Accepting the 'direction' attribute in an svg element.

[iherman]

At present, epubcheck reports an error on a construction of the sort:

<svg xmlns="http://www.w3.org/2000/svg" direction="rtl" …>

Specification-wise, this is correct, because the definition of the SVG element does not include the direction attribute. However, this seems to be a bug in the SVG specification, which explicitly refers to the usage of that attribute in that element, see the attribute's definition. Furthermore, the examples in the SVG spec use this, and they appear in a number of other places (like MDN). Let alone the fact SVG players do accept it and process it correctly...

I have raised a bug report on the SVG spec; I would think that, pragmatically, epubcheck should indeed accept this attribute.

[iherman]

Actually... I have just realized that the problem may be elsewhere, namely that the direction attribute is not listed as a core attribute in SVG... which is definitely a bug in the spec.

[mattgarrish]

Epubcheck gets its schemas from validator.nu, so you should probably open this request there.

[iherman]

I think the first step is at the SVG WG; until that is solved, validator.nu will not do anything. That is why I did this https://github.com/w3c/svgwg/issues/884.

The question is whether epubcheck should proactively take care (at least temporarily) of this bug to avoid EPUB creators to run into this problem...

[rdeltour]

I'm closing this issue, since SVG content model is no longer normative (since #1365).