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hush
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stty: sort out preprocessor conditionals 

* Move the definitions of missing constants to the top of the file.
* Fix undefined IDX_xxx on missing termios constants.
* FreeBSD has TABDLY, TAB0 and TAB3, but no TAB1 or TAB2
* Omit the definition of set_window_size() if TIOCGWINSZ is not available.

Signed-off-by: Jeremie Koenig <jk@jk.fr.eu.org>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Jeremie Koenig 2010-07-30 06:01:37 +02:00 committed by Denys Vlasenko
parent 63c2e7ecc0
commit 138ce54c9c
2 changed files with 214 additions and 126 deletions
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1
coreutils/Config.src
View File

@ -607,7 +607,6 @@ config FEATURE_STAT_FORMAT
config STTY
bool "stty"
default y
depends on PLATFORM_LINUX
help
stty is used to change and print terminal line settings.

339
coreutils/stty.c
View File

@ -115,6 +115,113 @@
# define CSTATUS Control('t')
#endif
/* Save us from #ifdef forest plague */
#ifndef BSDLY
# define BSDLY 0
#endif
#ifndef CIBAUD
# define CIBAUD 0
#endif
#ifndef CRDLY
# define CRDLY 0
#endif
#ifndef CRTSCTS
# define CRTSCTS 0
#endif
#ifndef ECHOCTL
# define ECHOCTL 0
#endif
#ifndef ECHOKE
# define ECHOKE 0
#endif
#ifndef ECHOPRT
# define ECHOPRT 0
#endif
#ifndef FFDLY
# define FFDLY 0
#endif
#ifndef IEXTEN
# define IEXTEN 0
#endif
#ifndef IMAXBEL
# define IMAXBEL 0
#endif
#ifndef IUCLC
# define IUCLC 0
#endif
#ifndef IXANY
# define IXANY 0
#endif
#ifndef NLDLY
# define NLDLY 0
#endif
#ifndef OCRNL
# define OCRNL 0
#endif
#ifndef OFDEL
# define OFDEL 0
#endif
#ifndef OFILL
# define OFILL 0
#endif
#ifndef OLCUC
# define OLCUC 0
#endif
#ifndef ONLCR
# define ONLCR 0
#endif
#ifndef ONLRET
# define ONLRET 0
#endif
#ifndef ONOCR
# define ONOCR 0
#endif
#ifndef OXTABS
# define OXTABS 0
#endif
#ifndef TABDLY
# define TABDLY 0
#endif
#ifndef TAB1
# define TAB1 0
#endif
#ifndef TAB2
# define TAB2 0
#endif
#ifndef TOSTOP
# define TOSTOP 0
#endif
#ifndef VDSUSP
# define VDSUSP 0
#endif
#ifndef VEOL2
# define VEOL2 0
#endif
#ifndef VFLUSHO
# define VFLUSHO 0
#endif
#ifndef VLNEXT
# define VLNEXT 0
#endif
#ifndef VREPRINT
# define VREPRINT 0
#endif
#ifndef VSTATUS
# define VSTATUS 0
#endif
#ifndef VSWTCH
# define VSWTCH 0
#endif
#ifndef VTDLY
# define VTDLY 0
#endif
#ifndef VWERASE
# define VWERASE 0
#endif
#ifndef XCASE
# define XCASE 0
#endif
/* Which speeds to set */
enum speed_setting {
input_speed, output_speed, both_speeds
@ -167,13 +274,13 @@ enum {
IDX_cbreak,
IDX_crt,
IDX_dec,
#ifdef IXANY
#if IXANY
IDX_decctlq,
#endif
#if defined(TABDLY) || defined(OXTABS)
#if TABDLY || OXTABS
IDX_tabs,
#endif
#if defined(XCASE) && defined(IUCLC) && defined(OLCUC)
#if XCASE && IUCLC && OLCUC
IDX_lcase,
IDX_LCASE,
#endif
@ -196,13 +303,13 @@ static const char mode_name[] =
MI_ENTRY("cbreak", combination, REV | OMIT, 0, 0 )
MI_ENTRY("crt", combination, OMIT, 0, 0 )
MI_ENTRY("dec", combination, OMIT, 0, 0 )
#ifdef IXANY
#if IXANY
MI_ENTRY("decctlq", combination, REV | OMIT, 0, 0 )
#endif
#if defined(TABDLY) || defined(OXTABS)
#if TABDLY || OXTABS
MI_ENTRY("tabs", combination, REV | OMIT, 0, 0 )
#endif
#if defined(XCASE) && defined(IUCLC) && defined(OLCUC)
#if XCASE && IUCLC && OLCUC
MI_ENTRY("lcase", combination, REV | OMIT, 0, 0 )
MI_ENTRY("LCASE", combination, REV | OMIT, 0, 0 )
#endif
@ -217,7 +324,7 @@ static const char mode_name[] =
MI_ENTRY("cstopb", control, REV, CSTOPB, 0 )
MI_ENTRY("cread", control, SANE_SET | REV, CREAD, 0 )
MI_ENTRY("clocal", control, REV, CLOCAL, 0 )
#ifdef CRTSCTS
#if CRTSCTS
MI_ENTRY("crtscts", control, REV, CRTSCTS, 0 )
#endif
MI_ENTRY("ignbrk", input, SANE_UNSET | REV, IGNBRK, 0 )
@ -232,74 +339,78 @@ static const char mode_name[] =
MI_ENTRY("ixon", input, REV, IXON, 0 )
MI_ENTRY("ixoff", input, SANE_UNSET | REV, IXOFF, 0 )
MI_ENTRY("tandem", input, REV | OMIT, IXOFF, 0 )
#ifdef IUCLC
#if IUCLC
MI_ENTRY("iuclc", input, SANE_UNSET | REV, IUCLC, 0 )
#endif
#ifdef IXANY
#if IXANY
MI_ENTRY("ixany", input, SANE_UNSET | REV, IXANY, 0 )
#endif
#ifdef IMAXBEL
#if IMAXBEL
MI_ENTRY("imaxbel", input, SANE_SET | REV, IMAXBEL, 0 )
#endif
MI_ENTRY("opost", output, SANE_SET | REV, OPOST, 0 )
#ifdef OLCUC
#if OLCUC
MI_ENTRY("olcuc", output, SANE_UNSET | REV, OLCUC, 0 )
#endif
#ifdef OCRNL
#if OCRNL
MI_ENTRY("ocrnl", output, SANE_UNSET | REV, OCRNL, 0 )
#endif
#ifdef ONLCR
#if ONLCR
MI_ENTRY("onlcr", output, SANE_SET | REV, ONLCR, 0 )
#endif
#ifdef ONOCR
#if ONOCR
MI_ENTRY("onocr", output, SANE_UNSET | REV, ONOCR, 0 )
#endif
#ifdef ONLRET
#if ONLRET
MI_ENTRY("onlret", output, SANE_UNSET | REV, ONLRET, 0 )
#endif
#ifdef OFILL
#if OFILL
MI_ENTRY("ofill", output, SANE_UNSET | REV, OFILL, 0 )
#endif
#ifdef OFDEL
#if OFDEL
MI_ENTRY("ofdel", output, SANE_UNSET | REV, OFDEL, 0 )
#endif
#ifdef NLDLY
#if NLDLY
MI_ENTRY("nl1", output, SANE_UNSET, NL1, NLDLY)
MI_ENTRY("nl0", output, SANE_SET, NL0, NLDLY)
#endif
#ifdef CRDLY
#if CRDLY
MI_ENTRY("cr3", output, SANE_UNSET, CR3, CRDLY)
MI_ENTRY("cr2", output, SANE_UNSET, CR2, CRDLY)
MI_ENTRY("cr1", output, SANE_UNSET, CR1, CRDLY)
MI_ENTRY("cr0", output, SANE_SET, CR0, CRDLY)
#endif
#ifdef TABDLY
#if TABDLY
MI_ENTRY("tab3", output, SANE_UNSET, TAB3, TABDLY)
# if TAB2
MI_ENTRY("tab2", output, SANE_UNSET, TAB2, TABDLY)
# endif
# if TAB1
MI_ENTRY("tab1", output, SANE_UNSET, TAB1, TABDLY)
# endif
MI_ENTRY("tab0", output, SANE_SET, TAB0, TABDLY)
#else
# ifdef OXTABS
# if OXTABS
MI_ENTRY("tab3", output, SANE_UNSET, OXTABS, 0 )
# endif
#endif
#ifdef BSDLY
#if BSDLY
MI_ENTRY("bs1", output, SANE_UNSET, BS1, BSDLY)
MI_ENTRY("bs0", output, SANE_SET, BS0, BSDLY)
#endif
#ifdef VTDLY
#if VTDLY
MI_ENTRY("vt1", output, SANE_UNSET, VT1, VTDLY)
MI_ENTRY("vt0", output, SANE_SET, VT0, VTDLY)
#endif
#ifdef FFDLY
#if FFDLY
MI_ENTRY("ff1", output, SANE_UNSET, FF1, FFDLY)
MI_ENTRY("ff0", output, SANE_SET, FF0, FFDLY)
#endif
MI_ENTRY("isig", local, SANE_SET | REV, ISIG, 0 )
MI_ENTRY("icanon", local, SANE_SET | REV, ICANON, 0 )
#ifdef IEXTEN
#if IEXTEN
MI_ENTRY("iexten", local, SANE_SET | REV, IEXTEN, 0 )
#endif
MI_ENTRY("echo", local, SANE_SET | REV, ECHO, 0 )
@ -308,21 +419,21 @@ static const char mode_name[] =
MI_ENTRY("echok", local, SANE_SET | REV, ECHOK, 0 )
MI_ENTRY("echonl", local, SANE_UNSET | REV, ECHONL, 0 )
MI_ENTRY("noflsh", local, SANE_UNSET | REV, NOFLSH, 0 )
#ifdef XCASE
#if XCASE
MI_ENTRY("xcase", local, SANE_UNSET | REV, XCASE, 0 )
#endif
#ifdef TOSTOP
#if TOSTOP
MI_ENTRY("tostop", local, SANE_UNSET | REV, TOSTOP, 0 )
#endif
#ifdef ECHOPRT
#if ECHOPRT
MI_ENTRY("echoprt", local, SANE_UNSET | REV, ECHOPRT, 0 )
MI_ENTRY("prterase", local, REV | OMIT, ECHOPRT, 0 )
#endif
#ifdef ECHOCTL
#if ECHOCTL
MI_ENTRY("echoctl", local, SANE_SET | REV, ECHOCTL, 0 )
MI_ENTRY("ctlecho", local, REV | OMIT, ECHOCTL, 0 )
#endif
#ifdef ECHOKE
#if ECHOKE
MI_ENTRY("echoke", local, SANE_SET | REV, ECHOKE, 0 )
MI_ENTRY("crtkill", local, REV | OMIT, ECHOKE, 0 )
#endif
@ -346,13 +457,13 @@ static const struct mode_info mode_info[] = {
MI_ENTRY("cbreak", combination, REV | OMIT, 0, 0 )
MI_ENTRY("crt", combination, OMIT, 0, 0 )
MI_ENTRY("dec", combination, OMIT, 0, 0 )
#ifdef IXANY
#if IXANY
MI_ENTRY("decctlq", combination, REV | OMIT, 0, 0 )
#endif
#if defined(TABDLY) || defined(OXTABS)
#if TABDLY || OXTABS
MI_ENTRY("tabs", combination, REV | OMIT, 0, 0 )
#endif
#if defined(XCASE) && defined(IUCLC) && defined(OLCUC)
#if XCASE && IUCLC && OLCUC
MI_ENTRY("lcase", combination, REV | OMIT, 0, 0 )
MI_ENTRY("LCASE", combination, REV | OMIT, 0, 0 )
#endif
@ -367,7 +478,7 @@ static const struct mode_info mode_info[] = {
MI_ENTRY("cstopb", control, REV, CSTOPB, 0 )
MI_ENTRY("cread", control, SANE_SET | REV, CREAD, 0 )
MI_ENTRY("clocal", control, REV, CLOCAL, 0 )
#ifdef CRTSCTS
#if CRTSCTS
MI_ENTRY("crtscts", control, REV, CRTSCTS, 0 )
#endif
MI_ENTRY("ignbrk", input, SANE_UNSET | REV, IGNBRK, 0 )
@ -382,74 +493,78 @@ static const struct mode_info mode_info[] = {
MI_ENTRY("ixon", input, REV, IXON, 0 )
MI_ENTRY("ixoff", input, SANE_UNSET | REV, IXOFF, 0 )
MI_ENTRY("tandem", input, REV | OMIT, IXOFF, 0 )
#ifdef IUCLC
#if IUCLC
MI_ENTRY("iuclc", input, SANE_UNSET | REV, IUCLC, 0 )
#endif
#ifdef IXANY
#if IXANY
MI_ENTRY("ixany", input, SANE_UNSET | REV, IXANY, 0 )
#endif
#ifdef IMAXBEL
#if IMAXBEL
MI_ENTRY("imaxbel", input, SANE_SET | REV, IMAXBEL, 0 )
#endif
MI_ENTRY("opost", output, SANE_SET | REV, OPOST, 0 )
#ifdef OLCUC
#if OLCUC
MI_ENTRY("olcuc", output, SANE_UNSET | REV, OLCUC, 0 )
#endif
#ifdef OCRNL
#if OCRNL
MI_ENTRY("ocrnl", output, SANE_UNSET | REV, OCRNL, 0 )
#endif
#ifdef ONLCR
#if ONLCR
MI_ENTRY("onlcr", output, SANE_SET | REV, ONLCR, 0 )
#endif
#ifdef ONOCR
#if ONOCR
MI_ENTRY("onocr", output, SANE_UNSET | REV, ONOCR, 0 )
#endif
#ifdef ONLRET
#if ONLRET
MI_ENTRY("onlret", output, SANE_UNSET | REV, ONLRET, 0 )
#endif
#ifdef OFILL
#if OFILL
MI_ENTRY("ofill", output, SANE_UNSET | REV, OFILL, 0 )
#endif
#ifdef OFDEL
#if OFDEL
MI_ENTRY("ofdel", output, SANE_UNSET | REV, OFDEL, 0 )
#endif
#ifdef NLDLY
#if NLDLY
MI_ENTRY("nl1", output, SANE_UNSET, NL1, NLDLY)
MI_ENTRY("nl0", output, SANE_SET, NL0, NLDLY)
#endif
#ifdef CRDLY
#if CRDLY
MI_ENTRY("cr3", output, SANE_UNSET, CR3, CRDLY)
MI_ENTRY("cr2", output, SANE_UNSET, CR2, CRDLY)
MI_ENTRY("cr1", output, SANE_UNSET, CR1, CRDLY)
MI_ENTRY("cr0", output, SANE_SET, CR0, CRDLY)
#endif
#ifdef TABDLY
#if TABDLY
MI_ENTRY("tab3", output, SANE_UNSET, TAB3, TABDLY)
# if TAB2
MI_ENTRY("tab2", output, SANE_UNSET, TAB2, TABDLY)
# endif
# if TAB1
MI_ENTRY("tab1", output, SANE_UNSET, TAB1, TABDLY)
# endif
MI_ENTRY("tab0", output, SANE_SET, TAB0, TABDLY)
#else
# ifdef OXTABS
# if OXTABS
MI_ENTRY("tab3", output, SANE_UNSET, OXTABS, 0 )
# endif
#endif
#ifdef BSDLY
#if BSDLY
MI_ENTRY("bs1", output, SANE_UNSET, BS1, BSDLY)
MI_ENTRY("bs0", output, SANE_SET, BS0, BSDLY)
#endif
#ifdef VTDLY
#if VTDLY
MI_ENTRY("vt1", output, SANE_UNSET, VT1, VTDLY)
MI_ENTRY("vt0", output, SANE_SET, VT0, VTDLY)
#endif
#ifdef FFDLY
#if FFDLY
MI_ENTRY("ff1", output, SANE_UNSET, FF1, FFDLY)
MI_ENTRY("ff0", output, SANE_SET, FF0, FFDLY)
#endif
MI_ENTRY("isig", local, SANE_SET | REV, ISIG, 0 )
MI_ENTRY("icanon", local, SANE_SET | REV, ICANON, 0 )
#ifdef IEXTEN
#if IEXTEN
MI_ENTRY("iexten", local, SANE_SET | REV, IEXTEN, 0 )
#endif
MI_ENTRY("echo", local, SANE_SET | REV, ECHO, 0 )
@ -458,21 +573,21 @@ static const struct mode_info mode_info[] = {
MI_ENTRY("echok", local, SANE_SET | REV, ECHOK, 0 )
MI_ENTRY("echonl", local, SANE_UNSET | REV, ECHONL, 0 )
MI_ENTRY("noflsh", local, SANE_UNSET | REV, NOFLSH, 0 )
#ifdef XCASE
#if XCASE
MI_ENTRY("xcase", local, SANE_UNSET | REV, XCASE, 0 )
#endif
#ifdef TOSTOP
#if TOSTOP
MI_ENTRY("tostop", local, SANE_UNSET | REV, TOSTOP, 0 )
#endif
#ifdef ECHOPRT
#if ECHOPRT
MI_ENTRY("echoprt", local, SANE_UNSET | REV, ECHOPRT, 0 )
MI_ENTRY("prterase", local, REV | OMIT, ECHOPRT, 0 )
#endif
#ifdef ECHOCTL
#if ECHOCTL
MI_ENTRY("echoctl", local, SANE_SET | REV, ECHOCTL, 0 )
MI_ENTRY("ctlecho", local, REV | OMIT, ECHOCTL, 0 )
#endif
#ifdef ECHOKE
#if ECHOKE
MI_ENTRY("echoke", local, SANE_SET | REV, ECHOKE, 0 )
MI_ENTRY("crtkill", local, REV | OMIT, ECHOKE, 0 )
#endif
@ -497,31 +612,31 @@ enum {
CIDX_kill,
CIDX_eof,
CIDX_eol,
#ifdef VEOL2
#if VEOL2
CIDX_eol2,
#endif
#ifdef VSWTCH
#if VSWTCH
CIDX_swtch,
#endif
CIDX_start,
CIDX_stop,
CIDX_susp,
#ifdef VDSUSP
#if VDSUSP
CIDX_dsusp,
#endif
#ifdef VREPRINT
#if VREPRINT
CIDX_rprnt,
#endif
#ifdef VWERASE
#if VWERASE
CIDX_werase,
#endif
#ifdef VLNEXT
#if VLNEXT
CIDX_lnext,
#endif
#ifdef VFLUSHO
#if VFLUSHO
CIDX_flush,
#endif
#ifdef VSTATUS
#if VSTATUS
CIDX_status,
#endif
CIDX_min,
@ -538,31 +653,31 @@ static const char control_name[] =
CI_ENTRY("kill", CKILL, VKILL )
CI_ENTRY("eof", CEOF, VEOF )
CI_ENTRY("eol", CEOL, VEOL )
#ifdef VEOL2
#if VEOL2
CI_ENTRY("eol2", CEOL2, VEOL2 )
#endif
#ifdef VSWTCH
#if VSWTCH
CI_ENTRY("swtch", CSWTCH, VSWTCH )
#endif
CI_ENTRY("start", CSTART, VSTART )
CI_ENTRY("stop", CSTOP, VSTOP )
CI_ENTRY("susp", CSUSP, VSUSP )
#ifdef VDSUSP
#if VDSUSP
CI_ENTRY("dsusp", CDSUSP, VDSUSP )
#endif
#ifdef VREPRINT
#if VREPRINT
CI_ENTRY("rprnt", CRPRNT, VREPRINT)
#endif
#ifdef VWERASE
#if VWERASE
CI_ENTRY("werase", CWERASE, VWERASE )
#endif
#ifdef VLNEXT
#if VLNEXT
CI_ENTRY("lnext", CLNEXT, VLNEXT )
#endif
#ifdef VFLUSHO
#if VFLUSHO
CI_ENTRY("flush", CFLUSHO, VFLUSHO )
#endif
#ifdef VSTATUS
#if VSTATUS
CI_ENTRY("status", CSTATUS, VSTATUS )
#endif
/* These must be last because of the display routines */
@ -581,31 +696,31 @@ static const struct control_info control_info[] = {
CI_ENTRY("kill", CKILL, VKILL )
CI_ENTRY("eof", CEOF, VEOF )
CI_ENTRY("eol", CEOL, VEOL )
#ifdef VEOL2
#if VEOL2
CI_ENTRY("eol2", CEOL2, VEOL2 )
#endif
#ifdef VSWTCH
#if VSWTCH
CI_ENTRY("swtch", CSWTCH, VSWTCH )
#endif
CI_ENTRY("start", CSTART, VSTART )
CI_ENTRY("stop", CSTOP, VSTOP )
CI_ENTRY("susp", CSUSP, VSUSP )
#ifdef VDSUSP
#if VDSUSP
CI_ENTRY("dsusp", CDSUSP, VDSUSP )
#endif
#ifdef VREPRINT
#if VREPRINT
CI_ENTRY("rprnt", CRPRNT, VREPRINT)
#endif
#ifdef VWERASE
#if VWERASE
CI_ENTRY("werase", CWERASE, VWERASE )
#endif
#ifdef VLNEXT
#if VLNEXT
CI_ENTRY("lnext", CLNEXT, VLNEXT )
#endif
#ifdef VFLUSHO
#if VFLUSHO
CI_ENTRY("flush", CFLUSHO, VFLUSHO )
#endif
#ifdef VSTATUS
#if VSTATUS
CI_ENTRY("status", CSTATUS, VSTATUS )
#endif
/* These must be last because of the display routines */
@ -740,6 +855,7 @@ static void newline(void)
wrapf("\n");
}
#ifdef TIOCGWINSZ
static void set_window_size(int rows, int cols)
{
struct winsize win = { 0, 0, 0, 0 };
@ -760,6 +876,7 @@ static void set_window_size(int rows, int cols)
bail:
perror_on_device("%s");
}
#endif
static void display_window_size(int fancy)
{
@ -973,41 +1090,6 @@ static void sane_mode(struct termios *mode)
}
}
/* Save set_mode from #ifdef forest plague */
#ifndef ONLCR
#define ONLCR 0
#endif
#ifndef OCRNL
#define OCRNL 0
#endif
#ifndef ONLRET
#define ONLRET 0
#endif
#ifndef XCASE
#define XCASE 0
#endif
#ifndef IXANY
#define IXANY 0
#endif
#ifndef TABDLY
#define TABDLY 0
#endif
#ifndef OXTABS
#define OXTABS 0
#endif
#ifndef IUCLC
#define IUCLC 0
#endif
#ifndef OLCUC
#define OLCUC 0
#endif
#ifndef ECHOCTL
#define ECHOCTL 0
#endif
#ifndef ECHOKE
#define ECHOKE 0
#endif
static void set_mode(const struct mode_info *info, int reversed,
struct termios *mode)
{
@ -1093,27 +1175,32 @@ static void set_mode(const struct mode_info *info, int reversed,
mode->c_cc[VTIME] = 0;
}
}
else if (IXANY && info == &mode_info[IDX_decctlq]) {
#if IXANY
else if (info == &mode_info[IDX_decctlq]) {
if (reversed)
mode->c_iflag |= IXANY;
else
mode->c_iflag &= ~IXANY;
}
else if (TABDLY && info == &mode_info[IDX_tabs]) {
#endif
#if TABDLY
else if (info == &mode_info[IDX_tabs]) {
if (reversed)
mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB3;
else
mode->c_oflag = (mode->c_oflag & ~TABDLY) | TAB0;
}
else if (OXTABS && info == &mode_info[IDX_tabs]) {
#endif
#if OXTABS
else if (info == &mode_info[IDX_tabs]) {
if (reversed)
mode->c_oflag |= OXTABS;
else
mode->c_oflag &= ~OXTABS;
} else
if (XCASE && IUCLC && OLCUC
&& (info == &mode_info[IDX_lcase] || info == &mode_info[IDX_LCASE])
) {
}
#endif
#if XCASE && IUCLC && OLCUC
else if (info==&mode_info[IDX_lcase] || info==&mode_info[IDX_LCASE]) {
if (reversed) {
mode->c_lflag &= ~XCASE;
mode->c_iflag &= ~IUCLC;
@ -1123,7 +1210,9 @@ static void set_mode(const struct mode_info *info, int reversed,
mode->c_iflag |= IUCLC;
mode->c_oflag |= OLCUC;
}
} else if (info == &mode_info[IDX_crt]) {
}
#endif
else if (info == &mode_info[IDX_crt]) {
mode->c_lflag |= ECHOE | ECHOCTL | ECHOKE;
} else if (info == &mode_info[IDX_dec]) {
mode->c_cc[VINTR] = 3; /* ^C */
@ -1419,7 +1508,7 @@ int stty_main(int argc UNUSED_PARAM, char **argv)
perror_on_device_and_die("%s");
if (memcmp(&mode, &new_mode, sizeof(mode)) != 0) {
#ifdef CIBAUD
#if CIBAUD
/* SunOS 4.1.3 (at least) has the problem that after this sequence,
tcgetattr (&m1); tcsetattr (&m1); tcgetattr (&m2);
sometimes (m1 != m2). The only difference is in the four bits