Re: [csswg-drafts] [css-2025][selectors-4] Add `:is()`, `:where()`, `:has()`, and selector lists in `:not()` to Safe to Release exceptions (#12775)

The CSS Working Group just discussed ``[css-2025][selectors-4] Add `:is()`, `:where()`, `:has()`, and selector lists in `:not()` to Safe to Release exceptions``, and agreed to the following:

* `RESOLVED: add :is(), :where(), and :has() to the safe to release`
* `RESOLVED: selector list in :not() are also safe to release`
* `ACTION SebastianZ to go through selectors-4 and check for additional safe-to-release features`
* `ACTION: SebastianZ to go through selectors-4 and check for additional safe-to-release features`

<details><summary>The full IRC log of that discussion</summary>
&lt;florian> SebastianZ: the spec was last published in Nov 2022<br>
&lt;florian> SebastianZ: these features are implemented in all browsers since 2021, except :has(), which was part of interop 2023<br>
&lt;florian> SebastianZ: tests are at 95% interop<br>
&lt;florian> SebastianZ: there are some issues on github, but given high interop, should be safe to add<br>
&lt;florian> astearns: are there tests for selector lists in :not()<br>
&lt;florian> SebastianZ: I don't know about the tests, but I have used the feature, and it works<br>
&lt;florian> SebastianZ: yes, there are actually tests<br>
&lt;florian> SebastianZ: and they're all passing<br>
&lt;florian> RESOLVED: add :is(), :where(), and :has() to the safe to release<br>
&lt;florian> astearns: anything else in that spec?<br>
&lt;florian> SebastianZ: [lists many features]<br>
&lt;florian> SebastianZ: focus-within should probably go there too<br>
&lt;florian> q+<br>
&lt;dbaron> the column selector stuff is also in selectors 4<br>
&lt;florian> RESOLVED: selector list in :not() are also safe to release<br>
&lt;astearns> ack florian<br>
&lt;florian> florian: focus-within should be good too<br>
&lt;florian> astearns: let's do a new issue for that<br>
&lt;RRSAgent> I have made the request to generate https://www.w3.org/2025/09/12-css-minutes.html fantasai<br>
&lt;florian> ACTION SebastianZ to go through selectors-4 and check for additional safe-to-release features<br>
&lt;florian> ACTION: SebastianZ to go through selectors-4 and check for additional safe-to-release features<br>
</details>


-- 
GitHub Notification of comment by css-meeting-bot
Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/12775#issuecomment-3286030735 using your GitHub account


-- 
Sent via github-notify-ml as configured in https://github.com/w3c/github-notify-ml-config

Received on Friday, 12 September 2025 16:44:27 UTC