Implement detach point access with SCI_SETUNDODETACH and SCI_GETUNDODETACH.

Write more documentation for undo history.

1 files changed, 12 insertions, 4 deletions

diff --git a/src/Document.cxx b/src/Document.cxx
index 8ab837daa..5f77ec2de 100644
--- a/src/Document.cxx
+++ b/src/Document.cxx
@@ -363,12 +363,12 @@ int Document::UndoSavePoint() const noexcept {
 	return cb.UndoSavePoint();
 }
 
-void Document::SetUndoCurrent(int action) {
-	cb.SetUndoCurrent(action);
+void Document::SetUndoDetach(int action) noexcept {
+	cb.SetUndoDetach(action);
 }
 
-int Document::UndoCurrent() const noexcept {
-	return cb.UndoCurrent();
+int Document::UndoDetach() const noexcept {
+	return cb.UndoDetach();
 }
 
 void Document::SetUndoTentative(int action) noexcept {
@@ -379,6 +379,14 @@ int Document::UndoTentative() const noexcept {
 	return cb.UndoTentative();
 }
 
+void Document::SetUndoCurrent(int action) {
+	cb.SetUndoCurrent(action);
+}
+
+int Document::UndoCurrent() const noexcept {
+	return cb.UndoCurrent();
+}
+
 int Document::UndoActionType(int action) const noexcept {
 	return cb.UndoActionType(action);
 }