:
# Set up some dummy variables beginning with _Q
_QUANTITY=
_QUOTA=
_QUOTE=
_QUILL=
_QUEST=
_QUART=

recho ${!_Q*}
recho ${!_Q@}		# compatibility

IFS="-$IFS"

recho ${!_Q*}
recho "${!_Q*}"

recho ${!_Q@}
recho "${!_Q@}"

recho ${!_Y*}

recho "${!_Q* }"

IFS=$' \t\n'

set a b c d e f g h i j k l m n o p
recho ${!1*}

recho ${!@*}