+void
+Editor::fork_region ()
+{
+ RegionSelection rs;
+
+ get_regions_for_action (rs);
+
+ if (rs.empty()) {
+ return;
+ }
+
+ begin_reversible_command (_("Fork Region(s)"));
+
+ track_canvas->get_window()->set_cursor (*wait_cursor);
+ gdk_flush ();
+
+ for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ) {
+ RegionSelection::iterator tmp = r;
+ ++tmp;
+
+ MidiRegionView* const mrv = dynamic_cast<MidiRegionView*>(*r);
+
+ if (mrv) {
+ boost::shared_ptr<Playlist> playlist = mrv->region()->playlist();
+ boost::shared_ptr<MidiRegion> newregion = mrv->midi_region()->clone ();
+
+ playlist->clear_history ();
+ cerr << "Replace region with " << newregion->name() << endl;
+ playlist->replace_region (mrv->region(), newregion, mrv->region()->position());
+ _session->add_command(new StatefulDiffCommand (playlist));
+ }
+
+ r = tmp;
+ }
+
+ commit_reversible_command ();
+ rs.clear ();
+
+ track_canvas->get_window()->set_cursor (*current_canvas_cursor);
+}
+