#   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/>.
#

# verify all shopt options are reset properly when the shell is reinitialized

: ${TMPDIR:=/var/tmp} ${THIS_SH:=$PWD/bash}

t1=$(mktemp)
t2=$(mktemp)

if [ ! -e "$t1" ] ; then
	S1=$RANDOM
	S2=$RANDOM
	t1=$TMPDIR/s-$S1
	t2=$TMPDIR/s-$S2
	touch "$t1" "$t2"
fi

chmod +x "$t1" "$t2"

echo "shopt" > "$t1"

echo "#!${THIS_SH}" > "$t2"
echo "shopt" >> "$t2"

for o in $(compgen -A shopt)
do
	case $o in
	extdebug)	;;
	*)		shopt -s $o ;;
	esac
done
diff <("$t1") <("$t2")

for o in $(compgen -A shopt)
do
	shopt -u $o;
done
diff <("$t1") <("$t2")

rm "$t1" "$t2"