[svgwg] Marked-up text from other namespaces in <title> and <desc>

BigBadaboom has just created a new issue for 
https://github.com/w3c/svgwg:

== Marked-up text from other namespaces in <title> and <desc> ==
In the section of the spec on title and desc, the following paragraph 
is buried at the end of the [desc element 
description](https://svgwg.org/svg2-draft/single-page.html#struct-DescElement).

> Description and title elements may contain marked-up text from other
 namespaces. However, authors should not rely on such markup to 
provide meaning to alternative text; only the plain text content is 
currently required to be exposed to assistive technologies.

Since it applies to both title and desc,, I think it would be better 
moved to the intro section of 4.5.1.

----

Also, should it be clearly stated here that if users use elements from
 other namespaces, then those namespaces must be declared - at least 
for standalone documents?

```
<svg ... xmlns:html="http://www.w3.org/1999/xhtml">
   <title>Some <html:strong>important</html:strong> stuff</title>
  ...
</svg>
```

There is language to this effect in the 
[foreignObject](https://svgwg.org/svg2-draft/single-page.html#embedded-ForeignObjectElement)
 section.  But not in this chapter.

----

Finally, I think it might also be good to add a note, such as:

>Authors of SVG documents should be aware that non-browser 
implementations of the SVG standard are not required to support markup
 from other namespaces, such as HTML. So any markup effects applied to
 `<tile>` and `<desc>` content may not be reproduced in those 
circumstances.



Please view or discuss this issue at 
https://github.com/w3c/svgwg/issues/241 using your GitHub account

Received on Saturday, 20 August 2016 14:02:37 UTC