[PATCH] D47167: Handle --plugin-opt= options as alias options.

[Rui Ueyama via Phabricator via llvm-commits]

ruiu added a comment.

Sure, I think I can just use `Eq` instead of `J`, but I'd like to do that in a follow-up patch because the options without `=` are not handled now.


https://reviews.llvm.org/D47167