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# 14# make sure commands before the last one in the pipeline can't change $? 15false 16false | echo $? 17false 18(false) | echo $? 19 20false 21true | echo $? 22false 23(true) | echo $? 24 25true 26false | echo $? 27true 28(false) | echo $? 29 30true 31true | echo $? 32true 33(true) | echo $? 34