Sort strings while handling accentuated characters correctly

sort-noaccent.rb

#!/usr/bin/ruby -w
# -*- coding: None -*-
# vim: sw=2 sts=2:

# Tri sans accents

$KCODE = 'u'

class String
  def no_accent
    require 'rubygems'
    require 'unicode'

    Unicode.normalize_KD(self).unpack('U*').select{ |cp|
      cp < 0x0300 || cp > 0x036F
    }.pack('U*')
  end
end

p ["az","aea","aéb"].sort { |x, y| x.no_accent <=> y.no_accent }