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Re: comments on new-model.txt

From: Lynn Winebarger
Subject: Re: comments on new-model.txt
Date: Wed, 11 Sep 2002 02:28:10 -0500

On Monday 09 September 2002 17:55, Marius Vollmer wrote:
> > This would be a convenient way to represent imported variables.  The
> > only concrete reason I can offer for including a pointer (of some
> > form) to the top level environment of an external variable (actually
> > any top-level variable) is for ones that aren't bound at the time of
> > parsing (recalling that correct macro expansion can't be lazy in the
> > presence of side-effects, as some of the syntax-case examples I've
> > been posting should demonstrate).
> What would you do with that pointer?

    Actually, I believe I was originally thinking of using it for macro
expansion purposes (so if a macro was bound to an external variable,
that top-level environment could be stacked on whatever the top-level
environment "currently" is for macro lookups.


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