lisp/sun-keys.el

   1 ;;; sun-keys.el --- support for Sun function keys
   2
   3 ;; Author: Ian G. Batten <batten@uk.ac.bham.multics>
   4 ;; Last-Modified: 30 May 1992
   5 ;; Keywords: terminals
   6
   7 ;;; Copyright (C) 1986 Free Software Foundation, Inc.
   8 ;;;
   9 ;;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software; you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation; either version 2, or (at your option)
  14 ;; any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs; see the file COPYING.  If not, write to
  23 ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
  24
  25 ;;; Commentary:
  26
  27 ;;; Support (cleanly) for Sun function keys.  Provides help facilities,
  28 ;;; better diagnostics, etc.
  29 ;;;
  30 ;;; To use: make sure your .ttyswrc binds 'F1' to <ESC> * F1 <CR> and so on.
  31 ;;;         load this lot from your start_up
  32
  33 ;;; Code:
  34
  35 (defun sun-function-keys-dispatch (arg)
  36   "Dispatcher for function keys."
  37   (interactive "p")
  38   (let* ((key-stroke (read t))
  39          (command (assq key-stroke sun-function-keys-command-list)))
  40     (cond (command (funcall (cdr command) arg))
  41           (t (error "Unbound function key %s" key-stroke)))))
  42
  43 (defvar sun-function-keys-command-list
  44   '((F1 . sun-function-keys-describe-bindings)
  45     (R8 . previous-line)                ; arrow keys
  46     (R10 . backward-char)
  47     (R12 . forward-char)
  48     (R14 . next-line)))
  49
  50 (defun sun-function-keys-bind-key (arg1 arg2)
  51   "Bind a specified key."
  52   (interactive "xFunction Key Cap Label:
  53 CCommand To Use:")
  54   (setq sun-function-keys-command-list
  55         (cons (cons arg1 arg2) sun-function-keys-command-list)))
  56
  57 (defun sun-function-keys-describe-bindings (arg)
  58   "Describe the function key bindings we're running"
  59   (interactive)
  60   (with-output-to-temp-buffer "*Help*"
  61     (sun-function-keys-write-bindings
  62      (sort (copy-sequence sun-function-keys-command-list)
  63            '(lambda (x y) (string-lessp (car x) (car y)))))))
  64
  65 (defun sun-function-keys-write-bindings (list)
  66   (cond ((null list)
  67          t)
  68         (t
  69          (princ (format "%s: %s\n"
  70                         (car (car list))
  71                         (cdr (car list))))
  72          (sun-function-keys-write-bindings (cdr list)))))
  73
  74 (global-set-key "\e*" 'sun-function-keys-dispatch)
  75
  76 (make-variable-buffer-local 'sun-function-keys-command-list)
  77
  78 ;;; sun-keys.el ends here