title: Tell Emacs never to insert Tabs
body: <p>I know how I can make it so that hitting  doesn't insert a tab, but spaces.</p>
  
  <p>However, Emacs keeps using tabs for indentation, like:</p>
  
  <pre><code>space space
  space space space
  tab tab space space
  tab tab tab space space space
  </code></pre>
  
  <p>It's a messy mix, how can I configure it so that it <em>never</em> inserts tabs, for anything?</p>