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#   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/>.
#
LC_ALL=C
LANG=C

set -o history
set -H

echo '!'
echo "!"
echo !

echo "$( echo '!' )"
echo "$( echo "!" )"
echo "$( echo ! )"

echo $( echo '!' )
echo $( echo "!" )
echo $( echo ! )

echo "$( echo "\!" )"
echo "\!"

echo "$( echo '\!' )"
echo '\!'