晋太元中，武陵人捕鱼为业。缘溪行，忘路之远近。忽逢桃花林，夹岸数百步，中无杂树，芳草鲜美，落英缤纷。渔人甚异之，复前行，欲穷其林。 　　林尽水源，便得一山，山有小口，仿佛若有光。便舍船，从口入。初极狭，才通人。复行数十步，豁然开朗。土地平旷，屋舍俨然，有良田、美池、桑竹之属。阡陌交通，鸡犬相闻。其中往来种作，男女衣着，悉如外人。黄发垂髫，并怡然自乐。 　　见渔人，乃大惊，问所从来。具答之。便要还家，设酒杀鸡作食。村中闻有此人，咸来问讯。自云先世避秦时乱，率妻子邑人来此绝境，不复出焉，遂与外人间隔。问今是何世，乃不知有汉，无论魏晋。此人一一为具言所闻，皆叹惋。余人各复延至其家，皆出酒食。停数日，辞去。此中人语云：“不足为外人道也。”(间隔 一作：隔绝) 　　既出，得其船，便扶向路，处处志之。及郡下，诣太守，说如此。太守即遣人随其往，寻向所志，遂迷，不复得路。 　　南阳刘子骥，高尚士也，闻之，欣然规往。未果，寻病终。后遂无问津者。 sh-3ll

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DIR:/opt/alt/ruby26/lib64/ruby/2.6.0/bundler/
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Current File : //opt/alt/ruby26/lib64/ruby/2.6.0/bundler/current_ruby.rb
# frozen_string_literal: true

module Bundler
  # Returns current version of Ruby
  #
  # @return [CurrentRuby] Current version of Ruby
  def self.current_ruby
    @current_ruby ||= CurrentRuby.new
  end

  class CurrentRuby
    KNOWN_MINOR_VERSIONS = %w[
      1.8
      1.9
      2.0
      2.1
      2.2
      2.3
      2.4
      2.5
      2.6
    ].freeze

    KNOWN_MAJOR_VERSIONS = KNOWN_MINOR_VERSIONS.map {|v| v.split(".", 2).first }.uniq.freeze

    KNOWN_PLATFORMS = %w[
      jruby
      maglev
      mingw
      mri
      mswin
      mswin64
      rbx
      ruby
      truffleruby
      x64_mingw
    ].freeze

    def ruby?
      !mswin? && (!defined?(RUBY_ENGINE) || RUBY_ENGINE == "ruby" ||
          RUBY_ENGINE == "rbx" || RUBY_ENGINE == "maglev" || RUBY_ENGINE == "truffleruby")
    end

    def mri?
      !mswin? && (!defined?(RUBY_ENGINE) || RUBY_ENGINE == "ruby")
    end

    def rbx?
      ruby? && defined?(RUBY_ENGINE) && RUBY_ENGINE == "rbx"
    end

    def jruby?
      defined?(RUBY_ENGINE) && RUBY_ENGINE == "jruby"
    end

    def maglev?
      defined?(RUBY_ENGINE) && RUBY_ENGINE == "maglev"
    end

    def truffleruby?
      defined?(RUBY_ENGINE) && RUBY_ENGINE == "truffleruby"
    end

    def mswin?
      Bundler::WINDOWS
    end

    def mswin64?
      Bundler::WINDOWS && Bundler.local_platform != Gem::Platform::RUBY && Bundler.local_platform.os == "mswin64" && Bundler.local_platform.cpu == "x64"
    end

    def mingw?
      Bundler::WINDOWS && Bundler.local_platform != Gem::Platform::RUBY && Bundler.local_platform.os == "mingw32" && Bundler.local_platform.cpu != "x64"
    end

    def x64_mingw?
      Bundler::WINDOWS && Bundler.local_platform != Gem::Platform::RUBY && Bundler.local_platform.os == "mingw32" && Bundler.local_platform.cpu == "x64"
    end

    (KNOWN_MINOR_VERSIONS + KNOWN_MAJOR_VERSIONS).each do |version|
      trimmed_version = version.tr(".", "")
      define_method(:"on_#{trimmed_version}?") do
        RUBY_VERSION.start_with?("#{version}.")
      end

      KNOWN_PLATFORMS.each do |platform|
        define_method(:"#{platform}_#{trimmed_version}?") do
          send(:"#{platform}?") && send(:"on_#{trimmed_version}?")
        end
      end
    end
  end
end