Subject: Re: detecting circular lists
From: Erik Naggum <>
Date: 2000/08/20
Newsgroups: comp.lang.lisp
Message-ID: <>

| Is there a Common Lisp function that detects whether or not a list
| is circular?

  The function list-length returns the length of a proper list, or nil
  when applied to a circular list.

  If this is not what you expected, please alter your expectations.