From mboxrd@z Thu Jan  1 00:00:00 1970
From: Junio C Hamano <gitster@pobox.com>
Subject: Re: [PATCH 7/9] difftool: teach difftool to handle directory diffs
Date: Tue, 20 Mar 2012 11:35:14 -0700
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 <CAFouetiSyTFAR=CJBuYEcpUDq=f2jVaOMnsThgEP-zSbTH1H_g@mail.gmail.com>
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To: Tim Henigan <tim.henigan@gmail.com>
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In-Reply-To: <CAFouetiSyTFAR=CJBuYEcpUDq=f2jVaOMnsThgEP-zSbTH1H_g@mail.gmail.com> (Tim
 Henigan's message of "Tue, 20 Mar 2012 13:43:52 -0400")
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Tim Henigan <tim.henigan@gmail.com> writes:

> However, when 'difftool --dir-diff' is run from a subdirectory of the
> Git repository, there are problems.
>   - The temporary index file generated by 'git update-index' appears
> to be correct.
>   - 'git checkout-index --all --prefix=$tmp' command does not work
> (output tmp dir is empty).

Hrmph.

$ rm -fr /tmp/xyz
$ cd Documentation
$ git checkout-index --all --prefix=/tmp/xyz/
$ ls -F /tmp/xyz
Documentation/
$ rm -fr /tmp/xyz
$ GIT_DIR=$(pwd)/../.git GIT_WORK_TREE=$(pwd) \
  git checkout-index --all --prefix=/tmp/xyz/
$ ls -FC /tmp/xyz | head -2 
abspath.c                   git-merge-octopus.sh*       reflog-walk.c
aclocal.m4                  git-merge-one-file.sh*      reflog-walk.h

Be sure to have the trailing slash in $tmp.