[Zope] zope, latin-1 and accented words

How could I can tell the Splitter of ZCText intedex to not split words as "aaaèbbb" in "aaa" and "bbb"? I would like to tell zope that è,à and so on are alphanumeric letters... In Splitter.c I have: class Splitter: import re rx = re.compile(r"(?L)\w+") ?L match "as the locale", but I have multilingual latin-1 contents... \w would match only [a..z,A..Z]! TIA P.S. I've written a small Class for the ZCTextindex pipeline that convert all the accented characters in non accented ones, so I can index "perchè" as "perche". It would work only if I can solve this splitter problem...