From 9f7c6da9c5bfd16c1b52a25c39731edb13fecf6c Mon Sep 17 00:00:00 2001
From: Gerd Moellmann <gerd@gnu.org>
Date: Fri, 24 Mar 2000 12:12:58 +0000
Subject: [PATCH] (rmail-confirm-expunge): New user-option. (rmail-expunge):
 Ask for confirmation depending on the setting of rmail-confirm-expunge.

---
 lisp/mail/rmail.el | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/lisp/mail/rmail.el b/lisp/mail/rmail.el
index 1586f37b000..1aab4a4b4b2 100644
--- a/lisp/mail/rmail.el
+++ b/lisp/mail/rmail.el
@@ -218,6 +218,15 @@ and the value of the environment variable MAIL overrides it)."
   :type 'regexp
   :group 'rmail-files)
 
+;;;###autoload
+(defcustom rmail-confirm-expunge 'yes-or-no-p
+  "*Whether and how to ask for confirmation before expunging deleted messages."
+  :type '(choice (const :tag "No confirmation" nil)
+		 (const :tag "Confirm with y-or-n-p" y-or-n-p)
+		 (const :tag "Confirm with yes-or-no-p" yes-or-no-p))
+  :version "21.1"
+  :group 'rmail-files)
+
 ;;;###autoload
 (defvar rmail-mode-hook nil
   "List of functions to call when Rmail is invoked.")
@@ -2674,10 +2683,13 @@ Deleted messages stay in the file until the \\[rmail-expunge] command is given."
 (defun rmail-expunge ()
   "Erase deleted messages from Rmail file and summary buffer."
   (interactive)
-  (rmail-only-expunge)
-  (if (rmail-summary-exists)
-      (rmail-select-summary
-	(rmail-update-summary))))
+  (when (or (null rmail-confirm-expunge)
+	    (funcall rmail-confirm-expunge
+		     "Erase deleted messages from Rmail file? "))
+    (rmail-only-expunge)
+    (if (rmail-summary-exists)
+	(rmail-select-summary
+	 (rmail-update-summary)))))
 
 ;;;; *** Rmail Mailing Commands ***
 
-- 
2.39.5