https://git.ruby-lang.org/ruby.git/commit/?id=99a79dc40b

From 99a79dc40bf20e0e5d588db4f93b69617affa7f3 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@r...>
Date: Tue, 1 Nov 2022 10:56:28 +0900
Subject: colorize.rb: support for NO_COLOR

---
 tool/lib/colorize.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tool/lib/colorize.rb b/tool/lib/colorize.rb
index 11b878d318..f11137cfdf 100644
--- a/tool/lib/colorize.rb
+++ b/tool/lib/colorize.rb
@@ -7,7 +7,7 @@ class Colorize https://github.com/ruby/ruby/blob/trunk/tool/lib/colorize.rb#L7
   def initialize(color = nil, opts = ((_, color = color, nil)[0] if Hash === color))
     @colors = @reset = nil
     @color = (opts[:color] if opts)
-    if color or (color == nil && STDOUT.tty?)
+    if color or (color == nil && STDOUT.tty? && (ENV["NO_COLOR"] || "").empty?)
       if (%w[smso so].any? {|attr| /\A\e\[.*m\z/ =~ IO.popen("tput #{attr}", "r", :err => IO::NULL, &:read)} rescue nil)
         @beg = "\e["
         colors = (colors = ENV['TEST_COLORS']) ? Hash[colors.scan(/(\w+)=([^:\n]*)/)] : {}
-- 
cgit v1.2.3


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