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;;; wyse50.el --- terminal support code for Wyse 50
;; Copyright (C) 1989, 1993-1994, 2001-2015 Free Software Foundation,
;; Inc.
;; Author: Daniel Pfeiffer <occitan@esperanto.org>,
;; Jim Blandy <jimb@occs.cs.oberlin.edu>
;; 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 <http://www.gnu.org/licenses/>.
;;; Commentary:
;; Rewritten for Emacs 19 by jimb, January 1992
;; Cleaned up for new terminal package conventions by esr, March 1993
;; Should work well for Televideo TVI 925 although it's overkill.
;;
;; The Wyse50 is ergonomically wonderful, but its escape-sequence design sucks
;; rocks. The left-arrow key emits a backspace (!) and the down-arrow a line
;; feed (!!). Thus, you have to unbind some commonly-used Emacs keys to
;; enable the arrows.
;;; Code:
(defvar wyse50-terminal-map
(let ((map (make-sparse-keymap)))
(dolist (key-definition
'( ;; These might be set up by termcap and terminfo
("\C-k" [up])
("\C-j" [down])
("\C-l" [right])
("\C-h" [left])
("\^a@\^m" [f1])
("\^aA\^m" [f2])
("\^aB\^m" [f3])
("\^aC\^m" [f4])
("\^aD\^m" [f5])
("\^aE\^m" [f6])
("\^aF\^m" [f7])
("\^aG\^m" [f8])
("\^aH\^m" [f9])
;; These might be set up by terminfo
("\eK" [next])
("\eT" [clearline])
("\^^" [home])
("\e\^^" [end])
("\eQ" [insert])
("\eE" [insertline])
("\eR" [deleteline])
("\eP" [print])
("\er" [replace])
("\^aI\^m" [f10])
("\^aJ\^m" [f11])
("\^aK\^m" [f12])
("\^aL\^m" [f13])
("\^aM\^m" [f14])
("\^aN\^m" [f15])
("\^aO\^m" [f16])
("\^a`\^m" [f17])
("\^aa\^m" [f18])
("\^ab\^m" [f19])
("\^ac\^m" [f20])
("\^ad\^m" [f21])
("\^ae\^m" [f22])
("\^af\^m" [f23])
("\^ag\^m" [f24])
("\^ah\^m" [f25])
("\^ai\^m" [f26])
("\^aj\^m" [f27])
("\^ak\^m" [f28])
("\^al\^m" [f29])
("\^am\^m" [f30])
("\^an\^m" [f31])
("\^ao\^m" [f32])
;; Terminfo may know about these, but X won't
("\eI" [key-stab]) ;; Not an X keysym
("\eJ" [key-snext]) ;; Not an X keysym
("\eY" [key-clear]) ;; Not an X keysym
;; These are totally strange :-)
("\eW" [?\C-?]) ;; Not an X keysym
("\^a\^k\^m" [funct-up]) ;; Not an X keysym
("\^a\^j\^m" [funct-down]) ;; Not an X keysym
("\^a\^l\^m" [funct-right]) ;; Not an X keysym
("\^a\^h\^m" [funct-left]) ;; Not an X keysym
("\^a\^m\^m" [funct-return]) ;; Not an X keysym
("\^a\^i\^m" [funct-tab]) ;; Not an X keysym
))
(define-key map
(car key-definition) (nth 1 key-definition)))
map))
(defun terminal-init-wyse50 ()
"Terminal initialization function for wyse50."
;; Use inheritance to let the main keymap override these defaults.
;; This way we don't override terminfo-derived settings or settings
;; made in the init file.
(let ((m (copy-keymap wyse50-terminal-map)))
(set-keymap-parent m (keymap-parent input-decode-map))
(set-keymap-parent input-decode-map m))
;; Miscellaneous hacks
;; This is an ugly hack for a nasty problem:
;; Wyse 50 takes one character cell to store video attributes (which seems to
;; explain width 79 rather than 80, column 1 is not used!!!).
;; On killing (C-x C-c) the end inverse code (on column 1 of line 24)
;; of the mode line is overwritten AFTER all the y-or-n questions.
;; This causes the attribute to remain in effect until the mode line has
;; scrolled of the screen. Suspending (C-z) does not cause this problem.
;; On such terminals, Emacs should sacrifice the first and last character of
;; each mode line, rather than a whole screen column!
(add-hook 'kill-emacs-hook
(function (lambda () (interactive)
(send-string-to-terminal
(concat "\ea23R" (1+ (frame-width)) "C\eG0"))))))
(defun enable-arrow-keys ()
"To be called by `tty-setup-hook'. Overrides 6 Emacs standard keys
whose functions are then typed as follows:
C-a Funct Left-arrow
C-h M-?
LFD Funct Return, some modes override down-arrow via LFD
C-k CLR Line
C-l Scrn CLR
M-r M-x move-to-window-line, Funct up-arrow or down-arrow are similar"
(interactive)
;; Not needed any more now that we use input-decode-map.
;; (dolist (key-definition
;; ;; By unsetting C-a and then binding it to a prefix, we
;; ;; allow the rest of the function keys which start with C-a
;; ;; to be recognized.
;; '(("\C-a" nil)
;; ("\C-k" nil)
;; ("\C-j" nil)
;; ("\C-l" nil)
;; ("\C-h" nil)
;; ("\er" nil)))
;; (global-set-key (car key-definition)
;; (nth 1 key-definition)))
(fset 'enable-arrow-keys nil))
;;; wyse50.el ends here
|
