I believe cordite is saying that Atom's syntax highlighting fails when your code contains a huge regular expression. I don't believe cordite is claiming that A

I believe cordite is saying that Atom's syntax highlighting fails when your code contains a huge regular expression. I don't believe cordite is claiming that Atom's syntax highlighting fails because it uses regular expressions internally. (I don't know if Atom's syntax highlighting even works that way, FYI. Though I would guess that it does.)