From: Linus Torvalds <torvalds@osdl.org>
Date: Tue, 27 Sep 2005 15:34:22 GMT
Subject: Re: Cogito: cg-clone doesn't like packed tag objects
Message-ID: <Pine.LNX.4.58.0509270821590.3308@g5.osdl.org>
In-Reply-To: <4338F3F6.8040401@michonline.com>



On Tue, 27 Sep 2005, Ryan Anderson wrote:
> 
> git-rev-parse $tagname^0

You need "--verify". Otherwise git-rev-parse will think that you just have 
a strange filename or other random thing:

	prompt$ git-rev-parse 000^0
	000^0

	prompt$ git-rev-parse --verify 000^0
	fatal: Needed a single revision

Now, if the tag doesn't point to a commit, then the "^0" thing will fail. 
What you could use instead is

	git-rev-list --max-count=1 "$tag"

since git-rev-list will actually follow the tag. Of course, whether it 
does so correctly or not if the tagged object doesn't exist, I dunno. 
Testing needed.

Finally, you might just do it by hand

	type=$(git-cat-file -t "$obj") || exit
	if [ "$type" == "$tag" ]; then
		tagged=$(git-cat-file tag "$obj" |
			sed 's/object // ; q')
		git-rev-parse --verify "$tagged"
	fi

untested, of course.

		Linus