lisp/sun-keys.el

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