kringle

Digging some more,

Since SVG 2, the xlink:href attribute is deprecated in favor of simply href.

https://developer.mozilla.org/en-US/docs/Web/SVG/Element/use. Perhaps this should be removed as well in a future release? Is this the place to make such a suggestion?

It’s unclear to me now whether the W3 Validator error is regarding the xlink:href or the href attribute. I would still assume the latter as the former would only be a warning similar to the mime-type issue previously discussed.

Thanks for the quick reply!

Hmm, can’t speak to ‘use’ at the moment, but “Authors should omit the [mime-type] attribute” since HTML5. See https://www.w3.org/TR/html5/semantics-scripting.html#element-attrdef-script-type

There’s some background at https://stackoverflow.com/questions/2267476/html-script-tag-type-or-language-or-omit-both.

It’s a simple & low priority fix, but still important I think given the quantity of websites using WP sending out the unnecessary code. Not to mention SEO considerations given Google’s nit-picking.

After longer term testing, this plug-in isn’t the problem. Still looking for the solution. Sorry.