# File rexml/functions.rb, line 230
    def Functions::normalize_space( string=nil )
      string = string(@@node) if string.nil?
      if string.kind_of? Array
	string.collect{|x| string.to_s.strip.gsub(/\s+/um, ' ') if string}
      else
	string.to_s.strip.gsub(/\s+/um, ' ')
      end
    end