1 ;;; vt100.el --- define VT100 function key sequences in function-key-map
6 ;; Copyright (C) 1989, 1993 Free Software Foundation, Inc.
7 ;;; This file is part of SXEmacs.
9 ;; SXEmacs is free software: you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation, either version 3 of the License, or
12 ;; (at your option) any later version.
14 ;; SXEmacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with this program. If not, see <http://www.gnu.org/licenses/>.
24 ;; Uses the Emacs 19 terminal initialization features --- won't work with 18.
26 ;; Handles all VT100 clones, including the Apollo terminal. Also handles
27 ;; the VT200 --- its PF- and arrow- keys are different, but all those
28 ;; are really set up by the terminal initialization code, which mines them
29 ;; out of termcap. This package is here to define the keypad comma, dash
30 ;; and period (which aren't in termcap's repertoire) and the function for
31 ;; changing from 80 to 132 columns & vv.
35 ;; Set up function-key-map entries that termcap and terminfo don't know.
36 (load "term/lk201" nil t)
38 ;;; Controlling the screen width.
39 (defconst vt100-wide-mode (= (frame-width) 132)
40 "t if vt100 is in 132-column mode.")
42 (defun vt100-wide-mode (&optional arg)
43 "Toggle 132/80 column mode for vt100s.
44 With positive argument, switch to 132-column mode.
45 With negative argument, switch to 80-column mode."
48 (if (null arg) (not vt100-wide-mode)
49 (> (prefix-numeric-value arg) 0)))
50 (send-string-to-terminal (if vt100-wide-mode "\e[?3h" "\e[?3l"))
51 (set-frame-width terminal-frame (if vt100-wide-mode 132 80)))
53 ;;; vt100.el ends here