Introduce automatic splitting of long lines

[pseewald]

It's a useful feature and should not be too hard to implement

[giovannipizzi]

Hi, at the moment even if the splitting is not done automatically, I would like to stop as an error if the line is too long, and switching this on with a command-line switch. The reason is that I'm using

By looking at the code, the way I would do it is to have a flag that converts WARNING level logs to errors and stop. What do you think? (Another option: if there is any output from the code, then stop) Or is there an easy way to say to pre-commit "if there is output in stderr, please stop"?

[pseewald]

I'd prefer to not introduce such a flag and to stop only for failures. It is not a problem for fprettify to handle long lines. As long as the input code is standard conforming, fprettify should not stop with an error. So I leave it up to you to check the warning message (but I don't know how to do that with pre-commit).

[giovannipizzi]

I see your point, but at the moment the indentation is wrong and until this issue is fixed we get a "wrong" output... a person can easily split and run again fprettify.

I understand you don't want to change the code, but would you accept an extension (optional for users) to the pre-commit file in your repo, that wraps fprettify and exits with a non-zero error code if there is any output? Most people wouldn't notice but I could use it.

[giovannipizzi]

Never mind, I think I found a way to do this directly in my repo: https://github.com/giovannipizzi/wannier90/commit/01d1231e64f6d80a51054bc003fd0cac5fb9d98a

[varchasgopalaswamy]

is line splitting going to be implemented? It would be very helpful for legacy code

[pseewald]

I still agree that this should be a feature, unfortunately I won't have time in the near future to implement this.