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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: Layers, again (was Re: fixing (just) namespaces and validation)
 At 05:30 PM 9/8/99 -0400, David Megginson wrote: >> >There was no warning, however, that DTD syntax might change. >> >> I think you're overestimating the syntax changes being described. >>[...PIs, not syntax changes] > >My fault: I didn't realise that your proposed changes used only PIs. >I'm not sure that I see how the documents could still be valid from >the XML 1.0 perspective, though, and if not, the new documents would >still be backwards incompatible with some (many?) existing XML 1.0 >implementations. I'm not sure I'm quite off the hook yet. While the PI approach is nice because it doesn't have many side effects (it's easily ignored), I'm still trying to figure out if the processing shift might produce odd results in some situations. I think that most of the time, it'll be okay, but I'm still hunting for lurking weirdness. My _hope_ is that it'll be 100% backwards compatible with XML 1.0 DTD validation if the prefixes don't change, and that it'll let through the cases where the prefix changed but nothing else did. In that sense, it'd be incompatible - documents with good namespace matches would still spit out from validating XML 1.0 processors. That doesn't seem any worse than the current situation, but it's worth more thought. Simon St.Laurent XML: A Primer (2nd Ed - September) Building XML Applications Inside XML DTDs: Scientific and Technical Sharing Bandwidth / Cookies http://www.simonstl.com xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To (un)subscribe, mailto:majordomo@i... the following message; (un)subscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...) 
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