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#   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/>.
#

# assoc_expand_once and unset builtin, which is treated specially

declare -A assoc

var=x123
assoc['$var']=value
declare -p assoc 

shopt -u assoc_expand_once
unset "assoc[$var]"
declare -p assoc

unset 'assoc[$var]'
declare -p assoc

assoc['$var']=value
shopt -s assoc_expand_once
unset 'assoc[$var]'
declare -p assoc

unset assoc
shopt -u assoc_expand_once

declare -A a
a['$(echo foo)']=1

unset 'a[$(echo foo)]'
declare -p a

key='$(echo foo)'
a[$key]=1

unset 'a[$key]'
declare -p a

a[$key]=1
unset "a[$key]"
declare -p a

a[$key]=1
unset a[$key]
declare -p a

unset a

typeset -A assoc
key=@

assoc[@]=at
assoc[!]=bang

# this should only unset the element with key `@'
unset -v assoc[$key]
typeset -p assoc

# this should check for assoc[@] and return 1
test -v assoc[$key]
echo $?

# this should too
[[ -v assoc[$key] ]]
echo $?

unset assoc array

declare -A assoc
declare -a array

assoc=([@]=at [!]=bang)
declare -p assoc

unset assoc[@]
declare -p assoc

array=(1 2 3)
declare -p array

# right now, this still unsets the entire array
unset array[@]
declare -p array

BASH_COMPAT=51
unset array[@]
declare -p array

declare -A map; key='foo$(uname >/dev/tty)bar'; map[$key]=1
declare -p map
echo ${map["$key"]}

unset map["$key"]
declare -p map
unset map

declare -A blah
blah['$(DOESNOTEXIST)']=broken
for i in "${!blah[@]}"; do echo "$i"; done

for i in "${!blah[@]}"; do unset blah["$i"]; done
declare -p blah
unset blah