let x = 123
let y = [1, 2, $x]

fn f(a, b) {
    echo ${a}
    cat "/some/path/$b.txt"
}

fn g(xs) {
    for item in $xs {
        echo "* $item"
    }
}

fn h() {
    let counter = 0
    for line in io:lines() {
        echo "$counter $line"
        counter = $counter + 1
    }
}

a \
    b \
    c

f $x "filename"
g $y | h >output.txt