title: newline char \n for <textarea> placeholder is ignored on Safari
body: <p>I see that this question has been asked here already, but no answer was provided so far.
  I'm trying to add a multi-line placeholder for a textarea using jQuery.
  My code looks like this:</p>
  
  <pre><code>$('#ticket_id').attr('placeholder' , 'first line \nsecond line \nthird line')
  </code></pre>
  
  <p>this works great in Chrome, but fails to work on Safari.
  I tried using &#10; instead of \n but that failed to work at chrome as well.
  \r\n did the same as \n, worked for chrome but not for Safari.</p>
  
  <p>Any ideas what else can I do?</p>