Bug 264104

Summary:	[CSS Highlight API] Fix serialization for CSS highlight pseudo-elements
Product:	WebKit	Reporter:	Tim Nguyen (:ntim) <ntim>
Component:	CSS	Assignee:	Tim Nguyen (:ntim) <ntim>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Tim Nguyen (:ntim) 2023-11-02 11:29:14 PDT

https://wpt.fyi/results/css/css-highlight-api/highlight-pseudo-parsing.html?label=experimental&label=master&aligned

Comment 1 Radar WebKit Bug Importer 2023-11-02 11:29:23 PDT

<rdar://problem/117864974>

Comment 2 Tim Nguyen (:ntim) 2023-11-02 11:33:57 PDT

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

Comment 3 Tim Nguyen (:ntim) 2023-11-02 11:50:33 PDT

Pull request: https://github.com/WebKit/WebKit/pull/19900

Comment 4 EWS 2023-11-02 15:20:01 PDT

Committed 270146@main (b63317aba187): <https://commits.webkit.org/270146@main>

Reviewed commits have been landed. Closing PR #19900 and removing active labels.