offline playerのサジェストに、本当のoffline playerを表示する

on tab complete for "/test":
    set tab completions for position 1 to offline players

command /test [<offline player>]:
    trigger:
        send arg

on tab complete for "/test":
    set tab completions for position 1 to offline players

command /test [<offline player>]:
    trigger:
        send arg