A regExp with unicode chars

latinRegExp.js

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 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
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RegExp.createLatinRegExp = (function() {
	var LATIN_CHRS = [
		'AÃÁÄÂÀ'.split('').join('|'),
		'aáäâàãå'.split('').join('|'),
		'CÇ'.split('').join('|'),
		'cç'.split('').join('|'),
		'DÐ'.split('').join('|'),
		'dð'.split('').join('|'),
		'EÉÈËÊ'.split('').join('|'),
		'eéèëê'.split('').join('|'),
		'IÏÎÌÍ'.split('').join('|'),
		'iïîìí'.split('').join('|'),
		'NÑ'.split('').join('|'),
		'nñ'.split('').join('|'),
		'OÕÖÔÒÓØ'.split('').join('|'),
		'oöôòóõø'.split('').join('|'),
		'UÜÛÙÚ'.split('').join('|'),
		'uüûùú'.split('').join('|'),
		'YŸÝ\u00A5'.split('').join('|'),
		'yÿý'.split('').join('|'),
		['AE','Æ'].join('|'),
		['ae','æ'].join('|'),
		['OE','ŒŒ\u008C'].join('|'),
		['oe','œ\u009C'].join('|'),
		['ss','ß'].join('|')
	],
	LATIN_REGEXP = new RegExp(LATIN_CHRS.join('|'));
	
	return function(pattern, flags) {
		return new RegExp(
			pattern.replace(LATIN_REGEXP, function(match) {
				for(var i=LATIN_CHRS.length-1; i>=0; i--) {
					if(-1!==LATIN_CHRS[i].indexOf(match)) {
						return '(?:'+LATIN_CHRS[i]+')';
					}
				}
			}) , flags);
	};
})();