#   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/>.
#
# quoted null problems in versions of bash prior to 3.2

str='12'
snul=$'\177'

recho "${str:2}"
recho "+${str:2}"
recho "+${snul:0:1}"
recho  "+""${str:2}"

recho "${str/?/$snul}"
recho ${str/?/$snul}

recho "${snul/x/y}"
recho ${snul/x/y}

recho "${snul/$snul/}"
recho "${str/$str/}"

recho "${snul##$snul}"
recho "${str##$str}"
recho "${str##$nul}"

A=""
B="${A:0}"

recho "$B"
recho "${A:0}"
recho "/tmp/test/TEST${A:0}"