Bug 255530

Summary:	[css-nesting] Fix nested at-rules parsing when inserted with CSSOM
Product:	WebKit	Reporter:	Matthieu Dubet <m_dubet>
Component:	WebCore Misc.	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified

Description Matthieu Dubet 2023-04-17 10:03:17 PDT

CSSOM can start inserting/parsing an at-rule already in a nested context (bypass the "normal" nested stack).

https://github.com/WebKit/WebKit/blob/main/LayoutTests/imported/w3c/web-platform-tests/css/css-nesting/cssom-expected.txt#L9

Comment 1 Matthieu Dubet 2023-04-17 10:03:34 PDT

rdar://107760234

Comment 2 Matthieu Dubet 2023-04-17 10:08:37 PDT

Pull request: https://github.com/WebKit/WebKit/pull/12810

Comment 3 EWS 2023-04-17 11:27:22 PDT

Committed 263028@main (ab88221743a9): <https://commits.webkit.org/263028@main>

Reviewed commits have been landed. Closing PR #12810 and removing active labels.