(cvs-fileinfo-from-entries): Deal with Solaris'

[gnu-emacs] / lisp / delsel.el

diff --git a/lisp/delsel.el b/lisp/delsel.el
index be13301a1f0ebfe924a8fad81446774d79c5695f..9488e94061e326084c9c6ca59d2b0534fd1beb1f 100644 (file)
--- a/lisp/delsel.el
+++ b/lisp/delsel.el
@@ -1,6 +1,6 @@
 ;;; delsel.el --- delete selection if you insert
 
-;; Copyright (C) 1992, 1997, 1998 Free Software Foundation, Inc.
+;; Copyright (C) 1992, 1997, 1998, 2001 Free Software Foundation, Inc.
 
 ;; Author: Matthieu Devin <devin@lucid.com>
 ;; Maintainer: FSF
@@ -56,7 +56,7 @@
 (defalias 'pending-delete-mode 'delete-selection-mode)
 
 ;;;###autoload
-(defun delete-selection-mode (&optional arg)
+(define-minor-mode delete-selection-mode
   "Toggle Delete Selection mode.
 With prefix ARG, turn Delete Selection mode on if and only if ARG is
 positive.
@@ -65,28 +65,12 @@ When Delete Selection mode is enabled, Transient Mark mode is also
 enabled and typed text replaces the selection if the selection is
 active.  Otherwise, typed text is just inserted at point regardless of
 any selection."
-  (interactive "P")
-  (setq delete-selection-mode (if arg
-                                 (> (prefix-numeric-value arg) 0)
-                               (not delete-selection-mode)))
+  :global t :group 'editing-basics
   (if (not delete-selection-mode)
       (remove-hook 'pre-command-hook 'delete-selection-pre-hook)
     (add-hook 'pre-command-hook 'delete-selection-pre-hook)
     (transient-mark-mode t)))
 
-;;;###autoload
-(defcustom delete-selection-mode nil
-  "Toggle Delete Selection mode.
-See command `delete-selection-mode'.
-Setting this variable directly does not take effect;
-use either \\[customize] or the function `delete-selection-mode'."
-  :set (lambda (symbol value)
-        (delete-selection-mode (or value 0)))
-  :initialize 'custom-initialize-default
-  :type 'boolean
-  :group 'editing-basics
-  :require 'delsel)
-
 (defun delete-active-region (&optional killp)
   (if killp
       (kill-region (point) (mark))
@@ -100,22 +84,31 @@ use either \\[customize] or the function `delete-selection-mode'."
             (not buffer-read-only))
     (let ((type (and (symbolp this-command)
                     (get this-command 'delete-selection))))
-      (cond ((eq type 'kill)
-            (delete-active-region t))
-           ((eq type 'yank)
-            ;; Before a yank command,
-            ;; make sure we don't yank the same region
-            ;; that we are going to delete.
-            ;; That would make yank a no-op.
-            (when (string= (buffer-substring-no-properties (point) (mark))
-                           (car kill-ring))
-              (current-kill 1))
-            (delete-active-region))
-           ((eq type 'supersede)
-            (delete-active-region)
-            (setq this-command 'ignore))
-           (type
-            (delete-active-region))))))
+      (condition-case data
+         (cond ((eq type 'kill)
+                (delete-active-region t))
+               ((eq type 'yank)
+                ;; Before a yank command,
+                ;; make sure we don't yank the same region
+                ;; that we are going to delete.
+                ;; That would make yank a no-op.
+                (when (string= (buffer-substring-no-properties (point) (mark))
+                               (car kill-ring))
+                  (current-kill 1))
+                (delete-active-region))
+               ((eq type 'supersede)
+                (let ((empty-region (= (point) (mark))))
+                  (delete-active-region)
+                  (unless empty-region
+                    (setq this-command 'ignore))))
+               (type
+                (delete-active-region)))
+       (file-supersession
+        ;; If ask-user-about-supersession-threat signals an error,
+        ;; stop safe_run_hooks from clearing out pre-command-hook.
+        (and (eq inhibit-quit 'pre-command-hook)
+             (setq inhibit-quit 'delete-selection-dummy))
+        (signal 'file-supersession (cdr data)))))))
 
 (put 'self-insert-command 'delete-selection t)
 (put 'self-insert-iso 'delete-selection t)
@@ -160,10 +153,4 @@ then it takes a second \\[keyboard-quit] to abort the minibuffer."
 
 (provide 'delsel)
 
-;; This is the standard way to put the mode into effect
-;; if delete-selection-mode has already been set to t
-;; when this file is loaded.
-(when delete-selection-mode
-  (delete-selection-mode t))
-
 ;;; delsel.el ends here