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# $FreeBSD: releng/12.1/bin/sh/tests/expansion/plus-minus6.0 214512 2010-10-29 13:42:18Z jilles $
failures=0
unset LC_ALL
export LC_CTYPE=en_US.ISO8859-1
nl='
'
i=1
set -f
while [ "$i" -le 255 ]; do
# A different byte still in the range 1..255.
i2=$((i^2+(i==2)))
# Add a character to work around command substitution's removal of
# final newlines, then remove it again.
c=$(printf \\"$(printf %o@ "$i")")
c=${c%@}
c2=$(printf \\"$(printf %o@ "$i2")")
c2=${c2%@}
case $c in
[\'$nl'$}();&|\"`']) c=M
esac
case $c2 in
[\'$nl'$}();&|\"`']) c2=N
esac
IFS=$c
command eval "set -- \${\$+$c2$c$c2$c$c2}"
if [ "$#" -ne 3 ] || [ "$1" != "$c2" ] || [ "$2" != "$c2" ] ||
[ "$3" != "$c2" ]; then
echo "Bad results for separator $i (word $i2)" >&2
: $((failures += 1))
fi
i=$((i+1))
done
exit $((failures > 0))
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