Error with backslash at end of raw string

[escalonn]

This code is parsed wrongly (line 421):

Any time a raw string (whether introduced with r or R) ends with \, the backslash is treated as though it escapes the following string-ending quotation mark. The rest of the code is then highlighted wrongly: with Neon here, it is italicized and the colors are wrong.

[MattDMo]

This is very much related to #34. Basically, the solution is to switch to the sublime-syntax format, as it really can't be addressed by the regexes in .tmLanguage files.