Re: nnimap does not create non-existent groups on expiry (lost mail)

[Simon Josefsson <jas@extundo.com>]

Nevin Kapur <nevin@jhu.edu> writes:

> I've made the following naive change and now nonexistent groups do get
> created on expiry.  Is this the right thing to do?  If so, would
> someone apply the patch?

In theory it is the right thing, but various IMAP server bugs make the
TRYCREATE stuff unreliable, so with your patch I believe nnimap would
have sent a CREATE command for every expired article (which would have
failed in the normal case).  Does the following work instead?  It also
has the feature that no articles are expired if the group could not be
created.  Thanks for debugging this.

Index: nnimap.el
===================================================================
RCS file: /usr/local/cvsroot/gnus/lisp/nnimap.el,v
retrieving revision 6.56
diff -u -p -u -w -r6.56 nnimap.el
--- nnimap.el	2002/12/28 18:52:55	6.56
+++ nnimap.el	2003/01/06 23:08:26
@@ -1341,7 +1344,8 @@ function is generally only called when G
 		imap-current-message))
 
 (defun nnimap-expiry-target (arts group server)
-  (unless (eq nnmail-expiry-target 'delete)
+  (when (and (not (eq nnmail-expiry-target 'delete))
+	     (nnimap-request-create-group group server))
     (with-temp-buffer
       (dolist (art arts)
 	(nnimap-request-article art group server (current-buffer))