Use DOM definition of Attr/reflect

[dontcallmedom]

While it doesn't export it, the HTML spec currently redefines the 'reflect' concept, which creates possibly confusing duplication with the definition in the DOM spec. This proposes to use instead the DOM spec definition.

It doesn't remove the local explanation since at the moment it is part of a dedicated section on the topic.

This was noticed in w3c/mathml-core#179

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/canvas.html ( diff )
/common-dom-interfaces.html ( diff )
/common-microsyntaxes.html ( diff )
/dom.html ( diff )
/edits.html ( diff )
/embedded-content-other.html ( diff )
/embedded-content.html ( diff )
/form-control-infrastructure.html ( diff )
/form-elements.html ( diff )
/forms.html ( diff )
/grouping-content.html ( diff )
/iframe-embed-object.html ( diff )
/image-maps.html ( diff )
/infrastructure.html ( diff )
/input.html ( diff )
/interaction.html ( diff )
/interactive-elements.html ( diff )
/media.html ( diff )
/obsolete.html ( diff )
/scripting.html ( diff )
/semantics.html ( diff )
/tables.html ( diff )
/text-level-semantics.html ( diff )
/urls-and-fetching.html ( diff )

[domenic]

This seems incorrect? The two definitions are totally different. The DOM one is only meant for use by DOM (which is why it's not exported); the HTML one is the one other specs should use.

[dontcallmedom]

The DOM one is only meant for use by DOM (which is why it's not exported); the HTML one is the one other specs should use.

This may be the intent, but the specs are marked up exactly the other way (hence my assumption behind the PR):

• the DOM specs uses data-export on the reflect <dfn> (although that seems to have been done as part of batch export of all definitions)
• the HTML spec doesn't have export set on its reflect <dfn>

[annevk]

@fred-wang what does MathML need from reflect? Just the top-level definition or should some of the other concepts also be exported?

[fred-wang]

@annevk I guess @bkardell would know better the details, but the rule of thumb is that MathML tries to align on HTML so we probably want the HTML definition for MathML. And currently, it's only used in one place for attributes that exist in HTML (from GlobalEventHandlers and HTMLOrForeignElement), so only the top-level definition: https://w3c.github.io/mathml-core/#dom-and-javascript

[annevk]

I see, thanks!

That usage seems bogus so I filed w3c/mathml-core#188.

Closing this for now. We might still export it, but that would require a different PR.