vim-argwrap/sample.txt

Foo(a, [b, z], c)

Foo(
    a,
    b
)

Foo(
    a,
    [b, c],
    d
)

Foo(
    a,
    [
        b,
        "c"
    ],
    d
)
)

Foo(
    a,
    [b, c],
    d
)

Foo(
    a,
    [
        b,
        c
    ],
    d
)