1# This program is free software: you can redistribute it and/or modify 2# it under the terms of the GNU General Public License as published by 3# the Free Software Foundation, either version 3 of the License, or 4# (at your option) any later version. 5# 6# This program is distributed in the hope that it will be useful, 7# but WITHOUT ANY WARRANTY; without even the implied warranty of 8# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 9# GNU General Public License for more details. 10# 11# You should have received a copy of the GNU General Public License 12# along with this program. If not, see <http://www.gnu.org/licenses/>. 13# 14fn () 15{ 16 declare -n var=foo; var=bar 17} 18 19unset foo 20fn 21echo ${foo:-unset} 22 23unset -f fn 24unset foo 25fn() 26{ 27 declare -n var; var=foo 28} 29 30fn 31echo ${foo:-unset} 32