tree 9bdcbc31e0f5d80caaa399b0ec1a5e32444b5d13
parent 47beb37bc60b690e83b19aa7ff646255fb643ad9
author Jeff King <peff@peff.net> 1601196007 -0400
committer Junio C Hamano <gitster@pobox.com> 1601234465 -0700

shortlog: de-duplicate trailer values

The current documentation is vague about what happens with
--group=trailer:signed-off-by when we see a commit with:

  Signed-off-by: One
  Signed-off-by: Two
  Signed-off-by: One

We clearly should credit both "One" and "Two", but should "One" get
credited twice? The current code does so, but mostly because that was
the easiest thing to do. It's probably more useful to count each commit
at most once. This will become especially important when we allow
values from multiple sources in a future patch.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>