flex-basis should not accept `stretch` or `-webkit-fill-available`
Categories
(Core :: CSS Parsing and Computation, defect)
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(Reporter: dholbert, Unassigned)
References
(Blocks 2 open bugs)
Details
@yisibl observed in github that (when the property is preffed on) Firefox currently accepts flex-basis: -webkit-fill-available (and similarly flex-basis: stretch if that's preffed on.
https://drafts.csswg.org/css-sizing-4/#sizing-values has a list of properties that should accept stretch, and indeed flex-basis is not there in the list. So we should adjust the parsing code to reject it.
While we're at it, flex-basis should probably reject -moz-available as well, since (to the extent that it will live on at all) we'd like that keyword to essentially be an alias for the standards-based stretch, ideally.
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Reporter | |
Comment 1•1 year ago
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Actually wait, the grammar for flex-basis is specced such that it accepts anything that width accepts (plus an additional keyword):
https://drafts.csswg.org/css-flexbox-1/#flex-basis-property
flex-basis
Value: content | <'width'>
So these values should in fact be supported by flex-basis after all (and perhaps the spec should list flex-basis to make that clear).
(flex-basis:stretch does seem a bit odd, but I suppose it's just another more-foolproof way of doing flex-basis:100% which is a perfectly reasonable thing to do.)
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