proposal/sandbox/input/src/etc/testcases/taskdefs/input.xml

<?xml version="1.0"?>

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

  <target name="test1">
    <input>Press Return key to continue...</input>
  </target>

  <target name="test2">
    <input message="Press Return key to continue..." />
  </target>

  <target name="test3">
    <input message="All data is going to be deleted from DB continue?"
           validargs="y,n"
           />
  </target>

  <target name="test5">
    <input message="All data is going to be deleted from db continue (y/n)?"
           validargs="y,n"
           />
  </target>

  <target name="test6">
    <input message="Please enter db-username:"
           addproperty="db.user"
           />
  </target>

</project>