title: Elisp List Contains a Value
body: <p>How do you check, in elisp, if a list contains a value?  so the following would return t:</p>
  
  <pre><code>(contains 3 '(1 2 3))
  </code></pre>
  
  <p>but</p>
  
  <pre><code>(contains 5 '(1 2 3))
  </code></pre>
  
  <p>would return nil. </p>