title: Lua split with regular expression
body: <p>I would like to make a split with lua to values separated with ','. For example:</p>
  
  <pre><code>  names="surname1 surname11, Name1,surname2, Name2,surname3, Name3, Name33"
  </code></pre>
  
  <p>and get:</p>
  
  <pre><code> surname1 surname11, Name1
   surname2, Name2
   surname3, Name3, Name33
  </code></pre>
  
  <p>only when there isn't space or blanck on both sides of ',' should separate it.</p>
  
  <p>Best regards!</p>