title: CTFrameGetVisibleStringRange Incorrectly Counting Spaces at End of String?
body: <p>I'm working with <code>CoreText</code> and I notice that <code>CTFrameGetVisibleStringRange</code> incorrectly counts spaces at the end of the string which are NOT visible in the frame as being visible. FYI, I am adding the space as a string @" " using <code>insertAttributedString</code> to the end of my <code>NSMutableAttributedString</code>. Does anyone know how to fix this?</p>
  
  <p>UPDATE: Still haven't found a solution to this, is this the intended behavior? Or this just a bug?</p>