Path: utzoo!utgpu!water!watmath!clyde!ima!think!barmar
From: barmar@think.COM (Barry Margolin)
Newsgroups: comp.lang.lisp
Subject: Re: Question about eval
Message-ID: <29266@think.UUCP>
Date: 13 Oct 88 06:51:45 GMT
References: <13733@iuvax.cs.indiana.edu> <20700006@iuvax>
Sender: news@think.UUCP
Reply-To: barmar@kulla.think.com.UUCP (Barry Margolin)
Organization: Thinking Machines Corporation, Cambridge, MA
Lines: 16

In article <20700006@iuvax> dyb@iuvax.cs.indiana.edu writes:
>I think Dan wants to know if he can reliably redefine eval so that his own
>eval is used by the top-level read-eval-print loop.

One of the proposals before X3J13 (the ANSI Common Lisp committee),
which I expect will be passed in a couple of months, specifies that
the effects of redefining any functions in the LISP package (i.e. any
function specified by the language standard) are undefined (it "is an
error", to use CLtL terminology).  So, I wouldn't write any code that
does this at the moment.

Barry Margolin
Thinking Machines Corp.

barmar@think.com
{uunet,harvard}!think!barmar