title: Emacs: globally enable whitespace-mode
body: <p>I want globally enable whitespace-mode. I have tried this in my .emacs:</p>
  
  <pre><code>(require 'whitespace)
  (setq-default whitespace-style '(face trailing lines empty indentation::space))
  (setq-default whitespace-line-column 80)
  (setq global-whitespace-mode 1)
  (whitespace-mode 1)
  </code></pre>
  
  <p>but without success... I able to enable it via M+x whitespace-mode, but I want it to enable it globally... Any suggestions? I am using GNU Emacs 23.3.1 .</p>