This module improves non-ascii filename interoperability of apache (and mod_dav).

it seems many webdav clients send filename in its platform-local encoding. but since mod_dav expects everything, even http request line, to be in utf-8, this causes an interoperability problem.

i believe this is a future issue for specification (rfc?) to standardize encoding used in http request-line and http header, but life would be much easier if mod_dav (and others) can handle various encodings sent by clients, today. this module does just that.