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From: Sam Vilain <sam@vilain•net>
To: Lars Hjemli <hjemli@gmail•com>
Cc: Junio C Hamano <gitster@pobox•com>,
	Eric Wong <normalperson@yhbt•net>, Andreas Ericsson <ae@op5•se>,
	Johannes Schindelin <Johannes.Schindelin@gmx•de>,
	Chris Shoemaker <c.shoemaker@cox•net>,
	git@vger•kernel.org
Subject: Re: [PATCH] git-merge: add option --no-ff
Date: Wed, 19 Sep 2007 01:22:00 +1200	[thread overview]
Message-ID: <46EFD0F8.5050603@vilain.net> (raw)
In-Reply-To: <8c5c35580709180503g24ef6c5hda2877e2215ba58d@mail.gmail.com>

Lars Hjemli wrote:
> [...sorry for making this such a long thread...]
>
> On 9/18/07, Sam Vilain <sam@vilain•net> wrote:
>   
>> Lars Hjemli wrote:
>>     
>>> On 9/18/07, Sam Vilain <sam@vilain•net> wrote:
>>>
>>>       
>>>> I think that writing a real fast-forward merge should only happen on
>>>> dcommit, not git merge, because that is what is required for SVN.
>>>>
>>>>         
>>> I don't think git-svn has any way of knowing that the user wanted a
>>> merge, unless a merge commit is present. So the user would have to
>>> specify the set of commits which should be considered a merge during
>>> dcommit (this would actually resemble how merges are performed in
>>> subversion).
>>>
>>>       
>> Sure it can.  If you're committing to branch X, and the current tree has
>> a whole lot of commits above that, then it should do the only thing you
>> can do with SVN.
>>
>> Which is write a squash commit, and set the "svn:merge" and/or
>> "svk:merge" properties to represent what happened.
>>     
>
> I often have prepared a series of local commits which I _want_ to
> preserve as different subversion revisions.
>   

But for the scenario we are discussing the revisions already exist
upstream otherwise there would be no fast forward merge.  So, if you
want that behaviour you can use cherry-pick on the git side and the
correct behaviour for git-svn is to write svn merge properties.

> Also, doing a --squash means that I loose the merge history in git
> (and then I need to edit the grafts file again)
>   

There is no merge history in git, it was a fast forward.

>>> Sidenote: this might be slightly controversial, but I've sometimes
>>> missed a --no-ff option to 'git merge' when working on plain git
>>> repositories; IMHO preserving the 'logical' merge history when the
>>> merge of a topic branch results in a fast-forward can be interesting.
>>>       
>> If you really want one, use git commit-tree directly.
>>     
> Yeah, that's an option, but --no-ff is somewhat less work ;-)
>   

Sure.  I just don't see a good use case for it from this yet.

Sam.

  reply	other threads:[~2007-09-18 13:21 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-09-17 12:17 [PATCH] git-merge: add option --no-ff Lars Hjemli
2007-09-17 12:39 ` Andreas Ericsson
2007-09-17 13:16   ` Lars Hjemli
2007-09-17 13:23     ` Johannes Schindelin
2007-09-17 13:37       ` Chris Shoemaker
2007-09-17 13:40         ` Lars Hjemli
2007-09-17 13:52         ` Johannes Schindelin
2007-09-17 13:38       ` Lars Hjemli
2007-09-17 13:57         ` Johannes Schindelin
2007-09-17 14:12           ` Lars Hjemli
2007-09-17 15:05             ` Johannes Schindelin
2007-09-17 15:17               ` Lars Hjemli
2007-09-17 16:23                 ` Lars Hjemli
2007-09-18  0:50                   ` Eric Wong
2007-09-18  1:09                     ` Junio C Hamano
2007-09-18  1:39                       ` Eric Wong
2007-09-18  6:12                     ` Lars Hjemli
2007-09-18  6:23                       ` Eric Wong
2007-09-18  6:53                       ` Junio C Hamano
2007-09-18  7:30                         ` Sam Vilain
2007-09-18  9:12                           ` Sam Vilain
2007-09-18 11:19                             ` Lars Hjemli
2007-09-18 11:50                               ` Sam Vilain
2007-09-18 12:03                                 ` Lars Hjemli
2007-09-18 13:22                                   ` Sam Vilain [this message]
2007-09-18 14:01                                     ` Lars Hjemli
2007-09-18 14:34                                       ` Sam Vilain
2007-09-18 12:29                               ` Johannes Schindelin
2007-09-18 12:38                                 ` Lars Hjemli
2007-09-18  8:02                         ` Lars Hjemli
2007-09-18 22:51                   ` Peter Baumann
2007-09-19  7:09                     ` Lars Hjemli
2007-09-17 16:07             ` Chris Shoemaker
2007-09-17 16:14               ` Lars Hjemli

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