3 files changed, 6 insertions, 61 deletions
diff --git a/railties/lib/rails/rack/debugger.rb b/railties/lib/rails/rack/debugger.rb
index f7b77bcb3b..1fde3db070 100644
--- a/railties/lib/rails/rack/debugger.rb
+++ b/railties/lib/rails/rack/debugger.rb
@@ -1,24 +1,3 @@
-module Rails
-  module Rack
-    class Debugger
-      def initialize(app)
-        @app = app
+require 'active_support/deprecation'
 
-        ARGV.clear # clear ARGV so that rails server options aren't passed to IRB
-
-        require 'debugger'
-
-        ::Debugger.start
-        ::Debugger.settings[:autoeval] = true if ::Debugger.respond_to?(:settings)
-        puts "=> Debugger enabled"
-      rescue LoadError
-        puts "You're missing the 'debugger' gem. Add it to your Gemfile, bundle it and try again."
-        exit(1)
-      end
-
-      def call(env)
-        @app.call(env)
-      end
-    end
-  end
-end
+ActiveSupport::Deprecation.warn("This file is deprecated and will be removed in Rails 5.1 with no replacement.")
diff --git a/railties/lib/rails/rack/log_tailer.rb b/railties/lib/rails/rack/log_tailer.rb
deleted file mode 100644
index bc26421a9e..0000000000
--- a/railties/lib/rails/rack/log_tailer.rb
+++ /dev/null
@@ -1,38 +0,0 @@
-require 'active_support/deprecation'
-
-module Rails
-  module Rack
-    class LogTailer
-      def initialize(app, log = nil)
-        ActiveSupport::Deprecation.warn "LogTailer is deprecated and will be removed on Rails 5"
-
-        @app = app
-
-        path = Pathname.new(log || "#{::File.expand_path(Rails.root)}/log/#{Rails.env}.log").cleanpath
-
-        @cursor = @file = nil
-        if ::File.exist?(path)
-          @cursor = ::File.size(path)
-          @file = ::File.open(path, 'r')
-        end
-      end
-
-      def call(env)
-        response = @app.call(env)
-        tail!
-        response
-      end
-
-      def tail!
-        return unless @cursor
-        @file.seek @cursor
-
-        unless @file.eof?
-          contents = @file.read
-          @cursor = @file.tell
-          $stdout.print contents
-        end
-      end
-    end
-  end
-end
diff --git a/railties/lib/rails/rack/logger.rb b/railties/lib/rails/rack/logger.rb
index 9962e6d943..12676b18bc 100644
--- a/railties/lib/rails/rack/logger.rb
+++ b/railties/lib/rails/rack/logger.rb
@@ -7,6 +7,10 @@ require 'rack/body_proxy'
 module Rails
   module Rack
     # Sets log tags, logs the request, calls the app, and flushes the logs.
+    #
+    # Log tags (+taggers+) can be an Array containing: methods that the +request+
+    # object responds to, objects that respond to +to_s+ or Proc objects that accept
+    # an instance of the +request+ object.
     class Logger < ActiveSupport::LogSubscriber
       def initialize(app, taggers = nil)
         @app          = app