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Re: Masinter's remarks on #,
- To: Guy.Steele at CMU-CS-A
- Subject: Re: Masinter's remarks on #,
- From: Masinter at PARC-MAXC
- Date: Thu, 18 Nov 1982 12:47:00 -0000
- Cc: common-lisp at SU-AI
- In-reply-to: Guy.Steele's message of 16 November 1982 2129-EST (Tuesday)
While READ is many-to-one, most of the identifications are merely syntactic;
that is (x . (a b c)) and (x a b c) really are the same program fragment
as far as program semantics go, while #,X and 3 (when X=3) are semantically
different.
One test for the distinction between syntactic and semantic macro characters is
whether READ = READ-PRINT-(new environment)-READ. The difficult cases then
remain #+ #- #. and #,.
Larry