doexit
doexit(0);
S_exit, doexit, 0, INF,
extern int doexit();
goto doexit; /* no mail, return error */
goto doexit;
goto doexit; /* no mail, return error */
goto doexit; /* there is mail, return success */
goto doexit;
goto doexit;
doexit:
goto doexit; /* no mail, return error */
doexit, L"m4exit",
int doexit;
if (sesthread.doexit) {
sesthread.doexit = 1;