Black does not print errors with --quiet --check about black HOT 2 OPEN

I think this behavior is actually correct. The errors that are still printed are ones where Black itself runs into an error (i.e., it fails to format some file). But if some file needs reformatting, that's a perfectly normal part of the behavior of --check. I can easily imagine users running something like black --quiet --check || echo "Some custom message".

from black.

I must be missing something: I do not want to print a custom message. I'd just like the same behaviour as the vast majority of analysis tools:

• Do not print anything on success (Black is not the only tool running during static checking, irrelevant output is distracting).
• Print what went wrong on failure.

With --check alone, you still get output on success. With --check --quiet you do not see what went wrong on failure.

If you prefer current options to keep the same behaviour, maybe adding a new flag would do the job? For example Curl has a similar behaviour where --silent hides errors; but one can add --show-error to still print errors and keeping other non-error messages silent.

Would adding --show-error (or --show-errors, --print-errors, I don't mind) be acceptable?

from black.