| # 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' "${foo-$@}" |