How to retain commit gpg-signature after interactive rebase squashing?

Question

When I want to squash some commits by interactive rebase:

git rebase -i HEAD~3

And then:

pick cbd03e3 Final co         


        

Answer 1

Like Cupcake stated, you can't retain the old signature from the unsquashed commits, but you can sign the new squashed commit if you rebase like this:

git rebase --interactive --gpg-sign=myemail@example.com HEAD~4

Adding --gpg-sign=myemail@example.com as an argument will sign the final squashed commit.