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Re: t and nil in pure memory?
From: |
David Kastrup |
Subject: |
Re: t and nil in pure memory? |
Date: |
Sun, 22 Nov 2009 09:14:16 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.1.50 (gnu/linux) |
Sam Steingold <address@hidden> writes:
>> * Chong Yidong <address@hidden> [2009-11-20 00:47:18 -0500]:
>>
>> FWIW, in CLISP and CMUCL (unintern nil) and (unintern t) are no-ops
>> returning nil. Presumably the other CL implementations do likewise.
>
> This is not true about CLISP (and presumably other CL implementations).
>
> [2]> (unintern cl:t :cl)
>
> ** - Continuable Error
>
> i.e., it IS possible to remove the T symbol (with all the trouble this
> entails).
>
> As a CLISP maintainer, I don't think T & NIL are special enough.
I am quite appalled to what my reductio ad absurdum argument has lead.
The original topic was in the thread title, and I pointed out that
obarray chains ending in pure memory do not need further modification.
Then it was pointed out that unintern may change the game in that
respect, and I replied that I did not think this much of a concern for t
and nil.
>From then things went downhill.
--
David Kastrup
- Re: t and nil in pure memory?, (continued)
- Re: t and nil in pure memory?, David Kastrup, 2009/11/17
- Re: t and nil in pure memory?, Richard Stallman, 2009/11/18
- Re: t and nil in pure memory?, Stefan Monnier, 2009/11/18
- Re: t and nil in pure memory?, Daniel Colascione, 2009/11/18
- Re: t and nil in pure memory?, Stefan Monnier, 2009/11/18
- Re: t and nil in pure memory?, Richard Stallman, 2009/11/19
- Re: t and nil in pure memory?, Stefan Monnier, 2009/11/19
- Re: t and nil in pure memory?, Richard Stallman, 2009/11/19
- Re: t and nil in pure memory?, Chong Yidong, 2009/11/20
- Re: t and nil in pure memory?, Sam Steingold, 2009/11/22
- Re: t and nil in pure memory?,
David Kastrup <=
- Re: t and nil in pure memory?, Dan Nicolaescu, 2009/11/19
- Re: t and nil in pure memory?, Dan Nicolaescu, 2009/11/15
- Re: t and nil in pure memory?, Stefan Monnier, 2009/11/15
- Re: t and nil in pure memory?, Ken Raeburn, 2009/11/18
- Re: t and nil in pure memory?, Daniel Colascione, 2009/11/18
- Re: t and nil in pure memory?, Tom Tromey, 2009/11/18
- Re: t and nil in pure memory?, Tom Tromey, 2009/11/18
- Re: t and nil in pure memory?, Ken Raeburn, 2009/11/22
- Re: t and nil in pure memory?, Stephen J. Turnbull, 2009/11/23
- Re: t and nil in pure memory?, Ken Raeburn, 2009/11/24