title: Diff by developer in one file
body: <p>How I can get ONLY changes maked by one developer? I mean, get the diff between two revisions to all files changed by one developer, and only these changes, not others. The following command get files modified by developer between to dates, but I want diff of these file between two change set</p>
  
  <pre><code>hg log -k $dev -d "$start to $end" --template "{file_mods}{file_adds}\n"
  </code></pre>
  
  <p>If I try:</p>
  
  <pre><code>hg diff -r -1:&lt;rev&gt; $file 
  </code></pre>
  
  <p>I get diff for all developers, not for one.</p>