funny multipart/related not displaying correctly

[Dan Christensen <jdc@uwo.ca>]

[-- Attachment #1: Type: text/plain, Size: 1153 bytes --]

The message attached below isn't displayed well by Gnus.  I suspect
that it is incorrect MIME.  Unfortunately, I'm getting a lot of
messages like this from a certain source who can't change the software
which generates them.  So I'm wondering:  are they in fact incorrect
MIME, and is there a way to get Gnus to detect this and display them
properly automatically?

The messages consist of a multipart/related with
type="multipart/alternative" and two sub-parts.  The first subpart
(part 1) is a multipart/alternative (which is correct) and the second
(part 2) is an image (replaced below by a text/plain part).  The
enclosing multipart/related shouldn't be an alternative; I want to see
one of the first two parts and the last part.  If I hit `K m', Gnus
somehow can tell this is what I want and fixes the message.  I'd like
this to happen automatically.

By the way, before being fixed, `K b' only shows one button, which
corresponds to part 1, the alternative.  But I never see part 2.  
`C-u K b' fixes this, but shouldn't I see an alternative to part 1
with `K b'?

`C-d' on the message shows the correct heirarchy of parts.

Here is the message:


[-- Attachment #2: bad message --]
[-- Type: text/plain, Size: 763 bytes --]

>From nobody Wed Feb 21 00:19:30 2001
X-From-Line: test@test Tue Feb 20 16:41:01 2001
Message-Id: <200102202140.f1KLe4p32575@zwolle.execulink.net>
From: test@test
Date: Tue, 20 Feb 2001 16:12:11
MIME-Version: 1.0
Content-Type: multipart/related;
        type="multipart/alternative";
        boundary="----=unique-boundary-1"

This is a multi-part message in MIME format.

------=unique-boundary-1
Content-Type: multipart/alternative;
        boundary="----=unique-boundary-2"


------=unique-boundary-2
Content-Type: text/plain;

text/plain alternative 1a

------=unique-boundary-2
Content-Type: text/plain;

text/plain alternative 1b

------=unique-boundary-2--

------=unique-boundary-1
Content-Type: text/plain

text/plain part 2

------=unique-boundary-1--


[-- Attachment #3: Type: text/plain, Size: 66 bytes --]


Thanks for any suggestions,

Dan

-- 
Dan Christensen
jdc@uwo.ca