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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/>.
#
IFS='' # testing with only empty IFS
set -- this is a test
printf '|%s|\n' ${1+"$@"}
echo
printf '|%s|\n' "${1+$@}"
echo
printf '|%s|\n' "$@"
echo
printf '|%s|\n' ${1-"$@"}
printf '|%s|\n' "${1-$@}"
echo
: ${foo:="$@"}
printf '|%s|\n' "$foo"
unset foo
: "${foo:=$@}"
printf '|%s|\n' "$foo"
unset foo
printf '|%s|\n' ${foo-"$@"}
printf '|%s|\n' "${foo-$@}"
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