;;; register.el --- register commands for Emacs
-;; Copyright (C) 1985, 1993, 1994 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 1993, 1994, 2001, 2002, 2003, 2004,
+;; 2005, 2006, 2007 Free Software Foundation, Inc.
;; Maintainer: FSF
;; Keywords: internal
;; 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)
+;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; 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.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
;;; Commentary:
Called from program, takes four args: REGISTER, START, END and DELETE-FLAG.
START and END are buffer positions indicating what to copy."
(interactive "cCopy to register: \nr\nP")
- (set-register register (buffer-substring start end))
+ (set-register register (filter-buffer-substring start end))
(if delete-flag (delete-region start end)))
(defun append-to-register (register start end &optional delete-flag)
Called from program, takes four args: REGISTER, START, END and DELETE-FLAG.
START and END are buffer positions indicating what to append."
(interactive "cAppend to register: \nr\nP")
- (or (stringp (get-register register))
- (error "Register does not contain text"))
- (set-register register (concat (get-register register)
- (buffer-substring start end)))
+ (let ((reg (get-register register))
+ (text (filter-buffer-substring start end)))
+ (set-register
+ register (cond ((not reg) text)
+ ((stringp reg) (concat reg text))
+ (t (error "Register does not contain text")))))
(if delete-flag (delete-region start end)))
(defun prepend-to-register (register start end &optional delete-flag)
Called from program, takes four args: REGISTER, START, END and DELETE-FLAG.
START and END are buffer positions indicating what to prepend."
(interactive "cPrepend to register: \nr\nP")
- (or (stringp (get-register register))
- (error "Register does not contain text"))
- (set-register register (concat (buffer-substring start end)
- (get-register register)))
+ (let ((reg (get-register register))
+ (text (filter-buffer-substring start end)))
+ (set-register
+ register (cond ((not reg) text)
+ ((stringp reg) (concat text reg))
+ (t (error "Register does not contain text")))))
(if delete-flag (delete-region start end)))
(defun copy-rectangle-to-register (register start end &optional delete-flag)