GNU bug report logs - #3752
23.0.95; I can not understant a sentence in Intro to Emacs Lisp .

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Package: emacs;

Reported by: waterloo <waterloo2005 <at> gmail.com>

Date: Sat, 4 Jul 2009 13:05:04 UTC

Severity: normal

Done: Glenn Morris <rgm <at> gnu.org>

Bug is archived. No further changes may be made.

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Message #14 received at 3752 <at> emacsbugs.donarmstrong.com (full text, mbox):

From: Glenn Morris <rgm <at> gnu.org>
To: waterloo <waterloo2005 <at> gmail.com>
Cc: 3752 <at> debbugs.gnu.org
Subject: Re: bug#3752: 23.0.95; I can not understant a sentence in Intro to 
	Emacs Lisp .
Date: Sat, 4 Jul 2009 22:30:29 -0400

[Please use "reply to all".]

waterloo wrote (on Sun, 5 Jul 2009 at 10:13 +0800):

> yes,it is clearer . thanks
> 
> In 11.1.2 An Example:`print-elements-of-list', I can not understand why
> there is a `nil' in the context .

This is explained at the end of the section:

 Since the last expression in the function is the `while' loop, and
 since `while' loops always return `nil', a `nil' is printed after the
 last element of the list.
This bug report was last modified 15 years and 316 days ago.

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