title: Regular expression, replace all commas between double quotes
body: <p>I have this string:</p>
  
  <pre><code>1001,"Fitzsimmons, Des Marteau, Beale and Nunn",109,"George","COD","Standard",,109,8/14/1998 8:50:02
  </code></pre>
  
  <p>What regular expression would I use to replace the commas in the
  <code>"Fitzsimmons, Des Marteau, Beale and Nunn"</code> with a pipe <code>|</code> so it is:</p>
  
  <pre><code>"Fitzsimmons| Des Marteau| Beale and Nunn"
  </code></pre>
  
  <p>Should have clarified, I am doing a split on this string using the commas, so I want <code>"Fitzsimmons, Des Marteau, Beale and Nunn"</code> to be a string. I plan to replace the <code>|</code> with a comma after I have split it.</p>