From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail
From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: What's the best (i.e. least bad) way to re-redisplay?
Date: Thu, 26 Aug 2021 09:37:14 +0300
Message-ID: <83r1egu2xx.fsf@gnu.org>
References: <YSPr9wCrrjxRAEqb@ACM>
 <jwvlf4qeahl.fsf-monnier+emacs@gnu.org> <YSajdMKgL3OQqzmV@ACM>
Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214";
	logging-data="6189"; mail-complaints-to="usenet@ciao.gmane.io"
Cc: monnier@iro.umontreal.ca, emacs-devel@gnu.org
To: Alan Mackenzie <acm@muc.de>
Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org Thu Aug 26 08:38:15 2021
Return-path: <emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org>
Envelope-to: ged-emacs-devel@m.gmane-mx.org
Original-Received: from lists.gnu.org ([209.51.188.17])
	by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
	(Exim 4.92)
	(envelope-from <emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org>)
	id 1mJ91h-0001Jy-6m
	for ged-emacs-devel@m.gmane-mx.org; Thu, 26 Aug 2021 08:38:13 +0200
Original-Received: from localhost ([::1]:45784 helo=lists1p.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.90_1)
	(envelope-from <emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org>)
	id 1mJ91f-0003VX-K1
	for ged-emacs-devel@m.gmane-mx.org; Thu, 26 Aug 2021 02:38:11 -0400
Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:50684)
 by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <eliz@gnu.org>) id 1mJ913-0002oq-FK
 for emacs-devel@gnu.org; Thu, 26 Aug 2021 02:37:33 -0400
Original-Received: from fencepost.gnu.org ([2001:470:142:3::e]:52352)
 by eggs.gnu.org with esmtp (Exim 4.90_1)
 (envelope-from <eliz@gnu.org>)
 id 1mJ911-0003hQ-OK; Thu, 26 Aug 2021 02:37:31 -0400
Original-Received: from 84.94.185.95.cable.012.net.il ([84.94.185.95]:4520
 helo=home-c4e4a596f7)
 by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)
 (Exim 4.90_1) (envelope-from <eliz@gnu.org>)
 id 1mJ911-0006Jj-G5; Thu, 26 Aug 2021 02:37:31 -0400
In-Reply-To: <YSajdMKgL3OQqzmV@ACM> (message from Alan Mackenzie on Wed, 25
 Aug 2021 20:09:24 +0000)
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-mx.org@gnu.org
Original-Sender: "Emacs-devel"
 <emacs-devel-bounces+ged-emacs-devel=m.gmane-mx.org@gnu.org>
Xref: news.gmane.io gmane.emacs.devel:273001
Archived-At: <http://permalink.gmane.org/gmane.emacs.devel/273001>

> Date: Wed, 25 Aug 2021 20:09:24 +0000
> From: Alan Mackenzie <acm@muc.de>
> Cc: emacs-devel@gnu.org
> 
> > I think something along the lines of
> 
> >     (run-with-timer 0 nil
> >                     (lambda (buf)
> >                       (with-current-buffer buf (font-lock-flush)))
> >                     (current-buffer))
> 
> > is the cleanest that comes to mind.
> 
> Thanks.  That's probably cleaner than a direct use of
> jit-lock-force-redisplay.

Why is it cleaner?  jit-lock and font-lock include provision for the
fontification function to tell jit-lock what was the region actually
fontified, and that will trigger a call to jit-lock-force-redisplay in
a timer.  Why not use an existing mechanism?