title: vim regex with meta-characters
body: <p>I have the following in a text file:</p>
  
  <pre><code>This is some text for cv_1 for example
  This is some text for cv_001 for example
  This is some text for cv_15 for example
  </code></pre>
  
  <p>I am trying to use regex <code>cv_.*?\s</code> to match <code>cv_1</code>, <code>cv_001</code>, <code>cv_15</code> in the text. I know that the regex works. However, it doesn't match anything when I try it in Vim. </p>
  
  <p>Do we need to do something special in Vim?</p>