;;; vt100.el --- define VT100 function key sequences in function-key-map
-;; Copyright (C) 1989, 1993, 2001, 2002, 2003, 2004,
-;; 2005, 2006, 2007 Free Software Foundation, Inc.
+;; Copyright (C) 1989, 1993, 2001-2012 Free Software Foundation, Inc.
;; Author: FSF
;; Keywords: terminals
;; This file is part of GNU Emacs.
-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; 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 3, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, 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
;; 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., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
(tty-run-terminal-initialization (selected-frame) "lk201"))
;;; Controlling the screen width.
-(defvar vt100-wide-mode (= (frame-width) 132)
- "t if vt100 is in 132-column mode.")
-
-(defun vt100-wide-mode (&optional arg)
+(define-minor-mode vt100-wide-mode
"Toggle 132/80 column mode for vt100s.
-With positive argument, switch to 132-column mode.
-With negative argument, switch to 80-column mode."
- (interactive "P")
- (setq vt100-wide-mode
- (if (null arg) (not vt100-wide-mode)
- (> (prefix-numeric-value arg) 0)))
- (send-string-to-terminal (if vt100-wide-mode "\e[?3h" "\e[?3l"))
- (set-frame-width terminal-frame (if vt100-wide-mode 132 80)))
-
-;;; arch-tag: 9ff41f24-a7c9-4dee-9cf2-fbaa951eb840
+With a prefix argument ARG, switch to 132-column mode if ARG is
+positive, and 80-column mode otherwise. If called from Lisp,
+switch to 132-column mode if ARG is omitted or nil."
+ :global t :init-value (= (frame-width) 132)
+ (send-string-to-terminal (if vt100-wide-mode "\e[?3h" "\e[?3l"))
+ (set-frame-width terminal-frame (if vt100-wide-mode 132 80)))
+
;;; vt100.el ends here