[tei-council] Schematron in Guidelines source?

[David Sewell]

I was just experimenting with using some embedded Schematron in an ODD
file and noticed that in the Guidelines P5 source there is embedded
Schematron in a handful of places (namely, the files addSpan.xml,
damageSpan.xml, delSpan.xml, and moduleRef.xml). For example, in
addSpan.xml:

    <s:pattern name="spanTo_required">
      <s:rule context="tei:addSpan">
        <s:assert test="@spanTo">The spanTo= attribute of <s:name/> is required.</s:assert>
      </s:rule>
    </s:pattern>

I have two questions about this:

1) Is there a reason why there are so few Schematron constraints in the Guidelines?
Are they considered to have official status, or are they more or less experimental?

2) Unless I'm wrong, there needs to be an element

  <s:ns uri="http://www.tei-c.org/ns/1.0" prefix="tei"/>

there in order for Schematron validation to work. (In trying to associate a
TEI Relax NG schema in oXygen as a Schematron schema so that the embedded rules
will be applied, I get the error "Namespace prefix tei has not been declared";
adding the <ns> elements manually to the Relax NG schema fixes this, and checking
of @spanTo works as expected.) Is this worth fixing?

DS

-- 
David Sewell, Editorial and Technical Manager
ROTUNDA, The University of Virginia Press
PO Box 801079, Charlottesville, VA 22904-4318 USA
Courier: 310 Old Ivy Way, Suite 302, Charlottesville VA 22903
Email: dsewell at virginia.edu   Tel: +1 434 924 9973
Web: http://rotunda.upress.virginia.edu/