difftool: fallback on merge.guitool

diff --git a/t/t7008-grep-binary.sh b/t/t7008-grep-binary.sh
index 615e7e0162518087fff355bac156ba8bbdd6df38..2d87c49b753935f11f291371e8dd028e21651308 100755 (executable)
--- a/t/t7008-grep-binary.sh
+++ b/t/t7008-grep-binary.sh
@@ -57,9 +57,8 @@ test_expect_success 'git grep -ah ina a' '
 '
 
 test_expect_success 'git grep -I ina a' '
-       : >expect &&
        test_must_fail git grep -I ina a >actual &&
-       test_cmp expect actual
+       test_must_be_empty actual
 '
 
 test_expect_success 'git grep -c ina a' '
@@ -81,9 +80,8 @@ test_expect_success 'git grep -L bar a' '
 '
 
 test_expect_success 'git grep -q ina a' '
-       : >expect &&
        git grep -q ina a >actual &&
-       test_cmp expect actual
+       test_must_be_empty actual
 '
 
 test_expect_success 'git grep -F ile a' '