RE: lua_pcall

["Virgil Smith" <Virgil@...>]

> lua_getglobal( l, "some_func" );
> lua_pushstring( l, "a" );
> lua_pushstring( l, "b" );
> 
> my_pcall();
> 
> But if my_pcall does stack manipulation in 
> order to retrieve the err_func, my values 
> are gonna be out of whack from what the called
> function is expecting?

That's what lua_insert is for. :-)

So that's roughly


int my_pcall(L, nargs, nresults)
{
   int err_func = lua_gettop(L) - (nargs + 1);

   ...  get the error function on the top of the stack ...

   lua_insert(L, err_func);
   return lua_pcall(L, nargs, nresults, err_func);
}