I've created a dict service that listens on a unix socket and answers queries for sieve scripts (among other things).
As I understand it (from the source code at http://hg.dovecot.org/dovecot-2.2/file/tip/src/lib-dict/dict-client.c), the dict client will unescape \001n, \001t, and \0011 to line feeds, tabs, and the \001 character respectively.
In my service I am escaping those three characters in my response (if I don't escape them the line-oriented nature of the protocol causes a failure for multiline sieve scripts) but every time LDA attempts to process a sieve script I get an error in the logs (see below) showing sieve choking on \001 characters.
Is there some configuration value I've missed or something?
*dovecot log* Nov 8 23:04:54 www dovecot: lmtp(29940, josh@redacted.com): pxg7JxZufVL0dAAAPhZyyg: sieve: failed to compile script dict:proxy:/var/run/dovecot-auth.sock:sieve;name=main script (view user logfile /var/mail/vhosts/redacted.com/josh/.dovecot.sieve.log for more information)
*.dovecot.sieve.log* sieve: info: started log at Nov 08 16:14:38. main script: line 1: error: unexpected character(s) starting with 0x01. main script: line 1: error: unexpected unknown characters found at (the presumed) end of file. main script: error: parse failed.