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annotate lisp/term/vt100.el @ 5697:40fbceabaafd

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author Stephen J. Turnbull <stephen@xemacs.org>
date Mon, 24 Dec 2012 03:08:33 +0900
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1 ;;; vt100.el --- define VT100 function key sequences in function-key-map
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2
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3 ;; Copyright (C) 1989, 1993 Free Software Foundation, Inc.
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5 ;; Author: FSF
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6 ;; Keywords: terminals
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8 ;; This file is part of XEmacs.
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9 ;;
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10 ;; XEmacs is free software: you can redistribute it and/or modify it
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11 ;; under the terms of the GNU General Public License as published by the
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12 ;; Free Software Foundation, either version 3 of the License, or (at your
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13 ;; option) any later version.
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14 ;;
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15 ;; XEmacs is distributed in the hope that it will be useful, but WITHOUT
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16 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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17 ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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18 ;; for more details.
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19 ;;
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20 ;; You should have received a copy of the GNU General Public License
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21 ;; along with XEmacs. If not, see <http://www.gnu.org/licenses/>.
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23 ;;; Synched up with: FSF 21.0.103.
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25 ;;; Commentary:
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26
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27 ;; Uses the Emacs 19 terminal initialization features --- won't work with 18.
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28
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29 ;; Handles all VT100 clones, including the Apollo terminal. Also handles
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30 ;; the VT200 --- its PF- and arrow- keys are different, but all those
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31 ;; are really set up by the terminal initialization code, which mines them
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32 ;; out of termcap. This package is here to define the keypad comma, dash
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33 ;; and period (which aren't in termcap's repertoire) and the function for
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34 ;; changing from 80 to 132 columns & vv.
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35
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36 ;;; Code:
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37
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38 ;; Set up function-key-map entries that termcap and terminfo don't know.
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39 (load "term/lk201" nil t)
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40
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41 ;;; Controlling the screen width.
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42 (defvar vt100-wide-mode (= (frame-width) 132)
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43 "t if vt100 is in 132-column mode.")
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44
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45 (defun vt100-wide-mode (&optional arg)
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46 "Toggle 132/80 column mode for vt100s.
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47 With positive argument, switch to 132-column mode.
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48 With negative argument, switch to 80-column mode."
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49 (interactive "P")
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50 (setq vt100-wide-mode
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51 (if (null arg) (not vt100-wide-mode)
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52 (> (prefix-numeric-value arg) 0)))
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53 (send-string-to-terminal (if vt100-wide-mode "\e[?3h" "\e[?3l"))
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54 (set-frame-width terminal-frame (if vt100-wide-mode 132 80)))
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56 ;;; vt100.el ends here