- From: David G. Durand <dgd@cs.bu.edu>
- Date: Mon, 23 Jun 1997 14:55:03 -0500
- To: w3c-sgml-wg@w3.org
At 9:34 PM -0500 6/20/97, len bullard wrote: >Please explain this. String substitution is >precisely what they appear to be. So, I am missing >something and wish tutoring. Many strings are not legal values in parameter entities, because, they are not, e.g. complete content model groups. (this makes modular DTDs harder to write, because of the need to wrap things the right way). You can't build an element name by concatenation of PEs and regular characters (this probably is a good thing, but the given the benefits of simple implementation, is not worth it). There are other restrictions -- but I can never remember exactly what they are -- same problem I _used_ to have with whitespace rules. If every string-substitution effect were legal for a PE, then implementation would be so easy it's not an issue. Only WG8 could enable this kind of processing. for valid documents, however. -- David _________________________________________ David Durand dgd@cs.bu.edu \ david@dynamicDiagrams.com Boston University Computer Science \ Sr. Analyst http://www.cs.bu.edu/students/grads/dgd/ \ Dynamic Diagrams --------------------------------------------\ http://dynamicDiagrams.com/ MAPA: mapping for the WWW \__________________________
Received on Monday, 23 June 1997 15:02:36 UTC