title: How do I determine what an alternative whitespace character is in my file
body: <p>In my web application, I process data feeds and I split words by whitespaces (and other key tokens) before indexing the words.</p>
  
  <p>One of my files has a strange whitespace character and my list of key tokens does not catch it, meaning I cannot correctly process that part of the file.</p>
  
  <p>If I look at the file in vi, the text in question looks like this:</p>
  
  <p><code>"SKS Shockboard Front QR Mudguard"</code></p>
  
  <p>The final space, however, is not a regular whitespace, which I can see by running <code>:%s/\ /_/g</code>. The text becomes:</p>
  
  <p><code>"SKS_Shockboard_Front_QR Mudguard"</code></p>
  
  <p>I need to determine what that final whitespace character is. How can I do that?</p>
  
  <p>Thanks</p>