bug#51388: 28.0.60; broken display of message/rfc822 MIME part

[Stephen Berman]

On Fri, 29 Oct 2021 17:27:29 +0200 Lars Ingebrigtsen <larsi@gnus.org> wrote:

> Stephen Berman <stephen.berman@gmx.net> writes:
>
>> 0. Save the attached file e.g. as "~/test".
>> 1. emacs -Q
>> 2. M-x gnus, type `y' at the prompt.
>> 3. In the *Group* buffer type `G f test RET'.
>> 4. Type RET to enter Gnus Summary mode showing the file as mail.
>> 5. In the Summary buffer type RET to open the mail.
>> 6. In the Summary buffer type `2 b' to open the buttonized
>>    message/rfc822 attachment display in the Article buffer.
>> => The attachment is displayed as the untreated raw text of the file
>> (i.e. with all headers, quoted-printable-encoded) instead of as a normal
>> email, as it is when repeating the recipe in emacs-27.
>
> I've now fixed this on the emacs-28 branch.

FTR, I confirm the bug is fixed.  Thanks!

Steve Beramn