/nick by Isharo amélioration by Taeron_

command /nick <text>:
    usage: (/nick NOM) Votre nom sera modifé, et ne changera pas tant que vous ne faites pas &d/nick off &f, il ne doit pas dépasser &c16 caractères.
    permission: rank.set
    trigger:
        if arg 1 is not "off":
            if {usednick.%arg 1%} is not set:
                delete {usednick.%{MyNick.%player%}%}
                send "&aNom modifié en &b%arg 1%."
                set player tab name to "&7[Joueur] %arg 1%"
                set the player's display name to "&7[Joueur] %arg 1%"
                set {nick.%player%} to true
                set {MyNick.%player%} to "%arg 1%"
                set {usednick.%arg 1%} to true
            else:
                send "&cCe pseudo est déjà utilisé."
        else:
            send "&dNom remis à la normal."
            delete {usednick.%{MyNick.%player%}%}
            set {nick.%player%} to false
            delete {MyNick.%player%}
            If player has the permission "rank.guide":
                set player tab name to "&a[Guide] %player%"
            If player has the permission "rank.staff":
                set player tab name to "&3[Staff] %player%"
            If player has the permission "rank.modo":
                set player tab name to "&6[Modérateur] %player%"
            If player has the permission "rank.dev":
                set player tab name to "&9[Skripteur] %player%"
            If player has the permission "rank.admin":
                set player tab name to "&c[Administrateur] %player%"

on join:
    set {usednick.%name of player%} to true