I did mean that as a comment, yes. I put that as a comment because in either of the other cases it already has a continue statement, so it wouldn't get to after

I did mean that as a comment, yes. I put that as a comment because in either of the other cases it already has a continue statement, so it wouldn't get to after the else comment unless the other conditions weren't met. Also, you are right that I made a mistake, in that I forgot to check if a wrong next character was a correct first character and similar problems. Oops! Ok. What I was trying to argue was that it is possible for a program in a Turing complete system to have no exploits, not that it is easy to write a program like that. I thought it was being claimed that it is completely impossible to write a program with no exploits for a Turing complete machine, and I was trying to argue against that.