19 return get_ptr()->ns_has_environment_variable(var);
28 return get_ptr()->ns_get_environment_variable(var);
36 get_ptr()->ns_set_environment_variable(var, value);
47 get_ptr()->ns_shadow_environment_variable(var, value);
56 get_ptr()->ns_clear_shadow(var);
65 return get_ptr()->ns_get_num_args();
75 return get_ptr()->ns_get_arg(n);
84 return get_ptr()->ns_get_binary_name();
93 return get_ptr()->ns_get_dtool_name();
101 get_ptr()->_binary_name = name;
109 get_ptr()->_dtool_name = name;