Static variables/option 025

The pipeline

<p:declare-step xmlns:dummy="http://dummy"
                xmlns:err="http://www.w3.org/ns/xproc-error" xmlns:p="http://www.w3.org/ns/xproc"
                xmlns:t="http://xproc.org/ns/testsuite/3.0" name="main" version="3.0">
   <p:output port="result"/>
   <p:declare-step type="dummy:test1">
      <p:output port="result"/>
      <p:option static="true" name="static-option"
                select="15"/>
      <p:identity name="test1-one">
         <p:with-input>
            <doc>{$static-option}</doc>
         </p:with-input>
      </p:identity>
   </p:declare-step>
   <dummy:test1 name="one"/>
   <p:identity name="two">
      <p:with-input>
         <doc>{$static-option}</doc>
      </p:with-input>
   </p:identity>
   <p:wrap-sequence wrapper="result">
      <p:with-input pipe="@one @two"/>
   </p:wrap-sequence>
</p:declare-step>