title: How to create a patch from the diff between two patches
body: <p>I have made modifications in my local SVN working copy, created a patch, and submitted that patch to the repository maintainer.</p>
  
  <p>The repository maintainer merged that patch in, but my access to that server is down for another week (my VPN token expired and getting a new one will take some time) so until it's back up again I can't update my working copy.</p>
  
  <p>In the meantime, I've made further modifications to my local working directory and have created a second patch.</p>
  
  <p>How can I get the difference between the two patches as a .patch file to send the repo maintainer to apply my latest changes?</p>
  
  <p>Alternatively, is there a way I can apply an SVN update to my local repo in an offline state (e.g. files emailed to me).</p>
  
  <p>Note: I'm on Windows, using TortoiseSVN but will try any tools that get me to where I need to be.</p>