GNU bug report logs - #13675
24.2.93; Extremely slow redisplay when lines are very long

Please note: This is a static page, with minimal formatting, updated once a day.
Click here to see this page with the latest information and nicer formatting.
Package: emacs; Reported by: Eli Zaretskii <eliz@HIDDEN>; merged with #3219, #4123, #9589, #15555, #18530, #24523, #30457, #40007; dated Sun, 10 Feb 2013 16:27:01 UTC; Maintainer for emacs is bug-gnu-emacs@HIDDEN.
Merged 3219 4123 9589 13675 15555 18530 24523 30457 40007. Request was from Eli Zaretskii <eliz@HIDDEN> to control <at> debbugs.gnu.org. Full text available.
Merged 3219 4123 9589 13675 15555 18530 24523 30457. Request was from Glenn Morris <rgm@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

Message received at 13675 <at> debbugs.gnu.org:


Received: (at 13675) by debbugs.gnu.org; 21 Oct 2017 02:03:42 +0000
From debbugs-submit-bounces <at> debbugs.gnu.org Fri Oct 20 22:03:42 2017
Received: from localhost ([127.0.0.1]:52943 helo=debbugs.gnu.org)
	by debbugs.gnu.org with esmtp (Exim 4.84_2)
	(envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>)
	id 1e5j8Y-0004RG-BN
	for submit <at> debbugs.gnu.org; Fri, 20 Oct 2017 22:03:42 -0400
Received: from smtp-2.orcon.net.nz ([60.234.4.43]:50642)
 by debbugs.gnu.org with esmtp (Exim 4.84_2)
 (envelope-from <psainty@HIDDEN>) id 1e5j8V-0004R6-J1
 for 13675 <at> debbugs.gnu.org; Fri, 20 Oct 2017 22:03:40 -0400
Received: from [150.107.172.27] (port=27777 helo=[192.168.20.102])
 by smtp-2.orcon.net.nz with esmtpa (Exim 4.86_2)
 (envelope-from <psainty@HIDDEN>)
 id 1e5j8K-0005FL-NU; Sat, 21 Oct 2017 15:03:33 +1300
Subject: Re: bug#13675: Extremely slow redisplay when lines are very long
From: Phil Sainty <psainty@HIDDEN>
To: Eli Zaretskii <eliz@HIDDEN>, Mark Diekhans <markd@HIDDEN>
References: <83sj545e55.fsf@HIDDEN>
 <23017.21788.768005.940877@HIDDEN>
 <831slye2sx.fsf@HIDDEN> <1d241e49-61bc-089c-ce02-2075a4e98905@HIDDEN>
Message-ID: <21c26b38-0d14-3600-a80d-ddd95f41cc09@HIDDEN>
Date: Sat, 21 Oct 2017 15:03:28 +1300
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101
 Thunderbird/52.4.0
MIME-Version: 1.0
In-Reply-To: <1d241e49-61bc-089c-ce02-2075a4e98905@HIDDEN>
Content-Type: text/plain; charset=utf-8
Content-Language: en-GB
Content-Transfer-Encoding: 7bit
X-GeoIP: NZ
X-Spam_score: -2.9
X-Spam_score_int: -28
X-Spam_bar: --
X-Spam-Score: -0.7 (/)
X-Debbugs-Envelope-To: 13675
Cc: 13675 <at> debbugs.gnu.org
X-BeenThere: debbugs-submit <at> debbugs.gnu.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: <debbugs-submit.debbugs.gnu.org>
List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe>
List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/>
List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org>
List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help>
List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe>
Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org
Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>
X-Spam-Score: -0.7 (/)

On 21/10/17 00:57, Phil Sainty wrote:
> FWIW I wrote https://savannah.nongnu.org/projects/so-long which
> tries to avoid performance issues in buffers with unexpectedly
> long lines by automatically changing the major mode and disabling
> various minor modes for that buffer

I wrote a more detailed overview at:
https://lists.gnu.org/archive/html/emacs-devel/2016-07/msg00742.html

That was preparation for adding so-long.el to GNU ELPA -- before I
came to the realisation that the scenarios which affected me had all
been caused by third-party libraries, and that the most notable
issue had already been fixed upstream by the library's author.

At this point I worried that I was severely over-stating the benefits
of my code, as I no longer had a good example of my library improving
things by a significant margin, and in particular could not find a
scenario using only default Emacs libraries.  I think this was the
main reason why I didn't proceed with adding so-long to ELPA at the
time.

I do think it might still be worth adding to ELPA, but a good example
of it being useful would be really helpful.

As such, if anyone is reading this, tries out so-long.el, and finds
that it does indeed help them (with or without configuration), please
drop me a line with some details?


thanks,
-Phil
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#13675; Package emacs. Full text available.

Message received at 13675 <at> debbugs.gnu.org:


Received: (at 13675) by debbugs.gnu.org; 20 Oct 2017 16:10:51 +0000
From debbugs-submit-bounces <at> debbugs.gnu.org Fri Oct 20 12:10:51 2017
Received: from localhost ([127.0.0.1]:52616 helo=debbugs.gnu.org)
	by debbugs.gnu.org with esmtp (Exim 4.84_2)
	(envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>)
	id 1e5Zsp-0008MU-AH
	for submit <at> debbugs.gnu.org; Fri, 20 Oct 2017 12:10:51 -0400
Received: from eggs.gnu.org ([208.118.235.92]:56978)
 by debbugs.gnu.org with esmtp (Exim 4.84_2)
 (envelope-from <eliz@HIDDEN>) id 1e5Zsn-0008MF-Px
 for 13675 <at> debbugs.gnu.org; Fri, 20 Oct 2017 12:10:50 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
 (envelope-from <eliz@HIDDEN>) id 1e5Zse-00014H-Nh
 for 13675 <at> debbugs.gnu.org; Fri, 20 Oct 2017 12:10:44 -0400
X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org
X-Spam-Level: 
X-Spam-Status: No, score=-0.5 required=5.0 tests=BAYES_05,RP_MATCHES_RCVD
 autolearn=disabled version=3.3.2
Received: from fencepost.gnu.org ([2001:4830:134:3::e]:37905)
 by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <eliz@HIDDEN>)
 id 1e5Zse-00014C-Jh; Fri, 20 Oct 2017 12:10:40 -0400
Received: from [176.228.60.248] (port=2910 helo=home-c4e4a596f7)
 by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256)
 (Exim 4.82) (envelope-from <eliz@HIDDEN>)
 id 1e5Zse-0004tM-1n; Fri, 20 Oct 2017 12:10:40 -0400
Date: Fri, 20 Oct 2017 19:10:32 +0300
Message-Id: <83bml1dclj.fsf@HIDDEN>
From: Eli Zaretskii <eliz@HIDDEN>
To: Mark Diekhans <markd@HIDDEN>
In-reply-to: <23018.6971.899464.78569@HIDDEN> (message from Mark
 Diekhans on Fri, 20 Oct 2017 08:50:19 -0700)
Subject: Re: bug#13675: Extremely slow redisplay when lines are very long
References: <83sj545e55.fsf@HIDDEN>
 <23017.21788.768005.940877@HIDDEN>
 <831slye2sx.fsf@HIDDEN> <23018.6971.899464.78569@HIDDEN>
X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic]
X-Received-From: 2001:4830:134:3::e
X-Spam-Score: -5.0 (-----)
X-Debbugs-Envelope-To: 13675
Cc: 13675 <at> debbugs.gnu.org
X-BeenThere: debbugs-submit <at> debbugs.gnu.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: <debbugs-submit.debbugs.gnu.org>
List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe>
List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/>
List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org>
List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help>
List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe>
Reply-To: Eli Zaretskii <eliz@HIDDEN>
Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org
Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>
X-Spam-Score: -5.0 (-----)

> Date: Fri, 20 Oct 2017 08:50:19 -0700
> Cc: 13675 <at> debbugs.gnu.org
> From: Mark Diekhans <markd@HIDDEN>
> 
> I would be gladly work on a patch to ask a question or stop on
> files that might cripple emacs.
> 
> However, before one dives into work, it's important to know the
> history and if there is existing work one can help with as opposed
> to start fresh.  That leads to annoying questions like mine.
> 
> The meta issue is not a user wanting something for nothing.
> It's that it's a lot of work for someone who is not a core
> developer to come up to speed on an issue since the discussions
> are not linked to bug reports and the mailing lists are very
> hard to search.

I don't think you have anything to fear, because AFAIR this particular
approach was never suggested or discussed.

So I'd start with a feature that read the first N bytes from the file,
and if no newlines were found in those N bytes, pop up the warning and
the question.  A good place for this would be inside
insert-file-contents, which is where Emacs reads files into memory.

Let me know if I can help you further with making this happen.

Thanks.
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#13675; Package emacs. Full text available.

Message received at 13675 <at> debbugs.gnu.org:


Received: (at 13675) by debbugs.gnu.org; 20 Oct 2017 15:50:32 +0000
From debbugs-submit-bounces <at> debbugs.gnu.org Fri Oct 20 11:50:32 2017
Received: from localhost ([127.0.0.1]:52545 helo=debbugs.gnu.org)
	by debbugs.gnu.org with esmtp (Exim 4.84_2)
	(envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>)
	id 1e5ZZA-0007jy-Ed
	for submit <at> debbugs.gnu.org; Fri, 20 Oct 2017 11:50:32 -0400
Received: from mail-pf0-f175.google.com ([209.85.192.175]:51880)
 by debbugs.gnu.org with esmtp (Exim 4.84_2)
 (envelope-from <markd@HIDDEN>) id 1e5ZZ8-0007ji-Jm
 for 13675 <at> debbugs.gnu.org; Fri, 20 Oct 2017 11:50:31 -0400
Received: by mail-pf0-f175.google.com with SMTP id n14so11611739pfh.8
 for <13675 <at> debbugs.gnu.org>; Fri, 20 Oct 2017 08:50:30 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=soe-ucsc-edu.20150623.gappssmtp.com; s=20150623;
 h=mime-version:content-transfer-encoding:message-id:date:to:cc
 :subject:in-reply-to:references:from;
 bh=+QRmbp6j8djtkIYwkkDinYs0fMbwOsnAlu/Qo4ZdH2E=;
 b=nmcb70LIv9AHrw+38kbdTFrWU+BeG5h43HhcpCSZMOgYuJGg0aRm8vWJ/t6UKpbsRJ
 P0LwO1IOKymKNAIsVO/D4nT9ruYlPwRKLPDQAc0DKWHaarK+4vOrrkegXFTqGsZ3yfCq
 8oQTv5pDOnUA0+b7cKXXLIEFGh/yzFdwOI5fCT5WYtI5rn0s7Vs3yTu5w4+kfkmqc/T3
 3EgvjG4s+QC4403MZxPU9pRgbKSEIctd1vwKn0b9yg4+FLcUevxJPBgfjGnCKqZwy7t2
 18tfVGvHqSW/63RKV+w0Y06Dcsst5bYZJ9ldiMfnPFo2C/5nja+L/clbe/gCCCB7QzeR
 Kahg==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=1e100.net; s=20161025;
 h=x-gm-message-state:mime-version:content-transfer-encoding
 :message-id:date:to:cc:subject:in-reply-to:references:from;
 bh=+QRmbp6j8djtkIYwkkDinYs0fMbwOsnAlu/Qo4ZdH2E=;
 b=BnC1eyFatnsocGdEwKzg3/muK/0kcWlAhAMgAiwvcB5fEVnx4NLkKVcvbvic65J/94
 hAISzocOQ75SL7bZclLLrgq8OxuAJyWHZa2SM3RBtu8YiY74hgmYvueMjK6kHA7Cht9c
 huWUlQnjwaNx70uhuTs9V0Fj9xLfDervN9zp4ekZjLlpllA97ZHTOB4mbs+Wk72Bx3mp
 kyFFp4cYgubI/5g/zKJXbap+iOd+r69Y+fuYelMKESt9S/lAjjBoxr/JNfcJLg7jjNMM
 P/yBUqvurwM2iBjfB1tSu+4BXFYxYAuYEexM+vtanpEZQibtEFgb5ACYggxY9Ms6YLkN
 2FVg==
X-Gm-Message-State: AMCzsaX5pM44V+JBDEKYte+2qU3Hnyflcjpv0bJ++JBn8I+yhObq9KU8
 6vL3jCdhed6Hjq/EBNdo66UXAQ==
X-Google-Smtp-Source: ABhQp+R2SGbkdyw4azK8kdvR55MfSZ6em9MWFclYMsfWplkZaml3xPx25RQ/zkn/TNyFWDXswWxvXQ==
X-Received: by 10.84.128.97 with SMTP id 88mr703038pla.161.1508514624442;
 Fri, 20 Oct 2017 08:50:24 -0700 (PDT)
Received: from localhost ([2601:647:c803:2f30:420:ec7a:c1cb:371f])
 by smtp.gmail.com with ESMTPSA id l1sm2220379pff.77.2017.10.20.08.50.20
 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256);
 Fri, 20 Oct 2017 08:50:22 -0700 (PDT)
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Message-ID: <23018.6971.899464.78569@HIDDEN>
Date: Fri, 20 Oct 2017 08:50:19 -0700
To: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#13675: Extremely slow redisplay when lines are very long
In-Reply-To: <831slye2sx.fsf@HIDDEN>
References: <83sj545e55.fsf@HIDDEN>
 <23017.21788.768005.940877@HIDDEN>
 <831slye2sx.fsf@HIDDEN>
X-Mailer: VM 8.2.0b under 25.2.1 (x86_64-apple-darwin16.4.0)
From: Mark Diekhans <markd@HIDDEN>
BCC: Mark Diekhans <markd@HIDDEN>,
X-Spam-Score: -2.8 (--)
X-Debbugs-Envelope-To: 13675
Cc: 13675 <at> debbugs.gnu.org
X-BeenThere: debbugs-submit <at> debbugs.gnu.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: <debbugs-submit.debbugs.gnu.org>
List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe>
List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/>
List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org>
List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help>
List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe>
Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org
Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>
X-Spam-Score: -2.8 (--)


Hi Eli,

The issue really isn't needed to edit these kind of files, so
much as not locking up emacs when one doesn't know a file has really
long lines.  In the past week, it's been an sql file that had
long insert commands and a large json file create without line
breaks.  Both of these modes have font lock mode by default.

I would be gladly work on a patch to ask a question or stop on
files that might cripple emacs.

However, before one dives into work, it's important to know the
history and if there is existing work one can help with as opposed
to start fresh.  That leads to annoying questions like mine.

The meta issue is not a user wanting something for nothing.
It's that it's a lot of work for someone who is not a core
developer to come up to speed on an issue since the discussions
are not linked to bug reports and the mailing lists are very
hard to search.

Mark



Eli Zaretskii <eliz@HIDDEN> writes:
> > From: Mark Diekhans <markd@HIDDEN>
> > Date: Thu, 19 Oct 2017 18:45:00 -0700
> > 
> > Is there anyone working on the long-line display speed issue?
> 
> Not that I know of.  I don't even have an idea for how to speed it up,
> and I don't think anyone's come up with such ideas.
> 
> > It is especially bad with font lock mode.
> 
> What mode/kind of file needs font lock and has such long lines?
> 
> In general, if you must handle such files, my advice is to use M-x
> find-file-literally for them, it might make Emacs just barely
> bearable, if you are lucky.  But then you lose any font locking and
> text encoding support, so this is only feasible for plain-ASCII files
> that basically present some text.
> 
> > If the fix is really complex, it would be much better emacs
> > refuse to display the file than force killing it.
> 
> Patches for presenting a warning for such files, like we do with very
> large files, are welcome.
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#13675; Package emacs. Full text available.

Message received at 13675 <at> debbugs.gnu.org:


Received: (at 13675) by debbugs.gnu.org; 20 Oct 2017 11:58:03 +0000
From debbugs-submit-bounces <at> debbugs.gnu.org Fri Oct 20 07:58:02 2017
Received: from localhost ([127.0.0.1]:51210 helo=debbugs.gnu.org)
	by debbugs.gnu.org with esmtp (Exim 4.84_2)
	(envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>)
	id 1e5VwA-0001SN-4j
	for submit <at> debbugs.gnu.org; Fri, 20 Oct 2017 07:58:02 -0400
Received: from smtp-4.orcon.net.nz ([60.234.4.59]:53859)
 by debbugs.gnu.org with esmtp (Exim 4.84_2)
 (envelope-from <psainty@HIDDEN>) id 1e5Vw7-0001SA-UA
 for 13675 <at> debbugs.gnu.org; Fri, 20 Oct 2017 07:58:00 -0400
Received: from [150.107.172.80] (port=27474 helo=[192.168.20.102])
 by smtp-4.orcon.net.nz with esmtpa (Exim 4.86_2)
 (envelope-from <psainty@HIDDEN>)
 id 1e5Vvs-0006iX-7Z; Sat, 21 Oct 2017 00:57:54 +1300
Subject: Re: bug#13675: Extremely slow redisplay when lines are very long
To: Eli Zaretskii <eliz@HIDDEN>, Mark Diekhans <markd@HIDDEN>
References: <83sj545e55.fsf@HIDDEN>
 <23017.21788.768005.940877@HIDDEN>
 <831slye2sx.fsf@HIDDEN>
From: Phil Sainty <psainty@HIDDEN>
Message-ID: <1d241e49-61bc-089c-ce02-2075a4e98905@HIDDEN>
Date: Sat, 21 Oct 2017 00:57:43 +1300
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101
 Thunderbird/52.4.0
MIME-Version: 1.0
In-Reply-To: <831slye2sx.fsf@HIDDEN>
Content-Type: text/plain; charset=utf-8
Content-Language: en-GB
Content-Transfer-Encoding: 7bit
X-GeoIP: NZ
X-Spam_score: -2.9
X-Spam_score_int: -28
X-Spam_bar: --
X-Spam-Score: -0.7 (/)
X-Debbugs-Envelope-To: 13675
Cc: 13675 <at> debbugs.gnu.org
X-BeenThere: debbugs-submit <at> debbugs.gnu.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: <debbugs-submit.debbugs.gnu.org>
List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe>
List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/>
List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org>
List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help>
List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe>
Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org
Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>
X-Spam-Score: -0.7 (/)

On 20/10/17 19:44, Eli Zaretskii wrote:
> What mode/kind of file needs font lock and has such long lines?

The common cases I would run into were with 'minified' files of
programming code, where as much whitespace as possible has been
removed to reduce the file size.

e.g. Things like https://code.jquery.com/jquery-git.min.js

That kind of file is not intended to be edited by hand, but so
far as Emacs is concerned it's just a regular javascript file,
and therefore font-lock and all the other modes which would be
enabled for editing javascript will be used.


> Patches for presenting a warning for such files, like we do with
> very large files, are welcome.

FWIW I wrote https://savannah.nongnu.org/projects/so-long which
tries to avoid performance issues in buffers with unexpectedly
long lines by automatically changing the major mode and disabling
various minor modes for that buffer (based on a pre-configured
list).

It can only address certain classes of problem, mind, and it
needs some more work (and has been waiting for me to get back
to it); but it more or less does what it's intended to do, so
others might find it useful as-is (I certainly use it myself).

See https://www.emacswiki.org/emacs/SoLong for more information.


-Phil
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#13675; Package emacs. Full text available.

Message received at 13675 <at> debbugs.gnu.org:


Received: (at 13675) by debbugs.gnu.org; 20 Oct 2017 06:44:52 +0000
From debbugs-submit-bounces <at> debbugs.gnu.org Fri Oct 20 02:44:52 2017
Received: from localhost ([127.0.0.1]:51004 helo=debbugs.gnu.org)
	by debbugs.gnu.org with esmtp (Exim 4.84_2)
	(envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>)
	id 1e5R36-0008Ny-Jt
	for submit <at> debbugs.gnu.org; Fri, 20 Oct 2017 02:44:52 -0400
Received: from eggs.gnu.org ([208.118.235.92]:35642)
 by debbugs.gnu.org with esmtp (Exim 4.84_2)
 (envelope-from <eliz@HIDDEN>) id 1e5R34-0008Nl-IL
 for 13675 <at> debbugs.gnu.org; Fri, 20 Oct 2017 02:44:51 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
 (envelope-from <eliz@HIDDEN>) id 1e5R2u-0005TP-Fe
 for 13675 <at> debbugs.gnu.org; Fri, 20 Oct 2017 02:44:45 -0400
X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org
X-Spam-Level: 
X-Spam-Status: No, score=-0.0 required=5.0 tests=BAYES_20,RP_MATCHES_RCVD
 autolearn=disabled version=3.3.2
Received: from fencepost.gnu.org ([2001:4830:134:3::e]:47720)
 by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <eliz@HIDDEN>)
 id 1e5R2u-0005TI-By; Fri, 20 Oct 2017 02:44:40 -0400
Received: from [176.228.60.248] (port=1810 helo=home-c4e4a596f7)
 by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256)
 (Exim 4.82) (envelope-from <eliz@HIDDEN>)
 id 1e5R2t-0000Vr-Pw; Fri, 20 Oct 2017 02:44:40 -0400
Date: Fri, 20 Oct 2017 09:44:30 +0300
Message-Id: <831slye2sx.fsf@HIDDEN>
From: Eli Zaretskii <eliz@HIDDEN>
To: Mark Diekhans <markd@HIDDEN>
In-reply-to: <23017.21788.768005.940877@HIDDEN>
 (message from Mark Diekhans on Thu, 19 Oct 2017 18:45:00 -0700)
Subject: Re: bug#13675: Extremely slow redisplay when lines are very long
References: <83sj545e55.fsf@HIDDEN>
 <23017.21788.768005.940877@HIDDEN>
X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic]
X-Received-From: 2001:4830:134:3::e
X-Spam-Score: -5.0 (-----)
X-Debbugs-Envelope-To: 13675
Cc: 13675 <at> debbugs.gnu.org
X-BeenThere: debbugs-submit <at> debbugs.gnu.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: <debbugs-submit.debbugs.gnu.org>
List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe>
List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/>
List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org>
List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help>
List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe>
Reply-To: Eli Zaretskii <eliz@HIDDEN>
Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org
Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>
X-Spam-Score: -5.0 (-----)

> From: Mark Diekhans <markd@HIDDEN>
> Date: Thu, 19 Oct 2017 18:45:00 -0700
> 
> Is there anyone working on the long-line display speed issue?

Not that I know of.  I don't even have an idea for how to speed it up,
and I don't think anyone's come up with such ideas.

> It is especially bad with font lock mode.

What mode/kind of file needs font lock and has such long lines?

In general, if you must handle such files, my advice is to use M-x
find-file-literally for them, it might make Emacs just barely
bearable, if you are lucky.  But then you lose any font locking and
text encoding support, so this is only feasible for plain-ASCII files
that basically present some text.

> If the fix is really complex, it would be much better emacs
> refuse to display the file than force killing it.

Patches for presenting a warning for such files, like we do with very
large files, are welcome.
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#13675; Package emacs. Full text available.

Message received at 13675 <at> debbugs.gnu.org:


Received: (at 13675) by debbugs.gnu.org; 20 Oct 2017 01:45:11 +0000
From debbugs-submit-bounces <at> debbugs.gnu.org Thu Oct 19 21:45:11 2017
Received: from localhost ([127.0.0.1]:50901 helo=debbugs.gnu.org)
	by debbugs.gnu.org with esmtp (Exim 4.84_2)
	(envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>)
	id 1e5MN4-0000gJ-S9
	for submit <at> debbugs.gnu.org; Thu, 19 Oct 2017 21:45:11 -0400
Received: from mail-pf0-f179.google.com ([209.85.192.179]:51766)
 by debbugs.gnu.org with esmtp (Exim 4.84_2)
 (envelope-from <markd@HIDDEN>) id 1e5MN3-0000g7-Ek
 for 13675 <at> debbugs.gnu.org; Thu, 19 Oct 2017 21:45:09 -0400
Received: by mail-pf0-f179.google.com with SMTP id n14so8674012pfh.8
 for <13675 <at> debbugs.gnu.org>; Thu, 19 Oct 2017 18:45:09 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=soe-ucsc-edu.20150623.gappssmtp.com; s=20150623;
 h=from:mime-version:content-transfer-encoding:message-id:date:to
 :subject; bh=50XnbAupFbqw6zuJUkR58mNjkSecQt2G+90hGkuw8nM=;
 b=al1qpc69p5ajXMBj6cMfIE032Rp4GBHYuwOv6T9U4JPRcFoIAdTvUbatOqiv5cSk0g
 2cEZDFX4V/wNO/JODXR3tM/8UoWC7Fj3uDfU54VTbTOW1KJBn2fxHbZW9LPXXbf1Sy0J
 1cfW+ckSyR/EQoYXadlGHZeswDuMRdxqmAYF39suu5AOf/2ompcWZX7zdCP+mGHU2xhT
 5kQrLInVES+cEBLKOli9WepO37Lbmxix9WVb59JekSWGonFjh7VL+0han5nxuiqpwIti
 iAM2r7E3Bxriir/TUFji171FB7fBrqmLwnEQreUVRTszFOmQOko/YVSGHPxc1bhweOlN
 ciKg==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=1e100.net; s=20161025;
 h=x-gm-message-state:from:mime-version:content-transfer-encoding
 :message-id:date:to:subject;
 bh=50XnbAupFbqw6zuJUkR58mNjkSecQt2G+90hGkuw8nM=;
 b=sEseIJwJbj0qaeeGw6bg9UeL/n+MFJGPJIrp+YmCzvw4UlJL81tgaBQB1QXq1ndfsu
 wZh+nSdpKJkF5PdlV+K0dlllUclXRs/sRpz3FulWtlMIloAP9faIlTHXgtayLLPJgpGy
 7HVMcwqD+FcoUwPVQru8EdI/MZVWhK5Qc8Oi6fdXLmX93eDYAFXFETdixlI0ZApu9Pz/
 iR7QwN6Vd6MB9VV/9J/yt3dWfZNDz0KtUeScmo7l+DPs5nlUnMiWCrVOVuY9c8JMcRnA
 bAo2HogOs5SeDuccECUb+qrbfuqx2IGyL/ma2Oy6uhBvc0nMQcnlShgh8fB1mGwMd0v1
 hojg==
X-Gm-Message-State: AMCzsaW1QawQxMy2BlYz99zmtZMhqnUfORphBf/EmTvasGqM8LjbU8gd
 JZ0EbDfWM4Mn1MN1UH2Vxv2o7Z5i
X-Google-Smtp-Source: ABhQp+Qa8L2jzfI8oZQLBNzRPDF61xhjLYN1JU69mzaE0G94/py0RDXQ+04c5pp8dTy84s79M49OPQ==
X-Received: by 10.101.74.4 with SMTP id s4mr2916469pgq.259.1508463902703;
 Thu, 19 Oct 2017 18:45:02 -0700 (PDT)
Received: from localhost (eduroam-169-233-201-230.ucsc.edu. [169.233.201.230])
 by smtp.gmail.com with ESMTPSA id
 h1sm26308948pgf.54.2017.10.19.18.45.01 for <13675 <at> debbugs.gnu.org>
 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256);
 Thu, 19 Oct 2017 18:45:01 -0700 (PDT)
From: Mark Diekhans <markd@HIDDEN>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Message-ID: <23017.21788.768005.940877@HIDDEN>
Date: Thu, 19 Oct 2017 18:45:00 -0700
To: 13675 <at> debbugs.gnu.org
Subject: re: Extremely slow redisplay when lines are very long
X-Mailer: VM 8.2.0b under 25.2.1 (x86_64-apple-darwin16.4.0)
X-Spam-Score: -2.8 (--)
X-Debbugs-Envelope-To: 13675
X-BeenThere: debbugs-submit <at> debbugs.gnu.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: <debbugs-submit.debbugs.gnu.org>
List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe>
List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/>
List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org>
List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help>
List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, 
 <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe>
Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org
Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org>
X-Spam-Score: -2.8 (--)


Is there anyone working on the long-line display speed issue?

It is especially bad with font lock mode.  SIGUSR2 doesn't help.
Twice in the last week I have had to kill emacs because it had
been locked up for more than 10 minutes.

If the fix is really complex, it would be much better emacs
refuse to display the file than force killing it.

thanks!!
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#13675; Package emacs. Full text available.
Merged 3219 4123 9589 13675 15555 18530 24523. Request was from Eli Zaretskii <eliz@HIDDEN> to control <at> debbugs.gnu.org. Full text available.
Merged 3219 4123 9589 13675 15555 18530. Request was from Glenn Morris <rgm@HIDDEN> to control <at> debbugs.gnu.org. Full text available.
Disconnected #16786 from all other report(s). Request was from Glenn Morris <rgm@HIDDEN> to control <at> debbugs.gnu.org. Full text available.
Merged 3219 4123 9589 13675 15555 16786. Request was from Glenn Morris <rgm@HIDDEN> to control <at> debbugs.gnu.org. Full text available.
Merged 3219 4123 9589 13675 15555. Request was from Glenn Morris <rgm@HIDDEN> to control <at> debbugs.gnu.org. Full text available.
Merged 3219 4123 9589 13675. Request was from Glenn Morris <rgm@HIDDEN> to control <at> debbugs.gnu.org. Full text available.

Message received at 13675 <at> debbugs.gnu.org:


Received: (at 13675) by debbugs.gnu.org; 10 Feb 2013 17:36:48 +0000
From debbugs-submit-bounces <at> debbugs.gnu.org Sun Feb 10 12:36:48 2013
Received: from localhost ([127.0.0.1]:49283 helo=debbugs.gnu.org)
	by debbugs.gnu.org with esmtp (Exim 4.72)
	(envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>)
	id 1U4apb-0008Em-Ji
	for submit <at> debbugs.gnu.org; Sun, 10 Feb 2013 12:36:48 -0500
Received: from mtaout23.012.net.il ([80.179.55.175]:43318)
	by debbugs.gnu.org with esmtp (Exim 4.72)
	(envelope-from <eliz@HIDDEN>) id 1U4apX-0008EY-Dr
	for 13675 <at> debbugs.gnu.org; Sun, 10 Feb 2013 12:36:46 -0500
Received: from conversion-daemon.a-mtaout23.012.net.il by
	a-mtaout23.012.net.il (HyperSendmail v2007.08) id
	<0MI000200M61X300@HIDDEN> for
	13675 <at> debbugs.gnu.org; Sun, 10 Feb 2013 19:36:25 +0200 (IST)
Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout23.012.net.il
	(HyperSendmail v2007.08) with ESMTPA id
	<0MI0002SYM8OSA60@HIDDEN>;
	Sun, 10 Feb 2013 19:36:25 +0200 (IST)
Date: Sun, 10 Feb 2013 19:36:30 +0200
From: Eli Zaretskii <eliz@HIDDEN>
Subject: Re: bug#13675: 24.2.93;
	Extremely slow redisplay when lines are very long
In-reply-to: <83sj545e55.fsf@HIDDEN>
X-012-Sender: halo1@HIDDEN
To: Eli Zaretskii <eliz@HIDDEN>
Message-id: <83pq085aw1.fsf@HIDDEN>
References: <83sj545e55.fsf@HIDDEN>
X-Spam-Score: 0.7 (/)
X-Debbugs-Envelope-To: 13675
Cc: 13675 <at> debbugs.gnu.org
X-BeenThere: debbugs-submit <at> debbugs.gnu.org
X-Mailman-Version: 2.1.13
Precedence: list
Reply-To: Eli Zaretskii <eliz@HIDDEN>
List-Id: <debbugs-submit.debbugs.gnu.org>
List-Unsubscribe: <http://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>,
	<mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe>
List-Archive: <http://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit>
List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org>
List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help>
List-Subscribe: <http://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>,
	<mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe>
Sender: debbugs-submit-bounces <at> debbugs.gnu.org
Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org
X-Spam-Score: 0.2 (/)

> Date: Sun, 10 Feb 2013 18:26:14 +0200
> From: Eli Zaretskii <eliz@HIDDEN>
> 
> This is a very long-standing deficiency of the Emacs display engine:
> it is awfully slow in buffers with very long (thousands of characters)
> lines.  Specifically, many simple movement commands, scrolling, or
> even typing "M-x" can take several seconds(!) to complete.
> 
> A simple Awk script attached below can be used to generate such files.
> 
> For the latest discussions of this and some data, see this thread:
> 
>   http://lists.gnu.org/archive/html/emacs-devel/2013-02/msg00135.html
> 
> The solution for this bug should produce algorithmic changes in the
> display engine and possibly also supporting changes in data structures
> that would prevent such a terrible slow-down with long lines.
> Ideally, redisplay of such buffers should not be much slower than
> buffers with "normal" line length.

Revision 111724 speeds up some of the redisplay operations by a factor
of 3.
Information forwarded to bug-gnu-emacs@HIDDEN:
bug#13675; Package emacs. Full text available.

Message received at submit <at> debbugs.gnu.org:


Received: (at submit) by debbugs.gnu.org; 10 Feb 2013 16:26:42 +0000
From debbugs-submit-bounces <at> debbugs.gnu.org Sun Feb 10 11:26:42 2013
Received: from localhost ([127.0.0.1]:49210 helo=debbugs.gnu.org)
	by debbugs.gnu.org with esmtp (Exim 4.72)
	(envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>)
	id 1U4Zjj-0006Yc-Gs
	for submit <at> debbugs.gnu.org; Sun, 10 Feb 2013 11:26:40 -0500
Received: from eggs.gnu.org ([208.118.235.92]:51234)
	by debbugs.gnu.org with esmtp (Exim 4.72)
	(envelope-from <eliz@HIDDEN>) id 1U4Zje-0006YP-8w
	for submit <at> debbugs.gnu.org; Sun, 10 Feb 2013 11:26:36 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <eliz@HIDDEN>) id 1U4ZjN-00039B-AC
	for submit <at> debbugs.gnu.org; Sun, 10 Feb 2013 11:26:19 -0500
X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on eggs.gnu.org
X-Spam-Level: 
X-Spam-Status: No, score=-101.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE,
	USER_IN_WHITELIST autolearn=unavailable version=3.3.2
Received: from lists.gnu.org ([208.118.235.17]:48260)
	by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <eliz@HIDDEN>)
	id 1U4ZjN-000397-6c
	for submit <at> debbugs.gnu.org; Sun, 10 Feb 2013 11:26:17 -0500
Received: from eggs.gnu.org ([208.118.235.92]:34344)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <eliz@HIDDEN>) id 1U4ZjK-000699-NK
	for bug-gnu-emacs@HIDDEN; Sun, 10 Feb 2013 11:26:17 -0500
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <eliz@HIDDEN>) id 1U4ZjI-00036w-He
	for bug-gnu-emacs@HIDDEN; Sun, 10 Feb 2013 11:26:14 -0500
Received: from mtaout20.012.net.il ([80.179.55.166]:41442)
	by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from <eliz@HIDDEN>)
	id 1U4ZjI-00036U-4J
	for bug-gnu-emacs@HIDDEN; Sun, 10 Feb 2013 11:26:12 -0500
Received: from conversion-daemon.a-mtaout20.012.net.il by
	a-mtaout20.012.net.il (HyperSendmail v2007.08) id
	<0MI000400IXMVQ00@HIDDEN> for
	bug-gnu-emacs@HIDDEN; Sun, 10 Feb 2013 18:26:09 +0200 (IST)
Received: from HOME-C4E4A596F7 ([87.69.4.28]) by a-mtaout20.012.net.il
	(HyperSendmail v2007.08) with ESMTPA id
	<0MI000427IZLOM60@HIDDEN> for
	bug-gnu-emacs@HIDDEN; Sun, 10 Feb 2013 18:26:09 +0200 (IST)
Date: Sun, 10 Feb 2013 18:26:14 +0200
From: Eli Zaretskii <eliz@HIDDEN>
Subject: 24.2.93; Extremely slow redisplay when lines are very long
X-012-Sender: halo1@HIDDEN
To: bug-gnu-emacs@HIDDEN
Message-id: <83sj545e55.fsf@HIDDEN>
X-detected-operating-system: by eggs.gnu.org: Solaris 10
X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x
X-Received-From: 208.118.235.17
X-Spam-Score: -6.9 (------)
X-Debbugs-Envelope-To: submit
X-BeenThere: debbugs-submit <at> debbugs.gnu.org
X-Mailman-Version: 2.1.13
Precedence: list
Reply-To: Eli Zaretskii <eliz@HIDDEN>
List-Id: <debbugs-submit.debbugs.gnu.org>
List-Unsubscribe: <http://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>,
	<mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe>
List-Archive: <http://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit>
List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org>
List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help>
List-Subscribe: <http://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>,
	<mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe>
Sender: debbugs-submit-bounces <at> debbugs.gnu.org
Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org
X-Spam-Score: -6.9 (------)

This is a very long-standing deficiency of the Emacs display engine:
it is awfully slow in buffers with very long (thousands of characters)
lines.  Specifically, many simple movement commands, scrolling, or
even typing "M-x" can take several seconds(!) to complete.

A simple Awk script attached below can be used to generate such files.

For the latest discussions of this and some data, see this thread:

  http://lists.gnu.org/archive/html/emacs-devel/2013-02/msg00135.html

The solution for this bug should produce algorithmic changes in the
display engine and possibly also supporting changes in data structures
that would prevent such a terrible slow-down with long lines.
Ideally, redisplay of such buffers should not be much slower than
buffers with "normal" line length.

Here's a script that can be used to produce test files for this bug:

---------------------------------------------
BEGIN {
    # 500 lines
    for (i = 1; i <= 500; i++)
    {
	# Line length between 10K and 20K characters + newline
	line_len = 10000 * rand() + 10000;
	for (j = 1; j <= line_len; j++)
	{
	    # 15% of punctuation and digit charcaters, the rest letters
	    if (rand() < 0.15)
	    {
		# Start at SPACE
		lbase = 32;
		llen = 33;
	    }
	    else
	    {
		# Start at 'a'
		lbase = 97;
		llen = 26;
	    }
	    printf "%c", llen * rand() + lbase;
	}
	printf "\n";
    }
}

---------------------------------------------


In GNU Emacs 24.2.93.1 (i386-mingw-nt5.1.2600)
 of 2013-02-07 on HOME-C4E4A596F7
Windowing system distributor `Microsoft Corp.', version 5.1.2600
Configured using:
 `configure --with-gcc (3.4) --cflags -Id:/usr/include/libxml2'

Important settings:
  value of $LANG: ENU
  locale-coding-system: cp1255
  default enable-multibyte-characters: t

Major mode: Mail

Minor modes in effect:
  shell-dirtrack-mode: t
  diff-auto-refine-mode: t
  flyspell-mode: t
  desktop-save-mode: t
  show-paren-mode: t
  display-time-mode: t
  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  temp-buffer-resize-mode: t
  line-number-mode: t
  auto-fill-function: mail-mode-auto-fill
  abbrev-mode: t

Recent input:
e t a i l s . <return> <up> <up> <C-right> <C-right> 
<C-right> C-x C-e <help-echo> <help-echo> <down> <down> 
<down> <return> T h e SPC r e a s o n SPC f o r SPC 
t h e SPC d e f a u l t SPC v a l u e SPC i s SPC t 
o SPC a v o i d SPC t h e SPC a n n o y i n g SPC j 
u m p s SPC o f SPC t h e SPC m o d e SPC l i n e <up> 
<M-right> <C-left> <C-left> <C-left> <left> SPC a <backspace> 
u p SPC a n d SPC d o w n M-q <down> SPC w h e n SPC 
t h e SPC e c h o SPC a r e a SPC d i s p l a y s SPC 
m e s s a g e s SPC o f SPC d i f f e r e n t SPC l 
e n g t h . <return> <C-home> C-c C-s <help-echo> <switch-frame> 
d d d d d d d d d SPC d d o P O <tab> <return> d d 
d d d d d d d d n d SPC d d d SPC <prior> <next> <next> 
d SPC d d d d d C-z C-z C-z C-z C-z C-z C-z C-z d d 
d d d d SPC SPC <prior> <next> <next> <next> <next> 
<next> <next> <next> <next> <next> <next> <next> <next> 
<next> <next> <next> <next> <next> <next> <next> <next> 
<next> d <C-home> C-x C-s <switch-frame> <switch-frame> 
<help-echo> <help-echo> <switch-frame> <switch-frame> 
<help-echo> <switch-frame> <help-echo> M-x r e p o 
r t - e m a c s - b u <tab> <return>

Recent messages:
Sending...
Added to d:/usr/eli/rmail/SENT.MAIL
Sending email 
Sending email done
Sending...done
Added to d:/usr/eli/rmail/PORTS.rmail
No following nondeleted message
Mark set
Saving file d:/usr/eli/rmail/INBOX...
Wrote d:/usr/eli/rmail/INBOX [2 times]

Load-path shadows:
None found.

Features:
(shadow emacsbug cc-awk tar-mode etags texinfo mule-util ebuff-menu
electric bug-reference add-log misearch multi-isearch dabbrev
time-stamp rmailout network-stream starttls tls mail-extr smtpmail
auth-source eieio password-cache shell mailalias sendmail help-mode
tcl nxml-uchnm rng-xsd xsd-regexp rng-cmpct rng-nxml rng-valid rng-loc
rng-uri rng-parse nxml-parse rng-match rng-dt rng-util rng-pttrn
nxml-ns nxml-mode nxml-outln nxml-rap nxml-util nxml-glyph nxml-enc
xmltok sgml-mode conf-mode generic arc-mode archive-mode diff-mode
dired-x cl-macs gv dired face-remap org-wl org-w3m org-vm org-rmail
org-mhe org-mew org-irc org-jsinfo org-infojs org-html org-exp ob-exp
org-exp-blocks org-agenda org-info org-gnus gnus-util org-docview
org-bibtex bibtex org-bbdb org byte-opt warnings bytecomp byte-compile
cconv advice help-fns advice-preload ob-tangle ob-ref ob-lob ob-table
org-footnote org-src ob-comint ob-keys org-pcomplete pcomplete
org-list org-faces org-entities org-version ob-emacs-lisp ob
org-compat org-macs ob-eval org-loaddefs find-func cal-menu calendar
cal-loaddefs parse-time vc-cvs gud comint ansi-color ring sh-script
smie executable autoconf autoconf-mode make-mode autorevert noutline
outline easy-mmode jka-compr info vc-bzr cc-langs cl cl-lib cc-mode
cc-fonts cc-guess cc-menus cc-cmds cc-styles cc-align cc-engine
cc-vars cc-defs flyspell rmailsum qp rmailmm message format-spec
rfc822 mml mml-sec mm-decode mm-bodies mm-encode mailabbrev gmm-utils
mailheader mail-parse rfc2231 rmail rfc2047 rfc2045 ietf-drums mm-util
mail-prsvr mail-utils desktop server filecache mairix cus-edit
easymenu cus-start cus-load wid-edit saveplace midnight ispell
generic-x paren battery time time-date tooltip ediff-hook vc-hooks
lisp-float-type mwheel dos-w32 ls-lisp w32-common-fns disp-table
w32-win w32-vars tool-bar dnd fontset image regexp-opt fringe
tabulated-list newcomment lisp-mode register page menu-bar rfn-eshadow
timer select scroll-bar mouse jit-lock font-lock syntax facemenu
font-core frame cham georgian utf-8-lang misc-lang vietnamese tibetan
thai tai-viet lao korean japanese hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese case-table epa-hook
jka-cmpr-hook help simple abbrev minibuffer loaddefs button faces
cus-face macroexp files text-properties overlay sha1 md5 base64 format
env code-pages mule custom widget hashtable-print-readable backquote
make-network-process w32 multi-tty emacs)
Acknowledgement sent to Eli Zaretskii <eliz@HIDDEN>:
New bug report received and forwarded. Copy sent to bug-gnu-emacs@HIDDEN. Full text available.
Report forwarded to bug-gnu-emacs@HIDDEN:
bug#13675; Package emacs. Full text available.
Please note: This is a static page, with minimal formatting, updated once a day.
Click here to see this page with the latest information and nicer formatting.
Last modified: Tue, 10 Mar 2020 14:45:02 UTC

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997 nCipher Corporation Ltd, 1994-97 Ian Jackson.