title: Regular expression to find unescaped double quotes in CSV file
body: <p>What would a regular expression be to find sets of 2 unescaped double quotes that are contained in columns set off by double quotes in a CSV file?</p>
  
  <p><strong>Not a match:</strong></p>
  
  <pre><code>"asdf","asdf"
  "", "asdf"
  "asdf", ""
  "adsf", "", "asdf"
  </code></pre>
  
  <p><strong>Match:</strong></p>
  
  <pre><code>"asdf""asdf", "asdf"
  "asdf", """asdf"""
  "asdf", """"
  </code></pre>