SlickEdit has a nice backup tool that captures backups of files on a regular basis.  Whenever you need to restore a backup of a file, simply go to the backup explorer tool window (on the same side as the solution explorer) and select one of the backups to compare your file against its.  This editor is very handy to have; you can select the entire file and bring over the past backup, or you can select individual lines to bring over, depending on the type of backup restore you need.

The diff is pretty easy to use, and it will even highlight the new additions (or spaces) so you know what’s been added or what is completely different.