title: UITextField placeholder tail truncation
body: <p>Please help truncating the placeholder of a <code>UITextField</code> like it does the <code>UILabel</code> with <code>UILineBreakModeTailTruncation</code>.</p>
  
  <p>I would post some code, but.. there's nothing to post... I don't even know what to start trying.</p>
  
  <p>There's no problem with tail truncation of a label, but the placeholder of the textfield... no idea.</p>
  
  <p>What's the use:</p>
  
  <p>The placeholder has to list some cities:</p>
  
  <pre><code>"Search in Munchen, Stanberg, Frankfurt, Blablabla"
  </code></pre>
  
  <p>The textfield truncates its placeholder to:</p>
  
  <p><code>"Search in Munchen, Stanberg, Frankfurt,"</code> ( notice the last comma )</p>
  
  <p>I gotta do it like this:</p>
  
  <pre><code>"Search in Munchen, Stanberg, Frankfurt, Bla..."
  </code></pre>
  
  <p>Even if I somehow delete the "last" comma, I need the rest "Bla...", in order to suggest the user that the list is not finished with Frankfurt.</p>
  
  <p>Any help is appreciated. Thanks in advance. </p>