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While on the topic of symbols and such, I have a question
about EVAL-WHEN. Does it only allow LISP:EVAL, LISP:COMPILE
and LISP:LOAD, or does it only check the print-name?
I think it should check print-names, so you can
shadow these symbols. Otherwise, you would be forced
to add the package prefix in all the EVAL-WHEN forms.
Eval-when is currently defined to look for EVAL, COMPILE, and LOAD as
symbols in the Lisp package. Maybe they should have been keywords, but
it's too late now. There's a reasonably good chance that EVAL-WHEN will
be replaced in some future badly-needed cleanup of the compiler semantics.