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#! /bin/sh
# Make sure stty can parse most of its options.
: ${STTY=stty}
if test "$VERBOSE" = yes; then
set -x
$RM --version
fi
saved_state=.saved-state
$STTY --save > $saved_state || exit 1
trap "status=$?; $STTY `cat $saved_state`; exit $status" 0 1 2 3 15
$STTY `cat $saved_state` || exit 1
# Build a list of all boolean options stty accepts on this system.
options=`stty -a|tail +2|tr ';' '\012'|sed '/ = /d;s/^ //'|tr -s ' -' '\012'`
# Take them one at a time, with and without the leading `-'.
for opt in $options; do
$STTY $opt || exit 1
case $opt in
# The following list of reversible options was generated with
# grep -w REV stty.c|grep '{"'|sed 's/....//;s/".*//'|fmt \
# |tr ' ' '|'|sed 's/$/) ;;/'
parenb|parodd|hupcl|hup|cstopb|cread|clocal|crtscts|ignbrk|brkint|ignpar) ;;
parmrk|inpck|istrip|inlcr|igncr|icrnl|ixon|ixoff|tandem|iuclc|ixany) ;;
imaxbel|opost|olcuc|ocrnl|onlcr|onocr|onlret|ofill|ofdel|isig|icanon) ;;
iexten|echo|echoe|crterase|echok|echonl|noflsh|xcase|tostop|echoprt) ;;
prterase|echoctl|ctlecho|echoke|crtkill|evenp|parity|oddp|nl|cooked|raw) ;;
pass8|litout|cbreak|decctlq|tabs|lcase|LCASE) ;;
*) # Skip options that aren't reversible.
continue;;
esac
$STTY -$opt || exit 1
done
# grep -w REV stty.c|grep '{"'|sed 's/....//;s/".*//'
exit 0
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