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# $FreeBSD: releng/12.1/bin/sh/tests/expansion/question2.0 341767 2018-12-09 19:14:21Z jilles $
unset dummyvar
msg=`(: ${dummyvar?}) 2>&1`
r=$?
[ "$r" != 0 ] && case $msg in
*dummyvar?* | *?dummyvar*) : ;;
*)
printf 'Bad message: [%s]\n' "$msg"
exit 1
esac
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