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Re: master ef14acf: Make nnml handle invalid non-ASCII headers more cons


From: Eric Abrahamsen
Subject: Re: master ef14acf: Make nnml handle invalid non-ASCII headers more consistently
Date: Mon, 19 Dec 2022 09:48:15 -0800
User-agent: Gnus/5.13 (Gnus v5.13)

On 12/19/22 19:07 PM, Eli Zaretskii wrote:
>> From: Florian Weimer <fweimer@redhat.com>
>> Cc: larsi@gnus.org,  eric@ericabrahamsen.net,  emacs-devel@gnu.org,
>>   ding@gnus.org
>> Date: Mon, 19 Dec 2022 14:59:17 +0100
>> 
>> > I'm not sure this is related.  I was talking about the missing SPC
>> > character before the parentheses.  But I know very little about this
>> > stuff, so maybe I'm just misunderstanding you.
>> 
>> I was responding to “this From header is invalid”.  I'm not sure if the
>> original message is actually malformed.
>
> Ah, okay.  I'm not sure, either, although I don't think I've ever seen
> such addresses.  But I'm no expert.  Maybe rfc2047.el needs to be more
> tolerant and less dependent on whitespace; I'll leave that to experts.
> But even if there's nothing wrong with this particular header, I think
> you will agree that signaling and error and thus failing the entire
> storage of the message is not TRT, especially since the change which
> causes this was done for basically aesthetic reasons.  Falling back to
> previous behavior in these cases is better, I think.
>
>> As I expected, I could reproduce the issue with new mail.  I'm happy to
>> report that replacing nnml--encode-headers with your new version fixes
>> the issue.
>
> Thanks, so I've now installed this on the emacs-29 branch, for the
> upcoming Emacs 29.1.
>
>> Going back to older mail, I see that previously the From: header was
>> written in encoded form to .overview (slightly wrapped to avoid SMTP
>> issues):
>> 
>> 8523 Re: [PATCH 1/7] Rename 'hello2.spec.' -> 'hello2.spec'
>> 'hello3.spec.' -> 'hello3.spec'
>> =?utf-8?b?572X5YuH5YiaKFlvbmdnYW5nIEx1bykgdmlhIEVsZnV0aWxzLWRldmVs?=
>> <elfutils-devel@sourceware.org> Thu, 24 Nov 2022 16:27:56 +0800
>> <CAE2XoE_RBNdsPZMLiSQKJroyx4ycvqf7y+VDbuY=-XbhOwsL8g@mail.gmail.com>
>>   <20220920084307.1696-1-luoyonggang@gmail.com>
>> <20220920084307.1696-2-luoyonggang@gmail.com>
>> <Y0nH98k6YumMRSz0@wildebeest.org>
>> <CAE2XoE-xfFQNMN1JYSi8Kp+-DUUookRkzwUV+OvKGfnZKDXKEA@mail.gmail.com>
>> <20221019194930.GC24703@redhat.com>
>> <3bf19d05c8976411432709fae1cc2bcc2d21d700.camel@klomp.org>
>>   <586fbfd512763e539f0d06e8ffa308da34be5368.camel@wildebeest.org>
>> 705 32 Xref: oldenburg.str.redhat.com
>> lists.sourceware.elfutils-devel:8523 Cc: "Frank Ch. Eigler"
>> <fche@redhat.com>, elfutils-devel@sourceware.org To: Mark Wielaard
>> <aegon@wildebeest.org>
>> 
>> Now it uses unencoded form:
>> 
>> 8762 Re: [PATCH v2 13/16] lib: isatty is not available on windows 罗
>> 勇刚(Yonggang Luo) via Elfutils-devel
>> <elfutils-devel@sourceware.org> Mon, 19 Dec 2022 20:32:48 +0800
>> <CAE2XoE-Xv6+4Npj38ih_nPMZ8e6ph7oS8wxvKFx1uE-sRfH_kw@mail.gmail.com>
>> <20221217165213.152-1-luoyonggang@gmail.com>
>>   <20221217165213.152-14-luoyonggang@gmail.com> 1074 43 Xref:
>> oldenburg.str.redhat.com lists.sourceware.elfutils-devel:8762 To:
>> elfutils-devel@sourceware.org
>
> Is that a problem?  I think this was part of the reason for that
> change in nnml.el.

It would definitely be a problem to change the on-disk representation of
data in the .overview files! Lots of code depends on a very specific
format for those files; I've broken things badly in the past by removing
header encoding there.



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