sieve and accented chars

[Andreas]

I was wondering if anybody else has this problem with sieve:
https://bugzilla.andrew.cmu.edu/show_bug.cgi?id=2455

cyrus-imapd-2.2.8

I'm having a problem with Sieve when it encounters text with accented characters.
For example:

if header :contains "Subject" "[My_filter]" {
	        fileinto "INBOX.myfilter";
}

An email with subject "[My_filter] Hello!" will match, but not "[My_filter] Olá!".

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