[PATCH] squash! tests: fix overeager scrubbing of environment variables

[Jonathan Nieder <jrnieder@gmail.com>]

(+cc: Jeff and Ævar for perl advice)
Jonathan Nieder wrote:
> Jens Lehmann wrote:

>> - GIT_SKIP_TESTS
>> - GIT_TEST*
>> - GIT_PROVE_OPTS
>>
>> Let's fix that by adding them to the exception list.
>>
>> Signed-off-by: Jens Lehmann <Jens.Lehmann@web.de>
>
> Acked-by: Jonathan Nieder <jrnieder@gmail.com>
>
> It misses a few, though:
>
>  - GIT_REMOTE_SVN_TEST_BIG_FILES
>  - GIT_NOTES_TIMING_TESTS
>  - GIT_PATCHID_TIMING_TESTS
>  - GIT_VALGRIND_OPTIONS

How about something like this on top?  Would it still be safe on
platforms with ancient perl?

Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
---
 t/test-lib.sh |   10 +++++++++-
 1 files changed, 9 insertions(+), 1 deletions(-)

diff --git a/t/test-lib.sh b/t/test-lib.sh
index 4a8c443..d28e647 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -46,7 +46,15 @@ unset VISUAL
 unset EMAIL
 unset $(perl -e '
 	my @env = keys %ENV;
-	my @vars = grep(/^GIT_/ && !/^GIT_(TRACE|DEBUG|USE_LOOKUP|SKIP_TESTS|TEST|PROVE_OPTS)/, @env);
+	my @vars = grep(/^GIT_/ && !m{^GIT_(
+			TRACE |
+			DEBUG |
+			USE_LOOKUP |
+			TEST |
+			.*_TEST |
+			PROVE |
+			VALGRIND
+		)}x, @env);
 	print join("\n", @vars);
 ')
 GIT_AUTHOR_EMAIL=author@example.com
-- 
1.7.4.2