From: Brendan Maginnis <brendan.maginnis@gmail.com>
Date: Mon, 26 Mar 2018 10:00:01 GMT
Subject: git shortlog --author=Me
Message-ID: <CAEFNKCXYdJpWkLUqMryPjepWtGMkA2BkxcxDnY0aXGE0fd1PGw@mail.gmail.com>

If I have a .mailmap file containing
  Me <brendan.maginnis@gmail.com> brendanator <brendan.maginnis@gmail.com>

And I run
  git log --author=Me
I see all my commits

However if I run
  git shortlog --author=Me
my commits are not shown