We weren't exiting from find_and_copy_message early if we didn't find the sequence. We would eventually exit without finding what we were looking for anyway, but this should be more efficient.
We had a couple of TODO's that were easy to fix, so fix them here.
find_and_copy_messageearly if we didn't find the sequence. We would eventually exit without finding what we were looking for anyway, but this should be more efficient.