Merge changes made in Gnus trunk

2012-03-22 Lars Magne Ingebrigtsen <larsi@gnus.org>
 * gnus.texi (Client-Side IMAP Splitting):
   Note that `nnimap-inbox' now can be a list.

2013-06-05 David Engster <deng@randomsample.de>
 * gnus-sum.el (gnus-update-marks): Do not remove empty 'unexist'
   ranges, since `nnimap-retrieve-group-data-early' also uses it as a flag
   to see whether the group was synced before.

2012-09-05 Martin Stjernholm <mast@lysator.liu.se>
 * nnimap.el (nnimap-request-move-article): Decode the group name when
   doing internal moves to avoid charset issues.

2012-09-05 Julien Danjou <julien@danjou.info>
 * nnimap.el (nnimap-request-list):
   Revert change that made listing synchronous.
   (nnimap-get-responses): Restore.

2012-08-31 Dave Abrahams <dave@boostpro.com>
 * nnimap.el (nnimap-change-group): Document result value.
 * nnimap.el (nnimap-find-article-by-message-id):
   Account for the fact that nnimap-change-group can return t.

2012-08-06 Julien Danjou <julien@danjou.info>
 * nnimap.el (nnimap-request-head):
   Resture to-buffer parameter, used by `nnimap-request-move-article'.
 * nnimap.el (nnimap-request-head): Remove to-buffer argument.
 * gnus-int.el (gnus-request-head): Remove to-buffer argument, only
   supported by nnimap actually. Reverts previous change.
 * gnus-int.el (gnus-request-head): Add an optional to-buffer parameter
   to mimic `gnus-request-article' and enjoy backends the nn*-request-head
   to-buffer argument that is already supported.

2012-07-24 Julien Danjou <julien@danjou.info>
 * nnimap.el (nnimap-get-responses): Remove, unused.

2012-06-25 Julien Danjou <julien@danjou.info>
 * nnimap.el (nnimap-request-articles-find-limit): Rename from
   `nnimap-request-move-articles-find-limit' since we do not use it
   only for move operations.
   (nnimap-request-accept-article):
   Use `nnimap-request-articles-find-limit' to limit search by message-id.

2012-06-19 Julien Danjou <julien@danjou.info>
 * nnir.el (nnir-run-imap): Fix, use `nnimap-change-group'.
 * nnimap.el (nnimap-log-buffer):
   Check that `window-point-insertion-type' is boundp, since it's not
   available in XEmacs.

2012-06-19 Michael Welsh Duggan <md5i@md5i.com>
 * nnimap.el (nnimap-log-buffer):
   Add this, setting `window-point-insertion-type' in the buffer to t.
   (nnimap-log-command): Use nnimap-log-buffer.

2012-06-19 Julien Danjou <julien@danjou.info>
 * nnimap.el (nnimap-find-article-by-message-id):
   Add an optional limit argument to be able to limit the search.
   (nnimap-request-move-article):
   Use `nnimap-request-move-articles-find-limit'.
   (nnimap-request-move-articles-find-limit):
   Add this to limit the search by Message-Id after a message move.
   (nnimap): Add defgroup.

2012-06-15 Julien Danjou <julien@danjou.info>
 * nnimap.el (nnimap-find-article-by-message-id):
   Use `nnimap-possibly-change-group' rather than its own EXAMINE call.
   (nnimap-possibly-change-group): Add read-only argument.
   (nnimap-request-list): Use nnimap-possibly-change-group rather than
   issuing EXAMINE manually.
   (nnimap-find-article-by-message-id):
   Use `nnimap-possibly-change-group' with read-only argument.
   (nnimap-change-group): Rename from `nnimap-possibly-change-group'.
   We cannot possibly change because we need to be sure that it's either
   read-write or read-only.

2012-06-10 Lars Magne Ingebrigtsen <larsi@gnus.org>
 * gnus-sum.el (gnus-summary-insert-old-articles):
   Don't include unexistent messages.

2012-04-10 Lars Magne Ingebrigtsen <larsi@gnus.org>
 * gnus-start.el (gnus-clean-old-newsrc):
   Remove totally bogus `unexists' entries.
   (gnus-clean-old-newsrc): Fix last checkin.
 * nnimap.el (nnimap-update-info):
   None of the articles below the active low-water mark exist.

2012-03-27 Katsumi Yamaoka <yamaoka@jpl.org>
 * nnimap.el (gnus-refer-thread-use-nnir): Silence the byte compiler.

2012-03-22 Sergio Martinez <samf0xb58@gmail.com> (tiny change)
 * nnimap.el (nnimap-request-scan):
   Allow `nnimap-inbox' to be a list of inboxes.

2012-03-10 Lars Magne Ingebrigtsen <larsi@gnus.org>
 * gnus-group.el (gnus-group-expire-articles-1):
   Don't try to expire messages that don't exist.
 * gnus-sum.el (gnus-summary-expire-articles): Ditto.

2012-02-20 Lars Ingebrigtsen <larsi@gnus.org>
 * gnus-start.el (gnus-clean-old-newsrc): Allow a FORCE parameter.

2012-02-15 Lars Ingebrigtsen <larsi@gnus.org>
 * gnus-start.el (gnus-clean-old-newsrc):
   Delete `unexist' from pre-Ma Gnus 0.3.

2012-02-15 Lars Ingebrigtsen <larsi@gnus.org>
 * gnus-sum.el (gnus-summary-local-variables):
   Make `gnus-newsgroup-unexist' into a local variable.

2012-02-11 Lars Ingebrigtsen <larsi@gnus.org>
 * gnus-sum.el (gnus-adjust-marked-articles):
   Add to `gnus-newsgroup-unexist'.
 * gnus.el (gnus-article-mark-lists):
   Add `unexist' to the list of marks.
   (gnus-article-special-mark-lists):
   Put the `unexist' in the special marks list instead.
 * gnus-sum.el (gnus-articles-to-read): Don't include unexisting
   articles in the list of articles to be selected.
 * nnimap.el (nnimap-retrieve-group-data-early):
   Query for unexisting articles.
   (nnimap-update-info): Keep track of unexisting articles.
   (nnimap-update-qresync-info): Ditto.

2012-02-01 Lars Ingebrigtsen <larsi@gnus.org>
 * gnus-start.el (gnus-clean-old-newsrc): New function.
   (gnus-read-newsrc-file): Use it.

lisp/gnus/gnus-start.el

@@ -2301,7 +2301,27 @@ If FORCE is non-nil, the .newsrc file is read."
 	  (gnus-message 5 "Reading %s...done" newsrc-file)))
 
       ;; Convert old to new.
-      (gnus-convert-old-newsrc))))
+      (gnus-convert-old-newsrc)
+      (gnus-clean-old-newsrc))))
+
+(defun gnus-clean-old-newsrc (&optional force)
+  (when gnus-newsrc-file-version
+    ;; Remove totally bogus `unexists' entries.  The name is
+    ;; `unexist'.
+    (dolist (info (cdr gnus-newsrc-alist))
+      (let ((exist (assoc 'unexists (gnus-info-marks info))))
+	(when exist
+	  (gnus-info-set-marks
+	   info (delete exist (gnus-info-marks info))))))
+    (when (or force
+	      (< (gnus-continuum-version gnus-newsrc-file-version)
+		 (gnus-continuum-version "Ma Gnus v0.03")))
+      ;; Remove old `exist' marks from old nnimap groups.
+      (dolist (info (cdr gnus-newsrc-alist))
+	(let ((exist (assoc 'unexist (gnus-info-marks info))))
+	  (when exist
+	    (gnus-info-set-marks
+	     info (delete exist (gnus-info-marks info)))))))))
 
 (defun gnus-convert-old-newsrc ()
   "Convert old newsrc formats into the current format, if needed."