- * Reset the terminal mode bits to a sensible state. Very useful after
- * a child program dies in raw mode.
- */
-static void
-reset_mode(void)
-{
-#ifdef TERMIOS
- tcgetattr(STDERR_FILENO, &mode);
-#else
- stty(STDERR_FILENO,&mode);
-#endif
-
-#ifdef TERMIOS
-#if defined(VDISCARD) && defined(CDISCARD)
- mode.c_cc[VDISCARD] = CHK(mode.c_cc[VDISCARD], CDISCARD);
-#endif
- mode.c_cc[VEOF] = CHK(mode.c_cc[VEOF], CEOF);
- mode.c_cc[VERASE] = CHK(mode.c_cc[VERASE], CERASE);
-#if defined(VFLUSH) && defined(CFLUSH)
- mode.c_cc[VFLUSH] = CHK(mode.c_cc[VFLUSH], CFLUSH);
-#endif
- mode.c_cc[VINTR] = CHK(mode.c_cc[VINTR], CINTR);
- mode.c_cc[VKILL] = CHK(mode.c_cc[VKILL], CKILL);
-#if defined(VLNEXT) && defined(CLNEXT)
- mode.c_cc[VLNEXT] = CHK(mode.c_cc[VLNEXT], CLNEXT);
-#endif
- mode.c_cc[VQUIT] = CHK(mode.c_cc[VQUIT], CQUIT);
-#if defined(VREPRINT) && defined(CRPRNT)
- mode.c_cc[VREPRINT] = CHK(mode.c_cc[VREPRINT], CRPRNT);
-#endif
-#if defined(VSTART) && defined(CSTART)
- mode.c_cc[VSTART] = CHK(mode.c_cc[VSTART], CSTART);
-#endif
-#if defined(VSTOP) && defined(CSTOP)
- mode.c_cc[VSTOP] = CHK(mode.c_cc[VSTOP], CSTOP);
-#endif
-#if defined(VSUSP) && defined(CSUSP)
- mode.c_cc[VSUSP] = CHK(mode.c_cc[VSUSP], CSUSP);
-#endif
-#if defined(VWERASE) && defined(CWERASE)
- mode.c_cc[VWERASE] = CHK(mode.c_cc[VWERASE], CWERASE);
-#endif
-
- mode.c_iflag &= ~(IGNBRK | PARMRK | INPCK | ISTRIP | INLCR | IGNCR
-#ifdef IUCLC
- | IUCLC
-#endif
-#ifdef IXANY
- | IXANY
-#endif
- | IXOFF);
-
- mode.c_iflag |= (BRKINT | IGNPAR | ICRNL | IXON
-#ifdef IMAXBEL
- | IMAXBEL
-#endif
- );
-
- mode.c_oflag &= ~(0
-#ifdef OLCUC
- | OLCUC
-#endif
-#ifdef OCRNL
- | OCRNL
-#endif
-#ifdef ONOCR
- | ONOCR
-#endif
-#ifdef ONLRET
- | ONLRET
-#endif
-#ifdef OFILL
- | OFILL
-#endif
-#ifdef OFDEL
- | OFDEL
-#endif
-#ifdef NLDLY
- | NLDLY | CRDLY | TABDLY | BSDLY | VTDLY | FFDLY
-#endif
- );
-
- mode.c_oflag |= (OPOST
-#ifdef ONLCR
- | ONLCR
-#endif
- );
-
- mode.c_cflag &= ~(CSIZE | CSTOPB | PARENB | PARODD | CLOCAL);
- mode.c_cflag |= (CS8 | CREAD);
- mode.c_lflag &= ~(ECHONL | NOFLSH
-#ifdef TOSTOP
- | TOSTOP
-#endif
-#ifdef ECHOPTR
- | ECHOPRT
-#endif
-#ifdef XCASE
- | XCASE
-#endif
- );
-
- mode.c_lflag |= (ISIG | ICANON | ECHO | ECHOE | ECHOK
-#ifdef ECHOCTL
- | ECHOCTL
-#endif
-#ifdef ECHOKE
- | ECHOKE
-#endif
- );
-#endif
-
-#ifdef TERMIOS
- tcsetattr(STDERR_FILENO, TCSADRAIN, &mode);
-#else
- stty(STDERR_FILENO, &mode);
-#endif
-}
-
-/*
- * Returns a "good" value for the erase character. This is loosely based on
- * the BSD4.4 logic.
- */
-static int
-default_erase(void)
-{
- int result;
-
- if (over_strike
- && key_backspace != 0
- && strlen(key_backspace) == 1)
- result = key_backspace[0];
- else
- result = CERASE;
-
- return result;
-}
-
-/*
- * Update the values of the erase, interrupt, and kill characters in 'mode'.
- *
- * SVr4 tset (e.g., Solaris 2.5) only modifies the intr, quit or erase
- * characters if they're unset, or if we specify them as options. This differs
- * from BSD 4.4 tset, which always sets erase.