Re: XML Torture Test: Parsers Fail
Chris Olds wrote: > > I'm not so sure that IE5 is wrong in reporting an error (when unreferenced > General Entities are DTD chunks). The XML REC says (in 4.3.2 "Well-Formed > Parsed Entities") > >> "An external general parsed entity is well-formed if it matches the >> production labeled extParsedEnt", which is an optional TextDecl  >> followed by 'content' . Non-validating processors are not required to >> read external entities, but they are not forbidden to read them if they are >> not referenced. > > While I don't think this is necessarily the best choice, I think it is just > that - an implementation choice. I don't see anything in the spec that says "don't read and validate external parsed entities if they're not used." And in fact, the spec seems to say that, in order to be valid, they must (whether used or not) match certain productions in the grammar. Someone please correct me if there is explicit language to the contrary. My feeling is that this is another one of those cases where the XML spec is typically interpreted in terms of SGML practice, but where nothing in the XML spec itself actually mandates such interpretation. And in fact, one can make a good case for reading in and checking exter- nal entities even if they're not "used." If you fail to do this, you can end up with a DTD that itself triggers errors when used with some docu- ments, but not others. Worse yet, you can end up with a DTD that was thought to be valid, but which fails unexpectedly when used with a new document instance. -- Richard Goerwitz PGP key fingerprint: C1 3E F4 23 7C 33 51 8D 3B 88 53 57 56 0D 38 A0 For more info (mail, phone, fax no.): finger richard@g... 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...)
PURCHASE STYLUS STUDIO ONLINE TODAY!
Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!
Download The World's Best XML IDE!
Accelerate XML development with our award-winning XML IDE - Download a free trial today!
Subscribe in XML format