add_delegate_command_to_shell

# File lib/shell/command-processor.rb, line 519
    def self.add_delegate_command_to_shell(id)
      id = id.intern if id.kind_of?(String)
      name = id.id2name
      if Shell.method_defined?(id)
        Shell.notify "warn: override definnition of Shell##{name}."
        Shell.notify "warn: alias Shell##{name} to Shell##{name}_org.\n"
        Shell.module_eval "alias #{name}_org #{name}"
      end
      Shell.notify "method added: Shell##{name}.", Shell.debug?
      Shell.module_eval(%[def #{name}(*args, &block)
                            begin
                              @command_processor.__send__(:#{name}, *args, &block)
                            rescue Exception
                              $@.delete_if{|s| /:in `__getobj__'$/ =~ s} #`
                              $@.delete_if{|s| /^\\(eval\\):/ =~ s}
                            raise
                            end
                          end], __FILE__, __LINE__)

      if Shell::Filter.method_defined?(id)
        Shell.notify "warn: override definnition of Shell::Filter##{name}."
        Shell.notify "warn: alias Shell##{name} to Shell::Filter##{name}_org."
        Filter.module_eval "alias #{name}_org #{name}"
      end
      Shell.notify "method added: Shell::Filter##{name}.", Shell.debug?
      Filter.module_eval(%[def #{name}(*args, &block)
                            begin
                              self | @shell.__send__(:#{name}, *args, &block)
                            rescue Exception
                              $@.delete_if{|s| /:in `__getobj__'$/ =~ s} #`
                              $@.delete_if{|s| /^\\(eval\\):/ =~ s}
                            raise
                            end
                          end], __FILE__, __LINE__)
    end