Re: IMAP article move

["Ted Zlatanov" <tzz@lifelogs.com>]

On Mon, 08 Nov 2004, jas@extundo.com wrote:

> What are you proposing?  There is some optimization in
> nnimap-request-move-article and nnimap-request-accept-article to make
> moving more efficient, and I thought it was pretty fast.  But I rarely
> copy/move articles, so I wouldn't know.  Maybe you could illustrate by
> comparing which IMAP commands are sent now, and which commands you
> want to be sent?

I apologize.  Reading the source code, I thought that the IMAP COPY
(imap-message-copy) was not used, but it is.  There does seem to be an
unnecessary full-body FETCH before the COPY, though, which is what
slows things down (I think).  I just entered the group and did a `B m'
command, and the log showed that the article was fetched in its full
glory before it was moved.

I think this is something that Gnus does for every backend when
moving, because it's needed in some cases (where you don't do the
internal backend move but a fetch+store instead).  So the extra fetch
just needs to be eliminated when moving within the same IMAP server.

nnml and nnmaildir could probably benefit from the same optimization,
if they do a file move internally as well.

Ted