Keep debugger support only for rubies < 2.0.0

activesupport/lib/active_support/core_ext/kernel.rb

@@ -1,5 +1,5 @@
 require 'active_support/core_ext/kernel/agnostics'
 require 'active_support/core_ext/kernel/concern'
-require 'active_support/core_ext/kernel/debugger'
+require 'active_support/core_ext/kernel/debugger' if RUBY_VERSION < '2.0.0'
 require 'active_support/core_ext/kernel/reporting'
 require 'active_support/core_ext/kernel/singleton_class'

activesupport/test/core_ext/kernel_test.rb

@@ -137,4 +137,4 @@ class KernelDebuggerTest < ActiveSupport::TestCase
   ensure
     Object.send(:remove_const, :Rails)
   end
-end
+end if RUBY_VERSION < '2.0.0'

railties/lib/rails/commands/console.rb

@@ -18,7 +18,14 @@ module Rails
           opt.on("-e", "--environment=name", String,
                   "Specifies the environment to run this console under (test/development/production).",
                   "Default: development") { |v| options[:environment] = v.strip }
-          opt.on("--debugger", 'Enable the debugger.') { |v| options[:debugger] = v }
+          opt.on("--debugger", 'Enable the debugger.') do |v|
+            if RUBY_VERSION < '2.0.0'
+              options[:debugger] = v
+            else
+              puts "=> Notice: debugger option is ignored since ruby 2.0 and " \
+                   "it will be removed in future versions"
+            end
+          end
           opt.parse!(arguments)
         end
 
@@ -71,10 +78,13 @@ module Rails
 
     def debugger?
       options[:debugger]
-    end
+    end if RUBY_VERSION < '2.0.0'
 
     def start
-      require_debugger if debugger?
+      if RUBY_VERSION < '2.0.0'
+        require_debugger if debugger?
+      end
+
       set_environment! if environment?
 
       if sandbox?
@@ -96,6 +106,6 @@ module Rails
     rescue LoadError
       puts "You're missing the 'debugger' gem. Add it to your Gemfile, bundle it and try again."
       exit(1)
-    end
+    end if RUBY_VERSION < '2.0.0'
   end
 end

railties/lib/rails/commands/server.rb

@@ -18,7 +18,14 @@ module Rails
           opts.on("-c", "--config=file", String,
                   "Use custom rackup configuration file") { |v| options[:config] = v }
           opts.on("-d", "--daemon", "Make server run as a Daemon.") { options[:daemonize] = true }
-          opts.on("-u", "--debugger", "Enable the debugger") { options[:debugger] = true }
+          opts.on("-u", "--debugger", "Enable the debugger") do
+            if RUBY_VERSION < '2.0.0'
+              options[:debugger] = true
+            else
+              puts "=> Notice: debugger option is ignored since ruby 2.0 and " \
+                   "it will be removed in future versions"
+            end
+          end
           opts.on("-e", "--environment=name", String,
                   "Specifies the environment to run this server under (test/development/production).",
                   "Default: development") { |v| options[:environment] = v }
@@ -75,7 +82,9 @@ module Rails
 
     def middleware
       middlewares = []
-      middlewares << [Rails::Rack::Debugger] if options[:debugger]
+      if RUBY_VERSION < '2.0.0'
+        middlewares << [Rails::Rack::Debugger] if options[:debugger]
+      end
       middlewares << [::Rack::ContentLength]
 
       # FIXME: add Rack::Lock in the case people are using webrick.

railties/lib/rails/rack.rb

@@ -1,6 +1,6 @@
 module Rails
   module Rack
-    autoload :Debugger,      "rails/rack/debugger"
+    autoload :Debugger,      "rails/rack/debugger"   if RUBY_VERSION < '2.0.0'
     autoload :Logger,        "rails/rack/logger"
     autoload :LogTailer,     "rails/rack/log_tailer"
   end

railties/test/commands/console_test.rb

@@ -22,11 +22,11 @@ class Rails::ConsoleTest < ActiveSupport::TestCase
   def test_debugger_option
     console = Rails::Console.new(app, parse_arguments(["--debugger"]))
     assert console.debugger?
-  end
+  end if RUBY_VERSION < '2.0.0'
 
   def test_no_options
     console = Rails::Console.new(app, parse_arguments([]))
-    assert !console.debugger?
+    assert !console.debugger? if RUBY_VERSION < '2.0.0'
     assert !console.sandbox?
   end
 
@@ -41,7 +41,7 @@ class Rails::ConsoleTest < ActiveSupport::TestCase
     rails_console.expects(:require_debugger).returns(nil)
 
     silence_stream(STDOUT) { rails_console.start }
-  end
+  end if RUBY_VERSION < '2.0.0'
 
   def test_start_with_sandbox
     app.expects(:sandbox=).with(true)