5 files changed, 7 insertions, 7 deletions
diff --git a/src/CellBuffer.cxx b/src/CellBuffer.cxx
index 1ffc749bf..bf0ca6ba5 100644
--- a/src/CellBuffer.cxx
+++ b/src/CellBuffer.cxx
@@ -1062,8 +1062,8 @@ bool CellBuffer::IsCollectingUndo() const noexcept {
 	return collectingUndo;
 }
 
-void CellBuffer::BeginUndoAction() noexcept {
-	uh->BeginUndoAction();
+void CellBuffer::BeginUndoAction(bool mayCoalesce) noexcept {
+	uh->BeginUndoAction(mayCoalesce);
 }
 
 void CellBuffer::EndUndoAction() noexcept {
diff --git a/src/CellBuffer.h b/src/CellBuffer.h
index 1c598480f..3a72601a6 100644
--- a/src/CellBuffer.h
+++ b/src/CellBuffer.h
@@ -164,7 +164,7 @@ public:
 
 	bool SetUndoCollection(bool collectUndo) noexcept;
 	bool IsCollectingUndo() const noexcept;
-	void BeginUndoAction() noexcept;
+	void BeginUndoAction(bool mayCoalesce=false) noexcept;
 	void EndUndoAction() noexcept;
 	void AddUndoAction(Sci::Position token, bool mayCoalesce);
 	void DeleteUndoHistory() noexcept;
diff --git a/src/Document.h b/src/Document.h
index 912c719b5..102af4d2e 100644
--- a/src/Document.h
+++ b/src/Document.h
@@ -395,7 +395,7 @@ public:
 		return cb.SetUndoCollection(collectUndo);
 	}
 	bool IsCollectingUndo() const noexcept { return cb.IsCollectingUndo(); }
-	void BeginUndoAction() noexcept { cb.BeginUndoAction(); }
+	void BeginUndoAction(bool coalesceWithPrior=false) noexcept { cb.BeginUndoAction(coalesceWithPrior); }
 	void EndUndoAction() noexcept { cb.EndUndoAction(); }
 	void AddUndoAction(Sci::Position token, bool mayCoalesce) { cb.AddUndoAction(token, mayCoalesce); }
 	void SetSavePoint();
diff --git a/src/UndoHistory.cxx b/src/UndoHistory.cxx
index 0c8644f16..c94d0690c 100644
--- a/src/UndoHistory.cxx
+++ b/src/UndoHistory.cxx
@@ -322,10 +322,10 @@ const char *UndoHistory::AppendAction(ActionType at, Sci::Position position, con
 	return dataNew;
 }
 
-void UndoHistory::BeginUndoAction() noexcept {
+void UndoHistory::BeginUndoAction(bool mayCoalesce) noexcept {
 	if (undoSequenceDepth == 0) {
 		if (currentAction > 0) {
-			actions.types[PreviousAction()].mayCoalesce = false;
+			actions.types[PreviousAction()].mayCoalesce = mayCoalesce;
 		}
 	}
 	undoSequenceDepth++;
diff --git a/src/UndoHistory.h b/src/UndoHistory.h
index 8de636f8d..8d39a908d 100644
--- a/src/UndoHistory.h
+++ b/src/UndoHistory.h
@@ -97,7 +97,7 @@ public:
 
 	const char *AppendAction(ActionType at, Sci::Position position, const char *data, Sci::Position lengthData, bool &startSequence, bool mayCoalesce=true);
 
-	void BeginUndoAction() noexcept;
+	void BeginUndoAction(bool mayCoalesce=false) noexcept;
 	void EndUndoAction() noexcept;
 	void DropUndoSequence() noexcept;
 	void DeleteUndoHistory() noexcept;