Path: utzoo!attcan!uunet!samsung!think!snorkelwacker!bloom-beacon!SCU.BITNET!RDAVIS
From: RDAVIS@SCU.BITNET
Newsgroups: comp.lang.scheme
Subject: (atom? '()) => error
Message-ID: <9003131055.aa18415@mintaka.lcs.mit.edu>
Date: 13 Mar 90 14:44:00 GMT
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 13

One more thing...
Actually, according to revised^3.99, it is not the case that
        (atom? '()) => #T
because atom? is undefined. The empty list is represented as '(), NOT
as the symbol NIL. NIL is treated the same as any other symbol, i.e., it
is initially undefined.
        (null? '()) => #T
and
        (symbol? '()) => ()
which may please those who did not want the empty list treated the same
way symbols were treated by atom?.

Ruth E. Davis