From efe504eefc3775d2967b44bed787b3a5e6bfc51d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mislav=20Marohni=C4=87?= <mislav@github.com>
Date: Tue, 27 Sep 2022 19:50:05 +0200
Subject: [PATCH] Fix color output for non-256 color terminals

The function enableVirtualTerminalProcessing must return an error if
virtual terminal processing (only applicable on Windows) was not
enabled, otherwise we assume that the terminal supports both 256-color
and truecolor.

We have been erroneously assuming that all non-Windows terminals are
256-color and sending escape sequences to those that cannot intepret
them. This led to some parts of Survey prompts being invisible on old
terminals.

Regressed in be4b392530fc5a8f6529b38a0d3a1d478fb12b0b
---
 pkg/iostreams/console.go | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pkg/iostreams/console.go b/pkg/iostreams/console.go
index 1eef4190b..73126787d 100644
--- a/pkg/iostreams/console.go
+++ b/pkg/iostreams/console.go
@@ -3,6 +3,8 @@
 
 package iostreams
 
+import "errors"
+
 func enableVirtualTerminalProcessing(fd uintptr) error {
-	return nil
+	return errors.New("not implemented")
 }