(message-mail-follow-up-address-checker): New variable.

(message-reply): Use `message-mail-follow-up-address-checker'.
(message-mailing-list-address-list): New variable.
(message-check-mailing-list-with-address-list): New function.
(message-mailing-list-address-p): New variable.
(message-check-mailing-list-with-function): New function.

diff --git a/lisp/message.el b/lisp/message.el
index 588c69d..3de6b7f 100644 (file)
--- a/lisp/message.el
+++ b/lisp/message.el
@@ -663,6 +663,11 @@ articles."
   :group 'message-news
   :type 'message-header-lines)
 
+(defcustom message-mail-follow-up-address-checker nil
+  "A function of check follow up mail address."
+  :group 'message-mail
+  :type 'function)
+
 ;; Note: could use /usr/ucb/mail instead of sendmail;
 ;; options -t, and -v if not interactive.
 (defcustom message-mailer-swallows-blank-line
@@ -3786,7 +3791,10 @@ OTHER-HEADERS is an alist of header/value pairs."
                     (message-tokenize-header (buffer-string))))
              (let ((s ccalist))
                (while s
-                 (setq ccalist (delq (assoc (car (pop s)) s) ccalist)))))
+                 (setq ccalist (delq (assoc (car (pop s)) s) ccalist))))
+             (when (functionp message-mail-follow-up-address-checker)
+               (setq ccalist (funcall message-mail-follow-up-address-checker
+                                      ccalist))))
            (setq follow-to (list (cons 'To (cdr (pop ccalist)))))
            (when ccalist
              (let ((ccs (cons 'Cc (mapconcat
@@ -4465,6 +4473,66 @@ regexp varstr."
                (cdr local)))))
      locals)))
 
+;; @ For `message-mail-follow-up-address-checker'.
+
+(defcustom message-mailing-list-address-list nil
+  "*Regexp matching addresses that are mailing lists.
+It must be a simple regexp string or a list of regexp strings.
+This variable is used by \`message-check-mailing-list-with-address-list\'."
+  :group 'message-mail
+  :type '(repeat regexp))
+
+(defun message-check-mailing-list-with-address-list (alist)
+  (let ((s alist)
+       (regexp (if (stringp message-mailing-list-address-list)
+                   message-mailing-list-address-list
+                 (mapconcat
+                  (lambda (x)
+                    x)
+                  message-mailing-list-address-list
+                  "\\|")))
+       address non-mailing-list mailing-list)
+    (while (setq address (car (pop s)))
+      (if (string-match regexp address)
+         (setq mailing-list t)
+       (setq non-mailing-list
+             (append non-mailing-list (list address)))))
+    (if (or (not non-mailing-list)
+           (not mailing-list)
+           (not (y-or-n-p "Do you want to remove private address? ")))
+       alist
+      (setq s non-mailing-list)
+      (while s
+       (setq alist (delq (assoc (pop s) alist) alist)))
+      alist)
+    ))
+
+(defcustom message-mailing-list-address-p nil
+  "*The function return t if address is a mailing list.
+It must be function, and interface is (ADDRESS).
+ADDRESS is a string of mail address.
+This variable is used by \`message-check-mailing-list-with-function\'."
+  :group 'message-mail
+  :type 'function)
+
+(defun message-check-mailing-list-with-function (alist)
+  (let ((s alist)
+       address non-mailing-list mailing-list)
+    (while (setq address (car (pop s)))
+      (if (funcall message-mailing-list-address-p address)
+         (setq mailing-list t)
+       (setq non-mailing-list
+             (append non-mailing-list (list address)))))
+    (if (or (not non-mailing-list)
+           (not mailing-list)
+           (not (y-or-n-p "Do you want to remove private address? ")))
+       alist
+      (setq s non-mailing-list)
+      (while s
+       (setq alist (delq (assoc (pop s) alist) alist)))
+      alist)
+    ))
+
 ;;; @ for MIME Edit mode
 ;;;