9963 2010-06-20 23:57:13 +0000 XML declarations are not permitted in HTML, and thus not in polyglots either 2010-10-05 13:07:46 +0000 1 1 1 Unclassified HTML WG pre-LC1 HTML/XHTML Compat. Authoring Guide (ed: Eliot Graff) unspecified All All RESOLVED FIXED http://dev.w3.org/html5/html-xhtml-author-guide/html-xhtml-authoring-guide.html#PI-and-xml P2 normal FPWD 9962 1 xn--mlform-iua eliotgra eliotgra hsivonen mike public-html-admin public-html-wg-issue-tracking xn--mlform-iua public-html-bugzilla oldest_to_newest 36283 0 xn--mlform-iua 2010-06-20 23:57:13 +0000 Current text: ]] 2. Processing Instructions and the XML Declaration A polyglot document does not use processing instructions. Note that the parsing rules for the XML declaration are not processing instructions and are defined separately in Prolog and Document Type Declaration. [[ Suggested replacement: ]] 2. Processing Instructions and the XML Declaration For HTML-compatibility and HTML5 conformance, Processing Instructions (PIs) and the XML Declaration is forbidden in polyglot markup. [[ JUSTIFICATION: PIs are forbidden in HTML5. And so are the XML declaration. Perhaps we could allow them, if we had a good reason. However, the first aim with the Polyglot spec should be to take for granted what HTML5 specifies – the task of the spec is primarily to *identify* what is compatible. If we disagree with HTML5, then there might also be reason to seek to change HTML5. 36295 1 hsivonen 2010-06-21 08:11:46 +0000 *** Bug 9970 has been marked as a duplicate of this bug. *** 36414 2 eliotgra 2010-06-24 21:01:48 +0000 Replaced with the following: Processing Instructions and the XML Declaration are both forbidden in polyglot markup.