Hi! From: Leif Halvard Silli <xn--mlform-iua@xn--mlform-iua.no> Date: Sat, 17 Apr 2010 02:45:31 +0200 > I highly recommend > reading Johannes Koch's presentation of the status of the empty > xml:lang="" attribute. http://lists.w3.org/Archives/Public/public-rdfa/2010Apr/0009 I looked quickly over Koch's article: I saw that lang=null is not valid according to strict DTD XHTML 1.0 From: Johannes Koch <koch@w3development.de> Date: Wed, 14 Apr 2010 10:28:43 +0200 > Hi Stephane > This indicates that (formally) an empty string is not a NMTOKEN and so > is no valid value for the xml:lang attribute as defined in the XHTML 1.0 > Strict DTD. Elsewhere however Koch notes that: > in languages based on XHTML Modularization 1.1, the empty string is > (formally) DTD-valid and XML-Schema-valid. and that: > in "XHTML 1.1 + RDFa" the empty string is (formally) DTD-valid. As I think you know, Richard Ishida suggests using lang="und" where lang= the empty string is not supported in xml; otherwise his article recommends the use of the emptry string that the working group is now trying to make invalid; see: http://www.w3.org/International/questions/qa-no-language Best, C. E. Whitehead cewcathar@hotmail.comReceived on Sunday, 18 April 2010 23:19:48 GMT
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