sieve and utf-8 MIME/base64 content

[Eugene M. Zheganin]

Hi,


I'm using sieve with cyrus to sort incoming mail, and it works perfectly 
with latin symbols. But what if I need to sort out the mail that has all 
sorts utf-8 sumbols in it ? Like MIME-encoded headers and base64 
-encoded body ? I've read in the RFC that implementation should support 
this, what about cyrus-imapd sieve implementation ? I'm using 2.5 
version, so, if anyone has some information about this - please let me 
know. Official documentation seems to be lacking this.


Thanks.

Eugene.