Don't match Tab characters

[cgay]

cgay
I'm tempted to make the highlighter be opinionated about Tab characters, by not recognizing them at all. Opinions? Just allow everything that is legal and leave all style issues to the user?

housel
Can you highlight them in light pink or something?
I have Emacs set to show-trailing-whitespace (but I don't know if there's a way to highlight tabs per se)

cgay
I don't think that's possible because every \\s would need to instead be something that puts sequences of tabs into a group separate from the spaces and we don't know how many such groups there would be in a whitespace sequence. (Styles are assigned to regex groups.)
Oh, well we could highlight any whitespace sequence that contains a tab differently from ones that have only spaces. That would probably be sufficient.

housel
Sounds promising

cgay
I'll add it to the future features list.

[cgay]

This is too much work for too little benefit. I think a reasonable way forward is to change our TextMate grammar to not match Tab (i.e., don't use \\s) and let the use of tab characters break highlighting in general.

I'm thinking to use [\\r\\n ] instead of \\s, and leave out the esoteric characters that are part of \\s.