ant: antcall from javascript script

build.xml

<project default="main">
	<target name="main">
		<script language="javascript"> <![CDATA[
		task = project.createTask( 'macro' );

		if( task.getOwningTarget() == null ) {
			task.log( "Assigning an owner ..." );
			task.setOwningTarget( self.getOwningTarget() );
			task.log( "Task:  " + task.getOwningTarget() );
		}

		try {
			task.execute();
		} catch(err) {
			task.log( "Execution error: " + err.message );
		}

		]]></script>
	</target>

	<macrodef name="macro">
		<sequential>
			<antcall target="antcall" />
		</sequential>
	</macrodef>

	<target name="antcall">
		<echo>[antcall] succeed</echo>
	</target>

</project>