From mboxrd@z Thu Jan  1 00:00:00 1970
From: Karl Chen <quarl@cs.berkeley.edu>
Subject: git-whatchanged -<n>
Date: Wed, 27 Aug 2008 17:07:36 -0700
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Is this a bug in git-whatchanged, or at least an insufficiently
documented feature?

cd git

git whatchanged 837a156197e7~20..837a156197e7 -1 

    [nothing]

git whatchanged 837a156197e7~20..837a156197e7 -3

    [1 commit]

git whatchanged 837a156197e7~20..837a156197e7 -1 -m

    [1(?) commit]

It appears that without -m, merges are filtered after commits are
counted.