I can't see selectors-4 on any of the popular accounts on github to raise issues there.
However there are a lot of unanswered questions on the specification and I just wondered where the best place to discuss them is (Obviously I'm aware of the mailing list however sometimes it doesn't seem the best place until the idea actually has more weight than "I think it should have this syntax", "Yeah, well I like this syntax").
Issue 11 was the one I was currently interested in:
It seems that
:blank may be a little ambiguous however is more specific than
:-moz-whitespace-only which implies the element can't be empty.
The best I could think of would be add
:space which would match only elements with spaces in them, then to get
:blank functionality you could use:
I considered something off the wall like
:trim where most languages would see whitespace or not as acceptable, however I think it is more confusing than
I also considered
:collapsable but again confusing.
I guess the prefix should match whatever gets settled for
white-space-collapse, unless this has been removed completely.
There is some bikeshedding for you all, I know how much you all like it hah.