dovecot - Apr 2015 - Potentially breaking dict-proxy (dict-sql) backwards compatibility

Looks like the dict-proxy code doesn't currently do escaping newlines
properly, but it still accidentally happens to work, because the data is stored
in the escaped form. I'm thinking about fixing this, but this might break
somebody's existing dict usage. But then again maybe nobody is actually
using it now, especially because it hasn't been working exactly as expected.
So, can anybody tell me if they're currently using a combination of:

 - dict proxy (especially to dict sql)
 - containing values which can contain LFs (or TABs)

I guess this mainly means storing Sieve scripts or IMAP METADATA to SQL. Or
maybe somebody is using dict (via proxy) for their own purposes?..