From ...
From: Erik Naggum <erik@naggum.no>
Subject: Re: why (reverse "aba")  not compliing?
Date: 1999/03/02
Message-ID: <3129358768479279@naggum.no>#1/1
X-Deja-AN: 450310312
References: <Pine.SOL.3.96L.990301234302.14145A-100000@caesar.phil.cmu.edu>
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Organization: Naggum Software; +47 8800 8879; http://www.naggum.no
Newsgroups: comp.lang.lisp

* Hyunchul Kim <hyunchul@andrew.cmu.edu>
| From a book I saw reverse is a function for  sequences, so I believe it
| is for strings as well buy when I tried (reverse "aba") in CL, it did not
| compile and says "wrong type argument: consp "aba" "

  it seems that you are using a Lisp that is not Common Lisp at all.  your
  previous problems with MAPCAR look like Emacs Lisp problems, and the
  above error message is also provided by Emacs Lisp.  Emacs Lisp is very
  far from a Common Lisp implementation.  even with the CL package, the
  core functions are still broken, but (require 'cl) does give you MAPCAR*,
  but no REVERSE*.

#:Erik