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# 14t() { 15 printf '%s | %s\n' "$1" "$2" 16 } 17 v="'" # v <- ' 18 19 #-- 20 t "${v/$'\''/$'\''}" "'" 21 t ${v/$'\''/$'\''} "'" 22 t "${v/$'\''/x}" "x" 23 t ${v/$'\''/x} "x" 24 t "${v/x/$'\''}" "'" 25 t ${v/x/$'\''} "'" 26 t "${v/x/$'\x5c\''}" "'" 27 t ${v/x/$'\x5c\''} "'" 28 t "${v/\'/\'}" "'" 29 t ${v/\'/\'} "'" 30 t ${v/\'/x} "x" 31 32echo "'" 33echo "$'\''" 34 35echo $'\'' 36 37echo $'\'abcd\'' 38echo "$'\'abcd\''" 39 40v=1 41echo ${v/1/\'} 42echo ${v/\'/2} 43