From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.org!not-for-mail
From: Stefan Monnier <monnier@iro.umontreal.ca>
Newsgroups: gmane.emacs.help
Subject: Re: Surrounding Lexical Variable Reference in the Body of defun
Date: Wed, 22 Aug 2012 11:11:06 -0400
Message-ID: <jwvtxvvvucc.fsf-monnier+gnu.emacs.help@gnu.org>
References: <8b43586d-2ad4-4cf6-ae15-446e909bf496@googlegroups.com>
NNTP-Posting-Host: plane.gmane.org
Mime-Version: 1.0
Content-Type: text/plain
X-Trace: ger.gmane.org 1345648516 31355 80.91.229.3 (22 Aug 2012 15:15:16 GMT)
X-Complaints-To: usenet@ger.gmane.org
NNTP-Posting-Date: Wed, 22 Aug 2012 15:15:16 +0000 (UTC)
To: help-gnu-emacs@gnu.org
Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed Aug 22 17:15:16 2012
Return-path: <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>
Envelope-to: geh-help-gnu-emacs@m.gmane.org
Original-Received: from lists.gnu.org ([208.118.235.17])
	by plane.gmane.org with esmtp (Exim 4.69)
	(envelope-from <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>)
	id 1T4CeK-0001Cb-Cs
	for geh-help-gnu-emacs@m.gmane.org; Wed, 22 Aug 2012 17:15:16 +0200
Original-Received: from localhost ([::1]:44201 helo=lists.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>)
	id 1T4CeI-0000S9-Nl
	for geh-help-gnu-emacs@m.gmane.org; Wed, 22 Aug 2012 11:15:14 -0400
Original-Received: by 10.66.85.199 with SMTP id j7mr3216095paz.36.1345648267571;
	Wed, 22 Aug 2012 08:11:07 -0700 (PDT)
Original-Path: usenet.stanford.edu!g10no2990852pbl.0!news-out.google.com!t10ni20369549pbh.0!nntp.google.com!npeer01.iad.highwinds-media.com!news.highwinds-media.com!feed-me.highwinds-media.com!post01.iad.highwinds-media.com!newsfe04.iad.POSTED!00000000!not-for-mail
Original-Newsgroups: gnu.emacs.help
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.2.50 (gnu/linux)
Cancel-Lock: sha1:tBQVUP5nXwT81ShHjeCmtHTCZEI=
Original-Lines: 16
Original-X-Complaints-To: abuse@UsenetServer.com
Original-NNTP-Posting-Date: Wed, 22 Aug 2012 15:11:07 UTC
X-Received-Bytes: 1277
Original-Xref: usenet.stanford.edu gnu.emacs.help:194110
X-BeenThere: help-gnu-emacs@gnu.org
X-Mailman-Version: 2.1.14
Precedence: list
List-Id: Users list for the GNU Emacs text editor <help-gnu-emacs.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/help-gnu-emacs>
List-Post: <mailto:help-gnu-emacs@gnu.org>
List-Help: <mailto:help-gnu-emacs-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=subscribe>
Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org
Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org
Xref: news.gmane.org gmane.emacs.help:86475
Archived-At: <http://permalink.gmane.org/gmane.emacs.help/86475>

>   1. Why does this restriction exists? Is it inevitable because of
>      some design decision of Emacs? Or is it temporary and removed in
>      a (near) future release?

It is because of a technical limitation in the byte-compiler's handling
of dynamically loaded docstrings.

You can work around this by replacing your defun
with (defalias counter (lambda () (setq x (1+ x)))).

I believe this is fixed in the Emacs trunk (where defun is just a macro
that expands to a defalias+lambda and where the docstrings handling was
improved accordingly).


        Stefan