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Date:   Sun, 24 Oct 2021 23:14:22 +0200
From:   Marco Beck <mbeck@eaddrinuse.net>
To:     git@vger.kernel.org
Subject: Re: [PATCH] gpg-interface: allow selecting key id with env variable
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On Sun, Oct 24, 2021 at 01:35:04PM -0700, Junio C Hamano wrote:

>Can you explain why we want to add another way to specify the key?

Motivation for that patch was that I usually use the same .gitconfig
(all dotfiles actually) with multiple identities (e.g. company and private
email address). It's really convenient to switch to a different identity
for the rest of the session by just setting e.g. $GIT_AUTHOR_EMAIL and not
needing to remember adding --author to every invocation of git-commit(1)
etc. Thought it would be nice to have that convenience for selecting a
signing key as well.