Is sanitize_title_with_dashes formatting function too liberal (in terms of accepted characters)?

Consider this function as a rough placeholder. It has more flaws than you might imagine … 🙂
There are many plugins to improve the conversion for different languages and needs. You may take a look at my plugin Germanix to see how this could be done.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)