[wp-trac] [WordPress Trac] #5393: language_attributes() template tag should be able to output lang and xml:lang attributes together

[WordPress Trac]

#5393: language_attributes() template tag should be able to output lang and
xml:lang attributes together
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 Reporter:  ionfish      |       Owner:  anonymous
     Type:  enhancement  |      Status:  new      
 Priority:  low          |   Milestone:  2.5      
Component:  i18n         |     Version:  2.4      
 Severity:  minor        |    Keywords:           
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 The [http://www.w3.org/TR/xhtml1/#C_7 XHTML spec] states that one should

   Use both the lang and xml:lang attributes when specifying the language
 of an element. The value of the xml:lang attribute takes precedence.

 Currently the language_attributes() function will only output one or the
 other, depending on the html_type option.

 One way of dealing with this issue would be to add a parameter to the
 function allowing theme authors to specify that the template in which it
 is used is XHTML (since as far as I know there is no way to determine this
 through checking the WordPress backend).

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Ticket URL: <http://trac.wordpress.org/ticket/5393>
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