# File htree/output.rb, line 168 def generate_content result = '' if @public_identifier result << "PUBLIC \"#{@public_identifier}\"" else result << "SYSTEM" end # Although a system identifier is not omissible in XML, # we cannot output it if it is not given. if @system_identifier if /"/ !~ @system_identifier result << " \"#{@system_identifier}\"" else result << " '#{@system_identifier}'" end end result end