How do I view the update history for a single file?

  1. Go to the History View (menu View -> History View).
  2. In the search field enter the name of the file you are interested in (or anything else you are interested in).

The History View will show just the changes which involve the search term. You can double click on a given changeset and the differences for that changeset (with respect to its parent) will open in your differences tool.