Re: IMAP article move

[Simon Josefsson <jas@extundo.com>]

"Ted Zlatanov" <tzz@lifelogs.com> writes:

> Can we optimize IMAP article moves so they use the server
> capabilities?  Right now, I think, we just copy and then delete the
> old article.  Across various backends that makes sense, but if it's
> within the same IMAP backend, the server move can be much faster.
>
> I looked at gnus-sum.el, gnus-int.el, and nnimap.el.  It seems
> possible, although the changes would have to go all the way to the
> top, because gnus-summary-move-article does the copy & delete action.
>
> If this works, Gnus will be much faster and more reliable in the
> common case of article moves in IMAP.

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?