title: Get previous filename with NodeJS fs.watch rename action
body: <p>Is it possible to get the previous name of a renamed file, using fs.watch in NodeJS? For example:</p>
  
  <pre><code>var fs = require("fs");
  fs.watch("some_file",function(action,filename){
      if (action == "rename" &amp;&amp; filename)
          console.log("what was the old filename, before the rename action?");
  });
  </code></pre>