t7501: always use test_cmp instead of diff

diff --git a/t/t3700-add.sh b/t/t3700-add.sh
index 7d123d17fc156c61a8e85a399c3762e8075485de..2ac93a346d016c65614f2bf6142049e7bdc39bd1 100755 (executable)
--- a/t/t3700-add.sh
+++ b/t/t3700-add.sh
@@ -222,4 +222,12 @@ test_expect_success 'git add (add.ignore-errors = false)' '
        ! ( git ls-files foo1 | grep foo1 )
 '
 
+test_expect_success 'git add '\''fo\[ou\]bar'\'' ignores foobar' '
+       git reset --hard &&
+       touch fo\[ou\]bar foobar &&
+       git add '\''fo\[ou\]bar'\'' &&
+       git ls-files fo\[ou\]bar | grep -F fo\[ou\]bar &&
+       ! ( git ls-files foobar | grep foobar )
+'
+
 test_done