Displaying text/calendar after the text/html part

Displaying text/calendar after the text/html part

[Husain Alshehhi]

Hello,

By default, if I get an email that has two parts, text/html (first) and
text/calendar (second), gnus by default shows the text/calendar. This
default behavior is because mime tools in emacs display the latest part
as it is the "most rich"[1]. However, in the case, both display
different information. I would like to display the text/html first, and
then the text/calendar at the same time. I would like to do that when
the email has html and calendar parts. Is this possible?

[1] https://www.gnu.org/software/emacs/manual/html_mono/emacs-mime.html#index-mm_002ddiscouraged_002dalternatives

Re: Displaying text/calendar after the text/html part

[Husain Alshehhi]

Steinar Bang <sb@dod.no> writes:

> Doesn't that depend on whether it is multipart/mixed or multipart/alternative?

Thank you for the catch. Outlook is sending multipart/alternative when
it is not really alternative. Looks like an issue with Outlook.

Re: Displaying text/calendar after the text/html part

[Eric S Fraga]

On Friday, 26 Jan 2024 at 07:55, Steinar Bang wrote:
> Doesn't that depend on whether it is multipart/mixed or
> multipart/alternative?

It does but, annoyingly, tools like Outlook and Teams send calendar
invites using multipart/alternative despite the /alternative/ contents
being significantly different.  It would be great if one could override
the processing of multipart/alternative to behave like multipart/mixed.

-- 
Eric S Fraga via gnus (Emacs 30.0.50 2023-09-14) on Debian 12.2

Re: Displaying text/calendar after the text/html part

[Steinar Bang]

>>>>> Husain Alshehhi <husain@alshehhi.io>:

> Hello,

> By default, if I get an email that has two parts, text/html (first) and
> text/calendar (second), gnus by default shows the text/calendar. This
> default behavior is because mime tools in emacs display the latest part
> as it is the "most rich"[1]. However, in the case, both display
> different information. I would like to display the text/html first, and
> then the text/calendar at the same time. I would like to do that when
> the email has html and calendar parts. Is this possible?

Doesn't that depend on whether it is multipart/mixed or multipart/alternative?

With multipart/mixed:
https://datatracker.ietf.org/doc/html/rfc2046#section-5.1.3
   The "mixed" subtype of "multipart" is intended for use when the body
   parts are independent and need to be bundled in a particular order.
   Any "multipart" subtypes that an implementation does not recognize
   must be treated as being of subtype "mixed".

With multipart/alternative:
https://datatracker.ietf.org/doc/html/rfc2046#section-5.1.4
   The "multipart/alternative" type is syntactically identical to
   "multipart/mixed", but the semantics are different.  In particular,
   each of the body parts is an "alternative" version of the same
   information.

I.e. with multipart/mixed both the calendar and text should be displayed
in the order they are found in the email, while with
multipart/alternative only the "richest" alternative should be
displayed?