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1354eb1ac2
When a shorthand like `background` containing `var()` is used in a `::selection` rule, the shorthand was filtered out by the pseudo- element property whitelist before variable resolution could occur. This left PendingSubstitutionStyleValue longhands unresolved, causing either a crash or incorrect computed values. Allow unresolved shorthands to bypass the pseudo-element filter so variable resolution can proceed. After resolution and expansion into longhands, filter out any that the pseudo-element does not support. Fixes #8625. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
19 lines
423 B
HTML
19 lines
423 B
HTML
<!DOCTYPE html>
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<style>
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:root {
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--selection-bg: lightblue;
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}
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::selection {
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background: var(--selection-bg);
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}
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</style>
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<p id="target">Select me</p>
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<script src="../include.js"></script>
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<script>
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test(() => {
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const target = document.getElementById("target");
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const style = getComputedStyle(target, "::selection");
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println(style.backgroundColor);
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});
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</script>
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