a=$'ab\001cd\001ef'
IFS=$'\001'

recho $a
recho ${a}
recho xx${a}yy
recho "$a"

recho $(echo $a)
recho $(echo "$a")

recho ${a%%??}
recho "${a%%??}"

recho ${a/f/}
recho "${a/f/}"

a1=("$a")
recho ${a1[0]}
recho ${a1}

recho ${a:2:2}

set -- $a
recho $1 -- $2 -- $3

set -- "$a"
recho $1
recho ${1}

echo "$a" | { IFS=$'\001' read x y z; recho $x -- $y -- $z ; }
unset x y z
b=$'uv\177wx\177yz'

recho $b

recho "ab${x}y${a}z"
recho ab${x}y${a}z

recho "ab${b}y${a}z"
recho ab${b}y${a}z

echo "ab${b}y${a}z" | { IFS=$'\001' read l m n o  ; recho $l -- $m -- $n -- $o; }
unset l m n o

a=$'ab\001cd\001ef'
b=$'uv\177wx\177yz'

IFS=$'\177'

recho $a
recho $b

recho "ab${x}y${b}z"
recho ab${x}y${b}z

recho "ab${b}y${a}z"
recho ab${b}y${a}z

echo "ab${b}y${a}z" | { IFS=$'\001' read l m n o  ; recho "$l" -- "$m" -- "$n" -- "$o"; }
unset l m n o
echo "ab${b}y${a}z" | { IFS=$'\177' read l m n o  ; recho "$l" -- "$m" -- "$n" -- "$o"; }
unset l m n o
