- void find_all_between (nframes64_t start, nframes64_t, LocationList&, Location::Flags);
+ void find_all_between (framepos_t start, framepos_t, LocationList&, Location::Flags);
+
+ enum Change {
+ ADDITION, ///< a location was added, but nothing else changed
+ REMOVAL, ///< a location was removed, but nothing else changed
+ OTHER ///< something more complicated happened
+ };