# frozen_string_literal: false
#
#   fork.rb -
#   	by Keiju ISHITSUKA(keiju@ruby-lang.org)
#

require_relative "nop"

module IRB
  # :stopdoc:

  module ExtendCommand
    class Fork < Nop
      def execute
        pid = __send__ ExtendCommand.irb_original_method_name("fork")
        unless pid
          class << self
            alias_method :exit, ExtendCommand.irb_original_method_name('exit')
          end
          if block_given?
            begin
              yield
            ensure
              exit
            end
          end
        end
        pid
      end
    end
  end

  # :startdoc:
end