如何在outputfilterchain中替换ant中的newline?

cmd1 | xargs cmd2 (还存储来自 cmd1 ${dependencies} ),其中 cmd1 给出用换行符分隔的路径列表。我不知道怎么在蚂蚁身上做这个。

<project default="main">
    <target name="main">
        <exec executable="echo"
             outputproperty="dependencies">
            <arg value="closure/a.js&#xa;closure/b.js&#xa;closure/c.js"/>
            <redirector>
                <outputfilterchain>
                    <replacestring from="${line.separator}" to=" "/>
                    <!-- None of these do anything either:
                    <replacestring from="\n" to=" "/>
                    <replacestring from="&#xa;" to=" "/>
                    <replaceregex pattern="&#xa;" replace=" " flags="m"/>
                    <replaceregex pattern="\n" replace=" " flags="m"/>
                    <replaceregex pattern="${line.separator}" replace=" " flags="m"/>
                    -->
                </outputfilterchain>
            </redirector>
        </exec>
        <!-- Later, I need to use each file from ${dependencies} as an argument
             to a command. -->
        <exec executable="echo">
          <!--This should turn into 3 arguments, not 1 with newlines.-->
          <arg line="${dependencies}"/>
        </exec>
    </target>
</project>