Option to allow `fixup!` and `squash!` in commit messages

Description

It would be nice if cz check didn’t fail for fixup and squash commits, e.g., git commit --fixup <rev> or git commit --squash <rev> if the commit messages are otherwise acceptable. In git worflows that use rebase and --autosquash, the offending commit message portion (squash! or fixup! ) will be removed. This is especially annoying when commitizen is used with pre-commit, because every time you do a squash or fixup commit you have to SKIP=commitizen git commit --fixup ....

Possible Solution

Add a CLI option to cz check for this such as --autosquash or some better name which, if true, prepends the commit message check regex pattern with something like r"((fixup|squash)\!\s)?"

I haven’t thought through all of the use cases, but a CLI option may be preferable to a config setting in e.g., toml because you may want the behavior to be different when you are committing (allow) versus pushing or in your CI pipeline (deny). So having something that can be changed a bit more easily than a config option may be desirable. But I hold this opinion lightly.

[woile]

fine by me as well 👍

[yajo]

I don’t think this is related to git itself. It’s just a matter of allowing fixup commits in the regexp.

For example, having the commit-msg pre-commit hook installed, there should be a way to let this not fail:

> git commit -a --fixup 57a2044f1290cba0ca6530e6e77cd5da243e74b1
commitizen check.........................................................Failed
- hook id: commitizen
- exit code: 14

commit validation: failed!
please enter a commit message in the commitizen format.
commit "": "fixup! feat: allow easy working"
pattern: (build|ci|docs|feat|fix|perf|refactor|style|test|chore|revert|bump)(\(\S+\))?!?:(\s.*)