title: Does C regular expression support lookahead?
body: <p>I am trying to use regular expression in c/c++ using regex.h.
  I am trying to use lookahead options, for example:</p>
  
  <pre><code>(?=&gt;#).*
  </code></pre>
  
  <p>in order to extract strings after a '#'</p>
  
  <p>For some reason it fails to find any matches.
  Does regex.h supports lookahead/lookbehind? is there another library I can use?</p>
  
  <p>I am using regex.h, on linux.</p>