Weird formatting when assigning function to ref

[cknitt]

let f = ref(ignore)

// Ok
f.contents = () => {
  doA()
  doB()
}

// Weird
f :=
  (
    () => {
      doA()
      doB()
    }
  )

[cknitt]

And with an attribute, it gets weird in both cases:

let f = ref(ignore)

f.contents = @attr
() => {
  doA()
  doB()
}

f :=
  (
    @attr
    () => {
      doA()
      doB()
    }
  )