Embedding Content as Element Content or As An Attribute Value

[Christopher D. Manning]

On 8 January 1998, Tim Bray wrote:
 > ><!ELEMENT Foo (bar1 | bar2 | bar3)*>
 > 
 > any number of bar1, bar2, and bar3 elements in any order
 > 
 > I agree that the semantic of '|' is not as it is in some other
 > systems. -T.

I disagree.  The | _is_ meaning bar1 or bar2 or bar3 -- one only, but it
scopes inside the Kleene star operator, which means any number of
repetitions of the stuff before it, which therefore gives the
semantics above.

Chris Manning

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/
To (un)subscribe, mailto:majordomo at ic.ac.uk the following message;
(un)subscribe xml-dev
To subscribe to the digests, mailto:majordomo at ic.ac.uk the following message;
subscribe xml-dev-digest
List coordinator, Henry Rzepa (mailto:rzepa at ic.ac.uk)