I was going through 'whatchanged rev-list.c' but was half-way when I sent the previous message. -S'UNINTERESTING|SHOWN' found this one. 51b1e1713b1ed8e962e994cd0850ea439ad8c3de Author: Jon Seymour <jon.seymour@xxxxxxxxx> Date: Mon Jun 20 12:29:38 2005 +1000 [PATCH] Prevent git-rev-list without --merge-order producing dupicates in output If b is reachable from a, then: git-rev-list a b argument would print one of the commits twice. This patch fixes that problem. A previous problem fixed it for the --merge-order switch. Signed-off-by: Jon Seymour <jon.seymour@xxxxxxxxx> Signed-off-by: Linus Torvalds <torvalds@xxxxxxxx> - : send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html