title: Regex: Does not have/include pattern
body: <p>I have a regex pattern to match an HTML script tag. How can I change this script tag pattern so that the patterns means "input string DOES NOT MATCH" the script tag pattern?</p>
  
  <p>In other words, given a pattern, what is the alteration needed to change the meaning of the pattern to "does not match this pattern"?</p>
  
  <p>For example, if I have a pattern: <code>\d{3}-\d{3}-\d{4}</code>, what is the equivalent pattern for this that means "does not match <code>\d{3}-\d{3}-\d{4}</code>"?</p>