- From: Terry Allen <tallen@sonic.net>
- Date: Sat, 3 May 1997 17:21:27 -0700
- To: w3c-sgml-wg@w3.org, xml-dev@ic.ac.uk
Now available at http://www.sonic.net/~tallen/xdb03.zip is a DTD derived from DocBook 3.0 that I believe is valid XML. Thanks to Norbert Mikula for pointing out that the %local.foo.foo; parameter entities, which are defined with the content "", are illegal per XML-lang production 46. The sole difference between XDB 0.3 and XDB 0.2 (which I've removed) is the deletion of these parameter entities and an updated copyright notice. This change blows away the DocBook customization mechanism. The purpose of distributing this DTD is solely to determine what constitutes a valid XML DTD. Obviously some other method of customization will be required (unless the SGML ERB can be persuaded to relax its strictures on empty parameter entities). The quick hack that comes to mind is to define these pe's as containing a placeholder element ZZZZZ, which would be declared <!ELEMENT ZZZZZ EMPTY> without an ATTLIST. As I remarked earlier, I'd be happy to hear of other solutions. As the DTD is fairly useless without the customization mechanism, this version cannot be considered progress on the road to a proper XMLlated DocBook that the Davenport Group would want to distribute. Mea culpa. Regards, Terry Allen Electronic Publishing Consultant tallen[at]sonic.net http://www.sonic.net/~tallen/ Davenport and DocBook: http://www.ora.com/davenport/index.html T.A. at Passage Systems: terry.allen[at]passage.com
Received on Saturday, 3 May 1997 20:18:35 UTC