[wp-trac] [WordPress Trac] #33511: Bad value for attribute lang on element html

[WordPress Trac]

#33511: Bad value for attribute lang on element html
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 Reporter:  Chouby        |       Owner:
     Type:  defect (bug)  |      Status:  new
 Priority:  normal        |   Milestone:  Awaiting Review
Component:  I18N          |     Version:  4.3
 Severity:  normal        |  Resolution:
 Keywords:                |     Focuses:
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Comment (by Chouby):

 I went on with my investigations. If I well understood the [http://www
 .rfc-editor.org/rfc/bcp/bcp47.txt BCP47], we could use private use
 subtags. Private use subtags are introduced by a 'x'.

 As such, we could keep a different locale for formal German represented
 by: `de-DE-x-formal`
 If we need to keep a separate locale for Catalan (Balear), we could use
 something as: `ca-x-ES-IB` (ES-IB beeing the
 [https://en.wikipedia.org/wiki/ISO_3166-2:ES ISO 3166-2] code for Balearic
 Islands.

 Both new proposed codes validate at https://validator.w3.org/

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Ticket URL: <https://core.trac.wordpress.org/ticket/33511#comment:1>
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