I merged all the new features and latest v1.1 changes under one tree:
http://hg.dovecot.org/dovecot-1.2/
The changeset order is kind of weird though. The timestamps jump all around. Wonder if there's a way to reorder them so that it looks more sane..
The status of the new features:
- CONDSTORE extension is probably the largest change. It adds new "modification sequences" for messages that increase whenever the message's metadata changes.
I'll probably have to reimplement the way modseqs are calculated, because modseqs will be very useful when implementing replication and the current way just doesn't work with it. If modseq-supporting clients see the current modseqs and later the server gets upgraded to new modseqs, the clients will most likely break. So this change should be done for v1.2.
QRESYNC, ESEARCH, SEARCHRES and WITHIN extensions are fully implemented. QRESYNC might need some cleanups and optimizations though.
CONTEXT=SEARCH extension is fully implemented, but could use a few optimizations (caching PARTIAL and CONTEXT searches, maybe others too).
Virtual mailboxes should work fast after mailbox is opened. The initial opening could use several optimizations though. It could probably share some code with QRESYNC to avoid the full initial search (storing each backend's modseq to index header). Also if search parameters don't contain any dynamically changing data, there's no point in searching the old messages.
The current design doesn't allow changing the search parameters or list of mailboxes, otherwise it breaks more or less badly. I guess I could add code to check if the dovecot-virtual file's mtime has changed and if so make it do a full resync. This anyway means that there's no way to support wildcard mailbox names (e.g. "all mailboxes"). But does anyone really want that (yet)? It'll anyway be faster/easier to implement once mailbox list indexes are implemented.
I'll still have to add a new X-MAILBOX search parameter which can be used to test what the backend mailbox name is. This will be especially useful with INTHREAD extension. I guess it wouldn't hurt to have FETCH X-MAILBOX if someone wants it.
Thread indexes should work, but some optimizations missing and there are some small bugs left. X-REFERENCES2 thread algorithm works.
INTHREAD extension isn't started yet, but I'll start it soon. Hopefully won't be too tricky to get it working with virtual mailboxes and CONTEXT=SEARCH..