expect()
{
        echo expect "$@"
}

expect '<^J^J^J>'
recho $'\n\n\n'

z1=$''
expect '<>'
recho "$z1"

ZIFS=$'\n'$'\t'$' '

expect '<^J^I >'
recho "$ZIFS"

expect '<abc>'
recho $'abc'

expect '<^M^[^Gabc>'
recho $'\r\e\aabc'

D=$"hello"," "$"world"

expect '<hello,> <world>'
recho $D

expect '<hello, world>'
recho "$D"

D=$""
expect '<>'
recho "$D"

world=chet

expect '<$hello, world>'
recho \$"hello, world"

expect '<hello, $world>'
recho $"hello, \$world"

expect '<hello, "world">'
recho $"hello, \"world\""

expect '<hello, $"world">'
recho $"hello"', $"world"'

expect '<hello, $"world">'
recho $'hello, $"world"'

expect '<$hello, chet>'
recho \$"hello, $world"

expect '<hello, chet>'
recho $"hello, $world"