1;;; vt100.el --- define VT100 function key sequences in function-key-map
2
3;; Copyright (C) 1989, 1993, 2001, 2002, 2003, 2004,
4;;   2005, 2006, 2007 Free Software Foundation, Inc.
5
6;; Author: FSF
7;; Keywords: terminals
8
9;; This file is part of GNU Emacs.
10
11;; GNU Emacs is free software; you can redistribute it and/or modify
12;; it under the terms of the GNU General Public License as published by
13;; the Free Software Foundation; either version 2, or (at your option)
14;; any later version.
15
16;; GNU Emacs is distributed in the hope that it will be useful,
17;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
19;; GNU General Public License for more details.
20
21;; You should have received a copy of the GNU General Public License
22;; along with GNU Emacs; see the file COPYING.  If not, write to the
23;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
24;; Boston, MA 02110-1301, USA.
25
26;;; Commentary:
27
28;; Uses the Emacs 19 terminal initialization features --- won't work with 18.
29
30;; Handles all VT100 clones, including the Apollo terminal.  Also handles
31;; the VT200 --- its PF- and arrow- keys are different, but all those
32;; are really set up by the terminal initialization code, which mines them
33;; out of termcap.  This package is here to define the keypad comma, dash
34;; and period (which aren't in termcap's repertoire) and the function for
35;; changing from 80 to 132 columns & vv.
36
37;;; Code:
38
39;; Set up function-key-map entries that termcap and terminfo don't know.
40
41
42(defun terminal-init-vt100 ()
43  "Terminal initialization function for vt100."
44  (load "term/lk201" nil t))
45
46;;; Controlling the screen width.
47(defvar vt100-wide-mode (= (frame-width) 132)
48  "t if vt100 is in 132-column mode.")
49
50(defun vt100-wide-mode (&optional arg)
51  "Toggle 132/80 column mode for vt100s.
52With positive argument, switch to 132-column mode.
53With negative argument, switch to 80-column mode."
54 (interactive "P")
55 (setq vt100-wide-mode
56	(if (null arg) (not vt100-wide-mode)
57	  (> (prefix-numeric-value arg) 0)))
58 (send-string-to-terminal (if vt100-wide-mode "\e[?3h" "\e[?3l"))
59 (set-frame-width terminal-frame (if vt100-wide-mode 132 80)))
60
61;;; arch-tag: 9ff41f24-a7c9-4dee-9cf2-fbaa951eb840
62;;; vt100.el ends here
63