Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 762b3509edb3672d4aad07a8d09add9ad36fec0d
https://github.com/WebKit/WebKit/commit/762b3509edb3672d4aad07a8d09add9ad36fec0d
Author: Megan Gardner <[email protected]>
Date: 2026-07-17 (Fri, 17 Jul 2026)
Changed paths:
M LayoutTests/TestExpectations
M Source/WebCore/rendering/TextBoxPainter.cpp
Log Message:
-----------
[Custom Highlight] ::highlight() decoration replaces the originating
element's decoration instead of layering over it.
https://bugs.webkit.org/show_bug.cgi?id=319675
rdar://182523249
Reviewed by Jessica Cheung.
When a highlight's text-decoration covered text that was a direct child of its
block, WebKit painted only the highlight's decoration and dropped the
originating
element's own — the root-inline-box shortcut in
collectDecoratingBoxesForBackgroundPainting/...ForegroundPainting appended just
the highlight's override and
returned, never adding the box's own decoration (the non-root path already
layers ancestor decorations beneath). Append the originating box's own
decoration as a
layer beneath the highlight's in that shortcut, guarded so it only kicks in
when a highlight actually changed the decoration.
imported/w3c/web-platform-tests/css/css-highlight-api/painting/custom-highlight-painting-019.html
* LayoutTests/TestExpectations:
* Source/WebCore/rendering/TextBoxPainter.cpp:
(WebCore::TextBoxPainter::collectDecoratingBoxesForBackgroundPainting):
(WebCore::TextBoxPainter::collectDecoratingBoxesForForegroundPainting):
Canonical link: https://commits.webkit.org/317439@main
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