title: get a substring with regular expression not left
body: <p>I have a text like this:</p>
  
  <pre><code>a = CreateObject("1-SI")
  foo bar 'blah blah CreateObject("2-No")
  'CreateObject("3-No")
  </code></pre>
  
  <p>with regular expression i want select all <code>CreateObject("...")</code> substrings that don't have the ' character on the left</p>
  
  <p>How can I do this?</p>