2028484 - [wpt-sync] Sync PR 58832 - maps "supports-at-rule" web feature

Status: RESOLVED FIXED

(Core :: CSS Parsing and Computation, task, P4)

Description

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Sync web-platform-tests PR 58832 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/web-platform-tests/wpt/pull/58832
Details from upstream follow.

Chris Cuellar <[e-mail]> wrote:

maps "supports-at-rule" web feature

web feature docs: https://github.com/web-platform-dx/web-features/blob/main/features/supports-at-rule.yml

cc @jugglinmike for review

---

As of 2025-12-05, the wpt-pr-bot is requesting reviews from code owners for changes to WEB_FEATURES.yml files. To learn more about the purpose of these files, check out this presentation from TPAC 2025, Annotating WPT to Surface the Status of the Platform

Comment 1

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Pushed to try https://treeherder.mozilla.org/#/jobs?repo=try&revision=502fdc72e8db517c639e6eb3321b3dc5836c4c0a

Comment 2

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

The PR was not expected to affect any tests, but the try push wasn't a success. Check the try results for infrastructure issues

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://github.com/mozilla-firefox/firefox/commit/c1157fa69032
https://hg.mozilla.org/integration/autoland/rev/a79ba2138627
[wpt PR 58832] - maps "supports-at-rule" web feature, a=testonly

Comment 4

[rperta]

https://hg.mozilla.org/mozilla-central/rev/a79ba2138627