t / t5100 / info0011on commit git-send-email.perl: make initial In-Reply-To apply only to first email (db54c8e)
   1Author: A U Thor
   2Email: a.u.thor@example.com
   3Subject: Xyzzy
   4Date: Fri, 8 Aug 2008 13:08:37 +0200 (CEST)
   5