First two can be changed quite easily: http://metalua.luaforge.net/src/lib/strict.lua.html http://metalua.luaforge.net/src/lib/strict.lua.html The last one is

First two can be changed quite easily: http://metalua.luaforge.net/src/lib/strict.lua.html http://metalua.luaforge.net/src/lib/strict.lua.html The last one is awesome.