diff --git a/libs/ardour/ardour/location.h b/libs/ardour/ardour/location.h
index df31dde5a2..d7c7d79869 100644
--- a/libs/ardour/ardour/location.h
+++ b/libs/ardour/ardour/location.h
@@ -205,6 +205,8 @@ public:
 	bool clear_xrun_markers ();
 	bool clear_ranges ();
 
+	void ripple (samplepos_t at, samplecnt_t distance, bool include_locked, bool notify);
+
 	XMLNode& get_state (void);
 	int set_state (const XMLNode&, int version);
 	Location *get_location_by_id(PBD::ID);
diff --git a/libs/ardour/location.cc b/libs/ardour/location.cc
index 636f7d9154..7f9af25950 100644
--- a/libs/ardour/location.cc
+++ b/libs/ardour/location.cc
@@ -1612,3 +1612,38 @@ Locations::range_starts_at(samplepos_t pos, samplecnt_t slop, bool incl) const
 
 	return closest;
 }
+
+void
+Locations::ripple (samplepos_t at, samplecnt_t distance, bool include_locked, bool notify)
+{
+	Glib::Threads::RWLock::WriterLock lm (_lock);
+
+	for (LocationList::iterator i = locations.begin(); i != locations.end(); ) {
+
+		if (!include_locked && (*i)->locked()) {
+			continue;
+		}
+
+		bool locked = (*i)->locked();
+
+		if (locked) {
+			(*i)->unlock ();
+		}
+
+		if ((*i)->start() >= at) {
+			(*i)->set_start ((*i)->start() - distance);
+
+			if (!(*i)->is_mark()) {
+				(*i)->set_end ((*i)->end() - distance);
+			}
+		}
+
+		if (locked) {
+			(*i)->locked();
+		}
+	}
+
+	if (notify) {
+		changed(); /* EMIT SIGNAL */
+	}
+}