Function disable_global_variables

lua/sp.c:1312–1323

}

static int disable_global_variables(lua_State *lua)
{
    lua_createtable(lua, 0, 2);
    lua_pushliteral(lua, "__newindex");
    lua_pushcfunction(lua, l_global_undef);
    lua_rawset(lua, -3);
    lua_pushliteral(lua, "__index");
    lua_pushcfunction(lua, l_global_undef);
    lua_rawset(lua, -3);
    lua_setmetatable(lua, LUA_GLOBALSINDEX);
    return 0;
}

/*
** This returns dbrow or nil on end of result set. There is no way to signal