Make copy-and-update syntax consistent with records

[knocte]

Long records are aligned this way:

let rainbow =
    {
        Boss = "Jeffrey"
        Lackeys = [ "Zippy" ; "George" ; "Bungle" ]
    }

So copy-and-update syntax should be similar:

let rainbow2 =
    {
        rainbow with
            Boss = "Jeffrey"
            Lackeys = [ "Zippy" ; "George" ; "Bungle" ]
    }

[Smaug123]

Internally we have a strong convention of:

let rainbow2 =
    { rainbow with
        Boss = "Jeffrey"
        Lackeys = [ "Zippy" ; "George" ; "Bungle" ]
    }

[nojaf]

In regards to fsprojects/fantomas#1396, we are more wondering if anything changes if the original value is a multiline expression.

Is it

    { GeeTower.Backend.Configuration.GetTestingConfig(
        lndAddress.ToString()
      ) with
        BitcoinRpcUser = "btc"
    }

or

    {
        GeeTower.Backend.Configuration.GetTestingConfig(
            lndAddress.ToString()
        ) with
            BitcoinRpcUser = "btc"
    }

I had no intention to challenge the current guide.

[Smaug123]

Oh, I see. Both options look really horrible to me :P I'll ping this over to Toby for discussion.

[TobyShaw]

I have never seen the record expression in a record update expression be multi line. It's always assigned to an intermediate variable first.

I have no strong opinions on which is chosen to resolve this, since I wouldn't approve any code which contains either expression.

[nojaf]

To me, it would seem more consistent to have it like

    { GeeTower.Backend.Configuration.GetTestingConfig(
        lndAddress.ToString()
      ) with
        BitcoinRpcUser = "btc"
    }

but indeed, I'd also go for an intermediate variable first.