Wrong formatting in case expressions in presence of a long comment

[GioeleBucci]

I noticed a weird behaviour when commenting a case with multiple patterns and pointed it out to @giacomocavalieri to assure it wasn't intended behaviour.

Here's an example:

fn foo(a: Int, b: Int) -> Bool {
  case a, b {
    // a very long comment a very long comment a very long comment a very long comment
    1, 2 -> True
    _, _ -> False
  }
}

After the formatting, the code above becomes the following:

fn foo(a: Int, b: Int) -> Bool {
  case a, b {
    // a very long comment a very long comment a very long comment a very long comment
    1, 2
    -> True
    _, _ -> False
  }
}

Such behaviour happens only when the comment is quite long (i suppose > 80 characters?) and in case of a shorter one the formatter works as expected.

fn foo(a: Int, b: Int) -> Bool {
  case a, b {
    // a not quite long comment
    1, 2 -> True
    _, _ -> False
  }
}

Version info

OS: Windows 11
gleam 1.1.0
rebar 3.22.1 on Erlang/OTP 25 Erts 13.2.2.2

Logs

link to pastebin

[lpil]

Thank you