Add rst backticks rule to pygrep-hooks

[martinabeleda]

Implements RST Backticks rule from #980

[charliermarsh]

Thanks for this! Is this rule intended to be run on Python code? (Have you used it in practice?) It looks like it's maybe intended to be run on RST directly?

[charliermarsh]

E.g., I'm not sure that the positive-errors in PGH005_1.py are actually picked up by pre-commit, since the pre-commit regex seems to ignore any lines that start with four spaces.

[martinabeleda]

Thanks for this! Is this rule intended to be run on Python code? (Have you used it in practice?) It looks like it's maybe intended to be run on RST directly?

Thanks for looking @charliermarsh yeah I was confused about this but raised the PR to get another set of eyes on it. I think you are right that it's not intended to work on indented comments (it looks to be used for linting PEP rst files).

In that case, does it even make sense to add this rule? I was looking for a good first issue but can close this and find another one to work on

[charliermarsh]

@martinabeleda - Thanks tons for getting involved! Yeah, I think this rule probably doesn't make sense to include. I'm sorry to mislead. I'm gonna go ahead and edit the pygrep issue to remove any RST-specific rules. I wish I'd caught those before!

My top suggestion right now is to take something from the flake8-simplify task. The nice thing is that you can look at the flake8-simplify source for any given rule as a hint on how to implement it. Just comment in the issue if you'd like to work on something there, I'd love your help!