Hi,

I just found that overwriting the GIT_AUTHOR_EMAIL and GIT_AUTHOR_NAME env
variables does alter the author when committing, but does not overwrite the
--signoff entry. Is this intentional?

To reproduce:

    cd /tmp
    mkdir foo
    cd foo
    git init
    touch foo
    git add foo
    GIT_AUTHOR_EMAIL=nobody@nomail.de GIT_AUTHOR_NAME="Someone Else" git commit -s -m test
    git show


I'm tested this for 2.29.3 and 2.29.2.

The manpage (2.29.3) does not say anything related to that under the `--signoff`
entry, nor under the `COMMIT INFORMATION` section!

If this is a bug, I'd love to contribute a patch, if someone can take my hand
and guide me to the right places!

Please keep me in CC, I'm not subscribed.

-- 
Matthias