From 91c95bbf8f1ac828aab71c238f1478abbf9aa7c8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Mislav=20Marohni=C4=87?= <git@mislav.net>
Date: Tue, 7 Nov 2023 16:05:27 +0100
Subject: [PATCH] Respect NO_COLOR and CLICOLOR_FORCE (#2295)

http://bixense.com/clicolors/
---
 README.md      | 2 ++
 bin/ruby-build | 6 ++++--
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index c1ece7f845..1df4744a04 100644
--- a/README.md
+++ b/README.md
@@ -95,6 +95,8 @@ The build process may be configured through the following environment variables:
 | `RUBY_CONFIGURE_OPTS`           | Additional `./configure` options (applies only to Ruby source).                                  |
 | `RUBY_MAKE_OPTS`                | Additional `make` options (applies only to Ruby source).                                         |
 | `RUBY_MAKE_INSTALL_OPTS`        | Additional `make install` options (applies only to Ruby source).                                 |
+| `NO_COLOR`                      | Disable ANSI colors in output. The default is to use colors for output connected to a terminal.  |
+| `CLICOLOR_FORCE`                | Use ANSI colors in output even when not connected to a terminal.                                 |
 
 #### Applying Patches
 
diff --git a/bin/ruby-build b/bin/ruby-build
index 167b6d9952..176ace3c4f 100755
--- a/bin/ruby-build
+++ b/bin/ruby-build
@@ -100,8 +100,10 @@ sanitize() {
 }
 
 colorize() {
-  if [ -t 1 ]; then printf "\e[%sm%s\e[m" "$1" "$2"
-  else echo -n "$2"
+  if [[ -n $CLICOLOR_FORCE || ( -z $NO_COLOR && -t 1 ) ]]; then
+    printf "\e[%sm%s\e[m" "$1" "$2"
+  else
+    printf "%s" "$2"
   fi
 }