Idempotency problem when using object expression and having a space between get / set lines

[MangelMaxime]

Issue created from fantomas-online

Formatted code

{ new TaskDefinition with
    member this.Item
        with get (name: string): obj option = data.TryGet name


        and set (name: string) (v: obj option): unit =
            match v with
            | None -> data.Remove(name) |> ignore
            | Some v -> data.[name] <- v

    override this.``type``: string = "fakerun" }

Reformatted code

{ new TaskDefinition with
    member this.Item
        with get (name: string): obj option = data.TryGet name



        and set (name: string) (v: obj option): unit =
            match v with
            | None -> data.Remove(name) |> ignore
            | Some v -> data.[name] <- v

    override this.``type``: string = "fakerun" }

Problem description

Fantomas was not able to produce the same code after reformatting the result.

Note

If there is no spaces between these two lines:

        with get (name: string): obj option = data.TryGet name
        and set (name: string) (v: obj option): unit =

then the format is not generating a new line on each pass.

Extra information

• The formatted result breaks my code.
• The formatted result gives compiler warnings.
• I or my company would be willing to help fix this.

Options

Fantomas master branch at 2022-07-18T06:16:36Z - 452064c

Default Fantomas configuration

_{Did you know that you can ignore files when formatting from fantomas-tool or the FAKE targets by using a .fantomasignore file?}

[nojaf]

Thanks for the report Maxime, I'll release another beta once I can deal with the global issue.