Re: [csswg-drafts] [css-properties-values-api] Interpolations for registered properties <transform-list>/<transform-function>/none (#9522)

Agreed that value `none` should be animated discretely for syntaxes `none|<transform-list>` or `none|<transform-function>`, but I think `none` should be interpolated for syntaxes `<transform-list>|none` or `<transform-function>|none`.

From css-properties-values-api <[https://github.com/w3c/css-houdini-drafts/blob/808c87a30bea/css-properties-values-api/Overview.bs#L306-L308](https://github.com/w3c/css-houdini-drafts/blob/808c87a30bea/css-properties-values-api/Overview.bs#L306-L308)>:

> For syntaxes specified with the | combinator, the computed value is given by applying the computed-value rules for the first clause that matches the value.

If so, the expectations for WPT <[https://github.com/web-platform-tests/wpt/blob/1a18de6ee35d/css/css-properties-values-api/animation/custom-property-animation-transform-none.tentative.html](https://github.com/web-platform-tests/wpt/blob/1a18de6ee35d/css/css-properties-values-api/animation/custom-property-animation-transform-none.tentative.html)> should be updated, and testcases added for syntaxes `none|<transform-list>` and `none|<transform-function>`.

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Received on Thursday, 7 March 2024 07:56:30 UTC