On 4/15/24 01:55, fantasai wrote:
Speaking for myself only (not as Apple/WebKit), as an individual co-editor of
this spec--and from the perspective of having edited many layout specs
including Grid and Flexbox--I think Anchor Positioning is not quite ready to
ship (though I think it's pretty close).
The spec just went through a significant overhaul, with major changes to
syntax, behavior, and interactions among various features. Typically after
such changes, a spec needs some time to settle, and also another round of
review to flush out additional issues and refine the new design. This is
particularly true for layout specs due to their complexity--both the inherent
complexity of the feature (we want to ensure it's fully coherent, even after
all the changes), as well as the complexity of how it gets used (we want to
ensure good usability for the various use cases).
Here's a list of issues with breaking impact, as I warned was likely once the
overhauled spec actually got a thorough review:
- shorthanding relationship of 'position' and 'position-anchor'
https://github.com/w3c/csswg-drafts/issues/10321
- position: inset-area() syntax does not reflect CSSWG resolution
https://github.com/w3c/csswg-drafts/issues/10320
- revert-layer behavior is wrongly specified
https://github.com/w3c/csswg-drafts/issues/10319
- anchor-center alignment should not affect sizing
https://github.com/w3c/csswg-drafts/issues/10315
- resolution of 'inset' percentages for multi-track 'inset-area'
https://github.com/w3c/csswg-drafts/issues/10314
- default alignments for inset areas are wrong
https://github.com/w3c/csswg-drafts/issues/10313
- initial value of 'position-anchor' should be 'auto' not 'implicit'
Like I said, you can't redesign a spec and expect not to have follow-up
issues. The revised spec was published on the 26th of March; you didn't leave
*any* time for review before deciding to ship.
~fantasai
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