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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/>.
#
# post-bash-4.3 changes for more ksh93 compatibility when following nameref
# chains and using typeset/declare -n to operate on nameref variables rather
# than the variables they reference
# don't follow nameref chain when using declare -n and at the global scope
unset -n r1 r2
typeset -n r1=r2
typeset -n r2=x
typeset -n r1=y
typeset -p r1 r2 x y
# same behavior when in a shell function
foo()
{
typeset -n r1=r2
typeset -n r2=x
typeset -n r1=y
typeset -p r1 r2 x y
}
unset -n r1 r2
foo
unset -f foo
# same behavior when namerefs aren't chained
unset -n r1 r2
typeset -n r1=z
typeset -n r2=x
typeset -n r1=y
typeset -p r1 r2 x y
# same behavior when referenced variables have values
unset -n r1 r2
x=one
y=two
typeset -n r1=r2
typeset -n r2=x
typeset -n r1=y
typeset -p r1 r2 x y
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