width < min_width_alignment.width) {
                 used_alignment = min_width_alignment;
             }"
1ee78c40aed51a2fcac3cd8456c29359120f90c1,2023-05-13 16:23:49,thankyouverycool,fonteditor: Remove unnecessary call to hide() NewFontDialog,False,Remove unnecessary call to hide() NewFontDialog,fonteditor,"diff --git a/Userland/Applications/FontEditor/MainWidget.cpp b/Userland/Applications/FontEditor/MainWidget.cpp
index 799e69fd8b85..ddf613dabfdf 100644
--- a/Userland/Applications/FontEditor/MainWidget.cpp
+++ b/Userland/Applications/FontEditor/MainWidget.cpp
@@ -116,7 +116,6 @@ ErrorOr<void> MainWidget::create_actions()
         auto new_font_wizard = NewFontDialog::construct(window());
         if (new_font_wizard->exec() != GUI::Dialog::ExecResult::OK)
             return;
-        new_font_wizard->hide();
         auto maybe_font = new_font_wizard->create_font();
         if (maybe_font.is_error())
             return show_error(maybe_font.release_error(), ""Creating new font failed""sv);"
ad7ec2bbc717901ca63b504feff0711975f1f6f6,2019-07-14 13:47:58,Andreas Kling,kernel: Make the create_thread() syscall return the new thread ID.,False,Make the create_thread() syscall return the new thread ID.,kernel,"diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index 7f0581a63c04..2c071bd0f700 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -2631,7 +2631,7 @@ int Process::sys$create_thread(int (*entry)(void*), void* argument)
     thread->make_userspace_stack_for_secondary_thread(argument);
 
     thread->set_state(Thread::State::Runnable);
-    return 0;
+    return thread->tid();
 }
 
 void Process::sys$exit_thread(int code)"
ee7282cbe4873f02514d82a368eacd6841eb2ea2,2023-06-03 09:24:49,Simon Wanner,libweb: Make pseudo-elements inspectable,False,Make pseudo-elements inspectable,libweb,"diff --git a/Userland/Libraries/LibWeb/DOM/Document.cpp b/Userland/Libraries/LibWeb/DOM/Document.cpp
index 321525d278fc..3ed261fd9d46 100644
--- a/Userland/Libraries/LibWeb/DOM/Document.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Document.cpp
@@ -985,18 +985,29 @@ Layout::Viewport* Document::layout_node()
     return static_cast<Layout::Viewport*>(Node::layout_node());
 }
 
-void Document::set_inspected_node(Node* node)
+void Document::set_inspected_node(Node* node, Optional<CSS::Selector::PseudoElement> pseudo_element)
 {
-    if (m_inspected_node.ptr() == node)
+    if (m_inspected_node.ptr() == node && m_inspected_pseudo_element == pseudo_element)
         return;
 
-    if (m_inspected_node && m_inspected_node->layout_node())
-        m_inspected_node->layout_node()->set_needs_display();
+    if (auto layout_node = inspected_layout_node())
+        layout_node->set_needs_display();
 
     m_inspected_node = node;
+    m_inspected_pseudo_element = pseudo_element;
 
-    if (m_inspected_node && m_inspected_node->layout_node())
-        m_inspected_node->layout_node()->set_needs_display();
+    if (auto layout_node = inspected_layout_node())
+        layout_node->set_needs_display();
+}
+
+Layout::Node* Document::inspected_layout_node()
+{
+    if (!m_inspected_node)
+        return nullptr;
+    if (!m_inspected_pseudo_element.has_value() || !m_inspected_node->is_element())
+        return m_inspected_node->layout_node();
+    auto& element = static_cast<Element&>(*m_inspected_node);
+    return element.get_pseudo_element_node(m_inspected_pseudo_element.value());
 }
 
 static Node* find_common_ancestor(Node* a, Node* b)
diff --git a/Userland/Libraries/LibWeb/DOM/Document.h b/Userland/Libraries/LibWeb/DOM/Document.h
index 86aa2c6ba3f0..cacf78351afc 100644
--- a/Userland/Libraries/LibWeb/DOM/Document.h
+++ b/Userland/Libraries/LibWeb/DOM/Document.h
@@ -136,9 +136,11 @@ class Document
     Node* hovered_node() { return m_hovered_node.ptr(); }
     Node const* hovered_node() const { return m_hovered_node.ptr(); }
 
-    void set_inspected_node(Node*);
+    void set_inspected_node(Node*, Optional<CSS::Selector::PseudoElement>);
     Node* inspected_node() { return m_inspected_node.ptr(); }
     Node const* inspected_node() const { return m_inspected_node.ptr(); }
+    Layout::Node* inspected_layout_node();
+    Layout::Node const* inspected_layout_node() const { return const_cast<Document*>(this)->inspected_layout_node(); }
 
     Element* document_element();
     Element const* document_element() const;
@@ -494,6 +496,7 @@ class Document
     JS::GCPtr<CSS::StyleSheetList> m_style_sheets;
     JS::GCPtr<Node> m_hovered_node;
     JS::GCPtr<Node> m_inspected_node;
+    Optional<CSS::Selector::PseudoElement> m_inspected_pseudo_element;
     JS::GCPtr<Node> m_active_favicon;
     WeakPtr<HTML::BrowsingContext> m_browsing_context;
     AK::URL m_url;
diff --git a/Userland/Libraries/LibWeb/Painting/InlinePaintable.cpp b/Userland/Libraries/LibWeb/Painting/InlinePaintable.cpp
index 7421982e7cd3..3766eb7d125b 100644
--- a/Userland/Libraries/LibWeb/Painting/InlinePaintable.cpp
+++ b/Userland/Libraries/LibWeb/Painting/InlinePaintable.cpp
@@ -114,9 +114,7 @@ void InlinePaintable::paint(PaintContext& context, PaintPhase phase) const
         });
     }
 
-    // FIXME: We check for a non-null dom_node(), since pseudo-elements have a null one and were getting
-    //        highlighted incorrectly. A better solution will be needed if we want to inspect them too.
-    if (phase == PaintPhase::Overlay && layout_node().dom_node() && layout_node().document().inspected_node() == layout_node().dom_node()) {
+    if (phase == PaintPhase::Overlay && layout_node().document().inspected_layout_node() == &layout_node()) {
         // FIXME: This paints a double-thick border between adjacent fragments, where ideally there
         //        would be none. Once we implement non-rectangular outlines for the `outline` CSS
         //        property, we can use that here instead.
diff --git a/Userland/Libraries/LibWeb/Painting/MarkerPaintable.cpp b/Userland/Libraries/LibWeb/Painting/MarkerPaintable.cpp
index 106506478c31..aeef6b50fd7e 100644
--- a/Userland/Libraries/LibWeb/Painting/MarkerPaintable.cpp
+++ b/Userland/Libraries/LibWeb/Painting/MarkerPaintable.cpp
@@ -30,6 +30,8 @@ constexpr float sin_60_deg = 0.866025403f;
 
 void MarkerPaintable::paint(PaintContext& context, PaintPhase phase) const
 {
+    if (phase == PaintPhase::Overlay)
+        PaintableBox::paint(context, phase);
     if (phase != PaintPhase::Foreground)
         return;
 
diff --git a/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp b/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
index 4583936d0aed..423d96fac79d 100644
--- a/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
+++ b/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
@@ -169,7 +169,7 @@ void PaintableBox::paint(PaintContext& context, PaintPhase phase) const
     if (phase == PaintPhase::Overlay && should_clip_rect)
         context.painter().restore();
 
-    if (phase == PaintPhase::Overlay && layout_box().dom_node() && layout_box().document().inspected_node() == layout_box().dom_node()) {
+    if (phase == PaintPhase::Overlay && layout_box().document().inspected_layout_node() == &layout_box()) {
         auto content_rect = absolute_rect();
 
         auto margin_box = box_model().margin_box();
@@ -511,7 +511,7 @@ static void paint_text_fragment(PaintContext& context, Layout::TextNode const& t
         auto fragment_absolute_rect = fragment.absolute_rect();
         auto fragment_absolute_device_rect = context.enclosing_device_rect(fragment_absolute_rect);
 
-        if (text_node.document().inspected_node() == &text_node.dom_node())
+        if (text_node.document().inspected_layout_node() == &text_node)
             context.painter().draw_rect(fragment_absolute_device_rect.to_type<int>(), Color::Magenta);
 
         auto text = text_node.text_for_rendering();
diff --git a/Userland/Services/WebContent/ConnectionFromClient.cpp b/Userland/Services/WebContent/ConnectionFromClient.cpp
index a876bd99fc79..ef4a26008af7 100644
--- a/Userland/Services/WebContent/ConnectionFromClient.cpp
+++ b/Userland/Services/WebContent/ConnectionFromClient.cpp
@@ -444,7 +444,7 @@ Messages::WebContentServer::InspectDomNodeResponse ConnectionFromClient::inspect
 
     top_context.for_each_in_inclusive_subtree([&](auto& ctx) {
         if (ctx.active_document() != nullptr) {
-            ctx.active_document()->set_inspected_node(nullptr);
+            ctx.active_document()->set_inspected_node(nullptr, {});
         }
         return IterationDecision::Continue;
     });
@@ -455,8 +455,7 @@ Messages::WebContentServer::InspectDomNodeResponse ConnectionFromClient::inspect
         return { false, """", """", """", """" };
     }
 
-    // FIXME: Pass the pseudo-element here.
-    node->document().set_inspected_node(node);
+    node->document().set_inspected_node(node, pseudo_element);
 
     if (node->is_element()) {
         auto& element = verify_cast<Web::DOM::Element>(*node);"
861d22838d21b56478de616dabb56a5c7bbc8b29,2020-12-15 01:13:25,Andreas Kling,libweb: Virtualize StyleValue equality check,False,Virtualize StyleValue equality check,libweb,"diff --git a/Libraries/LibWeb/CSS/StyleValue.h b/Libraries/LibWeb/CSS/StyleValue.h
index 1d8da443e927..61b119bad172 100644
--- a/Libraries/LibWeb/CSS/StyleValue.h
+++ b/Libraries/LibWeb/CSS/StyleValue.h
@@ -202,6 +202,16 @@ class StyleValue : public RefCounted<StyleValue> {
 
     virtual bool is_auto() const { return false; }
 
+    bool operator==(const StyleValue& other) const { return equals(other); }
+    bool operator!=(const StyleValue& other) const { return !(*this == other); }
+
+    virtual bool equals(const StyleValue& other) const
+    {
+        if (type() != other.type())
+            return false;
+        return to_string() == other.to_string();
+    }
+
 protected:
     explicit StyleValue(Type);
 
@@ -317,6 +327,13 @@ class IdentifierStyleValue final : public StyleValue {
     virtual String to_string() const override;
     virtual Color to_color(const DOM::Document&) const override;
 
+    virtual bool equals(const StyleValue& other) const override
+    {
+        if (type() != other.type())
+            return false;
+        return m_id == static_cast<const IdentifierStyleValue&>(other).m_id;
+    }
+
 private:
     explicit IdentifierStyleValue(CSS::ValueID id)
         : StyleValue(Type::Identifier)"
7cacf5ca5572d4f8075835c8c1055645b2294fe5,2024-12-19 20:55:08,Tim Ledbetter,libweb: Report exceptions when invoking custom element reactions,False,Report exceptions when invoking custom element reactions,libweb,"diff --git a/Libraries/LibWeb/Bindings/MainThreadVM.cpp b/Libraries/LibWeb/Bindings/MainThreadVM.cpp
index 66e4283bca58..2f56b3c0f127 100644
--- a/Libraries/LibWeb/Bindings/MainThreadVM.cpp
+++ b/Libraries/LibWeb/Bindings/MainThreadVM.cpp
@@ -822,12 +822,8 @@ void invoke_custom_element_reactions(Vector<GC::Root<DOM::Element>>& element_que
                 },
                 [&](DOM::CustomElementCallbackReaction& custom_element_callback_reaction) -> void {
                     // -> callback reaction
-                    //      Invoke reaction's callback function with reaction's arguments, and with element as the callback this value.
-                    auto result = WebIDL::invoke_callback(*custom_element_callback_reaction.callback, element.ptr(), custom_element_callback_reaction.arguments);
-                    // FIXME: The error from CustomElementCallbackReaction is supposed
-                    //     to use the new steps for IDL callback error reporting
-                    if (result.is_abrupt())
-                        HTML::report_exception(result, element->realm());
+                    //      Invoke reaction's callback function with reaction's arguments and ""report"", and callback this value set to element.
+                    (void)WebIDL::invoke_callback(*custom_element_callback_reaction.callback, element.ptr(), WebIDL::ExceptionBehavior::Report, custom_element_callback_reaction.arguments);
                 });
         }
     }
diff --git a/Tests/LibWeb/Text/expected/wpt-import/custom-elements/cross-realm-callback-report-exception.txt b/Tests/LibWeb/Text/expected/wpt-import/custom-elements/cross-realm-callback-report-exception.txt
new file mode 100644
index 000000000000..f8866dd7d64e
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/custom-elements/cross-realm-callback-report-exception.txt
@@ -0,0 +1,11 @@
+Harness status: OK
+
+Found 5 tests
+
+4 Pass
+1 Fail
+Fail	constructor
+Pass	connectedCallback
+Pass	disconnectedCallback
+Pass	attributeChangedCallback
+Pass	adoptedCallback
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/input/wpt-import/custom-elements/cross-realm-callback-report-exception.html b/Tests/LibWeb/Text/input/wpt-import/custom-elements/cross-realm-callback-report-exception.html
new file mode 100644
index 000000000000..f20481aa6cb3
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/custom-elements/cross-realm-callback-report-exception.html
@@ -0,0 +1,83 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Exceptions raised in constructors / lifecycle callbacks are reported in their global objects</title>
+<script src=../resources/testharness.js></script>
+<script src=../resources/testharnessreport.js></script>
+<iframe></iframe>
+<iframe></iframe>
+<iframe></iframe>
+<script>
+setup({ allow_uncaught_exception: true });
+
+window.onerror = () => { onerrorCalls.push(""top""); };
+frames[0].onerror = () => { onerrorCalls.push(""frame0""); };
+frames[1].onerror = () => { onerrorCalls.push(""frame1""); };
+frames[2].onerror = () => { onerrorCalls.push(""frame2""); };
+
+const sourceThrowError = `throw new parent.frames[2].Error(""PASS"")`;
+
+test(t => {
+  window.onerrorCalls = [];
+
+  const XFoo = new frames[1].Function(sourceThrowError);
+  frames[0].customElements.define(""x-foo-constructor"", XFoo);
+
+  frames[0].document.createElement(""x-foo-constructor"");
+  assert_array_equals(onerrorCalls, [""frame1""]);
+}, ""constructor"");
+
+test(t => {
+  window.onerrorCalls = [];
+
+  const XFooConnected = class extends frames[0].HTMLElement {};
+  XFooConnected.prototype.connectedCallback = new frames[1].Function(sourceThrowError);
+  frames[0].customElements.define(""x-foo-connected"", XFooConnected);
+
+  const el = frames[0].document.createElement(""x-foo-connected"");
+  frames[0].document.body.append(el);
+
+  assert_array_equals(onerrorCalls, [""frame1""]);
+}, ""connectedCallback"");
+
+test(t => {
+  window.onerrorCalls = [];
+
+  const XFooDisconnected = class extends frames[0].HTMLElement {};
+  XFooDisconnected.prototype.disconnectedCallback = new frames[1].Function(sourceThrowError);
+  frames[0].customElements.define(""x-foo-disconnected"", XFooDisconnected);
+
+  const el = frames[0].document.createElement(""x-foo-disconnected"");
+  frames[0].document.body.append(el);
+  el.remove();
+
+  assert_array_equals(onerrorCalls, [""frame1""]);
+}, ""disconnectedCallback"");
+
+test(t => {
+  window.onerrorCalls = [];
+
+  const XFooAttributeChanged = class extends frames[0].HTMLElement {};
+  XFooAttributeChanged.observedAttributes = [""foo""];
+  XFooAttributeChanged.prototype.attributeChangedCallback = new frames[1].Function(sourceThrowError);
+  frames[0].customElements.define(""x-foo-attribute-changed"", XFooAttributeChanged);
+
+  const el = frames[0].document.createElement(""x-foo-attribute-changed"");
+  frames[0].document.body.append(el);
+  el.setAttribute(""foo"", ""bar"");
+
+  assert_array_equals(onerrorCalls, [""frame1""]);
+}, ""attributeChangedCallback"");
+
+test(t => {
+  window.onerrorCalls = [];
+
+  const XFooAdopted = class extends frames[0].HTMLElement {};
+  XFooAdopted.prototype.adoptedCallback = new frames[1].Function(sourceThrowError);
+  frames[0].customElements.define(""x-foo-adopted"", XFooAdopted);
+
+  const el = frames[0].document.createElement(""x-foo-adopted"");
+  document.body.append(el);
+
+  assert_array_equals(onerrorCalls, [""frame1""]);
+}, ""adoptedCallback"");
+</script>"
c34956839e4c0ce85893cc34856706684216a6b1,2020-08-25 19:51:26,Nico Weber,libgui: Make ScrollBar shift-click use same code path as scrubber click,False,Make ScrollBar shift-click use same code path as scrubber click,libgui,"diff --git a/Libraries/LibGUI/ScrollBar.cpp b/Libraries/LibGUI/ScrollBar.cpp
index 693263609aed..d9f526d653d8 100644
--- a/Libraries/LibGUI/ScrollBar.cpp
+++ b/Libraries/LibGUI/ScrollBar.cpp
@@ -290,6 +290,9 @@ void ScrollBar::mousedown_event(MouseEvent& event)
         update();
         return;
     }
+
+    if (event.shift())
+        scroll_to_position(event.position());
     if (scrubber_rect().contains(event.position())) {
         m_scrubber_in_use = true;
         m_scrubbing = true;
@@ -298,16 +301,10 @@ void ScrollBar::mousedown_event(MouseEvent& event)
         update();
         return;
     }
+    ASSERT(!event.shift());
 
     // FIXME: If scrolling by page, scroll every second or so while mouse is down.
-    if (event.shift())
-        scroll_to_position(event.position());
-    else
-        scroll_by_page(event.position());
-
-    m_scrubbing = true;
-    m_scrub_start_value = value();
-    m_scrub_origin = event.position();
+    scroll_by_page(event.position());
 }
 
 void ScrollBar::mouseup_event(MouseEvent& event)"
c91db6ec97250468f4cbb47e7771a67ed5341a4f,2023-03-25 22:20:36,Marco Cutecchia,kernel: Add an SD card driver for the aarch64 port,False,Add an SD card driver for the aarch64 port,kernel,"diff --git a/Kernel/Arch/aarch64/RPi/SDHostController.cpp b/Kernel/Arch/aarch64/RPi/SDHostController.cpp
new file mode 100644
index 000000000000..cba0e9db52e4
--- /dev/null
+++ b/Kernel/Arch/aarch64/RPi/SDHostController.cpp
@@ -0,0 +1,39 @@
+/*
+ * Copyright (c) 2023, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <AK/Singleton.h>
+#include <Kernel/Arch/aarch64/RPi/GPIO.h>
+#include <Kernel/Arch/aarch64/RPi/MMIO.h>
+#include <Kernel/Arch/aarch64/RPi/SDHostController.h>
+
+namespace Kernel::RPi {
+
+Singleton<SDHostController> s_sdhc;
+
+SDHostController& SDHostController::the()
+{
+    return *s_sdhc;
+}
+
+SDHostController::SDHostController()
+    : ::SDHostController()
+{
+    auto& gpio = GPIO::the();
+    gpio.set_pin_function(21, GPIO::PinFunction::Alternate3); // CD
+    gpio.set_pin_high_detect_enable(21, true);
+
+    gpio.set_pin_function(22, GPIO::PinFunction::Alternate3); // SD1_CLK
+    gpio.set_pin_function(23, GPIO::PinFunction::Alternate3); // SD1_CMD
+
+    gpio.set_pin_function(24, GPIO::PinFunction::Alternate3); // SD1_DAT0
+    gpio.set_pin_function(25, GPIO::PinFunction::Alternate3); // SD1_DAT1
+    gpio.set_pin_function(26, GPIO::PinFunction::Alternate3); // SD1_DAT2
+    gpio.set_pin_function(27, GPIO::PinFunction::Alternate3); // SD1_DAT3
+
+    m_registers = MMIO::the().peripheral<SD::HostControlRegisterMap>(0x30'0000);
+}
+
+}
diff --git a/Kernel/Arch/aarch64/RPi/SDHostController.h b/Kernel/Arch/aarch64/RPi/SDHostController.h
new file mode 100644
index 000000000000..cdd6b9d3b589
--- /dev/null
+++ b/Kernel/Arch/aarch64/RPi/SDHostController.h
@@ -0,0 +1,28 @@
+/*
+ * Copyright (c) 2023, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <Kernel/Storage/SD/Registers.h>
+#include <Kernel/Storage/SD/SDHostController.h>
+
+namespace Kernel::RPi {
+
+class SDHostController : public ::SDHostController {
+public:
+    static SDHostController& the();
+    SDHostController();
+    virtual ~SDHostController() override = default;
+
+protected:
+    // ^SDHostController
+    virtual SD::HostControlRegisterMap volatile* get_register_map_base_address() override { return m_registers; }
+
+private:
+    SD::HostControlRegisterMap volatile* m_registers;
+};
+
+}
diff --git a/Kernel/CMakeLists.txt b/Kernel/CMakeLists.txt
index 1a8715782074..fea4290cae8d 100644
--- a/Kernel/CMakeLists.txt
+++ b/Kernel/CMakeLists.txt
@@ -110,6 +110,8 @@ set(KERNEL_SOURCES
     Storage/NVMe/NVMeQueue.cpp
     Storage/Ramdisk/Controller.cpp
     Storage/Ramdisk/Device.cpp
+    Storage/SD/SDHostController.cpp
+    Storage/SD/SDMemoryCard.cpp
     Storage/DiskPartition.cpp
     Storage/StorageController.cpp
     Storage/StorageDevice.cpp
@@ -436,6 +438,7 @@ elseif(""${SERENITY_ARCH}"" STREQUAL ""aarch64"")
         Arch/aarch64/RPi/InterruptController.cpp
         Arch/aarch64/RPi/Mailbox.cpp
         Arch/aarch64/RPi/MMIO.cpp
+        Arch/aarch64/RPi/SDHostController.cpp
         Arch/aarch64/RPi/Timer.cpp
         Arch/aarch64/RPi/UART.cpp
     )
diff --git a/Kernel/Storage/SD/Commands.h b/Kernel/Storage/SD/Commands.h
new file mode 100644
index 000000000000..aa00e860ad8b
--- /dev/null
+++ b/Kernel/Storage/SD/Commands.h
@@ -0,0 +1,354 @@
+/*
+ * Copyright (c) 2023, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Types.h>
+
+namespace Kernel::SD {
+
+// Relevant Specifications:
+// * (SDHC): SD Host Controller Simplified Specification (https://www.sdcard.org/downloads/pls/)
+// * (PLSS) Physical Layer Simplified Specification (https://www.sdcard.org/downloads/pls/)
+
+// PLSS 4.7.4: ""Detailed Command Description""
+enum class CommandIndex : u8 {
+    GoIdleState = 0,
+    AllSendCid = 2,
+    SendRelativeAddr = 3,
+    AppSetBusWidth = 6,
+    SelectCard = 7,
+    SendIfCond = 8,
+    SendCsd = 9,
+    SetBlockLen = 16,
+    ReadSingleBlock = 17,
+    ReadMultipleBlock = 18,
+    WriteSingleBlock = 24,
+    WriteMultipleBlock = 25,
+    AppSendOpCond = 41,
+    AppSendScr = 51,
+    AppCmd = 55,
+};
+
+enum class CommandType : u8 {
+    Normal,
+    Suspend,
+    Resume,
+    Abort
+};
+
+enum class ResponseType : u8 {
+    NoResponse,
+    ResponseOf136Bits,
+    ResponseOf48Bits,
+    ResponseOf48BitsWithBusy
+};
+
+enum class DataTransferDirection : u8 {
+    HostToCard,
+    CardToHost
+};
+
+enum class SendAutoCommand : u8 {
+    Disabled,
+    Command12,
+    Command23
+};
+
+// SDHC 2.2.5 & 2.2.6: ""Transfer Mode Register"" & ""Command Register""
+union Command {
+    u32 raw;
+
+    struct {
+        u32 reserved0 : 1;
+        u32 block_counter : 1;
+        SendAutoCommand auto_command : 2;
+        DataTransferDirection direction : 1;
+        u32 multiblock : 1;
+        u32 reserved1 : 10;
+        ResponseType response_type : 2;
+        u32 reserved2 : 1;
+        u32 crc_enable : 1;
+        u32 idx_enable : 1;
+        u32 is_data : 1;
+        CommandType type : 2;
+        CommandIndex index : 6;
+        u32 reserved3 : 2;
+    };
+
+    bool requires_dat_line() const
+    {
+        return is_data;
+    }
+
+    bool uses_transfer_complete_interrupt() const
+    {
+        // FIXME: I don't know how to determine this.
+        return false;
+    }
+};
+static_assert(AssertSize<Command, 4>());
+
+namespace Commands {
+
+constexpr Command go_idle_state = {
+    .reserved0 = 0,
+    .block_counter = 0,
+    .auto_command = SendAutoCommand::Disabled,
+    .direction = DataTransferDirection::HostToCard,
+    .multiblock = 0,
+    .reserved1 = 0,
+    .response_type = ResponseType::NoResponse,
+    .reserved2 = 0,
+    .crc_enable = 0,
+    .idx_enable = 0,
+    .is_data = 0,
+    .type = CommandType::Normal,
+    .index = CommandIndex::GoIdleState,
+    .reserved3 = 0
+};
+
+constexpr Command all_send_cid = {
+    .reserved0 = 0,
+    .block_counter = 0,
+    .auto_command = SendAutoCommand::Disabled,
+    .direction = DataTransferDirection::HostToCard,
+    .multiblock = 0,
+    .reserved1 = 0,
+    .response_type = ResponseType::ResponseOf136Bits,
+    .reserved2 = 0,
+    .crc_enable = 1,
+    .idx_enable = 0,
+    .is_data = 0,
+    .type = CommandType::Normal,
+    .index = CommandIndex::AllSendCid,
+    .reserved3 = 0
+};
+
+constexpr Command send_relative_addr = {
+    .reserved0 = 0,
+    .block_counter = 0,
+    .auto_command = SendAutoCommand::Disabled,
+    .direction = DataTransferDirection::HostToCard,
+    .multiblock = 0,
+    .reserved1 = 0,
+    .response_type = ResponseType::ResponseOf48Bits,
+    .reserved2 = 0,
+    .crc_enable = 1,
+    .idx_enable = 0,
+    .is_data = 0,
+    .type = CommandType::Normal,
+    .index = CommandIndex::SendRelativeAddr,
+    .reserved3 = 0
+};
+
+constexpr Command app_set_bus_width = {
+    .reserved0 = 0,
+    .block_counter = 0,
+    .auto_command = SendAutoCommand::Disabled,
+    .direction = DataTransferDirection::HostToCard,
+    .multiblock = 0,
+    .reserved1 = 0,
+    .response_type = ResponseType::ResponseOf48Bits,
+    .reserved2 = 0,
+    .crc_enable = 1,
+    .idx_enable = 0,
+    .is_data = 0,
+    .type = CommandType::Normal,
+    .index = CommandIndex::AppSetBusWidth,
+    .reserved3 = 0
+};
+
+constexpr Command select_card = {
+    .reserved0 = 0,
+    .block_counter = 0,
+    .auto_command = SendAutoCommand::Disabled,
+    .direction = DataTransferDirection::HostToCard,
+    .multiblock = 0,
+    .reserved1 = 0,
+    .response_type = ResponseType::ResponseOf48BitsWithBusy,
+    .reserved2 = 0,
+    .crc_enable = 1,
+    .idx_enable = 0,
+    .is_data = 0,
+    .type = CommandType::Normal,
+    .index = CommandIndex::SelectCard,
+    .reserved3 = 0
+};
+
+constexpr Command send_if_cond = {
+    .reserved0 = 0,
+    .block_counter = 0,
+    .auto_command = SendAutoCommand::Disabled,
+    .direction = DataTransferDirection::HostToCard,
+    .multiblock = 0,
+    .reserved1 = 0,
+    .response_type = ResponseType::ResponseOf48Bits,
+    .reserved2 = 0,
+    .crc_enable = 1,
+    .idx_enable = 0,
+    .is_data = 0,
+    .type = CommandType::Normal,
+    .index = CommandIndex::SendIfCond,
+    .reserved3 = 0
+};
+
+constexpr Command send_csd = {
+    .reserved0 = 0,
+    .block_counter = 0,
+    .auto_command = SendAutoCommand::Disabled,
+    .direction = DataTransferDirection::HostToCard,
+    .multiblock = 0,
+    .reserved1 = 0,
+    .response_type = ResponseType::ResponseOf136Bits,
+    .reserved2 = 0,
+    .crc_enable = 1,
+    .idx_enable = 0,
+    .is_data = 0,
+    .type = CommandType::Normal,
+    .index = CommandIndex::SendCsd,
+    .reserved3 = 0
+};
+
+constexpr Command set_block_len = {
+    .reserved0 = 0,
+    .block_counter = 0,
+    .auto_command = SendAutoCommand::Disabled,
+    .direction = DataTransferDirection::HostToCard,
+    .multiblock = 0,
+    .reserved1 = 0,
+    .response_type = ResponseType::ResponseOf48Bits,
+    .reserved2 = 0,
+    .crc_enable = 1,
+    .idx_enable = 0,
+    .is_data = 0,
+    .type = CommandType::Normal,
+    .index = CommandIndex::SetBlockLen,
+    .reserved3 = 0
+};
+
+constexpr Command read_single_block = {
+    .reserved0 = 0,
+    .block_counter = 0,
+    .auto_command = SendAutoCommand::Disabled,
+    .direction = DataTransferDirection::CardToHost,
+    .multiblock = 0,
+    .reserved1 = 0,
+    .response_type = ResponseType::ResponseOf48Bits,
+    .reserved2 = 0,
+    .crc_enable = 1,
+    .idx_enable = 0,
+    .is_data = 1,
+    .type = CommandType::Normal,
+    .index = CommandIndex::ReadSingleBlock,
+    .reserved3 = 0
+};
+
+constexpr Command read_multiple_block = {
+    .reserved0 = 0,
+    .block_counter = 1,
+    .auto_command = SendAutoCommand::Command12,
+    .direction = DataTransferDirection::CardToHost,
+    .multiblock = 1,
+    .reserved1 = 0,
+    .response_type = ResponseType::ResponseOf48Bits,
+    .reserved2 = 0,
+    .crc_enable = 1,
+    .idx_enable = 0,
+    .is_data = 1,
+    .type = CommandType::Normal,
+    .index = CommandIndex::ReadMultipleBlock,
+    .reserved3 = 0
+};
+
+constexpr Command write_single_block = {
+    .reserved0 = 0,
+    .block_counter = 0,
+    .auto_command = SendAutoCommand::Disabled,
+    .direction = DataTransferDirection::HostToCard,
+    .multiblock = 0,
+    .reserved1 = 0,
+    .response_type = ResponseType::ResponseOf48Bits,
+    .reserved2 = 0,
+    .crc_enable = 1,
+    .idx_enable = 0,
+    .is_data = 1,
+    .type = CommandType::Normal,
+    .index = CommandIndex::WriteSingleBlock,
+    .reserved3 = 0
+};
+
+constexpr Command write_multiple_block = {
+    .reserved0 = 0,
+    .block_counter = 1,
+    .auto_command = SendAutoCommand::Command12,
+    .direction = DataTransferDirection::HostToCard,
+    .multiblock = 1,
+    .reserved1 = 0,
+    .response_type = ResponseType::ResponseOf48Bits,
+    .reserved2 = 0,
+    .crc_enable = 1,
+    .idx_enable = 0,
+    .is_data = 1,
+    .type = CommandType::Normal,
+    .index = CommandIndex::WriteMultipleBlock,
+    .reserved3 = 0
+};
+
+constexpr Command app_send_op_cond = {
+    .reserved0 = 0,
+    .block_counter = 0,
+    .auto_command = SendAutoCommand::Disabled,
+    .direction = DataTransferDirection::HostToCard,
+    .multiblock = 0,
+    .reserved1 = 0,
+    .response_type = ResponseType::ResponseOf48Bits,
+    .reserved2 = 0,
+    .crc_enable = 0,
+    .idx_enable = 0,
+    .is_data = 0,
+    .type = CommandType::Normal,
+    .index = CommandIndex::AppSendOpCond,
+    .reserved3 = 0
+};
+
+constexpr Command app_send_scr = {
+    .reserved0 = 0,
+    .block_counter = 0,
+    .auto_command = SendAutoCommand::Disabled,
+    .direction = DataTransferDirection::CardToHost,
+    .multiblock = 0,
+    .reserved1 = 0,
+    .response_type = ResponseType::ResponseOf48Bits,
+    .reserved2 = 0,
+    .crc_enable = 0,
+    .idx_enable = 0,
+    .is_data = 1,
+    .type = CommandType::Normal,
+    .index = CommandIndex::AppSendScr,
+    .reserved3 = 0
+};
+
+constexpr Command app_cmd = {
+    .reserved0 = 0,
+    .block_counter = 0,
+    .auto_command = SendAutoCommand::Disabled,
+    .direction = DataTransferDirection::HostToCard,
+    .multiblock = 0,
+    .reserved1 = 0,
+    .response_type = ResponseType::ResponseOf48Bits,
+    .reserved2 = 0,
+    .crc_enable = 1,
+    .idx_enable = 0,
+    .is_data = 0,
+    .type = CommandType::Normal,
+    .index = CommandIndex::AppCmd,
+    .reserved3 = 0
+};
+
+}
+
+}
diff --git a/Kernel/Storage/SD/Registers.h b/Kernel/Storage/SD/Registers.h
new file mode 100644
index 000000000000..1809ee9616dd
--- /dev/null
+++ b/Kernel/Storage/SD/Registers.h
@@ -0,0 +1,207 @@
+/*
+ * Copyright (c) 2023, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Endian.h>
+#include <AK/Types.h>
+
+namespace Kernel::SD {
+
+// Relevant Specifications:
+// * (SDHC): SD Host Controller Simplified Specification (https://www.sdcard.org/downloads/pls/)
+// * (PLSS) Physical Layer Simplified Specification (https://www.sdcard.org/downloads/pls/)
+// * (BCM2835) BCM2835 ARM Peripherals (https://www.raspberrypi.org/app/uploads/2012/02/BCM2835-ARM-Peripherals.pdf)
+
+enum class HostVersion : u8 {
+    Version1,
+    Version2,
+    Version3,
+    Unknown
+};
+
+// SDHC 2.1.1 ""SD Host Control Register Map""
+// NOTE: The registers must be 32 bits, because of a quirk in the RPI.
+struct HostControlRegisterMap {
+    u32 argument_2;
+    u32 block_size_and_block_count;
+    u32 argument_1;
+    u32 transfer_mode_and_command;
+    u32 response_0;
+    u32 response_1;
+    u32 response_2;
+    u32 response_3;
+    u32 buffer_data_port;
+    u32 present_state;
+    u32 host_configuration_0;
+    u32 host_configuration_1;
+    u32 interrupt_status;
+    u32 interrupt_status_enable;
+    u32 interrupt_signal_enable;
+    u32 host_configuration_2;
+    u32 capabilities_0;
+    u32 capabilities_1;
+    u32 maximum_current_capabilities;
+    u32 maximum_current_capabilities_reserved;
+    u32 force_event_for_auto_cmd_error_status;
+    u32 adma_error_status;
+    u32 adma_system_address[2];
+    u32 preset_value[4];
+    u32 reserved_0[28];
+    u32 shared_bus_control;
+    u32 reserved_1[6];
+    struct [[gnu::packed]] {
+        u8 interrupt_signal_for_each_slot;
+        u8 : 8;
+        HostVersion specification_version_number;
+        u8 vendor_version_number;
+    } slot_interrupt_status_and_version;
+};
+static_assert(AssertSize<HostControlRegisterMap, 256>());
+
+// PLSS 5.1: ""OCR Register""
+union OperatingConditionRegister {
+    u32 raw;
+    struct {
+        u32 : 15;
+        u32 vdd_voltage_window_27_28 : 1;
+        u32 vdd_voltage_window_28_29 : 1;
+        u32 vdd_voltage_window_29_30 : 1;
+        u32 vdd_voltage_window_30_31 : 1;
+        u32 vdd_voltage_window_31_32 : 1;
+        u32 vdd_voltage_window_32_33 : 1;
+        u32 vdd_voltage_window_33_34 : 1;
+        u32 vdd_voltage_window_34_35 : 1;
+        u32 vdd_voltage_window_35_36 : 1;
+        u32 switching_to_18v_accepted : 1;
+        u32 : 2;
+        u32 over_2tb_support_status : 1;
+        u32 : 1;
+        u32 uhs2_card_status : 1;
+        u32 card_capacity_status : 1;
+        u32 card_power_up_status : 1;
+    };
+};
+static_assert(AssertSize<OperatingConditionRegister, 4>());
+
+// PLSS 5.2: ""CID Register""
+union CardIdentificationRegister {
+    u32 raw[4];
+
+    struct [[gnu::packed]] {
+        u64 manufacturing_date : 12;
+        u64 : 4;
+        u64 product_serial_number : 32;
+        u64 product_revision : 8;
+        u64 product_name : 40;
+        u64 oem_id : 16;
+        u64 manufacturer_id : 8;
+    };
+};
+static_assert(AssertSize<CardIdentificationRegister, 16>());
+
+// PLSS 5.3.2: ""CSD Register (CSD Version 1.0)""
+union CardSpecificDataRegister {
+    u64 raw[2];
+
+    struct [[gnu::packed]] {
+        // Note that the physical layer spec says there are 7 bits of checksum and 1 reserved bit here,
+        // but they are removed
+        u32 : 1;
+        u32 write_protection_until_power_cycle : 1;
+        u32 file_format : 2;
+        u32 temporary_write_protection : 1;
+        u32 permanent_write_protection : 1;
+        u32 copy_flag : 1;
+        u32 file_format_group : 1;
+        u32 : 5;
+        u32 partial_blocks_for_write_allowed : 1;
+        u32 max_write_data_block_length : 4;
+        u32 write_speed_factor : 3;
+        u32 : 2;
+        u32 write_protect_group_enable : 1;
+        u32 write_protect_group_size : 7;
+        u32 erase_sector_size : 7;
+        u32 erase_single_block_enable : 1;
+        u32 device_size_multiplier : 3;
+        u32 max_write_current_at_vdd_max : 3;
+        u32 max_write_current_at_vdd_min : 3;
+        u32 max_read_current_at_vdd_max : 3;
+        u32 max_read_current_at_vdd_min : 3;
+        u32 device_size : 12;
+        u32 : 2;
+        u32 dsr_implemented : 1;
+        u32 read_block_misalignment : 1;
+        u32 write_block_misalignment : 1;
+        u32 partial_blocks_for_read_allowed : 1;
+        u32 max_read_data_block_length : 4;
+        u32 card_command_classes : 12;
+        u32 max_data_transfer_rate : 8;
+        u32 data_read_access_time2 : 8;
+        u32 data_read_access_time1 : 8;
+        u32 : 6;
+        u32 csd_structure : 2;
+    };
+};
+static_assert(AssertSize<CardSpecificDataRegister, 16>());
+
+// PLSS 5.6: ""SCR Register""
+union SDConfigurationRegister {
+    u8 raw[8];
+
+    struct {
+        u32 scr_structure : 4;
+        u32 sd_specification : 4;
+        u32 data_status_after_erase : 1;
+        u32 sd_security : 3;
+        u32 sd_bus_widths : 4;
+        u32 sd_specification3 : 1;
+        u32 extended_security : 4;
+        u32 sd_specification4 : 1;
+        u32 sd_specification_x : 4;
+        u32 : 1;
+        u32 command_support : 5;
+        u32 : 32;
+    };
+};
+static_assert(AssertSize<SDConfigurationRegister, 8>());
+
+// PLSS 4.10.1: ""Card Status""
+union CardStatus {
+    u32 raw;
+
+    struct {
+        u32 : 3;
+        u32 ake_seq_error : 1;
+        u32 : 1;
+        u32 app_cmd : 1;
+        u32 fx_event : 1;
+        u32 : 1;
+        u32 ready_for_data : 1;
+        u32 current_state : 4;
+        u32 erase_reset : 1;
+        u32 card_ecc_disabled : 1;
+        u32 wp_erase_skip : 1;
+        u32 csd_overwrite : 1;
+        u32 : 2;
+        u32 error : 1;
+        u32 cc_error : 1;
+        u32 card_ecc_failed : 1;
+        u32 illegal_command : 1;
+        u32 com_crc_error : 1;
+        u32 lock_unlock_failed : 1;
+        u32 card_is_locked : 1;
+        u32 wp_violation : 1;
+        u32 erase_param : 1;
+        u32 erase_seq_error : 1;
+        u32 block_len_error : 1;
+        u32 address_error : 1;
+        u32 out_of_range : 1;
+    };
+};
+static_assert(AssertSize<CardStatus, 4>());
+
+}
diff --git a/Kernel/Storage/SD/SDHostController.cpp b/Kernel/Storage/SD/SDHostController.cpp
new file mode 100644
index 000000000000..8adc2e55bf6d
--- /dev/null
+++ b/Kernel/Storage/SD/SDHostController.cpp
@@ -0,0 +1,617 @@
+/*
+ * Copyright (c) 2023, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <AK/Format.h>
+#include <AK/StdLibExtras.h>
+#include <Kernel/Devices/DeviceManagement.h>
+#include <Kernel/Storage/SD/Commands.h>
+#include <Kernel/Storage/SD/SDHostController.h>
+#include <Kernel/Storage/StorageManagement.h>
+#include <Kernel/Time/TimeManagement.h>
+#if ARCH(AARCH64)
+#    include <Kernel/Arch/aarch64/RPi/SDHostController.h>
+#endif
+
+namespace Kernel {
+
+// Relevant Specifications:
+// * (SDHC): SD Host Controller Simplified Specification (https://www.sdcard.org/downloads/pls/)
+// * (PLSS) Physical Layer Simplified Specification (https://www.sdcard.org/downloads/pls/)
+// * (BCM2835) BCM2835 ARM Peripherals (https://www.raspberrypi.org/app/uploads/2012/02/BCM2835-ARM-Peripherals.pdf)
+
+static void delay(i64 nanoseconds)
+{
+    auto start = TimeManagement::the().monotonic_time().to_nanoseconds();
+    auto end = start + nanoseconds;
+    while (TimeManagement::the().monotonic_time().to_nanoseconds() < end)
+        Processor::pause();
+}
+
+constexpr u32 max_supported_sdsc_frequency = 25000000;
+
+// In ""m_registers->host_configuration_1""
+// In sub-register ""Clock Control""
+constexpr u32 internal_clock_enable = 1 << 0;
+constexpr u32 internal_clock_stable = 1 << 1;
+constexpr u32 sd_clock_enable = 1 << 2;
+
+// In sub-register ""Software Reset""
+constexpr u32 software_reset_for_all = 0x01000000;
+
+// In Interrupt Status Register
+const u32 command_complete = 1 << 0;
+const u32 transfer_complete = 1 << 1;
+const u32 buffer_write_ready = 1 << 4;
+const u32 buffer_read_ready = 1 << 5;
+
+// PLSS 5.1: all voltage windows
+constexpr u32 acmd41_voltage = 0x00ff8000;
+// PLSS 4.2.3.1: All voltage windows, XPC = 1, SDHC = 1
+constexpr u32 acmd41_arg = 0x50ff8000;
+
+constexpr u32 block_len = 512;
+
+SDHostController::SDHostController()
+    : StorageController(StorageManagement::generate_relative_sd_controller_id({}))
+{
+}
+
+ErrorOr<void> SDHostController::reset() { return ENOTIMPL; }
+
+ErrorOr<void> SDHostController::shutdown() { return ENOTIMPL; }
+
+void SDHostController::complete_current_request(AsyncDeviceRequest::RequestResult)
+{
+    VERIFY_NOT_REACHED();
+}
+
+ErrorOr<void> SDHostController::initialize()
+{
+    m_registers = get_register_map_base_address();
+    if (!m_registers)
+        return EIO;
+
+    if (host_version() != SD::HostVersion::Version3)
+        return ENOTSUP;
+
+    TRY(reset_host_controller());
+
+    m_registers->interrupt_status_enable = 0xffffffff;
+    m_registers->interrupt_signal_enable = 0xffffffff;
+
+    auto card_or_error = try_initialize_inserted_card();
+    if (card_or_error.is_error() && card_or_error.error().code() != ENODEV) {
+        dmesgln(""SDHostController: Failed to initialize inserted card: {}"", card_or_error.error());
+    } else if (!card_or_error.is_error()) {
+        m_card = card_or_error.release_value();
+    }
+
+    return {};
+}
+
+ErrorOr<NonnullLockRefPtr<SDMemoryCard>> SDHostController::try_initialize_inserted_card()
+{
+    if (!is_card_inserted())
+        return ENODEV;
+
+    // PLSS 4.2: ""Card Identification Mode""
+    // ""After power-on ...the cards are initialized with ... 400KHz clock frequency.""
+    TRY(sd_clock_supply(400000));
+
+    // PLSS 4.2.3: ""Card Initialization and Identification Process""
+    // Also see Figure 4-2 in the PLSS spec for a flowchart of the initialization process.
+    // Note that the steps correspond to the steps in the flowchart, although I made up the numbering and text
+
+    // 1. Send CMD0 (GO_IDLE_STATE) to the card
+    TRY(issue_command(SD::Commands::go_idle_state, 0));
+    TRY(wait_for_response());
+
+    // 2. Send CMD8 (SEND_IF_COND) to the card
+    // SD interface condition: 7:0 = check pattern, 11:8 = supply voltage
+    //      0x1aa: check pattern = 10101010, supply voltage = 1 => 2.7-3.6V
+    const u32 voltage_window = 0x1aa;
+    TRY(issue_command(SD::Commands::send_if_cond, voltage_window));
+    auto interface_condition_response = wait_for_response();
+
+    // 3. If the card does not respond to CMD8 it means that (Ver2.00 or later
+    // SD Memory Card(voltage mismatch) or Ver1.X SD Memory Card or not SD
+    // Memory Card)
+    if (interface_condition_response.is_error()) {
+        // TODO: This is supposed to be the ""No Response"" branch of the
+        // flowchart in Figure 4-2 of the PLSS spec
+        return ENOTSUP;
+    }
+
+    // 4. If the card responds to CMD8, but it's not a valid response then the
+    // card is not usable
+    if (interface_condition_response.value().response[0] != voltage_window) {
+        // FIXME: We should probably try again with a lower voltage window
+        return ENODEV;
+    }
+
+    // 5. Send ACMD41 (SEND_OP_COND) with HCS=1 to the card, repeat this until the card is ready or timeout
+    SD::OperatingConditionRegister ocr = {};
+    bool card_is_usable = true;
+    if (!retry_with_timeout([&]() {
+            if (issue_command(SD::Commands::app_cmd, 0).is_error() || wait_for_response().is_error())
+                return false;
+
+            if (issue_command(SD::Commands::app_send_op_cond, acmd41_arg).is_error())
+                return false;
+
+            if (auto acmd41_response = wait_for_response();
+                !acmd41_response.is_error()) {
+
+                // 20. Check if the card supports the voltage windows we requested and SDHC
+                u32 response = acmd41_response.value().response[0];
+                if ((response & acmd41_voltage) != acmd41_voltage) {
+                    card_is_usable = false;
+                    return false;
+                }
+
+                ocr.raw = acmd41_response.value().response[0];
+            }
+
+            return ocr.card_power_up_status == 1;
+        })) {
+        return card_is_usable ? EIO : ENODEV;
+    }
+
+    // 6. If you requested to switch to 1.8V, and the card accepts, execute a voltage switch sequence
+    //    (we didn't ask it)
+
+    // 7. Send CMD2 (ALL_SEND_CID) to the card
+    TRY(issue_command(SD::Commands::all_send_cid, 0));
+    auto all_send_cid_response = TRY(wait_for_response());
+    auto cid = bit_cast<SD::CardIdentificationRegister>(all_send_cid_response.response);
+
+    // 8. Send CMD3 (SEND_RELATIVE_ADDR) to the card
+    TRY(issue_command(SD::Commands::send_relative_addr, 0));
+    auto send_relative_addr_response = TRY(wait_for_response());
+    u32 rca = send_relative_addr_response.response[0]; // FIXME: Might need to clear some bits here
+
+    // Extra steps:
+
+    TRY(issue_command(SD::Commands::send_csd, rca));
+    auto send_csd_response = TRY(wait_for_response());
+    auto csd = bit_cast<SD::CardSpecificDataRegister>(send_csd_response.response);
+
+    u32 block_count = (csd.device_size + 1) * (1 << (csd.device_size_multiplier + 2));
+    u32 block_size = (1 << csd.max_read_data_block_length);
+    u64 capacity = static_cast<u64>(block_count) * block_size;
+    u64 card_capacity_in_blocks = capacity / block_len;
+
+    // TODO: Do high speed initialisation, if supported
+    TRY(sd_clock_frequency_change(max_supported_sdsc_frequency));
+
+    TRY(issue_command(SD::Commands::select_card, rca));
+    TRY(wait_for_response());
+
+    // Set block length to 512 if the card is SDSC.
+    // All other models only support 512 byte blocks so they don't need to be explicitly told
+    if (!ocr.card_capacity_status) {
+        TRY(issue_command(SD::Commands::set_block_len, block_len));
+        TRY(wait_for_response());
+    }
+
+    auto scr = TRY(retrieve_sd_configuration_register(rca));
+
+    TRY(issue_command(SD::Commands::app_cmd, rca));
+    TRY(wait_for_response());
+    TRY(issue_command(SD::Commands::app_set_bus_width, 0x2)); // 0b00=1 bit bus, 0b10=4 bit bus
+    TRY(wait_for_response());
+
+    return TRY(DeviceManagement::try_create_device<SDMemoryCard>(
+        *this,
+        StorageDevice::LUNAddress { controller_id(), 0, 0 },
+        hardware_relative_controller_id(), block_len,
+        card_capacity_in_blocks, rca, ocr, cid, scr));
+}
+
+bool SDHostController::retry_with_timeout(Function<bool()> f, i64 delay_between_tries)
+{
+    int timeout = 1000;
+    bool success = false;
+    while (!success && timeout > 0) {
+        success = f();
+        if (!success)
+            delay(delay_between_tries);
+        timeout--;
+    }
+    return timeout > 0;
+}
+
+ErrorOr<void> SDHostController::issue_command(SD::Command const& cmd, u32 argument)
+{
+    // SDHC 3.7.1: ""Transaction Control without Data Transfer Using DAT Line""
+    constexpr u32 command_inhibit = 1 << 1;
+
+    // 1. Check Command Inhibit (CMD) in the Present State register.
+    //    Repeat this step until Command Inhibit (CMD) is 0.
+    //    That is, when Command Inhibit (CMD) is 1, the Host Driver
+    //    shall not issue an SD Command.
+    if (!retry_with_timeout(
+            [&]() { return !(m_registers->present_state & command_inhibit); })) {
+        return EIO;
+    }
+
+    // 2. If the Host Driver issues an SD Command using DAT lines
+    //    including busy signal, go to step (3).
+    //    If without using DAT lines including busy signal, go to step (5).
+    // 3. If the Host Driver is issuing an abort command, go to step (5). In the
+    //    case of non-abort command, go to step (4).
+    if (cmd.requires_dat_line() && cmd.type != SD::CommandType::Abort) {
+
+        // 4. Check Command Inhibit (DAT) in the Present State register. Repeat
+        // this step until Command Inhibit (DAT) is set to 0.
+        constexpr u32 data_inhibit = 1 << 2;
+        if (!retry_with_timeout([&]() { return !(m_registers->present_state & data_inhibit); })) {
+            return EIO;
+        }
+    }
+
+    // 5. Set registers as described in Table 1-2 except Command register.
+    m_registers->argument_1 = argument;
+
+    // 6. Set the Command register.
+    m_registers->transfer_mode_and_command = cmd.raw;
+
+    // 7. Perform Command Completion Sequence in accordance with 3.7.1.2.
+    // Done in wait_for_response()
+
+    return {};
+}
+
+ErrorOr<SDHostController::Response> SDHostController::wait_for_response()
+{
+    // SDHC 3.7.1.2 The Sequence to Finalize a Command
+
+    // 1. Wait for the Command Complete Interrupt. If the Command Complete
+    // Interrupt has occurred, go to step (2).
+    if (!retry_with_timeout(
+            [&]() { return m_registers->interrupt_status & command_complete; })) {
+        return EIO;
+    }
+
+    // 2. Write 1 to Command Complete in the Normal Interrupt Status register to clear this bit
+    m_registers->interrupt_status = command_complete;
+
+    // 3. Read the Response register(s) to get the response.
+    // NOTE: We read fewer bits than ResponseType because the missing bits are only
+    //       relevant for the physical layer, and the device filters them before they
+    //       reach us
+    Response r = {};
+    auto cmd = last_sent_command();
+    switch (cmd.response_type) {
+    case SD::ResponseType::NoResponse:
+        break;
+    case SD::ResponseType::ResponseOf136Bits:
+        r.response[0] = m_registers->response_0;
+        r.response[1] = m_registers->response_1;
+        r.response[2] = m_registers->response_2;
+        r.response[3] = m_registers->response_3;
+        break;
+    case SD::ResponseType::ResponseOf48Bits:
+        r.response[0] = m_registers->response_0;
+        break;
+    case SD::ResponseType::ResponseOf48BitsWithBusy:
+        // FIXME: Idk what to do here
+        break;
+    }
+
+    // 4. Judge whether the command uses the Transfer Complete Interrupt or not.
+    //    If it uses Transfer Complete, go to step (5). If not, go to step (7).
+    if (last_sent_command().uses_transfer_complete_interrupt())
+        TODO();
+
+    // 7. Check for errors in Response Data. If there is no error, go to step (8). If there is an error, go to step (9).
+    if (cmd.response_type != SD::ResponseType::ResponseOf136Bits) {
+        if (card_status_contains_errors(cmd, r.response[0])) {
+            return EIO;
+        }
+    }
+
+    // NOTE: Steps 7, 8 and 9 consist of checking the response for errors, which
+    // are specific to each command therefore those steps are not fully implemented
+    // here.
+
+    return { r };
+}
+
+ErrorOr<void> SDHostController::sd_clock_supply(u32 frequency)
+{
+    // SDHC 3.2.1: ""SD Clock Supply Sequence""
+    // The *Clock Control* register is in the lower 16 bits of *Host Configuration 1*
+    VERIFY((m_registers->host_configuration_1 & sd_clock_enable) == 0);
+
+    // 1. Find out the divisor to determine the SD Clock Frequency
+    const u32 sd_clock_frequency = TRY(retrieve_sd_clock_frequency());
+
+    // FIXME: The way the SD Clock is to be calculated is different for other versions
+    if (host_version() != SD::HostVersion::Version3)
+        TODO();
+    u32 divisor = AK::max(AK::ceil_div(sd_clock_frequency, frequency), 2);
+
+    // 2. Set Internal Clock Enable and SDCLK Frequency Select in the Clock Control register
+    const u32 two_upper_bits_of_sdclk_frequency_select = (divisor >> 8 & 0x3) << 6;
+    const u32 eight_lower_bits_of_sdclk_frequency_select = (divisor & 0xff) << 8;
+    const u32 sdclk_frequency_select = two_upper_bits_of_sdclk_frequency_select | eight_lower_bits_of_sdclk_frequency_select;
+    m_registers->host_configuration_1 = m_registers->host_configuration_1 | internal_clock_enable | sdclk_frequency_select;
+
+    // 3. Check Internal Clock Stable in the Clock Control register until it is 1
+    if (!retry_with_timeout([&] { return m_registers->host_configuration_1 & internal_clock_stable; })) {
+        return EIO;
+    }
+
+    // 4. Set SD Clock Enable in the Clock Control register to 1
+    m_registers->host_configuration_1 = m_registers->host_configuration_1 | sd_clock_enable;
+
+    return {};
+}
+
+void SDHostController::sd_clock_stop()
+{
+    // SDHC 3.2.2: ""SD Clock Stop Sequence""
+
+    // 1. Set SD Clock Enable in the Clock Control register to 0
+    m_registers->host_configuration_1 = m_registers->host_configuration_1 & ~sd_clock_enable;
+}
+
+ErrorOr<void> SDHostController::sd_clock_frequency_change(u32 new_frequency)
+{
+    // SDHC 3.2.3: ""SD Clock Frequency Change Sequence""
+
+    // 1. Execute the SD Clock Stop Sequence
+    sd_clock_stop();
+
+    // 2. Execute the SD Clock Supply Sequence
+    return sd_clock_supply(new_frequency);
+}
+
+ErrorOr<void> SDHostController::reset_host_controller()
+{
+    m_registers->host_configuration_0 = 0;
+    m_registers->host_configuration_1 = m_registers->host_configuration_1 | software_reset_for_all;
+    if (!retry_with_timeout(
+            [&] {
+                return (m_registers->host_configuration_1 & software_reset_for_all) == 0;
+            })) {
+        return EIO;
+    }
+
+    return {};
+}
+
+ErrorOr<void> SDHostController::transaction_control_with_data_transfer_using_the_dat_line_without_dma(
+    SD::Command const& command,
+    u32 argument,
+    u32 block_count,
+    u32 block_size,
+    UserOrKernelBuffer buf,
+    DataTransferType data_transfer_type)
+{
+    // SDHC 3.7.2: ""Transaction Control with Data Transfer Using DAT Line (without DMA)""
+
+    // 1. Set the value corresponding to the executed data byte length of one block to Block Size register.
+    // 2. Set the value corresponding to the executed data block count to Block Count register in accordance with Table 2-8.
+    m_registers->block_size_and_block_count = (block_count << 16) | block_size;
+
+    // 3. Set the argument value to Argument 1 register.
+    m_registers->argument_1 = argument;
+
+    // 4. Set the value to the Transfer Mode register. The host driver
+    // determines Multi / Single Block
+    //    Select, Block Count Enable, Data Transfer Direction, Auto CMD12 Enable
+    //    and DMA Enable. Multi / Single Block Select and Block Count Enable are
+    //    determined according to Table 2-8. (NOTE: We assume `cmd` already has
+    //    the correct flags set)
+    // 5. Set the value to Command register.
+    m_registers->transfer_mode_and_command = command.raw;
+
+    // 6. Then, wait for the Command Complete Interrupt.
+    if (!retry_with_timeout(
+            [&]() { return m_registers->interrupt_status & command_complete; })) {
+        return EIO;
+    }
+
+    // 7. Write 1 to the Command Complete in the Normal Interrupt Status
+    // register for clearing this bit.
+    m_registers->interrupt_status = command_complete;
+
+    // 8. Read Response register and get necessary information of the issued
+    // command
+    //    (FIXME: Return the value for better error handling)
+
+    // 9. In the case where this sequence is for write to a card, go to step
+    // (10).
+    //    In case of read from a card, go to step (14).
+    if (data_transfer_type == DataTransferType::Write) {
+
+        for (u32 i = 0; i < block_count; i++) {
+            // 10. Then wait for Buffer Write Ready Interrupt.
+            if (!retry_with_timeout(
+                    [&]() {
+                        return m_registers->interrupt_status & buffer_write_ready;
+                    })) {
+                return EIO;
+            }
+
+            // 11. Write 1 to the Buffer Write Ready in the Normal Interrupt Status register for clearing this bit.
+            m_registers->interrupt_status = buffer_write_ready;
+
+            // 12. Write block data (in according to the number of bytes specified at the step (1)) to Buffer Data Port register.
+            u32 temp;
+            for (u32 j = 0; j < block_size / sizeof(u32); j++) {
+                TRY(buf.read(&temp, i * block_size + sizeof(u32) * j, sizeof(u32)));
+                m_registers->buffer_data_port = temp;
+            }
+
+            // 13. Repeat until all blocks are sent and then go to step (18).
+        }
+    } else {
+        for (u32 i = 0; i < block_count; i++) {
+            // 14. Then wait for the Buffer Read Ready Interrupt.
+            if (!retry_with_timeout([&]() { return m_registers->interrupt_status & buffer_read_ready; })) {
+                return EIO;
+            }
+
+            // 15. Write 1 to the Buffer Read Ready in the Normal Interrupt Status
+            // register for clearing this bit.
+            m_registers->interrupt_status = buffer_read_ready;
+
+            // 16. Read block data (in according to the number of bytes specified at
+            // the step (1)) from the Buffer Data Port register
+            u32 temp;
+            for (u32 j = 0; j < block_size / sizeof(u32); j++) {
+                temp = m_registers->buffer_data_port;
+                TRY(buf.write(&temp, i * block_size + sizeof(u32) * j, sizeof(u32)));
+            }
+
+            // 17. Repeat until all blocks are received and then go to step (18).
+        }
+    }
+
+    // 18. If this sequence is for Single or Multiple Block Transfer, go to step
+    // (19). In case of Infinite Block Transfer, go to step (21)
+
+    // 19. Wait for Transfer Complete Interrupt.
+    if (!retry_with_timeout(
+            [&]() { return m_registers->interrupt_status & transfer_complete; })) {
+        return EIO;
+    }
+
+    // 20. Write 1 to the Transfer Complete in the Normal Interrupt Status
+    // register for clearing this bit
+    m_registers->interrupt_status = transfer_complete;
+
+    return {};
+}
+
+ErrorOr<void> SDHostController::read_block(Badge<SDMemoryCard>, u32 block_address, u32 block_count, UserOrKernelBuffer out)
+{
+    VERIFY(is_card_inserted());
+
+    if (block_count > 1) {
+        return transaction_control_with_data_transfer_using_the_dat_line_without_dma(
+            SD::Commands::read_multiple_block,
+            block_address,
+            block_count,
+            block_len,
+            out,
+            DataTransferType::Read);
+    }
+
+    return transaction_control_with_data_transfer_using_the_dat_line_without_dma(
+        SD::Commands::read_single_block,
+        block_address,
+        block_count,
+        block_len,
+        out,
+        DataTransferType::Read);
+}
+
+ErrorOr<void> SDHostController::write_block(Badge<SDMemoryCard>, u32 block_address, u32 block_count, UserOrKernelBuffer in)
+{
+    VERIFY(is_card_inserted());
+
+    if (block_count > 1) {
+        return transaction_control_with_data_transfer_using_the_dat_line_without_dma(
+            SD::Commands::write_multiple_block,
+            block_address,
+            block_count,
+            block_len,
+            in,
+            DataTransferType::Write);
+    }
+    return transaction_control_with_data_transfer_using_the_dat_line_without_dma(
+        SD::Commands::write_single_block,
+        block_address,
+        block_count,
+        block_len,
+        in,
+        DataTransferType::Write);
+}
+
+ErrorOr<SD::SDConfigurationRegister> SDHostController::retrieve_sd_configuration_register(u32 relative_card_address)
+{
+    SD::SDConfigurationRegister scr;
+
+    TRY(issue_command(SD::Commands::app_cmd, relative_card_address));
+    TRY(wait_for_response());
+    TRY(transaction_control_with_data_transfer_using_the_dat_line_without_dma(
+        SD::Commands::app_send_scr,
+        0, 1, 8,
+        UserOrKernelBuffer::for_kernel_buffer(scr.raw), DataTransferType::Read));
+
+    return scr;
+}
+
+ErrorOr<u32> SDHostController::retrieve_sd_clock_frequency()
+{
+    const i64 one_mhz = 1'000'000;
+    return { ((m_registers->capabilities_0 & 0xff00) >> 8) * one_mhz };
+}
+
+// PLSS Table 4-43 : Card Status Field/Command
+bool SDHostController::card_status_contains_errors(SD::Command const& command, u32 resp)
+{
+    SD::CardStatus status;
+    // PLSS 4.9.5 R6
+    if (command.index == SD::CommandIndex::SendRelativeAddr) {
+        status.raw = (resp & 0x1fff) | ((resp & 0x2000) << 6) | ((resp & 0x4000) << 8) | ((resp & 0x8000) << 8);
+    } else {
+        status.raw = resp;
+    }
+
+    bool common_errors = status.error || status.cc_error || status.card_ecc_failed || status.illegal_command || status.com_crc_error || status.lock_unlock_failed || status.card_is_locked || status.wp_violation || status.erase_param || status.csd_overwrite;
+
+    bool contains_errors = false;
+    switch (command.index) {
+    case SD::CommandIndex::SendRelativeAddr:
+        if (status.error || status.illegal_command || status.com_crc_error) {
+            contains_errors = true;
+        }
+        break;
+    case SD::CommandIndex::SelectCard:
+        if (common_errors) {
+            contains_errors = true;
+        }
+        break;
+    case SD::CommandIndex::SetBlockLen:
+        if (common_errors || status.block_len_error) {
+            contains_errors = true;
+        }
+        break;
+    case SD::CommandIndex::ReadSingleBlock:
+    case SD::CommandIndex::ReadMultipleBlock:
+        if (common_errors || status.address_error || status.out_of_range) {
+            contains_errors = true;
+        }
+        break;
+    case SD::CommandIndex::WriteSingleBlock:
+    case SD::CommandIndex::WriteMultipleBlock:
+        if (common_errors || status.block_len_error || status.address_error || status.out_of_range) {
+            contains_errors = true;
+        }
+        break;
+    case SD::CommandIndex::AppSendScr:
+        if (common_errors) {
+            contains_errors = true;
+        }
+        break;
+    case SD::CommandIndex::AppCmd:
+        if (common_errors) {
+            contains_errors = true;
+        }
+        break;
+    default:
+        break;
+    }
+
+    return contains_errors;
+}
+
+}
diff --git a/Kernel/Storage/SD/SDHostController.h b/Kernel/Storage/SD/SDHostController.h
new file mode 100644
index 000000000000..a50bb35c2a5a
--- /dev/null
+++ b/Kernel/Storage/SD/SDHostController.h
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2023, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Badge.h>
+#include <AK/Function.h>
+#include <AK/Result.h>
+#include <AK/Types.h>
+#include <Kernel/Locking/Mutex.h>
+#include <Kernel/Storage/SD/Commands.h>
+#include <Kernel/Storage/SD/Registers.h>
+#include <Kernel/Storage/SD/SDMemoryCard.h>
+
+namespace Kernel {
+
+class SDHostController : public StorageController {
+public:
+    SDHostController();
+    ErrorOr<void> initialize();
+
+    virtual ~SDHostController() = default;
+
+    virtual LockRefPtr<StorageDevice> device(u32 index) const override { return index == 0 ? m_card : nullptr; }
+    virtual ErrorOr<void> reset() override;
+    virtual ErrorOr<void> shutdown() override;
+    virtual size_t devices_count() const override { return m_card ? 1 : 0; }
+    virtual void complete_current_request(AsyncDeviceRequest::RequestResult) override;
+
+    ErrorOr<void> read_block(Badge<SDMemoryCard>, u32 block_address, u32 block_count, UserOrKernelBuffer out);
+    ErrorOr<void> write_block(Badge<SDMemoryCard>, u32 block_address, u32 block_count, UserOrKernelBuffer in);
+
+protected:
+    virtual SD::HostControlRegisterMap volatile* get_register_map_base_address() = 0;
+
+private:
+    ErrorOr<NonnullLockRefPtr<SDMemoryCard>> try_initialize_inserted_card();
+
+    bool is_card_inserted() const
+    {
+        constexpr u32 card_inserted = 1 << 16;
+        return m_registers->present_state & card_inserted;
+    }
+
+    SD::HostVersion host_version() { return m_registers->slot_interrupt_status_and_version.specification_version_number; }
+
+    ErrorOr<void> reset_host_controller();
+
+    SD::Command last_sent_command()
+    {
+        SD::Command command {};
+        command.raw = m_registers->transfer_mode_and_command;
+        return command;
+    }
+    bool currently_active_command_uses_transfer_complete_interrupt();
+
+    ErrorOr<void> sd_clock_supply(u32 frequency);
+    void sd_clock_stop();
+    ErrorOr<void> sd_clock_frequency_change(u32 frequency);
+    ErrorOr<u32> retrieve_sd_clock_frequency();
+
+    struct Response {
+        u32 response[4];
+    };
+    ErrorOr<void> issue_command(SD::Command const&, u32 argument);
+    ErrorOr<Response> wait_for_response();
+
+    bool card_status_contains_errors(SD::Command const&, u32);
+
+    bool retry_with_timeout(Function<bool()>, i64 delay_between_tries = 100);
+
+    enum class DataTransferType {
+        Read,
+        Write
+    };
+    ErrorOr<void> transaction_control_with_data_transfer_using_the_dat_line_without_dma(SD::Command const&, u32 argument, u32 block_count, u32 block_size, UserOrKernelBuffer, DataTransferType data_transfer_type);
+    ErrorOr<SD::SDConfigurationRegister> retrieve_sd_configuration_register(u32 relative_card_address);
+
+    volatile SD::HostControlRegisterMap* m_registers;
+    LockRefPtr<SDMemoryCard> m_card { nullptr };
+
+    u32 m_hardware_relative_controller_id { 0 };
+    Mutex m_lock { ""SDHostController""sv };
+};
+
+}
diff --git a/Kernel/Storage/SD/SDMemoryCard.cpp b/Kernel/Storage/SD/SDMemoryCard.cpp
new file mode 100644
index 000000000000..0a6b8872cd3b
--- /dev/null
+++ b/Kernel/Storage/SD/SDMemoryCard.cpp
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2023, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <Kernel/Storage/SD/Commands.h>
+#include <Kernel/Storage/SD/SDHostController.h>
+#include <Kernel/Storage/SD/SDMemoryCard.h>
+
+namespace Kernel {
+
+SDMemoryCard::SDMemoryCard(SDHostController& sdhc, StorageDevice::LUNAddress lun_address, u32 hardware_relative_controller_id, u32 block_len, u64 capacity_in_blocks, u32 relative_card_address, SD::OperatingConditionRegister ocr, SD::CardIdentificationRegister cid, SD::SDConfigurationRegister scr)
+    : StorageDevice(lun_address, hardware_relative_controller_id, block_len,
+        capacity_in_blocks)
+    , m_sdhc(sdhc)
+    , m_relative_card_address(relative_card_address)
+    , m_ocr(ocr)
+    , m_cid(cid)
+    , m_scr(scr)
+{
+}
+
+void SDMemoryCard::start_request(AsyncBlockDeviceRequest& request)
+{
+    MutexLocker locker(m_lock);
+
+    VERIFY(request.block_size() == block_size());
+
+    auto buffer = request.buffer();
+    u32 block_address = request.block_index();
+    if (card_addressing_mode() == CardAddressingMode::ByteAddressing) {
+        block_address *= block_size();
+    }
+
+    if (request.request_type() == AsyncBlockDeviceRequest::RequestType::Write) {
+        if (m_sdhc.write_block({}, block_address, request.block_count(), buffer).is_error()) {
+            request.complete(AsyncDeviceRequest::Failure);
+            return;
+        }
+    } else {
+        if (m_sdhc.read_block({}, block_address, request.block_count(), buffer).is_error()) {
+            request.complete(AsyncDeviceRequest::Failure);
+            return;
+        }
+    }
+
+    request.complete(AsyncDeviceRequest::Success);
+}
+
+}
diff --git a/Kernel/Storage/SD/SDMemoryCard.h b/Kernel/Storage/SD/SDMemoryCard.h
new file mode 100644
index 000000000000..08cf332b0a5f
--- /dev/null
+++ b/Kernel/Storage/SD/SDMemoryCard.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2023, the SerenityOS developers.
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/Function.h>
+#include <AK/Result.h>
+#include <AK/Types.h>
+#include <Kernel/Locking/Mutex.h>
+#include <Kernel/Storage/SD/Registers.h>
+#include <Kernel/Storage/StorageDevice.h>
+
+namespace Kernel {
+
+class SDHostController;
+
+class SDMemoryCard : public StorageDevice {
+public:
+    SDMemoryCard(SDHostController& sdhc, StorageDevice::LUNAddress, u32 hardware_relative_controller_id, u32 block_len, u64 capacity_in_blocks, u32 relative_card_address, SD::OperatingConditionRegister ocr, SD::CardIdentificationRegister cid, SD::SDConfigurationRegister scr);
+
+    // ^StorageDevice
+    virtual CommandSet command_set() const override { return CommandSet::SD; }
+
+    // ^BlockDevice
+    virtual void start_request(AsyncBlockDeviceRequest&) override;
+
+private:
+    enum class CardAddressingMode {
+        ByteAddressing,
+        BlockAddressing
+    };
+    CardAddressingMode card_addressing_mode() const
+    {
+        return m_ocr.card_capacity_status ? CardAddressingMode::BlockAddressing : CardAddressingMode::ByteAddressing;
+    }
+
+    Mutex m_lock { ""SDMemoryCard""sv };
+    SDHostController& m_sdhc;
+
+    u32 m_relative_card_address;
+    SD::OperatingConditionRegister m_ocr;
+    SD::CardIdentificationRegister m_cid;
+    SD::SDConfigurationRegister m_scr;
+};
+
+}
diff --git a/Kernel/Storage/StorageDevice.cpp b/Kernel/Storage/StorageDevice.cpp
index 091d3546024b..d61644e2ce52 100644
--- a/Kernel/Storage/StorageDevice.cpp
+++ b/Kernel/Storage/StorageDevice.cpp
@@ -77,6 +77,8 @@ StringView StorageDevice::command_set_to_string_view() const
         return ""ata""sv;
     case CommandSet::NVMe:
         return ""nvme""sv;
+    case CommandSet::SD:
+        return ""sd""sv;
     default:
         break;
     }
diff --git a/Kernel/Storage/StorageDevice.h b/Kernel/Storage/StorageDevice.h
index 08198f479272..736a42dcae27 100644
--- a/Kernel/Storage/StorageDevice.h
+++ b/Kernel/Storage/StorageDevice.h
@@ -38,6 +38,7 @@ class StorageDevice : public BlockDevice {
         SCSI,
         ATA,
         NVMe,
+        SD,
     };
 
     // Note: The most reliable way to address this device from userspace interfaces,
diff --git a/Kernel/Storage/StorageManagement.cpp b/Kernel/Storage/StorageManagement.cpp
index cd529ed0e129..eccb9d7242ff 100644
--- a/Kernel/Storage/StorageManagement.cpp
+++ b/Kernel/Storage/StorageManagement.cpp
@@ -13,6 +13,9 @@
 #    include <Kernel/Arch/x86_64/ISABus/IDEController.h>
 #    include <Kernel/Arch/x86_64/PCI/IDELegacyModeController.h>
 #endif
+#if ARCH(AARCH64)
+#    include <Kernel/Arch/aarch64/RPi/SDHostController.h>
+#endif
 #include <Kernel/Bus/PCI/API.h>
 #include <Kernel/Bus/PCI/Access.h>
 #include <Kernel/Bus/PCI/Controller/VolumeManagementDevice.h>
@@ -26,6 +29,7 @@
 #include <Kernel/Storage/ATA/GenericIDE/Controller.h>
 #include <Kernel/Storage/NVMe/NVMeController.h>
 #include <Kernel/Storage/Ramdisk/Controller.h>
+#include <Kernel/Storage/SD/SDHostController.h>
 #include <Kernel/Storage/StorageManagement.h>
 #include <LibPartition/EBRPartitionTable.h>
 #include <LibPartition/GUIDPartitionTable.h>
@@ -40,6 +44,7 @@ static Atomic<u32> s_controller_id;
 
 static Atomic<u32> s_relative_ata_controller_id;
 static Atomic<u32> s_relative_nvme_controller_id;
+static Atomic<u32> s_relative_sd_controller_id;
 
 static constexpr StringView partition_uuid_prefix = ""PARTUUID:""sv;
 
@@ -61,6 +66,7 @@ u32 StorageManagement::generate_relative_nvme_controller_id(Badge<NVMeController
     s_relative_nvme_controller_id++;
     return controller_id;
 }
+
 u32 StorageManagement::generate_relative_ata_controller_id(Badge<ATAController>)
 {
     auto controller_id = s_relative_ata_controller_id.load();
@@ -68,6 +74,13 @@ u32 StorageManagement::generate_relative_ata_controller_id(Badge<ATAController>)
     return controller_id;
 }
 
+u32 StorageManagement::generate_relative_sd_controller_id(Badge<SDHostController>)
+{
+    auto controller_id = s_relative_sd_controller_id.load();
+    s_relative_sd_controller_id++;
+    return controller_id;
+}
+
 void StorageManagement::remove_device(StorageDevice& device)
 {
     m_storage_devices.remove(device);
@@ -445,6 +458,16 @@ UNMAP_AFTER_INIT void StorageManagement::initialize(StringView root_device, bool
     } else {
         enumerate_pci_controllers(force_pio, poll);
     }
+
+#if ARCH(AARCH64)
+    auto& rpi_sdhc = RPi::SDHostController::the();
+    if (auto maybe_error = rpi_sdhc.initialize(); maybe_error.is_error()) {
+        dmesgln(""Unable to initialize RaspberryPi's SD Host Controller: {}"", maybe_error.error());
+    } else {
+        m_controllers.append(rpi_sdhc);
+    }
+#endif
+
     // Note: Whether PCI bus is present on the system or not, always try to attach
     // a given ramdisk.
     auto controller = RamdiskController::try_initialize();
diff --git a/Kernel/Storage/StorageManagement.h b/Kernel/Storage/StorageManagement.h
index 7e21376c9256..1e97eb595c5d 100644
--- a/Kernel/Storage/StorageManagement.h
+++ b/Kernel/Storage/StorageManagement.h
@@ -11,6 +11,7 @@
 #include <Kernel/FileSystem/FileSystem.h>
 #include <Kernel/Library/NonnullLockRefPtr.h>
 #include <Kernel/Storage/DiskPartition.h>
+#include <Kernel/Storage/SD/SDHostController.h>
 #include <Kernel/Storage/StorageController.h>
 #include <Kernel/Storage/StorageDevice.h>
 #include <LibPartition/PartitionTable.h>
@@ -37,6 +38,7 @@ class StorageManagement {
 
     static u32 generate_relative_nvme_controller_id(Badge<NVMeController>);
     static u32 generate_relative_ata_controller_id(Badge<ATAController>);
+    static u32 generate_relative_sd_controller_id(Badge<SDHostController>);
 
     void remove_device(StorageDevice&);"
7dbe357e9f52035381d030631ebecfd5bb555fe9,2024-01-22 04:46:15,Dan Klishch,ak: Simplify String::from_stream by leveraging StringBase helpers,False,Simplify String::from_stream by leveraging StringBase helpers,ak,"diff --git a/AK/String.cpp b/AK/String.cpp
index bdd2379b1eeb..2c9c8ec14212 100644
--- a/AK/String.cpp
+++ b/AK/String.cpp
@@ -64,28 +64,6 @@ ErrorOr<NonnullRefPtr<StringData>> StringData::create_uninitialized(size_t byte_
     return new_string_data;
 }
 
-static ErrorOr<void> read_stream_into_buffer(Stream& stream, Bytes buffer)
-{
-    TRY(stream.read_until_filled(buffer));
-
-    if (!Utf8View { StringView { buffer } }.validate())
-        return Error::from_string_literal(""String::from_stream: Input was not valid UTF-8"");
-
-    return {};
-}
-
-ErrorOr<NonnullRefPtr<StringData>> StringData::from_stream(Stream& stream, size_t byte_count)
-{
-    // Strings of MAX_SHORT_STRING_BYTE_COUNT bytes or less should be handled by the String short string optimization.
-    VERIFY(byte_count > String::MAX_SHORT_STRING_BYTE_COUNT);
-
-    u8* buffer = nullptr;
-    auto new_string_data = TRY(create_uninitialized(byte_count, buffer));
-    TRY(read_stream_into_buffer(stream, { buffer, byte_count }));
-
-    return new_string_data;
-}
-
 ErrorOr<NonnullRefPtr<StringData>> StringData::create_substring(StringData const& superstring, size_t start, size_t byte_count)
 {
     // Strings of MAX_SHORT_STRING_BYTE_COUNT bytes or less should be handled by the String short string optimization.
@@ -135,15 +113,14 @@ ErrorOr<String> String::from_utf8(StringView view)
 
 ErrorOr<String> String::from_stream(Stream& stream, size_t byte_count)
 {
-    if (byte_count <= MAX_SHORT_STRING_BYTE_COUNT) {
-        ShortString short_string;
-        if (byte_count > 0)
-            TRY(Detail::read_stream_into_buffer(stream, { short_string.storage, byte_count }));
-        short_string.byte_count_and_short_string_flag = (byte_count << 1) | SHORT_STRING_FLAG;
-        return String { short_string };
-    }
-    auto data = TRY(Detail::StringData::from_stream(stream, byte_count));
-    return String { move(data) };
+    String result;
+    TRY(result.replace_with_new_string(byte_count, [&](Bytes buffer) -> ErrorOr<void> {
+        TRY(stream.read_until_filled(buffer));
+        if (!Utf8View { StringView { buffer } }.validate())
+            return Error::from_string_literal(""String::from_stream: Input was not valid UTF-8"");
+        return {};
+    }));
+    return result;
 }
 
 ErrorOr<String> String::repeated(u32 code_point, size_t count)
diff --git a/AK/StringInternals.h b/AK/StringInternals.h
index 0e6f411d94f0..39d0217f86f7 100644
--- a/AK/StringInternals.h
+++ b/AK/StringInternals.h
@@ -17,7 +17,6 @@ class StringData final : public RefCounted<StringData> {
 public:
     static ErrorOr<NonnullRefPtr<StringData>> create_uninitialized(size_t, u8*& buffer);
     static ErrorOr<NonnullRefPtr<StringData>> create_substring(StringData const& superstring, size_t start, size_t byte_count);
-    static ErrorOr<NonnullRefPtr<StringData>> from_stream(Stream&, size_t byte_count);
 
     struct SubstringData {
         StringData const* superstring { nullptr };"
3226ce3d8354b918d0c6803fd4c24a612852660b,2023-01-27 01:55:25,Evan Smal,libjs: Remove some usage of DeprecatedString usage from Lexer,False,Remove some usage of DeprecatedString usage from Lexer,libjs,"diff --git a/Userland/Libraries/LibJS/Lexer.cpp b/Userland/Libraries/LibJS/Lexer.cpp
index 366fe8948c4b..141c0db911bd 100644
--- a/Userland/Libraries/LibJS/Lexer.cpp
+++ b/Userland/Libraries/LibJS/Lexer.cpp
@@ -24,7 +24,7 @@ HashMap<char, TokenType> Lexer::s_single_char_tokens;
 Lexer::Lexer(StringView source, StringView filename, size_t line_number, size_t line_column)
     : m_source(source)
     , m_current_token(TokenType::Eof, {}, {}, {}, filename, 0, 0, 0)
-    , m_filename(filename)
+    , m_filename(String::from_utf8(filename).release_value_but_fixme_should_propagate_errors())
     , m_line_number(line_number)
     , m_line_column(line_column)
     , m_parsed_identifiers(adopt_ref(*new ParsedIdentifiers))
diff --git a/Userland/Libraries/LibJS/Lexer.h b/Userland/Libraries/LibJS/Lexer.h
index 889c78a5ffd0..dfce81c795bc 100644
--- a/Userland/Libraries/LibJS/Lexer.h
+++ b/Userland/Libraries/LibJS/Lexer.h
@@ -10,6 +10,7 @@
 
 #include <AK/DeprecatedString.h>
 #include <AK/HashMap.h>
+#include <AK/String.h>
 #include <AK/StringView.h>
 
 namespace JS {
@@ -21,7 +22,7 @@ class Lexer {
     Token next();
 
     DeprecatedString const& source() const { return m_source; };
-    DeprecatedString const& filename() const { return m_filename; };
+    String const& filename() const { return m_filename; };
 
     void disallow_html_comments() { m_allow_html_comments = false; };
 
@@ -63,7 +64,7 @@ class Lexer {
     char m_current_char { 0 };
     bool m_eof { false };
 
-    DeprecatedString m_filename;
+    String m_filename;
     size_t m_line_number { 1 };
     size_t m_line_column { 0 };
 
diff --git a/Userland/Libraries/LibJS/Parser.cpp b/Userland/Libraries/LibJS/Parser.cpp
index 25ceaf4f1f58..2a9c0c4b75a1 100644
--- a/Userland/Libraries/LibJS/Parser.cpp
+++ b/Userland/Libraries/LibJS/Parser.cpp
@@ -409,7 +409,7 @@ Parser::ParserState::ParserState(Lexer l, Program::Type program_type)
 }
 
 Parser::Parser(Lexer lexer, Program::Type program_type, Optional<EvalInitialState> initial_state_for_eval)
-    : m_source_code(SourceCode::create(String::from_deprecated_string(lexer.filename()).release_value_but_fixme_should_propagate_errors(), String::from_deprecated_string(lexer.source()).release_value_but_fixme_should_propagate_errors()))
+    : m_source_code(SourceCode::create(lexer.filename(), String::from_deprecated_string(lexer.source()).release_value_but_fixme_should_propagate_errors()))
     , m_state(move(lexer), program_type)
     , m_program_type(program_type)
 {"
a545935997be3701aeb2b8718837efe83f7a0a8b,2024-01-04 15:53:20,Shannon Booth,libweb: Create XML Documents in DOMParser.parseFromString,False,Create XML Documents in DOMParser.parseFromString,libweb,"diff --git a/Tests/LibWeb/Text/expected/DOM/DOMParser-xml-document.txt b/Tests/LibWeb/Text/expected/DOM/DOMParser-xml-document.txt
new file mode 100644
index 000000000000..7b4c1cfe7627
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/DOM/DOMParser-xml-document.txt
@@ -0,0 +1 @@
+XMLDocument
diff --git a/Tests/LibWeb/Text/input/DOM/DOMParser-xml-document.html b/Tests/LibWeb/Text/input/DOM/DOMParser-xml-document.html
new file mode 100644
index 000000000000..699feb9a5c82
--- /dev/null
+++ b/Tests/LibWeb/Text/input/DOM/DOMParser-xml-document.html
@@ -0,0 +1,8 @@
+<script src=""../include.js""></script>
+<script>
+    test(() => {
+        const parser = new DOMParser();
+        const xmlDoc = parser.parseFromString('<svg></svg>', ""text/xml"");
+        println(xmlDoc.constructor.name);
+    });
+</script>
diff --git a/Userland/Libraries/LibWeb/HTML/DOMParser.cpp b/Userland/Libraries/LibWeb/HTML/DOMParser.cpp
index 81618082a547..c18582defe0a 100644
--- a/Userland/Libraries/LibWeb/HTML/DOMParser.cpp
+++ b/Userland/Libraries/LibWeb/HTML/DOMParser.cpp
@@ -6,6 +6,7 @@
 
 #include <LibWeb/Bindings/DOMParserPrototype.h>
 #include <LibWeb/Bindings/MainThreadVM.h>
+#include <LibWeb/DOM/XMLDocument.h>
 #include <LibWeb/HTML/DOMParser.h>
 #include <LibWeb/HTML/HTMLDocument.h>
 #include <LibWeb/HTML/Parser/HTMLParser.h>
@@ -59,7 +60,7 @@ JS::NonnullGCPtr<DOM::Document> DOMParser::parse_from_string(StringView string,
         parser->run(""about:blank""sv);
     } else {
         // -> Otherwise
-        document = DOM::Document::create(realm(), verify_cast<HTML::Window>(relevant_global_object(*this)).associated_document().url());
+        document = DOM::XMLDocument::create(realm(), verify_cast<HTML::Window>(relevant_global_object(*this)).associated_document().url());
         document->set_content_type(Bindings::idl_enum_to_string(type));
 
         // 1. Create an XML parser parse, associated with document, and with XML scripting support disabled."
54b8a2b094c1f8ec94acedcc89d314a7b90f572f,2022-11-03 09:34:34,Moustafa Raafat,libcrypto: Add a way to compare UnsignedBigInteger with double,False,Add a way to compare UnsignedBigInteger with double,libcrypto,"diff --git a/Tests/LibCrypto/TestBigInteger.cpp b/Tests/LibCrypto/TestBigInteger.cpp
index 3332cc065ecf..d2103ae8cdd2 100644
--- a/Tests/LibCrypto/TestBigInteger.cpp
+++ b/Tests/LibCrypto/TestBigInteger.cpp
@@ -660,9 +660,9 @@ TEST_CASE(test_negative_zero_is_not_allowed)
 }
 
 TEST_CASE(double_comparisons) {
-#define EXPECT_LESS_THAN(bigint, double_value) EXPECT_EQ(bigint.compare_to_double(double_value), Crypto::SignedBigInteger::CompareResult::DoubleGreaterThanBigInt)
-#define EXPECT_GREATER_THAN(bigint, double_value) EXPECT_EQ(bigint.compare_to_double(double_value), Crypto::SignedBigInteger::CompareResult::DoubleLessThanBigInt)
-#define EXPECT_EQUAL_TO(bigint, double_value) EXPECT_EQ(bigint.compare_to_double(double_value), Crypto::SignedBigInteger::CompareResult::DoubleEqualsBigInt)
+#define EXPECT_LESS_THAN(bigint, double_value) EXPECT_EQ(bigint.compare_to_double(double_value), Crypto::UnsignedBigInteger::CompareResult::DoubleGreaterThanBigInt)
+#define EXPECT_GREATER_THAN(bigint, double_value) EXPECT_EQ(bigint.compare_to_double(double_value), Crypto::UnsignedBigInteger::CompareResult::DoubleLessThanBigInt)
+#define EXPECT_EQUAL_TO(bigint, double_value) EXPECT_EQ(bigint.compare_to_double(double_value), Crypto::UnsignedBigInteger::CompareResult::DoubleEqualsBigInt)
     { Crypto::SignedBigInteger zero { 0 };
 EXPECT_EQUAL_TO(zero, 0.0);
 EXPECT_EQUAL_TO(zero, -0.0);
@@ -687,6 +687,14 @@ EXPECT_EQUAL_TO(zero, -0.0);
     EXPECT_GREATER_THAN(one, -1.000001);
 }
 
+{
+    double double_infinity = HUGE_VAL;
+    VERIFY(isinf(double_infinity));
+    Crypto::SignedBigInteger one { 1 };
+    EXPECT_LESS_THAN(one, double_infinity);
+    EXPECT_GREATER_THAN(one, -double_infinity);
+}
+
 {
     double double_max_value = NumericLimits<double>::max();
     double double_below_max_value = nextafter(double_max_value, 0.0);
@@ -938,18 +946,86 @@ TEST_CASE(bigint_from_double)
 #undef SURVIVES_ROUND_TRIP_SIGNED
 #undef SURVIVES_ROUND_TRIP_UNSIGNED
 }
+
+TEST_CASE(unsigned_bigint_double_comparisons)
+{
+#define EXPECT_LESS_THAN(bigint, double_value) EXPECT_EQ(bigint.compare_to_double(double_value), Crypto::UnsignedBigInteger::CompareResult::DoubleGreaterThanBigInt)
+#define EXPECT_GREATER_THAN(bigint, double_value) EXPECT_EQ(bigint.compare_to_double(double_value), Crypto::UnsignedBigInteger::CompareResult::DoubleLessThanBigInt)
+#define EXPECT_EQUAL_TO(bigint, double_value) EXPECT_EQ(bigint.compare_to_double(double_value), Crypto::UnsignedBigInteger::CompareResult::DoubleEqualsBigInt)
+
+    {
+        Crypto::UnsignedBigInteger zero { 0 };
+        EXPECT_EQUAL_TO(zero, 0.0);
+        EXPECT_EQUAL_TO(zero, -0.0);
+    }
+
+    {
+        Crypto::UnsignedBigInteger one { 1 };
+        EXPECT_EQUAL_TO(one, 1.0);
+        EXPECT_GREATER_THAN(one, -1.0);
+        EXPECT_GREATER_THAN(one, 0.5);
+        EXPECT_GREATER_THAN(one, -0.5);
+        EXPECT_LESS_THAN(one, 1.000001);
+    }
+
+    {
+        double double_infinity = HUGE_VAL;
+        VERIFY(isinf(double_infinity));
+        Crypto::UnsignedBigInteger one { 1 };
+        EXPECT_LESS_THAN(one, double_infinity);
+        EXPECT_GREATER_THAN(one, -double_infinity);
+    }
+
+    {
+        double double_max_value = NumericLimits<double>::max();
+        double double_below_max_value = nextafter(double_max_value, 0.0);
+        VERIFY(double_below_max_value < double_max_value);
+        VERIFY(double_below_max_value < (double_max_value - 1.0));
+        auto max_value_in_bigint = Crypto::UnsignedBigInteger::from_base(16, ""fffffffffffff800000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000""sv);
+        auto max_value_plus_one = max_value_in_bigint.plus(Crypto::UnsignedBigInteger { 1 });
+        auto max_value_minus_one = max_value_in_bigint.minus(Crypto::UnsignedBigInteger { 1 });
+
+        auto below_max_value_in_bigint = Crypto::UnsignedBigInteger::from_base(16, ""fffffffffffff000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000""sv);
+
+        EXPECT_EQUAL_TO(max_value_in_bigint, double_max_value);
+        EXPECT_LESS_THAN(max_value_minus_one, double_max_value);
+        EXPECT_GREATER_THAN(max_value_plus_one, double_max_value);
+        EXPECT_LESS_THAN(below_max_value_in_bigint, double_max_value);
+
+        EXPECT_GREATER_THAN(max_value_in_bigint, double_below_max_value);
+        EXPECT_GREATER_THAN(max_value_minus_one, double_below_max_value);
+        EXPECT_GREATER_THAN(max_value_plus_one, double_below_max_value);
+        EXPECT_EQUAL_TO(below_max_value_in_bigint, double_below_max_value);
+    }
+
+    {
+        double just_above_255 = bit_cast<double>(0x406fe00000000001ULL);
+        double just_below_255 = bit_cast<double>(0x406fdfffffffffffULL);
+        double double_255 = 255.0;
+        Crypto::UnsignedBigInteger bigint_255 { 255 };
+
+        EXPECT_EQUAL_TO(bigint_255, double_255);
+        EXPECT_GREATER_THAN(bigint_255, just_below_255);
+        EXPECT_LESS_THAN(bigint_255, just_above_255);
+    }
+
+#undef EXPECT_LESS_THAN
+#undef EXPECT_GREATER_THAN
+#undef EXPECT_EQUAL_TO
+}
+
 namespace AK {
 
 template<>
-struct Formatter<Crypto::SignedBigInteger::CompareResult> : Formatter<StringView> {
-    ErrorOr<void> format(FormatBuilder& builder, Crypto::SignedBigInteger::CompareResult const& compare_result)
+struct Formatter<Crypto::UnsignedBigInteger::CompareResult> : Formatter<StringView> {
+    ErrorOr<void> format(FormatBuilder& builder, Crypto::UnsignedBigInteger::CompareResult const& compare_result)
     {
         switch (compare_result) {
-        case Crypto::SignedBigInteger::CompareResult::DoubleEqualsBigInt:
+        case Crypto::UnsignedBigInteger::CompareResult::DoubleEqualsBigInt:
             return builder.put_string(""Equals""sv);
-        case Crypto::SignedBigInteger::CompareResult::DoubleLessThanBigInt:
+        case Crypto::UnsignedBigInteger::CompareResult::DoubleLessThanBigInt:
             return builder.put_string(""LessThan""sv);
-        case Crypto::SignedBigInteger::CompareResult::DoubleGreaterThanBigInt:
+        case Crypto::UnsignedBigInteger::CompareResult::DoubleGreaterThanBigInt:
             return builder.put_string(""GreaterThan""sv);
         default:
             return builder.put_string(""???""sv);
diff --git a/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.cpp b/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.cpp
index 9a178410328b..4b42bdc5423e 100644
--- a/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.cpp
+++ b/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.cpp
@@ -351,153 +351,31 @@ bool SignedBigInteger::operator>=(SignedBigInteger const& other) const
     return !(*this < other);
 }
 
-SignedBigInteger::CompareResult SignedBigInteger::compare_to_double(double value) const
+UnsignedBigInteger::CompareResult SignedBigInteger::compare_to_double(double value) const
 {
-    VERIFY(!isnan(value));
-
-    if (isinf(value)) {
-        bool is_positive_infinity = __builtin_isinf_sign(value) > 0;
-        return is_positive_infinity ? CompareResult::DoubleGreaterThanBigInt : CompareResult::DoubleLessThanBigInt;
-    }
-
     bool bigint_is_negative = m_sign;
 
     bool value_is_negative = value < 0;
 
     if (value_is_negative != bigint_is_negative)
-        return bigint_is_negative ? CompareResult::DoubleGreaterThanBigInt : CompareResult::DoubleLessThanBigInt;
-
-    // Value is zero, and from above the signs must be the same.
-    if (value == 0.0) {
-        VERIFY(!value_is_negative && !bigint_is_negative);
-        // Either we are also zero or value is certainly less than us.
-        return is_zero() ? CompareResult::DoubleEqualsBigInt : CompareResult::DoubleLessThanBigInt;
-    }
-
-    // If value is not zero but we are, then since the signs are the same value must be greater.
-    if (is_zero())
-        return CompareResult::DoubleGreaterThanBigInt;
-
-    constexpr u64 mantissa_size = 52;
-    constexpr u64 exponent_size = 11;
-    constexpr auto exponent_bias = (1 << (exponent_size - 1)) - 1;
-    union FloatExtractor {
-        struct {
-            unsigned long long mantissa : mantissa_size;
-            unsigned exponent : exponent_size;
-            unsigned sign : 1;
-        };
-        double d;
-    } extractor;
-
-    extractor.d = value;
-    VERIFY(extractor.exponent != (1 << exponent_size) - 1);
-    // Exponent cannot be filled as than we must be NaN or infinity.
-
-    i32 real_exponent = extractor.exponent - exponent_bias;
-    if (real_exponent < 0) {
-        // |value| is less than 1, and we cannot be zero so if we are negative
-        // value must be greater and vice versa.
-        return bigint_is_negative ? CompareResult::DoubleGreaterThanBigInt : CompareResult::DoubleLessThanBigInt;
-    }
-
-    u64 bigint_bits_needed = m_unsigned_data.one_based_index_of_highest_set_bit();
-    VERIFY(bigint_bits_needed > 0);
-
-    // Double value is `-1^sign (1.mantissa) * 2^(exponent - bias)` so we need
-    // `exponent - bias + 1` bit to represent doubles value,
-    // for example `exponent - bias` = 3, sign = 0 and mantissa = 0 we get
-    // `-1^0 * 2^3 * 1 = 8` which needs 4 bits to store 8 (0b1000).
-    u32 double_bits_needed = real_exponent + 1;
-
-    if (bigint_bits_needed > double_bits_needed) {
-        // If we need more bits to represent us, we must be of greater magnitude
-        // this means that if we are negative we are below value and if positive above value.
-        return bigint_is_negative ? CompareResult::DoubleGreaterThanBigInt : CompareResult::DoubleLessThanBigInt;
-    }
-
-    if (bigint_bits_needed < double_bits_needed)
-        return bigint_is_negative ? CompareResult::DoubleLessThanBigInt : CompareResult::DoubleGreaterThanBigInt;
-
-    u64 mantissa_bits = extractor.mantissa;
-
-    // We add the bit which represents the 1. of the double value calculation
-    constexpr u64 mantissa_extended_bit = 1ull << mantissa_size;
-
-    mantissa_bits |= mantissa_extended_bit;
-
-    // Now we shift value to the left virtually, with `exponent - bias` steps
-    // we then pretend both it and the big int are extended with virtual zeros.
-    using Word = UnsignedBigInteger::Word;
-    auto next_bigint_word = (UnsignedBigInteger::BITS_IN_WORD - 1 + bigint_bits_needed) / UnsignedBigInteger::BITS_IN_WORD;
-
-    VERIFY(next_bigint_word + 1 == trimmed_length());
-
-    auto msb_in_top_word_index = (bigint_bits_needed - 1) % UnsignedBigInteger::BITS_IN_WORD;
-    VERIFY(msb_in_top_word_index == (UnsignedBigInteger::BITS_IN_WORD - count_leading_zeroes(words()[next_bigint_word - 1]) - 1));
-
-    // We will keep the bits which are still valid in the mantissa at the top of mantissa bits.
-    mantissa_bits <<= 64 - (mantissa_size + 1);
-
-    auto bits_left_in_mantissa = mantissa_size + 1;
-
-    auto get_next_value_bits = [&](size_t num_bits) -> Word {
-        VERIFY(num_bits < 63);
-        VERIFY(bits_left_in_mantissa > 0);
-        if (num_bits > bits_left_in_mantissa)
-            num_bits = bits_left_in_mantissa;
-
-        bits_left_in_mantissa -= num_bits;
-
-        u64 extracted_bits = mantissa_bits & (((1ull << num_bits) - 1) << (64 - num_bits));
-        // Now shift the bits down to put the most significant bit on the num_bits position
-        // this means the rest will be ""virtual"" zeros.
-        extracted_bits >>= 32;
-
-        // Now shift away the used bits and fit the result into a Word.
-        mantissa_bits <<= num_bits;
-
-        VERIFY(extracted_bits <= NumericLimits<Word>::max());
-        return static_cast<Word>(extracted_bits);
-    };
-
-    auto bits_in_next_bigint_word = msb_in_top_word_index + 1;
-
-    while (next_bigint_word > 0 && bits_left_in_mantissa > 0) {
-        Word bigint_word = words()[next_bigint_word - 1];
-        Word double_word = get_next_value_bits(bits_in_next_bigint_word);
-
-        // For the first bit we have to align it with the top bit of bigint
-        // and for all the other cases bits_in_next_bigint_word is 32 so this does nothing.
-        double_word >>= 32 - bits_in_next_bigint_word;
-
-        if (bigint_word < double_word)
-            return value_is_negative ? CompareResult::DoubleLessThanBigInt : CompareResult::DoubleGreaterThanBigInt;
-
-        if (bigint_word > double_word)
-            return value_is_negative ? CompareResult::DoubleGreaterThanBigInt : CompareResult::DoubleLessThanBigInt;
-
-        --next_bigint_word;
-        bits_in_next_bigint_word = UnsignedBigInteger::BITS_IN_WORD;
+        return bigint_is_negative ? UnsignedBigInteger::CompareResult::DoubleGreaterThanBigInt : UnsignedBigInteger::CompareResult::DoubleLessThanBigInt;
+
+    // Now both bigint and value have the same sign, so let's compare our magnitudes.
+    auto magnitudes_compare_result = m_unsigned_data.compare_to_double(fabs(value));
+
+    // If our mangnitudes are euqal, then we're equal.
+    if (magnitudes_compare_result == UnsignedBigInteger::CompareResult::DoubleEqualsBigInt)
+        return UnsignedBigInteger::CompareResult::DoubleEqualsBigInt;
+
+    // If we're negative, revert the comparison result, otherwise return the same result.
+    if (value_is_negative) {
+        if (magnitudes_compare_result == UnsignedBigInteger::CompareResult::DoubleLessThanBigInt)
+            return UnsignedBigInteger::CompareResult::DoubleGreaterThanBigInt;
+        else
+            return UnsignedBigInteger::CompareResult::DoubleLessThanBigInt;
+    } else {
+        return magnitudes_compare_result;
     }
-
-    // If there are still bits left in bigint than any non zero bit means it has greater magnitude.
-    if (next_bigint_word > 0) {
-        VERIFY(bits_left_in_mantissa == 0);
-        while (next_bigint_word > 0) {
-            if (words()[next_bigint_word - 1] != 0)
-                return value_is_negative ? CompareResult::DoubleGreaterThanBigInt : CompareResult::DoubleLessThanBigInt;
-            --next_bigint_word;
-        }
-    } else if (bits_left_in_mantissa > 0) {
-        VERIFY(next_bigint_word == 0);
-        // Similarly if there are still any bits set in the mantissa it has greater magnitude.
-        if (mantissa_bits != 0)
-            return value_is_negative ? CompareResult::DoubleLessThanBigInt : CompareResult::DoubleGreaterThanBigInt;
-    }
-
-    // Otherwise if both don't have bits left or the rest of the bits are zero they are equal.
-    return CompareResult::DoubleEqualsBigInt;
 }
 
 }
diff --git a/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.h b/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.h
index a9adba2fd034..66666adfb515 100644
--- a/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.h
+++ b/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.h
@@ -140,13 +140,7 @@ class SignedBigInteger {
     [[nodiscard]] bool operator<(UnsignedBigInteger const& other) const;
     [[nodiscard]] bool operator>(UnsignedBigInteger const& other) const;
 
-    enum class CompareResult {
-        DoubleEqualsBigInt,
-        DoubleLessThanBigInt,
-        DoubleGreaterThanBigInt
-    };
-
-    [[nodiscard]] CompareResult compare_to_double(double) const;
+    [[nodiscard]] UnsignedBigInteger::CompareResult compare_to_double(double) const;
 
 private:
     void ensure_sign_is_valid()
diff --git a/Userland/Libraries/LibCrypto/BigInt/UnsignedBigInteger.cpp b/Userland/Libraries/LibCrypto/BigInt/UnsignedBigInteger.cpp
index cefcf6e796fb..6c8e7a4e6914 100644
--- a/Userland/Libraries/LibCrypto/BigInt/UnsignedBigInteger.cpp
+++ b/Userland/Libraries/LibCrypto/BigInt/UnsignedBigInteger.cpp
@@ -602,6 +602,151 @@ bool UnsignedBigInteger::operator>=(UnsignedBigInteger const& other) const
     return *this > other || *this == other;
 }
 
+UnsignedBigInteger::CompareResult UnsignedBigInteger::compare_to_double(double value) const
+{
+    VERIFY(!isnan(value));
+
+    if (isinf(value)) {
+        bool is_positive_infinity = __builtin_isinf_sign(value) > 0;
+        return is_positive_infinity ? CompareResult::DoubleGreaterThanBigInt : CompareResult::DoubleLessThanBigInt;
+    }
+
+    bool value_is_negative = value < 0;
+
+    if (value_is_negative)
+        return CompareResult::DoubleLessThanBigInt;
+
+    // Value is zero.
+    if (value == 0.0) {
+        VERIFY(!value_is_negative);
+        // Either we are also zero or value is certainly less than us.
+        return is_zero() ? CompareResult::DoubleEqualsBigInt : CompareResult::DoubleLessThanBigInt;
+    }
+
+    // If value is not zero but we are, value must be greater.
+    if (is_zero())
+        return CompareResult::DoubleGreaterThanBigInt;
+
+    constexpr u64 mantissa_size = 52;
+    constexpr u64 exponent_size = 11;
+    constexpr auto exponent_bias = (1 << (exponent_size - 1)) - 1;
+    union FloatExtractor {
+        struct {
+            unsigned long long mantissa : mantissa_size;
+            unsigned exponent : exponent_size;
+            unsigned sign : 1;
+        };
+        double d;
+    } extractor;
+
+    extractor.d = value;
+    // Value cannot be negative at this point.
+    VERIFY(extractor.sign == 0);
+    // Exponent cannot be all set, as then we must be NaN or infinity.
+    VERIFY(extractor.exponent != (1 << exponent_size) - 1);
+
+    i32 real_exponent = extractor.exponent - exponent_bias;
+    if (real_exponent < 0) {
+        // value is less than 1, and we cannot be zero so value must be less.
+        return CompareResult::DoubleLessThanBigInt;
+    }
+
+    u64 bigint_bits_needed = one_based_index_of_highest_set_bit();
+    VERIFY(bigint_bits_needed > 0);
+
+    // Double value is `-1^sign (1.mantissa) * 2^(exponent - bias)` so we need
+    // `exponent - bias + 1` bit to represent doubles value,
+    // for example `exponent - bias` = 3, sign = 0 and mantissa = 0 we get
+    // `-1^0 * 2^3 * 1 = 8` which needs 4 bits to store 8 (0b1000).
+    u32 double_bits_needed = real_exponent + 1;
+
+    // If we need more bits to represent us, we must be of greater value.
+    if (bigint_bits_needed > double_bits_needed)
+        return CompareResult::DoubleLessThanBigInt;
+    // If we need less bits to represent us, we must be of less value.
+    if (bigint_bits_needed < double_bits_needed)
+        return CompareResult::DoubleGreaterThanBigInt;
+
+    u64 mantissa_bits = extractor.mantissa;
+
+    // We add the bit which represents the 1. of the double value calculation.
+    constexpr u64 mantissa_extended_bit = 1ull << mantissa_size;
+
+    mantissa_bits |= mantissa_extended_bit;
+
+    // Now we shift value to the left virtually, with `exponent - bias` steps
+    // we then pretend both it and the big int are extended with virtual zeros.
+    auto next_bigint_word = (BITS_IN_WORD - 1 + bigint_bits_needed) / BITS_IN_WORD;
+
+    VERIFY(next_bigint_word == trimmed_length());
+
+    auto msb_in_top_word_index = (bigint_bits_needed - 1) % BITS_IN_WORD;
+    VERIFY(msb_in_top_word_index == (BITS_IN_WORD - count_leading_zeroes(words()[next_bigint_word - 1]) - 1));
+
+    // We will keep the bits which are still valid in the mantissa at the top of mantissa bits.
+    mantissa_bits <<= 64 - (mantissa_size + 1);
+
+    auto bits_left_in_mantissa = mantissa_size + 1;
+
+    auto get_next_value_bits = [&](size_t num_bits) -> Word {
+        VERIFY(num_bits < 63);
+        VERIFY(bits_left_in_mantissa > 0);
+        if (num_bits > bits_left_in_mantissa)
+            num_bits = bits_left_in_mantissa;
+
+        bits_left_in_mantissa -= num_bits;
+
+        u64 extracted_bits = mantissa_bits & (((1ull << num_bits) - 1) << (64 - num_bits));
+        // Now shift the bits down to put the most significant bit on the num_bits position
+        // this means the rest will be ""virtual"" zeros.
+        extracted_bits >>= 32;
+
+        // Now shift away the used bits and fit the result into a Word.
+        mantissa_bits <<= num_bits;
+
+        VERIFY(extracted_bits <= NumericLimits<Word>::max());
+        return static_cast<Word>(extracted_bits);
+    };
+
+    auto bits_in_next_bigint_word = msb_in_top_word_index + 1;
+
+    while (next_bigint_word > 0 && bits_left_in_mantissa > 0) {
+        Word bigint_word = words()[next_bigint_word - 1];
+        Word double_word = get_next_value_bits(bits_in_next_bigint_word);
+
+        // For the first bit we have to align it with the top bit of bigint
+        // and for all the other cases bits_in_next_bigint_word is 32 so this does nothing.
+        double_word >>= 32 - bits_in_next_bigint_word;
+
+        if (bigint_word < double_word)
+            return CompareResult::DoubleGreaterThanBigInt;
+
+        if (bigint_word > double_word)
+            return CompareResult::DoubleLessThanBigInt;
+
+        --next_bigint_word;
+        bits_in_next_bigint_word = BITS_IN_WORD;
+    }
+
+    // If there are still bits left in bigint than any non zero bit means it has greater value.
+    if (next_bigint_word > 0) {
+        VERIFY(bits_left_in_mantissa == 0);
+        while (next_bigint_word > 0) {
+            if (words()[next_bigint_word - 1] != 0)
+                return CompareResult::DoubleLessThanBigInt;
+            --next_bigint_word;
+        }
+    } else if (bits_left_in_mantissa > 0) {
+        VERIFY(next_bigint_word == 0);
+        // Similarly if there are still any bits set in the mantissa it has greater value.
+        if (mantissa_bits != 0)
+            return CompareResult::DoubleGreaterThanBigInt;
+    }
+
+    // Otherwise if both don't have bits left or the rest of the bits are zero they are equal.
+    return CompareResult::DoubleEqualsBigInt;
+}
+
 }
 
 ErrorOr<void> AK::Formatter<Crypto::UnsignedBigInteger>::format(FormatBuilder& fmtbuilder, Crypto::UnsignedBigInteger const& value)
diff --git a/Userland/Libraries/LibCrypto/BigInt/UnsignedBigInteger.h b/Userland/Libraries/LibCrypto/BigInt/UnsignedBigInteger.h
index aebf6c19a407..4a7161aba9d1 100644
--- a/Userland/Libraries/LibCrypto/BigInt/UnsignedBigInteger.h
+++ b/Userland/Libraries/LibCrypto/BigInt/UnsignedBigInteger.h
@@ -121,6 +121,14 @@ class UnsignedBigInteger {
     [[nodiscard]] bool operator>(UnsignedBigInteger const& other) const;
     [[nodiscard]] bool operator>=(UnsignedBigInteger const& other) const;
 
+    enum class CompareResult {
+        DoubleEqualsBigInt,
+        DoubleLessThanBigInt,
+        DoubleGreaterThanBigInt
+    };
+
+    [[nodiscard]] CompareResult compare_to_double(double) const;
+
 private:
     friend class UnsignedBigIntegerAlgorithms;
     // Little endian
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTime.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTime.cpp
index 7d84ba0c32b2..f93ee686d367 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTime.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/ZonedDateTime.cpp
@@ -557,7 +557,7 @@ ThrowCompletionOr<NanosecondsToDaysResult> nanoseconds_to_days(VM& vm, Crypto::S
     // 23. If abs(nanoseconds) ≥ abs(dayLengthNs), throw a RangeError exception.
     auto nanoseconds_absolute = nanoseconds.is_negative() ? nanoseconds.negated_value() : nanoseconds;
     auto compare_result = nanoseconds_absolute.compare_to_double(fabs(day_length_ns.to_double()));
-    if (compare_result == Crypto::SignedBigInteger::CompareResult::DoubleLessThanBigInt || compare_result == Crypto::SignedBigInteger::CompareResult::DoubleEqualsBigInt)
+    if (compare_result == Crypto::UnsignedBigInteger::CompareResult::DoubleLessThanBigInt || compare_result == Crypto::UnsignedBigInteger::CompareResult::DoubleEqualsBigInt)
         return vm.throw_completion<RangeError>(ErrorType::TemporalNanosecondsConvertedToRemainderOfNanosecondsLongerThanDayLength);
 
     // 24. Return the Record { [[Days]]: days, [[Nanoseconds]]: nanoseconds, [[DayLength]]: abs(dayLengthNs) }.
diff --git a/Userland/Libraries/LibJS/Runtime/Value.cpp b/Userland/Libraries/LibJS/Runtime/Value.cpp
index 9ea8b4f4aa2b..dfee82f916a1 100644
--- a/Userland/Libraries/LibJS/Runtime/Value.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Value.cpp
@@ -1536,7 +1536,7 @@ ThrowCompletionOr<bool> is_loosely_equal(VM& vm, Value lhs, Value rhs)
         auto& number_side = lhs.is_number() ? lhs : rhs;
         auto& bigint_side = lhs.is_number() ? rhs : lhs;
 
-        return bigint_side.as_bigint().big_integer().compare_to_double(number_side.as_double()) == Crypto::SignedBigInteger::CompareResult::DoubleEqualsBigInt;
+        return bigint_side.as_bigint().big_integer().compare_to_double(number_side.as_double()) == Crypto::UnsignedBigInteger::CompareResult::DoubleEqualsBigInt;
     }
 
     // 14. Return false.
@@ -1635,10 +1635,10 @@ ThrowCompletionOr<TriState> is_less_than(VM& vm, Value lhs, Value rhs, bool left
     VERIFY(!x_numeric.is_nan() && !y_numeric.is_nan());
     if (x_numeric.is_number()) {
         x_lower_than_y = y_numeric.as_bigint().big_integer().compare_to_double(x_numeric.as_double())
-            == Crypto::SignedBigInteger::CompareResult::DoubleLessThanBigInt;
+            == Crypto::UnsignedBigInteger::CompareResult::DoubleLessThanBigInt;
     } else {
         x_lower_than_y = x_numeric.as_bigint().big_integer().compare_to_double(y_numeric.as_double())
-            == Crypto::SignedBigInteger::CompareResult::DoubleGreaterThanBigInt;
+            == Crypto::UnsignedBigInteger::CompareResult::DoubleGreaterThanBigInt;
     }
     if (x_lower_than_y)
         return TriState::True;"
0465abcfec240f295feb2e31f5f46114200089da,2022-02-24 12:34:25,Sam Atkins,libweb: Implement CSS Resolution class,False,Implement CSS Resolution class,libweb,"diff --git a/Userland/Libraries/LibWeb/CMakeLists.txt b/Userland/Libraries/LibWeb/CMakeLists.txt
index f549b6dc34b8..3478edf9732c 100644
--- a/Userland/Libraries/LibWeb/CMakeLists.txt
+++ b/Userland/Libraries/LibWeb/CMakeLists.txt
@@ -42,6 +42,7 @@ set(SOURCES
     CSS/PropertyID.cpp
     CSS/PropertyID.h
     CSS/QuirksModeStyleSheetSource.cpp
+    CSS/Resolution.cpp
     CSS/ResolvedCSSStyleDeclaration.cpp
     CSS/Screen.cpp
     CSS/Selector.cpp
diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
index 14974066a8b8..ea1f70408404 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -4306,6 +4306,10 @@ Optional<CalculatedStyleValue::CalcValue> Parser::parse_calc_value(TokenStream<S
             return CalculatedStyleValue::CalcValue { dimension.length() };
         if (dimension.is_percentage())
             return CalculatedStyleValue::CalcValue { dimension.percentage() };
+        if (dimension.is_resolution()) {
+            // Resolution is not allowed in calc()
+            return {};
+        }
         VERIFY_NOT_REACHED();
     }
 
diff --git a/Userland/Libraries/LibWeb/CSS/Resolution.cpp b/Userland/Libraries/LibWeb/CSS/Resolution.cpp
new file mode 100644
index 000000000000..6250385e2d03
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/Resolution.cpp
@@ -0,0 +1,67 @@
+/*
+ * Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include ""Resolution.h""
+#include <LibWeb/CSS/StyleValue.h>
+
+namespace Web::CSS {
+
+Resolution::Resolution(int value, Type type)
+    : m_type(type)
+    , m_value(value)
+{
+}
+
+Resolution::Resolution(float value, Type type)
+    : m_type(type)
+    , m_value(value)
+{
+}
+
+String Resolution::to_string() const
+{
+    return String::formatted(""{}{}"", m_value, unit_name());
+}
+
+float Resolution::to_dots_per_pixel() const
+{
+    switch (m_type) {
+    case Type::Dpi:
+        return m_value * 96; // 1in = 2.54cm = 96px
+    case Type::Dpcm:
+        return m_value * (96.0f / 2.54f); // 1cm = 96px/2.54
+    case Type::Dppx:
+        return m_value;
+    }
+    VERIFY_NOT_REACHED();
+}
+
+StringView Resolution::unit_name() const
+{
+    switch (m_type) {
+    case Type::Dpi:
+        return ""dpi""sv;
+    case Type::Dpcm:
+        return ""dpcm""sv;
+    case Type::Dppx:
+        return ""dppx""sv;
+    }
+    VERIFY_NOT_REACHED();
+}
+
+Optional<Resolution::Type> Resolution::unit_from_name(StringView name)
+{
+    if (name.equals_ignoring_case(""dpi""sv)) {
+        return Type::Dpi;
+    } else if (name.equals_ignoring_case(""dpcm""sv)) {
+        return Type::Dpcm;
+    } else if (name.equals_ignoring_case(""dppx""sv)) {
+        return Type::Dppx;
+    }
+    return {};
+}
+
+}
diff --git a/Userland/Libraries/LibWeb/CSS/Resolution.h b/Userland/Libraries/LibWeb/CSS/Resolution.h
new file mode 100644
index 000000000000..589d0705090c
--- /dev/null
+++ b/Userland/Libraries/LibWeb/CSS/Resolution.h
@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2022, Sam Atkins <atkinssj@serenityos.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/String.h>
+#include <LibWeb/Forward.h>
+
+namespace Web::CSS {
+
+class Resolution {
+public:
+    enum class Type {
+        Dpi,
+        Dpcm,
+        Dppx,
+    };
+
+    static Optional<Type> unit_from_name(StringView);
+
+    Resolution(int value, Type type);
+    Resolution(float value, Type type);
+
+    String to_string() const;
+    float to_dots_per_pixel() const;
+
+    bool operator==(Resolution const& other) const
+    {
+        return m_type == other.m_type && m_value == other.m_value;
+    }
+
+    bool operator!=(Resolution const& other) const
+    {
+        return !(*this == other);
+    }
+
+private:
+    StringView unit_name() const;
+
+    Type m_type;
+    float m_value { 0 };
+};
+}
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValue.cpp b/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
index 235096a2e0e5..aaf934842e4a 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleValue.cpp
@@ -165,6 +165,12 @@ PositionStyleValue const& StyleValue::as_position() const
     return static_cast<PositionStyleValue const&>(*this);
 }
 
+ResolutionStyleValue const& StyleValue::as_resolution() const
+{
+    VERIFY(is_resolution());
+    return static_cast<ResolutionStyleValue const&>(*this);
+}
+
 StringStyleValue const& StyleValue::as_string() const
 {
     VERIFY(is_string());
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValue.h b/Userland/Libraries/LibWeb/CSS/StyleValue.h
index 0d3fe3cff6b9..b5e83d3630ee 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValue.h
+++ b/Userland/Libraries/LibWeb/CSS/StyleValue.h
@@ -29,6 +29,7 @@
 #include <LibWeb/CSS/Parser/StyleComponentValueRule.h>
 #include <LibWeb/CSS/Percentage.h>
 #include <LibWeb/CSS/PropertyID.h>
+#include <LibWeb/CSS/Resolution.h>
 #include <LibWeb/CSS/ValueID.h>
 #include <LibWeb/Forward.h>
 #include <LibWeb/Loader/ImageResource.h>
@@ -310,6 +311,7 @@ class StyleValue : public RefCounted<StyleValue> {
         Overflow,
         Percentage,
         Position,
+        Resolution,
         String,
         TextDecoration,
         Transformation,
@@ -343,6 +345,7 @@ class StyleValue : public RefCounted<StyleValue> {
     bool is_overflow() const { return type() == Type::Overflow; }
     bool is_percentage() const { return type() == Type::Percentage; }
     bool is_position() const { return type() == Type::Position; }
+    bool is_resolution() const { return type() == Type::Resolution; }
     bool is_string() const { return type() == Type::String; }
     bool is_text_decoration() const { return type() == Type::TextDecoration; }
     bool is_transformation() const { return type() == Type::Transformation; }
@@ -375,6 +378,7 @@ class StyleValue : public RefCounted<StyleValue> {
     OverflowStyleValue const& as_overflow() const;
     PercentageStyleValue const& as_percentage() const;
     PositionStyleValue const& as_position() const;
+    ResolutionStyleValue const& as_resolution() const;
     StringStyleValue const& as_string() const;
     TextDecorationStyleValue const& as_text_decoration() const;
     TransformationStyleValue const& as_transformation() const;
@@ -405,6 +409,7 @@ class StyleValue : public RefCounted<StyleValue> {
     OverflowStyleValue& as_overflow() { return const_cast<OverflowStyleValue&>(const_cast<StyleValue const&>(*this).as_overflow()); }
     PercentageStyleValue& as_percentage() { return const_cast<PercentageStyleValue&>(const_cast<StyleValue const&>(*this).as_percentage()); }
     PositionStyleValue& as_position() { return const_cast<PositionStyleValue&>(const_cast<StyleValue const&>(*this).as_position()); }
+    ResolutionStyleValue& as_resolution() { return const_cast<ResolutionStyleValue&>(const_cast<StyleValue const&>(*this).as_resolution()); }
     StringStyleValue& as_string() { return const_cast<StringStyleValue&>(const_cast<StyleValue const&>(*this).as_string()); }
     TextDecorationStyleValue& as_text_decoration() { return const_cast<TextDecorationStyleValue&>(const_cast<StyleValue const&>(*this).as_text_decoration()); }
     TransformationStyleValue& as_transformation() { return const_cast<TransformationStyleValue&>(const_cast<StyleValue const&>(*this).as_transformation()); }
@@ -1367,6 +1372,35 @@ class PositionStyleValue final : public StyleValue {
     LengthPercentage m_offset_y;
 };
 
+class ResolutionStyleValue : public StyleValue {
+public:
+    static NonnullRefPtr<ResolutionStyleValue> create(Resolution resolution)
+    {
+        return adopt_ref(*new ResolutionStyleValue(move(resolution)));
+    }
+    virtual ~ResolutionStyleValue() override { }
+
+    Resolution const& resolution() const { return m_resolution; }
+
+    virtual String to_string() const override { return m_resolution.to_string(); }
+
+    virtual bool equals(StyleValue const& other) const override
+    {
+        if (type() != other.type())
+            return false;
+        return m_resolution == static_cast<ResolutionStyleValue const&>(other).m_resolution;
+    }
+
+private:
+    explicit ResolutionStyleValue(Resolution resolution)
+        : StyleValue(Type::Resolution)
+        , m_resolution(move(resolution))
+    {
+    }
+
+    Resolution m_resolution;
+};
+
 class StringStyleValue : public StyleValue {
 public:
     static NonnullRefPtr<StringStyleValue> create(String const& string)
diff --git a/Userland/Libraries/LibWeb/Forward.h b/Userland/Libraries/LibWeb/Forward.h
index 89d521db3f1d..accdbfbaec4a 100644
--- a/Userland/Libraries/LibWeb/Forward.h
+++ b/Userland/Libraries/LibWeb/Forward.h
@@ -64,6 +64,8 @@ class Percentage;
 class PercentageStyleValue;
 class PositionStyleValue;
 class PropertyOwningCSSStyleDeclaration;
+class Resolution;
+class ResolutionStyleValue;
 class Screen;
 class Selector;
 class StringStyleValue;"
47beab926d340cae5983fa7f5e35c8b0ead4e34c,2020-03-02 15:50:34,Andreas Kling,kernel: Remove ability to create kernel-only regions at user addresses,False,Remove ability to create kernel-only regions at user addresses,kernel,"diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index 9d67b0668166..3f6679b1f080 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -207,7 +207,7 @@ Region* Process::allocate_region(VirtualAddress vaddr, size_t size, const String
     return allocate_region(range, name, prot, commit);
 }
 
-Region* Process::allocate_region_with_vmobject(const Range& range, NonnullRefPtr<VMObject> vmobject, size_t offset_in_vmobject, const String& name, int prot, bool user_accessible)
+Region* Process::allocate_region_with_vmobject(const Range& range, NonnullRefPtr<VMObject> vmobject, size_t offset_in_vmobject, const String& name, int prot)
 {
     ASSERT(range.is_valid());
     size_t end_in_vmobject = offset_in_vmobject + range.size();
@@ -224,21 +224,17 @@ Region* Process::allocate_region_with_vmobject(const Range& range, NonnullRefPtr
         return nullptr;
     }
     offset_in_vmobject &= PAGE_MASK;
-    Region* region;
-    if (user_accessible)
-        region = &add_region(Region::create_user_accessible(range, move(vmobject), offset_in_vmobject, name, prot_to_region_access_flags(prot)));
-    else
-        region = &add_region(Region::create_kernel_only(range, move(vmobject), offset_in_vmobject, name, prot_to_region_access_flags(prot)));
-    region->map(page_directory());
-    return region;
+    auto& region = add_region(Region::create_user_accessible(range, move(vmobject), offset_in_vmobject, name, prot_to_region_access_flags(prot)));
+    region.map(page_directory());
+    return &region;
 }
 
-Region* Process::allocate_region_with_vmobject(VirtualAddress vaddr, size_t size, NonnullRefPtr<VMObject> vmobject, size_t offset_in_vmobject, const String& name, int prot, bool user_accessible)
+Region* Process::allocate_region_with_vmobject(VirtualAddress vaddr, size_t size, NonnullRefPtr<VMObject> vmobject, size_t offset_in_vmobject, const String& name, int prot)
 {
     auto range = allocate_range(vaddr, size);
     if (!range.is_valid())
         return nullptr;
-    return allocate_region_with_vmobject(range, move(vmobject), offset_in_vmobject, name, prot, user_accessible);
+    return allocate_region_with_vmobject(range, move(vmobject), offset_in_vmobject, name, prot);
 }
 
 bool Process::deallocate_region(Region& region)
diff --git a/Kernel/Process.h b/Kernel/Process.h
index 66424c9c50f1..3aa698cf8ec3 100644
--- a/Kernel/Process.h
+++ b/Kernel/Process.h
@@ -366,9 +366,9 @@ class Process : public InlineLinkedListNode<Process> {
 
     bool is_superuser() const { return m_euid == 0; }
 
-    Region* allocate_region_with_vmobject(VirtualAddress, size_t, NonnullRefPtr<VMObject>, size_t offset_in_vmobject, const String& name, int prot, bool user_accessible = true);
+    Region* allocate_region_with_vmobject(VirtualAddress, size_t, NonnullRefPtr<VMObject>, size_t offset_in_vmobject, const String& name, int prot);
     Region* allocate_region(VirtualAddress, size_t, const String& name, int prot = PROT_READ | PROT_WRITE, bool commit = true);
-    Region* allocate_region_with_vmobject(const Range&, NonnullRefPtr<VMObject>, size_t offset_in_vmobject, const String& name, int prot, bool user_accessible = true);
+    Region* allocate_region_with_vmobject(const Range&, NonnullRefPtr<VMObject>, size_t offset_in_vmobject, const String& name, int prot);
     Region* allocate_region(const Range&, const String& name, int prot = PROT_READ | PROT_WRITE, bool commit = true);
     bool deallocate_region(Region& region);"
9724797da7816525e71f89e464752aeaa72f48be,2023-01-01 16:33:29,Victor Song,utilities: Print arbitrary bytes in `ls`,False,Print arbitrary bytes in `ls`,utilities,"diff --git a/Userland/Utilities/ls.cpp b/Userland/Utilities/ls.cpp
index 065466e43353..1779e4c4f5ba 100644
--- a/Userland/Utilities/ls.cpp
+++ b/Userland/Utilities/ls.cpp
@@ -207,12 +207,12 @@ static int print_escaped(StringView name)
         return utf8_name.length();
     }
 
-    for (int i = 0; name[i] != '\0'; i++) {
-        if (isprint(name[i])) {
-            putchar(name[i]);
+    for (auto c : name) {
+        if (isprint(c)) {
+            putchar(c);
             printed++;
         } else {
-            printed += printf(""\\%03d"", name[i]);
+            printed += printf(""\\%03d"", c);
         }
     }"
42eb06f0459865ca9e6316012ab7d29cde6bdc05,2021-07-14 02:50:09,Itamar,libcpp: Don't store entire ASTNode vector in each parser state,False,Don't store entire ASTNode vector in each parser state,libcpp,"diff --git a/Userland/Libraries/LibCpp/Parser.cpp b/Userland/Libraries/LibCpp/Parser.cpp
index 3155d20b31e6..2ddf77e55a53 100644
--- a/Userland/Libraries/LibCpp/Parser.cpp
+++ b/Userland/Libraries/LibCpp/Parser.cpp
@@ -851,6 +851,7 @@ Optional<Token> Parser::peek(Token::Type type) const
 void Parser::save_state()
 {
     m_saved_states.append(m_state);
+    m_state.state_nodes.clear();
 }
 
 void Parser::load_state()
@@ -897,7 +898,7 @@ void Parser::error(StringView message)
 
     if (!m_saved_states.is_empty())
         return;
-    
+
     if (message.is_null() || message.is_empty())
         message = ""<empty>"";
     String formatted_message;
@@ -941,23 +942,19 @@ Position Parser::position() const
     return peek().start();
 }
 
-RefPtr<ASTNode> Parser::eof_node() const
-{
-    VERIFY(m_tokens.size());
-    return node_at(m_tokens.last().end());
-}
-
 RefPtr<ASTNode> Parser::node_at(Position pos) const
 {
+    VERIFY(m_saved_states.is_empty());
     auto index = index_of_node_at(pos);
     if (!index.has_value())
         return nullptr;
-    return m_state.nodes[index.value()];
+    return m_nodes[index.value()];
 }
 
 Optional<size_t> Parser::index_of_node_at(Position pos) const
 {
     VERIFY(!m_tokens.is_empty());
+    VERIFY(m_saved_states.is_empty());
     Optional<size_t> match_node_index;
 
     auto node_span = [](const ASTNode& node) {
@@ -966,12 +963,12 @@ Optional<size_t> Parser::index_of_node_at(Position pos) const
         return Position { node.end().line - node.start().line, node.start().line != node.end().line ? 0 : node.end().column - node.start().column };
     };
 
-    for (size_t node_index = 0; node_index < m_state.nodes.size(); ++node_index) {
-        auto& node = m_state.nodes[node_index];
+    for (size_t node_index = 0; node_index < m_nodes.size(); ++node_index) {
+        auto& node = m_nodes[node_index];
         if (node.start() > pos || node.end() < pos)
             continue;
 
-        if (!match_node_index.has_value() || (node_span(node) <= node_span(m_state.nodes[match_node_index.value()])))
+        if (!match_node_index.has_value() || (node_span(node) <= node_span(m_nodes[match_node_index.value()])))
             match_node_index = node_index;
     }
     return match_node_index;
diff --git a/Userland/Libraries/LibCpp/Parser.h b/Userland/Libraries/LibCpp/Parser.h
index b2a5721db537..76d80bdd7b75 100644
--- a/Userland/Libraries/LibCpp/Parser.h
+++ b/Userland/Libraries/LibCpp/Parser.h
@@ -24,7 +24,6 @@ class Parser final {
     NonnullRefPtr<TranslationUnit> parse();
     bool eof() const;
 
-    RefPtr<ASTNode> eof_node() const;
     RefPtr<ASTNode> node_at(Position) const;
     Optional<size_t> index_of_node_at(Position) const;
     Optional<Token> token_at(Position) const;
@@ -147,7 +146,7 @@ class Parser final {
 
     struct State {
         size_t token_index { 0 };
-        NonnullRefPtrVector<ASTNode> nodes;
+        NonnullRefPtrVector<ASTNode> state_nodes;
     };
 
     void error(StringView message = {});
@@ -157,9 +156,13 @@ class Parser final {
     create_ast_node(ASTNode& parent, const Position& start, Optional<Position> end, Args&&... args)
     {
         auto node = adopt_ref(*new T(&parent, start, end, m_filename, forward<Args>(args)...));
-        if (!parent.is_dummy_node()) {
-            m_state.nodes.append(node);
+
+        if (m_saved_states.is_empty()) {
+            m_nodes.append(node);
+        } else {
+            m_state.state_nodes.append(node);
         }
+
         return node;
     }
 
@@ -167,7 +170,7 @@ class Parser final {
     create_root_ast_node(const Position& start, Position end)
     {
         auto node = adopt_ref(*new TranslationUnit(nullptr, start, end, m_filename));
-        m_state.nodes.append(node);
+        m_nodes.append(node);
         m_root_node = node;
         return node;
     }
@@ -200,6 +203,7 @@ class Parser final {
     Vector<State> m_saved_states;
     RefPtr<TranslationUnit> m_root_node;
     Vector<String> m_errors;
+    NonnullRefPtrVector<ASTNode> m_nodes;
 
     Vector<TokenAndPreprocessorDefinition> m_replaced_preprocessor_tokens;
 };"
02b74e5a70e1eef2fe3123fe8aa157301424783a,2023-06-28 15:48:06,Andrew Kaster,ak: Re-enable consteval StringView literal workaround for oss-fuzz,False,Re-enable consteval StringView literal workaround for oss-fuzz,ak,"diff --git a/AK/StringView.h b/AK/StringView.h
index 77ce92a70b63..d86a42b5e695 100644
--- a/AK/StringView.h
+++ b/AK/StringView.h
@@ -374,7 +374,9 @@ struct CaseInsensitiveASCIIStringViewTraits : public Traits<StringView> {
 // FIXME: Remove this when clang on BSD distributions fully support consteval (specifically in the context of default parameter initialization).
 //        Note that this is fixed in clang-15, but is not yet picked up by all downstream distributions.
 //        See: https://github.com/llvm/llvm-project/issues/48230
-#if defined(AK_OS_BSD_GENERIC)
+//        Additionally, oss-fuzz currently ships an llvm-project commit that is a pre-release of 15.0.0.
+//        See: https://github.com/google/oss-fuzz/issues/9989
+#if defined(AK_OS_BSD_GENERIC) or defined(OSS_FUZZ)
 #    define AK_STRING_VIEW_LITERAL_CONSTEVAL constexpr
 #else
 #    define AK_STRING_VIEW_LITERAL_CONSTEVAL consteval"
1956c52c6866ea08bbae03f52c761f357e3ac931,2022-04-06 23:05:07,Andreas Kling,libweb: Remove unused HTML::parse_html_document(),False,Remove unused HTML::parse_html_document(),libweb,"diff --git a/Userland/Libraries/LibWeb/HTML/Parser/HTMLParser.cpp b/Userland/Libraries/LibWeb/HTML/Parser/HTMLParser.cpp
index 7e59679b0876..ea133bd721e3 100644
--- a/Userland/Libraries/LibWeb/HTML/Parser/HTMLParser.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Parser/HTMLParser.cpp
@@ -118,14 +118,6 @@ static bool is_html_integration_point(DOM::Element const& element)
     return false;
 }
 
-RefPtr<DOM::Document> parse_html_document(StringView data, const AK::URL& url, String const& encoding)
-{
-    auto document = DOM::Document::create(url);
-    auto parser = HTMLParser::create(document, data, encoding);
-    parser->run(url);
-    return document;
-}
-
 HTMLParser::HTMLParser(DOM::Document& document, StringView input, String const& encoding)
     : m_tokenizer(input, encoding)
     , m_document(document)
diff --git a/Userland/Libraries/LibWeb/HTML/Parser/HTMLParser.h b/Userland/Libraries/LibWeb/HTML/Parser/HTMLParser.h
index 81d0e46dd346..ba7fa4854ea9 100644
--- a/Userland/Libraries/LibWeb/HTML/Parser/HTMLParser.h
+++ b/Userland/Libraries/LibWeb/HTML/Parser/HTMLParser.h
@@ -39,8 +39,6 @@ namespace Web::HTML {
     __ENUMERATE_INSERTION_MODE(AfterAfterBody)  \
     __ENUMERATE_INSERTION_MODE(AfterAfterFrameset)
 
-RefPtr<DOM::Document> parse_html_document(StringView, const AK::URL&, String const& encoding);
-
 class HTMLParser : public RefCounted<HTMLParser> {
     friend class HTMLTokenizer;"
949ea9cb4adf9b53c8f351269464c794493f5a87,2021-07-08 13:41:00,Daniel Bertalan,kernel: Use range-for wherever possible,False,Use range-for wherever possible,kernel,"diff --git a/Kernel/Bus/PCI/Definitions.h b/Kernel/Bus/PCI/Definitions.h
index 08edcf6cc9ee..f2ec09dd0c1f 100644
--- a/Kernel/Bus/PCI/Definitions.h
+++ b/Kernel/Bus/PCI/Definitions.h
@@ -198,7 +198,7 @@ class PhysicalID {
         , m_capabilities(capabilities)
     {
         if constexpr (PCI_DEBUG) {
-            for (auto capability : capabilities)
+            for (const auto& capability : capabilities)
                 dbgln(""{} has capability {}"", address, capability.id());
         }
     }
diff --git a/Kernel/Bus/PCI/DeviceController.cpp b/Kernel/Bus/PCI/DeviceController.cpp
index 7dd396dc0b9d..8e0705b1e5b3 100644
--- a/Kernel/Bus/PCI/DeviceController.cpp
+++ b/Kernel/Bus/PCI/DeviceController.cpp
@@ -16,7 +16,7 @@ DeviceController::DeviceController(Address address)
 
 bool DeviceController::is_msi_capable() const
 {
-    for (auto capability : PCI::get_physical_id(pci_address()).capabilities()) {
+    for (const auto& capability : PCI::get_physical_id(pci_address()).capabilities()) {
         if (capability.id() == PCI_CAPABILITY_MSI)
             return true;
     }
@@ -24,7 +24,7 @@ bool DeviceController::is_msi_capable() const
 }
 bool DeviceController::is_msix_capable() const
 {
-    for (auto capability : PCI::get_physical_id(pci_address()).capabilities()) {
+    for (const auto& capability : PCI::get_physical_id(pci_address()).capabilities()) {
         if (capability.id() == PCI_CAPABILITY_MSIX)
             return true;
     }
diff --git a/Kernel/Graphics/VirtIOGPU/VirtIOGPU.h b/Kernel/Graphics/VirtIOGPU/VirtIOGPU.h
index e39225f0a2ae..71c6f914caa5 100644
--- a/Kernel/Graphics/VirtIOGPU/VirtIOGPU.h
+++ b/Kernel/Graphics/VirtIOGPU/VirtIOGPU.h
@@ -185,8 +185,7 @@ class VirtIOGPU final
     template<typename F>
     IterationDecision for_each_framebuffer(F f)
     {
-        for (size_t i = 0; i < VIRTIO_GPU_MAX_SCANOUTS; i++) {
-            auto& scanout = m_scanouts[i];
+        for (auto& scanout : m_scanouts) {
             if (!scanout.framebuffer)
                 continue;
             IterationDecision decision = f(*scanout.framebuffer, *scanout.console);"
88a3267e469bae52634cd787940ed6b26ca82ff3,2021-03-17 02:42:56,Linus Groh,libjs: Replace global_object.global_object() with just global_object,False,Replace global_object.global_object() with just global_object,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/Value.cpp b/Userland/Libraries/LibJS/Runtime/Value.cpp
index 328d53c91456..a3b3d6309cbe 100644
--- a/Userland/Libraries/LibJS/Runtime/Value.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Value.cpp
@@ -638,29 +638,29 @@ Value less_than_equals(GlobalObject& global_object, Value lhs, Value rhs)
 
 Value bitwise_and(GlobalObject& global_object, Value lhs, Value rhs)
 {
-    auto lhs_numeric = lhs.to_numeric(global_object.global_object());
+    auto lhs_numeric = lhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
-    auto rhs_numeric = rhs.to_numeric(global_object.global_object());
+    auto rhs_numeric = rhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
     if (both_number(lhs_numeric, rhs_numeric)) {
         if (!lhs_numeric.is_finite_number() || !rhs_numeric.is_finite_number())
             return Value(0);
-        return Value(lhs_numeric.to_i32(global_object.global_object()) & rhs_numeric.to_i32(global_object.global_object()));
+        return Value(lhs_numeric.to_i32(global_object) & rhs_numeric.to_i32(global_object));
     }
     if (both_bigint(lhs_numeric, rhs_numeric))
         return js_bigint(global_object.heap(), lhs_numeric.as_bigint().big_integer().bitwise_and(rhs_numeric.as_bigint().big_integer()));
-    global_object.vm().throw_exception<TypeError>(global_object.global_object(), ErrorType::BigIntBadOperatorOtherType, ""bitwise AND"");
+    global_object.vm().throw_exception<TypeError>(global_object, ErrorType::BigIntBadOperatorOtherType, ""bitwise AND"");
     return {};
 }
 
 Value bitwise_or(GlobalObject& global_object, Value lhs, Value rhs)
 {
-    auto lhs_numeric = lhs.to_numeric(global_object.global_object());
+    auto lhs_numeric = lhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
-    auto rhs_numeric = rhs.to_numeric(global_object.global_object());
+    auto rhs_numeric = rhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
     if (both_number(lhs_numeric, rhs_numeric)) {
@@ -670,20 +670,20 @@ Value bitwise_or(GlobalObject& global_object, Value lhs, Value rhs)
             return rhs_numeric;
         if (!rhs_numeric.is_finite_number())
             return lhs_numeric;
-        return Value(lhs_numeric.to_i32(global_object.global_object()) | rhs_numeric.to_i32(global_object.global_object()));
+        return Value(lhs_numeric.to_i32(global_object) | rhs_numeric.to_i32(global_object));
     }
     if (both_bigint(lhs_numeric, rhs_numeric))
         return js_bigint(global_object.heap(), lhs_numeric.as_bigint().big_integer().bitwise_or(rhs_numeric.as_bigint().big_integer()));
-    global_object.vm().throw_exception<TypeError>(global_object.global_object(), ErrorType::BigIntBadOperatorOtherType, ""bitwise OR"");
+    global_object.vm().throw_exception<TypeError>(global_object, ErrorType::BigIntBadOperatorOtherType, ""bitwise OR"");
     return {};
 }
 
 Value bitwise_xor(GlobalObject& global_object, Value lhs, Value rhs)
 {
-    auto lhs_numeric = lhs.to_numeric(global_object.global_object());
+    auto lhs_numeric = lhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
-    auto rhs_numeric = rhs.to_numeric(global_object.global_object());
+    auto rhs_numeric = rhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
     if (both_number(lhs_numeric, rhs_numeric)) {
@@ -693,17 +693,17 @@ Value bitwise_xor(GlobalObject& global_object, Value lhs, Value rhs)
             return rhs_numeric;
         if (!rhs_numeric.is_finite_number())
             return lhs_numeric;
-        return Value(lhs_numeric.to_i32(global_object.global_object()) ^ rhs_numeric.to_i32(global_object.global_object()));
+        return Value(lhs_numeric.to_i32(global_object) ^ rhs_numeric.to_i32(global_object));
     }
     if (both_bigint(lhs_numeric, rhs_numeric))
         return js_bigint(global_object.heap(), lhs_numeric.as_bigint().big_integer().bitwise_xor(rhs_numeric.as_bigint().big_integer()));
-    global_object.vm().throw_exception<TypeError>(global_object.global_object(), ErrorType::BigIntBadOperatorOtherType, ""bitwise XOR"");
+    global_object.vm().throw_exception<TypeError>(global_object, ErrorType::BigIntBadOperatorOtherType, ""bitwise XOR"");
     return {};
 }
 
 Value bitwise_not(GlobalObject& global_object, Value lhs)
 {
-    auto lhs_numeric = lhs.to_numeric(global_object.global_object());
+    auto lhs_numeric = lhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
     if (lhs_numeric.is_number())
@@ -716,12 +716,12 @@ Value bitwise_not(GlobalObject& global_object, Value lhs)
 
 Value unary_plus(GlobalObject& global_object, Value lhs)
 {
-    return lhs.to_number(global_object.global_object());
+    return lhs.to_number(global_object);
 }
 
 Value unary_minus(GlobalObject& global_object, Value lhs)
 {
-    auto lhs_numeric = lhs.to_numeric(global_object.global_object());
+    auto lhs_numeric = lhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
     if (lhs_numeric.is_number()) {
@@ -740,10 +740,10 @@ Value left_shift(GlobalObject& global_object, Value lhs, Value rhs)
 {
     // 6.1.6.1.9 Number::leftShift
     // https://tc39.es/ecma262/#sec-numeric-types-number-leftShift
-    auto lhs_numeric = lhs.to_numeric(global_object.global_object());
+    auto lhs_numeric = lhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
-    auto rhs_numeric = rhs.to_numeric(global_object.global_object());
+    auto rhs_numeric = rhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
     if (both_number(lhs_numeric, rhs_numeric)) {
@@ -752,13 +752,13 @@ Value left_shift(GlobalObject& global_object, Value lhs, Value rhs)
         if (!rhs_numeric.is_finite_number())
             return lhs_numeric;
         // Ok, so this performs toNumber() again but that ""can't"" throw
-        auto lhs_i32 = lhs_numeric.to_i32(global_object.global_object());
-        auto rhs_u32 = rhs_numeric.to_u32(global_object.global_object());
+        auto lhs_i32 = lhs_numeric.to_i32(global_object);
+        auto rhs_u32 = rhs_numeric.to_u32(global_object);
         return Value(lhs_i32 << rhs_u32);
     }
     if (both_bigint(lhs_numeric, rhs_numeric))
         TODO();
-    global_object.vm().throw_exception<TypeError>(global_object.global_object(), ErrorType::BigIntBadOperatorOtherType, ""left-shift"");
+    global_object.vm().throw_exception<TypeError>(global_object, ErrorType::BigIntBadOperatorOtherType, ""left-shift"");
     return {};
 }
 
@@ -766,10 +766,10 @@ Value right_shift(GlobalObject& global_object, Value lhs, Value rhs)
 {
     // 6.1.6.1.11 Number::signedRightShift
     // https://tc39.es/ecma262/#sec-numeric-types-number-signedRightShift
-    auto lhs_numeric = lhs.to_numeric(global_object.global_object());
+    auto lhs_numeric = lhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
-    auto rhs_numeric = rhs.to_numeric(global_object.global_object());
+    auto rhs_numeric = rhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
     if (both_number(lhs_numeric, rhs_numeric)) {
@@ -778,13 +778,13 @@ Value right_shift(GlobalObject& global_object, Value lhs, Value rhs)
         if (!rhs_numeric.is_finite_number())
             return lhs_numeric;
         // Ok, so this performs toNumber() again but that ""can't"" throw
-        auto lhs_i32 = lhs_numeric.to_i32(global_object.global_object());
-        auto rhs_u32 = rhs_numeric.to_u32(global_object.global_object());
+        auto lhs_i32 = lhs_numeric.to_i32(global_object);
+        auto rhs_u32 = rhs_numeric.to_u32(global_object);
         return Value(lhs_i32 >> rhs_u32);
     }
     if (both_bigint(lhs_numeric, rhs_numeric))
         TODO();
-    global_object.vm().throw_exception<TypeError>(global_object.global_object(), ErrorType::BigIntBadOperatorOtherType, ""right-shift"");
+    global_object.vm().throw_exception<TypeError>(global_object, ErrorType::BigIntBadOperatorOtherType, ""right-shift"");
     return {};
 }
 
@@ -792,10 +792,10 @@ Value unsigned_right_shift(GlobalObject& global_object, Value lhs, Value rhs)
 {
     // 6.1.6.1.11 Number::unsignedRightShift
     // https://tc39.es/ecma262/#sec-numeric-types-number-unsignedRightShift
-    auto lhs_numeric = lhs.to_numeric(global_object.global_object());
+    auto lhs_numeric = lhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
-    auto rhs_numeric = rhs.to_numeric(global_object.global_object());
+    auto rhs_numeric = rhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
     if (both_number(lhs_numeric, rhs_numeric)) {
@@ -804,11 +804,11 @@ Value unsigned_right_shift(GlobalObject& global_object, Value lhs, Value rhs)
         if (!rhs_numeric.is_finite_number())
             return lhs_numeric;
         // Ok, so this performs toNumber() again but that ""can't"" throw
-        auto lhs_u32 = lhs_numeric.to_u32(global_object.global_object());
-        auto rhs_u32 = rhs_numeric.to_u32(global_object.global_object()) % 32;
+        auto lhs_u32 = lhs_numeric.to_u32(global_object);
+        auto rhs_u32 = rhs_numeric.to_u32(global_object) % 32;
         return Value(lhs_u32 >> rhs_u32);
     }
-    global_object.vm().throw_exception<TypeError>(global_object.global_object(), ErrorType::BigIntBadOperator, ""unsigned right-shift"");
+    global_object.vm().throw_exception<TypeError>(global_object, ErrorType::BigIntBadOperator, ""unsigned right-shift"");
     return {};
 }
 
@@ -822,10 +822,10 @@ Value add(GlobalObject& global_object, Value lhs, Value rhs)
         return {};
 
     if (lhs_primitive.is_string() || rhs_primitive.is_string()) {
-        auto lhs_string = lhs_primitive.to_string(global_object.global_object());
+        auto lhs_string = lhs_primitive.to_string(global_object);
         if (global_object.vm().exception())
             return {};
-        auto rhs_string = rhs_primitive.to_string(global_object.global_object());
+        auto rhs_string = rhs_primitive.to_string(global_object);
         if (global_object.vm().exception())
             return {};
         StringBuilder builder(lhs_string.length() + rhs_string.length());
@@ -834,59 +834,59 @@ Value add(GlobalObject& global_object, Value lhs, Value rhs)
         return js_string(global_object.heap(), builder.to_string());
     }
 
-    auto lhs_numeric = lhs_primitive.to_numeric(global_object.global_object());
+    auto lhs_numeric = lhs_primitive.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
-    auto rhs_numeric = rhs_primitive.to_numeric(global_object.global_object());
+    auto rhs_numeric = rhs_primitive.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
     if (both_number(lhs_numeric, rhs_numeric))
         return Value(lhs_numeric.as_double() + rhs_numeric.as_double());
     if (both_bigint(lhs_numeric, rhs_numeric))
         return js_bigint(global_object.heap(), lhs_numeric.as_bigint().big_integer().plus(rhs_numeric.as_bigint().big_integer()));
-    global_object.vm().throw_exception<TypeError>(global_object.global_object(), ErrorType::BigIntBadOperatorOtherType, ""addition"");
+    global_object.vm().throw_exception<TypeError>(global_object, ErrorType::BigIntBadOperatorOtherType, ""addition"");
     return {};
 }
 
 Value sub(GlobalObject& global_object, Value lhs, Value rhs)
 {
-    auto lhs_numeric = lhs.to_numeric(global_object.global_object());
+    auto lhs_numeric = lhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
-    auto rhs_numeric = rhs.to_numeric(global_object.global_object());
+    auto rhs_numeric = rhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
     if (both_number(lhs_numeric, rhs_numeric))
         return Value(lhs_numeric.as_double() - rhs_numeric.as_double());
     if (both_bigint(lhs_numeric, rhs_numeric))
         return js_bigint(global_object.heap(), lhs_numeric.as_bigint().big_integer().minus(rhs_numeric.as_bigint().big_integer()));
-    global_object.vm().throw_exception<TypeError>(global_object.global_object(), ErrorType::BigIntBadOperatorOtherType, ""subtraction"");
+    global_object.vm().throw_exception<TypeError>(global_object, ErrorType::BigIntBadOperatorOtherType, ""subtraction"");
     return {};
 }
 
 Value mul(GlobalObject& global_object, Value lhs, Value rhs)
 {
-    auto lhs_numeric = lhs.to_numeric(global_object.global_object());
+    auto lhs_numeric = lhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
-    auto rhs_numeric = rhs.to_numeric(global_object.global_object());
+    auto rhs_numeric = rhs.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
     if (both_number(lhs_numeric, rhs_numeric))
         return Value(lhs_numeric.as_double() * rhs_numeric.as_double());
     if (both_bigint(lhs_numeric, rhs_numeric))
         return js_bigint(global_object.heap(), lhs_numeric.as_bigint().big_integer().multiplied_by(rhs_numeric.as_bigint().big_integer()));
-    global_object.vm().throw_exception<TypeError>(global_object.global_object(), ErrorType::BigIntBadOperatorOtherType, ""multiplication"");
+    global_object.vm().throw_exception<TypeError>(global_object, ErrorType::BigIntBadOperatorOtherType, ""multiplication"");
     return {};
 }
 
 Value div(GlobalObject& global_object, Value lhs, Value rhs)
 {
     auto& vm = global_object.vm();
-    auto lhs_numeric = lhs.to_numeric(global_object.global_object());
+    auto lhs_numeric = lhs.to_numeric(global_object);
     if (vm.exception())
         return {};
-    auto rhs_numeric = rhs.to_numeric(global_object.global_object());
+    auto rhs_numeric = rhs.to_numeric(global_object);
     if (vm.exception())
         return {};
     if (both_number(lhs_numeric, rhs_numeric))
@@ -898,17 +898,17 @@ Value div(GlobalObject& global_object, Value lhs, Value rhs)
         }
         return js_bigint(global_object.heap(), lhs_numeric.as_bigint().big_integer().divided_by(rhs_numeric.as_bigint().big_integer()).quotient);
     }
-    vm.throw_exception<TypeError>(global_object.global_object(), ErrorType::BigIntBadOperatorOtherType, ""division"");
+    vm.throw_exception<TypeError>(global_object, ErrorType::BigIntBadOperatorOtherType, ""division"");
     return {};
 }
 
 Value mod(GlobalObject& global_object, Value lhs, Value rhs)
 {
     auto& vm = global_object.vm();
-    auto lhs_numeric = lhs.to_numeric(global_object.global_object());
+    auto lhs_numeric = lhs.to_numeric(global_object);
     if (vm.exception())
         return {};
-    auto rhs_numeric = rhs.to_numeric(global_object.global_object());
+    auto rhs_numeric = rhs.to_numeric(global_object);
     if (vm.exception())
         return {};
     if (both_number(lhs_numeric, rhs_numeric)) {
@@ -926,7 +926,7 @@ Value mod(GlobalObject& global_object, Value lhs, Value rhs)
         }
         return js_bigint(global_object.heap(), lhs_numeric.as_bigint().big_integer().divided_by(rhs_numeric.as_bigint().big_integer()).remainder);
     }
-    vm.throw_exception<TypeError>(global_object.global_object(), ErrorType::BigIntBadOperatorOtherType, ""modulo"");
+    vm.throw_exception<TypeError>(global_object, ErrorType::BigIntBadOperatorOtherType, ""modulo"");
     return {};
 }
 
@@ -955,10 +955,10 @@ Value exp(GlobalObject& global_object, Value lhs, Value rhs)
 Value in(GlobalObject& global_object, Value lhs, Value rhs)
 {
     if (!rhs.is_object()) {
-        global_object.vm().throw_exception<TypeError>(global_object.global_object(), ErrorType::InOperatorWithObject);
+        global_object.vm().throw_exception<TypeError>(global_object, ErrorType::InOperatorWithObject);
         return {};
     }
-    auto lhs_string = lhs.to_string(global_object.global_object());
+    auto lhs_string = lhs.to_string(global_object);
     if (global_object.vm().exception())
         return {};
     return Value(rhs.as_object().has_property(lhs_string));
@@ -1115,10 +1115,10 @@ bool abstract_eq(GlobalObject& global_object, Value lhs, Value rhs)
         return true;
 
     if (lhs.is_number() && rhs.is_string())
-        return abstract_eq(global_object, lhs, rhs.to_number(global_object.global_object()));
+        return abstract_eq(global_object, lhs, rhs.to_number(global_object));
 
     if (lhs.is_string() && rhs.is_number())
-        return abstract_eq(global_object, lhs.to_number(global_object.global_object()), rhs);
+        return abstract_eq(global_object, lhs.to_number(global_object), rhs);
 
     if (lhs.is_bigint() && rhs.is_string()) {
         auto& rhs_string = rhs.as_string().string();
@@ -1131,10 +1131,10 @@ bool abstract_eq(GlobalObject& global_object, Value lhs, Value rhs)
         return abstract_eq(global_object, rhs, lhs);
 
     if (lhs.is_boolean())
-        return abstract_eq(global_object, lhs.to_number(global_object.global_object()), rhs);
+        return abstract_eq(global_object, lhs.to_number(global_object), rhs);
 
     if (rhs.is_boolean())
-        return abstract_eq(global_object, lhs, rhs.to_number(global_object.global_object()));
+        return abstract_eq(global_object, lhs, rhs.to_number(global_object));
 
     if ((lhs.is_string() || lhs.is_number() || lhs.is_bigint() || lhs.is_symbol()) && rhs.is_object()) {
         auto rhs_primitive = rhs.to_primitive(global_object);
@@ -1156,9 +1156,9 @@ bool abstract_eq(GlobalObject& global_object, Value lhs, Value rhs)
         if ((lhs.is_number() && !lhs.is_integer()) || (rhs.is_number() && !rhs.is_integer()))
             return false;
         if (lhs.is_number())
-            return Crypto::SignedBigInteger { lhs.to_i32(global_object.global_object()) } == rhs.as_bigint().big_integer();
+            return Crypto::SignedBigInteger { lhs.to_i32(global_object) } == rhs.as_bigint().big_integer();
         else
-            return Crypto::SignedBigInteger { rhs.to_i32(global_object.global_object()) } == lhs.as_bigint().big_integer();
+            return Crypto::SignedBigInteger { rhs.to_i32(global_object) } == lhs.as_bigint().big_integer();
     }
 
     return false;
@@ -1230,10 +1230,10 @@ TriState abstract_relation(GlobalObject& global_object, bool left_first, Value l
             return TriState::False;
     }
 
-    auto x_numeric = x_primitive.to_numeric(global_object.global_object());
+    auto x_numeric = x_primitive.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
-    auto y_numeric = y_primitive.to_numeric(global_object.global_object());
+    auto y_numeric = y_primitive.to_numeric(global_object);
     if (global_object.vm().exception())
         return {};
 
@@ -1265,12 +1265,12 @@ TriState abstract_relation(GlobalObject& global_object, bool left_first, Value l
     bool x_lower_than_y;
     if (x_numeric.is_number()) {
         x_lower_than_y = x_numeric.is_integer()
-            ? Crypto::SignedBigInteger { x_numeric.to_i32(global_object.global_object()) } < y_numeric.as_bigint().big_integer()
-            : (Crypto::SignedBigInteger { x_numeric.to_i32(global_object.global_object()) } < y_numeric.as_bigint().big_integer() || Crypto::SignedBigInteger { x_numeric.to_i32(global_object.global_object()) + 1 } < y_numeric.as_bigint().big_integer());
+            ? Crypto::SignedBigInteger { x_numeric.to_i32(global_object) } < y_numeric.as_bigint().big_integer()
+            : (Crypto::SignedBigInteger { x_numeric.to_i32(global_object) } < y_numeric.as_bigint().big_integer() || Crypto::SignedBigInteger { x_numeric.to_i32(global_object) + 1 } < y_numeric.as_bigint().big_integer());
     } else {
         x_lower_than_y = y_numeric.is_integer()
-            ? x_numeric.as_bigint().big_integer() < Crypto::SignedBigInteger { y_numeric.to_i32(global_object.global_object()) }
-            : (x_numeric.as_bigint().big_integer() < Crypto::SignedBigInteger { y_numeric.to_i32(global_object.global_object()) } || x_numeric.as_bigint().big_integer() < Crypto::SignedBigInteger { y_numeric.to_i32(global_object.global_object()) + 1 });
+            ? x_numeric.as_bigint().big_integer() < Crypto::SignedBigInteger { y_numeric.to_i32(global_object) }
+            : (x_numeric.as_bigint().big_integer() < Crypto::SignedBigInteger { y_numeric.to_i32(global_object) } || x_numeric.as_bigint().big_integer() < Crypto::SignedBigInteger { y_numeric.to_i32(global_object) + 1 });
     }
     if (x_lower_than_y)
         return TriState::True;"
dee02ab30a4a950ab5ea8e1ab29e274057696d3f,2021-11-24 23:37:48,Vyacheslav Pukhanov,webcontent: Support inspection of DOM in nested browsing contexts,False,Support inspection of DOM in nested browsing contexts,webcontent,"diff --git a/Userland/Services/WebContent/ClientConnection.cpp b/Userland/Services/WebContent/ClientConnection.cpp
index 8ec0806c7741..982e54700a20 100644
--- a/Userland/Services/WebContent/ClientConnection.cpp
+++ b/Userland/Services/WebContent/ClientConnection.cpp
@@ -235,36 +235,42 @@ void ClientConnection::inspect_dom_tree()
 
 Messages::WebContentServer::InspectDomNodeResponse ClientConnection::inspect_dom_node(i32 node_id)
 {
-    if (auto* doc = page().top_level_browsing_context().active_document()) {
-        Web::DOM::Node* node = Web::DOM::Node::from_id(node_id);
-        if (!node || (&node->document() != doc)) {
-            doc->set_inspected_node(nullptr);
-            return { false, """", """" };
+    auto& top_context = page().top_level_browsing_context();
+
+    top_context.for_each_in_inclusive_subtree([&](auto& ctx) {
+        if (ctx.active_document() != nullptr) {
+            ctx.active_document()->set_inspected_node(nullptr);
         }
+        return IterationDecision::Continue;
+    });
 
-        doc->set_inspected_node(node);
+    Web::DOM::Node* node = Web::DOM::Node::from_id(node_id);
+    if (!node) {
+        return { false, """", """" };
+    }
 
-        if (node->is_element()) {
-            auto& element = verify_cast<Web::DOM::Element>(*node);
-            if (!element.specified_css_values())
-                return { false, """", """" };
+    node->document().set_inspected_node(node);
 
-            auto serialize_json = [](Web::CSS::StyleProperties const& properties) -> String {
-                StringBuilder builder;
+    if (node->is_element()) {
+        auto& element = verify_cast<Web::DOM::Element>(*node);
+        if (!element.specified_css_values())
+            return { false, """", """" };
 
-                JsonObjectSerializer serializer(builder);
-                properties.for_each_property([&](auto property_id, auto& value) {
-                    serializer.add(Web::CSS::string_from_property_id(property_id), value.to_string());
-                });
-                serializer.finish();
+        auto serialize_json = [](Web::CSS::StyleProperties const& properties) -> String {
+            StringBuilder builder;
 
-                return builder.to_string();
-            };
+            JsonObjectSerializer serializer(builder);
+            properties.for_each_property([&](auto property_id, auto& value) {
+                serializer.add(Web::CSS::string_from_property_id(property_id), value.to_string());
+            });
+            serializer.finish();
 
-            String specified_values_json = serialize_json(*element.specified_css_values());
-            String computed_values_json = serialize_json(element.computed_style());
-            return { true, specified_values_json, computed_values_json };
-        }
+            return builder.to_string();
+        };
+
+        String specified_values_json = serialize_json(*element.specified_css_values());
+        String computed_values_json = serialize_json(element.computed_style());
+        return { true, specified_values_json, computed_values_json };
     }
 
     return { false, """", """" };"
556374a904722eca9f068bdc8ac8fdc32b0ea361,2021-09-01 18:44:47,Timothy Flynn,libunicode: Substitute Unicode locale aliases during canonicalization,False,Substitute Unicode locale aliases during canonicalization,libunicode,"diff --git a/Tests/LibUnicode/TestUnicodeLocale.cpp b/Tests/LibUnicode/TestUnicodeLocale.cpp
index 52dca559152e..45cd4170f6ef 100644
--- a/Tests/LibUnicode/TestUnicodeLocale.cpp
+++ b/Tests/LibUnicode/TestUnicodeLocale.cpp
@@ -334,4 +334,40 @@ TEST_CASE(canonicalize_unicode_locale_id)
     test(""EN-Z-BBB-U-AA-T-EN-0-AAA""sv, ""en-0-aaa-t-en-u-aa-z-bbb""sv);
     test(""en-z-bbb-u-aa-t-en-0-aaa-x-ccc""sv, ""en-0-aaa-t-en-u-aa-z-bbb-x-ccc""sv);
     test(""EN-Z-BBB-U-AA-T-EN-0-AAA-X-CCC""sv, ""en-0-aaa-t-en-u-aa-z-bbb-x-ccc""sv);
+
+    // Language subtag aliases.
+    test(""sh""sv, ""sr-Latn""sv);
+    test(""SH""sv, ""sr-Latn""sv);
+    test(""sh-cyrl""sv, ""sr-Cyrl""sv);
+    test(""SH-CYRL""sv, ""sr-Cyrl""sv);
+    test(""cnr""sv, ""sr-ME""sv);
+    test(""CNR""sv, ""sr-ME""sv);
+    test(""cnr-ba""sv, ""sr-BA""sv);
+    test(""CNR-BA""sv, ""sr-BA""sv);
+
+    // Territory subtag aliases.
+    test(""ru-su""sv, ""ru-RU""sv);
+    test(""RU-SU""sv, ""ru-RU""sv);
+    test(""ru-810""sv, ""ru-RU""sv);
+    test(""RU-810""sv, ""ru-RU""sv);
+    test(""en-su""sv, ""en-RU""sv);
+    test(""EN-SU""sv, ""en-RU""sv);
+    test(""en-810""sv, ""en-RU""sv);
+    test(""EN-810""sv, ""en-RU""sv);
+
+    // Script subtag aliases.
+    test(""en-qaai""sv, ""en-Zinh""sv);
+    test(""EN-QAAI""sv, ""en-Zinh""sv);
+
+    // Variant subtag aliases.
+    test(""en-polytoni""sv, ""en-polyton""sv);
+    test(""EN-POLYTONI""sv, ""en-polyton""sv);
+
+    // Subdivision subtag aliases.
+    test(""en-u-sd-cn11""sv, ""en-u-sd-cnbj""sv);
+    test(""EN-U-SD-CN11""sv, ""en-u-sd-cnbj""sv);
+    test(""en-u-rg-cn12""sv, ""en-u-rg-cntj""sv);
+    test(""EN-U-RG-CN12""sv, ""en-u-rg-cntj""sv);
+    test(""en-u-aa-cn11""sv, ""en-u-aa-cn11""sv);
+    test(""EN-U-AA-CN11""sv, ""en-u-aa-cn11""sv);
 }
diff --git a/Userland/Libraries/LibUnicode/Locale.cpp b/Userland/Libraries/LibUnicode/Locale.cpp
index a5d5ccbfafc1..6cbeb241b1e4 100644
--- a/Userland/Libraries/LibUnicode/Locale.cpp
+++ b/Userland/Libraries/LibUnicode/Locale.cpp
@@ -480,100 +480,191 @@ Optional<LocaleID> parse_unicode_locale_id(StringView locale)
     return locale_id;
 }
 
-Optional<String> canonicalize_unicode_locale_id(LocaleID& locale_id)
+static void transform_unicode_locale_id_to_canonical_syntax(LocaleID& locale_id)
 {
-    // https://unicode.org/reports/tr35/#Canonical_Unicode_Locale_Identifiers
-    StringBuilder builder;
+    auto canonicalize_language = [](LanguageID& language_id, bool force_lowercase) {
+        language_id.language = language_id.language->to_lowercase();
+        if (language_id.script.has_value())
+            language_id.script = language_id.script->to_titlecase();
+        if (language_id.region.has_value())
+            language_id.region = language_id.region->to_uppercase();
+        for (auto& variant : language_id.variants)
+            variant = variant.to_lowercase();
+
+        if (auto alias = resolve_language_alias(*language_id.language); alias.has_value()) {
+            auto language_alias = parse_unicode_language_id(*alias);
+            VERIFY(language_alias.has_value());
+
+            language_id.language = move(language_alias->language);
+            if (!language_id.script.has_value() && language_alias->script.has_value())
+                language_id.script = move(language_alias->script);
+            if (!language_id.region.has_value() && language_alias->region.has_value())
+                language_id.region = move(language_alias->region);
+            if (language_id.variants.is_empty() && !language_alias->variants.is_empty())
+                language_id.variants = move(language_alias->variants);
+        }
 
-    enum class Case {
-        Upper,
-        Lower,
-        Title,
-    };
+        if (language_id.script.has_value()) {
+            if (auto alias = resolve_script_tag_alias(*language_id.script); alias.has_value())
+                language_id.script = move(*alias);
+        }
 
-    auto append_sep_and_string = [&](Optional<String> const& string, Case case_ = Case::Lower) {
-        if (!string.has_value())
-            return;
-        switch (case_) {
-        case Case::Upper:
-            builder.appendff(""-{}"", string->to_uppercase());
-            break;
-        case Case::Lower:
-            builder.appendff(""-{}"", string->to_lowercase());
-            break;
-        case Case::Title:
-            builder.appendff(""-{}"", string->to_titlecase());
-            break;
+        if (language_id.region.has_value()) {
+            if (auto alias = resolve_territory_alias(*language_id.region); alias.has_value()) {
+                auto aliases = alias->split_view(' ');
+
+                // FIXME: Territory subtag aliases should also consult the CLDR likelySubtags.json file.
+                //        For now, implement the spec's recommendation of using just the first alias.
+                language_id.region = aliases[0].to_string();
+            }
         }
-    };
 
-    if (!locale_id.language_id.language.has_value())
-        return {};
+        quick_sort(language_id.variants);
 
-    builder.append(locale_id.language_id.language->to_lowercase());
-    append_sep_and_string(locale_id.language_id.script, Case::Title);
-    append_sep_and_string(locale_id.language_id.region, Case::Upper);
+        for (auto& variant : language_id.variants) {
+            variant = variant.to_lowercase();
+            if (auto alias = resolve_variant_alias(variant); alias.has_value())
+                variant = move(*alias);
+        }
 
-    quick_sort(locale_id.language_id.variants);
-    for (auto const& variant : locale_id.language_id.variants)
-        append_sep_and_string(variant);
+        if (force_lowercase) {
+            if (language_id.script.has_value())
+                language_id.script = language_id.script->to_lowercase();
+            if (language_id.region.has_value())
+                language_id.region = language_id.region->to_lowercase();
+        }
+    };
 
-    quick_sort(locale_id.extensions, [](auto const& left, auto const& right) {
-        auto key = [](auto const& extension) {
-            return extension.visit(
-                [](LocaleExtension const&) { return 'u'; },
-                [](TransformedExtension const&) { return 't'; },
-                [](OtherExtension const& ext) { return static_cast<char>(to_ascii_lowercase(ext.key)); });
-        };
+    auto canonicalize_key_value_list = [&](auto& key, auto& values, bool remove_true_values) {
+        key = key.to_lowercase();
 
-        return key(left) < key(right);
-    });
+        auto raw_values = move(values);
 
-    auto append_key_value_list = [&](auto const& key, auto const& values, bool remove_true_values) {
-        append_sep_and_string(key);
+        for (auto& value : raw_values) {
+            value = value.to_lowercase();
 
-        for (auto const& type : values) {
             // Note: The spec says to remove ""true"" type and tfield values but that is believed to be a bug in the spec
             // because, for tvalues, that would result in invalid syntax:
             //     https://unicode-org.atlassian.net/browse/CLDR-14318
             // This has also been noted by test262:
             //     https://github.com/tc39/test262/blob/18bb955771669541c56c28748603f6afdb2e25ff/test/intl402/Intl/getCanonicalLocales/transformed-ext-canonical.js
-            if (remove_true_values && type.equals_ignoring_case(""true""sv))
+            if (remove_true_values && (value == ""true""sv))
                 continue;
-            append_sep_and_string(type);
+
+            if (key.is_one_of(""sd""sv, ""rg""sv)) {
+                if (auto alias = resolve_subdivision_alias(value); alias.has_value()) {
+                    auto aliases = alias->split_view(' ');
+
+                    // FIXME: Subdivision subtags do not appear in the CLDR likelySubtags.json file.
+                    //        Implement the spec's recommendation of using just the first alias for now,
+                    //        but we should determine if there's anything else needed here.
+                    values.append(aliases[0].to_string());
+                    continue;
+                }
+            }
+
+            values.append(move(value));
         }
     };
 
+    canonicalize_language(locale_id.language_id, false);
+
+    quick_sort(locale_id.extensions, [](auto const& left, auto const& right) {
+        auto key = [](auto const& extension) {
+            return extension.visit(
+                [](LocaleExtension const&) { return 'u'; },
+                [](TransformedExtension const&) { return 't'; },
+                [](OtherExtension const& ext) { return static_cast<char>(to_ascii_lowercase(ext.key)); });
+        };
+
+        return key(left) < key(right);
+    });
+
     for (auto& extension : locale_id.extensions) {
         extension.visit(
             [&](LocaleExtension& ext) {
                 quick_sort(ext.attributes);
                 quick_sort(ext.keywords, [](auto const& a, auto const& b) { return a.key < b.key; });
+
+                for (auto& attribute : ext.attributes)
+                    attribute = attribute.to_lowercase();
+                for (auto& keyword : ext.keywords)
+                    canonicalize_key_value_list(keyword.key, keyword.types, true);
+            },
+            [&](TransformedExtension& ext) {
+                if (ext.language.has_value())
+                    canonicalize_language(*ext.language, true);
+
+                quick_sort(ext.fields, [](auto const& a, auto const& b) { return a.key < b.key; });
+
+                for (auto& field : ext.fields)
+                    canonicalize_key_value_list(field.key, field.values, false);
+            },
+            [&](OtherExtension& ext) {
+                ext.key = static_cast<char>(to_ascii_lowercase(ext.key));
+                for (auto& value : ext.values)
+                    value = value.to_lowercase();
+            });
+    }
+
+    for (auto& extension : locale_id.private_use_extensions)
+        extension = extension.to_lowercase();
+}
+
+Optional<String> canonicalize_unicode_locale_id(LocaleID& locale_id)
+{
+    // https://unicode.org/reports/tr35/#Canonical_Unicode_Locale_Identifiers
+    StringBuilder builder;
+
+    auto append_sep_and_string = [&](Optional<String> const& string) {
+        if (!string.has_value())
+            return;
+        builder.appendff(""-{}"", *string);
+    };
+
+    if (!locale_id.language_id.language.has_value())
+        return {};
+
+    transform_unicode_locale_id_to_canonical_syntax(locale_id);
+
+    builder.append(locale_id.language_id.language->to_lowercase());
+    append_sep_and_string(locale_id.language_id.script);
+    append_sep_and_string(locale_id.language_id.region);
+    for (auto const& variant : locale_id.language_id.variants)
+        append_sep_and_string(variant);
+
+    auto append_key_value_list = [&](auto const& key, auto& values) {
+        append_sep_and_string(key);
+
+        for (auto& value : values)
+            append_sep_and_string(value);
+    };
+
+    for (auto const& extension : locale_id.extensions) {
+        extension.visit(
+            [&](LocaleExtension const& ext) {
                 builder.append(""-u""sv);
 
                 for (auto const& attribute : ext.attributes)
                     append_sep_and_string(attribute);
                 for (auto const& keyword : ext.keywords)
-                    append_key_value_list(keyword.key, keyword.types, true);
+                    append_key_value_list(keyword.key, keyword.types);
             },
-            [&](TransformedExtension& ext) {
-                quick_sort(ext.fields, [](auto const& a, auto const& b) { return a.key < b.key; });
+            [&](TransformedExtension const& ext) {
                 builder.append(""-t""sv);
 
                 if (ext.language.has_value()) {
                     append_sep_and_string(ext.language->language);
                     append_sep_and_string(ext.language->script);
                     append_sep_and_string(ext.language->region);
-
-                    quick_sort(ext.language->variants);
                     for (auto const& variant : ext.language->variants)
                         append_sep_and_string(variant);
                 }
 
                 for (auto const& field : ext.fields)
-                    append_key_value_list(field.key, field.values, false);
+                    append_key_value_list(field.key, field.values);
             },
-            [&](OtherExtension& ext) {
+            [&](OtherExtension const& ext) {
                 builder.appendff(""-{:c}"", to_ascii_lowercase(ext.key));
                 for (auto const& value : ext.values)
                     append_sep_and_string(value);"
a819c359040f33745a58a45fe7cd201a553593a3,2020-07-21 22:51:52,Andreas Kling,userspaceemulator: Include flag taint state in dump output,False,Include flag taint state in dump output,userspaceemulator,"diff --git a/DevTools/UserspaceEmulator/SoftCPU.cpp b/DevTools/UserspaceEmulator/SoftCPU.cpp
index 4f9715452c3a..b5707ebb02df 100644
--- a/DevTools/UserspaceEmulator/SoftCPU.cpp
+++ b/DevTools/UserspaceEmulator/SoftCPU.cpp
@@ -94,7 +94,8 @@ void SoftCPU::dump() const
     printf(""ebp=%08x esp=%08x esi=%08x edi=%08x "", ebp().value(), esp().value(), esi().value(), edi().value());
     printf(""o=%u s=%u z=%u a=%u p=%u c=%u\n"", of(), sf(), zf(), af(), pf(), cf());
     printf(""#ax=%08x #bx=%08x #cx=%08x #dx=%08x "", eax().shadow(), ebx().shadow(), ecx().shadow(), edx().shadow());
-    printf(""#bp=%08x #sp=%08x #si=%08x #di=%08x\n"", ebp().shadow(), esp().shadow(), esi().shadow(), edi().shadow());
+    printf(""#bp=%08x #sp=%08x #si=%08x #di=%08x "", ebp().shadow(), esp().shadow(), esi().shadow(), edi().shadow());
+    printf(""#f=%u\n"", m_flags_tainted);
     fflush(stdout);
 }"
5ecc7e6a1c87ea33976b4c771af672bbe4042e58,2020-04-08 00:58:43,Linus Groh,libjs: Add Number.isSafeInteger(),False,Add Number.isSafeInteger(),libjs,"diff --git a/Libraries/LibJS/Runtime/NumberConstructor.cpp b/Libraries/LibJS/Runtime/NumberConstructor.cpp
index 21b6cc01ee5c..aeb0282514c4 100644
--- a/Libraries/LibJS/Runtime/NumberConstructor.cpp
+++ b/Libraries/LibJS/Runtime/NumberConstructor.cpp
@@ -30,15 +30,21 @@
 #include <LibJS/Runtime/NumberObject.h>
 #include <math.h>
 
+#define EPSILON pow(2, -52)
+#define MAX_SAFE_INTEGER pow(2, 53) - 1
+#define MIN_SAFE_INTEGER -(pow(2, 53) - 1)
+
 namespace JS {
 
 NumberConstructor::NumberConstructor()
 {
+    put_native_function(""isSafeInteger"", is_safe_integer, 1);
+
     put(""prototype"", interpreter().number_prototype());
     put(""length"", Value(1));
-    put(""EPSILON"", Value(pow(2, -52)));
-    put(""MAX_SAFE_INTEGER"", Value(pow(2, 53) - 1));
-    put(""MIN_SAFE_INTEGER"", Value(-(pow(2, 53) - 1)));
+    put(""EPSILON"", Value(EPSILON));
+    put(""MAX_SAFE_INTEGER"", Value(MAX_SAFE_INTEGER));
+    put(""MIN_SAFE_INTEGER"", Value(MIN_SAFE_INTEGER));
     put(""NEGATIVE_INFINITY"", Value(-js_infinity().as_double()));
     put(""POSITIVE_INFINITY"", js_infinity());
     put(""NaN"", js_nan());
@@ -65,4 +71,12 @@ Value NumberConstructor::construct(Interpreter& interpreter)
     return Value(interpreter.heap().allocate<NumberObject>(number));
 }
 
+Value NumberConstructor::is_safe_integer(Interpreter& interpreter)
+{
+    if (!interpreter.argument(0).is_number())
+        return Value(false);
+    auto value = interpreter.argument(0).to_number().as_double();
+    return Value((int64_t)value == value && value >= MIN_SAFE_INTEGER && value <= MAX_SAFE_INTEGER);
+}
+
 }
diff --git a/Libraries/LibJS/Runtime/NumberConstructor.h b/Libraries/LibJS/Runtime/NumberConstructor.h
index 31bf3052a0b3..34d7b5d4ed57 100644
--- a/Libraries/LibJS/Runtime/NumberConstructor.h
+++ b/Libraries/LibJS/Runtime/NumberConstructor.h
@@ -41,6 +41,8 @@ class NumberConstructor final : public NativeFunction {
 private:
     virtual bool has_constructor() const override { return true; }
     virtual const char* class_name() const override { return ""NumberConstructor""; }
+
+    static Value is_safe_integer(Interpreter&);
 };
 
 }
diff --git a/Libraries/LibJS/Tests/Number.isSafeInteger.js b/Libraries/LibJS/Tests/Number.isSafeInteger.js
new file mode 100644
index 000000000000..ee7e2308e7ad
--- /dev/null
+++ b/Libraries/LibJS/Tests/Number.isSafeInteger.js
@@ -0,0 +1,26 @@
+try {
+    assert(Number.isSafeInteger.length === 1);
+    assert(Number.isSafeInteger(0) === true);
+    assert(Number.isSafeInteger(1) === true);
+    assert(Number.isSafeInteger(2.0) === true);
+    assert(Number.isSafeInteger(42) === true);
+    assert(Number.isSafeInteger(Number.MAX_SAFE_INTEGER) === true);
+    assert(Number.isSafeInteger(Number.MIN_SAFE_INTEGER) === true);
+    assert(Number.isSafeInteger() === false);
+    assert(Number.isSafeInteger(""1"") === false);
+    assert(Number.isSafeInteger(2.1) === false);
+    assert(Number.isSafeInteger(42.42) === false);
+    assert(Number.isSafeInteger("""") === false);
+    assert(Number.isSafeInteger([]) === false);
+    assert(Number.isSafeInteger(null) === false);
+    assert(Number.isSafeInteger(undefined) === false);
+    assert(Number.isSafeInteger(NaN) === false);
+    assert(Number.isSafeInteger(Infinity) === false);
+    assert(Number.isSafeInteger(-Infinity) === false);
+    assert(Number.isSafeInteger(Number.MAX_SAFE_INTEGER + 1) === false);
+    assert(Number.isSafeInteger(Number.MIN_SAFE_INTEGER - 1) === false);
+
+    console.log(""PASS"");
+} catch (e) {
+    console.log(""FAIL: "" + e.message);
+}"
fcced975099c8eabdc4f474c2b6c1bcc57cfc3f4,2023-09-06 23:11:16,Sergey Bugaev,lookupserver: Fix building on GNU Hurd,False,Fix building on GNU Hurd,lookupserver,"diff --git a/Userland/Services/LookupServer/MulticastDNS.h b/Userland/Services/LookupServer/MulticastDNS.h
index 8b59a2415a6b..9c712ba097e1 100644
--- a/Userland/Services/LookupServer/MulticastDNS.h
+++ b/Userland/Services/LookupServer/MulticastDNS.h
@@ -36,8 +36,11 @@ class MulticastDNS : public Core::UDPServer {
 
     Name m_hostname;
 
+    // https://github.com/llvm/llvm-project/issues/56685
+    // https://github.com/llvm/llvm-project/pull/65409
+    // clang-format off
     static constexpr sockaddr_in mdns_addr {
-#ifdef AK_OS_BSD_GENERIC
+#if defined(AK_OS_BSD_GENERIC) || defined(AK_OS_GNU_HURD)
         .sin_len = sizeof(struct sockaddr_in),
 #endif
         .sin_family = AF_INET,
@@ -47,6 +50,7 @@ class MulticastDNS : public Core::UDPServer {
         .sin_addr = { 0xfb0000e0 },
         .sin_zero = { 0 }
     };
+    // clang-format on
 };
 
 }"
37a04b739aec60344d7997523aebadaffdde2d88,2022-02-19 19:07:51,Linus Groh,kernel: Only do i8042 existence check via probing as a fallback,False,Only do i8042 existence check via probing as a fallback,kernel,"diff --git a/Kernel/Devices/HID/HIDManagement.cpp b/Kernel/Devices/HID/HIDManagement.cpp
index 873e5f807066..1d45324d0e36 100644
--- a/Kernel/Devices/HID/HIDManagement.cpp
+++ b/Kernel/Devices/HID/HIDManagement.cpp
@@ -107,12 +107,20 @@ UNMAP_AFTER_INIT ErrorOr<void> HIDManagement::enumerate()
     // set to emulate PS/2, we should not initialize the PS/2 controller.
     if (kernel_command_line().disable_ps2_controller())
         return {};
-    if (ACPI::Parser::the() && !ACPI::Parser::the()->have_8042())
-        return {};
     m_i8042_controller = I8042Controller::initialize();
 
+    // Note: If ACPI is disabled or doesn't indicate that we have an i8042, we
+    // still perform a manual existence check via probing, which is relevant on
+    // QEMU, for example. This probing check is known to not work on bare metal
+    // in all cases, so if we can get a 'yes' from ACPI, we skip it.
+    auto has_i8042_controller = false;
+    if (ACPI::Parser::the() && ACPI::Parser::the()->have_8042())
+        has_i8042_controller = true;
+    else if (m_i8042_controller->check_existence_via_probing({}))
+        has_i8042_controller = true;
+
     // Note: If we happen to not have i8042 just return ""gracefully"" for now.
-    if (!m_i8042_controller->check_existence({}))
+    if (!has_i8042_controller)
         return {};
     TRY(m_i8042_controller->detect_devices());
     if (m_i8042_controller->mouse())
diff --git a/Kernel/Devices/HID/I8042Controller.cpp b/Kernel/Devices/HID/I8042Controller.cpp
index a302449be0a7..a970d0312dc5 100644
--- a/Kernel/Devices/HID/I8042Controller.cpp
+++ b/Kernel/Devices/HID/I8042Controller.cpp
@@ -31,7 +31,7 @@ UNMAP_AFTER_INIT I8042Controller::I8042Controller()
 {
 }
 
-UNMAP_AFTER_INIT bool I8042Controller::check_existence(Badge<HIDManagement>)
+UNMAP_AFTER_INIT bool I8042Controller::check_existence_via_probing(Badge<HIDManagement>)
 {
     {
         SpinlockLocker lock(m_lock);
diff --git a/Kernel/Devices/HID/I8042Controller.h b/Kernel/Devices/HID/I8042Controller.h
index 98b85a9e85ac..f6d250b7b1bb 100644
--- a/Kernel/Devices/HID/I8042Controller.h
+++ b/Kernel/Devices/HID/I8042Controller.h
@@ -143,7 +143,7 @@ class I8042Controller : public RefCounted<I8042Controller> {
     RefPtr<KeyboardDevice> keyboard() const;
 
     // Note: This function exists only for the initialization process of the controller
-    bool check_existence(Badge<HIDManagement>);
+    bool check_existence_via_probing(Badge<HIDManagement>);
 
 private:
     I8042Controller();"
b0844112589798615721555a7099a5d2e255074d,2020-08-29 04:34:22,Andreas Kling,"libgui: Make Del/Backspace clear cell w/ ""any key pressed"" edit trigger",False,"Make Del/Backspace clear cell w/ ""any key pressed"" edit trigger",libgui,"diff --git a/Libraries/LibGUI/TableView.cpp b/Libraries/LibGUI/TableView.cpp
index ba70c642596e..02c855c92209 100644
--- a/Libraries/LibGUI/TableView.cpp
+++ b/Libraries/LibGUI/TableView.cpp
@@ -186,8 +186,12 @@ void TableView::keydown_event(KeyEvent& event)
 
     if (is_editable() && edit_triggers() & EditTrigger::AnyKeyPressed && !event.text().is_empty()) {
         begin_editing(cursor_index());
-        if (m_editing_delegate)
-            m_editing_delegate->set_value(event.text());
+        if (m_editing_delegate) {
+            if (event.key() == KeyCode::Key_Delete || event.key() == KeyCode::Key_Backspace)
+                m_editing_delegate->set_value(String::empty());
+            else
+                m_editing_delegate->set_value(event.text());
+        }
     }
 }"
8feaecd5c8d02a2fdb989a9a9671e008d1c3a7de,2024-06-14 11:28:55,Aliaksandr Kalenik,"libweb: Create BlockContainer layout node for `<input type=""button"">`",False,"Create BlockContainer layout node for `<input type=""button"">`",libweb,"diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/Layout/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWeb/Layout/BUILD.gn
index ca29ca8ef3da..0d3283e03213 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/Layout/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/Layout/BUILD.gn
@@ -12,7 +12,6 @@ source_set(""Layout"") {
     ""Box.cpp"",
     ""BoxModelMetrics.cpp"",
     ""BreakNode.cpp"",
-    ""ButtonBox.cpp"",
     ""CanvasBox.cpp"",
     ""CheckBox.cpp"",
     ""FlexFormattingContext.cpp"",
diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/Painting/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWeb/Painting/BUILD.gn
index b8fe5999df12..16f953bd6cbb 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/Painting/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/Painting/BUILD.gn
@@ -12,7 +12,6 @@ source_set(""Painting"") {
     ""BorderRadiiData.cpp"",
     ""BorderRadiusCornerClipper.cpp"",
     ""BordersData.cpp"",
-    ""ButtonPaintable.cpp"",
     ""CanvasPaintable.cpp"",
     ""CheckBoxPaintable.cpp"",
     ""ClippableAndScrollable.cpp"",
diff --git a/Tests/LibWeb/Text/expected/HTML/form-implicit-submission.txt b/Tests/LibWeb/Text/expected/HTML/form-implicit-submission.txt
index 0a16d9b3268d..71125fe4ac3d 100644
--- a/Tests/LibWeb/Text/expected/HTML/form-implicit-submission.txt
+++ b/Tests/LibWeb/Text/expected/HTML/form-implicit-submission.txt
@@ -1,4 +1,4 @@
- wfh :^) PASS   wfh :^)    wfh :^) FAIL PASS FAIL   wfh :^) FAIL FAIL PASS  PASS  wfh :^)   wfh :^)  PASS  PASSwfh :^) FAIL   wfh :^) FAIL   wfh :^)   wfh :^) FAIL   wfh :^)    wfh :^)     defaultButton: click button=PASS
+ wfh :^) PASS   wfh :^) PASS   wfh :^) FAIL PASS FAIL   wfh :^) FAIL FAIL PASS  PASS  wfh :^)   wfh :^)  PASS  PASSwfh :^) FAIL   wfh :^) FAIL   wfh :^)   wfh :^) FAIL   wfh :^)    wfh :^)     defaultButton: click button=PASS
 defaultButton: submit
 defaultButton: handledEvent=true
 defaultButtonAsInput: click button=PASS
diff --git a/Tests/LibWeb/Text/expected/input-value.txt b/Tests/LibWeb/Text/expected/input-value.txt
index 9e5b2e23c2c1..17d2525c4a4b 100644
--- a/Tests/LibWeb/Text/expected/input-value.txt
+++ b/Tests/LibWeb/Text/expected/input-value.txt
@@ -1,4 +1,4 @@
-pass    Select file...No file selected.   text: ""pass""
+pass  pass  Select file...No file selected.   text: ""pass""
 hidden: ""pass""
 button: ""pass""
 checkbox: ""pass""
diff --git a/Userland/Libraries/LibWeb/CMakeLists.txt b/Userland/Libraries/LibWeb/CMakeLists.txt
index a72ef85f3022..41a1af0916d0 100644
--- a/Userland/Libraries/LibWeb/CMakeLists.txt
+++ b/Userland/Libraries/LibWeb/CMakeLists.txt
@@ -471,7 +471,6 @@ set(SOURCES
     Layout/Box.cpp
     Layout/BoxModelMetrics.cpp
     Layout/BreakNode.cpp
-    Layout/ButtonBox.cpp
     Layout/CanvasBox.cpp
     Layout/CheckBox.cpp
     Layout/FlexFormattingContext.cpp
@@ -537,7 +536,6 @@ set(SOURCES
     Painting/BorderPainting.cpp
     Painting/BorderRadiusCornerClipper.cpp
     Painting/BordersData.cpp
-    Painting/ButtonPaintable.cpp
     Painting/CanvasPaintable.cpp
     Painting/Command.cpp
     Painting/CommandExecutorCPU.cpp
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
index 88ba3acc5ead..d7e5f12c12eb 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
@@ -27,17 +27,16 @@
 #include <LibWeb/HTML/HTMLDivElement.h>
 #include <LibWeb/HTML/HTMLFormElement.h>
 #include <LibWeb/HTML/HTMLInputElement.h>
-#include <LibWeb/HTML/ValidityState.h>
 #include <LibWeb/HTML/Numbers.h>
 #include <LibWeb/HTML/Parser/HTMLParser.h>
 #include <LibWeb/HTML/Scripting/Environments.h>
 #include <LibWeb/HTML/SelectedFile.h>
 #include <LibWeb/HTML/SharedImageRequest.h>
+#include <LibWeb/HTML/ValidityState.h>
 #include <LibWeb/HTML/Window.h>
 #include <LibWeb/Infra/CharacterTypes.h>
 #include <LibWeb/Infra/Strings.h>
 #include <LibWeb/Layout/BlockContainer.h>
-#include <LibWeb/Layout/ButtonBox.h>
 #include <LibWeb/Layout/CheckBox.h>
 #include <LibWeb/Layout/ImageBox.h>
 #include <LibWeb/Layout/RadioButton.h>
@@ -100,7 +99,7 @@ JS::GCPtr<Layout::Node> HTMLInputElement::create_layout_node(NonnullRefPtr<CSS::
         return nullptr;
 
     if (type_state() == TypeAttributeState::SubmitButton || type_state() == TypeAttributeState::Button || type_state() == TypeAttributeState::ResetButton)
-        return heap().allocate_without_realm<Layout::ButtonBox>(document(), *this, move(style));
+        return heap().allocate_without_realm<Layout::BlockContainer>(document(), this, move(style));
 
     if (type_state() == TypeAttributeState::ImageButton)
         return heap().allocate_without_realm<Layout::ImageBox>(document(), *this, move(style), *this);
@@ -740,9 +739,12 @@ void HTMLInputElement::create_shadow_tree_if_needed()
     case TypeAttributeState::Hidden:
     case TypeAttributeState::RadioButton:
     case TypeAttributeState::Checkbox:
+        break;
     case TypeAttributeState::Button:
     case TypeAttributeState::SubmitButton:
     case TypeAttributeState::ResetButton:
+        create_button_input_shadow_tree();
+        break;
     case TypeAttributeState::ImageButton:
         break;
     case TypeAttributeState::Color:
@@ -779,6 +781,15 @@ void HTMLInputElement::update_shadow_tree()
     }
 }
 
+void HTMLInputElement::create_button_input_shadow_tree()
+{
+    auto shadow_root = heap().allocate<DOM::ShadowRoot>(realm(), document(), *this, Bindings::ShadowRootMode::Closed);
+    set_shadow_root(shadow_root);
+
+    m_text_node = heap().allocate<DOM::Text>(realm(), document(), value());
+    MUST(shadow_root->append_child(*m_text_node));
+}
+
 void HTMLInputElement::create_text_input_shadow_tree()
 {
     auto shadow_root = heap().allocate<DOM::ShadowRoot>(realm(), document(), *this, Bindings::ShadowRootMode::Closed);
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLInputElement.h b/Userland/Libraries/LibWeb/HTML/HTMLInputElement.h
index 96bd516ca040..9ae84128f7d2 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLInputElement.h
+++ b/Userland/Libraries/LibWeb/HTML/HTMLInputElement.h
@@ -243,6 +243,7 @@ class HTMLInputElement final
     static TypeAttributeState parse_type_attribute(StringView);
     void create_shadow_tree_if_needed();
     void update_shadow_tree();
+    void create_button_input_shadow_tree();
     void create_text_input_shadow_tree();
     void create_color_input_shadow_tree();
     void create_file_input_shadow_tree();
diff --git a/Userland/Libraries/LibWeb/Layout/ButtonBox.cpp b/Userland/Libraries/LibWeb/Layout/ButtonBox.cpp
deleted file mode 100644
index 4f6369d001c7..000000000000
--- a/Userland/Libraries/LibWeb/Layout/ButtonBox.cpp
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-#include <LibGfx/Font/Font.h>
-#include <LibWeb/DOM/Document.h>
-#include <LibWeb/Layout/ButtonBox.h>
-#include <LibWeb/Painting/ButtonPaintable.h>
-
-namespace Web::Layout {
-
-JS_DEFINE_ALLOCATOR(ButtonBox);
-
-ButtonBox::ButtonBox(DOM::Document& document, HTML::HTMLInputElement& element, NonnullRefPtr<CSS::StyleProperties> style)
-    : FormAssociatedLabelableNode(document, element, move(style))
-{
-}
-
-ButtonBox::~ButtonBox() = default;
-
-void ButtonBox::prepare_for_replaced_layout()
-{
-    // For <input type=""submit"" /> and <input type=""button"" />, the contents of
-    // the button does not appear as the contents of the element but as the
-    // value attribute. This is not the case with <button />, which contains
-    // its contents normally.
-    if (is<HTML::HTMLInputElement>(dom_node())) {
-        set_natural_width(CSSPixels::nearest_value_for(first_available_font().width(static_cast<HTML::HTMLInputElement&>(dom_node()).value())));
-        set_natural_height(first_available_font().pixel_size_rounded_up());
-    }
-}
-
-JS::GCPtr<Painting::Paintable> ButtonBox::create_paintable() const
-{
-    return Painting::ButtonPaintable::create(*this);
-}
-
-}
diff --git a/Userland/Libraries/LibWeb/Layout/ButtonBox.h b/Userland/Libraries/LibWeb/Layout/ButtonBox.h
deleted file mode 100644
index de2dcaf75ad8..000000000000
--- a/Userland/Libraries/LibWeb/Layout/ButtonBox.h
+++ /dev/null
@@ -1,28 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-#pragma once
-
-#include <LibWeb/HTML/HTMLInputElement.h>
-#include <LibWeb/Layout/FormAssociatedLabelableNode.h>
-
-namespace Web::Layout {
-
-class ButtonBox final : public FormAssociatedLabelableNode {
-    JS_CELL(ButtonBox, FormAssociatedLabelableNode);
-    JS_DECLARE_ALLOCATOR(ButtonBox);
-
-public:
-    ButtonBox(DOM::Document&, HTML::HTMLInputElement&, NonnullRefPtr<CSS::StyleProperties>);
-    virtual ~ButtonBox() override;
-
-    virtual void prepare_for_replaced_layout() override;
-
-private:
-    virtual JS::GCPtr<Painting::Paintable> create_paintable() const override;
-};
-
-}
diff --git a/Userland/Libraries/LibWeb/Painting/ButtonPaintable.cpp b/Userland/Libraries/LibWeb/Painting/ButtonPaintable.cpp
deleted file mode 100644
index fbeaff1fa88a..000000000000
--- a/Userland/Libraries/LibWeb/Painting/ButtonPaintable.cpp
+++ /dev/null
@@ -1,77 +0,0 @@
-/*
- * Copyright (c) 2018-2022, Andreas Kling <kling@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-#include <LibWeb/HTML/BrowsingContext.h>
-#include <LibWeb/HTML/HTMLImageElement.h>
-#include <LibWeb/Layout/ButtonBox.h>
-#include <LibWeb/Layout/Label.h>
-#include <LibWeb/Painting/ButtonPaintable.h>
-
-namespace Web::Painting {
-
-JS_DEFINE_ALLOCATOR(ButtonPaintable);
-
-JS::NonnullGCPtr<ButtonPaintable> ButtonPaintable::create(Layout::ButtonBox const& layout_box)
-{
-    return layout_box.heap().allocate_without_realm<ButtonPaintable>(layout_box);
-}
-
-ButtonPaintable::ButtonPaintable(Layout::ButtonBox const& layout_box)
-    : LabelablePaintable(layout_box)
-{
-}
-
-Layout::ButtonBox const& ButtonPaintable::layout_box() const
-{
-    return static_cast<Layout::ButtonBox const&>(layout_node());
-}
-
-Layout::ButtonBox& ButtonPaintable::layout_box()
-{
-    return static_cast<Layout::ButtonBox&>(layout_node());
-}
-
-void ButtonPaintable::paint(PaintContext& context, PaintPhase phase) const
-{
-    if (!is_visible())
-        return;
-
-    PaintableBox::paint(context, phase);
-
-    auto const& dom_node = layout_box().dom_node();
-    if (is<HTML::HTMLInputElement>(dom_node) && phase == PaintPhase::Foreground) {
-        auto button_rect = context.enclosing_device_rect(absolute_rect());
-        auto text_rect = button_rect;
-
-        // Apply CSS text-indent property to text rect
-        // FIXME: The second parameter to to_px() needs to be the block container’s own inline-axis inner size:
-        //        https://drafts.csswg.org/css-text-3/#propdef-text-indent
-        auto text_indent = computed_values().text_indent().to_px(layout_box(), CSSPixels());
-        text_rect.translate_by(context.rounded_device_pixels(text_indent), 0);
-
-        // Apply button pressed state offset
-        if (being_pressed()) {
-            auto offset = context.rounded_device_pixels(1);
-            text_rect.translate_by(offset, offset);
-        }
-
-        // Paint button text clipped to button rect
-        auto& painter = context.recording_painter();
-        painter.save();
-        auto clip_rect = absolute_rect();
-        clip_rect.translate_by(enclosing_scroll_frame_offset().value_or({}));
-        painter.add_clip_rect(context.enclosing_device_rect(clip_rect).to_type<int>());
-        painter.draw_text(
-            text_rect.to_type<int>(),
-            static_cast<HTML::HTMLInputElement const&>(dom_node).value(),
-            layout_box().scaled_font(context.device_pixels_per_css_pixel()),
-            Gfx::TextAlignment::Center,
-            computed_values().color());
-        painter.restore();
-    }
-}
-
-}
diff --git a/Userland/Libraries/LibWeb/Painting/ButtonPaintable.h b/Userland/Libraries/LibWeb/Painting/ButtonPaintable.h
deleted file mode 100644
index 4fa9f39404d6..000000000000
--- a/Userland/Libraries/LibWeb/Painting/ButtonPaintable.h
+++ /dev/null
@@ -1,30 +0,0 @@
-/*
- * Copyright (c) 2022, Andreas Kling <kling@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-#pragma once
-
-#include <LibWeb/Layout/ButtonBox.h>
-#include <LibWeb/Painting/LabelablePaintable.h>
-
-namespace Web::Painting {
-
-class ButtonPaintable final : public LabelablePaintable {
-    JS_CELL(ButtonPaintable, LabelablePaintable);
-    JS_DECLARE_ALLOCATOR(ButtonPaintable);
-
-public:
-    static JS::NonnullGCPtr<ButtonPaintable> create(Layout::ButtonBox const&);
-
-    virtual void paint(PaintContext&, PaintPhase) const override;
-
-    Layout::ButtonBox const& layout_box() const;
-    Layout::ButtonBox& layout_box();
-
-private:
-    ButtonPaintable(Layout::ButtonBox const&);
-};
-
-}"
7803dcfcf9a0fdb9470f2beaa3cff7e7d9dff035,2023-10-12 11:08:48,Aliaksandr Kalenik,libweb: Resolve backdrop filter length in apply_style(),False,Resolve backdrop filter length in apply_style(),libweb,"diff --git a/Userland/Libraries/LibWeb/CSS/ComputedValues.h b/Userland/Libraries/LibWeb/CSS/ComputedValues.h
index 21ec32f74a07..c274ce49f6d9 100644
--- a/Userland/Libraries/LibWeb/CSS/ComputedValues.h
+++ b/Userland/Libraries/LibWeb/CSS/ComputedValues.h
@@ -47,6 +47,34 @@ struct QuotesData {
     Vector<Array<String, 2>> strings {};
 };
 
+struct ResolvedBackdropFilter {
+    struct Blur {
+        float radius;
+    };
+
+    struct DropShadow {
+        double offset_x;
+        double offset_y;
+        double radius;
+        Color color;
+    };
+
+    struct HueRotate {
+        float angle_degrees;
+    };
+
+    struct ColorOperation {
+        Filter::Color::Operation operation;
+        float amount;
+    };
+
+    using FilterFunction = Variant<Blur, DropShadow, HueRotate, ColorOperation>;
+
+    bool is_none() const { return filters.size() == 0; }
+
+    Vector<FilterFunction> filters;
+};
+
 class InitialValues {
 public:
     static AspectRatio aspect_ratio() { return AspectRatio { true, {} }; }
@@ -71,7 +99,7 @@ class InitialValues {
     static CSS::Display display() { return CSS::Display { CSS::DisplayOutside::Inline, CSS::DisplayInside::Flow }; }
     static Color color() { return Color::Black; }
     static Color stop_color() { return Color::Black; }
-    static CSS::BackdropFilter backdrop_filter() { return BackdropFilter::make_none(); }
+    static CSS::ResolvedBackdropFilter backdrop_filter() { return ResolvedBackdropFilter { .filters = {} }; }
     static Color background_color() { return Color::Transparent; }
     static CSS::ListStyleType list_style_type() { return CSS::ListStyleType::Disc; }
     static CSS::ListStylePosition list_style_position() { return CSS::ListStylePosition::Outside; }
@@ -302,7 +330,7 @@ class ComputedValues {
     CSS::JustifyContent justify_content() const { return m_noninherited.justify_content; }
     CSS::JustifySelf justify_self() const { return m_noninherited.justify_self; }
     CSS::JustifyItems justify_items() const { return m_noninherited.justify_items; }
-    CSS::BackdropFilter const& backdrop_filter() const { return m_noninherited.backdrop_filter; }
+    CSS::ResolvedBackdropFilter const& backdrop_filter() const { return m_noninherited.backdrop_filter; }
     Vector<ShadowData> const& box_shadow() const { return m_noninherited.box_shadow; }
     CSS::BoxSizing box_sizing() const { return m_noninherited.box_sizing; }
     CSS::Size const& width() const { return m_noninherited.width; }
@@ -452,7 +480,7 @@ class ComputedValues {
         CSS::LengthBox inset { InitialValues::inset() };
         CSS::LengthBox margin { InitialValues::margin() };
         CSS::LengthBox padding { InitialValues::padding() };
-        CSS::BackdropFilter backdrop_filter { InitialValues::backdrop_filter() };
+        CSS::ResolvedBackdropFilter backdrop_filter { InitialValues::backdrop_filter() };
         BorderData border_left;
         BorderData border_top;
         BorderData border_right;
@@ -565,7 +593,7 @@ class MutableComputedValues final : public ComputedValues {
     void set_list_style_type(CSS::ListStyleType value) { m_inherited.list_style_type = value; }
     void set_list_style_position(CSS::ListStylePosition value) { m_inherited.list_style_position = value; }
     void set_display(CSS::Display value) { m_noninherited.display = value; }
-    void set_backdrop_filter(CSS::BackdropFilter backdrop_filter) { m_noninherited.backdrop_filter = move(backdrop_filter); }
+    void set_backdrop_filter(CSS::ResolvedBackdropFilter backdrop_filter) { m_noninherited.backdrop_filter = move(backdrop_filter); }
     void set_border_bottom_left_radius(CSS::BorderRadiusData value) { m_noninherited.border_bottom_left_radius = move(value); }
     void set_border_bottom_right_radius(CSS::BorderRadiusData value) { m_noninherited.border_bottom_right_radius = move(value); }
     void set_border_top_left_radius(CSS::BorderRadiusData value) { m_noninherited.border_top_left_radius = move(value); }
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValues/FilterValueListStyleValue.cpp b/Userland/Libraries/LibWeb/CSS/StyleValues/FilterValueListStyleValue.cpp
index b877129cc854..9c5b8d42e31d 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValues/FilterValueListStyleValue.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleValues/FilterValueListStyleValue.cpp
@@ -23,18 +23,6 @@ float Filter::Blur::resolved_radius(Layout::Node const& node) const
     return sigma * 2;
 }
 
-Filter::DropShadow::Resolved Filter::DropShadow::resolved(Layout::Node const& node) const
-{
-    // The default value for omitted values is missing length values set to 0
-    // and the missing used color is taken from the color property.
-    return Resolved {
-        offset_x.to_px(node).to_double(),
-        offset_y.to_px(node).to_double(),
-        radius.has_value() ? radius->to_px(node).to_double() : 0.0,
-        color.has_value() ? *color : node.computed_values().color()
-    };
-}
-
 float Filter::HueRotate::angle_degrees() const
 {
     // Default value when omitted is 0deg.
diff --git a/Userland/Libraries/LibWeb/CSS/StyleValues/FilterValueListStyleValue.h b/Userland/Libraries/LibWeb/CSS/StyleValues/FilterValueListStyleValue.h
index 8d65b2e699f5..8d7e96a6caca 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleValues/FilterValueListStyleValue.h
+++ b/Userland/Libraries/LibWeb/CSS/StyleValues/FilterValueListStyleValue.h
@@ -29,13 +29,6 @@ struct DropShadow {
     Length offset_y;
     Optional<Length> radius {};
     Optional<Color> color {};
-    struct Resolved {
-        double offset_x;
-        double offset_y;
-        double radius;
-        Color color;
-    };
-    Resolved resolved(Layout::Node const&) const;
     bool operator==(DropShadow const&) const = default;
 };
 
diff --git a/Userland/Libraries/LibWeb/Layout/Node.cpp b/Userland/Libraries/LibWeb/Layout/Node.cpp
index aff4b62ea6df..0b5de0ea3ee0 100644
--- a/Userland/Libraries/LibWeb/Layout/Node.cpp
+++ b/Userland/Libraries/LibWeb/Layout/Node.cpp
@@ -537,7 +537,35 @@ void NodeWithStyle::apply_style(const CSS::StyleProperties& computed_style)
     computed_values.set_flex_shrink(computed_style.flex_shrink());
     computed_values.set_order(computed_style.order());
     computed_values.set_clip(computed_style.clip());
-    computed_values.set_backdrop_filter(computed_style.backdrop_filter());
+
+    if (computed_style.backdrop_filter().has_filters()) {
+        CSS::ResolvedBackdropFilter resolved_backdrop_filter;
+        for (auto& filter : computed_style.backdrop_filter().filters()) {
+            filter.visit(
+                [&](CSS::Filter::Blur const& blur) {
+                    resolved_backdrop_filter.filters.append(CSS::ResolvedBackdropFilter::Blur {
+                        .radius = blur.resolved_radius(*this) });
+                },
+                [&](CSS::Filter::DropShadow const& drop_shadow) {
+                    // The default value for omitted values is missing length values set to 0
+                    // and the missing used color is taken from the color property.
+                    resolved_backdrop_filter.filters.append(CSS::ResolvedBackdropFilter::DropShadow {
+                        .offset_x = drop_shadow.offset_x.to_px(*this).to_double(),
+                        .offset_y = drop_shadow.offset_y.to_px(*this).to_double(),
+                        .radius = drop_shadow.radius.has_value() ? drop_shadow.radius->to_px(*this).to_double() : 0.0,
+                        .color = drop_shadow.color.has_value() ? *drop_shadow.color : this->computed_values().color() });
+                },
+                [&](CSS::Filter::Color const& color_operation) {
+                    resolved_backdrop_filter.filters.append(CSS::ResolvedBackdropFilter::ColorOperation {
+                        .operation = color_operation.operation,
+                        .amount = color_operation.resolved_amount() });
+                },
+                [&](CSS::Filter::HueRotate const& hue_rotate) {
+                    resolved_backdrop_filter.filters.append(CSS::ResolvedBackdropFilter::HueRotate { .angle_degrees = hue_rotate.angle_degrees() });
+                });
+        }
+        computed_values.set_backdrop_filter(resolved_backdrop_filter);
+    }
 
     auto justify_content = computed_style.justify_content();
     if (justify_content.has_value())
diff --git a/Userland/Libraries/LibWeb/Painting/FilterPainting.cpp b/Userland/Libraries/LibWeb/Painting/FilterPainting.cpp
index 4b568fdb68c4..07912b5f478b 100644
--- a/Userland/Libraries/LibWeb/Painting/FilterPainting.cpp
+++ b/Userland/Libraries/LibWeb/Painting/FilterPainting.cpp
@@ -19,7 +19,7 @@
 
 namespace Web::Painting {
 
-void apply_filter_list(Gfx::Bitmap& target_bitmap, Layout::Node const& node, ReadonlySpan<CSS::FilterFunction> filter_list)
+void apply_filter_list(Gfx::Bitmap& target_bitmap, ReadonlySpan<CSS::ResolvedBackdropFilter::FilterFunction> filter_list)
 {
     auto apply_color_filter = [&](Gfx::ColorFilter const& filter) {
         const_cast<Gfx::ColorFilter&>(filter).apply(target_bitmap, target_bitmap.rect(), target_bitmap, target_bitmap.rect());
@@ -27,14 +27,14 @@ void apply_filter_list(Gfx::Bitmap& target_bitmap, Layout::Node const& node, Rea
     for (auto& filter_function : filter_list) {
         // See: https://drafts.fxtf.org/filter-effects-1/#supported-filter-functions
         filter_function.visit(
-            [&](CSS::Filter::Blur const& blur) {
+            [&](CSS::ResolvedBackdropFilter::Blur const& blur_filter) {
                 // Applies a Gaussian blur to the input image.
                 // The passed parameter defines the value of the standard deviation to the Gaussian function.
                 Gfx::StackBlurFilter filter { target_bitmap };
-                filter.process_rgba(blur.resolved_radius(node), Color::Transparent);
+                filter.process_rgba(blur_filter.radius, Color::Transparent);
             },
-            [&](CSS::Filter::Color const& color) {
-                auto amount = color.resolved_amount();
+            [&](CSS::ResolvedBackdropFilter::ColorOperation const& color) {
+                auto amount = color.amount;
                 auto amount_clamped = clamp(amount, 0.0f, 1.0f);
                 switch (color.operation) {
                 case CSS::Filter::Color::Operation::Grayscale: {
@@ -86,19 +86,19 @@ void apply_filter_list(Gfx::Bitmap& target_bitmap, Layout::Node const& node, Rea
                     break;
                 }
             },
-            [&](CSS::Filter::HueRotate const& hue_rotate) {
+            [&](CSS::ResolvedBackdropFilter::HueRotate const& hue_rotate) {
                 // Applies a hue rotation on the input image.
                 // The passed parameter defines the number of degrees around the color circle the input samples will be adjusted.
                 // A value of 0deg leaves the input unchanged. Implementations must not normalize this value in order to allow animations beyond 360deg.
-                apply_color_filter(Gfx::HueRotateFilter { hue_rotate.angle_degrees() });
+                apply_color_filter(Gfx::HueRotateFilter { hue_rotate.angle_degrees });
             },
-            [&](CSS::Filter::DropShadow const&) {
+            [&](CSS::ResolvedBackdropFilter::DropShadow const&) {
                 dbgln(""TODO: Implement drop-shadow() filter function!"");
             });
     }
 }
 
-void apply_backdrop_filter(PaintContext& context, Layout::Node const& node, CSSPixelRect const& backdrop_rect, BorderRadiiData const& border_radii_data, CSS::BackdropFilter const& backdrop_filter)
+void apply_backdrop_filter(PaintContext& context, CSSPixelRect const& backdrop_rect, BorderRadiiData const& border_radii_data, CSS::ResolvedBackdropFilter const& backdrop_filter)
 {
     // This performs the backdrop filter operation: https://drafts.fxtf.org/filter-effects-2/#backdrop-filter-operation
 
@@ -121,7 +121,7 @@ void apply_backdrop_filter(PaintContext& context, Layout::Node const& node, CSSP
     }
     auto backdrop_bitmap = maybe_backdrop_bitmap.release_value();
     // 2. Apply the backdrop-filter’s filter operations to the entire contents of T'.
-    apply_filter_list(*backdrop_bitmap, node, backdrop_filter.filters());
+    apply_filter_list(*backdrop_bitmap, backdrop_filter.filters);
 
     // FIXME: 3. If element B has any transforms (between B and the Backdrop Root), apply the inverse of those transforms to the contents of T’.
 
diff --git a/Userland/Libraries/LibWeb/Painting/FilterPainting.h b/Userland/Libraries/LibWeb/Painting/FilterPainting.h
index 71867f14de21..4f5e4b286575 100644
--- a/Userland/Libraries/LibWeb/Painting/FilterPainting.h
+++ b/Userland/Libraries/LibWeb/Painting/FilterPainting.h
@@ -12,8 +12,8 @@
 
 namespace Web::Painting {
 
-void apply_filter_list(Gfx::Bitmap& target_bitmap, Layout::Node const& node, ReadonlySpan<CSS::FilterFunction> filter_list);
+void apply_filter_list(Gfx::Bitmap& target_bitmap, ReadonlySpan<CSS::ResolvedBackdropFilter::FilterFunction> filter_list);
 
-void apply_backdrop_filter(PaintContext&, Layout::Node const&, CSSPixelRect const&, BorderRadiiData const&, CSS::BackdropFilter const&);
+void apply_backdrop_filter(PaintContext&, CSSPixelRect const&, BorderRadiiData const&, CSS::ResolvedBackdropFilter const&);
 
 }
diff --git a/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp b/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
index a5925deb31ae..f5017692c420 100644
--- a/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
+++ b/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
@@ -325,7 +325,7 @@ void PaintableBox::paint_backdrop_filter(PaintContext& context) const
 {
     auto& backdrop_filter = computed_values().backdrop_filter();
     if (!backdrop_filter.is_none())
-        apply_backdrop_filter(context, layout_node(), absolute_border_box_rect(), normalized_border_radii_data(), backdrop_filter);
+        apply_backdrop_filter(context, absolute_border_box_rect(), normalized_border_radii_data(), backdrop_filter);
 }
 
 void PaintableBox::paint_background(PaintContext& context) const"
891e668e35f30ed02dfa29e5e016ef5aa3d41cb2,2019-06-22 00:25:41,Andreas Kling,libhtml: Add an empty CSS parser.,False,Add an empty CSS parser.,libhtml,"diff --git a/LibHTML/CSS/.gitignore b/LibHTML/CSS/.gitignore
new file mode 100644
index 000000000000..887283905ef2
--- /dev/null
+++ b/LibHTML/CSS/.gitignore
@@ -0,0 +1 @@
+DefaultStyleSheetSource.cpp
diff --git a/LibHTML/CSS/StyleDeclaration.h b/LibHTML/CSS/StyleDeclaration.h
index b9e3291838da..e5ca7a04f819 100644
--- a/LibHTML/CSS/StyleDeclaration.h
+++ b/LibHTML/CSS/StyleDeclaration.h
@@ -5,7 +5,7 @@
 
 class StyleDeclaration : public RefCounted<StyleDeclaration> {
 public:
-    NonnullRefPtr<StyleDeclaration> create(const String& property_name, NonnullRefPtr<StyleValue>&& value)
+    static NonnullRefPtr<StyleDeclaration> create(const String& property_name, NonnullRefPtr<StyleValue>&& value)
     {
         return adopt(*new StyleDeclaration(property_name, move(value)));
     }
diff --git a/LibHTML/CSS/StyleRule.cpp b/LibHTML/CSS/StyleRule.cpp
index f8688b9630fd..06a592578870 100644
--- a/LibHTML/CSS/StyleRule.cpp
+++ b/LibHTML/CSS/StyleRule.cpp
@@ -4,5 +4,8 @@ StyleRule::StyleRule(Vector<Selector>&& selectors, Vector<NonnullRefPtr<StyleDec
     : m_selectors(move(selectors))
     , m_declarations(move(declarations))
 {
+}
 
+StyleRule::~StyleRule()
+{
 }
diff --git a/LibHTML/CSS/StyleRule.h b/LibHTML/CSS/StyleRule.h
index e4377b8053a3..ec40b7d28ab8 100644
--- a/LibHTML/CSS/StyleRule.h
+++ b/LibHTML/CSS/StyleRule.h
@@ -6,7 +6,7 @@
 
 class StyleRule : public RefCounted<StyleRule> {
 public:
-    NonnullRefPtr<StyleRule> create(Vector<Selector>&& selectors, Vector<NonnullRefPtr<StyleDeclaration>>&& declarations)
+    static NonnullRefPtr<StyleRule> create(Vector<Selector>&& selectors, Vector<NonnullRefPtr<StyleDeclaration>>&& declarations)
     {
         return adopt(*new StyleRule(move(selectors), move(declarations)));
     }
diff --git a/LibHTML/CSS/StyleSheet.h b/LibHTML/CSS/StyleSheet.h
index 3a48e3a56307..f769e0f8e1d0 100644
--- a/LibHTML/CSS/StyleSheet.h
+++ b/LibHTML/CSS/StyleSheet.h
@@ -5,7 +5,7 @@
 
 class StyleSheet : public RefCounted<StyleSheet> {
 public:
-    NonnullRefPtr<StyleSheet> create(Vector<NonnullRefPtr<StyleRule>>&& rules)
+    static NonnullRefPtr<StyleSheet> create(Vector<NonnullRefPtr<StyleRule>>&& rules)
     {
         return adopt(*new StyleSheet(move(rules)));
     }
diff --git a/LibHTML/Dump.cpp b/LibHTML/Dump.cpp
index 8fbaec164d94..3fb8d1a741b8 100644
--- a/LibHTML/Dump.cpp
+++ b/LibHTML/Dump.cpp
@@ -1,3 +1,4 @@
+#include <LibHTML/CSS/StyleSheet.h>
 #include <LibHTML/DOM/Document.h>
 #include <LibHTML/DOM/Element.h>
 #include <LibHTML/DOM/Text.h>
@@ -65,3 +66,8 @@ void dump_tree(const LayoutNode& layout_node)
     });
     --indent;
 }
+
+void dump_sheet(const StyleSheet& sheet)
+{
+    printf(""StyleSheet{%p}: %d rule(s)\n"", &sheet, sheet.rules().size());
+}
diff --git a/LibHTML/Dump.h b/LibHTML/Dump.h
index cb5bfe64fbc6..b7049f861a13 100644
--- a/LibHTML/Dump.h
+++ b/LibHTML/Dump.h
@@ -2,6 +2,8 @@
 
 class Node;
 class LayoutNode;
+class StyleSheet;
 
 void dump_tree(const Node&);
 void dump_tree(const LayoutNode&);
+void dump_sheet(const StyleSheet&);
diff --git a/LibHTML/Makefile b/LibHTML/Makefile
index 1e3039fb72ef..bc3890a4987e 100644
--- a/LibHTML/Makefile
+++ b/LibHTML/Makefile
@@ -11,7 +11,9 @@ LIBHTML_OBJS = \
     CSS/StyleRule.o \
     CSS/StyleDeclaration.o \
     CSS/StyleValue.o \
-    Parser/Parser.o \
+    CSS/DefaultStyleSheetSource.o \
+    Parser/HTMLParser.o \
+    Parser/CSSParser.o \
     Layout/LayoutNode.o \
     Layout/LayoutText.o \
     Layout/LayoutBlock.o \
@@ -21,6 +23,9 @@ LIBHTML_OBJS = \
     Frame.o \
     Dump.o
 
+GENERATED_SOURCES = \
+    CSS/DefaultStyleSheetSource.cpp
+
 TEST_OBJS = test.o
 TEST_PROGRAM = tho
 
@@ -31,6 +36,9 @@ DEFINES += -DUSERLAND
 
 all: $(LIBRARY) $(TEST_PROGRAM)
 
+CSS/DefaultStyleSheetSource.cpp: CSS/Default.css Scripts/GenerateStyleSheetSource.sh
+	@echo ""GENERATE $@""; Scripts/GenerateStyleSheetSource.sh default_stylesheet_source $< > $@
+
 $(TEST_PROGRAM): $(TEST_OBJS) $(LIBRARY)
 	$(LD) -o $@ $(LDFLAGS) -L. $(TEST_OBJS) -lhtml -lgui -lcore -lc
 
@@ -43,7 +51,7 @@ $(LIBRARY): $(LIBHTML_OBJS)
 -include $(OBJS:%.o=%.d)
 
 clean:
-	@echo ""CLEAN""; rm -f $(TEST_PROGRAM) $(LIBRARY) $(OBJS) *.d
+	@echo ""CLEAN""; rm -f $(TEST_PROGRAM) $(LIBRARY) $(OBJS) *.d $(GENERATED_SOURCES)
 
 install: $(LIBRARY)
 	mkdir -p ../Root/usr/include/LibHTML
diff --git a/LibHTML/Parser/CSSParser.cpp b/LibHTML/Parser/CSSParser.cpp
new file mode 100644
index 000000000000..be1c7457463d
--- /dev/null
+++ b/LibHTML/Parser/CSSParser.cpp
@@ -0,0 +1,11 @@
+#include <LibHTML/CSS/StyleSheet.h>
+#include <LibHTML/Parser/CSSParser.h>
+#include <ctype.h>
+#include <stdio.h>
+
+NonnullRefPtr<StyleSheet> parse_css(const String& css)
+{
+    Vector<NonnullRefPtr<StyleRule>> rules;
+
+    return StyleSheet::create(move(rules));
+}
diff --git a/LibHTML/Parser/CSSParser.h b/LibHTML/Parser/CSSParser.h
new file mode 100644
index 000000000000..90003bbf01e5
--- /dev/null
+++ b/LibHTML/Parser/CSSParser.h
@@ -0,0 +1,7 @@
+#pragma once
+
+#include <AK/NonnullRefPtr.h>
+#include <LibHTML/CSS/StyleSheet.h>
+
+NonnullRefPtr<StyleSheet> parse_css(const String&);
+
diff --git a/LibHTML/Parser/Parser.cpp b/LibHTML/Parser/HTMLParser.cpp
similarity index 98%
rename from LibHTML/Parser/Parser.cpp
rename to LibHTML/Parser/HTMLParser.cpp
index 63f1ffb45b46..1f8faaf37c5d 100644
--- a/LibHTML/Parser/Parser.cpp
+++ b/LibHTML/Parser/HTMLParser.cpp
@@ -1,6 +1,6 @@
 #include <LibHTML/DOM/Element.h>
 #include <LibHTML/DOM/Text.h>
-#include <LibHTML/Parser/Parser.h>
+#include <LibHTML/Parser/HTMLParser.h>
 #include <ctype.h>
 #include <stdio.h>
 
@@ -32,7 +32,7 @@ static bool is_self_closing_tag(const String& tag_name)
         || tag_name == ""wbr"";
 }
 
-NonnullRefPtr<Document> parse(const String& html)
+NonnullRefPtr<Document> parse_html(const String& html)
 {
     Vector<NonnullRefPtr<ParentNode>> node_stack;
 
diff --git a/LibHTML/Parser/Parser.h b/LibHTML/Parser/HTMLParser.h
similarity index 61%
rename from LibHTML/Parser/Parser.h
rename to LibHTML/Parser/HTMLParser.h
index 976fe6b61773..5b7c5482eb37 100644
--- a/LibHTML/Parser/Parser.h
+++ b/LibHTML/Parser/HTMLParser.h
@@ -3,5 +3,5 @@
 #include <AK/NonnullRefPtr.h>
 #include <LibHTML/DOM/Document.h>
 
-NonnullRefPtr<Document> parse(const String& html);
+NonnullRefPtr<Document> parse_html(const String&);
 
diff --git a/LibHTML/Scripts/GenerateStyleSheetSource.sh b/LibHTML/Scripts/GenerateStyleSheetSource.sh
new file mode 100755
index 000000000000..4bea749e0494
--- /dev/null
+++ b/LibHTML/Scripts/GenerateStyleSheetSource.sh
@@ -0,0 +1,10 @@
+#!/bin/bash
+
+echo ""extern const char $1[];""
+echo ""const char $1[] = \""\\""
+IFS=$'\n'
+for line in $(cat $2); do
+    echo $line""\\""
+done
+echo ""\"";""
+
diff --git a/LibHTML/test.cpp b/LibHTML/test.cpp
index db55d2f196ce..2e426dea228f 100644
--- a/LibHTML/test.cpp
+++ b/LibHTML/test.cpp
@@ -1,7 +1,8 @@
 #include <LibCore/CFile.h>
 #include <LibHTML/Dump.h>
 #include <LibHTML/Frame.h>
-#include <LibHTML/Parser/Parser.h>
+#include <LibHTML/Parser/CSSParser.h>
+#include <LibHTML/Parser/HTMLParser.h>
 #include <stdio.h>
 
 int main(int argc, char** argv)
@@ -11,8 +12,15 @@ int main(int argc, char** argv)
         fprintf(stderr, ""Error: %s\n"", f.error_string());
         return 1;
     }
+
+    extern const char default_stylesheet_source[];
+    String css = default_stylesheet_source;
+
+    auto sheet = parse_css(css);
+    dump_sheet(sheet);
+
     String html = String::copy(f.read_all());
-    auto doc = parse(html);
+    auto doc = parse_html(html);
     dump_tree(doc);
 
     doc->build_layout_tree();"
3b80358142133edfb9060a360bbbec96a562f926,2021-01-21 16:04:39,Andreas Kling,libcore: Always fail Account authentication on missing shadow entry,False,Always fail Account authentication on missing shadow entry,libcore,"diff --git a/Userland/Libraries/LibCore/Account.cpp b/Userland/Libraries/LibCore/Account.cpp
index 04981b7cc92c..5a71b1e05387 100644
--- a/Userland/Libraries/LibCore/Account.cpp
+++ b/Userland/Libraries/LibCore/Account.cpp
@@ -102,6 +102,10 @@ Result<Account, String> Account::from_uid(uid_t uid)
 
 bool Account::authenticate(const char* password) const
 {
+    // If there was no shadow entry for this account, authentication always fails.
+    if (m_password_hash.is_null())
+        return false;
+
     // An empty passwd field indicates that no password is required to log in.
     if (m_password_hash.is_empty())
         return true;
@@ -206,7 +210,7 @@ void Account::load_shadow_file()
         auto line = shadow_file->read_line();
         if (line.is_null())
             break;
-        auto parts = line.split(':');
+        auto parts = line.split(':', true);
         if (parts.size() != 2) {
             dbgln(""Malformed shadow entry, ignoring."");
             continue;
diff --git a/Userland/Libraries/LibCore/Account.h b/Userland/Libraries/LibCore/Account.h
index 433d3c4926d8..e50aaaa3babd 100644
--- a/Userland/Libraries/LibCore/Account.h
+++ b/Userland/Libraries/LibCore/Account.h
@@ -51,7 +51,10 @@ class Account {
     void set_password(const char* password);
     void set_password_enabled(bool enabled);
     void delete_password();
-    bool has_password() const { return !m_password_hash.is_empty(); }
+
+    // A null password means that this account was missing from /etc/shadow.
+    // It's considered to have a password in that case, and authentication will always fail.
+    bool has_password() const { return !m_password_hash.is_empty() || m_password_hash.is_null(); }
 
     uid_t uid() const { return m_uid; }
     gid_t gid() const { return m_gid; }
@@ -73,8 +76,6 @@ class Account {
 
     String m_username;
 
-    // Contents of passwd field in passwd entry.
-    // Can be empty, ""x"", or contain a leading '!'
     String m_password_hash;
     uid_t m_uid { 0 };
     gid_t m_gid { 0 };"
a640fcc693cc4e48c6e0b2f84f80e0cab2df50d0,2024-10-27 18:03:46,Andreas Kling,libweb: Import a bunch of :has() selector tests from WPT,False,Import a bunch of :has() selector tests from WPT,libweb,"diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-argument-with-explicit-scope.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-argument-with-explicit-scope.txt
new file mode 100644
index 000000000000..d0f3f773269d
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-argument-with-explicit-scope.txt
@@ -0,0 +1,24 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 13 tests
+
+12 Pass
+1 Fail
+Details
+Result	Test Name	MessagePass	:has(:scope) matches expected elements on scope1	
+Pass	:has(:scope .c) matches expected elements on scope1	
+Pass	:has(.a :scope) matches expected elements on scope1	
+Fail	.a:has(:scope) .c matches expected elements on scope1	assert_equals: expected ""d02,d03"" but got """"
+Pass	.a:has(:scope) .c and :is(.a :scope .c) returns same elements on scope1	
+Pass	.a:has(:scope) .c matches expected elements on scope2	
+Pass	.a:has(:scope) .c and :is(.a :scope .c) returns same elements on scope2	
+Pass	.c:has(:is(:scope .d)) matches expected elements on scope1	
+Pass	.c:has(:is(:scope .d)) and :scope .c:has(.d) returns same elements on scope1	
+Pass	.c:has(:is(:scope .d)) and .c:has(.d) returns same elements on scope1	
+Pass	.c:has(:is(:scope .d)) matches expected elements on scope2	
+Pass	.c:has(:is(:scope .d)) and :scope .c:has(.d) returns same elements on scope2	
+Pass	.c:has(:is(:scope .d)) and .c:has(.d) returns same elements on scope2	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-basic.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-basic.txt
new file mode 100644
index 000000000000..31172efbb673
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-basic.txt
@@ -0,0 +1,28 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 18 tests
+
+18 Pass
+Details
+Result	Test Name	MessagePass	:has(#a) matches expected elements	
+Pass	:has(.ancestor) matches expected elements	
+Pass	:has(.target) matches expected elements	
+Pass	:has(.descendant) matches expected elements	
+Pass	.parent:has(.target) matches expected elements	
+Pass	:has(.sibling ~ .target) matches expected elements	
+Pass	.parent:has(.sibling ~ .target) matches expected elements	
+Pass	:has(:is(.target ~ .sibling .descendant)) matches expected elements	
+Pass	.parent:has(:is(.target ~ .sibling .descendant)) matches expected elements	
+Pass	.sibling:has(.descendant) ~ .target matches expected elements	
+Pass	:has(> .parent) matches expected elements	
+Pass	:has(> .target) matches expected elements	
+Pass	:has(> .parent, > .target) matches expected elements	
+Pass	:has(+ #h) matches expected elements	
+Pass	.parent:has(~ #h) matches expected elements	
+Pass	.sibling:has(.descendant) matches expected element	
+Pass	closest(.ancestor:has(.descendant)) returns expected element	
+Pass	:has(.target ~ .sibling .descendant) matches expectedly	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-matches-to-uninserted-elements.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-matches-to-uninserted-elements.txt
new file mode 100644
index 000000000000..9d62965a50ef
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-matches-to-uninserted-elements.txt
@@ -0,0 +1,22 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 12 tests
+
+12 Pass
+Details
+Result	Test Name	MessagePass	:has(child) matches expectedly	
+Pass	:has(> child) matches expectedly	
+Pass	:has(descendant) matches expectedly	
+Pass	:has(> descendant) matches expectedly	
+Pass	:has(~ direct_sibling) matches expectedly	
+Pass	:has(+ direct_sibling) matches expectedly	
+Pass	:has(~ indirect_sibling) matches expectedly	
+Pass	:has(+ indirect_sibling) matches expectedly	
+Pass	:has(*) matches expectedly	
+Pass	:has(> *) matches expectedly	
+Pass	:has(~ *) matches expectedly	
+Pass	:has(+ *) matches expectedly	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-relative-argument.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-relative-argument.txt
new file mode 100644
index 000000000000..f3ca85257a90
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-relative-argument.txt
@@ -0,0 +1,45 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 35 tests
+
+35 Pass
+Details
+Result	Test Name	MessagePass	.x:has(.a) matches expected elements	
+Pass	.x:has(.a > .b) matches expected elements	
+Pass	.x:has(.a .b) matches expected elements	
+Pass	.x:has(.a + .b) matches expected elements	
+Pass	.x:has(.a ~ .b) matches expected elements	
+Pass	.x:has(> .a) matches expected elements	
+Pass	.x:has(> .a > .b) matches expected elements	
+Pass	.x:has(> .a .b) matches expected elements	
+Pass	.x:has(> .a + .b) matches expected elements	
+Pass	.x:has(> .a ~ .b) matches expected elements	
+Pass	.x:has(+ .a) matches expected elements	
+Pass	.x:has(+ .a > .b) matches expected elements	
+Pass	.x:has(+ .a .b) matches expected elements	
+Pass	.x:has(+ .a + .b) matches expected elements	
+Pass	.x:has(+ .a ~ .b) matches expected elements	
+Pass	.x:has(~ .a) matches expected elements	
+Pass	.x:has(~ .a > .b) matches expected elements	
+Pass	.x:has(~ .a .b) matches expected elements	
+Pass	.x:has(~ .a + .b) matches expected elements	
+Pass	.x:has(~ .a + .b > .c) matches expected elements	
+Pass	.x:has(~ .a + .b .c) matches expected elements	
+Pass	.x:has(.d .e) matches expected elements	
+Pass	.x:has(.d .e) .f matches expected elements	
+Pass	.x:has(> .d) matches expected elements	
+Pass	.x:has(> .d) .f matches expected elements	
+Pass	.x:has(~ .d ~ .e) matches expected elements	
+Pass	.x:has(~ .d ~ .e) ~ .f matches expected elements	
+Pass	.x:has(+ .d ~ .e) matches expected elements	
+Pass	.x:has(+ .d ~ .e) ~ .f matches expected elements	
+Pass	.y:has(> .g .h) matches expected elements	
+Pass	.y:has(.g .h) matches expected elements	
+Pass	.y:has(> .g .h) .i matches expected elements	
+Pass	.y:has(.g .h) .i matches expected elements	
+Pass	.d .x:has(.e) matches expected elements	
+Pass	.d ~ .x:has(~ .e) matches expected elements	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-sibling-chrome-crash.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-sibling-chrome-crash.txt
new file mode 100644
index 000000000000..465701e3460a
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-sibling-chrome-crash.txt
@@ -0,0 +1 @@
+PASS
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-specificity.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-specificity.txt
new file mode 100644
index 000000000000..c1b94e4e2a1d
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/has-specificity.txt
@@ -0,0 +1,18 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 8 tests
+
+8 Fail
+Details
+Result	Test Name	MessageFail	:has(#foo) wins over :has(.foo)	assert_equals: expected ""PASS"" but got """"
+Fail	:has(span#foo) wins over :has(#foo)	assert_equals: expected ""PASS"" but got """"
+Fail	:has(.bar, #foo) has same specificity as :has(#foo, .bar)	assert_equals: expected ""PASS"" but got """"
+Fail	:has(.bar, #foo) wins over :has(.foo, .bar)	assert_equals: expected ""PASS"" but got """"
+Fail	:has(span + span) wins over :has(span)	assert_equals: expected ""PASS"" but got """"
+Fail	:has(span, li, p) wins over :has(span, lo, p)	assert_equals: expected ""PASS"" but got """"
+Fail	latter .baz wins over :has(.foo)	assert_equals: expected ""PASS"" but got """"
+Fail	latter :has(.foo) wins over .baz	assert_equals: expected ""PASS"" but got """"
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-css-nesting-shared.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-css-nesting-shared.txt
new file mode 100644
index 000000000000..38ceb4fbf6c8
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-css-nesting-shared.txt
@@ -0,0 +1,22 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 12 tests
+
+12 Pass
+Details
+Result	Test Name	MessagePass	add .test to trigger1 - check subject1_1	
+Pass	add .test to trigger1 - check subject1_2	
+Pass	remove .test from trigger1 - check subject1_1	
+Pass	remove .test from trigger1 - check subject1_2	
+Pass	add .test to trigger2 - check subject2_1	
+Pass	add .test to trigger2 - check subject2_2	
+Pass	remove .test from trigger2 - check subject2_1	
+Pass	remove .test from trigger2 - check subject2_2	
+Pass	add .test to trigger3 - check subject3_1	
+Pass	add .test to trigger3 - check subject3_2	
+Pass	remove .test from trigger3 - check subject3_1	
+Pass	remove .test from trigger3 - check subject3_2	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-in-adjacent-position.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-in-adjacent-position.txt
new file mode 100644
index 000000000000..e137e28f07ed
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-in-adjacent-position.txt
@@ -0,0 +1,305 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 295 tests
+
+295 Pass
+Details
+Result	Test Name	MessagePass	Initial color	
+Pass	add .test to previous_sibling	
+Pass	remove .test from previous_sibling	
+Pass	add .test to previous_sibling_child	
+Pass	remove .test from previous_sibling_child	
+Pass	add .test to previous_sibling_descendant	
+Pass	remove .test from previous_sibling_descendant	
+Pass	add .test to subject	
+Pass	remove .test from subject	
+Pass	add .test to next_sibling	
+Pass	remove .test from next_sibling	
+Pass	add .test to next_sibling_child	
+Pass	remove .test from next_sibling_child	
+Pass	add .test to next_sibling_descendant	
+Pass	remove .test from next_sibling_descendant	
+Pass	insert element div.test before previous_sibling	
+Pass	remove the class 'test' from the element inserted before previous_sibling	
+Pass	add the class 'test' again to the element inserted before previous_sibling	
+Pass	remove element div.test before previous_sibling	
+Pass	insert element div before previous_sibling	
+Pass	add the class 'test' to the element inserted again before previous_sibling	
+Pass	remove the class 'test' from the element inserted again before previous_sibling	
+Pass	remove element div before previous_sibling	
+Pass	insert element div[test_attr] before previous_sibling	
+Pass	remove element div[test_attr] before previous_sibling	
+Pass	insert element div.test before previous_sibling_child	
+Pass	remove the class 'test' from the element inserted before previous_sibling_child	
+Pass	add the class 'test' again to the element inserted before previous_sibling_child	
+Pass	remove element div.test before previous_sibling_child	
+Pass	insert element div before previous_sibling_child	
+Pass	add the class 'test' to the element inserted again before previous_sibling_child	
+Pass	remove the class 'test' from the element inserted again before previous_sibling_child	
+Pass	remove element div before previous_sibling_child	
+Pass	insert element div[test_attr] before previous_sibling_child	
+Pass	remove element div[test_attr] before previous_sibling_child	
+Pass	insert element div.test before previous_sibling_descendant	
+Pass	remove the class 'test' from the element inserted before previous_sibling_descendant	
+Pass	add the class 'test' again to the element inserted before previous_sibling_descendant	
+Pass	remove element div.test before previous_sibling_descendant	
+Pass	insert element div before previous_sibling_descendant	
+Pass	add the class 'test' to the element inserted again before previous_sibling_descendant	
+Pass	remove the class 'test' from the element inserted again before previous_sibling_descendant	
+Pass	remove element div before previous_sibling_descendant	
+Pass	insert element div[test_attr] before previous_sibling_descendant	
+Pass	remove element div[test_attr] before previous_sibling_descendant	
+Pass	insert element div.test before subject	
+Pass	remove the class 'test' from the element inserted before subject	
+Pass	add the class 'test' again to the element inserted before subject	
+Pass	remove element div.test before subject	
+Pass	insert element div before subject	
+Pass	add the class 'test' to the element inserted again before subject	
+Pass	remove the class 'test' from the element inserted again before subject	
+Pass	remove element div before subject	
+Pass	insert element div[test_attr] before subject	
+Pass	remove element div[test_attr] before subject	
+Pass	insert element div.test before next_sibling	
+Pass	remove the class 'test' from the element inserted before next_sibling	
+Pass	add the class 'test' again to the element inserted before next_sibling	
+Pass	remove element div.test before next_sibling	
+Pass	insert element div before next_sibling	
+Pass	add the class 'test' to the element inserted again before next_sibling	
+Pass	remove the class 'test' from the element inserted again before next_sibling	
+Pass	remove element div before next_sibling	
+Pass	insert element div[test_attr] before next_sibling	
+Pass	remove element div[test_attr] before next_sibling	
+Pass	insert element div.test before next_sibling_child	
+Pass	remove the class 'test' from the element inserted before next_sibling_child	
+Pass	add the class 'test' again to the element inserted before next_sibling_child	
+Pass	remove element div.test before next_sibling_child	
+Pass	insert element div before next_sibling_child	
+Pass	add the class 'test' to the element inserted again before next_sibling_child	
+Pass	remove the class 'test' from the element inserted again before next_sibling_child	
+Pass	remove element div before next_sibling_child	
+Pass	insert element div[test_attr] before next_sibling_child	
+Pass	remove element div[test_attr] before next_sibling_child	
+Pass	insert element div.test before next_sibling_descendant	
+Pass	remove the class 'test' from the element inserted before next_sibling_descendant	
+Pass	add the class 'test' again to the element inserted before next_sibling_descendant	
+Pass	remove element div.test before next_sibling_descendant	
+Pass	insert element div before next_sibling_descendant	
+Pass	add the class 'test' to the element inserted again before next_sibling_descendant	
+Pass	remove the class 'test' from the element inserted again before next_sibling_descendant	
+Pass	remove element div before next_sibling_descendant	
+Pass	insert element div[test_attr] before next_sibling_descendant	
+Pass	remove element div[test_attr] before next_sibling_descendant	
+Pass	insert element div.test after previous_sibling	
+Pass	remove the class 'test' from the element inserted after previous_sibling	
+Pass	add the class 'test' again to the element inserted after previous_sibling	
+Pass	remove element div.test after previous_sibling	
+Pass	insert element div after previous_sibling	
+Pass	add the class 'test' to the element inserted again after previous_sibling	
+Pass	remove the class 'test' from the element inserted again after previous_sibling	
+Pass	remove element div after previous_sibling	
+Pass	insert element div[test_attr] after previous_sibling	
+Pass	remove element div[test_attr] after previous_sibling	
+Pass	insert element div.test after previous_sibling_child	
+Pass	remove the class 'test' from the element inserted after previous_sibling_child	
+Pass	add the class 'test' again to the element inserted after previous_sibling_child	
+Pass	remove element div.test after previous_sibling_child	
+Pass	insert element div after previous_sibling_child	
+Pass	add the class 'test' to the element inserted again after previous_sibling_child	
+Pass	remove the class 'test' from the element inserted again after previous_sibling_child	
+Pass	remove element div after previous_sibling_child	
+Pass	insert element div[test_attr] after previous_sibling_child	
+Pass	remove element div[test_attr] after previous_sibling_child	
+Pass	insert element div.test after previous_sibling_descendant	
+Pass	remove the class 'test' from the element inserted after previous_sibling_descendant	
+Pass	add the class 'test' again to the element inserted after previous_sibling_descendant	
+Pass	remove element div.test after previous_sibling_descendant	
+Pass	insert element div after previous_sibling_descendant	
+Pass	add the class 'test' to the element inserted again after previous_sibling_descendant	
+Pass	remove the class 'test' from the element inserted again after previous_sibling_descendant	
+Pass	remove element div after previous_sibling_descendant	
+Pass	insert element div[test_attr] after previous_sibling_descendant	
+Pass	remove element div[test_attr] after previous_sibling_descendant	
+Pass	insert element div.test after subject	
+Pass	remove the class 'test' from the element inserted after subject	
+Pass	add the class 'test' again to the element inserted after subject	
+Pass	remove element div.test after subject	
+Pass	insert element div after subject	
+Pass	add the class 'test' to the element inserted again after subject	
+Pass	remove the class 'test' from the element inserted again after subject	
+Pass	remove element div after subject	
+Pass	insert element div[test_attr] after subject	
+Pass	remove element div[test_attr] after subject	
+Pass	insert element div.test after next_sibling	
+Pass	remove the class 'test' from the element inserted after next_sibling	
+Pass	add the class 'test' again to the element inserted after next_sibling	
+Pass	remove element div.test after next_sibling	
+Pass	insert element div after next_sibling	
+Pass	add the class 'test' to the element inserted again after next_sibling	
+Pass	remove the class 'test' from the element inserted again after next_sibling	
+Pass	remove element div after next_sibling	
+Pass	insert element div[test_attr] after next_sibling	
+Pass	remove element div[test_attr] after next_sibling	
+Pass	insert element div.test after next_sibling_child	
+Pass	remove the class 'test' from the element inserted after next_sibling_child	
+Pass	add the class 'test' again to the element inserted after next_sibling_child	
+Pass	remove element div.test after next_sibling_child	
+Pass	insert element div after next_sibling_child	
+Pass	add the class 'test' to the element inserted again after next_sibling_child	
+Pass	remove the class 'test' from the element inserted again after next_sibling_child	
+Pass	remove element div after next_sibling_child	
+Pass	insert element div[test_attr] after next_sibling_child	
+Pass	remove element div[test_attr] after next_sibling_child	
+Pass	insert element div.test after next_sibling_descendant	
+Pass	remove the class 'test' from the element inserted after next_sibling_descendant	
+Pass	add the class 'test' again to the element inserted after next_sibling_descendant	
+Pass	remove element div.test after next_sibling_descendant	
+Pass	insert element div after next_sibling_descendant	
+Pass	add the class 'test' to the element inserted again after next_sibling_descendant	
+Pass	remove the class 'test' from the element inserted again after next_sibling_descendant	
+Pass	remove element div after next_sibling_descendant	
+Pass	insert element div[test_attr] after next_sibling_descendant	
+Pass	remove element div[test_attr] after next_sibling_descendant	
+Pass	insert tree div>div.test before previous_sibling	
+Pass	remove the class 'test' from the element in the tree inserted before previous_sibling	
+Pass	add the class 'test' again to the element in the tree inserted before previous_sibling	
+Pass	remove tree div>div.test before previous_sibling	
+Pass	insert tree div>div before previous_sibling	
+Pass	add the class 'test' to the element in the tree inserted again before previous_sibling	
+Pass	remove the class 'test' from the element in the tree inserted again before previous_sibling	
+Pass	remove tree div>div before previous_sibling	
+Pass	insert element div>div[test_attr] before previous_sibling	
+Pass	remove element div>div[test_attr] before previous_sibling	
+Pass	insert tree div>div.test before previous_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted before previous_sibling_child	
+Pass	add the class 'test' again to the element in the tree inserted before previous_sibling_child	
+Pass	remove tree div>div.test before previous_sibling_child	
+Pass	insert tree div>div before previous_sibling_child	
+Pass	add the class 'test' to the element in the tree inserted again before previous_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted again before previous_sibling_child	
+Pass	remove tree div>div before previous_sibling_child	
+Pass	insert element div>div[test_attr] before previous_sibling_child	
+Pass	remove element div>div[test_attr] before previous_sibling_child	
+Pass	insert tree div>div.test before previous_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted before previous_sibling_descendant	
+Pass	add the class 'test' again to the element in the tree inserted before previous_sibling_descendant	
+Pass	remove tree div>div.test before previous_sibling_descendant	
+Pass	insert tree div>div before previous_sibling_descendant	
+Pass	add the class 'test' to the element in the tree inserted again before previous_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted again before previous_sibling_descendant	
+Pass	remove tree div>div before previous_sibling_descendant	
+Pass	insert element div>div[test_attr] before previous_sibling_descendant	
+Pass	remove element div>div[test_attr] before previous_sibling_descendant	
+Pass	insert tree div>div.test before subject	
+Pass	remove the class 'test' from the element in the tree inserted before subject	
+Pass	add the class 'test' again to the element in the tree inserted before subject	
+Pass	remove tree div>div.test before subject	
+Pass	insert tree div>div before subject	
+Pass	add the class 'test' to the element in the tree inserted again before subject	
+Pass	remove the class 'test' from the element in the tree inserted again before subject	
+Pass	remove tree div>div before subject	
+Pass	insert element div>div[test_attr] before subject	
+Pass	remove element div>div[test_attr] before subject	
+Pass	insert tree div>div.test before next_sibling	
+Pass	remove the class 'test' from the element in the tree inserted before next_sibling	
+Pass	add the class 'test' again to the element in the tree inserted before next_sibling	
+Pass	remove tree div>div.test before next_sibling	
+Pass	insert tree div>div before next_sibling	
+Pass	add the class 'test' to the element in the tree inserted again before next_sibling	
+Pass	remove the class 'test' from the element in the tree inserted again before next_sibling	
+Pass	remove tree div>div before next_sibling	
+Pass	insert element div>div[test_attr] before next_sibling	
+Pass	remove element div>div[test_attr] before next_sibling	
+Pass	insert tree div>div.test before next_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted before next_sibling_child	
+Pass	add the class 'test' again to the element in the tree inserted before next_sibling_child	
+Pass	remove tree div>div.test before next_sibling_child	
+Pass	insert tree div>div before next_sibling_child	
+Pass	add the class 'test' to the element in the tree inserted again before next_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted again before next_sibling_child	
+Pass	remove tree div>div before next_sibling_child	
+Pass	insert element div>div[test_attr] before next_sibling_child	
+Pass	remove element div>div[test_attr] before next_sibling_child	
+Pass	insert tree div>div.test before next_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted before next_sibling_descendant	
+Pass	add the class 'test' again to the element in the tree inserted before next_sibling_descendant	
+Pass	remove tree div>div.test before next_sibling_descendant	
+Pass	insert tree div>div before next_sibling_descendant	
+Pass	add the class 'test' to the element in the tree inserted again before next_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted again before next_sibling_descendant	
+Pass	remove tree div>div before next_sibling_descendant	
+Pass	insert element div>div[test_attr] before next_sibling_descendant	
+Pass	remove element div>div[test_attr] before next_sibling_descendant	
+Pass	insert tree div>div.test after previous_sibling	
+Pass	remove the class 'test' from the element in the tree inserted after previous_sibling	
+Pass	add the class 'test' again to the element in the tree inserted after previous_sibling	
+Pass	remove tree div>div.test after previous_sibling	
+Pass	insert tree div>div after previous_sibling	
+Pass	add the class 'test' to the element in the tree inserted again after previous_sibling	
+Pass	remove the class 'test' from the element in the tree inserted again after previous_sibling	
+Pass	remove tree div>div after previous_sibling	
+Pass	insert element div>div[test_attr] after previous_sibling	
+Pass	remove element div>div[test_attr] after previous_sibling	
+Pass	insert tree div>div.test after previous_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted after previous_sibling_child	
+Pass	add the class 'test' again to the element in the tree inserted after previous_sibling_child	
+Pass	remove tree div>div.test after previous_sibling_child	
+Pass	insert tree div>div after previous_sibling_child	
+Pass	add the class 'test' to the element in the tree inserted again after previous_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted again after previous_sibling_child	
+Pass	remove tree div>div after previous_sibling_child	
+Pass	insert element div>div[test_attr] after previous_sibling_child	
+Pass	remove element div>div[test_attr] after previous_sibling_child	
+Pass	insert tree div>div.test after previous_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted after previous_sibling_descendant	
+Pass	add the class 'test' again to the element in the tree inserted after previous_sibling_descendant	
+Pass	remove tree div>div.test after previous_sibling_descendant	
+Pass	insert tree div>div after previous_sibling_descendant	
+Pass	add the class 'test' to the element in the tree inserted again after previous_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted again after previous_sibling_descendant	
+Pass	remove tree div>div after previous_sibling_descendant	
+Pass	insert element div>div[test_attr] after previous_sibling_descendant	
+Pass	remove element div>div[test_attr] after previous_sibling_descendant	
+Pass	insert tree div>div.test after subject	
+Pass	remove the class 'test' from the element in the tree inserted after subject	
+Pass	add the class 'test' again to the element in the tree inserted after subject	
+Pass	remove tree div>div.test after subject	
+Pass	insert tree div>div after subject	
+Pass	add the class 'test' to the element in the tree inserted again after subject	
+Pass	remove the class 'test' from the element in the tree inserted again after subject	
+Pass	remove tree div>div after subject	
+Pass	insert element div>div[test_attr] after subject	
+Pass	remove element div>div[test_attr] after subject	
+Pass	insert tree div>div.test after next_sibling	
+Pass	remove the class 'test' from the element in the tree inserted after next_sibling	
+Pass	add the class 'test' again to the element in the tree inserted after next_sibling	
+Pass	remove tree div>div.test after next_sibling	
+Pass	insert tree div>div after next_sibling	
+Pass	add the class 'test' to the element in the tree inserted again after next_sibling	
+Pass	remove the class 'test' from the element in the tree inserted again after next_sibling	
+Pass	remove tree div>div after next_sibling	
+Pass	insert element div>div[test_attr] after next_sibling	
+Pass	remove element div>div[test_attr] after next_sibling	
+Pass	insert tree div>div.test after next_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted after next_sibling_child	
+Pass	add the class 'test' again to the element in the tree inserted after next_sibling_child	
+Pass	remove tree div>div.test after next_sibling_child	
+Pass	insert tree div>div after next_sibling_child	
+Pass	add the class 'test' to the element in the tree inserted again after next_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted again after next_sibling_child	
+Pass	remove tree div>div after next_sibling_child	
+Pass	insert element div>div[test_attr] after next_sibling_child	
+Pass	remove element div>div[test_attr] after next_sibling_child	
+Pass	insert tree div>div.test after next_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted after next_sibling_descendant	
+Pass	add the class 'test' again to the element in the tree inserted after next_sibling_descendant	
+Pass	remove tree div>div.test after next_sibling_descendant	
+Pass	insert tree div>div after next_sibling_descendant	
+Pass	add the class 'test' to the element in the tree inserted again after next_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted again after next_sibling_descendant	
+Pass	remove tree div>div after next_sibling_descendant	
+Pass	insert element div>div[test_attr] after next_sibling_descendant	
+Pass	remove element div>div[test_attr] after next_sibling_descendant	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-in-ancestor-position.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-in-ancestor-position.txt
new file mode 100644
index 000000000000..ca438a8168fb
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-in-ancestor-position.txt
@@ -0,0 +1,347 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 337 tests
+
+337 Pass
+Details
+Result	Test Name	MessagePass	Initial color	
+Pass	add .test to subject_ancestor	
+Pass	remove .test from subject_ancestor	
+Pass	add .test to subject_parent	
+Pass	remove .test from subject_parent	
+Pass	add .test to subject	
+Pass	remove .test from subject	
+Pass	add .test to subject_child	
+Pass	remove .test from subject_child	
+Pass	add .test to subject_descendant	
+Pass	remove .test from subject_descendant	
+Pass	add .test to next_sibling	
+Pass	remove .test from next_sibling	
+Pass	add .test to next_sibling_child	
+Pass	remove .test from next_sibling_child	
+Pass	add .test to next_sibling_descendant	
+Pass	remove .test from next_sibling_descendant	
+Pass	insert element div.test before subject_ancestor	
+Pass	remove the class 'test' from the element inserted before subject_ancestor	
+Pass	add the class 'test' again to the element inserted before subject_ancestor	
+Pass	remove element div.test before subject_ancestor	
+Pass	insert element div before subject_ancestor	
+Pass	add the class 'test' to the element inserted again before subject_ancestor	
+Pass	remove the class 'test' from the element inserted again before subject_ancestor	
+Pass	remove element div before subject_ancestor	
+Pass	insert element div[test_attr] before subject_ancestor	
+Pass	remove element div[test_attr] before subject_ancestor	
+Pass	insert element div.test before subject_parent	
+Pass	remove the class 'test' from the element inserted before subject_parent	
+Pass	add the class 'test' again to the element inserted before subject_parent	
+Pass	remove element div.test before subject_parent	
+Pass	insert element div before subject_parent	
+Pass	add the class 'test' to the element inserted again before subject_parent	
+Pass	remove the class 'test' from the element inserted again before subject_parent	
+Pass	remove element div before subject_parent	
+Pass	insert element div[test_attr] before subject_parent	
+Pass	remove element div[test_attr] before subject_parent	
+Pass	insert element div.test before subject	
+Pass	remove the class 'test' from the element inserted before subject	
+Pass	add the class 'test' again to the element inserted before subject	
+Pass	remove element div.test before subject	
+Pass	insert element div before subject	
+Pass	add the class 'test' to the element inserted again before subject	
+Pass	remove the class 'test' from the element inserted again before subject	
+Pass	remove element div before subject	
+Pass	insert element div[test_attr] before subject	
+Pass	remove element div[test_attr] before subject	
+Pass	insert element div.test before subject_child	
+Pass	remove the class 'test' from the element inserted before subject_child	
+Pass	add the class 'test' again to the element inserted before subject_child	
+Pass	remove element div.test before subject_child	
+Pass	insert element div before subject_child	
+Pass	add the class 'test' to the element inserted again before subject_child	
+Pass	remove the class 'test' from the element inserted again before subject_child	
+Pass	remove element div before subject_child	
+Pass	insert element div[test_attr] before subject_child	
+Pass	remove element div[test_attr] before subject_child	
+Pass	insert element div.test before subject_descendant	
+Pass	remove the class 'test' from the element inserted before subject_descendant	
+Pass	add the class 'test' again to the element inserted before subject_descendant	
+Pass	remove element div.test before subject_descendant	
+Pass	insert element div before subject_descendant	
+Pass	add the class 'test' to the element inserted again before subject_descendant	
+Pass	remove the class 'test' from the element inserted again before subject_descendant	
+Pass	remove element div before subject_descendant	
+Pass	insert element div[test_attr] before subject_descendant	
+Pass	remove element div[test_attr] before subject_descendant	
+Pass	insert element div.test before next_sibling	
+Pass	remove the class 'test' from the element inserted before next_sibling	
+Pass	add the class 'test' again to the element inserted before next_sibling	
+Pass	remove element div.test before next_sibling	
+Pass	insert element div before next_sibling	
+Pass	add the class 'test' to the element inserted again before next_sibling	
+Pass	remove the class 'test' from the element inserted again before next_sibling	
+Pass	remove element div before next_sibling	
+Pass	insert element div[test_attr] before next_sibling	
+Pass	remove element div[test_attr] before next_sibling	
+Pass	insert element div.test before next_sibling_child	
+Pass	remove the class 'test' from the element inserted before next_sibling_child	
+Pass	add the class 'test' again to the element inserted before next_sibling_child	
+Pass	remove element div.test before next_sibling_child	
+Pass	insert element div before next_sibling_child	
+Pass	add the class 'test' to the element inserted again before next_sibling_child	
+Pass	remove the class 'test' from the element inserted again before next_sibling_child	
+Pass	remove element div before next_sibling_child	
+Pass	insert element div[test_attr] before next_sibling_child	
+Pass	remove element div[test_attr] before next_sibling_child	
+Pass	insert element div.test before next_sibling_descendant	
+Pass	remove the class 'test' from the element inserted before next_sibling_descendant	
+Pass	add the class 'test' again to the element inserted before next_sibling_descendant	
+Pass	remove element div.test before next_sibling_descendant	
+Pass	insert element div before next_sibling_descendant	
+Pass	add the class 'test' to the element inserted again before next_sibling_descendant	
+Pass	remove the class 'test' from the element inserted again before next_sibling_descendant	
+Pass	remove element div before next_sibling_descendant	
+Pass	insert element div[test_attr] before next_sibling_descendant	
+Pass	remove element div[test_attr] before next_sibling_descendant	
+Pass	insert element div.test after subject_ancestor	
+Pass	remove the class 'test' from the element inserted after subject_ancestor	
+Pass	add the class 'test' again to the element inserted after subject_ancestor	
+Pass	remove element div.test after subject_ancestor	
+Pass	insert element div after subject_ancestor	
+Pass	add the class 'test' to the element inserted again after subject_ancestor	
+Pass	remove the class 'test' from the element inserted again after subject_ancestor	
+Pass	remove element div after subject_ancestor	
+Pass	insert element div[test_attr] after subject_ancestor	
+Pass	remove element div[test_attr] after subject_ancestor	
+Pass	insert element div.test after subject_parent	
+Pass	remove the class 'test' from the element inserted after subject_parent	
+Pass	add the class 'test' again to the element inserted after subject_parent	
+Pass	remove element div.test after subject_parent	
+Pass	insert element div after subject_parent	
+Pass	add the class 'test' to the element inserted again after subject_parent	
+Pass	remove the class 'test' from the element inserted again after subject_parent	
+Pass	remove element div after subject_parent	
+Pass	insert element div[test_attr] after subject_parent	
+Pass	remove element div[test_attr] after subject_parent	
+Pass	insert element div.test after subject	
+Pass	remove the class 'test' from the element inserted after subject	
+Pass	add the class 'test' again to the element inserted after subject	
+Pass	remove element div.test after subject	
+Pass	insert element div after subject	
+Pass	add the class 'test' to the element inserted again after subject	
+Pass	remove the class 'test' from the element inserted again after subject	
+Pass	remove element div after subject	
+Pass	insert element div[test_attr] after subject	
+Pass	remove element div[test_attr] after subject	
+Pass	insert element div.test after subject_child	
+Pass	remove the class 'test' from the element inserted after subject_child	
+Pass	add the class 'test' again to the element inserted after subject_child	
+Pass	remove element div.test after subject_child	
+Pass	insert element div after subject_child	
+Pass	add the class 'test' to the element inserted again after subject_child	
+Pass	remove the class 'test' from the element inserted again after subject_child	
+Pass	remove element div after subject_child	
+Pass	insert element div[test_attr] after subject_child	
+Pass	remove element div[test_attr] after subject_child	
+Pass	insert element div.test after subject_descendant	
+Pass	remove the class 'test' from the element inserted after subject_descendant	
+Pass	add the class 'test' again to the element inserted after subject_descendant	
+Pass	remove element div.test after subject_descendant	
+Pass	insert element div after subject_descendant	
+Pass	add the class 'test' to the element inserted again after subject_descendant	
+Pass	remove the class 'test' from the element inserted again after subject_descendant	
+Pass	remove element div after subject_descendant	
+Pass	insert element div[test_attr] after subject_descendant	
+Pass	remove element div[test_attr] after subject_descendant	
+Pass	insert element div.test after next_sibling	
+Pass	remove the class 'test' from the element inserted after next_sibling	
+Pass	add the class 'test' again to the element inserted after next_sibling	
+Pass	remove element div.test after next_sibling	
+Pass	insert element div after next_sibling	
+Pass	add the class 'test' to the element inserted again after next_sibling	
+Pass	remove the class 'test' from the element inserted again after next_sibling	
+Pass	remove element div after next_sibling	
+Pass	insert element div[test_attr] after next_sibling	
+Pass	remove element div[test_attr] after next_sibling	
+Pass	insert element div.test after next_sibling_child	
+Pass	remove the class 'test' from the element inserted after next_sibling_child	
+Pass	add the class 'test' again to the element inserted after next_sibling_child	
+Pass	remove element div.test after next_sibling_child	
+Pass	insert element div after next_sibling_child	
+Pass	add the class 'test' to the element inserted again after next_sibling_child	
+Pass	remove the class 'test' from the element inserted again after next_sibling_child	
+Pass	remove element div after next_sibling_child	
+Pass	insert element div[test_attr] after next_sibling_child	
+Pass	remove element div[test_attr] after next_sibling_child	
+Pass	insert element div.test after next_sibling_descendant	
+Pass	remove the class 'test' from the element inserted after next_sibling_descendant	
+Pass	add the class 'test' again to the element inserted after next_sibling_descendant	
+Pass	remove element div.test after next_sibling_descendant	
+Pass	insert element div after next_sibling_descendant	
+Pass	add the class 'test' to the element inserted again after next_sibling_descendant	
+Pass	remove the class 'test' from the element inserted again after next_sibling_descendant	
+Pass	remove element div after next_sibling_descendant	
+Pass	insert element div[test_attr] after next_sibling_descendant	
+Pass	remove element div[test_attr] after next_sibling_descendant	
+Pass	insert tree div>div.test before subject_ancestor	
+Pass	remove the class 'test' from the element in the tree inserted before subject_ancestor	
+Pass	add the class 'test' again to the element in the tree inserted before subject_ancestor	
+Pass	remove tree div>div.test before subject_ancestor	
+Pass	insert tree div>div before subject_ancestor	
+Pass	add the class 'test' to the element in the tree inserted again before subject_ancestor	
+Pass	remove the class 'test' from the element in the tree inserted again before subject_ancestor	
+Pass	remove tree div>div before subject_ancestor	
+Pass	insert element div>div[test_attr] before subject_ancestor	
+Pass	remove element div>div[test_attr] before subject_ancestor	
+Pass	insert tree div>div.test before subject_parent	
+Pass	remove the class 'test' from the element in the tree inserted before subject_parent	
+Pass	add the class 'test' again to the element in the tree inserted before subject_parent	
+Pass	remove tree div>div.test before subject_parent	
+Pass	insert tree div>div before subject_parent	
+Pass	add the class 'test' to the element in the tree inserted again before subject_parent	
+Pass	remove the class 'test' from the element in the tree inserted again before subject_parent	
+Pass	remove tree div>div before subject_parent	
+Pass	insert element div>div[test_attr] before subject_parent	
+Pass	remove element div>div[test_attr] before subject_parent	
+Pass	insert tree div>div.test before subject	
+Pass	remove the class 'test' from the element in the tree inserted before subject	
+Pass	add the class 'test' again to the element in the tree inserted before subject	
+Pass	remove tree div>div.test before subject	
+Pass	insert tree div>div before subject	
+Pass	add the class 'test' to the element in the tree inserted again before subject	
+Pass	remove the class 'test' from the element in the tree inserted again before subject	
+Pass	remove tree div>div before subject	
+Pass	insert element div>div[test_attr] before subject	
+Pass	remove element div>div[test_attr] before subject	
+Pass	insert tree div>div.test before subject_child	
+Pass	remove the class 'test' from the element in the tree inserted before subject_child	
+Pass	add the class 'test' again to the element in the tree inserted before subject_child	
+Pass	remove tree div>div.test before subject_child	
+Pass	insert tree div>div before subject_child	
+Pass	add the class 'test' to the element in the tree inserted again before subject_child	
+Pass	remove the class 'test' from the element in the tree inserted again before subject_child	
+Pass	remove tree div>div before subject_child	
+Pass	insert element div>div[test_attr] before subject_child	
+Pass	remove element div>div[test_attr] before subject_child	
+Pass	insert tree div>div.test before subject_descendant	
+Pass	remove the class 'test' from the element in the tree inserted before subject_descendant	
+Pass	add the class 'test' again to the element in the tree inserted before subject_descendant	
+Pass	remove tree div>div.test before subject_descendant	
+Pass	insert tree div>div before subject_descendant	
+Pass	add the class 'test' to the element in the tree inserted again before subject_descendant	
+Pass	remove the class 'test' from the element in the tree inserted again before subject_descendant	
+Pass	remove tree div>div before subject_descendant	
+Pass	insert element div>div[test_attr] before subject_descendant	
+Pass	remove element div>div[test_attr] before subject_descendant	
+Pass	insert tree div>div.test before next_sibling	
+Pass	remove the class 'test' from the element in the tree inserted before next_sibling	
+Pass	add the class 'test' again to the element in the tree inserted before next_sibling	
+Pass	remove tree div>div.test before next_sibling	
+Pass	insert tree div>div before next_sibling	
+Pass	add the class 'test' to the element in the tree inserted again before next_sibling	
+Pass	remove the class 'test' from the element in the tree inserted again before next_sibling	
+Pass	remove tree div>div before next_sibling	
+Pass	insert element div>div[test_attr] before next_sibling	
+Pass	remove element div>div[test_attr] before next_sibling	
+Pass	insert tree div>div.test before next_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted before next_sibling_child	
+Pass	add the class 'test' again to the element in the tree inserted before next_sibling_child	
+Pass	remove tree div>div.test before next_sibling_child	
+Pass	insert tree div>div before next_sibling_child	
+Pass	add the class 'test' to the element in the tree inserted again before next_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted again before next_sibling_child	
+Pass	remove tree div>div before next_sibling_child	
+Pass	insert element div>div[test_attr] before next_sibling_child	
+Pass	remove element div>div[test_attr] before next_sibling_child	
+Pass	insert tree div>div.test before next_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted before next_sibling_descendant	
+Pass	add the class 'test' again to the element in the tree inserted before next_sibling_descendant	
+Pass	remove tree div>div.test before next_sibling_descendant	
+Pass	insert tree div>div before next_sibling_descendant	
+Pass	add the class 'test' to the element in the tree inserted again before next_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted again before next_sibling_descendant	
+Pass	remove tree div>div before next_sibling_descendant	
+Pass	insert element div>div[test_attr] before next_sibling_descendant	
+Pass	remove element div>div[test_attr] before next_sibling_descendant	
+Pass	insert tree div>div.test after subject_ancestor	
+Pass	remove the class 'test' from the element in the tree inserted after subject_ancestor	
+Pass	add the class 'test' again to the element in the tree inserted after subject_ancestor	
+Pass	remove tree div>div.test after subject_ancestor	
+Pass	insert tree div>div after subject_ancestor	
+Pass	add the class 'test' to the element in the tree inserted again after subject_ancestor	
+Pass	remove the class 'test' from the element in the tree inserted again after subject_ancestor	
+Pass	remove tree div>div after subject_ancestor	
+Pass	insert element div>div[test_attr] after subject_ancestor	
+Pass	remove element div>div[test_attr] after subject_ancestor	
+Pass	insert tree div>div.test after subject_parent	
+Pass	remove the class 'test' from the element in the tree inserted after subject_parent	
+Pass	add the class 'test' again to the element in the tree inserted after subject_parent	
+Pass	remove tree div>div.test after subject_parent	
+Pass	insert tree div>div after subject_parent	
+Pass	add the class 'test' to the element in the tree inserted again after subject_parent	
+Pass	remove the class 'test' from the element in the tree inserted again after subject_parent	
+Pass	remove tree div>div after subject_parent	
+Pass	insert element div>div[test_attr] after subject_parent	
+Pass	remove element div>div[test_attr] after subject_parent	
+Pass	insert tree div>div.test after subject	
+Pass	remove the class 'test' from the element in the tree inserted after subject	
+Pass	add the class 'test' again to the element in the tree inserted after subject	
+Pass	remove tree div>div.test after subject	
+Pass	insert tree div>div after subject	
+Pass	add the class 'test' to the element in the tree inserted again after subject	
+Pass	remove the class 'test' from the element in the tree inserted again after subject	
+Pass	remove tree div>div after subject	
+Pass	insert element div>div[test_attr] after subject	
+Pass	remove element div>div[test_attr] after subject	
+Pass	insert tree div>div.test after subject_child	
+Pass	remove the class 'test' from the element in the tree inserted after subject_child	
+Pass	add the class 'test' again to the element in the tree inserted after subject_child	
+Pass	remove tree div>div.test after subject_child	
+Pass	insert tree div>div after subject_child	
+Pass	add the class 'test' to the element in the tree inserted again after subject_child	
+Pass	remove the class 'test' from the element in the tree inserted again after subject_child	
+Pass	remove tree div>div after subject_child	
+Pass	insert element div>div[test_attr] after subject_child	
+Pass	remove element div>div[test_attr] after subject_child	
+Pass	insert tree div>div.test after subject_descendant	
+Pass	remove the class 'test' from the element in the tree inserted after subject_descendant	
+Pass	add the class 'test' again to the element in the tree inserted after subject_descendant	
+Pass	remove tree div>div.test after subject_descendant	
+Pass	insert tree div>div after subject_descendant	
+Pass	add the class 'test' to the element in the tree inserted again after subject_descendant	
+Pass	remove the class 'test' from the element in the tree inserted again after subject_descendant	
+Pass	remove tree div>div after subject_descendant	
+Pass	insert element div>div[test_attr] after subject_descendant	
+Pass	remove element div>div[test_attr] after subject_descendant	
+Pass	insert tree div>div.test after next_sibling	
+Pass	remove the class 'test' from the element in the tree inserted after next_sibling	
+Pass	add the class 'test' again to the element in the tree inserted after next_sibling	
+Pass	remove tree div>div.test after next_sibling	
+Pass	insert tree div>div after next_sibling	
+Pass	add the class 'test' to the element in the tree inserted again after next_sibling	
+Pass	remove the class 'test' from the element in the tree inserted again after next_sibling	
+Pass	remove tree div>div after next_sibling	
+Pass	insert element div>div[test_attr] after next_sibling	
+Pass	remove element div>div[test_attr] after next_sibling	
+Pass	insert tree div>div.test after next_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted after next_sibling_child	
+Pass	add the class 'test' again to the element in the tree inserted after next_sibling_child	
+Pass	remove tree div>div.test after next_sibling_child	
+Pass	insert tree div>div after next_sibling_child	
+Pass	add the class 'test' to the element in the tree inserted again after next_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted again after next_sibling_child	
+Pass	remove tree div>div after next_sibling_child	
+Pass	insert element div>div[test_attr] after next_sibling_child	
+Pass	remove element div>div[test_attr] after next_sibling_child	
+Pass	insert tree div>div.test after next_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted after next_sibling_descendant	
+Pass	add the class 'test' again to the element in the tree inserted after next_sibling_descendant	
+Pass	remove tree div>div.test after next_sibling_descendant	
+Pass	insert tree div>div after next_sibling_descendant	
+Pass	add the class 'test' to the element in the tree inserted again after next_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted again after next_sibling_descendant	
+Pass	remove tree div>div after next_sibling_descendant	
+Pass	insert element div>div[test_attr] after next_sibling_descendant	
+Pass	remove element div>div[test_attr] after next_sibling_descendant	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-in-parent-position.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-in-parent-position.txt
new file mode 100644
index 000000000000..79b23409b3d0
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-in-parent-position.txt
@@ -0,0 +1,221 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 211 tests
+
+211 Pass
+Details
+Result	Test Name	MessagePass	Initial color	
+Pass	add .test to subject_ancestor	
+Pass	remove .test from subject_ancestor	
+Pass	add .test to subject_parent	
+Pass	remove .test from subject_parent	
+Pass	add .test to subject	
+Pass	remove .test from subject	
+Pass	add .test to subject_child	
+Pass	remove .test from subject_child	
+Pass	add .test to subject_descendant	
+Pass	remove .test from subject_descendant	
+Pass	insert element div.test before subject_ancestor	
+Pass	remove the class 'test' from the element inserted before subject_ancestor	
+Pass	add the class 'test' again to the element inserted before subject_ancestor	
+Pass	remove element div.test before subject_ancestor	
+Pass	insert element div before subject_ancestor	
+Pass	add the class 'test' to the element inserted again before subject_ancestor	
+Pass	remove the class 'test' from the element inserted again before subject_ancestor	
+Pass	remove element div before subject_ancestor	
+Pass	insert element div[test_attr] before subject_ancestor	
+Pass	remove element div[test_attr] before subject_ancestor	
+Pass	insert element div.test before subject_parent	
+Pass	remove the class 'test' from the element inserted before subject_parent	
+Pass	add the class 'test' again to the element inserted before subject_parent	
+Pass	remove element div.test before subject_parent	
+Pass	insert element div before subject_parent	
+Pass	add the class 'test' to the element inserted again before subject_parent	
+Pass	remove the class 'test' from the element inserted again before subject_parent	
+Pass	remove element div before subject_parent	
+Pass	insert element div[test_attr] before subject_parent	
+Pass	remove element div[test_attr] before subject_parent	
+Pass	insert element div.test before subject	
+Pass	remove the class 'test' from the element inserted before subject	
+Pass	add the class 'test' again to the element inserted before subject	
+Pass	remove element div.test before subject	
+Pass	insert element div before subject	
+Pass	add the class 'test' to the element inserted again before subject	
+Pass	remove the class 'test' from the element inserted again before subject	
+Pass	remove element div before subject	
+Pass	insert element div[test_attr] before subject	
+Pass	remove element div[test_attr] before subject	
+Pass	insert element div.test before subject_child	
+Pass	remove the class 'test' from the element inserted before subject_child	
+Pass	add the class 'test' again to the element inserted before subject_child	
+Pass	remove element div.test before subject_child	
+Pass	insert element div before subject_child	
+Pass	add the class 'test' to the element inserted again before subject_child	
+Pass	remove the class 'test' from the element inserted again before subject_child	
+Pass	remove element div before subject_child	
+Pass	insert element div[test_attr] before subject_child	
+Pass	remove element div[test_attr] before subject_child	
+Pass	insert element div.test before subject_descendant	
+Pass	remove the class 'test' from the element inserted before subject_descendant	
+Pass	add the class 'test' again to the element inserted before subject_descendant	
+Pass	remove element div.test before subject_descendant	
+Pass	insert element div before subject_descendant	
+Pass	add the class 'test' to the element inserted again before subject_descendant	
+Pass	remove the class 'test' from the element inserted again before subject_descendant	
+Pass	remove element div before subject_descendant	
+Pass	insert element div[test_attr] before subject_descendant	
+Pass	remove element div[test_attr] before subject_descendant	
+Pass	insert element div.test after subject_ancestor	
+Pass	remove the class 'test' from the element inserted after subject_ancestor	
+Pass	add the class 'test' again to the element inserted after subject_ancestor	
+Pass	remove element div.test after subject_ancestor	
+Pass	insert element div after subject_ancestor	
+Pass	add the class 'test' to the element inserted again after subject_ancestor	
+Pass	remove the class 'test' from the element inserted again after subject_ancestor	
+Pass	remove element div after subject_ancestor	
+Pass	insert element div[test_attr] after subject_ancestor	
+Pass	remove element div[test_attr] after subject_ancestor	
+Pass	insert element div.test after subject_parent	
+Pass	remove the class 'test' from the element inserted after subject_parent	
+Pass	add the class 'test' again to the element inserted after subject_parent	
+Pass	remove element div.test after subject_parent	
+Pass	insert element div after subject_parent	
+Pass	add the class 'test' to the element inserted again after subject_parent	
+Pass	remove the class 'test' from the element inserted again after subject_parent	
+Pass	remove element div after subject_parent	
+Pass	insert element div[test_attr] after subject_parent	
+Pass	remove element div[test_attr] after subject_parent	
+Pass	insert element div.test after subject	
+Pass	remove the class 'test' from the element inserted after subject	
+Pass	add the class 'test' again to the element inserted after subject	
+Pass	remove element div.test after subject	
+Pass	insert element div after subject	
+Pass	add the class 'test' to the element inserted again after subject	
+Pass	remove the class 'test' from the element inserted again after subject	
+Pass	remove element div after subject	
+Pass	insert element div[test_attr] after subject	
+Pass	remove element div[test_attr] after subject	
+Pass	insert element div.test after subject_child	
+Pass	remove the class 'test' from the element inserted after subject_child	
+Pass	add the class 'test' again to the element inserted after subject_child	
+Pass	remove element div.test after subject_child	
+Pass	insert element div after subject_child	
+Pass	add the class 'test' to the element inserted again after subject_child	
+Pass	remove the class 'test' from the element inserted again after subject_child	
+Pass	remove element div after subject_child	
+Pass	insert element div[test_attr] after subject_child	
+Pass	remove element div[test_attr] after subject_child	
+Pass	insert element div.test after subject_descendant	
+Pass	remove the class 'test' from the element inserted after subject_descendant	
+Pass	add the class 'test' again to the element inserted after subject_descendant	
+Pass	remove element div.test after subject_descendant	
+Pass	insert element div after subject_descendant	
+Pass	add the class 'test' to the element inserted again after subject_descendant	
+Pass	remove the class 'test' from the element inserted again after subject_descendant	
+Pass	remove element div after subject_descendant	
+Pass	insert element div[test_attr] after subject_descendant	
+Pass	remove element div[test_attr] after subject_descendant	
+Pass	insert tree div>div.test before subject_ancestor	
+Pass	remove the class 'test' from the element in the tree inserted before subject_ancestor	
+Pass	add the class 'test' again to the element in the tree inserted before subject_ancestor	
+Pass	remove tree div>div.test before subject_ancestor	
+Pass	insert tree div>div before subject_ancestor	
+Pass	add the class 'test' to the element in the tree inserted again before subject_ancestor	
+Pass	remove the class 'test' from the element in the tree inserted again before subject_ancestor	
+Pass	remove tree div>div before subject_ancestor	
+Pass	insert element div>div[test_attr] before subject_ancestor	
+Pass	remove element div>div[test_attr] before subject_ancestor	
+Pass	insert tree div>div.test before subject_parent	
+Pass	remove the class 'test' from the element in the tree inserted before subject_parent	
+Pass	add the class 'test' again to the element in the tree inserted before subject_parent	
+Pass	remove tree div>div.test before subject_parent	
+Pass	insert tree div>div before subject_parent	
+Pass	add the class 'test' to the element in the tree inserted again before subject_parent	
+Pass	remove the class 'test' from the element in the tree inserted again before subject_parent	
+Pass	remove tree div>div before subject_parent	
+Pass	insert element div>div[test_attr] before subject_parent	
+Pass	remove element div>div[test_attr] before subject_parent	
+Pass	insert tree div>div.test before subject	
+Pass	remove the class 'test' from the element in the tree inserted before subject	
+Pass	add the class 'test' again to the element in the tree inserted before subject	
+Pass	remove tree div>div.test before subject	
+Pass	insert tree div>div before subject	
+Pass	add the class 'test' to the element in the tree inserted again before subject	
+Pass	remove the class 'test' from the element in the tree inserted again before subject	
+Pass	remove tree div>div before subject	
+Pass	insert element div>div[test_attr] before subject	
+Pass	remove element div>div[test_attr] before subject	
+Pass	insert tree div>div.test before subject_child	
+Pass	remove the class 'test' from the element in the tree inserted before subject_child	
+Pass	add the class 'test' again to the element in the tree inserted before subject_child	
+Pass	remove tree div>div.test before subject_child	
+Pass	insert tree div>div before subject_child	
+Pass	add the class 'test' to the element in the tree inserted again before subject_child	
+Pass	remove the class 'test' from the element in the tree inserted again before subject_child	
+Pass	remove tree div>div before subject_child	
+Pass	insert element div>div[test_attr] before subject_child	
+Pass	remove element div>div[test_attr] before subject_child	
+Pass	insert tree div>div.test before subject_descendant	
+Pass	remove the class 'test' from the element in the tree inserted before subject_descendant	
+Pass	add the class 'test' again to the element in the tree inserted before subject_descendant	
+Pass	remove tree div>div.test before subject_descendant	
+Pass	insert tree div>div before subject_descendant	
+Pass	add the class 'test' to the element in the tree inserted again before subject_descendant	
+Pass	remove the class 'test' from the element in the tree inserted again before subject_descendant	
+Pass	remove tree div>div before subject_descendant	
+Pass	insert element div>div[test_attr] before subject_descendant	
+Pass	remove element div>div[test_attr] before subject_descendant	
+Pass	insert tree div>div.test after subject_ancestor	
+Pass	remove the class 'test' from the element in the tree inserted after subject_ancestor	
+Pass	add the class 'test' again to the element in the tree inserted after subject_ancestor	
+Pass	remove tree div>div.test after subject_ancestor	
+Pass	insert tree div>div after subject_ancestor	
+Pass	add the class 'test' to the element in the tree inserted again after subject_ancestor	
+Pass	remove the class 'test' from the element in the tree inserted again after subject_ancestor	
+Pass	remove tree div>div after subject_ancestor	
+Pass	insert element div>div[test_attr] after subject_ancestor	
+Pass	remove element div>div[test_attr] after subject_ancestor	
+Pass	insert tree div>div.test after subject_parent	
+Pass	remove the class 'test' from the element in the tree inserted after subject_parent	
+Pass	add the class 'test' again to the element in the tree inserted after subject_parent	
+Pass	remove tree div>div.test after subject_parent	
+Pass	insert tree div>div after subject_parent	
+Pass	add the class 'test' to the element in the tree inserted again after subject_parent	
+Pass	remove the class 'test' from the element in the tree inserted again after subject_parent	
+Pass	remove tree div>div after subject_parent	
+Pass	insert element div>div[test_attr] after subject_parent	
+Pass	remove element div>div[test_attr] after subject_parent	
+Pass	insert tree div>div.test after subject	
+Pass	remove the class 'test' from the element in the tree inserted after subject	
+Pass	add the class 'test' again to the element in the tree inserted after subject	
+Pass	remove tree div>div.test after subject	
+Pass	insert tree div>div after subject	
+Pass	add the class 'test' to the element in the tree inserted again after subject	
+Pass	remove the class 'test' from the element in the tree inserted again after subject	
+Pass	remove tree div>div after subject	
+Pass	insert element div>div[test_attr] after subject	
+Pass	remove element div>div[test_attr] after subject	
+Pass	insert tree div>div.test after subject_child	
+Pass	remove the class 'test' from the element in the tree inserted after subject_child	
+Pass	add the class 'test' again to the element in the tree inserted after subject_child	
+Pass	remove tree div>div.test after subject_child	
+Pass	insert tree div>div after subject_child	
+Pass	add the class 'test' to the element in the tree inserted again after subject_child	
+Pass	remove the class 'test' from the element in the tree inserted again after subject_child	
+Pass	remove tree div>div after subject_child	
+Pass	insert element div>div[test_attr] after subject_child	
+Pass	remove element div>div[test_attr] after subject_child	
+Pass	insert tree div>div.test after subject_descendant	
+Pass	remove the class 'test' from the element in the tree inserted after subject_descendant	
+Pass	add the class 'test' again to the element in the tree inserted after subject_descendant	
+Pass	remove tree div>div.test after subject_descendant	
+Pass	insert tree div>div after subject_descendant	
+Pass	add the class 'test' to the element in the tree inserted again after subject_descendant	
+Pass	remove the class 'test' from the element in the tree inserted again after subject_descendant	
+Pass	remove tree div>div after subject_descendant	
+Pass	insert element div>div[test_attr] after subject_descendant	
+Pass	remove element div>div[test_attr] after subject_descendant	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-in-sibling-position.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-in-sibling-position.txt
new file mode 100644
index 000000000000..e137e28f07ed
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-in-sibling-position.txt
@@ -0,0 +1,305 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 295 tests
+
+295 Pass
+Details
+Result	Test Name	MessagePass	Initial color	
+Pass	add .test to previous_sibling	
+Pass	remove .test from previous_sibling	
+Pass	add .test to previous_sibling_child	
+Pass	remove .test from previous_sibling_child	
+Pass	add .test to previous_sibling_descendant	
+Pass	remove .test from previous_sibling_descendant	
+Pass	add .test to subject	
+Pass	remove .test from subject	
+Pass	add .test to next_sibling	
+Pass	remove .test from next_sibling	
+Pass	add .test to next_sibling_child	
+Pass	remove .test from next_sibling_child	
+Pass	add .test to next_sibling_descendant	
+Pass	remove .test from next_sibling_descendant	
+Pass	insert element div.test before previous_sibling	
+Pass	remove the class 'test' from the element inserted before previous_sibling	
+Pass	add the class 'test' again to the element inserted before previous_sibling	
+Pass	remove element div.test before previous_sibling	
+Pass	insert element div before previous_sibling	
+Pass	add the class 'test' to the element inserted again before previous_sibling	
+Pass	remove the class 'test' from the element inserted again before previous_sibling	
+Pass	remove element div before previous_sibling	
+Pass	insert element div[test_attr] before previous_sibling	
+Pass	remove element div[test_attr] before previous_sibling	
+Pass	insert element div.test before previous_sibling_child	
+Pass	remove the class 'test' from the element inserted before previous_sibling_child	
+Pass	add the class 'test' again to the element inserted before previous_sibling_child	
+Pass	remove element div.test before previous_sibling_child	
+Pass	insert element div before previous_sibling_child	
+Pass	add the class 'test' to the element inserted again before previous_sibling_child	
+Pass	remove the class 'test' from the element inserted again before previous_sibling_child	
+Pass	remove element div before previous_sibling_child	
+Pass	insert element div[test_attr] before previous_sibling_child	
+Pass	remove element div[test_attr] before previous_sibling_child	
+Pass	insert element div.test before previous_sibling_descendant	
+Pass	remove the class 'test' from the element inserted before previous_sibling_descendant	
+Pass	add the class 'test' again to the element inserted before previous_sibling_descendant	
+Pass	remove element div.test before previous_sibling_descendant	
+Pass	insert element div before previous_sibling_descendant	
+Pass	add the class 'test' to the element inserted again before previous_sibling_descendant	
+Pass	remove the class 'test' from the element inserted again before previous_sibling_descendant	
+Pass	remove element div before previous_sibling_descendant	
+Pass	insert element div[test_attr] before previous_sibling_descendant	
+Pass	remove element div[test_attr] before previous_sibling_descendant	
+Pass	insert element div.test before subject	
+Pass	remove the class 'test' from the element inserted before subject	
+Pass	add the class 'test' again to the element inserted before subject	
+Pass	remove element div.test before subject	
+Pass	insert element div before subject	
+Pass	add the class 'test' to the element inserted again before subject	
+Pass	remove the class 'test' from the element inserted again before subject	
+Pass	remove element div before subject	
+Pass	insert element div[test_attr] before subject	
+Pass	remove element div[test_attr] before subject	
+Pass	insert element div.test before next_sibling	
+Pass	remove the class 'test' from the element inserted before next_sibling	
+Pass	add the class 'test' again to the element inserted before next_sibling	
+Pass	remove element div.test before next_sibling	
+Pass	insert element div before next_sibling	
+Pass	add the class 'test' to the element inserted again before next_sibling	
+Pass	remove the class 'test' from the element inserted again before next_sibling	
+Pass	remove element div before next_sibling	
+Pass	insert element div[test_attr] before next_sibling	
+Pass	remove element div[test_attr] before next_sibling	
+Pass	insert element div.test before next_sibling_child	
+Pass	remove the class 'test' from the element inserted before next_sibling_child	
+Pass	add the class 'test' again to the element inserted before next_sibling_child	
+Pass	remove element div.test before next_sibling_child	
+Pass	insert element div before next_sibling_child	
+Pass	add the class 'test' to the element inserted again before next_sibling_child	
+Pass	remove the class 'test' from the element inserted again before next_sibling_child	
+Pass	remove element div before next_sibling_child	
+Pass	insert element div[test_attr] before next_sibling_child	
+Pass	remove element div[test_attr] before next_sibling_child	
+Pass	insert element div.test before next_sibling_descendant	
+Pass	remove the class 'test' from the element inserted before next_sibling_descendant	
+Pass	add the class 'test' again to the element inserted before next_sibling_descendant	
+Pass	remove element div.test before next_sibling_descendant	
+Pass	insert element div before next_sibling_descendant	
+Pass	add the class 'test' to the element inserted again before next_sibling_descendant	
+Pass	remove the class 'test' from the element inserted again before next_sibling_descendant	
+Pass	remove element div before next_sibling_descendant	
+Pass	insert element div[test_attr] before next_sibling_descendant	
+Pass	remove element div[test_attr] before next_sibling_descendant	
+Pass	insert element div.test after previous_sibling	
+Pass	remove the class 'test' from the element inserted after previous_sibling	
+Pass	add the class 'test' again to the element inserted after previous_sibling	
+Pass	remove element div.test after previous_sibling	
+Pass	insert element div after previous_sibling	
+Pass	add the class 'test' to the element inserted again after previous_sibling	
+Pass	remove the class 'test' from the element inserted again after previous_sibling	
+Pass	remove element div after previous_sibling	
+Pass	insert element div[test_attr] after previous_sibling	
+Pass	remove element div[test_attr] after previous_sibling	
+Pass	insert element div.test after previous_sibling_child	
+Pass	remove the class 'test' from the element inserted after previous_sibling_child	
+Pass	add the class 'test' again to the element inserted after previous_sibling_child	
+Pass	remove element div.test after previous_sibling_child	
+Pass	insert element div after previous_sibling_child	
+Pass	add the class 'test' to the element inserted again after previous_sibling_child	
+Pass	remove the class 'test' from the element inserted again after previous_sibling_child	
+Pass	remove element div after previous_sibling_child	
+Pass	insert element div[test_attr] after previous_sibling_child	
+Pass	remove element div[test_attr] after previous_sibling_child	
+Pass	insert element div.test after previous_sibling_descendant	
+Pass	remove the class 'test' from the element inserted after previous_sibling_descendant	
+Pass	add the class 'test' again to the element inserted after previous_sibling_descendant	
+Pass	remove element div.test after previous_sibling_descendant	
+Pass	insert element div after previous_sibling_descendant	
+Pass	add the class 'test' to the element inserted again after previous_sibling_descendant	
+Pass	remove the class 'test' from the element inserted again after previous_sibling_descendant	
+Pass	remove element div after previous_sibling_descendant	
+Pass	insert element div[test_attr] after previous_sibling_descendant	
+Pass	remove element div[test_attr] after previous_sibling_descendant	
+Pass	insert element div.test after subject	
+Pass	remove the class 'test' from the element inserted after subject	
+Pass	add the class 'test' again to the element inserted after subject	
+Pass	remove element div.test after subject	
+Pass	insert element div after subject	
+Pass	add the class 'test' to the element inserted again after subject	
+Pass	remove the class 'test' from the element inserted again after subject	
+Pass	remove element div after subject	
+Pass	insert element div[test_attr] after subject	
+Pass	remove element div[test_attr] after subject	
+Pass	insert element div.test after next_sibling	
+Pass	remove the class 'test' from the element inserted after next_sibling	
+Pass	add the class 'test' again to the element inserted after next_sibling	
+Pass	remove element div.test after next_sibling	
+Pass	insert element div after next_sibling	
+Pass	add the class 'test' to the element inserted again after next_sibling	
+Pass	remove the class 'test' from the element inserted again after next_sibling	
+Pass	remove element div after next_sibling	
+Pass	insert element div[test_attr] after next_sibling	
+Pass	remove element div[test_attr] after next_sibling	
+Pass	insert element div.test after next_sibling_child	
+Pass	remove the class 'test' from the element inserted after next_sibling_child	
+Pass	add the class 'test' again to the element inserted after next_sibling_child	
+Pass	remove element div.test after next_sibling_child	
+Pass	insert element div after next_sibling_child	
+Pass	add the class 'test' to the element inserted again after next_sibling_child	
+Pass	remove the class 'test' from the element inserted again after next_sibling_child	
+Pass	remove element div after next_sibling_child	
+Pass	insert element div[test_attr] after next_sibling_child	
+Pass	remove element div[test_attr] after next_sibling_child	
+Pass	insert element div.test after next_sibling_descendant	
+Pass	remove the class 'test' from the element inserted after next_sibling_descendant	
+Pass	add the class 'test' again to the element inserted after next_sibling_descendant	
+Pass	remove element div.test after next_sibling_descendant	
+Pass	insert element div after next_sibling_descendant	
+Pass	add the class 'test' to the element inserted again after next_sibling_descendant	
+Pass	remove the class 'test' from the element inserted again after next_sibling_descendant	
+Pass	remove element div after next_sibling_descendant	
+Pass	insert element div[test_attr] after next_sibling_descendant	
+Pass	remove element div[test_attr] after next_sibling_descendant	
+Pass	insert tree div>div.test before previous_sibling	
+Pass	remove the class 'test' from the element in the tree inserted before previous_sibling	
+Pass	add the class 'test' again to the element in the tree inserted before previous_sibling	
+Pass	remove tree div>div.test before previous_sibling	
+Pass	insert tree div>div before previous_sibling	
+Pass	add the class 'test' to the element in the tree inserted again before previous_sibling	
+Pass	remove the class 'test' from the element in the tree inserted again before previous_sibling	
+Pass	remove tree div>div before previous_sibling	
+Pass	insert element div>div[test_attr] before previous_sibling	
+Pass	remove element div>div[test_attr] before previous_sibling	
+Pass	insert tree div>div.test before previous_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted before previous_sibling_child	
+Pass	add the class 'test' again to the element in the tree inserted before previous_sibling_child	
+Pass	remove tree div>div.test before previous_sibling_child	
+Pass	insert tree div>div before previous_sibling_child	
+Pass	add the class 'test' to the element in the tree inserted again before previous_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted again before previous_sibling_child	
+Pass	remove tree div>div before previous_sibling_child	
+Pass	insert element div>div[test_attr] before previous_sibling_child	
+Pass	remove element div>div[test_attr] before previous_sibling_child	
+Pass	insert tree div>div.test before previous_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted before previous_sibling_descendant	
+Pass	add the class 'test' again to the element in the tree inserted before previous_sibling_descendant	
+Pass	remove tree div>div.test before previous_sibling_descendant	
+Pass	insert tree div>div before previous_sibling_descendant	
+Pass	add the class 'test' to the element in the tree inserted again before previous_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted again before previous_sibling_descendant	
+Pass	remove tree div>div before previous_sibling_descendant	
+Pass	insert element div>div[test_attr] before previous_sibling_descendant	
+Pass	remove element div>div[test_attr] before previous_sibling_descendant	
+Pass	insert tree div>div.test before subject	
+Pass	remove the class 'test' from the element in the tree inserted before subject	
+Pass	add the class 'test' again to the element in the tree inserted before subject	
+Pass	remove tree div>div.test before subject	
+Pass	insert tree div>div before subject	
+Pass	add the class 'test' to the element in the tree inserted again before subject	
+Pass	remove the class 'test' from the element in the tree inserted again before subject	
+Pass	remove tree div>div before subject	
+Pass	insert element div>div[test_attr] before subject	
+Pass	remove element div>div[test_attr] before subject	
+Pass	insert tree div>div.test before next_sibling	
+Pass	remove the class 'test' from the element in the tree inserted before next_sibling	
+Pass	add the class 'test' again to the element in the tree inserted before next_sibling	
+Pass	remove tree div>div.test before next_sibling	
+Pass	insert tree div>div before next_sibling	
+Pass	add the class 'test' to the element in the tree inserted again before next_sibling	
+Pass	remove the class 'test' from the element in the tree inserted again before next_sibling	
+Pass	remove tree div>div before next_sibling	
+Pass	insert element div>div[test_attr] before next_sibling	
+Pass	remove element div>div[test_attr] before next_sibling	
+Pass	insert tree div>div.test before next_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted before next_sibling_child	
+Pass	add the class 'test' again to the element in the tree inserted before next_sibling_child	
+Pass	remove tree div>div.test before next_sibling_child	
+Pass	insert tree div>div before next_sibling_child	
+Pass	add the class 'test' to the element in the tree inserted again before next_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted again before next_sibling_child	
+Pass	remove tree div>div before next_sibling_child	
+Pass	insert element div>div[test_attr] before next_sibling_child	
+Pass	remove element div>div[test_attr] before next_sibling_child	
+Pass	insert tree div>div.test before next_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted before next_sibling_descendant	
+Pass	add the class 'test' again to the element in the tree inserted before next_sibling_descendant	
+Pass	remove tree div>div.test before next_sibling_descendant	
+Pass	insert tree div>div before next_sibling_descendant	
+Pass	add the class 'test' to the element in the tree inserted again before next_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted again before next_sibling_descendant	
+Pass	remove tree div>div before next_sibling_descendant	
+Pass	insert element div>div[test_attr] before next_sibling_descendant	
+Pass	remove element div>div[test_attr] before next_sibling_descendant	
+Pass	insert tree div>div.test after previous_sibling	
+Pass	remove the class 'test' from the element in the tree inserted after previous_sibling	
+Pass	add the class 'test' again to the element in the tree inserted after previous_sibling	
+Pass	remove tree div>div.test after previous_sibling	
+Pass	insert tree div>div after previous_sibling	
+Pass	add the class 'test' to the element in the tree inserted again after previous_sibling	
+Pass	remove the class 'test' from the element in the tree inserted again after previous_sibling	
+Pass	remove tree div>div after previous_sibling	
+Pass	insert element div>div[test_attr] after previous_sibling	
+Pass	remove element div>div[test_attr] after previous_sibling	
+Pass	insert tree div>div.test after previous_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted after previous_sibling_child	
+Pass	add the class 'test' again to the element in the tree inserted after previous_sibling_child	
+Pass	remove tree div>div.test after previous_sibling_child	
+Pass	insert tree div>div after previous_sibling_child	
+Pass	add the class 'test' to the element in the tree inserted again after previous_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted again after previous_sibling_child	
+Pass	remove tree div>div after previous_sibling_child	
+Pass	insert element div>div[test_attr] after previous_sibling_child	
+Pass	remove element div>div[test_attr] after previous_sibling_child	
+Pass	insert tree div>div.test after previous_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted after previous_sibling_descendant	
+Pass	add the class 'test' again to the element in the tree inserted after previous_sibling_descendant	
+Pass	remove tree div>div.test after previous_sibling_descendant	
+Pass	insert tree div>div after previous_sibling_descendant	
+Pass	add the class 'test' to the element in the tree inserted again after previous_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted again after previous_sibling_descendant	
+Pass	remove tree div>div after previous_sibling_descendant	
+Pass	insert element div>div[test_attr] after previous_sibling_descendant	
+Pass	remove element div>div[test_attr] after previous_sibling_descendant	
+Pass	insert tree div>div.test after subject	
+Pass	remove the class 'test' from the element in the tree inserted after subject	
+Pass	add the class 'test' again to the element in the tree inserted after subject	
+Pass	remove tree div>div.test after subject	
+Pass	insert tree div>div after subject	
+Pass	add the class 'test' to the element in the tree inserted again after subject	
+Pass	remove the class 'test' from the element in the tree inserted again after subject	
+Pass	remove tree div>div after subject	
+Pass	insert element div>div[test_attr] after subject	
+Pass	remove element div>div[test_attr] after subject	
+Pass	insert tree div>div.test after next_sibling	
+Pass	remove the class 'test' from the element in the tree inserted after next_sibling	
+Pass	add the class 'test' again to the element in the tree inserted after next_sibling	
+Pass	remove tree div>div.test after next_sibling	
+Pass	insert tree div>div after next_sibling	
+Pass	add the class 'test' to the element in the tree inserted again after next_sibling	
+Pass	remove the class 'test' from the element in the tree inserted again after next_sibling	
+Pass	remove tree div>div after next_sibling	
+Pass	insert element div>div[test_attr] after next_sibling	
+Pass	remove element div>div[test_attr] after next_sibling	
+Pass	insert tree div>div.test after next_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted after next_sibling_child	
+Pass	add the class 'test' again to the element in the tree inserted after next_sibling_child	
+Pass	remove tree div>div.test after next_sibling_child	
+Pass	insert tree div>div after next_sibling_child	
+Pass	add the class 'test' to the element in the tree inserted again after next_sibling_child	
+Pass	remove the class 'test' from the element in the tree inserted again after next_sibling_child	
+Pass	remove tree div>div after next_sibling_child	
+Pass	insert element div>div[test_attr] after next_sibling_child	
+Pass	remove element div>div[test_attr] after next_sibling_child	
+Pass	insert tree div>div.test after next_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted after next_sibling_descendant	
+Pass	add the class 'test' again to the element in the tree inserted after next_sibling_descendant	
+Pass	remove tree div>div.test after next_sibling_descendant	
+Pass	insert tree div>div after next_sibling_descendant	
+Pass	add the class 'test' to the element in the tree inserted again after next_sibling_descendant	
+Pass	remove the class 'test' from the element in the tree inserted again after next_sibling_descendant	
+Pass	remove tree div>div after next_sibling_descendant	
+Pass	insert element div>div[test_attr] after next_sibling_descendant	
+Pass	remove element div>div[test_attr] after next_sibling_descendant	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-invalidation-after-removing-non-first-element.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-invalidation-after-removing-non-first-element.txt
new file mode 100644
index 000000000000..a985a3ed0c62
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-invalidation-after-removing-non-first-element.txt
@@ -0,0 +1,12 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 2 tests
+
+2 Pass
+Details
+Result	Test Name	MessagePass	initial_color: div#subject.color	
+Pass	remove descendant: div#subject.color	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-invalidation-for-wiping-an-element.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-invalidation-for-wiping-an-element.txt
new file mode 100644
index 000000000000..181b14bf0eec
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-invalidation-for-wiping-an-element.txt
@@ -0,0 +1,15 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 5 tests
+
+5 Pass
+Details
+Result	Test Name	MessagePass	initial color: div#subject.color	
+Pass	color after inserting text and div > .descendant: div#subject.color	
+Pass	color after wiping #child to remove div > .descendant: div#subject.color	
+Pass	color after inserting text and #child > .descendant: div#subject.color	
+Pass	color after wiping #child to remove .descendant: div#subject.color	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-sibling-insertion-removal.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-sibling-insertion-removal.txt
new file mode 100644
index 000000000000..c813d3ab0340
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-sibling-insertion-removal.txt
@@ -0,0 +1,38 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 28 tests
+
+28 Pass
+Details
+Result	Test Name	MessagePass	subject1: initial color should be rgb(128, 128, 128)	
+Pass	subject1: color after #sibling1_1 inserted should be rgb(255, 0, 0)	
+Pass	subject2: initial color should be rgb(128, 128, 128)	
+Pass	subject2: color after #sibling2_1 removed should be rgb(0, 128, 0)	
+Pass	subject3: initial color should be rgb(128, 128, 128)	
+Pass	subject3: color after #sibling3_1 inserted should be rgb(0, 0, 255)	
+Pass	subject4: initial color should be rgb(128, 128, 128)	
+Pass	subject4: color after #sibling4_1 removed should be rgb(255, 255, 0)	
+Pass	subject5: initial color should be rgb(255, 0, 0)	
+Pass	subject5: color after #sibling5_1 removed should be rgb(128, 128, 128)	
+Pass	subject6: initial color should be rgb(0, 128, 0)	
+Pass	subject6: color after #sibling6_1 inserted should be rgb(128, 128, 128)	
+Pass	subject7: initial color should be rgb(0, 0, 255)	
+Pass	subject7: color after #sibling7_1 removed should be rgb(128, 128, 128)	
+Pass	subject8: initial color should be rgb(255, 255, 0)	
+Pass	subject8: color after #sibling8_1 inserted should be rgb(128, 128, 128)	
+Pass	subject9: initial color should be rgb(128, 128, 128)	
+Pass	subject9: color after #sibling9_1 inserted should be rgb(255, 0, 0)	
+Pass	subject10: initial color should be rgb(128, 128, 128)	
+Pass	subject10: color after #sibling10_1 removed should be rgb(0, 128, 0)	
+Pass	subject11: initial color should be rgb(128, 128, 128)	
+Pass	subject11: color after #sibling11_1 inserted should be rgb(0, 0, 255)	
+Pass	subject12: initial color should be rgb(128, 128, 128)	
+Pass	subject12: color after #sibling12_1 removed should be rgb(255, 255, 0)	
+Pass	subject13: initial color should be rgb(128, 128, 128)	
+Pass	subject13: color after #sibling12_1 removed should be rgb(0, 128, 0)	
+Pass	subject14: initial color should be rgb(0, 128, 0)	
+Pass	subject14: color after #sibling14_2 removed should be rgb(128, 128, 128)	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-sibling.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-sibling.txt
new file mode 100644
index 000000000000..ffcde038aab0
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-sibling.txt
@@ -0,0 +1,81 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 71 tests
+
+71 Pass
+Details
+Result	Test Name	MessagePass	initial_color	
+Pass	add .test to first_sibling	
+Pass	remove .test from first_sibling	
+Pass	add .test to second_sibling	
+Pass	remove .test from second_sibling	
+Pass	add .test to third_sibling	
+Pass	remove .test from third_sibling	
+Pass	add .test to first_sibling_child	
+Pass	remove .test from first_sibling_child	
+Pass	add .test to first_sibling_descendant	
+Pass	remove .test from first_sibling_descendant	
+Pass	add .test to third_sibling_child	
+Pass	remove .test from third_sibling_child	
+Pass	add .test to third_sibling_descendant	
+Pass	remove .test from third_sibling_descendant	
+Pass	insert element div.test before first_sibling	
+Pass	remove element div.test before first_sibling	
+Pass	insert element div.test before second_sibling	
+Pass	remove element div.test before second_sibling	
+Pass	insert element div.test before third_sibling	
+Pass	remove element div.test before third_sibling	
+Pass	insert element div.test before first_sibling_child	
+Pass	remove element div.test before first_sibling_child	
+Pass	insert element div.test before first_sibling_descendant	
+Pass	remove element div.test before first_sibling_descendant	
+Pass	insert element div.test before third_sibling_child	
+Pass	remove element div.test before third_sibling_child	
+Pass	insert element div.test before third_sibling_descendant	
+Pass	remove element div.test before third_sibling_descendant	
+Pass	insert element div.test after first_sibling	
+Pass	remove element div.test after first_sibling	
+Pass	insert element div.test after second_sibling	
+Pass	remove element div.test after second_sibling	
+Pass	insert element div.test after third_sibling	
+Pass	remove element div.test after third_sibling	
+Pass	insert element div.test after first_sibling_child	
+Pass	remove element div.test after first_sibling_child	
+Pass	insert element div.test after first_sibling_descendant	
+Pass	remove element div.test after first_sibling_descendant	
+Pass	insert element div.test after third_sibling_child	
+Pass	remove element div.test after third_sibling_child	
+Pass	insert element div.test after third_sibling_descendant	
+Pass	remove element div.test after third_sibling_descendant	
+Pass	insert tree div>div.test before first_sibling	
+Pass	remove tree div>div.test before first_sibling	
+Pass	insert tree div>div.test before second_sibling	
+Pass	remove tree div>div.test before second_sibling	
+Pass	insert tree div>div.test before third_sibling	
+Pass	remove tree div>div.test before third_sibling	
+Pass	insert tree div>div.test before first_sibling_child	
+Pass	remove tree div>div.test before first_sibling_child	
+Pass	insert tree div>div.test before first_sibling_descendant	
+Pass	remove tree div>div.test before first_sibling_descendant	
+Pass	insert tree div>div.test before third_sibling_child	
+Pass	remove tree div>div.test before third_sibling_child	
+Pass	insert tree div>div.test before third_sibling_descendant	
+Pass	remove tree div>div.test before third_sibling_descendant	
+Pass	insert tree div>div.test after first_sibling	
+Pass	remove tree div>div.test after first_sibling	
+Pass	insert tree div>div.test after second_sibling	
+Pass	remove tree div>div.test after second_sibling	
+Pass	insert tree div>div.test after third_sibling	
+Pass	remove tree div>div.test after third_sibling	
+Pass	insert tree div>div.test after first_sibling_child	
+Pass	remove tree div>div.test after first_sibling_child	
+Pass	insert tree div>div.test after first_sibling_descendant	
+Pass	remove tree div>div.test after first_sibling_descendant	
+Pass	insert tree div>div.test after third_sibling_child	
+Pass	remove tree div>div.test after third_sibling_child	
+Pass	insert tree div>div.test after third_sibling_descendant	
+Pass	remove tree div>div.test after third_sibling_descendant	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-side-effect.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-side-effect.txt
new file mode 100644
index 000000000000..b9fb3ebb9cba
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-side-effect.txt
@@ -0,0 +1,13 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 3 tests
+
+3 Pass
+Details
+Result	Test Name	MessagePass	Initial colors	
+Pass	Matches after #blocks_match removed	
+Pass	Does not match after #blocks_match added	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-unstyled.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-unstyled.txt
new file mode 100644
index 000000000000..4bdd1bc984c7
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-unstyled.txt
@@ -0,0 +1,19 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 9 tests
+
+9 Pass
+Details
+Result	Test Name	MessagePass	Initial color	
+Pass	add test to subject_descendant	
+Pass	remove test from subject_descendant	
+Pass	add test to sibling_descendant	
+Pass	remove test from sibling_descendant	
+Pass	add test_inner to subject_child	
+Pass	remove test_inner from subject_child	
+Pass	add test_inner to sibling_child	
+Pass	remove test_inner from sibling_child	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-with-nesting-parent-containing-complex.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-with-nesting-parent-containing-complex.txt
new file mode 100644
index 000000000000..669218122827
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-with-nesting-parent-containing-complex.txt
@@ -0,0 +1,47 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 37 tests
+
+37 Pass
+Details
+Result	Test Name	MessagePass	#anchor1 initially white	
+Pass	#anchor1 becomes rgb(0, 0, 255) after adding .ancestor to #grand_parent1	
+Pass	#anchor1 becomes rgb(255, 255, 255) after removing .ancestor from #grand_parent1	
+Pass	#anchor1 becomes rgb(0, 0, 255) after adding .ancestor to #parent1	
+Pass	#anchor1 becomes rgb(255, 255, 255) after removing .ancestor from #parent1	
+Pass	#anchor2 initially white	
+Pass	#anchor2 becomes rgb(173, 216, 230) after adding .ancestor to #grand_parent2	
+Pass	#anchor2 becomes rgb(255, 255, 255) after removing .ancestor from #grand_parent2	
+Pass	#anchor2 becomes rgb(173, 216, 230) after adding .ancestor to #parent2	
+Pass	#anchor2 becomes rgb(255, 255, 255) after removing .ancestor from #parent2	
+Pass	#anchor3 initially white	
+Pass	#anchor3 becomes rgb(255, 255, 0) after adding .ancestor_prev to #grand_parent_indirect_prev3	
+Pass	#anchor3 becomes rgb(154, 205, 50) after adding .ancestor to #grand_parent3	
+Pass	#anchor3 becomes rgb(255, 255, 0) after removing .ancestor from #grand_parent3	
+Pass	#anchor3 becomes rgb(255, 255, 255) after removing .ancestor_prev from #grand_parent_indirect_prev3	
+Pass	#anchor3 becomes rgb(255, 255, 0) after adding .ancestor_prev to #grand_parent_direct_prev3	
+Pass	#anchor3 becomes rgb(255, 255, 255) after removing .ancestor_prev from #grand_parent_direct_prev3	
+Pass	#anchor3 becomes rgb(255, 255, 0) after adding .ancestor_prev to #parent_indirect_prev3	
+Pass	#anchor3 becomes rgb(154, 205, 50) after adding .ancestor to #parent3	
+Pass	#anchor3 becomes rgb(255, 255, 0) after removing .ancestor from #parent3	
+Pass	#anchor3 becomes rgb(255, 255, 255) after removing .ancestor_prev from #parent_indirect_prev3	
+Pass	#anchor3 becomes rgb(255, 255, 0) after adding .ancestor_prev to #parent_direct_prev3	
+Pass	#anchor3 becomes rgb(255, 255, 255) after removing .ancestor_prev from #parent_direct_prev3	
+Pass	#anchor3 becomes rgb(255, 255, 0) after adding .ancestor_prev to #anchor_indirect_prev3	
+Pass	#anchor3 becomes rgb(255, 255, 255) after removing .ancestor_prev from #anchor_indirect_prev3	
+Pass	#anchor3 becomes rgb(255, 255, 0) after adding .ancestor_prev to #anchor_direct_prev3	
+Pass	#anchor3 becomes rgb(255, 255, 255) after removing .ancestor_prev from #anchor_direct_prev3	
+Pass	#anchor4 initially white	
+Pass	#anchor4 becomes rgb(0, 128, 0) after adding .prev to #indirect_prev4	
+Pass	#anchor4 becomes rgb(255, 255, 255) after removing .prev from #indirect_prev4	
+Pass	#anchor4 becomes rgb(0, 128, 0) after adding .prev to #direct_prev4	
+Pass	#anchor4 becomes rgb(255, 255, 255) after removing .prev from #direct_prev4	
+Pass	#anchor5 initially white	
+Pass	#anchor5 becomes rgb(144, 238, 144) after adding .prev to #indirect_prev5	
+Pass	#anchor5 becomes rgb(255, 255, 255) after removing .prev from #indirect_prev5	
+Pass	#anchor5 becomes rgb(144, 238, 144) after adding .prev to #direct_prev5	
+Pass	#anchor5 becomes rgb(255, 255, 255) after removing .prev from #direct_prev5	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-with-nesting-parent-containing-hover.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-with-nesting-parent-containing-hover.txt
new file mode 100644
index 000000000000..2f49ced323fd
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-with-nesting-parent-containing-hover.txt
@@ -0,0 +1,11 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 1 tests
+
+1 Fail
+Details
+Result	Test Name	MessageFail	CSS Selector Invalidation: :has() with nesting parent containing :hover	promise_test: Unhandled rejection with value: object ""ReferenceError: 'test_driver' is not defined""
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-with-not.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-with-not.txt
new file mode 100644
index 000000000000..01772770d9c7
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-with-not.txt
@@ -0,0 +1,31 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 21 tests
+
+21 Pass
+Details
+Result	Test Name	MessagePass	Initial color	
+Pass	remove .test to subject_child	
+Pass	add .test from subject_child	
+Pass	remove .test to subject_descendant	
+Pass	add .test from subject_descendant	
+Pass	insert element div before subject_child	
+Pass	remove element div before subject_child	
+Pass	insert element div before subject_descendant	
+Pass	remove element div before subject_descendant	
+Pass	insert element div after subject_child	
+Pass	remove element div after subject_child	
+Pass	insert element div after subject_descendant	
+Pass	remove element div after subject_descendant	
+Pass	insert tree div>div before subject_child	
+Pass	remove tree div>div before subject_child	
+Pass	insert tree div>div before subject_descendant	
+Pass	remove tree div>div before subject_descendant	
+Pass	insert tree div.test after subject_child	
+Pass	remove tree div.test after subject_child	
+Pass	insert tree div.test after subject_descendant	
+Pass	remove tree div.test after subject_descendant	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-with-nth-child.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-with-nth-child.txt
new file mode 100644
index 000000000000..701f9daf75ad
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-with-nth-child.txt
@@ -0,0 +1,15 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 5 tests
+
+5 Pass
+Details
+Result	Test Name	MessagePass	Initially red	
+Pass	:nth-child() no longer matching after removal	
+Pass	:nth-last-child() no longer matching after removal	
+Pass	:nth-child() in non-subject no longer matching after removal	
+Pass	:nth-last-child() in non-subject no longer matching after removal	
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-with-pseudo-class.txt b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-with-pseudo-class.txt
new file mode 100644
index 000000000000..c3c86685a7a0
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/selectors/invalidation/has-with-pseudo-class.txt
@@ -0,0 +1,52 @@
+Summary
+
+Harness status: OK
+
+Rerun
+
+Found 41 tests
+
+22 Pass
+19 Fail
+Details
+Result	Test Name	MessagePass	Before set checked on checkbox, testing subject	
+Fail	Set checked on checkbox, testing subject	assert_equals: expected ""rgb(255, 0, 0)"" but got ""rgb(128, 128, 128)""
+Pass	Unset checked on checkbox, testing subject	
+Fail	Set select on option	assert_equals: expected ""rgb(255, 0, 0)"" but got ""rgb(128, 128, 128)""
+Pass	Reset select	
+Pass	Before set disabled on checkbox, testing subject	
+Pass	Set disabled on checkbox, testing subject	
+Fail	Unset disabled on checkbox, testing subject	assert_equals: expected ""rgb(128, 128, 128)"" but got ""rgb(255, 0, 0)""
+Pass	Before set disabled on checkbox, testing subject3	
+Pass	Set disabled on checkbox, testing subject3	
+Pass	Unset disabled on checkbox, testing subject3	
+Fail	Before set disabled on option, testing subject	assert_equals: expected ""rgb(128, 128, 128)"" but got ""rgb(255, 0, 0)""
+Pass	Set disabled on option, testing subject	
+Fail	Unset disabled on option, testing subject	assert_equals: expected ""rgb(128, 128, 128)"" but got ""rgb(255, 0, 0)""
+Pass	Before set disabled on option, testing subject3	
+Pass	Set disabled on option, testing subject3	
+Pass	Unset disabled on option, testing subject3	
+Fail	Before set disabled on optgroup, testing subject	assert_equals: expected ""rgb(128, 128, 128)"" but got ""rgb(255, 0, 0)""
+Pass	Set disabled on optgroup, testing subject	
+Fail	Unset disabled on optgroup, testing subject	assert_equals: expected ""rgb(128, 128, 128)"" but got ""rgb(255, 0, 0)""
+Fail	Before set disabled on optgroup, testing subject2	assert_equals: expected ""rgb(128, 128, 128)"" but got ""rgb(255, 255, 0)""
+Pass	Set disabled on optgroup, testing subject2	
+Fail	Unset disabled on optgroup, testing subject2	assert_equals: expected ""rgb(128, 128, 128)"" but got ""rgb(255, 255, 0)""
+Pass	Before set disabled on optgroup, testing subject3	
+Pass	Set disabled on optgroup, testing subject3	
+Pass	Unset disabled on optgroup, testing subject3	
+Fail	Before set disabled on optgroup, testing subject4	assert_equals: expected ""rgb(128, 128, 128)"" but got ""rgb(255, 255, 0)""
+Pass	Set disabled on optgroup, testing subject4	
+Fail	Unset disabled on optgroup, testing subject4	assert_equals: expected ""rgb(128, 128, 128)"" but got ""rgb(255, 255, 0)""
+Fail	Before setting value of text_input, testing subject	assert_equals: expected ""rgb(128, 128, 128)"" but got ""rgb(255, 0, 0)""
+Fail	Set value of text_input, testing subject	assert_equals: expected ""rgb(255, 255, 0)"" but got ""rgb(255, 0, 0)""
+Fail	Clear value of text_input, testing subject	assert_equals: expected ""rgb(128, 128, 128)"" but got ""rgb(255, 0, 0)""
+Fail	Before setting value of text_input, testing subject2	assert_equals: expected ""rgb(128, 128, 128)"" but got ""rgb(255, 255, 0)""
+Pass	Set value of text_input, testing subject2	
+Fail	Clear value of text_input, testing subject2	assert_equals: expected ""rgb(128, 128, 128)"" but got ""rgb(255, 255, 0)""
+Pass	Before setting value of text_input, testing subject3	
+Fail	Set value of text_input, testing subject3	assert_equals: expected ""rgb(255, 255, 0)"" but got ""rgb(128, 128, 128)""
+Pass	Clear value of text_input, testing subject3	
+Fail	Before setting value of text_input, testing subject4	assert_equals: expected ""rgb(128, 128, 128)"" but got ""rgb(255, 255, 0)""
+Pass	Set value of text_input, testing subject4	
+Fail	Clear value of text_input, testing subject4	assert_equals: expected ""rgb(128, 128, 128)"" but got ""rgb(255, 255, 0)""
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-argument-with-explicit-scope.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-argument-with-explicit-scope.html
new file mode 100644
index 000000000000..f9448f5e02b7
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-argument-with-explicit-scope.html
@@ -0,0 +1,69 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>:has pseudo class behavior with explicit ':scope' in its argument</title>
+<link rel=""author"" title=""Byungwoo Lee"" href=""mailto:blee@igalia.com"">
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<script src=""../../resources/testharness.js""></script>
+<script src=""../../resources/testharnessreport.js""></script>
+
+<main>
+ <div id=d01 class=""a"">
+  <div id=scope1 class=""b"">
+    <div id=d02 class=""c"">
+      <div id=d03 class=""c"">
+        <div id=d04 class=""d""></div>
+      </div>
+    </div>
+    <div id=d05 class=""e""></div>
+  </div>
+ </div>
+ <div id=d06>
+  <div id=scope2 class=""b"">
+    <div id=d07 class=""c"">
+      <div id=d08 class=""c"">
+        <div id=d09></div>
+      </div>
+    </div>
+  </div>
+ </div>
+</div>
+
+<script>
+  function formatElements(elements) {
+    return elements.map(e => e.id).sort().join();
+  }
+
+  // Test that |selector| returns the given elements in the given scope element
+  function test_selector_all(scope, selector, expected) {
+    test(function() {
+      let actual = Array.from(scope.querySelectorAll(selector));
+      assert_equals(formatElements(actual), formatElements(expected));
+    }, `${selector} matches expected elements on ${scope.id}`);
+  }
+
+  // Test that |selector1| and |selector2| returns same elements in the given scope element
+  function compare_selector_all(scope, selector1, selector2) {
+    test(function() {
+      let result1 = Array.from(scope.querySelectorAll(selector1));
+      let result2 = Array.from(scope.querySelectorAll(selector2));
+      assert_equals(formatElements(result1), formatElements(result2));
+    }, `${selector1} and ${selector2} returns same elements on ${scope.id}`);
+  }
+
+  // descendants of a scope element cannot have the scope element as its descendant
+  test_selector_all(scope1, ':has(:scope)', []);
+  test_selector_all(scope1, ':has(:scope .c)', []);
+  test_selector_all(scope1, ':has(.a :scope)', []);
+
+  // there can be more simple and efficient alternative for a ':scope' in ':has'
+  test_selector_all(scope1, '.a:has(:scope) .c', [d02, d03]);
+  compare_selector_all(scope1, '.a:has(:scope) .c', ':is(.a :scope .c)');
+  test_selector_all(scope2, '.a:has(:scope) .c', []);
+  compare_selector_all(scope2, '.a:has(:scope) .c', ':is(.a :scope .c)');
+  test_selector_all(scope1, '.c:has(:is(:scope .d))', [d02, d03]);
+  compare_selector_all(scope1, '.c:has(:is(:scope .d))', ':scope .c:has(.d)');
+  compare_selector_all(scope1, '.c:has(:is(:scope .d))', '.c:has(.d)');
+  test_selector_all(scope2, '.c:has(:is(:scope .d))', []);
+  compare_selector_all(scope2, '.c:has(:is(:scope .d))', ':scope .c:has(.d)');
+  compare_selector_all(scope2, '.c:has(:is(:scope .d))', '.c:has(.d)');
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-basic.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-basic.html
new file mode 100644
index 000000000000..d1e9af3662c6
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-basic.html
@@ -0,0 +1,81 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>Basic matching behavior of :has pseudo class</title>
+<link rel=""author"" title=""Byungwoo Lee"" href=""mailto:blee@igalia.com"">
+<script src=""../../resources/testharness.js""></script>
+<script src=""../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+
+<main id=main>
+  <div id=a class=""ancestor"">
+    <div id=b class=""parent ancestor"">
+      <div id=c class=""sibling descendant"">
+        <div id=d class=""descendant""></div>
+      </div>
+      <div id=e class=""target descendant""></div>
+    </div>
+    <div id=f class=""parent ancestor"">
+      <div id=g class=""target descendant""></div>
+    </div>
+    <div id=h class=""parent ancestor"">
+      <div id=i class=""target descendant""></div>
+      <div id=j class=""sibling descendant"">
+        <div id=k class=""descendant""></div>
+      </div>
+    </div>
+  </div>
+</main>
+
+<script>
+  function formatElements(elements) {
+    return elements.map(e => e.id).sort().join();
+  }
+
+  // Test that |selector| returns the given elements in #main.
+  function test_selector_all(selector, expected) {
+    test(function() {
+      let actual = Array.from(main.querySelectorAll(selector));
+      assert_equals(formatElements(actual), formatElements(expected));
+    }, `${selector} matches expected elements`);
+  }
+
+  // Test that |selector| returns the given element in #main.
+  function test_selector(selector, expected) {
+    test(function() {
+      assert_equals(main.querySelector(selector), expected);
+    }, `${selector} matches expected element`);
+  }
+
+  // Test that |selector| returns the given closest element.
+  function test_closest(node, selector, expected) {
+    test(function() {
+      assert_equals(node.closest(selector), expected);
+    }, `closest(${selector}) returns expected element`);
+  }
+
+  // Test that |selector| returns matching status.
+  function test_matches(node, selector, expected) {
+    test(function() {
+      assert_equals(node.matches(selector), expected);
+    }, `${selector} matches expectedly`);
+  }
+
+  test_selector_all(':has(#a)', []);
+  test_selector_all(':has(.ancestor)', [a]);
+  test_selector_all(':has(.target)', [a, b, f, h]);
+  test_selector_all(':has(.descendant)', [a, b, c, f, h, j]);
+  test_selector_all('.parent:has(.target)', [b, f, h]);
+  test_selector_all(':has(.sibling ~ .target)', [a, b]);
+  test_selector_all('.parent:has(.sibling ~ .target)', [b]);
+  test_selector_all(':has(:is(.target ~ .sibling .descendant))', [a, h, j]);
+  test_selector_all('.parent:has(:is(.target ~ .sibling .descendant))', [h]);
+  test_selector_all('.sibling:has(.descendant) ~ .target', [e]);
+  test_selector_all(':has(> .parent)', [a]);
+  test_selector_all(':has(> .target)', [b, f, h]);
+  test_selector_all(':has(> .parent, > .target)', [a, b, f, h]);
+  test_selector_all(':has(+ #h)', [f]);
+  test_selector_all('.parent:has(~ #h)', [b, f]);
+  test_selector('.sibling:has(.descendant)', c);
+  test_closest(k, '.ancestor:has(.descendant)', h);
+  test_matches(h, ':has(.target ~ .sibling .descendant)', true);
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-matches-to-uninserted-elements.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-matches-to-uninserted-elements.html
new file mode 100644
index 000000000000..17274f9cd745
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-matches-to-uninserted-elements.html
@@ -0,0 +1,37 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>Matches :has pseudo class to uninserted elements</title>
+<link rel=""author"" title=""Byungwoo Lee"" href=""mailto:blee@igalia.com"">
+<script src=""../../resources/testharness.js""></script>
+<script src=""../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+
+<script>
+  // Test that |selector| returns matching status.
+  function test_matches(node, selector, expected) {
+    test(function() {
+      assert_equals(node.matches(selector), expected);
+    }, `${selector} matches expectedly`);
+  }
+
+  subject = document.createElement('subject');
+
+  subject.innerHTML = '<child></child>';
+  test_matches(subject, ':has(child)', true);
+  test_matches(subject, ':has(> child)', true);
+
+  subject.innerHTML = '<child><descendant></descendant></child>';
+  test_matches(subject, ':has(descendant)', true);
+  test_matches(subject, ':has(> descendant)', false);
+
+  subject.innerHTML = '<child></child><direct_sibling></direct_sibling><indirect_sibling></indirect_sibling>';
+  test_matches(subject.firstChild, ':has(~ direct_sibling)', true);
+  test_matches(subject.firstChild, ':has(+ direct_sibling)', true);
+  test_matches(subject.firstChild, ':has(~ indirect_sibling)', true);
+  test_matches(subject.firstChild, ':has(+ indirect_sibling)', false);
+
+  test_matches(subject, ':has(*)', true);
+  test_matches(subject, ':has(> *)', true);
+  test_matches(subject, ':has(~ *)', false);
+  test_matches(subject, ':has(+ *)', false);
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-relative-argument.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-relative-argument.html
new file mode 100644
index 000000000000..6d39544f1ceb
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-relative-argument.html
@@ -0,0 +1,184 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>:has pseudo class behavior with various relative arguments</title>
+<link rel=""author"" title=""Byungwoo Lee"" href=""mailto:blee@igalia.com"">
+<script src=""../../resources/testharness.js""></script>
+<script src=""../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+
+<main id=main>
+ <div id=d01>
+  <div id=d02 class=""x"">
+    <div id=d03 class=""a""></div>
+    <div id=d04></div>
+    <div id=d05 class=""b""></div>
+  </div>
+  <div id=d06 class=""x"">
+    <div id=d07 class=""x"">
+      <div id=d08 class=""a""></div>
+    </div>
+  </div>
+  <div id=d09 class=""x"">
+    <div id=d10 class=""a"">
+      <div id=d11 class=""b""></div>
+    </div>
+  </div>
+  <div id=d12 class=""x"">
+    <div id=d13 class=""a"">
+      <div id=d14>
+        <div id=d15 class=""b""></div>
+      </div>
+    </div>
+    <div id=d16 class=""b""></div>
+  </div>
+ </div>
+ <div id=d17>
+  <div id=d18 class=""x""></div>
+  <div id=d19 class=""x""></div>
+  <div id=d20 class=""a""></div>
+  <div id=d21 class=""x""></div>
+  <div id=d22 class=""a"">
+   <div id=d23 class=""b""></div>
+  </div>
+  <div id=d24 class=""x""></div>
+  <div id=d25 class=""a"">
+   <div id=d26>
+    <div id=d27 class=""b""></div>
+   </div>
+  </div>
+  <div id=d28 class=""x""></div>
+  <div id=d29 class=""a""></div>
+  <div id=d30 class=""b"">
+   <div id=d31 class=""c""></div>
+  </div>
+  <div id=d32 class=""x""></div>
+  <div id=d33 class=""a""></div>
+  <div id=d34 class=""b"">
+   <div id=d35>
+    <div id=d36 class=""c""></div>
+   </div>
+  </div>
+  <div id=d37 class=""x""></div>
+  <div id=d38 class=""a""></div>
+  <div id=d39 class=""b""></div>
+  <div id=d40 class=""x""></div>
+  <div id=d41 class=""a""></div>
+  <div id=d42></div>
+  <div id=d43 class=""b"">
+   <div id=d44 class=""x"">
+    <div id=d45 class=""c""></div>
+   </div>
+  </div>
+  <div id=d46 class=""x""></div>
+  <div id=d47 class=""a"">
+  </div>
+ </div>
+ <div>
+  <div id=d48 class=""x"">
+   <div id=d49 class=""x"">
+    <div id=d50 class=""x d"">
+     <div id=d51 class=""x d"">
+      <div id=d52 class=""x"">
+       <div id=d53 class=""x e"">
+        <div id=d54 class=""f""></div>
+       </div>
+      </div>
+     </div>
+    </div>
+   </div>
+  </div>
+  <div id=d55 class=""x""></div>
+  <div id=d56 class=""x d""></div>
+  <div id=d57 class=""x d""></div>
+  <div id=d58 class=""x""></div>
+  <div id=d59 class=""x e""></div>
+  <div id=d60 class=""f""></div>
+ </div>
+ <div>
+  <div id=d61 class=""x""></div>
+  <div id=d62 class=""x y""></div>
+  <div id=d63 class=""x y"">
+   <div id=d64 class=""y g"">
+    <div id=d65 class=""y"">
+     <div id=d66 class=""y h"">
+      <div id=d67 class=""i""></div>
+     </div>
+    </div>
+   </div>
+  </div>
+  <div id=d68 class=""x y"">
+   <div id=d69 class=""x""></div>
+   <div id=d70 class=""x""></div>
+   <div id=d71 class=""x y"">
+    <div id=d72 class=""y g"">
+     <div id=d73 class=""y"">
+      <div id=d74 class=""y h"">
+       <div id=d75 class=""i""></div>
+      </div>
+     </div>
+    </div>
+   </div>
+   <div id=d76 class=""x""></div>
+   <div id=d77 class=""j""><div id=d78><div id=d79></div></div></div>
+  </div>
+  <div id=d80 class=""j""></div>
+ </div>
+</main>
+
+<script>
+  function formatElements(elements) {
+    return elements.map(e => e.id).sort().join();
+  }
+
+  // Test that |selector| returns the given elements in #main.
+  function test_selector_all(selector, expected) {
+    test(function() {
+      let actual = Array.from(main.querySelectorAll(selector));
+      assert_equals(formatElements(actual), formatElements(expected));
+    }, `${selector} matches expected elements`);
+  }
+
+  test_selector_all('.x:has(.a)', [d02, d06, d07, d09, d12]);
+  test_selector_all('.x:has(.a > .b)', [d09]);
+  test_selector_all('.x:has(.a .b)', [d09, d12]);
+  test_selector_all('.x:has(.a + .b)', [d12]);
+  test_selector_all('.x:has(.a ~ .b)', [d02, d12]);
+
+  test_selector_all('.x:has(> .a)', [d02, d07, d09, d12]);
+  test_selector_all('.x:has(> .a > .b)', [d09]);
+  test_selector_all('.x:has(> .a .b)', [d09, d12]);
+  test_selector_all('.x:has(> .a + .b)', [d12]);
+  test_selector_all('.x:has(> .a ~ .b)', [d02, d12]);
+
+  test_selector_all('.x:has(+ .a)', [d19, d21, d24, d28, d32, d37, d40, d46]);
+  test_selector_all('.x:has(+ .a > .b)', [d21]);
+  test_selector_all('.x:has(+ .a .b)', [d21, d24]);
+  test_selector_all('.x:has(+ .a + .b)', [d28, d32, d37]);
+  test_selector_all('.x:has(+ .a ~ .b)', [d19, d21, d24, d28, d32, d37, d40]);
+
+  test_selector_all('.x:has(~ .a)', [d18, d19, d21, d24, d28, d32, d37, d40, d46]);
+  test_selector_all('.x:has(~ .a > .b)', [d18, d19, d21]);
+  test_selector_all('.x:has(~ .a .b)', [d18, d19, d21, d24]);
+  test_selector_all('.x:has(~ .a + .b)', [d18, d19, d21, d24, d28, d32, d37]);
+  test_selector_all('.x:has(~ .a + .b > .c)', [d18, d19, d21, d24, d28]);
+  test_selector_all('.x:has(~ .a + .b .c)', [d18, d19, d21, d24, d28, d32]);
+
+  test_selector_all('.x:has(.d .e)', [d48, d49, d50]);
+  test_selector_all('.x:has(.d .e) .f', [d54]);
+  test_selector_all('.x:has(> .d)', [d49, d50]);
+  test_selector_all('.x:has(> .d) .f', [d54]);
+  test_selector_all('.x:has(~ .d ~ .e)', [d48, d55, d56]);
+  test_selector_all('.x:has(~ .d ~ .e) ~ .f', [d60]);
+  test_selector_all('.x:has(+ .d ~ .e)', [d55, d56]);
+  test_selector_all('.x:has(+ .d ~ .e) ~ .f', [d60]);
+
+  test_selector_all('.y:has(> .g .h)', [d63, d71])
+  test_selector_all('.y:has(.g .h)', [d63, d68, d71])
+  test_selector_all('.y:has(> .g .h) .i', [d67, d75])
+  test_selector_all('.y:has(.g .h) .i', [d67, d75])
+
+  test_selector_all('.d .x:has(.e)', [d51, d52])
+
+  test_selector_all('.d ~ .x:has(~ .e)', [d57, d58])
+
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-sibling-chrome-crash.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-sibling-chrome-crash.html
new file mode 100644
index 000000000000..c698b26f2665
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-sibling-chrome-crash.html
@@ -0,0 +1,14 @@
+<!DOCTYPE html>
+<title>CSS Selectors Test: Chrome crash issue 1470477</title>
+<link rel=""help"" href=""https://crbug.com/1470477"">
+<style>
+  :has(> :where(label:first-child + [a=""a""]:only-of-type,
+    [a=""a""]:only-of-type + label:last-child)) label:last-child {
+      margin-inline: 1em;
+  }
+</style>
+<p>PASS if this tests does not crash</p>
+<script>
+    if (window.internals)
+        window.internals.signalTextTestIsDone(""PASS"");
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-specificity.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-specificity.html
new file mode 100644
index 000000000000..b18b8f8e4360
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/has-specificity.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<title>Specificity for complex :has selectors</title>
+<script src=""../../resources/testharness.js""></script>
+<script src=""../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#specificity-rules"">
+<style>
+  main :has(#foo) { --t0:PASS; }
+  main :has(.foo) { --t0:FAIL; }
+
+  main :has(span#foo) { --t1:PASS; }
+  main :has(#foo) { --t1:FAIL; }
+
+  main :has(.bar, #foo) { --t2:FAIL; }
+  main :has(#foo, .bar) { --t2:PASS; }
+
+  main :has(.bar, #foo) { --t3:PASS; }
+  main :has(.foo, .bar) { --t3:FAIL; }
+
+  main :has(span + span) { --t4:PASS; }
+  main :has(span) { --t4:FAIL; }
+
+  main :has(span, li, #foo) { --t5:PASS; }
+  main :has(span, li, p) { --t5:FAIL; }
+
+  main div:has(.foo) { --t6:FAIL; }
+  main div.baz { --t6:PASS; }
+
+  main div.baz { --t7:FAIL; }
+  main div:has(.foo) { --t7:PASS; }
+</style>
+<main id=main>
+  <div id=div class=baz><p><span id=foo class=foo></span><span class=bar></span><li></li></p></div>
+</main>
+<script>
+  function test_value(name, description) {
+    test(function() {
+      let actual = getComputedStyle(div).getPropertyValue(name);
+      assert_equals(actual, 'PASS');
+    }, description);
+  }
+
+  test_value('--t0', ':has(#foo) wins over :has(.foo)');
+  test_value('--t1', ':has(span#foo) wins over :has(#foo)');
+  test_value('--t2', ':has(.bar, #foo) has same specificity as :has(#foo, .bar)');
+  test_value('--t3', ':has(.bar, #foo) wins over :has(.foo, .bar)');
+  test_value('--t4', ':has(span + span) wins over :has(span)');
+  test_value('--t5', ':has(span, li, p) wins over :has(span, lo, p)');
+  test_value('--t6', 'latter .baz wins over :has(.foo)');
+  test_value('--t7', 'latter :has(.foo) wins over .baz');
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-css-nesting-shared.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-css-nesting-shared.html
new file mode 100644
index 000000000000..499fa9d629b4
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-css-nesting-shared.html
@@ -0,0 +1,105 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>:has() invalidation with nesting where the selector is shared</title>
+<link rel=""author"" title=""David Shin"" href=""mailto:dshin@mozilla.com"">
+<script src=""../../../resources/testharness.js""></script>
+<script src=""../../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<style>
+div, main { color: grey }
+#outer1:has(.test) {
+  & #subject1_1 {
+    color: red;
+  }
+  & + #subject1_2 {
+    color: orangered;
+  }
+}
+
+#outer2:has(.test) {
+  & .ancestor {
+    & #subject2_1 {
+      color: green;
+    }
+    & + #subject2_2 {
+      color: lightgreen;
+    }
+  }
+}
+
+#outer3:is(:has(.test) .outer) {
+  & #subject3_1 {
+    color: blue;
+  }
+  & + #subject3_2 {
+    color: skyblue;
+  }
+}
+</style>
+<main id=""main"">
+  <div>
+    <div id=""outer1"">
+      <div id=""trigger1""></div>
+      <div id=""subject1_1""></div>
+    </div>
+    <div id=""subject1_2""></div>
+  </div>
+  <div id=""outer2"">
+    <div id=""trigger2""></div>
+    <div class=""ancestor"">
+      <div id=""subject2_1""></div>
+    </div>
+    <div id=""subject2_2""></div>
+  </div>
+  <div id=""trigger3"">
+    <div id=""outer3"" class=""outer"">
+      <div id=""subject3_1""></div>
+    </div>
+    <div id=""subject3_2""></div>
+  </div>
+</main>
+<script>
+const grey = 'rgb(128, 128, 128)';
+const red = 'rgb(255, 0, 0)';
+const orangered = 'rgb(255, 69, 0)';
+const green = 'rgb(0, 128, 0)';
+const lightgreen = 'rgb(144, 238, 144)';
+const blue = 'rgb(0, 0, 255)';
+const skyblue = 'rgb(135, 206, 235)';
+
+const colors = {
+  red: {
+    descendant: red,
+    sibling: orangered,
+  },
+  green: {
+    descendant: green,
+    sibling: lightgreen,
+  },
+  blue: {
+    descendant: blue,
+    sibling: skyblue,
+  },
+};
+
+function testColor(testName, element, color) {
+  test(function() {
+    assert_equals(getComputedStyle(element).color, color);
+  }, testName);
+}
+
+function testClassChange(trigger, targetDescendant, targetSibling, expected)
+{
+  trigger.classList.add('test');
+  testColor(`add .test to ${trigger.id} - check ${targetDescendant.id}`, targetDescendant, colors[expected].descendant);
+  testColor(`add .test to ${trigger.id} - check ${targetSibling.id}`, targetSibling, colors[expected].sibling);
+  trigger.classList.remove('test');
+  testColor(`remove .test from ${trigger.id} - check ${targetDescendant.id}`, targetDescendant, grey);
+  testColor(`remove .test from ${trigger.id} - check ${targetSibling.id}`, targetSibling, grey);
+}
+
+testClassChange(trigger1, subject1_1, subject1_2, 'red');
+testClassChange(trigger2, subject2_1, subject2_2, 'green');
+testClassChange(trigger3, subject3_1, subject3_2, 'blue');
+
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-in-adjacent-position.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-in-adjacent-position.html
new file mode 100644
index 000000000000..1525ce8ac3c5
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-in-adjacent-position.html
@@ -0,0 +1,312 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>CSS Selector Invalidation: :has() in adjacent position</title>
+<link rel=""author"" title=""Antti Koivisto"" href=""mailto:antti@apple.com"">
+<script src=""../../../resources/testharness.js""></script>
+<script src=""../../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<style>
+div, main { color: grey }
+div:has(.test) + #subject { color: red }
+div:has([test_attr]) + #subject { color: orangered }
+div:has(> .test) + #subject { color: green }
+div:has(> [test_attr]) + #subject { color: lightgreen }
+div:has(~ .test) + #subject { color: yellow }
+div:has(~ [test_attr]) + #subject { color: ivory }
+div:has(+ .test) + #subject { color: blue }
+div:has(+ [test_attr]) + #subject { color: skyblue }
+div:has(~ div .test) + #subject { color: purple }
+div:has(~ div [test_attr]) + #subject { color: violet }
+div:has(+ div .test) + #subject { color: pink }
+div:has(+ div [test_attr]) + #subject { color: lightpink }
+</style>
+
+<main id=main>
+    <div id=previous_sibling>
+        <div id=previous_sibling_child>
+            <div id=previous_sibling_descendant></div>
+        </div>
+    </div>
+    <div id=subject></div>
+    <div id=next_sibling>
+        <div id=next_sibling_child>
+            <div id=next_sibling_descendant></div>
+        </div>
+    </div>
+</main>
+
+<script>
+const grey = 'rgb(128, 128, 128)';
+const red = 'rgb(255, 0, 0)';
+const orangered = 'rgb(255, 69, 0)';
+const green = 'rgb(0, 128, 0)';
+const lightgreen = 'rgb(144, 238, 144)';
+const blue = 'rgb(0, 0, 255)';
+const skyblue = 'rgb(135, 206, 235)';
+const yellow = 'rgb(255, 255, 0)';
+const ivory = 'rgb(255, 255, 240)';
+const purple = 'rgb(128, 0, 128)';
+const violet = 'rgb(238, 130, 238)';
+const pink = 'rgb(255, 192, 203)';
+const lightpink = 'rgb(255, 182, 193)';
+const colors = {
+  grey: {
+    classTest: grey,
+    attributeTest: grey,
+  },
+  red: {
+    classTest: red,
+    attributeTest: orangered,
+  },
+  green: {
+    classTest: green,
+    attributeTest: lightgreen,
+  },
+  blue: {
+    classTest: blue,
+    attributeTest: skyblue,
+  },
+  yellow: {
+    classTest: yellow,
+    attributeTest: ivory,
+  },
+  purple: {
+    classTest: purple,
+    attributeTest: violet,
+  },
+  pink: {
+    classTest: pink,
+    attributeTest: lightpink,
+  },
+};
+
+function testColor(test_name, color) {
+    test(function() {
+        assert_equals(getComputedStyle(subject).color, color);
+    }, test_name);
+}
+
+function testClassChange(element, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    element.classList.add('test');
+    testColor(`add .test to ${element.id}`, expectedColorForClassTest);
+    element.classList.remove('test');
+    testColor(`remove .test from ${element.id}`, grey);
+}
+
+function testElementInsertionBefore(beforeElement, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    const expectedColorForAttributeTest = colors[expectedColorName].attributeTest;
+    const newElement = document.createElement('div');
+    newElement.classList.add('test')
+
+    beforeElement.before(newElement);
+    testColor(`insert element div.test before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newElement.classList.remove('test');
+    testColor(`remove the class 'test' from the element inserted before ${beforeElement.id}`, grey);
+
+    newElement.classList.add('test');
+    testColor(`add the class 'test' again to the element inserted before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newElement.remove();
+    testColor(`remove element div.test before ${beforeElement.id}`, grey);
+
+    newElement.classList.remove('test');
+
+    beforeElement.before(newElement);
+    testColor(`insert element div before ${beforeElement.id}`, grey);
+
+    newElement.classList.add('test');
+    testColor(`add the class 'test' to the element inserted again before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newElement.classList.remove('test');
+    testColor(`remove the class 'test' from the element inserted again before ${beforeElement.id}`, grey);
+
+    newElement.remove();
+    testColor(`remove element div before ${beforeElement.id}`, grey);
+
+    newElement.setAttribute('test_attr', '');
+
+    beforeElement.before(newElement);
+    testColor(`insert element div[test_attr] before ${beforeElement.id}`, expectedColorForAttributeTest);
+
+    newElement.remove();
+    testColor(`remove element div[test_attr] before ${beforeElement.id}`, grey);
+}
+
+function testElementInsertionAfter(afterElement, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    const expectedColorForAttributeTest = colors[expectedColorName].attributeTest;
+    const newElement = document.createElement('div');
+    newElement.classList.add('test')
+
+    afterElement.after(newElement);
+    testColor(`insert element div.test after ${afterElement.id}`, expectedColorForClassTest);
+
+    newElement.classList.remove('test');
+    testColor(`remove the class 'test' from the element inserted after ${afterElement.id}`, grey);
+
+    newElement.classList.add('test');
+    testColor(`add the class 'test' again to the element inserted after ${afterElement.id}`, expectedColorForClassTest);
+
+    newElement.remove();
+    testColor(`remove element div.test after ${afterElement.id}`, grey);
+
+    newElement.classList.remove('test');
+
+    afterElement.after(newElement);
+    testColor(`insert element div after ${afterElement.id}`, grey);
+
+    newElement.classList.add('test');
+    testColor(`add the class 'test' to the element inserted again after ${afterElement.id}`, expectedColorForClassTest);
+
+    newElement.classList.remove('test');
+    testColor(`remove the class 'test' from the element inserted again after ${afterElement.id}`, grey);
+
+    newElement.remove();
+    testColor(`remove element div after ${afterElement.id}`, grey);
+
+    newElement.setAttribute('test_attr', '');
+
+    afterElement.after(newElement);
+    testColor(`insert element div[test_attr] after ${afterElement.id}`, expectedColorForAttributeTest);
+
+    newElement.remove();
+    testColor(`remove element div[test_attr] after ${afterElement.id}`, grey);
+}
+
+function testTreeInsertionBefore(beforeElement, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    const expectedColorForAttributeTest = colors[expectedColorName].attributeTest;
+    const newElement = document.createElement('div');
+    const newChild = document.createElement('div');
+    newChild.classList.add('test');
+    newElement.appendChild(newChild);
+
+    beforeElement.before(newElement);
+    testColor(`insert tree div>div.test before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newChild.classList.remove('test');
+    testColor(`remove the class 'test' from the element in the tree inserted before ${beforeElement.id}`, grey);
+
+    newChild.classList.add('test');
+    testColor(`add the class 'test' again to the element in the tree inserted before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newElement.remove();
+    testColor(`remove tree div>div.test before ${beforeElement.id}`, grey);
+
+    newChild.classList.remove('test');
+
+    beforeElement.before(newElement);
+    testColor(`insert tree div>div before ${beforeElement.id}`, grey);
+
+    newChild.classList.add('test');
+    testColor(`add the class 'test' to the element in the tree inserted again before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newChild.classList.remove('test');
+    testColor(`remove the class 'test' from the element in the tree inserted again before ${beforeElement.id}`, grey);
+
+    newElement.remove();
+    testColor(`remove tree div>div before ${beforeElement.id}`, grey);
+
+    newChild.setAttribute('test_attr', '');
+
+    beforeElement.before(newElement);
+    testColor(`insert element div>div[test_attr] before ${beforeElement.id}`, expectedColorForAttributeTest);
+
+    newElement.remove();
+    testColor(`remove element div>div[test_attr] before ${beforeElement.id}`, grey);
+}
+
+function testTreeInsertionAfter(afterElement, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    const expectedColorForAttributeTest = colors[expectedColorName].attributeTest;
+    const newElement = document.createElement('div');
+    const newChild = document.createElement('div');
+    newChild.classList.add('test');
+    newElement.appendChild(newChild);
+
+    afterElement.after(newElement);
+    testColor(`insert tree div>div.test after ${afterElement.id}`, expectedColorForClassTest);
+
+    newChild.classList.remove('test');
+    testColor(`remove the class 'test' from the element in the tree inserted after ${afterElement.id}`, grey);
+
+    newChild.classList.add('test');
+    testColor(`add the class 'test' again to the element in the tree inserted after ${afterElement.id}`, expectedColorForClassTest);
+
+    newElement.remove();
+    testColor(`remove tree div>div.test after ${afterElement.id}`, grey);
+
+    newChild.classList.remove('test');
+
+    afterElement.after(newElement);
+    testColor(`insert tree div>div after ${afterElement.id}`, grey);
+
+    newChild.classList.add('test');
+    testColor(`add the class 'test' to the element in the tree inserted again after ${afterElement.id}`, expectedColorForClassTest);
+
+    newChild.classList.remove('test');
+    testColor(`remove the class 'test' from the element in the tree inserted again after ${afterElement.id}`, grey);
+
+    newElement.remove();
+    testColor(`remove tree div>div after ${afterElement.id}`, grey);
+
+    newChild.setAttribute('test_attr', '');
+
+    afterElement.after(newElement);
+    testColor(`insert element div>div[test_attr] after ${afterElement.id}`, expectedColorForAttributeTest);
+
+    newElement.remove();
+    testColor(`remove element div>div[test_attr] after ${afterElement.id}`, grey);
+}
+
+testColor('Initial color', grey);
+
+testClassChange(previous_sibling, ""grey"");
+testClassChange(previous_sibling_child, ""green"");
+testClassChange(previous_sibling_descendant, ""red"");
+testClassChange(subject, ""blue"");
+testClassChange(next_sibling, ""yellow"");
+testClassChange(next_sibling_child, ""purple"");
+testClassChange(next_sibling_descendant, ""purple"");
+
+testElementInsertionBefore(previous_sibling, ""grey"");
+testElementInsertionBefore(previous_sibling_child, ""green"");
+testElementInsertionBefore(previous_sibling_descendant, ""red"");
+testElementInsertionBefore(subject, ""grey"");
+testElementInsertionBefore(next_sibling, ""yellow"");
+testElementInsertionBefore(next_sibling_child, ""purple"");
+testElementInsertionBefore(next_sibling_descendant, ""purple"");
+
+testElementInsertionAfter(previous_sibling, ""grey"");
+testElementInsertionAfter(previous_sibling_child, ""green"");
+testElementInsertionAfter(previous_sibling_descendant, ""red"");
+testElementInsertionAfter(subject, ""yellow"");
+testElementInsertionAfter(next_sibling, ""yellow"");
+testElementInsertionAfter(next_sibling_child, ""purple"");
+testElementInsertionAfter(next_sibling_descendant, ""purple"");
+
+testTreeInsertionBefore(previous_sibling, ""grey"");
+testTreeInsertionBefore(previous_sibling_child, ""red"");
+testTreeInsertionBefore(previous_sibling_descendant, ""red"");
+testTreeInsertionBefore(subject, ""green"");
+testTreeInsertionBefore(next_sibling, ""purple"");
+testTreeInsertionBefore(next_sibling_child, ""purple"");
+testTreeInsertionBefore(next_sibling_descendant, ""purple"");
+
+testTreeInsertionAfter(previous_sibling, ""green"");
+testTreeInsertionAfter(previous_sibling_child, ""red"");
+testTreeInsertionAfter(previous_sibling_descendant, ""red"");
+testTreeInsertionAfter(subject, ""purple"");
+testTreeInsertionAfter(next_sibling, ""purple"");
+testTreeInsertionAfter(next_sibling_child, ""purple"");
+testTreeInsertionAfter(next_sibling_descendant, ""purple"");
+
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-in-ancestor-position.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-in-ancestor-position.html
new file mode 100644
index 000000000000..2685412c4975
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-in-ancestor-position.html
@@ -0,0 +1,320 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>CSS Selector Invalidation: :has() in ancestor position</title>
+<link rel=""author"" title=""Antti Koivisto"" href=""mailto:antti@apple.com"">
+<script src=""../../../resources/testharness.js""></script>
+<script src=""../../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<style>
+div, main { color: grey }
+div:has(.test) #subject { color: red }
+div:has([test_attr]) #subject { color: orangered }
+div:has(> .test) #subject { color: green }
+div:has(> [test_attr]) #subject { color: lightgreen }
+div:has(~ .test) #subject { color: yellow }
+div:has(~ [test_attr]) #subject { color: ivory }
+div:has(+ .test) #subject { color: blue }
+div:has(+ [test_attr]) #subject { color: skyblue }
+div:has(~ div .test) #subject { color: purple }
+div:has(~ div [test_attr]) #subject { color: violet }
+div:has(+ div .test) #subject { color: pink }
+div:has(+ div [test_attr]) #subject { color: lightpink }
+</style>
+
+<main id=main>
+    <div id=subject_ancestor>
+        <div id=subject_parent>
+            <div id=subject>
+                <div id=subject_child>
+                    <div id=subject_descendant></div>
+                </div>
+            </div>
+        </div>
+    </div>
+    <div id=next_sibling>
+        <div id=next_sibling_child>
+            <div id=next_sibling_descendant></div>
+        </div>
+    </div>
+</main>
+
+<script>
+const grey = 'rgb(128, 128, 128)';
+const red = 'rgb(255, 0, 0)';
+const orangered = 'rgb(255, 69, 0)';
+const green = 'rgb(0, 128, 0)';
+const lightgreen = 'rgb(144, 238, 144)';
+const blue = 'rgb(0, 0, 255)';
+const skyblue = 'rgb(135, 206, 235)';
+const yellow = 'rgb(255, 255, 0)';
+const ivory = 'rgb(255, 255, 240)';
+const purple = 'rgb(128, 0, 128)';
+const violet = 'rgb(238, 130, 238)';
+const pink = 'rgb(255, 192, 203)';
+const lightpink = 'rgb(255, 182, 193)';
+const colors = {
+  grey: {
+    classTest: grey,
+    attributeTest: grey,
+  },
+  red: {
+    classTest: red,
+    attributeTest: orangered,
+  },
+  green: {
+    classTest: green,
+    attributeTest: lightgreen,
+  },
+  blue: {
+    classTest: blue,
+    attributeTest: skyblue,
+  },
+  yellow: {
+    classTest: yellow,
+    attributeTest: ivory,
+  },
+  purple: {
+    classTest: purple,
+    attributeTest: violet,
+  },
+  pink: {
+    classTest: pink,
+    attributeTest: lightpink,
+  },
+};
+
+function testColor(test_name, color) {
+    test(function() {
+        assert_equals(getComputedStyle(subject).color, color);
+    }, test_name);
+}
+
+function testClassChange(element, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    element.classList.add('test');
+    testColor(`add .test to ${element.id}`, expectedColorForClassTest);
+    element.classList.remove('test');
+    testColor(`remove .test from ${element.id}`, grey);
+}
+
+function testElementInsertionBefore(beforeElement, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    const expectedColorForAttributeTest = colors[expectedColorName].attributeTest;
+    const newElement = document.createElement('div');
+    newElement.classList.add('test')
+
+    beforeElement.before(newElement);
+    testColor(`insert element div.test before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newElement.classList.remove('test');
+    testColor(`remove the class 'test' from the element inserted before ${beforeElement.id}`, grey);
+
+    newElement.classList.add('test');
+    testColor(`add the class 'test' again to the element inserted before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newElement.remove();
+    testColor(`remove element div.test before ${beforeElement.id}`, grey);
+
+    newElement.classList.remove('test');
+
+    beforeElement.before(newElement);
+    testColor(`insert element div before ${beforeElement.id}`, grey);
+
+    newElement.classList.add('test');
+    testColor(`add the class 'test' to the element inserted again before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newElement.classList.remove('test');
+    testColor(`remove the class 'test' from the element inserted again before ${beforeElement.id}`, grey);
+
+    newElement.remove();
+    testColor(`remove element div before ${beforeElement.id}`, grey);
+
+    newElement.setAttribute('test_attr', '');
+
+    beforeElement.before(newElement);
+    testColor(`insert element div[test_attr] before ${beforeElement.id}`, expectedColorForAttributeTest);
+
+    newElement.remove();
+    testColor(`remove element div[test_attr] before ${beforeElement.id}`, grey);
+}
+
+function testElementInsertionAfter(afterElement, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    const expectedColorForAttributeTest = colors[expectedColorName].attributeTest;
+    const newElement = document.createElement('div');
+    newElement.classList.add('test')
+
+    afterElement.after(newElement);
+    testColor(`insert element div.test after ${afterElement.id}`, expectedColorForClassTest);
+
+    newElement.classList.remove('test');
+    testColor(`remove the class 'test' from the element inserted after ${afterElement.id}`, grey);
+
+    newElement.classList.add('test');
+    testColor(`add the class 'test' again to the element inserted after ${afterElement.id}`, expectedColorForClassTest);
+
+    newElement.remove();
+    testColor(`remove element div.test after ${afterElement.id}`, grey);
+
+    newElement.classList.remove('test');
+
+    afterElement.after(newElement);
+    testColor(`insert element div after ${afterElement.id}`, grey);
+
+    newElement.classList.add('test');
+    testColor(`add the class 'test' to the element inserted again after ${afterElement.id}`, expectedColorForClassTest);
+
+    newElement.classList.remove('test');
+    testColor(`remove the class 'test' from the element inserted again after ${afterElement.id}`, grey);
+
+    newElement.remove();
+    testColor(`remove element div after ${afterElement.id}`, grey);
+
+    newElement.setAttribute('test_attr', '');
+
+    afterElement.after(newElement);
+    testColor(`insert element div[test_attr] after ${afterElement.id}`, expectedColorForAttributeTest);
+
+    newElement.remove();
+    testColor(`remove element div[test_attr] after ${afterElement.id}`, grey);
+}
+
+function testTreeInsertionBefore(beforeElement, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    const expectedColorForAttributeTest = colors[expectedColorName].attributeTest;
+    const newElement = document.createElement('div');
+    const newChild = document.createElement('div');
+    newChild.classList.add('test');
+    newElement.appendChild(newChild);
+
+    beforeElement.before(newElement);
+    testColor(`insert tree div>div.test before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newChild.classList.remove('test');
+    testColor(`remove the class 'test' from the element in the tree inserted before ${beforeElement.id}`, grey);
+
+    newChild.classList.add('test');
+    testColor(`add the class 'test' again to the element in the tree inserted before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newElement.remove();
+    testColor(`remove tree div>div.test before ${beforeElement.id}`, grey);
+
+    newChild.classList.remove('test');
+
+    beforeElement.before(newElement);
+    testColor(`insert tree div>div before ${beforeElement.id}`, grey);
+
+    newChild.classList.add('test');
+    testColor(`add the class 'test' to the element in the tree inserted again before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newChild.classList.remove('test');
+    testColor(`remove the class 'test' from the element in the tree inserted again before ${beforeElement.id}`, grey);
+
+    newElement.remove();
+    testColor(`remove tree div>div before ${beforeElement.id}`, grey);
+
+    newChild.setAttribute('test_attr', '');
+
+    beforeElement.before(newElement);
+    testColor(`insert element div>div[test_attr] before ${beforeElement.id}`, expectedColorForAttributeTest);
+
+    newElement.remove();
+    testColor(`remove element div>div[test_attr] before ${beforeElement.id}`, grey);
+}
+
+function testTreeInsertionAfter(afterElement, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    const expectedColorForAttributeTest = colors[expectedColorName].attributeTest;
+    const newElement = document.createElement('div');
+    const newChild = document.createElement('div');
+    newChild.classList.add('test');
+    newElement.appendChild(newChild);
+
+    afterElement.after(newElement);
+    testColor(`insert tree div>div.test after ${afterElement.id}`, expectedColorForClassTest);
+
+    newChild.classList.remove('test');
+    testColor(`remove the class 'test' from the element in the tree inserted after ${afterElement.id}`, grey);
+
+    newChild.classList.add('test');
+    testColor(`add the class 'test' again to the element in the tree inserted after ${afterElement.id}`, expectedColorForClassTest);
+
+    newElement.remove();
+    testColor(`remove tree div>div.test after ${afterElement.id}`, grey);
+
+    newChild.classList.remove('test');
+
+    afterElement.after(newElement);
+    testColor(`insert tree div>div after ${afterElement.id}`, grey);
+
+    newChild.classList.add('test');
+    testColor(`add the class 'test' to the element in the tree inserted again after ${afterElement.id}`, expectedColorForClassTest);
+
+    newChild.classList.remove('test');
+    testColor(`remove the class 'test' from the element in the tree inserted again after ${afterElement.id}`, grey);
+
+    newElement.remove();
+    testColor(`remove tree div>div after ${afterElement.id}`, grey);
+
+    newChild.setAttribute('test_attr', '');
+
+    afterElement.after(newElement);
+    testColor(`insert element div>div[test_attr] after ${afterElement.id}`, expectedColorForAttributeTest);
+
+    newElement.remove();
+    testColor(`remove element div>div[test_attr] after ${afterElement.id}`, grey);
+}
+
+testColor('Initial color', grey);
+
+testClassChange(subject_ancestor, ""grey"");
+testClassChange(subject_parent, ""green"");
+testClassChange(subject, ""green"");
+testClassChange(subject_child, ""red"");
+testClassChange(subject_descendant, ""red"");
+testClassChange(next_sibling, ""blue"");
+testClassChange(next_sibling_child, ""pink"");
+testClassChange(next_sibling_descendant, ""pink"");
+
+testElementInsertionBefore(subject_ancestor, ""grey"");
+testElementInsertionBefore(subject_parent, ""green"");
+testElementInsertionBefore(subject, ""green"");
+testElementInsertionBefore(subject_child, ""red"");
+testElementInsertionBefore(subject_descendant, ""red"");
+testElementInsertionBefore(next_sibling, ""blue"");
+testElementInsertionBefore(next_sibling_child, ""pink"");
+testElementInsertionBefore(next_sibling_descendant, ""pink"");
+
+testElementInsertionAfter(subject_ancestor, ""blue"");
+testElementInsertionAfter(subject_parent, ""blue"");
+testElementInsertionAfter(subject, ""green"");
+testElementInsertionAfter(subject_child, ""red"");
+testElementInsertionAfter(subject_descendant, ""red"");
+testElementInsertionAfter(next_sibling, ""yellow"");
+testElementInsertionAfter(next_sibling_child, ""pink"");
+testElementInsertionAfter(next_sibling_descendant, ""pink"");
+
+testTreeInsertionBefore(subject_ancestor, ""grey"");
+testTreeInsertionBefore(subject_parent, ""red"");
+testTreeInsertionBefore(subject, ""red"");
+testTreeInsertionBefore(subject_child, ""red"");
+testTreeInsertionBefore(subject_descendant, ""red"");
+testTreeInsertionBefore(next_sibling, ""pink"");
+testTreeInsertionBefore(next_sibling_child, ""pink"");
+testTreeInsertionBefore(next_sibling_descendant, ""pink"");
+
+testTreeInsertionAfter(subject_ancestor, ""pink"");
+testTreeInsertionAfter(subject_parent, ""pink"");
+testTreeInsertionAfter(subject, ""red"");
+testTreeInsertionAfter(subject_child, ""red"");
+testTreeInsertionAfter(subject_descendant, ""red"");
+testTreeInsertionAfter(next_sibling, ""purple"");
+testTreeInsertionAfter(next_sibling_child, ""pink"");
+testTreeInsertionAfter(next_sibling_descendant, ""pink"");
+
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-in-parent-position.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-in-parent-position.html
new file mode 100644
index 000000000000..dd1626f2cd59
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-in-parent-position.html
@@ -0,0 +1,300 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>CSS Selector Invalidation: :has() in parent position</title>
+<link rel=""author"" title=""Antti Koivisto"" href=""mailto:antti@apple.com"">
+<script src=""../../../resources/testharness.js""></script>
+<script src=""../../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<style>
+div, main { color: grey }
+div:has(.test) > #subject { color: red }
+div:has([test_attr]) > #subject { color: orangered }
+div:has(> .test) > #subject { color: green }
+div:has(> [test_attr]) > #subject { color: lightgreen }
+div:has(~ .test) >  #subject { color: yellow }
+div:has(~ [test_attr]) >  #subject { color: ivory }
+div:has(+ .test) > #subject { color: blue }
+div:has(+ [test_attr]) > #subject { color: skyblue }
+div:has(~ div .test) > #subject { color: purple }
+div:has(~ div [test_attr]) > #subject { color: violet }
+div:has(+ div .test) > #subject { color: pink }
+div:has(+ div [test_attr]) > #subject { color: lightpink }
+</style>
+
+<main id=main>
+    <div id=subject_ancestor>
+        <div id=subject_parent>
+            <div id=subject>
+                <div id=subject_child>
+                    <div id=subject_descendant></div>
+                </div>
+            </div>
+        </div>
+    </div>
+</main>
+
+<script>
+const grey = 'rgb(128, 128, 128)';
+const red = 'rgb(255, 0, 0)';
+const orangered = 'rgb(255, 69, 0)';
+const green = 'rgb(0, 128, 0)';
+const lightgreen = 'rgb(144, 238, 144)';
+const blue = 'rgb(0, 0, 255)';
+const skyblue = 'rgb(135, 206, 235)';
+const yellow = 'rgb(255, 255, 0)';
+const ivory = 'rgb(255, 255, 240)';
+const purple = 'rgb(128, 0, 128)';
+const violet = 'rgb(238, 130, 238)';
+const pink = 'rgb(255, 192, 203)';
+const lightpink = 'rgb(255, 182, 193)';
+const colors = {
+  grey: {
+    classTest: grey,
+    attributeTest: grey,
+  },
+  red: {
+    classTest: red,
+    attributeTest: orangered,
+  },
+  green: {
+    classTest: green,
+    attributeTest: lightgreen,
+  },
+  blue: {
+    classTest: blue,
+    attributeTest: skyblue,
+  },
+  yellow: {
+    classTest: yellow,
+    attributeTest: ivory,
+  },
+  purple: {
+    classTest: purple,
+    attributeTest: violet,
+  },
+  pink: {
+    classTest: pink,
+    attributeTest: lightpink,
+  },
+};
+
+function testColor(test_name, color) {
+    test(function() {
+        assert_equals(getComputedStyle(subject).color, color);
+    }, test_name);
+}
+
+function testClassChange(element, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    element.classList.add('test');
+    testColor(`add .test to ${element.id}`, expectedColorForClassTest);
+    element.classList.remove('test');
+    testColor(`remove .test from ${element.id}`, grey);
+}
+
+function testElementInsertionBefore(beforeElement, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    const expectedColorForAttributeTest = colors[expectedColorName].attributeTest;
+    const newElement = document.createElement('div');
+    newElement.classList.add('test');
+
+    beforeElement.before(newElement);
+    testColor(`insert element div.test before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newElement.classList.remove('test');
+    testColor(`remove the class 'test' from the element inserted before ${beforeElement.id}`, grey);
+
+    newElement.classList.add('test');
+    testColor(`add the class 'test' again to the element inserted before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newElement.remove();
+    testColor(`remove element div.test before ${beforeElement.id}`, grey);
+
+    newElement.classList.remove('test');
+
+    beforeElement.before(newElement);
+    testColor(`insert element div before ${beforeElement.id}`, grey);
+
+    newElement.classList.add('test');
+    testColor(`add the class 'test' to the element inserted again before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newElement.classList.remove('test');
+    testColor(`remove the class 'test' from the element inserted again before ${beforeElement.id}`, grey);
+
+    newElement.remove();
+    testColor(`remove element div before ${beforeElement.id}`, grey);
+
+    newElement.setAttribute('test_attr', '');
+
+    beforeElement.before(newElement);
+    testColor(`insert element div[test_attr] before ${beforeElement.id}`, expectedColorForAttributeTest);
+
+    newElement.remove();
+    testColor(`remove element div[test_attr] before ${beforeElement.id}`, grey);
+}
+
+function testElementInsertionAfter(afterElement, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    const expectedColorForAttributeTest = colors[expectedColorName].attributeTest;
+    const newElement = document.createElement('div');
+    newElement.classList.add('test');
+
+    afterElement.after(newElement);
+    testColor(`insert element div.test after ${afterElement.id}`, expectedColorForClassTest);
+
+    newElement.classList.remove('test');
+    testColor(`remove the class 'test' from the element inserted after ${afterElement.id}`, grey);
+
+    newElement.classList.add('test');
+    testColor(`add the class 'test' again to the element inserted after ${afterElement.id}`, expectedColorForClassTest);
+
+    newElement.remove();
+    testColor(`remove element div.test after ${afterElement.id}`, grey);
+
+    newElement.classList.remove('test');
+
+    afterElement.after(newElement);
+    testColor(`insert element div after ${afterElement.id}`, grey);
+
+    newElement.classList.add('test');
+    testColor(`add the class 'test' to the element inserted again after ${afterElement.id}`, expectedColorForClassTest);
+
+    newElement.classList.remove('test');
+    testColor(`remove the class 'test' from the element inserted again after ${afterElement.id}`, grey);
+
+    newElement.remove();
+    testColor(`remove element div after ${afterElement.id}`, grey);
+
+    newElement.setAttribute('test_attr', '');
+
+    afterElement.after(newElement);
+    testColor(`insert element div[test_attr] after ${afterElement.id}`, expectedColorForAttributeTest);
+
+    newElement.remove();
+    testColor(`remove element div[test_attr] after ${afterElement.id}`, grey);
+}
+
+function testTreeInsertionBefore(beforeElement, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    const expectedColorForAttributeTest = colors[expectedColorName].attributeTest;
+    const newElement = document.createElement('div');
+    const newChild = document.createElement('div');
+    newChild.classList.add('test');
+    newElement.appendChild(newChild);
+
+    beforeElement.before(newElement);
+    testColor(`insert tree div>div.test before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newChild.classList.remove('test');
+    testColor(`remove the class 'test' from the element in the tree inserted before ${beforeElement.id}`, grey);
+
+    newChild.classList.add('test');
+    testColor(`add the class 'test' again to the element in the tree inserted before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newElement.remove();
+    testColor(`remove tree div>div.test before ${beforeElement.id}`, grey);
+
+    newChild.classList.remove('test');
+
+    beforeElement.before(newElement);
+    testColor(`insert tree div>div before ${beforeElement.id}`, grey);
+
+    newChild.classList.add('test');
+    testColor(`add the class 'test' to the element in the tree inserted again before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newChild.classList.remove('test');
+    testColor(`remove the class 'test' from the element in the tree inserted again before ${beforeElement.id}`, grey);
+
+    newElement.remove();
+    testColor(`remove tree div>div before ${beforeElement.id}`, grey);
+
+    newChild.setAttribute('test_attr', '');
+
+    beforeElement.before(newElement);
+    testColor(`insert element div>div[test_attr] before ${beforeElement.id}`, expectedColorForAttributeTest);
+
+    newElement.remove();
+    testColor(`remove element div>div[test_attr] before ${beforeElement.id}`, grey);
+}
+
+function testTreeInsertionAfter(afterElement, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    const expectedColorForAttributeTest = colors[expectedColorName].attributeTest;
+    const newElement = document.createElement('div');
+    const newChild = document.createElement('div');
+    newChild.classList.add('test');
+    newElement.appendChild(newChild);
+
+    afterElement.after(newElement);
+    testColor(`insert tree div>div.test after ${afterElement.id}`, expectedColorForClassTest);
+
+    newChild.classList.remove('test');
+    testColor(`remove the class 'test' from the element in the tree inserted after ${afterElement.id}`, grey);
+
+    newChild.classList.add('test');
+    testColor(`add the class 'test' again to the element in the tree inserted after ${afterElement.id}`, expectedColorForClassTest);
+
+    newElement.remove();
+    testColor(`remove tree div>div.test after ${afterElement.id}`, grey);
+
+    newChild.classList.remove('test');
+
+    afterElement.after(newElement);
+    testColor(`insert tree div>div after ${afterElement.id}`, grey);
+
+    newChild.classList.add('test');
+    testColor(`add the class 'test' to the element in the tree inserted again after ${afterElement.id}`, expectedColorForClassTest);
+
+    newChild.classList.remove('test');
+    testColor(`remove the class 'test' from the element in the tree inserted again after ${afterElement.id}`, grey);
+
+    newElement.remove();
+    testColor(`remove tree div>div after ${afterElement.id}`, grey);
+
+    newChild.setAttribute('test_attr', '');
+
+    afterElement.after(newElement);
+    testColor(`insert element div>div[test_attr] after ${afterElement.id}`, expectedColorForAttributeTest);
+
+    newElement.remove();
+    testColor(`remove element div>div[test_attr] after ${afterElement.id}`, grey);
+}
+
+testColor('Initial color', grey);
+
+testClassChange(subject_ancestor, ""grey"");
+testClassChange(subject_parent, ""grey"");
+testClassChange(subject, ""green"");
+testClassChange(subject_child, ""red"");
+testClassChange(subject_descendant, ""red"");
+
+testElementInsertionBefore(subject_ancestor, ""grey"");
+testElementInsertionBefore(subject_parent, ""grey"");
+testElementInsertionBefore(subject, ""green"");
+testElementInsertionBefore(subject_child, ""red"");
+testElementInsertionBefore(subject_descendant, ""red"");
+
+testElementInsertionAfter(subject_ancestor, ""grey"");
+testElementInsertionAfter(subject_parent, ""blue"");
+testElementInsertionAfter(subject, ""green"");
+testElementInsertionAfter(subject_child, ""red"");
+testElementInsertionAfter(subject_descendant, ""red"");
+
+testTreeInsertionBefore(subject_ancestor, ""grey"");
+testTreeInsertionBefore(subject_parent, ""grey"");
+testTreeInsertionBefore(subject, ""red"");
+testTreeInsertionBefore(subject_child, ""red"");
+testTreeInsertionBefore(subject_descendant, ""red"");
+
+testTreeInsertionAfter(subject_ancestor, ""grey"");
+testTreeInsertionAfter(subject_parent, ""pink"");
+testTreeInsertionAfter(subject, ""red"");
+testTreeInsertionAfter(subject_child, ""red"");
+testTreeInsertionAfter(subject_descendant, ""red"");
+
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-in-sibling-position.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-in-sibling-position.html
new file mode 100644
index 000000000000..6a6d93c1c3d9
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-in-sibling-position.html
@@ -0,0 +1,312 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>CSS Selector Invalidation: :has() in sibling position</title>
+<link rel=""author"" title=""Antti Koivisto"" href=""mailto:antti@apple.com"">
+<script src=""../../../resources/testharness.js""></script>
+<script src=""../../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<style>
+div, main { color: grey }
+div:has(.test) ~ #subject { color: red }
+div:has([test_attr]) ~ #subject { color: orangered }
+div:has(> .test) ~ #subject { color: green }
+div:has(> [test_attr]) ~ #subject { color: lightgreen }
+div:has(~ .test) ~ #subject { color: yellow }
+div:has(~ [test_attr]) ~ #subject { color: ivory }
+div:has(+ .test) ~ #subject { color: blue }
+div:has(+ [test_attr]) ~ #subject { color: skyblue }
+div:has(~ div .test) ~ #subject { color: purple }
+div:has(~ div [test_attr]) ~ #subject { color: violet }
+div:has(+ div .test) ~ #subject { color: pink }
+div:has(+ div [test_attr]) ~ #subject { color: lightpink }
+</style>
+
+<main id=main>
+    <div id=previous_sibling>
+        <div id=previous_sibling_child>
+            <div id=previous_sibling_descendant></div>
+        </div>
+    </div>
+    <div id=subject></div>
+    <div id=next_sibling>
+        <div id=next_sibling_child>
+            <div id=next_sibling_descendant></div>
+        </div>
+    </div>
+</main>
+
+<script>
+const grey = 'rgb(128, 128, 128)';
+const red = 'rgb(255, 0, 0)';
+const orangered = 'rgb(255, 69, 0)';
+const green = 'rgb(0, 128, 0)';
+const lightgreen = 'rgb(144, 238, 144)';
+const blue = 'rgb(0, 0, 255)';
+const skyblue = 'rgb(135, 206, 235)';
+const yellow = 'rgb(255, 255, 0)';
+const ivory = 'rgb(255, 255, 240)';
+const purple = 'rgb(128, 0, 128)';
+const violet = 'rgb(238, 130, 238)';
+const pink = 'rgb(255, 192, 203)';
+const lightpink = 'rgb(255, 182, 193)';
+const colors = {
+  grey: {
+    classTest: grey,
+    attributeTest: grey,
+  },
+  red: {
+    classTest: red,
+    attributeTest: orangered,
+  },
+  green: {
+    classTest: green,
+    attributeTest: lightgreen,
+  },
+  blue: {
+    classTest: blue,
+    attributeTest: skyblue,
+  },
+  yellow: {
+    classTest: yellow,
+    attributeTest: ivory,
+  },
+  purple: {
+    classTest: purple,
+    attributeTest: violet,
+  },
+  pink: {
+    classTest: pink,
+    attributeTest: lightpink,
+  },
+};
+
+function testColor(test_name, color) {
+    test(function() {
+        assert_equals(getComputedStyle(subject).color, color);
+    }, test_name);
+}
+
+function testClassChange(element, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    element.classList.add('test');
+    testColor(`add .test to ${element.id}`, expectedColorForClassTest);
+    element.classList.remove('test');
+    testColor(`remove .test from ${element.id}`, grey);
+}
+
+function testElementInsertionBefore(beforeElement, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    const expectedColorForAttributeTest = colors[expectedColorName].attributeTest;
+    const newElement = document.createElement('div');
+    newElement.classList.add('test')
+
+    beforeElement.before(newElement);
+    testColor(`insert element div.test before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newElement.classList.remove('test');
+    testColor(`remove the class 'test' from the element inserted before ${beforeElement.id}`, grey);
+
+    newElement.classList.add('test');
+    testColor(`add the class 'test' again to the element inserted before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newElement.remove();
+    testColor(`remove element div.test before ${beforeElement.id}`, grey);
+
+    newElement.classList.remove('test')
+
+    beforeElement.before(newElement);
+    testColor(`insert element div before ${beforeElement.id}`, grey);
+
+    newElement.classList.add('test');
+    testColor(`add the class 'test' to the element inserted again before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newElement.classList.remove('test');
+    testColor(`remove the class 'test' from the element inserted again before ${beforeElement.id}`, grey);
+
+    newElement.remove();
+    testColor(`remove element div before ${beforeElement.id}`, grey);
+
+    newElement.setAttribute('test_attr', '');
+
+    beforeElement.before(newElement);
+    testColor(`insert element div[test_attr] before ${beforeElement.id}`, expectedColorForAttributeTest);
+
+    newElement.remove();
+    testColor(`remove element div[test_attr] before ${beforeElement.id}`, grey);
+}
+
+function testElementInsertionAfter(afterElement, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    const expectedColorForAttributeTest = colors[expectedColorName].attributeTest;
+    const newElement = document.createElement('div');
+    newElement.classList.add('test')
+
+    afterElement.after(newElement);
+    testColor(`insert element div.test after ${afterElement.id}`, expectedColorForClassTest);
+
+    newElement.classList.remove('test');
+    testColor(`remove the class 'test' from the element inserted after ${afterElement.id}`, grey);
+
+    newElement.classList.add('test');
+    testColor(`add the class 'test' again to the element inserted after ${afterElement.id}`, expectedColorForClassTest);
+
+    newElement.remove();
+    testColor(`remove element div.test after ${afterElement.id}`, grey);
+
+    newElement.classList.remove('test');
+
+    afterElement.after(newElement);
+    testColor(`insert element div after ${afterElement.id}`, grey);
+
+    newElement.classList.add('test');
+    testColor(`add the class 'test' to the element inserted again after ${afterElement.id}`, expectedColorForClassTest);
+
+    newElement.classList.remove('test');
+    testColor(`remove the class 'test' from the element inserted again after ${afterElement.id}`, grey);
+
+    newElement.remove();
+    testColor(`remove element div after ${afterElement.id}`, grey);
+
+    newElement.setAttribute('test_attr', '');
+
+    afterElement.after(newElement);
+    testColor(`insert element div[test_attr] after ${afterElement.id}`, expectedColorForAttributeTest);
+
+    newElement.remove();
+    testColor(`remove element div[test_attr] after ${afterElement.id}`, grey);
+}
+
+function testTreeInsertionBefore(beforeElement, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    const expectedColorForAttributeTest = colors[expectedColorName].attributeTest;
+    const newElement = document.createElement('div');
+    const newChild = document.createElement('div');
+    newChild.classList.add('test');
+    newElement.appendChild(newChild);
+
+    beforeElement.before(newElement);
+    testColor(`insert tree div>div.test before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newChild.classList.remove('test');
+    testColor(`remove the class 'test' from the element in the tree inserted before ${beforeElement.id}`, grey);
+
+    newChild.classList.add('test');
+    testColor(`add the class 'test' again to the element in the tree inserted before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newElement.remove();
+    testColor(`remove tree div>div.test before ${beforeElement.id}`, grey);
+
+    newChild.classList.remove('test');
+
+    beforeElement.before(newElement);
+    testColor(`insert tree div>div before ${beforeElement.id}`, grey);
+
+    newChild.classList.add('test');
+    testColor(`add the class 'test' to the element in the tree inserted again before ${beforeElement.id}`, expectedColorForClassTest);
+
+    newChild.classList.remove('test');
+    testColor(`remove the class 'test' from the element in the tree inserted again before ${beforeElement.id}`, grey);
+
+    newElement.remove();
+    testColor(`remove tree div>div before ${beforeElement.id}`, grey);
+
+    newChild.setAttribute('test_attr', '');
+
+    beforeElement.before(newElement);
+    testColor(`insert element div>div[test_attr] before ${beforeElement.id}`, expectedColorForAttributeTest);
+
+    newElement.remove();
+    testColor(`remove element div>div[test_attr] before ${beforeElement.id}`, grey);
+}
+
+function testTreeInsertionAfter(afterElement, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    const expectedColorForAttributeTest = colors[expectedColorName].attributeTest;
+    const newElement = document.createElement('div');
+    const newChild = document.createElement('div');
+    newChild.classList.add('test');
+    newElement.appendChild(newChild);
+
+    afterElement.after(newElement);
+    testColor(`insert tree div>div.test after ${afterElement.id}`, expectedColorForClassTest);
+
+    newChild.classList.remove('test');
+    testColor(`remove the class 'test' from the element in the tree inserted after ${afterElement.id}`, grey);
+
+    newChild.classList.add('test');
+    testColor(`add the class 'test' again to the element in the tree inserted after ${afterElement.id}`, expectedColorForClassTest);
+
+    newElement.remove();
+    testColor(`remove tree div>div.test after ${afterElement.id}`, grey);
+
+    newChild.classList.remove('test');
+
+    afterElement.after(newElement);
+    testColor(`insert tree div>div after ${afterElement.id}`, grey);
+
+    newChild.classList.add('test');
+    testColor(`add the class 'test' to the element in the tree inserted again after ${afterElement.id}`, expectedColorForClassTest);
+
+    newChild.classList.remove('test');
+    testColor(`remove the class 'test' from the element in the tree inserted again after ${afterElement.id}`, grey);
+
+    newElement.remove();
+    testColor(`remove tree div>div after ${afterElement.id}`, grey);
+
+    newChild.setAttribute('test_attr', '');
+
+    afterElement.after(newElement);
+    testColor(`insert element div>div[test_attr] after ${afterElement.id}`, expectedColorForAttributeTest);
+
+    newElement.remove();
+    testColor(`remove element div>div[test_attr] after ${afterElement.id}`, grey);
+}
+
+testColor('Initial color', grey);
+
+testClassChange(previous_sibling, ""grey"");
+testClassChange(previous_sibling_child, ""green"");
+testClassChange(previous_sibling_descendant, ""red"");
+testClassChange(subject, ""blue"");
+testClassChange(next_sibling, ""yellow"");
+testClassChange(next_sibling_child, ""purple"");
+testClassChange(next_sibling_descendant, ""purple"");
+
+testElementInsertionBefore(previous_sibling, ""grey"");
+testElementInsertionBefore(previous_sibling_child, ""green"");
+testElementInsertionBefore(previous_sibling_descendant, ""red"");
+testElementInsertionBefore(subject, ""blue"");
+testElementInsertionBefore(next_sibling, ""yellow"");
+testElementInsertionBefore(next_sibling_child, ""purple"");
+testElementInsertionBefore(next_sibling_descendant, ""purple"");
+
+testElementInsertionAfter(previous_sibling, ""blue"");
+testElementInsertionAfter(previous_sibling_child, ""green"");
+testElementInsertionAfter(previous_sibling_descendant, ""red"");
+testElementInsertionAfter(subject, ""yellow"");
+testElementInsertionAfter(next_sibling, ""yellow"");
+testElementInsertionAfter(next_sibling_child, ""purple"");
+testElementInsertionAfter(next_sibling_descendant, ""purple"");
+
+testTreeInsertionBefore(previous_sibling, ""green"");
+testTreeInsertionBefore(previous_sibling_child, ""red"");
+testTreeInsertionBefore(previous_sibling_descendant, ""red"");
+testTreeInsertionBefore(subject, ""pink"");
+testTreeInsertionBefore(next_sibling, ""purple"");
+testTreeInsertionBefore(next_sibling_child, ""purple"");
+testTreeInsertionBefore(next_sibling_descendant, ""purple"");
+
+testTreeInsertionAfter(previous_sibling, ""pink"");
+testTreeInsertionAfter(previous_sibling_child, ""red"");
+testTreeInsertionAfter(previous_sibling_descendant, ""red"");
+testTreeInsertionAfter(subject, ""purple"");
+testTreeInsertionAfter(next_sibling, ""purple"");
+testTreeInsertionAfter(next_sibling_child, ""purple"");
+testTreeInsertionAfter(next_sibling_descendant, ""purple"");
+
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-invalidation-after-removing-non-first-element.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-invalidation-after-removing-non-first-element.html
new file mode 100644
index 000000000000..1daafad3779f
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-invalidation-after-removing-non-first-element.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>:has() invalidation after removing non-first element</title>
+<link rel=""author"" title=""Byungwoo Lee"" href=""mailto:blee@igalia.com"">
+<script src=""../../../resources/testharness.js""></script>
+<script src=""../../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<style>
+div, main { color: grey }
+#subject:has(descendant) { color: red }
+</style>
+<main id=""main"">
+  <div id=""subject"">
+    <div></div>
+    <descendant id=""descendant""></descendant>
+  </div>
+</main>
+<script>
+  let grey = 'rgb(128, 128, 128)';
+  let red = 'rgb(255, 0, 0)';
+
+  function test_div(test_name, el, color) {
+    test(function() {
+      assert_equals(getComputedStyle(el).color, color);
+    }, test_name + ': div#' + el.id + '.color');
+  }
+
+  test_div('initial_color', subject, red);
+  subject.removeChild(descendant);
+  test_div('remove descendant', subject, grey);
+</script>
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-invalidation-for-wiping-an-element.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-invalidation-for-wiping-an-element.html
new file mode 100644
index 000000000000..ba94924d01fb
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-invalidation-for-wiping-an-element.html
@@ -0,0 +1,42 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>:has() invalidation for wiping an element by means of innerHTML</title>
+<link rel=""author"" title=""Byungwoo Lee"" href=""mailto:blee@igalia.com"">
+<script src=""../../../resources/testharness.js""></script>
+<script src=""../../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<style>
+div, main { color: grey }
+.subject:has(.descendant) { color: green}
+</style>
+<main id=main>
+  <div id=""subject"" class=""subject""></div>
+</main>
+<script>
+  let grey = 'rgb(128, 128, 128)';
+  let green = 'rgb(0, 128, 0)';
+
+  function test_div(test_name, el, color) {
+    test(function() {
+      assert_equals(getComputedStyle(el).color, color);
+    }, test_name + ': div#' + el.id + '.color');
+  }
+
+  test_div('initial color', subject, grey);
+
+  subject.innerHTML = ""This is a text <div><div class='descendant'></div></div>"";
+
+  test_div('color after inserting text and div > .descendant', subject, green);
+
+  subject.innerHTML = ""This is a text"";
+
+  test_div('color after wiping #child to remove div > .descendant', subject, grey);
+
+  subject.innerHTML = ""<div id='child'> This is a text <div class='descendant'></div></div>"";
+
+  test_div('color after inserting text and #child > .descendant', subject, green);
+
+  child.innerHTML = ""This is a text"";
+
+  test_div('color after wiping #child to remove .descendant', subject, grey);
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-sibling-insertion-removal.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-sibling-insertion-removal.html
new file mode 100644
index 000000000000..c063e45916c5
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-sibling-insertion-removal.html
@@ -0,0 +1,209 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>:has() invalidation for sibling insertion and removal</title>
+<link rel=""author"" title=""Byungwoo Lee"" href=""mailto:blee@igalia.com"">
+<script src=""../../../resources/testharness.js""></script>
+<script src=""../../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<style>
+div, main { color: grey }
+#subject1:has(+ #sibling1_1 + #sibling1_2) { color: red }
+#subject2:has(+ #sibling2_2) { color: green }
+#subject3:has(+ #sibling3_1 + #sibling3_2 > #siblingchild3_2_1) { color: blue }
+#subject4:has(+ #sibling4_2 > #siblingchild4_2_1) { color: yellow }
+#subject5:has(+ #sibling5_1 + #sibling5_2) { color: red }
+#subject6:has(+ #sibling6_2) { color: green }
+#subject7:has(+ #sibling7_1 + #sibling7_2 > #siblingchild7_2_1) { color: blue }
+#subject8:has(+ #sibling8_2 > #siblingchild8_2_1) { color: yellow }
+#subject9:has(+ #sibling9_1 + #sibling9_2 ~ #sibling9_3) { color: red }
+#subject10:has(+ #sibling10_2 ~ #sibling10_3) { color: green }
+#subject11:has(+ #sibling11_1 + #sibling11_2 ~ #sibling11_3 > #siblingchild11_3_1) { color: blue }
+#subject12:has(+ #sibling12_2 ~ #sibling12_3 > #siblingchild12_3_1) { color: yellow }
+.sibling13:has(~ .sibling13) { color: green }
+#subject14:has(~ #sibling14_1 ~ #sibling14_2 ~ #sibling14_3) { color: green }
+</style>
+
+<main id=""main"">
+  <div id=""parent1"">
+    <div id=""subject1""></div>
+    <div id=""sibling1_2""></div>
+    <div id=""sibling1_3""></div>
+  </div>
+  <div id=""parent2"">
+    <div id=""subject2""></div>
+    <div id=""sibling2_1""></div>
+    <div id=""sibling2_2""></div>
+    <div id=""sibling2_3""""></div>
+  </div>
+  <div id=""parent3"">
+    <div id=""subject3""></div>
+    <div id=""sibling3_2"">
+      <div id=""siblingchild3_2_1""></div>
+    </div>
+    <div id=""sibling3_3""></div>
+  </div>
+  <div id=""parent4"">
+    <div id=""subject4""></div>
+    <div id=""sibling4_1""></div>
+    <div id=""sibling4_2"">
+      <div id=""siblingchild4_2_1""></div>
+    </div>
+    <div id=""sibling4_3""></div>
+  </div>
+  <div id=""parent5"">
+    <div id=""subject5""></div>
+    <div id=""sibling5_1""></div>
+    <div id=""sibling5_2""></div>
+    <div id=""sibling5_3""""></div>
+  </div>
+  <div id=""parent6"">
+    <div id=""subject6""></div>
+    <div id=""sibling6_2""></div>
+    <div id=""sibling6_3""></div>
+  </div>
+  <div id=""parent7"">
+    <div id=""subject7""></div>
+    <div id=""sibling7_1""></div>
+    <div id=""sibling7_2"">
+      <div id=""siblingchild7_2_1""></div>
+    </div>
+    <div id=""sibling7_3""></div>
+  <div id=""parent8"">
+    <div id=""subject8""></div>
+    <div id=""sibling8_2"">
+      <div id=""siblingchild8_2_1""></div>
+    </div>
+    <div id=""sibling8_3""></div>
+  </div>
+  <div id=""parent9"">
+    <div id=""subject9""></div>
+    <div id=""sibling9_2""></div>
+    <div id=""sibling9_3""></div>
+    <div id=""sibling9_4""></div>
+  </div>
+  <div id=""parent10"">
+    <div id=""subject10""></div>
+    <div id=""sibling10_1""></div>
+    <div id=""sibling10_2""></div>
+    <div id=""sibling10_3""""></div>
+    <div id=""sibling10_4""""></div>
+  </div>
+  <div id=""parent11"">
+    <div id=""subject11""></div>
+    <div id=""sibling11_2""></div>
+    <div id=""sibling11_3"">
+      <div id=""siblingchild11_3_1""></div>
+    </div>
+    <div id=""sibling11_4""></div>
+  </div>
+  <div id=""parent12"">
+    <div id=""subject12""></div>
+    <div id=""sibling12_1""></div>
+    <div id=""sibling12_2""></div>
+    <div id=""sibling12_3"">
+      <div id=""siblingchild12_3_1""></div>
+    </div>
+    <div id=""sibling12_4""></div>
+  </div>
+  <div id=""parent13"">
+    <div class=""sibling13""></div>
+    <div id=""subject13"" class=""sibling13""></div>
+  </div>
+  <div id=""parent14"">
+    <div id=""subject14""></div>
+    <div id=""sibling14_1""></div>
+    <div id=""sibling14_2""></div>
+    <div id=""sibling14_3""></div>
+  </div>
+</main>
+<script>
+
+const grey = 'rgb(128, 128, 128)';
+const red = 'rgb(255, 0, 0)';
+const green = 'rgb(0, 128, 0)';
+const blue = 'rgb(0, 0, 255)';
+const yellow = 'rgb(255, 255, 0)';
+
+function testColor(test_name, element, color) {
+  test(function() {
+    assert_equals(getComputedStyle(element).color, color);
+  }, test_name);
+}
+
+function insertBefore(parent, reference, child_id) {
+  var child = document.createElement(""div"");
+  child.id = child_id;
+  parent.insertBefore(child, reference);
+}
+
+testColor(`subject1: initial color should be ${grey}`, subject1, grey);
+insertBefore(parent1, sibling1_2, ""sibling1_1"");
+testColor(`subject1: color after #sibling1_1 inserted should be ${red}`,
+          subject1, red);
+
+testColor(`subject2: initial color should be ${grey}`, subject2, grey);
+sibling2_1.remove();
+testColor(`subject2: color after #sibling2_1 removed should be ${green}`,
+          subject2, green);
+
+testColor(`subject3: initial color should be ${grey}`, subject3, grey);
+insertBefore(parent3, sibling3_2, ""sibling3_1"");
+testColor(`subject3: color after #sibling3_1 inserted should be ${blue}`,
+          subject3, blue);
+
+testColor(`subject4: initial color should be ${grey}`, subject4, grey);
+sibling4_1.remove();
+testColor(`subject4: color after #sibling4_1 removed should be ${yellow}`,
+          subject4, yellow);
+
+testColor(`subject5: initial color should be ${red}`, subject5, red);
+sibling5_1.remove();
+testColor(`subject5: color after #sibling5_1 removed should be ${grey}`,
+          subject5, grey);
+
+testColor(`subject6: initial color should be ${green}`, subject6, green);
+insertBefore(parent6, sibling6_2, ""sibling6_1"");
+testColor(`subject6: color after #sibling6_1 inserted should be ${grey}`,
+          subject6, grey);
+
+testColor(`subject7: initial color should be ${blue}`, subject7, blue);
+sibling7_1.remove();
+testColor(`subject7: color after #sibling7_1 removed should be ${grey}`,
+          subject7, grey);
+
+testColor(`subject8: initial color should be ${yellow}`, subject8, yellow);
+insertBefore(parent8, sibling8_2, ""sibling8_1"");
+testColor(`subject8: color after #sibling8_1 inserted should be ${grey}`,
+          subject8, grey);
+
+testColor(`subject9: initial color should be ${grey}`, subject9, grey);
+insertBefore(parent9, sibling9_2, ""sibling9_1"");
+testColor(`subject9: color after #sibling9_1 inserted should be ${red}`,
+          subject1, red);
+
+testColor(`subject10: initial color should be ${grey}`, subject10, grey);
+sibling10_1.remove();
+testColor(`subject10: color after #sibling10_1 removed should be ${green}`,
+          subject10, green);
+
+testColor(`subject11: initial color should be ${grey}`, subject11, grey);
+insertBefore(parent11, sibling11_2, ""sibling11_1"");
+testColor(`subject11: color after #sibling11_1 inserted should be ${blue}`,
+          subject11, blue);
+
+testColor(`subject12: initial color should be ${grey}`, subject12, grey);
+sibling12_1.remove();
+testColor(`subject12: color after #sibling12_1 removed should be ${yellow}`,
+          subject12, yellow);
+
+testColor(`subject13: initial color should be ${grey}`, subject13, grey);
+const d = document.createElement(""div"");
+d.classList.add(""sibling13"");
+parent13.appendChild(d);
+testColor(`subject13: color after #sibling12_1 removed should be ${green}`,
+          subject13, green);
+
+testColor(`subject14: initial color should be ${green}`, subject14, green);
+sibling14_2.remove();
+testColor(`subject14: color after #sibling14_2 removed should be ${grey}`, subject14, grey);
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-sibling.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-sibling.html
new file mode 100644
index 000000000000..952388f5c8aa
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-sibling.html
@@ -0,0 +1,149 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>CSS Selector Invalidation: :has() with sibling combinator argument</title>
+<link rel=""author"" title=""Antti Koivisto"" href=""mailto:antti@apple.com"">
+<script src=""../../../resources/testharness.js""></script>
+<script src=""../../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<style>
+div, main { color: grey }
+#subject:has(~ .test) { color: red }
+#subject:has(+ .test) { color: green }
+#subject:has(~ div .test) { color: blue }
+#subject:has(~ div > .test) { color: purple }
+#subject:has(+ div .test) { color: yellow }
+#subject:has(+ div > .test) { color: pink }
+</style>
+
+<main id=main>
+    <div id=subject></div>
+    <div id=first_sibling>
+        <div id=first_sibling_child>
+            <div id=first_sibling_descendant></div>
+        </div>
+    </div>
+    <div id=second_sibling></div>
+    <div id=third_sibling>
+        <div id=third_sibling_child>
+            <div id=third_sibling_descendant></div>
+        </div>
+    </div>
+</main>
+<script>
+
+const grey = 'rgb(128, 128, 128)';
+const red = 'rgb(255, 0, 0)';
+const green = 'rgb(0, 128, 0)';
+const blue = 'rgb(0, 0, 255)';
+const yellow = 'rgb(255, 255, 0)';
+const purple = 'rgb(128, 0, 128)';
+const pink = 'rgb(255, 192, 203)';
+
+function testColor(test_name, color) {
+    test(function() {
+        assert_equals(getComputedStyle(subject).color, color);
+    }, test_name);
+}
+
+function testClassChange(element, expectedColor)
+{
+    element.classList.add('test');
+    testColor(`add .test to ${element.id}`, expectedColor);
+    element.classList.remove('test');
+    testColor(`remove .test from ${element.id}`, grey);
+}
+
+function testElementInsertionBefore(beforeElement, expectedColor)
+{
+    const newElement = document.createElement('div');
+    newElement.classList.add('test')
+
+    beforeElement.before(newElement);
+    testColor(`insert element div.test before ${beforeElement.id}`, expectedColor);
+
+    newElement.remove();
+    testColor(`remove element div.test before ${beforeElement.id}`, grey);
+}
+
+function testElementInsertionAfter(afterElement, expectedColor)
+{
+    const newElement = document.createElement('div');
+    newElement.classList.add('test')
+
+    afterElement.after(newElement);
+    testColor(`insert element div.test after ${afterElement.id}`, expectedColor);
+
+    newElement.remove();
+    testColor(`remove element div.test after ${afterElement.id}`, grey);
+}
+
+function testTreeInsertionBefore(beforeElement, expectedColor)
+{
+    const newElement = document.createElement('div');
+    const newChild = document.createElement('div');
+    newChild.classList.add('test');
+    newElement.appendChild(newChild);
+
+    beforeElement.before(newElement);
+    testColor(`insert tree div>div.test before ${beforeElement.id}`, expectedColor);
+
+    newElement.remove();
+    testColor(`remove tree div>div.test before ${beforeElement.id}`, grey);
+}
+
+function testTreeInsertionAfter(afterElement, expectedColor)
+{
+    const newElement = document.createElement('div');
+    const newChild = document.createElement('div');
+    newChild.classList.add('test');
+    newElement.appendChild(newChild);
+
+    afterElement.after(newElement);
+    testColor(`insert tree div>div.test after ${afterElement.id}`, expectedColor);
+
+    newElement.remove();
+    testColor(`remove tree div>div.test after ${afterElement.id}`, grey);
+}
+
+testColor('initial_color', grey);
+
+testClassChange(first_sibling, green);
+testClassChange(second_sibling, red);
+testClassChange(third_sibling, red);
+testClassChange(first_sibling_child, pink);
+testClassChange(first_sibling_descendant, yellow);
+testClassChange(third_sibling_child, purple);
+testClassChange(third_sibling_descendant, blue);
+
+testElementInsertionBefore(first_sibling, green);
+testElementInsertionBefore(second_sibling, red);
+testElementInsertionBefore(third_sibling, red);
+testElementInsertionBefore(first_sibling_child, pink);
+testElementInsertionBefore(first_sibling_descendant, yellow);
+testElementInsertionBefore(third_sibling_child, purple);
+testElementInsertionBefore(third_sibling_descendant, blue);
+
+testElementInsertionAfter(first_sibling, red);
+testElementInsertionAfter(second_sibling, red);
+testElementInsertionAfter(third_sibling, red);
+testElementInsertionAfter(first_sibling_child, pink);
+testElementInsertionAfter(first_sibling_descendant, yellow);
+testElementInsertionAfter(third_sibling_child, purple);
+testElementInsertionAfter(third_sibling_descendant, blue);
+
+testTreeInsertionBefore(first_sibling, pink);
+testTreeInsertionBefore(second_sibling, purple);
+testTreeInsertionBefore(third_sibling, purple);
+testTreeInsertionBefore(first_sibling_child, yellow);
+testTreeInsertionBefore(first_sibling_descendant, yellow);
+testTreeInsertionBefore(third_sibling_child, blue);
+testTreeInsertionBefore(third_sibling_descendant, blue);
+
+testTreeInsertionAfter(first_sibling, purple);
+testTreeInsertionAfter(second_sibling, purple);
+testTreeInsertionAfter(third_sibling, purple);
+testTreeInsertionAfter(first_sibling_child, yellow);
+testTreeInsertionAfter(first_sibling_descendant, yellow);
+testTreeInsertionAfter(third_sibling_child, blue);
+testTreeInsertionAfter(third_sibling_descendant, blue);
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-side-effect.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-side-effect.html
new file mode 100644
index 000000000000..4c1f923f4e2b
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-side-effect.html
@@ -0,0 +1,43 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>CSS Selector Invalidation: Invalidate :has() as result of insertion/removal</title>
+<link rel=""author"" title=""David Shin"" href=""mailto:dshin@mozilla.com"">
+<link rel=""author"" title=""Emilio Cobos Álvarez"" href=""mailto:emilio@crisal.io"">
+<script src=""../../../resources/testharness.js""></script>
+<script src=""../../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<style>
+div, main { color: grey }
+#subject:has(+ #next_sibling) { color: red; }
+#prev_sibling:has(+ #subject + #next_sibling) { color: green; }
+</style>
+
+<main id=main>
+  <div id=prev_sibling></div>
+  <div id=subject></div>
+  <div id=blocks_match></div>
+  <div id=next_sibling></div>
+</main>
+
+<script>
+const grey = 'rgb(128, 128, 128)';
+const red = 'rgb(255, 0, 0)';
+const green = 'rgb(0, 128, 0)';
+
+function testColors(test_name, subject_color, prev_sibling_color) {
+    test(function() {
+        assert_equals(getComputedStyle(subject).color, subject_color);
+        assert_equals(getComputedStyle(prev_sibling).color, prev_sibling_color);
+    }, test_name);
+}
+
+testColors('Initial colors', grey, grey);
+
+const d = blocks_match;
+d.remove();
+
+testColors('Matches after #blocks_match removed', red, green);
+subject.after(d);
+
+testColors('Does not match after #blocks_match added', grey, grey);
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-unstyled.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-unstyled.html
new file mode 100644
index 000000000000..60ef9dc97a79
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-unstyled.html
@@ -0,0 +1,77 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>CSS Selector Invalidation: :has() affected by unstyled elements</title>
+<link rel=""author"" title=""David Shin"" href=""mailto:dshin@mozilla.com"">
+<link rel=""author"" title=""Emilio Cobos Álvarez"" href=""mailto:emilio@crisal.io"">
+<script src=""../../../resources/testharness.js""></script>
+<script src=""../../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<style>
+div, main { color: grey }
+.none { display: none; }
+#subject:has(.test) { color: red; }
+#subject:has(~ #sibling .test) { color: green; }
+#subject:has(:is(.test_inner #subject_descendant)) { color: blue; }
+#subject:has(~ #sibling :is(.test_inner #sibling_descendant)) { color: yellow; }
+</style>
+
+<main id=main>
+  <div id=subject>
+    <div id=subject_child class=""none"">
+      <div id=subject_descendant></div>
+    </div>
+  </div>
+  <div id=sibling class=""none"">
+    <div id=sibling_child>
+      <div id=sibling_descendant></div>
+    </div>
+  </div>
+</main>
+
+<script>
+const grey = 'rgb(128, 128, 128)';
+const red = 'rgb(255, 0, 0)';
+const green = 'rgb(0, 128, 0)';
+const blue = 'rgb(0, 0, 255)';
+const yellow = ""rgb(255, 255, 0)"";
+const colors = {
+  grey: {
+    classTest: grey,
+  },
+  red: {
+    classTest: red,
+  },
+  green: {
+    classTest: green,
+  },
+  blue: {
+    classTest: blue,
+  },
+  yellow: {
+    classTest: yellow,
+  },
+};
+
+function testColor(test_name, color) {
+    test(function() {
+        assert_equals(getComputedStyle(subject).color, color);
+    }, test_name);
+}
+
+function testClassChange(element, cls, expectedColorName)
+{
+    const expectedColorForClassTest = colors[expectedColorName].classTest;
+    element.classList.add(cls);
+    testColor(`add ${cls} to ${element.id}`, expectedColorForClassTest);
+    element.classList.remove(cls);
+    testColor(`remove ${cls} from ${element.id}`, grey);
+}
+
+testColor('Initial color', grey);
+
+testClassChange(subject_descendant, 'test', 'red');
+testClassChange(sibling_descendant, 'test', 'green');
+testClassChange(subject_child, 'test_inner', 'blue');
+testClassChange(sibling_child, 'test_inner', 'yellow');
+
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-with-nesting-parent-containing-complex.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-with-nesting-parent-containing-complex.html
new file mode 100644
index 000000000000..647b4d6e54c4
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-with-nesting-parent-containing-complex.html
@@ -0,0 +1,158 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>CSS Selector Invalidation: :has() with nesting parent containing complex selector</title>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<script src=""../../../resources/testharness.js""></script>
+<script src=""../../../resources/testharnessreport.js""></script>
+<script src=""../../../resources/testdriver.js""></script>
+<script src=""../../../resources/testdriver-actions.js""></script>
+<script src=""../../../resources/testdriver-vendor.js""></script>
+<style>
+  .anchor { background-color: white; }
+
+  .ancestor .descendant {
+    .anchor:has(&) { background-color: blue; }
+  }
+
+  .ancestor .child {
+    .anchor:has(> &) { background-color: lightblue; }
+  }
+
+  .ancestor_prev ~ div .descendant {
+    .anchor:has(&) { background-color: yellow; }
+  }
+
+  .ancestor_prev ~ div.ancestor .descendant {
+    .anchor:has(&) { background-color: yellowgreen; }
+  }
+
+  .prev ~ .indirect_next {
+    .anchor:has(~ &) { background-color: green; }
+  }
+
+  .prev ~ .direct_next {
+    .anchor:has(+ &) { background-color: lightgreen; }
+  }
+</style>
+<div><div id=""grand_parent1"">
+  <div id=""parent1"">
+    <div id=""anchor1"" class=""anchor"">
+      <div><div class=""descendant""></div></div>
+    </div>
+  </div>
+</div></div>
+<div><div id=""grand_parent2"">
+  <div id=""parent2"">
+    <div id=""anchor2"" class=""anchor"">
+      <div class=""child""></div>
+    </div>
+  </div>
+</div></div>
+<div><div id=""grand_parent_indirect_prev3""></div>
+     <div id=""grand_parent_direct_prev3""></div>
+     <div id=""grand_parent3"">
+       <div id=""parent_indirect_prev3""></div>
+       <div id=""parent_direct_prev3""></div>
+       <div id=""parent3"">
+         <div id=""anchor_indirect_prev3""></div>
+         <div id=""anchor_direct_prev3""></div>
+         <div id=""anchor3"" class=""anchor"">
+           <div><div class=""descendant""></div></div>
+         </div>
+       </div>
+</div></div>
+<div><div id=""indirect_prev4""></div>
+     <div id=""direct_prev4""></div>
+     <div id=""anchor4"" class=""anchor""></div>
+     <div></div><div class=""indirect_next"">
+</div></div>
+<div><div id=""indirect_prev5""></div>
+     <div id=""direct_prev5""></div>
+     <div id=""anchor5"" class=""anchor""></div>
+     <div class=""direct_next"">
+</div></div>
+<script>
+  const white = ""rgb(255, 255, 255)"";
+  const blue = ""rgb(0, 0, 255)"";
+  const lightblue = ""rgb(173, 216, 230)"";
+  const yellow = ""rgb(255, 255, 0)"";
+  const yellowgreen = ""rgb(154, 205, 50)"";
+  const green = ""rgb(0, 128, 0)"";
+  const lightgreen = ""rgb(144, 238, 144)"";
+
+  function bg_color(element, color, message) {
+    promise_test(async () => {
+      assert_equals(getComputedStyle(element)['background-color'], color);
+    }, message);
+  }
+
+  function add_class_and_check_bg_color(
+      element_to_add, class_name, has_anchor, color) {
+    promise_test(async () => {
+      element_to_add.classList.add(class_name);
+      assert_equals(getComputedStyle(has_anchor)['background-color'], color);
+    }, `#${has_anchor.id} becomes ${color} after adding .${class_name} to #${element_to_add.id}`);
+  }
+
+  function remove_class_and_check_bg_color(
+      element_to_remove, class_name, has_anchor, color) {
+    promise_test(async () => {
+      element_to_remove.classList.remove(class_name);
+      assert_equals(getComputedStyle(has_anchor)['background-color'], color);
+    }, `#${has_anchor.id} becomes ${color} after removing .${class_name} from #${element_to_remove.id}`);
+  }
+
+  bg_color(anchor1, white, ""#anchor1 initially white"");
+  add_class_and_check_bg_color(grand_parent1, ""ancestor"", anchor1, blue);
+  remove_class_and_check_bg_color(grand_parent1, ""ancestor"", anchor1, white);
+  add_class_and_check_bg_color(parent1, ""ancestor"", anchor1, blue);
+  remove_class_and_check_bg_color(parent1, ""ancestor"", anchor1, white);
+
+  bg_color(anchor2, white, ""#anchor2 initially white"");
+  add_class_and_check_bg_color(grand_parent2, ""ancestor"", anchor2, lightblue);
+  remove_class_and_check_bg_color(grand_parent2, ""ancestor"", anchor2, white);
+  add_class_and_check_bg_color(parent2, ""ancestor"", anchor2, lightblue);
+  remove_class_and_check_bg_color(parent2, ""ancestor"", anchor2, white);
+
+  bg_color(anchor3, white, ""#anchor3 initially white"");
+  add_class_and_check_bg_color(grand_parent_indirect_prev3, ""ancestor_prev"",
+                               anchor3, yellow);
+  add_class_and_check_bg_color(grand_parent3, ""ancestor"", anchor3, yellowgreen);
+  remove_class_and_check_bg_color(grand_parent3, ""ancestor"", anchor3, yellow);
+  remove_class_and_check_bg_color(grand_parent_indirect_prev3, ""ancestor_prev"",
+                                  anchor3, white);
+  add_class_and_check_bg_color(grand_parent_direct_prev3, ""ancestor_prev"",
+                               anchor3, yellow);
+  remove_class_and_check_bg_color(grand_parent_direct_prev3, ""ancestor_prev"",
+                                  anchor3, white);
+  add_class_and_check_bg_color(parent_indirect_prev3, ""ancestor_prev"",
+                               anchor3, yellow);
+  add_class_and_check_bg_color(parent3, ""ancestor"", anchor3, yellowgreen);
+  remove_class_and_check_bg_color(parent3, ""ancestor"", anchor3, yellow);
+  remove_class_and_check_bg_color(parent_indirect_prev3, ""ancestor_prev"",
+                                  anchor3, white);
+  add_class_and_check_bg_color(parent_direct_prev3, ""ancestor_prev"",
+                               anchor3, yellow);
+  remove_class_and_check_bg_color(parent_direct_prev3, ""ancestor_prev"",
+                                  anchor3, white);
+  add_class_and_check_bg_color(anchor_indirect_prev3, ""ancestor_prev"",
+                               anchor3, yellow);
+  remove_class_and_check_bg_color(anchor_indirect_prev3, ""ancestor_prev"",
+                                  anchor3, white);
+  add_class_and_check_bg_color(anchor_direct_prev3, ""ancestor_prev"",
+                               anchor3, yellow);
+  remove_class_and_check_bg_color(anchor_direct_prev3, ""ancestor_prev"",
+                                  anchor3, white);
+
+  bg_color(anchor4, white, ""#anchor4 initially white"");
+  add_class_and_check_bg_color(indirect_prev4, ""prev"", anchor4, green);
+  remove_class_and_check_bg_color(indirect_prev4, ""prev"", anchor4, white);
+  add_class_and_check_bg_color(direct_prev4, ""prev"", anchor4, green);
+  remove_class_and_check_bg_color(direct_prev4, ""prev"", anchor4, white);
+
+  bg_color(anchor5, white, ""#anchor5 initially white"");
+  add_class_and_check_bg_color(indirect_prev5, ""prev"", anchor5, lightgreen);
+  remove_class_and_check_bg_color(indirect_prev5, ""prev"", anchor5, white);
+  add_class_and_check_bg_color(direct_prev5, ""prev"", anchor5, lightgreen);
+  remove_class_and_check_bg_color(direct_prev5, ""prev"", anchor5, white);
+</script>
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-with-nesting-parent-containing-hover.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-with-nesting-parent-containing-hover.html
new file mode 100644
index 000000000000..b6b81b226a08
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-with-nesting-parent-containing-hover.html
@@ -0,0 +1,55 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>CSS Selector Invalidation: :has() with nesting parent containing :hover</title>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<script src=""../../../resources/testharness.js""></script>
+<script src=""../../../resources/testharnessreport.js""></script>
+<script src=""../../../resources/testdriver.js""></script>
+<script src=""../../../resources/testdriver-actions.js""></script>
+<script src=""../../../resources/testdriver-vendor.js""></script>
+<style>
+  dd, dt { background: white; }
+  dd:hover {
+    dt:has(~ &) { background: lime; }
+  }
+</style>
+<dt id=dt1>#dt1</dt>
+<dd id=dd1>#dd1, Hover me, the DT above should go lime</dd>
+<dt id=dt2>#dt2</dt>
+<dd id=dd2>#dd2, Hover me, both DTs above should go lime</dd>
+<script>
+  const white = 'rgb(255, 255, 255)';
+  const lime = 'rgb(0, 255, 0)';
+
+  function bg_color(element, color, message) {
+    assert_equals(getComputedStyle(element)['background-color'], color, message);
+  }
+
+  promise_test(async () => {
+    bg_color(dt1, white, ""#dt1 initially white"");
+    bg_color(dd1, white, ""#dd1 initially white"");
+    bg_color(dt2, white, ""#dt2 initially white"");
+    bg_color(dd2, white, ""#dd2 initially white"");
+
+    await new test_driver.Actions().pointerMove(0, 0, {origin: dd1}).send();
+
+    bg_color(dt1, lime, ""#dt1 should go lime when hover #dd1"");
+    bg_color(dd1, white, ""#dd1 doesn't change when hover #dd1"");
+    bg_color(dt2, white, ""#dt2 doesn't change when hover #dd1"");
+    bg_color(dd2, white, ""#dd2 doesn't change when hover #dd1"");
+
+    await new test_driver.Actions().pointerMove(0, 0, {origin: dt1}).send();
+
+    bg_color(dt1, white, ""#dt1 should go white when hover #dt2"");
+    bg_color(dd1, white, ""#dd1 doesn't change when hover #dt2"");
+    bg_color(dt2, white, ""#dt2 doesn't change when hover #dt2"");
+    bg_color(dd2, white, ""#dd2 doesn't change when hover #dt2"");
+
+    await new test_driver.Actions().pointerMove(0, 0, {origin: dd2}).send();
+
+    bg_color(dt1, lime, ""#dt1 should go lime when hover #dd2"");
+    bg_color(dd1, white, ""#dd1 doesn't change when hover #dd2"");
+    bg_color(dt2, lime, ""#dt2 should go lime when hover #dd2"");
+    bg_color(dd2, white, ""#dd2 doesn't change when hover #dd2"");
+  });
+</script>
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-with-not.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-with-not.html
new file mode 100644
index 000000000000..4ae87d304852
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-with-not.html
@@ -0,0 +1,107 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>CSS Selector Invalidation: :has() with :not()</title>
+<link rel=""author"" title=""Antti Koivisto"" href=""mailto:antti@apple.com"">
+<script src=""../../../resources/testharness.js""></script>
+<script src=""../../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<style>
+div, main { color: grey }
+#subject:has(:not(.test)) { color: green }
+#subject:has(.test :not(.test)) { color: red }
+</style>
+
+<main id=main>
+    <div id=subject>
+        <div id=subject_child class=test>
+            <div id=subject_descendant class=test></div>
+        </div>
+    </div>
+</main>
+
+<script>
+const grey = 'rgb(128, 128, 128)';
+const red = 'rgb(255, 0, 0)';
+const green = 'rgb(0, 128, 0)';
+const blue = 'rgb(0, 0, 255)';
+
+function testColor(test_name, color) {
+    test(function() {
+        assert_equals(getComputedStyle(subject).color, color);
+    }, test_name);
+}
+
+function testClassChange(element, expectedColor)
+{
+    element.classList.remove('test');
+    testColor(`remove .test to ${element.id}`, expectedColor);
+    element.classList.add('test');
+    testColor(`add .test from ${element.id}`, grey);
+}
+
+function testElementInsertionBefore(beforeElement, expectedColor)
+{
+    const newElement = document.createElement('div');
+
+    beforeElement.before(newElement);
+    testColor(`insert element div before ${beforeElement.id}`, expectedColor);
+
+    newElement.remove();
+    testColor(`remove element div before ${beforeElement.id}`, grey);
+}
+
+function testElementInsertionAfter(afterElement, expectedColor)
+{
+    const newElement = document.createElement('div');
+
+    afterElement.after(newElement);
+    testColor(`insert element div after ${afterElement.id}`, expectedColor);
+
+    newElement.remove();
+    testColor(`remove element div after ${afterElement.id}`, grey);
+}
+
+function testTreeInsertionBefore(beforeElement, expectedColor)
+{
+    const newElement = document.createElement('div');
+    const newChild = document.createElement('div');
+    newElement.appendChild(newChild);
+
+    beforeElement.before(newElement);
+    testColor(`insert tree div>div before ${beforeElement.id}`, expectedColor);
+
+    newElement.remove();
+    testColor(`remove tree div>div before ${beforeElement.id}`, grey);
+}
+
+function testTreeInsertionAfter(afterElement, expectedColor)
+{
+    const newElement = document.createElement('div');
+    const newChild = document.createElement('div');
+    newElement.appendChild(newChild);
+
+    afterElement.after(newElement);
+    testColor(`insert tree div.test after ${afterElement.id}`, expectedColor);
+
+    newElement.remove();
+    testColor(`remove tree div.test after ${afterElement.id}`, grey);
+}
+
+testColor('Initial color', grey);
+
+testClassChange(subject_child, green);
+testClassChange(subject_descendant, red);
+
+testElementInsertionBefore(subject_child, green);
+testElementInsertionBefore(subject_descendant, red);
+
+testElementInsertionAfter(subject_child, green);
+testElementInsertionAfter(subject_descendant, red);
+
+testTreeInsertionBefore(subject_child, green);
+testTreeInsertionBefore(subject_descendant, red);
+
+testTreeInsertionAfter(subject_child, green);
+testTreeInsertionAfter(subject_descendant, red);
+
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-with-nth-child.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-with-nth-child.html
new file mode 100644
index 000000000000..f4405e2ca919
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-with-nth-child.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>CSS Selectors Test: :has(:nth-child()) invalidation for sibling change</title>
+<script src=""../../../resources/testharness.js""></script>
+<script src=""../../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<style>
+  #test-container > div { background-color: green; }
+  #target1:has(.item:nth-child(3)) { background-color: red; }
+  #target2:has(.item:nth-last-child(3)) { background-color: red; }
+  #target3:has(.item:nth-child(3) > .child) { background-color: red; }
+  #target4:has(.item:nth-last-child(3) > .child) { background-color: red; }
+</style>
+<div id=""test-container"">
+  <div id=""target1"">
+    <div class=""item"" id=""item1"">FAIL if you see this text</div>
+    <div class=""item""></div>
+    <div class=""item"">This text should have a green background</div>
+  </div>
+  <div id=""target2"">
+    <div class=""item"">This text should have a green background</div>
+    <div class=""item""></div>
+    <div class=""item"" id=""item2"">FAIL if you see this text</div>
+  </div>
+  <div id=""target3"">
+    <div class=""item"" id=""item3"">FAIL if you see this text</div>
+    <div class=""item""></div>
+    <div class=""item"">
+      <span class=""child"">This text should have a green background<span>
+    </div>
+  </div>
+  <div id=""target4"">
+    <div class=""item"">
+      <span class=""child"">This text should have a green background<span>
+    </div>
+    <div class=""item""></div>
+    <div class=""item"" id=""item4"">FAIL if you see this text</div>
+  </div>
+</div>
+<script>
+  test(() => {
+    assert_equals(getComputedStyle(target1).backgroundColor, ""rgb(255, 0, 0)"");
+    assert_equals(getComputedStyle(target2).backgroundColor, ""rgb(255, 0, 0)"");
+    assert_equals(getComputedStyle(target3).backgroundColor, ""rgb(255, 0, 0)"");
+    assert_equals(getComputedStyle(target4).backgroundColor, ""rgb(255, 0, 0)"");
+  }, ""Initially red"");
+
+  test(() => {
+    item1.remove();
+    assert_equals(getComputedStyle(target1).backgroundColor, ""rgb(0, 128, 0)"");
+  }, "":nth-child() no longer matching after removal"");
+
+  test(() => {
+    item2.remove();
+    assert_equals(getComputedStyle(target2).backgroundColor, ""rgb(0, 128, 0)"");
+  }, "":nth-last-child() no longer matching after removal"");
+
+  test(() => {
+    item3.remove();
+    assert_equals(getComputedStyle(target3).backgroundColor, ""rgb(0, 128, 0)"");
+  }, "":nth-child() in non-subject no longer matching after removal"");
+
+  test(() => {
+    item4.remove();
+    assert_equals(getComputedStyle(target4).backgroundColor, ""rgb(0, 128, 0)"");
+  }, "":nth-last-child() in non-subject no longer matching after removal"");
+</script>
diff --git a/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-with-pseudo-class.html b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-with-pseudo-class.html
new file mode 100644
index 000000000000..017082c4d788
--- /dev/null
+++ b/Tests/LibWeb/Text/input/wpt-import/css/selectors/invalidation/has-with-pseudo-class.html
@@ -0,0 +1,99 @@
+<!DOCTYPE html>
+<meta charset=""utf-8"">
+<title>CSS Selector Invalidation: :has() with pseudo-classes</title>
+<link rel=""author"" title=""Antti Koivisto"" href=""mailto:antti@apple.com"">
+<script src=""../../../resources/testharness.js""></script>
+<script src=""../../../resources/testharnessreport.js""></script>
+<link rel=""help"" href=""https://drafts.csswg.org/selectors/#relational"">
+<style>
+main:has(input) div { color: grey }
+main:has(#checkbox:checked) > #subject { color: red }
+main:has(#option:checked) > #subject { color: red }
+main:has(#checkbox:disabled) > #subject { color: green }
+main:has(#option:disabled) > :is(#subject, #subject2) { color: green }
+main:has(#optgroup:disabled) > #subject { color: blue }
+main:not(:has(#checkbox:enabled)) > #subject3 { color: green }
+main:not(:has(#option:enabled)) :is(#subject3, #subject4) { color: green }
+main:not(:has(#optgroup:enabled)) > #subject3 { color: blue }
+main:has(#text_input:valid) > #subject { color: yellow }
+main:not(:has(#text_input:invalid)) > #subject2 { color: yellow }
+main:has(#form:valid) > #subject3 { color: yellow }
+main:not(:has(#form:invalid)) > #subject4 { color: yellow }
+</style>
+
+<main id=main>
+    <form id=form>
+        <input type=checkbox id=checkbox></input>
+        <select id=select><optgroup id=optgroup><option>a</option><option id=option>b</option></optgroup></select>
+        <input id=text_input type=text required></input>
+    </form>
+    <div id=subject></div>
+    <div id=subject2></div>
+    <div id=subject3></div>
+    <div id=subject4></div>
+</main>
+
+<script>
+const grey = 'rgb(128, 128, 128)';
+const red = 'rgb(255, 0, 0)';
+const green = 'rgb(0, 128, 0)';
+const blue = 'rgb(0, 0, 255)';
+const yellow = 'rgb(255, 255, 0)';
+const purple = 'rgb(128, 0, 128)';
+const pink = 'rgb(255, 192, 203)';
+
+function testColor(test_name, subject_element, color) {
+    test(function() {
+        assert_equals(getComputedStyle(subject_element).color, color);
+    }, test_name);
+}
+
+function testPseudoClassChange(element, property, subject_element, expectedColor)
+{
+    testColor(`Before set ${property} on ${element.id}, testing ${subject_element.id}`, subject_element, grey);
+
+    element[property] = true;
+    testColor(`Set ${property} on ${element.id}, testing ${subject_element.id}`, subject_element, expectedColor);
+
+    element[property] = false;
+    testColor(`Unset ${property} on ${element.id}, testing ${subject_element.id}`, subject_element, grey);
+}
+
+function testSelectedChange(option, subject_element, expectedColor)
+{
+    const oldOption = select.selectedOptions[0];
+    option.selected = true;
+    testColor(`Set select on ${option.id}`, subject_element, expectedColor);
+    oldOption.selected = true;
+    testColor(`Reset select`, subject, grey);
+}
+
+function testValueChange(input, subject_element, expectedColor)
+{
+    testColor(`Before setting value of ${input.id}, testing ${subject_element.id}`, subject_element, grey);
+
+    input.value = ""value"";
+    testColor(`Set value of ${input.id}, testing ${subject_element.id}`, subject_element, expectedColor);
+
+    input.value = """";
+    testColor(`Clear value of ${input.id}, testing ${subject_element.id}`, subject_element, grey);
+}
+
+testPseudoClassChange(checkbox, ""checked"", subject, red);
+testSelectedChange(option, subject, red);
+
+testPseudoClassChange(checkbox, ""disabled"", subject, green);
+testPseudoClassChange(checkbox, ""disabled"", subject3, green);
+testPseudoClassChange(option, ""disabled"", subject, green);
+testPseudoClassChange(option, ""disabled"", subject3, green);
+
+testPseudoClassChange(optgroup, ""disabled"", subject, blue);
+testPseudoClassChange(optgroup, ""disabled"", subject2, green);
+testPseudoClassChange(optgroup, ""disabled"", subject3, blue);
+testPseudoClassChange(optgroup, ""disabled"", subject4, green);
+
+testValueChange(text_input, subject, yellow);
+testValueChange(text_input, subject2, yellow);
+testValueChange(text_input, subject3, yellow);
+testValueChange(text_input, subject4, yellow);
+</script>"
a9fb34ca6f5d78ef162bea383e42ecec440c8a4b,2022-01-21 06:22:22,mjz19910,libcore: Add ErrorOr wrapper for adjtime,False,Add ErrorOr wrapper for adjtime,libcore,"diff --git a/Userland/Libraries/LibCore/System.cpp b/Userland/Libraries/LibCore/System.cpp
index a3b7a3e1bf78..46766b0c9073 100644
--- a/Userland/Libraries/LibCore/System.cpp
+++ b/Userland/Libraries/LibCore/System.cpp
@@ -2,6 +2,7 @@
  * Copyright (c) 2021-2022, Andreas Kling <kling@serenityos.org>
  * Copyright (c) 2021, Kenneth Myhra <kennethmyhra@gmail.com>
  * Copyright (c) 2021, Sam Atkins <atkinssj@serenityos.org>
+ * Copyright (c) 2022, Matthias Zimmerman <matthias291999@gmail.com>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -15,6 +16,7 @@
 #include <sys/ioctl.h>
 #include <sys/mman.h>
 #include <sys/ptrace.h>
+#include <sys/time.h>
 #include <termios.h>
 #include <unistd.h>
 
@@ -741,6 +743,18 @@ ErrorOr<struct utsname> uname()
     return uts;
 }
 
+ErrorOr<void> adjtime(const struct timeval* delta, struct timeval* old_delta)
+{
+#ifdef __serenity__
+    int rc = syscall(SC_adjtime, delta, old_delta);
+    HANDLE_SYSCALL_RETURN_VALUE(""adjtime""sv, rc, {});
+#else
+    if (::adjtime(delta, old_delta) < 0)
+        return Error::from_syscall(""adjtime""sv, -errno);
+    return {};
+#endif
+}
+
 ErrorOr<int> socket(int domain, int type, int protocol)
 {
     auto fd = ::socket(domain, type, protocol);
diff --git a/Userland/Libraries/LibCore/System.h b/Userland/Libraries/LibCore/System.h
index 5b3e7a1c6ca8..c13a938d55ee 100644
--- a/Userland/Libraries/LibCore/System.h
+++ b/Userland/Libraries/LibCore/System.h
@@ -18,6 +18,7 @@
 #include <sys/ioctl.h>
 #include <sys/socket.h>
 #include <sys/stat.h>
+#include <sys/time.h>
 #include <sys/utsname.h>
 #include <sys/wait.h>
 #include <termios.h>
@@ -112,6 +113,7 @@ ErrorOr<void> unlink(StringView path);
 ErrorOr<void> utime(StringView path, Optional<struct utimbuf>);
 ErrorOr<struct utsname> uname();
 ErrorOr<Array<int, 2>> pipe2(int flags);
+ErrorOr<void> adjtime(const struct timeval* delta, struct timeval* old_delta);
 
 ErrorOr<int> socket(int domain, int type, int protocol);
 ErrorOr<void> bind(int sockfd, struct sockaddr const*, socklen_t);"
22dd5a70212172c193ecce72e36b9fec68da38e3,2020-08-06 18:39:49,Andreas Kling,shell: Move printing job status into a Job::print_status() helper,False,Move printing job status into a Job::print_status() helper,shell,"diff --git a/Shell/Builtin.cpp b/Shell/Builtin.cpp
index ebc8644a81c7..5cef22a449c9 100644
--- a/Shell/Builtin.cpp
+++ b/Shell/Builtin.cpp
@@ -429,55 +429,17 @@ int Shell::builtin_jobs(int argc, const char** argv)
     if (!parser.parse(argc, const_cast<char**>(argv), false))
         return 1;
 
-    enum {
-        Basic,
-        OnlyPID,
-        ListAll,
-    } mode { Basic };
+    Job::PrintStatusMode mode = Job::PrintStatusMode::Basic;
 
     if (show_pid)
-        mode = OnlyPID;
+        mode = Job::PrintStatusMode::OnlyPID;
 
     if (list)
-        mode = ListAll;
-
-    for (auto& job : jobs) {
-        auto pid = job.value->pid();
-        int wstatus;
-        auto rc = waitpid(pid, &wstatus, WNOHANG);
-        if (rc == -1) {
-            perror(""waitpid"");
-            return 1;
-        }
-        auto status = ""running"";
-
-        if (rc != 0) {
-            if (WIFEXITED(wstatus))
-                status = ""exited"";
-
-            if (WIFSTOPPED(wstatus))
-                status = ""stopped"";
+        mode = Job::PrintStatusMode::ListAll;
 
-            if (WIFSIGNALED(wstatus))
-                status = ""signaled"";
-        }
-
-        char background_indicator = '-';
-
-        if (job.value->is_running_in_background())
-            background_indicator = '+';
-
-        switch (mode) {
-        case Basic:
-            printf(""[%"" PRIu64 ""] %c %s %s\n"", job.value->job_id(), background_indicator, status, job.value->cmd().characters());
-            break;
-        case OnlyPID:
-            printf(""[%"" PRIu64 ""] %c %d %s %s\n"", job.value->job_id(), background_indicator, pid, status, job.value->cmd().characters());
-            break;
-        case ListAll:
-            printf(""[%"" PRIu64 ""] %c %d %d %s %s\n"", job.value->job_id(), background_indicator, pid, job.value->pgid(), status, job.value->cmd().characters());
-            break;
-        }
+    for (auto& it : jobs) {
+        if (!it.value->print_status(mode))
+            return 1;
     }
 
     return 0;
diff --git a/Shell/CMakeLists.txt b/Shell/CMakeLists.txt
index 339f9a48deb8..10bec5f28280 100644
--- a/Shell/CMakeLists.txt
+++ b/Shell/CMakeLists.txt
@@ -1,9 +1,10 @@
 set(SOURCES
     AST.cpp
     Builtin.cpp
-    main.cpp
+    Job.cpp
     Parser.cpp
     Shell.cpp
+    main.cpp
 )
 
 serenity_bin(Shell)
diff --git a/Shell/Job.cpp b/Shell/Job.cpp
new file mode 100644
index 000000000000..29408c5266b7
--- /dev/null
+++ b/Shell/Job.cpp
@@ -0,0 +1,71 @@
+/*
+ * Copyright (c) 2020, the SerenityOS developers
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include ""Job.h""
+#include <inttypes.h>
+#include <stdio.h>
+#include <sys/wait.h>
+
+bool Job::print_status(PrintStatusMode mode)
+{
+    int wstatus;
+    auto rc = waitpid(m_pid, &wstatus, WNOHANG);
+    if (rc == -1) {
+        perror(""waitpid"");
+        return false;
+    }
+    auto status = ""running"";
+
+    if (rc != 0) {
+        if (WIFEXITED(wstatus))
+            status = ""exited"";
+
+        if (WIFSTOPPED(wstatus))
+            status = ""stopped"";
+
+        if (WIFSIGNALED(wstatus))
+            status = ""signaled"";
+    }
+
+    char background_indicator = '-';
+
+    if (is_running_in_background())
+        background_indicator = '+';
+
+    switch (mode) {
+    case PrintStatusMode::Basic:
+        printf(""[%"" PRIu64 ""] %c %s %s\n"", m_job_id, background_indicator, status, m_cmd.characters());
+        break;
+    case PrintStatusMode::OnlyPID:
+        printf(""[%"" PRIu64 ""] %c %d %s %s\n"", m_job_id, background_indicator, m_pid, status, m_cmd.characters());
+        break;
+    case PrintStatusMode::ListAll:
+        printf(""[%"" PRIu64 ""] %c %d %d %s %s\n"", m_job_id, background_indicator, m_pid, m_pgid, status, m_cmd.characters());
+        break;
+    }
+
+    return true;
+}
diff --git a/Shell/Job.h b/Shell/Job.h
index 945a4a7afe7f..75636a8758b2 100644
--- a/Shell/Job.h
+++ b/Shell/Job.h
@@ -92,6 +92,14 @@ class Job : public RefCounted<Job> {
 
     void deactivate() const { m_active = false; }
 
+    enum class PrintStatusMode {
+        Basic,
+        OnlyPID,
+        ListAll,
+    };
+
+    bool print_status(PrintStatusMode);
+
 private:
     Job(pid_t pid, unsigned pgid, String cmd, u64 job_id)
         : m_pgid(pgid)"
3e2e94bd01204336eb6a81242d88adc747402f89,2023-03-19 19:45:35,kleines Filmröllchen,meta: Specify a working directory for the FLAC spec test on Lagom,False,Specify a working directory for the FLAC spec test on Lagom,meta,"diff --git a/Meta/Lagom/CMakeLists.txt b/Meta/Lagom/CMakeLists.txt
index a2b47181c722..fcea6058f121 100644
--- a/Meta/Lagom/CMakeLists.txt
+++ b/Meta/Lagom/CMakeLists.txt
@@ -578,7 +578,6 @@ if (BUILD_LAGOM)
         # LibTest tests from Tests/
         set(TEST_DIRECTORIES
             AK
-            LibAudio
             LibCrypto
             LibCompress
             LibGL
@@ -604,6 +603,9 @@ if (BUILD_LAGOM)
         # LibTLS needs a special working directory to find cacert.pem
         lagom_test(../../Tests/LibTLS/TestTLSHandshake.cpp LibTLS LIBS LibTLS LibCrypto)
 
+        # The FLAC tests need a special working directory to find the test files
+        lagom_test(../../Tests/LibAudio/TestFLACSpec.cpp LIBS LibAudio WORKING_DIRECTORY ""${FLAC_TEST_PATH}/.."")
+
         # LibCore
         lagom_test(../../Tests/LibCore/TestLibCoreIODevice.cpp WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR}/../../Tests/LibCore)"
af0b2d1d86761dd7dc89bb605794093968a0a74f,2020-06-26 00:35:40,Peter Elliott,kernel: Harvest randomness from various drivers,False,Harvest randomness from various drivers,kernel,"diff --git a/Kernel/Devices/KeyboardDevice.cpp b/Kernel/Devices/KeyboardDevice.cpp
index 01a34c853425..20e26da49113 100644
--- a/Kernel/Devices/KeyboardDevice.cpp
+++ b/Kernel/Devices/KeyboardDevice.cpp
@@ -287,6 +287,8 @@ void KeyboardDevice::handle_irq(const RegisterState&)
         u8 ch = raw & 0x7f;
         bool pressed = !(raw & 0x80);
 
+        m_entropy_source.add_random_event(raw);
+
         if (raw == 0xe0) {
             m_has_e0_prefix = true;
             return;
diff --git a/Kernel/Devices/KeyboardDevice.h b/Kernel/Devices/KeyboardDevice.h
index acc2297eb790..f35ffd9621d3 100644
--- a/Kernel/Devices/KeyboardDevice.h
+++ b/Kernel/Devices/KeyboardDevice.h
@@ -32,6 +32,7 @@
 #include <Kernel/Devices/CharacterDevice.h>
 #include <Kernel/Interrupts/IRQHandler.h>
 #include <Kernel/KeyCode.h>
+#include <Kernel/Random.h>
 #include <LibKeyboard/CharacterMap.h>
 
 namespace Kernel {
@@ -82,6 +83,7 @@ class KeyboardDevice final : public IRQHandler
     bool m_caps_lock_on { false };
     bool m_num_lock_on { false };
     bool m_has_e0_prefix { false };
+    EntropySource m_entropy_source;
 
     Keyboard::CharacterMap m_character_map = Keyboard::CharacterMap(""en"");
 };
diff --git a/Kernel/Devices/PATAChannel.cpp b/Kernel/Devices/PATAChannel.cpp
index 06b88afb1662..1fc75745bd64 100644
--- a/Kernel/Devices/PATAChannel.cpp
+++ b/Kernel/Devices/PATAChannel.cpp
@@ -29,9 +29,9 @@
 #include <Kernel/Devices/PATAChannel.h>
 #include <Kernel/Devices/PATADiskDevice.h>
 #include <Kernel/FileSystem/ProcFS.h>
+#include <Kernel/IO.h>
 #include <Kernel/Process.h>
 #include <Kernel/VM/MemoryManager.h>
-#include <Kernel/IO.h>
 
 namespace Kernel {
 
@@ -186,6 +186,9 @@ void PATAChannel::handle_irq(const RegisterState&)
     // FIXME: We might get random interrupts due to malfunctioning hardware, so we should check that we actually requested something to happen.
 
     u8 status = m_io_base.offset(ATA_REG_STATUS).in<u8>();
+
+    m_entropy_source.add_random_event(status);
+
     if (status & ATA_SR_ERR) {
         print_ide_status(status);
         m_device_error = m_io_base.offset(ATA_REG_ERROR).in<u8>();
diff --git a/Kernel/Devices/PATAChannel.h b/Kernel/Devices/PATAChannel.h
index 09eed4216c6c..60ed95d6c1f1 100644
--- a/Kernel/Devices/PATAChannel.h
+++ b/Kernel/Devices/PATAChannel.h
@@ -44,6 +44,7 @@
 #include <Kernel/PCI/Access.h>
 #include <Kernel/PCI/Device.h>
 #include <Kernel/PhysicalAddress.h>
+#include <Kernel/Random.h>
 #include <Kernel/VM/PhysicalPage.h>
 #include <Kernel/WaitQueue.h>
 
@@ -103,6 +104,7 @@ class PATAChannel final : public PCI::Device {
     RefPtr<PhysicalPage> m_dma_buffer_page;
     IOAddress m_bus_master_base;
     Lockable<bool> m_dma_enabled;
+    EntropySource m_entropy_source;
 
     RefPtr<PATADiskDevice> m_master;
     RefPtr<PATADiskDevice> m_slave;
diff --git a/Kernel/Devices/PS2MouseDevice.cpp b/Kernel/Devices/PS2MouseDevice.cpp
index e673c02fbd2d..56852537cdc0 100644
--- a/Kernel/Devices/PS2MouseDevice.cpp
+++ b/Kernel/Devices/PS2MouseDevice.cpp
@@ -81,6 +81,7 @@ void PS2MouseDevice::handle_irq(const RegisterState&)
         if (backdoor->vmmouse_is_absolute()) {
             IO::in8(I8042_BUFFER);
             auto packet = backdoor->receive_mouse_packet();
+            m_entropy_source.add_random_event(packet);
             if (packet.has_value())
                 m_queue.enqueue(packet.value());
             return;
@@ -99,6 +100,8 @@ void PS2MouseDevice::handle_irq(const RegisterState&)
 #ifdef PS2MOUSE_DEBUG
             dbg() << ""PS2Mouse: "" << m_data[1] << "", "" << m_data[2] << "" "" << ((m_data[0] & 1) ? ""Left"" : """") << "" "" << ((m_data[0] & 2) ? ""Right"" : """") << "" (buffered: "" << m_queue.size() << "")"";
 #endif
+            m_entropy_source.add_random_event(*(u32*)m_data);
+
             parse_data_packet();
         };
 
diff --git a/Kernel/Devices/PS2MouseDevice.h b/Kernel/Devices/PS2MouseDevice.h
index 5ed62b52dbca..cfb2557f85ed 100644
--- a/Kernel/Devices/PS2MouseDevice.h
+++ b/Kernel/Devices/PS2MouseDevice.h
@@ -30,6 +30,7 @@
 #include <Kernel/Devices/CharacterDevice.h>
 #include <Kernel/Interrupts/IRQHandler.h>
 #include <Kernel/MousePacket.h>
+#include <Kernel/Random.h>
 
 namespace Kernel {
 
@@ -77,6 +78,7 @@ class PS2MouseDevice final : public IRQHandler
     u8 m_data[4];
     bool m_has_wheel { false };
     bool m_has_five_buttons { false };
+    EntropySource m_entropy_source;
 };
 
 }
diff --git a/Kernel/Net/E1000NetworkAdapter.cpp b/Kernel/Net/E1000NetworkAdapter.cpp
index e8619d67704b..3dd74a6cb9f3 100644
--- a/Kernel/Net/E1000NetworkAdapter.cpp
+++ b/Kernel/Net/E1000NetworkAdapter.cpp
@@ -204,6 +204,9 @@ void E1000NetworkAdapter::handle_irq(const RegisterState&)
     out32(REG_INTERRUPT_MASK_CLEAR, 0xffffffff);
 
     u32 status = in32(REG_INTERRUPT_CAUSE_READ);
+
+    m_entropy_source.add_random_event(status);
+
     if (status & 4) {
         u32 flags = in32(REG_CTRL);
         out32(REG_CTRL, flags | ECTRL_SLU);
diff --git a/Kernel/Net/E1000NetworkAdapter.h b/Kernel/Net/E1000NetworkAdapter.h
index 96214e9d6d7d..fd5f864879b5 100644
--- a/Kernel/Net/E1000NetworkAdapter.h
+++ b/Kernel/Net/E1000NetworkAdapter.h
@@ -28,11 +28,12 @@
 
 #include <AK/NonnullOwnPtrVector.h>
 #include <AK/OwnPtr.h>
+#include <Kernel/IO.h>
 #include <Kernel/Interrupts/IRQHandler.h>
 #include <Kernel/Net/NetworkAdapter.h>
 #include <Kernel/PCI/Access.h>
 #include <Kernel/PCI/Device.h>
-#include <Kernel/IO.h>
+#include <Kernel/Random.h>
 
 namespace Kernel {
 
@@ -103,6 +104,7 @@ class E1000NetworkAdapter final : public NetworkAdapter
     u8 m_interrupt_line { 0 };
     bool m_has_eeprom { false };
     bool m_use_mmio { false };
+    EntropySource m_entropy_source;
 
     static const size_t number_of_rx_descriptors = 32;
     static const size_t number_of_tx_descriptors = 8;
diff --git a/Kernel/Net/RTL8139NetworkAdapter.cpp b/Kernel/Net/RTL8139NetworkAdapter.cpp
index 4b496fcfd045..82a176e2cc1a 100644
--- a/Kernel/Net/RTL8139NetworkAdapter.cpp
+++ b/Kernel/Net/RTL8139NetworkAdapter.cpp
@@ -184,6 +184,8 @@ void RTL8139NetworkAdapter::handle_irq(const RegisterState&)
         int status = in16(REG_ISR);
         out16(REG_ISR, status);
 
+        m_entropy_source.add_random_event(status);
+
 #ifdef RTL8139_DEBUG
         klog() << ""RTL8139NetworkAdapter::handle_irq status=0x"" << String::format(""%x"", status);
 #endif
diff --git a/Kernel/Net/RTL8139NetworkAdapter.h b/Kernel/Net/RTL8139NetworkAdapter.h
index 7db2f361e218..7255f722c95e 100644
--- a/Kernel/Net/RTL8139NetworkAdapter.h
+++ b/Kernel/Net/RTL8139NetworkAdapter.h
@@ -27,10 +27,11 @@
 #pragma once
 
 #include <AK/OwnPtr.h>
+#include <Kernel/IO.h>
 #include <Kernel/Net/NetworkAdapter.h>
 #include <Kernel/PCI/Access.h>
 #include <Kernel/PCI/Device.h>
-#include <Kernel/IO.h>
+#include <Kernel/Random.h>
 
 namespace Kernel {
 
@@ -73,5 +74,6 @@ class RTL8139NetworkAdapter final : public NetworkAdapter
     u8 m_tx_next_buffer { 0 };
     OwnPtr<Region> m_packet_buffer;
     bool m_link_up { false };
+    EntropySource m_entropy_source;
 };
 }
diff --git a/Kernel/Random.cpp b/Kernel/Random.cpp
index 0b95698a9028..93a84b7227a4 100644
--- a/Kernel/Random.cpp
+++ b/Kernel/Random.cpp
@@ -28,6 +28,7 @@
 #include <Kernel/Arch/i386/CPU.h>
 #include <Kernel/Devices/RandomDevice.h>
 #include <Kernel/Random.h>
+#include <Kernel/Time/TimeManagement.h>
 
 namespace Kernel {
 
@@ -44,7 +45,7 @@ KernelRng& KernelRng::the()
 KernelRng::KernelRng()
 {
     if (g_cpu_supports_rdrand) {
-        for (size_t i = 0; i < KernelRng::pool_count * KernelRng::reseed_threshold; ++i) {
+        for (size_t i = 0; i < resource().pool_count * resource().reseed_threshold; ++i) {
             u32 value = 0;
             asm volatile(
                 ""1:\n""
@@ -52,14 +53,22 @@ KernelRng::KernelRng()
                 ""jnc 1b\n""
                 : ""=r""(value));
 
-            this->add_random_event(value, i % 32);
+            this->resource().add_random_event(value, i % 32);
         }
     }
 }
 
+size_t EntropySource::next_source { 0 };
+
 void get_good_random_bytes(u8* buffer, size_t buffer_size)
 {
-    KernelRng::the().get_random_bytes(buffer, buffer_size);
+    // FIXME: What if interrupts are disabled because we're in an interrupt?
+    if (are_interrupts_enabled()) {
+        LOCKER(KernelRng::the().lock());
+        KernelRng::the().resource().get_random_bytes(buffer, buffer_size);
+    } else {
+        KernelRng::the().resource().get_random_bytes(buffer, buffer_size);
+    }
 }
 
 void get_fast_random_bytes(u8* buffer, size_t buffer_size)
diff --git a/Kernel/Random.h b/Kernel/Random.h
index f56e1ccb8077..280473174094 100644
--- a/Kernel/Random.h
+++ b/Kernel/Random.h
@@ -30,6 +30,8 @@
 #include <AK/Assertions.h>
 #include <AK/ByteBuffer.h>
 #include <AK/Types.h>
+#include <Kernel/Arch/i386/CPU.h>
+#include <Kernel/Lock.h>
 #include <Kernel/StdLib.h>
 #include <LibCrypto/Cipher/AES.h>
 #include <LibCrypto/Cipher/Cipher.h>
@@ -110,7 +112,7 @@ class FortunaPRNG {
     HashType m_pools[pool_count];
 };
 
-class KernelRng : public FortunaPRNG<Crypto::Cipher::AESCipher, Crypto::Hash::SHA256, 256> {
+class KernelRng : public Lockable<FortunaPRNG<Crypto::Cipher::AESCipher, Crypto::Hash::SHA256, 256>> {
     AK_MAKE_ETERNAL;
 
 public:
@@ -120,6 +122,36 @@ class KernelRng : public FortunaPRNG<Crypto::Cipher::AESCipher, Crypto::Hash::SH
     KernelRng();
 };
 
+class EntropySource {
+    template<typename T>
+    struct Event {
+        u64 timestamp;
+        size_t source;
+        T event_data;
+    };
+
+public:
+    EntropySource()
+        : m_source(next_source++)
+    {
+    }
+
+    template<typename T>
+    void add_random_event(const T& event_data)
+    {
+        // We don't lock this because on the off chance a pool is corrupted, entropy isn't lost.
+        Event<T> event = { read_tsc(), m_source, event_data };
+        KernelRng::the().resource().add_random_event(event, m_pool);
+        m_pool++;
+    }
+
+private:
+    static size_t next_source;
+    size_t m_pool { 0 };
+    size_t m_source;
+    Lock m_lock;
+};
+
 // NOTE: These API's are primarily about expressing intent/needs in the calling code.
 //       We don't make any guarantees about actual fastness or goodness yet."
68e36169710d2f846f75be3740106448a2f07482,2021-02-14 23:08:46,Andreas Kling,kernel: Forked children should inherit the signal trampoline address,False,Forked children should inherit the signal trampoline address,kernel,"diff --git a/Kernel/Syscalls/fork.cpp b/Kernel/Syscalls/fork.cpp
index c5b4a35bc8db..3a6caa70fd41 100644
--- a/Kernel/Syscalls/fork.cpp
+++ b/Kernel/Syscalls/fork.cpp
@@ -52,6 +52,7 @@ pid_t Process::sys$fork(RegisterState& regs)
     child->m_pg = m_pg;
     child->m_umask = m_umask;
     child->m_extra_gids = m_extra_gids;
+    child->m_signal_trampoline = m_signal_trampoline;
 
     dbgln_if(FORK_DEBUG, ""fork: child={}"", child);
     child->space().set_enforces_syscall_regions(space().enforces_syscall_regions());"
0cb0979990d0e10b0f93cd39bdd8c86f2ebaca1e,2022-02-13 19:14:36,Andreas Kling,libjs: Add Token::flystring_value() to produce FlyString directly,False,Add Token::flystring_value() to produce FlyString directly,libjs,"diff --git a/Userland/Libraries/LibJS/Parser.cpp b/Userland/Libraries/LibJS/Parser.cpp
index cb746982a12c..880f68d0dcf6 100644
--- a/Userland/Libraries/LibJS/Parser.cpp
+++ b/Userland/Libraries/LibJS/Parser.cpp
@@ -1692,7 +1692,7 @@ NonnullRefPtr<ObjectExpression> Parser::parse_object_expression()
                 property_key = parse_property_key();
             } else {
                 property_key = create_ast_node<StringLiteral>({ m_state.current_token.filename(), rule_start.position(), position() }, identifier.value());
-                property_value = create_ast_node<Identifier>({ m_state.current_token.filename(), rule_start.position(), position() }, identifier.value());
+                property_value = create_ast_node<Identifier>({ m_state.current_token.filename(), rule_start.position(), position() }, identifier.flystring_value());
             }
         } else {
             property_key = parse_property_key();
@@ -2076,7 +2076,7 @@ NonnullRefPtr<Expression> Parser::parse_secondary_expression(NonnullRefPtr<Expre
             expected(""IdentifierName"");
         }
 
-        return create_ast_node<MemberExpression>({ m_state.current_token.filename(), rule_start.position(), position() }, move(lhs), create_ast_node<Identifier>({ m_state.current_token.filename(), rule_start.position(), position() }, consume().value()));
+        return create_ast_node<MemberExpression>({ m_state.current_token.filename(), rule_start.position(), position() }, move(lhs), create_ast_node<Identifier>({ m_state.current_token.filename(), rule_start.position(), position() }, consume().flystring_value()));
     case TokenType::BracketOpen: {
         consume(TokenType::BracketOpen);
         auto expression = create_ast_node<MemberExpression>({ m_state.current_token.filename(), rule_start.position(), position() }, move(lhs), parse_expression(0), true);
@@ -2246,7 +2246,7 @@ NonnullRefPtr<Identifier> Parser::parse_identifier()
         syntax_error(""'arguments' is not allowed in class field initializer"");
     return create_ast_node<Identifier>(
         { m_state.current_token.filename(), identifier_start, position() },
-        token.value());
+        token.flystring_value());
 }
 
 Vector<CallExpression::Argument> Parser::parse_arguments()
@@ -2726,7 +2726,7 @@ RefPtr<BindingPattern> Parser::parse_binding_pattern(Parser::AllowDuplicates all
                 } else {
                     name = create_ast_node<Identifier>(
                         { m_state.current_token.filename(), rule_start.position(), position() },
-                        consume().value());
+                        consume().flystring_value());
                 }
             } else if (match(TokenType::BracketOpen)) {
                 consume();
@@ -2764,7 +2764,7 @@ RefPtr<BindingPattern> Parser::parse_binding_pattern(Parser::AllowDuplicates all
                 } else if (match_identifier_name()) {
                     alias = create_ast_node<Identifier>(
                         { m_state.current_token.filename(), rule_start.position(), position() },
-                        consume().value());
+                        consume().flystring_value());
 
                 } else {
                     expected(""identifier or binding pattern"");
@@ -2800,7 +2800,7 @@ RefPtr<BindingPattern> Parser::parse_binding_pattern(Parser::AllowDuplicates all
                 alias = pattern.release_nonnull();
             } else if (match_identifier_name()) {
                 // BindingElement must always have an Empty name field
-                auto identifier_name = consume_identifier().value();
+                auto identifier_name = consume_identifier().flystring_value();
                 alias = create_ast_node<Identifier>(
                     { m_state.current_token.filename(), rule_start.position(), position() },
                     identifier_name);
@@ -2886,7 +2886,7 @@ NonnullRefPtr<VariableDeclaration> Parser::parse_variable_declaration(bool for_l
         Variant<NonnullRefPtr<Identifier>, NonnullRefPtr<BindingPattern>, Empty> target {};
         if (match_identifier()) {
             auto identifier_start = push_start();
-            auto name = consume_identifier().value();
+            auto name = consume_identifier().flystring_value();
             target = create_ast_node<Identifier>(
                 { m_state.current_token.filename(), rule_start.position(), position() },
                 name);
@@ -2908,14 +2908,14 @@ NonnullRefPtr<VariableDeclaration> Parser::parse_variable_declaration(bool for_l
 
             target = create_ast_node<Identifier>(
                 { m_state.current_token.filename(), rule_start.position(), position() },
-                consume().value());
+                consume().flystring_value());
         } else if (!m_state.await_expression_is_valid && match(TokenType::Async)) {
             if (m_program_type == Program::Type::Module)
                 syntax_error(""Identifier must not be a reserved word in modules ('async')"");
 
             target = create_ast_node<Identifier>(
                 { m_state.current_token.filename(), rule_start.position(), position() },
-                consume().value());
+                consume().flystring_value());
         }
 
         if (target.has<Empty>()) {
@@ -3076,7 +3076,7 @@ NonnullRefPtr<OptionalChain> Parser::parse_optional_chain(NonnullRefPtr<Expressi
                     auto start = position();
                     auto identifier = consume();
                     chain.append(OptionalChain::MemberReference {
-                        create_ast_node<Identifier>({ m_state.current_token.filename(), start, position() }, identifier.value()),
+                        create_ast_node<Identifier>({ m_state.current_token.filename(), start, position() }, identifier.flystring_value()),
                         OptionalChain::Mode::Optional,
                     });
                 } else {
@@ -3099,7 +3099,7 @@ NonnullRefPtr<OptionalChain> Parser::parse_optional_chain(NonnullRefPtr<Expressi
                 auto start = position();
                 auto identifier = consume();
                 chain.append(OptionalChain::MemberReference {
-                    create_ast_node<Identifier>({ m_state.current_token.filename(), start, position() }, identifier.value()),
+                    create_ast_node<Identifier>({ m_state.current_token.filename(), start, position() }, identifier.flystring_value()),
                     OptionalChain::Mode::NotOptional,
                 });
             } else {
diff --git a/Userland/Libraries/LibJS/Token.h b/Userland/Libraries/LibJS/Token.h
index cbdfda602f81..0e7d282aa21e 100644
--- a/Userland/Libraries/LibJS/Token.h
+++ b/Userland/Libraries/LibJS/Token.h
@@ -210,6 +210,15 @@ class Token {
             [](FlyString const& identifier) { return identifier.view(); },
             [](Empty) -> StringView { VERIFY_NOT_REACHED(); });
     }
+
+    FlyString flystring_value() const
+    {
+        return m_value.visit(
+            [](StringView view) -> FlyString { return view; },
+            [](FlyString const& identifier) -> FlyString { return identifier; },
+            [](Empty) -> FlyString { VERIFY_NOT_REACHED(); });
+    }
+
     StringView filename() const { return m_filename; }
     size_t line_number() const { return m_line_number; }
     size_t line_column() const { return m_line_column; }"
5c0c1e507c431d1e11f4b51e718853a4901bd1f9,2024-12-06 01:59:08,Timothy Flynn,libjs: Reverse date comparison in DifferenceISODateTime,False,Reverse date comparison in DifferenceISODateTime,libjs,"diff --git a/Libraries/LibJS/Runtime/Temporal/PlainDateTime.cpp b/Libraries/LibJS/Runtime/Temporal/PlainDateTime.cpp
index 4c87b7461da8..62293e534517 100644
--- a/Libraries/LibJS/Runtime/Temporal/PlainDateTime.cpp
+++ b/Libraries/LibJS/Runtime/Temporal/PlainDateTime.cpp
@@ -300,14 +300,14 @@ InternalDuration difference_iso_date_time(VM& vm, ISODateTime const& iso_date_ti
     // 4. Let timeSign be TimeDurationSign(timeDuration).
     auto time_sign = time_duration_sign(time_duration);
 
-    // 5. Let dateSign be CompareISODate(isoDateTime2.[[ISODate]], isoDateTime1.[[ISODate]]).
-    auto date_sign = compare_iso_date(iso_date_time2.iso_date, iso_date_time1.iso_date);
+    // 5. Let dateSign be CompareISODate(isoDateTime1.[[ISODate]], isoDateTime2.[[ISODate]]).
+    auto date_sign = compare_iso_date(iso_date_time1.iso_date, iso_date_time2.iso_date);
 
     // 6. Let adjustedDate be isoDateTime2.[[ISODate]].
     auto adjusted_date = iso_date_time2.iso_date;
 
-    // 7. If timeSign = -dateSign, then
-    if (time_sign == -date_sign) {
+    // 7. If timeSign = dateSign, then
+    if (time_sign == date_sign) {
         // a. Set adjustedDate to BalanceISODate(adjustedDate.[[Year]], adjustedDate.[[Month]], adjustedDate.[[Day]] + timeSign).
         adjusted_date = balance_iso_date(adjusted_date.year, adjusted_date.month, static_cast<double>(adjusted_date.day) + time_sign);"
270e0d4b581d31f94e79ebc7b268245fec656958,2024-04-06 10:29:36,Idan Horowitz,libweb: Replace MarkedVector with Vector in VideoTrackList,False,Replace MarkedVector with Vector in VideoTrackList,libweb,"diff --git a/Userland/Libraries/LibWeb/HTML/AudioTrackList.cpp b/Userland/Libraries/LibWeb/HTML/AudioTrackList.cpp
index 2748a3f8062f..20831c88ef12 100644
--- a/Userland/Libraries/LibWeb/HTML/AudioTrackList.cpp
+++ b/Userland/Libraries/LibWeb/HTML/AudioTrackList.cpp
@@ -17,7 +17,6 @@ JS_DEFINE_ALLOCATOR(AudioTrackList);
 
 AudioTrackList::AudioTrackList(JS::Realm& realm)
     : DOM::EventTarget(realm, MayInterfereWithIndexedPropertyAccess::Yes)
-    , m_audio_tracks(realm.heap())
 {
 }
 
diff --git a/Userland/Libraries/LibWeb/HTML/AudioTrackList.h b/Userland/Libraries/LibWeb/HTML/AudioTrackList.h
index 1d69724c08dc..bfebc42cfdc6 100644
--- a/Userland/Libraries/LibWeb/HTML/AudioTrackList.h
+++ b/Userland/Libraries/LibWeb/HTML/AudioTrackList.h
@@ -52,7 +52,7 @@ class AudioTrackList final : public DOM::EventTarget {
     virtual void initialize(JS::Realm&) override;
     virtual JS::ThrowCompletionOr<Optional<JS::PropertyDescriptor>> internal_get_own_property(JS::PropertyKey const& property_name) const override;
 
-    JS::MarkedVector<JS::NonnullGCPtr<AudioTrack>> m_audio_tracks;
+    Vector<JS::NonnullGCPtr<AudioTrack>> m_audio_tracks;
 };
 
 }
diff --git a/Userland/Libraries/LibWeb/HTML/VideoTrackList.cpp b/Userland/Libraries/LibWeb/HTML/VideoTrackList.cpp
index 616562de9675..776532259367 100644
--- a/Userland/Libraries/LibWeb/HTML/VideoTrackList.cpp
+++ b/Userland/Libraries/LibWeb/HTML/VideoTrackList.cpp
@@ -127,4 +127,11 @@ WebIDL::CallbackType* VideoTrackList::onremovetrack()
     return event_handler_attribute(HTML::EventNames::removetrack);
 }
 
+void VideoTrackList::visit_edges(JS::Cell::Visitor& visitor)
+{
+    Base::visit_edges(visitor);
+    for (auto const& track : m_video_tracks)
+        visitor.visit(track);
+}
+
 }
diff --git a/Userland/Libraries/LibWeb/HTML/VideoTrackList.h b/Userland/Libraries/LibWeb/HTML/VideoTrackList.h
index 6839101c8a38..5cbe7e75c635 100644
--- a/Userland/Libraries/LibWeb/HTML/VideoTrackList.h
+++ b/Userland/Libraries/LibWeb/HTML/VideoTrackList.h
@@ -42,6 +42,8 @@ class VideoTrackList final : public DOM::EventTarget {
 private:
     explicit VideoTrackList(JS::Realm&);
 
+    virtual void visit_edges(Visitor&) override;
+
     virtual void initialize(JS::Realm&) override;
     virtual JS::ThrowCompletionOr<Optional<JS::PropertyDescriptor>> internal_get_own_property(JS::PropertyKey const& property_name) const override;"
56b5b78d7b33a95d0c694b556c5c9e6bbccc82bd,2023-03-11 00:33:30,Ali Mohammad Pur,shell: Error out on invalid `export' argument,False,Error out on invalid `export' argument,shell,"diff --git a/Userland/Shell/Builtin.cpp b/Userland/Shell/Builtin.cpp
index d9cc2a60cecb..71900c33ca17 100644
--- a/Userland/Shell/Builtin.cpp
+++ b/Userland/Shell/Builtin.cpp
@@ -541,6 +541,10 @@ ErrorOr<int> Shell::builtin_export(Main::Arguments arguments)
 
     for (auto& value : vars) {
         auto parts = value.split_limit('=', 2);
+        if (parts.is_empty()) {
+            warnln(""Shell: Invalid export spec '{}', expected `variable=value' or `variable'"", value);
+            return 1;
+        }
 
         if (parts.size() == 1) {
             auto value = TRY(lookup_local_variable(parts[0]));"
b8fa572c6742c0f1f63da0f63c8b86835a86988d,2024-07-23 12:32:21,Kenneth Myhra,libweb: Implement formData() method steps for x-www-form-urlencoded,False,Implement formData() method steps for x-www-form-urlencoded,libweb,"diff --git a/Tests/LibWeb/Text/expected/Fetch/fetch-response-url-encoded.txt b/Tests/LibWeb/Text/expected/Fetch/fetch-response-url-encoded.txt
new file mode 100644
index 000000000000..f10581337e3d
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/Fetch/fetch-response-url-encoded.txt
@@ -0,0 +1,3 @@
+value-a
+value-b
+value-c1,value-c2
diff --git a/Tests/LibWeb/Text/input/Fetch/fetch-response-url-encoded.html b/Tests/LibWeb/Text/input/Fetch/fetch-response-url-encoded.html
new file mode 100644
index 000000000000..37f2fc88b866
--- /dev/null
+++ b/Tests/LibWeb/Text/input/Fetch/fetch-response-url-encoded.html
@@ -0,0 +1,17 @@
+<script src=""../include.js""></script>
+<script>
+    test(() => {
+        const data = ""param-a=value-a&param-b=value-b&param-c=value-c1&param-c=value-c2"";
+        const response = new Response(data, {
+            headers: {
+                ""Content-Type"": ""application/x-www-form-urlencoded"",
+            },
+        });
+
+        response.formData().then((formData) => {
+            println(formData.get(""param-a""));
+            println(formData.get(""param-b""));
+            println(formData.getAll(""param-c""));
+        });
+    });
+</script>
diff --git a/Userland/Libraries/LibWeb/Fetch/Body.cpp b/Userland/Libraries/LibWeb/Fetch/Body.cpp
index faf8636ddb9c..09619416c332 100644
--- a/Userland/Libraries/LibWeb/Fetch/Body.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/Body.cpp
@@ -15,6 +15,7 @@
 #include <LibWeb/Bindings/ExceptionOrUtils.h>
 #include <LibWeb/Bindings/HostDefined.h>
 #include <LibWeb/Bindings/MainThreadVM.h>
+#include <LibWeb/DOMURL/URLSearchParams.h>
 #include <LibWeb/Fetch/Body.h>
 #include <LibWeb/Fetch/Infrastructure/HTTP/Bodies.h>
 #include <LibWeb/FileAPI/Blob.h>
@@ -23,6 +24,7 @@
 #include <LibWeb/MimeSniff/MimeType.h>
 #include <LibWeb/Streams/ReadableStream.h>
 #include <LibWeb/WebIDL/Promise.h>
+#include <LibWeb/XHR/FormData.h>
 
 namespace Web::Fetch {
 
@@ -143,10 +145,15 @@ WebIDL::ExceptionOr<JS::Value> package_data(JS::Realm& realm, ByteBuffer bytes,
         }
         // Otherwise, if mimeType’s essence is ""application/x-www-form-urlencoded"", then:
         else if (mime_type.has_value() && mime_type->essence() == ""application/x-www-form-urlencoded""sv) {
-            // FIXME: 1. Let entries be the result of parsing bytes.
-            // FIXME: 2. If entries is failure, then throw a TypeError.
-            // FIXME: 3. Return a new FormData object whose entry list is entries.
-            return JS::js_null();
+            // 1. Let entries be the result of parsing bytes.
+            auto entries = DOMURL::url_decode(StringView { bytes });
+
+            // 2. If entries is failure, then throw a TypeError.
+            if (entries.is_error())
+                return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, entries.error().string_literal() };
+
+            // 3. Return a new FormData object whose entry list is entries.
+            return TRY(XHR::FormData::create(realm, entries.release_value()));
         }
         // Otherwise, throw a TypeError.
         else {
diff --git a/Userland/Libraries/LibWeb/XHR/FormData.cpp b/Userland/Libraries/LibWeb/XHR/FormData.cpp
index 7165449fbb55..f1ae609f2159 100644
--- a/Userland/Libraries/LibWeb/XHR/FormData.cpp
+++ b/Userland/Libraries/LibWeb/XHR/FormData.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023, Kenneth Myhra <kennethmyhra@serenityos.org>
+ * Copyright (c) 2023-2024, Kenneth Myhra <kennethmyhra@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -40,6 +40,16 @@ WebIDL::ExceptionOr<JS::NonnullGCPtr<FormData>> FormData::construct_impl(JS::Rea
     return realm.heap().allocate<FormData>(realm, realm, move(entry_list));
 }
 
+WebIDL::ExceptionOr<JS::NonnullGCPtr<FormData>> FormData::create(JS::Realm& realm, Vector<DOMURL::QueryParam> entry_list)
+{
+    Vector<FormDataEntry> list;
+    list.ensure_capacity(entry_list.size());
+    for (auto& entry : entry_list)
+        list.unchecked_append({ .name = move(entry.name), .value = move(entry.value) });
+
+    return construct_impl(realm, move(list));
+}
+
 FormData::FormData(JS::Realm& realm, Vector<FormDataEntry> entry_list)
     : PlatformObject(realm)
     , m_entry_list(move(entry_list))
diff --git a/Userland/Libraries/LibWeb/XHR/FormData.h b/Userland/Libraries/LibWeb/XHR/FormData.h
index f607ba27cbc0..7ed5fe3517b1 100644
--- a/Userland/Libraries/LibWeb/XHR/FormData.h
+++ b/Userland/Libraries/LibWeb/XHR/FormData.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2023, Kenneth Myhra <kennethmyhra@serenityos.org>
+ * Copyright (c) 2023-2024, Kenneth Myhra <kennethmyhra@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -8,6 +8,7 @@
 
 #include <LibWeb/Bindings/FormDataPrototype.h>
 #include <LibWeb/Bindings/PlatformObject.h>
+#include <LibWeb/DOMURL/URLSearchParams.h>
 #include <LibWeb/Forward.h>
 #include <LibWeb/HTML/HTMLFormElement.h>
 #include <LibWeb/WebIDL/ExceptionOr.h>
@@ -26,6 +27,8 @@ class FormData : public Bindings::PlatformObject {
     static WebIDL::ExceptionOr<JS::NonnullGCPtr<FormData>> construct_impl(JS::Realm&, JS::GCPtr<HTML::HTMLFormElement> form = {});
     static WebIDL::ExceptionOr<JS::NonnullGCPtr<FormData>> construct_impl(JS::Realm&, Vector<FormDataEntry> entry_list);
 
+    static WebIDL::ExceptionOr<JS::NonnullGCPtr<FormData>> create(JS::Realm&, Vector<DOMURL::QueryParam> entry_list);
+
     WebIDL::ExceptionOr<void> append(String const& name, String const& value);
     WebIDL::ExceptionOr<void> append(String const& name, JS::NonnullGCPtr<FileAPI::Blob> const& blob_value, Optional<String> const& filename = {});
     void delete_(String const& name);"
ed0740d73c40dfdf6f1422629f37a0e9930d80c1,2020-06-20 18:13:27,Nico Weber,"libc: In posix_spawn(), use _exit instead of exit on child error",False,"In posix_spawn(), use _exit instead of exit on child error",libc,"diff --git a/Libraries/LibC/spawn.cpp b/Libraries/LibC/spawn.cpp
index 4c13ccd1e24c..c68967fe70c4 100644
--- a/Libraries/LibC/spawn.cpp
+++ b/Libraries/LibC/spawn.cpp
@@ -56,23 +56,23 @@ extern ""C"" {
         if (flags & POSIX_SPAWN_RESETIDS) {
             if (seteuid(getuid()) < 0) {
                 perror(""posix_spawn seteuid"");
-                exit(127);
+                _exit(127);
             }
             if (setegid(getgid()) < 0) {
                 perror(""posix_spawn setegid"");
-                exit(127);
+                _exit(127);
             }
         }
         if (flags & POSIX_SPAWN_SETPGROUP) {
             if (setpgid(0, attr->pgroup) < 0) {
                 perror(""posix_spawn setpgid"");
-                exit(127);
+                _exit(127);
             }
         }
         if (flags & POSIX_SPAWN_SETSCHEDPARAM) {
             if (sched_setparam(0, &attr->schedparam) < 0) {
                 perror(""posix_spawn sched_setparam"");
-                exit(127);
+                _exit(127);
             }
         }
         if (flags & POSIX_SPAWN_SETSIGDEF) {
@@ -85,20 +85,20 @@ extern ""C"" {
             for (int i = 0; i < NSIG; ++i) {
                 if (sigismember(&sigdefault, i) && sigaction(i, &default_action, nullptr) < 0) {
                     perror(""posix_spawn sigaction"");
-                    exit(127);
+                    _exit(127);
                 }
             }
         }
         if (flags & POSIX_SPAWN_SETSIGMASK) {
             if (sigprocmask(SIG_SETMASK, &attr->sigmask, nullptr) < 0) {
                 perror(""posix_spawn sigprocmask"");
-                exit(127);
+                _exit(127);
             }
         }
         if (flags & POSIX_SPAWN_SETSID) {
             if (setsid() < 0) {
                 perror(""posix_spawn setsid"");
-                exit(127);
+                _exit(127);
             }
         }
 
@@ -109,14 +109,14 @@ extern ""C"" {
         for (const auto& action : file_actions->state->actions) {
             if (action() < 0) {
                 perror(""posix_spawn file action"");
-                exit(127);
+                _exit(127);
             }
         }
     }
 
     exec(path, argv, envp);
     perror(""posix_spawn exec"");
-    exit(127);
+    _exit(127);
 }
 
 int posix_spawn(pid_t* out_pid, const char* path, const posix_spawn_file_actions_t* file_actions, const posix_spawnattr_t* attr, char* const argv[], char* const envp[])"
05972668d14ac0b4fb3410f7a9d0cef3ab2a89d6,2020-08-06 14:05:22,AnotherTest,kernel: Send a SIGCHLD to the parent upon suspension of a process,False,Send a SIGCHLD to the parent upon suspension of a process,kernel,"diff --git a/Kernel/TTY/TTY.cpp b/Kernel/TTY/TTY.cpp
index 1743bf86d269..bc9ff14ff3ea 100644
--- a/Kernel/TTY/TTY.cpp
+++ b/Kernel/TTY/TTY.cpp
@@ -155,6 +155,10 @@ void TTY::emit(u8 ch)
         if (ch == m_termios.c_cc[VSUSP]) {
             dbg() << tty_name() << "": VSUSP pressed!"";
             generate_signal(SIGTSTP);
+            if (auto process = Process::from_pid(m_pgid)) {
+                if (auto parent = Process::from_pid(process->ppid()))
+                    (void)parent->send_signal(SIGCHLD, process);
+            }
             return;
         }
     }
@@ -390,5 +394,4 @@ void TTY::hang_up()
 {
     generate_signal(SIGHUP);
 }
-
 }"
de87258b4f18965f5e586bb816950ab58293063f,2019-08-21 20:19:11,Andreas Kling,"userland: Remove immature ""tc"" and ""uc"" programs in favor of ""nc""",False,"Remove immature ""tc"" and ""uc"" programs in favor of ""nc""",userland,"diff --git a/Userland/tc.cpp b/Userland/tc.cpp
deleted file mode 100644
index 857d861e6575..000000000000
--- a/Userland/tc.cpp
+++ /dev/null
@@ -1,90 +0,0 @@
-#include <arpa/inet.h>
-#include <netinet/in.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-int main(int argc, char** argv)
-{
-    const char* addr_str = ""127.0.0.1"";
-    if (argc > 1)
-        addr_str = argv[1];
-
-    int fd = socket(AF_INET, SOCK_STREAM, 0);
-    if (fd < 0) {
-        perror(""socket"");
-        return 1;
-    }
-
-    struct timeval timeout {
-        3, 0
-    };
-    int rc = setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof(timeout));
-    if (rc < 0) {
-        perror(""setsockopt"");
-        return 1;
-    }
-    rc = setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
-    if (rc < 0) {
-        perror(""setsockopt"");
-        return 1;
-    }
-
-    struct sockaddr_in dst_addr;
-    memset(&dst_addr, 0, sizeof(dst_addr));
-
-    dst_addr.sin_family = AF_INET;
-    dst_addr.sin_port = htons(80);
-    rc = inet_pton(AF_INET, addr_str, &dst_addr.sin_addr);
-    if (rc <= 0) {
-        perror(""inet_pton"");
-        return 1;
-    }
-
-    printf(""Connecting to %s..."", addr_str);
-    fflush(stdout);
-    rc = connect(fd, (struct sockaddr*)&dst_addr, sizeof(dst_addr));
-    if (rc < 0) {
-        perror(""connect"");
-        return 1;
-    }
-    printf(""ok!\n"");
-
-    char buffer[BUFSIZ];
-    const char* msg = ""GET / HTTP/1.0\r\n\r\n"";
-
-    printf(""Sending a greeting..."");
-    rc = send(fd, (const char*)msg, strlen(msg), 0);
-    if (rc < 0) {
-        perror(""send"");
-        return 1;
-    }
-    printf(""ok!\n"");
-
-    printf(""Waiting for response..."");
-    size_t total_recv = 0;
-    for (;;) {
-        ssize_t nrecv = recv(fd, buffer, sizeof(buffer), 0);
-        if (nrecv < 0) {
-            perror(""recvfrom"");
-            return 1;
-        }
-        if (nrecv == 0)
-            break;
-        total_recv += nrecv;
-        buffer[nrecv] = '\0';
-        printf(""\033[36;1m%s\033[0m"", buffer);
-    }
-
-    printf(""(%zu bytes received)\n"", total_recv);
-    rc = close(fd);
-    if (rc < 0) {
-        perror(""close"");
-        return 1;
-    }
-    return 0;
-}
diff --git a/Userland/uc.cpp b/Userland/uc.cpp
deleted file mode 100644
index 5fe908ee5440..000000000000
--- a/Userland/uc.cpp
+++ /dev/null
@@ -1,61 +0,0 @@
-#include <arpa/inet.h>
-#include <netinet/in.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/socket.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-int main(int argc, char** argv)
-{
-    const char* addr_str = ""127.0.0.1"";
-    if (argc > 1)
-        addr_str = argv[1];
-
-    int fd = socket(AF_INET, SOCK_DGRAM, 0);
-    if (fd < 0) {
-        perror(""socket"");
-        return 1;
-    }
-
-    struct timeval timeout {
-        5, 0
-    };
-    int rc = setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof(timeout));
-    if (rc < 0) {
-        perror(""setsockopt"");
-        return 1;
-    }
-
-    struct sockaddr_in dst_addr;
-    memset(&dst_addr, 0, sizeof(dst_addr));
-
-    dst_addr.sin_family = AF_INET;
-    dst_addr.sin_port = htons(8080);
-    rc = inet_pton(AF_INET, addr_str, &dst_addr.sin_addr);
-    if (rc <= 0) {
-        perror(""inet_pton"");
-        return 1;
-    }
-
-    char buffer[BUFSIZ];
-    const char* msg = ""Test message"";
-
-    sendto(fd, (const char*)msg, strlen(msg), 0, (const struct sockaddr*)&dst_addr, sizeof(dst_addr));
-    printf(""Message sent.\n"");
-
-    struct sockaddr_in src_addr;
-    socklen_t src_addr_len = sizeof(src_addr);
-    ssize_t nrecv = recvfrom(fd, (char*)buffer, sizeof(buffer), 0, (struct sockaddr*)&src_addr, &src_addr_len);
-    if (nrecv < 0) {
-        perror(""recvfrom"");
-        return 1;
-    }
-    buffer[nrecv] = '\0';
-    printf(""Server: %s\n"", buffer);
-
-    close(fd);
-    return 0;
-}"
04aec4a03248057aef7046625d2e687dfc9b02d5,2023-10-22 00:34:02,Nico Weber,libpdf: Don't log CFF Copyright tag as unknown,False,Don't log CFF Copyright tag as unknown,libpdf,"diff --git a/Userland/Libraries/LibPDF/Fonts/CFF.cpp b/Userland/Libraries/LibPDF/Fonts/CFF.cpp
index 91c89393c7e2..d920861e168d 100644
--- a/Userland/Libraries/LibPDF/Fonts/CFF.cpp
+++ b/Userland/Libraries/LibPDF/Fonts/CFF.cpp
@@ -140,6 +140,7 @@ PDFErrorOr<NonnullRefPtr<CFF>> CFF::create(ReadonlyBytes const& cff_bytes, RefPt
             case TopDictOperator::FontBBox:
             case TopDictOperator::UniqueID:
             case TopDictOperator::XUID:
+            case TopDictOperator::Copyright:
             case TopDictOperator::IsFixedPitch:
             case TopDictOperator::ItalicAngle:
             case TopDictOperator::UnderlinePosition:
diff --git a/Userland/Libraries/LibPDF/Fonts/CFF.h b/Userland/Libraries/LibPDF/Fonts/CFF.h
index fadb013c94b4..49b705163ea7 100644
--- a/Userland/Libraries/LibPDF/Fonts/CFF.h
+++ b/Userland/Libraries/LibPDF/Fonts/CFF.h
@@ -34,7 +34,8 @@ class CFF : public Type1FontProgram {
         Encoding,
         CharStrings,
         Private,
-        IsFixedPitch = (12 << 8 | 1),
+        Copyright = (12 << 8),
+        IsFixedPitch,
         ItalicAngle,
         UnderlinePosition,
         UnderlineThickness,"
1a1ff8eb5ee6a53a4963628c5e65f10ec3421114,2023-05-23 14:46:36,Andreas Kling,ladybird: Default to HTTPS instead of HTTP if no protocol is specified,False,Default to HTTPS instead of HTTP if no protocol is specified,ladybird,"diff --git a/Ladybird/Tab.cpp b/Ladybird/Tab.cpp
index c2e9592e49d2..98168a46defd 100644
--- a/Ladybird/Tab.cpp
+++ b/Ladybird/Tab.cpp
@@ -468,7 +468,7 @@ void Tab::focus_location_editor()
 void Tab::navigate(QString url, LoadType load_type)
 {
     if (!url.startsWith(""http://"", Qt::CaseInsensitive) && !url.startsWith(""https://"", Qt::CaseInsensitive) && !url.startsWith(""file://"", Qt::CaseInsensitive) && !url.startsWith(""about:"", Qt::CaseInsensitive))
-        url = ""http://"" + url;
+        url = ""https://"" + url;
     m_is_history_navigation = (load_type == LoadType::HistoryNavigation);
     view().load(ak_deprecated_string_from_qstring(url));
 }
diff --git a/Ladybird/main.cpp b/Ladybird/main.cpp
index 0c1bb0a4e9df..739e631df865 100644
--- a/Ladybird/main.cpp
+++ b/Ladybird/main.cpp
@@ -84,7 +84,7 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         if (FileSystem::exists(raw_url))
             url = URL::create_with_file_scheme(TRY(FileSystem::real_path(raw_url)).to_deprecated_string());
         else if (!url.is_valid())
-            url = DeprecatedString::formatted(""http://{}"", raw_url);
+            url = DeprecatedString::formatted(""https://{}"", raw_url);
         return url;
     };"
4970c448bfdf308d8f6ae9316b8a5429b4d848de,2020-07-14 21:25:39,thankyouverycool,libgui: Draw contiguous frame if GroupBox title is left empty,False,Draw contiguous frame if GroupBox title is left empty,libgui,"diff --git a/Libraries/LibGUI/GroupBox.cpp b/Libraries/LibGUI/GroupBox.cpp
index 1ff52384f935..17b722f1f20a 100644
--- a/Libraries/LibGUI/GroupBox.cpp
+++ b/Libraries/LibGUI/GroupBox.cpp
@@ -52,9 +52,11 @@ void GroupBox::paint_event(PaintEvent& event)
     };
     Gfx::StylePainter::paint_frame(painter, frame_rect, palette(), Gfx::FrameShape::Box, Gfx::FrameShadow::Sunken, 2);
 
-    Gfx::IntRect text_rect { 4, 0, font().width(m_title) + 6, font().glyph_height() };
-    painter.fill_rect(text_rect, palette().button());
-    painter.draw_text(text_rect, m_title, Gfx::TextAlignment::Center, palette().button_text());
+    if (!m_title.is_empty()) {
+        Gfx::IntRect text_rect { 4, 0, font().width(m_title) + 6, font().glyph_height() };
+        painter.fill_rect(text_rect, palette().button());
+        painter.draw_text(text_rect, m_title, Gfx::TextAlignment::Center, palette().button_text());
+    }
 }
 
 void GroupBox::set_title(const StringView& title)"
91378ded963f2b12643f4412950bf5461d1a5e9a,2024-02-28 18:14:12,Aliaksandr Kalenik,libweb: Apply scroll offset after clip in PaintableBox::before_paint(),False,Apply scroll offset after clip in PaintableBox::before_paint(),libweb,"diff --git a/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp b/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
index c21dfeed946b..a410c0847641 100644
--- a/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
+++ b/Userland/Libraries/LibWeb/Painting/PaintableBox.cpp
@@ -240,8 +240,8 @@ void PaintableBox::before_paint(PaintContext& context, [[maybe_unused]] PaintPha
     if (!is_visible())
         return;
 
-    apply_scroll_offset(context, phase);
     apply_clip_overflow_rect(context, phase);
+    apply_scroll_offset(context, phase);
 }
 
 void PaintableBox::after_paint(PaintContext& context, [[maybe_unused]] PaintPhase phase) const
@@ -249,8 +249,8 @@ void PaintableBox::after_paint(PaintContext& context, [[maybe_unused]] PaintPhas
     if (!is_visible())
         return;
 
-    clear_clip_overflow_rect(context, phase);
     reset_scroll_offset(context, phase);
+    clear_clip_overflow_rect(context, phase);
 }
 
 void PaintableBox::paint(PaintContext& context, PaintPhase phase) const"
fa1ba7fadf721807da4f0e5dab6f4656a56b0fbd,2023-02-24 23:54:39,Kenneth Myhra,libweb: Mark JS::Promise* return value for digest() with JS::NNGCPtr,False,Mark JS::Promise* return value for digest() with JS::NNGCPtr,libweb,"diff --git a/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.cpp b/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
index 5bb9104f1ce3..64c9a3834f45 100644
--- a/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
+++ b/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
@@ -35,7 +35,7 @@ JS::ThrowCompletionOr<void> SubtleCrypto::initialize(JS::Realm& realm)
 }
 
 // https://w3c.github.io/webcrypto/#dfn-SubtleCrypto-method-digest
-JS::Promise* SubtleCrypto::digest(String const& algorithm, JS::Handle<JS::Object> const& data)
+JS::NonnullGCPtr<JS::Promise> SubtleCrypto::digest(String const& algorithm, JS::Handle<JS::Object> const& data)
 {
     auto& realm = this->realm();
 
diff --git a/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.h b/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.h
index 0113cf16b12e..ad4c700d7510 100644
--- a/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.h
+++ b/Userland/Libraries/LibWeb/Crypto/SubtleCrypto.h
@@ -19,7 +19,7 @@ class SubtleCrypto final : public Bindings::PlatformObject {
 
     virtual ~SubtleCrypto() override;
 
-    JS::Promise* digest(String const& algorithm, JS::Handle<JS::Object> const& data);
+    JS::NonnullGCPtr<JS::Promise> digest(String const& algorithm, JS::Handle<JS::Object> const& data);
 
 private:
     explicit SubtleCrypto(JS::Realm&);"
6c2f0316d97d22bae876cdc14f750d416d83e61a,2021-02-17 21:07:11,Andreas Kling,kernel: Convert snprintf() => String::formatted()/number(),False,Convert snprintf() => String::formatted()/number(),kernel,"diff --git a/Kernel/FileSystem/ProcFS.cpp b/Kernel/FileSystem/ProcFS.cpp
index ec07b6a4fa09..e98154094b23 100644
--- a/Kernel/FileSystem/ProcFS.cpp
+++ b/Kernel/FileSystem/ProcFS.cpp
@@ -1260,9 +1260,7 @@ KResult ProcFSInode::traverse_as_directory(Function<bool(const FS::DirectoryEntr
                 callback({ { entry.name, strlen(entry.name) }, to_identifier(fsid(), PDI_Root, 0, (ProcFileType)entry.proc_file_type), 0 });
         }
         for (auto pid_child : Process::all_pids()) {
-            char name[16];
-            size_t name_length = (size_t)snprintf(name, sizeof(name), ""%d"", pid_child.value());
-            callback({ { name, name_length }, to_identifier(fsid(), PDI_Root, pid_child, FI_PID), 0 });
+            callback({ String::number(pid_child.value()), to_identifier(fsid(), PDI_Root, pid_child, FI_PID), 0 });
         }
         break;
 
@@ -1305,9 +1303,7 @@ KResult ProcFSInode::traverse_as_directory(Function<bool(const FS::DirectoryEntr
             auto description = process->file_description(i);
             if (!description)
                 continue;
-            char name[16];
-            size_t name_length = (size_t)snprintf(name, sizeof(name), ""%d"", i);
-            callback({ { name, name_length }, to_identifier_with_fd(fsid(), pid, i), 0 });
+            callback({ String::number(i), to_identifier_with_fd(fsid(), pid, i), 0 });
         }
     } break;
 
@@ -1318,9 +1314,7 @@ KResult ProcFSInode::traverse_as_directory(Function<bool(const FS::DirectoryEntr
             return ENOENT;
         process->for_each_thread([&](Thread& thread) -> IterationDecision {
             int tid = thread.tid().value();
-            char name[16];
-            size_t name_length = (size_t)snprintf(name, sizeof(name), ""%d"", tid);
-            callback({ { name, name_length }, to_identifier_with_stack(fsid(), tid), 0 });
+            callback({ String::number(tid), to_identifier_with_stack(fsid(), tid), 0 });
             return IterationDecision::Continue;
         });
     } break;
diff --git a/Kernel/TTY/SlavePTY.cpp b/Kernel/TTY/SlavePTY.cpp
index 5cc09eaa9a6c..cb5c707d31ed 100644
--- a/Kernel/TTY/SlavePTY.cpp
+++ b/Kernel/TTY/SlavePTY.cpp
@@ -37,7 +37,7 @@ SlavePTY::SlavePTY(MasterPTY& master, unsigned index)
     , m_master(master)
     , m_index(index)
 {
-    snprintf(m_tty_name, sizeof(m_tty_name), ""/dev/pts/%u"", m_index);
+    m_tty_name = String::formatted(""/dev/pts/{}"", m_index);
     auto process = Process::current();
     set_uid(process->uid());
     set_gid(process->gid());
diff --git a/Kernel/TTY/SlavePTY.h b/Kernel/TTY/SlavePTY.h
index fc9c46311fb1..4fd889ed9b81 100644
--- a/Kernel/TTY/SlavePTY.h
+++ b/Kernel/TTY/SlavePTY.h
@@ -66,7 +66,7 @@ class SlavePTY final : public TTY {
     RefPtr<MasterPTY> m_master;
     time_t m_time_of_last_write { 0 };
     unsigned m_index { 0 };
-    char m_tty_name[32];
+    String m_tty_name;
 };
 
 }"
d470df1c6a3a211ac26f256d1bfd04567acf3d37,2023-02-10 20:07:51,Julian Offenhäuser,base: Add LiberationSans and LiberationMono fonts,False,Add LiberationSans and LiberationMono fonts,base,"diff --git a/Base/res/fonts/LiberationMono-Bold.ttf b/Base/res/fonts/LiberationMono-Bold.ttf
new file mode 100644
index 000000000000..2e46737ac7ab
Binary files /dev/null and b/Base/res/fonts/LiberationMono-Bold.ttf differ
diff --git a/Base/res/fonts/LiberationMono-BoldItalic.ttf b/Base/res/fonts/LiberationMono-BoldItalic.ttf
new file mode 100644
index 000000000000..d1f46d7cd8bf
Binary files /dev/null and b/Base/res/fonts/LiberationMono-BoldItalic.ttf differ
diff --git a/Base/res/fonts/LiberationMono-Italic.ttf b/Base/res/fonts/LiberationMono-Italic.ttf
new file mode 100644
index 000000000000..954c39436ff2
Binary files /dev/null and b/Base/res/fonts/LiberationMono-Italic.ttf differ
diff --git a/Base/res/fonts/LiberationMono-Regular.ttf b/Base/res/fonts/LiberationMono-Regular.ttf
new file mode 100644
index 000000000000..e774859cba4b
Binary files /dev/null and b/Base/res/fonts/LiberationMono-Regular.ttf differ
diff --git a/Base/res/fonts/LiberationSans-Bold.ttf b/Base/res/fonts/LiberationSans-Bold.ttf
new file mode 100644
index 000000000000..dc5d57f15f09
Binary files /dev/null and b/Base/res/fonts/LiberationSans-Bold.ttf differ
diff --git a/Base/res/fonts/LiberationSans-BoldItalic.ttf b/Base/res/fonts/LiberationSans-BoldItalic.ttf
new file mode 100644
index 000000000000..158488a12ed3
Binary files /dev/null and b/Base/res/fonts/LiberationSans-BoldItalic.ttf differ
diff --git a/Base/res/fonts/LiberationSans-Italic.ttf b/Base/res/fonts/LiberationSans-Italic.ttf
new file mode 100644
index 000000000000..25970d9d57a4
Binary files /dev/null and b/Base/res/fonts/LiberationSans-Italic.ttf differ
diff --git a/Base/res/fonts/LiberationSans-Regular.ttf b/Base/res/fonts/LiberationSans-Regular.ttf
new file mode 100644
index 000000000000..e6339859d0b2
Binary files /dev/null and b/Base/res/fonts/LiberationSans-Regular.ttf differ"
f7f9d09e7213b15d5f44346c8368f593e1394102,2021-11-02 22:23:22,thislooksfun,libgui: Remove GUI::AutocompleteProvider::Entry::kind,False,Remove GUI::AutocompleteProvider::Entry::kind,libgui,"diff --git a/Userland/DevTools/HackStudio/AutoCompleteResponse.h b/Userland/DevTools/HackStudio/AutoCompleteResponse.h
index cc4a97a48ed9..f394fa8ff110 100644
--- a/Userland/DevTools/HackStudio/AutoCompleteResponse.h
+++ b/Userland/DevTools/HackStudio/AutoCompleteResponse.h
@@ -20,7 +20,6 @@ inline bool encode(IPC::Encoder& encoder, const GUI::AutocompleteProvider::Entry
 {
     encoder << response.completion;
     encoder << (u64)response.partial_input_length;
-    encoder << (u32)response.kind;
     encoder << (u32)response.language;
     encoder << response.display_text;
     return true;
@@ -29,17 +28,14 @@ inline bool encode(IPC::Encoder& encoder, const GUI::AutocompleteProvider::Entry
 template<>
 inline bool decode(IPC::Decoder& decoder, GUI::AutocompleteProvider::Entry& response)
 {
-    u32 kind = 0;
     u32 language = 0;
     u64 partial_input_length = 0;
     bool ok = decoder.decode(response.completion)
         && decoder.decode(partial_input_length)
-        && decoder.decode(kind)
         && decoder.decode(language)
         && decoder.decode(response.display_text);
 
     if (ok) {
-        response.kind = static_cast<GUI::AutocompleteProvider::CompletionKind>(kind);
         response.language = static_cast<GUI::AutocompleteProvider::Language>(language);
         response.partial_input_length = partial_input_length;
     }
diff --git a/Userland/DevTools/HackStudio/LanguageServers/Cpp/CppComprehensionEngine.cpp b/Userland/DevTools/HackStudio/LanguageServers/Cpp/CppComprehensionEngine.cpp
index 0571ce906439..42ead5e2d469 100644
--- a/Userland/DevTools/HackStudio/LanguageServers/Cpp/CppComprehensionEngine.cpp
+++ b/Userland/DevTools/HackStudio/LanguageServers/Cpp/CppComprehensionEngine.cpp
@@ -165,13 +165,13 @@ Vector<GUI::AutocompleteProvider::Entry> CppComprehensionEngine::autocomplete_na
 
     Vector<GUI::AutocompleteProvider::Entry> suggestions;
     for (auto& symbol : matches) {
-        suggestions.append({ symbol.name.name, partial_text.length(), GUI::AutocompleteProvider::CompletionKind::Identifier });
+        suggestions.append({ symbol.name.name, partial_text.length() });
     }
 
     if (reference_scope.is_empty()) {
         for (auto& preprocessor_name : document.preprocessor().definitions().keys()) {
             if (preprocessor_name.starts_with(partial_text)) {
-                suggestions.append({ preprocessor_name, partial_text.length(), GUI::AutocompleteProvider::CompletionKind::PreprocessorDefinition });
+                suggestions.append({ preprocessor_name, partial_text.length() });
             }
         }
     }
@@ -215,7 +215,7 @@ Vector<GUI::AutocompleteProvider::Entry> CppComprehensionEngine::autocomplete_pr
     Vector<GUI::AutocompleteProvider::Entry> suggestions;
     for (auto& prop : properties_of_type(document, type)) {
         if (prop.name.name.starts_with(partial_text)) {
-            suggestions.append({ prop.name.name, partial_text.length(), GUI::AutocompleteProvider::CompletionKind::Identifier });
+            suggestions.append({ prop.name.name, partial_text.length() });
         }
     }
     return suggestions;
@@ -642,11 +642,15 @@ Optional<Vector<GUI::AutocompleteProvider::Entry>> CppComprehensionEngine::try_a
     VERIFY(include_path_token.type() == Token::Type::IncludePath);
     auto partial_include = include_path_token.text().trim_whitespace();
 
+    enum IncludeType {
+        Project,
+        System,
+    } include_type { Project };
+
     String include_root;
-    auto include_type = GUI::AutocompleteProvider::CompletionKind::ProjectInclude;
     if (partial_include.starts_with(""<"")) {
         include_root = ""/usr/include/"";
-        include_type = GUI::AutocompleteProvider::CompletionKind::SystemInclude;
+        include_type = System;
     } else if (partial_include.starts_with(""\"""")) {
         include_root = filedb().project_root();
     } else
@@ -670,8 +674,8 @@ Optional<Vector<GUI::AutocompleteProvider::Entry>> CppComprehensionEngine::try_a
         if (!(path.ends_with("".h"") || Core::File::is_directory(LexicalPath::join(full_dir, path).string())))
             continue;
         if (path.starts_with(partial_basename)) {
-            auto completion = include_type == GUI::AutocompleteProvider::CompletionKind::ProjectInclude ? String::formatted(""<{}>"", path) : String::formatted(""\""{}\"""", path);
-            options.append({ completion, partial_basename.length() + 1, include_type, GUI::AutocompleteProvider::Language::Cpp, path });
+            auto completion = include_type == System ? String::formatted(""<{}>"", path) : String::formatted(""\""{}\"""", path);
+            options.append({ completion, partial_basename.length() + 1, GUI::AutocompleteProvider::Language::Cpp, path });
         }
     }
 
diff --git a/Userland/Libraries/LibGUI/AutocompleteProvider.cpp b/Userland/Libraries/LibGUI/AutocompleteProvider.cpp
index 08b7538716b9..a6f73bde0414 100644
--- a/Userland/Libraries/LibGUI/AutocompleteProvider.cpp
+++ b/Userland/Libraries/LibGUI/AutocompleteProvider.cpp
@@ -32,7 +32,6 @@ class AutocompleteSuggestionModel final : public GUI::Model {
     enum InternalRole {
         __ModelRoleCustom = (int)GUI::ModelRole::Custom,
         PartialInputLength,
-        Kind,
         Completion,
     };
 
@@ -65,9 +64,6 @@ class AutocompleteSuggestionModel final : public GUI::Model {
             }
         }
 
-        if ((int)role == InternalRole::Kind)
-            return (u32)suggestion.kind;
-
         if ((int)role == InternalRole::PartialInputLength)
             return (i64)suggestion.partial_input_length;
 
diff --git a/Userland/Libraries/LibGUI/AutocompleteProvider.h b/Userland/Libraries/LibGUI/AutocompleteProvider.h
index 109ec94060a0..832989b37ec5 100644
--- a/Userland/Libraries/LibGUI/AutocompleteProvider.h
+++ b/Userland/Libraries/LibGUI/AutocompleteProvider.h
@@ -20,13 +20,6 @@ class AutocompleteProvider {
 public:
     virtual ~AutocompleteProvider() { }
 
-    enum class CompletionKind {
-        Identifier,
-        PreprocessorDefinition,
-        SystemInclude,
-        ProjectInclude,
-    };
-
     enum class Language {
         Unspecified,
         Cpp,
@@ -35,7 +28,6 @@ class AutocompleteProvider {
     struct Entry {
         String completion;
         size_t partial_input_length { 0 };
-        CompletionKind kind { CompletionKind::Identifier };
         Language language { Language::Unspecified };
         String display_text {};
     };"
682f0ac93b91172e87d50bb65f3a7e4b7338de32,2020-04-25 01:58:05,Andreas Kling,browser: React to favicon notifications and put favicons in the tabs!,False,React to favicon notifications and put favicons in the tabs!,browser,"diff --git a/Applications/Browser/Tab.cpp b/Applications/Browser/Tab.cpp
index f4ff7ded85de..02bd5b208b44 100644
--- a/Applications/Browser/Tab.cpp
+++ b/Applications/Browser/Tab.cpp
@@ -154,6 +154,11 @@ Tab::Tab()
             on_title_change(m_title);
     };
 
+    m_html_widget->on_favicon_change = [this](auto& bitmap) {
+        if (on_favicon_change)
+            on_favicon_change(bitmap);
+    };
+
     auto focus_location_box_action = GUI::Action::create(""Focus location box"", { Mod_Ctrl, Key_L }, [this](auto&) {
         m_location_box->select_all();
         m_location_box->set_focus(true);
diff --git a/Applications/Browser/Tab.h b/Applications/Browser/Tab.h
index 3d910827e4d0..5eaccd3d5e67 100644
--- a/Applications/Browser/Tab.h
+++ b/Applications/Browser/Tab.h
@@ -46,6 +46,7 @@ class Tab final : public GUI::Widget {
     Function<void(String)> on_title_change;
     Function<void(URL&)> on_tab_open_request;
     Function<void(Tab&)> on_tab_close_request;
+    Function<void(const Gfx::Bitmap&)> on_favicon_change;
 
     const String& title() const { return m_title; }
 
diff --git a/Applications/Browser/main.cpp b/Applications/Browser/main.cpp
index b931b8294665..8a0c99b8401a 100644
--- a/Applications/Browser/main.cpp
+++ b/Applications/Browser/main.cpp
@@ -85,6 +85,7 @@ int main(int argc, char** argv)
     widget.layout()->set_spacing(2);
 
     auto& tab_widget = widget.add<GUI::TabWidget>();
+    tab_widget.set_text_alignment(Gfx::TextAlignment::CenterLeft);
     tab_widget.set_container_padding(0);
 
     tab_widget.on_change = [&](auto& active_widget) {
@@ -95,16 +96,25 @@ int main(int argc, char** argv)
 
     Browser::WindowActions window_actions(*window);
 
+    auto default_favicon = Gfx::Bitmap::load_from_file(""/res/icons/16x16/filetype-html.png"");
+    ASSERT(default_favicon);
+
     Function<void(URL url, bool activate)> create_new_tab;
     create_new_tab = [&](auto url, auto activate) {
         auto& new_tab = tab_widget.add_tab<Browser::Tab>(""New tab"");
 
+        tab_widget.set_tab_icon(new_tab, default_favicon);
+
         new_tab.on_title_change = [&](auto title) {
             tab_widget.set_tab_title(new_tab, title);
             if (tab_widget.active_widget() == &new_tab)
                 window->set_title(String::format(""%s - Browser"", title.characters()));
         };
 
+        new_tab.on_favicon_change = [&](auto& bitmap) {
+            tab_widget.set_tab_icon(new_tab, &bitmap);
+        };
+
         new_tab.on_tab_open_request = [&](auto& url) {
             create_new_tab(url, true);
         };"
239520ae549b21f1700e966d45eb0daaac939ae1,2021-11-05 06:07:00,Andreas Kling,windowserver: Remove redundant Window::set_visible() in Menu::do_popup(),False,Remove redundant Window::set_visible() in Menu::do_popup(),windowserver,"diff --git a/Userland/Services/WindowServer/Menu.cpp b/Userland/Services/WindowServer/Menu.cpp
index e6c404d8ff9e..f69b8629b5a5 100644
--- a/Userland/Services/WindowServer/Menu.cpp
+++ b/Userland/Services/WindowServer/Menu.cpp
@@ -638,7 +638,6 @@ void Menu::do_popup(const Gfx::IntPoint& position, bool make_input, bool as_subm
     }
 
     window.move_to(adjusted_pos);
-    set_visible(true);
     MenuManager::the().open_menu(*this, make_input);
     WindowManager::the().did_popup_a_menu({});
 }"
8b99fb26d919a0326390ecb2d21007edf20eb3e7,2021-12-28 13:47:06,Brian Gianforcaro,kernel: Use type alias for Kmalloc SubHeap and SlabBlock list types,False,Use type alias for Kmalloc SubHeap and SlabBlock list types,kernel,"diff --git a/Kernel/Heap/kmalloc.cpp b/Kernel/Heap/kmalloc.cpp
index 147f502716e6..1d82053781de 100644
--- a/Kernel/Heap/kmalloc.cpp
+++ b/Kernel/Heap/kmalloc.cpp
@@ -44,6 +44,7 @@ struct KmallocSubheap {
     }
 
     IntrusiveListNode<KmallocSubheap> list_node;
+    using List = IntrusiveList<&KmallocSubheap::list_node>;
     Heap<CHUNK_SIZE, KMALLOC_SCRUB_BYTE, KFREE_SCRUB_BYTE> allocator;
 };
 
@@ -82,6 +83,7 @@ class KmallocSlabBlock {
     }
 
     IntrusiveListNode<KmallocSlabBlock> list_node;
+    using List = IntrusiveList<&KmallocSlabBlock::list_node>;
 
 private:
     struct FreelistEntry {
@@ -138,8 +140,8 @@ class KmallocSlabheap {
 private:
     size_t m_slab_size { 0 };
 
-    IntrusiveList<&KmallocSlabBlock::list_node> m_usable_blocks;
-    IntrusiveList<&KmallocSlabBlock::list_node> m_full_blocks;
+    KmallocSlabBlock::List m_usable_blocks;
+    KmallocSlabBlock::List m_full_blocks;
 };
 
 struct KmallocGlobalData {
@@ -294,7 +296,7 @@ struct KmallocGlobalData {
     };
     Optional<ExpansionData> expansion_data;
 
-    IntrusiveList<&KmallocSubheap::list_node> subheaps;
+    KmallocSubheap::List subheaps;
 
     KmallocSlabheap slabheaps[6] = { 16, 32, 64, 128, 256, 512 };"
255edcb5253ee88d30b4ac0817160576f16b975c,2020-02-10 18:34:27,William McPherson,piano: Add nice scale factor to WaveWidget,False,Add nice scale factor to WaveWidget,piano,"diff --git a/Applications/Piano/WaveWidget.cpp b/Applications/Piano/WaveWidget.cpp
index 41659ce0e22d..ffdc728d1931 100644
--- a/Applications/Piano/WaveWidget.cpp
+++ b/Applications/Piano/WaveWidget.cpp
@@ -45,6 +45,8 @@ WaveWidget::~WaveWidget()
 
 int WaveWidget::sample_to_y(int sample) const
 {
+    constexpr int nice_scale_factor = 4;
+    sample *= nice_scale_factor;
     constexpr double sample_max = std::numeric_limits<i16>::max();
     double percentage = sample / sample_max;
     double portion_of_half_height = percentage * ((frame_inner_rect().height() - 1) / 2.0);"
c6c59653ce511768789cd25287bd234836bbebc5,2022-01-07 14:09:12,Brian Gianforcaro,ci: Update the `lint commits` error message to be more user friendly,False,Update the `lint commits` error message to be more user friendly,ci,"diff --git a/.github/workflows/lintcommits.yml b/.github/workflows/lintcommits.yml
index 0c5dddda2091..b8c4fbd4451c 100644
--- a/.github/workflows/lintcommits.yml
+++ b/.github/workflows/lintcommits.yml
@@ -77,4 +77,4 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.BUGGIEBOT }}
         with:
-          msg: ""One or more of the commits in this PR do not match the [code submission policy](https://github.com/SerenityOS/serenity/blob/master/CONTRIBUTING.md#code-submission-policy), please check the `lint_commits` CI job for more details.""
+          msg: ""Hello!\n\nOne or more of the commit messages in this PR do not match the SerenityOS [code submission policy](https://github.com/SerenityOS/serenity/blob/master/CONTRIBUTING.md#code-submission-policy), please check the `lint_commits` CI job for more details on which commits were flagged and why.\nPlease do not close this PR and open another, instead modify your commit message(s) with [git commit --amend](https://docs.github.com/en/pull-requests/committing-changes-to-your-project/creating-and-editing-commits/changing-a-commit-message) and force push those changes to update this PR."""
7961e09c2989f8918f04ed04f9f44854bb00625f,2021-02-08 22:33:57,Ben Wiederhake,everywhere: Add semantically-missing includes,False,Add semantically-missing includes,everywhere,"diff --git a/Userland/DevTools/HackStudio/FindInFilesWidget.h b/Userland/DevTools/HackStudio/FindInFilesWidget.h
index 759d1163746e..a18d01131452 100644
--- a/Userland/DevTools/HackStudio/FindInFilesWidget.h
+++ b/Userland/DevTools/HackStudio/FindInFilesWidget.h
@@ -27,6 +27,7 @@
 #pragma once
 
 #include <LibGUI/Button.h>
+#include <LibGUI/TableView.h>
 #include <LibGUI/TextBox.h>
 #include <LibGUI/Widget.h>
 
diff --git a/Userland/Services/WindowServer/Button.h b/Userland/Services/WindowServer/Button.h
index 7a2d6b82e987..e6c043302579 100644
--- a/Userland/Services/WindowServer/Button.h
+++ b/Userland/Services/WindowServer/Button.h
@@ -28,6 +28,7 @@
 
 #include <AK/Function.h>
 #include <AK/Weakable.h>
+#include <LibGfx/Bitmap.h>
 #include <LibGfx/Forward.h>
 #include <LibGfx/Rect.h>
 
diff --git a/Userland/Services/WindowServer/ClientConnection.h b/Userland/Services/WindowServer/ClientConnection.h
index e4048cba7cd8..d988c340ae30 100644
--- a/Userland/Services/WindowServer/ClientConnection.h
+++ b/Userland/Services/WindowServer/ClientConnection.h
@@ -35,6 +35,7 @@
 #include <LibGfx/Bitmap.h>
 #include <LibIPC/ClientConnection.h>
 #include <WindowServer/Event.h>
+#include <WindowServer/Menu.h>
 #include <WindowServer/WindowClientEndpoint.h>
 #include <WindowServer/WindowServerEndpoint.h>
 
diff --git a/Userland/Services/WindowServer/Window.h b/Userland/Services/WindowServer/Window.h
index ed7f4ca9462c..3e8e2b18b3b3 100644
--- a/Userland/Services/WindowServer/Window.h
+++ b/Userland/Services/WindowServer/Window.h
@@ -33,6 +33,7 @@
 #include <LibGfx/Bitmap.h>
 #include <LibGfx/DisjointRectSet.h>
 #include <LibGfx/Rect.h>
+#include <WindowServer/Cursor.h>
 #include <WindowServer/WindowFrame.h>
 #include <WindowServer/WindowType.h>"
05e1b196e9999ccd67c73c877acd786468d167c5,2021-08-23 03:32:09,Andreas Kling,kernel: Make Processor::clean_fpu_state() static,False,Make Processor::clean_fpu_state() static,kernel,"diff --git a/Kernel/Arch/x86/Processor.h b/Kernel/Arch/x86/Processor.h
index eeb304ff18e3..57abb54514cb 100644
--- a/Kernel/Arch/x86/Processor.h
+++ b/Kernel/Arch/x86/Processor.h
@@ -392,10 +392,7 @@ class Processor {
         return read_gs_ptr(__builtin_offsetof(Processor, m_in_critical));
     }
 
-    ALWAYS_INLINE const FPUState& clean_fpu_state() const
-    {
-        return s_clean_fpu_state;
-    }
+    ALWAYS_INLINE static FPUState const& clean_fpu_state() { return s_clean_fpu_state; }
 
     static void smp_enable();
     bool smp_process_pending_messages();
diff --git a/Kernel/Thread.cpp b/Kernel/Thread.cpp
index 31bff2ec58d9..9d5c8c7489d3 100644
--- a/Kernel/Thread.cpp
+++ b/Kernel/Thread.cpp
@@ -1231,7 +1231,7 @@ RefPtr<Thread> Thread::from_tid(ThreadID tid)
 
 void Thread::reset_fpu_state()
 {
-    memcpy(&m_fpu_state, &Processor::current().clean_fpu_state(), sizeof(FPUState));
+    memcpy(&m_fpu_state, &Processor::clean_fpu_state(), sizeof(FPUState));
 }
 
 bool Thread::should_be_stopped() const"
9fc419395ee2bae343ee978ee5036f6eb2edbdfe,2022-03-06 06:08:01,Jelle Raaijmakers,libsoftgpu: Use destination alpha for texture decal function,False,Use destination alpha for texture decal function,libsoftgpu,"diff --git a/Userland/Libraries/LibSoftGPU/Device.cpp b/Userland/Libraries/LibSoftGPU/Device.cpp
index 84940710b71a..5bedeab2c965 100644
--- a/Userland/Libraries/LibSoftGPU/Device.cpp
+++ b/Userland/Libraries/LibSoftGPU/Device.cpp
@@ -1016,10 +1016,10 @@ ALWAYS_INLINE void Device::shade_fragments(PixelQuad& quad)
             quad.out_color = texel;
             break;
         case TextureEnvMode::Decal: {
-            auto src_alpha = quad.out_color.w();
-            quad.out_color.set_x(mix(quad.out_color.x(), texel.x(), src_alpha));
-            quad.out_color.set_y(mix(quad.out_color.y(), texel.y(), src_alpha));
-            quad.out_color.set_z(mix(quad.out_color.z(), texel.z(), src_alpha));
+            auto dst_alpha = texel.w();
+            quad.out_color.set_x(mix(quad.out_color.x(), texel.x(), dst_alpha));
+            quad.out_color.set_y(mix(quad.out_color.y(), texel.y(), dst_alpha));
+            quad.out_color.set_z(mix(quad.out_color.z(), texel.z(), dst_alpha));
             break;
         }
         default:"
ceefe7d858d55f66ea36cb1688820b61a65d2102,2024-12-27 14:32:58,Andreas Kling,libweb: Make CustomElementDefinition relationship with GC more sane,False,Make CustomElementDefinition relationship with GC more sane,libweb,"diff --git a/Libraries/LibWeb/DOM/Element.cpp b/Libraries/LibWeb/DOM/Element.cpp
index 3e723cea0f48..6a4f1f666a1c 100644
--- a/Libraries/LibWeb/DOM/Element.cpp
+++ b/Libraries/LibWeb/DOM/Element.cpp
@@ -2181,7 +2181,7 @@ JS::ThrowCompletionOr<void> Element::upgrade_element(GC::Ref<HTML::CustomElement
     }
 
     // 6. Add element to the end of definition's construction stack.
-    custom_element_definition->construction_stack().append(GC::make_root(this));
+    custom_element_definition->construction_stack().append(GC::Ref { *this });
 
     // 7. Let C be definition's constructor.
     auto& constructor = custom_element_definition->constructor();
diff --git a/Libraries/LibWeb/HTML/CustomElements/CustomElementDefinition.cpp b/Libraries/LibWeb/HTML/CustomElements/CustomElementDefinition.cpp
index 066b2e677602..91b56e2b055c 100644
--- a/Libraries/LibWeb/HTML/CustomElements/CustomElementDefinition.cpp
+++ b/Libraries/LibWeb/HTML/CustomElements/CustomElementDefinition.cpp
@@ -13,6 +13,11 @@ void CustomElementDefinition::visit_edges(Visitor& visitor)
     Base::visit_edges(visitor);
     visitor.visit(m_constructor);
     visitor.visit(m_lifecycle_callbacks);
+    for (auto& entry : m_construction_stack) {
+        entry.visit(
+            [&](GC::Ref<DOM::Element>& element) { visitor.visit(element); },
+            [&](AlreadyConstructedCustomElementMarker&) {});
+    }
 }
 
 }
diff --git a/Libraries/LibWeb/HTML/CustomElements/CustomElementDefinition.h b/Libraries/LibWeb/HTML/CustomElements/CustomElementDefinition.h
index 7af0a4a044cd..23eacd2276ec 100644
--- a/Libraries/LibWeb/HTML/CustomElements/CustomElementDefinition.h
+++ b/Libraries/LibWeb/HTML/CustomElements/CustomElementDefinition.h
@@ -20,10 +20,7 @@ class CustomElementDefinition : public JS::Cell {
     GC_CELL(CustomElementDefinition, JS::Cell);
     GC_DECLARE_ALLOCATOR(CustomElementDefinition);
 
-    using LifecycleCallbacksStorage = OrderedHashMap<FlyString, GC::Ptr<WebIDL::CallbackType>>;
-    using ConstructionStackStorage = Vector<Variant<GC::Root<DOM::Element>, AlreadyConstructedCustomElementMarker>>;
-
-    static GC::Ref<CustomElementDefinition> create(JS::Realm& realm, String const& name, String const& local_name, WebIDL::CallbackType& constructor, Vector<String>&& observed_attributes, LifecycleCallbacksStorage&& lifecycle_callbacks, bool form_associated, bool disable_internals, bool disable_shadow)
+    static GC::Ref<CustomElementDefinition> create(JS::Realm& realm, String const& name, String const& local_name, WebIDL::CallbackType& constructor, Vector<String>&& observed_attributes, OrderedHashMap<FlyString, GC::Root<WebIDL::CallbackType>> lifecycle_callbacks, bool form_associated, bool disable_internals, bool disable_shadow)
     {
         return realm.create<CustomElementDefinition>(name, local_name, constructor, move(observed_attributes), move(lifecycle_callbacks), form_associated, disable_internals, disable_shadow);
     }
@@ -38,26 +35,27 @@ class CustomElementDefinition : public JS::Cell {
 
     Vector<String> const& observed_attributes() const { return m_observed_attributes; }
 
-    LifecycleCallbacksStorage const& lifecycle_callbacks() const { return m_lifecycle_callbacks; }
+    auto const& lifecycle_callbacks() const { return m_lifecycle_callbacks; }
 
-    ConstructionStackStorage& construction_stack() { return m_construction_stack; }
-    ConstructionStackStorage const& construction_stack() const { return m_construction_stack; }
+    auto& construction_stack() { return m_construction_stack; }
+    auto const& construction_stack() const { return m_construction_stack; }
 
     bool form_associated() const { return m_form_associated; }
     bool disable_internals() const { return m_disable_internals; }
     bool disable_shadow() const { return m_disable_shadow; }
 
 private:
-    CustomElementDefinition(String const& name, String const& local_name, WebIDL::CallbackType& constructor, Vector<String>&& observed_attributes, LifecycleCallbacksStorage&& lifecycle_callbacks, bool form_associated, bool disable_internals, bool disable_shadow)
+    CustomElementDefinition(String const& name, String const& local_name, WebIDL::CallbackType& constructor, Vector<String>&& observed_attributes, OrderedHashMap<FlyString, GC::Root<WebIDL::CallbackType>>&& lifecycle_callbacks, bool form_associated, bool disable_internals, bool disable_shadow)
         : m_name(name)
         , m_local_name(local_name)
         , m_constructor(constructor)
         , m_observed_attributes(move(observed_attributes))
-        , m_lifecycle_callbacks(move(lifecycle_callbacks))
         , m_form_associated(form_associated)
         , m_disable_internals(disable_internals)
         , m_disable_shadow(disable_shadow)
     {
+        for (auto& [key, value] : lifecycle_callbacks)
+            m_lifecycle_callbacks.set(key, value.cell());
     }
 
     virtual void visit_edges(Visitor& visitor) override;
@@ -87,13 +85,13 @@ class CustomElementDefinition : public JS::Cell {
     //     ""formAssociatedCallback"", ""formDisabledCallback"", ""formResetCallback"", and ""formStateRestoreCallback"".
     //     The corresponding values are either a Web IDL Function callback function type value, or null.
     //     By default the value of each entry is null.
-    LifecycleCallbacksStorage m_lifecycle_callbacks;
+    OrderedHashMap<FlyString, GC::Ptr<WebIDL::CallbackType>> m_lifecycle_callbacks;
 
     // https://html.spec.whatwg.org/multipage/custom-elements.html#concept-custom-element-definition-construction-stack
     // A construction stack
     //     A list, initially empty, that is manipulated by the upgrade an element algorithm and the HTML element constructors.
     //     Each entry in the list will be either an element or an already constructed marker.
-    ConstructionStackStorage m_construction_stack;
+    Vector<Variant<GC::Ref<DOM::Element>, AlreadyConstructedCustomElementMarker>> m_construction_stack;
 
     // https://html.spec.whatwg.org/multipage/custom-elements.html#concept-custom-element-definition-form-associated
     // A form-associated boolean
diff --git a/Libraries/LibWeb/HTML/CustomElements/CustomElementRegistry.cpp b/Libraries/LibWeb/HTML/CustomElements/CustomElementRegistry.cpp
index 7e84013f2358..c5e0ea656e4d 100644
--- a/Libraries/LibWeb/HTML/CustomElements/CustomElementRegistry.cpp
+++ b/Libraries/LibWeb/HTML/CustomElements/CustomElementRegistry.cpp
@@ -185,7 +185,7 @@ JS::ThrowCompletionOr<void> CustomElementRegistry::define(String const& name, We
 
     // NOTE: This is not in the spec, but is required because of how we catch the exception by using a lambda, meaning we need to define this
     //       variable outside of it to use it later.
-    CustomElementDefinition::LifecycleCallbacksStorage lifecycle_callbacks;
+    OrderedHashMap<FlyString, GC::Root<WebIDL::CallbackType>> lifecycle_callbacks;
 
     // 14. Run the following steps while catching any exceptions:
     auto get_definition_attributes_from_constructor = [&]() -> JS::ThrowCompletionOr<void> {
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
index 33fb846b057d..a9c6c236c970 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/BindingsGenerator/IDLGenerators.cpp
@@ -2635,7 +2635,7 @@ static void generate_html_constructor(SourceGenerator& generator, IDL::Construct
         return JS::throw_completion(WebIDL::InvalidStateError::create(realm, ""Custom element has already been constructed""_string));
 
     // 12. Perform ? element.[[SetPrototypeOf]](prototype).
-    auto actual_element = element.get<GC::Root<DOM::Element>>();
+    auto actual_element = element.get<GC::Ref<DOM::Element>>();
     TRY(actual_element->internal_set_prototype_of(&prototype.as_object()));
 
     // 13. Replace the last entry in definition's construction stack with an already constructed marker."
aa679643c103ac94fa3356ecdbba903793e1b7d1,2022-02-14 23:09:20,Andreas Kling,libgfx: Remove unnecessary includes from PNGLoader.cpp,False,Remove unnecessary includes from PNGLoader.cpp,libgfx,"diff --git a/Userland/Libraries/LibGfx/PNGLoader.cpp b/Userland/Libraries/LibGfx/PNGLoader.cpp
index ca3e0931de7c..4496c668056b 100644
--- a/Userland/Libraries/LibGfx/PNGLoader.cpp
+++ b/Userland/Libraries/LibGfx/PNGLoader.cpp
@@ -9,16 +9,10 @@
 #include <AK/Vector.h>
 #include <LibCompress/Zlib.h>
 #include <LibGfx/PNGLoader.h>
-#include <fcntl.h>
-#include <stdio.h>
 #include <string.h>
-#include <sys/mman.h>
-#include <sys/stat.h>
-#include <unistd.h>
 
 #ifdef __serenity__
 #    include <LibCompress/Deflate.h>
-#    include <serenity.h>
 #endif
 
 namespace Gfx {"
074f771b596d0275c818184f24036ba9d3e3af0a,2022-10-31 19:17:13,Zaggy1024,libvideo: Add VideoFrame class for decoded video frames,False,Add VideoFrame class for decoded video frames,libvideo,"diff --git a/Meta/Lagom/Fuzzers/FuzzVP9Decoder.cpp b/Meta/Lagom/Fuzzers/FuzzVP9Decoder.cpp
index 4827a1f9aa8b..506b8c4ab547 100644
--- a/Meta/Lagom/Fuzzers/FuzzVP9Decoder.cpp
+++ b/Meta/Lagom/Fuzzers/FuzzVP9Decoder.cpp
@@ -10,7 +10,7 @@
 extern ""C"" int LLVMFuzzerTestOneInput(u8 const* data, size_t size)
 {
     Video::VP9::Decoder vp9_decoder;
-    if (auto decode_error = vp9_decoder.decode({ data, size }); decode_error.is_error())
+    if (auto decode_error = vp9_decoder.receive_sample({ data, size }); decode_error.is_error())
         return -1;
     return 0;
 }
diff --git a/Tests/LibVideo/TestVP9Decode.cpp b/Tests/LibVideo/TestVP9Decode.cpp
index 15462b8f1e22..edcb5558901a 100644
--- a/Tests/LibVideo/TestVP9Decode.cpp
+++ b/Tests/LibVideo/TestVP9Decode.cpp
@@ -29,7 +29,7 @@ static void decode_video(StringView path, size_t expected_frame_count)
                 continue;
 
             for (frame_index = 0; frame_index < block.frames().size(); frame_index++) {
-                MUST(vp9_decoder.decode(block.frames()[frame_index]));
+                MUST(vp9_decoder.receive_sample(block.frames()[frame_index]));
                 frame_count++;
             }
         }
diff --git a/Userland/Applications/VideoPlayer/main.cpp b/Userland/Applications/VideoPlayer/main.cpp
index 069b173012d8..5ebe2773976e 100644
--- a/Userland/Applications/VideoPlayer/main.cpp
+++ b/Userland/Applications/VideoPlayer/main.cpp
@@ -75,46 +75,28 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
         if (!optional_sample.has_value())
             return;
 
-        auto result = vp9_decoder.decode(optional_sample.release_value());
+        auto result = vp9_decoder.receive_sample(optional_sample.release_value());
 
         if (result.is_error()) {
             outln(""Error decoding frame {}: {}"", frame_number, result.error().string_literal());
             return;
         }
 
-        // FIXME: This method of output is temporary and should be replaced with an image struct
-        //        containing the planes and their sizes. Ideally, this struct would be interpreted
-        //        by some color conversion library and then passed to something (GL?) for output.
-        auto const& output_y = vp9_decoder.get_output_buffer_for_plane(0);
-        auto const& output_u = vp9_decoder.get_output_buffer_for_plane(1);
-        auto const& output_v = vp9_decoder.get_output_buffer_for_plane(2);
-        auto y_size = vp9_decoder.get_y_plane_size();
-        auto uv_subsampling_y = vp9_decoder.get_uv_subsampling_y();
-        auto uv_subsampling_x = vp9_decoder.get_uv_subsampling_x();
-        Gfx::IntSize uv_size { y_size.width() >> uv_subsampling_x, y_size.height() >> uv_subsampling_y };
-        auto cicp = vp9_decoder.get_cicp_color_space();
-        video_track.color_format.replace_code_points_if_specified(cicp);
-        cicp.default_code_points_if_unspecified(Video::ColorPrimaries::BT709, Video::TransferCharacteristics::BT709, Video::MatrixCoefficients::BT709);
-
-        auto color_converter_result = Video::ColorConverter::create(vp9_decoder.get_bit_depth(), cicp);
-        if (color_converter_result.is_error()) {
-            outln(""Cannot convert video colors: {}"", color_converter_result.release_error().string_literal());
+        auto frame_result = vp9_decoder.get_decoded_frame();
+        if (frame_result.is_error()) {
+            outln(""Error retrieving frame {}: {}"", frame_number, frame_result.error().string_literal());
             return;
         }
-        auto color_converter = color_converter_result.release_value();
-
-        for (auto y_row = 0u; y_row < video_track.pixel_height; y_row++) {
-            auto uv_row = y_row >> uv_subsampling_y;
-
-            for (auto y_column = 0u; y_column < video_track.pixel_width; y_column++) {
-                auto uv_column = y_column >> uv_subsampling_x;
+        auto frame = frame_result.release_value();
 
-                auto y = output_y[y_row * y_size.width() + y_column];
-                auto u = output_u[uv_row * uv_size.width() + uv_column];
-                auto v = output_v[uv_row * uv_size.width() + uv_column];
+        auto& cicp = frame->cicp();
+        video_track.color_format.replace_code_points_if_specified(cicp);
+        cicp.default_code_points_if_unspecified(Video::ColorPrimaries::BT709, Video::TransferCharacteristics::BT709, Video::MatrixCoefficients::BT709);
 
-                image->set_pixel(y_column, y_row, color_converter.convert_yuv_to_full_range_rgb(y, u, v));
-            }
+        auto convert_result = frame->output_to_bitmap(image);
+        if (convert_result.is_error()) {
+            outln(""Error creating bitmap for frame {}: {}"", frame_number, convert_result.error().string_literal());
+            return;
         }
 
         image_widget->set_bitmap(image);
diff --git a/Userland/Libraries/LibVideo/CMakeLists.txt b/Userland/Libraries/LibVideo/CMakeLists.txt
index deffad34beb2..c45c1803b412 100644
--- a/Userland/Libraries/LibVideo/CMakeLists.txt
+++ b/Userland/Libraries/LibVideo/CMakeLists.txt
@@ -3,6 +3,7 @@ set(SOURCES
     Color/ColorPrimaries.cpp
     Color/TransferCharacteristics.cpp
     MatroskaReader.cpp
+    VideoFrame.cpp
     VP9/BitStream.cpp
     VP9/Decoder.cpp
     VP9/Parser.cpp
diff --git a/Userland/Libraries/LibVideo/VP9/Decoder.cpp b/Userland/Libraries/LibVideo/VP9/Decoder.cpp
index 4d8b9fa950c4..b899d3e050dd 100644
--- a/Userland/Libraries/LibVideo/VP9/Decoder.cpp
+++ b/Userland/Libraries/LibVideo/VP9/Decoder.cpp
@@ -19,7 +19,7 @@ Decoder::Decoder()
 {
 }
 
-DecoderErrorOr<void> Decoder::decode(Span<const u8> chunk_data)
+DecoderErrorOr<void> Decoder::receive_sample(Span<u8 const> chunk_data)
 {
     auto superframe_sizes = m_parser->parse_superframe_sizes(chunk_data);
 
@@ -42,9 +42,9 @@ DecoderErrorOr<void> Decoder::decode(Span<const u8> chunk_data)
     return {};
 }
 
-DecoderErrorOr<void> Decoder::decode(ByteBuffer const& chunk_data)
+DecoderErrorOr<void> Decoder::receive_sample(ByteBuffer const& chunk_data)
 {
-    return decode(chunk_data.span());
+    return receive_sample(chunk_data.span());
 }
 
 void Decoder::dump_frame_info()
@@ -57,7 +57,7 @@ inline size_t index_from_row_and_column(u32 row, u32 column, u32 stride)
     return row * stride + column;
 }
 
-DecoderErrorOr<void> Decoder::decode_frame(Span<const u8> frame_data)
+DecoderErrorOr<void> Decoder::decode_frame(Span<u8 const> frame_data)
 {
     // 1. The syntax elements for the coded frame are extracted as specified in sections 6 and 7. The syntax
     // tables include function calls indicating when the block decode processes should be triggered.
@@ -130,27 +130,7 @@ Vector<u16>& Decoder::get_output_buffer(u8 plane)
     return m_buffers.output[plane];
 }
 
-Vector<u16> const& Decoder::get_output_buffer_for_plane(u8 plane) const
-{
-    return m_buffers.output[plane];
-}
-
-Gfx::Size<size_t> Decoder::get_y_plane_size()
-{
-    return m_parser->get_decoded_size_for_plane(0);
-}
-
-bool Decoder::get_uv_subsampling_y()
-{
-    return m_parser->m_subsampling_y;
-}
-
-bool Decoder::get_uv_subsampling_x()
-{
-    return m_parser->m_subsampling_x;
-}
-
-CodingIndependentCodePoints Decoder::get_cicp_color_space()
+inline CodingIndependentCodePoints Decoder::get_cicp_color_space()
 {
     ColorPrimaries color_primaries;
     TransferCharacteristics transfer_characteristics;
@@ -209,9 +189,42 @@ CodingIndependentCodePoints Decoder::get_cicp_color_space()
     return { color_primaries, transfer_characteristics, matrix_coefficients, m_parser->m_color_range };
 }
 
-u8 Decoder::get_bit_depth()
+DecoderErrorOr<NonnullOwnPtr<VideoFrame>> Decoder::get_decoded_frame()
 {
-    return m_parser->m_bit_depth;
+    size_t decoded_y_width = m_parser->m_mi_cols * 8;
+    Gfx::Size<size_t> output_y_size = {
+        m_parser->m_frame_width,
+        m_parser->m_frame_height,
+    };
+    auto decoded_uv_width = decoded_y_width >> m_parser->m_subsampling_x;
+    Gfx::Size<size_t> output_uv_size = {
+        output_y_size.width() >> m_parser->m_subsampling_x,
+        output_y_size.height() >> m_parser->m_subsampling_y,
+    };
+    Array<FixedArray<u16>, 3> output_buffers = {
+        DECODER_TRY_ALLOC(FixedArray<u16>::try_create(output_y_size.width() * output_y_size.height())),
+        DECODER_TRY_ALLOC(FixedArray<u16>::try_create(output_uv_size.width() * output_uv_size.height())),
+        DECODER_TRY_ALLOC(FixedArray<u16>::try_create(output_uv_size.width() * output_uv_size.height())),
+    };
+    for (u8 plane = 0; plane < 3; plane++) {
+        auto& buffer = output_buffers[plane];
+        auto decoded_width = plane == 0 ? decoded_y_width : decoded_uv_width;
+        auto output_size = plane == 0 ? output_y_size : output_uv_size;
+        auto const& decoded_buffer = get_output_buffer(plane);
+
+        for (u32 row = 0; row < output_size.height(); row++) {
+            memcpy(
+                buffer.data() + row * output_size.width(),
+                decoded_buffer.data() + row * decoded_width,
+                output_size.width() * sizeof(*buffer.data()));
+        }
+    }
+
+    return DECODER_TRY_ALLOC(adopt_nonnull_own_or_enomem(new (nothrow) SubsampledYUVFrame(
+        { output_y_size.width(), output_y_size.height() },
+        m_parser->m_bit_depth, get_cicp_color_space(),
+        m_parser->m_subsampling_x, m_parser->m_subsampling_y,
+        output_buffers[0], output_buffers[1], output_buffers[2])));
 }
 
 u8 Decoder::merge_prob(u8 pre_prob, u8 count_0, u8 count_1, u8 count_sat, u8 max_update_factor)
diff --git a/Userland/Libraries/LibVideo/VP9/Decoder.h b/Userland/Libraries/LibVideo/VP9/Decoder.h
index 50b31716a8a7..bde1dd671f06 100644
--- a/Userland/Libraries/LibVideo/VP9/Decoder.h
+++ b/Userland/Libraries/LibVideo/VP9/Decoder.h
@@ -9,9 +9,11 @@
 
 #include <AK/ByteBuffer.h>
 #include <AK/Error.h>
+#include <AK/NonnullOwnPtr.h>
 #include <AK/Span.h>
 #include <LibVideo/Color/CodingIndependentCodePoints.h>
 #include <LibVideo/DecoderError.h>
+#include <LibVideo/VideoFrame.h>
 
 #include ""Parser.h""
 
@@ -23,23 +25,16 @@ class Decoder {
 public:
     Decoder();
     /* (8.1) General */
-    DecoderErrorOr<void> decode(Span<const u8>);
-    DecoderErrorOr<void> decode(ByteBuffer const&);
+    DecoderErrorOr<void> receive_sample(Span<u8 const>);
+    DecoderErrorOr<void> receive_sample(ByteBuffer const&);
     void dump_frame_info();
 
-    // FIXME: These functions should be replaced by a struct that contains
-    //        all the information needed to display a frame.
-    Vector<u16> const& get_output_buffer_for_plane(u8 plane) const;
-    Gfx::Size<size_t> get_y_plane_size();
-    bool get_uv_subsampling_y();
-    bool get_uv_subsampling_x();
-    CodingIndependentCodePoints get_cicp_color_space();
-    u8 get_bit_depth();
+    DecoderErrorOr<NonnullOwnPtr<VideoFrame>> get_decoded_frame();
 
 private:
     typedef i32 Intermediate;
 
-    DecoderErrorOr<void> decode_frame(Span<const u8>);
+    DecoderErrorOr<void> decode_frame(Span<u8 const>);
 
     DecoderErrorOr<void> allocate_buffers();
     Vector<Intermediate>& get_temp_buffer(u8 plane);
@@ -139,6 +134,8 @@ class Decoder {
     /* (8.10) Reference Frame Update Process */
     DecoderErrorOr<void> update_reference_frames();
 
+    inline CodingIndependentCodePoints get_cicp_color_space();
+
     NonnullOwnPtr<Parser> m_parser;
 
     struct {
diff --git a/Userland/Libraries/LibVideo/VideoFrame.cpp b/Userland/Libraries/LibVideo/VideoFrame.cpp
new file mode 100644
index 000000000000..1eef94d8d77f
--- /dev/null
+++ b/Userland/Libraries/LibVideo/VideoFrame.cpp
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2022, Gregory Bertilson <zaggy1024@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <AK/Format.h>
+#include <AK/NonnullOwnPtr.h>
+#include <AK/OwnPtr.h>
+#include <LibVideo/Color/ColorConverter.h>
+
+#include ""VideoFrame.h""
+
+namespace Video {
+
+ErrorOr<NonnullOwnPtr<SubsampledYUVFrame>> SubsampledYUVFrame::try_create(
+    Gfx::IntSize size,
+    u8 bit_depth, CodingIndependentCodePoints cicp,
+    bool subsampling_horizontal, bool subsampling_vertical,
+    Span<u16> plane_y, Span<u16> plane_u, Span<u16> plane_v)
+{
+    auto plane_y_array = TRY(FixedArray<u16>::try_create(plane_y));
+    auto plane_u_array = TRY(FixedArray<u16>::try_create(plane_u));
+    auto plane_v_array = TRY(FixedArray<u16>::try_create(plane_v));
+    return adopt_nonnull_own_or_enomem(new (nothrow) SubsampledYUVFrame(size, bit_depth, cicp, subsampling_horizontal, subsampling_vertical, plane_y_array, plane_u_array, plane_v_array));
+}
+
+DecoderErrorOr<void> SubsampledYUVFrame::output_to_bitmap(Gfx::Bitmap& bitmap)
+{
+    size_t width = this->width();
+    size_t height = this->height();
+    auto u_sample_row = DECODER_TRY_ALLOC(FixedArray<u16>::try_create(width));
+    auto v_sample_row = DECODER_TRY_ALLOC(FixedArray<u16>::try_create(width));
+    size_t uv_width = width >> m_subsampling_horizontal;
+
+    auto converter = TRY(ColorConverter::create(bit_depth(), cicp()));
+
+    for (size_t row = 0; row < height; row++) {
+        auto uv_row = row >> m_subsampling_vertical;
+
+        // Linearly interpolate the UV samples vertically first.
+        // This will write all UV samples that are located on the Y sample as well,
+        // so we only need to interpolate horizontally between UV samples in the next
+        // step.
+        if ((row & m_subsampling_vertical) == 0 || row == height - 1) {
+            for (size_t uv_column = 0; uv_column < uv_width; uv_column++) {
+                size_t column = uv_column << m_subsampling_horizontal;
+                size_t index = uv_row * uv_width + uv_column;
+                u_sample_row[column] = m_plane_u[index];
+                v_sample_row[column] = m_plane_v[index];
+            }
+        } else {
+            for (size_t uv_column = 0; uv_column < uv_width; uv_column++) {
+                size_t column = uv_column << m_subsampling_horizontal;
+                size_t index = (uv_row + 1) * uv_width + uv_column;
+                u_sample_row[column] = (u_sample_row[column] + m_plane_u[index]) >> 1;
+                v_sample_row[column] = (v_sample_row[column] + m_plane_v[index]) >> 1;
+            }
+        }
+        // Fill in the last pixel of the row which may not be applied by the above
+        // loops if the last pixel in each row is on an uneven index.
+        if ((width & 1) == 0) {
+            u_sample_row[width - 1] = u_sample_row[width - 2];
+            v_sample_row[width - 1] = v_sample_row[width - 2];
+        }
+
+        // Interpolate the samples horizontally.
+        if (m_subsampling_horizontal) {
+            for (size_t column = 1; column < width - 1; column += 2) {
+                u_sample_row[column] = (u_sample_row[column - 1] + u_sample_row[column + 1]) >> 1;
+                v_sample_row[column] = (v_sample_row[column - 1] + v_sample_row[column + 1]) >> 1;
+            }
+        }
+
+        for (size_t column = 0; column < width; column++) {
+            auto y_sample = m_plane_y[row * width + column];
+            auto u_sample = u_sample_row[column];
+            auto v_sample = v_sample_row[column];
+
+            bitmap.set_pixel(Gfx::IntPoint(column, row), converter.convert_yuv_to_full_range_rgb(y_sample, u_sample, v_sample));
+
+            /*auto r_float = clamp(y_sample + (v_sample - 128) * 219.0f / 224.0f * 1.5748f, 0, 255);
+            auto g_float = clamp(y_sample + (u_sample - 128) * 219.0f / 224.0f * -0.0722f * 1.8556f / 0.7152f + (v_sample - 128) * 219.0f / 224.0f * -0.2126f * 1.5748f / 0.7152f, 0, 255);
+            auto b_float = clamp(y_sample + (u_sample - 128) * 219.0f / 224.0f * 1.8556f, 0, 255);
+            auto r = static_cast<u8>(r_float);
+            auto g = static_cast<u8>(g_float);
+            auto b = static_cast<u8>(b_float);
+            bitmap.set_pixel(Gfx::IntPoint(column, row), Color(r, g, b));*/
+        }
+    }
+
+    return {};
+}
+
+}
diff --git a/Userland/Libraries/LibVideo/VideoFrame.h b/Userland/Libraries/LibVideo/VideoFrame.h
new file mode 100644
index 000000000000..049d88a1218e
--- /dev/null
+++ b/Userland/Libraries/LibVideo/VideoFrame.h
@@ -0,0 +1,86 @@
+/*
+ * Copyright (c) 2022, Gregory Bertilson <zaggy1024@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/ByteBuffer.h>
+#include <AK/Concepts.h>
+#include <AK/FixedArray.h>
+#include <LibGfx/Bitmap.h>
+#include <LibGfx/Size.h>
+#include <LibVideo/Color/CodingIndependentCodePoints.h>
+#include <LibVideo/DecoderError.h>
+
+namespace Video {
+
+class VideoFrame {
+
+public:
+    virtual ~VideoFrame() { }
+
+    virtual DecoderErrorOr<void> output_to_bitmap(Gfx::Bitmap& bitmap) = 0;
+    virtual DecoderErrorOr<NonnullRefPtr<Gfx::Bitmap>> to_bitmap()
+    {
+        auto bitmap = DECODER_TRY_ALLOC(Gfx::Bitmap::try_create(Gfx::BitmapFormat::BGRx8888, m_size));
+        TRY(output_to_bitmap(bitmap));
+        return bitmap;
+    }
+
+    inline Gfx::IntSize size() { return m_size; }
+    inline size_t width() { return size().width(); }
+    inline size_t height() { return size().height(); }
+
+    inline u8 bit_depth() { return m_bit_depth; }
+    inline CodingIndependentCodePoints& cicp() { return m_cicp; }
+
+protected:
+    VideoFrame(Gfx::IntSize size,
+        u8 bit_depth, CodingIndependentCodePoints cicp)
+        : m_size(size)
+        , m_bit_depth(bit_depth)
+        , m_cicp(cicp)
+    {
+    }
+
+    Gfx::IntSize m_size;
+    u8 m_bit_depth;
+    CodingIndependentCodePoints m_cicp;
+};
+
+class SubsampledYUVFrame : public VideoFrame {
+
+public:
+    static ErrorOr<NonnullOwnPtr<SubsampledYUVFrame>> try_create(
+        Gfx::IntSize size,
+        u8 bit_depth, CodingIndependentCodePoints cicp,
+        bool subsampling_horizontal, bool subsampling_vertical,
+        Span<u16> plane_y, Span<u16> plane_u, Span<u16> plane_v);
+
+    SubsampledYUVFrame(
+        Gfx::IntSize size,
+        u8 bit_depth, CodingIndependentCodePoints cicp,
+        bool subsampling_horizontal, bool subsampling_vertical,
+        FixedArray<u16>& plane_y, FixedArray<u16>& plane_u, FixedArray<u16>& plane_v)
+        : VideoFrame(size, bit_depth, cicp)
+        , m_subsampling_horizontal(subsampling_horizontal)
+        , m_subsampling_vertical(subsampling_vertical)
+        , m_plane_y(move(plane_y))
+        , m_plane_u(move(plane_u))
+        , m_plane_v(move(plane_v))
+    {
+    }
+
+    DecoderErrorOr<void> output_to_bitmap(Gfx::Bitmap& bitmap) override;
+
+protected:
+    bool m_subsampling_horizontal;
+    bool m_subsampling_vertical;
+    FixedArray<u16> m_plane_y;
+    FixedArray<u16> m_plane_u;
+    FixedArray<u16> m_plane_v;
+};
+
+}"
c37dc4ae73a5f75a13c313bf888be5bfdc832d0b,2020-08-12 00:43:18,Andreas Kling,libc: Add sa_family_t and in_port_t types,False,Add sa_family_t and in_port_t types,libc,"diff --git a/Libraries/LibC/netinet/in.h b/Libraries/LibC/netinet/in.h
index ca89ac729d20..71802d633e6c 100644
--- a/Libraries/LibC/netinet/in.h
+++ b/Libraries/LibC/netinet/in.h
@@ -28,6 +28,7 @@
 
 #include <bits/stdint.h>
 #include <sys/cdefs.h>
+#include <sys/socket.h>
 
 __BEGIN_DECLS
 
@@ -43,13 +44,15 @@ in_addr_t inet_addr(const char*);
 #define IPPORT_RESERVED 1024
 #define IPPORT_USERRESERVED 5000
 
+typedef uint16_t in_port_t;
+
 struct in_addr {
     uint32_t s_addr;
 };
 
 struct sockaddr_in {
-    uint16_t sin_family;
-    uint16_t sin_port;
+    sa_family_t sin_family;
+    in_port_t sin_port;
     struct in_addr sin_addr;
     char sin_zero[8];
 };
@@ -59,8 +62,8 @@ struct in6_addr {
 };
 
 struct sockaddr_in6 {
-    uint16_t sin6_family;      // AF_INET6.
-    uint16_t sin6_port;        // Port number.
+    sa_family_t sin6_family;   // AF_INET6.
+    in_port_t sin6_port;       // Port number.
     uint32_t sin6_flowinfo;    // IPv6 traffic class and flow information.
     struct in6_addr sin6_addr; // IPv6 address.
     uint32_t sin6_scope_id;    // Set of interfaces for a scop
diff --git a/Libraries/LibC/sys/socket.h b/Libraries/LibC/sys/socket.h
index ba561b41f086..bdcaf713e2bc 100644
--- a/Libraries/LibC/sys/socket.h
+++ b/Libraries/LibC/sys/socket.h
@@ -63,8 +63,10 @@ __BEGIN_DECLS
 
 #define MSG_DONTWAIT 0x40
 
+typedef uint16_t sa_family_t;
+
 struct sockaddr {
-    uint16_t sa_family;
+    sa_family_t sa_family;
     char sa_data[14];
 };"
72f8b3d18546bdd87deb06d203f50a129be93741,2020-07-07 02:11:35,Nico Weber,"libline: Extract lambdas for cursor-left, cursor-right, delete",False,"Extract lambdas for cursor-left, cursor-right, delete",libline,"diff --git a/Libraries/LibLine/Editor.cpp b/Libraries/LibLine/Editor.cpp
index 8f357b8b2bda..5c96192d6f42 100644
--- a/Libraries/LibLine/Editor.cpp
+++ b/Libraries/LibLine/Editor.cpp
@@ -429,6 +429,69 @@ void Editor::handle_read_event()
     Utf8View input_view { StringView { m_incomplete_data.data(), valid_bytes } };
     size_t consumed_codepoints = 0;
 
+    enum Amount { Character, Word };
+    auto do_cursor_left = [&](Amount amount) {
+	if (m_cursor == 0)
+            return;
+	if (amount == Word) {
+	    auto skipped_at_least_one_character = false;
+	    for (;;) {
+		if (m_cursor == 0)
+		    break;
+		if (skipped_at_least_one_character && isspace(m_buffer[m_cursor - 1])) // stop *after* a space, but only if it changes the position
+		    break;
+		skipped_at_least_one_character = true;
+		--m_cursor;
+	    }
+	} else {
+	    --m_cursor;
+	}
+    };
+    auto do_cursor_right = [&](Amount amount) {
+	if (m_cursor >= m_buffer.size())
+            return;
+	if (amount == Word) {
+	    // Temporarily put a space at the end of our buffer,
+	    // doing this greatly simplifies the logic below.
+	    m_buffer.append(' ');
+	    for (;;) {
+		if (m_cursor >= m_buffer.size())
+		    break;
+		if (isspace(m_buffer[++m_cursor]))
+		    break;
+	    }
+	    m_buffer.take_last();
+	} else {
+	    ++m_cursor;
+	}
+    };
+
+    auto do_backspace = [&] {
+        if (m_is_searching) {
+            return;
+        }
+        if (m_cursor == 0) {
+            fputc('\a', stdout);
+            fflush(stdout);
+            return;
+        }
+        remove_at_index(m_cursor - 1);
+        --m_cursor;
+        m_inline_search_cursor = m_cursor;
+        // We will have to redraw :(
+        m_refresh_needed = true;
+    };
+
+    auto do_delete = [&] {
+        if (m_cursor == m_buffer.size()) {
+            fputc('\a', stdout);
+            fflush(stdout);
+            return;
+        }
+        remove_at_index(m_cursor);
+        m_refresh_needed = true;
+    };
+
     for (auto codepoint : input_view) {
         if (m_finish)
             break;
@@ -495,42 +558,13 @@ void Editor::handle_read_event()
                 continue;
             }
             case 'D': // left
-                if (m_cursor > 0) {
-                    if (ctrl_held) {
-                        auto skipped_at_least_one_character = false;
-                        for (;;) {
-                            if (m_cursor == 0)
-                                break;
-                            if (skipped_at_least_one_character && isspace(m_buffer[m_cursor - 1])) // stop *after* a space, but only if it changes the position
-                                break;
-                            skipped_at_least_one_character = true;
-                            --m_cursor;
-                        }
-                    } else {
-                        --m_cursor;
-                    }
-                }
+		do_cursor_left(ctrl_held ? Word : Character);
                 m_inline_search_cursor = m_cursor;
                 m_state = InputState::Free;
                 ctrl_held = false;
                 continue;
             case 'C': // right
-                if (m_cursor < m_buffer.size()) {
-                    if (ctrl_held) {
-                        // Temporarily put a space at the end of our buffer,
-                        // doing this greatly simplifies the logic below.
-                        m_buffer.append(' ');
-                        for (;;) {
-                            if (m_cursor >= m_buffer.size())
-                                break;
-                            if (isspace(m_buffer[++m_cursor]))
-                                break;
-                        }
-                        m_buffer.take_last();
-                    } else {
-                        ++m_cursor;
-                    }
-                }
+		do_cursor_right(ctrl_held ? Word : Character);
                 m_inline_search_cursor = m_cursor;
                 m_search_offset = 0;
                 m_state = InputState::Free;
@@ -556,13 +590,7 @@ void Editor::handle_read_event()
                 ctrl_held = false;
                 break;
             case '3':
-                if (m_cursor == m_buffer.size()) {
-                    fputc('\a', stdout);
-                    fflush(stdout);
-                    continue;
-                }
-                remove_at_index(m_cursor);
-                m_refresh_needed = true;
+                do_delete();
                 m_search_offset = 0;
                 m_state = InputState::ExpectTerminator;
                 ctrl_held = false;
@@ -709,22 +737,6 @@ void Editor::handle_read_event()
         }
         m_times_tab_pressed = 0; // Safe to say if we get here, the user didn't press TAB
 
-        auto do_backspace = [&] {
-            if (m_is_searching) {
-                return;
-            }
-            if (m_cursor == 0) {
-                fputc('\a', stdout);
-                fflush(stdout);
-                return;
-            }
-            remove_at_index(m_cursor - 1);
-            --m_cursor;
-            m_inline_search_cursor = m_cursor;
-            // We will have to redraw :(
-            m_refresh_needed = true;
-        };
-
         if (codepoint == '\b' || codepoint == m_termios.c_cc[VERASE]) {
             do_backspace();
             continue;"
23d0c3494fa91516420b6cd826176192ef41bd89,2021-07-16 05:37:01,Linus Groh,libjs: Implement Temporal.Duration.prototype.weeks,False,Implement Temporal.Duration.prototype.weeks,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h b/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h
index e9849b95651b..2458c93aeae1 100644
--- a/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h
+++ b/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h
@@ -353,6 +353,7 @@ namespace JS {
     P(valueOf)                               \
     P(values)                                \
     P(warn)                                  \
+    P(weeks)                                 \
     P(writable)                              \
     P(years)
 
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/DurationPrototype.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/DurationPrototype.cpp
index 41347fec09fb..0f451a026d8e 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/DurationPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/DurationPrototype.cpp
@@ -27,6 +27,7 @@ void DurationPrototype::initialize(GlobalObject& global_object)
 
     define_native_accessor(vm.names.years, years_getter, {}, Attribute::Configurable);
     define_native_accessor(vm.names.months, months_getter, {}, Attribute::Configurable);
+    define_native_accessor(vm.names.weeks, weeks_getter, {}, Attribute::Configurable);
 }
 
 static Duration* typed_this(GlobalObject& global_object)
@@ -68,4 +69,17 @@ JS_DEFINE_NATIVE_FUNCTION(DurationPrototype::months_getter)
     return Value(duration->months());
 }
 
+// 7.3.5 get Temporal.Duration.prototype.weeks, https://tc39.es/proposal-temporal/#sec-get-temporal.duration.prototype.weeks
+JS_DEFINE_NATIVE_FUNCTION(DurationPrototype::weeks_getter)
+{
+    // 1. Let duration be the this value.
+    // 2. Perform ? RequireInternalSlot(duration, [[InitializedTemporalDuration]]).
+    auto* duration = typed_this(global_object);
+    if (vm.exception())
+        return {};
+
+    // 3. Return duration.[[Weeks]].
+    return Value(duration->weeks());
+}
+
 }
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/DurationPrototype.h b/Userland/Libraries/LibJS/Runtime/Temporal/DurationPrototype.h
index 04f367d87bca..4c3561f7d018 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/DurationPrototype.h
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/DurationPrototype.h
@@ -21,6 +21,7 @@ class DurationPrototype final : public Object {
 private:
     JS_DECLARE_NATIVE_FUNCTION(years_getter);
     JS_DECLARE_NATIVE_FUNCTION(months_getter);
+    JS_DECLARE_NATIVE_FUNCTION(weeks_getter);
 };
 
 }
diff --git a/Userland/Libraries/LibJS/Tests/builtins/Temporal/Duration/Duration.prototype.weeks.js b/Userland/Libraries/LibJS/Tests/builtins/Temporal/Duration/Duration.prototype.weeks.js
new file mode 100644
index 000000000000..c75b84018b85
--- /dev/null
+++ b/Userland/Libraries/LibJS/Tests/builtins/Temporal/Duration/Duration.prototype.weeks.js
@@ -0,0 +1,14 @@
+describe(""correct behavior"", () => {
+    test(""basic functionality"", () => {
+        const duration = new Temporal.Duration(0, 0, 123);
+        expect(duration.weeks).toBe(123);
+    });
+});
+
+test(""errors"", () => {
+    test(""this value must be a Temporal.Duration object"", () => {
+        expect(() => {
+            Reflect.get(Temporal.Duration.prototype, ""weeks"", ""foo"");
+        }).toThrowWithMessage(TypeError, ""Not a Temporal.Duration"");
+    });
+});"
b895a135d50e9595c9892973b31557e88407febe,2024-11-15 23:21:15,Jelle Raaijmakers,libweb: Update spec implementation for SubtleCrypto.deriveKey(),False,Update spec implementation for SubtleCrypto.deriveKey(),libweb,"diff --git a/Libraries/LibWeb/Crypto/SubtleCrypto.cpp b/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
index e83bcf443372..7f1e1a677601 100644
--- a/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
+++ b/Libraries/LibWeb/Crypto/SubtleCrypto.cpp
@@ -1,6 +1,7 @@
 /*
  * Copyright (c) 2021-2022, Linus Groh <linusg@serenityos.org>
  * Copyright (c) 2023-2024, stelar7 <dudedbz@gmail.com>
+ * Copyright (c) 2024, Jelle Raaijmakers <jelle@ladybird.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
@@ -8,7 +9,6 @@
 #include <AK/QuickSort.h>
 #include <LibCrypto/Hash/HashManager.h>
 #include <LibJS/Runtime/ArrayBuffer.h>
-#include <LibJS/Runtime/Promise.h>
 #include <LibWeb/Bindings/ExceptionOrUtils.h>
 #include <LibWeb/Bindings/Intrinsics.h>
 #include <LibWeb/Bindings/SubtleCryptoPrototype.h>
@@ -664,7 +664,7 @@ JS::ThrowCompletionOr<GC::Ref<WebIDL::Promise>> SubtleCrypto::derive_key(Algorit
     auto promise = WebIDL::create_promise(realm);
 
     // 9. Return promise and perform the remaining steps in parallel.
-    Platform::EventLoopPlugin::the().deferred_invoke(GC::create_function(realm.heap(), [&realm, &vm, normalized_algorithm = normalized_algorithm.release_value(), promise, normalized_derived_key_algorithm_import = normalized_derived_key_algorithm_import.release_value(), normalized_derived_key_algorithm_length = normalized_derived_key_algorithm_length.release_value(), base_key = move(base_key), extractable, key_usages = move(key_usages)]() -> void {
+    Platform::EventLoopPlugin::the().deferred_invoke(GC::create_function(realm.heap(), [&realm, &vm, normalized_algorithm = normalized_algorithm.release_value(), promise, normalized_derived_key_algorithm_import = normalized_derived_key_algorithm_import.release_value(), normalized_derived_key_algorithm_length = normalized_derived_key_algorithm_length.release_value(), base_key = move(base_key), extractable, key_usages = move(key_usages)]() mutable -> void {
         HTML::TemporaryExecutionContext context(realm, HTML::TemporaryExecutionContext::CallbacksEnabled::Yes);
         // 10. If the following steps or referenced procedures say to throw an error, reject promise with the returned error and then terminate the algorithm.
 
@@ -707,25 +707,28 @@ JS::ThrowCompletionOr<GC::Ref<WebIDL::Promise>> SubtleCrypto::derive_key(Algorit
         }
 
         // 15. Let result be the result of performing the import key operation specified by normalizedDerivedKeyAlgorithmImport using ""raw"" as format, secret as keyData, derivedKeyType as algorithm and using extractable and usages.
-        auto result = normalized_derived_key_algorithm_import.methods->import_key(*normalized_derived_key_algorithm_import.parameter, Bindings::KeyFormat::Raw, secret.release_value()->buffer(), extractable, key_usages);
-        if (result.is_error()) {
-            WebIDL::reject_promise(realm, promise, Bindings::dom_exception_to_throw_completion(realm.vm(), result.release_error()).release_value().value());
+        auto result_or_error = normalized_derived_key_algorithm_import.methods->import_key(*normalized_derived_key_algorithm_import.parameter, Bindings::KeyFormat::Raw, secret.release_value()->buffer(), extractable, key_usages);
+        if (result_or_error.is_error()) {
+            WebIDL::reject_promise(realm, promise, Bindings::dom_exception_to_throw_completion(realm.vm(), result_or_error.release_error()).release_value().value());
             return;
         }
+        auto result = result_or_error.release_value();
 
         // 16. If the [[type]] internal slot of result is ""secret"" or ""private"" and usages is empty, then throw a SyntaxError.
-        if ((result.release_value()->type() == Bindings::KeyType::Secret || result.release_value()->type() == Bindings::KeyType::Private) && key_usages.is_empty()) {
+        if ((result->type() == Bindings::KeyType::Secret || result->type() == Bindings::KeyType::Private) && key_usages.is_empty()) {
             WebIDL::reject_promise(realm, promise, WebIDL::SyntaxError::create(realm, ""usages must not be empty""_string));
             return;
         }
 
-        // AD-HOC: Set the [[extractable]] internal slot of key to be extractable.
-        //         See: https://github.com/w3c/webcrypto/issues/383
-        auto key = result.release_value();
-        key->set_extractable(extractable);
+        // 17. Set the [[extractable]] internal slot of result to extractable.
+        result->set_extractable(extractable);
 
-        // 17. Resolve promise with result.
-        WebIDL::resolve_promise(realm, promise, key);
+        // 18. Set the [[usages]] internal slot of result to the normalized value of usages.
+        normalize_key_usages(key_usages);
+        result->set_usages(key_usages);
+
+        // 19. Resolve promise with result.
+        WebIDL::resolve_promise(realm, promise, result);
     }));
 
     return promise;"
d796f609dbff0897796a91dcd5f8467496db8dc9,2024-11-12 15:17:51,dependabot[bot],ci: Bump JamesIves/github-pages-deploy-action from 4.6.8 to 4.6.9,False,Bump JamesIves/github-pages-deploy-action from 4.6.8 to 4.6.9,ci,"diff --git a/.github/workflows/libjs-test262.yml b/.github/workflows/libjs-test262.yml
index a62422bb2e65..888d310c8fe8 100644
--- a/.github/workflows/libjs-test262.yml
+++ b/.github/workflows/libjs-test262.yml
@@ -146,7 +146,7 @@ jobs:
         run: ./libjs-test262/per_file_result_diff.py -o old-libjs-data/wasm/per-file-master.json -n libjs-data/wasm/per-file-master.json
 
       - name: Deploy to GitHub
-        uses: JamesIves/github-pages-deploy-action@v4.6.8
+        uses: JamesIves/github-pages-deploy-action@v4.6.9
         with:
           git-config-name: LadybirdBot
           git-config-email: ladybirdbot@ladybird.org"
a1a59ec3abe87dd537c88b53a8260fb70192920c,2024-06-05 19:07:05,Andreas Kling,libgfx: Remove unused Painter::draw_text() overloads,False,Remove unused Painter::draw_text() overloads,libgfx,"diff --git a/Userland/Libraries/LibGfx/Painter.cpp b/Userland/Libraries/LibGfx/Painter.cpp
index f8a1e661519c..b569cabde324 100644
--- a/Userland/Libraries/LibGfx/Painter.cpp
+++ b/Userland/Libraries/LibGfx/Painter.cpp
@@ -1172,36 +1172,11 @@ void Painter::draw_text(FloatRect const& rect, StringView raw_text, Font const&
     });
 }
 
-void Painter::draw_text(Function<void(FloatRect const&, Utf8CodePointIterator&)> draw_one_glyph, FloatRect const& rect, Utf8View const& text, Font const& font, TextAlignment alignment, TextElision elision, TextWrapping wrapping)
-{
-    do_draw_text(rect, text, font, alignment, elision, wrapping, [&](FloatRect const& r, Utf8CodePointIterator& it) {
-        draw_one_glyph(r, it);
-    });
-}
-
-void Painter::draw_text(Function<void(FloatRect const&, Utf8CodePointIterator&)> draw_one_glyph, FloatRect const& rect, StringView raw_text, Font const& font, TextAlignment alignment, TextElision elision, TextWrapping wrapping)
-{
-    Utf8View text { raw_text };
-    do_draw_text(rect, text, font, alignment, elision, wrapping, [&](FloatRect const& r, Utf8CodePointIterator& it) {
-        draw_one_glyph(r, it);
-    });
-}
-
 void Painter::draw_text(IntRect const& rect, StringView raw_text, Font const& font, TextAlignment alignment, Color color, TextElision elision, TextWrapping wrapping)
 {
     draw_text(rect.to_type<float>(), raw_text, font, alignment, color, elision, wrapping);
 }
 
-void Painter::draw_text(Function<void(FloatRect const&, Utf8CodePointIterator&)> draw_one_glyph, IntRect const& rect, Utf8View const& text, Font const& font, TextAlignment alignment, TextElision elision, TextWrapping wrapping)
-{
-    return draw_text(move(draw_one_glyph), rect.to_type<float>(), text, font, alignment, elision, wrapping);
-}
-
-void Painter::draw_text(Function<void(FloatRect const&, Utf8CodePointIterator&)> draw_one_glyph, IntRect const& rect, StringView raw_text, Font const& font, TextAlignment alignment, TextElision elision, TextWrapping wrapping)
-{
-    return draw_text(move(draw_one_glyph), rect.to_type<float>(), raw_text, font, alignment, elision, wrapping);
-}
-
 void Painter::set_pixel(IntPoint p, Color color, bool blend)
 {
     auto point = p;
diff --git a/Userland/Libraries/LibGfx/Painter.h b/Userland/Libraries/LibGfx/Painter.h
index 091a79c780e3..338736fa90ee 100644
--- a/Userland/Libraries/LibGfx/Painter.h
+++ b/Userland/Libraries/LibGfx/Painter.h
@@ -72,11 +72,7 @@ class Painter {
     void blit(IntPoint, Gfx::Bitmap const&, IntRect const& src_rect, float opacity = 1.0f, bool apply_alpha = true);
     void blit_filtered(IntPoint, Gfx::Bitmap const&, IntRect const& src_rect, Function<Color(Color)> const&, bool apply_alpha = true);
     void draw_text(FloatRect const&, StringView, Font const&, TextAlignment = TextAlignment::TopLeft, Color = Color::Black, TextElision = TextElision::None, TextWrapping = TextWrapping::DontWrap);
-    void draw_text(Function<void(FloatRect const&, Utf8CodePointIterator&)>, FloatRect const&, StringView, Font const&, TextAlignment = TextAlignment::TopLeft, TextElision = TextElision::None, TextWrapping = TextWrapping::DontWrap);
-    void draw_text(Function<void(FloatRect const&, Utf8CodePointIterator&)>, FloatRect const&, Utf8View const&, Font const&, TextAlignment = TextAlignment::TopLeft, TextElision = TextElision::None, TextWrapping = TextWrapping::DontWrap);
     void draw_text(IntRect const&, StringView, Font const&, TextAlignment = TextAlignment::TopLeft, Color = Color::Black, TextElision = TextElision::None, TextWrapping = TextWrapping::DontWrap);
-    void draw_text(Function<void(FloatRect const&, Utf8CodePointIterator&)>, IntRect const&, StringView, Font const&, TextAlignment = TextAlignment::TopLeft, TextElision = TextElision::None, TextWrapping = TextWrapping::DontWrap);
-    void draw_text(Function<void(FloatRect const&, Utf8CodePointIterator&)>, IntRect const&, Utf8View const&, Font const&, TextAlignment = TextAlignment::TopLeft, TextElision = TextElision::None, TextWrapping = TextWrapping::DontWrap);
     void draw_emoji(IntPoint, Gfx::Bitmap const&, Font const&);
     void draw_glyph(FloatPoint, u32, Font const&, Color);
     void draw_glyph_or_emoji(FloatPoint, Utf8CodePointIterator&, Font const&, Color);"
ea8d0304e905f726e2f4d4b305e44f34bb58bb2d,2024-08-10 14:08:12,Aliaksandr Kalenik,libweb: Create clip and scroll frame trees separately for each navigable,False,Create clip and scroll frame trees separately for each navigable,libweb,"diff --git a/Tests/LibWeb/Ref/iframe-contains-scrollable-box.html b/Tests/LibWeb/Ref/iframe-contains-scrollable-box.html
new file mode 100644
index 000000000000..ba7a74bd8305
--- /dev/null
+++ b/Tests/LibWeb/Ref/iframe-contains-scrollable-box.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<link rel=""match"" href=""reference/iframe-contains-scrollable-box-ref.html"" />
+<style>
+    iframe {
+        width: 300px;
+        height: 200px;
+        border: 1px solid #ccc;
+    }
+</style>
+<iframe
+    srcdoc=""
+    <!DOCTYPE html>
+    <style>
+        * {
+            scrollbar-width: none;
+        }
+        body {
+            margin: 0;
+        }
+        #scrollable-box {
+            width: 300px;
+            height: 200px;
+            overflow-y: scroll;
+            border: 1px solid #ccc;
+            box-sizing: border-box;
+        }
+        #scroll-space-filler {
+            height: 300px;
+        }
+        #box {
+            width: 50px;
+            height: 50px;
+            background-color: magenta;
+        }
+    </style>
+    <div id='scrollable-box'>
+        <div id='scroll-space-filler'></div>
+        <div id='box'></div>
+        <div id='scroll-space-filler'></div>
+    </div>
+    <script>
+        const scrollable = document.getElementById('scrollable-box');
+        scrollable.scrollTop = 300;
+    </script>
+""
+></iframe>
diff --git a/Tests/LibWeb/Ref/reference/iframe-contains-scrollable-box-ref.html b/Tests/LibWeb/Ref/reference/iframe-contains-scrollable-box-ref.html
new file mode 100644
index 000000000000..ac2ff5ef34eb
--- /dev/null
+++ b/Tests/LibWeb/Ref/reference/iframe-contains-scrollable-box-ref.html
@@ -0,0 +1,36 @@
+<!DOCTYPE html>
+<style>
+    iframe {
+        width: 300px;
+        height: 200px;
+        border: 1px solid #ccc;
+    }
+</style>
+<iframe
+    srcdoc=""
+    <!DOCTYPE html>
+    <style>
+        * {
+            scrollbar-width: none;
+        }
+        body {
+            margin: 0;
+        }
+        #scrollable-box {
+            width: 300px;
+            height: 200px;
+            overflow-y: scroll;
+            border: 1px solid #ccc;
+            box-sizing: border-box;
+        }
+        #box {
+            width: 50px;
+            height: 50px;
+            background-color: magenta;
+        }
+    </style>
+    <div id='scrollable-box'>
+        <div id='box'></div>
+    </div>
+""
+></iframe>
diff --git a/Userland/Libraries/LibWeb/DOM/Document.cpp b/Userland/Libraries/LibWeb/DOM/Document.cpp
index ce4ae6157dbb..1943ae4dcf15 100644
--- a/Userland/Libraries/LibWeb/DOM/Document.cpp
+++ b/Userland/Libraries/LibWeb/DOM/Document.cpp
@@ -1156,12 +1156,10 @@ void Document::update_layout()
     navigable->set_needs_display();
     set_needs_to_resolve_paint_only_properties();
 
-    if (navigable->is_traversable()) {
-        // NOTE: The assignment of scroll frames only needs to occur for traversables because they take care of all
-        //       nested navigable documents.
-        paintable()->assign_scroll_frames();
-        paintable()->assign_clip_frames();
+    paintable()->assign_scroll_frames();
+    paintable()->assign_clip_frames();
 
+    if (navigable->is_traversable()) {
         page().client().page_did_layout();
     }
 
diff --git a/Userland/Libraries/LibWeb/HTML/Navigable.cpp b/Userland/Libraries/LibWeb/HTML/Navigable.cpp
index 3656952810bb..b81996d7a636 100644
--- a/Userland/Libraries/LibWeb/HTML/Navigable.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Navigable.cpp
@@ -5,6 +5,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <LibWeb/CSS/SystemColor.h>
 #include <LibWeb/Crypto/Crypto.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/DOM/DocumentLoading.h>
@@ -2082,11 +2083,18 @@ void Navigable::inform_the_navigation_api_about_aborting_navigation()
     }));
 }
 
-void Navigable::record_display_list(Painting::DisplayListRecorder& display_list_recorder, PaintConfig config)
+RefPtr<Painting::DisplayList> Navigable::record_display_list(PaintConfig config)
 {
     auto document = active_document();
     if (!document)
-        return;
+        return {};
+
+    auto display_list = Painting::DisplayList::create();
+    Painting::DisplayListRecorder display_list_recorder(display_list);
+
+    if (config.canvas_fill_rect.has_value()) {
+        display_list_recorder.fill_rect(config.canvas_fill_rect.value(), CSS::SystemColor::canvas());
+    }
 
     auto const& page = traversable_navigable()->page();
     auto viewport_rect = page.css_to_device_rect(this->viewport_rect());
@@ -2109,27 +2117,22 @@ void Navigable::record_display_list(Painting::DisplayListRecorder& display_list_
 
     auto& viewport_paintable = *document->paintable();
 
-    // NOTE: We only need to refresh the scroll state for traversables because they are responsible
-    //       for tracking the state of all nested navigables.
-    if (is_traversable()) {
-        viewport_paintable.refresh_scroll_state();
-        viewport_paintable.refresh_clip_state();
-    }
+    viewport_paintable.refresh_scroll_state();
+    viewport_paintable.refresh_clip_state();
 
     viewport_paintable.paint_all_phases(context);
 
-    // FIXME: Support scrollable frames inside iframes.
-    if (is_traversable()) {
-        Vector<Gfx::IntPoint> scroll_offsets_by_frame_id;
-        scroll_offsets_by_frame_id.resize(viewport_paintable.scroll_state.size());
-        for (auto [_, scrollable_frame] : viewport_paintable.scroll_state) {
-            auto scroll_offset = context.rounded_device_point(scrollable_frame->offset).to_type<int>();
-            scroll_offsets_by_frame_id[scrollable_frame->id] = scroll_offset;
-        }
-        display_list_recorder.display_list().apply_scroll_offsets(scroll_offsets_by_frame_id);
+    Vector<Gfx::IntPoint> scroll_offsets_by_frame_id;
+    scroll_offsets_by_frame_id.resize(viewport_paintable.scroll_state.size());
+    for (auto [_, scrollable_frame] : viewport_paintable.scroll_state) {
+        auto scroll_offset = context.rounded_device_point(scrollable_frame->offset).to_type<int>();
+        scroll_offsets_by_frame_id[scrollable_frame->id] = scroll_offset;
     }
+    display_list_recorder.display_list().apply_scroll_offsets(scroll_offsets_by_frame_id);
 
     m_needs_repaint = false;
+
+    return display_list;
 }
 
 // https://html.spec.whatwg.org/multipage/browsing-the-web.html#event-uni
diff --git a/Userland/Libraries/LibWeb/HTML/Navigable.h b/Userland/Libraries/LibWeb/HTML/Navigable.h
index 066c3d023b01..e58f32830c7f 100644
--- a/Userland/Libraries/LibWeb/HTML/Navigable.h
+++ b/Userland/Libraries/LibWeb/HTML/Navigable.h
@@ -185,8 +185,9 @@ class Navigable : public JS::Cell {
         bool paint_overlay { false };
         bool should_show_line_box_borders { false };
         bool has_focus { false };
+        Optional<Gfx::IntRect> canvas_fill_rect {};
     };
-    void record_display_list(Painting::DisplayListRecorder& display_list_recorder, PaintConfig);
+    RefPtr<Painting::DisplayList> record_display_list(PaintConfig);
 
     Page& page() { return m_page; }
     Page const& page() const { return m_page; }
diff --git a/Userland/Libraries/LibWeb/HTML/TraversableNavigable.cpp b/Userland/Libraries/LibWeb/HTML/TraversableNavigable.cpp
index e7b07400fde7..dbef941553df 100644
--- a/Userland/Libraries/LibWeb/HTML/TraversableNavigable.cpp
+++ b/Userland/Libraries/LibWeb/HTML/TraversableNavigable.cpp
@@ -6,7 +6,6 @@
 
 #include <AK/QuickSort.h>
 #include <LibWeb/Bindings/MainThreadVM.h>
-#include <LibWeb/CSS/SystemColor.h>
 #include <LibWeb/DOM/Document.h>
 #include <LibWeb/HTML/BrowsingContextGroup.h>
 #include <LibWeb/HTML/DocumentState.h>
@@ -1190,17 +1189,15 @@ JS::GCPtr<DOM::Node> TraversableNavigable::currently_focused_area()
 
 void TraversableNavigable::paint(DevicePixelRect const& content_rect, Painting::BackingStore& target, PaintOptions paint_options)
 {
-    auto display_list = Painting::DisplayList::create();
-    Painting::DisplayListRecorder display_list_recorder(display_list);
-
-    Gfx::IntRect bitmap_rect { {}, content_rect.size().to_type<int>() };
-    display_list_recorder.fill_rect(bitmap_rect, CSS::SystemColor::canvas());
-
     HTML::Navigable::PaintConfig paint_config;
     paint_config.paint_overlay = paint_options.paint_overlay == PaintOptions::PaintOverlay::Yes;
     paint_config.should_show_line_box_borders = paint_options.should_show_line_box_borders;
     paint_config.has_focus = paint_options.has_focus;
-    record_display_list(display_list_recorder, paint_config);
+    paint_config.canvas_fill_rect = Gfx::IntRect { {}, content_rect.size() };
+    auto display_list = record_display_list(paint_config);
+    if (!display_list) {
+        return;
+    }
 
     switch (page().client().display_list_player_type()) {
     case DisplayListPlayerType::SkiaGPUIfAvailable: {
@@ -1209,7 +1206,7 @@ void TraversableNavigable::paint(DevicePixelRect const& content_rect, Painting::
             auto& iosurface_backing_store = static_cast<Painting::IOSurfaceBackingStore&>(target);
             auto texture = m_metal_context->create_texture_from_iosurface(iosurface_backing_store.iosurface_handle());
             Painting::DisplayListPlayerSkia player(*m_skia_backend_context, *texture);
-            player.execute(display_list);
+            player.execute(*display_list);
             return;
         }
 #endif
@@ -1217,19 +1214,19 @@ void TraversableNavigable::paint(DevicePixelRect const& content_rect, Painting::
 #ifdef USE_VULKAN
         if (m_skia_backend_context) {
             Painting::DisplayListPlayerSkia player(*m_skia_backend_context, target.bitmap());
-            player.execute(display_list);
+            player.execute(*display_list);
             return;
         }
 #endif
 
         // Fallback to CPU backend if GPU is not available
         Painting::DisplayListPlayerSkia player(target.bitmap());
-        player.execute(display_list);
+        player.execute(*display_list);
         break;
     }
     case DisplayListPlayerType::SkiaCPU: {
         Painting::DisplayListPlayerSkia player(target.bitmap());
-        player.execute(display_list);
+        player.execute(*display_list);
         break;
     }
     default:
diff --git a/Userland/Libraries/LibWeb/Painting/Command.h b/Userland/Libraries/LibWeb/Painting/Command.h
index 57761afbabee..192a296290f0 100644
--- a/Userland/Libraries/LibWeb/Painting/Command.h
+++ b/Userland/Libraries/LibWeb/Painting/Command.h
@@ -360,6 +360,18 @@ struct AddMask {
     }
 };
 
+struct PaintNestedDisplayList {
+    RefPtr<DisplayList> display_list;
+    Gfx::IntRect rect;
+
+    [[nodiscard]] Gfx::IntRect bounding_rect() const { return rect; }
+
+    void translate_by(Gfx::IntPoint const& offset)
+    {
+        rect.translate_by(offset);
+    }
+};
+
 using Command = Variant<
     DrawGlyphRun,
     FillRect,
@@ -389,6 +401,7 @@ using Command = Variant<
     DrawRect,
     DrawTriangleWave,
     AddRoundedRectClip,
-    AddMask>;
+    AddMask,
+    PaintNestedDisplayList>;
 
 }
diff --git a/Userland/Libraries/LibWeb/Painting/DisplayList.cpp b/Userland/Libraries/LibWeb/Painting/DisplayList.cpp
index 81be86eb4362..50744a700a43 100644
--- a/Userland/Libraries/LibWeb/Painting/DisplayList.cpp
+++ b/Userland/Libraries/LibWeb/Painting/DisplayList.cpp
@@ -86,6 +86,7 @@ void DisplayListPlayer::execute(DisplayList& display_list)
         else HANDLE_COMMAND(DrawTriangleWave, draw_triangle_wave)
         else HANDLE_COMMAND(AddRoundedRectClip, add_rounded_rect_clip)
         else HANDLE_COMMAND(AddMask, add_mask)
+        else HANDLE_COMMAND(PaintNestedDisplayList, paint_nested_display_list)
         else VERIFY_NOT_REACHED();
         // clang-format on
     }
diff --git a/Userland/Libraries/LibWeb/Painting/DisplayList.h b/Userland/Libraries/LibWeb/Painting/DisplayList.h
index 25b86339b4de..c286b5e00c1d 100644
--- a/Userland/Libraries/LibWeb/Painting/DisplayList.h
+++ b/Userland/Libraries/LibWeb/Painting/DisplayList.h
@@ -70,6 +70,7 @@ class DisplayListPlayer {
     virtual void draw_triangle_wave(DrawTriangleWave const&) = 0;
     virtual void add_rounded_rect_clip(AddRoundedRectClip const&) = 0;
     virtual void add_mask(AddMask const&) = 0;
+    virtual void paint_nested_display_list(PaintNestedDisplayList const&) = 0;
     virtual bool would_be_fully_clipped_by_painter(Gfx::IntRect) const = 0;
 };
 
diff --git a/Userland/Libraries/LibWeb/Painting/DisplayListPlayerSkia.cpp b/Userland/Libraries/LibWeb/Painting/DisplayListPlayerSkia.cpp
index 5ab90d6a277c..0ba62f001cda 100644
--- a/Userland/Libraries/LibWeb/Painting/DisplayListPlayerSkia.cpp
+++ b/Userland/Libraries/LibWeb/Painting/DisplayListPlayerSkia.cpp
@@ -1299,6 +1299,13 @@ void DisplayListPlayerSkia::add_mask(AddMask const& command)
     surface().canvas().clipShader(shader);
 }
 
+void DisplayListPlayerSkia::paint_nested_display_list(PaintNestedDisplayList const& command)
+{
+    auto& canvas = surface().canvas();
+    canvas.translate(command.rect.x(), command.rect.y());
+    execute(*command.display_list);
+}
+
 bool DisplayListPlayerSkia::would_be_fully_clipped_by_painter(Gfx::IntRect rect) const
 {
     return surface().canvas().quickReject(to_skia_rect(rect));
diff --git a/Userland/Libraries/LibWeb/Painting/DisplayListPlayerSkia.h b/Userland/Libraries/LibWeb/Painting/DisplayListPlayerSkia.h
index 4e3c9eecb463..18b0d4ef9623 100644
--- a/Userland/Libraries/LibWeb/Painting/DisplayListPlayerSkia.h
+++ b/Userland/Libraries/LibWeb/Painting/DisplayListPlayerSkia.h
@@ -77,6 +77,7 @@ class DisplayListPlayerSkia : public DisplayListPlayer {
     void draw_triangle_wave(DrawTriangleWave const&) override;
     void add_rounded_rect_clip(AddRoundedRectClip const&) override;
     void add_mask(AddMask const&) override;
+    void paint_nested_display_list(PaintNestedDisplayList const&) override;
 
     bool would_be_fully_clipped_by_painter(Gfx::IntRect) const override;
 
diff --git a/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.cpp b/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.cpp
index cc7f77a284df..170f519b1f25 100644
--- a/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.cpp
+++ b/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.cpp
@@ -22,6 +22,13 @@ void DisplayListRecorder::append(Command&& command)
     m_command_list.append(move(command), state().scroll_frame_id);
 }
 
+void DisplayListRecorder::paint_nested_display_list(RefPtr<DisplayList> display_list, Gfx::IntRect rect)
+{
+    append(PaintNestedDisplayList {
+        .display_list = move(display_list),
+        .rect = state().translation.map(rect) });
+}
+
 void DisplayListRecorder::add_rounded_rect_clip(CornerRadii corner_radii, Gfx::IntRect border_rect, CornerClip corner_clip)
 {
     append(AddRoundedRectClip {
diff --git a/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.h b/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.h
index b58de8113b8b..8af41429e30e 100644
--- a/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.h
+++ b/Userland/Libraries/LibWeb/Painting/DisplayListRecorder.h
@@ -121,6 +121,8 @@ class DisplayListRecorder {
     void push_stacking_context(PushStackingContextParams params);
     void pop_stacking_context();
 
+    void paint_nested_display_list(RefPtr<DisplayList> display_list, Gfx::IntRect rect);
+
     void add_rounded_rect_clip(CornerRadii corner_radii, Gfx::IntRect border_rect, CornerClip corner_clip);
     void add_mask(RefPtr<DisplayList> display_list, Gfx::IntRect rect);
 
diff --git a/Userland/Libraries/LibWeb/Painting/NestedBrowsingContextPaintable.cpp b/Userland/Libraries/LibWeb/Painting/NestedBrowsingContextPaintable.cpp
index 9515ff44216e..f54ad3b35f78 100644
--- a/Userland/Libraries/LibWeb/Painting/NestedBrowsingContextPaintable.cpp
+++ b/Userland/Libraries/LibWeb/Painting/NestedBrowsingContextPaintable.cpp
@@ -40,8 +40,7 @@ void NestedBrowsingContextPaintable::paint(PaintContext& context, PaintPhase pha
 
     if (phase == PaintPhase::Foreground) {
         auto absolute_rect = this->absolute_rect();
-        absolute_rect.translate_by(enclosing_scroll_frame_offset());
-        auto clip_rect = context.rounded_device_rect(absolute_rect);
+        auto clip_rect = context.rounded_device_rect(absolute_rect.translated(enclosing_scroll_frame_offset()));
         ScopedCornerRadiusClip corner_clip { context, clip_rect, normalized_border_radii_data(ShrinkRadiiForBorders::Yes) };
 
         auto const* hosted_document = layout_box().dom_node().content_document_without_origin_check();
@@ -54,14 +53,13 @@ void NestedBrowsingContextPaintable::paint(PaintContext& context, PaintPhase pha
         context.display_list_recorder().save();
 
         context.display_list_recorder().add_clip_rect(clip_rect.to_type<int>());
-        auto absolute_device_rect = context.enclosing_device_rect(absolute_rect);
-        context.display_list_recorder().translate(absolute_device_rect.x().value(), absolute_device_rect.y().value());
 
         HTML::Navigable::PaintConfig paint_config;
         paint_config.paint_overlay = context.should_paint_overlay();
         paint_config.should_show_line_box_borders = context.should_show_line_box_borders();
         paint_config.has_focus = context.has_focus();
-        const_cast<DOM::Document*>(hosted_document)->navigable()->record_display_list(context.display_list_recorder(), paint_config);
+        auto display_list = const_cast<DOM::Document*>(hosted_document)->navigable()->record_display_list(paint_config);
+        context.display_list_recorder().paint_nested_display_list(display_list, context.enclosing_device_rect(absolute_rect).to_type<int>());
 
         context.display_list_recorder().restore();
 
diff --git a/Userland/Libraries/LibWeb/SVG/SVGDecodedImageData.cpp b/Userland/Libraries/LibWeb/SVG/SVGDecodedImageData.cpp
index 06a12a993c18..33007243c1a2 100644
--- a/Userland/Libraries/LibWeb/SVG/SVGDecodedImageData.cpp
+++ b/Userland/Libraries/LibWeb/SVG/SVGDecodedImageData.cpp
@@ -92,17 +92,16 @@ RefPtr<Gfx::Bitmap> SVGDecodedImageData::render(Gfx::IntSize size) const
     m_document->navigable()->set_viewport_size(size.to_type<CSSPixels>());
     m_document->update_layout();
 
-    auto display_list = Painting::DisplayList::create();
-    Painting::DisplayListRecorder display_list_recorder(display_list);
-
-    m_document->navigable()->record_display_list(display_list_recorder, {});
+    auto display_list = m_document->navigable()->record_display_list({});
+    if (!display_list)
+        return {};
 
     auto painting_command_executor_type = m_page_client->display_list_player_type();
     switch (painting_command_executor_type) {
     case DisplayListPlayerType::SkiaGPUIfAvailable:
     case DisplayListPlayerType::SkiaCPU: {
         Painting::DisplayListPlayerSkia display_list_player { *bitmap };
-        display_list_player.execute(display_list);
+        display_list_player.execute(*display_list);
         break;
     }
     default:"
4bf08e4d529a9181484825c73a75c2e10d150976,2021-11-23 16:53:54,Andreas Kling,libcore: Add syscall wrapper for close(),False,Add syscall wrapper for close(),libcore,"diff --git a/Userland/Libraries/LibCore/System.cpp b/Userland/Libraries/LibCore/System.cpp
index c1a66dac1798..ccaa2ed5cb27 100644
--- a/Userland/Libraries/LibCore/System.cpp
+++ b/Userland/Libraries/LibCore/System.cpp
@@ -10,6 +10,7 @@
 #include <fcntl.h>
 #include <stdarg.h>
 #include <sys/mman.h>
+#include <unistd.h>
 
 #define HANDLE_SYSCALL_RETURN_VALUE(syscall_name, rc, success_value) \
     if ((rc) < 0) {                                                  \
@@ -115,4 +116,11 @@ ErrorOr<int> open(StringView path, int options, ...)
 #endif
 }
 
+ErrorOr<void> close(int fd)
+{
+    if (::close(fd) < 0)
+        return Error::from_syscall(""close""sv, -errno);
+    return {};
+}
+
 }
diff --git a/Userland/Libraries/LibCore/System.h b/Userland/Libraries/LibCore/System.h
index 07179cf78f3c..de2259683f43 100644
--- a/Userland/Libraries/LibCore/System.h
+++ b/Userland/Libraries/LibCore/System.h
@@ -23,5 +23,6 @@ ErrorOr<int> fcntl(int fd, int command, ...);
 ErrorOr<void*> mmap(void* address, size_t, int protection, int flags, int fd, off_t, size_t alignment = 0, StringView name = {});
 ErrorOr<void> munmap(void* address, size_t);
 ErrorOr<int> open(StringView path, int options, ...);
+ErrorOr<void> close(int fd);
 
 }"
f3e85e43c739741b15c1f421b04384431eb3167f,2021-01-30 22:57:39,Andreas Kling,libweb: Handle WebContent process crashes gracefully :^),False,Handle WebContent process crashes gracefully :^),libweb,"diff --git a/Userland/Libraries/LibWeb/OutOfProcessWebView.cpp b/Userland/Libraries/LibWeb/OutOfProcessWebView.cpp
index 282749090c58..ba4cb6d03b21 100644
--- a/Userland/Libraries/LibWeb/OutOfProcessWebView.cpp
+++ b/Userland/Libraries/LibWeb/OutOfProcessWebView.cpp
@@ -41,14 +41,40 @@ OutOfProcessWebView::OutOfProcessWebView()
 {
     set_should_hide_unnecessary_scrollbars(true);
     set_focus_policy(GUI::FocusPolicy::StrongFocus);
-    m_client = WebContentClient::construct(*this);
-    client().post_message(Messages::WebContentServer::UpdateSystemTheme(Gfx::current_system_theme_buffer()));
+
+    create_client();
 }
 
 OutOfProcessWebView::~OutOfProcessWebView()
 {
 }
 
+void OutOfProcessWebView::create_client()
+{
+    m_client_state = {};
+
+    m_client_state.client = WebContentClient::construct(*this);
+    m_client_state.client->on_web_content_process_crash = [this] {
+        create_client();
+        ASSERT(m_client_state.client);
+        handle_resize();
+        StringBuilder builder;
+        builder.append(""<html><head><title>Crashed: "");
+        builder.append(m_url.to_string());
+        builder.append(""</title></head><body>"");
+        builder.append(""<h1>Web page crashed"");
+        if (!m_url.host().is_empty()) {
+            builder.appendff("" on {}"", m_url.host());
+        }
+        builder.append(""</h1>"");
+        builder.appendff(""The web page <a href='{}'>{}</a> has crashed.<br><br>You can reload the page to try again."", m_url, m_url);
+        builder.append(""</body></html>"");
+        load_html(builder.to_string(), m_url);
+    };
+
+    client().post_message(Messages::WebContentServer::UpdateSystemTheme(Gfx::current_system_theme_buffer()));
+}
+
 void OutOfProcessWebView::load(const URL& url)
 {
     m_url = url;
@@ -78,7 +104,7 @@ void OutOfProcessWebView::paint_event(GUI::PaintEvent& event)
     GUI::Painter painter(*this);
     painter.add_clip_rect(event.rect());
 
-    if (!m_has_usable_bitmap) {
+    if (!m_client_state.has_usable_bitmap) {
         painter.fill_rect(frame_inner_rect(), palette().base());
         return;
     }
@@ -86,43 +112,47 @@ void OutOfProcessWebView::paint_event(GUI::PaintEvent& event)
     painter.add_clip_rect(frame_inner_rect());
     painter.translate(frame_thickness(), frame_thickness());
 
-    ASSERT(m_front_bitmap);
-    painter.blit({ 0, 0 }, *m_front_bitmap, m_front_bitmap->rect());
+    ASSERT(m_client_state.front_bitmap);
+    painter.blit({ 0, 0 }, *m_client_state.front_bitmap, m_client_state.front_bitmap->rect());
 }
 
 void OutOfProcessWebView::resize_event(GUI::ResizeEvent& event)
 {
     GUI::ScrollableWidget::resize_event(event);
+    handle_resize();
+}
 
+void OutOfProcessWebView::handle_resize()
+{
     client().post_message(Messages::WebContentServer::SetViewportRect(Gfx::IntRect({ horizontal_scrollbar().value(), vertical_scrollbar().value() }, available_size())));
 
-    if (m_front_bitmap) {
-        m_front_bitmap = nullptr;
-        client().post_message(Messages::WebContentServer::RemoveBackingStore(m_front_bitmap_id));
+    if (m_client_state.front_bitmap) {
+        m_client_state.front_bitmap = nullptr;
+        client().post_message(Messages::WebContentServer::RemoveBackingStore(m_client_state.front_bitmap_id));
     }
 
-    if (m_back_bitmap) {
-        m_back_bitmap = nullptr;
-        client().post_message(Messages::WebContentServer::RemoveBackingStore(m_back_bitmap_id));
+    if (m_client_state.back_bitmap) {
+        m_client_state.back_bitmap = nullptr;
+        client().post_message(Messages::WebContentServer::RemoveBackingStore(m_client_state.back_bitmap_id));
     }
 
-    m_front_bitmap_id = -1;
-    m_back_bitmap_id = -1;
-    m_has_usable_bitmap = false;
+    m_client_state.front_bitmap_id = -1;
+    m_client_state.back_bitmap_id = -1;
+    m_client_state.has_usable_bitmap = false;
 
     if (available_size().is_empty())
         return;
 
     if (auto new_bitmap = Gfx::Bitmap::create_shareable(Gfx::BitmapFormat::RGB32, available_size())) {
-        m_front_bitmap = move(new_bitmap);
-        m_front_bitmap_id = m_next_bitmap_id++;
-        client().post_message(Messages::WebContentServer::AddBackingStore(m_front_bitmap_id, m_front_bitmap->to_shareable_bitmap()));
+        m_client_state.front_bitmap = move(new_bitmap);
+        m_client_state.front_bitmap_id = m_client_state.next_bitmap_id++;
+        client().post_message(Messages::WebContentServer::AddBackingStore(m_client_state.front_bitmap_id, m_client_state.front_bitmap->to_shareable_bitmap()));
     }
 
     if (auto new_bitmap = Gfx::Bitmap::create_shareable(Gfx::BitmapFormat::RGB32, available_size())) {
-        m_back_bitmap = move(new_bitmap);
-        m_back_bitmap_id = m_next_bitmap_id++;
-        client().post_message(Messages::WebContentServer::AddBackingStore(m_back_bitmap_id, m_back_bitmap->to_shareable_bitmap()));
+        m_client_state.back_bitmap = move(new_bitmap);
+        m_client_state.back_bitmap_id = m_client_state.next_bitmap_id++;
+        client().post_message(Messages::WebContentServer::AddBackingStore(m_client_state.back_bitmap_id, m_client_state.back_bitmap->to_shareable_bitmap()));
     }
 
     request_repaint();
@@ -157,10 +187,10 @@ void OutOfProcessWebView::theme_change_event(GUI::ThemeChangeEvent& event)
 
 void OutOfProcessWebView::notify_server_did_paint(Badge<WebContentClient>, i32 bitmap_id)
 {
-    if (m_back_bitmap_id == bitmap_id) {
-        m_has_usable_bitmap = true;
-        swap(m_back_bitmap, m_front_bitmap);
-        swap(m_back_bitmap_id, m_front_bitmap_id);
+    if (m_client_state.back_bitmap_id == bitmap_id) {
+        m_client_state.has_usable_bitmap = true;
+        swap(m_client_state.back_bitmap, m_client_state.front_bitmap);
+        swap(m_client_state.back_bitmap_id, m_client_state.front_bitmap_id);
         update();
     }
 }
@@ -256,14 +286,15 @@ void OutOfProcessWebView::request_repaint()
 {
     // If this widget was instantiated but not yet added to a window,
     // it won't have a back bitmap yet, so we can just skip repaint requests.
-    if (!m_back_bitmap)
+    if (!m_client_state.back_bitmap)
         return;
-    client().post_message(Messages::WebContentServer::Paint(m_back_bitmap->rect().translated(horizontal_scrollbar().value(), vertical_scrollbar().value()), m_back_bitmap_id));
+    client().post_message(Messages::WebContentServer::Paint(m_client_state.back_bitmap->rect().translated(horizontal_scrollbar().value(), vertical_scrollbar().value()), m_client_state.back_bitmap_id));
 }
 
 WebContentClient& OutOfProcessWebView::client()
 {
-    return *m_client;
+    ASSERT(m_client_state.client);
+    return *m_client_state.client;
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/OutOfProcessWebView.h b/Userland/Libraries/LibWeb/OutOfProcessWebView.h
index 3a9167a06ca0..750da66d0931 100644
--- a/Userland/Libraries/LibWeb/OutOfProcessWebView.h
+++ b/Userland/Libraries/LibWeb/OutOfProcessWebView.h
@@ -81,18 +81,22 @@ class OutOfProcessWebView final
     virtual void did_scroll() override;
 
     void request_repaint();
+    void handle_resize();
 
+    void create_client();
     WebContentClient& client();
 
     URL m_url;
 
-    RefPtr<WebContentClient> m_client;
-    RefPtr<Gfx::Bitmap> m_front_bitmap;
-    RefPtr<Gfx::Bitmap> m_back_bitmap;
-    i32 m_front_bitmap_id { -1 };
-    i32 m_back_bitmap_id { -1 };
-    i32 m_next_bitmap_id { 0 };
-    bool m_has_usable_bitmap { false };
+    struct ClientState {
+        RefPtr<WebContentClient> client;
+        RefPtr<Gfx::Bitmap> front_bitmap;
+        RefPtr<Gfx::Bitmap> back_bitmap;
+        i32 front_bitmap_id { -1 };
+        i32 back_bitmap_id { -1 };
+        i32 next_bitmap_id { 0 };
+        bool has_usable_bitmap { false };
+    } m_client_state;
 };
 
 }
diff --git a/Userland/Libraries/LibWeb/WebContentClient.cpp b/Userland/Libraries/LibWeb/WebContentClient.cpp
index dd40e426beb6..087f9f9c9e1b 100644
--- a/Userland/Libraries/LibWeb/WebContentClient.cpp
+++ b/Userland/Libraries/LibWeb/WebContentClient.cpp
@@ -37,6 +37,12 @@ WebContentClient::WebContentClient(OutOfProcessWebView& view)
     handshake();
 }
 
+void WebContentClient::die()
+{
+    ASSERT(on_web_content_process_crash);
+    on_web_content_process_crash();
+}
+
 void WebContentClient::handshake()
 {
     auto response = send_sync<Messages::WebContentServer::Greet>(getpid());
diff --git a/Userland/Libraries/LibWeb/WebContentClient.h b/Userland/Libraries/LibWeb/WebContentClient.h
index 2078882578d3..194901a8098a 100644
--- a/Userland/Libraries/LibWeb/WebContentClient.h
+++ b/Userland/Libraries/LibWeb/WebContentClient.h
@@ -35,7 +35,7 @@ namespace Web {
 
 class OutOfProcessWebView;
 
-class WebContentClient
+class WebContentClient final
     : public IPC::ServerConnection<WebContentClientEndpoint, WebContentServerEndpoint>
     , public WebContentClientEndpoint {
     C_OBJECT(WebContentClient);
@@ -43,9 +43,13 @@ class WebContentClient
 public:
     virtual void handshake() override;
 
+    Function<void()> on_web_content_process_crash;
+
 private:
     WebContentClient(OutOfProcessWebView&);
 
+    virtual void die() override;
+
     virtual void handle(const Messages::WebContentClient::DidPaint&) override;
     virtual void handle(const Messages::WebContentClient::DidFinishLoading&) override;
     virtual void handle(const Messages::WebContentClient::DidInvalidateContentRect&) override;"
ed153a1720e94e636481d3e10e90f419719e37e5,2024-08-19 03:05:02,Diego Frias,libwasm: Grow table type in `table.grow`,False,Grow table type in `table.grow`,libwasm,"diff --git a/Userland/Libraries/LibWasm/AbstractMachine/AbstractMachine.h b/Userland/Libraries/LibWasm/AbstractMachine/AbstractMachine.h
index 3d8070439142..9830aec314e6 100644
--- a/Userland/Libraries/LibWasm/AbstractMachine/AbstractMachine.h
+++ b/Userland/Libraries/LibWasm/AbstractMachine/AbstractMachine.h
@@ -408,6 +408,9 @@ class TableInstance {
             return false;
         for (size_t i = previous_size; i < m_elements.size(); ++i)
             m_elements[i] = fill_value;
+
+        m_type = TableType { m_type.element_type(), Limits(m_type.limits().min() + size_to_grow, m_type.limits().max()) };
+
         return true;
     }"
c4f2ce76bf48b8c36d5d83ca63d076d2d5c97fd0,2022-04-02 00:56:25,Lady Gegga,base: Add Thai characters to font Katica Regular 10,False,Add Thai characters to font Katica Regular 10,base,"diff --git a/Base/res/fonts/KaticaRegular10.font b/Base/res/fonts/KaticaRegular10.font
index 1c34b47f566d..f126e30586cf 100644
Binary files a/Base/res/fonts/KaticaRegular10.font and b/Base/res/fonts/KaticaRegular10.font differ"
f7c9cd06aced12353df678196889cd35aa7ceb5f,2021-04-18 20:05:00,Gunnar Beutner,ports: Build shared library for libtiff,False,Build shared library for libtiff,ports,"diff --git a/Ports/libtiff/package.sh b/Ports/libtiff/package.sh
index 258cb25f105d..8121611cb88b 100755
--- a/Ports/libtiff/package.sh
+++ b/Ports/libtiff/package.sh
@@ -7,3 +7,10 @@ http://download.osgeo.org/libtiff/tiff-${version}.tar.gz.sig tiff-${version}.tar
 auth_type=""sig""
 auth_import_key=""EBDFDB21B020EE8FD151A88DE301047DE1198975""
 auth_opts=""tiff-${version}.tar.gz.sig tiff-${version}.tar.gz""
+
+install() {
+    run make DESTDIR=$DESTDIR $installopts install
+    ${CC} -shared -o $DESTDIR/usr/local/lib/libtiff.so -Wl,--whole-archive $DESTDIR/usr/local/lib/libtiff.a -Wl,--no-whole-archive
+    ${CC} -shared -o $DESTDIR/usr/local/lib/libtiffxx.so -Wl,--whole-archive $DESTDIR/usr/local/lib/libtiffxx.a -Wl,--no-whole-archive
+    rm -f $DESTDIR/usr/local/lib/libtiff.la $DESTDIR/usr/local/lib/libtiffxx.la
+}"
c2960e68a897a3c437c21d7fa457d00a14fca143,2021-12-13 02:21:08,Jelle Raaijmakers,libgl: Implement `glLightModelf` and `glLightModelfv`,False,Implement `glLightModelf` and `glLightModelfv`,libgl,"diff --git a/Userland/Libraries/LibGL/GL/gl.h b/Userland/Libraries/LibGL/GL/gl.h
index 2c4e5ef9032e..d7ad62a267bc 100644
--- a/Userland/Libraries/LibGL/GL/gl.h
+++ b/Userland/Libraries/LibGL/GL/gl.h
@@ -169,6 +169,9 @@ extern ""C"" {
 #define GL_RGBA 0x1908
 
 // Lighting related defines
+#define GL_LIGHT_MODEL_TWO_SIDE 0x0B52
+#define GL_LIGHT_MODEL_AMBIENT 0x0B53
+
 #define GL_FLAT 0x1D00
 #define GL_SMOOTH 0x1D01
 #define GL_AMBIENT 0x1200
@@ -458,6 +461,8 @@ GLAPI void glPixelStorei(GLenum pname, GLint param);
 GLAPI void glScissor(GLint x, GLint y, GLsizei width, GLsizei height);
 GLAPI void glLightf(GLenum light, GLenum pname, GLfloat param);
 GLAPI void glLightfv(GLenum light, GLenum pname, GLfloat* param);
+GLAPI void glLightModelf(GLenum pname, GLfloat param);
+GLAPI void glLightModelfv(GLenum pname, GLfloat const* params);
 GLAPI void glStencilFunc(GLenum func, GLint ref, GLuint mask);
 GLAPI void glStencilFuncSeparate(GLenum face, GLenum func, GLint ref, GLuint mask);
 GLAPI void glStencilOp(GLenum sfail, GLenum dpfail, GLenum dppass);
diff --git a/Userland/Libraries/LibGL/GLContext.h b/Userland/Libraries/LibGL/GLContext.h
index 54db9d8aebd5..24e3af6bed4e 100644
--- a/Userland/Libraries/LibGL/GLContext.h
+++ b/Userland/Libraries/LibGL/GLContext.h
@@ -101,6 +101,7 @@ class GLContext {
     virtual void gl_line_width(GLfloat width) = 0;
     virtual void gl_push_attrib(GLbitfield mask) = 0;
     virtual void gl_pop_attrib() = 0;
+    virtual void gl_light_model(GLenum pname, GLfloat x, GLfloat y, GLfloat z, GLfloat w) = 0;
 
     virtual void present() = 0;
 };
diff --git a/Userland/Libraries/LibGL/GLLights.cpp b/Userland/Libraries/LibGL/GLLights.cpp
index cdbcd16e26ed..156e5d90b390 100644
--- a/Userland/Libraries/LibGL/GLLights.cpp
+++ b/Userland/Libraries/LibGL/GLLights.cpp
@@ -23,6 +23,22 @@ void glLightfv(GLenum light, GLenum pname, GLfloat* param)
     dbgln_if(GL_DEBUG, ""glLightfv({}, {}, {}): unimplemented"", light, pname, param);
 }
 
+void glLightModelf(GLenum pname, GLfloat param)
+{
+    g_gl_context->gl_light_model(pname, param, 0.0f, 0.0f, 0.0f);
+}
+
+void glLightModelfv(GLenum pname, GLfloat const* params)
+{
+    switch (pname) {
+    case GL_LIGHT_MODEL_AMBIENT:
+        g_gl_context->gl_light_model(pname, params[0], 0.0f, 0.0f, 0.0f);
+        break;
+    default:
+        g_gl_context->gl_light_model(pname, params[0], params[1], params[2], params[3]);
+    }
+}
+
 void glMaterialf(GLenum face, GLenum pname, GLfloat param)
 {
     VERIFY(face == GL_SHININESS);
diff --git a/Userland/Libraries/LibGL/SoftwareGLContext.cpp b/Userland/Libraries/LibGL/SoftwareGLContext.cpp
index 862f3c41e486..826eda3c8a9e 100644
--- a/Userland/Libraries/LibGL/SoftwareGLContext.cpp
+++ b/Userland/Libraries/LibGL/SoftwareGLContext.cpp
@@ -2345,6 +2345,27 @@ void SoftwareGLContext::gl_pop_attrib()
     dbgln_if(GL_DEBUG, ""SoftwareGLContext FIXME: implement gl_pop_attrib()"");
 }
 
+void SoftwareGLContext::gl_light_model(GLenum pname, GLfloat x, GLfloat y, GLfloat z, GLfloat w)
+{
+    APPEND_TO_CALL_LIST_AND_RETURN_IF_NEEDED(gl_light_model, pname, x, y, z, w);
+
+    RETURN_WITH_ERROR_IF(!(pname == GL_LIGHT_MODEL_AMBIENT
+                             || pname == GL_LIGHT_MODEL_TWO_SIDE),
+        GL_INVALID_ENUM);
+
+    switch (pname) {
+    case GL_LIGHT_MODEL_AMBIENT:
+        m_light_model_ambient = { x, y, z, w };
+        break;
+    case GL_LIGHT_MODEL_TWO_SIDE:
+        VERIFY(y == 0.0f && z == 0.0f && w == 0.0f);
+        m_light_model_two_side = x;
+        break;
+    default:
+        VERIFY_NOT_REACHED();
+    }
+}
+
 void SoftwareGLContext::present()
 {
     m_rasterizer.blit_to(*m_frontbuffer);
diff --git a/Userland/Libraries/LibGL/SoftwareGLContext.h b/Userland/Libraries/LibGL/SoftwareGLContext.h
index 6f07d7c6402b..091a16919d82 100644
--- a/Userland/Libraries/LibGL/SoftwareGLContext.h
+++ b/Userland/Libraries/LibGL/SoftwareGLContext.h
@@ -112,6 +112,7 @@ class SoftwareGLContext : public GLContext {
     virtual void gl_line_width(GLfloat width) override;
     virtual void gl_push_attrib(GLbitfield mask) override;
     virtual void gl_pop_attrib() override;
+    virtual void gl_light_model(GLenum pname, GLfloat x, GLfloat y, GLfloat z, GLfloat w) override;
     virtual void present() override;
 
 private:
@@ -284,7 +285,8 @@ class SoftwareGLContext : public GLContext {
             decltype(&SoftwareGLContext::gl_materialv),
             decltype(&SoftwareGLContext::gl_line_width),
             decltype(&SoftwareGLContext::gl_push_attrib),
-            decltype(&SoftwareGLContext::gl_pop_attrib)>;
+            decltype(&SoftwareGLContext::gl_pop_attrib),
+            decltype(&SoftwareGLContext::gl_light_model)>;
 
         using ExtraSavedArguments = Variant<
             FloatMatrix4x4>;
@@ -333,6 +335,9 @@ class SoftwareGLContext : public GLContext {
     RasterPosition m_current_raster_position;
 
     float m_line_width { 1.0f };
+
+    FloatVector4 m_light_model_ambient { 0.2f, 0.2f, 0.2f, 1.0f };
+    GLfloat m_light_model_two_side { 0.0f };
 };
 
 }"
775742b35d24188070b704be17376945d23813ea,2023-06-08 10:44:47,Aliaksandr Kalenik,libweb: Add support for horizontal margins of grid items in GFC,False,Add support for horizontal margins of grid items in GFC,libweb,"diff --git a/Tests/LibWeb/Layout/expected/grid/grid-item-horizontal-margins-auto.txt b/Tests/LibWeb/Layout/expected/grid/grid-item-horizontal-margins-auto.txt
new file mode 100644
index 000000000000..406e05d3bd54
--- /dev/null
+++ b/Tests/LibWeb/Layout/expected/grid/grid-item-horizontal-margins-auto.txt
@@ -0,0 +1,116 @@
+Viewport <#document> at (0,0) content-size 800x600 children: not-inline
+  BlockContainer <html> at (1,1) content-size 798x458.28125 [BFC] children: not-inline
+    BlockContainer <body> at (10,10) content-size 780x440.28125 children: not-inline
+      Box <div.grid> at (11,11) content-size 500x438.28125 [GFC] children: not-inline
+        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
+          TextNode <#text>
+        BlockContainer <div.left-margin-auto.right-margin-auto> at (99.71875,12) content-size 322.5625x17.46875 [BFC] children: inline
+          line 0 width: 322.5625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
+            frag 0 from TextNode start: 0, length: 38, rect: [99.71875,12 322.5625x17.46875]
+              ""auto horizontal margins and auto width""
+          TextNode <#text>
+        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
+          TextNode <#text>
+        BlockContainer <div.left-margin-auto> at (252.375,31.46875) content-size 257.625x17.46875 [BFC] children: inline
+          line 0 width: 257.625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
+            frag 0 from TextNode start: 0, length: 31, rect: [252.375,31.46875 257.625x17.46875]
+              ""auto left margin and auto width""
+          TextNode <#text>
+        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
+          TextNode <#text>
+        BlockContainer <div.right-margin-auto> at (12,50.9375) content-size 268.484375x17.46875 [BFC] children: inline
+          line 0 width: 268.484375, height: 17.46875, bottom: 17.46875, baseline: 13.53125
+            frag 0 from TextNode start: 0, length: 32, rect: [12,50.9375 268.484375x17.46875]
+              ""auto right margin and auto width""
+          TextNode <#text>
+        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
+          TextNode <#text>
+        BlockContainer <div.left-margin-auto.right-margin-auto.fit-content-width> at (75.257812,70.40625) content-size 371.484375x17.46875 [BFC] children: inline
+          line 0 width: 371.484375, height: 17.46875, bottom: 17.46875, baseline: 13.53125
+            frag 0 from TextNode start: 0, length: 45, rect: [75.257812,70.40625 371.484375x17.46875]
+              ""auto horizontal margins and fit-content width""
+          TextNode <#text>
+        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
+          TextNode <#text>
+        BlockContainer <div.left-margin-auto.fit-content-width> at (203.453125,89.875) content-size 306.546875x17.46875 [BFC] children: inline
+          line 0 width: 306.546875, height: 17.46875, bottom: 17.46875, baseline: 13.53125
+            frag 0 from TextNode start: 0, length: 38, rect: [203.453125,89.875 306.546875x17.46875]
+              ""auto left margin and fit-content width""
+          TextNode <#text>
+        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
+          TextNode <#text>
+        BlockContainer <div.right-margin-auto.fit-content-width> at (12,109.34375) content-size 317.40625x17.46875 [BFC] children: inline
+          line 0 width: 317.40625, height: 17.46875, bottom: 17.46875, baseline: 13.53125
+            frag 0 from TextNode start: 0, length: 39, rect: [12,109.34375 317.40625x17.46875]
+              ""auto right margin and fit-content width""
+          TextNode <#text>
+        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
+          TextNode <#text>
+        BlockContainer <div.left-margin-auto.right-margin-auto.fixed-width> at (236,128.8125) content-size 50x105.15625 [BFC] children: inline
+          line 0 width: 36.328125, height: 17.46875, bottom: 17.46875, baseline: 13.53125
+            frag 0 from TextNode start: 0, length: 4, rect: [236,128.8125 36.328125x17.46875]
+              ""auto""
+          line 1 width: 81.84375, height: 17.9375, bottom: 35.40625, baseline: 13.53125
+            frag 0 from TextNode start: 5, length: 10, rect: [236,145.8125 81.84375x17.46875]
+              ""horizontal""
+          line 2 width: 61.453125, height: 18.40625, bottom: 53.34375, baseline: 13.53125
+            frag 0 from TextNode start: 16, length: 7, rect: [236,162.8125 61.453125x17.46875]
+              ""margins""
+          line 3 width: 26.8125, height: 17.875, bottom: 70.28125, baseline: 13.53125
+            frag 0 from TextNode start: 24, length: 3, rect: [236,180.8125 26.8125x17.46875]
+              ""and""
+          line 4 width: 37.28125, height: 18.34375, bottom: 88.21875, baseline: 13.53125
+            frag 0 from TextNode start: 28, length: 5, rect: [236,197.8125 37.28125x17.46875]
+              ""fixed""
+          line 5 width: 39.796875, height: 17.8125, bottom: 105.15625, baseline: 13.53125
+            frag 0 from TextNode start: 34, length: 5, rect: [236,215.8125 39.796875x17.46875]
+              ""width""
+          TextNode <#text>
+        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
+          TextNode <#text>
+        BlockContainer <div.left-margin-auto.fixed-width> at (460,235.96875) content-size 50x105.15625 [BFC] children: inline
+          line 0 width: 36.328125, height: 17.46875, bottom: 17.46875, baseline: 13.53125
+            frag 0 from TextNode start: 0, length: 4, rect: [460,235.96875 36.328125x17.46875]
+              ""auto""
+          line 1 width: 26.25, height: 17.9375, bottom: 35.40625, baseline: 13.53125
+            frag 0 from TextNode start: 5, length: 4, rect: [460,252.96875 26.25x17.46875]
+              ""left""
+          line 2 width: 52.109375, height: 18.40625, bottom: 53.34375, baseline: 13.53125
+            frag 0 from TextNode start: 10, length: 6, rect: [460,269.96875 52.109375x17.46875]
+              ""margin""
+          line 3 width: 26.8125, height: 17.875, bottom: 70.28125, baseline: 13.53125
+            frag 0 from TextNode start: 17, length: 3, rect: [460,287.96875 26.8125x17.46875]
+              ""and""
+          line 4 width: 37.28125, height: 18.34375, bottom: 88.21875, baseline: 13.53125
+            frag 0 from TextNode start: 21, length: 5, rect: [460,304.96875 37.28125x17.46875]
+              ""fixed""
+          line 5 width: 39.796875, height: 17.8125, bottom: 105.15625, baseline: 13.53125
+            frag 0 from TextNode start: 27, length: 5, rect: [460,322.96875 39.796875x17.46875]
+              ""width""
+          TextNode <#text>
+        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
+          TextNode <#text>
+        BlockContainer <div.right-margin-auto.fixed-width> at (12,343.125) content-size 50x105.15625 [BFC] children: inline
+          line 0 width: 36.328125, height: 17.46875, bottom: 17.46875, baseline: 13.53125
+            frag 0 from TextNode start: 0, length: 4, rect: [12,343.125 36.328125x17.46875]
+              ""auto""
+          line 1 width: 37.109375, height: 17.9375, bottom: 35.40625, baseline: 13.53125
+            frag 0 from TextNode start: 5, length: 5, rect: [12,360.125 37.109375x17.46875]
+              ""right""
+          line 2 width: 52.109375, height: 18.40625, bottom: 53.34375, baseline: 13.53125
+            frag 0 from TextNode start: 11, length: 6, rect: [12,377.125 52.109375x17.46875]
+              ""margin""
+          line 3 width: 26.8125, height: 17.875, bottom: 70.28125, baseline: 13.53125
+            frag 0 from TextNode start: 18, length: 3, rect: [12,395.125 26.8125x17.46875]
+              ""and""
+          line 4 width: 37.28125, height: 18.34375, bottom: 88.21875, baseline: 13.53125
+            frag 0 from TextNode start: 22, length: 5, rect: [12,412.125 37.28125x17.46875]
+              ""fixed""
+          line 5 width: 39.796875, height: 17.8125, bottom: 105.15625, baseline: 13.53125
+            frag 0 from TextNode start: 28, length: 5, rect: [12,430.125 39.796875x17.46875]
+              ""width""
+          TextNode <#text>
+        BlockContainer <(anonymous)> (not painted) [BFC] children: inline
+          TextNode <#text>
+      BlockContainer <(anonymous)> at (10,450.28125) content-size 780x0 children: inline
+        TextNode <#text>
diff --git a/Tests/LibWeb/Layout/input/grid/grid-item-horizontal-margins-auto.html b/Tests/LibWeb/Layout/input/grid/grid-item-horizontal-margins-auto.html
new file mode 100644
index 000000000000..c489ed6c05ad
--- /dev/null
+++ b/Tests/LibWeb/Layout/input/grid/grid-item-horizontal-margins-auto.html
@@ -0,0 +1,40 @@
+<!DOCTYPE html>
+<style>
+    * {
+        border: 1px solid black;
+    }
+    .grid {
+        display: grid;
+        grid-template-columns: auto;
+        width: 500px;
+    }
+    .left-margin-auto {
+        margin-left: auto;
+    }
+    .right-margin-auto {
+        margin-right: auto;
+    }
+    .fit-content-width {
+        width: fit-content;
+        background-color: lightpink;
+    }
+    .fixed-width {
+        width: 50px;
+        background-color: lightgoldenrodyellow;
+    }
+</style>
+<div class=""grid"">
+
+<div class=""left-margin-auto right-margin-auto"">auto horizontal margins and auto width</div>
+<div class=""left-margin-auto"">auto left margin and auto width</div>
+<div class=""right-margin-auto"">auto right margin and auto width</div>
+
+<div class=""left-margin-auto right-margin-auto fit-content-width"">auto horizontal margins and fit-content width</div>
+<div class=""left-margin-auto fit-content-width"">auto left margin and fit-content width</div>
+<div class=""right-margin-auto fit-content-width"">auto right margin and fit-content width</div>
+
+<div class=""left-margin-auto right-margin-auto fixed-width"">auto horizontal margins and fixed width</div>
+<div class=""left-margin-auto fixed-width"">auto left margin and fixed width</div>
+<div class=""right-margin-auto fixed-width"">auto right margin and fixed width</div>
+
+</div>
diff --git a/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp b/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp
index 339685cdd96a..969f89ec55dd 100644
--- a/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp
+++ b/Userland/Libraries/LibWeb/Layout/GridFormattingContext.cpp
@@ -1367,14 +1367,35 @@ void GridFormattingContext::resolve_grid_item_widths()
         box_state.border_left = border_left;
         box_state.border_right = border_right;
 
-        auto const& computed_width = item.box().computed_values().width();
+        auto const& computed_values = item.box().computed_values();
+        auto const& computed_width = computed_values.width();
+
+        auto try_compute_width = [&](CSSPixels a_width) {
+            CSSPixels width = a_width;
+            auto underflow_px = containing_block_width - width - box_state.border_left - box_state.border_right - box_state.padding_left - box_state.padding_right - box_state.margin_left - box_state.margin_right;
+            if (computed_values.margin().left().is_auto() && computed_values.margin().right().is_auto()) {
+                auto half_of_the_underflow = underflow_px / 2;
+                box_state.margin_left = half_of_the_underflow;
+                box_state.margin_right = half_of_the_underflow;
+            } else if (computed_values.margin().left().is_auto()) {
+                box_state.margin_left = underflow_px;
+            } else if (computed_values.margin().right().is_auto()) {
+                box_state.margin_right = underflow_px;
+            } else if (computed_values.width().is_auto()) {
+                width += underflow_px;
+            }
+
+            return width;
+        };
+
         CSSPixels used_width;
-        if (computed_width.is_auto())
-            used_width = (containing_block_width - box_state.border_left - box_state.border_right - box_state.padding_left - box_state.padding_right);
-        else if (computed_width.is_fit_content())
-            used_width = calculate_fit_content_width(item.box(), get_available_space_for_item(item));
-        else
-            used_width = computed_width.to_px(grid_container(), containing_block_width);
+        if (computed_width.is_auto()) {
+            used_width = try_compute_width(calculate_fit_content_width(item.box(), get_available_space_for_item(item)));
+        } else if (computed_width.is_fit_content()) {
+            used_width = try_compute_width(calculate_fit_content_width(item.box(), get_available_space_for_item(item)));
+        } else {
+            used_width = try_compute_width(computed_width.to_px(grid_container(), containing_block_width));
+        }
         box_state.set_content_width(used_width);
     }
 }
@@ -1435,6 +1456,11 @@ void GridFormattingContext::run(Box const& box, LayoutMode, AvailableSpace const
         box_state.padding_bottom = computed_values.padding().bottom().to_px(grid_container(), 0);
         box_state.padding_left = computed_values.padding().left().to_px(grid_container(), 0);
 
+        box_state.margin_top = computed_values.margin().top().to_px(grid_container(), 0);
+        box_state.margin_right = computed_values.margin().right().to_px(grid_container(), 0);
+        box_state.margin_bottom = computed_values.margin().bottom().to_px(grid_container(), 0);
+        box_state.margin_left = computed_values.margin().left().to_px(grid_container(), 0);
+
         box_state.border_top = computed_values.border_top().width;
         box_state.border_right = computed_values.border_right().width;
         box_state.border_bottom = computed_values.border_bottom().width;
@@ -1476,7 +1502,10 @@ void GridFormattingContext::run(Box const& box, LayoutMode, AvailableSpace const
             y_end += m_grid_rows_and_gaps[i].base_size;
         }
 
-        child_box_state.offset = { x_start + child_box_state.border_left + child_box_state.padding_left, y_start + child_box_state.border_top + child_box_state.padding_top };
+        child_box_state.offset = {
+            x_start + child_box_state.border_left + child_box_state.padding_left + child_box_state.margin_left,
+            y_start + child_box_state.border_top + child_box_state.padding_top + child_box_state.margin_top
+        };
 
         auto available_space_for_children = AvailableSpace(AvailableSize::make_definite(child_box_state.content_width()), AvailableSize::make_definite(child_box_state.content_height()));
         if (auto independent_formatting_context = layout_inside(child_box, LayoutMode::Normal, available_space_for_children))"
34f7bf979d7d446d87bbe053c27efe82251325ea,2024-10-23 23:12:56,uysalibov,libweb: Implemented shadows support for CanvasRenderingContext2D,False,Implemented shadows support for CanvasRenderingContext2D,libweb,"diff --git a/Userland/Libraries/LibWeb/HTML/Canvas/CanvasShadowStyles.h b/Userland/Libraries/LibWeb/HTML/Canvas/CanvasShadowStyles.h
new file mode 100644
index 000000000000..63eefb45bda9
--- /dev/null
+++ b/Userland/Libraries/LibWeb/HTML/Canvas/CanvasShadowStyles.h
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2024, İbrahim UYSAL <uysalibov@gmail.com>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <AK/String.h>
+#include <LibWeb/CSS/Parser/Parser.h>
+#include <LibWeb/HTML/Canvas/CanvasState.h>
+#include <LibWeb/HTML/CanvasGradient.h>
+#include <LibWeb/HTML/CanvasPattern.h>
+
+namespace Web::HTML {
+
+// https://html.spec.whatwg.org/multipage/canvas.html#canvasshadowstyles
+template<typename IncludingClass>
+class CanvasShadowStyles {
+public:
+    ~CanvasShadowStyles() = default;
+
+    virtual float shadow_offset_x() const = 0;
+    virtual void set_shadow_offset_x(float offsetX) = 0;
+
+    virtual float shadow_offset_y() const = 0;
+    virtual void set_shadow_offset_y(float offsetY) = 0;
+
+    virtual String shadow_color() const = 0;
+    virtual void set_shadow_color(String color) = 0;
+
+protected:
+    CanvasShadowStyles() = default;
+
+private:
+    CanvasState::DrawingState& my_drawing_state() { return reinterpret_cast<IncludingClass&>(*this).drawing_state(); }
+    CanvasState::DrawingState const& my_drawing_state() const { return reinterpret_cast<IncludingClass const&>(*this).drawing_state(); }
+};
+
+}
diff --git a/Userland/Libraries/LibWeb/HTML/Canvas/CanvasShadowStyles.idl b/Userland/Libraries/LibWeb/HTML/Canvas/CanvasShadowStyles.idl
index 476494659821..913a12545289 100644
--- a/Userland/Libraries/LibWeb/HTML/Canvas/CanvasShadowStyles.idl
+++ b/Userland/Libraries/LibWeb/HTML/Canvas/CanvasShadowStyles.idl
@@ -1,8 +1,8 @@
 // https://html.spec.whatwg.org/multipage/canvas.html#canvasshadowstyles
 interface mixin CanvasShadowStyles {
     // shadows
-    [FIXME] attribute unrestricted double shadowOffsetX; // (default 0)
-    [FIXME] attribute unrestricted double shadowOffsetY; // (default 0)
+    attribute unrestricted double shadowOffsetX; // (default 0)
+    attribute unrestricted double shadowOffsetY; // (default 0)
     [FIXME] attribute unrestricted double shadowBlur; // (default 0)
-    [FIXME] attribute DOMString shadowColor; // (default transparent black)
+    attribute DOMString shadowColor; // (default transparent black)
 };
diff --git a/Userland/Libraries/LibWeb/HTML/Canvas/CanvasState.h b/Userland/Libraries/LibWeb/HTML/Canvas/CanvasState.h
index 1eb24a3b889e..3d33e336c653 100644
--- a/Userland/Libraries/LibWeb/HTML/Canvas/CanvasState.h
+++ b/Userland/Libraries/LibWeb/HTML/Canvas/CanvasState.h
@@ -80,6 +80,9 @@ class CanvasState {
         Gfx::AffineTransform transform;
         FillOrStrokeStyle fill_style { Gfx::Color::Black };
         FillOrStrokeStyle stroke_style { Gfx::Color::Black };
+        float shadow_offset_x { 0.0f };
+        float shadow_offset_y { 0.0f };
+        Gfx::Color shadow_color { Gfx::Color::Transparent };
         float line_width { 1 };
         Vector<double> dash_list;
         bool image_smoothing_enabled { true };
diff --git a/Userland/Libraries/LibWeb/HTML/CanvasRenderingContext2D.cpp b/Userland/Libraries/LibWeb/HTML/CanvasRenderingContext2D.cpp
index 278cdd14fedb..f97d9eba6af4 100644
--- a/Userland/Libraries/LibWeb/HTML/CanvasRenderingContext2D.cpp
+++ b/Userland/Libraries/LibWeb/HTML/CanvasRenderingContext2D.cpp
@@ -262,6 +262,8 @@ void CanvasRenderingContext2D::stroke_internal(Gfx::Path const& path)
     if (!painter)
         return;
 
+    paint_shadow_for_stroke_internal(path);
+
     auto& state = drawing_state();
 
     if (auto color = state.stroke_style.as_color(); color.has_value()) {
@@ -299,6 +301,8 @@ void CanvasRenderingContext2D::fill_internal(Gfx::Path const& path, Gfx::Winding
     if (!painter)
         return;
 
+    paint_shadow_for_fill_internal(path, winding_rule);
+
     auto path_to_fill = path;
     path_to_fill.close_all_subpaths();
     auto& state = this->drawing_state();
@@ -719,4 +723,95 @@ void CanvasRenderingContext2D::set_global_alpha(float alpha)
     drawing_state().global_alpha = alpha;
 }
 
+float CanvasRenderingContext2D::shadow_offset_x() const
+{
+    return drawing_state().shadow_offset_x;
+}
+
+void CanvasRenderingContext2D::set_shadow_offset_x(float offsetX)
+{
+    // https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-shadowoffsetx
+    drawing_state().shadow_offset_x = offsetX;
+}
+
+float CanvasRenderingContext2D::shadow_offset_y() const
+{
+    return drawing_state().shadow_offset_y;
+}
+
+void CanvasRenderingContext2D::set_shadow_offset_y(float offsetY)
+{
+    // https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-shadowoffsety
+    drawing_state().shadow_offset_y = offsetY;
+}
+
+String CanvasRenderingContext2D::shadow_color() const
+{
+    // https://html.spec.whatwg.org/multipage/canvas.html#dom-context-2d-shadowcolor
+    return drawing_state().shadow_color.to_string(Gfx::Color::HTMLCompatibleSerialization::Yes);
+}
+
+void CanvasRenderingContext2D::set_shadow_color(String color)
+{
+    auto& realm = static_cast<CanvasRenderingContext2D&>(*this).realm();
+
+    // 1. Let context be this's canvas attribute's value, if that is an element; otherwise null.
+    auto parser = CSS::Parser::Parser::create(CSS::Parser::ParsingContext(realm), color);
+
+    auto style_value = parser.parse_as_css_value(CSS::PropertyID::Color);
+
+    // 2. Let parsedValue be the result of parsing the given value with context if non-null.
+    if (style_value && style_value->has_color()) {
+        auto parsedValue = style_value->to_color(OptionalNone());
+
+        // 4. Set this's shadow color to parsedValue.
+        drawing_state().shadow_color = parsedValue;
+    } else {
+        // 3. If parsedValue is failure, then return.
+        return;
+    }
+}
+void CanvasRenderingContext2D::paint_shadow_for_fill_internal(Gfx::Path const& path, Gfx::WindingRule winding_rule)
+{
+    auto* painter = this->painter();
+    if (!painter)
+        return;
+
+    auto path_to_fill = path;
+    path_to_fill.close_all_subpaths();
+
+    auto& state = this->drawing_state();
+
+    painter->save();
+
+    Gfx::AffineTransform transform;
+    transform.translate(state.shadow_offset_x, state.shadow_offset_y);
+    painter->set_transform(transform);
+    painter->fill_path(path_to_fill, state.shadow_color.with_opacity(state.global_alpha), winding_rule);
+
+    painter->restore();
+
+    did_draw(path_to_fill.bounding_box());
+}
+
+void CanvasRenderingContext2D::paint_shadow_for_stroke_internal(Gfx::Path const& path)
+{
+    auto* painter = this->painter();
+    if (!painter)
+        return;
+
+    auto& state = drawing_state();
+
+    painter->save();
+
+    Gfx::AffineTransform transform;
+    transform.translate(state.shadow_offset_x, state.shadow_offset_y);
+    painter->set_transform(transform);
+    painter->stroke_path(path, state.shadow_color.with_opacity(state.global_alpha), state.line_width);
+
+    painter->restore();
+
+    did_draw(path.bounding_box());
+}
+
 }
diff --git a/Userland/Libraries/LibWeb/HTML/CanvasRenderingContext2D.h b/Userland/Libraries/LibWeb/HTML/CanvasRenderingContext2D.h
index 8ad9732388cf..d39ebef8de0b 100644
--- a/Userland/Libraries/LibWeb/HTML/CanvasRenderingContext2D.h
+++ b/Userland/Libraries/LibWeb/HTML/CanvasRenderingContext2D.h
@@ -24,6 +24,7 @@
 #include <LibWeb/HTML/Canvas/CanvasPath.h>
 #include <LibWeb/HTML/Canvas/CanvasPathDrawingStyles.h>
 #include <LibWeb/HTML/Canvas/CanvasRect.h>
+#include <LibWeb/HTML/Canvas/CanvasShadowStyles.h>
 #include <LibWeb/HTML/Canvas/CanvasState.h>
 #include <LibWeb/HTML/Canvas/CanvasText.h>
 #include <LibWeb/HTML/Canvas/CanvasTextDrawingStyles.h>
@@ -41,6 +42,7 @@ class CanvasRenderingContext2D
     , public CanvasState
     , public CanvasTransform<CanvasRenderingContext2D>
     , public CanvasFillStrokeStyles<CanvasRenderingContext2D>
+    , public CanvasShadowStyles<CanvasRenderingContext2D>
     , public CanvasRect
     , public CanvasDrawPath
     , public CanvasText
@@ -99,6 +101,13 @@ class CanvasRenderingContext2D
     virtual float global_alpha() const override;
     virtual void set_global_alpha(float) override;
 
+    virtual float shadow_offset_x() const override;
+    virtual void set_shadow_offset_x(float) override;
+    virtual float shadow_offset_y() const override;
+    virtual void set_shadow_offset_y(float) override;
+    virtual String shadow_color() const override;
+    virtual void set_shadow_color(String) override;
+
     HTMLCanvasElement& canvas_element();
     HTMLCanvasElement const& canvas_element() const;
 
@@ -131,6 +140,8 @@ class CanvasRenderingContext2D
     void stroke_internal(Gfx::Path const&);
     void fill_internal(Gfx::Path const&, Gfx::WindingRule);
     void clip_internal(Gfx::Path&, Gfx::WindingRule);
+    void paint_shadow_for_fill_internal(Gfx::Path const&, Gfx::WindingRule);
+    void paint_shadow_for_stroke_internal(Gfx::Path const&);
 
     JS::NonnullGCPtr<HTMLCanvasElement> m_element;
     OwnPtr<Gfx::Painter> m_painter;"
bcb893789862380cd9199915c205d8986c3dc407,2022-03-31 15:36:13,kleines Filmröllchen,ak: Merge HashTable bucket state into one enum,False,Merge HashTable bucket state into one enum,ak,"diff --git a/AK/HashTable.h b/AK/HashTable.h
index 79fc23206065..f724c21b2dfc 100644
--- a/AK/HashTable.h
+++ b/AK/HashTable.h
@@ -28,6 +28,15 @@ enum class HashSetExistingEntryBehavior {
     Replace
 };
 
+// FIXME: Choose specific values so that we can do bit-based checks for various classes of state.
+enum class BucketState : u8 {
+    Free = 0,
+    Used,
+    Deleted,
+    Rehashed,
+    End,
+};
+
 template<typename HashTableType, typename T, typename BucketType>
 class HashTableIterator {
     friend HashTableType;
@@ -46,10 +55,10 @@ class HashTableIterator {
             return;
         do {
             ++m_bucket;
-            if (m_bucket->used)
+            if (m_bucket->state == BucketState::Used)
                 return;
-        } while (!m_bucket->end);
-        if (m_bucket->end)
+        } while (m_bucket->state != BucketState::End);
+        if (m_bucket->state == BucketState::End)
             m_bucket = nullptr;
     }
 
@@ -87,9 +96,7 @@ class HashTable {
     static constexpr size_t load_factor_in_percent = 60;
 
     struct Bucket {
-        bool used;
-        bool deleted;
-        bool end;
+        BucketState state;
         alignas(T) u8 storage[sizeof(T)];
 
         T* slot() { return reinterpret_cast<T*>(storage); }
@@ -99,8 +106,7 @@ class HashTable {
     struct OrderedBucket {
         OrderedBucket* previous;
         OrderedBucket* next;
-        bool used;
-        bool deleted;
+        BucketState state;
         alignas(T) u8 storage[sizeof(T)];
         T* slot() { return reinterpret_cast<T*>(storage); }
         const T* slot() const { return reinterpret_cast<const T*>(storage); }
@@ -128,7 +134,7 @@ class HashTable {
             return;
 
         for (size_t i = 0; i < m_capacity; ++i) {
-            if (m_buckets[i].used)
+            if (m_buckets[i].state == BucketState::Used)
                 m_buckets[i].slot()->~T();
         }
 
@@ -232,7 +238,7 @@ class HashTable {
             return Iterator(m_collection_data.head);
 
         for (size_t i = 0; i < m_capacity; ++i) {
-            if (m_buckets[i].used)
+            if (m_buckets[i].state == BucketState::Used)
                 return Iterator(&m_buckets[i]);
         }
         return end();
@@ -253,7 +259,7 @@ class HashTable {
             return ConstIterator(m_collection_data.head);
 
         for (size_t i = 0; i < m_capacity; ++i) {
-            if (m_buckets[i].used)
+            if (m_buckets[i].state == BucketState::Used)
                 return ConstIterator(&m_buckets[i]);
         }
         return end();
@@ -281,14 +287,14 @@ class HashTable {
         if constexpr (IsOrdered)
             m_collection_data = { nullptr, nullptr };
         else
-            m_buckets[m_capacity].end = true;
+            m_buckets[m_capacity].state = BucketState::End;
     }
 
     template<typename U = T>
     ErrorOr<HashSetResult> try_set(U&& value, HashSetExistingEntryBehavior existing_entry_behavior = HashSetExistingEntryBehavior::Replace)
     {
         auto* bucket = TRY(try_lookup_for_writing(value));
-        if (bucket->used) {
+        if (bucket->state == BucketState::Used) {
             if (existing_entry_behavior == HashSetExistingEntryBehavior::Keep)
                 return HashSetResult::KeptExistingEntry;
             (*bucket->slot()) = forward<U>(value);
@@ -296,11 +302,9 @@ class HashTable {
         }
 
         new (bucket->slot()) T(forward<U>(value));
-        bucket->used = true;
-        if (bucket->deleted) {
-            bucket->deleted = false;
+        if (bucket->state == BucketState::Deleted)
             --m_deleted_count;
-        }
+        bucket->state = BucketState::Used;
 
         if constexpr (IsOrdered) {
             if (!m_collection_data.head) [[unlikely]] {
@@ -393,11 +397,7 @@ class HashTable {
     {
         VERIFY(iterator.m_bucket);
         auto& bucket = *iterator.m_bucket;
-        VERIFY(bucket.used);
-        VERIFY(!bucket.deleted);
-
-        if constexpr (!IsOrdered)
-            VERIFY(!bucket.end);
+        VERIFY(bucket.state == BucketState::Used);
 
         delete_bucket(bucket);
         --m_size;
@@ -412,7 +412,7 @@ class HashTable {
         size_t removed_count = 0;
         for (size_t i = 0; i < m_capacity; ++i) {
             auto& bucket = m_buckets[i];
-            if (bucket.used && predicate(*bucket.slot())) {
+            if (bucket.state == BucketState::Used && predicate(*bucket.slot())) {
                 delete_bucket(bucket);
                 ++removed_count;
             }
@@ -430,7 +430,7 @@ class HashTable {
     {
         auto& bucket = lookup_for_writing(value);
         new (bucket.slot()) T(move(value));
-        bucket.used = true;
+        bucket.state = BucketState::Used;
 
         if constexpr (IsOrdered) {
             if (!m_collection_data.head) [[unlikely]] {
@@ -473,7 +473,7 @@ class HashTable {
         if constexpr (IsOrdered)
             m_collection_data = { nullptr, nullptr };
         else
-            m_buckets[m_capacity].end = true;
+            m_buckets[m_capacity].state = BucketState::End;
 
         if (!old_buckets)
             return {};
@@ -500,10 +500,10 @@ class HashTable {
         for (;;) {
             auto& bucket = m_buckets[hash % m_capacity];
 
-            if (bucket.used && predicate(*bucket.slot()))
+            if (bucket.state == BucketState::Used && predicate(*bucket.slot()))
                 return &bucket;
 
-            if (!bucket.used && !bucket.deleted)
+            if (bucket.state != BucketState::Used && bucket.state != BucketState::Deleted)
                 return nullptr;
 
             hash = double_hash(hash);
@@ -522,14 +522,14 @@ class HashTable {
         for (;;) {
             auto& bucket = m_buckets[hash % m_capacity];
 
-            if (bucket.used && TraitsForT::equals(*bucket.slot(), value))
+            if (bucket.state == BucketState::Used && TraitsForT::equals(*bucket.slot(), value))
                 return &bucket;
 
-            if (!bucket.used) {
+            if (bucket.state != BucketState::Used) {
                 if (!first_empty_bucket)
                     first_empty_bucket = &bucket;
 
-                if (!bucket.deleted)
+                if (bucket.state != BucketState::Deleted)
                     return const_cast<BucketType*>(first_empty_bucket);
             }
 
@@ -560,8 +560,7 @@ class HashTable {
     void delete_bucket(auto& bucket)
     {
         bucket.slot()->~T();
-        bucket.used = false;
-        bucket.deleted = true;
+        bucket.state = BucketState::Deleted;
 
         if constexpr (IsOrdered) {
             if (bucket.previous)"
40f64d7379e7cc138304f5069006ce9b8e981c87,2021-12-02 01:14:11,Idan Horowitz,kernel: Dispatch handle-able signals instead of crashing if possible,False,Dispatch handle-able signals instead of crashing if possible,kernel,"diff --git a/Kernel/Arch/x86/CPU.h b/Kernel/Arch/x86/CPU.h
index d0c7f5425988..99d579c287f6 100644
--- a/Kernel/Arch/x86/CPU.h
+++ b/Kernel/Arch/x86/CPU.h
@@ -36,7 +36,7 @@ inline u32 get_iopl_from_eflags(u32 eflags)
 const DescriptorTablePointer& get_gdtr();
 const DescriptorTablePointer& get_idtr();
 
-[[noreturn]] void handle_crash(RegisterState const&, char const* description, int signal, bool out_of_memory = false);
+void handle_crash(RegisterState const&, char const* description, int signal, bool out_of_memory = false);
 
 #define LSW(x) ((u32)(x)&0xFFFF)
 #define MSW(x) (((u32)(x) >> 16) & 0xFFFF)
diff --git a/Kernel/Arch/x86/common/Interrupts.cpp b/Kernel/Arch/x86/common/Interrupts.cpp
index 0c2650ed9b59..5cedb4838897 100644
--- a/Kernel/Arch/x86/common/Interrupts.cpp
+++ b/Kernel/Arch/x86/common/Interrupts.cpp
@@ -215,10 +215,16 @@ static void dump(const RegisterState& regs)
 
 void handle_crash(RegisterState const& regs, char const* description, int signal, bool out_of_memory)
 {
-    if (!Process::has_current())
-        PANIC(""{} with !current"", description);
+    auto* current_thread = Thread::current();
+    if (!current_thread)
+        PANIC(""{} with !Thread::current()"", description);
 
-    auto& process = Process::current();
+    if (!current_thread->should_ignore_signal(signal) && !current_thread->is_signal_masked(signal)) {
+        current_thread->send_urgent_signal_to_self(signal);
+        return;
+    }
+
+    auto& process = current_thread->process();
 
     // If a process crashed while inspecting another process,
     // make sure we switch back to the right page tables.
@@ -316,7 +322,7 @@ void page_fault_handler(TrapFrame* trap)
     VirtualAddress userspace_sp = VirtualAddress { regs.userspace_sp() };
     if (!faulted_in_kernel && !MM.validate_user_stack(current_thread->process().address_space(), userspace_sp)) {
         dbgln(""Invalid stack pointer: {}"", userspace_sp);
-        handle_crash(regs, ""Bad stack on page fault"", SIGSEGV);
+        return handle_crash(regs, ""Bad stack on page fault"", SIGSEGV);
     }
 
     if (fault_address >= (FlatPtr)&start_of_ro_after_init && fault_address < (FlatPtr)&end_of_ro_after_init) {
@@ -417,7 +423,7 @@ void page_fault_handler(TrapFrame* trap)
             }
         }
 
-        handle_crash(regs, ""Page Fault"", SIGSEGV, response == PageFaultResponse::OutOfMemory);
+        return handle_crash(regs, ""Page Fault"", SIGSEGV, response == PageFaultResponse::OutOfMemory);
     } else if (response == PageFaultResponse::Continue) {
         dbgln_if(PAGE_FAULT_DEBUG, ""Continuing after resolved page fault"");
     } else {
diff --git a/Kernel/Memory/MemoryManager.cpp b/Kernel/Memory/MemoryManager.cpp
index 42cd4e34f330..54b0adfb0103 100644
--- a/Kernel/Memory/MemoryManager.cpp
+++ b/Kernel/Memory/MemoryManager.cpp
@@ -654,7 +654,7 @@ void MemoryManager::validate_syscall_preconditions(AddressSpace& space, Register
         VirtualAddress userspace_sp = VirtualAddress { regs.userspace_sp() };
         if (!MM.validate_user_stack_no_lock(space, userspace_sp)) {
             dbgln(""Invalid stack pointer: {}"", userspace_sp);
-            unlock_and_handle_crash(""Bad stack on syscall entry"", SIGSEGV);
+            return unlock_and_handle_crash(""Bad stack on syscall entry"", SIGSEGV);
         }
     }
 
@@ -663,17 +663,17 @@ void MemoryManager::validate_syscall_preconditions(AddressSpace& space, Register
         auto* calling_region = MM.find_user_region_from_vaddr_no_lock(space, ip);
         if (!calling_region) {
             dbgln(""Syscall from {:p} which has no associated region"", ip);
-            unlock_and_handle_crash(""Syscall from unknown region"", SIGSEGV);
+            return unlock_and_handle_crash(""Syscall from unknown region"", SIGSEGV);
         }
 
         if (calling_region->is_writable()) {
             dbgln(""Syscall from writable memory at {:p}"", ip);
-            unlock_and_handle_crash(""Syscall from writable memory"", SIGSEGV);
+            return unlock_and_handle_crash(""Syscall from writable memory"", SIGSEGV);
         }
 
         if (space.enforces_syscall_regions() && !calling_region->is_syscall_region()) {
             dbgln(""Syscall from non-syscall region"");
-            unlock_and_handle_crash(""Syscall from non-syscall region"", SIGSEGV);
+            return unlock_and_handle_crash(""Syscall from non-syscall region"", SIGSEGV);
         }
     }
 }
diff --git a/Kernel/Thread.cpp b/Kernel/Thread.cpp
index ea4fc3a9a390..fef73d4e21ae 100644
--- a/Kernel/Thread.cpp
+++ b/Kernel/Thread.cpp
@@ -802,6 +802,12 @@ bool Thread::has_signal_handler(u8 signal) const
     return !action.handler_or_sigaction.is_null();
 }
 
+bool Thread::is_signal_masked(u8 signal) const
+{
+    VERIFY(signal < 32);
+    return (1 << (signal - 1)) & m_signal_mask;
+}
+
 bool Thread::has_alternative_signal_stack() const
 {
     return m_alternative_signal_stack_size != 0;
diff --git a/Kernel/Thread.h b/Kernel/Thread.h
index 29a7bc784eed..4e50c27c3d9d 100644
--- a/Kernel/Thread.h
+++ b/Kernel/Thread.h
@@ -1023,6 +1023,7 @@ class Thread
     [[nodiscard]] bool has_unmasked_pending_signals() const { return m_have_any_unmasked_pending_signals.load(AK::memory_order_consume); }
     [[nodiscard]] bool should_ignore_signal(u8 signal) const;
     [[nodiscard]] bool has_signal_handler(u8 signal) const;
+    [[nodiscard]] bool is_signal_masked(u8 signal) const;
     u32 pending_signals() const;
     u32 pending_signals_for_state() const;"
9d3348d8da8e1149cdf53f51411711301872b023,2021-10-29 23:59:24,Idan Horowitz,libjs: Convert the SetViewValue AO to ThrowCompletionOr,False,Convert the SetViewValue AO to ThrowCompletionOr,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/DataViewPrototype.cpp b/Userland/Libraries/LibJS/Runtime/DataViewPrototype.cpp
index b45292940546..6be3acc13707 100644
--- a/Userland/Libraries/LibJS/Runtime/DataViewPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/DataViewPrototype.cpp
@@ -86,25 +86,23 @@ static ThrowCompletionOr<Value> get_view_value(GlobalObject& global_object, Valu
 
 // 25.3.1.2 SetViewValue ( view, requestIndex, isLittleEndian, type, value ), https://tc39.es/ecma262/#sec-setviewvalue
 template<typename T>
-static Value set_view_value(GlobalObject& global_object, Value request_index, Value is_little_endian, Value value)
+static ThrowCompletionOr<Value> set_view_value(GlobalObject& global_object, Value request_index, Value is_little_endian, Value value)
 {
     auto& vm = global_object.vm();
-    auto* view = TRY_OR_DISCARD(DataViewPrototype::typed_this_value(global_object));
-    auto get_index = TRY_OR_DISCARD(request_index.to_index(global_object));
+    auto* view = TRY(DataViewPrototype::typed_this_value(global_object));
+    auto get_index = TRY(request_index.to_index(global_object));
 
     Value number_value;
     if constexpr (IsIntegral<T> && sizeof(T) == 8)
-        number_value = TRY_OR_DISCARD(value.to_bigint(global_object));
+        number_value = TRY(value.to_bigint(global_object));
     else
-        number_value = TRY_OR_DISCARD(value.to_number(global_object));
+        number_value = TRY(value.to_number(global_object));
 
     auto little_endian = is_little_endian.to_boolean();
 
     auto buffer = view->viewed_array_buffer();
-    if (buffer->is_detached()) {
-        vm.throw_exception<TypeError>(global_object, ErrorType::DetachedArrayBuffer);
-        return {};
-    }
+    if (buffer->is_detached())
+        return vm.throw_completion<TypeError>(global_object, ErrorType::DetachedArrayBuffer);
 
     auto view_offset = view->byte_offset();
     auto view_size = view->byte_length();
@@ -117,10 +115,8 @@ static Value set_view_value(GlobalObject& global_object, Value request_index, Va
     Checked<size_t> end_index = get_index;
     end_index += element_size;
 
-    if (buffer_index.has_overflow() || end_index.has_overflow() || end_index.value() > view_size) {
-        vm.throw_exception<RangeError>(global_object, ErrorType::DataViewOutOfRangeByteOffset, get_index, view_size);
-        return {};
-    }
+    if (buffer_index.has_overflow() || end_index.has_overflow() || end_index.value() > view_size)
+        return vm.throw_completion<RangeError>(global_object, ErrorType::DataViewOutOfRangeByteOffset, get_index, view_size);
 
     return buffer->set_value<T>(buffer_index.value(), number_value, false, ArrayBuffer::Order::Unordered, little_endian);
 }
@@ -188,52 +184,52 @@ JS_DEFINE_OLD_NATIVE_FUNCTION(DataViewPrototype::get_uint_32)
 // 25.3.4.15 DataView.prototype.setBigInt64 ( byteOffset, value [ , littleEndian ] ), https://tc39.es/ecma262/#sec-dataview.prototype.setbigint64
 JS_DEFINE_OLD_NATIVE_FUNCTION(DataViewPrototype::set_big_int_64)
 {
-    return set_view_value<i64>(global_object, vm.argument(0), vm.argument(2), vm.argument(1));
+    return TRY_OR_DISCARD(set_view_value<i64>(global_object, vm.argument(0), vm.argument(2), vm.argument(1)));
 }
 
 JS_DEFINE_OLD_NATIVE_FUNCTION(DataViewPrototype::set_big_uint_64)
 {
-    return set_view_value<u64>(global_object, vm.argument(0), vm.argument(2), vm.argument(1));
+    return TRY_OR_DISCARD(set_view_value<u64>(global_object, vm.argument(0), vm.argument(2), vm.argument(1)));
 }
 
 JS_DEFINE_OLD_NATIVE_FUNCTION(DataViewPrototype::set_float_32)
 {
-    return set_view_value<float>(global_object, vm.argument(0), vm.argument(2), vm.argument(1));
+    return TRY_OR_DISCARD(set_view_value<float>(global_object, vm.argument(0), vm.argument(2), vm.argument(1)));
 }
 
 JS_DEFINE_OLD_NATIVE_FUNCTION(DataViewPrototype::set_float_64)
 {
-    return set_view_value<double>(global_object, vm.argument(0), vm.argument(2), vm.argument(1));
+    return TRY_OR_DISCARD(set_view_value<double>(global_object, vm.argument(0), vm.argument(2), vm.argument(1)));
 }
 
 JS_DEFINE_OLD_NATIVE_FUNCTION(DataViewPrototype::set_int_8)
 {
-    return set_view_value<i8>(global_object, vm.argument(0), Value(true), vm.argument(1));
+    return TRY_OR_DISCARD(set_view_value<i8>(global_object, vm.argument(0), Value(true), vm.argument(1)));
 }
 
 JS_DEFINE_OLD_NATIVE_FUNCTION(DataViewPrototype::set_int_16)
 {
-    return set_view_value<i16>(global_object, vm.argument(0), vm.argument(2), vm.argument(1));
+    return TRY_OR_DISCARD(set_view_value<i16>(global_object, vm.argument(0), vm.argument(2), vm.argument(1)));
 }
 
 JS_DEFINE_OLD_NATIVE_FUNCTION(DataViewPrototype::set_int_32)
 {
-    return set_view_value<i32>(global_object, vm.argument(0), vm.argument(2), vm.argument(1));
+    return TRY_OR_DISCARD(set_view_value<i32>(global_object, vm.argument(0), vm.argument(2), vm.argument(1)));
 }
 
 JS_DEFINE_OLD_NATIVE_FUNCTION(DataViewPrototype::set_uint_8)
 {
-    return set_view_value<u8>(global_object, vm.argument(0), Value(true), vm.argument(1));
+    return TRY_OR_DISCARD(set_view_value<u8>(global_object, vm.argument(0), Value(true), vm.argument(1)));
 }
 
 JS_DEFINE_OLD_NATIVE_FUNCTION(DataViewPrototype::set_uint_16)
 {
-    return set_view_value<u16>(global_object, vm.argument(0), vm.argument(2), vm.argument(1));
+    return TRY_OR_DISCARD(set_view_value<u16>(global_object, vm.argument(0), vm.argument(2), vm.argument(1)));
 }
 
 JS_DEFINE_OLD_NATIVE_FUNCTION(DataViewPrototype::set_uint_32)
 {
-    return set_view_value<u32>(global_object, vm.argument(0), vm.argument(2), vm.argument(1));
+    return TRY_OR_DISCARD(set_view_value<u32>(global_object, vm.argument(0), vm.argument(2), vm.argument(1)));
 }
 
 // 25.3.4.1 get DataView.prototype.buffer, https://tc39.es/ecma262/#sec-get-dataview.prototype.buffer"
98a774a68d7cf7572e2033a4b56bf2f3231541a9,2021-06-19 18:21:18,Itamar,libdebug: Add LineProgram::get_directory_and_file(size_t),False,Add LineProgram::get_directory_and_file(size_t),libdebug,"diff --git a/Userland/Libraries/LibDebug/Dwarf/LineProgram.cpp b/Userland/Libraries/LibDebug/Dwarf/LineProgram.cpp
index b0d7d24b1776..e1d6da2406c6 100644
--- a/Userland/Libraries/LibDebug/Dwarf/LineProgram.cpp
+++ b/Userland/Libraries/LibDebug/Dwarf/LineProgram.cpp
@@ -290,4 +290,13 @@ void LineProgram::run_program()
     }
 }
 
+LineProgram::DirectoryAndFile LineProgram::get_directory_and_file(size_t file_index) const
+{
+    VERIFY(file_index < m_source_files.size());
+    auto file_entry = m_source_files[file_index];
+    VERIFY(file_entry.directory_index < m_source_directories.size());
+    auto directory_entry = m_source_directories[file_entry.directory_index];
+    return { directory_entry, file_entry.name };
+}
+
 }
diff --git a/Userland/Libraries/LibDebug/Dwarf/LineProgram.h b/Userland/Libraries/LibDebug/Dwarf/LineProgram.h
index b69234cd548f..abac23a313f1 100644
--- a/Userland/Libraries/LibDebug/Dwarf/LineProgram.h
+++ b/Userland/Libraries/LibDebug/Dwarf/LineProgram.h
@@ -116,6 +116,12 @@ class LineProgram {
 
     const Vector<LineInfo>& lines() const { return m_lines; }
 
+    struct DirectoryAndFile {
+        FlyString directory;
+        FlyString filename;
+    };
+    DirectoryAndFile get_directory_and_file(size_t file_index) const;
+
 private:
     void parse_unit_header();
     void parse_source_directories();"
6990d629775f2554f4747dc71c51433ca8d45ff3,2020-12-25 02:16:35,Itamar,ports: Tweak configuration flags of gcc port to support shared binaries,False,Tweak configuration flags of gcc port to support shared binaries,ports,"diff --git a/Ports/gcc/package.sh b/Ports/gcc/package.sh
index 177d2bbd48fb..828bfcb07a91 100755
--- a/Ports/gcc/package.sh
+++ b/Ports/gcc/package.sh
@@ -2,7 +2,7 @@
 port=gcc
 version=10.2.0
 useconfigure=true
-configopts=""--target=i686-pc-serenity --with-sysroot=/ --with-build-sysroot=$SERENITY_ROOT/Build/Root --with-newlib --enable-languages=c,c++ --disable-lto --disable-nls""
+configopts=""--target=i686-pc-serenity --with-sysroot=/ --with-build-sysroot=$SERENITY_ROOT/Build/Root --with-newlib --enable-languages=c,c++ --disable-lto --disable-nls --enable-shared --enable-default-pie --enable-host-shared""
 files=""https://ftp.gnu.org/gnu/gcc/gcc-${version}/gcc-${version}.tar.xz gcc-${version}.tar.xz
 https://ftp.gnu.org/gnu/gcc/gcc-${version}/gcc-${version}.tar.xz.sig gcc-${version}.tar.xz.sig
 https://ftp.gnu.org/gnu/gnu-keyring.gpg gnu-keyring.gpg"""
93b6334966a17fe8622615f3dd701206b7d02e14,2024-07-25 20:28:12,Timur Sultanov,libweb: Schedule Microtasks on Microtask queue,False,Schedule Microtasks on Microtask queue,libweb,"diff --git a/Userland/Libraries/LibWeb/HTML/EventLoop/EventLoop.cpp b/Userland/Libraries/LibWeb/HTML/EventLoop/EventLoop.cpp
index e95dd29dc887..c974232665f4 100644
--- a/Userland/Libraries/LibWeb/HTML/EventLoop/EventLoop.cpp
+++ b/Userland/Libraries/LibWeb/HTML/EventLoop/EventLoop.cpp
@@ -400,7 +400,7 @@ int queue_a_task(HTML::Task::Source source, JS::GCPtr<EventLoop> event_loop, JS:
     auto task = HTML::Task::create(event_loop->vm(), source, document, steps);
 
     // 8. Let queue be the task queue to which source is associated on event loop.
-    auto& queue = event_loop->task_queue();
+    auto& queue = source == HTML::Task::Source::Microtask ? event_loop->microtask_queue() : event_loop->task_queue();
 
     // 9. Append task to queue.
     queue.add(task);"
077164ae151c18b164b7745e512360b7e62c11ca,2023-04-12 18:53:51,Nico Weber,"ak: Make grepping for ""lerp"" find mix()",False,"Make grepping for ""lerp"" find mix()",ak,"diff --git a/AK/StdLibExtras.h b/AK/StdLibExtras.h
index 36d2e84ca1e6..c5c7b1a7f9fa 100644
--- a/AK/StdLibExtras.h
+++ b/AK/StdLibExtras.h
@@ -114,7 +114,7 @@ constexpr T clamp(T const& value, IdentityType<T> const& min, IdentityType<T> co
 }
 
 template<typename T, typename U>
-constexpr T mix(T const& v1, T const& v2, U const& interpolation)
+constexpr T mix(T const& v1, T const& v2, U const& interpolation) // aka lerp
 {
     return v1 + (v2 - v1) * interpolation;
 }"
9e667453c7ebd7021a9203a7c8e3688887af0b48,2021-09-12 20:06:52,Brian Gianforcaro,libcore: Make get_password return SecretString instead of String,False,Make get_password return SecretString instead of String,libcore,"diff --git a/Userland/Libraries/LibCore/GetPassword.cpp b/Userland/Libraries/LibCore/GetPassword.cpp
index 252f5dce748d..ea454a605813 100644
--- a/Userland/Libraries/LibCore/GetPassword.cpp
+++ b/Userland/Libraries/LibCore/GetPassword.cpp
@@ -13,7 +13,7 @@
 
 namespace Core {
 
-Result<String, OSError> get_password(const StringView& prompt)
+Result<SecretString, OSError> get_password(const StringView& prompt)
 {
     if (write(STDOUT_FILENO, prompt.characters_without_null_termination(), prompt.length()) < 0)
         return OSError(errno);
@@ -44,8 +44,6 @@ Result<String, OSError> get_password(const StringView& prompt)
     // Remove trailing '\n' read by getline().
     password[line_length - 1] = '\0';
 
-    String s(password);
-    free(password);
-    return s;
+    return SecretString::take_ownership(password, line_length);
 }
 }
diff --git a/Userland/Libraries/LibCore/GetPassword.h b/Userland/Libraries/LibCore/GetPassword.h
index ed16fd74bc4f..6e1e17ed26e1 100644
--- a/Userland/Libraries/LibCore/GetPassword.h
+++ b/Userland/Libraries/LibCore/GetPassword.h
@@ -9,9 +9,10 @@
 #include <AK/OSError.h>
 #include <AK/Result.h>
 #include <AK/String.h>
+#include <LibCore/SecretString.h>
 
 namespace Core {
 
-Result<String, OSError> get_password(const StringView& prompt = ""Password: "");
+Result<SecretString, OSError> get_password(const StringView& prompt = ""Password: ""sv);
 
 }
diff --git a/Userland/Utilities/passwd.cpp b/Userland/Utilities/passwd.cpp
index 23a8c1c2427a..70860db604e0 100644
--- a/Userland/Utilities/passwd.cpp
+++ b/Userland/Utilities/passwd.cpp
@@ -5,6 +5,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/ScopeGuard.h>
 #include <LibCore/Account.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/GetPassword.h>
@@ -114,7 +115,7 @@ int main(int argc, char** argv)
             return 1;
         }
 
-        if (new_password.value() != new_password_retype.value()) {
+        if (new_password.value().view() != new_password_retype.value().view()) {
             warnln(""Sorry, passwords don't match."");
             warnln(""Password for user {} unchanged."", target_account.username());
             return 1;
diff --git a/Userland/Utilities/pls.cpp b/Userland/Utilities/pls.cpp
index a54e76711ad2..e617e7d8a0a4 100644
--- a/Userland/Utilities/pls.cpp
+++ b/Userland/Utilities/pls.cpp
@@ -5,6 +5,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/ScopeGuard.h>
 #include <LibCore/Account.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/GetPassword.h>
diff --git a/Userland/Utilities/su.cpp b/Userland/Utilities/su.cpp
index 9e4827dad689..c9290fd63ce7 100644
--- a/Userland/Utilities/su.cpp
+++ b/Userland/Utilities/su.cpp
@@ -4,6 +4,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/ScopeGuard.h>
 #include <LibCore/Account.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/GetPassword.h>
diff --git a/Userland/Utilities/test-imap.cpp b/Userland/Utilities/test-imap.cpp
index bcafc04532fc..15339f030af2 100644
--- a/Userland/Utilities/test-imap.cpp
+++ b/Userland/Utilities/test-imap.cpp
@@ -22,7 +22,7 @@ int main(int argc, char** argv)
     bool tls { false };
 
     String username;
-    String password;
+    Core::SecretString password;
 
     bool interactive_password;
 
@@ -40,17 +40,17 @@ int main(int argc, char** argv)
             warnln(""{}"", password_or_err.error().string());
             return 1;
         }
-        password = password_or_err.value();
+        password = password_or_err.release_value();
     } else {
         auto standard_input = Core::File::standard_input();
-        password = standard_input->read_all();
+        password = Core::SecretString::take_ownership(standard_input->read_all());
     }
 
     Core::EventLoop loop;
     auto client = IMAP::Client(host, port, tls);
     client.connect()->await();
 
-    auto response = client.login(username, password)->await().release_value();
+    auto response = client.login(username, password.view())->await().release_value();
     outln(""[LOGIN] Login response: {}"", response.response_text());
 
     response = move(client.send_simple_command(IMAP::CommandType::Capability)->await().value().get<IMAP::SolidResponse>());"
8359975ff373c2af36de69cabf2b1501b4bb180b,2021-11-28 12:40:53,Andreas Kling,libgui: Make GUI::TabWidget tab creation APIs take String,False,Make GUI::TabWidget tab creation APIs take String,libgui,"diff --git a/Userland/Libraries/LibGUI/TabWidget.cpp b/Userland/Libraries/LibGUI/TabWidget.cpp
index d2c4136183b7..e9499542ad65 100644
--- a/Userland/Libraries/LibGUI/TabWidget.cpp
+++ b/Userland/Libraries/LibGUI/TabWidget.cpp
@@ -44,9 +44,9 @@ TabWidget::~TabWidget()
 {
 }
 
-ErrorOr<void> TabWidget::try_add_widget(StringView title, Widget& widget)
+ErrorOr<void> TabWidget::try_add_widget(String title, Widget& widget)
 {
-    m_tabs.append({ title, nullptr, &widget });
+    m_tabs.append({ move(title), nullptr, &widget });
     add_child(widget);
     update_focus_policy();
     if (on_tab_count_change)
@@ -54,9 +54,9 @@ ErrorOr<void> TabWidget::try_add_widget(StringView title, Widget& widget)
     return {};
 }
 
-void TabWidget::add_widget(StringView title, Widget& widget)
+void TabWidget::add_widget(String title, Widget& widget)
 {
-    MUST(try_add_widget(title, widget));
+    MUST(try_add_widget(move(title), widget));
 }
 
 void TabWidget::remove_widget(Widget& widget)
diff --git a/Userland/Libraries/LibGUI/TabWidget.h b/Userland/Libraries/LibGUI/TabWidget.h
index ac0d5402d088..2addcc729b44 100644
--- a/Userland/Libraries/LibGUI/TabWidget.h
+++ b/Userland/Libraries/LibGUI/TabWidget.h
@@ -36,24 +36,24 @@ class TabWidget : public Widget {
     GUI::Margins const& container_margins() const { return m_container_margins; }
     void set_container_margins(GUI::Margins const&);
 
-    ErrorOr<void> try_add_widget(StringView, Widget&);
+    ErrorOr<void> try_add_widget(String, Widget&);
 
-    void add_widget(StringView, Widget&);
+    void add_widget(String, Widget&);
     void remove_widget(Widget&);
 
     template<class T, class... Args>
-    ErrorOr<NonnullRefPtr<T>> try_add_tab(StringView title, Args&&... args)
+    ErrorOr<NonnullRefPtr<T>> try_add_tab(String title, Args&&... args)
     {
         auto t = TRY(T::try_create(forward<Args>(args)...));
-        TRY(try_add_widget(title, *t));
+        TRY(try_add_widget(move(title), *t));
         return *t;
     }
 
     template<class T, class... Args>
-    T& add_tab(StringView title, Args&&... args)
+    T& add_tab(String title, Args&&... args)
     {
         auto t = T::construct(forward<Args>(args)...);
-        add_widget(title, *t);
+        add_widget(move(title), *t);
         return *t;
     }"
2a153230299f3ef82d081e3f92873feb4aa2d699,2020-04-18 13:58:22,Andreas Kling,libjs: Pass prototype to BooleanObject constructor,False,Pass prototype to BooleanObject constructor,libjs,"diff --git a/Libraries/LibJS/Runtime/BooleanConstructor.cpp b/Libraries/LibJS/Runtime/BooleanConstructor.cpp
index 3f5d54a68a0f..4ffdf9071ddd 100644
--- a/Libraries/LibJS/Runtime/BooleanConstructor.cpp
+++ b/Libraries/LibJS/Runtime/BooleanConstructor.cpp
@@ -50,8 +50,7 @@ Value BooleanConstructor::call(Interpreter& interpreter)
 
 Value BooleanConstructor::construct(Interpreter& interpreter)
 {
-    auto* bool_object = interpreter.heap().allocate<BooleanObject>(interpreter.argument(0).to_boolean());
-    return Value(bool_object);
+    return BooleanObject::create(interpreter.global_object(), interpreter.argument(0).to_boolean());
 }
 
 }
diff --git a/Libraries/LibJS/Runtime/BooleanObject.cpp b/Libraries/LibJS/Runtime/BooleanObject.cpp
index c0ac80d30b31..f82375958284 100644
--- a/Libraries/LibJS/Runtime/BooleanObject.cpp
+++ b/Libraries/LibJS/Runtime/BooleanObject.cpp
@@ -26,13 +26,20 @@
 
 #include <LibJS/Interpreter.h>
 #include <LibJS/Runtime/BooleanObject.h>
+#include <LibJS/Runtime/GlobalObject.h>
 
 namespace JS {
 
-BooleanObject::BooleanObject(bool value)
+BooleanObject* BooleanObject::create(GlobalObject& global_object, bool value)
+{
+    auto& interpreter = global_object.interpreter();
+    return interpreter.heap().allocate<BooleanObject>(value, *interpreter.boolean_prototype());
+}
+
+BooleanObject::BooleanObject(bool value, Object& prototype)
     : m_value(value)
 {
-    set_prototype(interpreter().boolean_prototype());
+    set_prototype(&prototype);
 }
 
 BooleanObject::~BooleanObject()
diff --git a/Libraries/LibJS/Runtime/BooleanObject.h b/Libraries/LibJS/Runtime/BooleanObject.h
index a27a129f613c..c09a6b0f9dd3 100644
--- a/Libraries/LibJS/Runtime/BooleanObject.h
+++ b/Libraries/LibJS/Runtime/BooleanObject.h
@@ -31,7 +31,9 @@
 namespace JS {
 class BooleanObject : public Object {
 public:
-    explicit BooleanObject(bool);
+    static BooleanObject* create(GlobalObject&, bool);
+
+    BooleanObject(bool, Object& prototype);
     virtual ~BooleanObject() override;
 
     virtual Value value_of() const override
diff --git a/Libraries/LibJS/Runtime/BooleanPrototype.cpp b/Libraries/LibJS/Runtime/BooleanPrototype.cpp
index 84b9639a6093..b4f4f36ded68 100644
--- a/Libraries/LibJS/Runtime/BooleanPrototype.cpp
+++ b/Libraries/LibJS/Runtime/BooleanPrototype.cpp
@@ -32,9 +32,8 @@
 namespace JS {
 
 BooleanPrototype::BooleanPrototype()
-    : BooleanObject(false)
+    : BooleanObject(false, *interpreter().object_prototype())
 {
-    set_prototype(interpreter().object_prototype());
     put_native_function(""toString"", to_string);
     put_native_function(""valueOf"", value_of);
 }
diff --git a/Libraries/LibJS/Runtime/Value.cpp b/Libraries/LibJS/Runtime/Value.cpp
index a5a6adba490e..08fe1d67b0a9 100644
--- a/Libraries/LibJS/Runtime/Value.cpp
+++ b/Libraries/LibJS/Runtime/Value.cpp
@@ -119,7 +119,7 @@ Object* Value::to_object(Heap& heap) const
         return NumberObject::create(heap.interpreter().global_object(), m_value.as_double);
 
     if (is_boolean())
-        return heap.allocate<BooleanObject>(m_value.as_bool);
+        return BooleanObject::create(heap.interpreter().global_object(), m_value.as_bool);
 
     if (is_null() || is_undefined()) {
         heap.interpreter().throw_exception<TypeError>(""ToObject on null or undefined."");"
1d96ecf1488b3c004915b421e2b0b71faa431177,2020-10-16 03:19:53,Andreas Kling,everywhere: Add missing <AK/TemporaryChange.h> includes,False,Add missing <AK/TemporaryChange.h> includes,everywhere,"diff --git a/Applications/Spreadsheet/Cell.cpp b/Applications/Spreadsheet/Cell.cpp
index 0d371f465322..a9dc2e930001 100644
--- a/Applications/Spreadsheet/Cell.cpp
+++ b/Applications/Spreadsheet/Cell.cpp
@@ -27,6 +27,7 @@
 #include ""Cell.h""
 #include ""Spreadsheet.h""
 #include <AK/StringBuilder.h>
+#include <AK/TemporaryChange.h>
 
 namespace Spreadsheet {
 
diff --git a/Applications/Spreadsheet/Spreadsheet.cpp b/Applications/Spreadsheet/Spreadsheet.cpp
index 1bfb2299ece2..e306a0fbc6b1 100644
--- a/Applications/Spreadsheet/Spreadsheet.cpp
+++ b/Applications/Spreadsheet/Spreadsheet.cpp
@@ -31,6 +31,7 @@
 #include <AK/JsonArray.h>
 #include <AK/JsonObject.h>
 #include <AK/JsonParser.h>
+#include <AK/TemporaryChange.h>
 #include <LibCore/File.h>
 #include <LibJS/Parser.h>
 #include <LibJS/Runtime/Function.h>
diff --git a/DevTools/UserspaceEmulator/MallocTracer.cpp b/DevTools/UserspaceEmulator/MallocTracer.cpp
index 2e145b27ed4a..bfafb777a1b5 100644
--- a/DevTools/UserspaceEmulator/MallocTracer.cpp
+++ b/DevTools/UserspaceEmulator/MallocTracer.cpp
@@ -28,6 +28,7 @@
 #include ""Emulator.h""
 #include ""MmapRegion.h""
 #include <AK/LogStream.h>
+#include <AK/TemporaryChange.h>
 #include <string.h>
 
 //#define REACHABLE_DEBUG
diff --git a/Kernel/Syscalls/execve.cpp b/Kernel/Syscalls/execve.cpp
index cb2562b1b7d4..4f08ed5c256f 100644
--- a/Kernel/Syscalls/execve.cpp
+++ b/Kernel/Syscalls/execve.cpp
@@ -25,6 +25,7 @@
  */
 
 #include <AK/ScopeGuard.h>
+#include <AK/TemporaryChange.h>
 #include <Kernel/FileSystem/Custody.h>
 #include <Kernel/FileSystem/FileDescription.h>
 #include <Kernel/Process.h>
diff --git a/Libraries/LibGUI/ShellSyntaxHighlighter.cpp b/Libraries/LibGUI/ShellSyntaxHighlighter.cpp
index 98ff3042ce13..648f9fd291c8 100644
--- a/Libraries/LibGUI/ShellSyntaxHighlighter.cpp
+++ b/Libraries/LibGUI/ShellSyntaxHighlighter.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/TemporaryChange.h>
 #include <LibGUI/ShellSyntaxHighlighter.h>
 #include <LibGUI/TextEditor.h>
 #include <LibGfx/Font.h>
diff --git a/Libraries/LibGUI/TextEditor.cpp b/Libraries/LibGUI/TextEditor.cpp
index da50a641ebea..843aade269ee 100644
--- a/Libraries/LibGUI/TextEditor.cpp
+++ b/Libraries/LibGUI/TextEditor.cpp
@@ -26,6 +26,7 @@
 
 #include <AK/QuickSort.h>
 #include <AK/StringBuilder.h>
+#include <AK/TemporaryChange.h>
 #include <LibCore/Timer.h>
 #include <LibGUI/Action.h>
 #include <LibGUI/Clipboard.h>
diff --git a/Libraries/LibJS/Heap/Heap.cpp b/Libraries/LibJS/Heap/Heap.cpp
index 4f6b7436aa02..c6e3756a992f 100644
--- a/Libraries/LibJS/Heap/Heap.cpp
+++ b/Libraries/LibJS/Heap/Heap.cpp
@@ -26,6 +26,7 @@
 
 #include <AK/Badge.h>
 #include <AK/HashTable.h>
+#include <AK/TemporaryChange.h>
 #include <LibCore/ElapsedTimer.h>
 #include <LibJS/Heap/Allocator.h>
 #include <LibJS/Heap/Handle.h>
diff --git a/Libraries/LibJS/Parser.cpp b/Libraries/LibJS/Parser.cpp
index 7a890df61439..a90c6356476b 100644
--- a/Libraries/LibJS/Parser.cpp
+++ b/Libraries/LibJS/Parser.cpp
@@ -28,6 +28,7 @@
 #include ""Parser.h""
 #include <AK/ScopeGuard.h>
 #include <AK/StdLibExtras.h>
+#include <AK/TemporaryChange.h>
 
 namespace JS {
 
diff --git a/Libraries/LibJS/Runtime/Object.cpp b/Libraries/LibJS/Runtime/Object.cpp
index 72ad7149dc4f..66bff30be030 100644
--- a/Libraries/LibJS/Runtime/Object.cpp
+++ b/Libraries/LibJS/Runtime/Object.cpp
@@ -25,6 +25,7 @@
  */
 
 #include <AK/String.h>
+#include <AK/TemporaryChange.h>
 #include <LibJS/Heap/Heap.h>
 #include <LibJS/Runtime/Accessor.h>
 #include <LibJS/Runtime/Array.h>
diff --git a/Shell/Shell.cpp b/Shell/Shell.cpp
index ef2a0b2bf98c..3d6f90e63eee 100644
--- a/Shell/Shell.cpp
+++ b/Shell/Shell.cpp
@@ -31,6 +31,7 @@
 #include <AK/LexicalPath.h>
 #include <AK/ScopeGuard.h>
 #include <AK/StringBuilder.h>
+#include <AK/TemporaryChange.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/DirIterator.h>
 #include <LibCore/Event.h>"
e91b2b8f1bb7bb590fbe5b88f8a3404702f9b73d,2019-12-02 20:25:14,Andreas Kling,windowserver: Mark clients as misbehaving when they send invalid data,False,Mark clients as misbehaving when they send invalid data,windowserver,"diff --git a/Libraries/LibIPC/IClientConnection.h b/Libraries/LibIPC/IClientConnection.h
index b45de739a8c9..7e816b5dcdb7 100644
--- a/Libraries/LibIPC/IClientConnection.h
+++ b/Libraries/LibIPC/IClientConnection.h
@@ -128,6 +128,12 @@ class IClientConnection : public CObject {
         shutdown();
     }
 
+    void did_misbehave(const char* message)
+    {
+        dbg() << ""Connection{"" << this << ""} (id="" << m_client_id << "", pid="" << m_client_pid << "") misbehaved ("" << message << ""), disconnecting."";
+        shutdown();
+    }
+
     void shutdown()
     {
         m_socket->close();
diff --git a/Servers/WindowServer/WSClientConnection.cpp b/Servers/WindowServer/WSClientConnection.cpp
index c798dcc6ab0e..6b67f1217c04 100644
--- a/Servers/WindowServer/WSClientConnection.cpp
+++ b/Servers/WindowServer/WSClientConnection.cpp
@@ -59,12 +59,6 @@ void WSClientConnection::die()
     s_connections->remove(client_id());
 }
 
-void WSClientConnection::post_error(const String& error_message)
-{
-    dbgprintf(""WSClientConnection::post_error: client_id=%d: %s\n"", client_id(), error_message.characters());
-    did_misbehave();
-}
-
 void WSClientConnection::notify_about_new_screen_rect(const Rect& rect)
 {
     post_message(WindowClient::ScreenRectChanged(rect));
@@ -88,8 +82,8 @@ OwnPtr<WindowServer::DestroyMenubarResponse> WSClientConnection::handle(const Wi
     int menubar_id = message.menubar_id();
     auto it = m_menubars.find(menubar_id);
     if (it == m_menubars.end()) {
-        post_error(""WSAPIDestroyMenubarRequest: Bad menubar ID"");
-        return make<WindowServer::DestroyMenubarResponse>();
+        did_misbehave(""DestroyMenubar: Bad menubar ID"");
+        return nullptr;
     }
     auto& menubar = *(*it).value;
     WSWindowManager::the().close_menubar(menubar);
@@ -111,8 +105,8 @@ OwnPtr<WindowServer::DestroyMenuResponse> WSClientConnection::handle(const Windo
     int menu_id = message.menu_id();
     auto it = m_menus.find(menu_id);
     if (it == m_menus.end()) {
-        post_error(""WSAPIDestroyMenuRequest: Bad menu ID"");
-        return make<WindowServer::DestroyMenuResponse>();
+        did_misbehave(""DestroyMenu: Bad menu ID"");
+        return nullptr;
     }
     auto& menu = *(*it).value;
     menu.close();
@@ -126,8 +120,8 @@ OwnPtr<WindowServer::SetApplicationMenubarResponse> WSClientConnection::handle(c
     int menubar_id = message.menubar_id();
     auto it = m_menubars.find(menubar_id);
     if (it == m_menubars.end()) {
-        post_error(""WSAPISetApplicationMenubarRequest: Bad menubar ID"");
-        return make<WindowServer::SetApplicationMenubarResponse>();
+        did_misbehave(""SetApplicationMenubar: Bad menubar ID"");
+        return nullptr;
     }
     auto& menubar = *(*it).value;
     m_app_menubar = menubar.make_weak_ptr();
@@ -142,12 +136,12 @@ OwnPtr<WindowServer::AddMenuToMenubarResponse> WSClientConnection::handle(const
     auto it = m_menubars.find(menubar_id);
     auto jt = m_menus.find(menu_id);
     if (it == m_menubars.end()) {
-        post_error(""WSAPIAddMenuToMenubarRequest: Bad menubar ID"");
-        return make<WindowServer::AddMenuToMenubarResponse>();
+        did_misbehave(""AddMenuToMenubar: Bad menubar ID"");
+        return nullptr;
     }
     if (jt == m_menus.end()) {
-        post_error(""WSAPIAddMenuToMenubarRequest: Bad menu ID"");
-        return make<WindowServer::AddMenuToMenubarResponse>();
+        did_misbehave(""AddMenuToMenubar: Bad menu ID"");
+        return nullptr;
     }
     auto& menubar = *(*it).value;
     auto& menu = *(*jt).value;
@@ -161,17 +155,15 @@ OwnPtr<WindowServer::AddMenuItemResponse> WSClientConnection::handle(const Windo
     unsigned identifier = message.identifier();
     auto it = m_menus.find(menu_id);
     if (it == m_menus.end()) {
-        dbg() << ""WSAPIAddMenuItemRequest: Bad menu ID: "" << menu_id;
-        return make<WindowServer::AddMenuItemResponse>();
+        dbg() << ""AddMenuItem: Bad menu ID: "" << menu_id;
+        return nullptr;
     }
     auto& menu = *(*it).value;
     auto menu_item = make<WSMenuItem>(menu, identifier, message.text(), message.shortcut(), message.enabled(), message.checkable(), message.checked());
     if (message.icon_buffer_id() != -1) {
         auto icon_buffer = SharedBuffer::create_from_shared_buffer_id(message.icon_buffer_id());
-        if (!icon_buffer) {
-            did_misbehave();
-            return make<WindowServer::AddMenuItemResponse>();
-        }
+        if (!icon_buffer)
+            return nullptr;
         // FIXME: Verify that the icon buffer can accomodate a 16x16 bitmap view.
         auto shared_icon = GraphicsBitmap::create_with_shared_buffer(GraphicsBitmap::Format::RGBA32, icon_buffer.release_nonnull(), { 16, 16 });
         menu_item->set_icon(shared_icon);
@@ -187,8 +179,8 @@ OwnPtr<WindowServer::PopupMenuResponse> WSClientConnection::handle(const WindowS
     auto position = message.screen_position();
     auto it = m_menus.find(menu_id);
     if (it == m_menus.end()) {
-        post_error(""WSAPIPopupMenuRequest: Bad menu ID"");
-        return make<WindowServer::PopupMenuResponse>();
+        did_misbehave(""PopupMenu: Bad menu ID"");
+        return nullptr;
     }
     auto& menu = *(*it).value;
     menu.popup(position);
@@ -200,8 +192,8 @@ OwnPtr<WindowServer::DismissMenuResponse> WSClientConnection::handle(const Windo
     int menu_id = message.menu_id();
     auto it = m_menus.find(menu_id);
     if (it == m_menus.end()) {
-        post_error(""WSAPIDismissMenuRequest: Bad menu ID"");
-        return make<WindowServer::DismissMenuResponse>();
+        did_misbehave(""DismissMenu: Bad menu ID"");
+        return nullptr;
     }
     auto& menu = *(*it).value;
     menu.close();
@@ -213,14 +205,14 @@ OwnPtr<WindowServer::UpdateMenuItemResponse> WSClientConnection::handle(const Wi
     int menu_id = message.menu_id();
     auto it = m_menus.find(menu_id);
     if (it == m_menus.end()) {
-        post_error(""WSAPIUpdateMenuItemRequest: Bad menu ID"");
-        return make<WindowServer::UpdateMenuItemResponse>();
+        did_misbehave(""UpdateMenuItem: Bad menu ID"");
+        return nullptr;
     }
     auto& menu = *(*it).value;
     auto* menu_item = menu.item_with_identifier(message.identifier());
     if (!menu_item) {
-        post_error(""WSAPIUpdateMenuItemRequest: Bad menu item identifier"");
-        return make<WindowServer::UpdateMenuItemResponse>();
+        did_misbehave(""UpdateMenuItem: Bad menu item identifier"");
+        return nullptr;
     }
     menu_item->set_text(message.text());
     menu_item->set_shortcut_text(message.shortcut());
@@ -236,8 +228,8 @@ OwnPtr<WindowServer::AddMenuSeparatorResponse> WSClientConnection::handle(const
     int menu_id = message.menu_id();
     auto it = m_menus.find(menu_id);
     if (it == m_menus.end()) {
-        post_error(""WSAPIAddMenuSeparatorRequest: Bad menu ID"");
-        return make<WindowServer::AddMenuSeparatorResponse>();
+        did_misbehave(""AddMenuSeparator: Bad menu ID"");
+        return nullptr;
     }
     auto& menu = *(*it).value;
     menu.add_item(make<WSMenuItem>(menu, WSMenuItem::Separator));
@@ -248,8 +240,8 @@ OwnPtr<WindowServer::MoveWindowToFrontResponse> WSClientConnection::handle(const
 {
     auto it = m_windows.find(message.window_id());
     if (it == m_windows.end()) {
-        post_error(""WSAPIMoveWindowToFrontRequest: Bad window ID"");
-        return make<WindowServer::MoveWindowToFrontResponse>();
+        did_misbehave(""MoveWindowToFront: Bad window ID"");
+        return nullptr;
     }
     WSWindowManager::the().move_to_front_and_make_active(*(*it).value);
     return make<WindowServer::MoveWindowToFrontResponse>();
@@ -259,8 +251,8 @@ OwnPtr<WindowServer::SetFullscreenResponse> WSClientConnection::handle(const Win
 {
     auto it = m_windows.find(message.window_id());
     if (it == m_windows.end()) {
-        post_error(""WSAPISetFullscreenRequest: Bad window ID"");
-        return make<WindowServer::SetFullscreenResponse>();
+        did_misbehave(""SetFullscreen: Bad window ID"");
+        return nullptr;
     }
     it->value->set_fullscreen(message.fullscreen());
     return make<WindowServer::SetFullscreenResponse>();
@@ -270,8 +262,8 @@ OwnPtr<WindowServer::SetWindowOpacityResponse> WSClientConnection::handle(const
 {
     auto it = m_windows.find(message.window_id());
     if (it == m_windows.end()) {
-        post_error(""WSAPISetWindowOpacityRequest: Bad window ID"");
-        return make<WindowServer::SetWindowOpacityResponse>();
+        did_misbehave(""SetWindowOpacity: Bad window ID"");
+        return nullptr;
     }
     it->value->set_opacity(message.opacity());
     return make<WindowServer::SetWindowOpacityResponse>();
@@ -299,8 +291,8 @@ OwnPtr<WindowServer::SetWindowTitleResponse> WSClientConnection::handle(const Wi
 {
     auto it = m_windows.find(message.window_id());
     if (it == m_windows.end()) {
-        post_error(""WSAPISetWindowTitleRequest: Bad window ID"");
-        return make<WindowServer::SetWindowTitleResponse>();
+        did_misbehave(""SetWindowTitle: Bad window ID"");
+        return nullptr;
     }
     it->value->set_title(message.title());
     return make<WindowServer::SetWindowTitleResponse>();
@@ -310,8 +302,8 @@ OwnPtr<WindowServer::GetWindowTitleResponse> WSClientConnection::handle(const Wi
 {
     auto it = m_windows.find(message.window_id());
     if (it == m_windows.end()) {
-        post_error(""WSAPIGetWindowTitleRequest: Bad window ID"");
-        return make<WindowServer::GetWindowTitleResponse>("""");
+        did_misbehave(""GetWindowTitle: Bad window ID"");
+        return nullptr;
     }
     return make<WindowServer::GetWindowTitleResponse>(it->value->title());
 }
@@ -320,8 +312,8 @@ OwnPtr<WindowServer::SetWindowIconBitmapResponse> WSClientConnection::handle(con
 {
     auto it = m_windows.find(message.window_id());
     if (it == m_windows.end()) {
-        post_error(""WSAPISetWindowIconBitmapRequest: Bad window ID"");
-        return make<WindowServer::SetWindowIconBitmapResponse>();
+        did_misbehave(""SetWindowIconBitmap: Bad window ID"");
+        return nullptr;
     }
     auto& window = *(*it).value;
 
@@ -343,13 +335,13 @@ OwnPtr<WindowServer::SetWindowRectResponse> WSClientConnection::handle(const Win
     int window_id = message.window_id();
     auto it = m_windows.find(window_id);
     if (it == m_windows.end()) {
-        post_error(""WSAPISetWindowRectRequest: Bad window ID"");
-        return make<WindowServer::SetWindowRectResponse>();
+        did_misbehave(""SetWindowRect: Bad window ID"");
+        return nullptr;
     }
     auto& window = *(*it).value;
     if (window.is_fullscreen()) {
-        dbgprintf(""WSClientConnection: Ignoring SetWindowRect request for fullscreen window\n"");
-        return make<WindowServer::SetWindowRectResponse>();
+        dbg() << ""WSClientConnection: Ignoring SetWindowRect request for fullscreen window"";
+        return nullptr;
     }
     window.set_rect(message.rect());
     window.request_update(message.rect());
@@ -361,8 +353,8 @@ OwnPtr<WindowServer::GetWindowRectResponse> WSClientConnection::handle(const Win
     int window_id = message.window_id();
     auto it = m_windows.find(window_id);
     if (it == m_windows.end()) {
-        post_error(""WSAPIGetWindowRectRequest: Bad window ID"");
-        return make<WindowServer::GetWindowRectResponse>(Rect());
+        did_misbehave(""GetWindowRect: Bad window ID"");
+        return nullptr;
     }
     return make<WindowServer::GetWindowRectResponse>(it->value->rect());
 }
@@ -371,8 +363,8 @@ OwnPtr<WindowServer::SetClipboardContentsResponse> WSClientConnection::handle(co
 {
     auto shared_buffer = SharedBuffer::create_from_shared_buffer_id(message.shared_buffer_id());
     if (!shared_buffer) {
-        post_error(""WSAPISetClipboardContentsRequest: Bad shared buffer ID"");
-        return make<WindowServer::SetClipboardContentsResponse>();
+        did_misbehave(""SetClipboardContents: Bad shared buffer ID"");
+        return nullptr;
     }
     WSClipboard::the().set_data(*shared_buffer, message.content_size(), message.content_type());
     return make<WindowServer::SetClipboardContentsResponse>();
@@ -423,8 +415,8 @@ OwnPtr<WindowServer::DestroyWindowResponse> WSClientConnection::handle(const Win
 {
     auto it = m_windows.find(message.window_id());
     if (it == m_windows.end()) {
-        post_error(""WSAPIDestroyWindowRequest: Bad window ID"");
-        return make<WindowServer::DestroyWindowResponse>();
+        did_misbehave(""DestroyWindow: Bad window ID"");
+        return nullptr;
     }
     auto& window = *(*it).value;
     WSWindowManager::the().invalidate(window);
@@ -453,7 +445,7 @@ void WSClientConnection::handle(const WindowServer::InvalidateRect& message)
 {
     auto it = m_windows.find(message.window_id());
     if (it == m_windows.end()) {
-        post_error(""WSAPIInvalidateRectRequest: Bad window ID"");
+        did_misbehave(""InvalidateRect: Bad window ID"");
         return;
     }
     auto& window = *(*it).value;
@@ -466,7 +458,7 @@ void WSClientConnection::handle(const WindowServer::DidFinishPainting& message)
     int window_id = message.window_id();
     auto it = m_windows.find(window_id);
     if (it == m_windows.end()) {
-        post_error(""WSAPIDidFinishPaintingNotification: Bad window ID"");
+        did_misbehave(""DidFinishPainting: Bad window ID"");
         return;
     }
     auto& window = *(*it).value;
@@ -481,8 +473,8 @@ OwnPtr<WindowServer::SetWindowBackingStoreResponse> WSClientConnection::handle(c
     int window_id = message.window_id();
     auto it = m_windows.find(window_id);
     if (it == m_windows.end()) {
-        post_error(""WSAPISetWindowBackingStoreRequest: Bad window ID"");
-        return make<WindowServer::SetWindowBackingStoreResponse>();
+        did_misbehave(""SetWindowBackingStore: Bad window ID"");
+        return nullptr;
     }
     auto& window = *(*it).value;
     if (window.last_backing_store() && window.last_backing_store()->shared_buffer_id() == message.shared_buffer_id()) {
@@ -509,8 +501,8 @@ OwnPtr<WindowServer::SetGlobalCursorTrackingResponse> WSClientConnection::handle
     int window_id = message.window_id();
     auto it = m_windows.find(window_id);
     if (it == m_windows.end()) {
-        post_error(""WSAPISetGlobalCursorTrackingRequest: Bad window ID"");
-        return make<WindowServer::SetGlobalCursorTrackingResponse>();
+        did_misbehave(""SetGlobalCursorTracking: Bad window ID"");
+        return nullptr;
     }
     it->value->set_global_cursor_tracking_enabled(message.enabled());
     return make<WindowServer::SetGlobalCursorTrackingResponse>();
@@ -520,8 +512,8 @@ OwnPtr<WindowServer::SetWindowOverrideCursorResponse> WSClientConnection::handle
 {
     auto it = m_windows.find(message.window_id());
     if (it == m_windows.end()) {
-        post_error(""WSAPISetWindowOverrideCursorRequest: Bad window ID"");
-        return make<WindowServer::SetWindowOverrideCursorResponse>();
+        did_misbehave(""SetWindowOverrideCursor: Bad window ID"");
+        return nullptr;
     }
     auto& window = *(*it).value;
     window.set_override_cursor(WSCursor::create((WSStandardCursor)message.cursor_type()));
@@ -532,8 +524,8 @@ OwnPtr<WindowServer::SetWindowHasAlphaChannelResponse> WSClientConnection::handl
 {
     auto it = m_windows.find(message.window_id());
     if (it == m_windows.end()) {
-        post_error(""WSAPISetWindowHasAlphaChannelRequest: Bad window ID"");
-        return make<WindowServer::SetWindowHasAlphaChannelResponse>();
+        did_misbehave(""SetWindowHasAlphaChannel: Bad window ID"");
+        return nullptr;
     }
     it->value->set_has_alpha_channel(message.has_alpha_channel());
     return make<WindowServer::SetWindowHasAlphaChannelResponse>();
@@ -543,12 +535,12 @@ void WSClientConnection::handle(const WindowServer::WM_SetActiveWindow& message)
 {
     auto* client = WSClientConnection::from_client_id(message.client_id());
     if (!client) {
-        post_error(""WSWMAPISetActiveWindowRequest: Bad client ID"");
+        did_misbehave(""WM_SetActiveWindow: Bad client ID"");
         return;
     }
     auto it = client->m_windows.find(message.window_id());
     if (it == client->m_windows.end()) {
-        post_error(""WSWMAPISetActiveWindowRequest: Bad window ID"");
+        did_misbehave(""WM_SetActiveWindow: Bad window ID"");
         return;
     }
     auto& window = *(*it).value;
@@ -560,12 +552,12 @@ void WSClientConnection::handle(const WindowServer::WM_PopupWindowMenu& message)
 {
     auto* client = WSClientConnection::from_client_id(message.client_id());
     if (!client) {
-        post_error(""WSWMAPIPopupWindowMenuRequest: Bad client ID"");
+        did_misbehave(""WM_PopupWindowMenu: Bad client ID"");
         return;
     }
     auto it = client->m_windows.find(message.window_id());
     if (it == client->m_windows.end()) {
-        post_error(""WSWMAPIPopupWindowMenuRequest: Bad window ID"");
+        did_misbehave(""WM_PopupWindowMenu: Bad window ID"");
         return;
     }
     auto& window = *(*it).value;
@@ -576,12 +568,12 @@ void WSClientConnection::handle(const WindowServer::WM_StartWindowResize& reques
 {
     auto* client = WSClientConnection::from_client_id(request.client_id());
     if (!client) {
-        post_error(""WSWMAPIStartWindowResizeRequest: Bad client ID"");
+        did_misbehave(""WM_StartWindowResize: Bad client ID"");
         return;
     }
     auto it = client->m_windows.find(request.window_id());
     if (it == client->m_windows.end()) {
-        post_error(""WSWMAPIStartWindowResizeRequest: Bad window ID"");
+        did_misbehave(""WM_StartWindowResize: Bad window ID"");
         return;
     }
     auto& window = *(*it).value;
@@ -594,12 +586,12 @@ void WSClientConnection::handle(const WindowServer::WM_SetWindowMinimized& messa
 {
     auto* client = WSClientConnection::from_client_id(message.client_id());
     if (!client) {
-        post_error(""WSWMAPISetWindowMinimizedRequest: Bad client ID"");
+        did_misbehave(""WM_SetWindowMinimized: Bad client ID"");
         return;
     }
     auto it = client->m_windows.find(message.window_id());
     if (it == client->m_windows.end()) {
-        post_error(""WSWMAPISetWindowMinimizedRequest: Bad window ID"");
+        did_misbehave(""WM_SetWindowMinimized: Bad window ID"");
         return;
     }
     auto& window = *(*it).value;
diff --git a/Servers/WindowServer/WSClientConnection.h b/Servers/WindowServer/WSClientConnection.h
index 8c6444291fdd..f0898ac6ad78 100644
--- a/Servers/WindowServer/WSClientConnection.h
+++ b/Servers/WindowServer/WSClientConnection.h
@@ -87,8 +87,6 @@ class WSClientConnection final
     virtual OwnPtr<WindowServer::DismissMenuResponse> handle(const WindowServer::DismissMenu&) override;
     virtual OwnPtr<WindowServer::SetWindowIconBitmapResponse> handle(const WindowServer::SetWindowIconBitmap&) override;
 
-    void post_error(const String&);
-
     HashMap<int, NonnullRefPtr<WSWindow>> m_windows;
     HashMap<int, NonnullOwnPtr<WSMenuBar>> m_menubars;
     HashMap<int, NonnullRefPtr<WSMenu>> m_menus;"
c56c8c8953690bd33019c11f85e0c54093028dae,2020-03-31 17:25:28,Andreas Kling,windowserver: Remove applets from AppletManager on client disconnection,False,Remove applets from AppletManager on client disconnection,windowserver,"diff --git a/Servers/WindowServer/AppletManager.cpp b/Servers/WindowServer/AppletManager.cpp
index 382222a1d70d..16cdf4c9da0c 100644
--- a/Servers/WindowServer/AppletManager.cpp
+++ b/Servers/WindowServer/AppletManager.cpp
@@ -71,6 +71,11 @@ void AppletManager::add_applet(Window& applet)
 {
     m_applets.append(applet.make_weak_ptr());
 
+    // Prune any dead weak pointers from the applet list.
+    m_applets.remove_all_matching([](auto& entry) {
+        return entry.is_null();
+    });
+
     quick_sort(m_applets, [](auto& a, auto& b) {
         auto index_a = order_vector.find_first_index(a->title());
         auto index_b = order_vector.find_first_index(b->title());
diff --git a/Servers/WindowServer/ClientConnection.cpp b/Servers/WindowServer/ClientConnection.cpp
index 4b0449d77133..a94b9ea4ac67 100644
--- a/Servers/WindowServer/ClientConnection.cpp
+++ b/Servers/WindowServer/ClientConnection.cpp
@@ -81,8 +81,11 @@ ClientConnection::~ClientConnection()
 {
     MenuManager::the().close_all_menus_from_client({}, *this);
     auto windows = move(m_windows);
-    for (auto& window : windows)
+    for (auto& window : windows) {
         window.value->detach_client({});
+        if (window.value->type() == WindowType::MenuApplet)
+            AppletManager::the().remove_applet(window.value);
+    }
 }
 
 void ClientConnection::die()"
7d8940961817d67c9f5ea5e9b644814a292e0451,2022-01-30 20:51:59,Andreas Kling,kernel: Don't dispatch signals in Thread::block_impl(),False,Don't dispatch signals in Thread::block_impl(),kernel,"diff --git a/Kernel/Thread.cpp b/Kernel/Thread.cpp
index bd668c1731f9..e3fe40efe007 100644
--- a/Kernel/Thread.cpp
+++ b/Kernel/Thread.cpp
@@ -245,12 +245,6 @@ Thread::BlockResult Thread::block_impl(BlockTimeout const& timeout, Blocker& blo
         break;
     }
 
-    if (blocker.was_interrupted_by_signal()) {
-        SpinlockLocker scheduler_lock(g_scheduler_lock);
-        SpinlockLocker lock(m_lock);
-        dispatch_one_pending_signal();
-    }
-
     // Notify the blocker that we are no longer blocking. It may need
     // to clean up now while we're still holding m_lock
     auto result = blocker.end_blocking({}, did_timeout); // calls was_unblocked internally"
69b5d7c0e6041c6af8fb88657834d57143ddb111,2024-04-04 02:44:01,Timothy Flynn,libweb: Avoid UAF when encoding a fetch request body via URLSearchParams,False,Avoid UAF when encoding a fetch request body via URLSearchParams,libweb,"diff --git a/Tests/LibWeb/Text/expected/fetch-request-url-search-params.txt b/Tests/LibWeb/Text/expected/fetch-request-url-search-params.txt
new file mode 100644
index 000000000000..5b4f52faeaf5
--- /dev/null
+++ b/Tests/LibWeb/Text/expected/fetch-request-url-search-params.txt
@@ -0,0 +1 @@
+username=buggie&password=hunter2
diff --git a/Tests/LibWeb/Text/input/fetch-request-url-search-params.html b/Tests/LibWeb/Text/input/fetch-request-url-search-params.html
new file mode 100644
index 000000000000..675035062398
--- /dev/null
+++ b/Tests/LibWeb/Text/input/fetch-request-url-search-params.html
@@ -0,0 +1,16 @@
+<script src=""include.js""></script>
+<script type=""text/javascript"">
+    asyncTest(async done => {
+        const body = new URLSearchParams();
+        body.append(""username"", ""buggie"");
+        body.append(""password"", ""hunter2"");
+
+        const request = new Request(""fetch-url-search-params.html"", {
+            method: ""POST"",
+            body: body,
+        });
+
+        println(await request.text());
+        done();
+    });
+</script>
diff --git a/Userland/Libraries/LibWeb/Fetch/BodyInit.cpp b/Userland/Libraries/LibWeb/Fetch/BodyInit.cpp
index f9fb1acaac63..77cb4186dddf 100644
--- a/Userland/Libraries/LibWeb/Fetch/BodyInit.cpp
+++ b/Userland/Libraries/LibWeb/Fetch/BodyInit.cpp
@@ -105,8 +105,8 @@ WebIDL::ExceptionOr<Infrastructure::BodyWithType> extract_body(JS::Realm& realm,
         },
         [&](JS::Handle<DOMURL::URLSearchParams> const& url_search_params) -> WebIDL::ExceptionOr<void> {
             // Set source to the result of running the application/x-www-form-urlencoded serializer with object’s list.
-            auto search_params_bytes = TRY(url_search_params->to_string()).bytes();
-            source = TRY_OR_THROW_OOM(vm, ByteBuffer::copy(search_params_bytes));
+            auto search_params_string = TRY(url_search_params->to_string());
+            source = TRY_OR_THROW_OOM(vm, ByteBuffer::copy(search_params_string.bytes()));
             // Set type to `application/x-www-form-urlencoded;charset=UTF-8`.
             type = TRY_OR_THROW_OOM(vm, ByteBuffer::copy(""application/x-www-form-urlencoded;charset=UTF-8""sv.bytes()));
             return {};"
183fa9821474d662e75790b5b44599dc38a732c6,2020-05-05 01:14:50,Sergey Bugaev,libmarkdown: Support multi-line list items,False,Support multi-line list items,libmarkdown,"diff --git a/Libraries/LibMarkdown/List.cpp b/Libraries/LibMarkdown/List.cpp
index bf3bd14f8814..aab24d0c312c 100644
--- a/Libraries/LibMarkdown/List.cpp
+++ b/Libraries/LibMarkdown/List.cpp
@@ -69,6 +69,20 @@ String List::render_for_terminal() const
 bool List::parse(Vector<StringView>::ConstIterator& lines)
 {
     bool first = true;
+    size_t offset = 0;
+    StringBuilder item_builder;
+    auto flush_item_if_needed = [&] {
+        if (first)
+            return;
+
+        Text text;
+        bool success = text.parse(item_builder.string_view());
+        ASSERT(success);
+        m_items.append(move(text));
+
+        item_builder.clear();
+    };
+
     while (true) {
         if (lines.is_end())
             break;
@@ -77,12 +91,12 @@ bool List::parse(Vector<StringView>::ConstIterator& lines)
             break;
 
         bool appears_unordered = false;
-        size_t offset = 0;
-        if (line.length() > 2)
+        if (line.length() > 2) {
             if (line[1] == ' ' && (line[0] == '*' || line[0] == '-')) {
                 appears_unordered = true;
                 offset = 2;
             }
+        }
 
         bool appears_ordered = false;
         for (size_t i = 0; i < 10 && i < line.length(); i++) {
@@ -98,21 +112,35 @@ bool List::parse(Vector<StringView>::ConstIterator& lines)
         }
 
         ASSERT(!(appears_unordered && appears_ordered));
-        if (!appears_unordered && !appears_ordered)
-            return false;
-        if (first)
-            m_is_ordered = appears_ordered;
-        else if (m_is_ordered != appears_ordered)
-            return false;
+
+        if (appears_unordered || appears_ordered) {
+            if (first)
+                m_is_ordered = appears_ordered;
+            else if (m_is_ordered != appears_ordered)
+                return false;
+
+            flush_item_if_needed();
+
+            while (offset + 1 < line.length() && line[offset + 1] == ' ')
+                offset++;
+
+        } else {
+            if (first)
+                return false;
+            for (size_t i = 0; i < offset; i++) {
+                if (line[i] != ' ')
+                    return false;
+            }
+        }
 
         first = false;
-        Text text;
-        bool success = text.parse(line.substring_view(offset, line.length() - offset));
-        ASSERT(success);
-        m_items.append(move(text));
+        if (!item_builder.is_empty())
+            item_builder.append(' ');
+        item_builder.append(line.substring_view(offset, line.length() - offset));
         ++lines;
     }
 
+    flush_item_if_needed();
     return !first;
 }"
e5ddb76a67b96541596af6f742978333f6ce4505,2020-06-02 01:39:09,Andreas Kling,"libweb: Support ""td"" and ""th"" start tags during ""in table body""",False,"Support ""td"" and ""th"" start tags during ""in table body""",libweb,"diff --git a/Libraries/LibWeb/Parser/HTMLDocumentParser.cpp b/Libraries/LibWeb/Parser/HTMLDocumentParser.cpp
index cd25d9d47057..4acbbaa2b7ea 100644
--- a/Libraries/LibWeb/Parser/HTMLDocumentParser.cpp
+++ b/Libraries/LibWeb/Parser/HTMLDocumentParser.cpp
@@ -1596,7 +1596,17 @@ void HTMLDocumentParser::handle_in_table_body(HTMLToken& token)
     }
 
     if (token.is_start_tag() && token.tag_name().is_one_of(""th"", ""td"")) {
-        TODO();
+        PARSE_ERROR();
+        clear_the_stack_back_to_a_table_body_context();
+
+        HTMLToken fake_tr_token;
+        fake_tr_token.m_type = HTMLToken::Type::StartTag;
+        fake_tr_token.m_tag.tag_name.append(""tr"");
+        insert_html_element(fake_tr_token);
+
+        m_insertion_mode = InsertionMode::InRow;
+        process_using_the_rules_for(m_insertion_mode, token);
+        return;
     }
 
     if (token.is_end_tag() && token.tag_name().is_one_of(""tbody"", ""tfoot"", ""thead"")) {"
167b54d03d612c773a47f2a2b3b88c92265d1b3b,2023-12-03 18:41:23,Ali Mohammad Pur,ports: Make the LLVM port install its ocaml bindings somewhere else,False,Make the LLVM port install its ocaml bindings somewhere else,ports,"diff --git a/Ports/llvm/package.sh b/Ports/llvm/package.sh
index eb09d6a5d55a..5c9eace7094c 100755
--- a/Ports/llvm/package.sh
+++ b/Ports/llvm/package.sh
@@ -36,15 +36,15 @@ configure() {
     cmake ${workdir}/llvm \
         -G Ninja \
         -B llvm-build ""${configopts[@]}"" \
-        -DCMAKE_BUILD_TYPE=MinSizeRel \
-        -DCMAKE_FIND_ROOT_PATH=""$SERENITY_BUILD_DIR""/Root \
-        -DCROSS_TOOLCHAIN_FLAGS_NATIVE=""-DCMAKE_C_COMPILER=$CC;-DCMAKE_CXX_COMPILER=$CXX"" \
         -DCLANG_DEFAULT_CXX_STDLIB=$stdlib \
         -DCLANG_DEFAULT_UNWINDLIB=$unwindlib \
+        -DCMAKE_BUILD_TYPE=MinSizeRel \
+        -DCMAKE_FIND_ROOT_PATH=""$SERENITY_BUILD_DIR""/Root \
         -DCOMPILER_RT_BUILD_CRT=ON \
         -DCOMPILER_RT_BUILD_ORC=OFF \
         -DCOMPILER_RT_EXCLUDE_ATOMIC_BUILTIN=$exclude_atomic_builtin \
         -DCOMPILER_RT_OS_DIR=serenity \
+        -DCROSS_TOOLCHAIN_FLAGS_NATIVE=""-DCMAKE_C_COMPILER=$CC;-DCMAKE_CXX_COMPILER=$CXX"" \
         -DHAVE_LIBRT=OFF \
         -DLLVM_DEFAULT_TARGET_TRIPLE=$SERENITY_ARCH-pc-serenity \
         -DLLVM_ENABLE_PROJECTS=""clang;lld;compiler-rt"" \
@@ -52,6 +52,7 @@ configure() {
         -DLLVM_INCLUDE_BENCHMARKS=OFF \
         -DLLVM_INCLUDE_TESTS=OFF \
         -DLLVM_INSTALL_TOOLCHAIN_ONLY=ON \
+        -DLLVM_OCAML_INSTALL_PATH=""${SERENITY_INSTALL_ROOT}/usr/local/ocaml"" \
         -DLLVM_PTHREAD_LIB=pthread \
         -DLLVM_TARGETS_TO_BUILD=X86
 }"
d0808e5d9469b2fe28af948b1d6b8f2ce5239ff8,2023-06-30 19:09:36,Sam Atkins,libweb: Correct `@font-face` debug log messages,False,Correct `@font-face` debug log messages,libweb,"diff --git a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
index 7fd96d046bf9..4e2e738cac30 100644
--- a/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
+++ b/Userland/Libraries/LibWeb/CSS/Parser/Parser.cpp
@@ -6694,7 +6694,7 @@ CSSRule* Parser::parse_font_face_rule(TokenStream<ComponentValue>& tokens)
 
     for (auto& declaration_or_at_rule : declarations_and_at_rules) {
         if (declaration_or_at_rule.is_at_rule()) {
-            dbgln_if(CSS_PARSER_DEBUG, ""CSSParser: CSS at-rules are not allowed in @font-family; discarding."");
+            dbgln_if(CSS_PARSER_DEBUG, ""CSSParser: CSS at-rules are not allowed in @font-face; discarding."");
             continue;
         }
 
@@ -6787,7 +6787,7 @@ CSSRule* Parser::parse_font_face_rule(TokenStream<ComponentValue>& tokens)
             continue;
         }
 
-        dbgln_if(CSS_PARSER_DEBUG, ""CSSParser: Unrecognized descriptor '{}' in @font-family; discarding."", declaration.name());
+        dbgln_if(CSS_PARSER_DEBUG, ""CSSParser: Unrecognized descriptor '{}' in @font-face; discarding."", declaration.name());
     }
 
     if (!font_family.has_value()) {"
91a609d945456565304b62862946131dd0dba100,2019-09-10 18:21:55,MinusGix,shell: Add support for special parameter that expands to return-code of last program executed,False,Add support for special parameter that expands to return-code of last program executed,shell,"diff --git a/Shell/GlobalState.h b/Shell/GlobalState.h
index 1ca4a981e353..d87d798356db 100644
--- a/Shell/GlobalState.h
+++ b/Shell/GlobalState.h
@@ -14,6 +14,7 @@ struct GlobalState {
     struct termios termios;
     bool was_interrupted { false };
     bool was_resized { false };
+    int last_return_code { 0 };
 };
 
 extern GlobalState g;
diff --git a/Shell/main.cpp b/Shell/main.cpp
index 24d66ff38f7c..1ee0003b5513 100644
--- a/Shell/main.cpp
+++ b/Shell/main.cpp
@@ -307,6 +307,8 @@ static Vector<String> expand_parameters(const StringView& param)
         return { param };
 
     String variable_name = String(param.substring_view(1, param.length() - 1));
+    if (variable_name == ""?"")
+        return { String::number(g.last_return_code) };
 
     char* env_value = getenv(variable_name.characters());
     if (env_value == nullptr)
@@ -546,6 +548,8 @@ static int run_command(const String& cmd)
         }
     }
 
+    g.last_return_code = return_value;
+
     // FIXME: Should I really have to tcsetpgrp() after my child has exited?
     //        Is the terminal controlling pgrp really still the PGID of the dead process?
     tcsetpgrp(0, getpid());"
f7e152d049f760fcd3ede7e3f9b1761b9800df0d,2023-02-25 00:14:20,Nico Weber,libgfx: Add scaffolding for a webp decoder,False,Add scaffolding for a webp decoder,libgfx,"diff --git a/AK/Debug.h.in b/AK/Debug.h.in
index eb04cba8db4a..7c31107ef6b3 100644
--- a/AK/Debug.h.in
+++ b/AK/Debug.h.in
@@ -522,6 +522,10 @@
 #cmakedefine01 WEB_WORKER_DEBUG
 #endif
 
+#ifndef WEBP_DEBUG
+#cmakedefine01 WEBP_DEBUG
+#endif
+
 #ifndef WINDOWMANAGER_DEBUG
 #cmakedefine01 WINDOWMANAGER_DEBUG
 #endif
diff --git a/Meta/CMake/all_the_debug_macros.cmake b/Meta/CMake/all_the_debug_macros.cmake
index 8a5db2c19a87..9905999fa72b 100644
--- a/Meta/CMake/all_the_debug_macros.cmake
+++ b/Meta/CMake/all_the_debug_macros.cmake
@@ -217,6 +217,7 @@ set(WEBGL_CONTEXT_DEBUG ON)
 set(WEBSERVER_DEBUG ON)
 set(WEB_FETCH_DEBUG ON)
 set(WEB_WORKER_DEBUG ON)
+set(WEBP_DEBUG ON)
 set(WINDOWMANAGER_DEBUG ON)
 set(WSMESSAGELOOP_DEBUG ON)
 set(WSSCREEN_DEBUG ON)
diff --git a/Userland/Libraries/LibCore/MimeData.cpp b/Userland/Libraries/LibCore/MimeData.cpp
index d679ea53b32c..7e08ebea1bdd 100644
--- a/Userland/Libraries/LibCore/MimeData.cpp
+++ b/Userland/Libraries/LibCore/MimeData.cpp
@@ -73,6 +73,8 @@ StringView guess_mime_type_based_on_filename(StringView path)
         return ""image/svg+xml""sv;
     if (path.ends_with("".tga""sv, CaseSensitivity::CaseInsensitive))
         return ""image/x-targa""sv;
+    if (path.ends_with("".webp""sv, CaseSensitivity::CaseInsensitive))
+        return ""image/webp""sv;
     if (path.ends_with("".md""sv, CaseSensitivity::CaseInsensitive))
         return ""text/markdown""sv;
     if (path.ends_with("".html""sv, CaseSensitivity::CaseInsensitive) || path.ends_with("".htm""sv, CaseSensitivity::CaseInsensitive))
@@ -152,6 +154,7 @@ StringView guess_mime_type_based_on_filename(StringView path)
     __ENUMERATE_MIME_TYPE_HEADER(tiff_bigendian, ""image/tiff"", 0, 4, 'M', 'M', 0x00, '*')                                                        \
     __ENUMERATE_MIME_TYPE_HEADER(wasm, ""application/wasm"", 0, 4, 0x00, 'a', 's', 'm')                                                            \
     __ENUMERATE_MIME_TYPE_HEADER(wav, ""audio/wave"", 8, 4, 'W', 'A', 'V', 'E')                                                                    \
+    __ENUMERATE_MIME_TYPE_HEADER(webp, ""image/webp"", 8, 4, 'W', 'E', 'B', 'P')                                                                   \
     __ENUMERATE_MIME_TYPE_HEADER(win_31x_archive, ""extra/win-31x-compressed"", 0, 4, 'K', 'W', 'A', 'J')                                          \
     __ENUMERATE_MIME_TYPE_HEADER(win_95_archive, ""extra/win-95-compressed"", 0, 4, 'S', 'Z', 'D', 'D')                                            \
     __ENUMERATE_MIME_TYPE_HEADER(zlib_0, ""extra/raw-zlib"", 0, 2, 0x78, 0x01)                                                                     \
diff --git a/Userland/Libraries/LibGfx/CMakeLists.txt b/Userland/Libraries/LibGfx/CMakeLists.txt
index 9e5ac1009214..d0199b82c963 100644
--- a/Userland/Libraries/LibGfx/CMakeLists.txt
+++ b/Userland/Libraries/LibGfx/CMakeLists.txt
@@ -55,6 +55,7 @@ set(SOURCES
     TextLayout.cpp
     TGALoader.cpp
     Triangle.cpp
+    WebPLoader.cpp
     WindowTheme.cpp
 )
 
diff --git a/Userland/Libraries/LibGfx/ImageDecoder.cpp b/Userland/Libraries/LibGfx/ImageDecoder.cpp
index 3395a55bd90c..3a404d44d3fe 100644
--- a/Userland/Libraries/LibGfx/ImageDecoder.cpp
+++ b/Userland/Libraries/LibGfx/ImageDecoder.cpp
@@ -17,6 +17,7 @@
 #include <LibGfx/PPMLoader.h>
 #include <LibGfx/QOILoader.h>
 #include <LibGfx/TGALoader.h>
+#include <LibGfx/WebPLoader.h>
 
 namespace Gfx {
 
@@ -36,6 +37,7 @@ static constexpr ImagePluginInitializer s_initializers[] = {
     { JPEGImageDecoderPlugin::sniff, JPEGImageDecoderPlugin::create },
     { DDSImageDecoderPlugin::sniff, DDSImageDecoderPlugin::create },
     { QOIImageDecoderPlugin::sniff, QOIImageDecoderPlugin::create },
+    { WebPImageDecoderPlugin::sniff, WebPImageDecoderPlugin::create },
 };
 
 struct ImagePluginWithMIMETypeInitializer {
diff --git a/Userland/Libraries/LibGfx/WebPLoader.cpp b/Userland/Libraries/LibGfx/WebPLoader.cpp
new file mode 100644
index 000000000000..19755e6003b4
--- /dev/null
+++ b/Userland/Libraries/LibGfx/WebPLoader.cpp
@@ -0,0 +1,310 @@
+/*
+ * Copyright (c) 2023, Nico Weber <thakis@chromium.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <AK/Debug.h>
+#include <AK/Endian.h>
+#include <AK/Format.h>
+#include <LibGfx/WebPLoader.h>
+
+// Container: https://developers.google.com/speed/webp/docs/riff_container
+// Lossless format: https://developers.google.com/speed/webp/docs/webp_lossless_bitstream_specification
+// Lossy format: https://datatracker.ietf.org/doc/html/rfc6386
+
+namespace Gfx {
+
+namespace {
+
+struct FourCC {
+    constexpr FourCC(char const* name)
+    {
+        cc[0] = name[0];
+        cc[1] = name[1];
+        cc[2] = name[2];
+        cc[3] = name[3];
+    }
+
+    bool operator==(FourCC const&) const = default;
+    bool operator!=(FourCC const&) const = default;
+
+    char cc[4];
+};
+
+// https://developers.google.com/speed/webp/docs/riff_container#webp_file_header
+struct WebPFileHeader {
+    FourCC riff;
+    LittleEndian<u32> file_size;
+    FourCC webp;
+};
+static_assert(AssertSize<WebPFileHeader, 12>());
+
+struct ChunkHeader {
+    FourCC chunk_type;
+    LittleEndian<u32> chunk_size;
+};
+static_assert(AssertSize<ChunkHeader, 8>());
+
+struct Chunk {
+    FourCC type;
+    ReadonlyBytes data;
+};
+
+}
+
+struct WebPLoadingContext {
+    enum State {
+        NotDecoded = 0,
+        Error,
+        HeaderDecoded,
+        SizeDecoded,
+        ChunksDecoded,
+        BitmapDecoded,
+    };
+    State state { State::NotDecoded };
+    ReadonlyBytes data;
+
+    RefPtr<Gfx::Bitmap> bitmap;
+
+    Optional<ReadonlyBytes> icc_data;
+};
+
+// https://developers.google.com/speed/webp/docs/riff_container#webp_file_header
+static ErrorOr<void> decode_webp_header(WebPLoadingContext& context)
+{
+    if (context.state >= WebPLoadingContext::HeaderDecoded)
+        return {};
+
+    if (context.data.size() < sizeof(WebPFileHeader)) {
+        context.state = WebPLoadingContext::State::Error;
+        return Error::from_string_literal(""Missing WebP header"");
+    }
+
+    auto& header = *bit_cast<WebPFileHeader const*>(context.data.data());
+    if (header.riff != FourCC(""RIFF"") || header.webp != FourCC(""WEBP"")) {
+        context.state = WebPLoadingContext::State::Error;
+        return Error::from_string_literal(""Invalid WebP header"");
+    }
+
+    // ""File Size: [...] The size of the file in bytes starting at offset 8. The maximum value of this field is 2^32 minus 10 bytes.""
+    u32 const maximum_webp_file_size = 0xffff'ffff - 9;
+    if (header.file_size > maximum_webp_file_size) {
+        context.state = WebPLoadingContext::State::Error;
+        return Error::from_string_literal(""WebP header file size over maximum"");
+    }
+
+    // ""The file size in the header is the total size of the chunks that follow plus 4 bytes for the 'WEBP' FourCC.
+    //  The file SHOULD NOT contain any data after the data specified by File Size.
+    //  Readers MAY parse such files, ignoring the trailing data.""
+    if (context.data.size() - 8 < header.file_size) {
+        context.state = WebPLoadingContext::State::Error;
+        return Error::from_string_literal(""WebP data too small for size in header"");
+    }
+    if (context.data.size() - 8 > header.file_size) {
+        dbgln_if(WEBP_DEBUG, ""WebP has {} bytes of data, but header needs only {}. Trimming."", context.data.size(), header.file_size + 8);
+        context.data = context.data.trim(header.file_size + 8);
+    }
+
+    context.state = WebPLoadingContext::HeaderDecoded;
+    return {};
+}
+
+static ErrorOr<Chunk> decode_webp_chunk_header(WebPLoadingContext& context, ReadonlyBytes chunks)
+{
+    if (chunks.size() < sizeof(ChunkHeader)) {
+        context.state = WebPLoadingContext::State::Error;
+        return Error::from_string_literal(""Not enough data for WebP chunk header"");
+    }
+
+    auto const& header = *bit_cast<ChunkHeader const*>(chunks.data());
+    dbgln_if(WEBP_DEBUG, ""chunk {} size {}"", header.chunk_type, header.chunk_size);
+
+    if (chunks.size() < sizeof(ChunkHeader) + header.chunk_size) {
+        context.state = WebPLoadingContext::State::Error;
+        return Error::from_string_literal(""Not enough data for WebP chunk"");
+    }
+
+    return Chunk { header.chunk_type, { chunks.data() + sizeof(ChunkHeader), header.chunk_size } };
+}
+
+static ErrorOr<Chunk> decode_webp_advance_chunk(WebPLoadingContext& context, ReadonlyBytes& chunks)
+{
+    auto chunk = TRY(decode_webp_chunk_header(context, chunks));
+    chunks = chunks.slice(sizeof(ChunkHeader) + chunk.data.size());
+    return chunk;
+}
+
+// https://developers.google.com/speed/webp/docs/riff_container#simple_file_format_lossy
+static ErrorOr<void> decode_webp_simple_lossy(WebPLoadingContext& context, Chunk const& vp8_chunk)
+{
+    // FIXME
+    (void)context;
+    (void)vp8_chunk;
+    return {};
+}
+
+// https://developers.google.com/speed/webp/docs/riff_container#simple_file_format_lossless
+static ErrorOr<void> decode_webp_simple_lossless(WebPLoadingContext& context, Chunk const& vp8l_chunk)
+{
+    // FIXME
+    (void)context;
+    (void)vp8l_chunk;
+    return {};
+}
+
+// https://developers.google.com/speed/webp/docs/riff_container#extended_file_format
+static ErrorOr<void> decode_webp_extended(WebPLoadingContext& context, Chunk const& vp8x_chunk, ReadonlyBytes chunks)
+{
+
+    // FIXME: Do something with this.
+    (void)vp8x_chunk;
+
+    // FIXME: This isn't quite to spec, which says
+    // ""All chunks SHOULD be placed in the same order as listed above.
+    //  If a chunk appears in the wrong place, the file is invalid, but readers MAY parse the file, ignoring the chunks that are out of order.""
+    while (!chunks.is_empty()) {
+        auto chunk = TRY(decode_webp_advance_chunk(context, chunks));
+
+        if (chunk.type == FourCC(""ICCP""))
+            context.icc_data = chunk.data;
+
+        // FIXME: Probably want to make this and decode_webp_simple_lossy/lossless call the same function
+        //        instead of calling the _simple functions from the _extended function.
+        if (chunk.type == FourCC(""VP8 ""))
+            TRY(decode_webp_simple_lossy(context, chunk));
+        if (chunk.type == FourCC(""VP8X""))
+            TRY(decode_webp_simple_lossless(context, chunk));
+    }
+
+    context.state = WebPLoadingContext::State::ChunksDecoded;
+    return {};
+}
+
+static ErrorOr<void> decode_webp_chunks(WebPLoadingContext& context)
+{
+    if (context.state >= WebPLoadingContext::State::ChunksDecoded)
+        return {};
+
+    if (context.state < WebPLoadingContext::HeaderDecoded)
+        TRY(decode_webp_header(context));
+
+    ReadonlyBytes chunks = context.data.slice(sizeof(WebPFileHeader));
+    auto first_chunk = TRY(decode_webp_advance_chunk(context, chunks));
+
+    if (first_chunk.type == FourCC(""VP8 "")) {
+        context.state = WebPLoadingContext::State::ChunksDecoded;
+        return decode_webp_simple_lossy(context, first_chunk);
+    }
+
+    if (first_chunk.type == FourCC(""VP8L"")) {
+        context.state = WebPLoadingContext::State::ChunksDecoded;
+        return decode_webp_simple_lossless(context, first_chunk);
+    }
+
+    if (first_chunk.type == FourCC(""VP8X""))
+        return decode_webp_extended(context, first_chunk, chunks);
+
+    return Error::from_string_literal(""WebPImageDecoderPlugin: Invalid first chunk type"");
+}
+
+WebPImageDecoderPlugin::WebPImageDecoderPlugin(ReadonlyBytes data, OwnPtr<WebPLoadingContext> context)
+    : m_context(move(context))
+{
+    m_context->data = data;
+}
+
+WebPImageDecoderPlugin::~WebPImageDecoderPlugin() = default;
+
+IntSize WebPImageDecoderPlugin::size()
+{
+    if (m_context->state == WebPLoadingContext::State::Error)
+        return {};
+
+    if (m_context->state < WebPLoadingContext::State::SizeDecoded) {
+        // FIXME
+    }
+
+    // FIXME
+    return { 0, 0 };
+}
+
+void WebPImageDecoderPlugin::set_volatile()
+{
+    if (m_context->bitmap)
+        m_context->bitmap->set_volatile();
+}
+
+bool WebPImageDecoderPlugin::set_nonvolatile(bool& was_purged)
+{
+    if (!m_context->bitmap)
+        return false;
+    return m_context->bitmap->set_nonvolatile(was_purged);
+}
+
+bool WebPImageDecoderPlugin::initialize()
+{
+    return !decode_webp_header(*m_context).is_error();
+}
+
+ErrorOr<bool> WebPImageDecoderPlugin::sniff(ReadonlyBytes data)
+{
+    WebPLoadingContext context;
+    context.data = data;
+    TRY(decode_webp_header(context));
+    return true;
+}
+
+ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> WebPImageDecoderPlugin::create(ReadonlyBytes data)
+{
+    auto context = TRY(try_make<WebPLoadingContext>());
+    return adopt_nonnull_own_or_enomem(new (nothrow) WebPImageDecoderPlugin(data, move(context)));
+}
+
+bool WebPImageDecoderPlugin::is_animated()
+{
+    // FIXME
+    return false;
+}
+
+size_t WebPImageDecoderPlugin::loop_count()
+{
+    // FIXME
+    return 0;
+}
+
+size_t WebPImageDecoderPlugin::frame_count()
+{
+    // FIXME
+    return 1;
+}
+
+ErrorOr<ImageFrameDescriptor> WebPImageDecoderPlugin::frame(size_t index)
+{
+    if (index >= frame_count())
+        return Error::from_string_literal(""WebPImageDecoderPlugin: Invalid frame index"");
+
+    return Error::from_string_literal(""WebPImageDecoderPlugin: decoding not yet implemented"");
+}
+
+ErrorOr<Optional<ReadonlyBytes>> WebPImageDecoderPlugin::icc_data()
+{
+    TRY(decode_webp_chunks(*m_context));
+    return m_context->icc_data;
+}
+
+}
+
+template<>
+struct AK::Formatter<Gfx::FourCC> : StandardFormatter {
+    ErrorOr<void> format(FormatBuilder& builder, Gfx::FourCC const& four_cc)
+    {
+        TRY(builder.put_padding('\'', 1));
+        TRY(builder.put_padding(four_cc.cc[0], 1));
+        TRY(builder.put_padding(four_cc.cc[1], 1));
+        TRY(builder.put_padding(four_cc.cc[2], 1));
+        TRY(builder.put_padding(four_cc.cc[3], 1));
+        TRY(builder.put_padding('\'', 1));
+        return {};
+    }
+};
diff --git a/Userland/Libraries/LibGfx/WebPLoader.h b/Userland/Libraries/LibGfx/WebPLoader.h
new file mode 100644
index 000000000000..8352093f1ad3
--- /dev/null
+++ b/Userland/Libraries/LibGfx/WebPLoader.h
@@ -0,0 +1,38 @@
+/*
+ * Copyright (c) 2023, Nico Weber <thakis@chromium.org>
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#pragma once
+
+#include <LibGfx/ImageDecoder.h>
+
+namespace Gfx {
+
+struct WebPLoadingContext;
+
+class WebPImageDecoderPlugin final : public ImageDecoderPlugin {
+public:
+    static ErrorOr<bool> sniff(ReadonlyBytes);
+    static ErrorOr<NonnullOwnPtr<ImageDecoderPlugin>> create(ReadonlyBytes);
+
+    virtual ~WebPImageDecoderPlugin() override;
+
+    virtual IntSize size() override;
+    virtual void set_volatile() override;
+    [[nodiscard]] virtual bool set_nonvolatile(bool& was_purged) override;
+    virtual bool initialize() override;
+    virtual bool is_animated() override;
+    virtual size_t loop_count() override;
+    virtual size_t frame_count() override;
+    virtual ErrorOr<ImageFrameDescriptor> frame(size_t index) override;
+    virtual ErrorOr<Optional<ReadonlyBytes>> icc_data() override;
+
+private:
+    WebPImageDecoderPlugin(ReadonlyBytes, OwnPtr<WebPLoadingContext>);
+
+    OwnPtr<WebPLoadingContext> m_context;
+};
+
+}"
90f4c9e44c10bd6035050daefaa2aa6fa3e683e1,2021-06-02 21:39:32,Gunnar Beutner,libc: Fix race condition in pthread_mutex_unlock(),False,Fix race condition in pthread_mutex_unlock(),libc,"diff --git a/Userland/Libraries/LibC/pthread_integration.cpp b/Userland/Libraries/LibC/pthread_integration.cpp
index 9b7d3db35ffc..f0ef135b2522 100644
--- a/Userland/Libraries/LibC/pthread_integration.cpp
+++ b/Userland/Libraries/LibC/pthread_integration.cpp
@@ -119,7 +119,7 @@ int __pthread_mutex_unlock(pthread_mutex_t* mutex)
         return 0;
     }
     mutex->owner = 0;
-    mutex->lock = 0;
+    AK::atomic_store(&mutex->lock, 0u, AK::memory_order_release);
     return 0;
 }"
4bf0ddad4c5dd414c145fd4fb90a821547979630,2024-05-13 03:40:05,Timothy Flynn,meta: Remove the generated bindings forwarding header from the GN build,False,Remove the generated bindings forwarding header from the GN build,meta,"diff --git a/Meta/gn/secondary/Userland/Libraries/LibWeb/BUILD.gn b/Meta/gn/secondary/Userland/Libraries/LibWeb/BUILD.gn
index 2f4c12644fcd..4a58e484a1df 100644
--- a/Meta/gn/secondary/Userland/Libraries/LibWeb/BUILD.gn
+++ b/Meta/gn/secondary/Userland/Libraries/LibWeb/BUILD.gn
@@ -64,7 +64,6 @@ compiled_action(""generate_window_or_worker_interfaces"") {
   inputs = standard_idl_files + iterable_idl_files + namespace_idl_files +
            global_idl_files
   outputs = [
-    ""$target_gen_dir/Bindings/Forward.h"",
     ""$target_gen_dir/Bindings/IntrinsicDefinitions.cpp"",
     ""$target_gen_dir/Bindings/DedicatedWorkerExposedInterfaces.cpp"",
     ""$target_gen_dir/Bindings/DedicatedWorkerExposedInterfaces.h"","
61da1236e7728a50a8b335f55d52e74d86444743,2024-07-25 18:03:33,Aliaksandr Kalenik,libweb: Add a very basic glyph texture cache in Skia painter,False,Add a very basic glyph texture cache in Skia painter,libweb,"diff --git a/Userland/Libraries/LibWeb/Painting/DisplayListPlayerSkia.cpp b/Userland/Libraries/LibWeb/Painting/DisplayListPlayerSkia.cpp
index ac31f5d3c628..a3a4bc7a164e 100644
--- a/Userland/Libraries/LibWeb/Painting/DisplayListPlayerSkia.cpp
+++ b/Userland/Libraries/LibWeb/Painting/DisplayListPlayerSkia.cpp
@@ -387,6 +387,8 @@ DisplayListPlayerSkia::SkiaSurface& DisplayListPlayerSkia::surface() const
     return static_cast<SkiaSurface&>(*m_surface);
 }
 
+static HashMap<Gfx::Bitmap*, sk_sp<SkImage>> s_glyph_cache;
+
 void DisplayListPlayerSkia::draw_glyph_run(DrawGlyphRun const& command)
 {
     auto& canvas = surface().canvas();
@@ -409,13 +411,19 @@ void DisplayListPlayerSkia::draw_glyph_run(DrawGlyphRun const& command)
             auto maybe_font_glyph = scaled_font->glyph(code_point, glyph_position.subpixel_offset);
             if (!maybe_font_glyph.has_value())
                 continue;
-            if (maybe_font_glyph->is_color_bitmap()) {
-                TODO();
-            } else {
-                auto sk_bitmap = to_skia_bitmap(*maybe_font_glyph->bitmap());
-                auto sk_image = SkImages::RasterFromBitmap(sk_bitmap);
+            if (!maybe_font_glyph->is_color_bitmap()) {
                 auto const& blit_position = glyph_position.blit_position;
-                canvas.drawImage(sk_image, blit_position.x(), blit_position.y(), SkSamplingOptions(), &paint);
+                sk_sp<SkImage> image;
+                if (auto maybe_image = s_glyph_cache.get(maybe_font_glyph->bitmap()); maybe_image.has_value()) {
+                    image = maybe_image.value();
+                } else {
+                    auto sk_bitmap = to_skia_bitmap(*maybe_font_glyph->bitmap());
+                    image = SkImages::RasterFromBitmap(sk_bitmap);
+                    s_glyph_cache.set(maybe_font_glyph->bitmap(), image);
+                }
+                canvas.drawImage(image, blit_position.x(), blit_position.y(), SkSamplingOptions(), &paint);
+            } else {
+                TODO();
             }
         }
     }"
dec95cb8b39003d85a9aae46a69f0fbcf450830d,2020-01-23 01:52:23,Sergey Bugaev,libgui: Let GModel specify the drag data type,False,Let GModel specify the drag data type,libgui,"diff --git a/Libraries/LibGUI/GAbstractView.cpp b/Libraries/LibGUI/GAbstractView.cpp
index b8dd15c0fd07..b979d6d4915e 100644
--- a/Libraries/LibGUI/GAbstractView.cpp
+++ b/Libraries/LibGUI/GAbstractView.cpp
@@ -191,7 +191,7 @@ void GAbstractView::mousedown_event(GMouseEvent& event)
         m_selection.clear();
     } else if (event.modifiers() & Mod_Ctrl) {
         m_selection.toggle(index);
-    } else if (event.button() == GMouseButton::Left) {
+    } else if (event.button() == GMouseButton::Left && !m_model->drag_data_type().is_null()) {
         // We might be starting a drag, so don't throw away other selected items yet.
         m_might_drag = true;
         m_selection.add(index);
@@ -219,6 +219,9 @@ void GAbstractView::mousemove_event(GMouseEvent& event)
     if (distance_travelled_squared <= drag_distance_threshold)
         return GScrollableWidget::mousemove_event(event);
 
+    auto data_type = m_model->drag_data_type();
+    ASSERT(!data_type.is_null());
+
     dbg() << ""Initiate drag!"";
     auto drag_operation = GDragOperation::construct();
 
@@ -248,7 +251,7 @@ void GAbstractView::mousemove_event(GMouseEvent& event)
 
     drag_operation->set_text(text_builder.to_string());
     drag_operation->set_bitmap(bitmap);
-    drag_operation->set_data(""url-list"", data_builder.to_string());
+    drag_operation->set_data(data_type, data_builder.to_string());
 
     auto outcome = drag_operation->exec();
 
diff --git a/Libraries/LibGUI/GFileSystemModel.h b/Libraries/LibGUI/GFileSystemModel.h
index ac746dc11874..977b35e2bd8c 100644
--- a/Libraries/LibGUI/GFileSystemModel.h
+++ b/Libraries/LibGUI/GFileSystemModel.h
@@ -117,6 +117,7 @@ class GFileSystemModel : public GModel
     virtual void update() override;
     virtual GModelIndex parent_index(const GModelIndex&) const override;
     virtual GModelIndex index(int row, int column = 0, const GModelIndex& parent = GModelIndex()) const override;
+    virtual StringView drag_data_type() const override { return ""url-list""; }
 
     static String timestamp_string(time_t timestamp)
     {
diff --git a/Libraries/LibGUI/GModel.h b/Libraries/LibGUI/GModel.h
index bf3efa0ba4d9..12f16fdeb83d 100644
--- a/Libraries/LibGUI/GModel.h
+++ b/Libraries/LibGUI/GModel.h
@@ -94,6 +94,8 @@ class GModel : public RefCounted<GModel> {
     virtual GSortOrder sort_order() const { return GSortOrder::None; }
     virtual void set_key_column_and_sort_order(int, GSortOrder) {}
 
+    virtual StringView drag_data_type() const { return {}; }
+
     void register_view(Badge<GAbstractView>, GAbstractView&);
     void unregister_view(Badge<GAbstractView>, GAbstractView&);
 
diff --git a/Libraries/LibGUI/GSortingProxyModel.cpp b/Libraries/LibGUI/GSortingProxyModel.cpp
index 6ca7934927be..eeb88ca57174 100644
--- a/Libraries/LibGUI/GSortingProxyModel.cpp
+++ b/Libraries/LibGUI/GSortingProxyModel.cpp
@@ -87,6 +87,11 @@ void GSortingProxyModel::update()
     target().update();
 }
 
+StringView GSortingProxyModel::drag_data_type() const
+{
+    return target().drag_data_type();
+}
+
 void GSortingProxyModel::set_key_column_and_sort_order(int column, GSortOrder sort_order)
 {
     if (column == m_key_column && sort_order == m_sort_order)
diff --git a/Libraries/LibGUI/GSortingProxyModel.h b/Libraries/LibGUI/GSortingProxyModel.h
index f5882419b1d0..c084205216a0 100644
--- a/Libraries/LibGUI/GSortingProxyModel.h
+++ b/Libraries/LibGUI/GSortingProxyModel.h
@@ -40,6 +40,7 @@ class GSortingProxyModel final : public GModel {
     virtual ColumnMetadata column_metadata(int) const override;
     virtual GVariant data(const GModelIndex&, Role = Role::Display) const override;
     virtual void update() override;
+    virtual StringView drag_data_type() const override;
 
     virtual int key_column() const override { return m_key_column; }
     virtual GSortOrder sort_order() const override { return m_sort_order; }"
442ef6300826816c115462f19df4c168a04415d5,2021-06-05 23:25:08,Idan Horowitz,libjs: Add the global escape() & unescape() methods,False,Add the global escape() & unescape() methods,libjs,"diff --git a/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h b/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h
index 2f97beebb894..6a23ea170d5c 100644
--- a/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h
+++ b/Userland/Libraries/LibJS/Runtime/CommonPropertyNames.h
@@ -99,6 +99,7 @@ namespace JS {
     P(entries)                               \
     P(enumerable)                            \
     P(error)                                 \
+    P(escape)                                \
     P(eval)                                  \
     P(every)                                 \
     P(exec)                                  \
@@ -263,6 +264,7 @@ namespace JS {
     P(trimStart)                             \
     P(trunc)                                 \
     P(undefined)                             \
+    P(unescape)                              \
     P(unicode)                               \
     P(unshift)                               \
     P(value)                                 \
diff --git a/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp b/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
index a38489aae5b1..286ba6581577 100644
--- a/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
@@ -112,6 +112,8 @@ void GlobalObject::initialize_global_object()
     define_native_function(vm.names.decodeURI, decode_uri, 1, attr);
     define_native_function(vm.names.encodeURIComponent, encode_uri_component, 1, attr);
     define_native_function(vm.names.decodeURIComponent, decode_uri_component, 1, attr);
+    define_native_function(vm.names.escape, escape, 1, attr);
+    define_native_function(vm.names.unescape, unescape, 1, attr);
 
     define_property(vm.names.NaN, js_nan(), 0);
     define_property(vm.names.Infinity, js_infinity(), 0);
@@ -433,4 +435,46 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::decode_uri_component)
     return js_string(vm, move(decoded));
 }
 
+JS_DEFINE_NATIVE_FUNCTION(GlobalObject::escape)
+{
+    auto string = vm.argument(0).to_string(global_object);
+    if (vm.exception())
+        return {};
+    StringBuilder escaped;
+    for (auto code_point : Utf8View(string)) {
+        if (code_point < 256) {
+            if (""ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789@*_+-./""sv.contains(code_point))
+                escaped.append(code_point);
+            else
+                escaped.appendff(""%{:02X}"", code_point);
+            continue;
+        }
+        escaped.appendff(""%u{:04X}"", code_point); // FIXME: Handle utf-16 surrogate pairs
+    }
+    return js_string(vm, escaped.build());
+}
+
+JS_DEFINE_NATIVE_FUNCTION(GlobalObject::unescape)
+{
+    auto string = vm.argument(0).to_string(global_object);
+    if (vm.exception())
+        return {};
+    ssize_t length = string.length();
+    StringBuilder unescaped(length);
+    for (auto k = 0; k < length; ++k) {
+        u32 code_point = string[k];
+        if (code_point == '%') {
+            if (k <= length - 6 && string[k + 1] == 'u' && is_ascii_hex_digit(string[k + 2]) && is_ascii_hex_digit(string[k + 3]) && is_ascii_hex_digit(string[k + 4]) && is_ascii_hex_digit(string[k + 5])) {
+                code_point = (parse_ascii_hex_digit(string[k + 2]) << 12) | (parse_ascii_hex_digit(string[k + 3]) << 8) | (parse_ascii_hex_digit(string[k + 4]) << 4) | parse_ascii_hex_digit(string[k + 5]);
+                k += 5;
+            } else if (k <= length - 3 && is_ascii_hex_digit(string[k + 1]) && is_ascii_hex_digit(string[k + 2])) {
+                code_point = (parse_ascii_hex_digit(string[k + 1]) << 4) | parse_ascii_hex_digit(string[k + 2]);
+                k += 2;
+            }
+        }
+        unescaped.append_code_point(code_point);
+    }
+    return js_string(vm, unescaped.build());
+}
+
 }
diff --git a/Userland/Libraries/LibJS/Runtime/GlobalObject.h b/Userland/Libraries/LibJS/Runtime/GlobalObject.h
index dc950c6604be..ddcb0dbc1393 100644
--- a/Userland/Libraries/LibJS/Runtime/GlobalObject.h
+++ b/Userland/Libraries/LibJS/Runtime/GlobalObject.h
@@ -68,6 +68,8 @@ class GlobalObject : public ScopeObject {
     JS_DECLARE_NATIVE_FUNCTION(decode_uri);
     JS_DECLARE_NATIVE_FUNCTION(encode_uri_component);
     JS_DECLARE_NATIVE_FUNCTION(decode_uri_component);
+    JS_DECLARE_NATIVE_FUNCTION(escape);
+    JS_DECLARE_NATIVE_FUNCTION(unescape);
 
     NonnullOwnPtr<Console> m_console;
 
diff --git a/Userland/Libraries/LibJS/Tests/builtins/functions/escapeUnescape.js b/Userland/Libraries/LibJS/Tests/builtins/functions/escapeUnescape.js
new file mode 100644
index 000000000000..c8e29a4a8998
--- /dev/null
+++ b/Userland/Libraries/LibJS/Tests/builtins/functions/escapeUnescape.js
@@ -0,0 +1,21 @@
+test(""escape"", () => {
+    [
+        [""abc123"", ""abc123""],
+        [""äöü"", ""%E4%F6%FC""],
+        [""ć"", ""%u0107""],
+        [""@*_+-./"", ""@*_+-./""],
+    ].forEach(test => {
+        expect(escape(test[0])).toBe(test[1]);
+    });
+});
+
+test(""unescape"", () => {
+    [
+        [""abc123"", ""abc123""],
+        [""%E4%F6%FC"", ""äöü""],
+        [""%u0107"", ""ć""],
+        [""@*_+-./"", ""@*_+-./""],
+    ].forEach(test => {
+        expect(unescape(test[0])).toBe(test[1]);
+    });
+});"
b43b3d2f8dfb20fba1b42df63c1272d9afc7f463,2023-09-28 09:39:52,Aliaksandr Kalenik,libweb: Null check container while creating srcdoc navigation params,False,Null check container while creating srcdoc navigation params,libweb,"diff --git a/Userland/Libraries/LibWeb/HTML/Navigable.cpp b/Userland/Libraries/LibWeb/HTML/Navigable.cpp
index b44dee852fb8..a207e85d7faa 100644
--- a/Userland/Libraries/LibWeb/HTML/Navigable.cpp
+++ b/Userland/Libraries/LibWeb/HTML/Navigable.cpp
@@ -502,7 +502,13 @@ static WebIDL::ExceptionOr<NavigationParams> create_navigation_params_from_a_src
     Optional<PolicyContainer> history_policy_container = entry->document_state->history_policy_container().visit(
         [](PolicyContainer const& c) -> Optional<PolicyContainer> { return c; },
         [](DocumentState::Client) -> Optional<PolicyContainer> { return {}; });
-    auto policy_container = determine_navigation_params_policy_container(*response->url(), history_policy_container, {}, navigable->container_document()->policy_container(), {});
+    PolicyContainer policy_container;
+    if (navigable->container()) {
+        // NOTE: Specification assumes that only navigables corresponding to iframes can be navigated to about:srcdoc.
+        //       We also use srcdoc to implement load_html() for top level navigables so we need to null check container
+        //       because it might be null.
+        policy_container = determine_navigation_params_policy_container(*response->url(), history_policy_container, {}, navigable->container_document()->policy_container(), {});
+    }
 
     // 7. Return a new navigation params, with
     //    id: navigationId"
b8fd52fad62979b44b8b45d9d3ac384bc9e131bc,2021-05-13 11:59:01,Brian Gianforcaro,kernel: Remove unused header from FileDescription.cpp,False,Remove unused header from FileDescription.cpp,kernel,"diff --git a/Kernel/FileSystem/FileDescription.cpp b/Kernel/FileSystem/FileDescription.cpp
index 46ffbca86b09..e80cf76275c5 100644
--- a/Kernel/FileSystem/FileDescription.cpp
+++ b/Kernel/FileSystem/FileDescription.cpp
@@ -8,7 +8,6 @@
 #include <AK/MemoryStream.h>
 #include <Kernel/Debug.h>
 #include <Kernel/Devices/BlockDevice.h>
-#include <Kernel/Devices/CharacterDevice.h>
 #include <Kernel/FileSystem/Custody.h>
 #include <Kernel/FileSystem/FIFO.h>
 #include <Kernel/FileSystem/FileDescription.h>"
28dcef47572f656ec81ff79a48c411c807e4086f,2020-06-10 01:23:16,Andreas Kling,libweb: Add LayoutTableRowGroup to implement display: table-row-group,False,Add LayoutTableRowGroup to implement display: table-row-group,libweb,"diff --git a/Libraries/LibWeb/CMakeLists.txt b/Libraries/LibWeb/CMakeLists.txt
index ae553f6d18dd..6f9a59fe6b51 100644
--- a/Libraries/LibWeb/CMakeLists.txt
+++ b/Libraries/LibWeb/CMakeLists.txt
@@ -87,6 +87,7 @@ set(SOURCES
     Layout/LayoutTable.cpp
     Layout/LayoutTableCell.cpp
     Layout/LayoutTableRow.cpp
+    Layout/LayoutTableRowGroup.cpp
     Layout/LayoutText.cpp
     Layout/LayoutTreeBuilder.cpp
     Layout/LayoutWidget.cpp
diff --git a/Libraries/LibWeb/DOM/Element.cpp b/Libraries/LibWeb/DOM/Element.cpp
index 19b43175d5d4..f8c4565ca6eb 100644
--- a/Libraries/LibWeb/DOM/Element.cpp
+++ b/Libraries/LibWeb/DOM/Element.cpp
@@ -39,6 +39,7 @@
 #include <LibWeb/Layout/LayoutTable.h>
 #include <LibWeb/Layout/LayoutTableCell.h>
 #include <LibWeb/Layout/LayoutTableRow.h>
+#include <LibWeb/Layout/LayoutTableRowGroup.h>
 #include <LibWeb/Layout/LayoutTreeBuilder.h>
 #include <LibWeb/Parser/HTMLParser.h>
 
@@ -130,6 +131,8 @@ RefPtr<LayoutNode> Element::create_layout_node(const StyleProperties* parent_sty
         return adopt(*new LayoutTableRow(*this, move(style)));
     if (display == ""table-cell"")
         return adopt(*new LayoutTableCell(*this, move(style)));
+    if (display == ""table-row-group"")
+        return adopt(*new LayoutTableRowGroup(*this, move(style)));
     if (display == ""inline-block"") {
         auto inline_block = adopt(*new LayoutBlock(this, move(style)));
         inline_block->set_inline(true);
diff --git a/Libraries/LibWeb/Layout/LayoutBlock.h b/Libraries/LibWeb/Layout/LayoutBlock.h
index 597a3ac9b2a1..0a1d770c88f1 100644
--- a/Libraries/LibWeb/Layout/LayoutBlock.h
+++ b/Libraries/LibWeb/Layout/LayoutBlock.h
@@ -65,6 +65,10 @@ class LayoutBlock : public LayoutBox {
 
     virtual void split_into_lines(LayoutBlock& container, LayoutMode) override;
 
+protected:
+    void compute_width();
+    void compute_position();
+    void compute_height();
 
 private:
     virtual bool is_block() const override { return true; }
@@ -75,10 +79,6 @@ class LayoutBlock : public LayoutBox {
     void layout_inline_children(LayoutMode);
     void layout_block_children(LayoutMode);
 
-    void compute_width();
-    void compute_position();
-    void compute_height();
-
     Vector<LineBox> m_line_boxes;
 };
 
diff --git a/Libraries/LibWeb/Layout/LayoutNode.h b/Libraries/LibWeb/Layout/LayoutNode.h
index e34332f9b2e7..cc9153bd7812 100644
--- a/Libraries/LibWeb/Layout/LayoutNode.h
+++ b/Libraries/LibWeb/Layout/LayoutNode.h
@@ -153,6 +153,7 @@ class LayoutNode : public TreeNode<LayoutNode> {
     virtual bool is_table() const { return false; }
     virtual bool is_table_row() const { return false; }
     virtual bool is_table_cell() const { return false; }
+    virtual bool is_table_row_group() const { return false; }
     bool has_style() const { return m_has_style; }
 
     bool is_inline() const { return m_inline; }
diff --git a/Libraries/LibWeb/Layout/LayoutTableRowGroup.cpp b/Libraries/LibWeb/Layout/LayoutTableRowGroup.cpp
new file mode 100644
index 000000000000..de1be0657f52
--- /dev/null
+++ b/Libraries/LibWeb/Layout/LayoutTableRowGroup.cpp
@@ -0,0 +1,59 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <LibWeb/DOM/Element.h>
+#include <LibWeb/Layout/LayoutTableRowGroup.h>
+#include <LibWeb/Layout/LayoutTableRow.h>
+
+namespace Web {
+
+LayoutTableRowGroup::LayoutTableRowGroup(const Element& element, NonnullRefPtr<StyleProperties> style)
+    : LayoutBlock(&element, move(style))
+{
+}
+
+LayoutTableRowGroup::~LayoutTableRowGroup()
+{
+}
+
+void LayoutTableRowGroup::layout(LayoutMode layout_mode)
+{
+    compute_width();
+
+    if (!is_inline())
+        compute_position();
+
+    float content_height = 0;
+
+    for_each_child_of_type<LayoutTableRow>([&](auto& row) {
+        row.layout(layout_mode);
+        content_height += row.height();
+    });
+
+    rect().set_height(content_height);
+}
+
+}
diff --git a/Libraries/LibWeb/Layout/LayoutTableRowGroup.h b/Libraries/LibWeb/Layout/LayoutTableRowGroup.h
new file mode 100644
index 000000000000..f35f4571e747
--- /dev/null
+++ b/Libraries/LibWeb/Layout/LayoutTableRowGroup.h
@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ""AS IS""
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#include <LibWeb/Layout/LayoutBlock.h>
+
+namespace Web {
+
+class LayoutTableRowGroup final : public LayoutBlock {
+public:
+    LayoutTableRowGroup(const Element&, NonnullRefPtr<StyleProperties>);
+    virtual ~LayoutTableRowGroup() override;
+
+    virtual void layout(LayoutMode = LayoutMode::Default) override;
+
+private:
+    virtual bool is_table_row_group() const override { return true; }
+    virtual const char* class_name() const override { return ""LayoutTableRowGroup""; }
+};
+
+template<>
+inline bool is<LayoutTableRowGroup>(const LayoutNode& node)
+{
+    return node.is_table_row_group();
+}
+
+}"
1c3e93c6e07cd6b7a3a029ae3c1786afaa6b4abc,2022-01-20 15:09:12,Mustafa Quraish,pixelpaint: Use FileSystemAccessClient::try_* APIs,False,Use FileSystemAccessClient::try_* APIs,pixelpaint,"diff --git a/Userland/Applications/PixelPaint/Image.cpp b/Userland/Applications/PixelPaint/Image.cpp
index 246a9ef53896..c16f337d9594 100644
--- a/Userland/Applications/PixelPaint/Image.cpp
+++ b/Userland/Applications/PixelPaint/Image.cpp
@@ -173,38 +173,28 @@ RefPtr<Gfx::Bitmap> Image::try_copy_bitmap(Selection const& selection) const
     return cropped_bitmap_or_error.release_value_but_fixme_should_propagate_errors();
 }
 
-ErrorOr<void> Image::export_bmp_to_fd_and_close(int fd, bool preserve_alpha_channel)
+ErrorOr<void> Image::export_bmp_to_file(Core::File& file, bool preserve_alpha_channel)
 {
-    auto file = Core::File::construct();
-    file->open(fd, Core::OpenMode::WriteOnly | Core::OpenMode::Truncate, Core::File::ShouldCloseFileDescriptor::Yes);
-    if (file->has_error())
-        return Error::from_errno(file->error());
-
     auto bitmap_format = preserve_alpha_channel ? Gfx::BitmapFormat::BGRA8888 : Gfx::BitmapFormat::BGRx8888;
     auto bitmap = TRY(try_compose_bitmap(bitmap_format));
 
     Gfx::BMPWriter dumper;
     auto encoded_data = dumper.dump(bitmap);
 
-    if (!file->write(encoded_data.data(), encoded_data.size()))
-        return Error::from_errno(file->error());
+    if (!file.write(encoded_data.data(), encoded_data.size()))
+        return Error::from_errno(file.error());
 
     return {};
 }
 
-ErrorOr<void> Image::export_png_to_fd_and_close(int fd, bool preserve_alpha_channel)
+ErrorOr<void> Image::export_png_to_file(Core::File& file, bool preserve_alpha_channel)
 {
-    auto file = Core::File::construct();
-    file->open(fd, Core::OpenMode::WriteOnly | Core::OpenMode::Truncate, Core::File::ShouldCloseFileDescriptor::Yes);
-    if (file->has_error())
-        return Error::from_errno(file->error());
-
     auto bitmap_format = preserve_alpha_channel ? Gfx::BitmapFormat::BGRA8888 : Gfx::BitmapFormat::BGRx8888;
     auto bitmap = TRY(try_compose_bitmap(bitmap_format));
 
     auto encoded_data = Gfx::PNGWriter::encode(*bitmap);
-    if (!file->write(encoded_data.data(), encoded_data.size()))
-        return Error::from_errno(file->error());
+    if (!file.write(encoded_data.data(), encoded_data.size()))
+        return Error::from_errno(file.error());
 
     return {};
 }
diff --git a/Userland/Applications/PixelPaint/Image.h b/Userland/Applications/PixelPaint/Image.h
index cdb01d40f452..44c1afb9a0b8 100644
--- a/Userland/Applications/PixelPaint/Image.h
+++ b/Userland/Applications/PixelPaint/Image.h
@@ -70,8 +70,8 @@ class Image : public RefCounted<Image> {
 
     void serialize_as_json(JsonObjectSerializer<StringBuilder>& json) const;
     ErrorOr<void> write_to_file(String const& file_path) const;
-    ErrorOr<void> export_bmp_to_fd_and_close(int fd, bool preserve_alpha_channel);
-    ErrorOr<void> export_png_to_fd_and_close(int fd, bool preserve_alpha_channel);
+    ErrorOr<void> export_bmp_to_file(Core::File&, bool preserve_alpha_channel);
+    ErrorOr<void> export_png_to_file(Core::File&, bool preserve_alpha_channel);
 
     void move_layer_to_front(Layer&);
     void move_layer_to_back(Layer&);
diff --git a/Userland/Applications/PixelPaint/ImageEditor.cpp b/Userland/Applications/PixelPaint/ImageEditor.cpp
index d4b7964f8682..3ad8ca8458d0 100644
--- a/Userland/Applications/PixelPaint/ImageEditor.cpp
+++ b/Userland/Applications/PixelPaint/ImageEditor.cpp
@@ -591,12 +591,12 @@ void ImageEditor::save_project()
         save_project_as();
         return;
     }
-    auto response = FileSystemAccessClient::Client::the().request_file(window()->window_id(), path(), Core::OpenMode::Truncate | Core::OpenMode::WriteOnly);
-    if (response.error != 0)
+    auto response = FileSystemAccessClient::Client::the().try_request_file(window(), path(), Core::OpenMode::Truncate | Core::OpenMode::WriteOnly);
+    if (response.is_error())
         return;
-    auto result = save_project_to_fd_and_close(*response.fd);
+    auto result = save_project_to_file(*response.value());
     if (result.is_error()) {
-        GUI::MessageBox::show_error(window(), String::formatted(""Could not save {}: {}"", *response.chosen_file, result.error()));
+        GUI::MessageBox::show_error(window(), String::formatted(""Could not save {}: {}"", path(), result.error()));
         return;
     }
     undo_stack().set_current_unmodified();
@@ -604,19 +604,20 @@ void ImageEditor::save_project()
 
 void ImageEditor::save_project_as()
 {
-    auto save_result = FileSystemAccessClient::Client::the().save_file(window()->window_id(), ""untitled"", ""pp"");
-    if (save_result.error != 0)
+    auto response = FileSystemAccessClient::Client::the().try_save_file(window(), ""untitled"", ""pp"");
+    if (response.is_error())
         return;
-    auto result = save_project_to_fd_and_close(*save_result.fd);
+    auto file = response.value();
+    auto result = save_project_to_file(*file);
     if (result.is_error()) {
-        GUI::MessageBox::show_error(window(), String::formatted(""Could not save {}: {}"", *save_result.chosen_file, result.error()));
+        GUI::MessageBox::show_error(window(), String::formatted(""Could not save {}: {}"", file->filename(), result.error()));
         return;
     }
-    set_path(*save_result.chosen_file);
+    set_path(file->filename());
     undo_stack().set_current_unmodified();
 }
 
-Result<void, String> ImageEditor::save_project_to_fd_and_close(int fd) const
+Result<void, String> ImageEditor::save_project_to_file(Core::File& file) const
 {
     StringBuilder builder;
     JsonObjectSerializer json(builder);
@@ -634,13 +635,8 @@ Result<void, String> ImageEditor::save_project_to_fd_and_close(int fd) const
     json_guides.finish();
     json.finish();
 
-    auto file = Core::File::construct();
-    file->open(fd, Core::OpenMode::WriteOnly | Core::OpenMode::Truncate, Core::File::ShouldCloseFileDescriptor::Yes);
-    if (file->has_error())
-        return String { file->error_string() };
-
-    if (!file->write(builder.string_view()))
-        return String { file->error_string() };
+    if (!file.write(builder.string_view()))
+        return String { file.error_string() };
     return {};
 }
 
diff --git a/Userland/Applications/PixelPaint/ImageEditor.h b/Userland/Applications/PixelPaint/ImageEditor.h
index de881a3cedd4..b8110d540f10 100644
--- a/Userland/Applications/PixelPaint/ImageEditor.h
+++ b/Userland/Applications/PixelPaint/ImageEditor.h
@@ -135,7 +135,7 @@ class ImageEditor final
     GUI::MouseEvent event_adjusted_for_layer(GUI::MouseEvent const&, Layer const&) const;
     GUI::MouseEvent event_with_pan_and_scale_applied(GUI::MouseEvent const&) const;
 
-    Result<void, String> save_project_to_fd_and_close(int fd) const;
+    Result<void, String> save_project_to_file(Core::File&) const;
 
     int calculate_ruler_step_size() const;
     Gfx::IntRect mouse_indicator_rect_x() const;
diff --git a/Userland/Applications/PixelPaint/MainWidget.cpp b/Userland/Applications/PixelPaint/MainWidget.cpp
index 2eba69e9fe5c..69ff38361f29 100644
--- a/Userland/Applications/PixelPaint/MainWidget.cpp
+++ b/Userland/Applications/PixelPaint/MainWidget.cpp
@@ -131,11 +131,10 @@ void MainWidget::initialize_menubar(GUI::Window& window)
         });
 
     m_open_image_action = GUI::CommonActions::make_open_action([&](auto&) {
-        auto result = FileSystemAccessClient::Client::the().open_file(window.window_id());
-        if (result.error != 0)
+        auto response = FileSystemAccessClient::Client::the().try_open_file(&window);
+        if (response.is_error())
             return;
-
-        open_image_fd(*result.fd, *result.chosen_file);
+        open_image(response.value());
     });
 
     m_save_image_as_action = GUI::CommonActions::make_save_as_action([&](auto&) {
@@ -163,11 +162,11 @@ void MainWidget::initialize_menubar(GUI::Window& window)
             ""As &BMP"", [&](auto&) {
                 auto* editor = current_image_editor();
                 VERIFY(editor);
-                auto save_result = FileSystemAccessClient::Client::the().save_file(window.window_id(), ""untitled"", ""bmp"");
-                if (save_result.error != 0)
+                auto response = FileSystemAccessClient::Client::the().try_save_file(&window, ""untitled"", ""bmp"");
+                if (response.is_error())
                     return;
                 auto preserve_alpha_channel = GUI::MessageBox::show(&window, ""Do you wish to preserve transparency?"", ""Preserve transparency?"", GUI::MessageBox::Type::Question, GUI::MessageBox::InputType::YesNo);
-                auto result = editor->image().export_bmp_to_fd_and_close(*save_result.fd, preserve_alpha_channel == GUI::MessageBox::ExecYes);
+                auto result = editor->image().export_bmp_to_file(response.value(), preserve_alpha_channel == GUI::MessageBox::ExecYes);
                 if (result.is_error())
                     GUI::MessageBox::show_error(&window, String::formatted(""Export to BMP failed: {}"", result.error()));
             }));
@@ -177,11 +176,12 @@ void MainWidget::initialize_menubar(GUI::Window& window)
             ""As &PNG"", [&](auto&) {
                 auto* editor = current_image_editor();
                 VERIFY(editor);
-                auto save_result = FileSystemAccessClient::Client::the().save_file(window.window_id(), ""untitled"", ""png"");
-                if (save_result.error != 0)
+                // TODO: fix bmp on line below?
+                auto response = FileSystemAccessClient::Client::the().try_save_file(&window, ""untitled"", ""png"");
+                if (response.is_error())
                     return;
                 auto preserve_alpha_channel = GUI::MessageBox::show(&window, ""Do you wish to preserve transparency?"", ""Preserve transparency?"", GUI::MessageBox::Type::Question, GUI::MessageBox::InputType::YesNo);
-                auto result = editor->image().export_png_to_fd_and_close(*save_result.fd, preserve_alpha_channel == GUI::MessageBox::ExecYes);
+                auto result = editor->image().export_png_to_file(response.value(), preserve_alpha_channel == GUI::MessageBox::ExecYes);
                 if (result.is_error())
                     GUI::MessageBox::show_error(&window, String::formatted(""Export to PNG failed: {}"", result.error()));
             }));
@@ -306,11 +306,11 @@ void MainWidget::initialize_menubar(GUI::Window& window)
         }));
     m_edit_menu->add_action(GUI::Action::create(
         ""&Load Color Palette"", [&](auto&) {
-            auto open_result = FileSystemAccessClient::Client::the().open_file(window.window_id(), ""Load Color Palette"");
-            if (open_result.error != 0)
+            auto response = FileSystemAccessClient::Client::the().try_open_file(&window, ""Load Color Palette"");
+            if (response.is_error())
                 return;
 
-            auto result = PixelPaint::PaletteWidget::load_palette_fd_and_close(*open_result.fd);
+            auto result = PixelPaint::PaletteWidget::load_palette_file(*response.value());
             if (result.is_error()) {
                 GUI::MessageBox::show_error(&window, String::formatted(""Loading color palette failed: {}"", result.error()));
                 return;
@@ -320,11 +320,11 @@ void MainWidget::initialize_menubar(GUI::Window& window)
         }));
     m_edit_menu->add_action(GUI::Action::create(
         ""Sa&ve Color Palette"", [&](auto&) {
-            auto save_result = FileSystemAccessClient::Client::the().save_file(window.window_id(), ""untitled"", ""palette"");
-            if (save_result.error != 0)
+            auto response = FileSystemAccessClient::Client::the().try_save_file(&window, ""untitled"", ""palette"");
+            if (response.is_error())
                 return;
 
-            auto result = PixelPaint::PaletteWidget::save_palette_fd_and_close(m_palette_widget->colors(), *save_result.fd);
+            auto result = PixelPaint::PaletteWidget::save_palette_file(m_palette_widget->colors(), *response.value());
             if (result.is_error())
                 GUI::MessageBox::show_error(&window, String::formatted(""Writing color palette failed: {}"", result.error()));
         }));
@@ -701,18 +701,18 @@ void MainWidget::set_actions_enabled(bool enabled)
     m_zoom_combobox->set_enabled(enabled);
 }
 
-void MainWidget::open_image_fd(int fd, String const& path)
+void MainWidget::open_image(Core::File& file)
 {
-    auto try_load = m_loader.try_load_from_fd_and_close(fd, path);
+    auto try_load = m_loader.try_load_from_file(file);
 
     if (try_load.is_error()) {
-        GUI::MessageBox::show_error(window(), String::formatted(""Unable to open file: {}, {}"", path, try_load.error()));
+        GUI::MessageBox::show_error(window(), String::formatted(""Unable to open file: {}, {}"", file.filename(), try_load.error()));
         return;
     }
 
     auto& image = *m_loader.release_image();
     auto& editor = create_new_editor(image);
-    editor.set_path(path);
+    editor.set_path(file.filename());
     editor.undo_stack().set_current_unmodified();
     m_layer_list_widget->set_image(&image);
 }
@@ -863,11 +863,10 @@ void MainWidget::drop_event(GUI::DropEvent& event)
         if (url.protocol() != ""file"")
             continue;
 
-        auto result = FileSystemAccessClient::Client::the().request_file(window()->window_id(), url.path(), Core::OpenMode::ReadOnly);
-        if (result.error != 0)
-            continue;
-
-        open_image_fd(*result.fd, *result.chosen_file);
+        auto response = FileSystemAccessClient::Client::the().try_request_file(window(), url.path(), Core::OpenMode::ReadOnly);
+        if (response.is_error())
+            return;
+        open_image(response.value());
     }
 }
 }
diff --git a/Userland/Applications/PixelPaint/MainWidget.h b/Userland/Applications/PixelPaint/MainWidget.h
index d60aa812299b..88e7e8df2575 100644
--- a/Userland/Applications/PixelPaint/MainWidget.h
+++ b/Userland/Applications/PixelPaint/MainWidget.h
@@ -35,7 +35,7 @@ class MainWidget : public GUI::Widget {
 
     void initialize_menubar(GUI::Window&);
 
-    void open_image_fd(int fd, String const& path);
+    void open_image(Core::File&);
     void create_default_image();
 
     bool request_close();
diff --git a/Userland/Applications/PixelPaint/PaletteWidget.cpp b/Userland/Applications/PixelPaint/PaletteWidget.cpp
index ea69c3591aaa..d85cd2ce9d5c 100644
--- a/Userland/Applications/PixelPaint/PaletteWidget.cpp
+++ b/Userland/Applications/PixelPaint/PaletteWidget.cpp
@@ -255,16 +255,6 @@ Result<Vector<Color>, String> PaletteWidget::load_palette_file(Core::File& file)
     return palette;
 }
 
-Result<Vector<Color>, String> PaletteWidget::load_palette_fd_and_close(int fd)
-{
-    auto file = Core::File::construct();
-    file->open(fd, Core::OpenMode::ReadOnly, Core::File::ShouldCloseFileDescriptor::Yes);
-    if (file->has_error())
-        return String { file->error_string() };
-
-    return load_palette_file(file);
-}
-
 Result<Vector<Color>, String> PaletteWidget::load_palette_path(String const& file_path)
 {
     auto file_or_error = Core::File::open(file_path, Core::OpenMode::ReadOnly);
@@ -275,20 +265,12 @@ Result<Vector<Color>, String> PaletteWidget::load_palette_path(String const& fil
     return load_palette_file(file);
 }
 
-Result<void, String> PaletteWidget::save_palette_fd_and_close(Vector<Color> palette, int fd)
+Result<void, String> PaletteWidget::save_palette_file(Vector<Color> palette, Core::File& file)
 {
-    auto file = Core::File::construct();
-    file->open(fd, Core::OpenMode::WriteOnly, Core::File::ShouldCloseFileDescriptor::Yes);
-    if (file->has_error())
-        return String { file->error_string() };
-
     for (auto& color : palette) {
-        file->write(color.to_string_without_alpha());
-        file->write(""\n"");
+        file.write(color.to_string_without_alpha());
+        file.write(""\n"");
     }
-
-    file->close();
-
     return {};
 }
 
diff --git a/Userland/Applications/PixelPaint/PaletteWidget.h b/Userland/Applications/PixelPaint/PaletteWidget.h
index ce129864d725..6801b6e649dc 100644
--- a/Userland/Applications/PixelPaint/PaletteWidget.h
+++ b/Userland/Applications/PixelPaint/PaletteWidget.h
@@ -30,16 +30,14 @@ class PaletteWidget final : public GUI::Frame {
 
     Vector<Color> colors();
 
-    static Result<Vector<Color>, String> load_palette_fd_and_close(int);
+    static Result<Vector<Color>, String> load_palette_file(Core::File&);
     static Result<Vector<Color>, String> load_palette_path(String const&);
-    static Result<void, String> save_palette_fd_and_close(Vector<Color>, int);
+    static Result<void, String> save_palette_file(Vector<Color>, Core::File&);
     static Vector<Color> fallback_colors();
 
     void set_image_editor(ImageEditor*);
 
 private:
-    static Result<Vector<Color>, String> load_palette_file(Core::File&);
-
     explicit PaletteWidget();
 
     ImageEditor* m_editor { nullptr };
diff --git a/Userland/Applications/PixelPaint/ProjectLoader.cpp b/Userland/Applications/PixelPaint/ProjectLoader.cpp
index e45ce52bd7a6..8cb03deebd1c 100644
--- a/Userland/Applications/PixelPaint/ProjectLoader.cpp
+++ b/Userland/Applications/PixelPaint/ProjectLoader.cpp
@@ -16,30 +16,22 @@
 
 namespace PixelPaint {
 
-ErrorOr<void> ProjectLoader::try_load_from_fd_and_close(int fd, StringView path)
+ErrorOr<void> ProjectLoader::try_load_from_file(Core::File& file)
 {
-    auto file = Core::File::construct();
-    file->open(fd, Core::OpenMode::ReadOnly, Core::File::ShouldCloseFileDescriptor::No);
-    if (file->has_error())
-        return Error::from_errno(file->error());
-
-    auto contents = file->read_all();
+    auto contents = file.read_all();
 
     auto json_or_error = JsonValue::from_string(contents);
     if (json_or_error.is_error()) {
         m_is_raw_image = true;
 
-        auto mapped_file = TRY(Core::MappedFile::map_from_fd_and_close(fd, path));
-
         // FIXME: Find a way to avoid the memory copy here.
-        auto bitmap = TRY(Image::try_decode_bitmap(mapped_file->bytes()));
+        auto bitmap = TRY(Image::try_decode_bitmap(contents));
         auto image = TRY(Image::try_create_from_bitmap(move(bitmap)));
 
         m_image = image;
         return {};
     }
 
-    close(fd);
     auto& json = json_or_error.value().as_object();
     auto image = TRY(Image::try_create_from_pixel_paint_json(json));
 
diff --git a/Userland/Applications/PixelPaint/ProjectLoader.h b/Userland/Applications/PixelPaint/ProjectLoader.h
index 3f56340ad201..0fc7a059d84f 100644
--- a/Userland/Applications/PixelPaint/ProjectLoader.h
+++ b/Userland/Applications/PixelPaint/ProjectLoader.h
@@ -18,7 +18,7 @@ class ProjectLoader {
     ProjectLoader() = default;
     ~ProjectLoader() = default;
 
-    ErrorOr<void> try_load_from_fd_and_close(int fd, StringView path);
+    ErrorOr<void> try_load_from_file(Core::File&);
 
     bool is_raw_image() const { return m_is_raw_image; }
     bool has_image() const { return !m_image.is_null(); }
diff --git a/Userland/Applications/PixelPaint/main.cpp b/Userland/Applications/PixelPaint/main.cpp
index e4c246b1afee..51c25b9c9977 100644
--- a/Userland/Applications/PixelPaint/main.cpp
+++ b/Userland/Applications/PixelPaint/main.cpp
@@ -71,13 +71,10 @@ ErrorOr<int> serenity_main(Main::Arguments arguments)
     window->show();
 
     if (image_file) {
-        auto response = FileSystemAccessClient::Client::the().request_file_read_only_approved(window->window_id(), image_file);
-        if (response.error != 0) {
-            if (response.error != -1)
-                GUI::MessageBox::show_error(window, String::formatted(""Opening \""{}\"" failed: {}"", *response.chosen_file, strerror(response.error)));
+        auto response = FileSystemAccessClient::Client::the().try_request_file_read_only_approved(window, image_file);
+        if (response.is_error())
             return 1;
-        }
-        main_widget->open_image_fd(*response.fd, *response.chosen_file);
+        main_widget->open_image(response.value());
     } else {
         main_widget->create_default_image();
     }"
0ea4d228e6e49e78ddeef623a2799c772e820dd1,2022-10-16 21:34:46,Linus Groh,libweb: Add missing body has_value() check in XMLHttpRequest::send(),False,Add missing body has_value() check in XMLHttpRequest::send(),libweb,"diff --git a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
index 067cb42aac12..8244360fd28f 100644
--- a/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
+++ b/Userland/Libraries/LibWeb/XHR/XMLHttpRequest.cpp
@@ -462,7 +462,7 @@ WebIDL::ExceptionOr<void> XMLHttpRequest::send(Optional<Variant<JS::Handle<DOM::
     if (!m_request_headers.contains(""Content-Type""sv)) {
         if (body_with_type.has_value() && body_with_type->type.has_value()) {
             request.set_header(""Content-Type"", String { body_with_type->type->span() });
-        } else if (body->has<JS::Handle<DOM::Document>>()) {
+        } else if (body.has_value() && body->has<JS::Handle<DOM::Document>>()) {
             request.set_header(""Content-Type"", ""text/html;charset=UTF-8"");
         }
     }"
92f4408d66761272ef74862cf7a0f4c78f4d4375,2022-05-08 20:11:04,Karol Kosek,displaysettings: Make the copy action copy the background path as url,False,Make the copy action copy the background path as url,displaysettings,"diff --git a/Userland/Applications/DisplaySettings/BackgroundSettingsWidget.cpp b/Userland/Applications/DisplaySettings/BackgroundSettingsWidget.cpp
index 36e635abcef0..75671e5d1e0f 100644
--- a/Userland/Applications/DisplaySettings/BackgroundSettingsWidget.cpp
+++ b/Userland/Applications/DisplaySettings/BackgroundSettingsWidget.cpp
@@ -71,7 +71,12 @@ void BackgroundSettingsWidget::create_frame()
     m_context_menu->add_action(*m_show_in_file_manager_action);
 
     m_context_menu->add_separator();
-    m_copy_action = GUI::CommonActions::make_copy_action([this](auto&) { GUI::Clipboard::the().set_plain_text(m_monitor_widget->wallpaper()); }, this);
+    m_copy_action = GUI::CommonActions::make_copy_action(
+        [this](auto&) {
+            auto url = URL::create_with_file_protocol(m_monitor_widget->wallpaper()).to_string();
+            GUI::Clipboard::the().set_data(url.bytes(), ""text/uri-list"");
+        },
+        this);
     m_context_menu->add_action(*m_copy_action);
 
     m_wallpaper_view->on_context_menu_request = [&](const GUI::ModelIndex& index, const GUI::ContextMenuEvent& event) {"
9a2177437bd197fc53cb1296a52f13afb5c64475,2020-05-30 01:44:45,FalseHonesty,browser: Add clear output button to the console,False,Add clear output button to the console,browser,"diff --git a/Applications/Browser/ConsoleWidget.cpp b/Applications/Browser/ConsoleWidget.cpp
index d67178a8243d..497ea3e497fb 100644
--- a/Applications/Browser/ConsoleWidget.cpp
+++ b/Applications/Browser/ConsoleWidget.cpp
@@ -27,6 +27,7 @@
 #include ""ConsoleWidget.h""
 #include <AK/StringBuilder.h>
 #include <LibGUI/BoxLayout.h>
+#include <LibGUI/Button.h>
 #include <LibGUI/JSSyntaxHighlighter.h>
 #include <LibGUI/TextBox.h>
 #include <LibJS/Interpreter.h>
@@ -59,10 +60,13 @@ ConsoleWidget::ConsoleWidget()
     m_output_view = add<Web::PageView>();
     m_output_view->set_document(base_document);
 
-    m_input = add<GUI::TextBox>();
+    auto& bottom_container = add<GUI::Widget>();
+    bottom_container.set_layout<GUI::HorizontalBoxLayout>();
+    bottom_container.set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
+    bottom_container.set_preferred_size(0, 22);
+
+    m_input = bottom_container.add<GUI::TextBox>();
     m_input->set_syntax_highlighter(make<GUI::JSSyntaxHighlighter>());
-    m_input->set_size_policy(GUI::SizePolicy::Fill, GUI::SizePolicy::Fixed);
-    m_input->set_preferred_size(0, 22);
     // FIXME: Syntax Highlighting breaks the cursor's position on non fixed-width fonts.
     m_input->set_font(Gfx::Font::default_fixed_width_font());
     m_input->set_history_enabled(true);
@@ -104,6 +108,15 @@ ConsoleWidget::ConsoleWidget()
 
         print_html(JS::MarkupGenerator::html_from_value(m_interpreter->last_value()));
     };
+
+    auto& clear_button = bottom_container.add<GUI::Button>();
+    clear_button.set_size_policy(GUI::SizePolicy::Fixed, GUI::SizePolicy::Fixed);
+    clear_button.set_preferred_size(22, 22);
+    clear_button.set_icon(Gfx::Bitmap::load_from_file(""/res/icons/16x16/delete.png""));
+    clear_button.set_tooltip(""Clear the console output"");
+    clear_button.on_click = [this](auto) {
+        clear_output();
+    };
 }
 
 ConsoleWidget::~ConsoleWidget()
@@ -148,7 +161,8 @@ void ConsoleWidget::print_html(const StringView& line)
 
 void ConsoleWidget::clear_output()
 {
-    const_cast<Web::HTMLBodyElement*>(m_output_view->document()->body())->remove_all_children();
+    m_output_container->remove_all_children();
+    m_output_view->update();
 }
 
 }"
4d8912a92b4378d34a06806b3126c8463bdbdcf5,2021-10-13 14:25:10,Linus Groh,libjs: Convert to_string() to ThrowCompletionOr,False,Convert to_string() to ThrowCompletionOr,libjs,"diff --git a/Meta/Lagom/Fuzzers/FuzzilliJs.cpp b/Meta/Lagom/Fuzzers/FuzzilliJs.cpp
index 74754fb5c368..f66d95c028a0 100644
--- a/Meta/Lagom/Fuzzers/FuzzilliJs.cpp
+++ b/Meta/Lagom/Fuzzers/FuzzilliJs.cpp
@@ -141,10 +141,7 @@ JS_DEFINE_NATIVE_FUNCTION(TestRunnerGlobalObject::fuzzilli)
     if (!vm.argument_count())
         return JS::js_undefined();
 
-    auto operation = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
-
+    auto operation = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     if (operation == ""FUZZILLI_CRASH"") {
         auto type = vm.argument(1).to_i32(global_object);
         if (vm.exception())
@@ -164,9 +161,7 @@ JS_DEFINE_NATIVE_FUNCTION(TestRunnerGlobalObject::fuzzilli)
             fzliout = stdout;
         }
 
-        auto string = vm.argument(1).to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto string = TRY_OR_DISCARD(vm.argument(1).to_string(global_object));
         fprintf(fzliout, ""%s\n"", string.characters());
         fflush(fzliout);
     }
diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator.cpp
index c9e27c81b5d0..9260c1b5c3c6 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator.cpp
@@ -906,19 +906,24 @@ static void generate_to_cpp(SourceGenerator& generator, ParameterType& parameter
         if (!optional) {
             if (!parameter.type.nullable) {
                 scoped_generator.append(R""~~~(
-    auto @cpp_name@ = @js_name@@js_suffix@.is_null() && @legacy_null_to_empty_string@
-        ? String::empty()
-        : @js_name@@js_suffix@.to_string(global_object);
-    if (vm.exception())
-        @return_statement@
+    String @cpp_name@;
+    if (@js_name@@js_suffix@.is_null() && @legacy_null_to_empty_string@) {
+        @cpp_name@ = String::empty();
+    } else {
+        auto to_string_result = @js_name@@js_suffix@.to_string(global_object);
+        if (to_string_result.is_error())
+            @return_statement@
+        @cpp_name@ = to_string_result.release_value();
+    }
 )~~~"");
             } else {
                 scoped_generator.append(R""~~~(
     String @cpp_name@;
     if (!@js_name@@js_suffix@.is_nullish()) {
-        @cpp_name@ = @js_name@@js_suffix@.to_string(global_object);
-        if (vm.exception())
+        auto to_string_result = @js_name@@js_suffix@.to_string(global_object);
+        if (to_string_result.is_error())
             @return_statement@
+        @cpp_name@ = to_string_result.release_value();
     }
 )~~~"");
             }
@@ -926,11 +931,14 @@ static void generate_to_cpp(SourceGenerator& generator, ParameterType& parameter
             scoped_generator.append(R""~~~(
     String @cpp_name@;
     if (!@js_name@@js_suffix@.is_undefined()) {
-        @cpp_name@ = @js_name@@js_suffix@.is_null() && @legacy_null_to_empty_string@
-            ? String::empty()
-            : @js_name@@js_suffix@.to_string(global_object);
-        if (vm.exception())
-            @return_statement@
+        if (@js_name@@js_suffix@.is_null() && @legacy_null_to_empty_string@) {
+            @cpp_name@ = String::empty();
+        } else {
+            auto to_string_result = @js_name@@js_suffix@.to_string(global_object);
+            if (to_string_result.is_error())
+                @return_statement@
+            @cpp_name@ = to_string_result.release_value();
+        }
     })~~~"");
             if (optional_default_value.has_value() && (!parameter.type.nullable || optional_default_value.value() != ""null"")) {
                 scoped_generator.append(R""~~~( else {
diff --git a/Tests/LibJS/test-js.cpp b/Tests/LibJS/test-js.cpp
index 6909de1617a9..de7b53156f99 100644
--- a/Tests/LibJS/test-js.cpp
+++ b/Tests/LibJS/test-js.cpp
@@ -18,9 +18,7 @@ TESTJS_GLOBAL_FUNCTION(is_strict_mode, isStrictMode, 0)
 
 TESTJS_GLOBAL_FUNCTION(can_parse_source, canParseSource)
 {
-    auto source = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto source = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     auto parser = JS::Parser(JS::Lexer(source));
     parser.parse_program();
     return JS::Value(!parser.has_errors());
diff --git a/Tests/LibWasm/test-wasm.cpp b/Tests/LibWasm/test-wasm.cpp
index 14ee45e604e4..8daf4513126a 100644
--- a/Tests/LibWasm/test-wasm.cpp
+++ b/Tests/LibWasm/test-wasm.cpp
@@ -13,9 +13,7 @@ TEST_ROOT(""Userland/Libraries/LibWasm/Tests"");
 
 TESTJS_GLOBAL_FUNCTION(read_binary_wasm_file, readBinaryWasmFile)
 {
-    auto filename = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto filename = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     auto file = Core::File::open(filename, Core::OpenMode::ReadOnly);
     if (file.is_error()) {
         vm.throw_exception<JS::TypeError>(global_object, file.error().string());
@@ -169,9 +167,7 @@ void WebAssemblyModule::initialize(JS::GlobalObject& global_object)
 
 JS_DEFINE_NATIVE_FUNCTION(WebAssemblyModule::get_export)
 {
-    auto name = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto name = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     auto this_value = vm.this_value(global_object);
     auto object = this_value.to_object(global_object);
     if (vm.exception())
diff --git a/Tests/LibWeb/test-web.cpp b/Tests/LibWeb/test-web.cpp
index 531f0094219c..893adab2626b 100644
--- a/Tests/LibWeb/test-web.cpp
+++ b/Tests/LibWeb/test-web.cpp
@@ -40,9 +40,7 @@ TESTJS_MAIN_HOOK()
 
 TESTJS_GLOBAL_FUNCTION(load_local_page, loadLocalPage)
 {
-    auto name = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto name = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
 
     // Clear the hooks
     before_initial_load_hooks.clear();
diff --git a/Userland/Applications/Spreadsheet/SpreadsheetModel.cpp b/Userland/Applications/Spreadsheet/SpreadsheetModel.cpp
index 49e7e5bf04c1..986b99214820 100644
--- a/Userland/Applications/Spreadsheet/SpreadsheetModel.cpp
+++ b/Userland/Applications/Spreadsheet/SpreadsheetModel.cpp
@@ -40,7 +40,7 @@ GUI::Variant SheetModel::data(const GUI::ModelIndex& index, GUI::ModelRole role)
                         return builder.to_string();
                     }
                 }
-                auto error = value.to_string(cell->sheet().global_object());
+                auto error = value.to_string_without_side_effects();
                 // This is annoying, but whatever.
                 cell->sheet().interpreter().vm().clear_exception();
 
diff --git a/Userland/Libraries/LibJS/AST.cpp b/Userland/Libraries/LibJS/AST.cpp
index dc369506b02c..52068f465c52 100644
--- a/Userland/Libraries/LibJS/AST.cpp
+++ b/Userland/Libraries/LibJS/AST.cpp
@@ -73,7 +73,7 @@ static void update_function_name(Value value, FlyString const& name)
         static_cast<ECMAScriptFunctionObject&>(function).set_name(name);
 }
 
-static String get_function_name(GlobalObject& global_object, Value value)
+static ThrowCompletionOr<String> get_function_name(GlobalObject& global_object, Value value)
 {
     if (value.is_symbol())
         return String::formatted(""[{}]"", value.as_symbol().description());
@@ -1285,11 +1285,11 @@ ThrowCompletionOr<Value> ClassExpression::class_definition_evaluation(Interprete
             TRY(target.define_property_or_throw(property_key, { .value = method_value, .writable = true, .enumerable = false, .configurable = true }));
             break;
         case ClassMethod::Kind::Getter:
-            update_function_name(method_value, String::formatted(""get {}"", get_function_name(global_object, key)));
+            update_function_name(method_value, String::formatted(""get {}"", TRY(get_function_name(global_object, key))));
             TRY(target.define_property_or_throw(property_key, { .get = &method_function, .enumerable = true, .configurable = true }));
             break;
         case ClassMethod::Kind::Setter:
-            update_function_name(method_value, String::formatted(""set {}"", get_function_name(global_object, key)));
+            update_function_name(method_value, String::formatted(""set {}"", TRY(get_function_name(global_object, key))));
             TRY(target.define_property_or_throw(property_key, { .set = &method_function, .enumerable = true, .configurable = true }));
             break;
         default:
@@ -2346,7 +2346,7 @@ Value ObjectExpression::execute(Interpreter& interpreter, GlobalObject& global_o
         if (value.is_function() && property.is_method())
             static_cast<ECMAScriptFunctionObject&>(value.as_function()).set_home_object(object);
 
-        String name = get_function_name(global_object, key);
+        auto name = TRY_OR_DISCARD(get_function_name(global_object, key));
         if (property.type() == ObjectProperty::Type::Getter) {
             name = String::formatted(""get {}"", name);
         } else if (property.type() == ObjectProperty::Type::Setter) {
@@ -2640,9 +2640,7 @@ Value TemplateLiteral::execute(Interpreter& interpreter, GlobalObject& global_ob
         auto expr = expression.execute(interpreter, global_object);
         if (interpreter.exception())
             return {};
-        auto string = expr.to_string(global_object);
-        if (interpreter.exception())
-            return {};
+        auto string = TRY_OR_DISCARD(expr.to_string(global_object));
         string_builder.append(string);
     }
 
diff --git a/Userland/Libraries/LibJS/Runtime/AbstractOperations.cpp b/Userland/Libraries/LibJS/Runtime/AbstractOperations.cpp
index 958786197cae..0ae5327b40d8 100644
--- a/Userland/Libraries/LibJS/Runtime/AbstractOperations.cpp
+++ b/Userland/Libraries/LibJS/Runtime/AbstractOperations.cpp
@@ -929,10 +929,7 @@ ThrowCompletionOr<String> get_substitution(GlobalObject& global_object, Utf16Vie
                 auto& value = captures[*capture_position - 1];
 
                 if (!value.is_undefined()) {
-                    auto value_string = value.to_string(global_object);
-                    if (auto* exception = vm.exception())
-                        return throw_completion(exception->value());
-
+                    auto value_string = TRY(value.to_string(global_object));
                     result.append(value_string);
                 }
 
@@ -960,10 +957,7 @@ ThrowCompletionOr<String> get_substitution(GlobalObject& global_object, Utf16Vie
                 auto capture = TRY(named_captures.as_object().get(group_name));
 
                 if (!capture.is_undefined()) {
-                    auto capture_string = capture.to_string(global_object);
-                    if (auto* exception = vm.exception())
-                        return throw_completion(exception->value());
-
+                    auto capture_string = TRY(capture.to_string(global_object));
                     result.append(capture_string);
                 }
 
diff --git a/Userland/Libraries/LibJS/Runtime/AggregateErrorConstructor.cpp b/Userland/Libraries/LibJS/Runtime/AggregateErrorConstructor.cpp
index 3e5e91713743..511e9d798a21 100644
--- a/Userland/Libraries/LibJS/Runtime/AggregateErrorConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/AggregateErrorConstructor.cpp
@@ -45,9 +45,7 @@ Value AggregateErrorConstructor::construct(FunctionObject& new_target)
     auto* aggregate_error = TRY_OR_DISCARD(ordinary_create_from_constructor<AggregateError>(global_object, new_target, &GlobalObject::aggregate_error_prototype));
 
     if (!vm.argument(1).is_undefined()) {
-        auto message = vm.argument(1).to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto message = TRY_OR_DISCARD(vm.argument(1).to_string(global_object));
         MUST(aggregate_error->create_non_enumerable_data_property_or_throw(vm.names.message, js_string(vm, message)));
     }
 
diff --git a/Userland/Libraries/LibJS/Runtime/ArrayPrototype.cpp b/Userland/Libraries/LibJS/Runtime/ArrayPrototype.cpp
index 91458162c4bf..69750f46d582 100644
--- a/Userland/Libraries/LibJS/Runtime/ArrayPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ArrayPrototype.cpp
@@ -457,9 +457,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::to_locale_string)
         if (value.is_nullish())
             continue;
         auto locale_string_result = TRY_OR_DISCARD(value.invoke(global_object, vm.names.toLocaleString));
-        auto string = locale_string_result.to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto string = TRY_OR_DISCARD(locale_string_result.to_string(global_object));
         builder.append(string);
     }
     return js_string(vm, builder.to_string());
@@ -484,11 +482,8 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::join)
 
     auto length = TRY_OR_DISCARD(length_of_array_like(global_object, *this_object));
     String separator = "","";
-    if (!vm.argument(0).is_undefined()) {
-        separator = vm.argument(0).to_string(global_object);
-        if (vm.exception())
-            return {};
-    }
+    if (!vm.argument(0).is_undefined())
+        separator = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     StringBuilder builder;
     for (size_t i = 0; i < length; ++i) {
         if (i > 0)
@@ -496,9 +491,7 @@ JS_DEFINE_NATIVE_FUNCTION(ArrayPrototype::join)
         auto value = TRY_OR_DISCARD(this_object->get(i));
         if (value.is_nullish())
             continue;
-        auto string = value.to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto string = TRY_OR_DISCARD(value.to_string(global_object));
         builder.append(string);
     }
 
diff --git a/Userland/Libraries/LibJS/Runtime/DateConstructor.cpp b/Userland/Libraries/LibJS/Runtime/DateConstructor.cpp
index a5a52a99ad56..b6ccf94d0d87 100644
--- a/Userland/Libraries/LibJS/Runtime/DateConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/DateConstructor.cpp
@@ -319,9 +319,7 @@ JS_DEFINE_NATIVE_FUNCTION(DateConstructor::parse)
     if (!vm.argument_count())
         return js_nan();
 
-    auto date_string = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto date_string = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
 
     return parse_date_string(date_string);
 }
diff --git a/Userland/Libraries/LibJS/Runtime/ErrorConstructor.cpp b/Userland/Libraries/LibJS/Runtime/ErrorConstructor.cpp
index c10837473450..1f0ed8a41860 100644
--- a/Userland/Libraries/LibJS/Runtime/ErrorConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ErrorConstructor.cpp
@@ -42,9 +42,7 @@ Value ErrorConstructor::construct(FunctionObject& new_target)
     auto* error = TRY_OR_DISCARD(ordinary_create_from_constructor<Error>(global_object, new_target, &GlobalObject::error_prototype));
 
     if (!vm.argument(0).is_undefined()) {
-        auto message = vm.argument(0).to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto message = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
         MUST(error->create_non_enumerable_data_property_or_throw(vm.names.message, js_string(vm, message)));
     }
 
@@ -89,9 +87,7 @@ Value ErrorConstructor::construct(FunctionObject& new_target)
             global_object, new_target, &GlobalObject::snake_name##_prototype));                                  \
                                                                                                                  \
         if (!vm.argument(0).is_undefined()) {                                                                    \
-            auto message = vm.argument(0).to_string(global_object);                                              \
-            if (vm.exception())                                                                                  \
-                return {};                                                                                       \
+            auto message = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));                              \
             MUST(error->create_non_enumerable_data_property_or_throw(vm.names.message, js_string(vm, message))); \
         }                                                                                                        \
                                                                                                                  \
diff --git a/Userland/Libraries/LibJS/Runtime/ErrorPrototype.cpp b/Userland/Libraries/LibJS/Runtime/ErrorPrototype.cpp
index fc4af4f8b481..57aa578b6164 100644
--- a/Userland/Libraries/LibJS/Runtime/ErrorPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/ErrorPrototype.cpp
@@ -41,19 +41,13 @@ JS_DEFINE_NATIVE_FUNCTION(ErrorPrototype::to_string)
 
     String name = ""Error"";
     auto name_property = TRY_OR_DISCARD(this_object.get(vm.names.name));
-    if (!name_property.is_undefined()) {
-        name = name_property.to_string(global_object);
-        if (vm.exception())
-            return {};
-    }
+    if (!name_property.is_undefined())
+        name = TRY_OR_DISCARD(name_property.to_string(global_object));
 
     String message = """";
     auto message_property = TRY_OR_DISCARD(this_object.get(vm.names.message));
-    if (!message_property.is_undefined()) {
-        message = message_property.to_string(global_object);
-        if (vm.exception())
-            return {};
-    }
+    if (!message_property.is_undefined())
+        message = TRY_OR_DISCARD(message_property.to_string(global_object));
 
     if (name.is_empty())
         return js_string(vm, message);
diff --git a/Userland/Libraries/LibJS/Runtime/FunctionConstructor.cpp b/Userland/Libraries/LibJS/Runtime/FunctionConstructor.cpp
index b916a2e13cc1..9a343d35291e 100644
--- a/Userland/Libraries/LibJS/Runtime/FunctionConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/FunctionConstructor.cpp
@@ -41,24 +41,16 @@ RefPtr<FunctionExpression> FunctionConstructor::create_dynamic_function_node(Glo
     auto& vm = global_object.vm();
     String parameters_source = """";
     String body_source = """";
-    if (vm.argument_count() == 1) {
-        body_source = vm.argument(0).to_string(global_object);
-        if (vm.exception())
-            return {};
-    }
+    if (vm.argument_count() == 1)
+        body_source = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     if (vm.argument_count() > 1) {
         Vector<String> parameters;
-        for (size_t i = 0; i < vm.argument_count() - 1; ++i) {
-            parameters.append(vm.argument(i).to_string(global_object));
-            if (vm.exception())
-                return {};
-        }
+        for (size_t i = 0; i < vm.argument_count() - 1; ++i)
+            parameters.append(TRY_OR_DISCARD(vm.argument(i).to_string(global_object)));
         StringBuilder parameters_builder;
         parameters_builder.join(',', parameters);
         parameters_source = parameters_builder.build();
-        body_source = vm.argument(vm.argument_count() - 1).to_string(global_object);
-        if (vm.exception())
-            return {};
+        body_source = TRY_OR_DISCARD(vm.argument(vm.argument_count() - 1).to_string(global_object));
     }
     auto is_generator = kind == FunctionKind::Generator;
     auto source = String::formatted(""function{} anonymous({}\n) {{\n{}\n}}"", is_generator ? ""*"" : """", parameters_source, body_source);
diff --git a/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp b/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
index 2a2b7791d757..6a95a69de35d 100644
--- a/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/GlobalObject.cpp
@@ -347,9 +347,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::parse_float)
 {
     if (vm.argument(0).is_number())
         return vm.argument(0);
-    auto input_string = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto input_string = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     auto trimmed_string = input_string.trim_whitespace(TrimMode::Left);
     for (size_t length = trimmed_string.length(); length > 0; --length) {
         // This can't throw, so no exception check is fine.
@@ -363,9 +361,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::parse_float)
 // 19.2.5 parseInt ( string, radix ), https://tc39.es/ecma262/#sec-parseint-string-radix
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::parse_int)
 {
-    auto input_string = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto input_string = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
 
     // FIXME: There's a bunch of unnecessary string copying here.
     double sign = 1;
@@ -500,9 +496,7 @@ static String decode(JS::GlobalObject& global_object, const String& string, Stri
 // 19.2.6.4 encodeURI ( uri ), https://tc39.es/ecma262/#sec-encodeuri-uri
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::encode_uri)
 {
-    auto uri_string = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto uri_string = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     auto encoded = encode(global_object, uri_string, "";/?:@&=+$,abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_.!~*'()#""sv);
     if (vm.exception())
         return {};
@@ -512,9 +506,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::encode_uri)
 // 19.2.6.2 decodeURI ( encodedURI ), https://tc39.es/ecma262/#sec-decodeuri-encodeduri
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::decode_uri)
 {
-    auto uri_string = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto uri_string = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     auto decoded = decode(global_object, uri_string, "";/?:@&=+$,#""sv);
     if (vm.exception())
         return {};
@@ -524,9 +516,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::decode_uri)
 // 19.2.6.5 encodeURIComponent ( uriComponent ), https://tc39.es/ecma262/#sec-encodeuricomponent-uricomponent
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::encode_uri_component)
 {
-    auto uri_string = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto uri_string = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     auto encoded = encode(global_object, uri_string, ""abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_.!~*'()""sv);
     if (vm.exception())
         return {};
@@ -536,9 +526,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::encode_uri_component)
 // 19.2.6.3 decodeURIComponent ( encodedURIComponent ), https://tc39.es/ecma262/#sec-decodeuricomponent-encodeduricomponent
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::decode_uri_component)
 {
-    auto uri_string = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto uri_string = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     auto decoded = decode(global_object, uri_string, """"sv);
     if (vm.exception())
         return {};
@@ -548,9 +536,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::decode_uri_component)
 // B.2.1.1 escape ( string ), https://tc39.es/ecma262/#sec-escape-string
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::escape)
 {
-    auto string = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto string = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     StringBuilder escaped;
     for (auto code_point : Utf8View(string)) {
         if (code_point < 256) {
@@ -568,9 +554,7 @@ JS_DEFINE_NATIVE_FUNCTION(GlobalObject::escape)
 // B.2.1.2 unescape ( string ), https://tc39.es/ecma262/#sec-unescape-string
 JS_DEFINE_NATIVE_FUNCTION(GlobalObject::unescape)
 {
-    auto string = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto string = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     ssize_t length = string.length();
     StringBuilder unescaped(length);
     for (auto k = 0; k < length; ++k) {
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/AbstractOperations.cpp b/Userland/Libraries/LibJS/Runtime/Intl/AbstractOperations.cpp
index 2561c7e0fd5a..3343b7827137 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/AbstractOperations.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/AbstractOperations.cpp
@@ -246,9 +246,7 @@ ThrowCompletionOr<Vector<String>> canonicalize_locale_list(GlobalObject& global_
             // iv. Else,
             else {
                 // 1. Let tag be ? ToString(kValue).
-                tag = key_value.to_string(global_object);
-                if (auto* exception = vm.exception())
-                    return throw_completion(exception->value());
+                tag = TRY(key_value.to_string(global_object));
             }
 
             // v. If IsStructurallyValidLanguageTag(tag) is false, throw a RangeError exception.
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/DisplayNamesPrototype.cpp b/Userland/Libraries/LibJS/Runtime/Intl/DisplayNamesPrototype.cpp
index 5fd699a33edc..907574edfb58 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/DisplayNamesPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/DisplayNamesPrototype.cpp
@@ -44,9 +44,7 @@ JS_DEFINE_NATIVE_FUNCTION(DisplayNamesPrototype::of)
         return {};
 
     // 3. Let code be ? ToString(code).
-    auto code_string = code.to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto code_string = TRY_OR_DISCARD(code.to_string(global_object));
     code = js_string(vm, move(code_string));
 
     // 4. Let code be ? CanonicalCodeForDisplayNames(displayNames.[[Type]], code).
diff --git a/Userland/Libraries/LibJS/Runtime/Intl/LocaleConstructor.cpp b/Userland/Libraries/LibJS/Runtime/Intl/LocaleConstructor.cpp
index e6e1ae778bf6..b93a0ff94c53 100644
--- a/Userland/Libraries/LibJS/Runtime/Intl/LocaleConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Intl/LocaleConstructor.cpp
@@ -292,9 +292,7 @@ Value LocaleConstructor::construct(FunctionObject& new_target)
     // 9. Else,
     else {
         // a. Let tag be ? ToString(tag).
-        tag = tag_value.to_string(global_object);
-        if (vm.exception())
-            return {};
+        tag = TRY_OR_DISCARD(tag_value.to_string(global_object));
     }
 
     // 10. Set options to ? CoerceOptionsToObject(options).
@@ -343,7 +341,7 @@ Value LocaleConstructor::construct(FunctionObject& new_target)
     // 24. If kn is not undefined, set kn to ! ToString(kn).
     // 25. Set opt.[[kn]] to kn.
     if (!kn.is_undefined())
-        opt.kn = kn.to_string(global_object);
+        opt.kn = TRY_OR_DISCARD(kn.to_string(global_object));
 
     // 26. Let numberingSystem be ? GetOption(options, ""numberingSystem"", ""string"", undefined, undefined).
     // 27. If numberingSystem is not undefined, then
diff --git a/Userland/Libraries/LibJS/Runtime/JSONObject.cpp b/Userland/Libraries/LibJS/Runtime/JSONObject.cpp
index dd55f0bb7151..25700a74f20b 100644
--- a/Userland/Libraries/LibJS/Runtime/JSONObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/JSONObject.cpp
@@ -65,14 +65,11 @@ String JSONObject::stringify_impl(GlobalObject& global_object, Value value, Valu
                     if (replacer_value.is_string()) {
                         item = replacer_value.as_string().string();
                     } else if (replacer_value.is_number()) {
-                        item = replacer_value.to_string(global_object);
+                        item = MUST(replacer_value.to_string(global_object));
                     } else if (replacer_value.is_object()) {
                         auto& value_object = replacer_value.as_object();
-                        if (is<StringObject>(value_object) || is<NumberObject>(value_object)) {
-                            item = replacer_value.to_string(global_object);
-                            if (vm.exception())
-                                return {};
-                        }
+                        if (is<StringObject>(value_object) || is<NumberObject>(value_object))
+                            item = TRY_OR_DISCARD(replacer_value.to_string(global_object));
                     }
                     if (!item.is_null() && !list.contains_slow(item)) {
                         list.append(item);
@@ -178,7 +175,7 @@ String JSONObject::serialize_json_property(GlobalObject& global_object, Stringif
         return quote_json_string(value.as_string().string());
     if (value.is_number()) {
         if (value.is_finite_number())
-            return value.to_string(global_object);
+            return MUST(value.to_string(global_object));
         return ""null"";
     }
     if (value.is_bigint()) {
@@ -392,9 +389,7 @@ String JSONObject::quote_json_string(String string)
 // 25.5.1 JSON.parse ( text [ , reviver ] ), https://tc39.es/ecma262/#sec-json.parse
 JS_DEFINE_NATIVE_FUNCTION(JSONObject::parse)
 {
-    auto string = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto string = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     auto reviver = vm.argument(1);
 
     auto json = JsonValue::from_string(string);
diff --git a/Userland/Libraries/LibJS/Runtime/NumberPrototype.cpp b/Userland/Libraries/LibJS/Runtime/NumberPrototype.cpp
index 031dd768c01a..57309411ba17 100644
--- a/Userland/Libraries/LibJS/Runtime/NumberPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/NumberPrototype.cpp
@@ -78,11 +78,11 @@ JS_DEFINE_NATIVE_FUNCTION(NumberPrototype::to_fixed)
     }
 
     if (!number_value.is_finite_number())
-        return js_string(vm, number_value.to_string(global_object));
+        return js_string(vm, TRY_OR_DISCARD(number_value.to_string(global_object)));
 
     auto number = number_value.as_double();
     if (fabs(number) >= 1e+21)
-        return js_string(vm, number_value.to_string(global_object));
+        return js_string(vm, MUST(number_value.to_string(global_object)));
 
     return js_string(vm, String::formatted(""{:0.{1}}"", number, static_cast<size_t>(fraction_digits)));
 }
diff --git a/Userland/Libraries/LibJS/Runtime/PropertyName.h b/Userland/Libraries/LibJS/Runtime/PropertyName.h
index c777fc3a3d6d..2bbb6060335f 100644
--- a/Userland/Libraries/LibJS/Runtime/PropertyName.h
+++ b/Userland/Libraries/LibJS/Runtime/PropertyName.h
@@ -7,6 +7,7 @@
 #pragma once
 
 #include <AK/FlyString.h>
+#include <LibJS/Runtime/Completion.h>
 #include <LibJS/Runtime/StringOrSymbol.h>
 
 namespace JS {
@@ -33,10 +34,7 @@ class PropertyName {
             return value.as_symbol();
         if (value.is_integral_number() && value.as_double() >= 0 && value.as_double() < NumericLimits<u32>::max())
             return value.as_u32();
-        auto string = value.to_string(global_object);
-        if (string.is_null())
-            return {};
-        return string;
+        return TRY_OR_DISCARD(value.to_string(global_object));
     }
 
     PropertyName() { }
diff --git a/Userland/Libraries/LibJS/Runtime/RegExpObject.cpp b/Userland/Libraries/LibJS/Runtime/RegExpObject.cpp
index 4352ef518cf6..60a798e5ee6c 100644
--- a/Userland/Libraries/LibJS/Runtime/RegExpObject.cpp
+++ b/Userland/Libraries/LibJS/Runtime/RegExpObject.cpp
@@ -148,9 +148,7 @@ RegExpObject* RegExpObject::regexp_initialize(GlobalObject& global_object, Value
     if (flags.is_undefined()) {
         f = String::empty();
     } else {
-        f = flags.to_string(global_object);
-        if (vm.exception())
-            return {};
+        f = TRY_OR_DISCARD(flags.to_string(global_object));
     }
 
     String original_pattern;
@@ -160,10 +158,7 @@ RegExpObject* RegExpObject::regexp_initialize(GlobalObject& global_object, Value
         original_pattern = String::empty();
         parsed_pattern = String::empty();
     } else {
-        original_pattern = pattern.to_string(global_object);
-        if (vm.exception())
-            return {};
-
+        original_pattern = TRY_OR_DISCARD(pattern.to_string(global_object));
         bool unicode = f.find('u').has_value();
         parsed_pattern = parse_regex_pattern(original_pattern, unicode);
     }
diff --git a/Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp b/Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp
index 8a0bf65fdb00..ec4fd53561d4 100644
--- a/Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/RegExpPrototype.cpp
@@ -377,14 +377,10 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::to_string)
         return {};
 
     auto source_attr = TRY_OR_DISCARD(regexp_object->get(vm.names.source));
-    auto pattern = source_attr.to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto pattern = TRY_OR_DISCARD(source_attr.to_string(global_object));
 
     auto flags_attr = TRY_OR_DISCARD(regexp_object->get(vm.names.flags));
-    auto flags = flags_attr.to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto flags = TRY_OR_DISCARD(flags_attr.to_string(global_object));
 
     return js_string(vm, String::formatted(""/{}/{}"", pattern, flags));
 }
@@ -434,9 +430,7 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::symbol_match)
         if (!result_object)
             return {};
         auto match_object = TRY_OR_DISCARD(result_object->get(0));
-        auto match_str = match_object.to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto match_str = TRY_OR_DISCARD(match_object.to_string(global_object));
 
         TRY_OR_DISCARD(array->create_data_property_or_throw(n, js_string(vm, match_str)));
 
@@ -460,9 +454,8 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::symbol_match_all)
 
     auto* constructor = TRY_OR_DISCARD(species_constructor(global_object, *regexp_object, *global_object.regexp_constructor()));
 
-    auto flags = TRY_OR_DISCARD(regexp_object->get(vm.names.flags)).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto flags_value = TRY_OR_DISCARD(regexp_object->get(vm.names.flags));
+    auto flags = TRY_OR_DISCARD(flags_value.to_string(global_object));
 
     bool global = flags.find('g').has_value();
     bool unicode = flags.find('u').has_value();
@@ -501,13 +494,8 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::symbol_replace)
     auto string_view = string.view();
 
     if (!replace_value.is_function()) {
-        auto replace_string = replace_value.to_string(global_object);
-        if (vm.exception())
-            return {};
-
+        auto replace_string = TRY_OR_DISCARD(replace_value.to_string(global_object));
         replace_value = js_string(vm, move(replace_string));
-        if (vm.exception())
-            return {};
     }
 
     bool global = TRY_OR_DISCARD(regexp_object->get(vm.names.global)).to_boolean();
@@ -537,9 +525,7 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::symbol_replace)
             break;
 
         auto match_object = TRY_OR_DISCARD(result_object->get(0));
-        String match_str = match_object.to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto match_str = TRY_OR_DISCARD(match_object.to_string(global_object));
 
         if (match_str.is_empty())
             TRY_OR_DISCARD(increment_last_index(global_object, *regexp_object, string_view, unicode));
@@ -569,15 +555,8 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::symbol_replace)
         MarkedValueList captures(vm.heap());
         for (size_t n = 1; n <= n_captures; ++n) {
             auto capture = TRY_OR_DISCARD(result.get(n));
-            if (!capture.is_undefined()) {
-                auto capture_string = capture.to_string(global_object);
-                if (vm.exception())
-                    return {};
-
-                capture = Value(js_string(vm, capture_string));
-                if (vm.exception())
-                    return {};
-            }
+            if (!capture.is_undefined())
+                capture = js_string(vm, TRY_OR_DISCARD(capture.to_string(global_object)));
 
             captures.append(move(capture));
         }
@@ -597,10 +576,7 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::symbol_replace)
             }
 
             auto replace_result = TRY_OR_DISCARD(vm.call(replace_value.as_function(), js_undefined(), move(replacer_args)));
-
-            replacement = replace_result.to_string(global_object);
-            if (vm.exception())
-                return {};
+            replacement = TRY_OR_DISCARD(replace_result.to_string(global_object));
         } else {
             auto named_captures_object = js_undefined();
             if (!named_captures.is_undefined()) {
@@ -677,9 +653,8 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpPrototype::symbol_split)
 
     auto* constructor = TRY_OR_DISCARD(species_constructor(global_object, *regexp_object, *global_object.regexp_constructor()));
 
-    auto flags = TRY_OR_DISCARD(regexp_object->get(vm.names.flags)).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto flags_value = TRY_OR_DISCARD(regexp_object->get(vm.names.flags));
+    auto flags = TRY_OR_DISCARD(flags_value.to_string(global_object));
 
     bool unicode = flags.find('u').has_value();
     auto new_flags = flags.find('y').has_value() ? move(flags) : String::formatted(""{}y"", flags);
diff --git a/Userland/Libraries/LibJS/Runtime/RegExpStringIteratorPrototype.cpp b/Userland/Libraries/LibJS/Runtime/RegExpStringIteratorPrototype.cpp
index 57d9b22adbdc..d4dbf0d78367 100644
--- a/Userland/Libraries/LibJS/Runtime/RegExpStringIteratorPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/RegExpStringIteratorPrototype.cpp
@@ -58,10 +58,7 @@ JS_DEFINE_NATIVE_FUNCTION(RegExpStringIteratorPrototype::next)
     if (!match_object)
         return {};
     auto match_string_value = TRY_OR_DISCARD(match_object->get(0));
-    auto match_string = match_string_value.to_string(global_object);
-    if (vm.exception())
-        return {};
-
+    auto match_string = TRY_OR_DISCARD(match_string_value.to_string(global_object));
     if (match_string.is_empty()) {
         auto last_index = TRY_OR_DISCARD(iterator->regexp_object().get(vm.names.lastIndex)).to_length(global_object);
         if (vm.exception())
diff --git a/Userland/Libraries/LibJS/Runtime/StringConstructor.cpp b/Userland/Libraries/LibJS/Runtime/StringConstructor.cpp
index 7396373d8758..74d79441dc24 100644
--- a/Userland/Libraries/LibJS/Runtime/StringConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/StringConstructor.cpp
@@ -94,9 +94,8 @@ JS_DEFINE_NATIVE_FUNCTION(StringConstructor::raw)
     StringBuilder builder;
     for (size_t i = 0; i < literal_segments; ++i) {
         auto next_key = String::number(i);
-        auto next_segment = TRY_OR_DISCARD(raw->get(next_key)).to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto next_segment_value = TRY_OR_DISCARD(raw->get(next_key));
+        auto next_segment = TRY_OR_DISCARD(next_segment_value.to_string(global_object));
 
         builder.append(next_segment);
 
@@ -105,9 +104,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringConstructor::raw)
 
         if (i < number_of_substituions) {
             auto next = vm.argument(i + 1);
-            auto next_sub = next.to_string(global_object);
-            if (vm.exception())
-                return {};
+            auto next_sub = TRY_OR_DISCARD(next.to_string(global_object));
             builder.append(next_sub);
         }
     }
diff --git a/Userland/Libraries/LibJS/Runtime/StringPrototype.cpp b/Userland/Libraries/LibJS/Runtime/StringPrototype.cpp
index 96fb18ce5dcd..a505eb0ade6a 100644
--- a/Userland/Libraries/LibJS/Runtime/StringPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/StringPrototype.cpp
@@ -31,7 +31,7 @@ namespace JS {
 static Optional<String> ak_string_from(VM& vm, GlobalObject& global_object)
 {
     auto this_value = TRY_OR_DISCARD(require_object_coercible(global_object, vm.this_value(global_object)));
-    return this_value.to_string(global_object);
+    return TRY_OR_DISCARD(this_value.to_string(global_object));
 }
 
 static Utf16String utf16_string_from(VM& vm, GlobalObject& global_object)
@@ -564,9 +564,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::concat)
     StringBuilder builder;
     builder.append(*string);
     for (size_t i = 0; i < vm.argument_count(); ++i) {
-        auto string_argument = vm.argument(i).to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto string_argument = TRY_OR_DISCARD(vm.argument(i).to_string(global_object));
         builder.append(string_argument);
     }
     return js_string(vm, builder.to_string());
@@ -846,9 +844,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::at)
 JS_DEFINE_NATIVE_FUNCTION(StringPrototype::symbol_iterator)
 {
     auto this_object = TRY_OR_DISCARD(require_object_coercible(global_object, vm.this_value(global_object)));
-    auto string = this_object.to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto string = TRY_OR_DISCARD(this_object.to_string(global_object));
     return StringIterator::create(global_object, string);
 }
 
@@ -882,9 +878,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::match_all)
         if (is_regexp) {
             auto flags = TRY_OR_DISCARD(regexp.as_object().get(""flags""));
             auto flags_object = TRY_OR_DISCARD(require_object_coercible(global_object, flags));
-            auto flags_string = flags_object.to_string(global_object);
-            if (vm.exception())
-                return {};
+            auto flags_string = TRY_OR_DISCARD(flags_object.to_string(global_object));
             if (!flags_string.contains(""g"")) {
                 vm.throw_exception<TypeError>(global_object, ErrorType::StringNonGlobalRegExp);
                 return {};
@@ -941,10 +935,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::replace)
 
     if (replace_value.is_function()) {
         auto result = TRY_OR_DISCARD(vm.call(replace_value.as_function(), js_undefined(), js_string(vm, search_string), Value(position.value()), js_string(vm, string)));
-
-        replacement = result.to_string(global_object);
-        if (vm.exception())
-            return {};
+        replacement = TRY_OR_DISCARD(result.to_string(global_object));
     } else {
         replacement = TRY_OR_DISCARD(get_substitution(global_object, search_string.view(), string.view(), *position, {}, js_undefined(), replace_value));
     }
@@ -970,9 +961,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::replace_all)
         if (is_regexp) {
             auto flags = TRY_OR_DISCARD(search_value.as_object().get(vm.names.flags));
             auto flags_object = TRY_OR_DISCARD(require_object_coercible(global_object, flags));
-            auto flags_string = flags_object.to_string(global_object);
-            if (vm.exception())
-                return {};
+            auto flags_string = TRY_OR_DISCARD(flags_object.to_string(global_object));
             if (!flags_string.contains(""g"")) {
                 vm.throw_exception<TypeError>(global_object, ErrorType::StringNonGlobalRegExp);
                 return {};
@@ -1021,10 +1010,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::replace_all)
 
         if (replace_value.is_function()) {
             auto result = TRY_OR_DISCARD(vm.call(replace_value.as_function(), js_undefined(), js_string(vm, search_string), Value(position), js_string(vm, string)));
-
-            replacement = result.to_string(global_object);
-            if (vm.exception())
-                return {};
+            replacement = TRY_OR_DISCARD(result.to_string(global_object));
         } else {
             replacement = TRY_OR_DISCARD(get_substitution(global_object, search_string.view(), string.view(), position, {}, js_undefined(), replace_value));
         }
@@ -1066,16 +1052,12 @@ static Value create_html(GlobalObject& global_object, Value string, const String
 {
     auto& vm = global_object.vm();
     TRY_OR_DISCARD(require_object_coercible(global_object, string));
-    auto str = string.to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto str = TRY_OR_DISCARD(string.to_string(global_object));
     StringBuilder builder;
     builder.append('<');
     builder.append(tag);
     if (!attribute.is_empty()) {
-        auto value_string = value.to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto value_string = TRY_OR_DISCARD(value.to_string(global_object));
         builder.append(' ');
         builder.append(attribute);
         builder.append(""=\"""");
@@ -1176,9 +1158,7 @@ JS_DEFINE_NATIVE_FUNCTION(StringPrototype::locale_compare)
     if (!string.has_value())
         return {};
 
-    auto that_string = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto that_string = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
 
     // FIXME: Actually compare the string not just according to their bits.
     if (string == that_string)
diff --git a/Userland/Libraries/LibJS/Runtime/SymbolConstructor.cpp b/Userland/Libraries/LibJS/Runtime/SymbolConstructor.cpp
index bbb95cadd83b..97061a704a68 100644
--- a/Userland/Libraries/LibJS/Runtime/SymbolConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/SymbolConstructor.cpp
@@ -44,7 +44,7 @@ Value SymbolConstructor::call()
 {
     if (vm().argument(0).is_undefined())
         return js_symbol(heap(), {}, false);
-    return js_symbol(heap(), vm().argument(0).to_string(global_object()), false);
+    return js_symbol(heap(), TRY_OR_DISCARD(vm().argument(0).to_string(global_object())), false);
 }
 
 // 20.4.1.1 Symbol ( [ description ] ), https://tc39.es/ecma262/#sec-symbol-description
@@ -57,7 +57,7 @@ Value SymbolConstructor::construct(FunctionObject&)
 // 20.4.2.2 Symbol.for ( key ), https://tc39.es/ecma262/#sec-symbol.for
 JS_DEFINE_NATIVE_FUNCTION(SymbolConstructor::for_)
 {
-    String description = vm.argument(0).to_string(global_object);
+    auto description = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     return global_object.vm().get_global_symbol(description);
 }
 
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp
index 17f1a0578890..397d6bd6abc2 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/Calendar.cpp
@@ -297,12 +297,8 @@ ThrowCompletionOr<Value> calendar_era(GlobalObject& global_object, Object& calen
     auto result = TRY(Value(&calendar).invoke(global_object, vm.names.era, &date_like));
 
     // 3. If result is not undefined, set result to ? ToString(result).
-    if (!result.is_undefined()) {
-        auto result_string = result.to_string(global_object);
-        if (auto* exception = vm.exception())
-            return throw_completion(exception->value());
-        result = js_string(vm, move(result_string));
-    }
+    if (!result.is_undefined())
+        result = js_string(vm, TRY(result.to_string(global_object)));
 
     // 4. Return result.
     return result;
@@ -362,9 +358,7 @@ ThrowCompletionOr<Object*> to_temporal_calendar(GlobalObject& global_object, Val
     }
 
     // 2. Let identifier be ? ToString(temporalCalendarLike).
-    auto identifier = temporal_calendar_like.to_string(global_object);
-    if (auto* exception = vm.exception())
-        return throw_completion(exception->value());
+    auto identifier = TRY(temporal_calendar_like.to_string(global_object));
 
     // 3. If ! IsBuiltinCalendar(identifier) is false, then
     if (!is_builtin_calendar(identifier)) {
@@ -510,21 +504,15 @@ String format_calendar_annotation(StringView id, StringView show_calendar)
 // 12.1.28 CalendarEquals ( one, two ), https://tc39.es/proposal-temporal/#sec-temporal-calendarequals
 ThrowCompletionOr<bool> calendar_equals(GlobalObject& global_object, Object& one, Object& two)
 {
-    auto& vm = global_object.vm();
-
     // 1. If one and two are the same Object value, return true.
     if (&one == &two)
         return true;
 
     // 2. Let calendarOne be ? ToString(one).
-    auto calendar_one = Value(&one).to_string(global_object);
-    if (auto* exception = vm.exception())
-        return throw_completion(exception->value());
+    auto calendar_one = TRY(Value(&one).to_string(global_object));
 
     // 3. Let calendarTwo be ? ToString(two).
-    auto calendar_two = Value(&two).to_string(global_object);
-    if (auto* exception = vm.exception())
-        return throw_completion(exception->value());
+    auto calendar_two = TRY(Value(&two).to_string(global_object));
 
     // 4. If calendarOne is calendarTwo, return true.
     if (calendar_one == calendar_two)
@@ -543,14 +531,10 @@ ThrowCompletionOr<Object*> consolidate_calendars(GlobalObject& global_object, Ob
         return &two;
 
     // 2. Let calendarOne be ? ToString(one).
-    auto calendar_one = Value(&one).to_string(global_object);
-    if (auto* exception = vm.exception())
-        return throw_completion(exception->value());
+    auto calendar_one = TRY(Value(&one).to_string(global_object));
 
     // 3. Let calendarTwo be ? ToString(two).
-    auto calendar_two = Value(&two).to_string(global_object);
-    if (auto* exception = vm.exception())
-        return throw_completion(exception->value());
+    auto calendar_two = TRY(Value(&two).to_string(global_object));
 
     // 4. If calendarOne is calendarTwo, return two.
     if (calendar_one == calendar_two)
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/CalendarConstructor.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/CalendarConstructor.cpp
index 4a7cd62dfc0b..de4e7af2e54c 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/CalendarConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/CalendarConstructor.cpp
@@ -49,9 +49,7 @@ Value CalendarConstructor::construct(FunctionObject& new_target)
     auto& global_object = this->global_object();
 
     // 2. Set id to ? ToString(id).
-    auto identifier = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto identifier = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
 
     // 3. If ! IsBuiltinCalendar(id) is false, then
     if (!is_builtin_calendar(identifier)) {
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/CalendarPrototype.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/CalendarPrototype.cpp
index 204162e55f71..3e7268dbd028 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/CalendarPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/CalendarPrototype.cpp
@@ -69,7 +69,7 @@ JS_DEFINE_NATIVE_FUNCTION(CalendarPrototype::id_getter)
     auto calendar = vm.this_value(global_object);
 
     // 2. Return ? ToString(calendar).
-    return js_string(vm, calendar.to_string(global_object));
+    return js_string(vm, TRY_OR_DISCARD(calendar.to_string(global_object)));
 }
 
 // 12.4.4 Temporal.Calendar.prototype.dateFromFields ( fields [ , options ] ), https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.datefromfields
@@ -637,7 +637,7 @@ JS_DEFINE_NATIVE_FUNCTION(CalendarPrototype::to_json)
     auto calendar = vm.this_value(global_object);
 
     // 2. Return ? ToString(calendar).
-    return js_string(vm, calendar.to_string(global_object));
+    return js_string(vm, TRY_OR_DISCARD(calendar.to_string(global_object)));
 }
 
 // 15.6.2.6 Temporal.Calendar.prototype.era ( temporalDateLike ), https://tc39.es/proposal-temporal/#sec-temporal.calendar.prototype.era
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/Duration.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/Duration.cpp
index 695de3e7cba7..174ff9ffc857 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/Duration.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/Duration.cpp
@@ -34,8 +34,6 @@ Duration::Duration(double years, double months, double weeks, double days, doubl
 // 7.5.1 ToTemporalDuration ( item ), https://tc39.es/proposal-temporal/#sec-temporal-totemporalduration
 ThrowCompletionOr<Duration*> to_temporal_duration(GlobalObject& global_object, Value item)
 {
-    auto& vm = global_object.vm();
-
     TemporalDuration result;
 
     // 1. If Type(item) is Object, then
@@ -51,9 +49,7 @@ ThrowCompletionOr<Duration*> to_temporal_duration(GlobalObject& global_object, V
     // 2. Else,
     else {
         // a. Let string be ? ToString(item).
-        auto string = item.to_string(global_object);
-        if (auto* exception = vm.exception())
-            return throw_completion(exception->value());
+        auto string = TRY(item.to_string(global_object));
 
         // b. Let result be ? ParseTemporalDurationString(string).
         result = TRY(parse_temporal_duration_string(global_object, string));
@@ -451,9 +447,7 @@ ThrowCompletionOr<TemporalDuration> to_limited_temporal_duration(GlobalObject& g
     // 1. If Type(temporalDurationLike) is not Object, then
     if (!temporal_duration_like.is_object()) {
         // a. Let str be ? ToString(temporalDurationLike).
-        auto str = temporal_duration_like.to_string(global_object);
-        if (auto* exception = vm.exception())
-            return throw_completion(exception->value());
+        auto str = TRY(temporal_duration_like.to_string(global_object));
 
         // b. Let duration be ? ParseTemporalDurationString(str).
         duration = TRY(parse_temporal_duration_string(global_object, str));
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/Instant.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/Instant.cpp
index 22f00ea867bd..0969ee721c9a 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/Instant.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/Instant.cpp
@@ -72,8 +72,6 @@ ThrowCompletionOr<Instant*> create_temporal_instant(GlobalObject& global_object,
 // 8.5.3 ToTemporalInstant ( item ), https://tc39.es/proposal-temporal/#sec-temporal-totemporalinstant
 ThrowCompletionOr<Instant*> to_temporal_instant(GlobalObject& global_object, Value item)
 {
-    auto& vm = global_object.vm();
-
     // 1. If Type(item) is Object, then
     if (item.is_object()) {
         // a. If item has an [[InitializedTemporalInstant]] internal slot, then
@@ -92,9 +90,7 @@ ThrowCompletionOr<Instant*> to_temporal_instant(GlobalObject& global_object, Val
     }
 
     // 2. Let string be ? ToString(item).
-    auto string = item.to_string(global_object);
-    if (auto* exception = vm.exception())
-        return throw_completion(exception->value());
+    auto string = TRY(item.to_string(global_object));
 
     // 3. Let epochNanoseconds be ? ParseTemporalInstant(string).
     auto* epoch_nanoseconds = TRY(parse_temporal_instant(global_object, string));
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDate.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDate.cpp
index 21aa82fe5e65..1f6468365790 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDate.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDate.cpp
@@ -125,9 +125,7 @@ ThrowCompletionOr<PlainDate*> to_temporal_date(GlobalObject& global_object, Valu
     (void)TRY(to_temporal_overflow(global_object, *options));
 
     // 5. Let string be ? ToString(item).
-    auto string = item.to_string(global_object);
-    if (auto* exception = vm.exception())
-        return throw_completion(exception->value());
+    auto string = TRY(item.to_string(global_object));
 
     // 6. Let result be ? ParseTemporalDateString(string).
     auto result = TRY(parse_temporal_date_string(global_object, string));
@@ -516,8 +514,6 @@ String pad_iso_year(i32 y)
 // 3.5.8 TemporalDateToString ( temporalDate, showCalendar ), https://tc39.es/proposal-temporal/#sec-temporal-temporaldatetostring
 ThrowCompletionOr<String> temporal_date_to_string(GlobalObject& global_object, PlainDate& temporal_date, StringView show_calendar)
 {
-    auto& vm = global_object.vm();
-
     // 1. Assert: Type(temporalDate) is Object.
     // 2. Assert: temporalDate has an [[InitializedTemporalDate]] internal slot.
 
@@ -531,9 +527,7 @@ ThrowCompletionOr<String> temporal_date_to_string(GlobalObject& global_object, P
     auto day = String::formatted(""{:02}"", temporal_date.iso_day());
 
     // 6. Let calendarID be ? ToString(temporalDate.[[Calendar]]).
-    auto calendar_id = Value(&temporal_date.calendar()).to_string(global_object);
-    if (auto* exception = vm.exception())
-        return throw_completion(exception->value());
+    auto calendar_id = TRY(Value(&temporal_date.calendar()).to_string(global_object));
 
     // 7. Let calendar be ! FormatCalendarAnnotation(calendarID, showCalendar).
     auto calendar = format_calendar_annotation(calendar_id, show_calendar);
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTime.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTime.cpp
index 03fe6e3cc40d..f1727af1409c 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTime.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainDateTime.cpp
@@ -187,9 +187,7 @@ ThrowCompletionOr<PlainDateTime*> to_temporal_date_time(GlobalObject& global_obj
         (void)TRY(to_temporal_overflow(global_object, *options));
 
         // b. Let string be ? ToString(item).
-        auto string = item.to_string(global_object);
-        if (auto* exception = vm.exception())
-            return throw_completion(exception->value());
+        auto string = TRY(item.to_string(global_object));
 
         // c. Let result be ? ParseTemporalDateTimeString(string).
         result = TRY(parse_temporal_date_time_string(global_object, string));
@@ -273,8 +271,6 @@ ThrowCompletionOr<PlainDateTime*> create_temporal_date_time(GlobalObject& global
 // 5.5.7 TemporalDateTimeToString ( isoYear, isoMonth, isoDay, hour, minute, second, millisecond, microsecond, nanosecond, calendar, precision, showCalendar ), , https://tc39.es/proposal-temporal/#sec-temporal-temporaldatetimetostring
 ThrowCompletionOr<String> temporal_date_time_to_string(GlobalObject& global_object, i32 iso_year, u8 iso_month, u8 iso_day, u8 hour, u8 minute, u8 second, u16 millisecond, u16 microsecond, u16 nanosecond, Value calendar, Variant<StringView, u8> const& precision, StringView show_calendar)
 {
-    auto& vm = global_object.vm();
-
     // 1. Assert: isoYear, isoMonth, isoDay, hour, minute, second, millisecond, microsecond, and nanosecond are integers.
 
     // 2. Let year be ! PadISOYear(isoYear).
@@ -287,9 +283,7 @@ ThrowCompletionOr<String> temporal_date_time_to_string(GlobalObject& global_obje
     auto seconds = format_seconds_string_part(second, millisecond, microsecond, nanosecond, precision);
 
     // 8. Let calendarID be ? ToString(calendar).
-    auto calendar_id = calendar.to_string(global_object);
-    if (auto* exception = vm.exception())
-        return throw_completion(exception->value());
+    auto calendar_id = TRY(calendar.to_string(global_object));
 
     // 9. Let calendarString be ! FormatCalendarAnnotation(calendarID, showCalendar).
     auto calendar_string = format_calendar_annotation(calendar_id, show_calendar);
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainMonthDay.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainMonthDay.cpp
index 33c849763cf1..d677d1e7527e 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainMonthDay.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainMonthDay.cpp
@@ -154,8 +154,6 @@ ThrowCompletionOr<PlainMonthDay*> create_temporal_month_day(GlobalObject& global
 // 10.5.3 TemporalMonthDayToString ( monthDay, showCalendar ), https://tc39.es/proposal-temporal/#sec-temporal-temporalmonthdaytostring
 ThrowCompletionOr<String> temporal_month_day_to_string(GlobalObject& global_object, PlainMonthDay& month_day, StringView show_calendar)
 {
-    auto& vm = global_object.vm();
-
     // 1. Assert: Type(monthDay) is Object.
     // 2. Assert: monthDay has an [[InitializedTemporalMonthDay]] internal slot.
 
@@ -165,9 +163,7 @@ ThrowCompletionOr<String> temporal_month_day_to_string(GlobalObject& global_obje
     auto result = String::formatted(""{:02}-{:02}"", month_day.iso_month(), month_day.iso_day());
 
     // 6. Let calendarID be ? ToString(monthDay.[[Calendar]]).
-    auto calendar_id = Value(&month_day.calendar()).to_string(global_object);
-    if (auto* exception = vm.exception())
-        return throw_completion(exception->value());
+    auto calendar_id = TRY(Value(&month_day.calendar()).to_string(global_object));
 
     // 7. If calendarID is not ""iso8601"", then
     if (calendar_id != ""iso8601""sv) {
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainTime.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainTime.cpp
index 0b12c8bd5914..a08638837d63 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainTime.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainTime.cpp
@@ -84,9 +84,7 @@ ThrowCompletionOr<PlainTime*> to_temporal_time(GlobalObject& global_object, Valu
         auto* calendar = TRY(get_temporal_calendar_with_iso_default(global_object, item_object));
 
         // e. If ? ToString(calendar) is not ""iso8601"", then
-        auto calendar_identifier = Value(calendar).to_string(global_object);
-        if (auto* exception = vm.exception())
-            return throw_completion(exception->value());
+        auto calendar_identifier = TRY(Value(calendar).to_string(global_object));
         if (calendar_identifier != ""iso8601""sv) {
             // i. Throw a RangeError exception.
             return vm.throw_completion<RangeError>(global_object, ErrorType::TemporalInvalidCalendarIdentifier, calendar_identifier);
@@ -101,9 +99,7 @@ ThrowCompletionOr<PlainTime*> to_temporal_time(GlobalObject& global_object, Valu
     // 4. Else,
     else {
         // a. Let string be ? ToString(item).
-        auto string = item.to_string(global_object);
-        if (auto* exception = vm.exception())
-            return throw_completion(exception->value());
+        auto string = TRY(item.to_string(global_object));
 
         // b. Let result be ? ParseTemporalTimeString(string).
         result = TRY(parse_temporal_time_string(global_object, string));
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonth.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonth.cpp
index cd58b33d0368..7996692ff8cb 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonth.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/PlainYearMonth.cpp
@@ -68,9 +68,7 @@ ThrowCompletionOr<PlainYearMonth*> to_temporal_year_month(GlobalObject& global_o
     (void)TRY(to_temporal_overflow(global_object, *options));
 
     // 5. Let string be ? ToString(item).
-    auto string = item.to_string(global_object);
-    if (auto* exception = vm.exception())
-        return throw_completion(exception->value());
+    auto string = TRY(item.to_string(global_object));
 
     // 6. Let result be ? ParseTemporalYearMonthString(string).
     auto result = TRY(parse_temporal_year_month_string(global_object, string));
@@ -236,8 +234,6 @@ ThrowCompletionOr<PlainYearMonth*> create_temporal_year_month(GlobalObject& glob
 // 9.5.8 TemporalYearMonthToString ( yearMonth, showCalendar ), https://tc39.es/proposal-temporal/#sec-temporal-temporalyearmonthtostring
 ThrowCompletionOr<String> temporal_year_month_to_string(GlobalObject& global_object, PlainYearMonth& year_month, StringView show_calendar)
 {
-    auto& vm = global_object.vm();
-
     // 1. Assert: Type(yearMonth) is Object.
     // 2. Assert: yearMonth has an [[InitializedTemporalYearMonth]] internal slot.
 
@@ -247,9 +243,7 @@ ThrowCompletionOr<String> temporal_year_month_to_string(GlobalObject& global_obj
     auto result = String::formatted(""{}-{:02}"", pad_iso_year(year_month.iso_year()), year_month.iso_month());
 
     // 6. Let calendarID be ? ToString(yearMonth.[[Calendar]]).
-    auto calendar_id = Value(&year_month.calendar()).to_string(global_object);
-    if (auto* exception = vm.exception())
-        return throw_completion(exception->value());
+    auto calendar_id = TRY(Value(&year_month.calendar()).to_string(global_object));
 
     // 7. If calendarID is not ""iso8601"", then
     if (calendar_id != ""iso8601"") {
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/TimeZone.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/TimeZone.cpp
index 34e87ac539c8..c88f0ff05dc7 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/TimeZone.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/TimeZone.cpp
@@ -338,9 +338,7 @@ ThrowCompletionOr<Object*> to_temporal_time_zone(GlobalObject& global_object, Va
     }
 
     // 2. Let identifier be ? ToString(temporalTimeZoneLike).
-    auto identifier = temporal_time_zone_like.to_string(global_object);
-    if (auto* exception = vm.exception())
-        return throw_completion(exception->value());
+    auto identifier = TRY(temporal_time_zone_like.to_string(global_object));
 
     // 3. Let result be ? ParseTemporalTimeZone(identifier).
     auto result = TRY(parse_temporal_time_zone(global_object, identifier));
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/TimeZoneConstructor.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/TimeZoneConstructor.cpp
index 0767be28fd2f..219397925d08 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/TimeZoneConstructor.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/TimeZoneConstructor.cpp
@@ -49,9 +49,7 @@ Value TimeZoneConstructor::construct(FunctionObject& new_target)
     auto& global_object = this->global_object();
 
     // 2. Set identifier to ? ToString(identifier).
-    auto identifier = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto identifier = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
 
     String canonical;
 
diff --git a/Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.cpp b/Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.cpp
index 6f22ef956f64..c298ecbe06b6 100644
--- a/Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Temporal/TimeZonePrototype.cpp
@@ -45,7 +45,7 @@ JS_DEFINE_NATIVE_FUNCTION(TimeZonePrototype::id_getter)
     auto time_zone = vm.this_value(global_object);
 
     // 2. Return ? ToString(timeZone).
-    return js_string(vm, time_zone.to_string(global_object));
+    return js_string(vm, TRY_OR_DISCARD(time_zone.to_string(global_object)));
 }
 
 // 11.4.4 Temporal.TimeZone.prototype.getOffsetNanosecondsFor ( instant ), https://tc39.es/proposal-temporal/#sec-temporal.timezone.prototype.getoffsetnanosecondsfor
@@ -121,7 +121,7 @@ JS_DEFINE_NATIVE_FUNCTION(TimeZonePrototype::to_json)
     auto time_zone = vm.this_value(global_object);
 
     // 2. Return ? ToString(timeZone).
-    return js_string(vm, time_zone.to_string(global_object));
+    return js_string(vm, TRY_OR_DISCARD(time_zone.to_string(global_object)));
 }
 
 }
diff --git a/Userland/Libraries/LibJS/Runtime/TypedArrayPrototype.cpp b/Userland/Libraries/LibJS/Runtime/TypedArrayPrototype.cpp
index f56da5285ef0..9710b26ff1f4 100644
--- a/Userland/Libraries/LibJS/Runtime/TypedArrayPrototype.cpp
+++ b/Userland/Libraries/LibJS/Runtime/TypedArrayPrototype.cpp
@@ -594,11 +594,8 @@ JS_DEFINE_NATIVE_FUNCTION(TypedArrayPrototype::join)
         return {};
     auto length = typed_array->array_length();
     String separator = "","";
-    if (!vm.argument(0).is_undefined()) {
-        separator = vm.argument(0).to_string(global_object);
-        if (vm.exception())
-            return {};
-    }
+    if (!vm.argument(0).is_undefined())
+        separator = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
 
     StringBuilder builder;
     for (size_t i = 0; i < length; ++i) {
@@ -607,9 +604,7 @@ JS_DEFINE_NATIVE_FUNCTION(TypedArrayPrototype::join)
         auto value = TRY_OR_DISCARD(typed_array->get(i));
         if (value.is_nullish())
             continue;
-        auto string = value.to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto string = TRY_OR_DISCARD(value.to_string(global_object));
         builder.append(string);
     }
 
@@ -1487,9 +1482,7 @@ JS_DEFINE_NATIVE_FUNCTION(TypedArrayPrototype::to_locale_string)
         if (value.is_nullish())
             continue;
         auto locale_string_result = TRY_OR_DISCARD(value.invoke(global_object, vm.names.toLocaleString));
-        auto string = locale_string_result.to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto string = TRY_OR_DISCARD(locale_string_result.to_string(global_object));
         builder.append(string);
     }
     return js_string(vm, builder.to_string());
diff --git a/Userland/Libraries/LibJS/Runtime/Value.cpp b/Userland/Libraries/LibJS/Runtime/Value.cpp
index ff85981e9523..47c8bfc82959 100644
--- a/Userland/Libraries/LibJS/Runtime/Value.cpp
+++ b/Userland/Libraries/LibJS/Runtime/Value.cpp
@@ -17,6 +17,7 @@
 #include <LibJS/Runtime/BigIntObject.h>
 #include <LibJS/Runtime/BooleanObject.h>
 #include <LibJS/Runtime/BoundFunction.h>
+#include <LibJS/Runtime/Completion.h>
 #include <LibJS/Runtime/Error.h>
 #include <LibJS/Runtime/FunctionObject.h>
 #include <LibJS/Runtime/GlobalObject.h>
@@ -326,22 +327,21 @@ PrimitiveString* Value::to_primitive_string(GlobalObject& global_object)
 {
     if (is_string())
         return &as_string();
-    auto string = to_string(global_object);
-    if (global_object.vm().exception())
-        return nullptr;
+    auto string = TRY_OR_DISCARD(to_string(global_object));
     return js_string(global_object.heap(), string);
 }
 
 // 7.1.17 ToString ( argument ), https://tc39.es/ecma262/#sec-tostring
-String Value::to_string(GlobalObject& global_object) const
+ThrowCompletionOr<String> Value::to_string(GlobalObject& global_object) const
 {
+    auto& vm = global_object.vm();
     switch (m_type) {
     case Type::Undefined:
-        return ""undefined"";
+        return { ""undefined""sv };
     case Type::Null:
-        return ""null"";
+        return { ""null""sv };
     case Type::Boolean:
-        return m_value.as_bool ? ""true"" : ""false"";
+        return { m_value.as_bool ? ""true""sv : ""false""sv };
     case Type::Int32:
         return String::number(m_value.as_i32);
     case Type::Double:
@@ -349,14 +349,13 @@ String Value::to_string(GlobalObject& global_object) const
     case Type::String:
         return m_value.as_string->string();
     case Type::Symbol:
-        global_object.vm().throw_exception<TypeError>(global_object, ErrorType::Convert, ""symbol"", ""string"");
-        return {};
+        return vm.throw_completion<TypeError>(global_object, ErrorType::Convert, ""symbol"", ""string"");
     case Type::BigInt:
         return m_value.as_bigint->big_integer().to_base(10);
     case Type::Object: {
         auto primitive_value = to_primitive(global_object, PreferredType::String);
-        if (global_object.vm().exception())
-            return {};
+        if (auto* exception = vm.exception())
+            return throw_completion(exception->value());
         return primitive_value.to_string(global_object);
     }
     default:
@@ -369,10 +368,7 @@ Utf16String Value::to_utf16_string(GlobalObject& global_object) const
     if (m_type == Type::String)
         return m_value.as_string->utf16_string();
 
-    auto utf8_string = to_string(global_object);
-    if (global_object.vm().exception())
-        return {};
-
+    auto utf8_string = TRY_OR_DISCARD(to_string(global_object));
     return Utf16String(utf8_string);
 }
 
@@ -596,7 +592,7 @@ StringOrSymbol Value::to_property_key(GlobalObject& global_object) const
         return {};
     if (key.is_symbol())
         return &key.as_symbol();
-    return key.to_string(global_object);
+    return TRY_OR_DISCARD(key.to_string(global_object));
 }
 
 i32 Value::to_i32_slow_case(GlobalObject& global_object) const
@@ -1100,12 +1096,8 @@ Value add(GlobalObject& global_object, Value lhs, Value rhs)
         }
     }
     if (lhs_primitive.is_string() || rhs_primitive.is_string()) {
-        auto lhs_string = lhs_primitive.to_string(global_object);
-        if (vm.exception())
-            return {};
-        auto rhs_string = rhs_primitive.to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto lhs_string = TRY_OR_DISCARD(lhs_primitive.to_string(global_object));
+        auto rhs_string = TRY_OR_DISCARD(rhs_primitive.to_string(global_object));
         StringBuilder builder(lhs_string.length() + rhs_string.length());
         builder.append(lhs_string);
         builder.append(rhs_string);
diff --git a/Userland/Libraries/LibJS/Runtime/Value.h b/Userland/Libraries/LibJS/Runtime/Value.h
index 6e0757f3db41..77556e96e5c3 100644
--- a/Userland/Libraries/LibJS/Runtime/Value.h
+++ b/Userland/Libraries/LibJS/Runtime/Value.h
@@ -303,7 +303,7 @@ class Value {
 
     u64 encoded() const { return m_value.encoded; }
 
-    String to_string(GlobalObject&) const;
+    ThrowCompletionOr<String> to_string(GlobalObject&) const;
     Utf16String to_utf16_string(GlobalObject&) const;
     PrimitiveString* to_primitive_string(GlobalObject&);
     Value to_primitive(GlobalObject&, PreferredType preferred_type = PreferredType::Default) const;
diff --git a/Userland/Libraries/LibWeb/Bindings/CSSNamespace.cpp b/Userland/Libraries/LibWeb/Bindings/CSSNamespace.cpp
index 2ca4d6f42a47..ec1e3cd395ee 100644
--- a/Userland/Libraries/LibWeb/Bindings/CSSNamespace.cpp
+++ b/Userland/Libraries/LibWeb/Bindings/CSSNamespace.cpp
@@ -38,9 +38,7 @@ JS_DEFINE_NATIVE_FUNCTION(CSSNamespace::escape)
         return {};
     }
 
-    auto identifier = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto identifier = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
 
     return JS::js_string(vm, Web::CSS::serialize_an_identifier(identifier));
 }
@@ -55,17 +53,13 @@ JS_DEFINE_NATIVE_FUNCTION(CSSNamespace::supports)
 
     if (vm.argument_count() >= 2) {
         // When the supports(property, value) method is invoked with two arguments property and value:
-        String property_name = vm.argument(0).to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto property_name = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
 
         // If property is an ASCII case-insensitive match for any defined CSS property that the UA supports,
         // and value successfully parses according to that property’s grammar, return true.
         auto property = CSS::property_id_from_string(property_name);
         if (property != CSS::PropertyID::Invalid) {
-            auto value_string = vm.argument(1).to_string(global_object);
-            if (vm.exception())
-                return {};
+            auto value_string = TRY_OR_DISCARD(vm.argument(1).to_string(global_object));
             if (parse_css_value({}, value_string, property))
                 return JS::Value(true);
         }
@@ -79,9 +73,7 @@ JS_DEFINE_NATIVE_FUNCTION(CSSNamespace::supports)
         return JS::Value(false);
     } else {
         // When the supports(conditionText) method is invoked with a single conditionText argument:
-        String supports_text = vm.argument(0).to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto supports_text = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
 
         // If conditionText, parsed and evaluated as a <supports-condition>, would return true, return true.
         if (auto supports = parse_css_supports({}, supports_text); supports && supports->matches())
diff --git a/Userland/Libraries/LibWeb/Bindings/CSSStyleDeclarationWrapperCustom.cpp b/Userland/Libraries/LibWeb/Bindings/CSSStyleDeclarationWrapperCustom.cpp
index ccdb1ab9326c..92ccd88c5b26 100644
--- a/Userland/Libraries/LibWeb/Bindings/CSSStyleDeclarationWrapperCustom.cpp
+++ b/Userland/Libraries/LibWeb/Bindings/CSSStyleDeclarationWrapperCustom.cpp
@@ -48,9 +48,7 @@ JS::ThrowCompletionOr<bool> CSSStyleDeclarationWrapper::internal_set(JS::Propert
     if (property_id == CSS::PropertyID::Invalid)
         return Base::internal_set(name, value, receiver);
 
-    auto css_text = value.to_string(global_object());
-    if (auto* exception = vm().exception())
-        return JS::throw_completion(exception->value());
+    auto css_text = TRY(value.to_string(global_object()));
 
     impl().set_property(property_id, css_text);
     return true;
diff --git a/Userland/Libraries/LibWeb/Bindings/LocationObject.cpp b/Userland/Libraries/LibWeb/Bindings/LocationObject.cpp
index f09f1778ce2b..f44f7f5bfd0a 100644
--- a/Userland/Libraries/LibWeb/Bindings/LocationObject.cpp
+++ b/Userland/Libraries/LibWeb/Bindings/LocationObject.cpp
@@ -53,9 +53,7 @@ JS_DEFINE_NATIVE_FUNCTION(LocationObject::href_getter)
 JS_DEFINE_NATIVE_FUNCTION(LocationObject::href_setter)
 {
     auto& window = static_cast<WindowObject&>(global_object);
-    auto new_href = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto new_href = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     auto href_url = window.impl().associated_document().parse_url(new_href);
     if (!href_url.is_valid()) {
         vm.throw_exception<JS::URIError>(global_object, String::formatted(""Invalid URL '{}'"", new_href));
@@ -133,9 +131,7 @@ JS_DEFINE_NATIVE_FUNCTION(LocationObject::reload)
 JS_DEFINE_NATIVE_FUNCTION(LocationObject::replace)
 {
     auto& window = static_cast<WindowObject&>(global_object);
-    auto url = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto url = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     // FIXME: This needs spec compliance work.
     window.impl().did_call_location_replace({}, move(url));
     return JS::js_undefined();
diff --git a/Userland/Libraries/LibWeb/Bindings/WindowObject.cpp b/Userland/Libraries/LibWeb/Bindings/WindowObject.cpp
index a3b391bfe608..08ab6e3f6ffb 100644
--- a/Userland/Libraries/LibWeb/Bindings/WindowObject.cpp
+++ b/Userland/Libraries/LibWeb/Bindings/WindowObject.cpp
@@ -190,11 +190,8 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::alert)
     if (!impl)
         return {};
     String message = """";
-    if (vm.argument_count()) {
-        message = vm.argument(0).to_string(global_object);
-        if (vm.exception())
-            return {};
-    }
+    if (vm.argument_count())
+        message = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     impl->alert(message);
     return JS::js_undefined();
 }
@@ -205,11 +202,8 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::confirm)
     if (!impl)
         return {};
     String message = """";
-    if (!vm.argument(0).is_undefined()) {
-        message = vm.argument(0).to_string(global_object);
-        if (vm.exception())
-            return {};
-    }
+    if (!vm.argument(0).is_undefined())
+        message = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     return JS::Value(impl->confirm(message));
 }
 
@@ -220,16 +214,10 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::prompt)
         return {};
     String message = """";
     String default_ = """";
-    if (!vm.argument(0).is_undefined()) {
-        message = vm.argument(0).to_string(global_object);
-        if (vm.exception())
-            return {};
-    }
-    if (!vm.argument(1).is_undefined()) {
-        default_ = vm.argument(1).to_string(global_object);
-        if (vm.exception())
-            return {};
-    }
+    if (!vm.argument(0).is_undefined())
+        message = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
+    if (!vm.argument(1).is_undefined())
+        default_ = TRY_OR_DISCARD(vm.argument(1).to_string(global_object));
     auto response = impl->prompt(message, default_);
     if (response.is_null())
         return JS::js_null();
@@ -252,9 +240,7 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::set_interval)
     if (vm.argument(0).is_function()) {
         callback = &vm.argument(0).as_function();
     } else {
-        auto script_source = vm.argument(0).to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto script_source = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
         // FIXME: This needs more work once we have a environment settings object.
         // The spec wants us to use a task for the ""run function or script string"" part,
         // using a NativeFunction for the latter is a workaround so that we can reuse the
@@ -293,9 +279,7 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::set_timeout)
     if (vm.argument(0).is_function()) {
         callback = &vm.argument(0).as_function();
     } else {
-        auto script_source = vm.argument(0).to_string(global_object);
-        if (vm.exception())
-            return {};
+        auto script_source = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
         // FIXME: This needs more work once we have a environment settings object.
         // The spec wants us to use a task for the ""run function or script string"" part,
         // using a NativeFunction for the latter is a workaround so that we can reuse the
@@ -415,9 +399,7 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::atob)
         vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::BadArgCountOne, ""atob"");
         return {};
     }
-    auto string = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto string = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     auto decoded = decode_base64(StringView(string));
 
     // decode_base64() returns a byte string. LibJS uses UTF-8 for strings. Use Latin1Decoder to convert bytes 128-255 to UTF-8.
@@ -435,9 +417,7 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::btoa)
         vm.throw_exception<JS::TypeError>(global_object, JS::ErrorType::BadArgCountOne, ""btoa"");
         return {};
     }
-    auto string = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto string = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
 
     Vector<u8> byte_string;
     byte_string.ensure_capacity(string.length());
@@ -593,9 +573,7 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::match_media)
     auto* impl = impl_from(vm, global_object);
     if (!impl)
         return {};
-    auto media = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto media = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     return wrap(global_object, impl->match_media(move(media)));
 }
 
@@ -660,9 +638,7 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::scroll)
 
         auto behavior_string_value = TRY_OR_DISCARD(options->get(""behavior""));
         if (!behavior_string_value.is_undefined())
-            behavior_string = behavior_string_value.to_string(global_object);
-        if (vm.exception())
-            return {};
+            behavior_string = TRY_OR_DISCARD(behavior_string_value.to_string(global_object));
         if (behavior_string != ""smooth"" && behavior_string != ""auto"") {
             vm.throw_exception<JS::TypeError>(global_object, ""Behavior is not one of 'smooth' or 'auto'"");
             return {};
@@ -737,9 +713,7 @@ JS_DEFINE_NATIVE_FUNCTION(WindowObject::scroll_by)
     top = top + current_scroll_position.y();
 
     auto behavior_string_value = TRY_OR_DISCARD(options->get(""behavior""));
-    auto behavior_string = behavior_string_value.is_undefined() ? ""auto"" : behavior_string_value.to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto behavior_string = behavior_string_value.is_undefined() ? ""auto"" : TRY_OR_DISCARD(behavior_string_value.to_string(global_object));
     if (behavior_string != ""smooth"" && behavior_string != ""auto"") {
         vm.throw_exception<JS::TypeError>(global_object, ""Behavior is not one of 'smooth' or 'auto'"");
         return {};
diff --git a/Userland/Utilities/js.cpp b/Userland/Utilities/js.cpp
index f7bc449cfc0a..035e58587000 100644
--- a/Userland/Utilities/js.cpp
+++ b/Userland/Utilities/js.cpp
@@ -890,9 +890,7 @@ static bool parse_and_run(JS::Interpreter& interpreter, StringView const& source
 
 static JS::Value load_file_impl(JS::VM& vm, JS::GlobalObject& global_object)
 {
-    auto filename = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto filename = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     auto file = Core::File::construct(filename);
     if (!file->open(Core::OpenMode::ReadOnly)) {
         vm.throw_exception<JS::Error>(global_object, String::formatted(""Failed to open '{}': {}"", filename, file->error_string()));
@@ -914,9 +912,7 @@ static JS::Value load_file_impl(JS::VM& vm, JS::GlobalObject& global_object)
 
 static JS::Value load_json_impl(JS::VM& vm, JS::GlobalObject& global_object)
 {
-    auto filename = vm.argument(0).to_string(global_object);
-    if (vm.exception())
-        return {};
+    auto filename = TRY_OR_DISCARD(vm.argument(0).to_string(global_object));
     auto file = Core::File::construct(filename);
     if (!file->open(Core::OpenMode::ReadOnly)) {
         vm.throw_exception<JS::Error>(global_object, String::formatted(""Failed to open '{}': {}"", filename, file->error_string()));"
b47222978172bcf1a62ee2b6406a7ba1947ab0e6,2019-10-20 00:24:47,Andreas Kling,libhtml: Do DOM tree fixup before firing insertion callbacks,False,Do DOM tree fixup before firing insertion callbacks,libhtml,"diff --git a/Libraries/LibHTML/Parser/HTMLParser.cpp b/Libraries/LibHTML/Parser/HTMLParser.cpp
index 7f0a8c9c2613..705e015bf9ee 100644
--- a/Libraries/LibHTML/Parser/HTMLParser.cpp
+++ b/Libraries/LibHTML/Parser/HTMLParser.cpp
@@ -317,9 +317,7 @@ NonnullRefPtr<Document> parse_html(const StringView& html, const URL& url)
             node.inserted_into(*node.parent());
     };
 
-    fire_insertion_callbacks(*document);
-
     document->fixup();
-
+    fire_insertion_callbacks(*document);
     return document;
 }"
5de5af60c1f34315f6f2546359f35ecee35a3d67,2020-10-04 22:52:02,Linus Groh,libjs: Replace a few dbg() with dbgln(),False,Replace a few dbg() with dbgln(),libjs,"diff --git a/Libraries/LibJS/Heap/Heap.cpp b/Libraries/LibJS/Heap/Heap.cpp
index cbb012763cde..7cde4258888b 100644
--- a/Libraries/LibJS/Heap/Heap.cpp
+++ b/Libraries/LibJS/Heap/Heap.cpp
@@ -285,14 +285,14 @@ void Heap::sweep_dead_cells(bool print_report, const Core::ElapsedTimer& measure
     int time_spent = measurement_timer.elapsed();
 
     if (print_report) {
-        dbg() << ""Garbage collection report"";
-        dbg() << ""============================================="";
-        dbg() << ""     Time spent: "" << time_spent << "" ms"";
-        dbg() << ""     Live cells: "" << live_cells << "" ("" << live_cell_bytes << "" bytes)"";
-        dbg() << ""Collected cells: "" << collected_cells << "" ("" << collected_cell_bytes << "" bytes)"";
-        dbg() << ""    Live blocks: "" << m_blocks.size() << "" ("" << m_blocks.size() * HeapBlock::block_size << "" bytes)"";
-        dbg() << ""   Freed blocks: "" << empty_blocks.size() << "" ("" << empty_blocks.size() * HeapBlock::block_size << "" bytes)"";
-        dbg() << ""============================================="";
+        dbgln(""Garbage collection report"");
+        dbgln(""============================================="");
+        dbgln(""     Time spent: {} ms"", time_spent);
+        dbgln(""     Live cells: {} ({} bytes)"", live_cells, live_cell_bytes);
+        dbgln(""Collected cells: {} ({} bytes)"", collected_cells, collected_cell_bytes);
+        dbgln(""    Live blocks: {} ({} bytes)"", m_blocks.size(), m_blocks.size() * HeapBlock::block_size);
+        dbgln(""   Freed blocks: {} ({} bytes)"", empty_blocks.size(), empty_blocks.size() * HeapBlock::block_size);
+        dbgln(""============================================="");
     }
 }
 
diff --git a/Libraries/LibJS/MarkupGenerator.cpp b/Libraries/LibJS/MarkupGenerator.cpp
index 555c3bdd6d60..f08ab55b0a00 100644
--- a/Libraries/LibJS/MarkupGenerator.cpp
+++ b/Libraries/LibJS/MarkupGenerator.cpp
@@ -331,7 +331,7 @@ MarkupGenerator::StyleType MarkupGenerator::style_type_for_token(Token token)
     case TokenType::Identifier:
         return StyleType::Identifier;
     default:
-        dbg() << ""Unknown style type for token "" << token.name();
+        dbgln(""Unknown style type for token {}"", token.name());
         ASSERT_NOT_REACHED();
     }
 }
diff --git a/Libraries/LibJS/Runtime/VM.cpp b/Libraries/LibJS/Runtime/VM.cpp
index 40c48102fdc0..5791c30b83e3 100644
--- a/Libraries/LibJS/Runtime/VM.cpp
+++ b/Libraries/LibJS/Runtime/VM.cpp
@@ -255,13 +255,13 @@ void VM::throw_exception(Exception* exception)
 #ifdef VM_DEBUG
     if (exception->value().is_object() && exception->value().as_object().is_error()) {
         auto& error = static_cast<Error&>(exception->value().as_object());
-        dbg() << ""Throwing JavaScript Error: "" << error.name() << "", "" << error.message();
+        dbgln(""Throwing JavaScript Error: {}, {}"", error.name(), error.message());
 
         for (ssize_t i = m_call_stack.size() - 1; i >= 0; --i) {
             auto function_name = m_call_stack[i].function_name;
             if (function_name.is_empty())
                 function_name = ""<anonymous>"";
-            dbg() << ""  "" << function_name;
+            dbgln(""  {}"", function_name);
         }
     }
 #endif"
bfe8f312f3674d83f25191ee8acbb71af222697a,2022-01-21 20:14:08,Ali Mohammad Pur,libregex: Correct jump offset to the start of the loop block,False,Correct jump offset to the start of the loop block,libregex,"diff --git a/Tests/LibRegex/Regex.cpp b/Tests/LibRegex/Regex.cpp
index 8b705eb978ed..3123472bc875 100644
--- a/Tests/LibRegex/Regex.cpp
+++ b/Tests/LibRegex/Regex.cpp
@@ -914,6 +914,8 @@ TEST_CASE(optimizer_atomic_groups)
         Tuple { ""(1+)\\1""sv, ""11""sv, true },
         Tuple { ""(1+)1""sv, ""11""sv, true },
         Tuple { ""(1+)0""sv, ""10""sv, true },
+        // Rewrite should not skip over first required iteration of <x>+.
+        Tuple { ""a+""sv, """"sv, false },
     };
 
     for (auto& test : tests) {
diff --git a/Userland/Libraries/LibRegex/RegexOptimizer.cpp b/Userland/Libraries/LibRegex/RegexOptimizer.cpp
index ea2288ded9b2..2dbd96eb1cad 100644
--- a/Userland/Libraries/LibRegex/RegexOptimizer.cpp
+++ b/Userland/Libraries/LibRegex/RegexOptimizer.cpp
@@ -376,7 +376,7 @@ void Regex<Parser>::attempt_rewrite_loops_as_atomic_groups(BasicBlockList const&
             if (candidate.new_target_block.has_value()) {
                 // Insert a fork-stay targeted at the second block.
                 bytecode.insert(candidate.forking_block.start, (ByteCodeValueType)OpCodeId::ForkStay);
-                bytecode.insert(candidate.forking_block.start + 1, candidate.new_target_block->start - candidate.forking_block.start);
+                bytecode.insert(candidate.forking_block.start + 1, candidate.new_target_block->start - candidate.forking_block.start + 2);
                 needed_patches.insert(candidate.forking_block.start, 2u);
             }
         }
@@ -427,9 +427,9 @@ void Regex<Parser>::attempt_rewrite_loops_as_atomic_groups(BasicBlockList const&
                     if (patch_it.key() == ip)
                         return;
 
-                    if (patch_point.value < 0 && target_offset < patch_it.key() && ip > patch_it.key())
+                    if (patch_point.value < 0 && target_offset <= patch_it.key() && ip > patch_it.key())
                         bytecode[patch_point.offset] += (patch_point.should_negate ? 1 : -1) * (*patch_it);
-                    else if (patch_point.value > 0 && target_offset > patch_it.key() && ip < patch_it.key())
+                    else if (patch_point.value > 0 && target_offset >= patch_it.key() && ip < patch_it.key())
                         bytecode[patch_point.offset] += (patch_point.should_negate ? -1 : 1) * (*patch_it);
                 };"
635d4842d1ebf89ff9b5393b4260e6c1250dff7f,2024-11-08 15:51:26,Jonne Ransijn,libweb: Return `CSS::StyleProperties::property` results by reference,False,Return `CSS::StyleProperties::property` results by reference,libweb,"diff --git a/Userland/Libraries/LibWeb/Animations/KeyframeEffect.cpp b/Userland/Libraries/LibWeb/Animations/KeyframeEffect.cpp
index a606ef8f0d99..92c0ce6d0346 100644
--- a/Userland/Libraries/LibWeb/Animations/KeyframeEffect.cpp
+++ b/Userland/Libraries/LibWeb/Animations/KeyframeEffect.cpp
@@ -939,8 +939,8 @@ static CSS::RequiredInvalidationAfterStyleChange compute_required_invalidation(H
         if (!old_and_new_properties.get(i))
             continue;
         auto property_id = static_cast<CSS::PropertyID>(i);
-        auto old_value = old_properties.get(property_id).value_or({});
-        auto new_value = new_properties.get(property_id).value_or({});
+        auto const* old_value = old_properties.get(property_id).value_or({});
+        auto const* new_value = new_properties.get(property_id).value_or({});
         if (!old_value && !new_value)
             continue;
         invalidation |= compute_property_invalidation(property_id, old_value, new_value);
diff --git a/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp b/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
index e90ac84099ec..32f33008ab62 100644
--- a/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
+++ b/Userland/Libraries/LibWeb/CSS/ResolvedCSSStyleDeclaration.cpp
@@ -208,7 +208,7 @@ RefPtr<CSSStyleValue const> ResolvedCSSStyleDeclaration::style_value_for_propert
         return {};
     };
 
-    auto get_computed_value = [this](PropertyID property_id) {
+    auto get_computed_value = [this](PropertyID property_id) -> auto const& {
         if (m_pseudo_element.has_value())
             return m_element->pseudo_element_computed_css_values(m_pseudo_element.value())->property(property_id);
         return m_element->computed_css_values()->property(property_id);
@@ -261,8 +261,8 @@ RefPtr<CSSStyleValue const> ResolvedCSSStyleDeclaration::style_value_for_propert
         // -> line-height
         //    The resolved value is normal if the computed value is normal, or the used value otherwise.
     case PropertyID::LineHeight: {
-        auto line_height = get_computed_value(property_id);
-        if (line_height->is_keyword() && line_height->to_keyword() == Keyword::Normal)
+        auto const& line_height = get_computed_value(property_id);
+        if (line_height.is_keyword() && line_height.to_keyword() == Keyword::Normal)
             return line_height;
         return LengthStyleValue::create(Length::make_px(layout_node.computed_values().line_height()));
     }
@@ -581,14 +581,14 @@ Optional<StyleProperty> ResolvedCSSStyleDeclaration::property(PropertyID propert
         auto style = m_element->document().style_computer().compute_style(const_cast<DOM::Element&>(*m_element), m_pseudo_element);
 
         // FIXME: This is a stopgap until we implement shorthand -> longhand conversion.
-        auto value = style.maybe_null_property(property_id);
+        auto const* value = style.maybe_null_property(property_id);
         if (!value) {
             dbgln(""FIXME: ResolvedCSSStyleDeclaration::property(property_id={:#x}) No value for property ID in newly computed style case."", to_underlying(property_id));
             return {};
         }
         return StyleProperty {
             .property_id = property_id,
-            .value = value.release_nonnull(),
+            .value = *value,
         };
     }
 
@@ -597,7 +597,7 @@ Optional<StyleProperty> ResolvedCSSStyleDeclaration::property(PropertyID propert
         return {};
     return StyleProperty {
         .property_id = property_id,
-        .value = value.release_nonnull(),
+        .value = *value,
     };
 }
 
diff --git a/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp b/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
index 61c03d1ac17c..0baad2aedaf3 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleComputer.cpp
@@ -1182,9 +1182,9 @@ static void compute_transitioned_properties(StyleProperties const& style, DOM::E
     element.clear_transitions();
     element.set_cached_transition_property_source(*source_declaration);
 
-    auto transition_properties_value = style.property(PropertyID::TransitionProperty);
-    auto transition_properties = transition_properties_value->is_value_list()
-        ? transition_properties_value->as_value_list().values()
+    auto const& transition_properties_value = style.property(PropertyID::TransitionProperty);
+    auto transition_properties = transition_properties_value.is_value_list()
+        ? transition_properties_value.as_value_list().values()
         : StyleValueVector { transition_properties_value };
 
     Vector<Vector<PropertyID>> properties;
@@ -1219,7 +1219,7 @@ static void compute_transitioned_properties(StyleProperties const& style, DOM::E
     }
 
     auto normalize_transition_length_list = [&properties, &style](PropertyID property, auto make_default_value) {
-        auto style_value = style.maybe_null_property(property);
+        auto const* style_value = style.maybe_null_property(property);
         StyleValueVector list;
 
         if (!style_value || !style_value->is_value_list() || style_value->as_value_list().size() == 0) {
@@ -1268,14 +1268,14 @@ void StyleComputer::start_needed_transitions(StyleProperties const& previous_sty
     for (auto i = to_underlying(CSS::first_longhand_property_id); i <= to_underlying(CSS::last_longhand_property_id); ++i) {
         auto property_id = static_cast<CSS::PropertyID>(i);
         auto matching_transition_properties = element.property_transition_attributes(property_id);
-        auto before_change_value = previous_style.property(property_id, StyleProperties::WithAnimationsApplied::No);
-        auto after_change_value = new_style.property(property_id, StyleProperties::WithAnimationsApplied::No);
+        auto const& before_change_value = previous_style.property(property_id, StyleProperties::WithAnimationsApplied::No);
+        auto const& after_change_value = new_style.property(property_id, StyleProperties::WithAnimationsApplied::No);
 
         auto existing_transition = element.property_transition(property_id);
         bool has_running_transition = existing_transition && !existing_transition->is_finished();
         bool has_completed_transition = existing_transition && existing_transition->is_finished();
 
-        auto start_a_transition = [&](auto start_time, auto end_time, auto start_value, auto end_value, auto reversing_adjusted_start_value, auto reversing_shortening_factor) {
+        auto start_a_transition = [&](auto start_time, auto end_time, auto const& start_value, auto const& end_value, auto const& reversing_adjusted_start_value, auto reversing_shortening_factor) {
             dbgln_if(CSS_TRANSITIONS_DEBUG, ""Starting a transition of {} from {} to {}"", string_from_property_id(property_id), start_value->to_string(), end_value->to_string());
 
             auto transition = CSSTransition::start_a_transition(element, property_id, document().transition_generation(),
@@ -1289,7 +1289,7 @@ void StyleComputer::start_needed_transitions(StyleProperties const& previous_sty
             // - the element does not have a running transition for the property,
             (!has_running_transition) &&
             // - the before-change style is different from the after-change style for that property, and the values for the property are transitionable,
-            (!before_change_value->equals(after_change_value) && property_values_are_transitionable(property_id, before_change_value, after_change_value)) &&
+            (!before_change_value.equals(after_change_value) && property_values_are_transitionable(property_id, before_change_value, after_change_value)) &&
             // - the element does not have a completed transition for the property
             //   or the end value of the completed transition is different from the after-change style for the property,
             (!has_completed_transition || !existing_transition->transition_end_value()->equals(after_change_value)) &&
@@ -1312,13 +1312,13 @@ void StyleComputer::start_needed_transitions(StyleProperties const& previous_sty
             auto end_time = start_time + matching_transition_properties->duration;
 
             // - start value is the value of the transitioning property in the before-change style,
-            auto start_value = before_change_value;
+            auto const& start_value = before_change_value;
 
             // - end value is the value of the transitioning property in the after-change style,
-            auto end_value = after_change_value;
+            auto const& end_value = after_change_value;
 
             // - reversing-adjusted start value is the same as the start value, and
-            auto reversing_adjusted_start_value = start_value;
+            auto const& reversing_adjusted_start_value = start_value;
 
             // - reversing shortening factor is 1.
             double reversing_shortening_factor = 1;
@@ -1349,7 +1349,7 @@ void StyleComputer::start_needed_transitions(StyleProperties const& previous_sty
         //    there is a matching transition-property value,
         //    and the end value of the running transition is not equal to the value of the property in the after-change style, then:
         if (has_running_transition && matching_transition_properties.has_value() && !existing_transition->transition_end_value()->equals(after_change_value)) {
-            dbgln_if(CSS_TRANSITIONS_DEBUG, ""Transition step 4. existing end value = {}, after change value = {}"", existing_transition->transition_end_value()->to_string(), after_change_value->to_string());
+            dbgln_if(CSS_TRANSITIONS_DEBUG, ""Transition step 4. existing end value = {}, after change value = {}"", existing_transition->transition_end_value()->to_string(), after_change_value.to_string());
             // 1. If the current value of the property in the running transition is equal to the value of the property in the after-change style,
             //    or if these two values are not transitionable,
             //    then implementations must cancel the running transition.
@@ -1401,10 +1401,10 @@ void StyleComputer::start_needed_transitions(StyleProperties const& previous_sty
                 auto end_time = start_time + (matching_transition_properties->duration * reversing_shortening_factor);
 
                 // - start value is the current value of the property in the running transition,
-                auto start_value = current_value;
+                auto const& start_value = current_value;
 
                 // - end value is the value of the property in the after-change style,
-                auto end_value = after_change_value;
+                auto const& end_value = after_change_value;
 
                 start_a_transition(start_time, end_time, start_value, end_value, reversing_adjusted_start_value, reversing_shortening_factor);
             }
@@ -1425,13 +1425,13 @@ void StyleComputer::start_needed_transitions(StyleProperties const& previous_sty
                 auto end_time = start_time + matching_transition_properties->duration;
 
                 // - start value is the current value of the property in the running transition,
-                auto start_value = current_value;
+                auto const& start_value = current_value;
 
                 // - end value is the value of the property in the after-change style,
-                auto end_value = after_change_value;
+                auto const& end_value = after_change_value;
 
                 // - reversing-adjusted start value is the same as the start value, and
-                auto reversing_adjusted_start_value = start_value;
+                auto const& reversing_adjusted_start_value = start_value;
 
                 // - reversing shortening factor is 1.
                 double reversing_shortening_factor = 1;
@@ -1528,8 +1528,8 @@ void StyleComputer::compute_cascaded_values(StyleProperties& style, DOM::Element
 
     // Animation declarations [css-animations-2]
     auto animation_name = [&]() -> Optional<String> {
-        auto animation_name = style.maybe_null_property(PropertyID::AnimationName);
-        if (animation_name.is_null())
+        auto const* animation_name = style.maybe_null_property(PropertyID::AnimationName);
+        if (!animation_name)
             return OptionalNone {};
         if (animation_name->is_string())
             return animation_name->as_string().string_value().to_string();
@@ -1687,20 +1687,20 @@ void StyleComputer::compute_defaulted_values(StyleProperties& style, DOM::Elemen
 
     // https://www.w3.org/TR/css-color-4/#resolving-other-colors
     // In the color property, the used value of currentcolor is the inherited value.
-    auto color = style.property(CSS::PropertyID::Color);
-    if (color->to_keyword() == Keyword::Currentcolor) {
-        color = get_inherit_value(document().realm(), CSS::PropertyID::Color, element, pseudo_element);
-        style.set_property(CSS::PropertyID::Color, color);
+    auto const& color = style.property(CSS::PropertyID::Color);
+    if (color.to_keyword() == Keyword::Currentcolor) {
+        auto const& inherited_value = get_inherit_value(document().realm(), CSS::PropertyID::Color, element, pseudo_element);
+        style.set_property(CSS::PropertyID::Color, inherited_value);
     }
 }
 
 Length::FontMetrics StyleComputer::calculate_root_element_font_metrics(StyleProperties const& style) const
 {
-    auto root_value = style.property(CSS::PropertyID::FontSize);
+    auto const& root_value = style.property(CSS::PropertyID::FontSize);
 
     auto font_pixel_metrics = style.first_available_computed_font().pixel_metrics();
     Length::FontMetrics font_metrics { m_default_font_metrics.font_size, font_pixel_metrics };
-    font_metrics.font_size = root_value->as_length().length().to_px(viewport_rect(), font_metrics, font_metrics);
+    font_metrics.font_size = root_value.as_length().length().to_px(viewport_rect(), font_metrics, font_metrics);
     font_metrics.line_height = style.compute_line_height(viewport_rect(), font_metrics, font_metrics);
 
     return font_metrics;
@@ -1823,9 +1823,9 @@ RefPtr<Gfx::FontCascadeList const> StyleComputer::compute_font_for_style_values(
     auto parent_font_size = [&]() -> CSSPixels {
         if (!parent_element || !parent_element->computed_css_values().has_value())
             return font_size_in_px;
-        auto value = parent_element->computed_css_values()->property(CSS::PropertyID::FontSize);
-        if (value->is_length()) {
-            auto length = value->as_length().length();
+        auto const& value = parent_element->computed_css_values()->property(CSS::PropertyID::FontSize);
+        if (value.is_length()) {
+            auto length = value.as_length().length();
             if (length.is_absolute() || length.is_relative()) {
                 Length::FontMetrics font_metrics { font_size_in_px, font_pixel_metrics };
                 return length.to_px(viewport_rect(), font_metrics, m_root_element_font_metrics);
@@ -2064,11 +2064,11 @@ void StyleComputer::compute_font(StyleProperties& style, DOM::Element const* ele
     compute_defaulted_property_value(style, element, CSS::PropertyID::FontWeight, pseudo_element);
     compute_defaulted_property_value(style, element, CSS::PropertyID::LineHeight, pseudo_element);
 
-    auto font_family = style.property(CSS::PropertyID::FontFamily);
-    auto font_size = style.property(CSS::PropertyID::FontSize);
-    auto font_style = style.property(CSS::PropertyID::FontStyle);
-    auto font_weight = style.property(CSS::PropertyID::FontWeight);
-    auto font_width = style.property(CSS::PropertyID::FontWidth);
+    auto const& font_family = style.property(CSS::PropertyID::FontFamily);
+    auto const& font_size = style.property(CSS::PropertyID::FontSize);
+    auto const& font_style = style.property(CSS::PropertyID::FontStyle);
+    auto const& font_weight = style.property(CSS::PropertyID::FontWeight);
+    auto const& font_width = style.property(CSS::PropertyID::FontWidth);
 
     auto font_list = compute_font_for_style_values(element, pseudo_element, font_family, font_size, font_style, font_weight, font_width, style.math_depth());
     VERIFY(font_list);
@@ -2077,7 +2077,7 @@ void StyleComputer::compute_font(StyleProperties& style, DOM::Element const* ele
     RefPtr<Gfx::Font const> const found_font = font_list->first();
 
     style.set_property(CSS::PropertyID::FontSize, LengthStyleValue::create(CSS::Length::make_px(CSSPixels::nearest_value_for(found_font->pixel_size()))));
-    style.set_property(CSS::PropertyID::FontWeight, NumberStyleValue::create(font_weight->to_font_weight()));
+    style.set_property(CSS::PropertyID::FontWeight, NumberStyleValue::create(font_weight.to_font_weight()));
 
     style.set_computed_font_list(*font_list);
 
@@ -2099,7 +2099,7 @@ void StyleComputer::absolutize_values(StyleProperties& style) const
         style.first_available_computed_font().pixel_metrics()
     };
 
-    auto font_size = style.property(CSS::PropertyID::FontSize)->as_length().length().to_px(viewport_rect(), font_metrics, m_root_element_font_metrics);
+    auto font_size = style.property(CSS::PropertyID::FontSize).as_length().length().to_px(viewport_rect(), font_metrics, m_root_element_font_metrics);
     font_metrics.font_size = font_size;
 
     // NOTE: Percentage line-height values are relative to the font-size of the element.
@@ -2134,8 +2134,8 @@ void StyleComputer::resolve_effective_overflow_values(StyleProperties& style) co
     // https://www.w3.org/TR/css-overflow-3/#overflow-control
     // The visible/clip values of overflow compute to auto/hidden (respectively) if one of overflow-x or
     // overflow-y is neither visible nor clip.
-    auto overflow_x = keyword_to_overflow(style.property(PropertyID::OverflowX)->to_keyword());
-    auto overflow_y = keyword_to_overflow(style.property(PropertyID::OverflowY)->to_keyword());
+    auto overflow_x = keyword_to_overflow(style.property(PropertyID::OverflowX).to_keyword());
+    auto overflow_y = keyword_to_overflow(style.property(PropertyID::OverflowY).to_keyword());
     auto overflow_x_is_visible_or_clip = overflow_x == Overflow::Visible || overflow_x == Overflow::Clip;
     auto overflow_y_is_visible_or_clip = overflow_y == Overflow::Visible || overflow_y == Overflow::Clip;
     if (!overflow_x_is_visible_or_clip || !overflow_y_is_visible_or_clip) {
@@ -2838,12 +2838,12 @@ void StyleComputer::compute_math_depth(StyleProperties& style, DOM::Element cons
         return element->parent_element()->computed_css_values()->math_depth();
     };
 
-    auto value = style.property(CSS::PropertyID::MathDepth);
-    if (!value->is_math_depth()) {
+    auto const& value = style.property(CSS::PropertyID::MathDepth);
+    if (!value.is_math_depth()) {
         style.set_math_depth(inherited_math_depth());
         return;
     }
-    auto& math_depth = value->as_math_depth();
+    auto const& math_depth = value.as_math_depth();
 
     auto resolve_integer = [&](CSSStyleValue const& integer_value) {
         if (integer_value.is_integer())
@@ -2856,7 +2856,7 @@ void StyleComputer::compute_math_depth(StyleProperties& style, DOM::Element cons
     // The computed value of the math-depth value is determined as follows:
     // - If the specified value of math-depth is auto-add and the inherited value of math-style is compact
     //   then the computed value of math-depth of the element is its inherited value plus one.
-    if (math_depth.is_auto_add() && style.property(CSS::PropertyID::MathStyle)->to_keyword() == Keyword::Compact) {
+    if (math_depth.is_auto_add() && style.property(CSS::PropertyID::MathStyle).to_keyword() == Keyword::Compact) {
         style.set_math_depth(inherited_math_depth() + 1);
         return;
     }
diff --git a/Userland/Libraries/LibWeb/CSS/StyleProperties.cpp b/Userland/Libraries/LibWeb/CSS/StyleProperties.cpp
index f5677900b738..c1785e7db908 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleProperties.cpp
+++ b/Userland/Libraries/LibWeb/CSS/StyleProperties.cpp
@@ -5,6 +5,7 @@
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
+#include <AK/NonnullRawPtr.h>
 #include <AK/TypeCasts.h>
 #include <LibCore/DirIterator.h>
 #include <LibWeb/CSS/Clip.h>
@@ -108,29 +109,29 @@ void StyleProperties::reset_animated_properties()
     m_data->m_animated_property_values.clear();
 }
 
-NonnullRefPtr<CSSStyleValue const> StyleProperties::property(CSS::PropertyID property_id, WithAnimationsApplied return_animated_value) const
+CSSStyleValue const& StyleProperties::property(CSS::PropertyID property_id, WithAnimationsApplied return_animated_value) const
 {
     if (return_animated_value == WithAnimationsApplied::Yes) {
-        if (auto animated_value = m_data->m_animated_property_values.get(property_id).value_or(nullptr))
-            return *animated_value;
+        if (auto animated_value = m_data->m_animated_property_values.get(property_id); animated_value.has_value())
+            return *animated_value.value();
     }
 
     // By the time we call this method, all properties have values assigned.
     return *m_data->m_property_values[to_underlying(property_id)];
 }
 
-RefPtr<CSSStyleValue const> StyleProperties::maybe_null_property(CSS::PropertyID property_id) const
+CSSStyleValue const* StyleProperties::maybe_null_property(CSS::PropertyID property_id) const
 {
-    if (auto animated_value = m_data->m_animated_property_values.get(property_id).value_or(nullptr))
-        return *animated_value;
+    if (auto animated_value = m_data->m_animated_property_values.get(property_id); animated_value.has_value())
+        return animated_value.value();
     return m_data->m_property_values[to_underlying(property_id)];
 }
 
 CSS::Size StyleProperties::size_value(CSS::PropertyID id) const
 {
-    auto value = property(id);
-    if (value->is_keyword()) {
-        switch (value->to_keyword()) {
+    auto const& value = property(id);
+    if (value.is_keyword()) {
+        switch (value.to_keyword()) {
         case Keyword::Auto:
             return CSS::Size::make_auto();
         case Keyword::MinContent:
@@ -146,21 +147,21 @@ CSS::Size StyleProperties::size_value(CSS::PropertyID id) const
         }
     }
 
-    if (value->is_math())
-        return CSS::Size::make_calculated(const_cast<CSSMathValue&>(value->as_math()));
+    if (value.is_math())
+        return CSS::Size::make_calculated(const_cast<CSSMathValue&>(value.as_math()));
 
-    if (value->is_percentage())
-        return CSS::Size::make_percentage(value->as_percentage().percentage());
+    if (value.is_percentage())
+        return CSS::Size::make_percentage(value.as_percentage().percentage());
 
-    if (value->is_length()) {
-        auto length = value->as_length().length();
+    if (value.is_length()) {
+        auto length = value.as_length().length();
         if (length.is_auto())
             return CSS::Size::make_auto();
         return CSS::Size::make_length(length);
     }
 
     // FIXME: Support `fit-content(<length>)`
-    dbgln(""FIXME: Unsupported size value: `{}`, treating as `auto`"", value->to_string());
+    dbgln(""FIXME: Unsupported size value: `{}`, treating as `auto`"", value.to_string());
     return CSS::Size::make_auto();
 }
 
@@ -171,18 +172,18 @@ LengthPercentage StyleProperties::length_percentage_or_fallback(CSS::PropertyID
 
 Optional<LengthPercentage> StyleProperties::length_percentage(CSS::PropertyID id) const
 {
-    auto value = property(id);
+    auto const& value = property(id);
 
-    if (value->is_math())
-        return LengthPercentage { const_cast<CSSMathValue&>(value->as_math()) };
+    if (value.is_math())
+        return LengthPercentage { const_cast<CSSMathValue&>(value.as_math()) };
 
-    if (value->is_percentage())
-        return value->as_percentage().percentage();
+    if (value.is_percentage())
+        return value.as_percentage().percentage();
 
-    if (value->is_length())
-        return value->as_length().length();
+    if (value.is_length())
+        return value.as_length().length();
 
-    if (value->has_auto())
+    if (value.has_auto())
         return LengthPercentage { Length::make_auto() };
 
     return {};
@@ -200,10 +201,10 @@ LengthBox StyleProperties::length_box(CSS::PropertyID left_id, CSS::PropertyID t
 
 Color StyleProperties::color_or_fallback(CSS::PropertyID id, Layout::NodeWithStyle const& node, Color fallback) const
 {
-    auto value = property(id);
-    if (!value->has_color())
+    auto const& value = property(id);
+    if (!value.has_color())
         return fallback;
-    return value->to_color(node);
+    return value.to_color(node);
 }
 
 NonnullRefPtr<Gfx::Font const> StyleProperties::font_fallback(bool monospace, bool bold)
@@ -222,39 +223,39 @@ NonnullRefPtr<Gfx::Font const> StyleProperties::font_fallback(bool monospace, bo
 
 CSSPixels StyleProperties::compute_line_height(CSSPixelRect const& viewport_rect, Length::FontMetrics const& font_metrics, Length::FontMetrics const& root_font_metrics) const
 {
-    auto line_height = property(CSS::PropertyID::LineHeight);
+    auto const& line_height = property(CSS::PropertyID::LineHeight);
 
-    if (line_height->is_keyword() && line_height->to_keyword() == Keyword::Normal)
+    if (line_height.is_keyword() && line_height.to_keyword() == Keyword::Normal)
         return font_metrics.line_height;
 
-    if (line_height->is_length()) {
-        auto line_height_length = line_height->as_length().length();
+    if (line_height.is_length()) {
+        auto line_height_length = line_height.as_length().length();
         if (!line_height_length.is_auto())
             return line_height_length.to_px(viewport_rect, font_metrics, root_font_metrics);
     }
 
-    if (line_height->is_number())
-        return Length(line_height->as_number().number(), Length::Type::Em).to_px(viewport_rect, font_metrics, root_font_metrics);
+    if (line_height.is_number())
+        return Length(line_height.as_number().number(), Length::Type::Em).to_px(viewport_rect, font_metrics, root_font_metrics);
 
-    if (line_height->is_percentage()) {
+    if (line_height.is_percentage()) {
         // Percentages are relative to 1em. https://www.w3.org/TR/css-inline-3/#valdef-line-height-percentage
-        auto& percentage = line_height->as_percentage().percentage();
+        auto const& percentage = line_height.as_percentage().percentage();
         return Length(percentage.as_fraction(), Length::Type::Em).to_px(viewport_rect, font_metrics, root_font_metrics);
     }
 
-    if (line_height->is_math()) {
-        if (line_height->as_math().resolves_to_number()) {
-            auto resolved = line_height->as_math().resolve_number();
+    if (line_height.is_math()) {
+        if (line_height.as_math().resolves_to_number()) {
+            auto resolved = line_height.as_math().resolve_number();
             if (!resolved.has_value()) {
-                dbgln(""FIXME: Failed to resolve calc() line-height (number): {}"", line_height->as_math().to_string());
+                dbgln(""FIXME: Failed to resolve calc() line-height (number): {}"", line_height.as_math().to_string());
                 return CSSPixels::nearest_value_for(m_data->m_font_list->first().pixel_metrics().line_spacing());
             }
             return Length(resolved.value(), Length::Type::Em).to_px(viewport_rect, font_metrics, root_font_metrics);
         }
 
-        auto resolved = line_height->as_math().resolve_length(Length::ResolutionContext { viewport_rect, font_metrics, root_font_metrics });
+        auto resolved = line_height.as_math().resolve_length(Length::ResolutionContext { viewport_rect, font_metrics, root_font_metrics });
         if (!resolved.has_value()) {
-            dbgln(""FIXME: Failed to resolve calc() line-height: {}"", line_height->as_math().to_string());
+            dbgln(""FIXME: Failed to resolve calc() line-height: {}"", line_height.as_math().to_string());
             return CSSPixels::nearest_value_for(m_data->m_font_list->first().pixel_metrics().line_spacing());
         }
         return resolved->to_px(viewport_rect, font_metrics, root_font_metrics);
@@ -265,12 +266,12 @@ CSSPixels StyleProperties::compute_line_height(CSSPixelRect const& viewport_rect
 
 Optional<int> StyleProperties::z_index() const
 {
-    auto value = property(CSS::PropertyID::ZIndex);
-    if (value->has_auto())
+    auto const& value = property(CSS::PropertyID::ZIndex);
+    if (value.has_auto())
         return {};
-    if (value->is_integer()) {
+    if (value.is_integer()) {
         // Clamp z-index to the range of a signed 32-bit integer for consistency with other engines.
-        auto integer = value->as_integer().integer();
+        auto integer = value.as_integer().integer();
         if (integer >= NumericLimits<int>::max())
             return NumericLimits<int>::max();
         if (integer <= NumericLimits<int>::min())
@@ -287,7 +288,7 @@ float StyleProperties::resolve_opacity_value(CSSStyleValue const& value)
     if (value.is_number()) {
         unclamped_opacity = value.as_number().number();
     } else if (value.is_math()) {
-        auto& calculated = value.as_math();
+        auto const& calculated = value.as_math();
         if (calculated.resolves_to_percentage()) {
             auto maybe_percentage = value.as_math().resolve_percentage();
             if (maybe_percentage.has_value())
@@ -310,82 +311,82 @@ float StyleProperties::resolve_opacity_value(CSSStyleValue const& value)
 
 float StyleProperties::opacity() const
 {
-    auto value = property(CSS::PropertyID::Opacity);
-    return resolve_opacity_value(*value);
+    auto const& value = property(CSS::PropertyID::Opacity);
+    return resolve_opacity_value(value);
 }
 
 float StyleProperties::fill_opacity() const
 {
-    auto value = property(CSS::PropertyID::FillOpacity);
-    return resolve_opacity_value(*value);
+    auto const& value = property(CSS::PropertyID::FillOpacity);
+    return resolve_opacity_value(value);
 }
 
 Optional<CSS::StrokeLinecap> StyleProperties::stroke_linecap() const
 {
-    auto value = property(CSS::PropertyID::StrokeLinecap);
-    return keyword_to_stroke_linecap(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::StrokeLinecap);
+    return keyword_to_stroke_linecap(value.to_keyword());
 }
 
 Optional<CSS::StrokeLinejoin> StyleProperties::stroke_linejoin() const
 {
-    auto value = property(CSS::PropertyID::StrokeLinejoin);
-    return keyword_to_stroke_linejoin(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::StrokeLinejoin);
+    return keyword_to_stroke_linejoin(value.to_keyword());
 }
 
 NumberOrCalculated StyleProperties::stroke_miterlimit() const
 {
-    auto value = property(CSS::PropertyID::StrokeMiterlimit);
+    auto const& value = property(CSS::PropertyID::StrokeMiterlimit);
 
-    if (value->is_math()) {
-        auto const& math_value = value->as_math();
+    if (value.is_math()) {
+        auto const& math_value = value.as_math();
         VERIFY(math_value.resolves_to_number());
         return NumberOrCalculated { math_value };
     }
 
-    return NumberOrCalculated { value->as_number().number() };
+    return NumberOrCalculated { value.as_number().number() };
 }
 
 float StyleProperties::stroke_opacity() const
 {
-    auto value = property(CSS::PropertyID::StrokeOpacity);
-    return resolve_opacity_value(*value);
+    auto const& value = property(CSS::PropertyID::StrokeOpacity);
+    return resolve_opacity_value(value);
 }
 
 float StyleProperties::stop_opacity() const
 {
-    auto value = property(CSS::PropertyID::StopOpacity);
-    return resolve_opacity_value(*value);
+    auto const& value = property(CSS::PropertyID::StopOpacity);
+    return resolve_opacity_value(value);
 }
 
 Optional<CSS::FillRule> StyleProperties::fill_rule() const
 {
-    auto value = property(CSS::PropertyID::FillRule);
-    return keyword_to_fill_rule(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::FillRule);
+    return keyword_to_fill_rule(value.to_keyword());
 }
 
 Optional<CSS::ClipRule> StyleProperties::clip_rule() const
 {
-    auto value = property(CSS::PropertyID::ClipRule);
-    return keyword_to_fill_rule(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::ClipRule);
+    return keyword_to_fill_rule(value.to_keyword());
 }
 
 Optional<CSS::FlexDirection> StyleProperties::flex_direction() const
 {
-    auto value = property(CSS::PropertyID::FlexDirection);
-    return keyword_to_flex_direction(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::FlexDirection);
+    return keyword_to_flex_direction(value.to_keyword());
 }
 
 Optional<CSS::FlexWrap> StyleProperties::flex_wrap() const
 {
-    auto value = property(CSS::PropertyID::FlexWrap);
-    return keyword_to_flex_wrap(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::FlexWrap);
+    return keyword_to_flex_wrap(value.to_keyword());
 }
 
 Optional<CSS::FlexBasis> StyleProperties::flex_basis() const
 {
-    auto value = property(CSS::PropertyID::FlexBasis);
+    auto const& value = property(CSS::PropertyID::FlexBasis);
 
-    if (value->is_keyword() && value->to_keyword() == CSS::Keyword::Content)
+    if (value.is_keyword() && value.to_keyword() == CSS::Keyword::Content)
         return CSS::FlexBasisContent {};
 
     return size_value(CSS::PropertyID::FlexBasis);
@@ -393,86 +394,86 @@ Optional<CSS::FlexBasis> StyleProperties::flex_basis() const
 
 float StyleProperties::flex_grow() const
 {
-    auto value = property(CSS::PropertyID::FlexGrow);
-    if (!value->is_number())
+    auto const& value = property(CSS::PropertyID::FlexGrow);
+    if (!value.is_number())
         return 0;
-    return value->as_number().number();
+    return value.as_number().number();
 }
 
 float StyleProperties::flex_shrink() const
 {
-    auto value = property(CSS::PropertyID::FlexShrink);
-    if (!value->is_number())
+    auto const& value = property(CSS::PropertyID::FlexShrink);
+    if (!value.is_number())
         return 1;
-    return value->as_number().number();
+    return value.as_number().number();
 }
 
 int StyleProperties::order() const
 {
-    auto value = property(CSS::PropertyID::Order);
-    if (!value->is_integer())
+    auto const& value = property(CSS::PropertyID::Order);
+    if (!value.is_integer())
         return 0;
-    return value->as_integer().integer();
+    return value.as_integer().integer();
 }
 
 Optional<CSS::ImageRendering> StyleProperties::image_rendering() const
 {
-    auto value = property(CSS::PropertyID::ImageRendering);
-    return keyword_to_image_rendering(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::ImageRendering);
+    return keyword_to_image_rendering(value.to_keyword());
 }
 
 CSS::Length StyleProperties::border_spacing_horizontal(Layout::Node const& layout_node) const
 {
-    auto value = property(CSS::PropertyID::BorderSpacing);
-    if (value->is_length())
-        return value->as_length().length();
-    if (value->is_math())
-        return value->as_math().resolve_length(layout_node).value_or(CSS::Length(0, CSS::Length::Type::Px));
-    auto const& list = value->as_value_list();
+    auto const& value = property(CSS::PropertyID::BorderSpacing);
+    if (value.is_length())
+        return value.as_length().length();
+    if (value.is_math())
+        return value.as_math().resolve_length(layout_node).value_or(CSS::Length(0, CSS::Length::Type::Px));
+    auto const& list = value.as_value_list();
     return list.value_at(0, false)->as_length().length();
 }
 
 CSS::Length StyleProperties::border_spacing_vertical(Layout::Node const& layout_node) const
 {
-    auto value = property(CSS::PropertyID::BorderSpacing);
-    if (value->is_length())
-        return value->as_length().length();
-    if (value->is_math())
-        return value->as_math().resolve_length(layout_node).value_or(CSS::Length(0, CSS::Length::Type::Px));
-    auto const& list = value->as_value_list();
+    auto const& value = property(CSS::PropertyID::BorderSpacing);
+    if (value.is_length())
+        return value.as_length().length();
+    if (value.is_math())
+        return value.as_math().resolve_length(layout_node).value_or(CSS::Length(0, CSS::Length::Type::Px));
+    auto const& list = value.as_value_list();
     return list.value_at(1, false)->as_length().length();
 }
 
 Optional<CSS::CaptionSide> StyleProperties::caption_side() const
 {
-    auto value = property(CSS::PropertyID::CaptionSide);
-    return keyword_to_caption_side(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::CaptionSide);
+    return keyword_to_caption_side(value.to_keyword());
 }
 
 CSS::Clip StyleProperties::clip() const
 {
-    auto value = property(CSS::PropertyID::Clip);
-    if (!value->is_rect())
+    auto const& value = property(CSS::PropertyID::Clip);
+    if (!value.is_rect())
         return CSS::Clip::make_auto();
-    return CSS::Clip(value->as_rect().rect());
+    return CSS::Clip(value.as_rect().rect());
 }
 
 Optional<CSS::JustifyContent> StyleProperties::justify_content() const
 {
-    auto value = property(CSS::PropertyID::JustifyContent);
-    return keyword_to_justify_content(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::JustifyContent);
+    return keyword_to_justify_content(value.to_keyword());
 }
 
 Optional<CSS::JustifyItems> StyleProperties::justify_items() const
 {
-    auto value = property(CSS::PropertyID::JustifyItems);
-    return keyword_to_justify_items(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::JustifyItems);
+    return keyword_to_justify_items(value.to_keyword());
 }
 
 Optional<CSS::JustifySelf> StyleProperties::justify_self() const
 {
-    auto value = property(CSS::PropertyID::JustifySelf);
-    return keyword_to_justify_self(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::JustifySelf);
+    return keyword_to_justify_self(value.to_keyword());
 }
 
 Vector<CSS::Transformation> StyleProperties::transformations_for_style_value(CSSStyleValue const& value)
@@ -543,10 +544,10 @@ Vector<CSS::Transformation> StyleProperties::transformations() const
 
 Optional<CSS::Transformation> StyleProperties::rotate(Layout::Node const& layout_node) const
 {
-    auto value = property(CSS::PropertyID::Rotate);
-    if (!value->is_rotation())
+    auto const& value = property(CSS::PropertyID::Rotate);
+    if (!value.is_rotation())
         return {};
-    auto& rotation = value->as_rotation();
+    auto& rotation = value.as_rotation();
 
     auto resolve_angle = [&layout_node](CSSStyleValue const& value) -> Optional<Angle> {
         if (value.is_angle())
@@ -591,16 +592,16 @@ static Optional<LengthPercentage> length_percentage_for_style_value(CSSStyleValu
 
 Optional<CSS::TransformBox> StyleProperties::transform_box() const
 {
-    auto value = property(CSS::PropertyID::TransformBox);
-    return keyword_to_transform_box(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::TransformBox);
+    return keyword_to_transform_box(value.to_keyword());
 }
 
 CSS::TransformOrigin StyleProperties::transform_origin() const
 {
-    auto value = property(CSS::PropertyID::TransformOrigin);
-    if (!value->is_value_list() || value->as_value_list().size() != 2)
+    auto const& value = property(CSS::PropertyID::TransformOrigin);
+    if (!value.is_value_list() || value.as_value_list().size() != 2)
         return {};
-    auto const& list = value->as_value_list();
+    auto const& list = value.as_value_list();
     auto x_value = length_percentage_for_style_value(list.values()[0]);
     auto y_value = length_percentage_for_style_value(list.values()[1]);
     if (!x_value.has_value() || !y_value.has_value()) {
@@ -611,34 +612,34 @@ CSS::TransformOrigin StyleProperties::transform_origin() const
 
 Optional<Color> StyleProperties::accent_color(Layout::NodeWithStyle const& node) const
 {
-    auto value = property(CSS::PropertyID::AccentColor);
-    if (value->has_color())
-        return value->to_color(node);
+    auto const& value = property(CSS::PropertyID::AccentColor);
+    if (value.has_color())
+        return value.to_color(node);
     return {};
 }
 
 Optional<CSS::AlignContent> StyleProperties::align_content() const
 {
-    auto value = property(CSS::PropertyID::AlignContent);
-    return keyword_to_align_content(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::AlignContent);
+    return keyword_to_align_content(value.to_keyword());
 }
 
 Optional<CSS::AlignItems> StyleProperties::align_items() const
 {
-    auto value = property(CSS::PropertyID::AlignItems);
-    return keyword_to_align_items(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::AlignItems);
+    return keyword_to_align_items(value.to_keyword());
 }
 
 Optional<CSS::AlignSelf> StyleProperties::align_self() const
 {
-    auto value = property(CSS::PropertyID::AlignSelf);
-    return keyword_to_align_self(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::AlignSelf);
+    return keyword_to_align_self(value.to_keyword());
 }
 
 Optional<CSS::Appearance> StyleProperties::appearance() const
 {
-    auto value = property(CSS::PropertyID::Appearance);
-    auto appearance = keyword_to_appearance(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::Appearance);
+    auto appearance = keyword_to_appearance(value.to_keyword());
     if (appearance.has_value()) {
         switch (*appearance) {
         // Note: All these compatibility values can be treated as 'auto'
@@ -667,24 +668,24 @@ Optional<CSS::Appearance> StyleProperties::appearance() const
 
 CSS::Filter StyleProperties::backdrop_filter() const
 {
-    auto value = property(CSS::PropertyID::BackdropFilter);
-    if (value->is_filter_value_list())
-        return Filter(value->as_filter_value_list());
+    auto const& value = property(CSS::PropertyID::BackdropFilter);
+    if (value.is_filter_value_list())
+        return Filter(value.as_filter_value_list());
     return Filter::make_none();
 }
 
 CSS::Filter StyleProperties::filter() const
 {
-    auto value = property(CSS::PropertyID::Filter);
-    if (value->is_filter_value_list())
-        return Filter(value->as_filter_value_list());
+    auto const& value = property(CSS::PropertyID::Filter);
+    if (value.is_filter_value_list())
+        return Filter(value.as_filter_value_list());
     return Filter::make_none();
 }
 
 Optional<CSS::Positioning> StyleProperties::position() const
 {
-    auto value = property(CSS::PropertyID::Position);
-    return keyword_to_positioning(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::Position);
+    return keyword_to_positioning(value.to_keyword());
 }
 
 bool StyleProperties::operator==(StyleProperties const& other) const
@@ -715,39 +716,39 @@ bool StyleProperties::operator==(StyleProperties const& other) const
 
 Optional<CSS::TextAnchor> StyleProperties::text_anchor() const
 {
-    auto value = property(CSS::PropertyID::TextAnchor);
-    return keyword_to_text_anchor(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::TextAnchor);
+    return keyword_to_text_anchor(value.to_keyword());
 }
 
 Optional<CSS::TextAlign> StyleProperties::text_align() const
 {
-    auto value = property(CSS::PropertyID::TextAlign);
-    return keyword_to_text_align(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::TextAlign);
+    return keyword_to_text_align(value.to_keyword());
 }
 
 Optional<CSS::TextJustify> StyleProperties::text_justify() const
 {
-    auto value = property(CSS::PropertyID::TextJustify);
-    return keyword_to_text_justify(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::TextJustify);
+    return keyword_to_text_justify(value.to_keyword());
 }
 
 Optional<CSS::TextOverflow> StyleProperties::text_overflow() const
 {
-    auto value = property(CSS::PropertyID::TextOverflow);
-    return keyword_to_text_overflow(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::TextOverflow);
+    return keyword_to_text_overflow(value.to_keyword());
 }
 
 Optional<CSS::PointerEvents> StyleProperties::pointer_events() const
 {
-    auto value = property(CSS::PropertyID::PointerEvents);
-    return keyword_to_pointer_events(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::PointerEvents);
+    return keyword_to_pointer_events(value.to_keyword());
 }
 
 Variant<LengthOrCalculated, NumberOrCalculated> StyleProperties::tab_size() const
 {
-    auto value = property(CSS::PropertyID::TabSize);
-    if (value->is_math()) {
-        auto const& math_value = value->as_math();
+    auto const& value = property(CSS::PropertyID::TabSize);
+    if (value.is_math()) {
+        auto const& math_value = value.as_math();
         if (math_value.resolves_to_length()) {
             return LengthOrCalculated { math_value };
         }
@@ -756,89 +757,89 @@ Variant<LengthOrCalculated, NumberOrCalculated> StyleProperties::tab_size() cons
         }
     }
 
-    if (value->is_length())
-        return LengthOrCalculated { value->as_length().length() };
+    if (value.is_length())
+        return LengthOrCalculated { value.as_length().length() };
 
-    return NumberOrCalculated { value->as_number().number() };
+    return NumberOrCalculated { value.as_number().number() };
 }
 
 Optional<CSS::WordBreak> StyleProperties::word_break() const
 {
-    auto value = property(CSS::PropertyID::WordBreak);
-    return keyword_to_word_break(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::WordBreak);
+    return keyword_to_word_break(value.to_keyword());
 }
 
 Optional<CSS::LengthOrCalculated> StyleProperties::word_spacing() const
 {
-    auto value = property(CSS::PropertyID::WordSpacing);
-    if (value->is_math()) {
-        auto& math_value = value->as_math();
+    auto const& value = property(CSS::PropertyID::WordSpacing);
+    if (value.is_math()) {
+        auto& math_value = value.as_math();
         if (math_value.resolves_to_length()) {
             return LengthOrCalculated { math_value };
         }
     }
 
-    if (value->is_length())
-        return LengthOrCalculated { value->as_length().length() };
+    if (value.is_length())
+        return LengthOrCalculated { value.as_length().length() };
 
     return {};
 }
 
 Optional<CSS::WhiteSpace> StyleProperties::white_space() const
 {
-    auto value = property(CSS::PropertyID::WhiteSpace);
-    return keyword_to_white_space(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::WhiteSpace);
+    return keyword_to_white_space(value.to_keyword());
 }
 
 Optional<LengthOrCalculated> StyleProperties::letter_spacing() const
 {
-    auto value = property(CSS::PropertyID::LetterSpacing);
-    if (value->is_math()) {
-        auto const& math_value = value->as_math();
+    auto const& value = property(CSS::PropertyID::LetterSpacing);
+    if (value.is_math()) {
+        auto const& math_value = value.as_math();
         if (math_value.resolves_to_length()) {
             return LengthOrCalculated { math_value };
         }
     }
 
-    if (value->is_length())
-        return LengthOrCalculated { value->as_length().length() };
+    if (value.is_length())
+        return LengthOrCalculated { value.as_length().length() };
 
     return {};
 }
 
 Optional<CSS::LineStyle> StyleProperties::line_style(CSS::PropertyID property_id) const
 {
-    auto value = property(property_id);
-    return keyword_to_line_style(value->to_keyword());
+    auto const& value = property(property_id);
+    return keyword_to_line_style(value.to_keyword());
 }
 
 Optional<CSS::OutlineStyle> StyleProperties::outline_style() const
 {
-    auto value = property(CSS::PropertyID::OutlineStyle);
-    return keyword_to_outline_style(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::OutlineStyle);
+    return keyword_to_outline_style(value.to_keyword());
 }
 
 Optional<CSS::Float> StyleProperties::float_() const
 {
-    auto value = property(CSS::PropertyID::Float);
-    return keyword_to_float(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::Float);
+    return keyword_to_float(value.to_keyword());
 }
 
 Optional<CSS::Clear> StyleProperties::clear() const
 {
-    auto value = property(CSS::PropertyID::Clear);
-    return keyword_to_clear(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::Clear);
+    return keyword_to_clear(value.to_keyword());
 }
 
 Optional<CSS::ColumnSpan> StyleProperties::column_span() const
 {
-    auto value = property(CSS::PropertyID::ColumnSpan);
-    return keyword_to_column_span(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::ColumnSpan);
+    return keyword_to_column_span(value.to_keyword());
 }
 
 StyleProperties::ContentDataAndQuoteNestingLevel StyleProperties::content(DOM::Element& element, u32 initial_quote_nesting_level) const
 {
-    auto value = property(CSS::PropertyID::Content);
+    auto const& value = property(CSS::PropertyID::Content);
     auto quotes_data = quotes();
 
     auto quote_nesting_level = initial_quote_nesting_level;
@@ -861,8 +862,8 @@ StyleProperties::ContentDataAndQuoteNestingLevel StyleProperties::content(DOM::E
         VERIFY_NOT_REACHED();
     };
 
-    if (value->is_content()) {
-        auto& content_style_value = value->as_content();
+    if (value.is_content()) {
+        auto& content_style_value = value.as_content();
 
         CSS::ContentData content_data;
 
@@ -926,7 +927,7 @@ StyleProperties::ContentDataAndQuoteNestingLevel StyleProperties::content(DOM::E
         return { content_data, quote_nesting_level };
     }
 
-    switch (value->to_keyword()) {
+    switch (value.to_keyword()) {
     case Keyword::None:
         return { { ContentData::Type::None }, quote_nesting_level };
     case Keyword::Normal:
@@ -940,75 +941,75 @@ StyleProperties::ContentDataAndQuoteNestingLevel StyleProperties::content(DOM::E
 
 Optional<CSS::ContentVisibility> StyleProperties::content_visibility() const
 {
-    auto value = property(CSS::PropertyID::ContentVisibility);
-    return keyword_to_content_visibility(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::ContentVisibility);
+    return keyword_to_content_visibility(value.to_keyword());
 }
 
 Optional<CSS::Cursor> StyleProperties::cursor() const
 {
-    auto value = property(CSS::PropertyID::Cursor);
-    return keyword_to_cursor(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::Cursor);
+    return keyword_to_cursor(value.to_keyword());
 }
 
 Optional<CSS::Visibility> StyleProperties::visibility() const
 {
-    auto value = property(CSS::PropertyID::Visibility);
-    if (!value->is_keyword())
+    auto const& value = property(CSS::PropertyID::Visibility);
+    if (!value.is_keyword())
         return {};
-    return keyword_to_visibility(value->to_keyword());
+    return keyword_to_visibility(value.to_keyword());
 }
 
 Display StyleProperties::display() const
 {
-    auto value = property(PropertyID::Display);
-    if (value->is_display()) {
-        return value->as_display().display();
+    auto const& value = property(PropertyID::Display);
+    if (value.is_display()) {
+        return value.as_display().display();
     }
     return Display::from_short(Display::Short::Inline);
 }
 
 Vector<CSS::TextDecorationLine> StyleProperties::text_decoration_line() const
 {
-    auto value = property(CSS::PropertyID::TextDecorationLine);
+    auto const& value = property(CSS::PropertyID::TextDecorationLine);
 
-    if (value->is_value_list()) {
+    if (value.is_value_list()) {
         Vector<CSS::TextDecorationLine> lines;
-        auto& values = value->as_value_list().values();
+        auto& values = value.as_value_list().values();
         for (auto const& item : values) {
             lines.append(keyword_to_text_decoration_line(item->to_keyword()).value());
         }
         return lines;
     }
 
-    if (value->is_keyword() && value->to_keyword() == Keyword::None)
+    if (value.is_keyword() && value.to_keyword() == Keyword::None)
         return {};
 
-    dbgln(""FIXME: Unsupported value for text-decoration-line: {}"", value->to_string());
+    dbgln(""FIXME: Unsupported value for text-decoration-line: {}"", value.to_string());
     return {};
 }
 
 Optional<CSS::TextDecorationStyle> StyleProperties::text_decoration_style() const
 {
-    auto value = property(CSS::PropertyID::TextDecorationStyle);
-    return keyword_to_text_decoration_style(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::TextDecorationStyle);
+    return keyword_to_text_decoration_style(value.to_keyword());
 }
 
 Optional<CSS::TextTransform> StyleProperties::text_transform() const
 {
-    auto value = property(CSS::PropertyID::TextTransform);
-    return keyword_to_text_transform(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::TextTransform);
+    return keyword_to_text_transform(value.to_keyword());
 }
 
 Optional<CSS::ListStyleType> StyleProperties::list_style_type() const
 {
-    auto value = property(CSS::PropertyID::ListStyleType);
-    return keyword_to_list_style_type(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::ListStyleType);
+    return keyword_to_list_style_type(value.to_keyword());
 }
 
 Optional<CSS::ListStylePosition> StyleProperties::list_style_position() const
 {
-    auto value = property(CSS::PropertyID::ListStylePosition);
-    return keyword_to_list_style_position(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::ListStylePosition);
+    return keyword_to_list_style_position(value.to_keyword());
 }
 
 Optional<CSS::Overflow> StyleProperties::overflow_x() const
@@ -1023,13 +1024,13 @@ Optional<CSS::Overflow> StyleProperties::overflow_y() const
 
 Optional<CSS::Overflow> StyleProperties::overflow(CSS::PropertyID property_id) const
 {
-    auto value = property(property_id);
-    return keyword_to_overflow(value->to_keyword());
+    auto const& value = property(property_id);
+    return keyword_to_overflow(value.to_keyword());
 }
 
 Vector<ShadowData> StyleProperties::shadow(PropertyID property_id, Layout::Node const& layout_node) const
 {
-    auto value = property(property_id);
+    auto const& value = property(property_id);
 
     auto resolve_to_length = [&layout_node](NonnullRefPtr<CSSStyleValue const> const& value) -> Optional<Length> {
         if (value->is_length())
@@ -1062,8 +1063,8 @@ Vector<ShadowData> StyleProperties::shadow(PropertyID property_id, Layout::Node
         };
     };
 
-    if (value->is_value_list()) {
-        auto const& value_list = value->as_value_list();
+    if (value.is_value_list()) {
+        auto const& value_list = value.as_value_list();
 
         Vector<ShadowData> shadow_data;
         shadow_data.ensure_capacity(value_list.size());
@@ -1077,8 +1078,8 @@ Vector<ShadowData> StyleProperties::shadow(PropertyID property_id, Layout::Node
         return shadow_data;
     }
 
-    if (value->is_shadow()) {
-        auto maybe_shadow_data = make_shadow_data(value->as_shadow());
+    if (value.is_shadow()) {
+        auto maybe_shadow_data = make_shadow_data(value.as_shadow());
         if (!maybe_shadow_data.has_value())
             return {};
         return { maybe_shadow_data.release_value() };
@@ -1099,52 +1100,52 @@ Vector<ShadowData> StyleProperties::text_shadow(Layout::Node const& layout_node)
 
 Optional<CSS::BoxSizing> StyleProperties::box_sizing() const
 {
-    auto value = property(CSS::PropertyID::BoxSizing);
-    return keyword_to_box_sizing(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::BoxSizing);
+    return keyword_to_box_sizing(value.to_keyword());
 }
 
 Variant<CSS::VerticalAlign, CSS::LengthPercentage> StyleProperties::vertical_align() const
 {
-    auto value = property(CSS::PropertyID::VerticalAlign);
+    auto const& value = property(CSS::PropertyID::VerticalAlign);
 
-    if (value->is_keyword())
-        return keyword_to_vertical_align(value->to_keyword()).release_value();
+    if (value.is_keyword())
+        return keyword_to_vertical_align(value.to_keyword()).release_value();
 
-    if (value->is_length())
-        return CSS::LengthPercentage(value->as_length().length());
+    if (value.is_length())
+        return CSS::LengthPercentage(value.as_length().length());
 
-    if (value->is_percentage())
-        return CSS::LengthPercentage(value->as_percentage().percentage());
+    if (value.is_percentage())
+        return CSS::LengthPercentage(value.as_percentage().percentage());
 
-    if (value->is_math())
-        return LengthPercentage { const_cast<CSSMathValue&>(value->as_math()) };
+    if (value.is_math())
+        return LengthPercentage { const_cast<CSSMathValue&>(value.as_math()) };
 
     VERIFY_NOT_REACHED();
 }
 
 Optional<CSS::FontVariant> StyleProperties::font_variant() const
 {
-    auto value = property(CSS::PropertyID::FontVariant);
-    return keyword_to_font_variant(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::FontVariant);
+    return keyword_to_font_variant(value.to_keyword());
 }
 
 Optional<FlyString> StyleProperties::font_language_override() const
 {
-    auto value = property(CSS::PropertyID::FontLanguageOverride);
-    if (value->is_string())
-        return value->as_string().string_value();
+    auto const& value = property(CSS::PropertyID::FontLanguageOverride);
+    if (value.is_string())
+        return value.as_string().string_value();
     return {};
 }
 
 Optional<HashMap<FlyString, IntegerOrCalculated>> StyleProperties::font_feature_settings() const
 {
-    auto value = property(PropertyID::FontFeatureSettings);
+    auto const& value = property(PropertyID::FontFeatureSettings);
 
-    if (value->is_keyword())
+    if (value.is_keyword())
         return {}; // normal
 
-    if (value->is_value_list()) {
-        auto const& feature_tags = value->as_value_list().values();
+    if (value.is_value_list()) {
+        auto const& feature_tags = value.as_value_list().values();
         HashMap<FlyString, IntegerOrCalculated> result;
         result.ensure_capacity(feature_tags.size());
         for (auto const& tag_value : feature_tags) {
@@ -1165,13 +1166,13 @@ Optional<HashMap<FlyString, IntegerOrCalculated>> StyleProperties::font_feature_
 
 Optional<HashMap<FlyString, NumberOrCalculated>> StyleProperties::font_variation_settings() const
 {
-    auto value = property(CSS::PropertyID::FontVariationSettings);
+    auto const& value = property(CSS::PropertyID::FontVariationSettings);
 
-    if (value->is_keyword())
+    if (value.is_keyword())
         return {}; // normal
 
-    if (value->is_value_list()) {
-        auto const& axis_tags = value->as_value_list().values();
+    if (value.is_value_list()) {
+        auto const& axis_tags = value.as_value_list().values();
         HashMap<FlyString, NumberOrCalculated> result;
         result.ensure_capacity(axis_tags.size());
         for (auto const& tag_value : axis_tags) {
@@ -1192,83 +1193,83 @@ Optional<HashMap<FlyString, NumberOrCalculated>> StyleProperties::font_variation
 
 CSS::GridTrackSizeList StyleProperties::grid_auto_columns() const
 {
-    auto value = property(CSS::PropertyID::GridAutoColumns);
-    return value->as_grid_track_size_list().grid_track_size_list();
+    auto const& value = property(CSS::PropertyID::GridAutoColumns);
+    return value.as_grid_track_size_list().grid_track_size_list();
 }
 
 CSS::GridTrackSizeList StyleProperties::grid_auto_rows() const
 {
-    auto value = property(CSS::PropertyID::GridAutoRows);
-    return value->as_grid_track_size_list().grid_track_size_list();
+    auto const& value = property(CSS::PropertyID::GridAutoRows);
+    return value.as_grid_track_size_list().grid_track_size_list();
 }
 
 CSS::GridTrackSizeList StyleProperties::grid_template_columns() const
 {
-    auto value = property(CSS::PropertyID::GridTemplateColumns);
-    return value->as_grid_track_size_list().grid_track_size_list();
+    auto const& value = property(CSS::PropertyID::GridTemplateColumns);
+    return value.as_grid_track_size_list().grid_track_size_list();
 }
 
 CSS::GridTrackSizeList StyleProperties::grid_template_rows() const
 {
-    auto value = property(CSS::PropertyID::GridTemplateRows);
-    return value->as_grid_track_size_list().grid_track_size_list();
+    auto const& value = property(CSS::PropertyID::GridTemplateRows);
+    return value.as_grid_track_size_list().grid_track_size_list();
 }
 
 CSS::GridAutoFlow StyleProperties::grid_auto_flow() const
 {
-    auto value = property(CSS::PropertyID::GridAutoFlow);
-    if (!value->is_grid_auto_flow())
+    auto const& value = property(CSS::PropertyID::GridAutoFlow);
+    if (!value.is_grid_auto_flow())
         return CSS::GridAutoFlow {};
-    auto& grid_auto_flow_value = value->as_grid_auto_flow();
+    auto& grid_auto_flow_value = value.as_grid_auto_flow();
     return CSS::GridAutoFlow { .row = grid_auto_flow_value.is_row(), .dense = grid_auto_flow_value.is_dense() };
 }
 
 CSS::GridTrackPlacement StyleProperties::grid_column_end() const
 {
-    auto value = property(CSS::PropertyID::GridColumnEnd);
-    return value->as_grid_track_placement().grid_track_placement();
+    auto const& value = property(CSS::PropertyID::GridColumnEnd);
+    return value.as_grid_track_placement().grid_track_placement();
 }
 
 CSS::GridTrackPlacement StyleProperties::grid_column_start() const
 {
-    auto value = property(CSS::PropertyID::GridColumnStart);
-    return value->as_grid_track_placement().grid_track_placement();
+    auto const& value = property(CSS::PropertyID::GridColumnStart);
+    return value.as_grid_track_placement().grid_track_placement();
 }
 
 CSS::GridTrackPlacement StyleProperties::grid_row_end() const
 {
-    auto value = property(CSS::PropertyID::GridRowEnd);
-    return value->as_grid_track_placement().grid_track_placement();
+    auto const& value = property(CSS::PropertyID::GridRowEnd);
+    return value.as_grid_track_placement().grid_track_placement();
 }
 
 CSS::GridTrackPlacement StyleProperties::grid_row_start() const
 {
-    auto value = property(CSS::PropertyID::GridRowStart);
-    return value->as_grid_track_placement().grid_track_placement();
+    auto const& value = property(CSS::PropertyID::GridRowStart);
+    return value.as_grid_track_placement().grid_track_placement();
 }
 
 Optional<CSS::BorderCollapse> StyleProperties::border_collapse() const
 {
-    auto value = property(CSS::PropertyID::BorderCollapse);
-    return keyword_to_border_collapse(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::BorderCollapse);
+    return keyword_to_border_collapse(value.to_keyword());
 }
 
 Vector<Vector<String>> StyleProperties::grid_template_areas() const
 {
-    auto value = property(CSS::PropertyID::GridTemplateAreas);
-    return value->as_grid_template_area().grid_template_area();
+    auto const& value = property(CSS::PropertyID::GridTemplateAreas);
+    return value.as_grid_template_area().grid_template_area();
 }
 
 Optional<CSS::ObjectFit> StyleProperties::object_fit() const
 {
-    auto value = property(CSS::PropertyID::ObjectFit);
-    return keyword_to_object_fit(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::ObjectFit);
+    return keyword_to_object_fit(value.to_keyword());
 }
 
 CSS::ObjectPosition StyleProperties::object_position() const
 {
-    auto value = property(CSS::PropertyID::ObjectPosition);
-    auto const& position = value->as_position();
+    auto const& value = property(CSS::PropertyID::ObjectPosition);
+    auto const& position = value.as_position();
     CSS::ObjectPosition object_position;
     auto const& edge_x = position.edge_x();
     auto const& edge_y = position.edge_y();
@@ -1287,40 +1288,40 @@ CSS::ObjectPosition StyleProperties::object_position() const
 
 Optional<CSS::TableLayout> StyleProperties::table_layout() const
 {
-    auto value = property(CSS::PropertyID::TableLayout);
-    return keyword_to_table_layout(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::TableLayout);
+    return keyword_to_table_layout(value.to_keyword());
 }
 
 Optional<CSS::Direction> StyleProperties::direction() const
 {
-    auto value = property(CSS::PropertyID::Direction);
-    return keyword_to_direction(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::Direction);
+    return keyword_to_direction(value.to_keyword());
 }
 
 Optional<CSS::UnicodeBidi> StyleProperties::unicode_bidi() const
 {
-    auto value = property(CSS::PropertyID::UnicodeBidi);
-    return keyword_to_unicode_bidi(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::UnicodeBidi);
+    return keyword_to_unicode_bidi(value.to_keyword());
 }
 
 Optional<CSS::WritingMode> StyleProperties::writing_mode() const
 {
-    auto value = property(CSS::PropertyID::WritingMode);
-    return keyword_to_writing_mode(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::WritingMode);
+    return keyword_to_writing_mode(value.to_keyword());
 }
 
 Optional<CSS::MaskType> StyleProperties::mask_type() const
 {
-    auto value = property(CSS::PropertyID::MaskType);
-    return keyword_to_mask_type(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::MaskType);
+    return keyword_to_mask_type(value.to_keyword());
 }
 
 Color StyleProperties::stop_color() const
 {
-    auto value = property(CSS::PropertyID::StopColor);
+    NonnullRawPtr<CSSStyleValue const> value = property(CSS::PropertyID::StopColor);
     if (value->is_keyword()) {
         // Workaround lack of layout node to resolve current color.
-        auto& keyword = value->as_keyword();
+        auto const& keyword = value->as_keyword();
         if (keyword.keyword() == CSS::Keyword::Currentcolor)
             value = property(CSS::PropertyID::Color);
     }
@@ -1341,9 +1342,9 @@ void StyleProperties::set_math_depth(int math_depth)
 
 QuotesData StyleProperties::quotes() const
 {
-    auto value = property(CSS::PropertyID::Quotes);
-    if (value->is_keyword()) {
-        switch (value->to_keyword()) {
+    auto const& value = property(CSS::PropertyID::Quotes);
+    if (value.is_keyword()) {
+        switch (value.to_keyword()) {
         case Keyword::Auto:
             return QuotesData { .type = QuotesData::Type::Auto };
         case Keyword::None:
@@ -1352,8 +1353,8 @@ QuotesData StyleProperties::quotes() const
             break;
         }
     }
-    if (value->is_value_list()) {
-        auto& value_list = value->as_value_list();
+    if (value.is_value_list()) {
+        auto& value_list = value.as_value_list();
         QuotesData quotes_data { .type = QuotesData::Type::Specified };
         VERIFY(value_list.size() % 2 == 0);
         for (auto i = 0u; i < value_list.size(); i += 2) {
@@ -1369,10 +1370,10 @@ QuotesData StyleProperties::quotes() const
 
 Vector<CounterData> StyleProperties::counter_data(PropertyID property_id) const
 {
-    auto value = property(property_id);
+    auto const& value = property(property_id);
 
-    if (value->is_counter_definitions()) {
-        auto& counter_definitions = value->as_counter_definitions().counter_definitions();
+    if (value.is_counter_definitions()) {
+        auto& counter_definitions = value.as_counter_definitions().counter_definitions();
         Vector<CounterData> result;
         for (auto& counter : counter_definitions) {
             CounterData data {
@@ -1396,17 +1397,17 @@ Vector<CounterData> StyleProperties::counter_data(PropertyID property_id) const
         return result;
     }
 
-    if (value->to_keyword() == Keyword::None)
+    if (value.to_keyword() == Keyword::None)
         return {};
 
-    dbgln(""Unhandled type for {} value: '{}'"", string_from_property_id(property_id), value->to_string());
+    dbgln(""Unhandled type for {} value: '{}'"", string_from_property_id(property_id), value.to_string());
     return {};
 }
 
 Optional<CSS::ScrollbarWidth> StyleProperties::scrollbar_width() const
 {
-    auto value = property(CSS::PropertyID::ScrollbarWidth);
-    return keyword_to_scrollbar_width(value->to_keyword());
+    auto const& value = property(CSS::PropertyID::ScrollbarWidth);
+    return keyword_to_scrollbar_width(value.to_keyword());
 }
 
 }
diff --git a/Userland/Libraries/LibWeb/CSS/StyleProperties.h b/Userland/Libraries/LibWeb/CSS/StyleProperties.h
index 377637db026c..328b4440f076 100644
--- a/Userland/Libraries/LibWeb/CSS/StyleProperties.h
+++ b/Userland/Libraries/LibWeb/CSS/StyleProperties.h
@@ -76,8 +76,8 @@ class StyleProperties {
         No,
         Yes,
     };
-    NonnullRefPtr<CSSStyleValue const> property(CSS::PropertyID, WithAnimationsApplied = WithAnimationsApplied::Yes) const;
-    RefPtr<CSSStyleValue const> maybe_null_property(CSS::PropertyID) const;
+    CSSStyleValue const& property(CSS::PropertyID, WithAnimationsApplied = WithAnimationsApplied::Yes) const;
+    CSSStyleValue const* maybe_null_property(CSS::PropertyID) const;
     void revert_property(CSS::PropertyID, StyleProperties const& style_for_revert);
 
     JS::GCPtr<CSS::CSSStyleDeclaration const> animation_name_source() const { return m_data->m_animation_name_source; }
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
index 99098196d90c..d2a1ba4b6875 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLInputElement.cpp
@@ -140,7 +140,7 @@ void HTMLInputElement::adjust_computed_style(CSS::StyleProperties& style)
         style.set_property(CSS::PropertyID::Display, CSS::DisplayStyleValue::create(CSS::Display::from_short(CSS::Display::Short::InlineBlock)));
 
     if (type_state() != TypeAttributeState::FileUpload) {
-        if (style.property(CSS::PropertyID::Width)->has_auto())
+        if (style.property(CSS::PropertyID::Width).has_auto())
             style.set_property(CSS::PropertyID::Width, CSS::LengthStyleValue::create(CSS::Length(size(), CSS::Length::Type::Ch)));
     }
 
@@ -1131,9 +1131,9 @@ void HTMLInputElement::computed_css_values_changed()
     auto palette = document().page().palette();
     auto accent_color = palette.color(ColorRole::Accent).to_string();
 
-    auto accent_color_property = computed_css_values()->property(CSS::PropertyID::AccentColor);
-    if (accent_color_property->has_color())
-        accent_color = accent_color_property->to_string();
+    auto const& accent_color_property = computed_css_values()->property(CSS::PropertyID::AccentColor);
+    if (accent_color_property.has_color())
+        accent_color = accent_color_property.to_string();
 
     if (m_slider_progress_element)
         MUST(m_slider_progress_element->style_for_bindings()->set_property(CSS::PropertyID::BackgroundColor, accent_color));
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLProgressElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLProgressElement.cpp
index 30ce11c780bc..025884af501c 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLProgressElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLProgressElement.cpp
@@ -127,9 +127,9 @@ void HTMLProgressElement::computed_css_values_changed()
     auto palette = document().page().palette();
     auto accent_color = palette.color(ColorRole::Accent).to_string();
 
-    auto accent_color_property = computed_css_values()->property(CSS::PropertyID::AccentColor);
-    if (accent_color_property->has_color())
-        accent_color = accent_color_property->to_string();
+    auto const& accent_color_property = computed_css_values()->property(CSS::PropertyID::AccentColor);
+    if (accent_color_property.has_color())
+        accent_color = accent_color_property.to_string();
 
     if (m_progress_value_element)
         MUST(m_progress_value_element->style_for_bindings()->set_property(CSS::PropertyID::BackgroundColor, accent_color));
diff --git a/Userland/Libraries/LibWeb/HTML/HTMLTextAreaElement.cpp b/Userland/Libraries/LibWeb/HTML/HTMLTextAreaElement.cpp
index 6bbde14305b2..e0cef60d56f6 100644
--- a/Userland/Libraries/LibWeb/HTML/HTMLTextAreaElement.cpp
+++ b/Userland/Libraries/LibWeb/HTML/HTMLTextAreaElement.cpp
@@ -48,9 +48,9 @@ void HTMLTextAreaElement::adjust_computed_style(CSS::StyleProperties& style)
     if (style.display().is_inline_outside() && style.display().is_flow_inside())
         style.set_property(CSS::PropertyID::Display, CSS::DisplayStyleValue::create(CSS::Display::from_short(CSS::Display::Short::InlineBlock)));
 
-    if (style.property(CSS::PropertyID::Width)->has_auto())
+    if (style.property(CSS::PropertyID::Width).has_auto())
         style.set_property(CSS::PropertyID::Width, CSS::LengthStyleValue::create(CSS::Length(cols(), CSS::Length::Type::Ch)));
-    if (style.property(CSS::PropertyID::Height)->has_auto())
+    if (style.property(CSS::PropertyID::Height).has_auto())
         style.set_property(CSS::PropertyID::Height, CSS::LengthStyleValue::create(CSS::Length(rows(), CSS::Length::Type::Lh)));
 }
 
diff --git a/Userland/Libraries/LibWeb/Layout/Node.cpp b/Userland/Libraries/LibWeb/Layout/Node.cpp
index 97fdff363ba7..eac095d5021c 100644
--- a/Userland/Libraries/LibWeb/Layout/Node.cpp
+++ b/Userland/Libraries/LibWeb/Layout/Node.cpp
@@ -320,32 +320,32 @@ void NodeWithStyle::apply_style(const CSS::StyleProperties& computed_style)
     //       m_font is used by Length::to_px() when resolving sizes against this layout node.
     //       That's why it has to be set before everything else.
     computed_values.set_font_list(computed_style.computed_font_list());
-    computed_values.set_font_size(computed_style.property(CSS::PropertyID::FontSize)->as_length().length().to_px(*this));
-    computed_values.set_font_weight(round_to<int>(computed_style.property(CSS::PropertyID::FontWeight)->as_number().number()));
+    computed_values.set_font_size(computed_style.property(CSS::PropertyID::FontSize).as_length().length().to_px(*this));
+    computed_values.set_font_weight(round_to<int>(computed_style.property(CSS::PropertyID::FontWeight).as_number().number()));
     computed_values.set_line_height(computed_style.line_height());
 
     computed_values.set_vertical_align(computed_style.vertical_align());
 
     {
-        auto attachments = computed_style.property(CSS::PropertyID::BackgroundAttachment);
-        auto clips = computed_style.property(CSS::PropertyID::BackgroundClip);
-        auto images = computed_style.property(CSS::PropertyID::BackgroundImage);
-        auto origins = computed_style.property(CSS::PropertyID::BackgroundOrigin);
-        auto x_positions = computed_style.property(CSS::PropertyID::BackgroundPositionX);
-        auto y_positions = computed_style.property(CSS::PropertyID::BackgroundPositionY);
-        auto repeats = computed_style.property(CSS::PropertyID::BackgroundRepeat);
-        auto sizes = computed_style.property(CSS::PropertyID::BackgroundSize);
-
-        auto count_layers = [](auto maybe_style_value) -> size_t {
-            if (maybe_style_value->is_value_list())
-                return maybe_style_value->as_value_list().size();
+        auto const& attachments = computed_style.property(CSS::PropertyID::BackgroundAttachment);
+        auto const& clips = computed_style.property(CSS::PropertyID::BackgroundClip);
+        auto const& images = computed_style.property(CSS::PropertyID::BackgroundImage);
+        auto const& origins = computed_style.property(CSS::PropertyID::BackgroundOrigin);
+        auto const& x_positions = computed_style.property(CSS::PropertyID::BackgroundPositionX);
+        auto const& y_positions = computed_style.property(CSS::PropertyID::BackgroundPositionY);
+        auto const& repeats = computed_style.property(CSS::PropertyID::BackgroundRepeat);
+        auto const& sizes = computed_style.property(CSS::PropertyID::BackgroundSize);
+
+        auto count_layers = [](auto const& maybe_style_value) -> size_t {
+            if (maybe_style_value.is_value_list())
+                return maybe_style_value.as_value_list().size();
             else
                 return 1;
         };
 
-        auto value_for_layer = [](auto& style_value, size_t layer_index) -> RefPtr<CSS::CSSStyleValue const> {
-            if (style_value->is_value_list())
-                return style_value->as_value_list().value_at(layer_index, true);
+        auto value_for_layer = [](auto const& style_value, size_t layer_index) -> RefPtr<CSS::CSSStyleValue const> {
+            if (style_value.is_value_list())
+                return style_value.as_value_list().value_at(layer_index, true);
             return style_value;
         };
 
@@ -467,33 +467,33 @@ void NodeWithStyle::apply_style(const CSS::StyleProperties& computed_style)
     if (auto maybe_font_variation_settings = computed_style.font_variation_settings(); maybe_font_variation_settings.has_value())
         computed_values.set_font_variation_settings(maybe_font_variation_settings.release_value());
 
-    auto border_bottom_left_radius = computed_style.property(CSS::PropertyID::BorderBottomLeftRadius);
-    if (border_bottom_left_radius->is_border_radius()) {
+    auto const& border_bottom_left_radius = computed_style.property(CSS::PropertyID::BorderBottomLeftRadius);
+    if (border_bottom_left_radius.is_border_radius()) {
         computed_values.set_border_bottom_left_radius(
             CSS::BorderRadiusData {
-                border_bottom_left_radius->as_border_radius().horizontal_radius(),
-                border_bottom_left_radius->as_border_radius().vertical_radius() });
+                border_bottom_left_radius.as_border_radius().horizontal_radius(),
+                border_bottom_left_radius.as_border_radius().vertical_radius() });
     }
-    auto border_bottom_right_radius = computed_style.property(CSS::PropertyID::BorderBottomRightRadius);
-    if (border_bottom_right_radius->is_border_radius()) {
+    auto const& border_bottom_right_radius = computed_style.property(CSS::PropertyID::BorderBottomRightRadius);
+    if (border_bottom_right_radius.is_border_radius()) {
         computed_values.set_border_bottom_right_radius(
             CSS::BorderRadiusData {
-                border_bottom_right_radius->as_border_radius().horizontal_radius(),
-                border_bottom_right_radius->as_border_radius().vertical_radius() });
+                border_bottom_right_radius.as_border_radius().horizontal_radius(),
+                border_bottom_right_radius.as_border_radius().vertical_radius() });
     }
-    auto border_top_left_radius = computed_style.property(CSS::PropertyID::BorderTopLeftRadius);
-    if (border_top_left_radius->is_border_radius()) {
+    auto const& border_top_left_radius = computed_style.property(CSS::PropertyID::BorderTopLeftRadius);
+    if (border_top_left_radius.is_border_radius()) {
         computed_values.set_border_top_left_radius(
             CSS::BorderRadiusData {
-                border_top_left_radius->as_border_radius().horizontal_radius(),
-                border_top_left_radius->as_border_radius().vertical_radius() });
+                border_top_left_radius.as_border_radius().horizontal_radius(),
+                border_top_left_radius.as_border_radius().vertical_radius() });
     }
-    auto border_top_right_radius = computed_style.property(CSS::PropertyID::BorderTopRightRadius);
-    if (border_top_right_radius->is_border_radius()) {
+    auto const& border_top_right_radius = computed_style.property(CSS::PropertyID::BorderTopRightRadius);
+    if (border_top_right_radius.is_border_radius()) {
         computed_values.set_border_top_right_radius(
             CSS::BorderRadiusData {
-                border_top_right_radius->as_border_radius().horizontal_radius(),
-                border_top_right_radius->as_border_radius().vertical_radius() });
+                border_top_right_radius.as_border_radius().horizontal_radius(),
+                border_top_right_radius.as_border_radius().vertical_radius() });
     }
     computed_values.set_display(computed_style.display());
 
@@ -669,9 +669,9 @@ void NodeWithStyle::apply_style(const CSS::StyleProperties& computed_style)
     if (auto list_style_type = computed_style.list_style_type(); list_style_type.has_value())
         computed_values.set_list_style_type(list_style_type.value());
 
-    auto list_style_image = computed_style.property(CSS::PropertyID::ListStyleImage);
-    if (list_style_image->is_abstract_image()) {
-        m_list_style_image = list_style_image->as_abstract_image();
+    auto const& list_style_image = computed_style.property(CSS::PropertyID::ListStyleImage);
+    if (list_style_image.is_abstract_image()) {
+        m_list_style_image = list_style_image.as_abstract_image();
         const_cast<CSS::AbstractImageStyleValue&>(*m_list_style_image).load_any_resources(document());
     }
 
@@ -717,12 +717,12 @@ void NodeWithStyle::apply_style(const CSS::StyleProperties& computed_style)
         computed_values.set_transform_box(transform_box.value());
     computed_values.set_transform_origin(computed_style.transform_origin());
 
-    auto transition_delay_property = computed_style.property(CSS::PropertyID::TransitionDelay);
-    if (transition_delay_property->is_time()) {
-        auto& transition_delay = transition_delay_property->as_time();
+    auto const& transition_delay_property = computed_style.property(CSS::PropertyID::TransitionDelay);
+    if (transition_delay_property.is_time()) {
+        auto const& transition_delay = transition_delay_property.as_time();
         computed_values.set_transition_delay(transition_delay.time());
-    } else if (transition_delay_property->is_math()) {
-        auto& transition_delay = transition_delay_property->as_math();
+    } else if (transition_delay_property.is_math()) {
+        auto const& transition_delay = transition_delay_property.as_math();
         computed_values.set_transition_delay(transition_delay.resolve_time().value());
     }
 
@@ -742,14 +742,14 @@ void NodeWithStyle::apply_style(const CSS::StyleProperties& computed_style)
             border.width = 0;
         } else {
             auto resolve_border_width = [&]() -> CSSPixels {
-                auto value = computed_style.property(width_property);
-                if (value->is_math())
-                    return max(CSSPixels { 0 }, value->as_math().resolve_length(*this)->to_px(*this));
-                if (value->is_length())
-                    return value->as_length().length().to_px(*this);
-                if (value->is_keyword()) {
+                auto const& value = computed_style.property(width_property);
+                if (value.is_math())
+                    return max(CSSPixels { 0 }, value.as_math().resolve_length(*this)->to_px(*this));
+                if (value.is_length())
+                    return value.as_length().length().to_px(*this);
+                if (value.is_keyword()) {
                     // https://www.w3.org/TR/css-backgrounds-3/#valdef-line-width-thin
-                    switch (value->to_keyword()) {
+                    switch (value.to_keyword()) {
                     case CSS::Keyword::Thin:
                         return 1;
                     case CSS::Keyword::Medium:
@@ -772,14 +772,14 @@ void NodeWithStyle::apply_style(const CSS::StyleProperties& computed_style)
     do_border_style(computed_values.border_right(), CSS::PropertyID::BorderRightWidth, CSS::PropertyID::BorderRightColor, CSS::PropertyID::BorderRightStyle);
     do_border_style(computed_values.border_bottom(), CSS::PropertyID::BorderBottomWidth, CSS::PropertyID::BorderBottomColor, CSS::PropertyID::BorderBottomStyle);
 
-    if (auto outline_color = computed_style.property(CSS::PropertyID::OutlineColor); outline_color->has_color())
-        computed_values.set_outline_color(outline_color->to_color(*this));
-    if (auto outline_offset = computed_style.property(CSS::PropertyID::OutlineOffset); outline_offset->is_length())
-        computed_values.set_outline_offset(outline_offset->as_length().length());
-    if (auto outline_style = computed_style.outline_style(); outline_style.has_value())
+    if (auto const& outline_color = computed_style.property(CSS::PropertyID::OutlineColor); outline_color.has_color())
+        computed_values.set_outline_color(outline_color.to_color(*this));
+    if (auto const& outline_offset = computed_style.property(CSS::PropertyID::OutlineOffset); outline_offset.is_length())
+        computed_values.set_outline_offset(outline_offset.as_length().length());
+    if (auto const& outline_style = computed_style.outline_style(); outline_style.has_value())
         computed_values.set_outline_style(outline_style.value());
-    if (auto outline_width = computed_style.property(CSS::PropertyID::OutlineWidth); outline_width->is_length())
-        computed_values.set_outline_width(outline_width->as_length().length());
+    if (auto const& outline_width = computed_style.property(CSS::PropertyID::OutlineWidth); outline_width.is_length())
+        computed_values.set_outline_width(outline_width.as_length().length());
 
     computed_values.set_grid_auto_columns(computed_style.grid_auto_columns());
     computed_values.set_grid_auto_rows(computed_style.grid_auto_rows());
@@ -807,39 +807,39 @@ void NodeWithStyle::apply_style(const CSS::StyleProperties& computed_style)
     if (auto y_value = computed_style.length_percentage(CSS::PropertyID::Y); y_value.has_value())
         computed_values.set_y(*y_value);
 
-    auto fill = computed_style.property(CSS::PropertyID::Fill);
-    if (fill->has_color())
-        computed_values.set_fill(fill->to_color(*this));
-    else if (fill->is_url())
-        computed_values.set_fill(fill->as_url().url());
-    auto stroke = computed_style.property(CSS::PropertyID::Stroke);
-    if (stroke->has_color())
-        computed_values.set_stroke(stroke->to_color(*this));
-    else if (stroke->is_url())
-        computed_values.set_stroke(stroke->as_url().url());
-    if (auto stop_color = computed_style.property(CSS::PropertyID::StopColor); stop_color->has_color())
-        computed_values.set_stop_color(stop_color->to_color(*this));
-    auto stroke_width = computed_style.property(CSS::PropertyID::StrokeWidth);
+    auto const& fill = computed_style.property(CSS::PropertyID::Fill);
+    if (fill.has_color())
+        computed_values.set_fill(fill.to_color(*this));
+    else if (fill.is_url())
+        computed_values.set_fill(fill.as_url().url());
+    auto const& stroke = computed_style.property(CSS::PropertyID::Stroke);
+    if (stroke.has_color())
+        computed_values.set_stroke(stroke.to_color(*this));
+    else if (stroke.is_url())
+        computed_values.set_stroke(stroke.as_url().url());
+    if (auto const& stop_color = computed_style.property(CSS::PropertyID::StopColor); stop_color.has_color())
+        computed_values.set_stop_color(stop_color.to_color(*this));
+    auto const& stroke_width = computed_style.property(CSS::PropertyID::StrokeWidth);
     // FIXME: Converting to pixels isn't really correct - values should be in ""user units""
     //        https://svgwg.org/svg2-draft/coords.html#TermUserUnits
-    if (stroke_width->is_number())
-        computed_values.set_stroke_width(CSS::Length::make_px(CSSPixels::nearest_value_for(stroke_width->as_number().number())));
-    else if (stroke_width->is_length())
-        computed_values.set_stroke_width(stroke_width->as_length().length());
-    else if (stroke_width->is_percentage())
-        computed_values.set_stroke_width(CSS::LengthPercentage { stroke_width->as_percentage().percentage() });
+    if (stroke_width.is_number())
+        computed_values.set_stroke_width(CSS::Length::make_px(CSSPixels::nearest_value_for(stroke_width.as_number().number())));
+    else if (stroke_width.is_length())
+        computed_values.set_stroke_width(stroke_width.as_length().length());
+    else if (stroke_width.is_percentage())
+        computed_values.set_stroke_width(CSS::LengthPercentage { stroke_width.as_percentage().percentage() });
 
     if (auto mask_type = computed_style.mask_type(); mask_type.has_value())
         computed_values.set_mask_type(*mask_type);
 
-    if (auto mask = computed_style.property(CSS::PropertyID::Mask); mask->is_url())
-        computed_values.set_mask(mask->as_url().url());
+    if (auto const& mask = computed_style.property(CSS::PropertyID::Mask); mask.is_url())
+        computed_values.set_mask(mask.as_url().url());
 
-    auto clip_path = computed_style.property(CSS::PropertyID::ClipPath);
-    if (clip_path->is_url())
-        computed_values.set_clip_path(clip_path->as_url().url());
-    else if (clip_path->is_basic_shape())
-        computed_values.set_clip_path(clip_path->as_basic_shape());
+    auto const& clip_path = computed_style.property(CSS::PropertyID::ClipPath);
+    if (clip_path.is_url())
+        computed_values.set_clip_path(clip_path.as_url().url());
+    else if (clip_path.is_basic_shape())
+        computed_values.set_clip_path(clip_path.as_basic_shape());
 
     if (auto clip_rule = computed_style.clip_rule(); clip_rule.has_value())
         computed_values.set_clip_rule(*clip_rule);
@@ -861,8 +861,8 @@ void NodeWithStyle::apply_style(const CSS::StyleProperties& computed_style)
     if (auto text_anchor = computed_style.text_anchor(); text_anchor.has_value())
         computed_values.set_text_anchor(*text_anchor);
 
-    if (auto column_count = computed_style.property(CSS::PropertyID::ColumnCount); column_count->is_integer())
-        computed_values.set_column_count(CSS::ColumnCount::make_integer(column_count->as_integer().integer()));
+    if (auto const& column_count = computed_style.property(CSS::PropertyID::ColumnCount); column_count.is_integer())
+        computed_values.set_column_count(CSS::ColumnCount::make_integer(column_count.as_integer().integer()));
 
     if (auto column_span = computed_style.column_span(); column_span.has_value())
         computed_values.set_column_span(column_span.value());
@@ -878,31 +878,31 @@ void NodeWithStyle::apply_style(const CSS::StyleProperties& computed_style)
     if (auto table_layout = computed_style.table_layout(); table_layout.has_value())
         computed_values.set_table_layout(table_layout.value());
 
-    auto aspect_ratio = computed_style.property(CSS::PropertyID::AspectRatio);
-    if (aspect_ratio->is_value_list()) {
-        auto& values_list = aspect_ratio->as_value_list().values();
+    auto const& aspect_ratio = computed_style.property(CSS::PropertyID::AspectRatio);
+    if (aspect_ratio.is_value_list()) {
+        auto const& values_list = aspect_ratio.as_value_list().values();
         if (values_list.size() == 2
             && values_list[0]->is_keyword() && values_list[0]->as_keyword().keyword() == CSS::Keyword::Auto
             && values_list[1]->is_ratio()) {
             computed_values.set_aspect_ratio({ true, values_list[1]->as_ratio().ratio() });
         }
-    } else if (aspect_ratio->is_keyword() && aspect_ratio->as_keyword().keyword() == CSS::Keyword::Auto) {
+    } else if (aspect_ratio.is_keyword() && aspect_ratio.as_keyword().keyword() == CSS::Keyword::Auto) {
         computed_values.set_aspect_ratio({ true, {} });
-    } else if (aspect_ratio->is_ratio()) {
+    } else if (aspect_ratio.is_ratio()) {
         // https://drafts.csswg.org/css-sizing-4/#aspect-ratio
         // If the <ratio> is degenerate, the property instead behaves as auto.
-        if (aspect_ratio->as_ratio().ratio().is_degenerate())
+        if (aspect_ratio.as_ratio().ratio().is_degenerate())
             computed_values.set_aspect_ratio({ true, {} });
         else
-            computed_values.set_aspect_ratio({ false, aspect_ratio->as_ratio().ratio() });
+            computed_values.set_aspect_ratio({ false, aspect_ratio.as_ratio().ratio() });
     }
 
-    auto math_shift_value = computed_style.property(CSS::PropertyID::MathShift);
-    if (auto math_shift = keyword_to_math_shift(math_shift_value->to_keyword()); math_shift.has_value())
+    auto const& math_shift_value = computed_style.property(CSS::PropertyID::MathShift);
+    if (auto math_shift = keyword_to_math_shift(math_shift_value.to_keyword()); math_shift.has_value())
         computed_values.set_math_shift(math_shift.value());
 
-    auto math_style_value = computed_style.property(CSS::PropertyID::MathStyle);
-    if (auto math_style = keyword_to_math_style(math_style_value->to_keyword()); math_style.has_value())
+    auto const& math_style_value = computed_style.property(CSS::PropertyID::MathStyle);
+    if (auto math_style = keyword_to_math_style(math_style_value.to_keyword()); math_style.has_value())
         computed_values.set_math_style(math_style.value());
 
     computed_values.set_math_depth(computed_style.math_depth());
diff --git a/Userland/Services/WebContent/WebDriverConnection.cpp b/Userland/Services/WebContent/WebDriverConnection.cpp
index 9094f153b18c..44e61f4e4c3c 100644
--- a/Userland/Services/WebContent/WebDriverConnection.cpp
+++ b/Userland/Services/WebContent/WebDriverConnection.cpp
@@ -1387,7 +1387,7 @@ Messages::WebDriverClient::GetElementCssValueResponse WebDriverConnection::get_e
             // computed value of parameter URL variables[""property name""] from element's style declarations.
             if (auto property = Web::CSS::property_id_from_string(name); property.has_value()) {
                 if (auto computed_values = element->computed_css_values(); computed_values.has_value())
-                    computed_value = computed_values->property(property.value())->to_string();
+                    computed_value = computed_values->property(property.value()).to_string();
             }
         }
         // -> Otherwise"
a4a238ddc87d3e1a5e776a1d4b98891ee5871aee,2021-01-02 16:07:01,AnotherTest,"libgui: Add an optional ""automatic"" autocomplete feature to TextEditor",False,"Add an optional ""automatic"" autocomplete feature to TextEditor",libgui,"diff --git a/Libraries/LibGUI/AutocompleteProvider.cpp b/Libraries/LibGUI/AutocompleteProvider.cpp
index 9ca6b143727d..b2d6266ff2ab 100644
--- a/Libraries/LibGUI/AutocompleteProvider.cpp
+++ b/Libraries/LibGUI/AutocompleteProvider.cpp
@@ -92,6 +92,8 @@ class AutocompleteSuggestionModel final : public GUI::Model {
     }
     virtual void update() override {};
 
+    void set_suggestions(Vector<AutocompleteProvider::Entry>&& suggestions) { m_suggestions = move(suggestions); }
+
 private:
     Vector<AutocompleteProvider::Entry> m_suggestions;
 };
@@ -111,16 +113,21 @@ AutocompleteBox::AutocompleteBox(TextEditor& editor)
 
 void AutocompleteBox::update_suggestions(Vector<AutocompleteProvider::Entry>&& suggestions)
 {
-    if (suggestions.is_empty())
-        return;
-
     bool has_suggestions = !suggestions.is_empty();
-    m_suggestion_view->set_model(adopt(*new AutocompleteSuggestionModel(move(suggestions))));
+    if (m_suggestion_view->model()) {
+        auto& model = *static_cast<AutocompleteSuggestionModel*>(m_suggestion_view->model());
+        model.set_suggestions(move(suggestions));
+    } else {
+        m_suggestion_view->set_model(adopt(*new AutocompleteSuggestionModel(move(suggestions))));
+        m_suggestion_view->update();
+        if (has_suggestions)
+            m_suggestion_view->set_cursor(m_suggestion_view->model()->index(0), GUI::AbstractView::SelectionUpdate::Set);
+    }
 
+    m_suggestion_view->model()->update();
+    m_suggestion_view->update();
     if (!has_suggestions)
-        m_suggestion_view->selection().clear();
-    else
-        m_suggestion_view->selection().set(m_suggestion_view->model()->index(0));
+        close();
 }
 
 bool AutocompleteBox::is_visible() const
@@ -130,7 +137,12 @@ bool AutocompleteBox::is_visible() const
 
 void AutocompleteBox::show(Gfx::IntPoint suggstion_box_location)
 {
+    if (!m_suggestion_view->model() || m_suggestion_view->model()->row_count() == 0)
+        return;
+
     m_popup_window->move_to(suggstion_box_location);
+    if (!is_visible())
+        m_suggestion_view->move_cursor(GUI::AbstractView::CursorMovement::Home, GUI::AbstractTableView::SelectionUpdate::Set);
     m_popup_window->show();
 }
 
diff --git a/Libraries/LibGUI/TextEditor.cpp b/Libraries/LibGUI/TextEditor.cpp
index 1a5feede4dac..114800f800f3 100644
--- a/Libraries/LibGUI/TextEditor.cpp
+++ b/Libraries/LibGUI/TextEditor.cpp
@@ -713,6 +713,7 @@ void TextEditor::sort_selected_lines()
 
 void TextEditor::keydown_event(KeyEvent& event)
 {
+    TemporaryChange change { m_should_keep_autocomplete_box, true };
     if (m_autocomplete_box && m_autocomplete_box->is_visible() && (event.key() == KeyCode::Key_Return || event.key() == KeyCode::Key_Tab)) {
         m_autocomplete_box->apply_suggestion();
         m_autocomplete_box->close();
@@ -979,6 +980,8 @@ void TextEditor::keydown_event(KeyEvent& event)
     if (event.key() == KeyCode::Key_Backspace) {
         if (!is_editable())
             return;
+        if (m_autocomplete_box)
+            m_autocomplete_box->close();
         if (has_selection()) {
             delete_selection();
             did_update_selection();
@@ -1017,6 +1020,8 @@ void TextEditor::keydown_event(KeyEvent& event)
     if (event.modifiers() == Mod_Shift && event.key() == KeyCode::Key_Delete) {
         if (!is_editable())
             return;
+        if (m_autocomplete_box)
+            m_autocomplete_box->close();
         delete_current_line();
         return;
     }
@@ -1024,17 +1029,15 @@ void TextEditor::keydown_event(KeyEvent& event)
     if (event.key() == KeyCode::Key_Delete) {
         if (!is_editable())
             return;
+        if (m_autocomplete_box)
+            m_autocomplete_box->close();
         do_delete();
         return;
     }
 
     if (!event.shift() && !event.alt() && event.ctrl() && event.key() == KeyCode::Key_Space) {
         if (m_autocomplete_provider) {
-            m_autocomplete_provider->provide_completions([&](auto completions) {
-                m_autocomplete_box->update_suggestions(move(completions));
-                auto position = content_rect_for_position(cursor()).bottom_right().translated(screen_relative_rect().top_left().translated(ruler_width(), 0).translated(10, 5));
-                m_autocomplete_box->show(position);
-            });
+            try_show_autocomplete();
             update_autocomplete.disarm();
             return;
         }
@@ -1044,6 +1047,8 @@ void TextEditor::keydown_event(KeyEvent& event)
         StringBuilder sb;
         sb.append_code_point(event.code_point());
 
+        if (should_autocomplete_automatically())
+            m_autocomplete_timer->start();
         insert_at_cursor_or_replace_selection(sb.to_string());
         return;
     }
@@ -1428,6 +1433,19 @@ void TextEditor::undefer_reflow()
     }
 }
 
+void TextEditor::try_show_autocomplete()
+{
+    if (m_autocomplete_provider) {
+        m_autocomplete_provider->provide_completions([&](auto completions) {
+            auto has_completions = !completions.is_empty();
+            m_autocomplete_box->update_suggestions(move(completions));
+            auto position = content_rect_for_position(cursor()).bottom_right().translated(screen_relative_rect().top_left().translated(ruler_width(), 0).translated(10, 5));
+            if (has_completions)
+                m_autocomplete_box->show(position);
+        });
+    }
+}
+
 void TextEditor::enter_event(Core::Event&)
 {
     m_automatic_selection_scroll_timer->stop();
@@ -1437,6 +1455,10 @@ void TextEditor::leave_event(Core::Event&)
 {
     if (m_in_drag_select)
         m_automatic_selection_scroll_timer->start();
+    if (m_autocomplete_timer)
+        m_autocomplete_timer->stop();
+    if (m_autocomplete_box)
+        m_autocomplete_box->close();
 }
 
 void TextEditor::did_change()
@@ -1445,6 +1467,10 @@ void TextEditor::did_change()
     recompute_all_visual_lines();
     m_undo_action->set_enabled(can_undo());
     m_redo_action->set_enabled(can_redo());
+    if (m_autocomplete_box && !m_should_keep_autocomplete_box) {
+        m_autocomplete_timer->stop();
+        m_autocomplete_box->close();
+    }
     if (!m_has_pending_change_notification) {
         m_has_pending_change_notification = true;
         deferred_invoke([this](auto&) {
@@ -1848,4 +1874,19 @@ void TextEditor::set_visualize_trailing_whitespace(bool enabled)
     update();
 }
 
+void TextEditor::set_should_autocomplete_automatically(bool value)
+{
+    if (value == should_autocomplete_automatically())
+        return;
+
+    if (value) {
+        ASSERT(m_autocomplete_provider);
+        m_autocomplete_timer = Core::Timer::create_single_shot(m_automatic_autocomplete_delay_ms, [this] { try_show_autocomplete(); });
+        return;
+    }
+
+    remove_child(*m_autocomplete_timer);
+    m_autocomplete_timer = nullptr;
+}
+
 }
diff --git a/Libraries/LibGUI/TextEditor.h b/Libraries/LibGUI/TextEditor.h
index f5b8b2284ccb..7a0dcb045652 100644
--- a/Libraries/LibGUI/TextEditor.h
+++ b/Libraries/LibGUI/TextEditor.h
@@ -30,6 +30,7 @@
 #include <AK/NonnullOwnPtrVector.h>
 #include <AK/NonnullRefPtrVector.h>
 #include <LibCore/ElapsedTimer.h>
+#include <LibCore/Timer.h>
 #include <LibGUI/Forward.h>
 #include <LibGUI/ScrollableWidget.h>
 #include <LibGUI/TextDocument.h>
@@ -163,6 +164,9 @@ class TextEditor
     const AutocompleteProvider* autocomplete_provider() const;
     void set_autocomplete_provider(OwnPtr<AutocompleteProvider>&&);
 
+    bool should_autocomplete_automatically() const { return m_autocomplete_timer; }
+    void set_should_autocomplete_automatically(bool);
+
     bool is_in_drag_select() const { return m_in_drag_select; }
 
 protected:
@@ -212,6 +216,8 @@ class TextEditor
     void defer_reflow();
     void undefer_reflow();
 
+    void try_show_autocomplete();
+
     int icon_size() const { return 16; }
     int icon_padding() const { return 2; }
 
@@ -323,8 +329,12 @@ class TextEditor
     OwnPtr<SyntaxHighlighter> m_highlighter;
     OwnPtr<AutocompleteProvider> m_autocomplete_provider;
     OwnPtr<AutocompleteBox> m_autocomplete_box;
+    bool m_should_keep_autocomplete_box { false };
+    size_t m_automatic_autocomplete_delay_ms { 800 };
 
     RefPtr<Core::Timer> m_automatic_selection_scroll_timer;
+    RefPtr<Core::Timer> m_autocomplete_timer;
+
     Gfx::IntPoint m_last_mousemove_position;
 
     RefPtr<Gfx::Bitmap> m_icon;"
9743849ddb0df68edb1e8fbd21aa013d43668128,2022-09-18 16:23:06,Andreas Kling,libweb: Allow passing null to a nullable IDL union type,False,Allow passing null to a nullable IDL union type,libweb,"diff --git a/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp
index e009eb0f7f4c..5f1d32e6e2c6 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibWeb/WrapperGenerator/IDLGenerators.cpp
@@ -1334,7 +1334,7 @@ static void generate_to_cpp(SourceGenerator& generator, ParameterType& parameter
                 if (!optional_default_value.has_value() || optional_default_value == ""null""sv) {
                     union_generator.append(R""~~~(
     Optional<@union_type@> @cpp_name@;
-    if (!@js_name@@js_suffix@.is_undefined())
+    if (!@js_name@@js_suffix@.is_nullish())
         @cpp_name@ = TRY(@js_name@@js_suffix@_to_variant(@js_name@@js_suffix@));
 )~~~"");
                 } else {"
49727ffee424d8c0038ce18b91b0bf0ff33b1a4d,2020-05-14 18:14:27,Pierre,paintbrush: Added 'Move active layer up/down' to the Menu,False,Added 'Move active layer up/down' to the Menu,paintbrush,"diff --git a/Applications/PaintBrush/Image.cpp b/Applications/PaintBrush/Image.cpp
index 6cb92d039eb3..2236b383588a 100644
--- a/Applications/PaintBrush/Image.cpp
+++ b/Applications/PaintBrush/Image.cpp
@@ -104,6 +104,26 @@ void Image::move_layer_to_front(Layer& layer)
     m_layers.append(layer);
 }
 
+void Image::move_layer_down(Layer& layer)
+{
+    NonnullRefPtr<Layer> protector(layer);
+    auto index = index_of(layer);
+    if (!index)
+        return;
+    m_layers.remove(index);
+    m_layers.insert(index - 1, layer);
+}
+
+void Image::move_layer_up(Layer& layer)
+{
+    NonnullRefPtr<Layer> protector(layer);
+    auto index = index_of(layer);
+    if (index == m_layers.size() - 1)
+        return;
+    m_layers.remove(index);
+    m_layers.insert(index + 1, layer);
+}
+
 void Image::remove_layer(Layer& layer)
 {
     NonnullRefPtr<Layer> protector(layer);
diff --git a/Applications/PaintBrush/Image.h b/Applications/PaintBrush/Image.h
index 9526f0efe46d..96e87e73ff7a 100644
--- a/Applications/PaintBrush/Image.h
+++ b/Applications/PaintBrush/Image.h
@@ -57,6 +57,8 @@ class Image : public RefCounted<Image> {
 
     void move_layer_to_front(Layer&);
     void move_layer_to_back(Layer&);
+    void move_layer_up(Layer&);
+    void move_layer_down(Layer&);
     void remove_layer(Layer&);
 
 private:
diff --git a/Applications/PaintBrush/main.cpp b/Applications/PaintBrush/main.cpp
index 3c57fbbf8bd8..749a3cdcf2b9 100644
--- a/Applications/PaintBrush/main.cpp
+++ b/Applications/PaintBrush/main.cpp
@@ -151,6 +151,23 @@ int main(int argc, char** argv)
         layer_table_view.selection().set(layer_table_view.model()->index(0));
     }, window));
     layer_menu.add_separator();
+    layer_menu.add_action(GUI::Action::create(""Move active layer up"", { Mod_Ctrl, Key_PageUp }, [&](auto&) {
+        auto active_layer = image_editor.active_layer();
+        if(!active_layer)
+            return;
+        image_editor.image()->move_layer_up(*active_layer);
+        layer_table_view.move_selection(1);
+        image_editor.layers_did_change();
+    }, window));
+    layer_menu.add_action(GUI::Action::create(""Move active layer down"", { Mod_Ctrl, Key_PageDown }, [&](auto&) {
+        auto active_layer = image_editor.active_layer();
+        if(!active_layer)
+            return;
+        image_editor.image()->move_layer_down(*active_layer);
+        layer_table_view.move_selection(-1);
+        image_editor.layers_did_change();
+    }, window));
+    layer_menu.add_separator();
     layer_menu.add_action(GUI::Action::create(""Remove active layer"", { Mod_Ctrl , Key_D }, [&](auto&) {
         auto active_layer = image_editor.active_layer();
         if(!active_layer)"
2c9d94c6b97abddf15ca65ad302e8bb16b248121,2020-02-12 00:13:40,Andreas Kling,webserver: Use Core::DateTime for logging timestamps,False,Use Core::DateTime for logging timestamps,webserver,"diff --git a/Servers/WebServer/Client.cpp b/Servers/WebServer/Client.cpp
index 58c694585b71..0114d195598c 100644
--- a/Servers/WebServer/Client.cpp
+++ b/Servers/WebServer/Client.cpp
@@ -27,6 +27,7 @@
 #include ""Client.h""
 #include <AK/FileSystemPath.h>
 #include <AK/StringBuilder.h>
+#include <LibCore/DateTime.h>
 #include <LibCore/File.h>
 #include <LibCore/HttpRequest.h>
 #include <stdio.h>
@@ -123,7 +124,11 @@ void Client::send_error_response(unsigned code, const StringView& message, const
 
 void Client::log_response(unsigned code, const Core::HttpRequest& request)
 {
-    printf(""%lld :: %03u :: %s %s\n"", time(nullptr), code, request.method_name().characters(), request.resource().characters());
+    printf(""%s :: %03u :: %s %s\n"",
+        Core::DateTime::now().to_string().characters(),
+        code,
+        request.method_name().characters(),
+        request.resource().characters());
 }
 
 }"
7cabe6433eba86b50d7fbee89d59b2ab6bae7b50,2019-07-28 21:57:32,Andreas Kling,audioserver: Add a buffer queue so we can buffer some sound.,False,Add a buffer queue so we can buffer some sound.,audioserver,"diff --git a/Libraries/LibAudio/AClientConnection.cpp b/Libraries/LibAudio/AClientConnection.cpp
index 0cb64578b294..abe9a307c408 100644
--- a/Libraries/LibAudio/AClientConnection.cpp
+++ b/Libraries/LibAudio/AClientConnection.cpp
@@ -25,3 +25,18 @@ void AClientConnection::play(const ABuffer& buffer, bool block)
     request.play_buffer.buffer_id = buffer.shared_buffer_id();
     sync_request(request, block ? ASAPI_ServerMessage::Type::FinishedPlayingBuffer : ASAPI_ServerMessage::Type::PlayingBuffer);
 }
+
+void AClientConnection::enqueue(const ABuffer& buffer)
+{
+    for (;;) {
+        const_cast<ABuffer&>(buffer).shared_buffer().share_with(server_pid());
+        ASAPI_ClientMessage request;
+        request.type = ASAPI_ClientMessage::Type::EnqueueBuffer;
+        request.play_buffer.buffer_id = buffer.shared_buffer_id();
+        auto response = sync_request(request, ASAPI_ServerMessage::Type::EnqueueBufferResponse);
+        if (response.success)
+            break;
+        dbg() << ""EnqueueBuffer failed, retrying..."";
+        sleep(1);
+    }
+}
diff --git a/Libraries/LibAudio/AClientConnection.h b/Libraries/LibAudio/AClientConnection.h
index 214af48bc04b..2cc224353de1 100644
--- a/Libraries/LibAudio/AClientConnection.h
+++ b/Libraries/LibAudio/AClientConnection.h
@@ -12,4 +12,5 @@ class AClientConnection : public IPC::Client::Connection<ASAPI_ServerMessage, AS
 
     virtual void handshake() override;
     void play(const ABuffer&, bool block);
+    void enqueue(const ABuffer&);
 };
diff --git a/Libraries/LibAudio/ASAPI.h b/Libraries/LibAudio/ASAPI.h
index 227aee102746..0dabd28c8656 100644
--- a/Libraries/LibAudio/ASAPI.h
+++ b/Libraries/LibAudio/ASAPI.h
@@ -6,10 +6,12 @@ struct ASAPI_ServerMessage {
         Greeting,
         PlayingBuffer,
         FinishedPlayingBuffer,
+        EnqueueBufferResponse,
     };
 
     Type type { Type::Invalid };
     unsigned extra_size { 0 };
+    bool success { true };
 
     union {
         struct {
@@ -27,6 +29,7 @@ struct ASAPI_ClientMessage {
         Invalid,
         Greeting,
         PlayBuffer,
+        EnqueueBuffer,
     };
 
     Type type { Type::Invalid };
diff --git a/Servers/AudioServer/ASClientConnection.cpp b/Servers/AudioServer/ASClientConnection.cpp
index 96cf328fcc23..2e22dab00831 100644
--- a/Servers/AudioServer/ASClientConnection.cpp
+++ b/Servers/AudioServer/ASClientConnection.cpp
@@ -54,6 +54,30 @@ bool ASClientConnection::handle_message(const ASAPI_ClientMessage& message, cons
         m_mixer.queue(*this, ABuffer::create_with_shared_buffer(*shared_buffer));
         break;
     }
+    case ASAPI_ClientMessage::Type::EnqueueBuffer: {
+        auto shared_buffer = SharedBuffer::create_from_shared_buffer_id(message.play_buffer.buffer_id);
+        if (!shared_buffer) {
+            did_misbehave();
+            return false;
+        }
+
+        static const int max_in_queue = 2;
+
+        ASAPI_ServerMessage reply;
+        reply.type = ASAPI_ServerMessage::Type::EnqueueBufferResponse;
+        reply.playing_buffer.buffer_id = message.play_buffer.buffer_id;
+        if (m_buffer_queue.size() >= max_in_queue) {
+            reply.success = false;
+        } else {
+            m_buffer_queue.enqueue(ABuffer::create_with_shared_buffer(*shared_buffer));
+        }
+        post_message(reply);
+
+        if (m_playing_queued_buffer_id == -1)
+            play_next_in_queue();
+
+        break;
+    }
     case ASAPI_ClientMessage::Type::Invalid:
     default:
         dbgprintf(""ASClientConnection: Unexpected message ID %d\n"", int(message.type));
@@ -65,8 +89,19 @@ bool ASClientConnection::handle_message(const ASAPI_ClientMessage& message, cons
 
 void ASClientConnection::did_finish_playing_buffer(Badge<ASMixer>, int buffer_id)
 {
+    if (m_playing_queued_buffer_id == buffer_id)
+        play_next_in_queue();
+
     ASAPI_ServerMessage reply;
     reply.type = ASAPI_ServerMessage::Type::FinishedPlayingBuffer;
     reply.playing_buffer.buffer_id = buffer_id;
     post_message(reply);
 }
+
+void ASClientConnection::play_next_in_queue()
+{
+    dbg() << ""Playing next in queue ("" << m_buffer_queue.size() << "" queued)"";
+    auto buffer = m_buffer_queue.dequeue();
+    m_playing_queued_buffer_id = buffer->shared_buffer_id();
+    m_mixer.queue(*this, move(buffer));
+}
diff --git a/Servers/AudioServer/ASClientConnection.h b/Servers/AudioServer/ASClientConnection.h
index 295adfc2219f..ee89c4fab584 100644
--- a/Servers/AudioServer/ASClientConnection.h
+++ b/Servers/AudioServer/ASClientConnection.h
@@ -1,8 +1,10 @@
 #pragma once
 
+#include <AK/Queue.h>
 #include <LibAudio/ASAPI.h>
 #include <LibCore/CoreIPCServer.h>
 
+class ABuffer;
 class ASMixer;
 
 class ASClientConnection final : public IPC::Server::Connection<ASAPI_ServerMessage, ASAPI_ClientMessage> {
@@ -16,5 +18,9 @@ class ASClientConnection final : public IPC::Server::Connection<ASAPI_ServerMess
     void did_finish_playing_buffer(Badge<ASMixer>, int buffer_id);
 
 private:
+    void play_next_in_queue();
+
     ASMixer& m_mixer;
+    Queue<NonnullRefPtr<ABuffer>> m_buffer_queue;
+    int m_playing_queued_buffer_id { -1 };
 };
diff --git a/Userland/aplay.cpp b/Userland/aplay.cpp
index 158121534c8a..9d2fba736bec 100644
--- a/Userland/aplay.cpp
+++ b/Userland/aplay.cpp
@@ -25,7 +25,7 @@ int main(int argc, char **argv)
             break;
         }
         printf(""Playing %d sample(s)\n"", samples->sample_count());
-        a_conn.play(*samples, true);
+        a_conn.enqueue(*samples);
     }
 
     printf(""Exiting! :)\n"");"
9a1b24d5bef6e706cebe7e7ef7ca18007b4860c8,2022-09-29 04:22:51,Timothy Flynn,libtimezone: Use the last DST rule in the TZDB if a match isn't found,False,Use the last DST rule in the TZDB if a match isn't found,libtimezone,"diff --git a/Meta/Lagom/Tools/CodeGenerators/LibTimeZone/GenerateTimeZoneData.cpp b/Meta/Lagom/Tools/CodeGenerators/LibTimeZone/GenerateTimeZoneData.cpp
index 4762c63a05f3..adac6c338763 100644
--- a/Meta/Lagom/Tools/CodeGenerators/LibTimeZone/GenerateTimeZoneData.cpp
+++ b/Meta/Lagom/Tools/CodeGenerators/LibTimeZone/GenerateTimeZoneData.cpp
@@ -641,6 +641,7 @@ static Array<DaylightSavingsOffset const*, 2> find_dst_offsets(TimeZoneOffset co
 
     DaylightSavingsOffset const* standard_offset = nullptr;
     DaylightSavingsOffset const* daylight_offset = nullptr;
+    DaylightSavingsOffset const* last_offset = nullptr;
 
     auto preferred_rule = [&](auto* current_offset, auto& new_offset) {
         if (!current_offset)
@@ -652,6 +653,12 @@ static Array<DaylightSavingsOffset const*, 2> find_dst_offsets(TimeZoneOffset co
 
     for (size_t index = 0; (index < dst_rules.size()) && (!standard_offset || !daylight_offset); ++index) {
         auto const& dst_rule = dst_rules[index];
+
+        if (last_offset == nullptr)
+            last_offset = &dst_rule;
+        else if (dst_rule.time_in_effect(dst_rule.year_to) > last_offset->time_in_effect(last_offset->year_to))
+            last_offset = &dst_rule;
+
         if ((time < dst_rule.year_from) || (time >= dst_rule.year_to))
             continue;
 
@@ -661,11 +668,10 @@ static Array<DaylightSavingsOffset const*, 2> find_dst_offsets(TimeZoneOffset co
             daylight_offset = preferred_rule(daylight_offset, dst_rule);
     }
 
-    // In modern times, there will always be a standard rule in the TZDB, but that isn't true in
-    // all time zones in or before the early 1900s. For example, the ""US"" rules begin in 1918.
+    // If there isn't a standard or daylight rule in effect, fall back to the last rule given in the TZDB.
     if (!standard_offset) {
-        static DaylightSavingsOffset const empty_offset {};
-        return { &empty_offset, &empty_offset };
+        VERIFY(last_offset != nullptr);
+        standard_offset = last_offset;
     }
 
     return { standard_offset, daylight_offset ? daylight_offset : standard_offset };
diff --git a/Tests/LibTimeZone/TestTimeZone.cpp b/Tests/LibTimeZone/TestTimeZone.cpp
index 1e44cffba238..7cf8a6fc2e0d 100644
--- a/Tests/LibTimeZone/TestTimeZone.cpp
+++ b/Tests/LibTimeZone/TestTimeZone.cpp
@@ -177,6 +177,10 @@ TEST_CASE(get_named_time_zone_offsets)
     test_named_offsets(""Europe/Moscow""sv, -1609459200, offset(+1, 2, 31, 19), offset(+1, 3, 31, 19), ""MSK""sv, ""MSD""sv);  // Wednesday, January 1, 1919 12:00:00 AM
     test_named_offsets(""Europe/Moscow""sv, -1596412800, offset(+1, 2, 31, 19), offset(+1, 4, 31, 19), ""MSK""sv, ""MDST""sv); // Sunday, June 1, 1919 12:00:00 AM
     test_named_offsets(""Europe/Moscow""sv, -1589068800, offset(+1, 3, 00, 00), offset(+1, 4, 00, 00), ""MSK""sv, ""MSD""sv);  // Monday, August 25, 1919 12:00:00 AM
+
+    // Shanghai's DST rules end in 1991.
+    test_named_offsets(""Asia/Shanghai""sv, 694223999, offset(+1, 8, 00, 00), offset(+1, 9, 00, 00), ""CST""sv, ""CDT""sv); // Tuesday, December 31, 1991 11:59:59 PM
+    test_named_offsets(""Asia/Shanghai""sv, 694224000, offset(+1, 8, 00, 00), offset(+1, 8, 00, 00), ""CST""sv, ""CST""sv); // Wednesday, January 1, 1992 12:00:00 AM
 }
 
 #else"
c9b86be1ccadef17b103a3ee6ba557dd37b8235f,2019-04-20 22:20:41,Andreas Kling,snake: Add some more fruit types.,False,Add some more fruit types.,snake,"diff --git a/Base/res/icons/snake/cauliflower.png b/Base/res/icons/snake/cauliflower.png
new file mode 100644
index 000000000000..6bcda88e51ff
Binary files /dev/null and b/Base/res/icons/snake/cauliflower.png differ
diff --git a/Base/res/icons/snake/eggplant.png b/Base/res/icons/snake/eggplant.png
new file mode 100644
index 000000000000..e017e2d2a444
Binary files /dev/null and b/Base/res/icons/snake/eggplant.png differ
diff --git a/Base/res/icons/snake/tomato.png b/Base/res/icons/snake/tomato.png
new file mode 100644
index 000000000000..f341ed1cb45e
Binary files /dev/null and b/Base/res/icons/snake/tomato.png differ
diff --git a/Games/Snake/SnakeGame.cpp b/Games/Snake/SnakeGame.cpp
index 0b49fe4d10aa..cfa3511c17de 100644
--- a/Games/Snake/SnakeGame.cpp
+++ b/Games/Snake/SnakeGame.cpp
@@ -8,7 +8,10 @@ SnakeGame::SnakeGame(GWidget* parent)
     : GWidget(parent)
 {
     set_font(Font::default_bold_font());
-    m_fruit_bitmap = GraphicsBitmap::load_from_file(""/res/icons/snake/paprika.png"");
+    m_fruit_bitmaps.append(*GraphicsBitmap::load_from_file(""/res/icons/snake/paprika.png""));
+    m_fruit_bitmaps.append(*GraphicsBitmap::load_from_file(""/res/icons/snake/eggplant.png""));
+    m_fruit_bitmaps.append(*GraphicsBitmap::load_from_file(""/res/icons/snake/cauliflower.png""));
+    m_fruit_bitmaps.append(*GraphicsBitmap::load_from_file(""/res/icons/snake/tomato.png""));
     srand(time(nullptr));
     reset();
 }
@@ -54,6 +57,7 @@ void SnakeGame::spawn_fruit()
             break;
     }
     m_fruit = coord;
+    m_fruit_type = rand() % m_fruit_bitmaps.size();
 }
 
 Rect SnakeGame::score_rect() const
@@ -167,10 +171,22 @@ void SnakeGame::paint_event(GPaintEvent& event)
     painter.fill_rect(event.rect(), Color::Black);
 
     painter.fill_rect(cell_rect(m_head), Color::Yellow);
-    for (auto& coord : m_tail)
-        painter.fill_rect(cell_rect(coord), Color::from_rgb(0xaaaa00));
+    for (auto& part : m_tail) {
+        auto rect = cell_rect(part);
+        painter.fill_rect(rect, Color::from_rgb(0xaaaa00));
+
+        Rect left_side(rect.x(), rect.y(), 2, rect.height());
+        Rect top_side(rect.x(), rect.y(), rect.width(), 2);
+        Rect right_side(rect.right() - 1, rect.y(), 2, rect.height());
+        Rect bottom_side(rect.x(), rect.bottom() - 1, rect.width(), 2);
+        painter.fill_rect(left_side, Color::from_rgb(0xcccc00));
+        painter.fill_rect(right_side, Color::from_rgb(0x888800));
+        painter.fill_rect(top_side, Color::from_rgb(0xcccc00));
+        painter.fill_rect(bottom_side, Color::from_rgb(0x888800));
 
-    painter.draw_scaled_bitmap(cell_rect(m_fruit), *m_fruit_bitmap, m_fruit_bitmap->rect());
+    }
+
+    painter.draw_scaled_bitmap(cell_rect(m_fruit), *m_fruit_bitmaps[m_fruit_type], m_fruit_bitmaps[m_fruit_type]->rect());
 
     painter.draw_text(score_rect(), m_score_text, TextAlignment::TopLeft, Color::White);
 }
diff --git a/Games/Snake/SnakeGame.h b/Games/Snake/SnakeGame.h
index 192b54852181..ec042273358b 100644
--- a/Games/Snake/SnakeGame.h
+++ b/Games/Snake/SnakeGame.h
@@ -50,10 +50,11 @@ class SnakeGame : public GWidget {
     Vector<Coordinate> m_tail;
 
     Coordinate m_fruit;
+    int m_fruit_type { 0 };
 
     int m_length { 0 };
     unsigned m_score { 0 };
     String m_score_text;
 
-    RetainPtr<GraphicsBitmap> m_fruit_bitmap;
+    Vector<Retained<GraphicsBitmap>> m_fruit_bitmaps;
 };
diff --git a/Games/Snake/main.cpp b/Games/Snake/main.cpp
index 7cf72b64ff3c..1ae78b6bfa06 100644
--- a/Games/Snake/main.cpp
+++ b/Games/Snake/main.cpp
@@ -13,7 +13,7 @@ int main(int argc, char** argv)
 
     auto* window = new GWindow;
     window->set_title(""Snake"");
-    window->set_rect(100, 100, 300, 300);
+    window->set_rect(100, 100, 320, 320);
 
     auto* game = new SnakeGame;
     window->set_main_widget(game);"
609a0aa75d94b510e48fe595096e5c0e8c9b3b14,2021-07-02 17:46:56,Spencer Dixon,assistant: Change to home directory when spawning applications,False,Change to home directory when spawning applications,assistant,"diff --git a/Userland/Applications/Assistant/Providers.cpp b/Userland/Applications/Assistant/Providers.cpp
index bb9312f56afd..02d0fabfe4ad 100644
--- a/Userland/Applications/Assistant/Providers.cpp
+++ b/Userland/Applications/Assistant/Providers.cpp
@@ -6,17 +6,24 @@
 
 #include ""Providers.h""
 #include ""FuzzyMatch.h""
+#include <LibCore/StandardPaths.h>
 #include <LibGUI/Clipboard.h>
 #include <LibGUI/FileIconProvider.h>
 #include <LibJS/Interpreter.h>
 #include <LibJS/Lexer.h>
 #include <LibJS/Parser.h>
 #include <LibJS/Runtime/GlobalObject.h>
+#include <unistd.h>
 
 namespace Assistant {
 
 void AppResult::activate() const
 {
+    if (chdir(Core::StandardPaths::home_directory().characters()) < 0) {
+        perror(""chdir"");
+        exit(1);
+    }
+
     m_app_file->spawn();
 }"
6b72fc09247efc24d080fff24bcf70c6539afaed,2023-11-17 22:47:00,sSt3lla,calculator: Convert DeprecatedString to String,False,Convert DeprecatedString to String,calculator,"diff --git a/Userland/Applications/Calculator/CalculatorWidget.cpp b/Userland/Applications/Calculator/CalculatorWidget.cpp
index 385df9bee96b..e10f048ecbef 100644
--- a/Userland/Applications/Calculator/CalculatorWidget.cpp
+++ b/Userland/Applications/Calculator/CalculatorWidget.cpp
@@ -28,7 +28,7 @@ CalculatorWidget::CalculatorWidget()
     m_label->set_frame_style(Gfx::FrameStyle::SunkenContainer);
 
     for (int i = 0; i < 10; i++) {
-        m_digit_button[i] = *find_descendant_of_type_named<GUI::Button>(DeprecatedString::formatted(""{}_button"", i));
+        m_digit_button[i] = *find_descendant_of_type_named<GUI::Button>(String::formatted(""{}_button"", i).release_value_but_fixme_should_propagate_errors());
         add_digit_button(*m_digit_button[i], i);
     }
 
@@ -128,9 +128,9 @@ void CalculatorWidget::add_digit_button(GUI::Button& button, int digit)
     };
 }
 
-DeprecatedString CalculatorWidget::get_entry()
+String CalculatorWidget::get_entry()
 {
-    return m_entry->text();
+    return String::from_deprecated_string(m_entry->text()).release_value_but_fixme_should_propagate_errors();
 }
 
 void CalculatorWidget::set_entry(Crypto::BigFraction value)
@@ -147,7 +147,7 @@ void CalculatorWidget::set_typed_entry(Crypto::BigFraction value)
 
 void CalculatorWidget::update_display()
 {
-    m_entry->set_text(m_keypad.to_deprecated_string());
+    m_entry->set_text(m_keypad.to_string().release_value_but_fixme_should_propagate_errors());
     if (m_calculator.has_error())
         m_label->set_text(""E""_string);
     else
diff --git a/Userland/Applications/Calculator/CalculatorWidget.h b/Userland/Applications/Calculator/CalculatorWidget.h
index 1333a8581da8..603b70d0ded1 100644
--- a/Userland/Applications/Calculator/CalculatorWidget.h
+++ b/Userland/Applications/Calculator/CalculatorWidget.h
@@ -19,7 +19,7 @@ class CalculatorWidget final : public GUI::Widget {
     C_OBJECT(CalculatorWidget)
 public:
     virtual ~CalculatorWidget() override = default;
-    DeprecatedString get_entry();
+    String get_entry();
     void set_entry(Crypto::BigFraction);
     void set_typed_entry(Crypto::BigFraction);
 
diff --git a/Userland/Applications/Calculator/Keypad.cpp b/Userland/Applications/Calculator/Keypad.cpp
index e8e2c04ad2a4..df1c1b17519b 100644
--- a/Userland/Applications/Calculator/Keypad.cpp
+++ b/Userland/Applications/Calculator/Keypad.cpp
@@ -121,10 +121,10 @@ void Keypad::set_to_0()
     m_state = State::External;
 }
 
-DeprecatedString Keypad::to_deprecated_string() const
+ErrorOr<String> Keypad::to_string() const
 {
     if (m_state == State::External || m_state == State::TypedExternal)
-        return m_internal_value.to_deprecated_string(m_displayed_fraction_length);
+        return String::from_deprecated_string(m_internal_value.to_deprecated_string(m_displayed_fraction_length));
 
     StringBuilder builder;
 
@@ -142,7 +142,7 @@ DeprecatedString Keypad::to_deprecated_string() const
             builder.append(frac_value);
     }
 
-    return builder.to_deprecated_string();
+    return builder.to_string();
 }
 
 bool Keypad::in_typing_state() const
diff --git a/Userland/Applications/Calculator/Keypad.h b/Userland/Applications/Calculator/Keypad.h
index 3ef3be3a9de6..a5d860c4b53a 100644
--- a/Userland/Applications/Calculator/Keypad.h
+++ b/Userland/Applications/Calculator/Keypad.h
@@ -7,7 +7,7 @@
 
 #pragma once
 
-#include <AK/DeprecatedString.h>
+#include <AK/String.h>
 #include <LibCrypto/BigFraction/BigFraction.h>
 #include <LibCrypto/BigInt/UnsignedBigInteger.h>
 
@@ -34,7 +34,7 @@ class Keypad final {
     void set_rounding_length(unsigned);
     unsigned rounding_length() const;
 
-    DeprecatedString to_deprecated_string() const;
+    ErrorOr<String> to_string() const;
 
     bool in_typing_state() const;"
49dbc4b5a56ea063d445778c1774a0c8e5cea0ad,2023-11-06 16:05:36,Martin Janiczek,libtest: Bump up MAX_GEN_ATTEMPTS_PER_VALUE to 30,False,Bump up MAX_GEN_ATTEMPTS_PER_VALUE to 30,libtest,"diff --git a/Userland/Libraries/LibTest/TestCase.h b/Userland/Libraries/LibTest/TestCase.h
index 5e2057878b07..066e5e893afe 100644
--- a/Userland/Libraries/LibTest/TestCase.h
+++ b/Userland/Libraries/LibTest/TestCase.h
@@ -46,7 +46,7 @@ class TestCase : public RefCounted<TestCase> {
     {
         using namespace Randomized;
 
-        constexpr u8 MAX_GEN_ATTEMPTS_PER_VALUE = 15;
+        constexpr u8 MAX_GEN_ATTEMPTS_PER_VALUE = 30;
 
         TestFunction test_case_function = [test_function = move(test_function)]() {
             u64 max_randomized_runs = randomized_runs();"
90fc28152bde11fa96a98b9cced21dc2678fd62c,2022-03-27 00:00:12,Simon Danner,chess: On pgn import avoid losing piece promotion info,False,On pgn import avoid losing piece promotion info,chess,"diff --git a/Userland/Libraries/LibChess/Chess.cpp b/Userland/Libraries/LibChess/Chess.cpp
index e50ec108fc12..6d56ecd1f0b5 100644
--- a/Userland/Libraries/LibChess/Chess.cpp
+++ b/Userland/Libraries/LibChess/Chess.cpp
@@ -165,7 +165,7 @@ Move Move::from_algebraic(StringView algebraic, const Color turn, const Board& b
             }
             return IterationDecision::Continue;
         } else {
-            if (board.get_piece(square).type == move.piece.type && board.is_legal(Move(square, move.to), turn)) {
+            if (board.get_piece(square).type == move.piece.type && board.is_legal(Move(square, move.to, move.promote_to), turn)) {
                 move.from = square;
                 return IterationDecision::Break;
             }"
8ec9b26bba2794af4eeabf5e9d21d187b2b0063c,2023-08-12 01:03:48,kleines Filmröllchen,help: Use new GML code generator,False,Use new GML code generator,help,"diff --git a/Userland/Applications/Help/CMakeLists.txt b/Userland/Applications/Help/CMakeLists.txt
index ebc8057cc568..7b958012c4fa 100644
--- a/Userland/Applications/Help/CMakeLists.txt
+++ b/Userland/Applications/Help/CMakeLists.txt
@@ -5,17 +5,14 @@ serenity_component(
     DEPENDS WebContent
 )
 
-stringify_gml(HelpWindow.gml HelpWindowGML.h help_window_gml)
+compile_gml(HelpWindow.gml HelpWindowGML.cpp)
 
 set(SOURCES
     History.cpp
     main.cpp
     MainWidget.cpp
     ManualModel.cpp
-)
-
-set(GENERATED_SOURCES
-    HelpWindowGML.h
+    HelpWindowGML.cpp
 )
 
 serenity_app(Help ICON app-help)
diff --git a/Userland/Applications/Help/HelpWindow.gml b/Userland/Applications/Help/HelpWindow.gml
index 24067b5fdad3..cb1c54a638ab 100644
--- a/Userland/Applications/Help/HelpWindow.gml
+++ b/Userland/Applications/Help/HelpWindow.gml
@@ -1,4 +1,4 @@
-@GUI::Widget {
+@Help::MainWidget {
     fill_with_background_color: true
     layout: @GUI::VerticalBoxLayout {
         spacing: 2
diff --git a/Userland/Applications/Help/MainWidget.cpp b/Userland/Applications/Help/MainWidget.cpp
index 653d20cb18a1..d4a2443314be 100644
--- a/Userland/Applications/Help/MainWidget.cpp
+++ b/Userland/Applications/Help/MainWidget.cpp
@@ -12,7 +12,6 @@
 #include <AK/String.h>
 #include <AK/StringView.h>
 #include <AK/URL.h>
-#include <Applications/Help/HelpWindowGML.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/System.h>
 #include <LibDesktop/Launcher.h>
@@ -41,7 +40,29 @@ namespace Help {
 
 MainWidget::MainWidget()
 {
-    load_from_gml(help_window_gml).release_value_but_fixme_should_propagate_errors();
+}
+
+ErrorOr<void> MainWidget::set_start_page(Vector<StringView, 2> query_parameters)
+{
+    auto result = Manual::Node::try_create_from_query(query_parameters);
+    if (result.is_error()) {
+        // No match, so treat the input as a search query
+        m_tab_widget->set_active_widget(m_search_container);
+        m_search_box->set_focus(true);
+        m_search_box->set_text(query_parameters.first_matching([](auto&) { return true; }).value_or(""""sv));
+        m_search_box->select_all();
+        m_filter_model->set_filter_term(m_search_box->text());
+        m_go_home_action->activate();
+    } else {
+        auto const page = TRY(result.value()->path());
+        m_history.push(page);
+        open_page(page);
+    }
+    return {};
+}
+
+ErrorOr<void> MainWidget::initialize_fallibles(GUI::Window& window)
+{
     m_toolbar = find_descendant_of_type_named<GUI::Toolbar>(""toolbar"");
     m_tab_widget = find_descendant_of_type_named<GUI::TabWidget>(""tab_widget"");
     m_search_container = find_descendant_of_type_named<GUI::Widget>(""search_container"");
@@ -172,29 +193,7 @@ MainWidget::MainWidget()
     GUI::Application::the()->on_action_leave = [this](GUI::Action const&) {
         m_statusbar->set_override_text({});
     };
-}
-
-ErrorOr<void> MainWidget::set_start_page(Vector<StringView, 2> query_parameters)
-{
-    auto result = Manual::Node::try_create_from_query(query_parameters);
-    if (result.is_error()) {
-        // No match, so treat the input as a search query
-        m_tab_widget->set_active_widget(m_search_container);
-        m_search_box->set_focus(true);
-        m_search_box->set_text(query_parameters.first_matching([](auto&) { return true; }).value_or(""""sv));
-        m_search_box->select_all();
-        m_filter_model->set_filter_term(m_search_box->text());
-        m_go_home_action->activate();
-    } else {
-        auto const page = TRY(result.value()->path());
-        m_history.push(page);
-        open_page(page);
-    }
-    return {};
-}
 
-ErrorOr<void> MainWidget::initialize_fallibles(GUI::Window& window)
-{
     static String const help_index_path = TRY(TRY(Manual::PageNode::help_index_page())->path());
     m_go_home_action = GUI::CommonActions::make_go_home_action([this](auto&) {
         m_history.push(help_index_path);
diff --git a/Userland/Applications/Help/MainWidget.h b/Userland/Applications/Help/MainWidget.h
index 4b30e641930a..f004a2d49431 100644
--- a/Userland/Applications/Help/MainWidget.h
+++ b/Userland/Applications/Help/MainWidget.h
@@ -19,6 +19,8 @@ class MainWidget final : public GUI::Widget {
 public:
     virtual ~MainWidget() override = default;
 
+    static ErrorOr<NonnullRefPtr<MainWidget>> try_create();
+
     ErrorOr<void> initialize_fallibles(GUI::Window&);
     ErrorOr<void> set_start_page(Vector<StringView, 2> query_parameters);"
9566f6c8b3362c1b8d8594119b1bfa7fd195be35,2020-05-13 03:19:52,Andreas Kling,paintbrush: Let's have Layer::rect() and Layer::relative_rect(),False,Let's have Layer::rect() and Layer::relative_rect(),paintbrush,"diff --git a/Applications/PaintBrush/ImageEditor.cpp b/Applications/PaintBrush/ImageEditor.cpp
index e49016a2d7bd..99b5f3f91d7a 100644
--- a/Applications/PaintBrush/ImageEditor.cpp
+++ b/Applications/PaintBrush/ImageEditor.cpp
@@ -58,14 +58,13 @@ void ImageEditor::paint_event(GUI::PaintEvent& event)
     }
 
     if (m_active_layer) {
-        painter.draw_rect(m_active_layer->rect().inflated(2, 2), Color::Black);
+        painter.draw_rect(m_active_layer->relative_rect().inflated(2, 2), Color::Black);
     }
 }
 
 static GUI::MouseEvent event_adjusted_for_layer(const GUI::MouseEvent& original_event, const Layer& layer)
 {
     auto position_in_active_layer_coordinates = original_event.position().translated(-layer.location());
-    dbg() << ""adjusted: "" << position_in_active_layer_coordinates;
     return {
         static_cast<GUI::Event::Type>(original_event.type()),
         position_in_active_layer_coordinates, original_event.buttons(),
diff --git a/Applications/PaintBrush/Layer.h b/Applications/PaintBrush/Layer.h
index b0fe8a142d2c..ab7d5e2b1fce 100644
--- a/Applications/PaintBrush/Layer.h
+++ b/Applications/PaintBrush/Layer.h
@@ -49,7 +49,8 @@ class Layer : public RefCounted<Layer> {
     Gfx::Bitmap& bitmap() { return *m_bitmap; }
     Gfx::Size size() const { return bitmap().size(); }
 
-    Gfx::Rect rect() const { return { location(), size() }; }
+    Gfx::Rect relative_rect() const { return { location(), size() }; }
+    Gfx::Rect rect() const { return { {}, size() }; }
 
     const String& name() const { return m_name; }
     void set_name(const String& name) { m_name = name; }"
88ebc44cbf620b09b0e3e307c2e3890b726ebb82,2023-01-02 19:59:12,Andreas Kling,"demos: Remove ""Mouse"" application",False,"Remove ""Mouse"" application",demos,"diff --git a/Base/res/apps/Mouse.af b/Base/res/apps/Mouse.af
deleted file mode 100644
index b198299a01a1..000000000000
--- a/Base/res/apps/Mouse.af
+++ /dev/null
@@ -1,4 +0,0 @@
-[App]
-Name=Mouse
-Executable=/bin/Mouse
-Category=Demos
diff --git a/Base/usr/share/man/man1/Mouse.md b/Base/usr/share/man/man1/Mouse.md
deleted file mode 100644
index a3cca32d4917..000000000000
--- a/Base/usr/share/man/man1/Mouse.md
+++ /dev/null
@@ -1,17 +0,0 @@
-## Name
-
-![Icon](/res/icons/16x16/app-mouse.png) Mouse - Mouse Demo
-
-[Open](file:///bin/Mouse)
-
-## Synopsis
-
-```**sh
-$ Mouse
-```
-
-## Description
-
-Mouse is an application that displays interactive graphical mouse.
-
-It simulates mouse clicks respective of the physical button pressed. It detects and displays corresponding left button, middle button, right button clicks, and middle scroll wheel movements. It also shows side mouse button clicks if supported by the connected mouse.
diff --git a/Userland/Demos/CMakeLists.txt b/Userland/Demos/CMakeLists.txt
index 7c0655c16041..d62468ad60cb 100644
--- a/Userland/Demos/CMakeLists.txt
+++ b/Userland/Demos/CMakeLists.txt
@@ -5,7 +5,6 @@ add_subdirectory(LibGfxDemo)
 add_subdirectory(LibGfxScaleDemo)
 add_subdirectory(Mandelbrot)
 add_subdirectory(ModelGallery)
-add_subdirectory(Mouse)
 add_subdirectory(Screensaver)
 add_subdirectory(Starfield)
 add_subdirectory(Tubes)
diff --git a/Userland/Demos/Mouse/CMakeLists.txt b/Userland/Demos/Mouse/CMakeLists.txt
deleted file mode 100644
index c680a96f0636..000000000000
--- a/Userland/Demos/Mouse/CMakeLists.txt
+++ /dev/null
@@ -1,11 +0,0 @@
-serenity_component(
-    Mouse
-    TARGETS Mouse
-)
-
-set(SOURCES
-    main.cpp
-)
-
-serenity_app(Mouse ICON app-mouse)
-target_link_libraries(Mouse PRIVATE LibCore LibGUI LibGfx LibIPC LibMain)
diff --git a/Userland/Demos/Mouse/main.cpp b/Userland/Demos/Mouse/main.cpp
deleted file mode 100644
index 88c8dcddd88e..000000000000
--- a/Userland/Demos/Mouse/main.cpp
+++ /dev/null
@@ -1,208 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * Copyright (c) 2021, Idan Horowitz <idan.horowitz@serenityos.org>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
-
-#include <AK/Math.h>
-#include <LibCore/System.h>
-#include <LibGUI/Action.h>
-#include <LibGUI/Application.h>
-#include <LibGUI/BoxLayout.h>
-#include <LibGUI/ConnectionToWindowServer.h>
-#include <LibGUI/Frame.h>
-#include <LibGUI/Icon.h>
-#include <LibGUI/Menu.h>
-#include <LibGUI/Menubar.h>
-#include <LibGUI/Painter.h>
-#include <LibGUI/Widget.h>
-#include <LibGUI/Window.h>
-#include <LibGfx/Bitmap.h>
-#include <LibGfx/Path.h>
-#include <LibMain/Main.h>
-#include <unistd.h>
-
-class MainFrame final : public GUI::Frame {
-    C_OBJECT(MainFrame);
-
-public:
-    virtual void timer_event(Core::TimerEvent&) override
-    {
-
-        m_show_scroll_wheel = false;
-        m_double_clicked_buttons = 0;
-        stop_timer();
-        update();
-    }
-
-    virtual void paint_event(GUI::PaintEvent& event) override
-    {
-        GUI::Painter painter(*this);
-        painter.add_clip_rect(event.rect());
-        painter.fill_rect(frame_inner_rect(), Color::White);
-
-        auto buttons = m_buttons | m_double_clicked_buttons;
-
-        auto primary_secondary_switched = GUI::ConnectionToWindowServer::the().are_mouse_buttons_switched();
-        auto primary_pressed = buttons & GUI::MouseButton::Primary;
-        auto secondary_pressed = buttons & GUI::MouseButton::Secondary;
-
-        Gfx::Path path;
-
-        // draw left button
-        path.move_to({ 30, 65 });
-        path.line_to({ 30, 20 });
-        path.line_to({ 65, 12 });
-        path.line_to({ 65, 65 });
-        if (primary_secondary_switched ? secondary_pressed : primary_pressed) {
-            auto button_color = primary_secondary_switched ? Color::LightBlue : Color::MidBlue;
-            painter.fill_path(path, button_color);
-        }
-        painter.stroke_path(path, Color::Black, 1);
-        path.clear();
-
-        // draw right button
-        path.move_to({ 95, 65 });
-        path.line_to({ 95, 12 });
-        path.line_to({ 130, 20 });
-        path.line_to({ 130, 65 });
-        if (primary_secondary_switched ? primary_pressed : secondary_pressed) {
-            auto button_color = primary_secondary_switched ? Color::MidBlue : Color::LightBlue;
-            painter.fill_path(path, button_color);
-        }
-        painter.stroke_path(path, Color::Black, 1);
-        path.clear();
-
-        // draw middle button
-        path.move_to({ 65, 65 });
-        path.line_to({ 65, 12 });
-        path.line_to({ 95, 12 });
-        path.line_to({ 95, 65 });
-        if (buttons & GUI::MouseButton::Middle)
-            painter.fill_path(path, Color::Blue);
-        painter.stroke_path(path, Color::Black, 1);
-        path.clear();
-
-        if (m_show_scroll_wheel) {
-            auto radius = 10;
-            auto off_x = 80;
-            auto off_y = 38;
-
-            Gfx::IntPoint p1;
-            Gfx::IntPoint p2;
-            Gfx::IntPoint p3;
-            Gfx::IntPoint p4;
-
-            p1.set_x(radius * AK::cos(AK::Pi<double> * m_wheel_delta_acc / 18.) + off_x);
-            p1.set_y(radius * AK::sin(AK::Pi<double> * m_wheel_delta_acc / 18.) + off_y);
-
-            p2.set_x(radius * AK::cos(AK::Pi<double> * (m_wheel_delta_acc + 18) / 18.) + off_x);
-            p2.set_y(radius * AK::sin(AK::Pi<double> * (m_wheel_delta_acc + 18) / 18.) + off_y);
-
-            p3.set_x(radius * AK::cos(AK::Pi<double> * (m_wheel_delta_acc + 9) / 18.) + off_x);
-            p3.set_y(radius * AK::sin(AK::Pi<double> * (m_wheel_delta_acc + 9) / 18.) + off_y);
-
-            p4.set_x(radius * AK::cos(AK::Pi<double> * (m_wheel_delta_acc + 27) / 18.) + off_x);
-            p4.set_y(radius * AK::sin(AK::Pi<double> * (m_wheel_delta_acc + 27) / 18.) + off_y);
-
-            painter.draw_line(p1, p2, Color::Red, 2);
-            painter.draw_line(p3, p4, Color::Red, 2);
-        }
-
-        // draw mouse outline
-        path.move_to({ 30, 140 });
-        path.line_to({ 30, 65 });
-        path.line_to({ 130, 65 });
-        path.line_to({ 130, 140 });
-        path.line_to({ 30, 140 });
-        painter.stroke_path(path, Color::Black, 1);
-        path.clear();
-
-        // draw forward button
-        path.move_to({ 30, 43 });
-        path.line_to({ 25, 43 });
-        path.line_to({ 25, 60 });
-        path.line_to({ 30, 60 });
-        if (buttons & GUI::MouseButton::Forward)
-            painter.fill_rect({ 26, 44, 4, 16 }, Color::Blue);
-        painter.stroke_path(path, Color::Black, 1);
-        path.clear();
-
-        // draw back button
-        path.move_to({ 30, 70 });
-        path.line_to({ 25, 70 });
-        path.line_to({ 25, 87 });
-        path.line_to({ 30, 87 });
-        if (buttons & GUI::MouseButton::Backward)
-            painter.fill_rect({ 26, 71, 4, 16 }, Color::Blue);
-        painter.stroke_path(path, Color::Black, 1);
-        path.clear();
-    }
-
-    void mousedown_event(GUI::MouseEvent& event) override
-    {
-        m_buttons = event.buttons();
-        update();
-    }
-
-    void mouseup_event(GUI::MouseEvent& event) override
-    {
-        m_buttons = event.buttons();
-        update();
-    }
-
-    void mousewheel_event(GUI::MouseEvent& event) override
-    {
-        m_wheel_delta_acc = (m_wheel_delta_acc + event.wheel_delta_y() + 36) % 36;
-        m_show_scroll_wheel = true;
-        update();
-        if (has_timer())
-            stop_timer();
-        start_timer(500);
-    }
-
-    void doubleclick_event(GUI::MouseEvent& event) override
-    {
-        m_double_clicked_buttons |= event.button();
-        update();
-        if (has_timer())
-            stop_timer();
-        start_timer(500);
-    }
-
-private:
-    unsigned m_buttons { 0 };
-    unsigned m_wheel_delta_acc { 0 };
-    bool m_show_scroll_wheel { false };
-    unsigned m_double_clicked_buttons { 0 };
-};
-
-ErrorOr<int> serenity_main(Main::Arguments arguments)
-{
-    auto app = TRY(GUI::Application::try_create(arguments));
-    auto app_icon = TRY(GUI::Icon::try_create_default_icon(""app-mouse""sv));
-
-    TRY(Core::System::pledge(""stdio recvfd sendfd rpath""));
-    TRY(Core::System::unveil(""/res"", ""r""));
-    TRY(Core::System::unveil(nullptr, nullptr));
-
-    auto window = TRY(GUI::Window::try_create());
-    window->set_title(""Mouse demo"");
-    window->set_icon(app_icon.bitmap_for_size(16));
-    window->resize(160, 155);
-
-    auto main_widget = TRY(window->try_set_main_widget<MainFrame>());
-    main_widget->set_fill_with_background_color(true);
-
-    auto file_menu = TRY(window->try_add_menu(""&File""));
-    TRY(file_menu->try_add_action(GUI::CommonActions::make_quit_action([&](auto&) { app->quit(); })));
-
-    auto help_menu = TRY(window->try_add_menu(""&Help""));
-    TRY(help_menu->try_add_action(GUI::CommonActions::make_command_palette_action(window)));
-    TRY(help_menu->try_add_action(GUI::CommonActions::make_about_action(""Mouse Demo"", app_icon, window)));
-
-    window->set_resizable(false);
-    window->show();
-    return app->exec();
-}"
489bea0c23c87ed20718c0fa54192a1fd01a244f,2025-02-13 07:43:49,Andrew Kaster,libtest: Remove uses of gettimeofday in favor of AK::Time,False,Remove uses of gettimeofday in favor of AK::Time,libtest,"diff --git a/Libraries/LibTest/TestRunnerUtil.h b/Libraries/LibTest/TestRunnerUtil.h
index 119b4add7753..e38321481712 100644
--- a/Libraries/LibTest/TestRunnerUtil.h
+++ b/Libraries/LibTest/TestRunnerUtil.h
@@ -6,6 +6,7 @@
 
 #pragma once
 
+#include <AK/Time.h>
 #include <LibCore/DirIterator.h>
 #include <fcntl.h>
 #include <sys/stat.h>
@@ -15,10 +16,8 @@ namespace Test {
 
 inline double get_time_in_ms()
 {
-    struct timeval tv1;
-    auto return_code = gettimeofday(&tv1, nullptr);
-    VERIFY(return_code >= 0);
-    return static_cast<double>(tv1.tv_sec) * 1000.0 + static_cast<double>(tv1.tv_usec) / 1000.0;
+    auto now = UnixDateTime::now();
+    return static_cast<double>(now.milliseconds_since_epoch());
 }
 
 template<typename Callback>
diff --git a/Libraries/LibTest/TestSuite.cpp b/Libraries/LibTest/TestSuite.cpp
index 7d7af043eee9..4b8e09770599 100644
--- a/Libraries/LibTest/TestSuite.cpp
+++ b/Libraries/LibTest/TestSuite.cpp
@@ -6,6 +6,7 @@
  */
 
 #include <AK/Function.h>
+#include <AK/Time.h>
 #include <LibCore/ArgsParser.h>
 #include <LibTest/Macros.h>
 #include <LibTest/TestResult.h>
@@ -22,21 +23,15 @@ class TestElapsedTimer {
 public:
     TestElapsedTimer() { restart(); }
 
-    void restart() { gettimeofday(&m_started, nullptr); }
+    void restart() { m_started = UnixDateTime::now(); }
 
     u64 elapsed_milliseconds()
     {
-        struct timeval now = {};
-        gettimeofday(&now, nullptr);
-
-        struct timeval delta = {};
-        timersub(&now, &m_started, &delta);
-
-        return delta.tv_sec * 1000 + delta.tv_usec / 1000;
+        return (UnixDateTime::now() - m_started).to_milliseconds();
     }
 
 private:
-    struct timeval m_started = {};
+    UnixDateTime m_started;
 };
 
 // Declared in Macros.h"
96de4ef7e00f44b3f7913db221625940da7f561a,2024-10-10 14:09:28,0x4261756D,libtextcodec: Add SingleByteEncoders,False,Add SingleByteEncoders,libtextcodec,"diff --git a/Tests/LibTextCodec/TestTextEncoders.cpp b/Tests/LibTextCodec/TestTextEncoders.cpp
index 8ed0759bb684..499de5d2a88b 100644
--- a/Tests/LibTextCodec/TestTextEncoders.cpp
+++ b/Tests/LibTextCodec/TestTextEncoders.cpp
@@ -153,3 +153,22 @@ TEST_CASE(test_gb18030_encoder)
     EXPECT(processed_bytes[2] == 0xFE);
     EXPECT(processed_bytes[3] == 0xFE);
 }
+
+TEST_CASE(test_windows1252_encoder)
+{
+    auto encoder = TextCodec::encoder_for_exact_name(""windows-1252""sv);
+    auto test_string = ""ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏfoo€""sv;
+    Vector<u8> processed_bytes;
+    MUST(encoder.value().process(
+        Utf8View(test_string),
+        [&](u8 byte) { dbgln(""{}"", processed_bytes.size()); return processed_bytes.try_append(byte); },
+        [&](u32) -> ErrorOr<void> { EXPECT(false); return {}; }));
+    EXPECT(processed_bytes.size() == 20);
+    for (u8 i = 0; i < 15; i++) {
+        EXPECT(processed_bytes[i] == (0xC0 + i));
+    }
+    EXPECT(processed_bytes[16] == 0x66);
+    EXPECT(processed_bytes[17] == 0x6F);
+    EXPECT(processed_bytes[18] == 0x6F);
+    EXPECT(processed_bytes[19] == 0x80);
+}
diff --git a/Userland/Libraries/LibTextCodec/Encoder.cpp b/Userland/Libraries/LibTextCodec/Encoder.cpp
index 540e3e782bd0..fadf264d551b 100644
--- a/Userland/Libraries/LibTextCodec/Encoder.cpp
+++ b/Userland/Libraries/LibTextCodec/Encoder.cpp
@@ -22,6 +22,37 @@ EUCJPEncoder s_euc_jp_encoder;
 ISO2022JPEncoder s_iso_2022_jp_encoder;
 ShiftJISEncoder s_shift_jis_encoder;
 EUCKREncoder s_euc_kr_encoder;
+
+// s_{encoding}_index is generated from https://encoding.spec.whatwg.org/indexes.json
+// Found separately in https://encoding.spec.whatwg.org/index-{encoding}.txt
+SingleByteEncoder s_ibm866_encoder { s_ibm866_index };
+SingleByteEncoder s_latin2_encoder { s_iso_8859_2_index };
+SingleByteEncoder s_latin3_encoder { s_iso_8859_3_index };
+SingleByteEncoder s_latin4_encoder { s_iso_8859_4_index };
+SingleByteEncoder s_latin_cyrillic_encoder { s_iso_8859_5_index };
+SingleByteEncoder s_latin_arabic_encoder { s_iso_8859_6_index };
+SingleByteEncoder s_latin_greek_encoder { s_iso_8859_7_index };
+SingleByteEncoder s_latin_hebrew_encoder { s_iso_8859_8_index };
+SingleByteEncoder s_latin6_encoder { s_iso_8859_10_index };
+SingleByteEncoder s_latin7_encoder { s_iso_8859_13_index };
+SingleByteEncoder s_latin8_encoder { s_iso_8859_14_index };
+SingleByteEncoder s_latin9_encoder { s_iso_8859_15_index };
+SingleByteEncoder s_latin10_encoder { s_iso_8859_16_index };
+SingleByteEncoder s_centraleurope_encoder { s_windows_1250_index };
+SingleByteEncoder s_cyrillic_encoder { s_windows_1251_index };
+SingleByteEncoder s_hebrew_encoder { s_windows_1255_index };
+SingleByteEncoder s_koi8r_encoder { s_koi8_r_index };
+SingleByteEncoder s_koi8u_encoder { s_koi8_u_index };
+SingleByteEncoder s_mac_roman_encoder { s_macintosh_index };
+SingleByteEncoder s_windows874_encoder { s_windows_874_index };
+SingleByteEncoder s_windows1252_encoder { s_windows_1252_index };
+SingleByteEncoder s_windows1253_encoder { s_windows_1253_index };
+SingleByteEncoder s_turkish_encoder { s_windows_1254_index };
+SingleByteEncoder s_windows1256_encoder { s_windows_1256_index };
+SingleByteEncoder s_windows1257_encoder { s_windows_1257_index };
+SingleByteEncoder s_windows1258_encoder { s_windows_1258_index };
+SingleByteEncoder s_mac_cyrillic_encoder { s_x_mac_cyrillic_index };
+
 }
 
 Optional<Encoder&> encoder_for_exact_name(StringView encoding)
@@ -42,6 +73,60 @@ Optional<Encoder&> encoder_for_exact_name(StringView encoding)
         return s_gb18030_encoder;
     if (encoding.equals_ignoring_ascii_case(""gbk""sv))
         return s_gbk_encoder;
+    if (encoding.equals_ignoring_ascii_case(""ibm866""sv))
+        return s_ibm866_encoder;
+    if (encoding.equals_ignoring_ascii_case(""iso-8859-2""sv))
+        return s_latin2_encoder;
+    if (encoding.equals_ignoring_ascii_case(""iso-8859-3""sv))
+        return s_latin3_encoder;
+    if (encoding.equals_ignoring_ascii_case(""iso-8859-4""sv))
+        return s_latin4_encoder;
+    if (encoding.equals_ignoring_ascii_case(""iso-8859-5""sv))
+        return s_latin_cyrillic_encoder;
+    if (encoding.equals_ignoring_ascii_case(""iso-8859-6""sv))
+        return s_latin_arabic_encoder;
+    if (encoding.equals_ignoring_ascii_case(""iso-8859-7""sv))
+        return s_latin_greek_encoder;
+    if (encoding.is_one_of_ignoring_ascii_case(""iso-8859-8""sv, ""iso-8859-8-i""sv))
+        return s_latin_hebrew_encoder;
+    if (encoding.equals_ignoring_ascii_case(""iso-8859-10""sv))
+        return s_latin6_encoder;
+    if (encoding.equals_ignoring_ascii_case(""iso-8859-13""sv))
+        return s_latin7_encoder;
+    if (encoding.equals_ignoring_ascii_case(""iso-8859-14""sv))
+        return s_latin8_encoder;
+    if (encoding.equals_ignoring_ascii_case(""iso-8859-15""sv))
+        return s_latin9_encoder;
+    if (encoding.equals_ignoring_ascii_case(""iso-8859-16""sv))
+        return s_latin10_encoder;
+    if (encoding.equals_ignoring_ascii_case(""koi8-r""sv))
+        return s_koi8r_encoder;
+    if (encoding.equals_ignoring_ascii_case(""koi8-u""sv))
+        return s_koi8u_encoder;
+    if (encoding.equals_ignoring_ascii_case(""macintosh""sv))
+        return s_mac_roman_encoder;
+    if (encoding.equals_ignoring_ascii_case(""windows-874""sv))
+        return s_windows874_encoder;
+    if (encoding.equals_ignoring_ascii_case(""windows-1250""sv))
+        return s_centraleurope_encoder;
+    if (encoding.equals_ignoring_ascii_case(""windows-1251""sv))
+        return s_cyrillic_encoder;
+    if (encoding.equals_ignoring_ascii_case(""windows-1252""sv))
+        return s_windows1252_encoder;
+    if (encoding.equals_ignoring_ascii_case(""windows-1253""sv))
+        return s_windows1253_encoder;
+    if (encoding.equals_ignoring_ascii_case(""windows-1254""sv))
+        return s_turkish_encoder;
+    if (encoding.equals_ignoring_ascii_case(""windows-1255""sv))
+        return s_hebrew_encoder;
+    if (encoding.equals_ignoring_ascii_case(""windows-1256""sv))
+        return s_windows1256_encoder;
+    if (encoding.equals_ignoring_ascii_case(""windows-1257""sv))
+        return s_windows1257_encoder;
+    if (encoding.equals_ignoring_ascii_case(""windows-1258""sv))
+        return s_windows1258_encoder;
+    if (encoding.equals_ignoring_ascii_case(""x-mac-cyrillic""sv))
+        return s_mac_cyrillic_encoder;
     dbgln(""TextCodec: No encoder implemented for encoding '{}'"", encoding);
     return {};
 }
@@ -551,4 +636,34 @@ ErrorOr<void> GB18030Encoder::process(Utf8View input, Function<ErrorOr<void>(u8)
     return {};
 }
 
+// https://encoding.spec.whatwg.org/#single-byte-encoder
+template<Integral ArrayType>
+ErrorOr<void> SingleByteEncoder<ArrayType>::process(Utf8View input, Function<ErrorOr<void>(u8)> on_byte, Function<ErrorOr<void>(u32)> on_error)
+{
+    for (u32 const code_point : input) {
+        if (code_point < 0x80) {
+            // 2. If code point is an ASCII code point, return a byte whose value is code point.
+            TRY(on_byte(static_cast<u8>(code_point)));
+        } else {
+            Optional<u8> pointer = {};
+            for (u8 i = 0; i < m_translation_table.size(); i++) {
+                if (m_translation_table[i] == code_point) {
+                    // 3. Let pointer be the index pointer for code point in index single-byte.
+                    pointer = i;
+                    break;
+                }
+            }
+            if (pointer.has_value()) {
+                // 5. Return a byte whose value is pointer + 0x80.
+                TRY(on_byte(pointer.value() + 0x80));
+            } else {
+                // 4. If pointer is null, return error with code point.
+                TRY(on_error(code_point));
+            }
+        }
+    }
+    // 1. If code point is end-of-queue, return finished.
+    return {};
+}
+
 }
diff --git a/Userland/Libraries/LibTextCodec/Encoder.h b/Userland/Libraries/LibTextCodec/Encoder.h
index 8241fb67153a..32bc02127158 100644
--- a/Userland/Libraries/LibTextCodec/Encoder.h
+++ b/Userland/Libraries/LibTextCodec/Encoder.h
@@ -72,6 +72,19 @@ class GB18030Encoder final : public Encoder {
 private:
     IsGBK m_is_gbk { IsGBK::No };
 };
+template<Integral ArrayType = u32>
+class SingleByteEncoder final : public Encoder {
+public:
+    SingleByteEncoder(Array<ArrayType, 128> translation_table)
+        : m_translation_table(translation_table)
+    {
+    }
+
+    virtual ErrorOr<void> process(Utf8View, Function<ErrorOr<void>(u8)> on_byte, Function<ErrorOr<void>(u32)> on_error) override;
+
+private:
+    Array<ArrayType, 128> m_translation_table;
+};
 
 Optional<Encoder&> encoder_for_exact_name(StringView encoding);
 Optional<Encoder&> encoder_for(StringView label);"
4adbddeb361069711cca305cfda01741c72342fe,2019-07-18 00:24:09,Andreas Kling,audioserver: Use Vector::append(Vector&&) for pending mix buffers.,False,Use Vector::append(Vector&&) for pending mix buffers.,audioserver,"diff --git a/Servers/AudioServer/ASMixer.cpp b/Servers/AudioServer/ASMixer.cpp
index 554085c44090..2881f1717c44 100644
--- a/Servers/AudioServer/ASMixer.cpp
+++ b/Servers/AudioServer/ASMixer.cpp
@@ -33,9 +33,7 @@ void ASMixer::mix()
     for (;;) {
         {
             CLocker lock(m_lock);
-            for (const auto& buf : m_pending_mixing)
-                active_mix_buffers.append(buf);
-            m_pending_mixing.clear();
+            active_mix_buffers.append(move(m_pending_mixing));
         }
 
         // ### use a wakeup of some kind rather than this garbage"
198a1a6877d0183403a0394989607618a8d41832,2019-04-13 18:02:18,Andreas Kling,minesweeper: Add some menus.,False,Add some menus.,minesweeper,"diff --git a/Games/Minesweeper/main.cpp b/Games/Minesweeper/main.cpp
index ef623d278b97..3330793a5a1f 100644
--- a/Games/Minesweeper/main.cpp
+++ b/Games/Minesweeper/main.cpp
@@ -3,6 +3,9 @@
 #include <LibGUI/GWindow.h>
 #include <LibGUI/GBoxLayout.h>
 #include <LibGUI/GButton.h>
+#include <LibGUI/GMenu.h>
+#include <LibGUI/GMenuBar.h>
+#include <LibGUI/GAction.h>
 
 int main(int argc, char** argv)
 {
@@ -30,6 +33,29 @@ int main(int argc, char** argv)
         field->reset();
     };
 
+    auto menubar = make<GMenuBar>();
+
+    auto app_menu = make<GMenu>(""Minesweeper"");
+    app_menu->add_action(GAction::create(""Quit"", { Mod_Alt, Key_F4 }, [] (const GAction&) {
+        GApplication::the().quit(0);
+        return;
+    }));
+    menubar->add_menu(move(app_menu));
+
+    auto game_menu = make<GMenu>(""Game"");
+    game_menu->add_action(GAction::create(""New game"", { Mod_None, Key_F2 }, [field] (const GAction&) {
+        field->reset();
+    }));
+    menubar->add_menu(move(game_menu));
+
+    auto help_menu = make<GMenu>(""Help"");
+    help_menu->add_action(GAction::create(""About"", [] (const GAction&) {
+        dbgprintf(""FIXME: Implement Help/About\n"");
+    }));
+    menubar->add_menu(move(help_menu));
+
+    app.set_menubar(move(menubar));
+
     window->show();
 
     return app.exec();
diff --git a/Kernel/KeyCode.h b/Kernel/KeyCode.h
index 31e9dd13e6c4..bd62dceb3186 100644
--- a/Kernel/KeyCode.h
+++ b/Kernel/KeyCode.h
@@ -111,6 +111,7 @@ enum KeyCode : byte {
 };
 
 enum KeyModifier {
+    Mod_None = 0x00,
     Mod_Alt = 0x01,
     Mod_Ctrl = 0x02,
     Mod_Shift = 0x04,"
1a0c11cea2a80f081e886af054fd6322ab591c12,2020-08-30 14:01:04,Ben Wiederhake,visualbuilder: Avoid unnecessary lambda,False,Avoid unnecessary lambda,visualbuilder,"diff --git a/DevTools/VisualBuilder/VBWidgetRegistry.cpp b/DevTools/VisualBuilder/VBWidgetRegistry.cpp
index 3c47cc5ca972..236699815136 100644
--- a/DevTools/VisualBuilder/VBWidgetRegistry.cpp
+++ b/DevTools/VisualBuilder/VBWidgetRegistry.cpp
@@ -154,11 +154,8 @@ static RefPtr<GUI::Widget> build_gwidget(VBWidgetType type, GUI::Widget* parent)
 RefPtr<GUI::Widget> VBWidgetRegistry::build_gwidget(VBWidget& widget, VBWidgetType type, GUI::Widget* parent, NonnullOwnPtrVector<VBProperty>& properties)
 {
     auto gwidget = ::build_gwidget(type, parent);
-    auto add_readonly_property = [&](const String& name, const GUI::Variant& value) {
-        auto property = make<VBProperty>(widget, name, value);
-        property->set_readonly(true);
-        properties.append(move(property));
-    };
-    add_readonly_property(""class"", to_class_name(type));
+    auto property = make<VBProperty>(widget, ""class"", to_class_name(type));
+    property->set_readonly(true);
+    properties.append(move(property));
     return gwidget;
 }"