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57 lines
2.1 KiB
EmacsLisp
57 lines
2.1 KiB
EmacsLisp
;;; vt100.el --- define VT100 function key sequences in function-key-map
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;; Copyright (C) 1989, 1993 Free Software Foundation, Inc.
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;; Author: FSF
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;; Keywords: terminals
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;; Uses the Emacs 19 terminal initialization features --- won't work with 18.
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;; Handles all VT100 clones, including the Apollo terminal. Also handles
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;; the VT200 --- its PF- and arrow- keys are different, but all those
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;; are really set up by the terminal initialization code, which mines them
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;; out of termcap. This package is here to define the keypad comma, dash
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;; and period (which aren't in termcap's repertoire) and the function for
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;; changing from 80 to 132 columns & vv.
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;;; Code:
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;; Set up function-key-map entries that termcap and terminfo don't know.
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(load "term/lk201" nil t)
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;;; Controlling the screen width.
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(defvar vt100-wide-mode (= (frame-width) 132)
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"t if vt100 is in 132-column mode.")
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(defun vt100-wide-mode (&optional arg)
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"Toggle 132/80 column mode for vt100s.
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With positive argument, switch to 132-column mode.
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With negative argument, switch to 80-column mode."
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(interactive "P")
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(setq vt100-wide-mode
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(if (null arg) (not vt100-wide-mode)
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(> (prefix-numeric-value arg) 0)))
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(send-string-to-terminal (if vt100-wide-mode "\e[?3h" "\e[?3l"))
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(set-frame-width terminal-frame (if vt100-wide-mode 132 80)))
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;;; vt100.el ends here
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