[wp-trac] [WordPress Trac] #14226: Add XHTML namespace declaration to Twenty Ten/Twenty Eleven to provide XHTML compatibility

[WordPress Trac]

#14226: Add XHTML namespace declaration to Twenty Ten/Twenty Eleven to provide
XHTML compatibility
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 Reporter:  peaceablewhale         |       Owner:  iandstewart
     Type:  defect (bug)           |      Status:  reviewing
 Priority:  normal                 |   Milestone:  3.2
Component:  Themes                 |     Version:  3.0
 Severity:  normal                 |  Resolution:
 Keywords:  has-patch 2nd-opinion  |
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Comment (by ocean90):

 I thought that this namespace is now standard in HTML5.

 [[BR]]


 > The first thing to discuss is the xmlns attribute. This is a vestige of
 [http://www.w3.org/TR/xhtml1/ XHTML 1.0]. It says that elements in this
 page are in the XHTML namespace, !http://www.w3.org/1999/xhtml. But
 elements in HTML5 [http://www.whatwg.org/specs/web-apps/current-
 work/multipage/infrastructure.html#xml are always in this namespace], so
 you no longer need to declare it explicitly. Your HTML5 page will work
 exactly the same in all browsers, whether this attribute is present or
 not.

 Source: http://diveintohtml5.org/semantics.html#html-element

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Ticket URL: <http://core.trac.wordpress.org/ticket/14226#comment:10>
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