Mono.Terminal.LineEditor.CmdReverseSearch C# (CSharp) Method

        void CmdReverseSearch()
        {
            if (searching == 0)
            {
                match_at = -1;
                last_search = search;
                searching = -1;
                search = "";
                SetSearchPrompt("");
            }
            else
            {
                if (search == "")
                {
                    if (last_search != "" && last_search != null)
                    {
                        search = last_search;
                        SetSearchPrompt(search);

                        ReverseSearch();
                    }
                    return;
                }
                ReverseSearch();
            }
        }