[PATCH] t9502: do not assume GNU tar

[Junio C Hamano <gitster@pobox.com>]

The check_snapshot function inspects and makes sure that not cruft
outside the repository hierarchy is added to the tar archive, by
insisting that the output from "tar tf" on the resulting archive
does not contain anything that does not begin with "$prefix/".
There are two issues with this implementation:

 - Traditional tar implemenations that do not understand
   pax_global_header will write it out as if it is a plain file at
   the top-level;

 - Some implementations of tar does not add trailing slash when
   showing a directory entry (i.e. the output line for the entire
   archive will show "$prefix", not "$prefix/").

Fix them so that what we want to validate can be tested with
traditional tar implementations.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 t/t9502-gitweb-standalone-parse-output.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/t9502-gitweb-standalone-parse-output.sh b/t/t9502-gitweb-standalone-parse-output.sh
index 731e64c..c662298 100755
--- a/t/t9502-gitweb-standalone-parse-output.sh
+++ b/t/t9502-gitweb-standalone-parse-output.sh
@@ -40,7 +40,7 @@ check_snapshot () {
 	echo "basename=$basename"
 	grep "filename=.*$basename.tar" gitweb.headers >/dev/null 2>&1 &&
 	"$TAR" tf gitweb.body >file_list &&
-	! grep -v "^$prefix/" file_list
+	! grep -v -e "^$prefix$" -e "^$prefix/" -e "^pax_global_header$" file_list
 }
 
 test_expect_success setup '
-- 
1.8.1.rc2.196.g90926c8