Improving slugify

I've added a new filter:

var input = ÁÉÍÓÚáéíóúÀÈÌÒÙàèìòù;
var output1 = $filter('pmkr.removeDiacritics')(input); // AEIOUaeiouAEIOUaeiou

Combining with slugify:
var output2  = $filter('pmkr.slugify')(output1); // aeiouaeiouaeiouaeiou