This macro should be used when a failure of expr indicates a problem with a
Buffer or its related objects, e.g., a Cursor. In release mode, it throws a
BufferException, which will typically result in an emergency save of that
This macro should be used when a failure of expr indicates a problem with a
Buffer or its related objects, e.g., a Cursor. In release mode, it throws a
BufferException, which will typically result in an emergency save of that