I really need to get WordPress to "sanitize" them and replace them with S, s, T, t when it creates post slugs.
I know the code for this is in wp-includes/formatting.php and it's the "remove_accents" function, but I can't for the life of me figure how these letters decompose into chr(int).chr(int), and I would really love to find out since I'd like to have these diacritics included in that list.