"Format document on save" incompatible with SA1000

[ruffin--]

StyleCop's SA1000 wants you to have a space between new and () when you're using Type Inference.

We have some devs using PPT and VS 2019 on a .NET Core project that has SA1000 active. We haven't found a setting to turn off the new () to new() change when "Format document on save" is selected.

Expected after format

public static void TestMe()
{
    List<string> a = new ()     // Format document takes this back out!
    {
        "spam",
        "ham",
        "Sam"
    };

    System.Diagnostics.Debug.WriteLine(a[0]);
}

Actual after format

public static void TestMe()
{
    List<string> a = new()     // <<<< StyleCop SA1000 complains here
    {
        "spam",
        "ham",
        "Sam"
    };

    System.Diagnostics.Debug.WriteLine(a[0]);
}

A+ with garlands

In a perfect world, if you have SA1000 enabled, "format document on save" would leave the space after new and before ().

---

(Yes, I'm suspicious this is a "We're just calling VS' format from Edit >>> Advanced >>> Format Document" issue.)

[olegtk]

Please file it on https://github.com/dotnet/roslyn/issues