Implement detach point access with SCI_SETUNDODETACH and SCI_GETUNDODETACH.

Write more documentation for undo history.

1 files changed, 4 insertions, 2 deletions

diff --git a/src/CellBuffer.h b/src/CellBuffer.h
index 916937845..1c598480f 100644
--- a/src/CellBuffer.h
+++ b/src/CellBuffer.h
@@ -183,10 +183,12 @@ public:
 	int UndoActions() const noexcept;
 	void SetUndoSavePoint(int action) noexcept;
 	int UndoSavePoint() const noexcept;
-	void SetUndoCurrent(int action);
-	int UndoCurrent() const noexcept;
+	void SetUndoDetach(int action) noexcept;
+	int UndoDetach() const noexcept;
 	void SetUndoTentative(int action) noexcept;
 	int UndoTentative() const noexcept;
+	void SetUndoCurrent(int action);
+	int UndoCurrent() const noexcept;
 	int UndoActionType(int action) const noexcept;
 	Sci::Position UndoActionPosition(int action) const noexcept;
 	std::string_view UndoActionText(int action) const noexcept;