fix bsd shell negation

diff --git a/t/t3700-add.sh b/t/t3700-add.sh
index 287e058e3766df129dcde82aeddecac59b46e2a6..68c5ddebdf565912af5f481283980169f069a7a6 100755 (executable)
--- a/t/t3700-add.sh
+++ b/t/t3700-add.sh
@@ -81,17 +81,17 @@ test_expect_success '.gitignore test setup' '
 
 test_expect_success '.gitignore is honored' '
        git add . &&
-       ! git ls-files | grep "\\.ig"
+       ! (git ls-files | grep "\\.ig")
 '
 
 test_expect_success 'error out when attempting to add ignored ones without -f' '
        ! git add a.?? &&
-       ! git ls-files | grep "\\.ig"
+       ! (git ls-files | grep "\\.ig")
 '
 
 test_expect_success 'error out when attempting to add ignored ones without -f' '
        ! git add d.?? &&
-       ! git ls-files | grep "\\.ig"
+       ! (git ls-files | grep "\\.ig")
 '
 
 test_expect_success 'add ignored ones with -f' '