[O] org-gnus-follow-link and nnimap-request-scan

[Eden Cardim]

After switching to using gnus mail splitting, following links to nnimap
messages has become very slow. I'm fairly familiar with the gnus source,
but not org-mode's as much, after wading a bit in the source I landed on 
,----[ org-gnus-follow-link ]
|        (gnus-activate-group group t)
`----
,----[ C-h f gnus-activate-group RET ]
| gnus-activate-group is a compiled Lisp function in `gnus-start.el'.
| 
| (gnus-activate-group GROUP &optional SCAN DONT-CHECK METHOD DONT-SUB-CHECK)
| 
| Check whether a group has been activated or not.
| If SCAN, request a scan of that group as well.
| 
| [back]
`----
which ends up invoking
,----
| (deffoo nnimap-request-scan (&optional group server)
|   (when (and (nnimap-possibly-change-group nil server)
|            nnimap-inbox
|            nnimap-split-methods)
|     (nnheader-message 7 "nnimap %s splitting mail..." server)
|     (nnimap-split-incoming-mail)))
`----
Which is certainly dispensable for visiting articles via nnimap.
Switching to
,----[ org-gnus-follow-link ]
|        (gnus-activate-group group nil)
`----
Makes the linked articles appear nearly instantly.

Am I missing something here?

-- 
Eden Cardim
Software Engineer
edencardim.com
+55 73 9986-3963