title: How to write a global save hook for Emacs?
body: <p>I usually have to deal with a lot of people sending me Windows files and I'm tired of having to
  convert them by hand, usually by doing:</p>
  
  <pre><code> C-x RET f unix RET
  </code></pre>
  
  <p>Is there any way to add a global hook (for all modes) to automatically do this on saves?</p>