title: How can I search only files that start with a certain character using ag?
body: <p>Let's say I have two files in a directory:</p>
  
  <pre><code>.test
  test.txt
  </code></pre>
  
  <p>How can I limit my <code>ag</code> search to only files that begin with a <code>.</code>?</p>
  
  <p>I have tried a number of patterns, but none worked.</p>