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 GNU Emacs.
9 ;;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;;; it under the terms of the GNU General Public License as published by
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12 ;;; any later version.
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25 ;; Uses the Emacs 19 terminal initialization features --- won't work with 18.
27 ;; Handles all VT100 clones, including the Apollo terminal. Also handles
28 ;; the VT200 --- its PF- and arrow- keys are different, but all those
29 ;; are really set up by the terminal initialization code, which mines them
30 ;; out of termcap. This package is here to define the keypad comma, dash
31 ;; and period (which aren't in termcap's repertoire) and the function for
32 ;; changing from 80 to 132 columns & vv.
36 ;; Set up function-key-map entries that termcap and terminfo don't know.
37 (load "term/lk201" nil t)
39 ;;; Controlling the screen width.
40 (defconst vt100-wide-mode (= (frame-width) 132)
41 "t if vt100 is in 132-column mode.")
43 (defun vt100-wide-mode (&optional arg)
44 "Toggle 132/80 column mode for vt100s.
45 With positive argument, switch to 132-column mode.
46 With negative argument, switch to 80-column mode."
49 (if (null arg) (not vt100-wide-mode)
50 (> (prefix-numeric-value arg) 0)))
51 (send-string-to-terminal (if vt100-wide-mode "\e[?3h" "\e[?3l"))
52 (set-frame-width terminal-frame (if vt100-wide-mode 132 80)))
54 ;;; vt100.el ends here