title: Always show the cancel button in a UISearchBar
body: <p>I use a table view with a <code>UISearchDisplayController</code> in conjunction with a <code>UISearchBar</code>. The search bar automatically hides the cancel button when inappropriate, but I'm using the view controller in a modal state - so I would like to always show the cancel button and use it to pop the modal view controller when the search is cancelled.</p>
  
  <p>Is there a way to force the cancel button to stay visible without creating a custom search bar?</p>