Mixed content considered harmful...
cowan at locke.ccil.org
Tue May 11 20:32:48 BST 1999
Paul Prescod wrote:
> #PCDATA is just a data type that is unconstrained. You should be able to
> mix data type refs, #PCDATA and element type refs in content models with
> impunity (barring real parsing ambiguity). Using old syntax:
> <!ELEMENT SECTION (#PCDATA, P+)>
> <!ELEMENT FIG (#PCDATA|IMG)>
> <!ELEMENT HTML (TITLE,(#PCDATA|P)+)>
I need to be convinced of this.
Can you sketch an algorithm that will convert SGML-style (or &-less
SGML-style) content models involving #PCDATA into content models
involving #PCDATA and #WS, where #WS is a data type that matches
only white space, such that random white space around tags will be properly
Remember that XML parsers are required to pass along all whitespace,
(i.e. it all appears in the infoset, barring whitespace outside the
root element), so it needs to be accounted for somehow, when it is
#PCDATA and when it isn't.
John Cowan http://www.ccil.org/~cowan cowan at ccil.org
You tollerday donsk? N. You tolkatiff scowegian? Nn.
You spigotty anglease? Nnn. You phonio saxo? Nnnn.
Clear all so! 'Tis a Jute.... (Finnegans Wake 16.5)
xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev at ic.ac.uk
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 at ic.ac.uk the following message;
To subscribe to the digests, mailto:majordomo at ic.ac.uk the following message;
List coordinator, Henry Rzepa (mailto:rzepa at ic.ac.uk)
More information about the Xml-dev