;;; AT386.el --- terminal support package for IBM AT keyboards  -*- lexical-binding: t -*-

;; Copyright (C) 1992, 2001-2022 Free Software Foundation, Inc.

;; Author: Eric S. Raymond <esr@snark.thyrsus.com>
;; Keywords: terminals

;; This file is part of GNU Emacs.

;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.

;;; Commentary:

;;; Code:

(defun terminal-init-AT386 ()
  "Terminal initialization function for AT386."
  (let ((AT386-keypad-map (lookup-key input-decode-map "\e[")))
    ;; The terminal initialization should already have set up some keys
    (if (not (keymapp AT386-keypad-map))
	(error "What?  Your AT386 termcap/terminfo has no keycaps in it"))

    ;; Equivalents of these are set up automatically by termcap/terminfo
    ;;  (define-key AT386-keypad-map "A" [up])
    ;;  (define-key AT386-keypad-map "B" [down])
    ;;  (define-key AT386-keypad-map "C" [right])
    ;;  (define-key AT386-keypad-map "D" [left])

    ;; These would be set up by terminfo, but not termcap
    (define-key AT386-keypad-map "H" [home])
    (define-key AT386-keypad-map "Y" [end])
    (define-key AT386-keypad-map "U" [next])	;; PgDn
    (define-key AT386-keypad-map "V" [prior])	;; PgUp
    (define-key AT386-keypad-map "@" [insert])	;; Ins key

    ;; These are not normally set up by either
    (define-key AT386-keypad-map "G" [kp-5])	;; Unlabeled center key
    (define-key AT386-keypad-map "S" [kp-subtract])
    (define-key AT386-keypad-map "T" [kp-add])

    ;; Arrange for the ALT key to be equivalent to ESC
    (define-key input-decode-map "\eN" [ALT])
    (define-key local-function-key-map [ALT] [27])
    ))

(provide 'term/AT386)

;;; AT386.el ends here
