cgit.sxemacs.org Git - gnus/blob - lisp/nnfolder.el

   1 ;;; nnfolder.el --- mail folder access for Gnus
   2
   3 ;; Copyright (C) 1995-2011 Free Software Foundation, Inc.
   4
   5 ;; Author: Simon Josefsson <simon@josefsson.org> (adding MARKS)
   6 ;;      ShengHuo Zhu <zsh@cs.rochester.edu> (adding NOV)
   7 ;;      Scott Byer <byer@mv.us.adobe.com>
   8 ;;      Lars Magne Ingebrigtsen <larsi@gnus.org>
   9 ;;      Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
  10 ;; Keywords: mail
  11
  12 ;; This file is part of GNU Emacs.
  13
  14 ;; GNU Emacs is free software: you can redistribute it and/or modify
  15 ;; it under the terms of the GNU General Public License as published by
  16 ;; the Free Software Foundation, either version 3 of the License, or
  17 ;; (at your option) any later version.
  18
  19 ;; GNU Emacs is distributed in the hope that it will be useful,
  20 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22 ;; GNU General Public License for more details.
  23
  24 ;; You should have received a copy of the GNU General Public License
  25 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  26
  27 ;;; Commentary:
  28
  29 ;;; Code:
  30
  31 ;; For Emacs <22.2 and XEmacs.
  32 (eval-and-compile
  33   (unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
  34
  35 (require 'nnheader)
  36 (require 'message)
  37 (require 'nnmail)
  38 (require 'nnoo)
  39 (eval-when-compile (require 'cl))
  40 (require 'gnus)
  41 (require 'gnus-util)
  42 (require 'gnus-range)
  43
  44 ;; FIXME not explicitly used in this file.
  45 (autoload 'gnus-article-unpropagatable-p "gnus-sum")
  46
  47 (nnoo-declare nnfolder)
  48
  49 (defvoo nnfolder-directory (expand-file-name message-directory)
  50   "The name of the nnfolder directory.")
  51
  52 (defvoo nnfolder-nov-directory nil
  53   "The name of the nnfolder NOV directory.
  54 If nil, `nnfolder-directory' is used.")
  55
  56 (defvoo nnfolder-marks-directory nil
  57   "The name of the nnfolder MARKS directory.
  58 If nil, `nnfolder-directory' is used.")
  59
  60 (defvoo nnfolder-active-file
  61     (nnheader-concat nnfolder-directory "active")
  62   "The name of the active file.")
  63
  64 ;; I renamed this variable to something more in keeping with the general GNU
  65 ;; style. -SLB
  66
  67 (defvoo nnfolder-ignore-active-file nil
  68   "If non-nil, the active file is ignored.
  69 This causes nnfolder to do some extra work in order to determine the
  70 true active ranges of an mbox file.  Note that the active file is
  71 still saved, but its values are not used.  This costs some extra time
  72 when scanning an mbox when opening it.")
  73
  74 (defvoo nnfolder-distrust-mbox nil
  75   "If non-nil, the folder will be distrusted.
  76 This means that nnfolder will not trust the user with respect to
  77 inserting unaccounted for mail in the middle of an mbox file.  This
  78 can greatly slow down scans, which now must scan the entire file for
  79 unmarked messages.  When nil, scans occur forward from the last marked
  80 message, a huge time saver for large mailboxes.")
  81
  82 (defvoo nnfolder-newsgroups-file
  83     (concat (file-name-as-directory nnfolder-directory) "newsgroups")
  84   "Mail newsgroups description file.")
  85
  86 (defvoo nnfolder-get-new-mail t
  87   "If non-nil, nnfolder will check the incoming mail file and split the mail.")
  88
  89 (defvoo nnfolder-prepare-save-mail-hook nil
  90   "Hook run narrowed to an article before saving.")
  91
  92 (defvoo nnfolder-save-buffer-hook nil
  93   "Hook run before saving the nnfolder mbox buffer.")
  94
  95
  96 (defvoo nnfolder-inhibit-expiry nil
  97   "If non-nil, inhibit expiry.")
  98
  99 \f
 100
 101 (defconst nnfolder-version "nnfolder 2.0"
 102   "nnfolder version.")
 103
 104 (defconst nnfolder-article-marker "X-Gnus-Article-Number: "
 105   "String used to demarcate what the article number for a message is.")
 106
 107 (defvoo nnfolder-current-group nil)
 108 (defvoo nnfolder-current-buffer nil)
 109 (defvoo nnfolder-status-string "")
 110 (defvoo nnfolder-group-alist nil)
 111 (defvoo nnfolder-buffer-alist nil)
 112 (defvoo nnfolder-scantime-alist nil)
 113 (defvoo nnfolder-active-timestamp nil)
 114 (defvoo nnfolder-active-file-coding-system mm-text-coding-system)
 115 (defvoo nnfolder-active-file-coding-system-for-write
 116     nnmail-active-file-coding-system)
 117 (defvoo nnfolder-file-coding-system mm-text-coding-system)
 118 (defvoo nnfolder-file-coding-system-for-write nnheader-file-coding-system
 119   "Coding system for save nnfolder file.
 120 if nil, `nnfolder-file-coding-system' is used.") ; FIXME: fill-in the doc-string of this variable
 121
 122 (defvoo nnfolder-nov-is-evil nil
 123   "If non-nil, Gnus will never generate and use nov databases for mail groups.
 124 Using nov databases will speed up header fetching considerably.
 125 This variable shouldn't be flipped much.  If you have, for some reason,
 126 set this to t, and want to set it to nil again, you should always run
 127 the `nnfolder-generate-active-file' command.  The function will go
 128 through all nnfolder directories and generate nov databases for them
 129 all.  This may very well take some time.")
 130
 131 (defvoo nnfolder-nov-file-suffix ".nov")
 132
 133 (defvoo nnfolder-nov-buffer-alist nil)
 134
 135 (defvar nnfolder-nov-buffer-file-name nil)
 136
 137 (defvoo nnfolder-marks-is-evil nil
 138   "If non-nil, Gnus will never generate and use marks file for mail groups.
 139 Using marks files makes it possible to backup and restore mail groups
 140 separately from `.newsrc.eld'.  If you have, for some reason, set
 141 this to t, and want to set it to nil again, you should always remove
 142 the corresponding marks file (usually base nnfolder file name
 143 concatenated with `.mrk', but see `nnfolder-marks-file-suffix') for
 144 the group.  Then the marks file will be regenerated properly by Gnus.")
 145
 146 (defvoo nnfolder-marks nil)
 147
 148 (defvoo nnfolder-marks-file-suffix ".mrk")
 149
 150 (defvar nnfolder-marks-modtime (gnus-make-hashtable))
 151
 152 \f
 153
 154 ;;; Interface functions
 155
 156 (nnoo-define-basics nnfolder)
 157
 158 (deffoo nnfolder-retrieve-headers (articles &optional group server fetch-old)
 159   (with-current-buffer nntp-server-buffer
 160     (erase-buffer)
 161     (let (article start stop num)
 162       (nnfolder-possibly-change-group group server)
 163       (when nnfolder-current-buffer
 164         (set-buffer nnfolder-current-buffer)
 165         (goto-char (point-min))
 166         (if (stringp (car articles))
 167             'headers
 168           (if (nnfolder-retrieve-headers-with-nov articles fetch-old)
 169               'nov
 170             (setq articles (gnus-sorted-intersection
 171                             ;; Is ARTICLES sorted?
 172                             (sort articles '<)
 173                             (nnfolder-existing-articles)))
 174             (while (setq article (pop articles))
 175               (set-buffer nnfolder-current-buffer)
 176               (cond ((nnfolder-goto-article article)
 177                      (setq start (point))
 178                      (setq stop (if (search-forward "\n\n" nil t)
 179                                     (1- (point))
 180                                   (point-max)))
 181                      (set-buffer nntp-server-buffer)
 182                      (insert (format "221 %d Article retrieved.\n" article))
 183                      (insert-buffer-substring nnfolder-current-buffer
 184                                               start stop)
 185                      (goto-char (point-max))
 186                      (insert ".\n"))
 187
 188                     ;; If we couldn't find this article, skip over ranges
 189                     ;; of missing articles so we don't search the whole file
 190                     ;; for each of them.
 191                     ((numberp article)
 192                      (setq start (point))
 193                      (and
 194                       ;; Check that we are either at BOF or after an
 195                       ;; article with a lower number.  We do this so we
 196                       ;; won't be confused by out-of-order article numbers,
 197                       ;; as caused by active file bogosity.
 198                       (cond
 199                        ((bobp))
 200                        ((search-backward (concat "\n" nnfolder-article-marker)
 201                                          nil t)
 202                         (goto-char (match-end 0))
 203                         (setq num (string-to-number
 204                                    (buffer-substring
 205                                     (point) (point-at-eol))))
 206                         (goto-char start)
 207                         (< num article)))
 208                       ;; Check that we are before an article with a
 209                       ;; higher number.
 210                       (search-forward (concat "\n" nnfolder-article-marker)
 211                                       nil t)
 212                       (progn
 213                         (setq num (string-to-number
 214                                    (buffer-substring
 215                                     (point) (point-at-eol))))
 216                         (> num article))
 217                       ;; Discard any article numbers before the one we're
 218                       ;; now looking at.
 219                       (while (and articles
 220                                   (< (car articles) num))
 221                         (setq articles (cdr articles))))
 222                      (goto-char start))))
 223             (set-buffer nntp-server-buffer)
 224             (nnheader-fold-continuation-lines)
 225             'headers))))))
 226
 227 (deffoo nnfolder-open-server (server &optional defs)
 228   (nnoo-change-server 'nnfolder server defs)
 229   (nnmail-activate 'nnfolder t)
 230   (gnus-make-directory nnfolder-directory)
 231   (unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
 232     (and nnfolder-nov-directory
 233          (gnus-make-directory nnfolder-nov-directory)))
 234   (unless nnfolder-marks-is-evil
 235     (and nnfolder-marks-directory
 236          (gnus-make-directory nnfolder-marks-directory)))
 237   (cond
 238    ((not (file-exists-p nnfolder-directory))
 239     (nnfolder-close-server)
 240     (nnheader-report 'nnfolder "Couldn't create directory: %s"
 241                      nnfolder-directory))
 242    ((not (file-directory-p (file-truename nnfolder-directory)))
 243     (nnfolder-close-server)
 244     (nnheader-report 'nnfolder "Not a directory: %s" nnfolder-directory))
 245    (t
 246     (nnmail-activate 'nnfolder)
 247     (nnheader-report 'nnfolder "Opened server %s using directory %s"
 248                      server nnfolder-directory)
 249     t)))
 250
 251 (deffoo nnfolder-request-close ()
 252   (let ((alist nnfolder-buffer-alist))
 253     (while alist
 254       (nnfolder-close-group (caar alist) nil t)
 255       (setq alist (cdr alist))))
 256   (nnoo-close-server 'nnfolder)
 257   (setq nnfolder-buffer-alist nil
 258         nnfolder-group-alist nil))
 259
 260 (deffoo nnfolder-request-article (article &optional group server buffer)
 261   (nnfolder-possibly-change-group group server)
 262   (with-current-buffer nnfolder-current-buffer
 263     (goto-char (point-min))
 264     (when (nnfolder-goto-article article)
 265       (let (start stop)
 266         (setq start (point))
 267         (forward-line 1)
 268         (unless (and (nnmail-search-unix-mail-delim)
 269                      (forward-line -1))
 270           (goto-char (point-max)))
 271         (setq stop (point))
 272         (let ((nntp-server-buffer (or buffer nntp-server-buffer)))
 273           (set-buffer nntp-server-buffer)
 274           (erase-buffer)
 275           (insert-buffer-substring nnfolder-current-buffer start stop)
 276           (goto-char (point-min))
 277           (while (looking-at "From ")
 278             (delete-char 5)
 279             (insert "X-From-Line: ")
 280             (forward-line 1))
 281           (if (numberp article)
 282               (cons nnfolder-current-group article)
 283             (goto-char (point-min))
 284             (cons nnfolder-current-group
 285                   (if (search-forward (concat "\n" nnfolder-article-marker)
 286                                       nil t)
 287                       (string-to-number (buffer-substring
 288                                       (point) (point-at-eol)))
 289                     -1))))))))
 290
 291 (deffoo nnfolder-request-group (group &optional server dont-check info)
 292   (nnfolder-possibly-change-group group server t)
 293   (save-excursion
 294     (cond ((not (assoc group nnfolder-group-alist))
 295            (nnheader-report 'nnfolder "No such group: %s" group))
 296           ((file-directory-p (nnfolder-group-pathname group))
 297            (nnheader-report 'nnfolder "%s is a directory"
 298                             (file-name-as-directory
 299                              (let ((nnmail-pathname-coding-system nil))
 300                                (nnfolder-group-pathname group)))))
 301           (dont-check
 302            (nnheader-report 'nnfolder "Selected group %s" group)
 303            t)
 304           (t
 305            (let* ((active (assoc group nnfolder-group-alist))
 306                   (group (car active))
 307                   (range (cadr active)))
 308              (cond
 309               ((null active)
 310                (nnheader-report 'nnfolder "No such group: %s" group))
 311               ((null nnfolder-current-group)
 312                (nnheader-report 'nnfolder "Empty group: %s" group))
 313               (t
 314                (nnheader-report 'nnfolder "Selected group %s" group)
 315                (nnheader-insert "211 %d %d %d %s\n"
 316                                 (1+ (- (cdr range) (car range)))
 317                                 (car range) (cdr range) group))))))))
 318
 319 (deffoo nnfolder-request-scan (&optional group server)
 320   (nnfolder-possibly-change-group nil server)
 321   (when nnfolder-get-new-mail
 322     (nnfolder-possibly-change-group group server)
 323     (nnmail-get-new-mail
 324      'nnfolder 'nnfolder-save-all-buffers
 325      nnfolder-directory group)))
 326
 327 (defun nnfolder-save-all-buffers ()
 328   (let ((bufs nnfolder-buffer-alist))
 329     (save-excursion
 330       (while bufs
 331         (if (not (gnus-buffer-live-p (nth 1 (car bufs))))
 332             (setq nnfolder-buffer-alist
 333                   (delq (car bufs) nnfolder-buffer-alist))
 334           (set-buffer (nth 1 (car bufs)))
 335           (nnfolder-save-buffer)
 336           (kill-buffer (current-buffer)))
 337         (setq bufs (cdr bufs))))))
 338
 339 ;; Don't close the buffer if we're not shutting down the server.  This way,
 340 ;; we can keep the buffer in the group buffer cache, and not have to grovel
 341 ;; over the buffer again unless we add new mail to it or modify it in some
 342 ;; way.
 343
 344 (deffoo nnfolder-close-group (group &optional server force)
 345   ;; Make sure we _had_ the group open.
 346   (when (or (assoc group nnfolder-buffer-alist)
 347             (equal group nnfolder-current-group))
 348     (let ((inf (assoc group nnfolder-buffer-alist)))
 349       (when inf
 350         (when (and nnfolder-current-group
 351                    nnfolder-current-buffer)
 352           (push (list nnfolder-current-group nnfolder-current-buffer)
 353                 nnfolder-buffer-alist))
 354         (setq nnfolder-buffer-alist
 355               (delq inf nnfolder-buffer-alist))
 356         (setq nnfolder-current-buffer (cadr inf)
 357               nnfolder-current-group (car inf))))
 358     (when (and nnfolder-current-buffer
 359                (buffer-name nnfolder-current-buffer))
 360       (with-current-buffer nnfolder-current-buffer
 361         ;; If the buffer was modified, write the file out now.
 362         (nnfolder-save-buffer)
 363         ;; If we're shutting the server down, we need to kill the
 364         ;; buffer and remove it from the open buffer list.  Or, of
 365         ;; course, if we're trying to minimize our space impact.
 366         (kill-buffer (current-buffer))
 367         (setq nnfolder-buffer-alist (delq (assoc group nnfolder-buffer-alist)
 368                                           nnfolder-buffer-alist)))))
 369   (setq nnfolder-current-group nil
 370         nnfolder-current-buffer nil)
 371   t)
 372
 373 (deffoo nnfolder-request-create-group (group &optional server args)
 374   (nnfolder-possibly-change-group nil server)
 375   (nnmail-activate 'nnfolder)
 376   (cond ((zerop (length group))
 377          (nnheader-report 'nnfolder "Invalid (empty) group name"))
 378         ((file-directory-p (nnfolder-group-pathname group))
 379          (nnheader-report 'nnfolder "%s is a directory"
 380                           (file-name-as-directory
 381                            (let ((nnmail-pathname-coding-system nil))
 382                              (nnfolder-group-pathname group)))))
 383         ((assoc group nnfolder-group-alist)
 384          t)
 385         (t
 386          (push (list group (cons 1 0)) nnfolder-group-alist)
 387          (nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
 388          (save-current-buffer
 389            (nnfolder-read-folder group))
 390          t)))
 391
 392 (deffoo nnfolder-request-list (&optional server)
 393   (nnfolder-possibly-change-group nil server)
 394   (save-excursion
 395     (let ((nnmail-file-coding-system nnfolder-active-file-coding-system))
 396       (nnmail-find-file nnfolder-active-file)
 397       (setq nnfolder-group-alist (nnmail-get-active)))
 398     t))
 399
 400 (deffoo nnfolder-request-newgroups (date &optional server)
 401   (nnfolder-possibly-change-group nil server)
 402   (nnfolder-request-list server))
 403
 404 (deffoo nnfolder-request-list-newsgroups (&optional server)
 405   (nnfolder-possibly-change-group nil server)
 406   (save-excursion
 407     (let ((nnmail-file-coding-system nnfolder-file-coding-system))
 408       (nnmail-find-file nnfolder-newsgroups-file))))
 409
 410 ;; Return a list consisting of all article numbers existing in the
 411 ;; current folder.
 412
 413 (defun nnfolder-existing-articles ()
 414   (save-excursion
 415     (when nnfolder-current-buffer
 416       (set-buffer nnfolder-current-buffer)
 417       (goto-char (point-min))
 418       (let ((marker (concat "\n" nnfolder-article-marker))
 419             (number "[0-9]+")
 420             numbers)
 421         (while (and (search-forward marker nil t)
 422                     (re-search-forward number nil t))
 423           (let ((newnum (string-to-number (match-string 0))))
 424             (if (nnmail-within-headers-p)
 425                 (push newnum numbers))))
 426       ;; The article numbers are increasing, so this result is sorted.
 427         (nreverse numbers)))))
 428
 429 (autoload 'gnus-request-group "gnus-int")
 430 (declare-function gnus-request-create-group "gnus-int"
 431                   (group &optional gnus-command-method args))
 432
 433 (deffoo nnfolder-request-expire-articles (articles newsgroup
 434                                                    &optional server force)
 435   (nnfolder-possibly-change-group newsgroup server)
 436   (let ((is-old t)
 437         ;; The articles we have deleted so far.
 438         (deleted-articles nil)
 439         ;; The articles that really exist and will
 440         ;; be expired if they are old enough.
 441         (maybe-expirable
 442          (gnus-sorted-intersection articles (nnfolder-existing-articles)))
 443         target)
 444     (nnmail-activate 'nnfolder)
 445
 446     (with-current-buffer nnfolder-current-buffer
 447       ;; Since messages are sorted in arrival order and expired in the
 448       ;; same order, we can stop as soon as we find a message that is
 449       ;; too old.
 450       (while (and maybe-expirable is-old)
 451         (goto-char (point-min))
 452         (when (and (nnfolder-goto-article (car maybe-expirable))
 453                    (search-forward (concat "\n" nnfolder-article-marker)
 454                                    nil t))
 455           (forward-sexp)
 456           (when (setq is-old
 457                       (nnmail-expired-article-p
 458                        newsgroup
 459                        (buffer-substring
 460                         (point) (progn (end-of-line) (point)))
 461                        force nnfolder-inhibit-expiry))
 462             (setq target nnmail-expiry-target)
 463             (unless (eq target 'delete)
 464               (with-temp-buffer
 465                 (nnfolder-request-article (car maybe-expirable)
 466                                           newsgroup server (current-buffer))
 467                 (let ((nnfolder-current-directory nil))
 468                   (when (functionp target)
 469                     (setq target (funcall target newsgroup)))
 470                   (when (and target (not (eq target 'delete)))
 471                     (if (or (gnus-request-group target)
 472                             (gnus-request-create-group target))
 473                         (nnmail-expiry-target-group target newsgroup)
 474                       (setq target nil)))))
 475               (nnfolder-possibly-change-group newsgroup server))
 476             (when target
 477               (nnheader-message 5 "Deleting article %d in %s..."
 478                                 (car maybe-expirable) newsgroup)
 479               (nnfolder-delete-mail)
 480               (unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
 481                 (nnfolder-nov-delete-article newsgroup (car maybe-expirable)))
 482               ;; Must remember which articles were actually deleted
 483               (push (car maybe-expirable) deleted-articles))))
 484         (setq maybe-expirable (cdr maybe-expirable)))
 485       (unless nnfolder-inhibit-expiry
 486         (nnheader-message 5 "Deleting articles...done"))
 487       (nnfolder-save-buffer)
 488       (nnfolder-adjust-min-active newsgroup)
 489       (nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
 490       (nnfolder-save-all-buffers)
 491       (gnus-sorted-difference articles (nreverse deleted-articles)))))
 492
 493 (deffoo nnfolder-request-move-article (article group server accept-form
 494                                                &optional last move-is-internal)
 495   (save-excursion
 496     (let ((buf (get-buffer-create " *nnfolder move*"))
 497           result)
 498       (and
 499        (nnfolder-request-article article group server)
 500        (with-current-buffer buf
 501          (erase-buffer)
 502          (insert-buffer-substring nntp-server-buffer)
 503          (goto-char (point-min))
 504          (while (re-search-forward
 505                  (concat "^" nnfolder-article-marker)
 506                  (save-excursion (and (search-forward "\n\n" nil t) (point)))
 507                  t)
 508            (gnus-delete-line))
 509          (setq result (eval accept-form))
 510          (kill-buffer buf)
 511          result)
 512        (save-excursion
 513          (nnfolder-possibly-change-group group server)
 514          (set-buffer nnfolder-current-buffer)
 515          (goto-char (point-min))
 516          (when (nnfolder-goto-article article)
 517            (nnfolder-delete-mail))
 518          (unless (or gnus-nov-is-evil nnfolder-nov-is-evil)
 519            (nnfolder-nov-delete-article group article))
 520          (when last
 521            (nnfolder-save-buffer)
 522            (nnfolder-adjust-min-active group)
 523            (nnfolder-save-active nnfolder-group-alist nnfolder-active-file))))
 524       result)))
 525
 526 (deffoo nnfolder-request-accept-article (group &optional server last)
 527   (save-excursion
 528     (nnfolder-possibly-change-group group server)
 529     (nnmail-check-syntax)
 530     (let ((buf (current-buffer))
 531           result art-group)
 532       (goto-char (point-min))
 533       (when (looking-at "X-From-Line: ")
 534         (replace-match "From ")
 535         (while (progn (forward-line) (looking-at "[ \t]"))
 536           (delete-char -1)))
 537       (with-temp-buffer
 538         (let ((nnmail-file-coding-system nnfolder-active-file-coding-system)
 539               (nntp-server-buffer (current-buffer)))
 540           (nnmail-find-file nnfolder-active-file)
 541           (setq nnfolder-group-alist (nnmail-parse-active))))
 542       (save-excursion
 543         (goto-char (point-min))
 544         (if (search-forward "\n\n" nil t)
 545             (forward-line -1)
 546           (goto-char (point-max)))
 547         (while (re-search-backward (concat "^" nnfolder-article-marker) nil t)
 548           (delete-region (point) (progn (forward-line 1) (point))))
 549         (when nnmail-cache-accepted-message-ids
 550           (nnmail-cache-insert (nnmail-fetch-field "message-id")
 551                                group
 552                                (nnmail-fetch-field "subject")
 553                                (nnmail-fetch-field "from")))
 554         (setq result (if (stringp group)
 555                          (list (cons group (nnfolder-active-number group)))
 556                        (setq art-group
 557                              (nnmail-article-group 'nnfolder-active-number))))
 558         (if (and (null result)
 559                  (yes-or-no-p "Moved to `junk' group; delete article? "))
 560             (setq result 'junk)
 561           (setq result
 562                 (car (nnfolder-save-mail result)))))
 563       (when last
 564         (save-excursion
 565           (nnfolder-possibly-change-folder (or (caar art-group) group))
 566           (nnfolder-save-buffer)
 567           (when nnmail-cache-accepted-message-ids
 568             (nnmail-cache-close))))
 569       (nnfolder-save-active nnfolder-group-alist nnfolder-active-file)
 570       (unless result
 571         (nnheader-report 'nnfolder "Couldn't store article"))
 572       result)))
 573
 574 (deffoo nnfolder-request-replace-article (article group buffer)
 575   (nnfolder-possibly-change-group group)
 576   (with-current-buffer buffer
 577     (goto-char (point-min))
 578     (if (not (looking-at "X-From-Line: "))
 579         (insert "From nobody " (current-time-string) "\n")
 580       (replace-match "From ")
 581       (forward-line 1)
 582       (while (looking-at "[ \t]")
 583         (delete-char -1)
 584         (forward-line 1)))
 585     (nnfolder-normalize-buffer)
 586     (set-buffer&nb