title: Searching for filenames containing ! (an exclamation mark ) on Windows
body: <p>On Windows 7, the following query used in folder search boxes fails to filter the files in a folder that have a "!" exclamation mark in them.</p>
  
  <pre><code>filename:!
  </code></pre>
  
  <p>Is there any way of doing this search please?  Thanks.</p>