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

[Andreas Schwab]

Index: emacs/lisp/gnus/gnus-kill.el
diff -c /dev/null emacs/lisp/gnus/gnus-kill.el:1.6.2.1
*** /dev/null   Thu Jul 22 16:46:19 2004
--- emacs/lisp/gnus/gnus-kill.el        Thu Jul 22 16:45:47 2004
***************
*** 0 ****
--- 1,721 ----
+ ;;; gnus-kill.el --- kill commands for Gnus
+ ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003
+ ;;        Free Software Foundation, Inc.
+ 
+ ;; Author: Masanobu UMEDA <address@hidden>
+ ;;    Lars Magne Ingebrigtsen <address@hidden>
+ ;; Keywords: news
+ 
+ ;; This file is part of GNU Emacs.
+ 
+ ;; GNU Emacs is free software; you can redistribute it and/or modify
+ ;; it under the terms of the GNU General Public License as published by
+ ;; the Free Software Foundation; either version 2, or (at your option)
+ ;; any later version.
+ 
+ ;; GNU Emacs is distributed in the hope that it will be useful,
+ ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+ ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ ;; GNU General Public License for more details.
+ 
+ ;; You should have received a copy of the GNU General Public License
+ ;; along with GNU Emacs; see the file COPYING.  If not, write to the
+ ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ ;; Boston, MA 02111-1307, USA.
+ 
+ ;;; Commentary:
+ 
+ ;;; Code:
+ 
+ (eval-when-compile (require 'cl))
+ 
+ (require 'gnus)
+ (require 'gnus-art)
+ (require 'gnus-range)
+ 
+ (defcustom gnus-kill-file-mode-hook nil
+   "Hook for Gnus kill file mode."
+   :group 'gnus-score-kill
+   :type 'hook)
+ 
+ (defcustom gnus-kill-expiry-days 7
+   "*Number of days before expiring unused kill file entries."
+   :group 'gnus-score-kill
+   :group 'gnus-score-expire
+   :type 'integer)
+ 
+ (defcustom gnus-kill-save-kill-file nil
+   "*If non-nil, will save kill files after processing them."
+   :group 'gnus-score-kill
+   :type 'boolean)
+ 
+ (defcustom gnus-winconf-kill-file nil
+   "What does this do, Lars?
+ I don't know, Per."
+   :group 'gnus-score-kill
+   :type 'sexp)
+ 
+ (defcustom gnus-kill-killed t
+   "*If non-nil, Gnus will apply kill files to already killed articles.
+ If it is nil, Gnus will never apply kill files to articles that have
+ already been through the scoring process, which might very well save lots
+ of time."
+   :group 'gnus-score-kill
+   :type 'boolean)
+ 
+ 
+ 
+ (defmacro gnus-raise (field expression level)
+   `(gnus-kill ,field ,expression
+             (function (gnus-summary-raise-score ,level)) t))
+ 
+ (defmacro gnus-lower (field expression level)
+   `(gnus-kill ,field ,expression
+             (function (gnus-summary-raise-score (- ,level))) t))
+ 
+ ;;;
+ ;;; Gnus Kill File Mode
+ ;;;
+ 
+ (defvar gnus-kill-file-mode-map nil)
+ 
+ (unless gnus-kill-file-mode-map
+   (gnus-define-keymap (setq gnus-kill-file-mode-map
+                           (copy-keymap emacs-lisp-mode-map))
+     "\C-c\C-k\C-s" gnus-kill-file-kill-by-subject
+     "\C-c\C-k\C-a" gnus-kill-file-kill-by-author
+     "\C-c\C-k\C-t" gnus-kill-file-kill-by-thread
+     "\C-c\C-k\C-x" gnus-kill-file-kill-by-xref
+     "\C-c\C-a" gnus-kill-file-apply-buffer
+     "\C-c\C-e" gnus-kill-file-apply-last-sexp
+     "\C-c\C-c" gnus-kill-file-exit))
+ 
+ (defun gnus-kill-file-mode ()
+   "Major mode for editing kill files.
+ 
+ If you are using this mode - you probably shouldn't.  Kill files
+ perform badly and paint with a pretty broad brush.  Score files, on
+ the other hand, are vastly faster (40x speedup) and give you more
+ control over what to do.
+ 
+ In addition to Emacs-Lisp Mode, the following commands are available:
+ 
+ \\{gnus-kill-file-mode-map}
+ 
+   A kill file contains Lisp expressions to be applied to a selected
+ newsgroup.  The purpose is to mark articles as read on the basis of
+ some set of regexps.  A global kill file is applied to every newsgroup,
+ and a local kill file is applied to a specified newsgroup.  Since a
+ global kill file is applied to every newsgroup, for better performance
+ use a local one.
+ 
+   A kill file can contain any kind of Emacs Lisp expressions expected
+ to be evaluated in the Summary buffer.  Writing Lisp programs for this
+ purpose is not so easy because the internal working of Gnus must be
+ well-known.  For this reason, Gnus provides a general function which
+ does this easily for non-Lisp programmers.
+ 
+   The `gnus-kill' function executes commands available in Summary Mode
+ by their key sequences.  `gnus-kill' should be called with FIELD,
+ REGEXP and optional COMMAND and ALL.  FIELD is a string representing
+ the header field or an empty string.  If FIELD is an empty string, the
+ entire article body is searched for.  REGEXP is a string which is
+ compared with FIELD value.  COMMAND is a string representing a valid
+ key sequence in Summary mode or Lisp expression.  COMMAND defaults to
+ '(gnus-summary-mark-as-read nil \"X\").  Make sure that COMMAND is
+ executed in the Summary buffer.  If the second optional argument ALL
+ is non-nil, the COMMAND is applied to articles which are already
+ marked as read or unread.  Articles which are marked are skipped over
+ by default.
+ 
+   For example, if you want to mark articles of which subjects contain
+ the string `AI' as read, a possible kill file may look like:
+ 
+       (gnus-kill \"Subject\" \"AI\")
+ 
+   If you want to mark articles with `D' instead of `X', you can use
+ the following expression:
+ 
+       (gnus-kill \"Subject\" \"AI\" \"d\")
+ 
+ In this example it is assumed that the command
+ `gnus-summary-mark-as-read-forward' is assigned to `d' in Summary Mode.
+ 
+   It is possible to delete unnecessary headers which are marked with
+ `X' in a kill file as follows:
+ 
+       (gnus-expunge \"X\")
+ 
+   If the Summary buffer is empty after applying kill files, Gnus will
+ exit the selected newsgroup normally.  If headers which are marked
+ with `D' are deleted in a kill file, it is impossible to read articles
+ which are marked as read in the previous Gnus sessions.  Marks other
+ than `D' should be used for articles which should really be deleted.
+ 
+ Entry to this mode calls emacs-lisp-mode-hook and
+ gnus-kill-file-mode-hook with no arguments, if that value is non-nil."
+   (interactive)
+   (kill-all-local-variables)
+   (use-local-map gnus-kill-file-mode-map)
+   (set-syntax-table emacs-lisp-mode-syntax-table)
+   (setq major-mode 'gnus-kill-file-mode)
+   (setq mode-name "Kill")
+   (lisp-mode-variables nil)
+   (gnus-run-hooks 'emacs-lisp-mode-hook 'gnus-kill-file-mode-hook))
+ 
+ (defun gnus-kill-file-edit-file (newsgroup)
+   "Begin editing a kill file for NEWSGROUP.
+ If NEWSGROUP is nil, the global kill file is selected."
+   (interactive "sNewsgroup: ")
+   (let ((file (gnus-newsgroup-kill-file newsgroup)))
+     (gnus-make-directory (file-name-directory file))
+     ;; Save current window configuration if this is first invocation.
+     (or (and (get-file-buffer file)
+            (get-buffer-window (get-file-buffer file)))
+       (setq gnus-winconf-kill-file (current-window-configuration)))
+     ;; Hack windows.
+     (let ((buffer (find-file-noselect file)))
+       (cond ((get-buffer-window buffer)
+            (pop-to-buffer buffer))
+           ((eq major-mode 'gnus-group-mode)
+            (gnus-configure-windows 'group) ;Take all windows.
+            (pop-to-buffer buffer))
+           ((eq major-mode 'gnus-summary-mode)
+            (gnus-configure-windows 'article)
+            (pop-to-buffer gnus-article-buffer)
+            (bury-buffer gnus-article-buffer)
+            (switch-to-buffer buffer))
+           (t                          ;No good rules.
+            (find-file-other-window file))))
+     (gnus-kill-file-mode)))
+ 
+ ;; Fix by Sudish Joseph <address@hidden>.
+ (defun gnus-kill-set-kill-buffer ()
+   (let* ((file (gnus-newsgroup-kill-file gnus-newsgroup-name))
+        (buffer (find-file-noselect file)))
+     (set-buffer buffer)
+     (gnus-kill-file-mode)
+     (bury-buffer buffer)))
+ 
+ (defun gnus-kill-file-enter-kill (field regexp &optional dont-move)
+   ;; Enter kill file entry.
+   ;; FIELD: String containing the name of the header field to kill.
+   ;; REGEXP: The string to kill.
+   (save-excursion
+     (let (string)
+       (unless (eq major-mode 'gnus-kill-file-mode)
+       (gnus-kill-set-kill-buffer))
+       (unless dont-move
+       (goto-char (point-max)))
+       (insert (setq string (format "(gnus-kill %S %S)\n" field regexp)))
+       (gnus-kill-file-apply-string string))))
+ 
+ (defun gnus-kill-file-kill-by-subject ()
+   "Kill by subject."
+   (interactive)
+   (gnus-kill-file-enter-kill
+    "Subject"
+    (if (vectorp gnus-current-headers)
+        (regexp-quote
+       (gnus-simplify-subject (mail-header-subject gnus-current-headers)))
+      "")
+    t))
+ 
+ (defun gnus-kill-file-kill-by-author ()
+   "Kill by author."
+   (interactive)
+   (gnus-kill-file-enter-kill
+    "From"
+    (if (vectorp gnus-current-headers)
+        (regexp-quote (mail-header-from gnus-current-headers))
+      "") t))
+ 
+ (defun gnus-kill-file-kill-by-thread ()
+   "Kill by author."
+   (interactive)
+   (gnus-kill-file-enter-kill
+    "References"
+    (if (vectorp gnus-current-headers)
+        (regexp-quote (mail-header-id gnus-current-headers))
+      "")))
+ 
+ (defun gnus-kill-file-kill-by-xref ()
+   "Kill by Xref."
+   (interactive)
+   (let ((xref (and (vectorp gnus-current-headers)
+                  (mail-header-xref gnus-current-headers)))
+       (start 0)
+       group)
+     (if xref
+       (while (string-match " \\([^ \t]+\\):" xref start)
+         (setq start (match-end 0))
+         (when (not (string=
+                     (setq group
+                           (substring xref (match-beginning 1) (match-end 1)))
+                     gnus-newsgroup-name))
+           (gnus-kill-file-enter-kill
+            "Xref" (concat " " (regexp-quote group) ":") t)))
+       (gnus-kill-file-enter-kill "Xref" "" t))))
+ 
+ (defun gnus-kill-file-raise-followups-to-author (level)
+   "Raise score for all followups to the current author."
+   (interactive "p")
+   (let ((name (mail-header-from gnus-current-headers))
+       string)
+     (save-excursion
+       (gnus-kill-set-kill-buffer)
+       (goto-char (point-min))
+       (setq name (read-string (concat "Add " level
+                                     " to followup articles to: ")
+                             (regexp-quote name)))
+       (setq
+        string
+        (format
+       "(gnus-kill %S %S '(gnus-summary-temporarily-raise-by-thread %S))\n"
+       "From" name level))
+       (insert string)
+       (gnus-kill-file-apply-string string))
+     (gnus-message
+      6 "Added temporary score file entry for followups to %s." name)))
+ 
+ (defun gnus-kill-file-apply-buffer ()
+   "Apply current buffer to current newsgroup."
+   (interactive)
+   (if (and gnus-current-kill-article
+          (get-buffer gnus-summary-buffer))
+       ;; Assume newsgroup is selected.
+       (gnus-kill-file-apply-string (buffer-string))
+     (ding) (gnus-message 2 "No newsgroup is selected.")))
+ 
+ (defun gnus-kill-file-apply-string (string)
+   "Apply STRING to current newsgroup."
+   (interactive)
+   (let ((string (concat "(progn \n" string "\n)")))
+     (save-excursion
+       (save-window-excursion
+       (pop-to-buffer gnus-summary-buffer)
+       (eval (car (read-from-string string)))))))
+ 
+ (defun gnus-kill-file-apply-last-sexp ()
+   "Apply sexp before point in current buffer to current newsgroup."
+   (interactive)
+   (if (and gnus-current-kill-article
+          (get-buffer gnus-summary-buffer))
+       ;; Assume newsgroup is selected.
+       (let ((string
+            (buffer-substring
+             (save-excursion (forward-sexp -1) (point)) (point))))
+       (save-excursion
+         (save-window-excursion
+           (pop-to-buffer gnus-summary-buffer)
+           (eval (car (read-from-string string))))))
+     (ding) (gnus-message 2 "No newsgroup is selected.")))
+ 
+ (defun gnus-kill-file-exit ()
+   "Save a kill file, then return to the previous buffer."
+   (interactive)
+   (save-buffer)
+   (let ((killbuf (current-buffer)))
+     ;; We don't want to return to article buffer.
+     (when (get-buffer gnus-article-buffer)
+       (bury-buffer gnus-article-buffer))
+     ;; Delete the KILL file windows.
+     (delete-windows-on killbuf)
+     ;; Restore last window configuration if available.
+     (when gnus-winconf-kill-file
+       (set-window-configuration gnus-winconf-kill-file))
+     (setq gnus-winconf-kill-file nil)
+     ;; Kill the KILL file buffer.  Suggested by address@hidden
+     (kill-buffer killbuf)))
+ 
+ ;; For kill files
+ 
+ (defun gnus-Newsgroup-kill-file (newsgroup)
+   "Return the name of a kill file for NEWSGROUP.
+ If NEWSGROUP is nil, return the global kill file instead."
+   (cond ((or (null newsgroup)
+            (string-equal newsgroup ""))
+        ;; The global kill file is placed at top of the directory.
+        (expand-file-name gnus-kill-file-name gnus-kill-files-directory))
+       (gnus-use-long-file-name
+        ;; Append ".KILL" to capitalized newsgroup name.
+        (expand-file-name (concat (gnus-capitalize-newsgroup newsgroup)
+                                  "." gnus-kill-file-name)
+                          gnus-kill-files-directory))
+       (t
+        ;; Place "KILL" under the hierarchical directory.
+        (expand-file-name (concat (gnus-newsgroup-directory-form newsgroup)
+                                  "/" gnus-kill-file-name)
+                          gnus-kill-files-directory))))
+ 
+ (defun gnus-expunge (marks)
+   "Remove lines marked with MARKS."
+   (save-excursion
+     (set-buffer gnus-summary-buffer)
+     (gnus-summary-limit-to-marks marks 'reverse)))
+ 
+ (defun gnus-apply-kill-file-unless-scored ()
+   "Apply .KILL file, unless a .SCORE file for the same newsgroup exists."
+   (cond ((file-exists-p (gnus-score-file-name gnus-newsgroup-name))
+        ;; Ignores global KILL.
+        (when (file-exists-p (gnus-newsgroup-kill-file gnus-newsgroup-name))
+          (gnus-message 3 "Note: Ignoring %s.KILL; preferring .SCORE"
+                        gnus-newsgroup-name))
+        0)
+       ((or (file-exists-p (gnus-newsgroup-kill-file nil))
+            (file-exists-p (gnus-newsgroup-kill-file gnus-newsgroup-name)))
+        (gnus-apply-kill-file-internal))
+       (t
+        0)))
+ 
+ (defun gnus-apply-kill-file-internal ()
+   "Apply a kill file to the current newsgroup.
+ Returns the number of articles marked as read."
+   (let* ((kill-files (list (gnus-newsgroup-kill-file nil)
+                          (gnus-newsgroup-kill-file gnus-newsgroup-name)))
+        (unreads (length gnus-newsgroup-unreads))
+        (gnus-summary-inhibit-highlight t)
+        beg)
+     (setq gnus-newsgroup-kill-headers nil)
+     ;; If there are any previously scored articles, we remove these
+     ;; from the `gnus-newsgroup-headers' list that the score functions
+     ;; will see.  This is probably pretty wasteful when it comes to
+     ;; conses, but is, I think, faster than having to assq in every
+     ;; single score function.
+     (let ((files kill-files))
+       (while files
+       (if (file-exists-p (car files))
+           (let ((headers gnus-newsgroup-headers))
+             (if gnus-kill-killed
+                 (setq gnus-newsgroup-kill-headers
+                       (mapcar (lambda (header) (mail-header-number header))
+                               headers))
+               (while headers
+                 (unless (gnus-member-of-range
+                          (mail-header-number (car headers))
+                          gnus-newsgroup-killed)
+                   (push (mail-header-number (car headers))
+                         gnus-newsgroup-kill-headers))
+                 (setq headers (cdr headers))))
+             (setq files nil))
+         (setq files (cdr files)))))
+     (if (not gnus-newsgroup-kill-headers)
+       ()
+       (save-window-excursion
+       (save-excursion
+         (while kill-files
+           (if (not (file-exists-p (car kill-files)))
+               ()
+             (gnus-message 6 "Processing kill file %s..." (car kill-files))
+             (find-file (car kill-files))
+             (goto-char (point-min))
+ 
+             (if (consp (ignore-errors (read (current-buffer))))
+                 (gnus-kill-parse-gnus-kill-file)
+               (gnus-kill-parse-rn-kill-file))
+ 
+             (gnus-message
+              6 "Processing kill file %s...done" (car kill-files)))
+           (setq kill-files (cdr kill-files)))))
+ 
+       (gnus-set-mode-line 'summary)
+ 
+       (if beg
+         (let ((nunreads (- unreads (length gnus-newsgroup-unreads))))
+           (or (eq nunreads 0)
+               (gnus-message 6 "Marked %d articles as read" nunreads))
+           nunreads)
+       0))))
+ 
+ ;; Parse a Gnus killfile.
+ (defun gnus-kill-parse-gnus-kill-file ()
+   (goto-char (point-min))
+   (gnus-kill-file-mode)
+   (let (beg form)
+     (while (progn
+            (setq beg (point))
+            (setq form (ignore-errors (read (current-buffer)))))
+       (unless (listp form)
+       (error "Invalid kill entry (possibly rn kill file?): %s" form))
+       (if (or (eq (car form) 'gnus-kill)
+             (eq (car form) 'gnus-raise)
+             (eq (car form) 'gnus-lower))
+         (progn
+           (delete-region beg (point))
+           (insert (or (eval form) "")))
+       (save-excursion
+         (set-buffer gnus-summary-buffer)
+         (ignore-errors (eval form)))))
+     (and (buffer-modified-p)
+        gnus-kill-save-kill-file
+        (save-buffer))
+     (set-buffer-modified-p nil)))
+ 
+ ;; Parse an rn killfile.
+ (defun gnus-kill-parse-rn-kill-file ()
+   (goto-char (point-min))
+   (gnus-kill-file-mode)
+   (let ((mod-to-header
+        '((?a . "")
+          (?h . "")
+          (?f . "from")
+          (?: . "subject")))
+       ;;(com-to-com
+       ;; '((?m . " ")
+       ;;   (?j . "X")))
+       pattern modifier commands)
+     (while (not (eobp))
+       (if (not (looking-at "[ 
\t]*/\\([^/]*\\)/\\([ahfcH]\\)?:\\([a-z=:]*\\)"))
+         ()
+       (setq pattern (buffer-substring (match-beginning 1) (match-end 1)))
+       (setq modifier (if (match-beginning 2) (char-after (match-beginning 2))
+                        ?s))
+       (setq commands (buffer-substring (match-beginning 3) (match-end 3)))
+ 
+       ;; The "f:+" command marks everything *but* the matches as read,
+       ;; so we simply first match everything as read, and then unmark
+       ;; PATTERN later.
+       (when (string-match "\\+" commands)
+         (gnus-kill "from" ".")
+         (setq commands "m"))
+ 
+       (gnus-kill
+        (or (cdr (assq modifier mod-to-header)) "subject")
+        pattern
+        (if (string-match "m" commands)
+            '(gnus-summary-mark-as-unread nil " ")
+          '(gnus-summary-mark-as-read nil "X"))
+        nil t))
+       (forward-line 1))))
+ 
+ ;; Kill changes and new format by suggested by JWZ and Sudish Joseph
+ ;; <address@hidden>.
+ (defun gnus-kill (field regexp &optional exe-command all silent)
+   "If FIELD of an article matches REGEXP, execute COMMAND.
+ Optional 1st argument COMMAND is default to
+       (gnus-summary-mark-as-read nil \"X\").
+ If optional 2nd argument ALL is non-nil, articles marked are also applied to.
+ If FIELD is an empty string (or nil), entire article body is searched for.
+ COMMAND must be a lisp expression or a string representing a key sequence."
+   ;; We don't want to change current point nor window configuration.
+   (let ((old-buffer (current-buffer)))
+     (save-excursion
+       (save-window-excursion
+       ;; Selected window must be summary buffer to execute keyboard
+       ;; macros correctly.  See command_loop_1.
+       (switch-to-buffer gnus-summary-buffer 'norecord)
+       (goto-char (point-min))         ;From the beginning.
+       (let ((kill-list regexp)
+             (date (current-time-string))
+             (command (or exe-command '(gnus-summary-mark-as-read
+                                        nil gnus-kill-file-mark)))
+             kill kdate prev)
+         (if (listp kill-list)
+             ;; It is a list.
+             (if (not (consp (cdr kill-list)))
+                 ;; It's of the form (regexp . date).
+                 (if (zerop (gnus-execute field (car kill-list)
+                                          command nil (not all)))
+                     (when (> (days-between date (cdr kill-list))
+                              gnus-kill-expiry-days)
+                       (setq regexp nil))
+                   (setcdr kill-list date))
+               (while (setq kill (car kill-list))
+                 (if (consp kill)
+                     ;; It's a temporary kill.
+                     (progn
+                       (setq kdate (cdr kill))
+                       (if (zerop (gnus-execute
+                                   field (car kill) command nil (not all)))
+                           (when (> (days-between date kdate)
+                                    gnus-kill-expiry-days)
+                             ;; Time limit has been exceeded, so we
+                             ;; remove the match.
+                             (if prev
+                                 (setcdr prev (cdr kill-list))
+                               (setq regexp (cdr regexp))))
+                         ;; Successful kill.  Set the date to today.
+                         (setcdr kill date)))
+                   ;; It's a permanent kill.
+                   (gnus-execute field kill command nil (not all)))
+                 (setq prev kill-list)
+                 (setq kill-list (cdr kill-list))))
+           (gnus-execute field kill-list command nil (not all))))))
+     (switch-to-buffer old-buffer)
+     (when (and (eq major-mode 'gnus-kill-file-mode) regexp (not silent))
+       (gnus-pp-gnus-kill
+        (nconc (list 'gnus-kill field
+                   (if (consp regexp) (list 'quote regexp) regexp))
+             (when (or exe-command all)
+               (list (list 'quote exe-command)))
+             (if all (list t) nil))))))
+ 
+ (defun gnus-pp-gnus-kill (object)
+   (if (or (not (consp (nth 2 object)))
+         (not (consp (cdr (nth 2 object))))
+         (and (eq 'quote (car (nth 2 object)))
+              (not (consp (cdadr (nth 2 object))))))
+       (concat "\n" (gnus-prin1-to-string object))
+     (save-excursion
+       (set-buffer (gnus-get-buffer-create "*Gnus PP*"))
+       (buffer-disable-undo)
+       (erase-buffer)
+       (insert (format "\n(%S %S\n  '(" (nth 0 object) (nth 1 object)))
+       (let ((klist (cadr (nth 2 object)))
+           (first t))
+       (while klist
+         (insert (if first (progn (setq first nil) "")  "\n    ")
+                 (gnus-prin1-to-string (car klist)))
+         (setq klist (cdr klist))))
+       (insert ")")
+       (and (nth 3 object)
+          (insert "\n  "
+                  (if (and (consp (nth 3 object))
+                           (not (eq 'quote (car (nth 3 object)))))
+                      "'" "")
+                  (gnus-prin1-to-string (nth 3 object))))
+       (when (nth 4 object)
+       (insert "\n  t"))
+       (insert ")")
+       (prog1
+         (buffer-string)
+       (kill-buffer (current-buffer))))))
+ 
+ (defun gnus-execute-1 (function regexp form header)
+   (save-excursion
+     (let (did-kill)
+       (if (null header)
+         nil                           ;Nothing to do.
+       (if function
+           ;; Compare with header field.
+           (let (value)
+             (and header
+                  (progn
+                    (setq value (funcall function header))
+                    ;; Number (Lines:) or symbol must be converted to string.
+                    (unless (stringp value)
+                      (setq value (gnus-prin1-to-string value)))
+                    (setq did-kill (string-match regexp value)))
+                  (cond ((stringp form) ;Keyboard macro.
+                         (execute-kbd-macro form))
+                        ((functionp form)
+                         (funcall form))
+                        (t
+                         (eval form)))))
+         ;; Search article body.
+         (let ((gnus-current-article nil) ;Save article pointer.
+               (gnus-last-article nil)
+               (gnus-break-pages nil)  ;No need to break pages.
+               (gnus-mark-article-hook nil)) ;Inhibit marking as read.
+           (gnus-message
+            6 "Searching for article: %d..." (mail-header-number header))
+           (gnus-article-setup-buffer)
+           (gnus-article-prepare (mail-header-number header) t)
+           (when (save-excursion
+                   (set-buffer gnus-article-buffer)
+                   (goto-char (point-min))
+                   (setq did-kill (re-search-forward regexp nil t)))
+             (cond ((stringp form)     ;Keyboard macro.
+                    (execute-kbd-macro form))
+                   ((functionp form)
+                    (funcall form))
+                   (t
+                    (eval form)))))))
+       did-kill)))
+ 
+ (defun gnus-execute (field regexp form &optional backward unread)
+   "If FIELD of article header matches REGEXP, execute lisp FORM (or a string).
+ If FIELD is an empty string (or nil), entire article body is searched for.
+ If optional 1st argument BACKWARD is non-nil, do backward instead.
+ If optional 2nd argument UNREAD is non-nil, articles which are
+ marked as read or ticked are ignored."
+   (save-excursion
+     (let ((killed-no 0)
+         function article header extras)
+       (cond
+        ;; Search body.
+        ((or (null field)
+           (string-equal field ""))
+       (setq function nil))
+        ;; Get access function of header field.
+        ((cond ((fboundp
+               (setq function
+                     (intern-soft
+                      (concat "mail-header-" (downcase field)))))
+              (setq function `(lambda (h) (,function h))))
+             ((when (setq extras
+                          (member (downcase field)
+                                  (mapcar (lambda (header)
+                                            (downcase (symbol-name header)))
+                                          gnus-extra-headers)))
+                (setq function
+                      `(lambda (h)
+                         (gnus-extra-header
+                          (quote ,(nth (- (length gnus-extra-headers)
+                                          (length extras))
+                                       gnus-extra-headers))
+                          h)))))))
+        ;; Signal error.
+        (t
+       (error "Unknown header field: \"%s\"" field)))
+       ;; Starting from the current article.
+       (while (or
+             ;; First article.
+             (and (not article)
+                  (setq article (gnus-summary-article-number)))
+             ;; Find later articles.
+             (setq article
+                   (gnus-summary-search-forward unread nil backward)))
+       (and (or (null gnus-newsgroup-kill-headers)
+                (memq article gnus-newsgroup-kill-headers))
+            (vectorp (setq header (gnus-summary-article-header article)))
+            (gnus-execute-1 function regexp form header)
+            (setq killed-no (1+ killed-no))))
+       ;; Return the number of killed articles.
+       killed-no)))
+ 
+ ;;;###autoload
+ (defalias 'gnus-batch-kill 'gnus-batch-score)
+ ;;;###autoload
+ (defun gnus-batch-score ()
+   "Run batched scoring.
+ Usage: emacs -batch -l ~/.emacs -l gnus -f gnus-batch-score"
+   (interactive)
+   (let* ((gnus-newsrc-options-n
+         (gnus-newsrc-parse-options
+          (concat "options -n "
+                  (mapconcat 'identity command-line-args-left " "))))
+        (gnus-expert-user t)
+        (nnmail-spool-file nil)
+        (mail-sources nil)
+        (gnus-use-dribble-file nil)
+        (gnus-batch-mode t)
+        info group newsrc entry
+        ;; Disable verbose message.
+        gnus-novice-user gnus-large-newsgroup
+        gnus-options-subscribe gnus-auto-subscribed-groups
+        gnus-options-not-subscribe)
+     ;; Eat all arguments.
+     (setq command-line-args-left nil)
+     (gnus-slave)
+     ;; Apply kills to specified newsgroups in command line arguments.
+     (setq newsrc (cdr gnus-newsrc-alist))
+     (while (setq info (pop newsrc))
+       (setq group (gnus-info-group info)
+           entry (gnus-gethash group gnus-newsrc-hashtb))
+       (when (and (<= (gnus-info-level info) gnus-level-subscribed)
+                (and (car entry)
+                     (or (eq (car entry) t)
+                         (not (zerop (car entry))))))
+       (ignore-errors
+         (gnus-summary-read-group group nil t nil t))
+       (when (eq (current-buffer) (get-buffer gnus-summary-buffer))
+         (gnus-summary-exit))))
+     ;; Exit Emacs.
+     (switch-to-buffer gnus-group-buffer)
+     (gnus-group-save-newsrc)))
+ 
+ (provide 'gnus-kill)
+ 
+ ;;; arch-tag: b30c0f53-df1a-490b-b81e-17b13474f395
+ ;;; gnus-kill.el ends here