 
     if (result == "")
     {
+        g_UseFallbackCommands := true
         g_CurrentCommand := g_FallbackCommands[1]
         g_CurrentCommandList := g_FallbackCommands
         Arg := g_CurrentInput

global g_Commands
; 当搜索无结果时使用的命令
global g_FallbackCommands
; 编辑框当前内容
global g_CurrentInput
; 当前匹配到的第一条命令

    result := ""
    commandPrefix := SubStr(command, 1, 1)

    if (commandPrefix == ";" || commandPrefix == ":")
    {
        if (commandPrefix == ";")
        {
