# File lib/html5/tokenizer.rb, line 914
    def doctype_system_identifier_single_quoted_state
      data = @stream.char
      if data == "'"
        @state = :after_doctype_system_identifier_state
      elsif data == :EOF
        @token_queue << {:type => :ParseError, :data => "eof-in-doctype"}
        @current_token[:correct] = false
        @token_queue << @current_token
        @state = :data_state
      else
        @current_token[:systemId] += data
      end
      return true
    end