title: Remove <space><comma> but not <space><space><comma>
body: <p>I have a CSV file that has un-encapsulated text strings, some that contain commas.  This of course throws off the CSV parser.</p>
  
  <p>My CSV has the following patterns:</p>
  
  <ul>
  <li>A column with no value will contain 2 spaces</li>
  <li>A column with a value will look like <code>&lt;comma&gt;&lt;value&gt;&lt;comma&gt;</code>, with no spaces between the value and the commas.</li>
  </ul>
  
  <p>All of the errant commas that I need to remove (that are contained in text strings) are either preceded by or followed by a single space.  Example:</p>
  
  <pre class="lang-none prettyprint-override"><code>&lt;somevalue,Check this out, I think you'll like it.,&lt;somevalue&gt;
  </code></pre>
  
  <p>I need to regex to replace that <code>&lt;space&gt;&lt;comma&gt;</code> with just a <code>&lt;space&gt;</code> or a <code>&lt;hyphen&gt;</code>.  But I can't just search on comma> because that will catch all of the valid  instances.</p>