I noticed that `-webkit-fill-available` has been enabled in Firefox 145[1], 
but it seems a bug 1920634 [2] has been overlooked. Is there still time to 
fix it in 145?


[1]: https://bugzilla.mozilla.org/show_bug.cgi?id=1988938

[2]: https://bugzilla.mozilla.org/show_bug.cgi?id=1920634

在2025年9月18日星期四 UTC+8 00:36:20<[email protected]> 写道:

> As of today (2025-09-17), I intend to turn on support for the CSS 
> '-webkit-fill-available' sizing keyword, specifically in the 'height' and 
> 'width' properties. (Support for the keyword in other properties will ship 
> soon but separately, per note at the bottom of this message.)
>
> It has been developed behind the '
> layout.css.webkit-fill-available.enabled' preference. Other 
> WebKit/Blink-based browsers have already been shipping this legacy prefixed 
> keyword for over a decade.
>
> *Bug to turn on by default:* 
> https://bugzilla.mozilla.org/show_bug.cgi?id=1988938
>
> *Standard:* https://drafts.csswg.org/css-sizing-4/#stretch-fit-sizing
>
> (Note on the standard/spec: this webkit-prefixed keyword is a legacy alias 
> for what is now standardized as 'stretch' in that spec.  Gecko and WebKit 
> have not yet shipped that standardized 'stretch' keyword, but there's 
> strong webcompat dependence on this legacy webkit-prefixed keyword keyword, 
> particularly in the 'width' and 'height' properties - hence the need to 
> ship that version as soon as possible.)
> *This feature was previously discussed in this "Intent to prototype" 
> thread:*
>
> https://groups.google.com/a/mozilla.org/g/dev-platform/c/-pMSV-kgUjA/m/VRL09R1NAAAJ
>
> Note: In the coming weeks, I also intend to enable support for this 
> prefixed keyword in *other* properties (beyond 'height' and 'width') as 
> well - that support is guarded by the 
> "layout.css.webkit-fill-available.all-size-properties.enabled" preference 
> (added in https://bugzilla.mozilla.org/show_bug.cgi?id=1988301 ).  And I 
> intend to enable support for the standardized keyword name ('stretch') by 
> the end of the year.  I'll send separate intent-to-ship messages for those 
> changes.
>

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