From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.org!not-for-mail
From: Richard Stallman <rms@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Qs on free variable occurrences
Date: Sun, 07 May 2006 01:00:52 -0400
Message-ID: <E1FcbO0-0002Tx-Lb@fencepost.gnu.org>
References: <DNEMKBNJBGPAOPIJOOICEELHDFAA.drew.adams@oracle.com>
Reply-To: rms@gnu.org
NNTP-Posting-Host: main.gmane.org
Content-Type: text/plain; charset=ISO-8859-15
X-Trace: sea.gmane.org 1146978082 32766 80.91.229.2 (7 May 2006 05:01:22 GMT)
X-Complaints-To: usenet@sea.gmane.org
NNTP-Posting-Date: Sun, 7 May 2006 05:01:22 +0000 (UTC)
Cc: emacs-devel@gnu.org
Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Sun May 07 07:01:20 2006
Return-path: <emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org>
Envelope-to: ged-emacs-devel@m.gmane.org
Original-Received: from lists.gnu.org ([199.232.76.165])
	by ciao.gmane.org with esmtp (Exim 4.43)
	id 1FcbOM-0002Mq-OF
	for ged-emacs-devel@m.gmane.org; Sun, 07 May 2006 07:01:15 +0200
Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43)
	id 1FcbOM-0006bv-DN
	for ged-emacs-devel@m.gmane.org; Sun, 07 May 2006 01:01:14 -0400
Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43)
	id 1FcbO2-0006Z1-PH
	for emacs-devel@gnu.org; Sun, 07 May 2006 01:00:54 -0400
Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43)
	id 1FcbO1-0006XY-U5
	for emacs-devel@gnu.org; Sun, 07 May 2006 01:00:54 -0400
Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.43) id 1FcbO1-0006XV-KF
	for emacs-devel@gnu.org; Sun, 07 May 2006 01:00:53 -0400
Original-Received: from [199.232.76.164] (helo=fencepost.gnu.org)
	by monty-python.gnu.org with esmtp (Exim 4.52) id 1FcbOY-0007HW-QP
	for emacs-devel@gnu.org; Sun, 07 May 2006 01:01:26 -0400
Original-Received: from rms by fencepost.gnu.org with local (Exim 4.34)
	id 1FcbO0-0002Tx-Lb; Sun, 07 May 2006 01:00:52 -0400
Original-To: "Drew Adams" <drew.adams@oracle.com>
In-reply-to: <DNEMKBNJBGPAOPIJOOICEELHDFAA.drew.adams@oracle.com>
X-BeenThere: emacs-devel@gnu.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: "Emacs development discussions." <emacs-devel.gnu.org>
List-Unsubscribe: <http://lists.gnu.org/mailman/listinfo/emacs-devel>,
	<mailto:emacs-devel-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/pipermail/emacs-devel>
List-Post: <mailto:emacs-devel@gnu.org>
List-Help: <mailto:emacs-devel-request@gnu.org?subject=help>
List-Subscribe: <http://lists.gnu.org/mailman/listinfo/emacs-devel>,
	<mailto:emacs-devel-request@gnu.org?subject=subscribe>
Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org
Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org
Xref: news.gmane.org gmane.emacs.devel:54022
Archived-At: <http://permalink.gmane.org/gmane.emacs.devel/54022>

	    4. Byte-compiling the file gives no warning of the variable
	       being used as a free variable (in #3 and #4).

	    This is not a criticism, but a couple of questions.

	    a. Why #4? Is it because the byte-compiler cannot detect these
	       as free occurrences of the variable or is it intentional
	       (TRT)? If the latter, what's the rationale?

It is because the variable has a definition elsewhere.
(In the C code.)

I will add a comment to say so.

	    b. Is this coding style considered good or bad? In particular,
	       should `minibuffer-history-position' be declared a global
	       variable by giving it a defvar?

If it weren't used in the C code, that's what we'd do.