Howto get the merge-base ?

From: Bertrand Jacquin <beber.mailing@gmail.com>
Date: May 14, 2006, 17:21 UTC
Message-ID: <4fb292fa0605141021r20cefaa0he592b9c713ede333@mail.gmail.com>

Hi,

I'm trying to know which commit it the parent of a merge. For exemple if I do that :

   o Merge
  / \
 /   \
 |   |
 |   o Commit D
 |   |
 |   o Commit C
 |   |
 o   | Commit B
 \  /
  \/
  o Commit A
  |
  o Init

How could I know that ``Commit A'' is the merge-base of ``Merge'' ?

I try to get this git-merge-base but result is strange and quiet mysterious as he return me always second args I passed to. I'm using git 1.3.2

-- 
Beber
#e.fr@freenode

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