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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/>.
#
oIFS=$IFS

set -- ''

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
recho ${v='' }
recho $v
unset v
recho ${v= '' }
recho $v
unset v
recho ${v=$* }
recho $v
unset v
recho ${v= $* }
recho $v

unset IFS

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
recho ${v='' }
recho $v
unset v
recho ${v= '' }
recho $v
unset v
recho ${v=$* }
recho $v
unset v
recho ${v= $* }
recho $v

unset -v v
IFS=$oIFS

# This shouldn't output anything
set -- '' ''

unset -v v
recho ${v=$*}
unset -v v
recho ${v= $*}
unset -v v
recho ${v=$* }
unset -v v
recho ${v= $* }

unset -v v IFS
recho ${v=$*}
unset -v v
recho ${v= $*}
unset -v v
recho ${v= $* }
unset -v v
recho ${v= $*}