[Dovecot] How can i get original mail subject in sieve vacation?

[Zhang Huangbin]

Hi, all.

I want to mix some new words and original mail subject as vacation
subject, how can i get original mail subject in sieve vacation?

Original subject: Hello.
Vacation subject: Auto-Reply msg: Hello.
                 ^^^^^ New ^^^^^ ^Orig^

Thanks very much.

--
Best Regards.

Zhang Huangbin

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 http://iRedMail.googlecode.com/