[PATCH 3/5 v2] contrib/diffall: eliminate use of tar

[Tim Henigan <tim.henigan@gmail.com>]

The 'tar' utility is not available on all platforms (some only support
'gnutar').  An earlier commit created a work-around for this problem,
but a better solution is to eliminate the use of 'tar' completely.

Signed-off-by: Tim Henigan <tim.henigan@gmail.com>
---

Changes in v2:
  - Added missing '$name' component to the 'cp' target.  This bug
    resulted in modified working copy files being copied to the wrong
    location in the tmp directory.  It only affected files in sub-
    directories of the repo root.


 contrib/diffall/git-diffall |   12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/contrib/diffall/git-diffall b/contrib/diffall/git-diffall
index 443f646..f981ac1 100755
--- a/contrib/diffall/git-diffall
+++ b/contrib/diffall/git-diffall
@@ -202,10 +202,14 @@ then
 		fi
 	done < "$tmp/filelist"
 else
-	# Mac users have gnutar rather than tar
-	(tar --ignore-failed-read -c -T "$tmp/filelist" | (cd "$tmp/$right_dir" && tar -x)) || {
-		gnutar --ignore-failed-read -c -T "$tmp/filelist" | (cd "$tmp/$right_dir" && gnutar -x)
-	}
+	while read name
+	do
+		if test -e "$name"
+		then
+			mkdir -p "$tmp/$right_dir/$(dirname "$name")"
+			cp "$name" "$tmp/$right_dir/$name"
+		fi
+	done < "$tmp/filelist"
 fi
 
 # Populate the tmp/left_dir directory with the files to be compared
-- 
1.7.10.rc0