title: Github: Search query including wildcard characters
body: <p>For example, if I want to find where a particular structure is defined inside a given Github repository, I might search <code>struct struct_name {</code>, but as <code>{</code> is simply ignored from search query, result of <code>struct struct_name</code> are displayed. For heavily used structure, it becomes quite difficult to find location of structure definition this way. </p>
  
  <p>I would prefer pulling the repo and grepping the expression, if repo is of reasonably small size, but for large codebase, it might not be viable option.</p>
  
  <p>Any straightforward way?</p>