If the configuration of the user has "diff.color = true", the
output from "log" we invoke internally added color codes, which
broke the parser.
Signed-off-by: Junio C Hamano <gitster@pobox.com> Tested-by: Johannes Schindelin <Johannes.Schindelin@gmx.de> Acked-by: Eric Wong <normalperson@yhbt.net>