[R6RS] Eval vs. phases

[Michael Sperber]

dyb at cs.indiana.edu writes:

>> I've got another question, probably naive:
>>
>> Don't we need to distinguish between expand and run phases *within*
>> the eval phase?
>
> With Model 2, yes, and it's not clear how to do so.  This was what I meant
> by "Unfortunately, this makes eval a bit more difficult to handle, since
> we'll need some sort of argument or wrapper on the expression passed to
> eval to specify the meta levels at which the libraries used by the
> evaluated code are invoked".

I was thinking less in terms of the semantics of execution, but in
terms of what's visible.  Doesn't that problem remain even in Model 1?

-- 
Cheers =8-} Mike
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