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From: bjaspan@ATHENA.MIT.EDU ("Barr3y Jaspan")
Newsgroups: gnu.emacs.help,comp.emacs
Subject: Re: You can  makunbound  nil  (!)
Message-ID: <9101202012.AA03380@steve-dallas.MIT.EDU>
Date: 20 Jan 91 20:12:21 GMT
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'nil' and 't' are symbols in emacs lisp, and as such they have a
function cell in addition to their value cell.  I have often thought
about defining functions to use them, too

(defun nil (a) (interactive) (setq a nil))

(defun t (a) (interactive) (setq a nil))

since it would be faster to do M-x nil var-name than M-x set-variable
var-name nil or ESC ESC (setq var-name nil).  It's a gross violation
of the abstraction barrier, but it ought to work.. :-)

Barr3y