Re: (sub)string comp

[Luiz Henrique de Figueiredo <lhf@...>]

> I forgot the 'i':
> 
> if str:find('^'..sub,i) then ... end

This is seems faster than my suggestion but it does create a new string,
which the OP seems to want to avoid. My suggestion can be slow if str is
*very* long.