_string\n&quot; }
  if ($stderr_string)    { print &quot;&lt;&lt;STDERR&gt;&gt;\n$stderr_string\n&quot; }
  if ($errorfile_string) { print &quot;&lt;&lt;.ERR file&gt;&gt;\n$errorfile_string\n&quot; }</code></pre>

<p>Additional examples are given in examples section of the perltidy distribution.</p>

<h1 id="Using-the-formatter-Callback-Object">Using the <b>formatter</b> Callback Object</h1>

<p>The <b>formatter</b> parameter is an optional callback object which allows the calling program to receive tokeniz