I was going through pseudo-classes for bug 1350140, and leaving comments with the missing ones, when I saw the :-moz-bound-element pseudo-class. This is somewhat tricky to implement in Stylo (doable still, I guess), but it seems completely unused, both in mozilla-central and in the addons code. We should consider removing support for it.

Not sure if I should ask for review... Should I send an intent-to-unship or something?

Since this is something exposed to web content, we probably should have an intend to unship.

Comment on attachment 8850793 [details] [diff] [review] patch I posted https://groups.google.com/forum/#!topic/mozilla.dev.platform/1iUnJuxB1Ak

So this was added in bug 71261 (quite old, hmmm) Given it is not used anywhere, I think it's okay to remove.

Pushed by ecoal95@gmail.com: https://hg.mozilla.org/integration/mozilla-inbound/rev/1a2765fbc74e Remove -moz-bound-element pseudo-class. r=xidorn

I'd like to document it's removal at https://developer.mozilla.org/en-US/docs/Web/CSS/:-moz-bound-element, though first need to create that page. Jean-Yves, do you believe it's worth the effort or should we rather remove references to it from MDN? Emilio, what was the pseudo-class actually meant for? Sebastian

If it wasn't documented already, it seems better to just leave it undocumented.

Right, I agree with David. I haven't seen any reference in MDN apart from the one at https://developer.mozilla.org/en-US/docs/Web/CSS/Mozilla_Extensions#Pseudo-elements_and_pseudo-classes.

Ok, I've removed it from the reference page. Sebastian

For completeness I've mentioned its removal in the 55 developer release notes: https://developer.mozilla.org/en-US/Firefox/Releases/55#CSS Sebastian