#   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/>.
#
: ${TMPDIR:=/tmp}

HISTFILE=${TMPDIR}/history-$$
HISTSIZE=4
HISTIGNORE="history*"

set -o history

history -c

echo 1
echo 2
echo 3
echo 4
echo 5
echo 6

history

history -d -1
history

echo 6
echo 7

history
history -d -1
history

echo 7
echo 8
history -d -2--1
history

echo 9
echo 10
history
history -d 5-7
history

unset HISTFILE
exit 0