[Bug 54128] Ant 1.8 exec task changes have slowed exec to a crawl

[bugzilla]

https://issues.apache.org/bugzilla/show_bug.cgi?id=54128

--- Comment #3 from Chee Yang Chau <cyc...@gmail.com> ---
The patch doesn't seems to fix all the speed issue in ANT 1.8.

An exec task with redirector and outputfilterchain perform badly in ANT 1.8
even the patch has applied:

<exec executable="${p.tdump.bat}" failonerror="false">
  <redirector output="${p.file.bpl}" append="true">
    <outputfilterchain>
      <headfilter lines="-1" skip="2" />
      <linecontainsregexp>
        <regexp pattern="^IMPORT:"/>
      </linecontainsregexp>

      <replacestring from="IMPORT:" />
      <tokenfilter delimoutput=" ">
        <StringTokenizer />
      </tokenfilter>
    </outputfilterchain>
  </redirector>
</exec>

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