String extensions in ruby (rails initializers...)

string_extensions.rb

# -*- encoding : utf-8 -*-
module StringExtensions
  def sanitize(options = {})
    Sanitize.clean(self, options)
  end

  def downcase_with_accent_support
    self.
        downcase.
        tr("À", "à").
        tr("Á", "á").
        tr("Â", "â").
        tr("Ã", "ã").
        tr("Ä", "ä").
        tr("È", "è").
        tr("É", "é").
        tr("Ê", "ê").
        tr("Ë", "ë").
        tr("Ì", "ì").
        tr("Í", "í").
        tr("Î", "î").
        tr("Ï", "ï").
        tr("Ò", "ò").
        tr("Ó", "ó").
        tr("Ô", "ô").
        tr("Õ", "õ").
        tr("Ö", "ö").
        tr("Ù", "ù").
        tr("Ú", "ú").
        tr("Û", "û").
        tr("Ü", "ü").
        tr("Ç", "ç")
  end

  def titleize_with_accent_support
    tmp = self.
            gsub(/-/, '{{dash}}').
            downcase_with_accent_support.
            titleize.
            gsub('{{Dash}}', '-').
            gsub(/(^|\s)à/, "\\1À").   # à => À
            gsub(/(^|\s)á/, "\\1Á").   # á => Á
            gsub(/(^|\s)â/, "\\1Â").   # â => Â
            gsub(/(^|\s)ã/, "\\1Ã").   # ã => Ã
            gsub(/(^|\s)ä/, "\\1Ä").   # ä => Ä
            gsub(/(^|\s)è/, "\\1È").
            gsub(/(^|\s)é/, "\\1É").
            gsub(/(^|\s)ê/, "\\1Ê").
            gsub(/(^|\s)ë/, "\\1Ë").
            gsub(/(^|\s)ì/, "\\1Ì").
            gsub(/(^|\s)í/, "\\1Í").
            gsub(/(^|\s)î/, "\\1Î").
            gsub(/(^|\s)ï/, "\\1Ï").
            gsub(/(^|\s)ò/, "\\1Ò").
            gsub(/(^|\s)ó/, "\\1Ó").
            gsub(/(^|\s)ô/, "\\1Ô").
            gsub(/(^|\s)õ/, "\\1Õ").
            gsub(/(^|\s)ö/, "\\1Ö").
            gsub(/(^|\s)ù/, "\\1Ù").
            gsub(/(^|\s)ú/, "\\1Ú").
            gsub(/(^|\s)û/, "\\1Û").
            gsub(/(^|\s)ü/, "\\1Ü").
            gsub(/(^|\s)ç/, "\\1Ç")
        
  #   tmp.gsub(/(\xC3[\xA0\xA1\xA2\xA3\xA9\xAA\xAD\xB3\xB4\xB5\xBA\xBC\xA7\x80\x81\x82\x83\x89\x8A\x8D\x93\x94\x95\x9A\x9C\x87])([A-Z])/) do 
  #     $1 + $2.downcase
  #   end
  end             

 def no_accent
   self.
        tr("ÀÁÂÃÄ", "A")
        tr("ÈÉÊË",  "E").
        tr("ÌÍÎÏ",  "I").
        tr("ÒÓÔÕÖ", "O").
        tr("ÙÚÛÜ",  "U").
        tr("Ç",     "C").
        tr("àáâãä", "a").
        tr("èéêë",  "e").
        tr("ìíîï",  "i").
        tr("òóôõö", "o").
        tr("ùúûü",  "u").
        tr("ç",     "c")
  end
  
  alias :unaccent :no_accent
  
end

String.send(:include, StringExtensions)