lisp/term/wyse50.el

   1 ; Like all the other files in this dir, this one needs to be redone
   2 ; for the new way of handling function keys.
   3
   4 ; Terminal mode for Wyse 50
   5 ; should work well for Televideo Tvi 925 though it's an overkill
   6 ; Author Daniel Pfeiffer <pfeiffer@cix.cict.fr> january 1991
   7
   8 (require 'keypad)
   9
  10 ; at least some of these should be transferred to keypad.el
  11 (keypad-default "A" '(lambda () (interactive)
  12                        ; actually insert an empty line
  13                        (beginning-of-line)
  14                        (open-line 1)))
  15 (keypad-default "E" 'kill-line)
  16 ; (keypad-default "h" 'execute-extended-command)
  17 (define-key function-keymap "h" 'execute-extended-command)  ; bad, bad !!
  18 (keypad-default "H" 'shell-command)
  19 (keypad-default "I" '(lambda () (interactive)
  20                        (insert ? ))) ; works even in overwrite-mode
  21 (keypad-default "L" '(lambda () (interactive)
  22                        ; delete the whole line
  23                        (beginning-of-line)
  24                        (kill-line 1)))
  25 (keypad-default "M" 'overwrite-mode)
  26 (keypad-default "\^e" 'shell)                   ; F5
  27 (keypad-default "\^f" 'dired)                   ; F6
  28 (keypad-default "\^g" 'rnews)                   ; F7
  29 (keypad-default "\^h" 'rmail)                   ; F8
  30
  31 (keypad-default "\^i" 'delete-other-windows)    ; F9
  32 (keypad-default "\^j" 'other-window)            ; F10
  33 (keypad-default "\^k" 'split-window-vertically) ; F11
  34
  35 (keypad-default "\^m" 'help-for-help)           ; F13
  36 (keypad-default "\^n" 'toggle-screen-width)     ; F14
  37 (keypad-default "\^o" 'set-function-key)        ; F15
  38
  39
  40 ; Keys that don't conflict with Emacs defaults
  41 ; I write \M-x and \C-x for what the user types, \ex and \^x for key sequences
  42 (setup-terminal-keymap global-map
  43       '(("\M-?" . ?\?)  ; Esc ?
  44         ("\eI" . ?T)    ; Shift Tab
  45         ("\eJ" . ?P)    ; Shift Prev PAGE
  46         ("\eK" . ?N)    ; PAGE Next
  47         ("\eY" . ?C)    ; Shift Scrn CLR
  48         ("\eT" . ?E)    ; CLR Line
  49         ("\^^" . ?h)    ; Home
  50         ("\M-\^^" . ?H) ; Esc Home
  51         ("\eQ" . ?I)    ; INS Char
  52         ("\eE" . ?A)    ; Shift Line INS
  53         ("\eW" . ?D)    ; DEL Char
  54         ("\eR" . ?L)))  ; Shift Line DEL
  55
  56 ; Print -- put in some extra security
  57 (global-set-key "\eP" '(lambda () (interactive)
  58                           (if (y-or-n-p
  59                                (concat "Print buffer "
  60                                        (buffer-name) "? "))
  61                               (print-buffer))))
  62
  63
  64 ; this is an ugly hack for a nasty problem:
  65 ; Wyse 50 takes one character cell to store video attributes (which seems to
  66 ; explain width 79 rather than 80, column 1 is not used!!!).
  67 ; On killing (C-x C-c) the end inverse code (on column 1 of line 24)
  68 ; of the mode line is overwritten AFTER all the y-or-n questions.
  69 ; This causes the attribute to remain in effect until the mode line has
  70 ; scrolled of the screen.  Suspending (C-z) does not cause this problem.
  71 ; On such terminals, Emacs should sacrifice the first and last character of
  72 ; each mode line, rather than a whole screen column!
  73 (setq kill-emacs-hook '(lambda () (interactive)
  74                          (send-string-to-terminal
  75                           (concat "\ea23R" (1+ (screen-width)) "C\eG0"))))
  76
  77
  78 ; This function does more than its name which was copied from term/vt100.el
  79 ; Some more neutral name should be used thru-out term/*.el to simplify
  80 ; programming term-setup-hook
  81 (defun enable-arrow-keys ()
  82   "To be called by term-setup-hook. Overrides 6 Emacs standard keys
  83 whose functions are then typed as follows:
  84 C-a     Funct left-arrow, C-a C-a
  85 C-h     M-?
  86 LFD     Funct Return, some modes override down-arrow via LFD
  87 C-k     CLR Line
  88 C-l     Shift Scrn CLR
  89 M-r     M-x move-to-window-line, Funct up-arrow or down-arrow are similar
  90 All special keys except Send, Shift Ins, Shift Home and shifted functions keys
  91 are assigned some hopefully useful meaning."
  92   (interactive)
  93
  94   ; Function keys
  95   (define-key global-map "\^a" (define-prefix-command 'Funct-prefix))
  96
  97   ; Arrow keys
  98   (setup-terminal-keymap global-map
  99       '(("\C-a\C-a" . beginning-of-line)        ; for auld lang syne
 100         ("\^a\^m\^m" . newline-and-indent)
 101
 102         ("\^k" . ?u)    ; up-arrow
 103         ("\^j" . ?d)    ; down-arrow
 104         ("\^l" . ?r)    ; right-arrow
 105         ("\^h" . ?l)    ; left-arrow
 106
 107         ; Terminal needs both Ins and Repl but Emacs knows how to toggle
 108         ; with just one key. No need to override Ins which is "\eq".
 109         ("\er" . ?M)            ; Repl
 110
 111         ("\^a\^i\^m" . ?t)      ; Funct Tab
 112
 113         ; Function keys F1 thru F16  (we don't define shifted function keys,
 114         ; they send the same code with the middle character in lowercase.
 115         ; eg. "Shift F2" is the same as "Funct a" which is more mnemonic but
 116         ; keypad.el doesn't provide enough codes to accomodate all these)
 117         ("\^a@\^m" . 1)         ("\^aH\^m" . 9)
 118         ("\^aA\^m" . 2)         ("\^aI\^m" . 10)
 119         ("\^aB\^m" . 3)         ("\^aJ\^m" . 11)
 120         ("\^aC\^m" . 4)         ("\^aK\^m" . 12)
 121         ("\^aD\^m" . 5)         ("\^aL\^m" . 13)
 122         ("\^aE\^m" . 6)         ("\^aM\^m" . 14)
 123         ("\^aF\^m" . 7)         ("\^aN\^m" . 15)
 124         ("\^aG\^m" . 8)         ("\^aO\^m" . 16)
 125
 126         ; Funct Arrow keys
 127         ("\^a\^k\^m" . (lambda (n) (interactive "p")
 128                             (move-to-window-line (1- n))))
 129         ("\^a\^j\^m" . (lambda (n) (interactive "p")
 130                             (move-to-window-line (- n))))
 131         ("\^a\^h\^m" . beginning-of-line)
 132         ("\^a\^l\^m" . end-of-line)))
 133
 134   ; forget self to put memory to some serious use
 135   (fmakunbound 'enable-arrow-keys))
 136
 137
 138 (defun toggle-screen-width ()
 139   "Alternate between 80 and 132 columns."
 140   (interactive)
 141   (if (<= (screen-width) 80)
 142       (progn
 143         (send-string-to-terminal "\e`;")
 144         (set-screen-width 131))
 145     (send-string-to-terminal "\e`:")
 146     (set-screen-width 79)))
 147
 148 ;-----------------------------------------------------------------------------
 149 ; this function is completely independent of wyse, it should be auto-loadable
 150 ; (presumably from keypad.el) for use in ~/emacs.  It should be the only thing
 151 ; users need to know about all this unintelligible "forwarding" gibberish.
 152 ; This paves the way for a save-function-keys (some day or sleepless night)
 153 ; that will edit calls like (set-function-key ?x 'do-whatever) in ~/.emacs.
 154 (defun set-function-key (key &optional def)
 155   "Prompt for a function or other special key and assign it a meaning.
 156 The key must have been \"forwarded\" to a character by term/*.el.
 157
 158 As a function takes two args CHAR and DEF, with DEF as in define-key.
 159 If your terminals term/*.el forwards a physical key to CHAR (before or after
 160 calling this function), then that key will mean DEF, else it is ignored.
 161 CHAR is one of the following:
 162 For numbered function keys
 163         0, 1, ..., 24  (or ?\\^@, ?\\^a, ..., ?\\^x which is the same)
 164 For keypad keys in application mode
 165         ?0, ?1, ..., ?9  --  keypad key labelled with that digit,
 166                 but only if that key is not an arrow key (see ?u, ?d, ?r, ?l).
 167         ?-  --  keypad key labelled `-'.
 168         ?.  --  keypad key labelled `.'.
 169         ?,  --  keypad key labelled `,'.
 170         ?e  --  key labelled enter.
 171 For keys labelled with some words or a symbol
 172         ?a  --  clear all tabs key.
 173         ?A  --  insert line key.
 174         ?C  --  clear screen key.
 175         ?c  --  erase key.
 176         ?D  --  delete character key.
 177         ?d  --  down-arrow.
 178         ?E  --  clear to end of line key.
 179         ?e  --  key labelled enter.
 180         ?f  --  find key or search key.
 181         ?F  --  scroll forward key.
 182         ?H  --  home-down.
 183         ?h  --  home-position key.
 184         ?I  --  insert character key
 185                 If there is just an \"insert\" key, it should be this.
 186         ?k  --  delete key or remove key.
 187         ?L  --  delete line key.
 188         ?l  --  left-arrow.
 189         ?M  --  exit insert mode key.
 190         ?N  --  next page key.
 191         ?p  --  portrait mode.
 192         ?P  --  previous page key.
 193         ?q  --  landscape mode.
 194         ?r  --  right-arrow.
 195         ?R  --  scroll reverse key.
 196         ?S  --  clear to end of screen key.
 197         ?s  --  select key.
 198         ?t  --  clear tab this column key.
 199         ?T  --  set tab this column key.
 200         ?u  --  up-arrow.
 201         ?x  --  do key.
 202         ?\\?  --  help."
 203   (interactive "kHit key to redefine")
 204   (let ((map function-keymap))
 205     (if (integerp key)
 206         ()
 207       ; reinvent lookup-key to get (map . char) instead of def of char in map
 208       (setq map (or (lookup-key global-map
 209                                 (substring key 0 (1- (length key))))
 210                     global-map)
 211             key (string-to-char (substring key (1- (length key)))))
 212       (while (symbolp map)
 213         (setq map (symbol-function map)))
 214       (setq map (if (listp map)
 215                     (cdr (assq key (cdr map)))
 216                   (aref map key)))
 217       (if (and (consp map)
 218                (integerp (cdr map)))
 219           (setq key (cdr map)
 220                 map (car map))  ; function-keymap usually
 221         (error "Key is not a \"forwarded\" definition.")))
 222     (if def
 223         ()
 224       (setq def (read-command "command (default last keyboard macro): "))
 225       (if (string-equal (symbol-name def) "")
 226           (setq def last-kbd-macro))
 227       (setq command-history     ; nonsense really, since you don't see
 228             (cons               ; key as in a function call (?char)
 229              (list 'set-function-key key
 230                    (if (stringp def) def (list 'quote def)))
 231              command-history)))
 232     ; all we do when called as a function
 233     (define-key map (char-to-string key) def)))
 234
 235