send-email: add --[no-]xmailer option

diff --git a/t/t9807-git-p4-submit.sh b/t/t9807-git-p4-submit.sh
index 7fab2ed977a529c8754b9e5acd44b7f7c2cfaf2f..1f74a88385e827f7162256fafc22db5de3d41bf8 100755 (executable)
--- a/t/t9807-git-p4-submit.sh
+++ b/t/t9807-git-p4-submit.sh
@@ -404,7 +404,7 @@ test_expect_success 'submit --prepare-p4-only' '
                git p4 submit --prepare-p4-only >out &&
                test_i18ngrep "prepared for submission" out &&
                test_i18ngrep "must be deleted" out &&
-               ! test_i18ngrep "everything below this line is just the diff" out
+               test_i18ngrep ! "everything below this line is just the diff" out
        ) &&
        (
                cd "$cli" &&