From d6bba1c4938ea9c9a9d58ba2f209775dd71a8537 Mon Sep 17 00:00:00 2001
From: Jonathan Chang <me@jonathanchang.org>
Date: Tue, 2 Feb 2021 18:36:44 +1100
Subject: [PATCH] java: fix java_home on macOS

---
 Library/Homebrew/extend/os/language/java.rb     |  4 ++++
 Library/Homebrew/extend/os/mac/language/java.rb | 10 ++++++++++
 Library/Homebrew/language/java.rb               |  2 ++
 3 files changed, 16 insertions(+)
 create mode 100644 Library/Homebrew/extend/os/language/java.rb
 create mode 100644 Library/Homebrew/extend/os/mac/language/java.rb

diff --git a/Library/Homebrew/extend/os/language/java.rb b/Library/Homebrew/extend/os/language/java.rb
new file mode 100644
index 0000000000..3c1c0372b3
--- /dev/null
+++ b/Library/Homebrew/extend/os/language/java.rb
@@ -0,0 +1,4 @@
+# typed: strict
+# frozen_string_literal: true
+
+require "extend/os/mac/language/java" if OS.mac?
diff --git a/Library/Homebrew/extend/os/mac/language/java.rb b/Library/Homebrew/extend/os/mac/language/java.rb
new file mode 100644
index 0000000000..c7a9a01903
--- /dev/null
+++ b/Library/Homebrew/extend/os/mac/language/java.rb
@@ -0,0 +1,10 @@
+# typed: true
+# frozen_string_literal: true
+
+module Language
+  module Java
+    def self.java_home(version = nil)
+      find_openjdk_formula(version)&.opt_libexec&.join("openjdk.jdk/Contents/Home")
+    end
+  end
+end
diff --git a/Library/Homebrew/language/java.rb b/Library/Homebrew/language/java.rb
index 6b019a6658..bea3b6fd92 100644
--- a/Library/Homebrew/language/java.rb
+++ b/Library/Homebrew/language/java.rb
@@ -45,3 +45,5 @@ module Language
     end
   end
 end
+
+require "extend/os/language/java"