title: How can I get a diff of all edits made by a particular author since a particular date in Perforce?
body: <p>In Perforce, I'm trying to find out what edits were made to the code for a particular long-running task. I know that all the changes were made by the same author, and that he was almost invariably working on this particular task.</p>
  
  <p>Given that, I'm trying to find a way to do a diff of all the edits he has made to the code since a particular date. How would I go about it please?</p>
  
  <p>(An alternative might be a way to get a unified diff of all the changes made in a number of specified changelists - I could then sit down and specify all the changelists manually and get a sensible result at the end of it.)</p>