title: Syntax highlighting in emacs with perl .t files
body: <p>I am using GNU Emacs 24.2.1 to write some perl code. Syntax highlighting works well for files with extension <code>.pl</code> and <code>.pm</code>,  but unfortunately not for perl unit tests (<code>.t</code> extension), </p>
  
  <p>Is there a simple way to automatically turn on perl syntax highlighting whenever I open a <code>.t</code> file?</p>