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# $FreeBSD: releng/12.0/bin/sh/tests/expansion/question1.0 213738 2010-10-12 18:20:38Z obrien $
x=a\ b
[ "$x" = "${x?}" ] || exit 1
set -- ${x?}
{ [ "$#" = 2 ] && [ "$1" = a ] && [ "$2" = b ]; } || exit 1
unset x
(echo ${x?abcdefg}) 2>&1 | grep -q abcdefg || exit 1
${SH} -c 'unset foo; echo ${foo?}' 2>/dev/null && exit 1
${SH} -c 'foo=; echo ${foo:?}' 2>/dev/null && exit 1
${SH} -c 'foo=; echo ${foo?}' >/dev/null || exit 1
${SH} -c 'foo=1; echo ${foo:?}' >/dev/null || exit 1
${SH} -c 'echo ${!?}' 2>/dev/null && exit 1
${SH} -c ':& echo ${!?}' >/dev/null || exit 1
${SH} -c 'echo ${#?}' >/dev/null || exit 1
${SH} -c 'echo ${*?}' 2>/dev/null && exit 1
${SH} -c 'echo ${*?}' ${SH} x >/dev/null || exit 1
${SH} -c 'echo ${1?}' 2>/dev/null && exit 1
${SH} -c 'echo ${1?}' ${SH} x >/dev/null || exit 1
${SH} -c 'echo ${2?}' ${SH} x 2>/dev/null && exit 1
${SH} -c 'echo ${2?}' ${SH} x y >/dev/null || exit 1
exit 0
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