[csswg-drafts] Pull Request: [selectors-4] Add :defined pseudo-class

zcorpan has just labeled a pull request from spectranaut for https://github.com/w3c/csswg-drafts as "Needs Edits":

== [selectors-4] Add :defined pseudo-class ==
[selectors-4] Add the `:defined` pseudo-class as discussed in #2258. 

The original definition has been moved verbatim from the html spec and a note and examples added. PR to remove the [definition from the html spec from WHATWG](https://github.com/whatwg/html/pull/4433).

A test for this definition has previously been submitted: https://github.com/ewilligers/web-platform-tests/commit/92a561a3121a1831214a7b9f47931904ae3df5e7

Worked on with @zcorpan and @isaacdurazo.

See https://github.com/w3c/csswg-drafts/pull/3735

Received on Wednesday, 20 March 2019 23:15:13 UTC