See last test at http://www.richinstyle.com/test/keyconcepts/comments2.html
Basically, we treat the selector ":lang/* */(fr)" as identical to ":lang(fr)".
Created attachment 138880 [details] [diff] [review]
Comment on attachment 138880 [details] [diff] [review]
r+sr=dbaron if you put a rather verbose comment above the definition of
|isTree| explaining how that interacts with what you just added to allow the
tree pseudo-elements to be optionally functional.
// If a tree pseudo-element is using the function syntax, it will
// get isTree set here and will pass the check below that only
// allows functions if they are in our list of things allowed to be
// functions. If it is _not_ using the function syntax, isTree will
// be false, and it will still pass that check. So the tree
// pseudo-elements are allowed to be either functions or not, as
and checked in.