gistfile1

//extend MooTools.lang to add support for pluralization..
(function(){
	$extend(MooTools.lang, {
    pluralise: function(key, delta) {
      return this.get('Translations', 'pluralise', [key, delta]).substitute({delta: delta});
    }
	});
})();

MooTools.lang.set('en-US', 'Translations', {
  //each pluralise function is specific to the language
  // e.g. polish would have a different function as it has multiple plural forms
  pluralise: function(key, delta) {
    if (delta <= 1) return MooTools.lang.get('Translations', key)['n' + delta];
    return MooTools.lang.get('Translations', key)['n'];
  },  
	minutesAgo: {n0: 'zero minutes ago', n1: 'a minute ago', n:'{delta} minutes ago'}
});	

>>> MooTools.lang.pluralise('minutesAgo', 0);
"zero minutes ago"
>>> MooTools.lang.pluralise('minutesAgo', 1);
"a minute ago"
>>> MooTools.lang.pluralise('minutesAgo', 2);
"2 minutes ago"