#   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/>.
#
# if IFS side effects in ${IFS=} assignments take place, how do you cope with
# later changes to IFS in the same set of expansions?  You've already
# committed to using the first character of the (old) IFS to expand $* in
# the previous expansions, and changing it to not include ' ', for instance,
# results in the first couple of ${*} below not being split at all

set -f -- a b c

unset -v IFS
printf '<%s> ' ${*}${IFS=}${*}${IFS:=-}"${*}"
echo
printf "after 1: IFS "
echo "${IFS-unset}"
recho "$*"

set -f -- a 'b c' d
unset -v IFS
printf '<%s> ' ${*}${IFS=}${*}${IFS:=-}"${*}"
echo
printf "after 2: IFS "
echo "${IFS-unset}"
recho "$*"

unset -v IFS
recho $*
recho "$*"

IFS=' '
recho $*
recho "$*"