Re: Explanation needed for setfenv replacement for Lua 5.2

[Lorenzo Donati <lorenzodonatibz@...>]

On 04/05/2011 23.46, Roberto Ierusalimschy wrote:
> > Please, consider the following toy code:
> >
> > [...]
>
> This is the kind of use that deserves the use of the debug library,
> because you explicitly want to break the usual visibility rules.

Yes, definitely!

Clear separation of concerns. Lua is lexically scoped and _ENV & C. is 
coherent with that. In this use getfenv/setfenv were a workaround to 
emulate dynamic scoping, so I agree their use must be restrained and 
marked as "beware - know what you are doing".

[...]

> -- Roberto