output-let=auto-in=left_align-indent=4.hs

{-- should be the same in every option --}

let_oneline_empty =
    let in 10

let_oneline_single =
    let a = 1 in a + 2

let_oneline_multi =
    let a = 1; b = 2 in a + b

{-- pure let expressions --}

let_empty =
    let
    in  10

let_single =
    let a = 1
    in  a + 2

let_single_sig =
    let a :: Int
        a = 1
    in  a + 2

let_single_comment =
    let
        -- a comment
        a = 1
    in
        a + 2

let_multi =
    let a = 1
        b = 2
    in  a + b

let_single_newline =
    let
        a = 1
    in
        a + 2

let_multi_newline =
    let
        a = 1
        b = 2
    in
        a + b

{-- do-block --}

test_do = do
    let

    let a = 1

    let b = 2
        c = 3

    let d = "hello"
     in print d

    let d = "hello"
        e = "world"
     in print (d ++ e)

    let f = 1 in print f

{-- list comprehension --}

test_list =
    [ x + a + b + c
    | x <- xs
    , let
    , let a = 1
    , let b = 2
          c = 2
    ]

test_list_do = do
    x <-
        [ x + a + b + c
        | x <- xs
        , let
        , let a = 1
        , let b = 2
              c = 3
        ]

    [ x + y + a + b + c
      | y <- ys
      , let
      , let a = 1
      , let b = 2
            c = 3
      ]