[Dovecot] Combining ManageSieve with hand-written scripts

[Jason Bleazard]

Hi, new to Dovecot, forgive me if I'm missing something basic...

I'm trying to figure out if there's a way to use a couple of custom rules
alongside ManageSieve.  Most of the time I like the ManageSieve interface
in Roundcube, but there's one rule that I can't get it to do the way I want
(it's a notify rule, and I don't like the way Roundcube constructs the
notify).  I figured out how to write it by hand, but of course I can't put
my own rules in Roundcube's file or it gets really confused.  I tried
adding an include to the generated file, but Roundcube politely removes it
for me the next time I use the rule editor.  (Squirrelmail doesn't seem to
be any better in this regard.)

I thought I could do something like 
    sieve_before = ~/sieve/custom.sieve

but that doesn't seem to work.  I couldn't even see any evidence in the
log that it attempted to look at that file.  Apparently sieve_before isn't
meant to work on a per-user basis.

If I do a global sieve_before, can I have it "include :personal"?  If so,
what's going to happen with the script compilation?  From what I
understand, it can't be compiled globally, since each user has a different
custom rule set.

Am I trying to do the impossible here?

Thanks for any ideas,
Jason Bleazard