From mboxrd@z Thu Jan  1 00:00:00 1970
From: Junio C Hamano <junkio@cox.net>
Subject: Re: diff against a tag ?
Date: Thu, 28 Apr 2005 14:28:38 -0700
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Cc: Dave Jones <davej@redhat.com>, git@vger.kernel.org
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To: Linus Torvalds <torvalds@osdl.org>
In-Reply-To: <Pine.LNX.4.58.0504281358060.18901@ppc970.osdl.org> (Linus
 Torvalds's message of "Thu, 28 Apr 2005 14:01:40 -0700 (PDT)")
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>>>>> "LT" == Linus Torvalds <torvalds@osdl.org> writes:

LT> Right now fsck is the only thing that reports tags that aren't referenced 
LT> some other way. Once you know the tag, things are easy - even without 
LT> Junio's patch you can just do
LT> 	object=$(cat-file tag $tag | sed 's/object //;q')
LT> and then you can just do
LT> 	diff-tree $object $(cat .git/HEAD)
LT> or whatever you want to do.

Of course you are right.  The patch is about skipping the first
step and requiring you to know what you have is a tag not a
commit.

LT> Dave: do a "fsck --tags" in your tree, and it will talk about the tags it
LT> finds. Then you can create files like .git/refs/tags/v2.6.12-rc2 that
LT> contain pointers to those tags..

Arrrrrrrrrgh!  I just did "fsck --tags" blindly X-<.  Good thing
I was not root.

Of course you meant "fsck-cache --tags" ;-).