X-Git-Url: https://cgit.sxemacs.org/?a=blobdiff_plain;f=lisp%2Fnnml.el;h=08610c1fb08cb89d0c54d3bbc3c0608cbb428ad1;hb=496f24fcccdd35bbe5b4f5a2ceaf591722f14897;hp=97e32ac7109e07be501d717eee50874983345583;hpb=1fa15815f71373788afe349aca310b7de24143d2;p=gnus

diff --git a/lisp/nnml.el b/lisp/nnml.el
index 97e32ac71..08610c1fb 100644
--- a/lisp/nnml.el
+++ b/lisp/nnml.el
@@ -1,10 +1,12 @@
 ;;; nnml.el --- mail spool access for Gnus
-;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001
-;;        Free Software Foundation, Inc.
 
-;; Author: Simon Josefsson <simon@josefsson.org> (adding MARKS)
-;;      Lars Magne Ingebrigtsen <larsi@gnus.org>
-;; 	Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
+;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+;;   2004, 2005, 2006, 2007 Free Software Foundation, Inc.
+
+;; Authors: Didier Verna <didier@xemacs.org> (adding compaction)
+;;	Simon Josefsson <simon@josefsson.org> (adding MARKS)
+;;	Lars Magne Ingebrigtsen <larsi@gnus.org>
+;;	Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
 ;; Keywords: news, mail
 
 ;; This file is part of GNU Emacs.
@@ -21,8 +23,8 @@
 
 ;; 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.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
 
 ;;; Commentary:
 
@@ -38,29 +40,25 @@
 (require 'nnoo)
 (eval-when-compile (require 'cl))
 
+(eval-and-compile
+  (autoload 'gnus-article-unpropagatable-p "gnus-sum")
+  (autoload 'gnus-backlog-remove-article "gnus-bcklg"))
+
 (nnoo-declare nnml)
 
 (defvoo nnml-directory message-directory
-  "Spool directory for the nnml mail backend.
-
-This variable is a virtual server slot.  See the Gnus manual for details.")
+  "Spool directory for the nnml mail backend.")
 
 (defvoo nnml-active-file
     (expand-file-name "active" nnml-directory)
-  "Mail active file.
-
-This variable is a virtual server slot.  See the Gnus manual for details.")
+  "Mail active file.")
 
 (defvoo nnml-newsgroups-file
     (expand-file-name "newsgroups" nnml-directory)
-  "Mail newsgroups description file.
-
-This variable is a virtual server slot.  See the Gnus manual for details.")
+  "Mail newsgroups description file.")
 
 (defvoo nnml-get-new-mail t
-  "If non-nil, nnml will check the incoming mail file and split the mail.
-
-This variable is a virtual server slot.  See the Gnus manual for details.")
+  "If non-nil, nnml will check the incoming mail file and split the mail.")
 
 (defvoo nnml-nov-is-evil nil
   "If non-nil, Gnus will never generate and use nov databases for mail spools.
@@ -69,9 +67,7 @@ This variable shouldn't be flipped much.  If you have, for some reason,
 set this to t, and want to set it to nil again, you should always run
 the `nnml-generate-nov-databases' command.  The function will go
 through all nnml directories and generate nov databases for them
-all.  This may very well take some time.
-
-This variable is a virtual server slot.  See the Gnus manual for details.")
+all.  This may very well take some time.")
 
 (defvoo nnml-marks-is-evil nil
   "If non-nil, Gnus will never generate and use marks file for mail spools.
@@ -80,20 +76,27 @@ separately from `.newsrc.eld'.  If you have, for some reason, set this
 to t, and want to set it to nil again, you should always remove the
 corresponding marks file (usually named `.marks' in the nnml group
 directory, but see `nnml-marks-file-name') for the group.  Then the
-marks file will be regenerated properly by Gnus.
-
-This variable is a virtual server slot.  See the Gnus manual for details.")
+marks file will be regenerated properly by Gnus.")
 
 (defvoo nnml-prepare-save-mail-hook nil
-  "Hook run narrowed to an article before saving.
-
-This variable is a virtual server slot.  See the Gnus manual for details.")
+  "Hook run narrowed to an article before saving.")
 
 (defvoo nnml-inhibit-expiry nil
-  "If non-nil, inhibit expiry.
+  "If non-nil, inhibit expiry.")
 
-This variable is a virtual server slot.  See the Gnus manual for details.")
+(defvoo nnml-use-compressed-files nil
+  "If non-nil, allow using compressed message files.
 
+If it is a string, use it as the file extension which specifies
+the compression program.  You can set it to \".bz2\" if your Emacs
+supports auto-compression using the bzip2 program.  A value of t
+is equivalent to \".gz\".")
+
+(defvoo nnml-compressed-files-size-threshold 1000
+  "Default size threshold for compressed message files.
+Message files with bodies larger than that many characters will
+be automatically compressed if `nnml-use-compressed-files' is
+non-nil.")
 
 
 
@@ -119,8 +122,9 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
 
 (defvoo nnml-marks nil)
 
-
+(defvar nnml-marks-modtime (gnus-make-hashtable))
 
+
 ;;; Interface functions.
 
 (nnoo-define-basics nnml)
@@ -149,7 +153,7 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
 		(setq beg (point))
 		(nnheader-insert-head file)
 		(goto-char beg)
-		(if (search-forward "\n\n" nil t)
+		(if (re-search-forward "\n\r?\n" nil t)
 		    (forward-char -1)
 		  (goto-char (point-max))
 		  (insert "\n\n"))
@@ -200,7 +204,7 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
 	(when (and (setq group-num (nnml-find-group-number id))
 		   (cdr
 		    (assq (cdr group-num)
-			  (nnml-article-to-file-alist
+			  (nnheader-article-to-file-alist
 			   (setq gpath
 				 (nnmail-group-pathname
 				  (car group-num)
@@ -222,7 +226,7 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
       (nnheader-report 'nnml "Article %s retrieved" id)
       ;; We return the article number.
       (cons (if group-num (car group-num) group)
-	    (string-to-int (file-name-nondirectory path)))))))
+	    (string-to-number (file-name-nondirectory path)))))))
 
 (deffoo nnml-request-group (group &optional server dont-check)
   (let ((file-name-coding-system nnmail-pathname-coding-system))
@@ -261,12 +265,16 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
   (nnml-possibly-change-directory nil server)
   (nnmail-activate 'nnml)
   (cond
+   ((let ((file (directory-file-name
+		 (nnmail-group-pathname group nnml-directory))))
+      (and (file-exists-p file)
+	   (not (file-directory-p file))))
+    (nnheader-report 'nnml "%s is a file"
+		     (directory-file-name
+		      (let ((nnmail-pathname-coding-system nil))
+			(nnmail-group-pathname group nnml-directory)))))
    ((assoc group nnml-group-alist)
     t)
-   ((and (file-exists-p (nnmail-group-pathname group nnml-directory))
-	 (not (file-directory-p (nnmail-group-pathname group nnml-directory))))
-    (nnheader-report 'nnml "%s is a file"
-		     (nnmail-group-pathname group nnml-directory)))
    (t
     (let (active)
       (push (list group (setq active (cons 1 0)))
@@ -300,7 +308,7 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
   (let ((active-articles
 	 (nnml-directory-articles nnml-current-directory))
 	(is-old t)
-	article rest mod-time number)
+	article rest mod-time number target)
     (nnmail-activate 'nnml)
 
     (setq active-articles (sort active-articles '<))
@@ -309,28 +317,41 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
     (setq articles (gnus-sorted-intersection articles active-articles))
 
     (while (and articles is-old)
-      (if (and (setq article (nnml-article-to-file (setq number (pop articles))))
+      (if (and (setq article (nnml-article-to-file
+			      (setq number (pop articles))))
 	       (setq mod-time (nth 5 (file-attributes article)))
 	       (nnml-deletable-article-p group number)
 	       (setq is-old (nnmail-expired-article-p group mod-time force
 						      nnml-inhibit-expiry)))
 	  (progn
 	    ;; Allow a special target group.
-	    (unless (eq nnmail-expiry-target 'delete)
+	    (setq target nnmail-expiry-target)
+	    (unless (eq target 'delete)
 	      (with-temp-buffer
 		(nnml-request-article number group server (current-buffer))
 		(let (nnml-current-directory
 		      nnml-current-group
 		      nnml-article-file-alist)
-		  (nnmail-expiry-target-group nnmail-expiry-target group))))
-	    (nnheader-message 5 "Deleting article %s in %s"
-			      number group)
-	    (condition-case ()
-		(funcall nnmail-delete-file-function article)
-	      (file-error
-	       (push number rest)))
-	    (setq active-articles (delq number active-articles))
-	    (nnml-nov-delete-article group number))
+		  (when (functionp target)
+		    (setq target (funcall target group)))
+		  (if (and target
+			   (or (gnus-request-group target)
+			       (gnus-request-create-group target)))
+		      (nnmail-expiry-target-group target group)
+		    (setq target nil))))
+	      ;; Maybe directory is changed during nnmail-expiry-target-group.
+	      (nnml-possibly-change-directory group server))
+	    (if target
+		(progn
+		  (nnheader-message 5 "Deleting article %s in %s"
+				    number group)
+		  (condition-case ()
+		      (funcall nnmail-delete-file-function article)
+		    (file-error
+		     (push number rest)))
+		  (setq active-articles (delq number active-articles))
+		  (nnml-nov-delete-article group number))
+	      (push number rest)))
 	(push number rest)))
     (let ((active (nth 1 (assoc group nnml-group-alist))))
       (when active
@@ -342,7 +363,7 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
     (nconc rest articles)))
 
 (deffoo nnml-request-move-article
-    (article group server accept-form &optional last)
+    (article group server accept-form &optional last move-is-internal)
   (let ((buf (get-buffer-create " *nnml move*"))
 	result)
     (nnml-possibly-change-directory group server)
@@ -376,7 +397,10 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
   (nnmail-check-syntax)
   (let (result)
     (when nnmail-cache-accepted-message-ids
-      (nnmail-cache-insert (nnmail-fetch-field "message-id")))
+      (nnmail-cache-insert (nnmail-fetch-field "message-id")
+			   group
+			   (nnmail-fetch-field "subject")
+			   (nnmail-fetch-field "from")))
     (if (stringp group)
 	(and
 	 (nnmail-activate 'nnml)
@@ -425,13 +449,12 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
 	  (if (or (looking-at art)
 		  (search-forward (concat "\n" art) nil t))
 	      ;; Delete the old NOV line.
-	      (delete-region (progn (beginning-of-line) (point))
-			     (progn (forward-line 1) (point)))
+	      (gnus-delete-line)
 	    ;; The line isn't here, so we have to find out where
 	    ;; we should insert it.  (This situation should never
 	    ;; occur, but one likes to make sure...)
 	    (while (and (looking-at "[0-9]+\t")
-			(< (string-to-int
+			(< (string-to-number
 			    (buffer-substring
 			     (match-beginning 0) (match-end 0)))
 			   article)
@@ -450,10 +473,8 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
 	    nnml-current-directory t
 	    (concat nnheader-numerical-short-files
 		    "\\|" (regexp-quote nnml-nov-file-name) "$"
-		    "\\|" (regexp-quote nnml-marks-file-name) "$")))
-	  article)
-      (while articles
-	(setq article (pop articles))
+		    "\\|" (regexp-quote nnml-marks-file-name) "$"))))
+      (dolist (article articles)
 	(when (file-writable-p article)
 	  (nnheader-message 5 "Deleting article %s in %s..." article group)
 	  (funcall nnmail-delete-file-function article))))
@@ -478,12 +499,10 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
       ;; We move the articles file by file instead of renaming
       ;; the directory -- there may be subgroups in this group.
       ;; One might be more clever, I guess.
-      (let ((files (nnml-article-to-file-alist old-dir)))
-	(while files
-	  (rename-file
-	   (concat old-dir (cdar files))
-	   (concat new-dir (cdar files)))
-	  (pop files)))
+      (dolist (file (nnheader-article-to-file-alist old-dir))
+	(rename-file
+	 (concat old-dir (cdr file))
+	 (concat new-dir (cdr file))))
       ;; Move .overview file.
       (let ((overview (concat old-dir nnml-nov-file-name)))
 	(when (file-exists-p overview)
@@ -522,16 +541,19 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
 (defun nnml-article-to-file (article)
   (nnml-update-file-alist)
   (let (file)
-    (if (setq file (cdr (assq article nnml-article-file-alist)))
+    (if (setq file
+	      (if nnml-use-compressed-files
+		  (cdr (assq article nnml-article-file-alist))
+		(number-to-string article)))
 	(expand-file-name file nnml-current-directory)
-      (if (not nnheader-directory-files-is-safe)
-	  ;; Just to make sure nothing went wrong when reading over NFS --
-	  ;; check once more.
-	  (when (file-exists-p
-		 (setq file (expand-file-name (number-to-string article)
-					      nnml-current-directory)))
-	    (nnml-update-file-alist t)
-	    file)))))
+      (when (not nnheader-directory-files-is-safe)
+	;; Just to make sure nothing went wrong when reading over NFS --
+	;; check once more.
+	(when (file-exists-p
+	       (setq file (expand-file-name (number-to-string article)
+					    nnml-current-directory)))
+	  (nnml-update-file-alist t)
+	  file)))))
 
 (defun nnml-deletable-article-p (group article)
   "Say whether ARTICLE in GROUP can be deleted."
@@ -574,7 +596,7 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
 		  (search-forward id nil t)) ; We find the ID.
 	;; And the id is in the fourth field.
 	(if (not (and (search-backward "\t" nil t 4)
-		      (not (search-backward"\t" (gnus-point-at-bol) t))))
+		      (not (search-backward "\t" (point-at-bol) t))))
 	    (forward-line 1)
 	  (beginning-of-line)
 	  (setq found t)
@@ -623,8 +645,14 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
 
 (defun nnml-save-mail (group-art)
   "Called narrowed to an article."
-  (let (chars headers)
+  (let (chars headers extension)
     (setq chars (nnmail-insert-lines))
+    (setq extension
+         (and nnml-use-compressed-files
+	      (> chars nnml-compressed-files-size-threshold)
+	      (if (stringp nnml-use-compressed-files)
+		  nnml-use-compressed-files
+		".gz")))
     (nnmail-insert-xref group-art)
     (run-hooks 'nnmail-prepare-save-mail-hook)
     (run-hooks 'nnml-prepare-save-mail-hook)
@@ -639,7 +667,8 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
 	(nnml-possibly-create-directory (caar ga))
 	(let ((file (concat (nnmail-group-pathname
 			     (caar ga) nnml-directory)
-			    (int-to-string (cdar ga)))))
+			    (int-to-string (cdar ga))
+			    extension)))
 	  (if first
 	      ;; It was already saved, so we just make a hard link.
 	      (funcall nnmail-crosspost-link-function first file t)
@@ -672,7 +701,7 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
       (unless nnml-article-file-alist
 	(setq nnml-article-file-alist
 	      (sort
-	       (nnml-article-to-file-alist nnml-current-directory)
+	       (nnml-current-group-article-to-file-alist)
 	       'car-less-than-car)))
       (setq active
 	    (if nnml-article-file-alist
@@ -696,7 +725,7 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
     (nnheader-insert-nov headers)))
 
 (defsubst nnml-header-value ()
-  (buffer-substring (match-end 0) (progn (end-of-line) (point))))
+  (buffer-substring (match-end 0) (point-at-eol)))
 
 (defun nnml-parse-head (chars &optional number)
   "Parse the head of the current buffer."
@@ -705,14 +734,10 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
       (unless (zerop (buffer-size))
 	(narrow-to-region
 	 (goto-char (point-min))
-	 (if (search-forward "\n\n" nil t) (1- (point)) (point-max))))
-      ;; Fold continuation lines.
-      (goto-char (point-min))
-      (while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
-	(replace-match " " t t))
-      ;; Remove any tabs; they are too confusing.
-      (subst-char-in-region (point-min) (point-max) ?\t ? )
-      (let ((headers (nnheader-parse-head t)))
+	 (if (re-search-forward "\n\r?\n" nil t)
+	     (1- (point))
+	   (point-max))))
+      (let ((headers (nnheader-parse-naked-head)))
 	(mail-header-set-chars headers chars)
 	(mail-header-set-number headers number)
 	headers))))
@@ -742,8 +767,8 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
       (when (buffer-name (cdar nnml-nov-buffer-alist))
 	(set-buffer (cdar nnml-nov-buffer-alist))
 	(when (buffer-modified-p)
-	  (nnmail-write-region 1 (point-max) nnml-nov-buffer-file-name
-			       nil 'nomesg))
+	  (nnmail-write-region (point-min) (point-max)
+			       nnml-nov-buffer-file-name nil 'nomesg))
 	(set-buffer-modified-p nil)
 	(kill-buffer (current-buffer)))
       (setq nnml-nov-buffer-alist (cdr nnml-nov-buffer-alist)))))
@@ -759,24 +784,24 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
     (nnml-open-server server))
   (setq nnml-directory (expand-file-name nnml-directory))
   ;; Recurse down the directories.
-  (nnml-generate-nov-databases-1 nnml-directory nil t)
+  (nnml-generate-nov-databases-directory nnml-directory nil t)
   ;; Save the active file.
   (nnmail-save-active nnml-group-alist nnml-active-file))
 
-(defun nnml-generate-nov-databases-1 (dir &optional seen no-active)
-  "Regenerate the NOV database in DIR."
+(defun nnml-generate-nov-databases-directory (dir &optional seen no-active)
+  "Regenerate the NOV database in DIR.
+
+Unless no-active is non-nil, update the active file too."
   (interactive "DRegenerate NOV in: ")
   (setq dir (file-name-as-directory dir))
   ;; Only scan this sub-tree if we haven't been here yet.
   (unless (member (file-truename dir) seen)
     (push (file-truename dir) seen)
     ;; We descend recursively
-    (let ((dirs (directory-files dir t nil t))
-	  dir)
-      (while (setq dir (pop dirs))
-	(when (and (not (string-match "^\\." (file-name-nondirectory dir)))
-		   (file-directory-p dir))
-	  (nnml-generate-nov-databases-1 dir seen))))
+    (dolist (dir (directory-files dir t nil t))
+      (when (and (not (string-match "^\\." (file-name-nondirectory dir)))
+		 (file-directory-p dir))
+	(nnml-generate-nov-databases-directory dir seen)))
     ;; Do this directory.
     (let ((files (sort (nnheader-article-to-file-alist dir)
 		       'car-less-than-car)))
@@ -803,9 +828,7 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
     (push (list group
 		(cons (or (caar files) (1+ last))
 		      (max last
-			   (or (let ((f files))
-				 (while (cdr f) (setq f (cdr f)))
-				 (caar f))
+			   (or (caar (last files))
 			       0))))
 	  nnml-group-alist)))
 
@@ -830,9 +853,9 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
 	  (narrow-to-region
 	   (goto-char (point-min))
 	   (progn
-	     (search-forward "\n\n" nil t)
+	     (re-search-forward "\n\r?\n" nil t)
 	     (setq chars (- (point-max) (point)))
-	     (max 1 (1- (point)))))
+	     (max (point-min) (1- (point)))))
 	  (unless (zerop (buffer-size))
 	    (goto-char (point-min))
 	    (setq headers (nnml-parse-head chars (caar files)))
@@ -844,7 +867,7 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
 	(setq files (cdr files)))
       (save-excursion
 	(set-buffer nov-buffer)
-	(nnmail-write-region 1 (point-max) nov nil 'nomesg)
+	(nnmail-write-region (point-min) (point-max) nov nil 'nomesg)
 	(kill-buffer (current-buffer))))))
 
 (defun nnml-nov-delete-article (group article)
@@ -864,10 +887,11 @@ This variable is a virtual server slot.  See the Gnus manual for details.")
     t))
 
 (defun nnml-update-file-alist (&optional force)
-  (when (or (not nnml-article-file-alist)
-	    force)
-    (setq nnml-article-file-alist
-	  (nnml-article-to-file-alist nnml-current-directory))))
+  (when nnml-use-compressed-files
+    (when (or (not nnml-article-file-alist)
+	      force)
+      (setq nnml-article-file-alist
+	    (nnml-current-group-article-to-file-alist)))))
 
 (defun nnml-directory-articles (dir)
   "Return a list of all article files in a directory.
@@ -891,10 +915,12 @@ Use the nov database for that directory if available."
 	  (forward-line 1))
 	list))))
 
-(defun nnml-article-to-file-alist (dir)
-  "Return an alist of article/file pairs in DIR.
-Use the nov database for that directory if available."
-  (if (or gnus-nov-is-evil nnml-nov-is-evil
+(defun nnml-current-group-article-to-file-alist ()
+  "Return an alist of article/file pairs in the current group.
+Use the nov database for the current group if available."
+  (if (or nnml-use-compressed-files
+	  gnus-nov-is-evil
+	  nnml-nov-is-evil
 	  (not (file-exists-p
 		(expand-file-name nnml-nov-file-name
 				  nnml-current-directory))))
@@ -902,8 +928,8 @@ Use the nov database for that directory if available."
     ;; build list from .overview if available
     (save-excursion
       (let ((alist nil)
-	    art
-	    (buffer (nnml-get-nov-buffer nnml-current-group)))
+	    (buffer (nnml-get-nov-buffer nnml-current-group))
+	    art)
 	(set-buffer buffer)
 	(goto-char (point-min))
 	(while (not (eobp))
@@ -921,7 +947,7 @@ Use the nov database for that directory if available."
       (let ((range (nth 0 action))
 	    (what  (nth 1 action))
 	    (marks (nth 2 action)))
-	(assert (or (eq what 'add) (eq what 'del)) t
+	(assert (or (eq what 'add) (eq what 'del)) nil
 		"Unknown request-set-mark action: %s" what)
 	(dolist (mark marks)
 	  (setq nnml-marks (gnus-update-alist-soft
@@ -935,27 +961,37 @@ Use the nov database for that directory if available."
 
 (deffoo nnml-request-update-info (group info &optional server)
   (nnml-possibly-change-directory group server)
-  (unless nnml-marks-is-evil
+  (when (and (not nnml-marks-is-evil) (nnml-marks-changed-p group))
     (nnheader-message 8 "Updating marks for %s..." group)
     (nnml-open-marks group server)
     ;; Update info using `nnml-marks'.
-    (mapcar (lambda (pred)
+    (mapc (lambda (pred)
+	    (unless (memq (cdr pred) gnus-article-unpropagated-mark-lists)
 	      (gnus-info-set-marks
 	       info
 	       (gnus-update-alist-soft
 		(cdr pred)
 		(cdr (assq (cdr pred) nnml-marks))
 		(gnus-info-marks info))
-	       t))
-	    gnus-article-mark-lists)
+	       t)))
+	  gnus-article-mark-lists)
     (let ((seen (cdr (assq 'read nnml-marks))))
       (gnus-info-set-read info
 			  (if (and (integerp (car seen))
 				   (null (cdr seen)))
 			      (list (cons (car seen) (car seen)))
-			    seen))))
+			    seen)))
+    (nnheader-message 8 "Updating marks for %s...done" group))
   info)
 
+(defun nnml-marks-changed-p (group)
+  (let ((file (expand-file-name nnml-marks-file-name
+				(nnmail-group-pathname group nnml-directory))))
+    (if (null (gnus-gethash file nnml-marks-modtime))
+	t ;; never looked at marks file, assume it has changed
+      (not (equal (gnus-gethash file nnml-marks-modtime)
+		  (nth 5 (file-attributes file)))))))
+
 (defun nnml-save-marks (group server)
   (let ((file-name-coding-system nnmail-pathname-coding-system)
 	(file (expand-file-name nnml-marks-file-name
@@ -965,24 +1001,31 @@ Use the nov database for that directory if available."
 	  (nnml-possibly-create-directory group)
 	  (with-temp-file file
 	    (erase-buffer)
-	    (princ nnml-marks (current-buffer))
-	    (insert "\n")))
+	    (gnus-prin1 nnml-marks)
+	    (insert "\n"))
+	  (gnus-sethash file
+			(nth 5 (file-attributes file))
+			nnml-marks-modtime))
       (error (or (gnus-yes-or-no-p
 		  (format "Could not write to %s (%s).  Continue? " file err))
-		 (error "Cannot write to %s (%s)" err))))))
+		 (error "Cannot write to %s (%s)" file err))))))
 
 (defun nnml-open-marks (group server)
-  (let ((file (expand-file-name 
-	       nnml-marks-file-name 
+  (let ((file (expand-file-name
+	       nnml-marks-file-name
 	       (nnmail-group-pathname group nnml-directory))))
     (if (file-exists-p file)
-	(setq nnml-marks (condition-case err
-			     (with-temp-buffer
-			       (nnheader-insert-file-contents file)
-			       (read (current-buffer)))
-			   (error (or (gnus-yes-or-no-p
-				       (format "Error reading nnml marks file %s (%s).  Continuing will use marks from .newsrc.eld.  Continue? " file err))
-				      (error "Cannot read nnml marks file %s (%s)" file err)))))
+	(condition-case err
+	    (with-temp-buffer
+	      (gnus-sethash file (nth 5 (file-attributes file))
+			    nnml-marks-modtime)
+	      (nnheader-insert-file-contents file)
+	      (setq nnml-marks (read (current-buffer)))
+	      (dolist (el gnus-article-unpropagated-mark-lists)
+		(setq nnml-marks (gnus-remassoc el nnml-marks))))
+	  (error (or (gnus-yes-or-no-p
+		      (format "Error reading nnml marks file %s (%s).  Continuing will use marks from .newsrc.eld.  Continue? " file err))
+		     (error "Cannot read nnml marks file %s (%s)" file err))))
       ;; User didn't have a .marks file.  Probably first time
       ;; user of the .marks stuff.  Bootstrap it from .newsrc.eld.
       (let ((info (gnus-get-info
@@ -992,8 +1035,205 @@ Use the nov database for that directory if available."
 	(nnheader-message 7 "Bootstrapping marks for %s..." group)
 	(setq nnml-marks (gnus-info-marks info))
 	(push (cons 'read (gnus-info-read info)) nnml-marks)
-	(nnml-save-marks group server)))))
+	(dolist (el gnus-article-unpropagated-mark-lists)
+	  (setq nnml-marks (gnus-remassoc el nnml-marks)))
+	(nnml-save-marks group server)
+	(nnheader-message 7 "Bootstrapping marks for %s...done" group)))))
+
+
+;;;
+;;; Group and server compaction. -- dvl
+;;;
+
+;; #### FIXME: this function handles self Xref: entry correctly, but I don't
+;; #### know how to handle external cross-references. I actually don't know if
+;; #### this is handled correctly elsewhere. For instance, what happens if you
+;; #### move all articles to a new group (that's what people do for manual
+;; #### compaction) ?
+
+;; #### NOTE: the function below handles the article backlog. This is
+;; #### conceptually the wrong place to do it because the backend is at a
+;; #### lower level. However, this is the only place where we have the needed
+;; #### information to do the job. Ideally, this function should not handle
+;; #### the backlog by itself, but return a list of moved groups / articles to
+;; #### the caller. This will become important to avoid code duplication when
+;; #### other backends get a compaction feature. Also, note that invalidating
+;; #### the "original article buffer" is already done at an upper level.
+
+;; Shouldn't `nnml-request-compact-group' be interactive? --rsteib
+
+(defun nnml-request-compact-group (group &optional server save)
+  (nnml-possibly-change-directory group server)
+  (unless nnml-article-file-alist
+    (setq nnml-article-file-alist
+	  (sort (nnml-current-group-article-to-file-alist)
+		'car-less-than-car)))
+  (if (not nnml-article-file-alist)
+      ;; The group is empty: do nothing but return t
+      t
+    ;; The group is not empty:
+    (let* ((group-full-name
+	    (gnus-group-prefixed-name
+	     group
+	     (gnus-server-to-method (format "nnml:%s" server))))
+	   (info (gnus-get-info group-full-name))
+	   (new-number 1)
+	   compacted)
+      (let ((articles nnml-article-file-alist)
+	    article)
+	(while (setq article (pop articles))
+	  (let ((old-number (car article)))
+	    (when (> old-number new-number)
+	      ;; There is a gap here:
+	      (let ((old-number-string (int-to-string old-number))
+		    (new-number-string (int-to-string new-number)))
+		(setq compacted t)
+		;; #### NOTE: `nnml-article-to-file' calls
+		;; #### `nnml-update-file-alist'  (which in turn calls
+		;; #### `nnml-current-group-article-to-file-alist', which
+		;; #### might use the NOV database). This might turn out to be
+		;; #### inefficient. In that case, we will do the work
+		;; #### manually.
+		;; 1/ Move the article to a new file:
+		(let* ((oldfile (nnml-article-to-file old-number))
+		       (newfile
+			(gnus-replace-in-string
+			 oldfile
+			 ;; nnml-use-compressed-files might be any string, but
+			 ;; probably it's sufficient to take into account only
+			 ;; "\\.[a-z0-9]+".  Note that we can't only use the
+			 ;; value of nnml-use-compressed-files because old
+			 ;; articles might have been saved with a different
+			 ;; value.
+			 (concat
+			  "\\(" old-number-string "\\)\\(\\(\\.[a-z0-9]+\\)?\\)$")
+			 (concat new-number-string "\\2"))))
+		  (with-current-buffer nntp-server-buffer
+		    (nnmail-find-file oldfile)
+		    ;; Update the Xref header in the article itself:
+		    (when (and (re-search-forward "^Xref: [^ ]+ " nil t)
+			       (re-search-forward
+				(concat "\\<"
+					(regexp-quote
+					 (concat group ":" old-number-string))
+					"\\>")
+				(point-at-eol) t))
+		      (replace-match
+		       (concat group ":" new-number-string)))
+		    ;; Save to the new file:
+		    (nnmail-write-region (point-min) (point-max) newfile))
+		  (funcall nnmail-delete-file-function oldfile))
+		;; 2/ Update all marks for this article:
+		;; #### NOTE: it is possible that the new article number
+		;; #### already belongs to a range, whereas the corresponding
+		;; #### article doesn't exist (for example, if you delete an
+		;; #### article). For that reason, it is important to update
+		;; #### the ranges (meaning remove inexistant articles) before
+		;; #### doing anything on them.
+		;; 2 a/ read articles:
+		(let ((read (gnus-info-read info)))
+		  (setq read (gnus-remove-from-range read (list new-number)))
+		  (when (gnus-member-of-range old-number read)
+		    (setq read (gnus-remove-from-range read (list old-number)))
+		    (setq read (gnus-add-to-range read (list new-number))))
+		  (gnus-info-set-read info read))
+		;; 2 b/ marked articles:
+		(let ((oldmarks (gnus-info-marks info))
+		      mark newmarks)
+		  (while (setq mark (pop oldmarks))
+		    (setcdr mark (gnus-remove-from-range (cdr mark)
+							 (list new-number)))
+		    (when (gnus-member-of-range old-number (cdr mark))
+		      (setcdr mark (gnus-remove-from-range (cdr mark)
+							   (list old-number)))
+		      (setcdr mark (gnus-add-to-range (cdr mark)
+						      (list new-number))))
+		    (push mark newmarks))
+		  (gnus-info-set-marks info newmarks))
+		;; 3/ Update the NOV entry for this article:
+		(unless nnml-nov-is-evil
+		  (save-excursion
+		    (set-buffer (nnml-open-nov group))
+		    (when (nnheader-find-nov-line old-number)
+		      ;; Replace the article number:
+		      (looking-at old-number-string)
+		      (replace-match new-number-string nil t)
+		      ;; Update the Xref header:
+		      (when (re-search-forward
+			     (concat "\\(Xref:[^\t\n]* \\)\\<"
+				     (regexp-quote
+				      (concat group ":" old-number-string))
+				     "\\>")
+			     (point-at-eol) t)
+			(replace-match
+			 (concat "\\1" group ":" new-number-string))))))
+		;; 4/ Possibly remove the article from the backlog:
+		(when gnus-keep-backlog
+		  ;; #### NOTE: instead of removing the article, we could
+		  ;; #### modify the backlog to reflect the numbering change,
+		  ;; #### but I don't think it's worth it.
+		  (gnus-backlog-remove-article group-full-name old-number)
+		  (gnus-backlog-remove-article group-full-name new-number))))
+	    (setq new-number (1+ new-number)))))
+      (if (not compacted)
+	  ;; No compaction had to be done:
+	  t
+	;; Some articles have actually been renamed:
+	;; 1/ Rebuild active information:
+	(let ((entry (assoc group nnml-group-alist))
+	      (active (cons 1 (1- new-number))))
+	  (setq nnml-group-alist (delq entry nnml-group-alist))
+	  (push (list group active) nnml-group-alist)
+	  ;; Update the active hashtable to let the *Group* buffer display
+	  ;; up-to-date lines. I don't think that either gnus-newsrc-hashtb or
+	  ;; gnus-newwrc-alist are out of date, since all we did is to modify
+	  ;; the info of the group internally.
+	  (gnus-set-active group-full-name active))
+	;; 1 bis/
+	;; #### NOTE: normally, we should save the overview (NOV) file
+	;; #### here, just like we save the marks file. However, there is no
+	;; #### such function as nnml-save-nov for a single group. Only for
+	;; #### all groups. Gnus inconsistency is getting worse every day...
+	;; 2/ Rebuild marks file:
+	(unless nnml-marks-is-evil
+	  ;; #### NOTE: this constant use of global variables everywhere is
+	  ;; #### truly disgusting. Gnus really needs a *major* cleanup.
+	  (setq nnml-marks (gnus-info-marks info))
+	  (push (cons 'read (gnus-info-read info)) nnml-marks)
+	  (dolist (el gnus-article-unpropagated-mark-lists)
+	    (setq nnml-marks (gnus-remassoc el nnml-marks)))
+	  (nnml-save-marks group server))
+	;; 3/ Save everything if this was not part of a bigger operation:
+	(if (not save)
+	    ;; Nothing to save (yet):
+	    t
+	  ;; Something to save:
+	  ;; a/ Save the NOV databases:
+	  ;; #### NOTE: this should be done directory per directory in 1bis
+	  ;; #### above. See comment there.
+	  (nnml-save-nov)
+	  ;; b/ Save the active file:
+	  (nnmail-save-active nnml-group-alist nnml-active-file)
+	  t)))))
+
+(defun nnml-request-compact (&optional server)
+  "Request compaction of all SERVER nnml groups."
+  (interactive (list (or (nnoo-current-server 'nnml) "")))
+  (nnmail-activate 'nnml)
+  (unless (nnml-server-opened server)
+    (nnml-open-server server))
+  (setq nnml-directory (expand-file-name nnml-directory))
+  (let* ((groups (gnus-groups-from-server
+		  (gnus-server-to-method (format "nnml:%s" server))))
+	 (first (pop groups))
+	 group)
+    (when first
+      (while (setq group (pop groups))
+	(nnml-request-compact-group (gnus-group-real-name group) server))
+      (nnml-request-compact-group (gnus-group-real-name first) server t))))
+
 
 (provide 'nnml)
 
+;;; arch-tag: 52c97dc3-9735-45de-b439-9e4d23b52004
 ;;; nnml.el ends here