Hi, This is a QA Review comment for "XHTML 2.0" http://www.w3.org/TR/2006/WD-xhtml2-20060726/ 2006-07-26 8th WD
About http://www.w3.org/TR/2006/WD-xhtml2-20060726/conformance.html#s_conform_user_agent "If a user agent encounters an element it does not recognize, it must continue to process the content of that element. If this "unrecognized" element uses recognized attributes, those attributes must be processed with their usual semantics." What is a recognized attribute? Except specific attributes like xml:id, xml:lang, etc. All attributes have a meaning only under the scope of a specific element, if the element is not recognized, how the attribute can be recognized? <html xmlns="http://www.w3.org/2002/06/xhtml2/"; xmlns:html="http://www.w3.org/1999/xhtml"; xml:lang="en"> <head> <title>Minimal XHTML 2.0 Document</title> </head> <body> <p>some text</p> <html:object html:data="..." src="toto.png" srctype="image/png">...</html:object> </body> </html> "7. When rendering content, user agents that encounter characters or character entity references that are recognized but not renderable should display the document in such a way that it is obvious to the user that normal rendering has not taken place." Obvious is not a term for interoperability. It is not a testable fact. "Note that this specification does not generally specify the behavior of conforming implementations when presented with non-conforming documents. This is either defined by an underlying specification (e.g., [XML]) or left to the implementor." That is bad, plus the fact it is contradictory. A strictly XHTML 2.0 conforming document will not have foreign markup: "A strictly conforming XHTML 2.0 document is a document that requires only the facilities described as mandatory in this specification" but the User agent conformance talks about "unrecognized" elements, which makes a non conforming document. -- Karl Dubost - http://www.w3.org/People/karl/ W3C Conformance Manager, QA Activity Lead QA Weblog - http://www.w3.org/QA/ *** Be Strict To Be Cool ***
