GNU bug report logs - #44809
Say "Consider switching so-long mode on" when detecting long line files

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: 積丹尼 Dan Jacobson <jidanni <at> jidanni.org>
To: bug-gnu-emacs <at> gnu.org
Subject: One very long line of <中文> XML tags puts emacs
 out of business
Date: Mon, 23 Nov 2020 09:04:17 +0800

1. Visit https://data.gov.tw/dataset/34315 .
2. Download e.g., B臺中市 .
3. Unzip, and open one of the more whopping XML files,

$ ls -ogS Downloads/B_XML/ | head -n 5
-rw-r--r-- 1 3091875 2020-04-13  b_4602.xml
-rw-r--r-- 1 3087978 2020-04-13  b_0755.xml
-rw-r--r-- 1 2874539 2020-04-13  b_5709.xml
-rw-r--r-- 1 2829385 2020-04-13  b_0530.xml

Press M-> [end-of-buffer]. Now press M-<.

You'll see the combination of one very long line, UTF-8 tags (<國有>),
etc. causes emacs to, well, only be able to process C-g's and beep.

Before long one can only put it out of its misery with
$ killall -1 emacs.
emacs-version "27.1"

Message #10 received at 44809 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: 積丹尼 Dan Jacobson <jidanni <at> jidanni.org>
Cc: 44809 <at> debbugs.gnu.org
Subject: Re: bug#44809: One very long line of <中文> XML
 tags puts emacs out of business
Date: Tue, 24 Nov 2020 08:05:54 +0100

積丹尼 Dan Jacobson <jidanni <at> jidanni.org> writes:

> Before long one can only put it out of its misery with
> $ killall -1 emacs.

Yes, this is a general Emacs problem.  Consider switching so-long mode
on.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #13 received at 44809 <at> debbugs.gnu.org (full text, mbox):

From: 積丹尼 Dan Jacobson <jidanni <at> jidanni.org>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: control <at> debbugs.gnu.org, 44809 <at> debbugs.gnu.org
Subject: Re: bug#44809: Warn that current file needs so-long mode
Date: Sat, 28 Nov 2020 03:43:25 +0800

retitle 44809 Say "Consider switching so-long mode on" when detecting long line files
thanks

>>>>> "LI" == Lars Ingebrigtsen <larsi <at> gnus.org> writes:

>> Before long one can only put it out of its misery with
>> $ killall -1 emacs.

LI> Yes, this is a general Emacs problem.  Consider switching so-long mode
LI> on.

OK. SO LONG as emacs also says that automatically,
when detecting such files.
Else the user will never know.
And ends up reporting more bugs than necessary.

Then at least the user will know something is up and won't try ESC >
etc. locking up emacs.

Message #18 received at 44809 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: 積丹尼 Dan Jacobson <jidanni <at> jidanni.org>
Cc: 44809 <at> debbugs.gnu.org
Subject: Re: bug#44809: Warn that current file needs so-long mode
Date: Sun, 29 Nov 2020 10:50:03 +0100

積丹尼 Dan Jacobson <jidanni <at> jidanni.org> writes:

> retitle 44809 Say "Consider switching so-long mode on" when detecting
> long line files

The plan is to have so-long mode on by default in Emacs 28, but there
are some things that have to be tweaked a bit first, if I understand
things correctly.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

Message #21 received at 44809 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: 積丹尼 Dan Jacobson <jidanni <at> jidanni.org>
Cc: 44818 <at> debbugs.gnu.org, 44809 <at> debbugs.gnu.org
Subject: Re: bug#44818: Say "Consider switching so-long mode on" when
 detecting long line files
Date: Sat, 23 Jul 2022 10:56:19 +0200

These issues have been fixed by Gregory in Emacs 29 -- Emacs no longer
needs to rely on so-long, but works fine out of the box with these sorts
of files, so I'm closing this bug report.

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