【入门夯实】Lua大小写归一：沙巴克指令的lower统一比对

local CMDS = {sbk = 1, zuma = 1}
local function run(actor, cmd)
    if not CMDS[cmd] then           -- "SBK"查不到，大小写敏感
        sendmsg(actor, 1, "未知指令")
    end
end

local CMDS = {sbk = 1, zuma = 1}
local function run(actor, cmd)
    local key = string.lower(cmd or "")   -- 入口先归一
    if CMDS[key] then
        sendmsg(actor, 1, "沙巴克指令生效：" .. key)
    else
        sendmsg(actor, 1, "未知指令")
    end
end
run(actor, "SBK")