From mboxrd@z Thu Jan  1 00:00:00 1970
Path: main.gmane.org!not-for-mail
From: Richard Stallman <rms@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Idea for determining what users use
Date: Tue, 27 May 2003 08:45:20 -0400
Sender: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org
Message-ID: <E19KdpQ-00072R-Rf@fencepost.gnu.org>
Reply-To: rms@gnu.org
NNTP-Posting-Host: main.gmane.org
X-Trace: main.gmane.org 1054040267 10559 80.91.224.249 (27 May 2003 12:57:47 GMT)
X-Complaints-To: usenet@main.gmane.org
NNTP-Posting-Date: Tue, 27 May 2003 12:57:47 +0000 (UTC)
Original-X-From: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org Tue May 27 14:57:42 2003
Return-path: <emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org>
Original-Received: from quimby.gnus.org ([80.91.224.244])
	by main.gmane.org with esmtp (Exim 3.35 #1 (Debian))
	id 19Ke1O-0002jh-00
	for <emacs-devel@main.gmane.org>; Tue, 27 May 2003 14:57:42 +0200
Original-Received: from monty-python.gnu.org ([199.232.76.173])
	by quimby.gnus.org with esmtp (Exim 3.12 #1 (Debian))
	id 19KeF5-0000fC-00
	for <emacs-devel@quimby.gnus.org>; Tue, 27 May 2003 15:11:51 +0200
Original-Received: from localhost ([127.0.0.1] helo=monty-python.gnu.org)
	by monty-python.gnu.org with esmtp (Exim 4.20)
	id 19Kdso-00014t-Qn
	for emacs-devel@quimby.gnus.org; Tue, 27 May 2003 08:48:50 -0400
Original-Received: from list by monty-python.gnu.org with tmda-scanned (Exim 4.20)
	id 19KdsB-0000x8-Oj
	for emacs-devel@gnu.org; Tue, 27 May 2003 08:48:11 -0400
Original-Received: from mail by monty-python.gnu.org with spam-scanned (Exim 4.20)
	id 19KdrK-0000Uo-1c
	for emacs-devel@gnu.org; Tue, 27 May 2003 08:47:18 -0400
Original-Received: from fencepost.gnu.org ([199.232.76.164])
	by monty-python.gnu.org with esmtp (Exim 4.20)
	id 19KdpR-0008CE-1b
	for emacs-devel@gnu.org; Tue, 27 May 2003 08:45:21 -0400
Original-Received: from rms by fencepost.gnu.org with local (Exim 4.20)
	id 19KdpQ-00072R-Rf; Tue, 27 May 2003 08:45:20 -0400
Original-To: emacs-devel@gnu.org
X-BeenThere: emacs-devel@gnu.org
X-Mailman-Version: 2.1b5
Precedence: list
List-Id: Emacs development discussions. <emacs-devel.gnu.org>
List-Help: <mailto:emacs-devel-request@gnu.org?subject=help>
List-Post: <mailto:emacs-devel@gnu.org>
List-Subscribe: <http://mail.gnu.org/mailman/listinfo/emacs-devel>,
	<mailto:emacs-devel-request@gnu.org?subject=subscribe>
List-Archive: <http://mail.gnu.org/pipermail/emacs-devel>
List-Unsubscribe: <http://mail.gnu.org/mailman/listinfo/emacs-devel>,
	<mailto:emacs-devel-request@gnu.org?subject=unsubscribe>
Errors-To: emacs-devel-bounces+emacs-devel=quimby.gnus.org@gnu.org
Xref: main.gmane.org gmane.emacs.devel:14317
X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:14317

We have no good way to determine if anyone still uses a feature.
Maybe we can create one.

Imagine a function called note-feature-used.
You call it like this:  (note-feature-used 'foo "Foo").
The first time you call it, it sends mail to
emacs-features-used@gnu.org with subject Foo,
asking you for permission to send it,
and it records (setq foo t) in your .emacs file.
If you call it again, it does nothing.

We could put these calls into various files and functions 
in order to find out (after the next release) whether anyone uses them.