I think pjmlp knows about this. The important word was "require", which makes a lot of difference. If you don't guarantee TCO at the language level, you can aff

I think pjmlp knows about this. The important word was "require", which makes a lot of difference. If you don't guarantee TCO at the language level, you can afford to emit code that performs other useful things (like debugging) while remaining conform to the language specification.