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LibWeb: Support obsolete but required -webkit- CSS parsing quirk

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As outlined in: https://www.w3.org/TR/selectors-4/#compat

We now do not treat unknown webkit pseudo-elements as invalid at parse
time, and also support serializing these elements.

Fixes: #21959
This commit is contained in:
Shannon Booth 2023-12-10 22:06:55 +13:00 • committed by Alexander Kalenik
parent 83758d4cdd
commit ed97946975
9 changed files with 76 additions and 6 deletions
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14
Tests/LibWeb/Text/input/css/unknown-webkit-pseudo-element-serialization.html Normal file
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@ -0,0 +1,14 @@
<!DOCTYPE html><style type="text/css">
.d-none,
.oops::-webkit-asDF {
display: none !important;
}
</style><div class="d-none">should not be displayed</div>
<script src="../include.js"></script>
<script>
test(() => {
let rules = document.styleSheets[0].cssRules;
let rule = rules.item(0);
println(rule.selectorText);
});
</script>