title: ctags doesn't understand -e option (no exuberant tags option)
body: <p>When I type <code>ctags -e</code> it returns an error saying it doesn't know that command line option. I thought it should know about exuberant tags because <code>etags</code> works on cli.</p>
  
  <p>Also, I recieve the following error: <code>ctags: unrecognized option --langdef=arc</code> and I have the following in my ~/.ctags file:</p>
  
  <pre><code>--langdef=arc
  --langmap=arc:.arc
  --regex-arc=/^\(def ([a-zA-Z1-9_*\/&lt;&gt;-]+)/\1/
  --regex-arc=/^\(= ([a-zA-Z1-9_*\/&lt;&gt;-]+)/\1/
  --regex-scheme=/^\(xdef ([a-zA-Z1-9_*\/&lt;&gt;-]+)/\1/
  </code></pre>