[Emacs-diffs] Changes to emacs/lisp/gnus/nnbabyl.el [gnus-5_10-branch]

[Andreas Schwab]

Index: emacs/lisp/gnus/nnbabyl.el
diff -c /dev/null emacs/lisp/gnus/nnbabyl.el:1.6.2.1
*** /dev/null   Thu Jul 22 16:47:09 2004
--- emacs/lisp/gnus/nnbabyl.el  Thu Jul 22 16:45:51 2004
***************
*** 0 ****
--- 1,672 ----
+ ;;; nnbabyl.el --- rmail mbox access for Gnus
+ 
+ ;; Copyright (C) 1995, 1996, 1997, 1998, 1099, 2000, 2001
+ ;;    Free Software Foundation, Inc.
+ 
+ ;; Author: Lars Magne Ingebrigtsen <address@hidden>
+ ;;    Masanobu UMEDA <address@hidden>
+ ;; Keywords: news, mail
+ 
+ ;; This file is part of GNU Emacs.
+ 
+ ;; GNU Emacs is free software; you can redistribute it and/or modify
+ ;; it under the terms of the GNU General Public License as published by
+ ;; the Free Software Foundation; either version 2, or (at your option)
+ ;; any later version.
+ 
+ ;; GNU Emacs is distributed in the hope that it will be useful,
+ ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+ ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ ;; GNU General Public License for more details.
+ 
+ ;; You should have received a copy of the GNU General Public License
+ ;; along with GNU Emacs; see the file COPYING.  If not, write to the
+ ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ ;; Boston, MA 02111-1307, USA.
+ 
+ ;;; Commentary:
+ 
+ ;; For an overview of what the interface functions do, please see the
+ ;; Gnus sources.
+ 
+ ;;; Code:
+ 
+ (require 'nnheader)
+ (condition-case nil
+     (require 'rmail)
+   (t (nnheader-message
+       5 "Ignore rmail errors from this file, you don't have rmail")))
+ (require 'nnmail)
+ (require 'nnoo)
+ (eval-when-compile (require 'cl))
+ 
+ (nnoo-declare nnbabyl)
+ 
+ (defvoo nnbabyl-mbox-file (expand-file-name "~/RMAIL")
+   "The name of the rmail box file in the users home directory.")
+ 
+ (defvoo nnbabyl-active-file (expand-file-name "~/.rmail-active")
+   "The name of the active file for the rmail box.")
+ 
+ (defvoo nnbabyl-get-new-mail t
+   "If non-nil, nnbabyl will check the incoming mail file and split the mail.")
+ 
+ 
+ (defvoo nnbabyl-prepare-save-mail-hook nil
+   "Hook run narrowed to an article before saving.")
+ 
+ 
+ 
+ (defvar nnbabyl-mail-delimiter "\^_")
+ 
+ (defconst nnbabyl-version "nnbabyl 1.0"
+   "nnbabyl version.")
+ 
+ (defvoo nnbabyl-mbox-buffer nil)
+ (defvoo nnbabyl-current-group nil)
+ (defvoo nnbabyl-status-string "")
+ (defvoo nnbabyl-group-alist nil)
+ (defvoo nnbabyl-active-timestamp nil)
+ 
+ (defvoo nnbabyl-previous-buffer-mode nil)
+ 
+ (eval-and-compile
+   (autoload 'gnus-set-text-properties "gnus-ems"))
+ 
+ 
+ 
+ ;;; Interface functions
+ 
+ (nnoo-define-basics nnbabyl)
+ 
+ (deffoo nnbabyl-retrieve-headers (articles &optional group server fetch-old)
+   (save-excursion
+     (set-buffer nntp-server-buffer)
+     (erase-buffer)
+     (let ((number (length articles))
+         (count 0)
+         (delim (concat "^" nnbabyl-mail-delimiter))
+         article art-string start stop)
+       (nnbabyl-possibly-change-newsgroup group server)
+       (while (setq article (pop articles))
+       (setq art-string (nnbabyl-article-string article))
+       (set-buffer nnbabyl-mbox-buffer)
+       (end-of-line)
+       (when (or (search-forward art-string nil t)
+                 (search-backward art-string nil t))
+         (unless (re-search-backward delim nil t)
+           (goto-char (point-min)))
+         (while (and (not (looking-at ".+:"))
+                     (zerop (forward-line 1))))
+         (setq start (point))
+         (search-forward "\n\n" nil t)
+         (setq stop (1- (point)))
+         (set-buffer nntp-server-buffer)
+         (insert "221 ")
+         (princ article (current-buffer))
+         (insert " Article retrieved.\n")
+         (insert-buffer-substring nnbabyl-mbox-buffer start stop)
+         (goto-char (point-max))
+         (insert ".\n"))
+       (and (numberp nnmail-large-newsgroup)
+            (> number nnmail-large-newsgroup)
+            (zerop (% (incf count) 20))
+            (nnheader-message 5 "nnbabyl: Receiving headers... %d%%"
+                              (/ (* count 100) number))))
+ 
+       (and (numberp nnmail-large-newsgroup)
+          (> number nnmail-large-newsgroup)
+          (nnheader-message 5 "nnbabyl: Receiving headers...done"))
+ 
+       (set-buffer nntp-server-buffer)
+       (nnheader-fold-continuation-lines)
+       'headers)))
+ 
+ (deffoo nnbabyl-open-server (server &optional defs)
+   (nnoo-change-server 'nnbabyl server defs)
+   (nnbabyl-create-mbox)
+   (cond
+    ((not (file-exists-p nnbabyl-mbox-file))
+     (nnbabyl-close-server)
+     (nnheader-report 'nnbabyl "No such file: %s" nnbabyl-mbox-file))
+    ((file-directory-p nnbabyl-mbox-file)
+     (nnbabyl-close-server)
+     (nnheader-report 'nnbabyl "Not a regular file: %s" nnbabyl-mbox-file))
+    (t
+     (nnheader-report 'nnbabyl "Opened server %s using mbox %s" server
+                    nnbabyl-mbox-file)
+     t)))
+ 
+ (deffoo nnbabyl-close-server (&optional server)
+   ;; Restore buffer mode.
+   (when (and (nnbabyl-server-opened)
+            nnbabyl-previous-buffer-mode)
+     (save-excursion
+       (set-buffer nnbabyl-mbox-buffer)
+       (narrow-to-region
+        (caar nnbabyl-previous-buffer-mode)
+        (cdar nnbabyl-previous-buffer-mode))
+       (funcall (cdr nnbabyl-previous-buffer-mode))))
+   (nnoo-close-server 'nnbabyl server)
+   (setq nnbabyl-mbox-buffer nil)
+   t)
+ 
+ (deffoo nnbabyl-server-opened (&optional server)
+   (and (nnoo-current-server-p 'nnbabyl server)
+        nnbabyl-mbox-buffer
+        (buffer-name nnbabyl-mbox-buffer)
+        nntp-server-buffer
+        (buffer-name nntp-server-buffer)))
+ 
+ (deffoo nnbabyl-request-article (article &optional newsgroup server buffer)
+   (nnbabyl-possibly-change-newsgroup newsgroup server)
+   (save-excursion
+     (set-buffer nnbabyl-mbox-buffer)
+     (goto-char (point-min))
+     (when (search-forward (nnbabyl-article-string article) nil t)
+       (let (start stop summary-line)
+       (unless (re-search-backward (concat "^" nnbabyl-mail-delimiter) nil t)
+         (goto-char (point-min))
+         (end-of-line))
+       (while (and (not (looking-at ".+:"))
+                   (zerop (forward-line 1))))
+       (setq start (point))
+       (or (when (re-search-forward
+                  (concat "^" nnbabyl-mail-delimiter) nil t)
+             (beginning-of-line)
+             t)
+           (goto-char (point-max)))
+       (setq stop (point))
+       (let ((nntp-server-buffer (or buffer nntp-server-buffer)))
+         (set-buffer nntp-server-buffer)
+         (erase-buffer)
+         (insert-buffer-substring nnbabyl-mbox-buffer start stop)
+         (goto-char (point-min))
+         ;; If there is an EOOH header, then we have to remove some
+         ;; duplicated headers.
+         (setq summary-line (looking-at "Summary-line:"))
+         (when (search-forward "\n*** EOOH ***" nil t)
+           (if summary-line
+               ;; The headers to be deleted are located before the
+               ;; EOOH line...
+               (delete-region (point-min) (progn (forward-line 1)
+                                                 (point)))
+             ;; ...or after.
+             (delete-region (progn (beginning-of-line) (point))
+                            (or (search-forward "\n\n" nil t)
+                                (point)))))
+         (if (numberp article)
+             (cons nnbabyl-current-group article)
+           (nnbabyl-article-group-number)))))))
+ 
+ (deffoo nnbabyl-request-group (group &optional server dont-check)
+   (let ((active (cadr (assoc group nnbabyl-group-alist))))
+     (save-excursion
+       (cond
+        ((or (null active)
+           (null (nnbabyl-possibly-change-newsgroup group server)))
+       (nnheader-report 'nnbabyl "No such group: %s" group))
+        (dont-check
+       (nnheader-report 'nnbabyl "Selected group %s" group)
+       (nnheader-insert ""))
+        (t
+       (nnheader-report 'nnbabyl "Selected group %s" group)
+       (nnheader-insert "211 %d %d %d %s\n"
+                        (1+ (- (cdr active) (car active)))
+                        (car active) (cdr active) group))))))
+ 
+ (deffoo nnbabyl-request-scan (&optional group server)
+   (nnbabyl-possibly-change-newsgroup group server)
+   (nnbabyl-read-mbox)
+   (nnmail-get-new-mail
+    'nnbabyl
+    (lambda ()
+      (save-excursion
+        (set-buffer nnbabyl-mbox-buffer)
+        (save-buffer)))
+    (file-name-directory nnbabyl-mbox-file)
+    group
+    (lambda ()
+      (save-excursion
+        (let ((in-buf (current-buffer)))
+        (goto-char (point-min))
+        (while (search-forward "\n\^_\n" nil t)
+          (delete-char -1))
+        (set-buffer nnbabyl-mbox-buffer)
+        (goto-char (point-max))
+        (search-backward "\n\^_" nil t)
+        (goto-char (match-end 0))
+        (insert-buffer-substring in-buf)))
+      (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file))))
+ 
+ (deffoo nnbabyl-close-group (group &optional server)
+   t)
+ 
+ (deffoo nnbabyl-request-create-group (group &optional server args)
+   (nnmail-activate 'nnbabyl)
+   (unless (assoc group nnbabyl-group-alist)
+     (push (list group (cons 1 0))
+         nnbabyl-group-alist)
+     (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file))
+   t)
+ 
+ (deffoo nnbabyl-request-list (&optional server)
+   (save-excursion
+     (nnmail-find-file nnbabyl-active-file)
+     (setq nnbabyl-group-alist (nnmail-get-active))
+     t))
+ 
+ (deffoo nnbabyl-request-newgroups (date &optional server)
+   (nnbabyl-request-list server))
+ 
+ (deffoo nnbabyl-request-list-newsgroups (&optional server)
+   (nnheader-report 'nnbabyl "nnbabyl: LIST NEWSGROUPS is not implemented."))
+ 
+ (deffoo nnbabyl-request-expire-articles
+     (articles newsgroup &optional server force)
+   (nnbabyl-possibly-change-newsgroup newsgroup server)
+   (let* ((is-old t)
+        rest)
+     (nnmail-activate 'nnbabyl)
+ 
+     (save-excursion
+       (set-buffer nnbabyl-mbox-buffer)
+       (gnus-set-text-properties (point-min) (point-max) nil)
+       (while (and articles is-old)
+       (goto-char (point-min))
+       (when (search-forward (nnbabyl-article-string (car articles)) nil t)
+         (if (setq is-old
+                   (nnmail-expired-article-p
+                    newsgroup
+                    (buffer-substring
+                     (point) (progn (end-of-line) (point))) force))
+             (progn
+               (unless (eq nnmail-expiry-target 'delete)
+                 (with-temp-buffer
+                   (nnbabyl-request-article (car articles)
+                                            newsgroup server
+                                            (current-buffer))
+                   (let ((nnml-current-directory nil))
+                     (nnmail-expiry-target-group
+                      nnmail-expiry-target newsgroup)))
+                 (nnbabyl-possibly-change-newsgroup newsgroup server))
+               (nnheader-message 5 "Deleting article %d in %s..."
+                                 (car articles) newsgroup)
+               (nnbabyl-delete-mail))
+           (push (car articles) rest)))
+       (setq articles (cdr articles)))
+       (save-buffer)
+       ;; Find the lowest active article in this group.
+       (let ((active (nth 1 (assoc newsgroup nnbabyl-group-alist))))
+       (goto-char (point-min))
+       (while (and (not (search-forward
+                         (nnbabyl-article-string (car active)) nil t))
+                   (<= (car active) (cdr active)))
+         (setcar active (1+ (car active)))
+         (goto-char (point-min))))
+       (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
+       (nconc rest articles))))
+ 
+ (deffoo nnbabyl-request-move-article
+     (article group server accept-form &optional last)
+   (let ((buf (get-buffer-create " *nnbabyl move*"))
+       result)
+     (and
+      (nnbabyl-request-article article group server)
+      (save-excursion
+        (set-buffer buf)
+        (insert-buffer-substring nntp-server-buffer)
+        (goto-char (point-min))
+        (while (re-search-forward
+              "^X-Gnus-Newsgroup:"
+              (save-excursion (search-forward "\n\n" nil t) (point)) t)
+        (delete-region (progn (beginning-of-line) (point))
+                       (progn (forward-line 1) (point))))
+        (setq result (eval accept-form))
+        (kill-buffer (current-buffer))
+        result)
+      (save-excursion
+        (nnbabyl-possibly-change-newsgroup group server)
+        (set-buffer nnbabyl-mbox-buffer)
+        (goto-char (point-min))
+        (if (search-forward (nnbabyl-article-string article) nil t)
+          (nnbabyl-delete-mail))
+        (and last (save-buffer))))
+     result))
+ 
+ (deffoo nnbabyl-request-accept-article (group &optional server last)
+   (nnbabyl-possibly-change-newsgroup group server)
+   (nnmail-check-syntax)
+   (let ((buf (current-buffer))
+       result beg)
+     (and
+      (nnmail-activate 'nnbabyl)
+      (save-excursion
+        (goto-char (point-min))
+        (search-forward "\n\n" nil t)
+        (forward-line -1)
+        (save-excursion
+        (while (re-search-backward "^X-Gnus-Newsgroup: " beg t)
+          (delete-region (point) (progn (forward-line 1) (point)))))
+        (when nnmail-cache-accepted-message-ids
+        (nnmail-cache-insert (nnmail-fetch-field "message-id") 
+                             group
+                             (nnmail-fetch-field "subject")
+                             (nnmail-fetch-field "from")))
+        (setq result
+            (if (stringp group)
+                (list (cons group (nnbabyl-active-number group)))
+              (nnmail-article-group 'nnbabyl-active-number)))
+        (if (and (null result)
+               (yes-or-no-p "Moved to `junk' group; delete article? "))
+          (setq result 'junk)
+        (setq result (car (nnbabyl-save-mail result))))
+        (set-buffer nnbabyl-mbox-buffer)
+        (goto-char (point-max))
+        (search-backward "\n\^_")
+        (goto-char (match-end 0))
+        (insert-buffer-substring buf)
+        (when last
+        (when nnmail-cache-accepted-message-ids
+          (nnmail-cache-insert (nnmail-fetch-field "message-id") 
+                               group
+                               (nnmail-fetch-field "subject")
+                               (nnmail-fetch-field "from")))
+        (save-buffer)
+        (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file))
+        result))))
+ 
+ (deffoo nnbabyl-request-replace-article (article group buffer)
+   (nnbabyl-possibly-change-newsgroup group)
+   (save-excursion
+     (set-buffer nnbabyl-mbox-buffer)
+     (goto-char (point-min))
+     (if (not (search-forward (nnbabyl-article-string article) nil t))
+       nil
+       (nnbabyl-delete-mail t t)
+       (insert-buffer-substring buffer)
+       (save-buffer)
+       t)))
+ 
+ (deffoo nnbabyl-request-delete-group (group &optional force server)
+   (nnbabyl-possibly-change-newsgroup group server)
+   ;; Delete all articles in GROUP.
+   (if (not force)
+       ()                              ; Don't delete the articles.
+     (save-excursion
+       (set-buffer nnbabyl-mbox-buffer)
+       (goto-char (point-min))
+       ;; Delete all articles in this group.
+       (let ((ident (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"))
+           found)
+       (while (search-forward ident nil t)
+         (setq found t)
+         (nnbabyl-delete-mail))
+       (when found
+         (save-buffer)))))
+   ;; Remove the group from all structures.
+   (setq nnbabyl-group-alist
+       (delq (assoc group nnbabyl-group-alist) nnbabyl-group-alist)
+       nnbabyl-current-group nil)
+   ;; Save the active file.
+   (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
+   t)
+ 
+ (deffoo nnbabyl-request-rename-group (group new-name &optional server)
+   (nnbabyl-possibly-change-newsgroup group server)
+   (save-excursion
+     (set-buffer nnbabyl-mbox-buffer)
+     (goto-char (point-min))
+     (let ((ident (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"))
+         (new-ident (concat "\nX-Gnus-Newsgroup: " new-name ":"))
+         found)
+       (while (search-forward ident nil t)
+       (replace-match new-ident t t)
+       (setq found t))
+       (when found
+       (save-buffer))))
+   (let ((entry (assoc group nnbabyl-group-alist)))
+     (and entry (setcar entry new-name))
+     (setq nnbabyl-current-group nil)
+     ;; Save the new group alist.
+     (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
+     t))
+ 
+ 
+ ;;; Internal functions.
+ 
+ ;; If FORCE, delete article no matter how many X-Gnus-Newsgroup
+ ;; headers there are.  If LEAVE-DELIM, don't delete the Unix mbox
+ ;; delimiter line.
+ (defun nnbabyl-delete-mail (&optional force leave-delim)
+   ;; Delete the current X-Gnus-Newsgroup line.
+   (unless force
+     (delete-region
+      (progn (beginning-of-line) (point))
+      (progn (forward-line 1) (point))))
+   ;; Beginning of the article.
+   (save-excursion
+     (save-restriction
+       (widen)
+       (narrow-to-region
+        (save-excursion
+        (unless (re-search-backward (concat "^" nnbabyl-mail-delimiter) nil t)
+          (goto-char (point-min))
+          (end-of-line))
+        (if leave-delim (progn (forward-line 1) (point))
+          (match-beginning 0)))
+        (progn
+        (forward-line 1)
+        (or (and (re-search-forward (concat "^" nnbabyl-mail-delimiter)
+                                    nil t)
+                 (match-beginning 0))
+            (point-max))))
+       (goto-char (point-min))
+       ;; Only delete the article if no other groups owns it as well.
+       (when (or force (not (re-search-forward "^X-Gnus-Newsgroup: " nil t)))
+       (delete-region (point-min) (point-max))))))
+ 
+ (defun nnbabyl-possibly-change-newsgroup (newsgroup &optional server)
+   (when (and server
+            (not (nnbabyl-server-opened server)))
+     (nnbabyl-open-server server))
+   (when (or (not nnbabyl-mbox-buffer)
+           (not (buffer-name nnbabyl-mbox-buffer)))
+     (save-excursion (nnbabyl-read-mbox)))
+   (unless nnbabyl-group-alist
+     (nnmail-activate 'nnbabyl))
+   (if newsgroup
+       (if (assoc newsgroup nnbabyl-group-alist)
+         (setq nnbabyl-current-group newsgroup)
+       (nnheader-report 'nnbabyl "No such group in file"))
+     t))
+ 
+ (defun nnbabyl-article-string (article)
+   (if (numberp article)
+       (concat "\nX-Gnus-Newsgroup: " nnbabyl-current-group ":"
+             (int-to-string article) " ")
+     (concat "\nMessage-ID: " article)))
+ 
+ (defun nnbabyl-article-group-number ()
+   (save-excursion
+     (goto-char (point-min))
+     (when (re-search-forward "^X-Gnus-Newsgroup: +\\([^:]+\\):\\([0-9]+\\) "
+                            nil t)
+       (cons (buffer-substring (match-beginning 1) (match-end 1))
+           (string-to-int
+            (buffer-substring (match-beginning 2) (match-end 2)))))))
+ 
+ (defun nnbabyl-insert-lines ()
+   "Insert how many lines and chars there are in the body of the mail."
+   (let (lines chars)
+     (save-excursion
+       (goto-char (point-min))
+       (when (search-forward "\n\n" nil t)
+       ;; There may be an EOOH line here...
+       (when (looking-at "\\*\\*\\* EOOH \\*\\*\\*")
+         (search-forward "\n\n" nil t))
+       (setq chars (- (point-max) (point))
+             lines (max (- (count-lines (point) (point-max)) 1) 0))
+       ;; Move back to the end of the headers.
+       (goto-char (point-min))
+       (search-forward "\n\n" nil t)
+       (forward-char -1)
+       (save-excursion
+         (when (re-search-backward "^Lines: " nil t)
+           (delete-region (point) (progn (forward-line 1) (point)))))
+       (insert (format "Lines: %d\n" lines))
+       chars))))
+ 
+ (defun nnbabyl-save-mail (group-art)
+   ;; Called narrowed to an article.
+   (nnbabyl-insert-lines)
+   (nnmail-insert-xref group-art)
+   (nnbabyl-insert-newsgroup-line group-art)
+   (run-hooks 'nnbabyl-prepare-save-mail-hook)
+   group-art)
+ 
+ (defun nnbabyl-insert-newsgroup-line (group-art)
+   (save-excursion
+     (goto-char (point-min))
+     (while (looking-at "From ")
+       (replace-match "Mail-from: From " t t)
+       (forward-line 1))
+     ;; If there is a C-l at the beginning of the narrowed region, this
+     ;; isn't really a "save", but rather a "scan".
+     (goto-char (point-min))
+     (unless (looking-at "\^L")
+       (save-excursion
+       (insert "\^L\n0, unseen,,\n*** EOOH ***\n")
+       (goto-char (point-max))
+       (insert "\^_\n")))
+     (when (search-forward "\n\n" nil t)
+       (forward-char -1)
+       (while group-art
+       (insert (format "X-Gnus-Newsgroup: %s:%d   %s\n"
+                       (caar group-art) (cdar group-art)
+                       (current-time-string)))
+       (setq group-art (cdr group-art))))
+     t))
+ 
+ (defun nnbabyl-active-number (group)
+   ;; Find the next article number in GROUP.
+   (let ((active (cadr (assoc group nnbabyl-group-alist))))
+     (if active
+       (setcdr active (1+ (cdr active)))
+       ;; This group is new, so we create a new entry for it.
+       ;; This might be a bit naughty... creating groups on the drop of
+       ;; a hat, but I don't know...
+       (push (list group (setq active (cons 1 1)))
+           nnbabyl-group-alist))
+     (cdr active)))
+ 
+ (defun nnbabyl-create-mbox ()
+   (unless (file-exists-p nnbabyl-mbox-file)
+     ;; Create a new, empty RMAIL mbox file.
+     (save-excursion
+       (set-buffer (setq nnbabyl-mbox-buffer
+                       (create-file-buffer nnbabyl-mbox-file)))
+       (setq buffer-file-name nnbabyl-mbox-file)
+       (insert "BABYL OPTIONS:\n\n\^_")
+       (nnmail-write-region
+        (point-min) (point-max) nnbabyl-mbox-file t 'nomesg))))
+ 
+ (defun nnbabyl-read-mbox ()
+   (nnmail-activate 'nnbabyl)
+   (nnbabyl-create-mbox)
+ 
+   (unless (and nnbabyl-mbox-buffer
+              (buffer-name nnbabyl-mbox-buffer)
+              (save-excursion
+                (set-buffer nnbabyl-mbox-buffer)
+                (= (buffer-size) (nnheader-file-size nnbabyl-mbox-file))))
+     ;; This buffer has changed since we read it last.  Possibly.
+     (save-excursion
+       (let ((delim (concat "^" nnbabyl-mail-delimiter))
+           (alist nnbabyl-group-alist)
+           start end number)
+       (set-buffer (setq nnbabyl-mbox-buffer
+                         (nnheader-find-file-noselect
+                          nnbabyl-mbox-file nil t)))
+       ;; Save previous buffer mode.
+       (setq nnbabyl-previous-buffer-mode
+             (cons (cons (point-min) (point-max))
+                   major-mode))
+ 
+       (buffer-disable-undo)
+       (widen)
+       (setq buffer-read-only nil)
+       (fundamental-mode)
+ 
+       ;; Go through the group alist and compare against
+       ;; the rmail file.
+       (while alist
+         (goto-char (point-max))
+         (when (and (re-search-backward
+                     (format "^X-Gnus-Newsgroup: %s:\\([0-9]+\\) "
+                             (caar alist))
+                     nil t)
+                    (> (setq number
+                             (string-to-number
+                              (buffer-substring
+                               (match-beginning 1) (match-end 1))))
+                       (cdadar alist)))
+           (setcdr (cadar alist) number))
+         (setq alist (cdr alist)))
+ 
+       ;; We go through the mbox and make sure that each and
+       ;; every mail belongs to some group or other.
+       (goto-char (point-min))
+       (if (looking-at "\^L")
+           (setq start (point))
+         (re-search-forward delim nil t)
+         (setq start (match-end 0)))
+       (while (re-search-forward delim nil t)
+         (setq end (match-end 0))
+         (unless (search-backward "\nX-Gnus-Newsgroup: " start t)
+           (goto-char end)
+           (save-excursion
+             (save-restriction
+               (narrow-to-region (goto-char start) end)
+               (nnbabyl-save-mail
+                (nnmail-article-group 'nnbabyl-active-number))
+               (setq end (point-max)))))
+         (goto-char (setq start end)))
+       (when (buffer-modified-p (current-buffer))
+         (save-buffer))
+       (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)))))
+ 
+ (defun nnbabyl-remove-incoming-delims ()
+   (goto-char (point-min))
+   (while (search-forward "\^_" nil t)
+     (replace-match "?" t t)))
+ 
+ (defun nnbabyl-check-mbox ()
+   "Go through the nnbabyl mbox and make sure that no article numbers are 
reused."
+   (interactive)
+   (let ((idents (make-vector 1000 0))
+       id)
+     (save-excursion
+       (when (or (not nnbabyl-mbox-buffer)
+               (not (buffer-name nnbabyl-mbox-buffer)))
+       (nnbabyl-read-mbox))
+       (set-buffer nnbabyl-mbox-buffer)
+       (goto-char (point-min))
+       (while (re-search-forward "^X-Gnus-Newsgroup: \\([^ ]+\\) "  nil t)
+       (if (intern-soft (setq id (match-string 1)) idents)
+           (progn
+             (delete-region (progn (beginning-of-line) (point))
+                            (progn (forward-line 1) (point)))
+             (nnheader-message 7 "Moving %s..." id)
+             (nnbabyl-save-mail
+              (nnmail-article-group 'nnbabyl-active-number)))
+         (intern id idents)))
+       (when (buffer-modified-p (current-buffer))
+       (save-buffer))
+       (nnmail-save-active nnbabyl-group-alist nnbabyl-active-file)
+       (nnheader-message 5 ""))))
+ 
+ (provide 'nnbabyl)
+ 
+ ;;; arch-tag: aa7ddedb-8c07-4c0e-beb0-58e795c2b81b
+ ;;; nnbabyl.el ends here