script.lua

    local isdigest = redis.call('srem', "digest:users", ARGV[1])

    local keys = redis.call('keys', "digest:"..ARGV[1]..":*")

    local ret = {}

    for i,key in ipairs(keys) do
      local dict = {}
      local keyname = key:gsub("digest:"..ARGV[1]..':','')

      local members = redis.call('lrange', key,0 ,-1)

      table.insert(dict,keyname)
      table.insert(dict,members)
      table.insert(ret,dict)
      redis.call('del',key)
    end

    return ret