GNU bug report logs - #18792
multipart/related with "cid:" image not shown

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

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: bug-gnu-emacs <at> gnu.org
Subject: multipart/related with "cid:" image not shown
Date: Wed, 22 Oct 2014 10:01:21 -0400

Package: Emacs,gnus
Version: 24.4.51


[ This also affects trunk, and has probably been going on for a while
  now.  ]

I regularly receive emails that contain "a tiny bit of HTML text around
a picture".  Often these have the following MIME structure:

    multipart/related
      multipart/alternative
        text/plain
        text/html
      image/jpeg

where the HTML refers to the image via a "cid:" URL.

Here's the problem: Gnus seems to only show me the first element of the
multipart/related and does not let me get access to the image.

More specifically, I get a display such as:

   From: "Toto" <toto <at> gnu.ca>
   Subject: blabla
   To: Stefan Monnier <monnier <at> iro.umontreal.ca>
   Date: Wed, 22 Oct 2014 12:59:18 +0000 (47 minutes, 13 seconds ago)
   
   1.  (*) text/plain          ( ) text/html           
   
   Mira esto
   [cid:ED58E6891D72E141A6C22D4BAFEF436F <at> gnu.ca]

Notice the lack of any button to view the image/jpeg subpart.
The same problem shows up if I select the text/html:

   From: "Toto" <toto <at> gnu.ca>
   Subject: blabla
   To: Stefan Monnier <monnier <at> iro.umontreal.ca>
   Date: Wed, 22 Oct 2014 12:59:18 +0000 (47 minutes, 13 seconds ago)
   
   1.  ( ) text/plain          (*) text/html           
   
       Mira esto
       
   *

It looks marginally different because it's rendered by shr.el, but the
problem remains that I have no access to the attached image.


        Stefan

Message #8 received at 18792 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 18792 <at> debbugs.gnu.org
Subject: Re: bug#18792: multipart/related with "cid:" image not shown
Date: Wed, 25 Jan 2017 21:32:58 +0100

Stefan Monnier <monnier <at> iro.umontreal.ca> writes:

> [ This also affects trunk, and has probably been going on for a while
>   now.  ]
>
> I regularly receive emails that contain "a tiny bit of HTML text around
> a picture".  Often these have the following MIME structure:
>
>     multipart/related
>       multipart/alternative
>         text/plain
>         text/html
>       image/jpeg
>
> where the HTML refers to the image via a "cid:" URL.
>
> Here's the problem: Gnus seems to only show me the first element of the
> multipart/related and does not let me get access to the image.
>
> More specifically, I get a display such as:
>
>    From: "Toto" <toto <at> gnu.ca>
>    Subject: blabla
>    To: Stefan Monnier <monnier <at> iro.umontreal.ca>
>    Date: Wed, 22 Oct 2014 12:59:18 +0000 (47 minutes, 13 seconds ago)
>
>    1.  (*) text/plain          ( ) text/html           
>
>    Mira esto
>    [cid:ED58E6891D72E141A6C22D4BAFEF436F <at> gnu.ca]

I haven't used "buttonised" article display in yonks, but I think cid:
basically works for me in the articles (I mean spam) I see, and they are
usually multipart/alternative wrapped in multipart/related, I seem to
remember from the last time I looked at it.

Could you forward a complete message that displays the issue?

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

Message #11 received at 18792 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> IRO.UMontreal.CA>
To: Lars Ingebrigtsen <larsi <at> gnus.org>
Cc: 18792 <at> debbugs.gnu.org
Subject: Re: bug#18792: multipart/related with "cid:" image not shown
Date: Wed, 25 Jan 2017 16:44:53 -0500

> I haven't used "buttonised" article display in yonks, but I think cid:

Hmm... I don't remember choosing a "buttonised" article display, and
don't know what alternative there might be.


        Stefan

Message #14 received at 18792 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Stefan Monnier <monnier <at> IRO.UMontreal.CA>
Cc: 18792 <at> debbugs.gnu.org
Subject: Re: bug#18792: multipart/related with "cid:" image not shown
Date: Wed, 25 Jan 2017 22:51:14 +0100

Stefan Monnier <monnier <at> IRO.UMontreal.CA> writes:

>> I haven't used "buttonised" article display in yonks, but I think cid:
>
> Hmm... I don't remember choosing a "buttonised" article display, and
> don't know what alternative there might be.

I think that's controlled by `gnus-unbuttonized-mime-types'?

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

Message #17 received at 18792 <at> debbugs.gnu.org (full text, mbox):

From: Andreas Schwab <schwab <at> linux-m68k.org>
To: Stefan Monnier <monnier <at> IRO.UMontreal.CA>
Cc: Lars Ingebrigtsen <larsi <at> gnus.org>, 18792 <at> debbugs.gnu.org
Subject: Re: bug#18792: multipart/related with "cid:" image not shown
Date: Thu, 26 Jan 2017 10:16:20 +0100

On Jan 25 2017, Stefan Monnier <monnier <at> IRO.UMontreal.CA> wrote:

>> I haven't used "buttonised" article display in yonks, but I think cid:
>
> Hmm... I don't remember choosing a "buttonised" article display, and
> don't know what alternative there might be.

You can always use C-d (gnus-summary-enter-digest-group) to inspect the
article's elements as separate articles.

Andreas.

-- 
Andreas Schwab, schwab <at> linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756  01D3 44D5 214B 8276 4ED5
"And now for something completely different."

Message #20 received at 18792 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Stefan Monnier <monnier <at> IRO.UMontreal.CA>
Cc: 18792 <at> debbugs.gnu.org
Subject: Re: bug#18792: multipart/related with "cid:" image not shown
Date: Thu, 12 Apr 2018 23:24:20 +0200

Lars Ingebrigtsen <larsi <at> gnus.org> writes:

> Stefan Monnier <monnier <at> IRO.UMontreal.CA> writes:
>
>>> I haven't used "buttonised" article display in yonks, but I think cid:
>>
>> Hmm... I don't remember choosing a "buttonised" article display, and
>> don't know what alternative there might be.
>
> I think that's controlled by `gnus-unbuttonized-mime-types'?

More information was requested, but no response was given within a few
months, so I'm closing this bug report.  If the problem still exists,
please reopen this bug report.

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

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