Andy:

Do you have an example of how unbound and bound variables with different
treatments might affect macro expansion? The only thing I can think of is
the case where a few implementations wrongly (IMO) broke hygienic guarantees
(such as they are, or are implied) in REPLs because top-level variables
could shadow one another in multiple invokations of a macro.

--
Aaron W. Hsu | arcfide@sacrideo.us | http://www.sacrideo.us
Programming is just another word for the lost art of thinking.

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