True. My oversight... so ++ for taking the time to point that out. Thank you.
However, my entire answer sort of failed to even hint at what should, perhaps, have been my point, which is (no frills): "It's often better to think about what to allow, and permit only that set, rather than trying to tin-over all the rat holes."
If you didn't program your executable by toggling in binary, it wasn't really programming!