Detail on the DCO signoff feature

[melodie11]

Hello, I have setup DCO on a repos I started recently, on Github web and in my local repos. I am running a Linux environment and added the signoff setup in my local repository. Therefore the .git/config file does contain the line:

[format]
	signOff = true

Therefore, shouldn't my local git perform the signoff automatically each time I do a commit? Because it does not seem to be the case.
I use git command lines, maybe I should use gh command lines?

Thanks for providing me some insight.

[smudge011]

The Git config setting signOff = true under [format] doesn’t automatically append --signoff to commits—you still need to manually use git commit -s each time. Want help automating that?

[melodie11]

In the meantime, I asked why to… an AI. It told me that having it in the config file is meant for a nice formatting, while having to add it manually at each commit would be meant for a conscious act of signing from the committer.
So you are telling me that it is in fact possible to automate it? How complex would it be?

[ghostinhershell]

Hey @smudge011, just wanted to give a nudge here since @melodie11 had a follow-up to your answer.

[ghostinhershell]

Hey @melodie11 👋🏾

While you wait for clarification from @smudge011, here are some resources that may be helpful to you as well:

• Signing commits
• Automatically sign your commits from GitHub Actions, using the REST API

Cheers!

[melodie11]

Thank you @ghostinhershell it was about DCO, not GPG. Someone has provided me with a solution, using a .mailmap file installed at the root of the repository.
It is used with one line per adress/name to map:
< Name and mail adress to use > <name and mail adress to replace>

(as many lines as needed). This has solved my problem.

[ghostinhershell]

Love that, thanks so much for confirming!!! 🚀