This minor update (v3.12) better handles rogue input, such as files with lots of tabs, or with combining diacritics which immediately follow punctuation, spaces, or other unruly combinations. PrimerPrep is intented to process nice text files that contain just a single language, usually a variety of stories or texts. If you throw unruly files at it, you may get unexpected results! If you manage to throw a file at PrimerPrep and it stops working, then please send us the file, and we will try to make the program even more robust.