title: How to get the list of changelist already integrated?
body: <p>There is <code>interchanges</code> command in perforce which lists changelists between two branches that have not been integrated with the convenience of a <code>branchspec</code>.</p>
  
  <p>Is there something that shows the changelists that have been integrated something like the reverse of <code>interchanges</code> and also works with a <code>branchspec</code>?</p>
  
  <p>More interested in terminal perforce rather than p4v.</p>
  
  <p>Thanks</p>