Newline after let bang is missing

[nojaf]

Issue created from fantomas-online

Code

  /// a codefix that generates union cases for an incomplete match expression
  let generateUnionCases =
    ifDiagnosticByMessage
      (fun diagnostic codeActionParams ->
        asyncResult {
          let! (tyRes, line, lines) = getParseResultsForFile fileName pos

          match! generateCases tyRes pos lines line |> Async.map Ok with
          | CoreResponse.Res (insertString: string, insertPosition) ->
              return
                [ { SourceDiagnostic = Some diagnostic
                    File = codeActionParams.TextDocument
                    Title = "Generate union pattern match cases"
                    Edits = [| { Range = range; NewText = replaced } |]
                    Kind = Fix } ]

          | _ -> return []
        }
        |> AsyncResult.foldResult id (fun _ -> []))
      "Incomplete pattern matches on this expression. For example"

Result

/// a codefix that generates union cases for an incomplete match expression
let generateUnionCases =
    ifDiagnosticByMessage
        (fun diagnostic codeActionParams ->
            asyncResult {
                let! (tyRes, line, lines) = getParseResultsForFile fileName pos
                match! generateCases tyRes pos lines line |> Async.map Ok with
                | CoreResponse.Res (insertString: string, insertPosition) ->
                    return
                        [ { SourceDiagnostic = Some diagnostic
                            File = codeActionParams.TextDocument
                            Title = "Generate union pattern match cases"
                            Edits = [| { Range = range; NewText = replaced } |]
                            Kind = Fix } ]

                | _ -> return []
            }
            |> AsyncResult.foldResult id (fun _ -> []))
        "Incomplete pattern matches on this expression. For example"

Problem description

The newline under let bang is missing.

Extra information

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

Options

Fantomas Master at 12/22/2020 15:26:56 - aac3975

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?}