X-Git-Url: https://cgit.sxemacs.org/?a=blobdiff_plain;f=lisp%2Fnnml.el;h=ed3e3650404899ec0c56a5fc667d1fa75a3e1b4c;hb=9bff3e1ed66aee0c93773573fc662b10c4b72a1b;hp=a391b73d73698f6fe5c9994134de81720039523e;hpb=842a9816a058067683d2a91db8770b32f1730889;p=gnus

diff --git a/lisp/nnml.el b/lisp/nnml.el
index a391b73d7..ed3e36504 100644
--- a/lisp/nnml.el
+++ b/lisp/nnml.el
@@ -1,7 +1,7 @@
 ;;; nnml.el --- mail spool access for Gnus
-;; Copyright (C) 1995,96,97 Free Software Foundation, Inc.
+;; Copyright (C) 1995,96,97,98,99 Free Software Foundation, Inc.
 
-;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
+;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
 ;; 	Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>
 ;; Keywords: news, mail
 
@@ -26,25 +26,25 @@
 
 ;; Based on nnspool.el by Masanobu UMEDA <umerin@flab.flab.fujitsu.junet>.
 ;; For an overview of what the interface functions do, please see the
-;; Gnus sources.  
+;; Gnus sources.
 
 ;;; Code:
 
 (require 'nnheader)
 (require 'nnmail)
 (require 'nnoo)
-(require 'cl)
+(eval-when-compile (require 'cl))
 
 (nnoo-declare nnml)
 
 (defvoo nnml-directory message-directory
-  "Mail spool directory.")
+  "Spool directory for the nnml mail backend.")
 
-(defvoo nnml-active-file 
+(defvoo nnml-active-file
   (concat (file-name-as-directory nnml-directory) "active")
   "Mail active file.")
 
-(defvoo nnml-newsgroups-file 
+(defvoo nnml-newsgroups-file
   (concat (file-name-as-directory nnml-directory) "newsgroups")
   "Mail newsgroups description file.")
 
@@ -84,68 +84,66 @@ all.  This may very well take some time.")
 
 (defvoo nnml-generate-active-function 'nnml-generate-active-info)
 
+(defvar nnml-nov-buffer-file-name nil)
+
+(defvoo nnml-file-coding-system nnmail-file-coding-system-1)
+
 
 
 ;;; Interface functions.
 
 (nnoo-define-basics nnml)
 
-(deffoo nnml-retrieve-headers (sequence &optional newsgroup server fetch-old)
-  (save-excursion
-    (set-buffer nntp-server-buffer)
-    (erase-buffer)
-    (let ((file nil)
-	  (number (length sequence))
-	  (count 0)
-	  beg article)
-      (if (stringp (car sequence))
-	  'headers
-	(nnml-possibly-change-directory newsgroup server)
-	(unless nnml-article-file-alist
-	  (setq nnml-article-file-alist
-		(nnheader-article-to-file-alist nnml-current-directory)))
-	(if (nnml-retrieve-headers-with-nov sequence fetch-old)
-	    'nov
-	  (while sequence
-	    (setq article (car sequence))
-	    (setq file 
-		  (concat nnml-current-directory 
-			  (or (cdr (assq article nnml-article-file-alist))
-			      "")))
-	    (when (and (file-exists-p file)
-		       (not (file-directory-p file)))
-	      (insert (format "221 %d Article retrieved.\n" article))
-	      (setq beg (point))
-	      (nnheader-insert-head file)
-	      (goto-char beg)
-	      (if (search-forward "\n\n" nil t)
-		  (forward-char -1)
-		(goto-char (point-max))
-		(insert "\n\n"))
-	      (insert ".\n")
-	      (delete-region (point) (point-max)))
-	    (setq sequence (cdr sequence))
-	    (setq count (1+ count))
+(deffoo nnml-retrieve-headers (sequence &optional group server fetch-old)
+  (when (nnml-possibly-change-directory group server)
+    (save-excursion
+      (set-buffer nntp-server-buffer)
+      (erase-buffer)
+      (let ((file nil)
+	    (number (length sequence))
+	    (count 0)
+	    (pathname-coding-system 'binary)
+	    beg article)
+	(if (stringp (car sequence))
+	    'headers
+	  (if (nnml-retrieve-headers-with-nov sequence fetch-old)
+	      'nov
+	    (while sequence
+	      (setq article (car sequence))
+	      (setq file (nnml-article-to-file article))
+	      (when (and file
+			 (file-exists-p file)
+			 (not (file-directory-p file)))
+		(insert (format "221 %d Article retrieved.\n" article))
+		(setq beg (point))
+		(nnheader-insert-head file)
+		(goto-char beg)
+		(if (search-forward "\n\n" nil t)
+		    (forward-char -1)
+		  (goto-char (point-max))
+		  (insert "\n\n"))
+		(insert ".\n")
+		(delete-region (point) (point-max)))
+	      (setq sequence (cdr sequence))
+	      (setq count (1+ count))
+	      (and (numberp nnmail-large-newsgroup)
+		   (> number nnmail-large-newsgroup)
+		   (zerop (% count 20))
+		   (nnheader-message 6 "nnml: Receiving headers... %d%%"
+				     (/ (* count 100) number))))
+
 	    (and (numberp nnmail-large-newsgroup)
 		 (> number nnmail-large-newsgroup)
-		 (zerop (% count 20))
-		 (nnheader-message 6 "nnml: Receiving headers... %d%%"
-				   (/ (* count 100) number))))
+		 (nnheader-message 6 "nnml: Receiving headers...done"))
 
-	  (and (numberp nnmail-large-newsgroup)
-	       (> number nnmail-large-newsgroup)
-	       (nnheader-message 6 "nnml: Receiving headers...done"))
-
-	  (nnheader-fold-continuation-lines)
-	  'headers)))))
+	    (nnheader-fold-continuation-lines)
+	    'headers))))))
 
 (deffoo nnml-open-server (server &optional defs)
   (nnoo-change-server 'nnml server defs)
   (when (not (file-exists-p nnml-directory))
-    (condition-case ()
-	(make-directory nnml-directory t)
-      (error)))
-  (cond 
+    (ignore-errors (make-directory nnml-directory t)))
+  (cond
    ((not (file-exists-p nnml-directory))
     (nnml-close-server)
     (nnheader-report 'nnml "Couldn't create directory: %s" nnml-directory))
@@ -159,11 +157,13 @@ all.  This may very well take some time.")
 
 (defun nnml-request-regenerate (server)
   (nnml-possibly-change-directory nil server)
-  (nnml-generate-nov-databases))
+  (nnml-generate-nov-databases)
+  t)
 
-(deffoo nnml-request-article (id &optional newsgroup server buffer)
-  (nnml-possibly-change-directory newsgroup server)
+(deffoo nnml-request-article (id &optional group server buffer)
+  (nnml-possibly-change-directory group server)
   (let* ((nntp-server-buffer (or buffer nntp-server-buffer))
+	 (pathname-coding-system 'binary)
 	 path gpath group-num)
     (if (stringp id)
 	(when (and (setq group-num (nnml-find-group-number id))
@@ -176,42 +176,46 @@ all.  This may very well take some time.")
 				  nnml-directory))))))
 	  (setq path (concat gpath (int-to-string (cdr group-num)))))
       (setq path (nnml-article-to-file id)))
-    (cond 
+    (cond
      ((not path)
       (nnheader-report 'nnml "No such article: %s" id))
      ((not (file-exists-p path))
       (nnheader-report 'nnml "No such file: %s" path))
      ((file-directory-p path)
       (nnheader-report 'nnml "File is a directory: %s" path))
-     ((not (save-excursion (nnmail-find-file path)))
+     ((not (save-excursion (let ((nnmail-file-coding-system
+				  nnml-file-coding-system))
+			     (nnmail-find-file path))))
       (nnheader-report 'nnml "Couldn't read file: %s" path))
      (t
       (nnheader-report 'nnml "Article %s retrieved" id)
       ;; We return the article number.
-      (cons newsgroup (string-to-int (file-name-nondirectory path)))))))
+      (cons (if group-num (car group-num) group)
+	    (string-to-int (file-name-nondirectory path)))))))
 
 (deffoo nnml-request-group (group &optional server dont-check)
-  (cond 
-   ((not (nnml-possibly-change-directory group server))
-    (nnheader-report 'nnml "Invalid group (no such directory)"))
-   ((not (file-exists-p nnml-current-directory))
-    (nnheader-report 'nnml "Directory %s does not exist"
-		     nnml-current-directory))
-   ((not (file-directory-p nnml-current-directory))
-    (nnheader-report 'nnml "%s is not a directory" nnml-current-directory))
-   (dont-check 
-    (nnheader-report 'nnml "Group %s selected" group)
-    t)
-   (t
-    (nnheader-re-read-dir nnml-current-directory)
-    (nnmail-activate 'nnml)
-    (let ((active (nth 1 (assoc group nnml-group-alist))))
-      (if (not active)
-	  (nnheader-report 'nnml "No such group: %s" group)
-	(nnheader-report 'nnml "Selected group %s" group)
-	(nnheader-insert "211 %d %d %d %s\n" 
-			 (max (1+ (- (cdr active) (car active))) 0)
-			 (car active) (cdr active) group))))))
+  (let ((pathname-coding-system 'binary))
+    (cond
+     ((not (nnml-possibly-change-directory group server))
+      (nnheader-report 'nnml "Invalid group (no such directory)"))
+     ((not (file-exists-p nnml-current-directory))
+      (nnheader-report 'nnml "Directory %s does not exist"
+		       nnml-current-directory))
+     ((not (file-directory-p nnml-current-directory))
+      (nnheader-report 'nnml "%s is not a directory" nnml-current-directory))
+     (dont-check
+      (nnheader-report 'nnml "Group %s selected" group)
+      t)
+     (t
+      (nnheader-re-read-dir nnml-current-directory)
+      (nnmail-activate 'nnml)
+      (let ((active (nth 1 (assoc group nnml-group-alist))))
+	(if (not active)
+	    (nnheader-report 'nnml "No such group: %s" group)
+	  (nnheader-report 'nnml "Selected group %s" group)
+	  (nnheader-insert "211 %d %d %d %s\n"
+			   (max (1+ (- (cdr active) (car active))) 0)
+			   (car active) (cdr active) group)))))))
 
 (deffoo nnml-request-scan (&optional group server)
   (setq nnml-article-file-alist nil)
@@ -223,8 +227,16 @@ all.  This may very well take some time.")
   t)
 
 (deffoo nnml-request-create-group (group &optional server args)
+  (nnml-possibly-change-directory nil server)
   (nnmail-activate 'nnml)
-  (unless (assoc group nnml-group-alist)
+  (cond
+   ((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)))
 	    nnml-group-alist)
@@ -234,12 +246,14 @@ all.  This may very well take some time.")
 	(when articles
 	  (setcar active (apply 'min articles))
 	  (setcdr active (apply 'max articles))))
-      (nnmail-save-active nnml-group-alist nnml-active-file)))
-  t)
+      (nnmail-save-active nnml-group-alist nnml-active-file)
+      t))))
 
 (deffoo nnml-request-list (&optional server)
   (save-excursion
-    (nnmail-find-file nnml-active-file)
+    (let ((nnmail-file-coding-system nnmail-active-file-coding-system)
+	  (pathname-coding-system 'binary))
+      (nnmail-find-file nnml-active-file))
     (setq nnml-group-alist (nnmail-get-active))
     t))
 
@@ -250,40 +264,38 @@ all.  This may very well take some time.")
   (save-excursion
     (nnmail-find-file nnml-newsgroups-file)))
 
-(deffoo nnml-request-expire-articles (articles newsgroup
+(deffoo nnml-request-expire-articles (articles group
 					       &optional server force)
-  (nnml-possibly-change-directory newsgroup server)
-  (let* ((active-articles 
-	  (nnheader-directory-articles nnml-current-directory))
-	 (is-old t)
-	 article rest mod-time number)
+  (nnml-possibly-change-directory group server)
+  (let ((active-articles
+	 (nnheader-directory-articles nnml-current-directory))
+	(is-old t)
+	article rest mod-time number)
     (nnmail-activate 'nnml)
 
-    (unless nnml-article-file-alist
-      (setq nnml-article-file-alist
-	    (nnheader-article-to-file-alist nnml-current-directory)))
+    (setq active-articles (sort active-articles '<))
+    ;; Articles not listed in active-articles are already gone,
+    ;; so don't try to expire them.
+    (setq articles (gnus-sorted-intersection articles active-articles))
 
     (while (and articles is-old)
-      (when (setq article
-		  (assq (setq number (pop articles)) 
-			nnml-article-file-alist))
-	(setq article (concat nnml-current-directory (cdr article)))
+      (when (setq article (nnml-article-to-file (setq number (pop articles))))
 	(when (setq mod-time (nth 5 (file-attributes article)))
-	  (if (and (nnml-deletable-article-p newsgroup number)
-		   (setq is-old 
-			 (nnmail-expired-article-p newsgroup mod-time force
+	  (if (and (nnml-deletable-article-p group number)
+		   (setq is-old
+			 (nnmail-expired-article-p group mod-time force
 						   nnml-inhibit-expiry)))
 	      (progn
 		(nnheader-message 5 "Deleting article %s in %s"
-				  article newsgroup)
+				  article 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 newsgroup number))
+		(nnml-nov-delete-article group number))
 	    (push number rest)))))
-    (let ((active (nth 1 (assoc newsgroup nnml-group-alist))))
+    (let ((active (nth 1 (assoc group nnml-group-alist))))
       (when active
 	(setcar active (or (and active-articles
 				(apply 'min active-articles))
@@ -292,15 +304,13 @@ all.  This may very well take some time.")
     (nnml-save-nov)
     (nconc rest articles)))
 
-(deffoo nnml-request-move-article 
+(deffoo nnml-request-move-article
   (article group server accept-form &optional last)
   (let ((buf (get-buffer-create " *nnml move*"))
 	result)
     (nnml-possibly-change-directory group server)
-    (unless nnml-article-file-alist
-      (setq nnml-article-file-alist
-	    (nnheader-article-to-file-alist nnml-current-directory)))
-    (and 
+    (nnml-update-file-alist)
+    (and
      (nnml-deletable-article-p group article)
      (nnml-request-article article group server)
      (save-excursion
@@ -313,32 +323,39 @@ all.  This may very well take some time.")
        (nnml-possibly-change-directory group server)
        (condition-case ()
 	   (funcall nnmail-delete-file-function
-		    (concat nnml-current-directory 
-			    (int-to-string article)))
+		    (nnml-article-to-file  article))
 	 (file-error nil))
        (nnml-nov-delete-article group article)
-       (and last (nnml-save-nov))))
+       (when last
+	 (nnml-save-nov)
+	 (nnmail-save-active nnml-group-alist nnml-active-file))))
     result))
 
 (deffoo nnml-request-accept-article (group &optional server last)
   (nnml-possibly-change-directory group server)
   (nnmail-check-syntax)
   (let (result)
+    (when nnmail-cache-accepted-message-ids
+      (nnmail-cache-insert (nnmail-fetch-field "message-id")))
     (if (stringp group)
-	(and 
+	(and
 	 (nnmail-activate 'nnml)
-	 (setq result (car (nnml-save-mail 
+	 (setq result (car (nnml-save-mail
 			    (list (cons group (nnml-active-number group))))))
 	 (progn
 	   (nnmail-save-active nnml-group-alist nnml-active-file)
 	   (and last (nnml-save-nov))))
       (and
        (nnmail-activate 'nnml)
-       (setq result (car (nnml-save-mail
-			  (nnmail-article-group 'nnml-active-number))))
-       (progn
+       (if (and (not (setq result (nnmail-article-group 'nnml-active-number)))
+		(yes-or-no-p "Moved to `junk' group; delete article? "))
+	   (setq result 'junk)
+	 (setq result (car (nnml-save-mail result))))
+       (when last
 	 (nnmail-save-active nnml-group-alist nnml-active-file)
-	 (and last (nnml-save-nov)))))
+	 (when nnmail-cache-accepted-message-ids
+	   (nnmail-cache-close))
+	 (nnml-save-nov))))
     result))
 
 (deffoo nnml-request-replace-article (article group buffer)
@@ -349,18 +366,17 @@ all.  This may very well take some time.")
     (let ((chars (nnmail-insert-lines))
 	  (art (concat (int-to-string article) "\t"))
 	  headers)
-      (when (condition-case ()
-		(progn
-		  (nnmail-write-region 
-		   (point-min) (point-max)
+      (when (ignore-errors
+	      (nnmail-write-region
+	       (point-min) (point-max)
+	       (or (nnml-article-to-file article)
 		   (concat nnml-current-directory
-			   (int-to-string article))
-		   nil (if (nnheader-be-verbose 5) nil 'nomesg))
-		  t)
-	      (error nil))
+			   (int-to-string article)))
+	       nil (if (nnheader-be-verbose 5) nil 'nomesg))
+	      t)
 	(setq headers (nnml-parse-head chars article))
 	;; Replace the NOV line in the NOV file.
-	(save-excursion 
+	(save-excursion
 	  (set-buffer (nnml-open-nov group))
 	  (goto-char (point-min))
 	  (if (or (looking-at art)
@@ -372,8 +388,8 @@ all.  This may very well take some time.")
 	    ;; 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 
-			    (buffer-substring 
+			(< (string-to-int
+			    (buffer-substring
 			     (match-beginning 0) (match-end 0)))
 			   article)
 			(zerop (forward-line 1)))))
@@ -386,23 +402,21 @@ all.  This may very well take some time.")
   (nnml-possibly-change-directory group server)
   (when force
     ;; Delete all articles in GROUP.
-    (let ((articles 
-	   (directory-files 
+    (let ((articles
+	   (directory-files
 	    nnml-current-directory t
 	    (concat nnheader-numerical-short-files
 		    "\\|" (regexp-quote nnml-nov-file-name) "$")))
 	  article)
-      (while articles 
+      (while articles
 	(setq article (pop articles))
 	(when (file-writable-p article)
 	  (nnheader-message 5 "Deleting article %s in %s..." article group)
 	  (funcall nnmail-delete-file-function article))))
     ;; Try to delete the directory itself.
-    (condition-case ()
-	(delete-directory nnml-current-directory)
-      (error nil)))
+    (ignore-errors (delete-directory nnml-current-directory)))
   ;; Remove the group from all structures.
-  (setq nnml-group-alist 
+  (setq nnml-group-alist
 	(delq (assoc group nnml-group-alist) nnml-group-alist)
 	nnml-current-group nil
 	nnml-current-directory nil)
@@ -414,17 +428,15 @@ all.  This may very well take some time.")
   (nnml-possibly-change-directory group server)
   (let ((new-dir (nnmail-group-pathname new-name nnml-directory))
 	(old-dir (nnmail-group-pathname group nnml-directory)))
-    (when (condition-case ()
-	      (progn
-		(make-directory new-dir t)
-		t)
-	    (error nil))
+    (when (ignore-errors
+	    (make-directory new-dir t)
+	    t)
       ;; 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 (nnheader-article-to-file-alist old-dir)))
 	(while files
-	  (rename-file 
+	  (rename-file
 	   (concat old-dir (cdar files))
 	   (concat new-dir (cdar files)))
 	  (pop files)))
@@ -433,9 +445,7 @@ all.  This may very well take some time.")
 	(when (file-exists-p overview)
 	  (rename-file overview (concat new-dir nnml-nov-file-name))))
       (when (<= (length (directory-files old-dir)) 2)
-	(condition-case ()
-	    (delete-directory old-dir)
-	  (error nil)))
+	(ignore-errors (delete-directory old-dir)))
       ;; That went ok, so we change the internal structures.
       (let ((entry (assoc group nnml-group-alist)))
 	(when entry
@@ -453,7 +463,7 @@ all.  This may very well take some time.")
      ((not (file-exists-p file))
       (nnheader-report 'nnml "File %s does not exist" file))
      (t
-      (nnheader-temp-write file
+      (with-temp-file file
 	(nnheader-insert-file-contents file)
 	(nnmail-replace-status name value))
       t))))
@@ -462,33 +472,36 @@ all.  This may very well take some time.")
 ;;; Internal functions.
 
 (defun nnml-article-to-file (article)
-  (unless nnml-article-file-alist
-    (setq nnml-article-file-alist
-	  (nnheader-article-to-file-alist nnml-current-directory)))
+  (nnml-update-file-alist)
   (let (file)
-    (when (setq file (cdr (assq article nnml-article-file-alist)))
-      (concat nnml-current-directory file))))
+    (if (setq file (cdr (assq article nnml-article-file-alist)))
+	(concat nnml-current-directory file)
+      ;; 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."
-  (let (file path)
-    (when (setq file (cdr (assq article nnml-article-file-alist)))
-      (setq path (concat nnml-current-directory file))
+  (let (path)
+    (when (setq path (nnml-article-to-file article))
       (when (file-writable-p path)
 	(or (not nnmail-keep-last-article)
 	    (not (eq (cdr (nth 1 (assoc group nnml-group-alist)))
 		     article)))))))
 
-;; Find an article number in the current group given the Message-ID. 
+;; Find an article number in the current group given the Message-ID.
 (defun nnml-find-group-number (id)
   (save-excursion
     (set-buffer (get-buffer-create " *nnml id*"))
-    (buffer-disable-undo (current-buffer))
     (let ((alist nnml-group-alist)
 	  number)
       ;; We want to look through all .overview files, but we want to
       ;; start with the one in the current directory.  It seems most
-      ;; likely that the article we are looking for is in that group. 
+      ;; likely that the article we are looking for is in that group.
       (if (setq number (nnml-find-id nnml-current-group id))
 	  (cons nnml-current-group number)
 	;; It wasn't there, so we look through the other groups as well.
@@ -518,9 +531,7 @@ all.  This may very well take some time.")
 	  (setq found t)
 	  ;; We return the article number.
 	  (setq number
-		(condition-case ()
-		    (read (current-buffer))
-		  (error nil)))))
+		(ignore-errors (read (current-buffer))))))
       number)))
 
 (defun nnml-retrieve-headers-with-nov (articles &optional fetch-old)
@@ -545,25 +556,22 @@ all.  This may very well take some time.")
   (when (and server
 	     (not (nnml-server-opened server)))
     (nnml-open-server server))
-  (when group
-    (let ((pathname (nnmail-group-pathname group nnml-directory)))
+  (if (not group)
+      t
+    (let ((pathname (nnmail-group-pathname group nnml-directory))
+	  (pathname-coding-system 'binary))
       (when (not (equal pathname nnml-current-directory))
 	(setq nnml-current-directory pathname
 	      nnml-current-group group
-	      nnml-article-file-alist nil))))
-  t)
+	      nnml-article-file-alist nil))
+      (file-exists-p nnml-current-directory))))
 
 (defun nnml-possibly-create-directory (group)
-  (let (dir dirs)
-    (setq dir (nnmail-group-pathname group nnml-directory))
-    (while (not (file-directory-p dir))
-      (push dir dirs)
-      (setq dir (file-name-directory (directory-file-name dir))))
-    (while dirs
-      (make-directory (directory-file-name (car dirs)))
-      (nnheader-message 5 "Creating mail directory %s" (car dirs))
-      (setq dirs (cdr dirs)))))
-	     
+  (let ((dir (nnmail-group-pathname group nnml-directory)))
+    (unless (file-exists-p dir)
+      (make-directory (directory-file-name dir) t)
+      (nnheader-message 5 "Creating mail directory %s" dir))))
+
 (defun nnml-save-mail (group-art)
   "Called narrowed to an article."
   (let (chars headers)
@@ -575,25 +583,25 @@ all.  This may very well take some time.")
     (while (looking-at "From ")
       (replace-match "X-From-Line: ")
       (forward-line 1))
-    ;; We save the article in all the newsgroups it belongs in.
+    ;; We save the article in all the groups it belongs in.
     (let ((ga group-art)
 	  first)
       (while ga
 	(nnml-possibly-create-directory (caar ga))
-	(let ((file (concat (nnmail-group-pathname 
+	(let ((file (concat (nnmail-group-pathname
 			     (caar ga) nnml-directory)
 			    (int-to-string (cdar ga)))))
 	  (if first
 	      ;; It was already saved, so we just make a hard link.
 	      (funcall nnmail-crosspost-link-function first file t)
 	    ;; Save the article.
-	    (nnmail-write-region (point-min) (point-max) file nil 
+	    (nnmail-write-region (point-min) (point-max) file nil
 				 (if (nnheader-be-verbose 5) nil 'nomesg))
 	    (setq first file)))
 	(setq ga (cdr ga))))
     ;; Generate a nov line for this article.  We generate the nov
     ;; line after saving, because nov generation destroys the
-    ;; header. 
+    ;; header.
     (setq headers (nnml-parse-head chars))
     ;; Output the nov line to all nov databases that should have it.
     (let ((ga group-art))
@@ -606,7 +614,7 @@ all.  This may very well take some time.")
   "Compute the next article number in GROUP."
   (let ((active (cadr (assoc group nnml-group-alist))))
     ;; The group wasn't known to nnml, so we just create an active
-    ;; entry for it.   
+    ;; entry for it.
     (unless active
       ;; Perhaps the active file was corrupt?  See whether
       ;; there are any articles in this group.
@@ -616,7 +624,7 @@ all.  This may very well take some time.")
 	(setq nnml-article-file-alist
 	      (sort
 	       (nnheader-article-to-file-alist nnml-current-directory)
-	       (lambda (a1 a2) (< (car a1) (car a2))))))
+	       'car-less-than-car)))
       (setq active
 	    (if nnml-article-file-alist
 		(cons (caar nnml-article-file-alist)
@@ -632,7 +640,7 @@ all.  This may very well take some time.")
 
 (defun nnml-add-nov (group article headers)
   "Add a nov line for the GROUP base."
-  (save-excursion 
+  (save-excursion
     (set-buffer (nnml-open-nov group))
     (goto-char (point-max))
     (mail-header-set-number headers article)
@@ -645,10 +653,10 @@ all.  This may very well take some time.")
   "Parse the head of the current buffer."
   (save-excursion
     (save-restriction
-      (goto-char (point-min))
-      (narrow-to-region 
-       (point)
-       (1- (or (search-forward "\n\n" nil t) (point-max))))
+      (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)
@@ -662,12 +670,15 @@ all.  This may very well take some time.")
 
 (defun nnml-open-nov (group)
   (or (cdr (assoc group nnml-nov-buffer-alist))
-      (let ((buffer (nnheader-find-file-noselect 
-		     (concat (nnmail-group-pathname group nnml-directory)
-			     nnml-nov-file-name))))
+      (let ((buffer (get-buffer-create (format " *nnml overview %s*" group))))
 	(save-excursion
 	  (set-buffer buffer)
-	  (buffer-disable-undo (current-buffer)))
+	  (set (make-local-variable 'nnml-nov-buffer-file-name)
+	       (concat (nnmail-group-pathname group nnml-directory)
+		       nnml-nov-file-name))
+	  (erase-buffer)
+	  (when (file-exists-p nnml-nov-buffer-file-name)
+	    (nnheader-insert-file-contents nnml-nov-buffer-file-name)))
 	(push (cons group buffer) nnml-nov-buffer-alist)
 	buffer)))
 
@@ -677,26 +688,29 @@ all.  This may very well take some time.")
       (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) (buffer-file-name) nil 'nomesg))
+	  (nnmail-write-region 1 (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)))))
 
 ;;;###autoload
 (defun nnml-generate-nov-databases ()
-  "Generate nov databases in all nnml directories."
+  "Generate NOV databases in all nnml directories."
   (interactive)
-  ;; Read the active file to make sure we don't re-use articles 
+  ;; Read the active file to make sure we don't re-use articles
   ;; numbers in empty groups.
   (nnmail-activate 'nnml)
   (nnml-open-server (or (nnoo-current-server 'nnml) ""))
   (setq nnml-directory (expand-file-name nnml-directory))
   ;; Recurse down the directories.
-  (nnml-generate-nov-databases-1 nnml-directory)
+  (nnml-generate-nov-databases-1 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)
+(defun nnml-generate-nov-databases-1 (dir &optional seen no-active)
+  "Regenerate the NOV database in DIR."
+  (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)
@@ -705,32 +719,36 @@ all.  This may very well take some time.")
     (let ((dirs (directory-files dir t nil t))
 	  dir)
       (while (setq dir (pop dirs))
-	(when (and (not (member (file-name-nondirectory dir) '("." "..")))
+	(when (and (not (string-match "^\\." (file-name-nondirectory dir)))
 		   (file-directory-p dir))
 	  (nnml-generate-nov-databases-1 dir seen))))
     ;; Do this directory.
-    (let ((files (sort
-		  (mapcar
-		   (lambda (name) (string-to-int name))
-		   (directory-files dir nil "^[0-9]+$" t))
-		  '<)))
-      (when files
+    (let ((files (sort (nnheader-article-to-file-alist dir)
+		       'car-less-than-car)))
+      (if (not files)
+	  (let* ((group (nnheader-file-to-group
+			 (directory-file-name dir) nnml-directory))
+		 (info (cadr (assoc group nnml-group-alist))))
+	    (when info
+	      (setcar info (1+ (cdr info)))))
 	(funcall nnml-generate-active-function dir)
 	;; Generate the nov file.
-	(nnml-generate-nov-file dir files)))))
+	(nnml-generate-nov-file dir files)
+	(unless no-active
+	  (nnmail-save-active nnml-group-alist nnml-active-file))))))
 
 (defvar files)
 (defun nnml-generate-active-info (dir)
   ;; Update the active info for this group.
-  (let ((group (nnheader-file-to-group 
+  (let ((group (nnheader-file-to-group
 		(directory-file-name dir) nnml-directory)))
     (setq nnml-group-alist
 	  (delq (assoc group nnml-group-alist) nnml-group-alist))
     (push (list group
-		(cons (car files)
+		(cons (caar files)
 		      (let ((f files))
 			(while (cdr f) (setq f (cdr f)))
-			(car f))))
+			(caar f))))
 	  nnml-group-alist)))
 
 (defun nnml-generate-nov-file (dir files)
@@ -741,27 +759,25 @@ all.  This may very well take some time.")
     (save-excursion
       ;; Init the nov buffer.
       (set-buffer nov-buffer)
-      (buffer-disable-undo (current-buffer))
+      (buffer-disable-undo)
       (erase-buffer)
       (set-buffer nntp-server-buffer)
       ;; Delete the old NOV file.
       (when (file-exists-p nov)
 	(funcall nnmail-delete-file-function nov))
       (while files
-	(unless (file-directory-p 
-		 (setq file (concat dir (int-to-string (car files)))))
+	(unless (file-directory-p (setq file (concat dir (cdar files))))
 	  (erase-buffer)
 	  (nnheader-insert-file-contents file)
-	  (narrow-to-region 
+	  (narrow-to-region
 	   (goto-char (point-min))
 	   (progn
 	     (search-forward "\n\n" nil t)
 	     (setq chars (- (point-max) (point)))
 	     (max 1 (1- (point)))))
-	  (when (and (not (= 0 chars))	; none of them empty files...
-		     (not (= (point-min) (point-max))))
+	  (unless (zerop (buffer-size))
 	    (goto-char (point-min))
-	    (setq headers (nnml-parse-head chars (car files)))
+	    (setq headers (nnml-parse-head chars (caar files)))
 	    (save-excursion
 	      (set-buffer nov-buffer)
 	      (goto-char (point-max))
@@ -776,11 +792,25 @@ all.  This may very well take some time.")
 (defun nnml-nov-delete-article (group article)
   (save-excursion
     (set-buffer (nnml-open-nov group))
-    (goto-char (point-min))
-    (when (re-search-forward (concat "^" (int-to-string article) "\t") nil t)
-      (delete-region (match-beginning 0) (progn (forward-line 1) (point))))
+    (when (nnheader-find-nov-line article)
+      (delete-region (point) (progn (forward-line 1) (point)))
+      (when (bobp)
+	(let ((active (cadr (assoc group nnml-group-alist)))
+	      num)
+	  (when active
+	    (if (eobp)
+		(setf (car active) (1+ (cdr active)))
+	      (when (and (setq num (ignore-errors (read (current-buffer))))
+			 (numberp num))
+		(setf (car active) num)))))))
     t))
 
+(defun nnml-update-file-alist (&optional force)
+  (when (or (not nnml-article-file-alist)
+	    force)
+    (setq nnml-article-file-alist
+	  (nnheader-article-to-file-alist nnml-current-directory))))
+
 (provide 'nnml)
 
 ;;; nnml.el ends here