title: Code fragment repository search on github.com
body: <p>How can I search for code fragments on <a href="https://github.com/search" rel="noreferrer">github.com</a>? When I search for <code>MSG_PREPARE</code> in the repository <code>ErikZalm/Marlin</code> github shows up <a href="https://github.com/search?q=repo:ErikZalm/Marlin%20MSG_PREPARE&amp;repo=&amp;langOverride=&amp;start_value=1&amp;type=Everything&amp;language=" rel="noreferrer">nothing</a>. </p>
  
  <p>I'm using the repository code search syntax described on <a href="https://github.com/search" rel="noreferrer">https://github.com/search</a> with </p>
  
  <pre><code>repo:ErikZalm/Marlin MSG_PREPARE
  </code></pre>
  
  <p>No results, but <code>MSG_PREPARE</code> can be found inside this repository <a href="https://github.com/ErikZalm/Marlin/blob/Marlin_v1/Marlin/ultralcd.cpp#L2446" rel="noreferrer">here</a>. Am I missing something? Is there no code search on github.com?</p>