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From:   Alex <agrambot@gmail.com>
To:     git@vger.kernel.org
Subject: Request: Extra case for %G? format
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Date:   Sun, 25 Sep 2016 00:05:46 -0600
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Hello all,

Could the %G? format differentiate between an unsigned commit and a
signed commit that you're missing a public key for?

If `git show --format=%GG --no-patch <commit>' produces an output like
the following:

gpg: Signature made <date> using RSA key ID <id>
gpg: Can't check signature: public key not found

Then currently %G? results in `N', the same as an unsigned commit.

In this case, could %G? please result in a new character? Perhaps `M'
for "missing public key"?