Returns the #GtkSourceUndoManager associated with the buffer, see gtk_source_buffer_set_undo_manager(). The returned object should not be unreferenced by the user.
the #GtkSourceUndoManager associated with the buffer, or %NULL.
See Implementation
Returns the #GtkSourceUndoManager associated with the buffer, see gtk_source_buffer_set_undo_manager(). The returned object should not be unreferenced by the user.