Comma separated CSS selectors are exploded with commas

Hi!

From version 2.3.0, any combined CSS selectors (with coma) are quite destroyed :p Input CSS:

.entity-enter-to,
.entity-leave {
  opacity: 1;
}

Ponyfill’s output CSS copied from IE11 DOM:

.,e,n,t,i,t,y,-,e,n,t,e,r,-,t,o,,,
,.,e,n,t,i,t,y,-,l,e,a,v,e{opacity:1;}

If you have no idea where it comes from I can try to find more infos. (single selectors are fine)

[jhildenbiddle]

Sounds good. Appreciate the effort, @rndmerle.

If for some reason you decide to dive back in and there is something I can do to help, give me a shout. I’ll close this issue for now, but I’m happy to reopen if/when necessary.

[rndmerle]

Apparently the IE11 support on Glitch is not yet available. Anyway, I spent some more hours trying to set-up a minimal reproduction repo but it’s even more complicated and inextricable than I thought.

I actually gave up 😦 The farthest I could go was to find it was related to es.string.split not being polyfilled while es.regexp.exec was. But it’s more complicated it seems.

Considering the fact that I’ve an easy workaround, that it seems nobody else has this issue, and that even if I could coin the real cause it would still take hours to fix, I think it’s not reasonable to spend more time on this.