With.NET 5 RC1: ``` dotnet fsi --langversion:preview nameof (+) val it: "op_Addition" ``` It is the same in a compiled project. As per the spec, this is incorrect: https://github.com/fsharp/fslang-design/blob/master/preview/FS-1003-nameof-operator.md#names-of-operators-reveal-the-name-of-the-symbol-in-source We supposedly test this here: https://github.com/dotnet/fsharp/blob/main/tests/fsharp/core/nameof/preview/test.fsx#L241 Why no worky?