RESOLVED FIXED 251499
[css-animations] composite operation of implicit keyframes for CSS Animations should be "replace" 
https://bugs.webkit.org/show_bug.cgi?id=251499
Summary [css-animations] composite operation of implicit keyframes for CSS Animations...
Antoine Quint
Reported 2023-02-01 04:06:34 PST
The test css/css-animations/KeyframeEffect-getKeyframes.tentative.html was changed recently in https://github.com/web-platform-tests/wpt/commit/1a5c61d2ca9d0f2c2801adf2b433c7931512152f to account for the `animation-composition` property. We need to update our implementation to pass this test, or indicate whether it is incorrect.
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Antoine Quint
Comment 1 2023-02-01 05:24:31 PST
*** Bug 251498 has been marked as a duplicate of this bug. ***
Antoine Quint
Comment 2 2023-02-01 07:11:30 PST
So the relevant piece of information here is that getKeyframes() should return "replace" for the "composite" property for implicit keyframes of a CSS Animation, per step 2 of https://drafts.csswg.org/css-animations-2/#keyframes.
Antoine Quint
Comment 3 2023-02-01 07:37:09 PST
Pull request: https://github.com/WebKit/WebKit/pull/9453
Antoine Quint
Comment 4 2023-02-01 07:37:42 PST
Submitted web-platform-tests pull request: https://github.com/web-platform-tests/wpt/pull/38297
EWS
Comment 5 2023-02-01 22:27:42 PST
merge-queue failed to commit PR to repository. To retry, remove any blocking labels and re-apply merge-queue label
EWS
Comment 6 2023-02-01 22:32:30 PST
Committed 259739@main (52923169468b): <https://commits.webkit.org/259739@main> Reviewed commits have been landed. Closing PR #9453 and removing active labels.
Radar WebKit Bug Importer
Comment 7 2023-02-01 22:33:19 PST
<rdar://problem/104947614>
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