title: How can I force Ruby to show a full stack trace?
body: <p>I just got this error message:</p>
  
  <pre><code>...
  from c:/ruby/lib/ruby/gems/1.8/gems/...
   ... 10 levels...
  from c:/ruby/lib/ruby/gems/1.8/gems/...
  ...
  </code></pre>
  
  <p>and the bug (of course) is hidden somewhere in <code>... 10 levels...</code>.</p>
  
  <p>How can I force Ruby to show a full stack trace?</p>