← WebKit — 2026-W39

c150a5007f05d085d9c422618fa819df622420c6  Implement the CSS corner and corner-* shorthands

not a security fix confidence 0.05 signal score 10.88 Source/WebCore/css
Classified as not security-relevant.
Triage note: Adds corner-top-left etc. shorthands behind CSSCornersShorthandEnabled (defaultValue false) with new CSSProperties.json entries and consumeCornerSingleShorthand. Feature work, disabled by default.
This commit was flagged by the signal scorer and reviewed by AI (not a human). It is listed only so the triage is auditable; there is no root-cause analysis because this is not a vulnerability fix.
Structural signals: smartptr_member_added (+6.47), bounds_guard (+4.32), null_guard (+2.59), msg_noise (-2.5), area:Source/WebCore/css (+2.0), large_churn (-2.0)

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