New tail recursion decorator

[Tim N. van der Leeuw]

Duncan Booth wrote:
> Tim N. van der Leeuw wrote:
>
[...]
> @tail_recursion
> def factorial2(n):
>     # do the stuff
>     pass
>
> your 'do the stuff' actually had an erroneous call to 'factorial'. If you
> are going to rename the function you have to rename the recursive calls as
> well. (At least, that's what I forgot to do when I first tried it and
> couldn't understand why it gave me an answer instead of crashing.)
[...]

Duncan,

You're totally right. Somehow, I had managed to completely overlook
this. Oops!
My apologies! :)

--Tim