t / t4101 / diff.2-1on commit Define NO_MEMMEM on Darwin as it lacks the function (3d59405)
   1--- a/frotz
   2+++ b/frotz
   3@@ -1,2 +1,3 @@
   4 a
   5-b
   6\ No newline at end of file
   7+b
   8+c