Re: [csswg-drafts] [css-conditional-5] Evaluate IACVT style queries to false (#11143)

Right, they should be false, not unknown. We're testing whether a given property's value *equals* a certain value; if the value we're *testing against* triggers IACVT, then the value *that it is* (which is, by definition, a *valid* value) is clearly not equal to that. This isn't the same as an unrecognized query, which might represent a question that would be true if the UA understood it.

(If the IACVT is due to something being unrecognized, then a more modern UA might understand it and return true, but *this* UA that's currently executing the query doesn't understand it, by definition, so it's not equivalent to any value the UA *does* understand.)

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Received on Saturday, 2 November 2024 00:03:41 UTC