title: there's a way to sort a regular expressions list by specificity?
body: <p>I'm looking for something that allows me to sort a list of regular expression,
  or some documentation and research,</p>
  
  <p>according to their specificity/strictness </p>
  
  <pre><code>/[a-z]+/           // most strict
  /[a-z0-9]+/
  /[a-z0-9èòà]+/     // less strict
  /.*/
  </code></pre>
  
  <p>but how about</p>
  
  <pre><code>/[a-z]+ABC/
  /[a-z0-9]+/
  </code></pre>
  
  <p>which one is less specific than the other?</p>
  
  <p>thank you in advance</p>