All, My patch to support the Range header is now on trunk. Attachments are upgraded for efficient seeking on compaction and do not support the Range header until that happens. "Accept-Ranges: none" is returned for non seekable attachments and "Accept-Ranges: bytes" is returned for the new style ones.
I inspect #att.data in couch_http_db which I've marked as a layering violation. I've also modified couch_stream.erl and couch_file.erl so it needs careful review. B.
