PS_F_NOCOPY
if ((ps->ps_flags & PS_F_NOCOPY) == 0 && ps->ps_mutable != NULL)
if ((flags & PS_F_NOCOPY) == 0) {
} else if ((flags & PS_F_NOCOPY) == 0) {
return _prop_string_instantiate(PS_F_NOCOPY, str, strlen(str));