#   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/>.
#
IFS=$' \t\n'   # or any other IFS
set -- ''
recho ${v= "$*" }
recho "$v"
unset -v v

IFS=''
set -- '' ''
recho ${v= "$*" }
recho "$v"
unset -v v

IFS=$' \t\n'   # or any other IFS
unset -v v

set -- ''
recho ${v= "$@" }
recho "$v"
unset v
recho ${v= $@ }
recho "$v"
unset v
recho ${v= $@"" }
recho "$v"
unset v
recho ${v= ${@} }
recho "$v"
unset v
recho ${v= ${@}"" }
recho "$v"
unset v

set -- '' ''
recho ${v= $@ }
recho "$v"
unset v
recho ${v= "$@" }
recho "$v"
unset v
recho "${v= $@}"
recho "$v"
unset v
recho ${v= "$@"}
recho "$v"
unset v

IFS=

set -- X
X=X

recho ${0+ "$@" }
recho ${0+ $@ }
recho ${0+ $* }

recho ${0+ "$X" }
recho ${0+ $X }
recho ${0+ $X }

recho ${0+ "$@" }
recho "$Y"
unset Y
recho ${0+ $@ }
recho "$Y"
unset Y
recho ${0+ $* }
recho "$Y"
unset Y

recho ${Y:= "$X" }
recho "$Y"
unset Y
recho ${Y:= $X }
recho "$Y"
unset Y
recho ${Y:= $X }
recho "$Y"
unset Y

IFS=

unset -v X Y

set -- X Y
X='X Y'

recho ${0+ "$@" }
recho ${0+ $@ }
recho ${0+ $* }

recho ${0+ "$X" }
recho ${0+ $X }
recho ${0+ $X }

recho ${Y:= "$@" }
recho "$Y"
unset Y
recho ${Y:= $@ }
recho "$Y"
unset Y
recho ${Y:= $* }
recho "$Y"
unset Y

recho ${Y:= "$X" }
recho "$Y"
unset Y
recho ${Y:= $X }
recho "$Y"
unset Y
recho ${Y:= $X }
recho "$Y"
unset Y

IFS=''
set -- ' X '

unset x y

x=$*
y=${*:1}

recho "$x"
recho "$y"

unset x y

recho ${x=$*}
recho ${y=${*:1}}

set -- b a
declare -A A=([b]= [a]=)

x=$*
y=${!A[*]}

unset A

recho "$x"
recho "$y"

unset x y

recho ${x=$*}
recho ${y=${!A[*]}}

unset x y

recho ${x-$*}
recho ${y-${!A[*]}}	# this isn't right yet

IFS=:
set -- a b
ind=*

unset x y

x=$*
y=${!ind}

recho "$x"
recho "$y"

unset x y

recho ${x-$*}
recho ${y-${!ind}}	# this isn't right yet

unset x y

recho ${x=$*}
recho ${y=${!ind}}

set -- ' X '
IFS=$' \t\n'

x=$*
y=${!ind};

recho "$x"
recho "$y"

IFS=''
x=$*
y=${!ind}

recho "$x"
recho "$y"

IFS=:
set -- a b
ind=*

unset x y

recho ${x-$*}
recho ${y-${!ind}}	# this isn't right yet

unset x y

recho ${x=$*}
recho ${y=${!ind}}

set -- ' X '
IFS=$' \t\n'

unset x y

x=$*
y=${!ind};

recho "$x"
recho "$y"

IFS=''
x=$*
y=${!ind}

recho "$x"
recho "$y"

IFS=''
set -- $'\177'

unset -v var

recho "${*:1}"
var=${*:1}
recho "$var"

unset var
recho ${var=${*:1}}
recho "$var"

declare -a a=($'\177')

unset var
var=${a[*]:0}
recho "$var"

unset var
recho ${var=${a[*]:0}}
unset var

set -- $'\177'
ind='*'

recho $*
var=${!ind}
recho "$var"

unset var
recho ${var=${!ind}}
recho "$var"

declare -A A=([0]=$'\177')

unset var
var=${A[*]:0}
recho "$var"

# this isn't really right yet
unset var
recho ${var=${A[*]:0}}
recho "$var"