Bug 220532

Summary:	[selectors] :host(:not(.a .b)) should be an invalid selector
Product:	WebKit	Reporter:	Manuel Rego Casasnovas <rego>
Component:	CSS	Assignee:	Antti Koivisto <koivisto>
Status:	NEW ---
Severity:	Normal	CC:	ahmad.saleem792, ap, bfulgham, rniwa, simon.fraser, webkit-bug-importer, zalan
Priority:	P2	Keywords:	BrowserCompat, InRadar, WebExposed
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
Bug Depends on:
Bug Blocks:	148695

Description Manuel Rego Casasnovas 2021-01-11 22:43:46 PST

There's only one test case failing in the following WPT test:
https://wpt.fyi/results/css/selectors/parsing/parse-not.html

That test case is checking that ":host(:not(.a .b))" is an invalid selector.
It's passing in Chromium and Firefox, but failing in WebKit.

Comment 1 Radar WebKit Bug Importer 2021-01-18 22:44:13 PST

<rdar://problem/73341243>