From mboxrd@z Thu Jan  1 00:00:00 1970
From: Vijay Lakshminarayanan <laksvij@gmail.com>
Subject: Re: Query on git commit amend
Date: Wed, 07 Dec 2011 20:36:03 +0530
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Cc: =?iso-8859-1?Q?Bj=F6rn?= Steinbrink <B.Steinbrink@gmx.de>,
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To: Viresh Kumar <viresh.kumar@st.com>
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In-Reply-To: <4EDEFD66.4020404@st.com> (Viresh Kumar's message of "Wed, 7 Dec
	2011 11:15:10 +0530")
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Viresh Kumar <viresh.kumar@st.com> writes:

[snip]

> Now, whats the benefit of 
>
> GIT_EDITOR=cat git commit --amend
>
> over
>
> git commit --amend -C HEAD
>
> ?

The latter preserves the original timestamp of the commit and other
environment variables like GIT_COMMITTER_NAME GIT_COMMITTER_EMAIL
whereas GIT_EDITOR=cat (or true or :) are equivalent to opening up the
commit in an editor and so consider these variables during execution.

For instance, you could say

$ GIT_EDITOR=cat GIT_COMMITTER_EMAIL=foo@bar.baz git commit --amend

and the commiter email would be set to foo@bar.baz

-- 
Cheers
~vijay

Gnus should be more complicated.