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Re: Elisp: What does ''nil mean?
From: |
Thomas Gehrlein |
Subject: |
Re: Elisp: What does ''nil mean? |
Date: |
16 May 2003 13:35:35 +0200 |
User-agent: |
Gnus/5.09 (Gnus v5.9.0) Emacs/21.1 |
David Kastrup <dak@gnu.org> writes:
> Thomas Gehrlein <thomas.gehrlein@t-online.de> writes:
>
> > The following line is from easy-menu-create-menu:
> >
> > ((eq keyword :active) (setq enable (or arg ''nil)))
> >
> > It is part of a (cond ...).
> >
> > What does "''nil" mean?
>
> The same as '(quote nil), an unevaluated list with the two members
> quote and nil.
Is this the same as (quote (quote nil))?
Why would you quote nil and not evaluate it? And if you evaluate it: Isn't nil
the same as (quote nil)?
Thomas