Bug 189692

Summary: Implement CSS Custom Properties and Values API Level 1
Product: WebKit Reporter: Justin Michaud <justin_michaud>
Component: CSSAssignee: Nobody <webkit-unassigned>
Status: RESOLVED FIXED    
Severity: Normal CC: 709922234, argyle, bfulgham, bramus, chi187, cyb.ai.815, dino, emilio, graouts, jonlee, kngan, koivisto, kris, kyle.bavender, legacyazd, nimajneb0905, rniwa, simon.fraser, webkit-bug-importer, zalan
Priority: P2 Keywords: InRadar
Version: WebKit Nightly Build   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on: 189694, 189764, 189819, 189909, 190038, 190039, 190303, 192324, 192325, 210963, 247212, 248871, 249027, 249071, 249088, 249096, 249107, 249127, 249161, 249216, 249293, 249302, 249305, 249465, 249554, 249579, 249763, 249774, 249981, 250446, 250448, 250556, 250567, 250571, 250703, 250898, 251084, 251141, 251517, 251575, 251672    
Bug Blocks: 189834    

Comment 1 Justin Michaud 2018-09-18 00:06:49 PDT
<rdar://30061591>
Comment 2 Simon Fraser (smfr) 2018-09-18 11:07:43 PDT
You should make a patch for Source/WebCore/features.json to say this is "under development".
Comment 3 legacyazd 2022-05-16 01:56:05 PDT
This is a useful feature. See the Stack Overflow post: [animating gradients in CSS](https://stackoverflow.com/a/63848864/8583692) for a use case.

Only Firefox (related bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1684605) and Safari has not yet implemented this.
Comment 4 Antti Koivisto 2023-01-04 09:19:38 PST
This is enabled by default since <https://commits.webkit.org/258246@main>
Comment 5 Sergey Rubanov 2023-07-04 19:34:18 PDT
What is the stable version of Safari where this feature was shipped? Was it Safari 16.4? I want to update the https://ishoudinireadyyet.com table.
Comment 6 Sergey Rubanov 2023-07-04 19:49:07 PDT
Just found it in the 16.4 release notes (https://developer.apple.com/documentation/safari-release-notes/safari-16_4-release-notes)