lisp/term/vt100.el

   1 ;;; vt100.el --- define VT100 function key sequences in function-key-map
   2
   3 ;; Copyright (C) 1989, 1993, 2001-2016 Free Software Foundation, Inc.
   4
   5 ;; Author: FSF
   6 ;; Keywords: terminals
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software: you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation, either version 3 of the License, or
  13 ;; (at your option) any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  22
  23 ;;; Commentary:
  24
  25 ;; Handles all VT100 clones, including the Apollo terminal.  Also handles
  26 ;; the VT200 --- its PF- and arrow- keys are different, but all those
  27 ;; are really set up by the terminal initialization code, which mines them
  28 ;; out of termcap.  This package is here to define the keypad comma, dash
  29 ;; and period (which aren't in termcap's repertoire) and the function for
  30 ;; changing from 80 to 132 columns & vv.
  31
  32 ;;; Code:
  33
  34 ;; Set up function-key-map entries that termcap and terminfo don't know.
  35
  36 (defun terminal-init-vt100 ()
  37   "Terminal initialization function for vt100."
  38   (tty-run-terminal-initialization (selected-frame) "lk201"))
  39
  40 ;;; Controlling the screen width.
  41 (define-minor-mode vt100-wide-mode
  42   "Toggle 132/80 column mode for vt100s.
  43 With a prefix argument ARG, switch to 132-column mode if ARG is
  44 positive, and 80-column mode otherwise.  If called from Lisp,
  45 switch to 132-column mode if ARG is omitted or nil."
  46   :global t :init-value (= (frame-width) 132)
  47   :group 'terminals
  48   (send-string-to-terminal (if vt100-wide-mode "\e[?3h" "\e[?3l"))
  49   (set-frame-width terminal-frame (if vt100-wide-mode 132 80)))
  50
  51 (provide 'term/vt100)
  52
  53 ;;; vt100.el ends here