Value templates in processing instructions 001 (AB)

Tests value templates in XProc 3.1 (no value templates!)

Test ab-vt-003.xml is expected to pass.

The pipeline

<p:declare-step xmlns:p="http://www.w3.org/ns/xproc" version="3.1">
   <p:output port="result"/>
   <p:identity>
      <p:with-input>
         <doc><?pi {40+2}?></doc>
      </p:with-input>
   </p:identity>
</p:declare-step>

Schematron validation

<s:schema xmlns="http://www.w3.org/1999/xhtml" xmlns:s="http://purl.oclc.org/dsdl/schematron" queryBinding="xslt2">
   <s:pattern>
      <s:rule context="/">
         <s:assert test="doc">The root element is not 'doc'.</s:assert>
         <s:assert test="doc/processing-instruction()='{40+2}'">Text is not "{40+2}".</s:assert>
      </s:rule>
   </s:pattern>
</s:schema>

17 Jun 2026, Achim Berndzen: New test for value templates in processing instructions.