The attached patch suppresses a compiler warning in org-gnus.el
* lisp/org-gnus.el:
Suppress compiler warning by declaring outside function
nnimap-retrieve-headers-from-file.
David Maus <dmaus@ictsoc.de> writes:
Hi David,
>>I'm trying to add a workaround to org-gnus.el which should save the
>>slowness of querying the IMAP server by looking up the article number
>>in the group's .overview file. But since I don't have nnimap groups,
>>we have to play some question & answer game. ;-)
>
>>Please apply this patch and set
>>`org-gnus-nnimap-query-article-no-from-file' to t.
>
> The patch does not work: It calls `nnimap-retrieve-headers-from-file'
> without the required arguments (group server)
Argh, stupid me! Here's a corrected patch.
--8<---------------cut here---------------start------------->8---
--8<---------------cut here---------------end--------------->8---
> and the headers are not fetched because
> `nnimap-retrieve-headers-from-file' looks for a NOV cache file, not
> .overview.
Aren't overview file and NOV file synonyms?
Hm, anyway. In the Gnus docs I've found this paragraph:
,----[ (info "(gnus)IMAP") ]
| `nnimap-nov-is-evil'
| Never generate or use a local NOV database. Defaults to the value
| of `gnus-agent'.
|
| Using a NOV database usually makes header fetching much faster,
| but it uses the `UID SEARCH UID' command, which is very slow on
| some servers (notably some versions of Courier). Since the Gnus
| Agent caches the information in the NOV database without using the
| slow command, this variable defaults to true if the Agent is in
| use, and false otherwise.
`----
So maybe we're trying to replace one slow command with another slow
command. Especially, the fact that Courier is explicitly mentioned is a
bit frustrating. Well, let's try it out and see if it helps a bit.
> Alas: I couldn't figure out how to enable NOV cache for my nnimap
> group. Setting `nnimap-nov-is-evil' to nil didn't help.
This variable defaults to the value of `gnus-agent', so I assume the
agent has to be enabled (which is default), and most probably the IMAP
server has to be agentized as well. That can be done in the server
buffer (`^' in *Group*), and then:
,----[ (info "(gnus)Server Agent Commands") ]
| `J a'
| Add the current server to the list of servers covered by the Gnus
| Agent (`gnus-agent-add-server').
`----
Bye,
Tassilo
