title: reg-expression : word boundary with \t \n \r
body: <p>Best</p>
  
  <p>I'm looking for a regex expression which will map if the word isn't a sub-word.<br>
  logically this might be possible via word boundaries: 
  <code>\bHelloWorld\b</code></p>
  
  <p>but, they do not work when there is a <code>\t</code> or <code>\n</code> in the text.
  e.g.:</p>
  
  <pre><code>HelloWorld is a beautiful word\nHelloWorld\t\t\tHelloWorld HelloWorld \t HelloWorld nopHelloWorld  HelloWorldnop \tnopHelloWorld ...
  
  </code></pre>
  
  <p>Thus in the above example, i would like to find 5 HelloWorld's</p>
  
  <p>extra-info: the \n \t \r are respectively : new line, tab and carriage return
   (thus no 2 individual characters)</p>