update: due to a few bugs, we've gone back to disabling this feature by-default on 145 (currently in beta). It's now planned to ship enabled-by-default starting in 146 (which is the current Nightly version).
(more details in https://bugzilla.mozilla.org/show_bug.cgi?id=1988938#c17 and surrounding comments.) On Sat, Oct 11, 2025 at 6:49 AM Daniel Holbert <[email protected]> wrote: > I do intend to fix that, but I I'm not holding up shipping on that issue, > given that Chrome/WebKit have been shipping with differing behavior on that > since forever (and given that this is a legacy prefixed keyword). > > > On Sat, Oct 11, 2025, 12:39 AM 一丝 <[email protected]> wrote: > >> 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. >>> >> -- You received this message because you are subscribed to the Google Groups "[email protected]" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/a/mozilla.org/d/msgid/dev-platform/CAN_rCT%3DT343gRDjX2UG5wTcGVAJGte1_eWYGXSrLtoci_1TtNg%40mail.gmail.com.
