t / t4013 / diff.whatchanged_-SF_masteron commit log: parse separate options like git log --grep foo (7d7b86f)
   1$ git whatchanged -SF master
   2commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
   3Author: A U Thor <author@example.com>
   4Date:   Mon Jun 26 00:02:00 2006 +0000
   5
   6    Third
   7
   8:100644 100644 8422d40... cead32e... M  dir/sub
   9$