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On 2010-01-12, Roberto Ierusalimschy <> wrote:
> > I do not know what do you mean by "different approach to their problem".
> For instance to use a proxy table as the environment (as suggested in
>  the list).
>  -- Roberto

Proxy tables would bring in dynamic scoping  through a back door. Also
proxy tables do not provide the same degree of isolation and
compartmentalization as fenv.