Dotnet run does not preserve colors in child processes

@mattwarren in BenchmarkDotNet brought this to my attention

Steps to reproduce

dotnet new

make Program.cs

using System;

namespace ConsoleApplication
{
    public class Program
    {
        public static void Main(string[] args)
        {
            Console.ForegroundColor = ConsoleColor.Gray;
            Console.WriteLine("Hello World!");
        }
    }
}

dotnet restore dotnet run

Expected behavior

Outputs gray text

Actual behavior

Environment data

dotnet --version output:

C:\Users\brthor\code\repro\run-color>dotnet --version
.NET Command Line Tools (1.0.0-beta-001828)

Product Information:
 Version:     1.0.0-beta-001828
 Commit Sha:  N/A

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.10586
 OS Platform: Windows
 Runtime Id:  win10-x64

I’d expect this to be present anywhere because we don’t do anything special to handle Console.SetColor or Console.ForegroundColor calls in child processes.

cc @anurse any ideas on how we could handle this?

[stajs]

Has this fix been released? I’m still seeing uncolored output when using dotnet watch.

C:\>dotnet --info
.NET Command Line Tools (1.0.0-preview2-003131)

Product Information:
 Version:            1.0.0-preview2-003131
 Commit SHA-1 hash:  635cf40e58

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.10586
 OS Platform: Windows
 RID:         win10-x64

[shanselman]

This is a problem, it seems, with all things that wrap dotnet run, like dotnet test and dotnet watch.

I am seeing this even today with 1.0.0-preview2-003119. That’s pretty new. We need to fix this soon IMHO, it’s super annoying. @Eilon