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From: Eli Zaretskii <eliz@elta.co.il>
Subject: Re: What does the coding system nil mean?
Date: 26 Jan 2004 08:08:25 +0200	[thread overview]
Message-ID: <ud6972qee.fsf@elta.co.il> (raw)
In-Reply-To: <m3u12jpwg4.fsf@defun.localdomain> (message from Jesper Harder on Sun, 25 Jan 2004 22:09:15 +0100)

> Newsgroups: gnu.emacs.help
> From: Jesper Harder <harder@myrealbox.com>
> Date: Sun, 25 Jan 2004 22:09:15 +0100
> 
> Then nil isn't really a coding system, but just a value that some
> coding system related functions happen to interpret in a certain way.

It's a coding system in the sense that every primitive that accepts a
coding system symbol also accepts nil.

> Though, I think it's a bit odd for a predicate called
> `coding-system-p' to return t for an object that is _not_ in fact a
> coding system.

IMHO, it's no more odd than this:

   M-: (listp nil) RET => t

  reply	other threads:[~2004-01-26  6:08 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-01-24 22:13 What does the coding system nil mean? Jesper Harder
2004-01-25  6:10 ` Eli Zaretskii
     [not found] ` <mailman.1298.1075010993.928.help-gnu-emacs@gnu.org>
2004-01-25 21:09   ` Jesper Harder
2004-01-26  6:08     ` Eli Zaretskii [this message]
     [not found]     ` <mailman.1343.1075097239.928.help-gnu-emacs@gnu.org>
2004-01-26 15:07       ` Stefan Monnier
2004-01-26 17:28         ` Eli Zaretskii
2004-01-27 15:22         ` Oliver Scholz
2004-01-27 16:33           ` Stefan Monnier
2004-01-26 15:20       ` Jesper Harder
2004-01-26 17:26         ` Eli Zaretskii
2004-01-27 14:44         ` Oliver Scholz

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