[wp-trac] [WordPress Trac] #25863: Core not working when served as application/xhtml+xml

[WordPress Trac]

#25863: Core not working when served as application/xhtml+xml
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 Reporter:  pnutus        |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  Validation    |     Version:  3.7.1
 Severity:  normal        |  Resolution:
 Keywords:                |
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Comment (by bpetty):

 Related (for bundled themes): #14226
 Also see: #18202 (HTML5 doctype for core)

 It's not deprecated, but it is supposed to be irrelevant to HTML documents
 (as far as I understand it). However, I could see how some servers might
 interpret this as xhtml+xml since this is how you're supposed to define
 [http://dev.w3.org/html5/html-polyglot/html-polyglot.html polyglot markup]
 now, which is implied to be XHTML.

 Note that #14226 points out that this could affect use of MathML and SVG.
 But I generally still agree with @nacin that as a CMS, WordPress shouldn't
 even be trying to support XHTML.

 I'm fairly certain we should remove it (and will have a patch for it in a
 bit), but it should also be possible to prevent your server configuration
 from assuming it's XHTML, and serving it as `application/xhtml+xml`
 (WordPress is not responsible for this). What is your server running?

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Ticket URL: <http://core.trac.wordpress.org/ticket/25863#comment:1>
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