src/etc/testcases/taskdefs/filter.xml

<?xml version="1.0"?>

<project name="filter-test" basedir="." default="test1">

  <target name="test1">
    <filter/>
  </target>

  <target name="test2">
    <filter token=""/>
  </target>

  <target name="test3">
    <filter value=""/>
  </target>

  <target name="test4">
    <filter token="" value=""/>
  </target>

  <target name="test5">
    <filter token="year" value="2000" />
    <copy file="filter1.txt" tofile="filtered.tmp" filtering="yes" overwrite="yes" />
  </target>

  <target name="test6">
    <filter token="year" value="2000" />
    <copy todir="./taskdefs.tmp" filtering="yes" overwrite="yes">
      <fileset dir="." includes="filter1.txt" />
    </copy>
  </target>

  <target name="test7">
    <filter token="ROOT" value="root" />
    <copy file="filter2.txt" tofile="filtered.tmp" filtering="yes" overwrite="yes" />
  </target>

  <target name="test8">
    <filter token="ROOT" value="root" />
    <copy todir="./taskdefs.tmp" filtering="yes" overwrite="yes">
      <fileset dir="." includes="filter2.txt"/>
    </copy>
  </target>

  <target name="cleanup">
    <delete dir="taskdefs.tmp" />
  </target>

</project>