Re: [csswg-drafts] [css-2025][css-pseudo-4] Add `::marker` to Safe to Release Exceptions (#12816)

> > implemented in all major browsers since 2020
> 
> WebKit doesn't support `content` nor a bunch of properties that are supposed to work: https://bugs.webkit.org/show_bug.cgi?id=204163

Interestingly, according to https://wpt.fyi/results/css/css-pseudo/parsing/marker-supported-properties.html?label=experimental&aligned&q=marker WebKit supports parsing `content` while Gecko fails a lot of those tests.

Anyway, I already wondered whether I should add a note about that but then thought it's obvious from the WPTs. Though given the numbers don't fully reflect the support, I've now added a short note. Thanks for the hint!

> Also the wpt link is wrong, tests are in:
> 
>     * https://wpt.fyi/results/css/css-pseudo?q=marker
> 
>     * https://wpt.fyi/results/css/css-lists?q=marker

Copy & paste error. Fixed that and added the list ones.

> Also see some open issues against css-lists (not all are about the pseudo-element):
> 
>     * https://github.com/w3c/csswg-drafts/issues?q=is%3Aissue%20state%3Aopen%20label%3Acss-lists-3%20%22%3Amarker%22%20in%3Atitle

I've added the css-pseudo-4 tag to all that seemed related to the pseudo-element and added the URL to the description and updated the issue count. Again, thanks for the hint!

Sebastian

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Received on Wednesday, 17 September 2025 08:59:39 UTC