Multiple type checks in a try/with get collapsed

[Smaug123]

Issue created from fantomas-online

Code

thigns
|> Seq.map (fun a ->
    try
        Some i
    with
    | :? Foo
    | :? Bar as e when true ->
        None
)

Error

Fantomas was able to format the code but the result appears to be invalid F# code.
Please open an issue.

Formatted result:

thigns
|> Seq.map (fun a ->
    try
        Some i
    with :? Foo
    | :? Bar as e when true -> None
)

Problem description

The | character here is required but has been stripped away. Sorry about all the settings; I'm pretty sure they're not all required.

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 01/23/2021 17:11:48 - 6d75fff

    { config with
                MaxLineLength = 50
                SpaceBeforeUppercaseInvocation = true
                SpaceBeforeClassConstructor = true
                SpaceBeforeMember = true
                SpaceBeforeColon = true
                SpaceBeforeSemicolon = true
                IndentOnTryWith = true
                MultilineBlockBracketsOnSameColumn = true
                NewlineBetweenTypeDefinitionAndMembers = true
                AlignFunctionSignatureToIndentation = true
                AlternativeLongMemberDefinitions = true
                MultiLineLambdaClosingNewline = true
                DisableElmishSyntax = true }

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