Re: [csswg-drafts] [selectors-4] Add :defined pseudo-class (#3735)

@bkardell this says it's up to the host language to say what matches `:defined`. For HTML this is https://html.spec.whatwg.org/multipage/semantics-other.html#selector-defined - that could be changed in HTML, and SVG could say something else, without needing updates to the Selectors spec.

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Received on Monday, 10 February 2020 17:44:44 UTC