title: Interactive search/replace regex in Vim?
body: <p>I know the regex for doing a global replace,</p>
  
  <pre><code>     %s/old/new/g
  </code></pre>
  
  <p>How do you go about doing an interactive search-replace in <a href="http://en.wikipedia.org/wiki/Vim_%28text_editor%29" rel="noreferrer">Vim</a>?</p>