From 0bb73f03e495c6e2a358305a8ec6c65ca022dc19 Mon Sep 17 00:00:00 2001
From: Arthur Neves <arthurnn@gmail.com>
Date: Mon, 22 Dec 2014 15:02:02 -0500
Subject: Only add debugger/byebug if on MRI

---
 railties/lib/rails/generators/rails/plugin/templates/Gemfile | 2 +-
 railties/test/generators/app_generator_test.rb               | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/railties/lib/rails/generators/rails/plugin/templates/Gemfile b/railties/lib/rails/generators/rails/plugin/templates/Gemfile
index 35ad9fbf9e..ab8b8925eb 100644
--- a/railties/lib/rails/generators/rails/plugin/templates/Gemfile
+++ b/railties/lib/rails/generators/rails/plugin/templates/Gemfile
@@ -37,7 +37,7 @@ end
 <% end -%>
 
 <% end -%>
-<% unless defined?(JRUBY_VERSION) -%>
+<% if RUBY_ENGINE == 'ruby' -%>
 # To use a debugger
   <%- if RUBY_VERSION < '2.0.0' -%>
 # gem 'debugger', group: [:development, :test]
diff --git a/railties/test/generators/app_generator_test.rb b/railties/test/generators/app_generator_test.rb
index 5f9f7ad50a..38a082ab9e 100644
--- a/railties/test/generators/app_generator_test.rb
+++ b/railties/test/generators/app_generator_test.rb
@@ -340,7 +340,7 @@ class AppGeneratorTest < Rails::Generators::TestCase
 
   def test_inclusion_of_a_debugger
     run_generator
-    if defined?(JRUBY_VERSION)
+    if defined?(JRUBY_VERSION) || RUBY_ENGINE == 'rbx'
       assert_file "Gemfile" do |content|
         assert_no_match(/byebug/, content)
         assert_no_match(/debugger/, content)
-- 
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