Enable filtering files based on pattern when using prek manually

[martis42]

First of all, thank you very much for starting this project 💚

I really liked that you introduced the --directory option. I was missing this always in pre-commit.

It would be an awesome addition, if we could also get a --file-filters (or whatever name suits you) option allowing us to provide patterns and prek will then only check files matching the patterns.

Example use cases I think of are

• I want to check all .foo files in the workspace
• I want to test all files below ../test/.. directories

I know one can achieve this by using --files and combining this with git ls-files. However, I believe this is needlessly clunky for something which I consider a standard use case.

Assuming you are open for the request at all, I see the following design decisions for this new option:

• Does this new option have to be used mutually exclusive with respect to --all-files and --directory? Or is it allowed to use --all-files or --directory and then on top apply further file filters.
• Should the option expect glob or regex patterns

No strong opinion on those. Although, If I could freely choose, I guess being able to combine --directoy with filters would be nice as this would allow simpler patterns in some cases. Also regex seems like the most powerful choice for writing file patterns.

[j178]

Thank you for the suggestion! I’ll think about the user needs and interface design.

[rummsi1337]

I would also be very interested in this feature 👍

[BayerC]

This feature would be awesome!
+1

[martis42]

Thank you for implementing this 😁