shortlog: Document and test --format option
authorJonathan Nieder <jrnieder@gmail.com>
Tue, 4 May 2010 02:59:55 +0000 (21:59 -0500)
committerJunio C Hamano <gitster@pobox.com>
Tue, 4 May 2010 22:30:59 +0000 (15:30 -0700)
Do not document the --pretty synonym, since it takes too long to
explain the name to people.

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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