From mboxrd@z Thu Jan  1 00:00:00 1970
From: Junio C Hamano <junkio@cox.net>
Subject: Re: [PATCH] annotate: Support annotation of files on other revisions.
Date: Sun, 05 Mar 2006 22:16:36 -0800
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To: git@vger.kernel.org
In-Reply-To: <20060306055036.GB26820@spearce.org> (Shawn Pearce's message of
	"Mon, 6 Mar 2006 00:50:36 -0500")
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Shawn Pearce <spearce@spearce.org> writes:

> 	git-diff Makefile
> 	git-diff HEAD Makefile
>
> ?  (Which is rather ugly as what if you have a tracked file actually
> called HEAD and you want the first form when the commit-ish is
> omitted.)  So accepting an optional commit-ish before the filename
> would be in line with what git-diff accepts today.

The use of "start of filelist" marker "--" is optional when
unambiguous, and that is why "git-diff Makefile" works.  To view
the change you still haven't update-index'ed to the path called
"HEAD", you would naturally say "git-diff -- HEAD"