Re: nnimap and searching articles by message-id

[Reiner Steib <reinersteib+gmane@imap.cc>]

On Sat, Sep 19 2009, Peter wrote:

> It turns out that the IMAP server I am using 

Which IMAP server software is it?

> requires the message-id be stripped of the enclosing angle brackets
> when searching for messages like so:
>
> UID SEARCH HEADER Message-Id "xxxx.yyyy@foobar.com"
>
> Not sure who is not compliant here: Gnus/nnimap or the IMAP server?

Cc-ing the developer list.  Maybe someone there knows.

> I found that gnus-summary-refer-article and gnus-article-refer-article
> could be modified to suppress the angle brackets.  That doesn't seem to
> be the right solution however as I would think the fix needs to be made in
> nnimap.el instead.  Can anybody suggest a proper way to resolve the
> problem while allowing for article referencing by message-id when
> reading news through nntp and email through imap?

Here's a preliminary, untested patch.  Does it work for you?

--8<---------------cut here---------------start------------->8---
--- nnimap.el	30 Jan 2009 18:32:29 +0100	7.59
+++ nnimap.el	19 Sep 2009 11:09:02 +0200	
@@ -252,6 +252,15 @@
   :type 'boolean
   :group 'nnimap)
 
+(defcustom nnimap-search-mid-strip-angles t ;; nil
+  "Strip angles around Message-ID search.
+
+Some non-compliant (???) IMAP servers require to strip the angles
+around Message-ID when doing an UID SEARCH."
+  :version "23.2" ;; No Gnus 0.12
+  :group 'nnimap
+  :type '(choice boolean))
+
 (defvoo nnimap-need-unselect-to-notice-new-mail t
   "Unselect mailboxes before looking for new mail in them.
 Some servers seem to need this under some circumstances.")
@@ -654,7 +663,10 @@
 			   articles)))))
       (mapcar (lambda (msgid)
 		(imap-search
-		 (format "HEADER Message-Id \"%s\"" msgid)))
+		 (format "HEADER Message-Id \"%s\""
+			 (if nnimap-search-mid-strip-angles
+			     (gnus-replace-in-string msgid "[<>]" "")
+			   msgid))))
 	      articles))))
 
 (defun nnimap-group-overview-filename (group server)
--8<---------------cut here---------------end--------------->8---

Bye, Reiner.
-- 
       ,,,
      (o o)
---ooO-(_)-Ooo---  |  PGP key available  |  http://rsteib.home.pages.de/