Re: [csswg-drafts] [css-2025][css-pseudo-4] Add typographic pseudo-elements to Safe to Release exceptions (#12773)

The CSS Working Group just discussed `[css-2025][css-pseudo-4] Add typographic pseudo-elements to Safe to Release exceptions`.

<details><summary>The full IRC log of that discussion</summary>
&lt;florian> SebastianZ: fantasai mentioned in another issue that we need to resolve on a syntax question<br>
&lt;florian> SebastianZ: the :: syntax has been in all browsers for many years<br>
&lt;florian> ChrisL: css2 had the same thing, but with a single colon<br>
&lt;florian> SebastianZ: so we should resolve that all the typographic pseudo elements, with the :: syntax, are safe to release<br>
&lt;dbaron> https://www.w3.org/TR/selectors-3/#pseudo-elements<br>
&lt;florian> dbaron: are these not in the selectors 3 recommendation<br>
&lt;florian> dbaron: which pseudos?<br>
&lt;florian> dbaron: ::first-line, ::first-letter, ::before, ::after are in selectors-3, ::marker is not<br>
&lt;florian> ChrisL: nor are ::prefix and ::postfix<br>
&lt;florian> SebastianZ: but I think these last two were in css2<br>
&lt;florian> dbaron: no<br>
&lt;florian> astearns: of the typographic pseudos, we're only concerned about ::prefix and ::postfix<br>
&lt;florian> astearns: ::marker is in a different category, tree abiding pseudos<br>
&lt;florian> SebastianZ: the idea was to mark all that were part of css2 as safe to release with the :: colon syntax<br>
&lt;florian> astearns: if they're in selectors 3, we don't need to<br>
&lt;florian> dbaron: the only missing one are ::prefix and ::postfix<br>
&lt;florian> SebastianZ: I don't remember why I added those, probably tested them before<br>
&lt;florian> astearns: we don't seem to have test for those, and edits seem to be pending too<br>
</details>


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Received on Friday, 12 September 2025 16:37:21 UTC