title: pdfgrep: searching for sequence with space in between (on mac)
body: <p>I need a pdfgrep query to get string with space in between. Like between the characters "r" and "fr".</p>
  
  <p>i.e it should return strings like: </p>
  
  <pre><code>'r fresh', 'r fry', 'r france'
  </code></pre>
  
  <p>I tried:</p>
  
  <pre><code>pdfgrep -r r fr  &gt; rfr.txt
  </code></pre>