From 5de328da5cf30367cb574ccf090714682d8c5e4d Mon Sep 17 00:00:00 2001
From: Adam Vandenberg <flangy@gmail.com>
Date: Wed, 31 Mar 2010 15:19:19 -0700
Subject: [PATCH] Ruby version check.

---
 Library/Homebrew/brew_doctor.rb | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/Library/Homebrew/brew_doctor.rb b/Library/Homebrew/brew_doctor.rb
index faba678bf7..649edf11bb 100644
--- a/Library/Homebrew/brew_doctor.rb
+++ b/Library/Homebrew/brew_doctor.rb
@@ -48,6 +48,14 @@ def check_share_locale
 end
 
 def check_usr_bin_ruby
+  if /^1\.9/.match RUBY_VERSION
+    puts <<-EOS.undent
+      Ruby version #{RUBY_VERSION} is unsupported.
+      Homebrew is developed and tested on Ruby 1.8.x, and may not work correctly
+      on Ruby 1.9.x. Patches are accepted as long as they don't break on 1.8.x.
+
+    EOS
+  end
 end
 
 def check_homebrew_prefix
@@ -60,6 +68,7 @@ def brew_doctor
     read.close
     $stdout.reopen write
     
+    check_usr_bin_ruby
     check_for_stray_dylibs
     check_gcc_versions
     check_for_other_package_managers