title: UITextView will shorten text?
body: <p>How to know wether <code>UITextView</code> will shorten text because lack of space? I know I can calculate with <code>boundingRectWithSize</code> and <code>sizeThatFit</code>, but what if <code>exclusionPaths</code> of the <code>UITextView</code> is changed. I want lay out string in a polygon, and increase polygon size, until string laid out without shortening. Any idea, how can get a bool return, wether current setup will shorten?</p>
  
  <pre><code>self.tv.textContainer.exclusionPaths = myArrayOfBezierPaths;
  </code></pre>