(Fyi github pull requests automatically update with your branch, no need to make a new PR and branch), could you close your old one?

All right, I'll try and do that

did it

Thanks for the patch!

If I understand the original pull request correctly, the goal here is to allow CSS that has certain escape sequences?

a:before {
  content: "two\nlines";
}

Unfortunately, this patch does not do that. All it does is shuffle around a check that looks for the actual tab/linefeed/newline characters, not their escape sequences.

that was pretty much my intention.... it's a bit fuzzy, but it was something on /r/abcqwerty123's css.

I'm going to close this out. If there ends up being a good way of exempting those escape sequences properly please feel free to open another pull request.