From mboxrd@z Thu Jan  1 00:00:00 1970
From: Dmitry Potapov <dpotapov@gmail.com>
Subject: Re: [q] git-diff --reverse 7def2be1..7def2be1^
Date: Mon, 7 Jul 2008 00:39:52 +0400
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References: <20080620082034.GA24913@elte.hu> <m3d4mcmq20.fsf@localhost.localdomain> <37fcd2780807060916h7d8c4e6mba7f30570d527dc3@mail.gmail.com> <7vprpqdbjx.fsf@gitster.siamese.dyndns.org>
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Cc: Jakub Narebski <jnareb@gmail.com>, Ingo Molnar <mingo@elte.hu>,
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To: Junio C Hamano <gitster@pobox.com>
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On Sun, Jul 06, 2008 at 01:04:18PM -0700, Junio C Hamano wrote:
>     Two other shorthands for naming a set that is formed by a commit
>     and its parent commits exists.  `r1{caret}@` notation means all
>     parents of `r1`.  `r1{caret}!` includes commit `r1` but excludes
>     its all parents.

So, I would say that rev^! is shorthand for rev^@..rev, but it does not
actually work:

git rev-list 7ac749c^@..7ac749c
fatal: ambiguous argument '7ac749c^@..7ac749c': unknown revision or path
not in the working tree.

yet "^rev^@ rev" syntax does:

git rev-list ^7ac749c^@ 7ac749c
7ac749c96d143ba4f76723959892cbaddbe8ed07

Is it a bug or feature?

Puzzled...

Dmitry