Commit ef61be13 authored by Eric S. Raymond's avatar Eric S. Raymond
Browse files

Added headers, commented out code the duplicates startup effects.

parent 48e3c9a2
;;;; Define VT100 function key escape sequences in function-key-map.
;;; CSI sequences - those that start with "\e[".
(define-prefix-command 'vt100-CSI-prefix)
(define-key function-key-map "\e[" 'vt100-CSI-prefix)
(define-key vt100-CSI-prefix "A" [up])
(define-key vt100-CSI-prefix "B" [down])
(define-key vt100-CSI-prefix "C" [right])
(define-key vt100-CSI-prefix "D" [left])
(defun enable-arrow-keys ()
"Enable the use of the VT100 arrow keys for cursor motion.
Because of the nature of the VT100, this unavoidably breaks
the standard Emacs command ESC [; therefore, it is not done by default,
but only if you give this command."
(interactive)
(global-unset-key "\e["))
;;; SS3 sequences - those that start with "\eO".
(define-prefix-command 'vt100-SS3-prefix)
(define-key function-key-map "\eO" 'vt100-SS3-prefix)
(define-key vt100-SS3-prefix "A" [up])
(define-key vt100-SS3-prefix "B" [down]) ; down-arrow
(define-key vt100-SS3-prefix "C" [right]) ; right-arrow
(define-key vt100-SS3-prefix "D" [left]) ; left-arrow
(define-key vt100-SS3-prefix "M" [kp-enter]) ; Enter
(define-key vt100-SS3-prefix "P" [kp-f1]) ; PF1
(define-key vt100-SS3-prefix "Q" [kp-f2]) ; PF2
(define-key vt100-SS3-prefix "R" [kp-f3]) ; PF3
(define-key vt100-SS3-prefix "S" [kp-f4]) ; PF4
(define-key vt100-SS3-prefix "l" [kp-separator]) ; ,
(define-key vt100-SS3-prefix "m" [kp-subtract]) ; -
(define-key vt100-SS3-prefix "n" [kp-period]) ; .
(define-key vt100-SS3-prefix "p" [kp-0]) ; 0
(define-key vt100-SS3-prefix "q" [kp-1]) ; 1
(define-key vt100-SS3-prefix "r" [kp-2]) ; 2
(define-key vt100-SS3-prefix "s" [kp-3]) ; 3
(define-key vt100-SS3-prefix "t" [kp-4]) ; 4
(define-key vt100-SS3-prefix "u" [kp-5]) ; 5
(define-key vt100-SS3-prefix "v" [kp-6]) ; 6
(define-key vt100-SS3-prefix "w" [kp-7]) ; 7
(define-key vt100-SS3-prefix "x" [kp-8]) ; 8
(define-key vt100-SS3-prefix "y" [kp-9]) ; 9
;;; vt100.el --- define VT100 function key sequences in function-key-map
;; Author: FSF
;; Keywords: terminals
;; Copyright (C) 1989 Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY. No author or distributor
;; accepts responsibility to anyone for the consequences of using it
;; or for whether it serves any particular purpose or works at all,
;; unless he says so in writing. Refer to the GNU Emacs General Public
;; License for full details.
;; Everyone is granted permission to copy, modify and redistribute
;; GNU Emacs, but only under the conditions described in the
;; GNU Emacs General Public License. A copy of this license is
;; supposed to have been given to you along with GNU Emacs so you
;; can know your rights and responsibilities. It should be in a
;; file named COPYING. Among other things, the copyright notice
;; and this notice must be preserved on all copies.
;;; Commentary:
;; Uses the Emacs 19 terminal initialization features --- won't work with 18.
;; Handles all VT100 clones, including the Apollo terminal. Also handles
;; the VT200 --- its PF- and arrow- keys are different, but all those
;; are really set up by the terminal initialization code, which mines them
;; out of termcap. This package is here to define the keypad comma, dash
;; and period (which aren't in termcap's repertoire) and the function for
;; changing from 80 to 132 columns & vv.
;;; Code:
;; CSI sequences - those that start with "\e[".
;; Termcap or terminfo should set these up automatically
;; (if (boundp 'vt100-CSI-prefix)
;; nil
;; (define-prefix-command 'vt100-CSI-prefix)
;; (define-key function-key-map "\e[" 'vt100-CSI-prefix)
;;
;; (define-key vt100-CSI-prefix "A" [up])
;; (define-key vt100-CSI-prefix "B" [down])
;; (define-key vt100-CSI-prefix "C" [right])
;; (define-key vt100-CSI-prefix "D" [left])
;; )
;; SS3 sequences - those that start with "\eO".
(if (boundp 'vt100-SS3-prefix)
nil
(define-prefix-command 'vt100-SS3-prefix)
(define-key function-key-map "\eO" 'vt100-SS3-prefix)
;; These will typically be set up automatically by termcap or terminfo
;; (define-key vt100-SS3-prefix "A" [up]) ; up-arrow
;; (define-key vt100-SS3-prefix "B" [down]) ; down-arrow
;; (define-key vt100-SS3-prefix "C" [right]) ; right-arrow
;; (define-key vt100-SS3-prefix "D" [left]) ; left-arrow
;; (define-key vt100-SS3-prefix "M" [kp-enter]) ; Enter
;; (define-key vt100-SS3-prefix "P" [kp-f1]) ; PF1
;; (define-key vt100-SS3-prefix "Q" [kp-f2]) ; PF2
;; (define-key vt100-SS3-prefix "R" [kp-f3]) ; PF3
;; (define-key vt100-SS3-prefix "S" [kp-f4]) ; PF4
;; (define-key vt100-SS3-prefix "p" [kp-0]) ; 0
;; (define-key vt100-SS3-prefix "q" [kp-1]) ; 1
;; (define-key vt100-SS3-prefix "r" [kp-2]) ; 2
;; (define-key vt100-SS3-prefix "s" [kp-3]) ; 3
;; (define-key vt100-SS3-prefix "t" [kp-4]) ; 4
;; (define-key vt100-SS3-prefix "u" [kp-5]) ; 5
;; (define-key vt100-SS3-prefix "v" [kp-6]) ; 6
;; (define-key vt100-SS3-prefix "w" [kp-7]) ; 7
;; (define-key vt100-SS3-prefix "x" [kp-8]) ; 8
;; (define-key vt100-SS3-prefix "y" [kp-9]) ; 9
;; Neither termcap nor terminfo will set these
(define-key vt100-SS3-prefix "l" [kp-separator]) ; ,
(define-key vt100-SS3-prefix "m" [kp-subtract]) ; -
(define-key vt100-SS3-prefix "n" [kp-period]) ; .
)
;;; Controlling the screen width.
(defconst vt100-wide-mode (= (frame-width) 132)
"t if vt100 is in 132-column mode.")
......@@ -60,3 +93,5 @@ but only if you give this command."
(> (prefix-numeric-value arg) 0)))
(send-string-to-terminal (if vt100-wide-mode "\e[?3h" "\e[?3l"))
(set-frame-width (if vt100-wide-mode 132 80)))
;;; vt100.el ends here
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