[BUG] git-log shows first parent and repeated last for octopus merge

[Jakub Narebski <jnareb@gmail.com>]

When trying to find how many merges and how many octopus merges (merges with
more than two parents) are in git.git repository I have encountered the
following strange output of git-log:

 1000:jnareb@roke:~/git> git log --parents --full-history --max-count=1 \
   211232bae64bcc60bbf5d1b5e5b2344c22ed767e -- a//b
 commit 211232bae64bcc60bbf5d1b5e5b2344c22ed767e <last parent repeated>
 Merge: d0d0d0b... d0d0d0b... d0d0d0b... d0d0d0b... d0d0d0b...
 [...]

while git-show gives correct output

 1005:jnareb@roke:~/git> git show 211232bae64bcc60bbf5d1b5e5b2344c22ed767e
 commit 211232bae64bcc60bbf5d1b5e5b2344c22ed767e
 Merge: fc54a9c... 9e30dd7... c4b83e6... 6602659... b28858b...
 [...]

Same with git-rev-list, also shows correct output:

 1005:jnareb@roke:~/git> git rev-list --header --parents --max-count=1 \
   211232bae64bcc60bbf5d1b5e5b2344c22ed767e
 211232bae64bcc60bbf5d1b5e5b2344c22ed767e [...] 
 tree cdafa88fa4ed7fcc7bb6c64d62e2d7c4d3b65e42
 parent fc54a9c30ccad3fde5890d2c0ca2e2acc0848fbc
 parent 9e30dd7c0ecc9f10372f31539d0122db97418353
 parent c4b83e618f1df7d8ecc9392fa40e5bebccbe6b5a
 parent 660265909fc178581ef327076716dfd3550e6e7b
 parent b28858bf65d4fd6d8bb070865518ec43817fe7f3
 [...]

1008:jnareb@roke:~/git> git --version
git version 1.4.2.1
-- 
Jakub Narebski
Warsaw, Poland
ShadeHawk on #git