linux-kernel - Re: How can I download a git commit as a diff patch?

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Message-ID: <20090930210745.GC22159@csclub.uwaterloo.ca>
Date:	Wed, 30 Sep 2009 17:07:46 -0400
From:	lsorense@...lub.uwaterloo.ca (Lennart Sorensen)
To:	Jakub Narebski <jnareb@...il.com>
Cc:	Alejandro Riveira Fernández <ariveira@...il.com>,
	Randy Dunlap <rdunlap@...otime.net>,
	Andy <genanr@...phone.com>, linux-kernel@...r.kernel.org,
	git@...r.kernel.org
Subject: Re: How can I download a git commit as a diff patch?

On Wed, Sep 30, 2009 at 10:40:16PM +0200, Jakub Narebski wrote:
> You can specify parent explicitely: "git diff <rev>^1 <rev>" for diff
> to first parent, e.g. "git diff HEAD^ HEAD".
> 
> Just so you know that this single diff is not enough to redo a merge.
> It is only partial information.

Yes certainly in some cases.  Often you can pick specific patches and
a few patches they depend on to try and fix something, but for bigger
changes it doesn't work.  I am actually surprised it has been this long
before I ever saw one of these combined diff's.  I must have been lucky
so far.

> BTW. there is also "git diff-tree -m <rev>") to show diff to *all*
> parents at once:
> 
>     -m    By default, `git-diff-tree --stdin` does not show differences for
>           merge commits. With this flag, it shows differences to that commit
>           from all of its parents. See also `-c`.

I will have to try that one out.

-- 
Len Sorensen
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