GNU bug report logs - #45724
27.1; gnus vs. raw big5 headers vs. the second day

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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: 27.1; gnus vs. raw big5 headers vs. the second day
Date: Fri, 08 Jan 2021 13:43:20 +0800

[Message part 1 (text/plain, inline)]

Yes the mails we receive have properly mime encoded headers.
But let's say some agency sends an email with ancient illegal raw big5
headers:
$ iconv -f big5 headers.txt
Subject: 內政部部長電子信箱受理通知編號:20210108003         
From: "內政部部長電子信箱" <returnecss <at> minister.moi.gov.tw>

Well, on the first day, things work fine in gnus.

But on the second day upon reopening gnus, the headers have "degraded":

[20210108T131442.jpg (image/jpeg, inline)]

[Message part 3 (text/plain, inline)]

The *Summary* buffer has now a garbled line. Howver the *Article* buffer
is still doing fine.

Funny thing is, if we pipe the second article through procmail, and
enter gnus again, the newly created identical third article has an OK
*Summary* line.

Important settings:
  value of $LC_COLLATE: C
  value of $LC_CTYPE: zh_TW.UTF-8
  value of $LC_MESSAGES: C
  value of $LANG: zh_TW.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

(One also notes raw big5 enters the .overview file, but not always.)

My dot files are at https://www.jidanni.org/comp/configuration/

Anyway, sure, gnus can deal with such wacky headers fine on the first
day.

But on the second day, after totally quitting emacs and starting up
again, such headers are no longer dealt with properly, at least in the
*Summary* buffer.

Sure, "Tell the agency to stop sending illegal headers." Well, yes...

Message #8 received at 45724 <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: 45724 <at> debbugs.gnu.org
Subject: Re: bug#45724: 27.1; gnus vs. raw big5 headers vs. the second day
Date: Sun, 10 Jan 2021 14:40:44 +0100

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

> But on the second day upon reopening gnus, the headers have "degraded":

What mail backend are you using?  Do you use the Gnus cache?  The Gnus
Agent?

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

Message #11 received at 45724 <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: 45724 <at> debbugs.gnu.org
Subject: Re: bug#45724: 27.1; gnus vs. raw big5 headers vs. the second day
Date: Mon, 11 Jan 2021 22:06:48 +0800

In that image you can see "nnml:mail.misc".
In https://www.jidanni.org/comp/configuration/.gnus.el I don't have gnus
cache or gnus agent turned on.

>>>>> "LI" == Lars Ingebrigtsen <larsi <at> gnus.org> writes:
LI> What mail backend are you using?  Do you use the Gnus cache?  The Gnus
LI> Agent?

Message #14 received at 45724 <at> debbugs.gnu.org (full text, mbox):

From: 積丹尼 Dan Jacobson <jidanni <at> jidanni.org>
To: 45925 <at> debbugs.gnu.org, 45724 <at> debbugs.gnu.org
Subject: Happens since 27.1
Date: Tue, 19 Jan 2021 09:04:16 +0800

Note with emacs-version "27.1"  these certain old messages that have been
sitting in my *Summary* buffer for years suddenly have got their Subject
garbled. (Fine though in *Article* buffer.)

Message #17 received at 45724 <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: 45724 <at> debbugs.gnu.org
Subject: Re: bug#45724: 27.1; gnus vs. raw big5 headers vs. the second day
Date: Fri, 22 Jan 2021 19:09:00 +0100

And this one was also fixed by the bug#45925 fix.

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

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