Path: utzoo!mnetor!uunet!mcvax!ukc!its63b!aiva!jeff
From: jeff@aiva.ed.ac.uk (Jeff Dalton)
Newsgroups: comp.lang.lisp
Subject: Re: Structure editors in common lisp
Message-ID: <215@aiva.ed.ac.uk>
Date: 19 Dec 87 21:09:29 GMT
References: <1487@orstcs.CS.ORST.EDU> <464@cresswell.quintus.UUCP>
Reply-To: jeff@uk.ac.ed.aiva (Jeff Dalton)
Organization: Dept. of AI, Univ. of Edinburgh, UK
Lines: 16

In article <464@cresswell.quintus.UUCP> pds@quintus.UUCP (Peter Schachte) writes:
>The CommonLisp book talks about trying to maintain Write/Read
>consistency, but doesn't mention that CommonLisp fails to do this
>because of packages.  I won't belabor the point with an example:  I'm
>sure you've all seen them before.

The book discusses the consistencey rules on page 173.  You will note
that it specifies the conditions under which these rules remain true
and the sorts of "explicit action" that can cause them to become false.

So I have to disagree with the claim that CLtL doesn't mention the
consistency problems caused by packages.

Jeff Dalton,                      JANET: J.Dalton@uk.ac.ed             
AI Applications Institute,        ARPA:  J.Dalton%uk.ac.ed@nss.cs.ucl.ac.uk
Edinburgh University.             UUCP:  ...!ukc!ed.ac.uk!J.Dalton