Junio C Hamano <gitster@pobox.com> writes:

quoted text
> René Scharfe <rene.scharfe@lsrfire.ath.cx> writes:
>
>> Garry Dolley schrieb:
>>> I didn't see this happen with git 1.5.x, but if you do git-shortlog on a bare 
>>> repo, without specifying --bare, the command will seemingly hang indefinitely.
>>
>> FWIW, I tried git 1.5.0 and it hangs, too.  Which exact version did work
>> for you?  Could you, based on it, bisect the commit that introduced this
>> behaviour?
>>
>> As a workaround, you can use "git log | git shortlog".
>
> It is not a workaround.  Shortlog can work as a filter to "git log", but
> if you give revs to work on, e.g. "git shortlog -s -n v1.5.6.5.." or "git
> shortlog HEAD", it can generate the log and feed to itself.
>
> Somehow it (perhaps incorrectly, I did not look at the command line input)
> judging that your command line is telling it not to do the log generation
> itself but instead you will feed the log from its standard input, which
> happens to be your terminal.  So another workaround would be to type the
> series of log messages ;-)

And I think this is related to the complexity that snuck in when worktree
feature was added to the setup sequence.

Untested, but I think this would help.

 setup.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git c/setup.c w/setup.c
index 6cf9094..296f712 100644
--- c/setup.c
+++ w/setup.c
@@ -461,7 +461,7 @@ const char *setup_git_directory_gently(int *nongit_ok)
 			inside_git_dir = 1;
 			if (!work_tree_env)
 				inside_work_tree = 0;
-			setenv(GIT_DIR_ENVIRONMENT, ".", 1);
+			set_git_dir(".");
 			check_repository_format_gently(nongit_ok);
 			return NULL;
 		}
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