read_with_substitution (REXML::Text)

    # File src/rexml/text.rb, line 199
                    def Text::read_with_substitution( input, illegal=nil )
                            copy = input.clone

                            if copy =~ illegal
                                    raise ParseException.new( "malformed text: Illegal character #$& in \"#{copy}\"" )
                            end if illegal

                            copy.gsub!( /\r\n?/, "\n" )
                            if copy.include? ?&
                                    copy.gsub!( SETUTITSBUS[0], SLAICEPS[0] )
                                    copy.gsub!( SETUTITSBUS[1], SLAICEPS[1] )
                                    copy.gsub!( SETUTITSBUS[2], SLAICEPS[2] )
                                    copy.gsub!( SETUTITSBUS[3], SLAICEPS[3] )
                                    copy.gsub!( SETUTITSBUS[4], SLAICEPS[4] )
                                    copy.gsub!( /&#0*((?:\d+)|(?:x[a-f0-9]+));/ ) {|m|
                                            m=$1
                                            #m='0' if m==''
                                            m = "0#{m}" if m[0] == ?x
                                            [Integer(m)].pack('U*')
                                    }
                            end
                            copy
                    end