fix bsd shell negation

diff --git a/t/t7501-commit.sh b/t/t7501-commit.sh
index c0288f345fb5809d8606f4d3cfaf73d24d6c7281..89710afcb5141beee6b02d8a67e66e11c6f15ad0 100755 (executable)
--- a/t/t7501-commit.sh
+++ b/t/t7501-commit.sh
@@ -41,7 +41,7 @@ test_expect_success \
 test_expect_success \
        "using paths with --interactive" \
        "echo bong-o-bong >file &&
-       ! echo 7 | git-commit -m foo --interactive file"
+       ! (echo 7 | git-commit -m foo --interactive file)"
 
 test_expect_success \
        "using invalid commit with -C" \