Re: how to undo a git merge?

From: ff <ff@member.org>
Date: Jul 11, 2008, 18:46 UTC
Message-ID: <fa7d16350807111146m18b0ca9q6902c2167bfd3512@mail.gmail.com>
In-Reply-To: <20080711181413.GI10347@genesis.frugalware.org>

> [ Did you reply off-list intentionally? ]

ooops... yes... I'm scared of the reply-all button. :)

> For example, if you were on branch 'master' and you merged 'foo' to
> master using 'git merge foo', and you want to revert that merge then you
> need '-m 1'.

Ok, so... sorry for not getting it completely, even after reading the info.

In your example, how and why you can determine that the number 1 represents the "foo" branch? Would "-m 2" represent the master branch? In your example is there any other choice for the "-m" number to use?

-- ff

On Fri, Jul 11, 2008 at 2:14 PM, Miklos Vajna <vmiklos@frugalware.org> wrote:

Show 21 quoted lines

> [ Did you reply off-list intentionally? ]
>
> On Fri, Jul 11, 2008 at 02:07:44PM -0400, ff <ff@member.org> wrote:
>> thank you.
>>
>> I did see the -m option in the revert man page. It talks about
>> "parent" and I did
>> not understand what that is. Is parent the commit id of the merge commit?
>>
>> Thanks again!
>
> http://www.kernel.org/pub/software/scm/git/docs/gitglossary.html#def_parent
>
> A merge commit has two parents, but obviously only one of the was the
> HEAD commit before the merge. So when you revert a merge, you need to
> specify which which parent's tree should be the tree of the new HEAD.
>
> For example, if you were on branch 'master' and you merged 'foo' to
> master using 'git merge foo', and you want to revert that merge then you
> need '-m 1'.
>