How to test if a userdata has an environment table

[Gaspard Bucher <gaspard@...>]

Hi there,

I am reading the docs over and over and I do not see how I am supposed to see if the userdata has it's own environment table...

I see that "userdata and C functions are created sharing the environment of the creating C function" and that "the environment of the running C function is always at pseudo-index LUA_ENVIRONINDEX".

So my guess is to do this:

// ... <userdata>

lua_getfenv(L, -1);

// ... <userdata> <env>

if (lua_rawequal(L, -1, LUA_ENVIRONINDEX) {

  // does not have it's own env table

}

Is this ok ?

Gaspard