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Re: [media-types] Actualize Media-type declaration of MathML?

Harald Alvestrand <harald@alvestrand.no> Wed, 30 March 2022 07:48 UTC

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From: Harald Alvestrand <harald@alvestrand.no>
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Subject: Re: [media-types] Actualize Media-type declaration of MathML?
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As a matter of principle, I think that IANA registrations should reflect 
the underlying specification at the time of registration or update of 
registration.

Thus, versionless links pointing to resources that are *expected* to be 
changed without notification to IANA should not be used in registration. 
(Since we use URLs at all, we cannot guard against accidental or 
malicious modification of resources - but we shouldn't do it deliberately.)

This is important in order to at least attempt to ensure that review of 
MIME type registrations has occured on what's currently the specification.

My opinion.

Harald

On 3/27/22 15:12, Paul Libbrecht wrote:
>
> Dear IETF-Types mailing-list,
>
> The W3C Math working group has, with MathML3, registered the three 
> media-types related to MathML (generic mathml 
> <https://www.iana.org/assignments/media-types/application/mathml+xml>, 
> mathml-content 
> <https://www.iana.org/assignments/media-types/application/mathml-content+xml> 
> and mathml-presentation 
> <https://www.iana.org/assignments/media-types/application/mathml-presentation+xml>).
>
> The three URLs above are fine and do not need an update.
> The table of media-types 
> <https://www.iana.org/assignments/media-types/media-types.xhtml>, 
> however, contains the URL of the MathML specification used to declare it.
>
> The Math Working group of the W3C is working on MathML4 and its 
> finalization would mean that the MathML3 Appendix 
> <https://www.w3.org/TR/MathML3/appendixb.html> (as referenced in the 
> table) would show a big “obsolete” warning.
>
> The working group would thus like to actualise the URL of the table to 
> a URL that is not version dependent. As of today, it would be the 
> version-less appendix URL <https://www.w3.org/TR/MathML/appendixb.html>.
>
>   * Can such a change be done?
>   * Is this part of the W3C-IANA liaison?
>   * We would like to make the change latest when MathML 4 enters the
>     TR space. Would it be possible to do it earlier?
>
> Thanks in advance.
>
> Paul
>
>
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