title: Emacs org-mode agenda filter doesn't work. :(
body: <p>I have exactly this org file:    </p>
  
  <pre><code>* TODO EAT                                 :home:
  ** make 
  ** me
  ** a
  ** sandwich
  * TODO CODE                                :home:
  ** make
  ** me
  ** code
  * TODO SLEEP                                :bed:
  ** dream with
  ** dragons
  * TODO REPEAT                              :universe:
  </code></pre>
  
  <p>I want to filter it by tags, so I:</p>
  
  <ol>
  <li><code>M-x + org-agenda</code></li>
  <li><code>m</code></li>
  <li><code>home</code></li>
  </ol>
  
  <p>Then nothing. As if there wasn't any item tagged with home. Although, as you can see, there is.</p>
  
  <p>I'm I doing something wrong?
  I can not filter by anything, even the "All TODO's" option displays no items at all. </p>
  
  <p>I really want to get into org-mode. Please help me :(</p>