Re: Howto get the merge-base ?

[Junio C Hamano <junkio@cox.net>]

"Bertrand Jacquin" <beber.mailing@gmail.com> writes:

> 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.

It is mysterious to me because you did not say what you gave as
arguments ;-).

If I am reading you correctly, you already have a "Merge"
commit, made by you or somebody else, and are trying to figure
out where the merge base was.  If that is the case:

	git-merge-base Merge^1 Merge^2

in other words

	git-merge-base CommitB CommitD        

is what you are looking for?

But what do you need that information for?  To reproduce
somebody else's merge?