bug#69479: 30.0.50; Attaching files to gnus fails

bug#69479: 30.0.50; Attaching files to gnus fails

[Alexander Prähauser via Bug reports for GNU Emacs, the Swiss army knife of text editors]

If I attach a file to a mail, I get the following message:

smtpmail-send-it: Sending failed: 554 5.0.0 Error: failed to parse
message: failed to get content type for for child 1:mime: expected slash
after first token in response to .

This seems to happen regardless of attachment type, whether my init
was loaded or whether I'm using protonmail or gmx to send the mail.


In GNU Emacs 30.0.50 (build 1, x86_64-pc-linux-gnu, cairo version
 1.18.0) of 2024-02-08 built on Archlaptop
Repository revision: 08c81db7c8e522278fb2c8de8fbe556d109c135f
Repository branch: master
Windowing system distributor 'The X.Org Foundation', version 11.0.12101011
System Description: Arch Linux

Configured using:
 'configure --with-x-toolkit=no'

Configured features:
ACL CAIRO DBUS FREETYPE GIF GLIB GMP GNUTLS GPM GSETTINGS HARFBUZZ JPEG
JSON LCMS2 LIBOTF LIBSYSTEMD LIBXML2 M17N_FLT MODULES NATIVE_COMP NOTIFY
INOTIFY OLDXMENU PDUMPER PNG RSVG SECCOMP SOUND SQLITE3 THREADS TIFF
TREE_SITTER WEBP X11 XDBE XIM XINPUT2 XPM ZLIB

Important settings:
  value of $LANG: en_US.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Fundamental

Minor modes in effect:
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  windmove-mode: t
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  global-goto-address-mode: t
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  yas-minor-mode: t
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  corfu-prescient-mode: t
  global-corfu-mode: t
  corfu-mode: t
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  global-font-lock-mode: t
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  blink-cursor-mode: t
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  global-visual-line-mode: t
  visual-line-mode: t
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  auto-encryption-mode: t
  auto-compression-mode: t

Load-path shadows:
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~/.emacs.d/site-lisp/dired+ hides /home/alex/.emacs.d/site-lisp/icicles/dired+
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~/.emacs.d/site-lisp/Avy-act-on-Distance/avy-act-on-distance hides /home/alex/.emacs.d/site-lisp/DEmacs/avy-act-on-distance/avy-act-on-distance

Features:
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Memory information:
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 (string-bytes 1 15036125) (vectors 16 156502) (vector-slots 8 2721433 816804)
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bug#69479: 30.0.50; Attaching files to gnus fails

[Eric Abrahamsen]

Alexander Prähauser via "Bug reports for GNU Emacs, the Swiss army knife
of text editors" <bug-gnu-emacs@gnu.org> writes:

> If I attach a file to a mail, I get the following message:
>
> smtpmail-send-it: Sending failed: 554 5.0.0 Error: failed to parse
> message: failed to get content type for for child 1:mime: expected slash
> after first token in response to .
>
> This seems to happen regardless of attachment type, whether my init
> was loaded or whether I'm using protonmail or gmx to send the mail.

Can you show us an example MIME tag from an offending message? The
#part thing?

Thanks,
Eric

bug#69479: 30.0.50; Attaching files to gnus fails

[Alexander Prähauser via Bug reports for GNU Emacs, the Swiss army knife of text editors]

#part type=#("text/plain" 0 10 (fontified nil)) filename="~/gdb.txt" disposition=inline description=gdb

I removed the end so it doesn't get parsed as an attachment.

bug#69479: 30.0.50; Attaching files to gnus fails

[Eric Abrahamsen]

Alexander Prähauser via "Bug reports for GNU Emacs, the Swiss army knife
of text editors" <bug-gnu-emacs@gnu.org> writes:

> #part type=#("text/plain" 0 10 (fontified nil)) filename="~/gdb.txt" disposition=inline description=gdb
>
> I removed the end so it doesn't get parsed as an attachment.

Thanks. The content type attribute is a string with text properties
attached, I assume that's the source of the error. This is ringing a
faint bell. Can you tell me what command you're running to attach the
file to the message?

bug#69479: 30.0.50; Attaching files to gnus fails

[Alexander Prähauser via Bug reports for GNU Emacs, the Swiss army knife of text editors]

C-c C-t, as usual.

bug#69479: 30.0.50; Attaching files to gnus fails

[Alexander Prähauser via Bug reports for GNU Emacs, the Swiss army knife of text editors]

C-c C-a, as usual.

bug#69479: 30.0.50; Attaching files to gnus fails

[Michael Heerdegen via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Alexander Prähauser via "Bug reports for GNU Emacs, the Swiss army knife
of text editors" <bug-gnu-emacs@gnu.org> writes:

> C-c C-a, as usual.

The question is

> #part type=#("text/plain" 0 10 (fontified nil)) filename="~/gdb.txt"
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^    

why the C-c C-a prompt delivers a string with text properties attached
in your case.  This should not happen, and I can't reproduce this.  Are
you using any package for completion, have configured completion, or do
you have any idea why a call like

  (gnus-completing-read
   "Content type"
   (mailcap-mime-types)
   nil nil nil "application/octet-stream")

does not return a plain string for you?

Michael.

bug#69479: 30.0.50; Attaching files to gnus fails

[Eric Abrahamsen]

Alexander Prähauser via "Bug reports for GNU Emacs, the Swiss army knife
of text editors" <bug-gnu-emacs@gnu.org> writes:

> C-c C-a, as usual.

What completion framework do you use? Crystal ball says icicles...

bug#69479: 30.0.50; Attaching files to gnus fails

[Alexander Prähauser via Bug reports for GNU Emacs, the Swiss army knife of text editors]

"Eric Abrahamsen" <eric@ericabrahamsen.net> writes:

> Alexander Prähauser via "Bug reports for GNU Emacs, the Swiss army knife
> of text editors" <bug-gnu-emacs@gnu.org> writes:
>
>> C-c C-a, as usual.
>
> What completion framework do you use? Crystal ball says icicles...

No, Vertico, with Corfu for drop-down completion.

bug#69479: 30.0.50; Attaching files to gnus fails

[Alexander Prähauser via Bug reports for GNU Emacs, the Swiss army knife of text editors]

Alexander Prähauser <ahprae@protonmail.com> writes:

> "Eric Abrahamsen" <eric@ericabrahamsen.net> writes:
>
>> Alexander Prähauser via "Bug reports for GNU Emacs, the Swiss army knife
>> of text editors" <bug-gnu-emacs@gnu.org> writes:
>>
>>> C-c C-a, as usual.
>>
>> What completion framework do you use? Crystal ball says icicles...
>
> No, Vertico, with Corfu for drop-down completion.

Huh, it works if I disable Vertico. I'll file a bug report there.

bug#69479: 30.0.50; Attaching files to gnus fails

[Eric Abrahamsen]

Alexander Prähauser via "Bug reports for GNU Emacs, the Swiss army knife
of text editors" <bug-gnu-emacs@gnu.org> writes:

> Alexander Prähauser <ahprae@protonmail.com> writes:
>
>> "Eric Abrahamsen" <eric@ericabrahamsen.net> writes:
>>
>>> Alexander Prähauser via "Bug reports for GNU Emacs, the Swiss army knife
>>> of text editors" <bug-gnu-emacs@gnu.org> writes:
>>>
>>>> C-c C-a, as usual.
>>>
>>> What completion framework do you use? Crystal ball says icicles...
>>
>> No, Vertico, with Corfu for drop-down completion.
>
> Huh, it works if I disable Vertico. I'll file a bug report there.

Thanks, I'll watch that report. There are other guards in this area of
the code against completion frameworks returning propertized strings, so
it may be that we end up adding one here (or in `gnus-completing-read').
I don't actually know if there's an explicit contract saying completion
strings should not have properties, but in this case at least it looks
like leakage of something internal.

I'm going to close this report for now; please reopen if necessary.

bug#69479: 30.0.50; Attaching files to gnus fails

[Alexander Prähauser via Bug reports for GNU Emacs, the Swiss army knife of text editors]

"Eric Abrahamsen" <eric@ericabrahamsen.net> writes:

> Alexander Prähauser via "Bug reports for GNU Emacs, the Swiss army knife
> of text editors" <bug-gnu-emacs@gnu.org> writes:
>
>> Alexander Prähauser <ahprae@protonmail.com> writes:
>>
>>> "Eric Abrahamsen" <eric@ericabrahamsen.net> writes:
>>>
>>>> Alexander Prähauser via "Bug reports for GNU Emacs, the Swiss army knife
>>>> of text editors" <bug-gnu-emacs@gnu.org> writes:
>>>>
>>>>> C-c C-a, as usual.
>>>>
>>>> What completion framework do you use? Crystal ball says icicles...
>>>
>>> No, Vertico, with Corfu for drop-down completion.
>>
>> Huh, it works if I disable Vertico. I'll file a bug report there.
>
> Thanks, I'll watch that report. There are other guards in this area of
> the code against completion frameworks returning propertized strings, so
> it may be that we end up adding one here (or in `gnus-completing-read').
> I don't actually know if there's an explicit contract saying completion
> strings should not have properties, but in this case at least it looks
> like leakage of something internal.
>
> I'm going to close this report for now; please reopen if necessary.

One more thing, I sent a report to Daniel Mendler and we found out that
the issue is that minibuffer-allow-text-properties was set to t by
something. He also wrote this:

"While I insist that it is a mistake to set minibuffer-allow-text-properties globally, I still wonder why Gnus uses propertized
candidates in the first place, in particular with a useless fontified=nil property. Ideally commands which pass propertized
candidates can also handle propertized return values. So maybe a guard could be added to Gnus, but I would rather
recommend to strip the properties properly before passing the candidates like text/plain to gnus-completing-read."

bug#69479: 30.0.50; Attaching files to gnus fails

[Eric Abrahamsen]

Alexander Prähauser via "Bug reports for GNU Emacs, the Swiss army knife
of text editors" <bug-gnu-emacs@gnu.org> writes:

> "Eric Abrahamsen" <eric@ericabrahamsen.net> writes:
>
>> Alexander Prähauser via "Bug reports for GNU Emacs, the Swiss army knife
>> of text editors" <bug-gnu-emacs@gnu.org> writes:
>>
>>> Alexander Prähauser <ahprae@protonmail.com> writes:
>>>
>>>> "Eric Abrahamsen" <eric@ericabrahamsen.net> writes:
>>>>
>>>>> Alexander Prähauser via "Bug reports for GNU Emacs, the Swiss army knife
>>>>> of text editors" <bug-gnu-emacs@gnu.org> writes:
>>>>>
>>>>>> C-c C-a, as usual.
>>>>>
>>>>> What completion framework do you use? Crystal ball says icicles...
>>>>
>>>> No, Vertico, with Corfu for drop-down completion.
>>>
>>> Huh, it works if I disable Vertico. I'll file a bug report there.
>>
>> Thanks, I'll watch that report. There are other guards in this area of
>> the code against completion frameworks returning propertized strings, so
>> it may be that we end up adding one here (or in `gnus-completing-read').
>> I don't actually know if there's an explicit contract saying completion
>> strings should not have properties, but in this case at least it looks
>> like leakage of something internal.
>>
>> I'm going to close this report for now; please reopen if necessary.
>
> One more thing, I sent a report to Daniel Mendler and we found out that
> the issue is that minibuffer-allow-text-properties was set to t by
> something. He also wrote this:
>
> "While I insist that it is a mistake to set minibuffer-allow-text-properties globally, I still wonder why Gnus uses propertized
> candidates in the first place, in particular with a useless fontified=nil property. Ideally commands which pass propertized
> candidates can also handle propertized return values. So maybe a guard could be added to Gnus, but I would rather
> recommend to strip the properties properly before passing the candidates like text/plain to gnus-completing-read."

Yes, I saw that. I've looked through mml.el and mailcap.el, and don't
see anything that could be adding text properties to the list of
mailcap-mime-types. All the mimetypes are collected by the function
`mailcap-parse-mimetypes', which looks for a hardcoded list of files,
and parses any files that exist for potential mimetypes. Nothing in this
process add text properties to any of the strings.

If you run C-u M-: (mailcap-mime-types) in *scratch*, is everything
propertized or only some of the entries?

bug#69479: 30.0.50; Attaching files to gnus fails

[Michael Heerdegen via Bug reports for GNU Emacs, the Swiss army knife of text editors]

> (from Mr. Mendler:)
> "While I insist that it is a mistake to set
> minibuffer-allow-text-properties globally, I still wonder why Gnus
> uses propertized candidates in the first place, in particular with a
> useless fontified=nil property.

I don't think this is the case.  I don't see Gnus using propertized
candidates.  I guess those properties are attached by something else
you (i.e. Alexander) are using.

With other words: one of your used addons attaches text properties to
the input, and you force Emacs to keep them for the return value (of the
completion function).

If this is all the case, this would be a quite extraordinary setup
crying for problems; you should try to fix this then on your side.

It could also be fixed in Gnus, but: I don't think Gnus is the only thing
that your setup breaks - so it's just easier to avoid the trouble.

Michael.