Newline was introduced in Sequential with LetBang

[nojaf]

Issue created from fantomas-online

Code

               async {
                 logger.Debug "some message"
                 let! token = Async.CancellationToken
                 let! model = sendRequest logger credentials token
                 return model.Prop }

               async {
                 logger.Debug "some message"
                 let token = Async.CancellationToken
                 let model = sendRequest logger credentials token
                 return model.Prop }

Result

async {
    logger.Debug "some message"

    let! token = Async.CancellationToken
    let! model = sendRequest logger credentials token
    return model.Prop
}

async {
    logger.Debug "some message"
    let token = Async.CancellationToken
    let model = sendRequest logger credentials token
    return model.Prop
}

Problem description

According to Fantomas own newline rules, there should not be a new line introduced here.
More specific the combination of SynExpr.Sequential with LetOrUseBang is causing this behaviour.

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 4.6 branch at 09/07/2021 15:59:52 - 7d861f4

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?}