[wp-trac] [WordPress Trac] #52463: Inline SVG - foreignObject support

[WordPress Trac]

#52463: Inline SVG - foreignObject support
--------------------------+-----------------------------
 Reporter:  edent         |      Owner:  (none)
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  5.6.1
 Severity:  normal        |   Keywords:
  Focuses:                |
--------------------------+-----------------------------
 WordPress 5.6.1 mangles SVGs which use the [Foreign Object
 element](https://developer.mozilla.org/en-
 US/docs/Web/SVG/Element/foreignObject).

 Consider this minimum viable example:

 {{{
 <svg xmlns="http://www.w3.org/2000/svg"
 xmlns:xlink="http://www.w3.org/1999/xlink">
 <foreignObject>
         <blockquote xmlns="http://www.w3.org/1999/xhtml">
                 Hello
         </blockquote>
 </foreignObject>
 </svg>
 }}}

 WordPress adds in some `</p>` which malforms the image:

 {{{
 <p>
 <svg xmlns="http://www.w3.org/2000/svg"
 xmlns:xlink="http://www.w3.org/1999/xlink">
 <foreignObject></p>
 <blockquote xmlns="http://www.w3.org/1999/xhtml"><p>
         Hello
     </p></blockquote>
 <p></foreignObject>
 </svg></p>
 }}}

 This occurs when pasting the raw SVG into the classic editor.

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/52463>
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