Thank you all, I was suspecting it was an optimization. Unfortunately I'd have preferred the behavior of LuaJIT or Lua5.1, but it's also because I'm in a deviant case (use of debug.setmetatable). Here is a simplified version of what I'm doing, just to give you the true motivation of my question:
local proxy = {}
local mt = {
__index = function(self, key)
return proxy[self][key]
end,
__newindex = function(self, key, value)
if not proxy[self] then
proxy[self] = {}
end
proxy[self][key] = value
end,
}
debug.setmetatable(function()end, mt)
local funcs = {}
for i=0,5 do
local f = function() end
f.att = i
table.insert(funcs, f)
end
print(funcs[1].att) -- I'd expect 0
print(funcs[2].att) -- I'd expec 1
I think I'll try to convert my functions to tables with metamethod __call instead.
