#   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/>.
#
n() { echo $#; }

set --

n "$@"

# should be 1
n "$@"''
n ''"$@"
n ''"$@"''

set -- ''

n "$@"
# should be 1
n "$@"''
n ''"$@"
n ''"$@"''

set -- '' ''

n "$@"
# should be 2
n ''"$@"
# should be 2
n "$@"''
# should be 2
n ''"$@"''

x=x

set --

n ${x+"$@"}

# should be 1
n ${x+"$@"''}
n ${x+''"$@"}
n ${x+''"$@"''}

set -- ''

n ${x+"$@"}
# should be 1
n ${x+"$@"''}
n ${x+''"$@"}
n ${x+''"$@"''}

set -- '' ''

n ${x+"$@"}
# should be 2
n ${x+''"$@"}
# should be 2
n ${x+"$@"''}
# should be 2
n ${x+''"$@"''}


set --

n "$@" "$@"
n "$@""$@"

n ${x+"$@" "$@"}

set -- ''

n ${x+"$@" "$@"}
n "$@" "$@"

set -- '' ''

n ${x+"$@" "$@"}
n "$@" "$@"
n "$@""$@"

# new tests
unset -v x
v=$'\177'

recho ''$'\177'''
recho $'\177'''
recho ''$'\177'

recho ''$v''
recho ''$v
recho $v''