title: Is posible to add characters to a string as part of a regular expression (regex)
body: <p>I use an application to find specific text patterns in free text fields in XML records. It uses regex to identify the pattern and then it is tagged in the XML. For a specific project, it would be a great time saver (I am working with about 18 million records) if I could add 2 characters 27 in front of one of the pattern I have to use.</p>
  
  <p>Can this be done or am I just going to have to go the long way around?</p>