Although the IANA registratio was apparently never finished, it is de facto used everywhere today.

Dear Giuseppe,

thank you for your report,

registration to IANA is not difficult, can you find somebody who is
willing to do it ?

https://www.iana.org/form/media-types

Have a nice day,

Charles

Hi,

I would also like to argue along the same lines on this point.

Please, consider:
https://www.rssboard.org/rss-mime-type-application.txt
https://codesearch.debian.net/search?q=rss%2Bxml&literal=1
https://www.w3.org/wiki/WebIntents/MIME_Types
https://en.wikipedia.org/wiki/RSS

Thanks,
Patrice

Hi Patrice,

maybe you or someone else can register the media type to the IANA based
on the expired IETF draft and see if it goes?

In any case, we have time as Debian is currently frozen...

Have a nice day,

Hi Charles,

Maybe it should be redirected to the members of the RSS Advisory Board, right?
I think that I'm not a relevant contact to apply for such a media type. I will
not be able to exchange and provide additional information.
Also, if the content of etc/mime.types is based on the IANA one[1], then why it
provides this 'application/x-rss+XML' entry? What for?

Many thanks,
Patrice

[1] https://www.iana.org/assignments/media-types/

Le Thu, May 18, 2023 at 02:54:10PM +0200, Patrice Duroux a écrit :

Hi Patrice,

you can also submit a media type on behalf of others. I did it for
text/gff3.  If you can not contact the members of the RSS Advisory
Board (which seems inactive), I think that you have good grounds to fill
the registration form by yourself.

It looks like somebody convinced the previous maintainer to remove
application/rss+XML in favour of the unregistered one!

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=605250

10 years later, that surely does not look like it was the best choice…

But please give a try to the IANA registration.  It is way easier than
10 years ago.

Have a nice day,

Charles