Add SCI_GETUNDOSEQUENCE to determine whether an undo sequence is active and its

nesting depth.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/Document.h b/src/Document.h
index efb1ae6d6..fa1c3fe42 100644
--- a/src/Document.h
+++ b/src/Document.h
@@ -397,6 +397,7 @@ public:
 	bool IsCollectingUndo() const noexcept { return cb.IsCollectingUndo(); }
 	void BeginUndoAction(bool coalesceWithPrior=false) noexcept { cb.BeginUndoAction(coalesceWithPrior); }
 	void EndUndoAction() noexcept { cb.EndUndoAction(); }
+	int UndoSequenceDepth() const noexcept;
 	void AddUndoAction(Sci::Position token, bool mayCoalesce) { cb.AddUndoAction(token, mayCoalesce); }
 	void SetSavePoint();
 	bool IsSavePoint() const noexcept { return cb.IsSavePoint(); }