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Re: [PATCH 0/2] fix git-archive with empty trees

From
Junio C Hamano <gitster@pobox.com>
Date
Mar 11, 2013, 05:25 UTC
Message-ID
<7vfw02bj9q.fsf@alter.siamese.dyndns.org>
In-Reply-To
<20130311045811.GA13510@sigill.intra.peff.net>
Jeff King <peff@peff.net> writes:
Show 11 quoted lines
> On Sun, Mar 10, 2013 at 09:31:24PM -0400, Jeff King wrote:
>
>> I noticed that "git archive" will barf when the root tree is empty.
>> [...]
>> I didn't bother even looking at empty subtrees. AFAIK, git should never
>> produce them (it omits the tree entirely if there is no content in it).
>> You would have to fake it using hash-object manually. I suspect it would
>> work just fine, as we already exercise the empty-dir code paths in the
>> tests I did add.
>
> Curious, I went ahead and tested this. It does indeed work as expected.
Interesting.
> The following tests can be squashed into patch 2/2 if we want:
Why not---will do.  Thanks.
Show 28 quoted lines
> diff --git a/t/t5004-archive-corner-cases.sh b/t/t5004-archive-corner-cases.sh
> index 395dd58..cdb7d7a 100755
> --- a/t/t5004-archive-corner-cases.sh
> +++ b/t/t5004-archive-corner-cases.sh
> @@ -80,4 +80,23 @@ test_expect_success 'archive complains about pathspec on empty tree' '
>  	test_must_fail git archive --format=tar HEAD -- foo >/dev/null
>  '
>  
> +test_expect_success 'create a commit with an empty subtree' '
> +	empty_tree=$(git hash-object -t tree /dev/null) &&
> +	root_tree=$(printf "040000 tree $empty_tree\tsub\n" | git mktree)
> +'
> +
> +test_expect_success 'archive empty subtree with no pathspec' '
> +	git archive --format=tar $root_tree >subtree-all.tar &&
> +	make_dir extract &&
> +	"$TAR" xf subtree-all.tar -C extract &&
> +	check_dir extract sub
> +'
> +
> +test_expect_success 'archive empty subtree by direct pathspec' '
> +	git archive --format=tar $root_tree -- sub >subtree-path.tar &&
> +	make_dir extract &&
> +	"$TAR" xf subtree-path.tar -C extract &&
> +	check_dir extract sub
> +'
> +
>  test_done
Previous: Jeff King
Message 5 of 5 in “fix git-archive with empty trees”
  1. 0/2 fix git-archive with empty treesJeff King, Mar 11, 2013
  2. 1/2 test-lib: factor out $GIT_UNZIP setupJeff King, Mar 11, 2013
  3. 2/2 archive: handle commits with an empty treeJeff King, Mar 11, 2013
  4. Jeff KingMar 11, 2013
  5. Junio C HamanoMar 11, 2013

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