Environment objects, closed environments, local-eval...

[Lalo Martins <lalo@webcom.com>]

On Feb 24, Roland Orre decided to present us with:
> <alexander.asteroth@informatik.uni-bonn.de> writes:
> > ... Local eval (with
> > a local environment) seems to be a good choice, but I can't figure out
> > how to specify a proper environment. ...
> I have "the-enviroment" defined as:
> (define the-environment
>   (procedure->syntax
>    (lambda(x env) env)))
> then you can do e.g.
> (define foo (the-environment))
> and later
> (local-eval expr foo)

But how can I get a closed environment object to work with? So
that, for example
(define foo 1)
(local-eval '(define foo 2) env)
would leave foo as 1 outside env?

[]s,
                                               |alo
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