title: iOS UITextView: Increase line spacing without changing the height of the cursor?
body: <p>I've been banging my head against a wall on this for too long. I'd like to create double-spaced input text with the cursor staying the same as the font's line height.</p>
  
  <p>I've tried a number of approaches:</p>
  
  <ul>
  <li>Using NSLayoutManager's delegate -layoutManager:lineSpacingAfterGlyphAtIndex:withProposedLineFragmentRect:</li>
  <li>Using an attributed string and setting NSParagraphStyle's -lineHeightMultiple and -lineSpacing properties </li>
  <li>Using a custom NSTextStorage that also tried setting that paragraph style.</li>
  </ul>
  
  <p>...but they all end up with a carat that's just too big, either extending into the whitespace above or the whitespace below each line.</p>
  
  <p>Any thoughts on what I can try next to achieve this layout?</p>