From b0939478d17480740bddcbf1a902de128501433d Mon Sep 17 00:00:00 2001
From: Carlo Cabrera <30379873+carlocab@users.noreply.github.com>
Date: Thu, 21 Oct 2021 20:06:34 +0800
Subject: [PATCH 1/2] extend/os/mac/diagnostic: fix unqualified macOS version
 reference

Currently, this says something like

    Ruby version 2.6.8 is unsupported on 12.

which is a little cryptic. Let's change that to say

    Ruby version 2.6.8 is unsupported on macOS 12.
---
 Library/Homebrew/extend/os/mac/diagnostic.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Library/Homebrew/extend/os/mac/diagnostic.rb b/Library/Homebrew/extend/os/mac/diagnostic.rb
index 17b19f27fa..5c7c69e4d7 100644
--- a/Library/Homebrew/extend/os/mac/diagnostic.rb
+++ b/Library/Homebrew/extend/os/mac/diagnostic.rb
@@ -212,7 +212,7 @@ module Homebrew
         return if Homebrew::EnvConfig.developer? && OS::Mac.version.prerelease?
 
         <<~EOS
-          Ruby version #{RUBY_VERSION} is unsupported on #{MacOS.version}. Homebrew
+          Ruby version #{RUBY_VERSION} is unsupported on macOS #{MacOS.version}. Homebrew
           is developed and tested on Ruby #{required_version}, and may not work correctly
           on other Rubies. Patches are accepted as long as they don't cause breakage
           on supported Rubies.

From b040775e16c83aa5784279b48cb1dbed15c5662d Mon Sep 17 00:00:00 2001
From: Carlo Cabrera <30379873+carlocab@users.noreply.github.com>
Date: Thu, 21 Oct 2021 21:05:51 +0800
Subject: [PATCH 2/2] Fix diagnostic_spec

The test case needs to be adjusted for the new diagnostic output.
---
 Library/Homebrew/test/os/mac/diagnostic_spec.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Library/Homebrew/test/os/mac/diagnostic_spec.rb b/Library/Homebrew/test/os/mac/diagnostic_spec.rb
index c0a0e2573e..b51ac02193 100644
--- a/Library/Homebrew/test/os/mac/diagnostic_spec.rb
+++ b/Library/Homebrew/test/os/mac/diagnostic_spec.rb
@@ -38,7 +38,7 @@ describe Homebrew::Diagnostic::Checks do
     stub_const("RUBY_VERSION", "1.8.6")
 
     expect(checks.check_ruby_version)
-      .to match "Ruby version 1.8.6 is unsupported on 10.12"
+      .to match "Ruby version 1.8.6 is unsupported on macOS 10.12"
   end
 
   describe "#check_if_supported_sdk_available" do