#   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/>.
#
#
# make sure indirect expansion for arrays uses the closest-scope instance
# of the resulting variable name

array_1=("PASS")
array_2=("1 foo" "2 foo")

unsafe_fn ()
{
    local array_1=('HELLO')
    local a=("${!1}") b=("${!2}")
    printf '%s;' "${a[@]}" "${b[@]}"
    printf '\n'
}

safe_fn ()
{
    local a=("${!1}") b=("${!2}")
    local array_1=('FAIL')
    printf '%s;' "${a[@]}" "${b[@]}"
    printf '\n'
}

unsafe_fn 'array_1[@]' 'array_2[@]'
safe_fn 'array_1[@]' 'array_2[@]'

echo after: ${array_1[@]}