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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: SGML->XML->? (was Re: SML: Second Try)
 I think most people on this list are willing to discuss this issue - that's why it's a permathread. But no one has been able to achieve any kind of consensus on what can be safely thrown out. Some points on this: 1. You say "Lets abolish mixed content." This makes anyone who uses XML for document markup plotz. Are you saying Docbook, XHTML, and FO are not welcome in your subset? 2. PIs are usually first against the wall in most people's subsets (see SOAP). I noticed you see them as useful. 3. Dropping the XML Declaration ( the <?xml ... ?> thingy ) has non-obvious side effects. This is how you declare the character encoding of your document. Are you suggesting that all XML documents (in your subset) should be in either UTF-16 or UTF-8? Will the people you hope to work with accept this - or have you just alienated most east asians? 4. The few things that everyone pretty much agrees can be dropped, usually are using the "parse and ignore" method. When was the last time you saw anyone paying attention to Notations or Attribute declarations (other than ID & IDREF). While this discussion will no doubt go on for ages, I have to say I just don't see the point. If you don't like mixed content, just create grammars that never use it. If you don't like PIs, don't put them in your document, and ignore them if you receive a document with them. If external entity processing scares you, set the switch on your parser to not resolve them. Generic processing can look at documents as XML, and support all these weird features. Specific processing can operate on whatever subset you like. Let a thousand subsets bloom! -Wayne Steele >From: "Seairth Jacobs" <seairth@s...> >So would the XML community be okay with defining a subset of XML? For >instance, suppose we defined a formal subset that did not contain DTDs >(which implicitly also means, id, idref, notations, etc.) or mixed content >and did not use the <?xml?> PI. Technically both XML and SGML processors >would understand it, just as SGML understands XML. But such a subset would >be used in ways that XML wouldn't, just as XML is used in ways that SGML >isn't. _________________________________________________________________ The new MSN 8: advanced junk mail protection and 2 months FREE* http://join.msn.com/?page=features/junkmail 
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