Test 
         p:for-each with nested 
         p:output
         that contains default bindings. (ported from 1.0-testsuite/for-each-010)
Test ab-for-each-010.xml is expected to pass.
<p:declare-step xmlns:p="http://www.w3.org/ns/xproc" version="3.0">
   <p:output port="result">
   <p:for-each name="loop">
      <p:with-input>
         <p:empty/>
      </p:with-input>
      <p:output port="out">
         <p:inline>
            <bar/>
         </p:inline>
      </p:output>
      <p:sink/>
   </p:for-each>
   <p:count/>
</p:declare-step>
<s:schema xmlns="http://www.w3.org/1999/xhtml" xmlns:s="http://purl.oclc.org/dsdl/schematron" queryBinding="xslt2">
   <s:ns prefix="c" uri="http://www.w3.org/ns/xproc-step">
   <s:pattern>
      <s:rule context="/*">
         <s:assert test="self::c:result">The pipeline root is not c:result.</s:assert>
         <s:assert test="string(.) = '0'">The result isn't "0"</s:assert>
      </s:rule>
   </s:pattern>
</s:schema>
Added attribute 'queryBinding' to schematron's schema.
Initial test