title: function name + tab does not return docstring in IPython
body: <p>In IPython, I am used to write</p>
  
  <blockquote>
    <p>function(</p>
  </blockquote>
  
  <p>and then strike a tab, and get the contents of the docstring and a list of the named arguments. However, this stopped working since I installed IPython 2.0. Is there an explanation or a know fix?</p>