[clang-format] Unexpected whitespace in csharp formatting result

[magic-akari]

Search Words

• clang-format
• chsarp
• c#

Version

clang-format --version
Homebrew clang-format version 17.0.6

Input

https://github.com/AvaloniaUI/Avalonia/blob/1c792b294f82b26396e4f91032a2b535ea9c0669/src/Avalonia.Controls/Button.cs#L512

namespace Avalonia.Controls
{
    public class Button : ContentControl, ICommandSource, IClickableControl
    {
        protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs change)
        {
            var (oldFlyout, newFlyout) = change.GetOldAndNewValue<FlyoutBase?>();
        }
    }
}

Output

namespace Avalonia.Controls {
    public class Button : ContentControl, ICommandSource, IClickableControl {
        protected override void OnPropertyChanged(AvaloniaPropertyChangedEventArgs change) {
            var (oldFlyout, newFlyout) = change.GetOldAndNewValue < FlyoutBase ? > ();
        }
    }
}

Note

Please pay attention to the whitespace surrounding FlyoutBase.

This issue occurs in version 17, and it does not exist in version 16.