Features

Highlights all Schematron elements: schema, pattern, rule, assert, report, ns, let, value-of, phase, include, and more
Full XPath syntax highlighting inside test, context, select, path, and value attributes:
- Functions (normalize-space, count, not, matches, distinct-values, …)
- Axes (child::, ancestor-or-self::, descendant::, …)
- Keywords and operators (and, or, div, eq, ne, instance of, …)
- Types (xs:string, xs:integer, xs:date, …)
- Variables ($varname)
- String literals and predicates ([position()=1])
Highlights Schematron-specific attributes (id, queryBinding, prefix, uri, role, flag, …) separately from generic XML attributes
Standard XML support: comments, CDATA, processing instructions, entity references, namespace prefixes
Auto-closing pairs for <>, (), [], '', ""
Block comment toggling with

Example

<schema xmlns="http://purl.oclc.org/dsdl/schematron" queryBinding="xslt2">
  <ns prefix="ex" uri="urn:example"/>

  <pattern id="MY_PATTERN">
    <rule context="ex:Invoice/ex:LineItem">
      <assert test="count(ex:Quantity) = 1">
        Each line item must have exactly one quantity.
      </assert>
      <report test="xs:decimal(ex:Amount) &lt; 0">
        Amount must not be negative.
      </report>
    </rule>
  </pattern>
</schema>