prevent SyntaxWarning on character escapes

[afeistel]

most fixes involve r- (raw) strings, but one had to use \\ because it also contained a proper escape, \n, and doing r"..." "\n" felt like too much of a hack

r"..." is picked over \\ for consistency with the convention of using r"..." with re

[afeistel]

(I went through this before #93, trying to work on #92)

[HuyaneMatsu]

Raw strings are a trap if you think about it.

Example: rf / fr string prefix makes no sense. You can see here that even tho escapes are ignored, { is still preserved for f strings, and requires to you use { to escape {. The point of raw strings would be that you should not be required to do this. 🤦🏻

In [0]: print(r'hello\n\n\t\t\\')
hello\n\n\t\t\\
In [1]: print(rf'hello\n\n\t\t\\{}')
  File "<console in[1]>", line 1
    print(rf'hello\n\n\t\t\\{}')
          ^
SyntaxError: f-string: empty expression not allowed
In [2]: print(rf'hello\n\n\t\t\\{{}}')
hello\n\n\t\t\\{}

Please use \\ instead :)

[afeistel]

changed non-re cases to \\

[HuyaneMatsu]

I do not wanna merge the PR and then remove the r strings after. I think it would not make you feel good.
But you already put in the work and me just fixing the same stuff would also not make you feel good.

I just really do not wanna see any r strings.

[HuyaneMatsu]

Thanks for your contribution. And I am sorry because the administration took way longer than the actual fix.