Allow specifying options for commit

[towo]

Specifically, since I'm using signed commits in a repo, I would love to be able to also create signed commits with absorb. This can of course be generalized down to "specify options to be used when running commit".

[tummychow]

hm, this is probably worth supporting, but i'd like to know more about the use case here. absorb commits aren't really intended to be published anywhere (they should disappear as part of rebase --autosquash), so whether they're signed shouldn't be super important?

[towo]

Well, for a testing environment where I'm pushing the fixups and see if it works, I wouldn't always want to do absorb, rebase, push but rather just absorb + push. I agree that just doing a rebase is a valid workaround for my use case.