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# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
x=a\ b
[ "$x" = "${x?}" ] || exit 1
set -- ${x?}
{ [ "$#" = 2 ] && [ "$1" = a ] && [ "$2" = b ]; } || exit 1
unset x
(echo ${x?abcdefg}) 2>&1 | grep abcdefg >/dev/null || exit 1
${THIS_SH} -c 'unset foo; echo ${foo?}' 2>/dev/null && exit 2
${THIS_SH} -c 'foo=; echo ${foo:?}' 2>/dev/null && exit 3
${THIS_SH} -c 'foo=; echo ${foo?}' >/dev/null || exit 4
${THIS_SH} -c 'foo=1; echo ${foo:?}' >/dev/null || exit 5
${THIS_SH} -c 'echo ${!?}' 2>/dev/null && exit 6
${THIS_SH} -c ':& echo ${!?}' >/dev/null || exit 7
${THIS_SH} -c 'echo ${#?}' >/dev/null || exit 8
${THIS_SH} -c 'echo ${*?}' 2>/dev/null && exit 9
${THIS_SH} -c 'echo ${*?}' ${THIS_SH} x >/dev/null || exit 10
${THIS_SH} -c 'echo ${1?}' 2>/dev/null && exit 11
${THIS_SH} -c 'echo ${1?}' ${THIS_SH} x >/dev/null || exit 12
${THIS_SH} -c 'echo ${2?}' ${THIS_SH} x 2>/dev/null && exit 13
${THIS_SH} -c 'echo ${2?}' ${THIS_SH} x y >/dev/null || exit 14
${THIS_SH} -c $'echo $(( x+ )) \n exit 0' ${THIS_SH} 2>/dev/null && exit 15
exit 0
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