title: Perl GetOptions() case sensitivity
body: <pre><code>GetOptions(
      "r|repo=s"       =&gt;   \$repo,
      "R|list-repos"   =&gt;   \$list,
  );
  </code></pre>
  
  <p>When I call this script with <code>-r qwe</code> option, <code>$list</code> is updated to 1, which is not what I expect.</p>
  
  <p>How can I make GetOpt case sensitive?</p>