title: Gedit - External Tools specify Current file
body: <p>How do I specify the placeholder for the current in Gedit's manage external tools. </p>
  
  <p>For example if I want this in my external tools what should i use?</p>
  
  <pre><code>perl -d:ptkdb my_current_file.pl
  
  pertidy my_current_file.pl
  </code></pre>