Bug 311144

Summary: Add support for font-synthesis-style: oblique-only
Product: WebKit Reporter: Brent Fulgham <bfulgham>
Component: New BugsAssignee: Brent Fulgham <bfulgham>
Status: RESOLVED FIXED    
Severity: Normal CC: webkit-bug-importer
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   

Brent Fulgham
Reported 2026-03-30 16:16:59 PDT
The CSS Fonts 4 specification adds an 'oblique-only' value for the font-synthesis-style property. When set, it blocks italic-to-oblique face fallback in the font selection algorithm and prevents italic synthesis, while still permitting oblique synthesis from normal faces. This missing longhand was the reason we were failing imported/w3c/web-platform-tests/css/css-fonts/font-synthesis-style-oblique-only.html
Attachments
Radar WebKit Bug Importer
Comment 1 2026-03-30 16:26:06 PDT
Brent Fulgham
Comment 2 2026-03-30 16:34:39 PDT
Brent Fulgham
Comment 3 2026-03-30 16:42:41 PDT
EWS
Comment 4 2026-04-01 18:21:59 PDT
Committed 310409@main (671f52fa7c41): <https://commits.webkit.org/310409@main> Reviewed commits have been landed. Closing PR #61727 and removing active labels.
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