From mboxrd@z Thu Jan  1 00:00:00 1970
From: Junio C Hamano <gitster@pobox.com>
Subject: Re: [PATCH] Add new @ shortcut for HEAD
Date: Tue, 30 Apr 2013 10:56:30 -0700
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Cc: Duy Nguyen <pclouds@gmail.com>,
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To: Ramkumar Ramachandra <artagnon@gmail.com>
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In-Reply-To: <CALkWK0=GbhALxX0G-ka5oAbixoJv4uKPHAx5LPezgTyGxW_3MQ@mail.gmail.com>
	(Ramkumar Ramachandra's message of "Tue, 30 Apr 2013 23:10:46 +0530")
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Ramkumar Ramachandra <artagnon@gmail.com> writes:

> Junio C Hamano wrote:
>> If you accept only "@" but not "master@", that behaviour needs a
>> wrong world model to understand and justify (one of which is "@ is a
>> synonym for HEAD").  If your rule is "In $anything@{$n}, you can
>> drop {$n} when $n==0", then HEAD@{0} becomes HEAD@ and master@{0}
>> becomes master@, and @{0} becomes @ naturally.
>
> Besides, you're going in the wrong direction this time.  You are
> trying to fit an explanation to something that is useless.  How is
> master@ useful?

How else would you explain why "rev-parse --symbolic-full-name @"
does not make sense and "update-ref @" does not update HEAD?