https://wpt.fyi/results/css/css-highlight-api/highlight-pseudo-parsing.html?label=experimental&label=master&aligned
<rdar://problem/117864974>
Highlight pseudos need a special case here similar to ::part(): https://searchfox.org/wubkat/rev/67be1e0883407c894c71a4c903e5030059a7b5e9/Source/WebCore/css/CSSSelector.cpp#738-749 This way ::highlight(foo) serializes as such instead of serializing to ::highlight
Pull request: https://github.com/WebKit/WebKit/pull/19900
Committed 270146@main (b63317aba187): <https://commits.webkit.org/270146@main> Reviewed commits have been landed. Closing PR #19900 and removing active labels.