dovecot - Apr 2012 - Sieve pipe extension - can it retur something?

I have a question about sieve pipe: can it return something to further
processing?
For example in procmail I can do:
--8<---------------cut here---------------start------------->8---
:0
VIRUS=`$CLAMSCAN --mbox --disable-summary --stdout -`
--8<---------------cut here---------------end--------------->8---
and then test VIRUS variable.

Maybe I missing something, when read
http://hg.rename-it.nl/pigeonhole-0.2-sieve-pipe/raw-file/tip/doc/rfc/spec-bosch-sieve-pipe.txt

KJ

-- 
http://sporothrix.wordpress.com/2011/01/16/usa-sie-krztusza-kto-nastepny/
Gloffing is a state of mine.

Op 4/14/2012 2:13 PM, Kamil Jo?ca schreef:
>
> I have a question about sieve pipe: can it return something to further
> processing?
> For example in procmail I can do:
> --8<---------------cut here---------------start------------->8---
> :0
> VIRUS=`$CLAMSCAN --mbox --disable-summary --stdout -`
> --8<---------------cut here---------------end--------------->8---
> and then test VIRUS variable.
>
> Maybe I missing something, when read
>
http://hg.rename-it.nl/pigeonhole-0.2-sieve-pipe/raw-file/tip/doc/rfc/spec-bosch-sieve-pipe.txt
For Pigeonhole 0.3/Dovecot 2.1 there is a new plugin called ExtPrograms. 
Apart from the 'pipe' extension it adds the 'execute' extension
that
should match just what you want:

http://hg.rename-it.nl/pigeonhole-0.3-sieve-extprograms/raw-file/d4683490a878/doc/rfc/spec-bosch-sieve-extprograms.txt

Regards,

Stephan.