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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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12
Tests/LibWeb/Ref/css-unknown-webkit-pseudo-element.html Normal file
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@ -0,0 +1,12 @@
<!doctype html>
<link rel="match" href="reference/text-div.html" />
<style>
* {
visibility: hidden;
}
.d-none,
.oops::-webkit-asdf {
visibility: visible;
}
</style>
<div class="d-none">Well, hello friends!</div>