show_release_notes

# File lib/rubygems/commands/setup_command.rb, line 539
  def show_release_notes
    release_notes = File.join Dir.pwd, 'History.txt'

    release_notes =
      if File.exist? release_notes then
        history = File.read release_notes

        history.force_encoding Encoding::UTF_8 if
          Object.const_defined? :Encoding

        history = history.sub(/^# coding:.*?(?=^=)/, '')

        text = history.split(HISTORY_HEADER)
        text.shift # correct an off-by-one generated by split
        version_lines = history.scan(HISTORY_HEADER)
        versions = history.scan(VERSION_MATCHER).flatten.map do |x|
          Gem::Version.new(x)
        end

        history_string = ""

        until versions.length == 0 or
              versions.shift < options[:previous_version] do
          history_string += version_lines.shift + text.shift
        end

        history_string
      else
        "Oh-no! Unable to find release notes!"
      end

    say release_notes
  end