ant/src/etc/testcases/taskdefs/macrodef.xml

<project>

  <target name="simple">
    <macrodef name="my.echo">
      <attribute name="text"/>
      <sequential>
        <echo message="${text}"/>
      </sequential>
    </macrodef>
    <my.echo text="Hello World"/>
  </target>

  <target name="text">
    <macrodef name="my.echo">
      <attribute name="text"/>
      <sequential>
        <echo>${text}</echo>
      </sequential>
    </macrodef>
    <my.echo text="Inner Text"/>
  </target>

  <target name="uri">
    <macrodef name="echo" uri="abc">
      <attribute name="text"/>
      <sequential>
        <echo message="${text}"/>
      </sequential>
    </macrodef>
    <x:echo xmlns:x="abc" text="Hello World"/>
  </target>

  <target name="nested">
    <macrodef name="nested">
      <element name="nested"/>
      <sequential>
        <nested/>
      </sequential>
    </macrodef>

    <nested>
      <nested>
        <echo>A nested element</echo>
      </nested>
    </nested>
  </target>

  <target name="xpathstyle">
    <macrodef name="testing" attributestyle="xpath">
      <attribute name="abc"/>
      <sequential>
        <echo>attribute is @abc@abc</echo>
      </sequential>
    </macrodef>

    <testing abc="this is a test"/>
  </target>
</project>