xml-dev - XML 1.0 : <!ELEMENT P (#PCDATA | S+)*>

[David Megginson <ak117@freenet.carleton.ca>]

Patrice Bonhomme writes:

 > I am very surprise to see that the XML spec 1.0 cannot authorize
 > the following element declaration (because of the +):
 >
 > <!ELEMENT P     (#PCDATA | S+)*>
 > 
 > I am wrong ?

Entirely correct; however, there is no XML content matched by 

  (#PCDATA | s+)*

that is not also matched by

  (#PCDATA | s)*

More generally,

  (a+)* = (a*)+ = (a*)* = (a?)+ = (a?)* = (a)*

XML forces you to reduce mixed content models to the simplest
representation.


All the best,


David

-- 
David Megginson                 ak117@freenet.carleton.ca
Microstar Software Ltd.         dmeggins@microstar.com
      http://home.sprynet.com/sprynet/dmeggins/

xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@ic.ac.uk
Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/
To (un)subscribe, mailto:majordomo@ic.ac.uk the following message;
(un)subscribe xml-dev
To subscribe to the digests, mailto:majordomo@ic.ac.uk the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa@ic.ac.uk)