Brian Mastenbrook scripsit:

> In the example, I showed how a separate-instantiation implementation  
> would re-instantiate the previous top-level-program-as-library when  
> entering a new top-level program which imports the previous top-level  
> program. 

And a really beautiful example it is, too.

I would really like to know how it is that R6RS top-level programs are
different in their semantics from R5RS programs, though.  I'm told there's
a difference, but I don't see it (apart from the question of imports,
to be sure).

Can someone explain that to me?

-- 
Only do what only you can do.               John Cowan <[email protected]>
  --Edsger W. Dijkstra's advice
    to a student in search of a thesis

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