title: regex in vimscript
body: <pre><code>let test = 'a href="http://www.google.com"&gt;www.google.com&lt;/a;'
  </code></pre>
  
  <p>In vimscript, how can I get <code>http://www.google.com</code> out of this using a regexp, and store it in another variable?</p>
  
  <p>I can't seem to find any documentation about this.</p>