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w3c / mathml

MathML4 editors draft
https://w3c.github.io/mathml/
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actiontype attribute required on maction? #501

Closed davidcarlisle closed 1 month ago

davidcarlisle commented 3 months ago

In previous versions actiontype is a required attribute on <maction>

The MathML4 draft spec still says it is required. https://w3c.github.io/mathml/#presm_maction_att

That table lists actiontype and selection as "not-core"

The MathML4 draft schema makes both attributes optional https://w3c.github.io/mathml/#parsing_maction

as it inherits from the mathml4-core schema,

Despite the full spec flagging the attributes as not-core, the core spec does describe both attributes (but with no defined effect).

So either the full spec should make the attribute optional or the mathml-presentation schema needs to over-ride the imported mathml-core schema and make this required in full.

Given that the behaviour of maction is largely now undefined, I think making the full spec match the schema and match core by making actiontype optional is probably best.

This shows up in test/test-core-03.xml in the mathml-schema repository.

davidcarlisle commented 2 months ago

At the call on 29-08-2024 resolved to consider deprecating maction completely at a future meeting

NSoiffer commented 2 months ago

The 5-9-2024 call discussed deprecation. Everyone agreed that one can't specify an action in a platform independent way, so in some sense the element is pointless. Others felt that maction provides a place to hang actions on, whether they are in JS or done some other way -- it serves as a way for authors to indicate something should be done there. It also provides a place for data to be added that some code can act on (e.g., showing the steps in deriving an equation).

A straw poll was conducted and 2 people wanted it deprecated, three want it kept (aligned with core), and one person was neutral.

davidcarlisle commented 2 months ago

closed by #502