title: svn st: how can a file be both `?` and `!`?
body: <p>When I run <code>svn st</code> in my repository directory, one file is listed twice with different codes in the first column:</p>
  
  <pre><code>!       myfile_(2001).csv
  ?       myfile_(2001).csv
  </code></pre>
  
  <p>The help page displayed with <code>svn st --help</code> states...</p>
  
  <pre><code>      '?' item is not under version control
        '!' item is missing (removed by non-svn command) or incomplete
  </code></pre>
  
  <p>These seem to be mutually exclusive codes, so I don't understand how one file can be labeled with both. Please explain how this circumstance might have arisen, and what is the best way to resolve it.</p>