Named arguments are not supported

[puk06]

Named arguments are not supported in UdonSharp

Description

When using named arguments in UdonSharp, the code compiles successfully but does not behave like standard C#.
It seems that default parameter values are applied instead of the explicitly provided named arguments.

Minimal Example

using UdonSharp;
using UnityEngine;

public class ScriptTesting : UdonSharpBehaviour
{
    void Start()
    {
        // Passing "value2: false" explicitly
        NamedArgumentsTest(1, value2: false);
    }

    private void NamedArgumentsTest(int dummy, bool value = true, bool value2 = true)
    {
        if (value)
            Debug.Log("Value is TRUE!");
        else
            Debug.Log("Value is FALSE!");

        if (value2)
            Debug.Log("Value2 is TRUE!");
        else
            Debug.Log("Value2 is FALSE!");
    }
}

Expected Output

Value is TRUE!
Value2 is FALSE!

Actual Output

Value is TRUE!
Value2 is TRUE!

Notes

• The function call compiles, but the named argument is ignored, and the default parameter value is used instead.

• This behavior is inconsistent with standard C# and can cause confusion.

Suggestion

If supporting named arguments is not possible due to UdonSharp's design, it would be clearer to emit a compile-time error instead of silently ignoring them.

This would prevent unexpected behavior for developers.

Environment

• SDK: VRChat SDK 3.8.2
• Unity: 2022.3.22f1