From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail
From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: Criticism of jit-lock--antiblink-post-command
Date: Wed, 27 Nov 2019 06:45:46 +0200
Message-ID: <83sgmaq64l.fsf@gnu.org>
References: <20191126195236.GA5104@ACM> <jwv5zj61i0j.fsf-monnier+emacs@gnu.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=iso-8859-1
Content-Transfer-Encoding: 8bit
Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226";
	logging-data="167444"; mail-complaints-to="usenet@blaine.gmane.org"
Cc: acm@muc.de, joaotavora@gmail.com, emacs-devel@gnu.org
To: Stefan Monnier <monnier@iro.umontreal.ca>
Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Nov 27 05:53:30 2019
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 ([209.51.188.17])
	by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.89)
	(envelope-from <emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org>)
	id 1iZpKU-000hTM-B2
	for ged-emacs-devel@m.gmane.org; Wed, 27 Nov 2019 05:53:30 +0100
Original-Received: from localhost ([::1]:32956 helo=lists1p.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.90_1)
	(envelope-from <emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org>)
	id 1iZpKS-00071M-UF
	for ged-emacs-devel@m.gmane.org; Tue, 26 Nov 2019 23:53:29 -0500
Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:37641)
 by lists.gnu.org with esmtp (Exim 4.90_1)
 (envelope-from <eliz@gnu.org>) id 1iZpKB-0006m2-W2
 for emacs-devel@gnu.org; Tue, 26 Nov 2019 23:53:13 -0500
Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:42956)
 by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <eliz@gnu.org>)
 id 1iZpCs-0007mB-Rj; Tue, 26 Nov 2019 23:45:38 -0500
Original-Received: from [176.228.60.248] (port=1144 helo=home-c4e4a596f7)
 by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256)
 (Exim 4.82) (envelope-from <eliz@gnu.org>)
 id 1iZpCs-0002OV-5L; Tue, 26 Nov 2019 23:45:38 -0500
In-reply-to: <jwv5zj61i0j.fsf-monnier+emacs@gnu.org> (message from Stefan
 Monnier on Tue, 26 Nov 2019 15:51:04 -0500)
X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic]
X-BeenThere: emacs-devel@gnu.org
X-Mailman-Version: 2.1.23
Precedence: list
List-Id: "Emacs development discussions." <emacs-devel.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/emacs-devel>,
 <mailto:emacs-devel-request@gnu.org?subject=unsubscribe>
List-Archive: <https://lists.gnu.org/archive/html/emacs-devel>
List-Post: <mailto:emacs-devel@gnu.org>
List-Help: <mailto:emacs-devel-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/emacs-devel>,
 <mailto:emacs-devel-request@gnu.org?subject=subscribe>
Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org
Original-Sender: "Emacs-devel" <emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org>
Xref: news.gmane.org gmane.emacs.devel:242761
Archived-At: <http://permalink.gmane.org/gmane.emacs.devel/242761>

> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: João Távora <joaotavora@gmail.com>,  Eli
>  Zaretskii <eliz@gnu.org>,
>   emacs-devel@gnu.org
> Date: Tue, 26 Nov 2019 15:51:04 -0500
> 
> > These are good reasons for making antiblink easy to disable.
> 
> The intention is that when it's not useful it's harmless.
> IOW if there's a good reason to turn it off, it's probably a bug.

I don't think I agree.  A post-command-hook that is not useful just
takes CPU cycles, and likewise a timer which does nothing when its
function is invoked.

And in any case, a feature that changes behavior should have a knob to
disable it.