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[PATCH 01/10] test-lib: --valgrind should not override --verbose-log

The --verbose test option cannot be used with test harnesses
like "prove". Instead, you must use --verbose-log.

Since the --valgrind option implies --verbose, that means
that it cannot be used with prove. I.e., this does not work:

  prove t0000-basic.sh :: --valgrind

You'd think it could be fixed by doing:

  prove t0000-basic.sh :: --valgrind --verbose-log

but that doesn't work either, because the implied --verbose
takes precedence over --verbose-log. If the user has given
us a specific option, we should prefer that.

Signed-off-by: Jeff King <peff@xxxxxxxx>
I ended up not using valgrind for most of my tests, but this did bite me
early on when I tried to run "make GIT_TEST_OPTS=--valgrind prove".

 t/test-lib.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/t/test-lib.sh b/t/test-lib.sh
index 5fbd8d4a90..62461a6e35 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -274,7 +274,7 @@ then
 	test -z "$verbose" && verbose_only="$valgrind_only"
 elif test -n "$valgrind"
-	verbose=t
+	test -z "$verbose_log" && verbose=t
 if test -n "$color"