[Endzeit]

this cannot be working like this
for example playername: "Killer"
target returns "Killer"
UnitName("player") returns "Killer nil"

ChatFrame_AddMessageEventFilter("CHAT_MSG_LOOT",function(self,event,msg,_,_,_,target,  ...)
      local name, realm = UnitName("player")
      if target==name then
        local id=tonumber(msg:match("|Hitem:(%d+)")) or 0;--    Force nil to zero if we have an invalid link (no items exist at index zero)
        if ItemSetNames[id] then return false,msg.." (|cff9400d3Transmog Sets: "..string.join(", ",unpack(ItemSetNames[id])).."|r).",...; end 
      end
    end);

this works for UnitName("player"), cant check now if it works for other players