【入门夯实】Lua trim清洗：祖玛教主指令串里的隐形空格

local function handle(actor, input)
    local fn = ROUTES[input]        -- " 攻城 " 查不到任何键
    if fn then fn(actor) end
end

local function trim(s)
    return (string.gsub(s, "^%s*(.-)%s*$", "%1"))
end
local function handle(actor, input)
    local fn = ROUTES[trim(input)]
    if fn then
        fn(actor)
    else
        sendmsg(actor, 1, "祖玛教主：听不懂这句")
    end
end