#include <stdio.h>	/*(printf)*/#include <termios.h>	/*ICANON,TCSA...*/#include <signal.h>	/*SIGTERM*/#include <stdlib.h>	/*(atexit)*/#include <unistd.h>	/*(isatty)*/#include "stty.h"	/*(setTty)*//* stty -icannon -echo -isig -icrnl -inlcr */static voidsigint(int i){    exit(1);}static int pid;static struct termios oldTermios;static voidrecoverTermios(void){    if (getpid() != pid) return; /* SOCKS (at least v4.2) subprocess				    calls exit() (why not _exit()??) */    tcsetattr(0, TCSADRAIN, &oldTermios);    printf("\nBye.\n");}#ifdef USE_ON_EXIT#define atexit(f) on_exit((f),0)#endifvoidsetTty(void){    struct termios t;    if (!isatty(0)) return;    pid = getpid();    signal(SIGTERM, sigint);    signal(SIGINT, sigint);    tcgetattr(0, &t);    oldTermios = t;    atexit(recoverTermios);    t.c_lflag &= ~ICANON & ~ECHO & ~ISIG;    t.c_iflag &= ~ICRNL & ~INLCR;    t.c_oflag &= ~OCRNL & ~ONLCR;    t.c_cc[VMIN] = 1;    t.c_cc[VTIME] = 0;    tcsetattr(0, TCSADRAIN, &t);}