Re: Let's not break existing scripts.

[Tom N Harris <telliamed@...>]

On 11/10/2011 07:13 PM, Luiz Henrique de Figueiredo wrote:
> > Would it be possible for the compiler to ensure that _ENV is always the first upvalue?
>
> Possible, yes, but it would bloat *all* functions and many functions do
> not use globals at all.

How about ensure that if _ENV is present then it is the first upvalue? 
So you check for it without a loop. The first upvalue is either _ENV, 
some other variable, or nil; only the first case references globals. 
Furthermore, don't strip the _ENV name and it will still be found even 
when other variable names are removed.

--
- tom
telliamed@whoopdedo.org