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Is the chemical media type still used?



Hi all,

I am preparing the next update of the `media-types` package, which
provides the `/etc/mime.types` file.

We have been listing chemical media types in this file since 2003.  This
left a lot of time for software and their file formats to be
progressively replaced.  For instance, in my understanding, the `.chm`
(chemical/x-chemdraw) extension used to be used by ChemDraw, but was
then taken over by Windows and now ChemDraw uses a different format,
`.cdxml` (application/vnd.chemdraw+xml).

A bunch of chemical media types are problematic because they declare
file extensions that are taken by other media types, and many software
parsing `/etc/mime.types` have difficulty to handle this.  One way they
solve the problem, for instance, is to ignore some or all chemical media
types.

It is my goal to progresively make `/etc/mime.types` closer and closer
to the data available at https://www.iana.org/assignments/media-types/media-types.xhtml,
including by registering missing types (https://www.iana.org/form/media-types)
and by removing legacy extra types that lost relevance.

If the chemical top-level media type is still relevant, maybe some
people on this list would like to register it to the IANA?  A recent RFC
was written about how to do such registration, and it mentions awareness
of the type (https://www.rfc-editor.org/rfc/rfc9694.html).

If the chemical media type is not relevant anymore, I would like to
remove it.

What are your thoughts?

Have a nice day,

Charles

--
Charles Plessy                         Nagahama, Yomitan, Okinawa, Japan
Debian Med packaging team         http://www.debian.org/devel/debian-med
Tooting from work,               https://fediscience.org/@charles_plessy
Tooting from home,                 https://framapiaf.org/@charles_plessy


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