gistfile1.lua

local names = {'wikipedia'}
plugins = {}

for _, plugin_name in ipairs(names) do
  local plugin_env   = setmetatable({}, { __index = getfenv(0), __metatable = {} })
  local plugin_chunk = loadfile(plugin_name .. '.lua')

  setfenv(plugin_chunk, plugin_env)
  pcall(plugin_chunk)

  plugins[plugin_env.command] = plugin_env
end