title: perl style regex to match nth item in a list
body: <p>Trying to match the third item in this list:</p>
  
  <pre><code>/text word1, word2, some_other_word, word_4
  </code></pre>
  
  <p>I tried using this perl style regex to no avail:</p>
  
  <pre><code>([^, ]*, ){$m}([^, ]*), 
  </code></pre>
  
  <p>I want to match ONLY the third word, nothing before or after, and no commas or whitespace. I need it to be a regex, this is not in a program but UltraEdit for a word file.</p>
  
  <p>What can I use to match some_other_word (Or anything third in the list.)</p>