#   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/>.
#

oifs=$IFS

inner () {
#recho inner: "$IFS" >&2
	echo a/b/c/d
	exit 0
}

outer() {
#recho outer: "$IFS" >&2
for i in 1; do
	IFS=/ read m v k a < <(IFS=$oifs inner)

echo $m:$v:$k:$a
done
}

outer
unset m k v a b c d

for j in 1; do
	IFS=: read a b c d
done < <(outer)

echo $a-$b-$c-$d
unset m k v a b c d

IFS=: read a b c d < <(outer)

echo $a:$b:$c:$d