__get_long_cur removes backslashes

[austinseraphin]

Bash Completion

I noticed that tab completion of filenames stopped working. I fixed the problem by hadding a text substitution to remove backslashes in __get_long_cur. It works, but I still notice an issue with using quoted strings, as opposed to escaped strings. I don't know the code, but wanted to solve the problem well enough for my own use at the moment.

[MaxKellermann]

Fixed commit message and removed trailing space 1950550c248025b8c0a06d91a02922022d2d19a2