Re: [csswg-drafts] [css-conditional] testing support of properties and values with partial implementations (#3559)

This also comes up all the time when dealing with properties from SVG that are crossing over into CSS box layout & vice versa.  For things like `filter` we have had browsers that support one syntax for SVG elements only, and a different syntax for everything except SVG elements, and both syntaxes would pass an `@supports` test.

(Aside: I really wish the spec for `gap` had strongly encouraged browsers not to support the generic property name until they implemented support for the generic feature. I was rather disappointed when browsers rushed to ship the easy parser implementation of the synonym before addressing their layout code, for this reason. But the broader issue still remains.)

-- 
GitHub Notification of comment by AmeliaBR
Please view or discuss this issue at https://github.com/w3c/csswg-drafts/issues/3559#issuecomment-457840974 using your GitHub account

Received on Saturday, 26 January 2019 15:41:48 UTC