# File rexml/doctype.rb, line 20 def write(output) output << " #{@id_type}" if @public_id_literal if @public_id_literal.include?("'") quote = "\"" else quote = @default_quote end output << " #{quote}#{@public_id_literal}#{quote}" end if @system_literal if @system_literal.include?("'") quote = "\"" elsif @system_literal.include?("\"") quote = "'" else quote = @default_quote end output << " #{quote}#{@system_literal}#{quote}" end end