add tag v2_2_9

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v2_2_9@61257 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

58 files changed, 4875 insertions, 0 deletions

diff --git a/ruby_2_2/lib/rake/alt_system.rb b/ruby_2_2/lib/rake/alt_system.rb
new file mode 100644
index 0000000000..aa7b7791b6
--- /dev/null
+++ b/ruby_2_2/lib/rake/alt_system.rb
@@ -0,0 +1,110 @@
+#
+# Copyright (c) 2008 James M. Lawrence
+#
+# Permission is hereby granted, free of charge, to any person
+# obtaining a copy of this software and associated documentation files
+# (the "Software"), to deal in the Software without restriction,
+# including without limitation the rights to use, copy, modify, merge,
+# publish, distribute, sublicense, and/or sell copies of the Software,
+# and to permit persons to whom the Software is furnished to do so,
+# subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be
+# included in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+# BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+# ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+# CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+#
+
+require 'rbconfig'
+
+##
+# Alternate implementations of system() and backticks `` on Windows
+# for ruby-1.8 and earlier.
+#--
+# TODO: Remove in Rake 11
+
+module Rake::AltSystem # :nodoc: all
+  WINDOWS = RbConfig::CONFIG["host_os"] =~
+    %r!(msdos|mswin|djgpp|mingw|[Ww]indows)!
+
+  class << self
+    def define_module_function(name, &block)
+      define_method(name, &block)
+      module_function(name)
+    end
+  end
+
+  if WINDOWS && RUBY_VERSION < "1.9.0"
+    RUNNABLE_EXTS = %w[com exe bat cmd]
+    RUNNABLE_PATTERN = %r!\.(#{RUNNABLE_EXTS.join('|')})\Z!i
+
+    define_module_function :kernel_system, &Kernel.method(:system)
+    define_module_function :kernel_backticks, &Kernel.method(:'`')
+
+    module_function
+
+    def repair_command(cmd)
+      "call " + (
+        if cmd =~ %r!\A\s*\".*?\"!
+          # already quoted
+          cmd
+        elsif match = cmd.match(%r!\A\s*(\S+)!)
+          if match[1] =~ %r!/!
+            # avoid x/y.bat interpretation as x with option /y
+            %Q!"#{match[1]}"! + match.post_match
+          else
+            # a shell command will fail if quoted
+            cmd
+          end
+        else
+          # empty or whitespace
+          cmd
+        end
+      )
+    end
+
+    def find_runnable(file)
+      if file =~ RUNNABLE_PATTERN
+        file
+      else
+        RUNNABLE_EXTS.each { |ext|
+          test = "#{file}.#{ext}"
+          return test if File.exist?(test)
+        }
+        nil
+      end
+    end
+
+    def system(cmd, *args)
+      repaired = (
+        if args.empty?
+          [repair_command(cmd)]
+        elsif runnable = find_runnable(cmd)
+          [File.expand_path(runnable), *args]
+        else
+          # non-existent file
+          [cmd, *args]
+        end
+      )
+      kernel_system(*repaired)
+    end
+
+    def backticks(cmd)
+      kernel_backticks(repair_command(cmd))
+    end
+
+    define_module_function :'`', &method(:backticks)
+  else
+    # Non-Windows or ruby-1.9+: same as Kernel versions
+    define_module_function :system, &Kernel.method(:system)
+    define_module_function :backticks, &Kernel.method(:'`')
+    define_module_function :'`', &Kernel.method(:'`')
+  end
+end
diff --git a/ruby_2_2/lib/rake/application.rb b/ruby_2_2/lib/rake/application.rb
new file mode 100644
index 0000000000..bd72a2efae
--- /dev/null
+++ b/ruby_2_2/lib/rake/application.rb
@@ -0,0 +1,790 @@
+require 'shellwords'
+require 'optparse'
+
+require 'rake/task_manager'
+require 'rake/file_list'
+require 'rake/thread_pool'
+require 'rake/thread_history_display'
+require 'rake/trace_output'
+require 'rake/win32'
+
+module Rake
+
+  CommandLineOptionError = Class.new(StandardError)
+
+  ##
+  # Rake main application object.  When invoking +rake+ from the
+  # command line, a Rake::Application object is created and run.
+
+  class Application
+    include TaskManager
+    include TraceOutput
+
+    # The name of the application (typically 'rake')
+    attr_reader :name
+
+    # The original directory where rake was invoked.
+    attr_reader :original_dir
+
+    # Name of the actual rakefile used.
+    attr_reader :rakefile
+
+    # Number of columns on the terminal
+    attr_accessor :terminal_columns
+
+    # List of the top level task names (task names from the command line).
+    attr_reader :top_level_tasks
+
+    DEFAULT_RAKEFILES = [
+      'rakefile',
+      'Rakefile',
+      'rakefile.rb',
+      'Rakefile.rb'
+    ].freeze
+
+    # Initialize a Rake::Application object.
+    def initialize
+      super
+      @name = 'rake'
+      @rakefiles = DEFAULT_RAKEFILES.dup
+      @rakefile = nil
+      @pending_imports = []
+      @imported = []
+      @loaders = {}
+      @default_loader = Rake::DefaultLoader.new
+      @original_dir = Dir.pwd
+      @top_level_tasks = []
+      add_loader('rb', DefaultLoader.new)
+      add_loader('rf', DefaultLoader.new)
+      add_loader('rake', DefaultLoader.new)
+      @tty_output = STDOUT.tty?
+      @terminal_columns = ENV['RAKE_COLUMNS'].to_i
+    end
+
+    # Run the Rake application.  The run method performs the following
+    # three steps:
+    #
+    # * Initialize the command line options (+init+).
+    # * Define the tasks (+load_rakefile+).
+    # * Run the top level tasks (+top_level+).
+    #
+    # If you wish to build a custom rake command, you should call
+    # +init+ on your application.  Then define any tasks.  Finally,
+    # call +top_level+ to run your top level tasks.
+    def run
+      standard_exception_handling do
+        init
+        load_rakefile
+        top_level
+      end
+    end
+
+    # Initialize the command line parameters and app name.
+    def init(app_name='rake')
+      standard_exception_handling do
+        @name = app_name
+        args = handle_options
+        collect_command_line_tasks(args)
+      end
+    end
+
+    # Find the rakefile and then load it and any pending imports.
+    def load_rakefile
+      standard_exception_handling do
+        raw_load_rakefile
+      end
+    end
+
+    # Run the top level tasks of a Rake application.
+    def top_level
+      run_with_threads do
+        if options.show_tasks
+          display_tasks_and_comments
+        elsif options.show_prereqs
+          display_prerequisites
+        else
+          top_level_tasks.each { |task_name| invoke_task(task_name) }
+        end
+      end
+    end
+
+    # Run the given block with the thread startup and shutdown.
+    def run_with_threads
+      thread_pool.gather_history if options.job_stats == :history
+
+      yield
+
+      thread_pool.join
+      if options.job_stats
+        stats = thread_pool.statistics
+        puts "Maximum active threads: #{stats[:max_active_threads]} + main"
+        puts "Total threads in play:  #{stats[:total_threads_in_play]} + main"
+      end
+      ThreadHistoryDisplay.new(thread_pool.history).show if
+        options.job_stats == :history
+    end
+
+    # Add a loader to handle imported files ending in the extension
+    # +ext+.
+    def add_loader(ext, loader)
+      ext = ".#{ext}" unless ext =~ /^\./
+      @loaders[ext] = loader
+    end
+
+    # Application options from the command line
+    def options
+      @options ||= OpenStruct.new
+    end
+
+    # Return the thread pool used for multithreaded processing.
+    def thread_pool             # :nodoc:
+      @thread_pool ||= ThreadPool.new(options.thread_pool_size || Rake.suggested_thread_count-1)
+    end
+
+    # internal ----------------------------------------------------------------
+
+    # Invokes a task with arguments that are extracted from +task_string+
+    def invoke_task(task_string) # :nodoc:
+      name, args = parse_task_string(task_string)
+      t = self[name]
+      t.invoke(*args)
+    end
+
+    def parse_task_string(string) # :nodoc:
+      /^([^\[]+)(?:\[(.*)\])$/ =~ string.to_s
+
+      name           = $1
+      remaining_args = $2
+
+      return string, [] unless name
+      return name,   [] if     remaining_args.empty?
+
+      args = []
+
+      begin
+        /((?:[^\\,]|\\.)*?)\s*(?:,\s*(.*))?$/ =~ remaining_args
+
+        remaining_args = $2
+        args << $1.gsub(/\\(.)/, '\1')
+      end while remaining_args
+
+      return name, args
+    end
+
+    # Provide standard exception handling for the given block.
+    def standard_exception_handling # :nodoc:
+      yield
+    rescue SystemExit
+      # Exit silently with current status
+      raise
+    rescue OptionParser::InvalidOption => ex
+      $stderr.puts ex.message
+      exit(false)
+    rescue Exception => ex
+      # Exit with error message
+      display_error_message(ex)
+      exit_because_of_exception(ex)
+    end
+
+    # Exit the program because of an unhandle exception.
+    # (may be overridden by subclasses)
+    def exit_because_of_exception(ex) # :nodoc:
+      exit(false)
+    end
+
+    # Display the error message that caused the exception.
+    def display_error_message(ex) # :nodoc:
+      trace "#{name} aborted!"
+      display_exception_details(ex)
+      trace "Tasks: #{ex.chain}" if has_chain?(ex)
+      trace "(See full trace by running task with --trace)" unless
+         options.backtrace
+    end
+
+    def display_exception_details(ex) # :nodoc:
+      seen = Thread.current[:rake_display_exception_details_seen] ||= []
+      return if seen.include? ex
+      seen << ex
+
+      display_exception_message_details(ex)
+      display_exception_backtrace(ex)
+      display_exception_details(ex.cause) if has_cause?(ex)
+    end
+
+    def has_cause?(ex) # :nodoc:
+      ex.respond_to?(:cause) && ex.cause
+    end
+
+    def display_exception_message_details(ex) # :nodoc:
+      if ex.instance_of?(RuntimeError)
+        trace ex.message
+      else
+        trace "#{ex.class.name}: #{ex.message}"
+      end
+    end
+
+    def display_exception_backtrace(ex) # :nodoc:
+      if options.backtrace
+        trace ex.backtrace.join("\n")
+      else
+        trace Backtrace.collapse(ex.backtrace).join("\n")
+      end
+    end
+
+    # Warn about deprecated usage.
+    #
+    # Example:
+    #    Rake.application.deprecate("import", "Rake.import", caller.first)
+    #
+    def deprecate(old_usage, new_usage, call_site) # :nodoc:
+      unless options.ignore_deprecate
+        $stderr.puts "WARNING: '#{old_usage}' is deprecated.  " +
+          "Please use '#{new_usage}' instead.\n" +
+          "    at #{call_site}"
+      end
+    end
+
+    # Does the exception have a task invocation chain?
+    def has_chain?(exception) # :nodoc:
+      exception.respond_to?(:chain) && exception.chain
+    end
+    private :has_chain?
+
+    # True if one of the files in RAKEFILES is in the current directory.
+    # If a match is found, it is copied into @rakefile.
+    def have_rakefile # :nodoc:
+      @rakefiles.each do |fn|
+        if File.exist?(fn)
+          others = FileList.glob(fn, File::FNM_CASEFOLD)
+          return others.size == 1 ? others.first : fn
+        elsif fn == ''
+          return fn
+        end
+      end
+      return nil
+    end
+
+    # True if we are outputting to TTY, false otherwise
+    def tty_output? # :nodoc:
+      @tty_output
+    end
+
+    # Override the detected TTY output state (mostly for testing)
+    def tty_output=(tty_output_state) # :nodoc:
+      @tty_output = tty_output_state
+    end
+
+    # We will truncate output if we are outputting to a TTY or if we've been
+    # given an explicit column width to honor
+    def truncate_output? # :nodoc:
+      tty_output? || @terminal_columns.nonzero?
+    end
+
+    # Display the tasks and comments.
+    def display_tasks_and_comments # :nodoc:
+      displayable_tasks = tasks.select { |t|
+        (options.show_all_tasks || t.comment) &&
+          t.name =~ options.show_task_pattern
+      }
+      case options.show_tasks
+      when :tasks
+        width = displayable_tasks.map { |t| t.name_with_args.length }.max || 10
+        if truncate_output?
+          max_column = terminal_width - name.size - width - 7
+        else
+          max_column = nil
+        end
+
+        displayable_tasks.each do |t|
+          printf("#{name} %-#{width}s  # %s\n",
+            t.name_with_args,
+            max_column ? truncate(t.comment, max_column) : t.comment)
+        end
+      when :describe
+        displayable_tasks.each do |t|
+          puts "#{name} #{t.name_with_args}"
+          comment = t.full_comment || ""
+          comment.split("\n").each do |line|
+            puts "    #{line}"
+          end
+          puts
+        end
+      when :lines
+        displayable_tasks.each do |t|
+          t.locations.each do |loc|
+            printf "#{name} %-30s %s\n", t.name_with_args, loc
+          end
+        end
+      else
+        fail "Unknown show task mode: '#{options.show_tasks}'"
+      end
+    end
+
+    def terminal_width # :nodoc:
+      if @terminal_columns.nonzero?
+        result = @terminal_columns
+      else
+        result = unix? ? dynamic_width : 80
+      end
+      (result < 10) ? 80 : result
+    rescue
+      80
+    end
+
+    # Calculate the dynamic width of the
+    def dynamic_width # :nodoc:
+      @dynamic_width ||= (dynamic_width_stty.nonzero? || dynamic_width_tput)
+    end
+
+    def dynamic_width_stty # :nodoc:
+      %x{stty size 2>/dev/null}.split[1].to_i
+    end
+
+    def dynamic_width_tput # :nodoc:
+      %x{tput cols 2>/dev/null}.to_i
+    end
+
+    def unix? # :nodoc:
+      RbConfig::CONFIG['host_os'] =~
+        /(aix|darwin|linux|(net|free|open)bsd|cygwin|solaris|irix|hpux)/i
+    end
+
+    def windows? # :nodoc:
+      Win32.windows?
+    end
+
+    def truncate(string, width) # :nodoc:
+      if string.nil?
+        ""
+      elsif string.length <= width
+        string
+      else
+        (string[0, width - 3] || "") + "..."
+      end
+    end
+
+    # Display the tasks and prerequisites
+    def display_prerequisites # :nodoc:
+      tasks.each do |t|
+        puts "#{name} #{t.name}"
+        t.prerequisites.each { |pre| puts "    #{pre}" }
+      end
+    end
+
+    def trace(*strings) # :nodoc:
+      options.trace_output ||= $stderr
+      trace_on(options.trace_output, *strings)
+    end
+
+    def sort_options(options) # :nodoc:
+      options.sort_by { |opt|
+        opt.select { |o| o =~ /^-/ }.map { |o| o.downcase }.sort.reverse
+      }
+    end
+    private :sort_options
+
+    # A list of all the standard options used in rake, suitable for
+    # passing to OptionParser.
+    def standard_rake_options # :nodoc:
+      sort_options(
+        [
+          ['--all', '-A',
+            "Show all tasks, even uncommented ones (in combination with -T or -D)",
+            lambda { |value|
+              options.show_all_tasks = value
+            }
+          ],
+          ['--backtrace=[OUT]',
+            "Enable full backtrace.  OUT can be stderr (default) or stdout.",
+            lambda { |value|
+              options.backtrace = true
+              select_trace_output(options, 'backtrace', value)
+            }
+          ],
+          ['--build-all', '-B',
+           "Build all prerequisites, including those which are up-to-date.",
+           lambda { |value|
+             options.build_all = true
+           }
+          ],
+          ['--comments',
+            "Show commented tasks only",
+            lambda { |value|
+              options.show_all_tasks = !value
+            }
+          ],
+          ['--describe', '-D [PATTERN]',
+            "Describe the tasks (matching optional PATTERN), then exit.",
+            lambda { |value|
+              select_tasks_to_show(options, :describe, value)
+            }
+          ],
+          ['--dry-run', '-n',
+            "Do a dry run without executing actions.",
+            lambda { |value|
+              Rake.verbose(true)
+              Rake.nowrite(true)
+              options.dryrun = true
+              options.trace = true
+            }
+          ],
+          ['--execute', '-e CODE',
+            "Execute some Ruby code and exit.",
+            lambda { |value|
+              eval(value)
+              exit
+            }
+          ],
+          ['--execute-print', '-p CODE',
+            "Execute some Ruby code, print the result, then exit.",
+            lambda { |value|
+              puts eval(value)
+              exit
+            }
+          ],
+          ['--execute-continue',  '-E CODE',
+            "Execute some Ruby code, " +
+            "then continue with normal task processing.",
+            lambda { |value| eval(value) }
+          ],
+          ['--jobs',  '-j [NUMBER]',
+            "Specifies the maximum number of tasks to execute in parallel. " +
+            "(default is number of CPU cores + 4)",
+            lambda { |value|
+              if value.nil? || value == ''
+                value = FIXNUM_MAX
+              elsif value =~ /^\d+$/
+                value = value.to_i
+              else
+                value = Rake.suggested_thread_count
+              end
+              value = 1 if value < 1
+              options.thread_pool_size = value - 1
+            }
+          ],
+          ['--job-stats [LEVEL]',
+            "Display job statistics. " +
+            "LEVEL=history displays a complete job list",
+            lambda { |value|
+              if value =~ /^history/i
+                options.job_stats = :history
+              else
+                options.job_stats = true
+              end
+            }
+          ],
+          ['--libdir', '-I LIBDIR',
+            "Include LIBDIR in the search path for required modules.",
+            lambda { |value| $:.push(value) }
+          ],
+          ['--multitask', '-m',
+            "Treat all tasks as multitasks.",
+            lambda { |value| options.always_multitask = true }
+          ],
+          ['--no-search', '--nosearch',
+            '-N', "Do not search parent directories for the Rakefile.",
+            lambda { |value| options.nosearch = true }
+          ],
+          ['--prereqs', '-P',
+            "Display the tasks and dependencies, then exit.",
+            lambda { |value| options.show_prereqs = true }
+          ],
+          ['--quiet', '-q',
+            "Do not log messages to standard output.",
+            lambda { |value| Rake.verbose(false) }
+          ],
+          ['--rakefile', '-f [FILENAME]',
+            "Use FILENAME as the rakefile to search for.",
+            lambda { |value|
+              value ||= ''
+              @rakefiles.clear
+              @rakefiles << value
+            }
+          ],
+          ['--rakelibdir', '--rakelib', '-R RAKELIBDIR',
+            "Auto-import any .rake files in RAKELIBDIR. " +
+            "(default is 'rakelib')",
+            lambda { |value|
+              options.rakelib = value.split(File::PATH_SEPARATOR)
+            }
+          ],
+          ['--require', '-r MODULE',
+            "Require MODULE before executing rakefile.",
+            lambda { |value|
+              begin
+                require value
+              rescue LoadError => ex
+                begin
+                  rake_require value
+                rescue LoadError
+                  raise ex
+                end
+              end
+            }
+          ],
+          ['--rules',
+            "Trace the rules resolution.",
+            lambda { |value| options.trace_rules = true }
+          ],
+          ['--silent', '-s',
+            "Like --quiet, but also suppresses the " +
+            "'in directory' announcement.",
+            lambda { |value|
+              Rake.verbose(false)
+              options.silent = true
+            }
+          ],
+          ['--suppress-backtrace PATTERN',
+            "Suppress backtrace lines matching regexp PATTERN. " +
+            "Ignored if --trace is on.",
+            lambda { |value|
+              options.suppress_backtrace_pattern = Regexp.new(value)
+            }
+          ],
+          ['--system',  '-g',
+            "Using system wide (global) rakefiles " +
+            "(usually '~/.rake/*.rake').",
+            lambda { |value| options.load_system = true }
+          ],
+          ['--no-system', '--nosystem', '-G',
+            "Use standard project Rakefile search paths, " +
+            "ignore system wide rakefiles.",
+            lambda { |value| options.ignore_system = true }
+          ],
+          ['--tasks', '-T [PATTERN]',
+            "Display the tasks (matching optional PATTERN) " +
+            "with descriptions, then exit.",
+            lambda { |value|
+              select_tasks_to_show(options, :tasks, value)
+            }
+          ],
+          ['--trace=[OUT]', '-t',
+            "Turn on invoke/execute tracing, enable full backtrace. " +
+            "OUT can be stderr (default) or stdout.",
+            lambda { |value|
+              options.trace = true
+              options.backtrace = true
+              select_trace_output(options, 'trace', value)
+              Rake.verbose(true)
+            }
+          ],
+          ['--verbose', '-v',
+            "Log message to standard output.",
+            lambda { |value| Rake.verbose(true) }
+          ],
+          ['--version', '-V',
+            "Display the program version.",
+            lambda { |value|
+              puts "rake, version #{RAKEVERSION}"
+              exit
+            }
+          ],
+          ['--where', '-W [PATTERN]',
+            "Describe the tasks (matching optional PATTERN), then exit.",
+            lambda { |value|
+              select_tasks_to_show(options, :lines, value)
+              options.show_all_tasks = true
+            }
+          ],
+          ['--no-deprecation-warnings', '-X',
+            "Disable the deprecation warnings.",
+            lambda { |value|
+              options.ignore_deprecate = true
+            }
+          ],
+        ])
+    end
+
+    def select_tasks_to_show(options, show_tasks, value) # :nodoc:
+      options.show_tasks = show_tasks
+      options.show_task_pattern = Regexp.new(value || '')
+      Rake::TaskManager.record_task_metadata = true
+    end
+    private :select_tasks_to_show
+
+    def select_trace_output(options, trace_option, value) # :nodoc:
+      value = value.strip unless value.nil?
+      case value
+      when 'stdout'
+        options.trace_output = $stdout
+      when 'stderr', nil
+        options.trace_output = $stderr
+      else
+        fail CommandLineOptionError,
+          "Unrecognized --#{trace_option} option '#{value}'"
+      end
+    end
+    private :select_trace_output
+
+    # Read and handle the command line options.  Returns the command line
+    # arguments that we didn't understand, which should (in theory) be just
+    # task names and env vars.
+    def handle_options # :nodoc:
+      options.rakelib = ['rakelib']
+      options.trace_output = $stderr
+
+      OptionParser.new do |opts|
+        opts.banner = "#{Rake.application.name} [-f rakefile] {options} targets..."
+        opts.separator ""
+        opts.separator "Options are ..."
+
+        opts.on_tail("-h", "--help", "-H", "Display this help message.") do
+          puts opts
+          exit
+        end
+
+        standard_rake_options.each { |args| opts.on(*args) }
+        opts.environment('RAKEOPT')
+      end.parse(ARGV)
+    end
+
+    # Similar to the regular Ruby +require+ command, but will check
+    # for *.rake files in addition to *.rb files.
+    def rake_require(file_name, paths=$LOAD_PATH, loaded=$") # :nodoc:
+      fn = file_name + ".rake"
+      return false if loaded.include?(fn)
+      paths.each do |path|
+        full_path = File.join(path, fn)
+        if File.exist?(full_path)
+          Rake.load_rakefile(full_path)
+          loaded << fn
+          return true
+        end
+      end
+      fail LoadError, "Can't find #{file_name}"
+    end
+
+    def find_rakefile_location # :nodoc:
+      here = Dir.pwd
+      until (fn = have_rakefile)
+        Dir.chdir("..")
+        return nil if Dir.pwd == here || options.nosearch
+        here = Dir.pwd
+      end
+      [fn, here]
+    ensure
+      Dir.chdir(Rake.original_dir)
+    end
+
+    def print_rakefile_directory(location) # :nodoc:
+      $stderr.puts "(in #{Dir.pwd})" unless
+        options.silent or original_dir == location
+    end
+
+    def raw_load_rakefile # :nodoc:
+      rakefile, location = find_rakefile_location
+      if (! options.ignore_system) &&
+          (options.load_system || rakefile.nil?) &&
+          system_dir && File.directory?(system_dir)
+        print_rakefile_directory(location)
+        glob("#{system_dir}/*.rake") do |name|
+          add_import name
+        end
+      else
+        fail "No Rakefile found (looking for: #{@rakefiles.join(', ')})" if
+          rakefile.nil?
+        @rakefile = rakefile
+        Dir.chdir(location)
+        print_rakefile_directory(location)
+        Rake.load_rakefile(File.expand_path(@rakefile)) if
+          @rakefile && @rakefile != ''
+        options.rakelib.each do |rlib|
+          glob("#{rlib}/*.rake") do |name|
+            add_import name
+          end
+        end
+      end
+      load_imports
+    end
+
+    def glob(path, &block) # :nodoc:
+      FileList.glob(path.gsub("\\", '/')).each(&block)
+    end
+    private :glob
+
+    # The directory path containing the system wide rakefiles.
+    def system_dir # :nodoc:
+      @system_dir ||=
+        begin
+          if ENV['RAKE_SYSTEM']
+            ENV['RAKE_SYSTEM']
+          else
+            standard_system_dir
+          end
+        end
+    end
+
+    # The standard directory containing system wide rake files.
+    if Win32.windows?
+      def standard_system_dir #:nodoc:
+        Win32.win32_system_dir
+      end
+    else
+      def standard_system_dir #:nodoc:
+        File.join(File.expand_path('~'), '.rake')
+      end
+    end
+    private :standard_system_dir
+
+    # Collect the list of tasks on the command line.  If no tasks are
+    # given, return a list containing only the default task.
+    # Environmental assignments are processed at this time as well.
+    #
+    # `args` is the list of arguments to peruse to get the list of tasks.
+    # It should be the command line that was given to rake, less any
+    # recognised command-line options, which OptionParser.parse will
+    # have taken care of already.
+    def collect_command_line_tasks(args) # :nodoc:
+      @top_level_tasks = []
+      args.each do |arg|
+        if arg =~ /^(\w+)=(.*)$/m
+          ENV[$1] = $2
+        else
+          @top_level_tasks << arg unless arg =~ /^-/
+        end
+      end
+      @top_level_tasks.push(default_task_name) if @top_level_tasks.empty?
+    end
+
+    # Default task name ("default").
+    # (May be overridden by subclasses)
+    def default_task_name # :nodoc:
+      "default"
+    end
+
+    # Add a file to the list of files to be imported.
+    def add_import(fn) # :nodoc:
+      @pending_imports << fn
+    end
+
+    # Load the pending list of imported files.
+    def load_imports # :nodoc:
+      while fn = @pending_imports.shift
+        next if @imported.member?(fn)
+        fn_task = lookup(fn) and fn_task.invoke
+        ext = File.extname(fn)
+        loader = @loaders[ext] || @default_loader
+        loader.load(fn)
+        if fn_task = lookup(fn) and fn_task.needed?
+          fn_task.reenable
+          fn_task.invoke
+          loader.load(fn)
+        end
+        @imported << fn
+      end
+    end
+
+    def rakefile_location(backtrace=caller) # :nodoc:
+      backtrace.map { |t| t[/([^:]+):/, 1] }
+
+      re = /^#{@rakefile}$/
+      re = /#{re.source}/i if windows?
+
+      backtrace.find { |str| str =~ re } || ''
+    end
+
+  private
+    FIXNUM_MAX = (2**(0.size * 8 - 2) - 1) # :nodoc:
+
+  end
+end
diff --git a/ruby_2_2/lib/rake/backtrace.rb b/ruby_2_2/lib/rake/backtrace.rb
new file mode 100644
index 0000000000..dc18773436
--- /dev/null
+++ b/ruby_2_2/lib/rake/backtrace.rb
@@ -0,0 +1,23 @@
+module Rake
+  module Backtrace # :nodoc: all
+    SYS_KEYS  = RbConfig::CONFIG.keys.grep(/(?:[a-z]prefix|libdir)\z/)
+    SYS_PATHS = RbConfig::CONFIG.values_at(*SYS_KEYS).uniq +
+      [ File.join(File.dirname(__FILE__), "..") ]
+
+    SUPPRESSED_PATHS = SYS_PATHS.
+      map { |s| s.gsub("\\", "/") }.
+      map { |f| File.expand_path(f) }.
+      reject { |s| s.nil? || s =~ /^ *$/ }
+    SUPPRESSED_PATHS_RE = SUPPRESSED_PATHS.map { |f| Regexp.quote(f) }.join("|")
+    SUPPRESSED_PATHS_RE << "|^org\\/jruby\\/\\w+\\.java" if
+      Object.const_defined?(:RUBY_ENGINE) and RUBY_ENGINE == 'jruby'
+
+    SUPPRESS_PATTERN = %r!(\A(#{SUPPRESSED_PATHS_RE})|bin/rake:\d+)!i
+
+    def self.collapse(backtrace)
+      pattern = Rake.application.options.suppress_backtrace_pattern ||
+                SUPPRESS_PATTERN
+      backtrace.reject { |elem| elem =~ pattern }
+    end
+  end
+end
diff --git a/ruby_2_2/lib/rake/clean.rb b/ruby_2_2/lib/rake/clean.rb
new file mode 100644
index 0000000000..a49cd44167
--- /dev/null
+++ b/ruby_2_2/lib/rake/clean.rb
@@ -0,0 +1,76 @@
+# The 'rake/clean' file defines two file lists (CLEAN and CLOBBER) and
+# two rake tasks (:clean and :clobber).
+#
+# [:clean] Clean up the project by deleting scratch files and backup
+#          files.  Add files to the CLEAN file list to have the :clean
+#          target handle them.
+#
+# [:clobber] Clobber all generated and non-source files in a project.
+#            The task depends on :clean, so all the clean files will
+#            be deleted as well as files in the CLOBBER file list.
+#            The intent of this task is to return a project to its
+#            pristine, just unpacked state.
+
+require 'rake'
+
+# :stopdoc:
+
+module Rake
+  module Cleaner
+    extend FileUtils
+
+    module_function
+
+    def cleanup_files(file_names)
+      file_names.each do |file_name|
+        cleanup(file_name)
+      end
+    end
+
+    def cleanup(file_name, opts={})
+      begin
+        rm_r file_name, opts
+      rescue StandardError => ex
+        puts "Failed to remove #{file_name}: #{ex}" unless file_already_gone?(file_name)
+      end
+    end
+
+    def file_already_gone?(file_name)
+      return false if File.exist?(file_name)
+
+      path = file_name
+      prev = nil
+
+      while path = File.dirname(path)
+        return false if cant_be_deleted?(path)
+        break if [prev, "."].include?(path)
+        prev = path
+      end
+      true
+    end
+    private_class_method :file_already_gone?
+
+    def cant_be_deleted?(path_name)
+      File.exist?(path_name) &&
+        (!File.readable?(path_name) || !File.executable?(path_name))
+    end
+    private_class_method :cant_be_deleted?
+  end
+end
+
+CLEAN = ::Rake::FileList["**/*~", "**/*.bak", "**/core"]
+CLEAN.clear_exclude.exclude { |fn|
+  fn.pathmap("%f").downcase == 'core' && File.directory?(fn)
+}
+
+desc "Remove any temporary products."
+task :clean do
+  Rake::Cleaner.cleanup_files(CLEAN)
+end
+
+CLOBBER = ::Rake::FileList.new
+
+desc "Remove any generated file."
+task :clobber => [:clean] do
+  Rake::Cleaner.cleanup_files(CLOBBER)
+end
diff --git a/ruby_2_2/lib/rake/cloneable.rb b/ruby_2_2/lib/rake/cloneable.rb
new file mode 100644
index 0000000000..d53645f2f3
--- /dev/null
+++ b/ruby_2_2/lib/rake/cloneable.rb
@@ -0,0 +1,16 @@
+module Rake
+  ##
+  # Mixin for creating easily cloned objects.
+
+  module Cloneable # :nodoc:
+    # The hook that is invoked by 'clone' and 'dup' methods.
+    def initialize_copy(source)
+      super
+      source.instance_variables.each do |var|
+        src_value  = source.instance_variable_get(var)
+        value = src_value.clone rescue src_value
+        instance_variable_set(var, value)
+      end
+    end
+  end
+end
diff --git a/ruby_2_2/lib/rake/contrib/.document b/ruby_2_2/lib/rake/contrib/.document
new file mode 100644
index 0000000000..8b13789179
--- /dev/null
+++ b/ruby_2_2/lib/rake/contrib/.document
@@ -0,0 +1 @@
+
diff --git a/ruby_2_2/lib/rake/contrib/compositepublisher.rb b/ruby_2_2/lib/rake/contrib/compositepublisher.rb
new file mode 100644
index 0000000000..69952a0808
--- /dev/null
+++ b/ruby_2_2/lib/rake/contrib/compositepublisher.rb
@@ -0,0 +1,21 @@
+module Rake
+
+  # Manage several publishers as a single entity.
+  class CompositePublisher
+    def initialize
+      @publishers = []
+    end
+
+    # Add a publisher to the composite.
+    def add(pub)
+      @publishers << pub
+    end
+
+    # Upload all the individual publishers.
+    def upload
+      @publishers.each { |p| p.upload }
+    end
+  end
+
+end
+
diff --git a/ruby_2_2/lib/rake/contrib/ftptools.rb b/ruby_2_2/lib/rake/contrib/ftptools.rb
new file mode 100644
index 0000000000..b178523bc6
--- /dev/null
+++ b/ruby_2_2/lib/rake/contrib/ftptools.rb
@@ -0,0 +1,137 @@
+# = Tools for FTP uploading.
+#
+# This file is still under development and is not released for general
+# use.
+
+require 'date'
+require 'net/ftp'
+require 'rake/file_list'
+
+module Rake # :nodoc:
+
+  class FtpFile # :nodoc: all
+    attr_reader :name, :size, :owner, :group, :time
+
+    def self.date
+      @date_class ||= Date
+    end
+
+    def self.time
+      @time_class ||= Time
+    end
+
+    def initialize(path, entry)
+      @path = path
+      @mode, _, @owner, @group, size, d1, d2, d3, @name = entry.split(' ')
+      @size = size.to_i
+      @time = determine_time(d1, d2, d3)
+    end
+
+    def path
+      File.join(@path, @name)
+    end
+
+    def directory?
+      @mode[0] == ?d
+    end
+
+    def mode
+      parse_mode(@mode)
+    end
+
+    def symlink?
+      @mode[0] == ?l
+    end
+
+    private # --------------------------------------------------------
+
+    def parse_mode(m)
+      result = 0
+      (1..9).each do |i|
+        result = 2 * result + ((m[i] == ?-) ? 0 : 1)
+      end
+      result
+    end
+
+    def determine_time(d1, d2, d3)
+      now = self.class.time.now
+      if /:/ !~ d3
+        result = Time.parse("#{d1} #{d2} #{d3}")
+      else
+        result = Time.parse("#{d1} #{d2} #{now.year} #{d3}")
+        result = Time.parse("#{d1} #{d2} #{now.year - 1} #{d3}") if
+          result > now
+      end
+      result
+    end
+  end
+
+  ##
+  # Manage the uploading of files to an FTP account.
+  class FtpUploader # :nodoc:
+
+    # Log uploads to standard output when true.
+    attr_accessor :verbose
+
+    class << FtpUploader
+      # Create an uploader and pass it to the given block as +up+.
+      # When the block is complete, close the uploader.
+      def connect(path, host, account, password)
+        up = self.new(path, host, account, password)
+        begin
+          yield(up)
+        ensure
+          up.close
+        end
+      end
+    end
+
+    # Create an FTP uploader targeting the directory +path+ on +host+
+    # using the given account and password.  +path+ will be the root
+    # path of the uploader.
+    def initialize(path, host, account, password)
+      @created = Hash.new
+      @path = path
+      @ftp = Net::FTP.new(host, account, password)
+      makedirs(@path)
+      @ftp.chdir(@path)
+    end
+
+    # Create the directory +path+ in the uploader root path.
+    def makedirs(path)
+      route = []
+      File.split(path).each do |dir|
+        route << dir
+        current_dir = File.join(route)
+        if @created[current_dir].nil?
+          @created[current_dir] = true
+          $stderr.puts "Creating Directory  #{current_dir}" if @verbose
+          @ftp.mkdir(current_dir) rescue nil
+        end
+      end
+    end
+
+    # Upload all files matching +wildcard+ to the uploader's root
+    # path.
+    def upload_files(wildcard)
+      FileList.glob(wildcard).each do |fn|
+        upload(fn)
+      end
+    end
+
+    # Close the uploader.
+    def close
+      @ftp.close
+    end
+
+    private # --------------------------------------------------------
+
+    # Upload a single file to the uploader's root path.
+    def upload(file)
+      $stderr.puts "Uploading #{file}" if @verbose
+      dir = File.dirname(file)
+      makedirs(dir)
+      @ftp.putbinaryfile(file, file) unless File.directory?(file)
+    end
+  end
+end
diff --git a/ruby_2_2/lib/rake/contrib/publisher.rb b/ruby_2_2/lib/rake/contrib/publisher.rb
new file mode 100644
index 0000000000..f4ee1abf86
--- /dev/null
+++ b/ruby_2_2/lib/rake/contrib/publisher.rb
@@ -0,0 +1,81 @@
+# Copyright 2003-2010 by Jim Weirich (jim.weirich@gmail.com)
+# All rights reserved.
+
+# :stopdoc:
+
+# Configuration information about an upload host system.
+# name   :: Name of host system.
+# webdir :: Base directory for the web information for the
+#           application.  The application name (APP) is appended to
+#           this directory before using.
+# pkgdir :: Directory on the host system where packages can be
+#           placed.
+HostInfo = Struct.new(:name, :webdir, :pkgdir)
+
+# :startdoc:
+
+# TODO: Move to contrib/sshpublisher
+#--
+# Manage several publishers as a single entity.
+class CompositePublisher # :nodoc:
+  def initialize
+    @publishers = []
+  end
+
+  # Add a publisher to the composite.
+  def add(pub)
+    @publishers << pub
+  end
+
+  # Upload all the individual publishers.
+  def upload
+    @publishers.each { |p| p.upload }
+  end
+end
+
+# TODO: Remove in Rake 11, duplicated
+#--
+# Publish an entire directory to an existing remote directory using
+# SSH.
+class SshDirPublisher # :nodoc: all
+  def initialize(host, remote_dir, local_dir)
+    @host = host
+    @remote_dir = remote_dir
+    @local_dir = local_dir
+  end
+
+  def upload
+    run %{scp -rq #{@local_dir}/* #{@host}:#{@remote_dir}}
+  end
+end
+
+# TODO: Remove in Rake 11, duplicated
+#--
+# Publish an entire directory to a fresh remote directory using SSH.
+class SshFreshDirPublisher < SshDirPublisher # :nodoc: all
+  def upload
+    run %{ssh #{@host} rm -rf #{@remote_dir}} rescue nil
+    run %{ssh #{@host} mkdir #{@remote_dir}}
+    super
+  end
+end
+
+# TODO: Remove in Rake 11, duplicated
+#--
+# Publish a list of files to an existing remote directory.
+class SshFilePublisher # :nodoc: all
+  # Create a publisher using the give host information.
+  def initialize(host, remote_dir, local_dir, *files)
+    @host = host
+    @remote_dir = remote_dir
+    @local_dir = local_dir
+    @files = files
+  end
+
+  # Upload the local directory to the remote directory.
+  def upload
+    @files.each do |fn|
+      run %{scp -q #{@local_dir}/#{fn} #{@host}:#{@remote_dir}}
+    end
+  end
+end
diff --git a/ruby_2_2/lib/rake/contrib/rubyforgepublisher.rb b/ruby_2_2/lib/rake/contrib/rubyforgepublisher.rb
new file mode 100644
index 0000000000..00889ad7b9
--- /dev/null
+++ b/ruby_2_2/lib/rake/contrib/rubyforgepublisher.rb
@@ -0,0 +1,18 @@
+# TODO: Remove in Rake 11
+
+require 'rake/contrib/sshpublisher'
+
+module Rake
+
+  class RubyForgePublisher < SshDirPublisher # :nodoc: all
+    attr_reader :project, :proj_id, :user
+
+    def initialize(projname, user)
+      super(
+        "#{user}@rubyforge.org",
+        "/var/www/gforge-projects/#{projname}",
+        "html")
+    end
+  end
+
+end
diff --git a/ruby_2_2/lib/rake/contrib/sshpublisher.rb b/ruby_2_2/lib/rake/contrib/sshpublisher.rb
new file mode 100644
index 0000000000..64f577017c
--- /dev/null
+++ b/ruby_2_2/lib/rake/contrib/sshpublisher.rb
@@ -0,0 +1,61 @@
+require 'rake/dsl_definition'
+require 'rake/contrib/compositepublisher'
+
+module Rake
+
+  # Publish an entire directory to an existing remote directory using
+  # SSH.
+  class SshDirPublisher
+    include Rake::DSL
+
+    # Creates an SSH publisher which will scp all files in +local_dir+ to
+    # +remote_dir+ on +host+
+
+    def initialize(host, remote_dir, local_dir)
+      @host = host
+      @remote_dir = remote_dir
+      @local_dir = local_dir
+    end
+
+    # Uploads the files
+
+    def upload
+      sh "scp", "-rq", "#{@local_dir}/*", "#{@host}:#{@remote_dir}"
+    end
+  end
+
+  # Publish an entire directory to a fresh remote directory using SSH.
+  class SshFreshDirPublisher < SshDirPublisher
+
+    # Uploads the files after removing the existing remote directory.
+
+    def upload
+      sh "ssh", @host, "rm", "-rf", @remote_dir rescue nil
+      sh "ssh", @host, "mkdir",     @remote_dir
+      super
+    end
+  end
+
+  # Publish a list of files to an existing remote directory.
+  class SshFilePublisher
+    include Rake::DSL
+
+    # Creates an SSH publisher which will scp all +files+ in +local_dir+ to
+    # +remote_dir+ on +host+.
+
+    def initialize(host, remote_dir, local_dir, *files)
+      @host = host
+      @remote_dir = remote_dir
+      @local_dir = local_dir
+      @files = files
+    end
+
+    # Uploads the files
+
+    def upload
+      @files.each do |fn|
+        sh "scp", "-q", "#{@local_dir}/#{fn}", "#{@host}:#{@remote_dir}"
+      end
+    end
+  end
+end
diff --git a/ruby_2_2/lib/rake/contrib/sys.rb b/ruby_2_2/lib/rake/contrib/sys.rb
new file mode 100644
index 0000000000..8d4c735434
--- /dev/null
+++ b/ruby_2_2/lib/rake/contrib/sys.rb
@@ -0,0 +1,4 @@
+# TODO: Remove in Rake 11
+
+fail "ERROR: 'rake/contrib/sys' is obsolete and no longer supported. " +
+  "Use 'FileUtils' instead."
diff --git a/ruby_2_2/lib/rake/cpu_counter.rb b/ruby_2_2/lib/rake/cpu_counter.rb
new file mode 100644
index 0000000000..f29778ed5d
--- /dev/null
+++ b/ruby_2_2/lib/rake/cpu_counter.rb
@@ -0,0 +1,125 @@
+module Rake
+
+  # Based on a script at:
+  #   http://stackoverflow.com/questions/891537/ruby-detect-number-of-cpus-installed
+  class CpuCounter # :nodoc: all
+    def self.count
+      new.count_with_default
+    end
+
+    def count_with_default(default=4)
+      count || default
+    rescue StandardError
+      default
+    end
+
+    begin
+      require 'etc'
+    rescue LoadError
+    else
+      if Etc.respond_to?(:nprocessors)
+        def count
+          return Etc.nprocessors
+        end
+      end
+    end
+  end
+end
+
+unless Rake::CpuCounter.method_defined?(:count)
+  Rake::CpuCounter.class_eval <<-'end;', __FILE__, __LINE__+1
+    require 'rbconfig'
+
+    # TODO: replace with IO.popen using array-style arguments in Rake 11
+    require 'open3'
+
+    def count
+      if defined?(Java::Java)
+        count_via_java_runtime
+      else
+        case RbConfig::CONFIG['host_os']
+        when /darwin9/
+          count_via_hwprefs_cpu_count
+        when /darwin/
+          count_via_hwprefs_thread_count || count_via_sysctl
+        when /linux/
+          count_via_cpuinfo
+        when /bsd/
+          count_via_sysctl
+        when /mswin|mingw/
+          count_via_win32
+        else
+          # Try everything
+          count_via_win32 ||
+            count_via_sysctl ||
+            count_via_hwprefs_thread_count ||
+            count_via_hwprefs_cpu_count ||
+            count_via_cpuinfo
+        end
+      end
+    end
+
+    def count_via_java_runtime
+      Java::Java.lang.Runtime.getRuntime.availableProcessors
+    rescue StandardError
+      nil
+    end
+
+    def count_via_win32
+      require 'win32ole'
+      wmi = WIN32OLE.connect("winmgmts://")
+      cpu = wmi.ExecQuery("select NumberOfCores from Win32_Processor") # TODO count hyper-threaded in this
+      cpu.to_enum.first.NumberOfCores
+    rescue StandardError, LoadError
+      nil
+    end
+
+    def count_via_cpuinfo
+      open('/proc/cpuinfo') { |f| f.readlines }.grep(/processor/).size
+    rescue StandardError
+      nil
+    end
+
+    def count_via_hwprefs_thread_count
+      run 'hwprefs', 'thread_count'
+    end
+
+    def count_via_hwprefs_cpu_count
+      run 'hwprefs', 'cpu_count'
+    end
+
+    def count_via_sysctl
+      run 'sysctl', '-n', 'hw.ncpu'
+    end
+
+    def run(command, *args)
+      cmd = resolve_command(command)
+      if cmd
+        Open3.popen3 cmd, *args do |inn, out, err,|
+          inn.close
+          err.read
+          out.read.to_i
+        end
+      else
+        nil
+      end
+    end
+
+    def resolve_command(command)
+      look_for_command("/usr/sbin", command) ||
+        look_for_command("/sbin", command) ||
+        in_path_command(command)
+    end
+
+    def look_for_command(dir, command)
+      path = File.join(dir, command)
+      File.exist?(path) ? path : nil
+    end
+
+    def in_path_command(command)
+      Open3.popen3 'which', command do |_, out,|
+        out.eof? ? nil : command
+      end
+    end
+  end;
+end
diff --git a/ruby_2_2/lib/rake/default_loader.rb b/ruby_2_2/lib/rake/default_loader.rb
new file mode 100644
index 0000000000..6154408f44
--- /dev/null
+++ b/ruby_2_2/lib/rake/default_loader.rb
@@ -0,0 +1,14 @@
+module Rake
+
+  # Default Rakefile loader used by +import+.
+  class DefaultLoader
+
+    ##
+    # Loads a rakefile into the current application from +fn+
+
+    def load(fn)
+      Rake.load_rakefile(File.expand_path(fn))
+    end
+  end
+
+end
diff --git a/ruby_2_2/lib/rake/dsl_definition.rb b/ruby_2_2/lib/rake/dsl_definition.rb
new file mode 100644
index 0000000000..26f4ca828c
--- /dev/null
+++ b/ruby_2_2/lib/rake/dsl_definition.rb
@@ -0,0 +1,201 @@
+# Rake DSL functions.
+require 'rake/file_utils_ext'
+
+module Rake
+
+  ##
+  # DSL is a module that provides #task, #desc, #namespace, etc.  Use this
+  # when you'd like to use rake outside the top level scope.
+  #
+  # For a Rakefile you run from the comamnd line this module is automatically
+  # included.
+
+  module DSL
+
+    #--
+    # Include the FileUtils file manipulation functions in the top
+    # level module, but mark them private so that they don't
+    # unintentionally define methods on other objects.
+    #++
+
+    include FileUtilsExt
+    private(*FileUtils.instance_methods(false))
+    private(*FileUtilsExt.instance_methods(false))
+
+    private
+
+    # :call-seq:
+    #   task task_name
+    #   task task_name: dependencies
+    #   task task_name, arguments => dependencies
+    #   task task_name, argument[, argument ...], :needs: dependencies
+    #
+    # Declare a basic task.  The +task_name+ is always the first argument.  If
+    # the task name contains a ":" it is defined in that namespace.
+    #
+    # The +dependencies+ may be a single task name or an Array of task names.
+    # The +argument+ (a single name) or +arguments+ (an Array of names) define
+    # the arguments provided to the task.
+    #
+    # The task, argument and dependency names may be either symbols or
+    # strings.
+    #
+    # A task with a single dependency:
+    #
+    #   task clobber: %w[clean] do
+    #     rm_rf "html"
+    #   end
+    #
+    # A task with an argument and a dependency:
+    #
+    #   task :package, [:version] => :test do |t, args|
+    #     # ...
+    #   end
+    #
+    # To invoke this task from the command line:
+    #
+    #   $ rake package[1.2.3]
+    #
+    # Alternate definition:
+    #
+    #   task :package, :version, needs: :test do |t, args|
+    #     # ...
+    #   end
+    #
+    def task(*args, &block) # :doc:
+      Rake::Task.define_task(*args, &block)
+    end
+
+    # Declare a file task.
+    #
+    # Example:
+    #   file "config.cfg" => ["config.template"] do
+    #     open("config.cfg", "w") do |outfile|
+    #       open("config.template") do |infile|
+    #         while line = infile.gets
+    #           outfile.puts line
+    #         end
+    #       end
+    #     end
+    #  end
+    #
+    def file(*args, &block) # :doc:
+      Rake::FileTask.define_task(*args, &block)
+    end
+
+    # Declare a file creation task.
+    # (Mainly used for the directory command).
+    def file_create(*args, &block)
+      Rake::FileCreationTask.define_task(*args, &block)
+    end
+
+    # Declare a set of files tasks to create the given directories on
+    # demand.
+    #
+    # Example:
+    #   directory "testdata/doc"
+    #
+    def directory(*args, &block) # :doc:
+      result = file_create(*args, &block)
+      dir, _ = *Rake.application.resolve_args(args)
+      dir = Rake.from_pathname(dir)
+      Rake.each_dir_parent(dir) do |d|
+        file_create d do |t|
+          mkdir_p t.name unless File.exist?(t.name)
+        end
+      end
+      result
+    end
+
+    # Declare a task that performs its prerequisites in
+    # parallel. Multitasks does *not* guarantee that its prerequisites
+    # will execute in any given order (which is obvious when you think
+    # about it)
+    #
+    # Example:
+    #   multitask deploy: %w[deploy_gem deploy_rdoc]
+    #
+    def multitask(*args, &block) # :doc:
+      Rake::MultiTask.define_task(*args, &block)
+    end
+
+    # Create a new rake namespace and use it for evaluating the given
+    # block.  Returns a NameSpace object that can be used to lookup
+    # tasks defined in the namespace.
+    #
+    # Example:
+    #
+    #   ns = namespace "nested" do
+    #     # the "nested:run" task
+    #     task :run
+    #   end
+    #   task_run = ns[:run] # find :run in the given namespace.
+    #
+    # Tasks can also be defined in a namespace by using a ":" in the task
+    # name:
+    #
+    #   task "nested:test" do
+    #     # ...
+    #   end
+    #
+    def namespace(name=nil, &block) # :doc:
+      name = name.to_s if name.kind_of?(Symbol)
+      name = name.to_str if name.respond_to?(:to_str)
+      unless name.kind_of?(String) || name.nil?
+        raise ArgumentError, "Expected a String or Symbol for a namespace name"
+      end
+      Rake.application.in_namespace(name, &block)
+    end
+
+    # Declare a rule for auto-tasks.
+    #
+    # Example:
+    #  rule '.o' => '.c' do |t|
+    #    sh 'cc', '-o', t.name, t.source
+    #  end
+    #
+    def rule(*args, &block) # :doc:
+      Rake::Task.create_rule(*args, &block)
+    end
+
+    # Describes the next rake task.  Duplicate descriptions are discarded.
+    # Descriptions are shown with <code>rake -T</code> (up to the first
+    # sentence) and <code>rake -D</code> (the entire description).
+    #
+    # Example:
+    #   desc "Run the Unit Tests"
+    #   task test: [:build]
+    #     # ... run tests
+    #   end
+    #
+    def desc(description) # :doc:
+      Rake.application.last_description = description
+    end
+
+    # Import the partial Rakefiles +fn+.  Imported files are loaded
+    # _after_ the current file is completely loaded.  This allows the
+    # import statement to appear anywhere in the importing file, and yet
+    # allowing the imported files to depend on objects defined in the
+    # importing file.
+    #
+    # A common use of the import statement is to include files
+    # containing dependency declarations.
+    #
+    # See also the --rakelibdir command line option.
+    #
+    # Example:
+    #   import ".depend", "my_rules"
+    #
+    def import(*fns) # :doc:
+      fns.each do |fn|
+        Rake.application.add_import(fn)
+      end
+    end
+  end
+  extend FileUtilsExt
+end
+
+# Extend the main object with the DSL commands. This allows top-level
+# calls to task, etc. to work from a Rakefile without polluting the
+# object inheritance tree.
+self.extend Rake::DSL
diff --git a/ruby_2_2/lib/rake/early_time.rb b/ruby_2_2/lib/rake/early_time.rb
new file mode 100644
index 0000000000..abcb1872b5
--- /dev/null
+++ b/ruby_2_2/lib/rake/early_time.rb
@@ -0,0 +1,21 @@
+module Rake
+
+  # EarlyTime is a fake timestamp that occurs _before_ any other time value.
+  class EarlyTime
+    include Comparable
+    include Singleton
+
+    ##
+    # The EarlyTime always comes before +other+!
+
+    def <=>(other)
+      -1
+    end
+
+    def to_s # :nodoc:
+      "<EARLY TIME>"
+    end
+  end
+
+  EARLY = EarlyTime.instance
+end
diff --git a/ruby_2_2/lib/rake/ext/core.rb b/ruby_2_2/lib/rake/ext/core.rb
new file mode 100644
index 0000000000..7575df15a9
--- /dev/null
+++ b/ruby_2_2/lib/rake/ext/core.rb
@@ -0,0 +1,25 @@
+class Module
+  # Check for an existing method in the current class before extending.  If
+  # the method already exists, then a warning is printed and the extension is
+  # not added.  Otherwise the block is yielded and any definitions in the
+  # block will take effect.
+  #
+  # Usage:
+  #
+  #   class String
+  #     rake_extension("xyz") do
+  #       def xyz
+  #         ...
+  #       end
+  #     end
+  #   end
+  #
+  def rake_extension(method) # :nodoc:
+    if method_defined?(method)
+      $stderr.puts "WARNING: Possible conflict with Rake extension: " +
+        "#{self}##{method} already exists"
+    else
+      yield
+    end
+  end
+end
diff --git a/ruby_2_2/lib/rake/ext/module.rb b/ruby_2_2/lib/rake/ext/module.rb
new file mode 100644
index 0000000000..3ee155ff6c
--- /dev/null
+++ b/ruby_2_2/lib/rake/ext/module.rb
@@ -0,0 +1,2 @@
+
+# TODO: remove in Rake 11
diff --git a/ruby_2_2/lib/rake/ext/pathname.rb b/ruby_2_2/lib/rake/ext/pathname.rb
new file mode 100644
index 0000000000..49e2cd47ac
--- /dev/null
+++ b/ruby_2_2/lib/rake/ext/pathname.rb
@@ -0,0 +1,25 @@
+require 'rake/ext/core'
+require 'pathname'
+
+class Pathname
+
+  rake_extension("ext") do
+    # Return a new Pathname with <tt>String#ext</tt> applied to it.
+    #
+    # This Pathname extension comes from Rake
+    def ext(newext='')
+      Pathname.new(Rake.from_pathname(self).ext(newext))
+    end
+  end
+
+  rake_extension("pathmap") do
+    # Apply the pathmap spec to the Pathname, returning a
+    # new Pathname with the modified paths.  (See String#pathmap for
+    # details.)
+    #
+    # This Pathname extension comes from Rake
+    def pathmap(spec=nil, &block)
+      Pathname.new(Rake.from_pathname(self).pathmap(spec, &block))
+    end
+  end
+end
diff --git a/ruby_2_2/lib/rake/ext/string.rb b/ruby_2_2/lib/rake/ext/string.rb
new file mode 100644
index 0000000000..b47b055a74
--- /dev/null
+++ b/ruby_2_2/lib/rake/ext/string.rb
@@ -0,0 +1,173 @@
+require 'rake/ext/core'
+
+class String
+
+  rake_extension("ext") do
+    # Replace the file extension with +newext+.  If there is no extension on
+    # the string, append the new extension to the end.  If the new extension
+    # is not given, or is the empty string, remove any existing extension.
+    #
+    # +ext+ is a user added method for the String class.
+    #
+    # This String extension comes from Rake
+    def ext(newext='')
+      return self.dup if ['.', '..'].include? self
+      newext = (newext =~ /^\./) ? newext : ("." + newext) if newext != ''
+      self.chomp(File.extname(self)) << newext
+    end
+  end
+
+  rake_extension("pathmap") do
+    # Explode a path into individual components.  Used by +pathmap+.
+    #
+    # This String extension comes from Rake
+    def pathmap_explode
+      head, tail = File.split(self)
+      return [self] if head == self
+      return [tail] if head == '.' || tail == '/'
+      return [head, tail] if head == '/'
+      return head.pathmap_explode + [tail]
+    end
+    protected :pathmap_explode
+
+    # Extract a partial path from the path.  Include +n+ directories from the
+    # front end (left hand side) if +n+ is positive.  Include |+n+|
+    # directories from the back end (right hand side) if +n+ is negative.
+    #
+    # This String extension comes from Rake
+    def pathmap_partial(n)
+      dirs = File.dirname(self).pathmap_explode
+      partial_dirs =
+        if n > 0
+          dirs[0...n]
+        elsif n < 0
+          dirs.reverse[0...-n].reverse
+        else
+          "."
+        end
+      File.join(partial_dirs)
+    end
+    protected :pathmap_partial
+
+    # Perform the pathmap replacement operations on the given path. The
+    # patterns take the form 'pat1,rep1;pat2,rep2...'.
+    #
+    # This String extension comes from Rake
+    def pathmap_replace(patterns, &block)
+      result = self
+      patterns.split(';').each do |pair|
+        pattern, replacement = pair.split(',')
+        pattern = Regexp.new(pattern)
+        if replacement == '*' && block_given?
+          result = result.sub(pattern, &block)
+        elsif replacement
+          result = result.sub(pattern, replacement)
+        else
+          result = result.sub(pattern, '')
+        end
+      end
+      result
+    end
+    protected :pathmap_replace
+
+    # Map the path according to the given specification.  The specification
+    # controls the details of the mapping.  The following special patterns are
+    # recognized:
+    #
+    # <tt>%p</tt> :: The complete path.
+    # <tt>%f</tt> :: The base file name of the path, with its file extension,
+    #                but without any directories.
+    # <tt>%n</tt> :: The file name of the path without its file extension.
+    # <tt>%d</tt> :: The directory list of the path.
+    # <tt>%x</tt> :: The file extension of the path.  An empty string if there
+    #                is no extension.
+    # <tt>%X</tt> :: Everything *but* the file extension.
+    # <tt>%s</tt> :: The alternate file separator if defined, otherwise use #
+    #                the standard file separator.
+    # <tt>%%</tt> :: A percent sign.
+    #
+    # The <tt>%d</tt> specifier can also have a numeric prefix (e.g. '%2d').
+    # If the number is positive, only return (up to) +n+ directories in the
+    # path, starting from the left hand side.  If +n+ is negative, return (up
+    # to) +n+ directories from the right hand side of the path.
+    #
+    # Examples:
+    #
+    #   'a/b/c/d/file.txt'.pathmap("%2d")   => 'a/b'
+    #   'a/b/c/d/file.txt'.pathmap("%-2d")  => 'c/d'
+    #
+    # Also the <tt>%d</tt>, <tt>%p</tt>, <tt>%f</tt>, <tt>%n</tt>,
+    # <tt>%x</tt>, and <tt>%X</tt> operators can take a pattern/replacement
+    # argument to perform simple string substitutions on a particular part of
+    # the path.  The pattern and replacement are separated by a comma and are
+    # enclosed by curly braces.  The replacement spec comes after the %
+    # character but before the operator letter.  (e.g. "%{old,new}d").
+    # Multiple replacement specs should be separated by semi-colons (e.g.
+    # "%{old,new;src,bin}d").
+    #
+    # Regular expressions may be used for the pattern, and back refs may be
+    # used in the replacement text.  Curly braces, commas and semi-colons are
+    # excluded from both the pattern and replacement text (let's keep parsing
+    # reasonable).
+    #
+    # For example:
+    #
+    #    "src/org/onestepback/proj/A.java".pathmap("%{^src,class}X.class")
+    #
+    # returns:
+    #
+    #    "class/org/onestepback/proj/A.class"
+    #
+    # If the replacement text is '*', then a block may be provided to perform
+    # some arbitrary calculation for the replacement.
+    #
+    # For example:
+    #
+    #   "/path/to/file.TXT".pathmap("%X%{.*,*}x") { |ext|
+    #      ext.downcase
+    #   }
+    #
+    # Returns:
+    #
+    #  "/path/to/file.txt"
+    #
+    # This String extension comes from Rake
+    def pathmap(spec=nil, &block)
+      return self if spec.nil?
+      result = ''
+      spec.scan(/%\{[^}]*\}-?\d*[sdpfnxX%]|%-?\d+d|%.|[^%]+/) do |frag|
+        case frag
+        when '%f'
+          result << File.basename(self)
+        when '%n'
+          result << File.basename(self).ext
+        when '%d'
+          result << File.dirname(self)
+        when '%x'
+          result << File.extname(self)
+        when '%X'
+          result << self.ext
+        when '%p'
+          result << self
+        when '%s'
+          result << (File::ALT_SEPARATOR || File::SEPARATOR)
+        when '%-'
+          # do nothing
+        when '%%'
+          result << "%"
+        when /%(-?\d+)d/
+          result << pathmap_partial($1.to_i)
+        when /^%\{([^}]*)\}(\d*[dpfnxX])/
+          patterns, operator = $1, $2
+          result << pathmap('%' + operator).pathmap_replace(patterns, &block)
+        when /^%/
+          fail ArgumentError, "Unknown pathmap specifier #{frag} in '#{spec}'"
+        else
+          result << frag
+        end
+      end
+      result
+    end
+  end
+
+end
diff --git a/ruby_2_2/lib/rake/ext/time.rb b/ruby_2_2/lib/rake/ext/time.rb
new file mode 100644
index 0000000000..d3b8cf9dc1
--- /dev/null
+++ b/ruby_2_2/lib/rake/ext/time.rb
@@ -0,0 +1,16 @@
+#--
+# Extensions to time to allow comparisons with early and late time classes.
+
+require 'rake/early_time'
+require 'rake/late_time'
+
+class Time # :nodoc: all
+  alias rake_original_time_compare :<=>
+  def <=>(other)
+    if Rake::EarlyTime === other || Rake::LateTime === other
+      - other.<=>(self)
+    else
+      rake_original_time_compare(other)
+    end
+  end
+end
diff --git a/ruby_2_2/lib/rake/file_creation_task.rb b/ruby_2_2/lib/rake/file_creation_task.rb
new file mode 100644
index 0000000000..c87e2192bb
--- /dev/null
+++ b/ruby_2_2/lib/rake/file_creation_task.rb
@@ -0,0 +1,24 @@
+require 'rake/file_task'
+require 'rake/early_time'
+
+module Rake
+
+  # A FileCreationTask is a file task that when used as a dependency will be
+  # needed if and only if the file has not been created.  Once created, it is
+  # not re-triggered if any of its dependencies are newer, nor does trigger
+  # any rebuilds of tasks that depend on it whenever it is updated.
+  #
+  class FileCreationTask < FileTask
+    # Is this file task needed?  Yes if it doesn't exist.
+    def needed?
+      ! File.exist?(name)
+    end
+
+    # Time stamp for file creation task.  This time stamp is earlier
+    # than any other time stamp.
+    def timestamp
+      Rake::EARLY
+    end
+  end
+
+end
diff --git a/ruby_2_2/lib/rake/file_list.rb b/ruby_2_2/lib/rake/file_list.rb
new file mode 100644
index 0000000000..006ec7703e
--- /dev/null
+++ b/ruby_2_2/lib/rake/file_list.rb
@@ -0,0 +1,428 @@
+require 'rake/cloneable'
+require 'rake/file_utils_ext'
+require 'rake/pathmap'
+
+
+module Rake
+
+  ##
+  # A FileList is essentially an array with a few helper methods defined to
+  # make file manipulation a bit easier.
+  #
+  # FileLists are lazy.  When given a list of glob patterns for possible files
+  # to be included in the file list, instead of searching the file structures
+  # to find the files, a FileList holds the pattern for latter use.
+  #
+  # This allows us to define a number of FileList to match any number of
+  # files, but only search out the actual files when then FileList itself is
+  # actually used.  The key is that the first time an element of the
+  # FileList/Array is requested, the pending patterns are resolved into a real
+  # list of file names.
+  #
+  class FileList
+
+    include Cloneable
+
+    # == Method Delegation
+    #
+    # The lazy evaluation magic of FileLists happens by implementing all the
+    # array specific methods to call +resolve+ before delegating the heavy
+    # lifting to an embedded array object (@items).
+    #
+    # In addition, there are two kinds of delegation calls.  The regular kind
+    # delegates to the @items array and returns the result directly.  Well,
+    # almost directly.  It checks if the returned value is the @items object
+    # itself, and if so will return the FileList object instead.
+    #
+    # The second kind of delegation call is used in methods that normally
+    # return a new Array object.  We want to capture the return value of these
+    # methods and wrap them in a new FileList object.  We enumerate these
+    # methods in the +SPECIAL_RETURN+ list below.
+
+    # List of array methods (that are not in +Object+) that need to be
+    # delegated.
+    ARRAY_METHODS = (Array.instance_methods - Object.instance_methods).
+      map { |n| n.to_s }
+
+    # List of additional methods that must be delegated.
+    MUST_DEFINE = %w[inspect <=>]
+
+    # List of methods that should not be delegated here (we define special
+    # versions of them explicitly below).
+    MUST_NOT_DEFINE = %w[to_a to_ary partition * <<]
+
+    # List of delegated methods that return new array values which need
+    # wrapping.
+    SPECIAL_RETURN = %w[
+      map collect sort sort_by select find_all reject grep
+      compact flatten uniq values_at
+      + - & |
+    ]
+
+    DELEGATING_METHODS = (ARRAY_METHODS + MUST_DEFINE - MUST_NOT_DEFINE).
+      map { |s| s.to_s }.sort.uniq
+
+    # Now do the delegation.
+    DELEGATING_METHODS.each do |sym|
+      if SPECIAL_RETURN.include?(sym)
+        ln = __LINE__ + 1
+        class_eval %{
+          def #{sym}(*args, &block)
+            resolve
+            result = @items.send(:#{sym}, *args, &block)
+            FileList.new.import(result)
+          end
+        }, __FILE__, ln
+      else
+        ln = __LINE__ + 1
+        class_eval %{
+          def #{sym}(*args, &block)
+            resolve
+            result = @items.send(:#{sym}, *args, &block)
+            result.object_id == @items.object_id ? self : result
+          end
+        }, __FILE__, ln
+      end
+    end
+
+    # Create a file list from the globbable patterns given.  If you wish to
+    # perform multiple includes or excludes at object build time, use the
+    # "yield self" pattern.
+    #
+    # Example:
+    #   file_list = FileList.new('lib/**/*.rb', 'test/test*.rb')
+    #
+    #   pkg_files = FileList.new('lib/**/*') do |fl|
+    #     fl.exclude(/\bCVS\b/)
+    #   end
+    #
+    def initialize(*patterns)
+      @pending_add = []
+      @pending = false
+      @exclude_patterns = DEFAULT_IGNORE_PATTERNS.dup
+      @exclude_procs = DEFAULT_IGNORE_PROCS.dup
+      @items = []
+      patterns.each { |pattern| include(pattern) }
+      yield self if block_given?
+    end
+
+    # Add file names defined by glob patterns to the file list.  If an array
+    # is given, add each element of the array.
+    #
+    # Example:
+    #   file_list.include("*.java", "*.cfg")
+    #   file_list.include %w( math.c lib.h *.o )
+    #
+    def include(*filenames)
+      # TODO: check for pending
+      filenames.each do |fn|
+        if fn.respond_to? :to_ary
+          include(*fn.to_ary)
+        else
+          @pending_add << Rake.from_pathname(fn)
+        end
+      end
+      @pending = true
+      self
+    end
+    alias :add :include
+
+    # Register a list of file name patterns that should be excluded from the
+    # list.  Patterns may be regular expressions, glob patterns or regular
+    # strings.  In addition, a block given to exclude will remove entries that
+    # return true when given to the block.
+    #
+    # Note that glob patterns are expanded against the file system. If a file
+    # is explicitly added to a file list, but does not exist in the file
+    # system, then an glob pattern in the exclude list will not exclude the
+    # file.
+    #
+    # Examples:
+    #   FileList['a.c', 'b.c'].exclude("a.c") => ['b.c']
+    #   FileList['a.c', 'b.c'].exclude(/^a/)  => ['b.c']
+    #
+    # If "a.c" is a file, then ...
+    #   FileList['a.c', 'b.c'].exclude("a.*") => ['b.c']
+    #
+    # If "a.c" is not a file, then ...
+    #   FileList['a.c', 'b.c'].exclude("a.*") => ['a.c', 'b.c']
+    #
+    def exclude(*patterns, &block)
+      patterns.each do |pat|
+        @exclude_patterns << Rake.from_pathname(pat)
+      end
+      @exclude_procs << block if block_given?
+      resolve_exclude unless @pending
+      self
+    end
+
+    # Clear all the exclude patterns so that we exclude nothing.
+    def clear_exclude
+      @exclude_patterns = []
+      @exclude_procs = []
+      self
+    end
+
+    # A FileList is equal through array equality.
+    def ==(array)
+      to_ary == array
+    end
+
+    # Return the internal array object.
+    def to_a
+      resolve
+      @items
+    end
+
+    # Return the internal array object.
+    def to_ary
+      to_a
+    end
+
+    # Lie about our class.
+    def is_a?(klass)
+      klass == Array || super(klass)
+    end
+    alias kind_of? is_a?
+
+    # Redefine * to return either a string or a new file list.
+    def *(other)
+      result = @items * other
+      case result
+      when Array
+        FileList.new.import(result)
+      else
+        result
+      end
+    end
+
+    def <<(obj)
+      resolve
+      @items << Rake.from_pathname(obj)
+      self
+    end
+
+    # Resolve all the pending adds now.
+    def resolve
+      if @pending
+        @pending = false
+        @pending_add.each do |fn| resolve_add(fn) end
+        @pending_add = []
+        resolve_exclude
+      end
+      self
+    end
+
+    def resolve_add(fn) # :nodoc:
+      case fn
+      when %r{[*?\[\{]}
+        add_matching(fn)
+      else
+        self << fn
+      end
+    end
+    private :resolve_add
+
+    def resolve_exclude # :nodoc:
+      reject! { |fn| excluded_from_list?(fn) }
+      self
+    end
+    private :resolve_exclude
+
+    # Return a new FileList with the results of running +sub+ against each
+    # element of the original list.
+    #
+    # Example:
+    #   FileList['a.c', 'b.c'].sub(/\.c$/, '.o')  => ['a.o', 'b.o']
+    #
+    def sub(pat, rep)
+      inject(FileList.new) { |res, fn| res << fn.sub(pat, rep) }
+    end
+
+    # Return a new FileList with the results of running +gsub+ against each
+    # element of the original list.
+    #
+    # Example:
+    #   FileList['lib/test/file', 'x/y'].gsub(/\//, "\\")
+    #      => ['lib\\test\\file', 'x\\y']
+    #
+    def gsub(pat, rep)
+      inject(FileList.new) { |res, fn| res << fn.gsub(pat, rep) }
+    end
+
+    # Same as +sub+ except that the original file list is modified.
+    def sub!(pat, rep)
+      each_with_index { |fn, i| self[i] = fn.sub(pat, rep) }
+      self
+    end
+
+    # Same as +gsub+ except that the original file list is modified.
+    def gsub!(pat, rep)
+      each_with_index { |fn, i| self[i] = fn.gsub(pat, rep) }
+      self
+    end
+
+    # Apply the pathmap spec to each of the included file names, returning a
+    # new file list with the modified paths.  (See String#pathmap for
+    # details.)
+    def pathmap(spec=nil)
+      collect { |fn| fn.pathmap(spec) }
+    end
+
+    # Return a new FileList with <tt>String#ext</tt> method applied to
+    # each member of the array.
+    #
+    # This method is a shortcut for:
+    #
+    #    array.collect { |item| item.ext(newext) }
+    #
+    # +ext+ is a user added method for the Array class.
+    def ext(newext='')
+      collect { |fn| fn.ext(newext) }
+    end
+
+    # Grep each of the files in the filelist using the given pattern. If a
+    # block is given, call the block on each matching line, passing the file
+    # name, line number, and the matching line of text.  If no block is given,
+    # a standard emacs style file:linenumber:line message will be printed to
+    # standard out.  Returns the number of matched items.
+    def egrep(pattern, *options)
+      matched = 0
+      each do |fn|
+        begin
+          open(fn, "r", *options) do |inf|
+            count = 0
+            inf.each do |line|
+              count += 1
+              if pattern.match(line)
+                matched += 1
+                if block_given?
+                  yield fn, count, line
+                else
+                  puts "#{fn}:#{count}:#{line}"
+                end
+              end
+            end
+          end
+        rescue StandardError => ex
+          $stderr.puts "Error while processing '#{fn}': #{ex}"
+        end
+      end
+      matched
+    end
+
+    # Return a new file list that only contains file names from the current
+    # file list that exist on the file system.
+    def existing
+      select { |fn| File.exist?(fn) }
+    end
+
+    # Modify the current file list so that it contains only file name that
+    # exist on the file system.
+    def existing!
+      resolve
+      @items = @items.select { |fn| File.exist?(fn) }
+      self
+    end
+
+    # FileList version of partition.  Needed because the nested arrays should
+    # be FileLists in this version.
+    def partition(&block)       # :nodoc:
+      resolve
+      result = @items.partition(&block)
+      [
+        FileList.new.import(result[0]),
+        FileList.new.import(result[1]),
+      ]
+    end
+
+    # Convert a FileList to a string by joining all elements with a space.
+    def to_s
+      resolve
+      self.join(' ')
+    end
+
+    # Add matching glob patterns.
+    def add_matching(pattern)
+      FileList.glob(pattern).each do |fn|
+        self << fn unless excluded_from_list?(fn)
+      end
+    end
+    private :add_matching
+
+    # Should the given file name be excluded from the list?
+    #
+    # NOTE: This method was formerly named "exclude?", but Rails
+    # introduced an exclude? method as an array method and setup a
+    # conflict with file list. We renamed the method to avoid
+    # confusion. If you were using "FileList#exclude?" in your user
+    # code, you will need to update.
+    def excluded_from_list?(fn)
+      return true if @exclude_patterns.any? do |pat|
+        case pat
+        when Regexp
+          fn =~ pat
+        when /[*?]/
+          File.fnmatch?(pat, fn, File::FNM_PATHNAME)
+        else
+          fn == pat
+        end
+      end
+      @exclude_procs.any? { |p| p.call(fn) }
+    end
+
+    DEFAULT_IGNORE_PATTERNS = [
+      /(^|[\/\\])CVS([\/\\]|$)/,
+      /(^|[\/\\])\.svn([\/\\]|$)/,
+      /\.bak$/,
+      /~$/
+    ]
+    DEFAULT_IGNORE_PROCS = [
+      proc { |fn| fn =~ /(^|[\/\\])core$/ && ! File.directory?(fn) }
+    ]
+
+    def import(array) # :nodoc:
+      @items = array
+      self
+    end
+
+    class << self
+      # Create a new file list including the files listed. Similar to:
+      #
+      #   FileList.new(*args)
+      def [](*args)
+        new(*args)
+      end
+
+      # Get a sorted list of files matching the pattern. This method
+      # should be preferred to Dir[pattern] and Dir.glob(pattern) because
+      # the files returned are guaranteed to be sorted.
+      def glob(pattern, *args)
+        Dir.glob(pattern, *args).sort
+      end
+    end
+  end
+end
+
+module Rake
+  class << self
+
+    # Yield each file or directory component.
+    def each_dir_parent(dir)    # :nodoc:
+      old_length = nil
+      while dir != '.' && dir.length != old_length
+        yield(dir)
+        old_length = dir.length
+        dir = File.dirname(dir)
+      end
+    end
+
+    # Convert Pathname and Pathname-like objects to strings;
+    # leave everything else alone
+    def from_pathname(path)    # :nodoc:
+      path = path.to_path if path.respond_to?(:to_path)
+      path = path.to_str if path.respond_to?(:to_str)
+      path
+    end
+  end
+end # module Rake
diff --git a/ruby_2_2/lib/rake/file_task.rb b/ruby_2_2/lib/rake/file_task.rb
new file mode 100644
index 0000000000..4c9b04074f
--- /dev/null
+++ b/ruby_2_2/lib/rake/file_task.rb
@@ -0,0 +1,46 @@
+require 'rake/task.rb'
+require 'rake/early_time'
+
+module Rake
+
+  # A FileTask is a task that includes time based dependencies.  If any of a
+  # FileTask's prerequisites have a timestamp that is later than the file
+  # represented by this task, then the file must be rebuilt (using the
+  # supplied actions).
+  #
+  class FileTask < Task
+
+    # Is this file task needed?  Yes if it doesn't exist, or if its time stamp
+    # is out of date.
+    def needed?
+      ! File.exist?(name) || out_of_date?(timestamp) || @application.options.build_all
+    end
+
+    # Time stamp for file task.
+    def timestamp
+      if File.exist?(name)
+        File.mtime(name.to_s)
+      else
+        Rake::LATE
+      end
+    end
+
+    private
+
+    # Are there any prerequisites with a later time than the given time stamp?
+    def out_of_date?(stamp)
+      @prerequisites.any? { |n| application[n, @scope].timestamp > stamp }
+    end
+
+    # ----------------------------------------------------------------
+    # Task class methods.
+    #
+    class << self
+      # Apply the scope to the task name according to the rules for this kind
+      # of task.  File based tasks ignore the scope when creating the name.
+      def scope_name(scope, task_name)
+        Rake.from_pathname(task_name)
+      end
+    end
+  end
+end
diff --git a/ruby_2_2/lib/rake/file_utils.rb b/ruby_2_2/lib/rake/file_utils.rb
new file mode 100644
index 0000000000..27f4e2e1d1
--- /dev/null
+++ b/ruby_2_2/lib/rake/file_utils.rb
@@ -0,0 +1,128 @@
+require 'rbconfig'
+require 'fileutils'
+
+#--
+# This a FileUtils extension that defines several additional commands to be
+# added to the FileUtils utility functions.
+module FileUtils
+  # Path to the currently running Ruby program
+  RUBY = ENV['RUBY'] || File.join(
+    RbConfig::CONFIG['bindir'],
+    RbConfig::CONFIG['ruby_install_name'] + RbConfig::CONFIG['EXEEXT']).
+    sub(/.*\s.*/m, '"\&"')
+
+  OPT_TABLE['sh']  = %w(noop verbose)
+  OPT_TABLE['ruby'] = %w(noop verbose)
+
+  # Run the system command +cmd+.  If multiple arguments are given the command
+  # is run directly (without the shell, same semantics as Kernel::exec and
+  # Kernel::system).
+  #
+  # It is recommended you use the multiple argument form over interpolating
+  # user input for both usability and security reasons.  With the multiple
+  # argument form you can easily process files with spaces or other shell
+  # reserved characters in them.  With the multiple argument form your rake
+  # tasks are not vulnerable to users providing an argument like
+  # <code>; rm # -rf /</code>.
+  #
+  # If a block is given, upon command completion the block is called with an
+  # OK flag (true on a zero exit status) and a Process::Status object.
+  # Without a block a RuntimeError is raised when the command exits non-zero.
+  #
+  # Examples:
+  #
+  #   sh 'ls -ltr'
+  #
+  #   sh 'ls', 'file with spaces'
+  #
+  #   # check exit status after command runs
+  #   sh %{grep pattern file} do |ok, res|
+  #     if ! ok
+  #       puts "pattern not found (status = #{res.exitstatus})"
+  #     end
+  #   end
+  #
+  def sh(*cmd, &block)
+    options = (Hash === cmd.last) ? cmd.pop : {}
+    shell_runner = block_given? ? block : create_shell_runner(cmd)
+    set_verbose_option(options)
+    options[:noop] ||= Rake::FileUtilsExt.nowrite_flag
+    Rake.rake_check_options options, :noop, :verbose
+    Rake.rake_output_message cmd.join(" ") if options[:verbose]
+
+    unless options[:noop]
+      res = rake_system(*cmd)
+      status = $?
+      status = Rake::PseudoStatus.new(1) if !res && status.nil?
+      shell_runner.call(res, status)
+    end
+  end
+
+  def create_shell_runner(cmd) # :nodoc:
+    show_command = cmd.join(" ")
+    show_command = show_command[0, 42] + "..." unless $trace
+    lambda do |ok, status|
+      ok or
+        fail "Command failed with status (#{status.exitstatus}): " +
+        "[#{show_command}]"
+    end
+  end
+  private :create_shell_runner
+
+  def set_verbose_option(options) # :nodoc:
+    unless options.key? :verbose
+      options[:verbose] =
+        (Rake::FileUtilsExt.verbose_flag == Rake::FileUtilsExt::DEFAULT) ||
+        Rake::FileUtilsExt.verbose_flag
+    end
+  end
+  private :set_verbose_option
+
+  def rake_system(*cmd) # :nodoc:
+    Rake::AltSystem.system(*cmd)
+  end
+  private :rake_system
+
+  # Run a Ruby interpreter with the given arguments.
+  #
+  # Example:
+  #   ruby %{-pe '$_.upcase!' <README}
+  #
+  def ruby(*args, &block)
+    options = (Hash === args.last) ? args.pop : {}
+    if args.length > 1
+      sh(*([RUBY] + args + [options]), &block)
+    else
+      sh("#{RUBY} #{args.first}", options, &block)
+    end
+  end
+
+  LN_SUPPORTED = [true]
+
+  #  Attempt to do a normal file link, but fall back to a copy if the link
+  #  fails.
+  def safe_ln(*args)
+    if ! LN_SUPPORTED[0]
+      cp(*args)
+    else
+      begin
+        ln(*args)
+      rescue StandardError, NotImplementedError
+        LN_SUPPORTED[0] = false
+        cp(*args)
+      end
+    end
+  end
+
+  # Split a file path into individual directory names.
+  #
+  # Example:
+  #   split_all("a/b/c") =>  ['a', 'b', 'c']
+  #
+  def split_all(path)
+    head, tail = File.split(path)
+    return [tail] if head == '.' || tail == '/'
+    return [head, tail] if head == '/'
+    return split_all(head) + [tail]
+  end
+end
diff --git a/ruby_2_2/lib/rake/file_utils_ext.rb b/ruby_2_2/lib/rake/file_utils_ext.rb
new file mode 100644
index 0000000000..309159aec1
--- /dev/null
+++ b/ruby_2_2/lib/rake/file_utils_ext.rb
@@ -0,0 +1,144 @@
+require 'rake/file_utils'
+
+module Rake
+  #
+  # FileUtilsExt provides a custom version of the FileUtils methods
+  # that respond to the <tt>verbose</tt> and <tt>nowrite</tt>
+  # commands.
+  #
+  module FileUtilsExt
+    include FileUtils
+
+    class << self
+      attr_accessor :verbose_flag, :nowrite_flag
+    end
+
+    DEFAULT = Object.new
+
+    FileUtilsExt.verbose_flag = DEFAULT
+    FileUtilsExt.nowrite_flag = false
+
+    FileUtils.commands.each do |name|
+      opts = FileUtils.options_of name
+      default_options = []
+      if opts.include?("verbose")
+        default_options << ':verbose => FileUtilsExt.verbose_flag'
+      end
+      if opts.include?("noop")
+        default_options << ':noop => FileUtilsExt.nowrite_flag'
+      end
+
+      next if default_options.empty?
+      module_eval(<<-EOS, __FILE__, __LINE__ + 1)
+      def #{name}( *args, &block )
+        super(
+          *rake_merge_option(args,
+            #{default_options.join(', ')}
+            ), &block)
+      end
+      EOS
+    end
+
+    # Get/set the verbose flag controlling output from the FileUtils
+    # utilities.  If verbose is true, then the utility method is
+    # echoed to standard output.
+    #
+    # Examples:
+    #    verbose              # return the current value of the
+    #                         # verbose flag
+    #    verbose(v)           # set the verbose flag to _v_.
+    #    verbose(v) { code }  # Execute code with the verbose flag set
+    #                         # temporarily to _v_.  Return to the
+    #                         # original value when code is done.
+    def verbose(value=nil)
+      oldvalue = FileUtilsExt.verbose_flag
+      FileUtilsExt.verbose_flag = value unless value.nil?
+      if block_given?
+        begin
+          yield
+        ensure
+          FileUtilsExt.verbose_flag = oldvalue
+        end
+      end
+      FileUtilsExt.verbose_flag
+    end
+
+    # Get/set the nowrite flag controlling output from the FileUtils
+    # utilities.  If verbose is true, then the utility method is
+    # echoed to standard output.
+    #
+    # Examples:
+    #    nowrite              # return the current value of the
+    #                         # nowrite flag
+    #    nowrite(v)           # set the nowrite flag to _v_.
+    #    nowrite(v) { code }  # Execute code with the nowrite flag set
+    #                         # temporarily to _v_. Return to the
+    #                         # original value when code is done.
+    def nowrite(value=nil)
+      oldvalue = FileUtilsExt.nowrite_flag
+      FileUtilsExt.nowrite_flag = value unless value.nil?
+      if block_given?
+        begin
+          yield
+        ensure
+          FileUtilsExt.nowrite_flag = oldvalue
+        end
+      end
+      oldvalue
+    end
+
+    # Use this function to prevent potentially destructive ruby code
+    # from running when the :nowrite flag is set.
+    #
+    # Example:
+    #
+    #   when_writing("Building Project") do
+    #     project.build
+    #   end
+    #
+    # The following code will build the project under normal
+    # conditions. If the nowrite(true) flag is set, then the example
+    # will print:
+    #
+    #      DRYRUN: Building Project
+    #
+    # instead of actually building the project.
+    #
+    def when_writing(msg=nil)
+      if FileUtilsExt.nowrite_flag
+        $stderr.puts "DRYRUN: #{msg}" if msg
+      else
+        yield
+      end
+    end
+
+    # Merge the given options with the default values.
+    def rake_merge_option(args, defaults)
+      if Hash === args.last
+        defaults.update(args.last)
+        args.pop
+      end
+      args.push defaults
+      args
+    end
+
+    # Send the message to the default rake output (which is $stderr).
+    def rake_output_message(message)
+      $stderr.puts(message)
+    end
+
+    # Check that the options do not contain options not listed in
+    # +optdecl+.  An ArgumentError exception is thrown if non-declared
+    # options are found.
+    def rake_check_options(options, *optdecl)
+      h = options.dup
+      optdecl.each do |name|
+        h.delete name
+      end
+      raise ArgumentError, "no such option: #{h.keys.join(' ')}" unless
+        h.empty?
+    end
+
+    extend self
+  end
+end
diff --git a/ruby_2_2/lib/rake/gempackagetask.rb b/ruby_2_2/lib/rake/gempackagetask.rb
new file mode 100644
index 0000000000..16e7ce042b
--- /dev/null
+++ b/ruby_2_2/lib/rake/gempackagetask.rb
@@ -0,0 +1,4 @@
+# TODO: Remove in Rake 11
+
+fail "ERROR: 'rake/gempackagetask' is obsolete and no longer supported. " +
+  "Use 'rubygems/package_task' instead."
diff --git a/ruby_2_2/lib/rake/invocation_chain.rb b/ruby_2_2/lib/rake/invocation_chain.rb
new file mode 100644
index 0000000000..540628957c
--- /dev/null
+++ b/ruby_2_2/lib/rake/invocation_chain.rb
@@ -0,0 +1,56 @@
+module Rake
+
+  # InvocationChain tracks the chain of task invocations to detect
+  # circular dependencies.
+  class InvocationChain < LinkedList
+
+    # Is the invocation already in the chain?
+    def member?(invocation)
+      head == invocation || tail.member?(invocation)
+    end
+
+    # Append an invocation to the chain of invocations. It is an error
+    # if the invocation already listed.
+    def append(invocation)
+      if member?(invocation)
+        fail RuntimeError, "Circular dependency detected: #{to_s} => #{invocation}"
+      end
+      conj(invocation)
+    end
+
+    # Convert to string, ie: TOP => invocation => invocation
+    def to_s
+      "#{prefix}#{head}"
+    end
+
+    # Class level append.
+    def self.append(invocation, chain)
+      chain.append(invocation)
+    end
+
+    private
+
+    def prefix
+      "#{tail} => "
+    end
+
+    # Null object for an empty chain.
+    class EmptyInvocationChain < LinkedList::EmptyLinkedList
+      @parent = InvocationChain
+
+      def member?(obj)
+        false
+      end
+
+      def append(invocation)
+        conj(invocation)
+      end
+
+      def to_s
+        "TOP"
+      end
+    end
+
+    EMPTY = EmptyInvocationChain.new
+  end
+end
diff --git a/ruby_2_2/lib/rake/invocation_exception_mixin.rb b/ruby_2_2/lib/rake/invocation_exception_mixin.rb
new file mode 100644
index 0000000000..84ff3353ba
--- /dev/null
+++ b/ruby_2_2/lib/rake/invocation_exception_mixin.rb
@@ -0,0 +1,16 @@
+module Rake
+  module InvocationExceptionMixin
+    # Return the invocation chain (list of Rake tasks) that were in
+    # effect when this exception was detected by rake.  May be null if
+    # no tasks were active.
+    def chain
+      @rake_invocation_chain ||= nil
+    end
+
+    # Set the invocation chain in effect when this exception was
+    # detected.
+    def chain=(value)
+      @rake_invocation_chain = value
+    end
+  end
+end
diff --git a/ruby_2_2/lib/rake/late_time.rb b/ruby_2_2/lib/rake/late_time.rb
new file mode 100644
index 0000000000..d959a7821f
--- /dev/null
+++ b/ruby_2_2/lib/rake/late_time.rb
@@ -0,0 +1,17 @@
+module Rake
+  # LateTime is a fake timestamp that occurs _after_ any other time value.
+  class LateTime
+    include Comparable
+    include Singleton
+
+    def <=>(other)
+      1
+    end
+
+    def to_s
+      '<LATE TIME>'
+    end
+  end
+
+  LATE = LateTime.instance
+end
diff --git a/ruby_2_2/lib/rake/linked_list.rb b/ruby_2_2/lib/rake/linked_list.rb
new file mode 100644
index 0000000000..b5ab797808
--- /dev/null
+++ b/ruby_2_2/lib/rake/linked_list.rb
@@ -0,0 +1,103 @@
+module Rake
+
+  # Polylithic linked list structure used to implement several data
+  # structures in Rake.
+  class LinkedList
+    include Enumerable
+
+    attr_reader :head, :tail
+
+    def initialize(head, tail=EMPTY)
+      @head = head
+      @tail = tail
+    end
+
+    # Polymorphically add a new element to the head of a list. The
+    # type of head node will be the same list type as the tail.
+    def conj(item)
+      self.class.cons(item, self)
+    end
+
+    # Is the list empty?
+    def empty?
+      false
+    end
+
+    # Lists are structurally equivalent.
+    def ==(other)
+      current = self
+      while ! current.empty? && ! other.empty?
+        return false if current.head != other.head
+        current = current.tail
+        other = other.tail
+      end
+      current.empty? && other.empty?
+    end
+
+    # Convert to string: LL(item, item...)
+    def to_s
+      items = map { |item| item.to_s }.join(", ")
+      "LL(#{items})"
+    end
+
+    # Same as +to_s+, but with inspected items.
+    def inspect
+      items = map { |item| item.inspect }.join(", ")
+      "LL(#{items})"
+    end
+
+    # For each item in the list.
+    def each
+      current = self
+      while ! current.empty?
+        yield(current.head)
+        current = current.tail
+      end
+      self
+    end
+
+    # Make a list out of the given arguments. This method is
+    # polymorphic
+    def self.make(*args)
+      result = empty
+      args.reverse_each do |item|
+        result = cons(item, result)
+      end
+      result
+    end
+
+    # Cons a new head onto the tail list.
+    def self.cons(head, tail)
+      new(head, tail)
+    end
+
+    # The standard empty list class for the given LinkedList class.
+    def self.empty
+      self::EMPTY
+    end
+
+    # Represent an empty list, using the Null Object Pattern.
+    #
+    # When inheriting from the LinkedList class, you should implement
+    # a type specific Empty class as well. Make sure you set the class
+    # instance variable @parent to the associated list class (this
+    # allows conj, cons and make to work polymorphically).
+    class EmptyLinkedList < LinkedList
+      @parent = LinkedList
+
+      def initialize
+      end
+
+      def empty?
+        true
+      end
+
+      def self.cons(head, tail)
+        @parent.cons(head, tail)
+      end
+    end
+
+    EMPTY = EmptyLinkedList.new
+  end
+
+end
diff --git a/ruby_2_2/lib/rake/loaders/makefile.rb b/ruby_2_2/lib/rake/loaders/makefile.rb
new file mode 100644
index 0000000000..4ece4323af
--- /dev/null
+++ b/ruby_2_2/lib/rake/loaders/makefile.rb
@@ -0,0 +1,40 @@
+module Rake
+
+  # Makefile loader to be used with the import file loader.
+  class MakefileLoader
+    include Rake::DSL
+
+    SPACE_MARK = "\0"
+
+    # Load the makefile dependencies in +fn+.
+    def load(fn)
+      lines = File.read fn
+      lines.gsub!(/\\ /, SPACE_MARK)
+      lines.gsub!(/#[^\n]*\n/m, "")
+      lines.gsub!(/\\\n/, ' ')
+      lines.each_line do |line|
+        process_line(line)
+      end
+    end
+
+    private
+
+    # Process one logical line of makefile data.
+    def process_line(line)
+      file_tasks, args = line.split(':', 2)
+      return if args.nil?
+      dependents = args.split.map { |d| respace(d) }
+      file_tasks.scan(/\S+/) do |file_task|
+        file_task = respace(file_task)
+        file file_task => dependents
+      end
+    end
+
+    def respace(str)
+      str.tr SPACE_MARK, ' '
+    end
+  end
+
+  # Install the handler
+  Rake.application.add_loader('mf', MakefileLoader.new)
+end
diff --git a/ruby_2_2/lib/rake/multi_task.rb b/ruby_2_2/lib/rake/multi_task.rb
new file mode 100644
index 0000000000..5418a7a7b0
--- /dev/null
+++ b/ruby_2_2/lib/rake/multi_task.rb
@@ -0,0 +1,13 @@
+module Rake
+
+  # Same as a regular task, but the immediate prerequisites are done in
+  # parallel using Ruby threads.
+  #
+  class MultiTask < Task
+    private
+    def invoke_prerequisites(task_args, invocation_chain) # :nodoc:
+      invoke_prerequisites_concurrently(task_args, invocation_chain)
+    end
+  end
+
+end
diff --git a/ruby_2_2/lib/rake/name_space.rb b/ruby_2_2/lib/rake/name_space.rb
new file mode 100644
index 0000000000..58f911e434
--- /dev/null
+++ b/ruby_2_2/lib/rake/name_space.rb
@@ -0,0 +1,38 @@
+##
+# The NameSpace class will lookup task names in the scope defined by a
+# +namespace+ command.
+
+class Rake::NameSpace
+
+  ##
+  # Create a namespace lookup object using the given task manager
+  # and the list of scopes.
+
+  def initialize(task_manager, scope_list)
+    @task_manager = task_manager
+    @scope = scope_list.dup
+  end
+
+  ##
+  # Lookup a task named +name+ in the namespace.
+
+  def [](name)
+    @task_manager.lookup(name, @scope)
+  end
+
+  ##
+  # The scope of the namespace (a LinkedList)
+
+  def scope
+    @scope.dup
+  end
+
+  ##
+  # Return the list of tasks defined in this and nested namespaces.
+
+  def tasks
+    @task_manager.tasks_in_scope(@scope)
+  end
+
+end
+
diff --git a/ruby_2_2/lib/rake/packagetask.rb b/ruby_2_2/lib/rake/packagetask.rb
new file mode 100644
index 0000000000..249ee72b11
--- /dev/null
+++ b/ruby_2_2/lib/rake/packagetask.rb
@@ -0,0 +1,199 @@
+# Define a package task library to aid in the definition of
+# redistributable package files.
+
+require 'rake'
+require 'rake/tasklib'
+
+module Rake
+
+  # Create a packaging task that will package the project into
+  # distributable files (e.g zip archive or tar files).
+  #
+  # The PackageTask will create the following targets:
+  #
+  # +:package+ ::
+  #   Create all the requested package files.
+  #
+  # +:clobber_package+ ::
+  #   Delete all the package files.  This target is automatically
+  #   added to the main clobber target.
+  #
+  # +:repackage+ ::
+  #   Rebuild the package files from scratch, even if they are not out
+  #   of date.
+  #
+  # <tt>"<em>package_dir</em>/<em>name</em>-<em>version</em>.tgz"</tt> ::
+  #   Create a gzipped tar package (if <em>need_tar</em> is true).
+  #
+  # <tt>"<em>package_dir</em>/<em>name</em>-<em>version</em>.tar.gz"</tt> ::
+  #   Create a gzipped tar package (if <em>need_tar_gz</em> is true).
+  #
+  # <tt>"<em>package_dir</em>/<em>name</em>-<em>version</em>.tar.bz2"</tt> ::
+  #   Create a bzip2'd tar package (if <em>need_tar_bz2</em> is true).
+  #
+  # <tt>"<em>package_dir</em>/<em>name</em>-<em>version</em>.zip"</tt> ::
+  #   Create a zip package archive (if <em>need_zip</em> is true).
+  #
+  # Example:
+  #
+  #   Rake::PackageTask.new("rake", "1.2.3") do |p|
+  #     p.need_tar = true
+  #     p.package_files.include("lib/**/*.rb")
+  #   end
+  #
+  class PackageTask < TaskLib
+    # Name of the package (from the GEM Spec).
+    attr_accessor :name
+
+    # Version of the package (e.g. '1.3.2').
+    attr_accessor :version
+
+    # Directory used to store the package files (default is 'pkg').
+    attr_accessor :package_dir
+
+    # True if a gzipped tar file (tgz) should be produced (default is
+    # false).
+    attr_accessor :need_tar
+
+    # True if a gzipped tar file (tar.gz) should be produced (default
+    # is false).
+    attr_accessor :need_tar_gz
+
+    # True if a bzip2'd tar file (tar.bz2) should be produced (default
+    # is false).
+    attr_accessor :need_tar_bz2
+
+    # True if a zip file should be produced (default is false)
+    attr_accessor :need_zip
+
+    # List of files to be included in the package.
+    attr_accessor :package_files
+
+    # Tar command for gzipped or bzip2ed archives.  The default is 'tar'.
+    attr_accessor :tar_command
+
+    # Zip command for zipped archives.  The default is 'zip'.
+    attr_accessor :zip_command
+
+    # Create a Package Task with the given name and version.  Use +:noversion+
+    # as the version to build a package without a version or to provide a
+    # fully-versioned package name.
+
+    def initialize(name=nil, version=nil)
+      init(name, version)
+      yield self if block_given?
+      define unless name.nil?
+    end
+
+    # Initialization that bypasses the "yield self" and "define" step.
+    def init(name, version)
+      @name = name
+      @version = version
+      @package_files = Rake::FileList.new
+      @package_dir = 'pkg'
+      @need_tar = false
+      @need_tar_gz = false
+      @need_tar_bz2 = false
+      @need_zip = false
+      @tar_command = 'tar'
+      @zip_command = 'zip'
+    end
+
+    # Create the tasks defined by this task library.
+    def define
+      fail "Version required (or :noversion)" if @version.nil?
+      @version = nil if :noversion == @version
+
+      desc "Build all the packages"
+      task :package
+
+      desc "Force a rebuild of the package files"
+      task :repackage => [:clobber_package, :package]
+
+      desc "Remove package products"
+      task :clobber_package do
+        rm_r package_dir rescue nil
+      end
+
+      task :clobber => [:clobber_package]
+
+      [
+        [need_tar, tgz_file, "z"],
+        [need_tar_gz, tar_gz_file, "z"],
+        [need_tar_bz2, tar_bz2_file, "j"]
+      ].each do |(need, file, flag)|
+        if need
+          task :package => ["#{package_dir}/#{file}"]
+          file "#{package_dir}/#{file}" =>
+            [package_dir_path] + package_files do
+            chdir(package_dir) do
+              sh @tar_command, "#{flag}cvf", file, package_name
+            end
+          end
+        end
+      end
+
+      if need_zip
+        task :package => ["#{package_dir}/#{zip_file}"]
+        file "#{package_dir}/#{zip_file}" =>
+          [package_dir_path] + package_files do
+          chdir(package_dir) do
+            sh @zip_command, "-r", zip_file, package_name
+          end
+        end
+      end
+
+      directory package_dir_path => @package_files do
+        @package_files.each do |fn|
+          f = File.join(package_dir_path, fn)
+          fdir = File.dirname(f)
+          mkdir_p(fdir) unless File.exist?(fdir)
+          if File.directory?(fn)
+            mkdir_p(f)
+          else
+            rm_f f
+            safe_ln(fn, f)
+          end
+        end
+      end
+      self
+    end
+
+    # The name of this package
+
+    def package_name
+      @version ? "#{@name}-#{@version}" : @name
+    end
+
+    # The directory this package will be built in
+
+    def package_dir_path
+      "#{package_dir}/#{package_name}"
+    end
+
+    # The package name with .tgz added
+
+    def tgz_file
+      "#{package_name}.tgz"
+    end
+
+    # The package name with .tar.gz added
+
+    def tar_gz_file
+      "#{package_name}.tar.gz"
+    end
+
+    # The package name with .tar.bz2 added
+
+    def tar_bz2_file
+      "#{package_name}.tar.bz2"
+    end
+
+    # The package name with .zip added
+
+    def zip_file
+      "#{package_name}.zip"
+    end
+  end
+
+end
diff --git a/ruby_2_2/lib/rake/pathmap.rb b/ruby_2_2/lib/rake/pathmap.rb
new file mode 100644
index 0000000000..9a840cda29
--- /dev/null
+++ b/ruby_2_2/lib/rake/pathmap.rb
@@ -0,0 +1,3 @@
+# TODO: Remove in Rake 11
+
+require 'rake/ext/string'
diff --git a/ruby_2_2/lib/rake/phony.rb b/ruby_2_2/lib/rake/phony.rb
new file mode 100644
index 0000000000..29633ae066
--- /dev/null
+++ b/ruby_2_2/lib/rake/phony.rb
@@ -0,0 +1,15 @@
+# Defines a :phony task that you can use as a dependency. This allows
+# file-based tasks to use non-file-based tasks as prerequisites
+# without forcing them to rebuild.
+#
+# See FileTask#out_of_date? and Task#timestamp for more info.
+
+require 'rake'
+
+task :phony
+
+Rake::Task[:phony].tap do |task|
+  def task.timestamp # :nodoc:
+    Time.at 0
+  end
+end
diff --git a/ruby_2_2/lib/rake/private_reader.rb b/ruby_2_2/lib/rake/private_reader.rb
new file mode 100644
index 0000000000..1620978576
--- /dev/null
+++ b/ruby_2_2/lib/rake/private_reader.rb
@@ -0,0 +1,20 @@
+module Rake
+
+  # Include PrivateReader to use +private_reader+.
+  module PrivateReader           # :nodoc: all
+
+    def self.included(base)
+      base.extend(ClassMethods)
+    end
+
+    module ClassMethods
+
+      # Declare a list of private accessors
+      def private_reader(*names)
+        attr_reader(*names)
+        private(*names)
+      end
+    end
+
+  end
+end
diff --git a/ruby_2_2/lib/rake/promise.rb b/ruby_2_2/lib/rake/promise.rb
new file mode 100644
index 0000000000..31c4563476
--- /dev/null
+++ b/ruby_2_2/lib/rake/promise.rb
@@ -0,0 +1,99 @@
+module Rake
+
+  # A Promise object represents a promise to do work (a chore) in the
+  # future. The promise is created with a block and a list of
+  # arguments for the block. Calling value will return the value of
+  # the promised chore.
+  #
+  # Used by ThreadPool.
+  #
+  class Promise               # :nodoc: all
+    NOT_SET = Object.new.freeze # :nodoc:
+
+    attr_accessor :recorder
+
+    # Create a promise to do the chore specified by the block.
+    def initialize(args, &block)
+      @mutex = Mutex.new
+      @result = NOT_SET
+      @error = NOT_SET
+      @args = args
+      @block = block
+    end
+
+    # Return the value of this promise.
+    #
+    # If the promised chore is not yet complete, then do the work
+    # synchronously. We will wait.
+    def value
+      unless complete?
+        stat :sleeping_on, :item_id => object_id
+        @mutex.synchronize do
+          stat :has_lock_on, :item_id => object_id
+          chore
+          stat :releasing_lock_on, :item_id => object_id
+        end
+      end
+      error? ? raise(@error) : @result
+    end
+
+    # If no one else is working this promise, go ahead and do the chore.
+    def work
+      stat :attempting_lock_on, :item_id => object_id
+      if @mutex.try_lock
+        stat :has_lock_on, :item_id => object_id
+        chore
+        stat :releasing_lock_on, :item_id => object_id
+        @mutex.unlock
+      else
+        stat :bailed_on, :item_id => object_id
+      end
+    end
+
+    private
+
+    # Perform the chore promised
+    def chore
+      if complete?
+        stat :found_completed, :item_id => object_id
+        return
+      end
+      stat :will_execute, :item_id => object_id
+      begin
+        @result = @block.call(*@args)
+      rescue Exception => e
+        @error = e
+      end
+      stat :did_execute, :item_id => object_id
+      discard
+    end
+
+    # Do we have a result for the promise
+    def result?
+      ! @result.equal?(NOT_SET)
+    end
+
+    # Did the promise throw an error
+    def error?
+      ! @error.equal?(NOT_SET)
+    end
+
+    # Are we done with the promise
+    def complete?
+      result? || error?
+    end
+
+    # free up these items for the GC
+    def discard
+      @args = nil
+      @block = nil
+    end
+
+    # Record execution statistics if there is a recorder
+    def stat(*args)
+      @recorder.call(*args) if @recorder
+    end
+
+  end
+
+end
diff --git a/ruby_2_2/lib/rake/pseudo_status.rb b/ruby_2_2/lib/rake/pseudo_status.rb
new file mode 100644
index 0000000000..16e1903bd6
--- /dev/null
+++ b/ruby_2_2/lib/rake/pseudo_status.rb
@@ -0,0 +1,29 @@
+module Rake
+
+  ##
+  # Exit status class for times the system just gives us a nil.
+  class PseudoStatus # :nodoc: all
+    attr_reader :exitstatus
+
+    def initialize(code=0)
+      @exitstatus = code
+    end
+
+    def to_i
+      @exitstatus << 8
+    end
+
+    def >>(n)
+      to_i >> n
+    end
+
+    def stopped?
+      false
+    end
+
+    def exited?
+      true
+    end
+  end
+
+end
diff --git a/ruby_2_2/lib/rake/rake_module.rb b/ruby_2_2/lib/rake/rake_module.rb
new file mode 100644
index 0000000000..3692753434
--- /dev/null
+++ b/ruby_2_2/lib/rake/rake_module.rb
@@ -0,0 +1,38 @@
+require 'rake/application'
+
+module Rake
+
+  class << self
+    # Current Rake Application
+    def application
+      @application ||= Rake::Application.new
+    end
+
+    # Set the current Rake application object.
+    def application=(app)
+      @application = app
+    end
+
+    def suggested_thread_count # :nodoc:
+      @cpu_count ||= Rake::CpuCounter.count
+      @cpu_count + 4
+    end
+
+    # Return the original directory where the Rake application was started.
+    def original_dir
+      application.original_dir
+    end
+
+    # Load a rakefile.
+    def load_rakefile(path)
+      load(path)
+    end
+
+    # Add files to the rakelib list
+    def add_rakelib(*files)
+      application.options.rakelib ||= []
+      application.options.rakelib.concat(files)
+    end
+  end
+
+end
diff --git a/ruby_2_2/lib/rake/rake_test_loader.rb b/ruby_2_2/lib/rake/rake_test_loader.rb
new file mode 100644
index 0000000000..7e3a6b3f35
--- /dev/null
+++ b/ruby_2_2/lib/rake/rake_test_loader.rb
@@ -0,0 +1,22 @@
+require 'rake'
+
+# Load the test files from the command line.
+argv = ARGV.select do |argument|
+  case argument
+  when /^-/ then
+    argument
+  when /\*/ then
+    FileList[argument].to_a.each do |file|
+      require File.expand_path file
+    end
+
+    false
+  else
+    require File.expand_path argument
+
+    false
+  end
+end
+
+ARGV.replace argv
+
diff --git a/ruby_2_2/lib/rake/rdoctask.rb b/ruby_2_2/lib/rake/rdoctask.rb
new file mode 100644
index 0000000000..8d7df4f12b
--- /dev/null
+++ b/ruby_2_2/lib/rake/rdoctask.rb
@@ -0,0 +1,4 @@
+# TODO: Remove in Rake 11
+
+fail "ERROR: 'rake/rdoctask' is obsolete and no longer supported. " +
+  "Use 'rdoc/task' (available in RDoc 2.4.2+) instead."
diff --git a/ruby_2_2/lib/rake/ruby182_test_unit_fix.rb b/ruby_2_2/lib/rake/ruby182_test_unit_fix.rb
new file mode 100644
index 0000000000..40b30a6fde
--- /dev/null
+++ b/ruby_2_2/lib/rake/ruby182_test_unit_fix.rb
@@ -0,0 +1,29 @@
+# TODO: Remove in rake 11
+
+# Local Rake override to fix bug in Ruby 0.8.2
+module Test                     # :nodoc:
+  # Local Rake override to fix bug in Ruby 0.8.2
+  module Unit                   # :nodoc:
+    # Local Rake override to fix bug in Ruby 0.8.2
+    module Collector            # :nodoc:
+      # Local Rake override to fix bug in Ruby 0.8.2
+      class Dir                 # :nodoc:
+        undef collect_file
+        def collect_file(name, suites, already_gathered) # :nodoc:
+          dir = File.dirname(File.expand_path(name))
+          $:.unshift(dir) unless $:.first == dir
+          if @req
+            @req.require(name)
+          else
+            require(name)
+          end
+          find_test_cases(already_gathered).each do |t|
+            add_suite(suites, t.suite)
+          end
+        ensure
+          $:.delete_at $:.rindex(dir)
+        end
+      end
+    end
+  end
+end
diff --git a/ruby_2_2/lib/rake/rule_recursion_overflow_error.rb b/ruby_2_2/lib/rake/rule_recursion_overflow_error.rb
new file mode 100644
index 0000000000..da4318da9d
--- /dev/null
+++ b/ruby_2_2/lib/rake/rule_recursion_overflow_error.rb
@@ -0,0 +1,20 @@
+
+module Rake
+
+  # Error indicating a recursion overflow error in task selection.
+  class RuleRecursionOverflowError < StandardError
+    def initialize(*args)
+      super
+      @targets = []
+    end
+
+    def add_target(target)
+      @targets << target
+    end
+
+    def message
+      super + ": [" + @targets.reverse.join(' => ') + "]"
+    end
+  end
+
+end
diff --git a/ruby_2_2/lib/rake/runtest.rb b/ruby_2_2/lib/rake/runtest.rb
new file mode 100644
index 0000000000..4774b0e262
--- /dev/null
+++ b/ruby_2_2/lib/rake/runtest.rb
@@ -0,0 +1,27 @@
+require 'test/unit'
+require 'test/unit/assertions'
+require 'rake/file_list'
+
+module Rake
+  include Test::Unit::Assertions
+
+  ##
+  # Deprecated way of running tests in process, but only for Test::Unit.
+  #--
+  # TODO: Remove in rake 11
+
+  def run_tests(pattern='test/test*.rb', log_enabled=false) # :nodoc:
+    FileList.glob(pattern).each do |fn|
+      $stderr.puts fn if log_enabled
+      begin
+        require fn
+      rescue Exception => ex
+        $stderr.puts "Error in #{fn}: #{ex.message}"
+        $stderr.puts ex.backtrace
+        assert false
+      end
+    end
+  end
+
+  extend self
+end
diff --git a/ruby_2_2/lib/rake/scope.rb b/ruby_2_2/lib/rake/scope.rb
new file mode 100644
index 0000000000..dbefcea465
--- /dev/null
+++ b/ruby_2_2/lib/rake/scope.rb
@@ -0,0 +1,42 @@
+module Rake
+  class Scope < LinkedList # :nodoc: all
+
+    # Path for the scope.
+    def path
+      map { |item| item.to_s }.reverse.join(":")
+    end
+
+    # Path for the scope + the named path.
+    def path_with_task_name(task_name)
+      "#{path}:#{task_name}"
+    end
+
+    # Trim +n+ innermost scope levels from the scope. In no case will
+    # this trim beyond the toplevel scope.
+    def trim(n)
+      result = self
+      while n > 0 && ! result.empty?
+        result = result.tail
+        n -= 1
+      end
+      result
+    end
+
+    # Scope lists always end with an EmptyScope object. See Null
+    # Object Pattern)
+    class EmptyScope < EmptyLinkedList
+      @parent = Scope
+
+      def path
+        ""
+      end
+
+      def path_with_task_name(task_name)
+        task_name
+      end
+    end
+
+    # Singleton null object for an empty scope.
+    EMPTY = EmptyScope.new
+  end
+end
diff --git a/ruby_2_2/lib/rake/task.rb b/ruby_2_2/lib/rake/task.rb
new file mode 100644
index 0000000000..9bcf725523
--- /dev/null
+++ b/ruby_2_2/lib/rake/task.rb
@@ -0,0 +1,383 @@
+require 'rake/invocation_exception_mixin'
+
+module Rake
+
+  ##
+  # A Task is the basic unit of work in a Rakefile.  Tasks have associated
+  # actions (possibly more than one) and a list of prerequisites.  When
+  # invoked, a task will first ensure that all of its prerequisites have an
+  # opportunity to run and then it will execute its own actions.
+  #
+  # Tasks are not usually created directly using the new method, but rather
+  # use the +file+ and +task+ convenience methods.
+  #
+  class Task
+    # List of prerequisites for a task.
+    attr_reader :prerequisites
+
+    # List of actions attached to a task.
+    attr_reader :actions
+
+    # Application owning this task.
+    attr_accessor :application
+
+    # Array of nested namespaces names used for task lookup by this task.
+    attr_reader :scope
+
+    # File/Line locations of each of the task definitions for this
+    # task (only valid if the task was defined with the detect
+    # location option set).
+    attr_reader :locations
+
+    # Return task name
+    def to_s
+      name
+    end
+
+    def inspect # :nodoc:
+      "<#{self.class} #{name} => [#{prerequisites.join(', ')}]>"
+    end
+
+    # List of sources for task.
+    attr_writer :sources
+    def sources
+      if defined?(@sources)
+        @sources
+      else
+        prerequisites
+      end
+    end
+
+    # List of prerequisite tasks
+    def prerequisite_tasks
+      prerequisites.map { |pre| lookup_prerequisite(pre) }
+    end
+
+    def lookup_prerequisite(prerequisite_name) # :nodoc:
+      application[prerequisite_name, @scope]
+    end
+    private :lookup_prerequisite
+
+    # List of all unique prerequisite tasks including prerequisite tasks'
+    # prerequisites.
+    # Includes self when cyclic dependencies are found.
+    def all_prerequisite_tasks
+      seen = {}
+      collect_prerequisites(seen)
+      seen.values
+    end
+
+    def collect_prerequisites(seen) # :nodoc:
+      prerequisite_tasks.each do |pre|
+        next if seen[pre.name]
+        seen[pre.name] = pre
+        pre.collect_prerequisites(seen)
+      end
+    end
+    protected :collect_prerequisites
+
+    # First source from a rule (nil if no sources)
+    def source
+      sources.first
+    end
+
+    # Create a task named +task_name+ with no actions or prerequisites. Use
+    # +enhance+ to add actions and prerequisites.
+    def initialize(task_name, app)
+      @name            = task_name.to_s
+      @prerequisites   = []
+      @actions         = []
+      @already_invoked = false
+      @comments        = []
+      @lock            = Monitor.new
+      @application     = app
+      @scope           = app.current_scope
+      @arg_names       = nil
+      @locations       = []
+    end
+
+    # Enhance a task with prerequisites or actions.  Returns self.
+    def enhance(deps=nil, &block)
+      @prerequisites |= deps if deps
+      @actions << block if block_given?
+      self
+    end
+
+    # Name of the task, including any namespace qualifiers.
+    def name
+      @name.to_s
+    end
+
+    # Name of task with argument list description.
+    def name_with_args # :nodoc:
+      if arg_description
+        "#{name}#{arg_description}"
+      else
+        name
+      end
+    end
+
+    # Argument description (nil if none).
+    def arg_description # :nodoc:
+      @arg_names ? "[#{arg_names.join(',')}]" : nil
+    end
+
+    # Name of arguments for this task.
+    def arg_names
+      @arg_names || []
+    end
+
+    # Reenable the task, allowing its tasks to be executed if the task
+    # is invoked again.
+    def reenable
+      @already_invoked = false
+    end
+
+    # Clear the existing prerequisites and actions of a rake task.
+    def clear
+      clear_prerequisites
+      clear_actions
+      clear_comments
+      self
+    end
+
+    # Clear the existing prerequisites of a rake task.
+    def clear_prerequisites
+      prerequisites.clear
+      self
+    end
+
+    # Clear the existing actions on a rake task.
+    def clear_actions
+      actions.clear
+      self
+    end
+
+    # Clear the existing comments on a rake task.
+    def clear_comments
+      @comments = []
+      self
+    end
+
+    # Invoke the task if it is needed.  Prerequisites are invoked first.
+    def invoke(*args)
+      task_args = TaskArguments.new(arg_names, args)
+      invoke_with_call_chain(task_args, InvocationChain::EMPTY)
+    end
+
+    # Same as invoke, but explicitly pass a call chain to detect
+    # circular dependencies.
+    def invoke_with_call_chain(task_args, invocation_chain) # :nodoc:
+      new_chain = InvocationChain.append(self, invocation_chain)
+      @lock.synchronize do
+        if application.options.trace
+          application.trace "** Invoke #{name} #{format_trace_flags}"
+        end
+        return if @already_invoked
+        @already_invoked = true
+        invoke_prerequisites(task_args, new_chain)
+        execute(task_args) if needed?
+      end
+    rescue Exception => ex
+      add_chain_to(ex, new_chain)
+      raise ex
+    end
+    protected :invoke_with_call_chain
+
+    def add_chain_to(exception, new_chain) # :nodoc:
+      exception.extend(InvocationExceptionMixin) unless
+        exception.respond_to?(:chain)
+      exception.chain = new_chain if exception.chain.nil?
+    end
+    private :add_chain_to
+
+    # Invoke all the prerequisites of a task.
+    def invoke_prerequisites(task_args, invocation_chain) # :nodoc:
+      if application.options.always_multitask
+        invoke_prerequisites_concurrently(task_args, invocation_chain)
+      else
+        prerequisite_tasks.each { |p|
+          prereq_args = task_args.new_scope(p.arg_names)
+          p.invoke_with_call_chain(prereq_args, invocation_chain)
+        }
+      end
+    end
+
+    # Invoke all the prerequisites of a task in parallel.
+    def invoke_prerequisites_concurrently(task_args, invocation_chain)# :nodoc:
+      futures = prerequisite_tasks.map do |p|
+        prereq_args = task_args.new_scope(p.arg_names)
+        application.thread_pool.future(p) do |r|
+          r.invoke_with_call_chain(prereq_args, invocation_chain)
+        end
+      end
+      futures.each { |f| f.value }
+    end
+
+    # Format the trace flags for display.
+    def format_trace_flags
+      flags = []
+      flags << "first_time" unless @already_invoked
+      flags << "not_needed" unless needed?
+      flags.empty? ? "" : "(" + flags.join(", ") + ")"
+    end
+    private :format_trace_flags
+
+    # Execute the actions associated with this task.
+    def execute(args=nil)
+      args ||= EMPTY_TASK_ARGS
+      if application.options.dryrun
+        application.trace "** Execute (dry run) #{name}"
+        return
+      end
+      application.trace "** Execute #{name}" if application.options.trace
+      application.enhance_with_matching_rule(name) if @actions.empty?
+      @actions.each do |act|
+        case act.arity
+        when 1
+          act.call(self)
+        else
+          act.call(self, args)
+        end
+      end
+    end
+
+    # Is this task needed?
+    def needed?
+      true
+    end
+
+    # Timestamp for this task.  Basic tasks return the current time for their
+    # time stamp.  Other tasks can be more sophisticated.
+    def timestamp
+      Time.now
+    end
+
+    # Add a description to the task.  The description can consist of an option
+    # argument list (enclosed brackets) and an optional comment.
+    def add_description(description)
+      return unless description
+      comment = description.strip
+      add_comment(comment) if comment && ! comment.empty?
+    end
+
+    def comment=(comment) # :nodoc:
+      add_comment(comment)
+    end
+
+    def add_comment(comment) # :nodoc:
+      return if comment.nil?
+      @comments << comment unless @comments.include?(comment)
+    end
+    private :add_comment
+
+    # Full collection of comments. Multiple comments are separated by
+    # newlines.
+    def full_comment
+      transform_comments("\n")
+    end
+
+    # First line (or sentence) of all comments. Multiple comments are
+    # separated by a "/".
+    def comment
+      transform_comments(" / ") { |c| first_sentence(c) }
+    end
+
+    # Transform the list of comments as specified by the block and
+    # join with the separator.
+    def transform_comments(separator, &block)
+      if @comments.empty?
+        nil
+      else
+        block ||= lambda { |c| c }
+        @comments.map(&block).join(separator)
+      end
+    end
+    private :transform_comments
+
+    # Get the first sentence in a string. The sentence is terminated
+    # by the first period or the end of the line. Decimal points do
+    # not count as periods.
+    def first_sentence(string)
+      string.split(/\.[ \t]|\.$|\n/).first
+    end
+    private :first_sentence
+
+    # Set the names of the arguments for this task. +args+ should be
+    # an array of symbols, one for each argument name.
+    def set_arg_names(args)
+      @arg_names = args.map { |a| a.to_sym }
+    end
+
+    # Return a string describing the internal state of a task.  Useful for
+    # debugging.
+    def investigation
+      result = "------------------------------\n"
+      result << "Investigating #{name}\n"
+      result << "class: #{self.class}\n"
+      result <<  "task needed: #{needed?}\n"
+      result <<  "timestamp: #{timestamp}\n"
+      result << "pre-requisites: \n"
+      prereqs = prerequisite_tasks
+      prereqs.sort! { |a, b| a.timestamp <=> b.timestamp }
+      prereqs.each do |p|
+        result << "--#{p.name} (#{p.timestamp})\n"
+      end
+      latest_prereq = prerequisite_tasks.map { |pre| pre.timestamp }.max
+      result <<  "latest-prerequisite time: #{latest_prereq}\n"
+      result << "................................\n\n"
+      return result
+    end
+
+    # ----------------------------------------------------------------
+    # Rake Module Methods
+    #
+    class << self
+
+      # Clear the task list.  This cause rake to immediately forget all the
+      # tasks that have been assigned.  (Normally used in the unit tests.)
+      def clear
+        Rake.application.clear
+      end
+
+      # List of all defined tasks.
+      def tasks
+        Rake.application.tasks
+      end
+
+      # Return a task with the given name.  If the task is not currently
+      # known, try to synthesize one from the defined rules.  If no rules are
+      # found, but an existing file matches the task name, assume it is a file
+      # task with no dependencies or actions.
+      def [](task_name)
+        Rake.application[task_name]
+      end
+
+      # TRUE if the task name is already defined.
+      def task_defined?(task_name)
+        Rake.application.lookup(task_name) != nil
+      end
+
+      # Define a task given +args+ and an option block.  If a rule with the
+      # given name already exists, the prerequisites and actions are added to
+      # the existing task.  Returns the defined task.
+      def define_task(*args, &block)
+        Rake.application.define_task(self, *args, &block)
+      end
+
+      # Define a rule for synthesizing tasks.
+      def create_rule(*args, &block)
+        Rake.application.create_rule(*args, &block)
+      end
+
+      # Apply the scope to the task name according to the rules for
+      # this kind of task.  Generic tasks will accept the scope as
+      # part of the name.
+      def scope_name(scope, task_name)
+#        (scope + [task_name]).join(':')
+        scope.path_with_task_name(task_name)
+      end
+
+    end # class << Rake::Task
+  end # class Rake::Task
+end
diff --git a/ruby_2_2/lib/rake/task_argument_error.rb b/ruby_2_2/lib/rake/task_argument_error.rb
new file mode 100644
index 0000000000..3e1dda64db
--- /dev/null
+++ b/ruby_2_2/lib/rake/task_argument_error.rb
@@ -0,0 +1,7 @@
+module Rake
+
+  # Error indicating an ill-formed task declaration.
+  class TaskArgumentError < ArgumentError
+  end
+
+end
diff --git a/ruby_2_2/lib/rake/task_arguments.rb b/ruby_2_2/lib/rake/task_arguments.rb
new file mode 100644
index 0000000000..fc0d657274
--- /dev/null
+++ b/ruby_2_2/lib/rake/task_arguments.rb
@@ -0,0 +1,98 @@
+module Rake
+
+  ##
+  # TaskArguments manage the arguments passed to a task.
+  #
+  class TaskArguments
+    include Enumerable
+
+    # Argument names
+    attr_reader :names
+
+    # Create a TaskArgument object with a list of argument +names+ and a set
+    # of associated +values+.  +parent+ is the parent argument object.
+    def initialize(names, values, parent=nil)
+      @names = names
+      @parent = parent
+      @hash = {}
+      @values = values
+      names.each_with_index { |name, i|
+        @hash[name.to_sym] = values[i] unless values[i].nil?
+      }
+    end
+
+    # Retrieve the complete array of sequential values
+    def to_a
+      @values.dup
+    end
+
+    # Retrieve the list of values not associated with named arguments
+    def extras
+      @values[@names.length..-1] || []
+    end
+
+    # Create a new argument scope using the prerequisite argument
+    # names.
+    def new_scope(names)
+      values = names.map { |n| self[n] }
+      self.class.new(names, values + extras, self)
+    end
+
+    # Find an argument value by name or index.
+    def [](index)
+      lookup(index.to_sym)
+    end
+
+    # Specify a hash of default values for task arguments. Use the
+    # defaults only if there is no specific value for the given
+    # argument.
+    def with_defaults(defaults)
+      @hash = defaults.merge(@hash)
+    end
+
+    # Enumerates the arguments and their values
+    def each(&block)
+      @hash.each(&block)
+    end
+
+    # Extracts the argument values at +keys+
+    def values_at(*keys)
+      keys.map { |k| lookup(k) }
+    end
+
+    # Returns the value of the given argument via method_missing
+    def method_missing(sym, *args)
+      lookup(sym.to_sym)
+    end
+
+    # Returns a Hash of arguments and their values
+    def to_hash
+      @hash
+    end
+
+    def to_s # :nodoc:
+      @hash.inspect
+    end
+
+    def inspect # :nodoc:
+      to_s
+    end
+
+    # Returns true if +key+ is one of the arguments
+    def has_key?(key)
+      @hash.has_key?(key)
+    end
+
+    protected
+
+    def lookup(name) # :nodoc:
+      if @hash.has_key?(name)
+        @hash[name]
+      elsif @parent
+        @parent.lookup(name)
+      end
+    end
+  end
+
+  EMPTY_TASK_ARGS = TaskArguments.new([], []) # :nodoc:
+end
diff --git a/ruby_2_2/lib/rake/task_manager.rb b/ruby_2_2/lib/rake/task_manager.rb
new file mode 100644
index 0000000000..cbb9f5ee2f
--- /dev/null
+++ b/ruby_2_2/lib/rake/task_manager.rb
@@ -0,0 +1,310 @@
+module Rake
+
+  # The TaskManager module is a mixin for managing tasks.
+  module TaskManager
+    # Track the last comment made in the Rakefile.
+    attr_accessor :last_description
+
+    # TODO: Remove in Rake 11
+
+    alias :last_comment :last_description # :nodoc: Backwards compatibility
+
+    def initialize # :nodoc:
+      super
+      @tasks = Hash.new
+      @rules = Array.new
+      @scope = Scope.make
+      @last_description = nil
+    end
+
+    def create_rule(*args, &block) # :nodoc:
+      pattern, args, deps = resolve_args(args)
+      pattern = Regexp.new(Regexp.quote(pattern) + '$') if String === pattern
+      @rules << [pattern, args, deps, block]
+    end
+
+    def define_task(task_class, *args, &block) # :nodoc:
+      task_name, arg_names, deps = resolve_args(args)
+
+      original_scope = @scope
+      if String === task_name and
+         not task_class.ancestors.include? Rake::FileTask then
+        task_name, *definition_scope = *(task_name.split(":").reverse)
+        @scope = Scope.make(*(definition_scope + @scope.to_a))
+      end
+
+      task_name = task_class.scope_name(@scope, task_name)
+      deps = [deps] unless deps.respond_to?(:to_ary)
+      deps = deps.map { |d| Rake.from_pathname(d).to_s }
+      task = intern(task_class, task_name)
+      task.set_arg_names(arg_names) unless arg_names.empty?
+      if Rake::TaskManager.record_task_metadata
+        add_location(task)
+        task.add_description(get_description(task))
+      end
+      task.enhance(deps, &block)
+    ensure
+      @scope = original_scope
+    end
+
+    # Lookup a task.  Return an existing task if found, otherwise
+    # create a task of the current type.
+    def intern(task_class, task_name)
+      @tasks[task_name.to_s] ||= task_class.new(task_name, self)
+    end
+
+    # Find a matching task for +task_name+.
+    def [](task_name, scopes=nil)
+      task_name = task_name.to_s
+      self.lookup(task_name, scopes) or
+        enhance_with_matching_rule(task_name) or
+        synthesize_file_task(task_name) or
+        fail "Don't know how to build task '#{task_name}'"
+    end
+
+    def synthesize_file_task(task_name) # :nodoc:
+      return nil unless File.exist?(task_name)
+      define_task(Rake::FileTask, task_name)
+    end
+
+    # Resolve the arguments for a task/rule.  Returns a triplet of
+    # [task_name, arg_name_list, prerequisites].
+    def resolve_args(args)
+      if args.last.is_a?(Hash)
+        deps = args.pop
+        resolve_args_with_dependencies(args, deps)
+      else
+        resolve_args_without_dependencies(args)
+      end
+    end
+
+    # Resolve task arguments for a task or rule when there are no
+    # dependencies declared.
+    #
+    # The patterns recognized by this argument resolving function are:
+    #
+    #   task :t
+    #   task :t, [:a]
+    #
+    def resolve_args_without_dependencies(args)
+      task_name = args.shift
+      if args.size == 1 && args.first.respond_to?(:to_ary)
+        arg_names = args.first.to_ary
+      else
+        arg_names = args
+      end
+      [task_name, arg_names, []]
+    end
+    private :resolve_args_without_dependencies
+
+    # Resolve task arguments for a task or rule when there are
+    # dependencies declared.
+    #
+    # The patterns recognized by this argument resolving function are:
+    #
+    #   task :t => [:d]
+    #   task :t, [a] => [:d]
+    #
+    def resolve_args_with_dependencies(args, hash) # :nodoc:
+      fail "Task Argument Error" if hash.size != 1
+      key, value = hash.map { |k, v| [k, v] }.first
+      if args.empty?
+        task_name = key
+        arg_names = []
+        deps = value || []
+      else
+        task_name = args.shift
+        arg_names = key
+        deps = value
+      end
+      deps = [deps] unless deps.respond_to?(:to_ary)
+      [task_name, arg_names, deps]
+    end
+    private :resolve_args_with_dependencies
+
+    # If a rule can be found that matches the task name, enhance the
+    # task with the prerequisites and actions from the rule.  Set the
+    # source attribute of the task appropriately for the rule.  Return
+    # the enhanced task or nil of no rule was found.
+    def enhance_with_matching_rule(task_name, level=0)
+      fail Rake::RuleRecursionOverflowError,
+        "Rule Recursion Too Deep" if level >= 16
+      @rules.each do |pattern, args, extensions, block|
+        if pattern.match(task_name)
+          task = attempt_rule(task_name, args, extensions, block, level)
+          return task if task
+        end
+      end
+      nil
+    rescue Rake::RuleRecursionOverflowError => ex
+      ex.add_target(task_name)
+      fail ex
+    end
+
+    # List of all defined tasks in this application.
+    def tasks
+      @tasks.values.sort_by { |t| t.name }
+    end
+
+    # List of all the tasks defined in the given scope (and its
+    # sub-scopes).
+    def tasks_in_scope(scope)
+      prefix = scope.path
+      tasks.select { |t|
+        /^#{prefix}:/ =~ t.name
+      }
+    end
+
+    # Clear all tasks in this application.
+    def clear
+      @tasks.clear
+      @rules.clear
+    end
+
+    # Lookup a task, using scope and the scope hints in the task name.
+    # This method performs straight lookups without trying to
+    # synthesize file tasks or rules.  Special scope names (e.g. '^')
+    # are recognized.  If no scope argument is supplied, use the
+    # current scope.  Return nil if the task cannot be found.
+    def lookup(task_name, initial_scope=nil)
+      initial_scope ||= @scope
+      task_name = task_name.to_s
+      if task_name =~ /^rake:/
+        scopes = Scope.make
+        task_name = task_name.sub(/^rake:/, '')
+      elsif task_name =~ /^(\^+)/
+        scopes = initial_scope.trim($1.size)
+        task_name = task_name.sub(/^(\^+)/, '')
+      else
+        scopes = initial_scope
+      end
+      lookup_in_scope(task_name, scopes)
+    end
+
+    # Lookup the task name
+    def lookup_in_scope(name, scope)
+      loop do
+        tn = scope.path_with_task_name(name)
+        task = @tasks[tn]
+        return task if task
+        break if scope.empty?
+        scope = scope.tail
+      end
+      nil
+    end
+    private :lookup_in_scope
+
+    # Return the list of scope names currently active in the task
+    # manager.
+    def current_scope
+      @scope
+    end
+
+    # Evaluate the block in a nested namespace named +name+.  Create
+    # an anonymous namespace if +name+ is nil.
+    def in_namespace(name)
+      name ||= generate_name
+      @scope = Scope.new(name, @scope)
+      ns = NameSpace.new(self, @scope)
+      yield(ns)
+      ns
+    ensure
+      @scope = @scope.tail
+    end
+
+    private
+
+    # Add a location to the locations field of the given task.
+    def add_location(task)
+      loc = find_location
+      task.locations << loc if loc
+      task
+    end
+
+    # Find the location that called into the dsl layer.
+    def find_location
+      locations = caller
+      i = 0
+      while locations[i]
+        return locations[i + 1] if locations[i] =~ /rake\/dsl_definition.rb/
+        i += 1
+      end
+      nil
+    end
+
+    # Generate an anonymous namespace name.
+    def generate_name
+      @seed ||= 0
+      @seed += 1
+      "_anon_#{@seed}"
+    end
+
+    def trace_rule(level, message) # :nodoc:
+      options.trace_output.puts "#{"    " * level}#{message}" if
+        Rake.application.options.trace_rules
+    end
+
+    # Attempt to create a rule given the list of prerequisites.
+    def attempt_rule(task_name, args, extensions, block, level)
+      sources = make_sources(task_name, extensions)
+      prereqs = sources.map { |source|
+        trace_rule level, "Attempting Rule #{task_name} => #{source}"
+        if File.exist?(source) || Rake::Task.task_defined?(source)
+          trace_rule level, "(#{task_name} => #{source} ... EXIST)"
+          source
+        elsif parent = enhance_with_matching_rule(source, level + 1)
+          trace_rule level, "(#{task_name} => #{source} ... ENHANCE)"
+          parent.name
+        else
+          trace_rule level, "(#{task_name} => #{source} ... FAIL)"
+          return nil
+        end
+      }
+      task = FileTask.define_task(task_name, {args => prereqs}, &block)
+      task.sources = prereqs
+      task
+    end
+
+    # Make a list of sources from the list of file name extensions /
+    # translation procs.
+    def make_sources(task_name, extensions)
+      result = extensions.map { |ext|
+        case ext
+        when /%/
+          task_name.pathmap(ext)
+        when %r{/}
+          ext
+        when /^\./
+          task_name.ext(ext)
+        when String
+          ext
+        when Proc, Method
+          if ext.arity == 1
+            ext.call(task_name)
+          else
+            ext.call
+          end
+        else
+          fail "Don't know how to handle rule dependent: #{ext.inspect}"
+        end
+      }
+      result.flatten
+    end
+
+
+    private
+
+    # Return the current description, clearing it in the process.
+    def get_description(task)
+      desc = @last_description
+      @last_description = nil
+      desc
+    end
+
+    class << self
+      attr_accessor :record_task_metadata # :nodoc:
+      TaskManager.record_task_metadata = false
+    end
+  end
+
+end
diff --git a/ruby_2_2/lib/rake/tasklib.rb b/ruby_2_2/lib/rake/tasklib.rb
new file mode 100644
index 0000000000..6203d9402b
--- /dev/null
+++ b/ruby_2_2/lib/rake/tasklib.rb
@@ -0,0 +1,24 @@
+require 'rake'
+
+module Rake
+
+  # Base class for Task Libraries.
+  class TaskLib
+    include Cloneable
+    include Rake::DSL
+
+    # Make a symbol by pasting two strings together.
+    #
+    # NOTE: DEPRECATED! This method is kinda stupid. I don't know why
+    # I didn't just use string interpolation. But now other task
+    # libraries depend on this so I can't remove it without breaking
+    # other people's code. So for now it stays for backwards
+    # compatibility. BUT DON'T USE IT.
+    #--
+    # TODO: Remove in Rake 11
+    def paste(a, b)             # :nodoc:
+      (a.to_s + b.to_s).intern
+    end
+  end
+
+end
diff --git a/ruby_2_2/lib/rake/testtask.rb b/ruby_2_2/lib/rake/testtask.rb
new file mode 100644
index 0000000000..2daa589634
--- /dev/null
+++ b/ruby_2_2/lib/rake/testtask.rb
@@ -0,0 +1,212 @@
+require 'rake'
+require 'rake/tasklib'
+
+module Rake
+
+  # Create a task that runs a set of tests.
+  #
+  # Example:
+  #
+  #   Rake::TestTask.new do |t|
+  #     t.libs << "test"
+  #     t.test_files = FileList['test/test*.rb']
+  #     t.verbose = true
+  #   end
+  #
+  # If rake is invoked with a "TEST=filename" command line option,
+  # then the list of test files will be overridden to include only the
+  # filename specified on the command line.  This provides an easy way
+  # to run just one test.
+  #
+  # If rake is invoked with a "TESTOPTS=options" command line option,
+  # then the given options are passed to the test process after a
+  # '--'.  This allows Test::Unit options to be passed to the test
+  # suite.
+  #
+  # Examples:
+  #
+  #   rake test                           # run tests normally
+  #   rake test TEST=just_one_file.rb     # run just one test file.
+  #   rake test TESTOPTS="-v"             # run in verbose mode
+  #   rake test TESTOPTS="--runner=fox"   # use the fox test runner
+  #
+  class TestTask < TaskLib
+
+    # Name of test task. (default is :test)
+    attr_accessor :name
+
+    # List of directories to added to $LOAD_PATH before running the
+    # tests. (default is 'lib')
+    attr_accessor :libs
+
+    # True if verbose test output desired. (default is false)
+    attr_accessor :verbose
+
+    # Test options passed to the test suite.  An explicit
+    # TESTOPTS=opts on the command line will override this. (default
+    # is NONE)
+    attr_accessor :options
+
+    # Request that the tests be run with the warning flag set.
+    # E.g. warning=true implies "ruby -w" used to run the tests.
+    attr_accessor :warning
+
+    # Glob pattern to match test files. (default is 'test/test*.rb')
+    attr_accessor :pattern
+
+    # Style of test loader to use.  Options are:
+    #
+    # * :rake -- Rake provided test loading script (default).
+    # * :testrb -- Ruby provided test loading script.
+    # * :direct -- Load tests using command line loader.
+    #
+    attr_accessor :loader
+
+    # Array of commandline options to pass to ruby when running test loader.
+    attr_accessor :ruby_opts
+
+    # Description of the test task. (default is 'Run tests')
+    attr_accessor :description
+
+    # Explicitly define the list of test files to be included in a
+    # test.  +list+ is expected to be an array of file names (a
+    # FileList is acceptable).  If both +pattern+ and +test_files+ are
+    # used, then the list of test files is the union of the two.
+    def test_files=(list)
+      @test_files = list
+    end
+
+    # Create a testing task.
+    def initialize(name=:test)
+      @name = name
+      @libs = ["lib"]
+      @pattern = nil
+      @options = nil
+      @test_files = nil
+      @verbose = false
+      @warning = false
+      @loader = :rake
+      @ruby_opts = []
+      @description = "Run tests" + (@name == :test ? "" : " for #{@name}")
+      yield self if block_given?
+      @pattern = 'test/test*.rb' if @pattern.nil? && @test_files.nil?
+      define
+    end
+
+    # Create the tasks defined by this task lib.
+    def define
+      desc @description
+      task @name do
+        FileUtilsExt.verbose(@verbose) do
+          args =
+            "#{ruby_opts_string} #{run_code} " +
+            "#{file_list_string} #{option_list}"
+          ruby args do |ok, status|
+            if !ok && status.respond_to?(:signaled?) && status.signaled?
+              raise SignalException.new(status.termsig)
+            elsif !ok
+              fail "Command failed with status (#{status.exitstatus}): " +
+                "[ruby #{args}]"
+            end
+          end
+        end
+      end
+      self
+    end
+
+    def option_list # :nodoc:
+      (ENV['TESTOPTS'] ||
+        ENV['TESTOPT'] ||
+        ENV['TEST_OPTS'] ||
+        ENV['TEST_OPT'] ||
+        @options ||
+        "")
+    end
+
+    def ruby_opts_string # :nodoc:
+      opts = @ruby_opts.dup
+      opts.unshift("-I\"#{lib_path}\"") unless @libs.empty?
+      opts.unshift("-w") if @warning
+      opts.join(" ")
+    end
+
+    def lib_path # :nodoc:
+      @libs.join(File::PATH_SEPARATOR)
+    end
+
+    def file_list_string # :nodoc:
+      file_list.map { |fn| "\"#{fn}\"" }.join(' ')
+    end
+
+    def file_list # :nodoc:
+      if ENV['TEST']
+        FileList[ENV['TEST']]
+      else
+        result = []
+        result += @test_files.to_a if @test_files
+        result << @pattern if @pattern
+        result
+      end
+    end
+
+    def fix # :nodoc:
+      case ruby_version
+      when '1.8.2'
+        "\"#{find_file 'rake/ruby182_test_unit_fix'}\""
+      else
+        nil
+      end || ''
+    end
+
+    def ruby_version # :nodoc:
+      RUBY_VERSION
+    end
+
+    def run_code # :nodoc:
+      case @loader
+      when :direct
+        "-e \"ARGV.each{|f| require f}\""
+      when :testrb
+        "-S testrb #{fix}"
+      when :rake
+        "#{rake_include_arg} \"#{rake_loader}\""
+      end
+    end
+
+    def rake_loader # :nodoc:
+      find_file('rake/rake_test_loader') or
+        fail "unable to find rake test loader"
+    end
+
+    def find_file(fn) # :nodoc:
+      $LOAD_PATH.each do |path|
+        file_path = File.join(path, "#{fn}.rb")
+        return file_path if File.exist? file_path
+      end
+      nil
+    end
+
+    def rake_include_arg # :nodoc:
+      spec = Gem.loaded_specs['rake']
+      if spec.respond_to?(:default_gem?) && spec.default_gem?
+        ""
+      else
+        "-I\"#{rake_lib_dir}\""
+      end
+    end
+
+    def rake_lib_dir # :nodoc:
+      find_dir('rake') or
+        fail "unable to find rake lib"
+    end
+
+    def find_dir(fn) # :nodoc:
+      $LOAD_PATH.each do |path|
+        file_path = File.join(path, "#{fn}.rb")
+        return path if File.exist? file_path
+      end
+      nil
+    end
+
+  end
+end
diff --git a/ruby_2_2/lib/rake/thread_history_display.rb b/ruby_2_2/lib/rake/thread_history_display.rb
new file mode 100644
index 0000000000..c2af9ecef5
--- /dev/null
+++ b/ruby_2_2/lib/rake/thread_history_display.rb
@@ -0,0 +1,48 @@
+require 'rake/private_reader'
+
+module Rake
+
+  class ThreadHistoryDisplay    # :nodoc: all
+    include Rake::PrivateReader
+
+    private_reader :stats, :items, :threads
+
+    def initialize(stats)
+      @stats   = stats
+      @items   = { :_seq_ =>  1  }
+      @threads = { :_seq_ => "A" }
+    end
+
+    def show
+      puts "Job History:"
+      stats.each do |stat|
+        stat[:data] ||= {}
+        rename(stat, :thread, threads)
+        rename(stat[:data], :item_id, items)
+        rename(stat[:data], :new_thread, threads)
+        rename(stat[:data], :deleted_thread, threads)
+        printf("%8d %2s %-20s %s\n",
+          (stat[:time] * 1_000_000).round,
+          stat[:thread],
+          stat[:event],
+          stat[:data].map do |k, v| "#{k}:#{v}" end.join(" "))
+      end
+    end
+
+    private
+
+    def rename(hash, key, renames)
+      if hash && hash[key]
+        original = hash[key]
+        value = renames[original]
+        unless value
+          value = renames[:_seq_]
+          renames[:_seq_] = renames[:_seq_].succ
+          renames[original] = value
+        end
+        hash[key] = value
+      end
+    end
+  end
+
+end
diff --git a/ruby_2_2/lib/rake/thread_pool.rb b/ruby_2_2/lib/rake/thread_pool.rb
new file mode 100644
index 0000000000..d2ac6e7ac2
--- /dev/null
+++ b/ruby_2_2/lib/rake/thread_pool.rb
@@ -0,0 +1,164 @@
+require 'thread'
+require 'set'
+
+require 'rake/promise'
+
+module Rake
+
+  class ThreadPool # :nodoc: all
+
+    # Creates a ThreadPool object.  The +thread_count+ parameter is the size
+    # of the pool.
+    def initialize(thread_count)
+      @max_active_threads = [thread_count, 0].max
+      @threads = Set.new
+      @threads_mon = Monitor.new
+      @queue = Queue.new
+      @join_cond = @threads_mon.new_cond
+
+      @history_start_time = nil
+      @history = []
+      @history_mon = Monitor.new
+      @total_threads_in_play = 0
+    end
+
+    # Creates a future executed by the +ThreadPool+.
+    #
+    # The args are passed to the block when executing (similarly to
+    # Thread#new) The return value is an object representing
+    # a future which has been created and added to the queue in the
+    # pool. Sending #value to the object will sleep the
+    # current thread until the future is finished and will return the
+    # result (or raise an exception thrown from the future)
+    def future(*args, &block)
+      promise = Promise.new(args, &block)
+      promise.recorder = lambda { |*stats| stat(*stats) }
+
+      @queue.enq promise
+      stat :queued, :item_id => promise.object_id
+      start_thread
+      promise
+    end
+
+    # Waits until the queue of futures is empty and all threads have exited.
+    def join
+      @threads_mon.synchronize do
+        begin
+          stat :joining
+          @join_cond.wait unless @threads.empty?
+          stat :joined
+        rescue Exception => e
+          stat :joined
+          $stderr.puts e
+          $stderr.print "Queue contains #{@queue.size} items. " +
+            "Thread pool contains #{@threads.count} threads\n"
+          $stderr.print "Current Thread #{Thread.current} status = " +
+            "#{Thread.current.status}\n"
+          $stderr.puts e.backtrace.join("\n")
+          @threads.each do |t|
+            $stderr.print "Thread #{t} status = #{t.status}\n"
+            # 1.8 doesn't support Thread#backtrace
+            $stderr.puts t.backtrace.join("\n") if t.respond_to? :backtrace
+          end
+          raise e
+        end
+      end
+    end
+
+    # Enable the gathering of history events.
+    def gather_history          #:nodoc:
+      @history_start_time = Time.now if @history_start_time.nil?
+    end
+
+    # Return a array of history events for the thread pool.
+    #
+    # History gathering must be enabled to be able to see the events
+    # (see #gather_history). Best to call this when the job is
+    # complete (i.e. after ThreadPool#join is called).
+    def history                 # :nodoc:
+      @history_mon.synchronize { @history.dup }.
+        sort_by { |i| i[:time] }.
+        each { |i| i[:time] -= @history_start_time }
+    end
+
+    # Return a hash of always collected statistics for the thread pool.
+    def statistics              #  :nodoc:
+      {
+        :total_threads_in_play => @total_threads_in_play,
+        :max_active_threads => @max_active_threads,
+      }
+    end
+
+    private
+
+    # processes one item on the queue. Returns true if there was an
+    # item to process, false if there was no item
+    def process_queue_item      #:nodoc:
+      return false if @queue.empty?
+
+      # Even though we just asked if the queue was empty, it
+      # still could have had an item which by this statement
+      # is now gone. For this reason we pass true to Queue#deq
+      # because we will sleep indefinitely if it is empty.
+      promise = @queue.deq(true)
+      stat :dequeued, :item_id => promise.object_id
+      promise.work
+      return true
+
+      rescue ThreadError # this means the queue is empty
+      false
+    end
+
+    def safe_thread_count
+      @threads_mon.synchronize do
+        @threads.count
+      end
+    end
+
+    def start_thread # :nodoc:
+      @threads_mon.synchronize do
+        next unless @threads.count < @max_active_threads
+
+        t = Thread.new do
+          begin
+            while safe_thread_count <= @max_active_threads
+              break unless process_queue_item
+            end
+          ensure
+            @threads_mon.synchronize do
+              @threads.delete Thread.current
+              stat :ended, :thread_count => @threads.count
+              @join_cond.broadcast if @threads.empty?
+            end
+          end
+        end
+
+        @threads << t
+        stat(
+          :spawned,
+          :new_thread   => t.object_id,
+          :thread_count => @threads.count)
+        @total_threads_in_play = @threads.count if
+          @threads.count > @total_threads_in_play
+      end
+    end
+
+    def stat(event, data=nil) # :nodoc:
+      return if @history_start_time.nil?
+      info = {
+        :event  => event,
+        :data   => data,
+        :time   => Time.now,
+        :thread => Thread.current.object_id,
+      }
+      @history_mon.synchronize { @history << info }
+    end
+
+    # for testing only
+
+    def __queue__ # :nodoc:
+      @queue
+    end
+  end
+
+end
diff --git a/ruby_2_2/lib/rake/trace_output.rb b/ruby_2_2/lib/rake/trace_output.rb
new file mode 100644
index 0000000000..396096d4df
--- /dev/null
+++ b/ruby_2_2/lib/rake/trace_output.rb
@@ -0,0 +1,22 @@
+module Rake
+  module TraceOutput # :nodoc: all
+
+    # Write trace output to output stream +out+.
+    #
+    # The write is done as a single IO call (to print) to lessen the
+    # chance that the trace output is interrupted by other tasks also
+    # producing output.
+    def trace_on(out, *strings)
+      sep = $\ || "\n"
+      if strings.empty?
+        output = sep
+      else
+        output = strings.map { |s|
+          next if s.nil?
+          s =~ /#{sep}$/ ? s : s + sep
+        }.join
+      end
+      out.print(output)
+    end
+  end
+end
diff --git a/ruby_2_2/lib/rake/version.rb b/ruby_2_2/lib/rake/version.rb
new file mode 100644
index 0000000000..b9b1b2d485
--- /dev/null
+++ b/ruby_2_2/lib/rake/version.rb
@@ -0,0 +1,7 @@
+module Rake
+  module Version # :nodoc: all
+    MAJOR, MINOR, BUILD, *OTHER = Rake::VERSION.split '.'
+
+    NUMBERS = [MAJOR, MINOR, BUILD, *OTHER]
+  end
+end
diff --git a/ruby_2_2/lib/rake/win32.rb b/ruby_2_2/lib/rake/win32.rb
new file mode 100644
index 0000000000..6b4873da2c
--- /dev/null
+++ b/ruby_2_2/lib/rake/win32.rb
@@ -0,0 +1,56 @@
+
+module Rake
+  require 'rake/alt_system'
+
+  # Win 32 interface methods for Rake. Windows specific functionality
+  # will be placed here to collect that knowledge in one spot.
+  module Win32 # :nodoc: all
+
+    # Error indicating a problem in locating the home directory on a
+    # Win32 system.
+    class Win32HomeError < RuntimeError
+    end
+
+    class << self
+      # True if running on a windows system.
+      def windows?
+        AltSystem::WINDOWS
+      end
+
+      # Run a command line on windows.
+      def rake_system(*cmd)
+        AltSystem.system(*cmd)
+      end
+
+      # The standard directory containing system wide rake files on
+      # Win 32 systems. Try the following environment variables (in
+      # order):
+      #
+      # * HOME
+      # * HOMEDRIVE + HOMEPATH
+      # * APPDATA
+      # * USERPROFILE
+      #
+      # If the above are not defined, the return nil.
+      def win32_system_dir #:nodoc:
+        win32_shared_path = ENV['HOME']
+        if win32_shared_path.nil? && ENV['HOMEDRIVE'] && ENV['HOMEPATH']
+          win32_shared_path = ENV['HOMEDRIVE'] + ENV['HOMEPATH']
+        end
+
+        win32_shared_path ||= ENV['APPDATA']
+        win32_shared_path ||= ENV['USERPROFILE']
+        raise Win32HomeError,
+          "Unable to determine home path environment variable." if
+            win32_shared_path.nil? or win32_shared_path.empty?
+        normalize(File.join(win32_shared_path, 'Rake'))
+      end
+
+      # Normalize a win32 path so that the slashes are all forward slashes.
+      def normalize(path)
+        path.gsub(/\\/, '/')
+      end
+
+    end
+  end
+end