EV_NOHOOK
env_setenv(ev->ev_name, flags | EV_NOHOOK, value, NULL, NULL);
if ((ev->ev_sethook != NULL) && !(flags & EV_NOHOOK))
env_setenv(ev->ev_name, flags | EV_NOHOOK, value, NULL, NULL);
env_setenv(ev->ev_name, flags | EV_NOHOOK, value, NULL, NULL);