Mike, Hixie the RDFa WG has an open issue (ISSUE-10 [1]) on the relative priority of @lang and @xml:lang. RDFa 1.1 plans to allow the usage of @lang but one has to define which of the two take precedence, in case both are present on an element with different values. XHTML1.0 has a clear statement on that[2] in Appendix C7: [[ Use both the lang and xml:lang attributes when specifying the language of an element. The value of the xml:lang attribute takes precedence. ]] (RDFa would not advice to use both attributes, as in XHTML1.0, but the precedence issue is relevant.) I tried to look at the (X)HTML5 document, I did find a reference to xml:lang in 7.03[3], but I did not find any reference to the question of relative precedence. I must admit I am not very familiar with the HTML5 document structure, so I may have missed it. Can you help me out and tell me if (a) the HTML WG has a decision on that and, if not, is it o.k. with the group if we follow the statement in [2]? Thanks Ivan [1] http://www.w3.org/2010/02/rdfa/track/issues/10 [2] http://www.w3.org/TR/2000/REC-xhtml1-20000126/#guidelines [3] http://dev.w3.org/html5/markup/common-attributes.html#common.attrs.xml -- Ivan Herman, W3C Semantic Web Activity Lead Home: http://www.w3.org/People/Ivan/ mobile: +31-641044153 PGP Key: http://www.ivan-herman.net/pgpkey.html FOAF : http://www.ivan-herman.net/foaf.rdf vCard : http://www.ivan-herman.net/HermanIvan.vcf
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