[Boost-users] Regex Localization problem

Hi, I have a portability problem with regex (probably due to localization issues). I've found that, under Win32, the regular expression "\w" matches all the alphanumeric chars, including non ascii ones (such as e grave or e acute). This doesn't hold while under linux. In fact, \w only seems to match ascii characters. I've tried chancing the locale, but nothing changed. Is there a way to make \w have on linux the same behaviour it has on win32? Thanks in advance.