[TxMt] Re: Python bundle syntax highlighting bug

[Alexander Ross]

> 6. Parse r' and r''' but not r" and r""" (or vice-versa) as regexes.
>
> 7. Parse the "r" prefix, but not the "R" prefix, as regexes.
>
> The last option is probably the simplest. I don't think I've ever
> seen the "R" prefix in use and didn't even know it was an option
> until I just read the spec moments ago.

I've never seen 'R' in use either, but I'm sure somebody, somewhere is
doing it.  I think 6,7 are going to be too confusing.