plugins/ant/tests/data/psi/rename/param.xml

<project name="testProject" default="test">
  <target name="test">
    <antcall target="a">
      <param name="<ren>p" value="v"/>
    </antcall>
  </target>
  <target name="a">
    <echo message="${p}"/>
  </target>
</project>