[Dovecot] How can i set vacation subject in non-english characters?

Hi, all.

I have implemented vacation via dovecot sieve. but how can i use non-english characters in vacation subject?

Thanks very much.

This is my sample sieve rule for vacation:

----8<---- require ["vacation"];

vacation :days 1 :mime :subject "Auto-Reply: Out of office." "MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit

I can use non-english character here as mail body, wrote in utf-8. "; ----8<----

-- Best Regards.

Zhang Huangbin

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