lisp/emulation/ws-mode.el

   1 ;;; ws-mode.el --- WordStar emulation mode for GNU Emacs
   2
   3 ;; Copyright (C) 1991 Free Software Foundation, Inc.
   4
   5 ;; Author: Juergen Nickelsen <nickel@cs.tu-berlin.de>
   6 ;; Version: 0.7
   7 ;; Keywords: emulations
   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 the
  23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  24 ;; Boston, MA 02111-1307, USA.
  25
  26 ;;; Commentary:
  27
  28 ;; This emulates WordStar, with a major mode.
  29
  30 ;;; Code:
  31
  32 (defvar wordstar-mode-map nil "")
  33 (defvar wordstar-C-j-map nil "")
  34 (defvar wordstar-C-k-map nil "")
  35 (defvar wordstar-C-o-map nil "")
  36 (defvar wordstar-C-q-map nil "")
  37
  38 (if wordstar-mode-map
  39     ()
  40   (setq wordstar-mode-map (make-keymap))
  41   ;;  (setq wordstar-C-j-map (make-keymap)) ; later, perhaps
  42   (setq wordstar-C-k-map (make-keymap))
  43   (setq wordstar-C-o-map (make-keymap))
  44   (setq wordstar-C-q-map (make-keymap))
  45
  46   (define-key wordstar-mode-map "\C-a" 'backward-word)
  47   (define-key wordstar-mode-map "\C-b" 'fill-paragraph)
  48   (define-key wordstar-mode-map "\C-c" 'scroll-up)
  49   (define-key wordstar-mode-map "\C-d" 'forward-char)
  50   (define-key wordstar-mode-map "\C-e" 'previous-line)
  51   (define-key wordstar-mode-map "\C-f" 'forward-word)
  52   (define-key wordstar-mode-map "\C-g" 'delete-char)
  53   (define-key wordstar-mode-map "\C-h" 'backward-char)
  54   (define-key wordstar-mode-map "\C-i" 'indent-for-tab-command)
  55   (define-key wordstar-mode-map "\C-j" 'help-for-help)
  56   (define-key wordstar-mode-map "\C-k" wordstar-C-k-map)
  57   (define-key wordstar-mode-map "\C-l" 'ws-repeat-search)
  58   (define-key wordstar-mode-map "\C-n" 'open-line)
  59   (define-key wordstar-mode-map "\C-o" wordstar-C-o-map)
  60   (define-key wordstar-mode-map "\C-p" 'quoted-insert)
  61   (define-key wordstar-mode-map "\C-q" wordstar-C-q-map)
  62   (define-key wordstar-mode-map "\C-r" 'scroll-down)
  63   (define-key wordstar-mode-map "\C-s" 'backward-char)
  64   (define-key wordstar-mode-map "\C-t" 'kill-word)
  65   (define-key wordstar-mode-map "\C-u" 'keyboard-quit)
  66   (define-key wordstar-mode-map "\C-v" 'overwrite-mode)
  67   (define-key wordstar-mode-map "\C-w" 'scroll-down-line)
  68   (define-key wordstar-mode-map "\C-x" 'next-line)
  69   (define-key wordstar-mode-map "\C-y" 'kill-complete-line)
  70   (define-key wordstar-mode-map "\C-z" 'scroll-up-line)
  71
  72   ;; wordstar-C-k-map
  73
  74   (define-key wordstar-C-k-map " " ())
  75   (define-key wordstar-C-k-map "0" 'ws-set-marker-0)
  76   (define-key wordstar-C-k-map "1" 'ws-set-marker-1)
  77   (define-key wordstar-C-k-map "2" 'ws-set-marker-2)
  78   (define-key wordstar-C-k-map "3" 'ws-set-marker-3)
  79   (define-key wordstar-C-k-map "4" 'ws-set-marker-4)
  80   (define-key wordstar-C-k-map "5" 'ws-set-marker-5)
  81   (define-key wordstar-C-k-map "6" 'ws-set-marker-6)
  82   (define-key wordstar-C-k-map "7" 'ws-set-marker-7)
  83   (define-key wordstar-C-k-map "8" 'ws-set-marker-8)
  84   (define-key wordstar-C-k-map "9" 'ws-set-marker-9)
  85   (define-key wordstar-C-k-map "b" 'ws-begin-block)
  86   (define-key wordstar-C-k-map "\C-b" 'ws-begin-block)
  87   (define-key wordstar-C-k-map "c" 'ws-copy-block)
  88   (define-key wordstar-C-k-map "\C-c" 'ws-copy-block)
  89   (define-key wordstar-C-k-map "d" 'save-buffers-kill-emacs)
  90   (define-key wordstar-C-k-map "\C-d" 'save-buffers-kill-emacs)
  91   (define-key wordstar-C-k-map "f" 'find-file)
  92   (define-key wordstar-C-k-map "\C-f" 'find-file)
  93   (define-key wordstar-C-k-map "h" 'ws-show-markers)
  94   (define-key wordstar-C-k-map "\C-h" 'ws-show-markers)
  95   (define-key wordstar-C-k-map "i" 'ws-indent-block)
  96   (define-key wordstar-C-k-map "\C-i" 'ws-indent-block)
  97   (define-key wordstar-C-k-map "k" 'ws-end-block)
  98   (define-key wordstar-C-k-map "\C-k" 'ws-end-block)
  99   (define-key wordstar-C-k-map "p" 'ws-print-block)
 100   (define-key wordstar-C-k-map "\C-p" 'ws-print-block)
 101   (define-key wordstar-C-k-map "q" 'kill-emacs)
 102   (define-key wordstar-C-k-map "\C-q" 'kill-emacs)
 103   (define-key wordstar-C-k-map "r" 'insert-file)
 104   (define-key wordstar-C-k-map "\C-r" 'insert-file)
 105   (define-key wordstar-C-k-map "s" 'save-some-buffers)
 106   (define-key wordstar-C-k-map "\C-s" 'save-some-buffers)
 107   (define-key wordstar-C-k-map "t" 'ws-mark-word)
 108   (define-key wordstar-C-k-map "\C-t" 'ws-mark-word)
 109   (define-key wordstar-C-k-map "u" 'ws-exdent-block)
 110   (define-key wordstar-C-k-map "\C-u" 'keyboard-quit)
 111   (define-key wordstar-C-k-map "v" 'ws-move-block)
 112   (define-key wordstar-C-k-map "\C-v" 'ws-move-block)
 113   (define-key wordstar-C-k-map "w" 'ws-write-block)
 114   (define-key wordstar-C-k-map "\C-w" 'ws-write-block)
 115   (define-key wordstar-C-k-map "x" 'save-buffers-kill-emacs)
 116   (define-key wordstar-C-k-map "\C-x" 'save-buffers-kill-emacs)
 117   (define-key wordstar-C-k-map "y" 'ws-delete-block)
 118   (define-key wordstar-C-k-map "\C-y" 'ws-delete-block)
 119
 120   ;; wordstar-C-j-map not yet implemented
 121
 122   ;; wordstar-C-o-map
 123
 124   (define-key wordstar-C-o-map " " ())
 125   (define-key wordstar-C-o-map "c" 'wordstar-center-line)
 126   (define-key wordstar-C-o-map "\C-c" 'wordstar-center-line)
 127   (define-key wordstar-C-o-map "b" 'switch-to-buffer)
 128   (define-key wordstar-C-o-map "\C-b" 'switch-to-buffer)
 129   (define-key wordstar-C-o-map "j" 'justify-current-line)
 130   (define-key wordstar-C-o-map "\C-j" 'justify-current-line)
 131   (define-key wordstar-C-o-map "k" 'kill-buffer)
 132   (define-key wordstar-C-o-map "\C-k" 'kill-buffer)
 133   (define-key wordstar-C-o-map "l" 'list-buffers)
 134   (define-key wordstar-C-o-map "\C-l" 'list-buffers)
 135   (define-key wordstar-C-o-map "m" 'auto-fill-mode)
 136   (define-key wordstar-C-o-map "\C-m" 'auto-fill-mode)
 137   (define-key wordstar-C-o-map "r" 'set-fill-column)
 138   (define-key wordstar-C-o-map "\C-r" 'set-fill-column)
 139   (define-key wordstar-C-o-map "\C-u" 'keyboard-quit)
 140   (define-key wordstar-C-o-map "wd" 'delete-other-windows)
 141   (define-key wordstar-C-o-map "wh" 'split-window-horizontally)
 142   (define-key wordstar-C-o-map "wo" 'other-window)
 143   (define-key wordstar-C-o-map "wv" 'split-window-vertically)
 144
 145   ;; wordstar-C-q-map
 146   (define-key wordstar-C-q-map " " ())
 147   (define-key wordstar-C-q-map "0" 'ws-find-marker-0)
 148   (define-key wordstar-C-q-map "1" 'ws-find-marker-1)
 149   (define-key wordstar-C-q-map "2" 'ws-find-marker-2)
 150   (define-key wordstar-C-q-map "3" 'ws-find-marker-3)
 151   (define-key wordstar-C-q-map "4" 'ws-find-marker-4)
 152   (define-key wordstar-C-q-map "5" 'ws-find-marker-5)
 153   (define-key wordstar-C-q-map "6" 'ws-find-marker-6)
 154   (define-key wordstar-C-q-map "7" 'ws-find-marker-7)
 155   (define-key wordstar-C-q-map "8" 'ws-find-marker-8)
 156   (define-key wordstar-C-q-map "9" 'ws-find-marker-9)
 157   (define-key wordstar-C-q-map "a" 'ws-query-replace)
 158   (define-key wordstar-C-q-map "\C-a" 'ws-query-replace)
 159   (define-key wordstar-C-q-map "b" 'ws-goto-block-begin)
 160   (define-key wordstar-C-q-map "\C-b" 'ws-goto-block-begin)
 161   (define-key wordstar-C-q-map "c" 'end-of-buffer)
 162   (define-key wordstar-C-q-map "\C-c" 'end-of-buffer)
 163   (define-key wordstar-C-q-map "d" 'end-of-line)
 164   (define-key wordstar-C-q-map "\C-d" 'end-of-line)
 165   (define-key wordstar-C-q-map "f" 'ws-search)
 166   (define-key wordstar-C-q-map "\C-f" 'ws-search)
 167   (define-key wordstar-C-q-map "k" 'ws-goto-block-end)
 168   (define-key wordstar-C-q-map "\C-k" 'ws-goto-block-end)
 169   (define-key wordstar-C-q-map "l" 'ws-undo)
 170   (define-key wordstar-C-q-map "\C-l" 'ws-undo)
 171   (define-key wordstar-C-q-map "p" 'ws-last-cursorp)
 172   (define-key wordstar-C-q-map "\C-p" 'ws-last-cursorp)
 173   (define-key wordstar-C-q-map "r" 'beginning-of-buffer)
 174   (define-key wordstar-C-q-map "\C-r" 'beginning-of-buffer)
 175   (define-key wordstar-C-q-map "s" 'beginning-of-line)
 176   (define-key wordstar-C-q-map "\C-s" 'beginning-of-line)
 177   (define-key wordstar-C-q-map "\C-u" 'keyboard-quit)
 178   (define-key wordstar-C-q-map "w" 'ws-last-error)
 179   (define-key wordstar-C-q-map "\C-w" 'ws-last-error)
 180   (define-key wordstar-C-q-map "y" 'ws-kill-eol)
 181   (define-key wordstar-C-q-map "\C-y" 'ws-kill-eol)
 182   (define-key wordstar-C-q-map "\177" 'ws-kill-bol))
 183
 184 (put 'wordstar-mode 'mode-class 'special)
 185
 186 ;;;###autoload
 187 (defun wordstar-mode ()
 188   "Major mode with WordStar-like key bindings.
 189
 190 BUGS:
 191  - Help menus with WordStar commands (C-j just calls help-for-help)
 192    are not implemented
 193  - Options for search and replace
 194  - Show markers (C-k h) is somewhat strange
 195  - Search and replace (C-q a) is only available in forward direction
 196
 197 No key bindings beginning with ESC are installed, they will work
 198 Emacs-like.
 199
 200 The key bindings are:
 201
 202   C-a           backward-word
 203   C-b           fill-paragraph
 204   C-c           scroll-up-line
 205   C-d           forward-char
 206   C-e           previous-line
 207   C-f           forward-word
 208   C-g           delete-char
 209   C-h           backward-char
 210   C-i           indent-for-tab-command
 211   C-j           help-for-help
 212   C-k           ordstar-C-k-map
 213   C-l           ws-repeat-search
 214   C-n           open-line
 215   C-p           quoted-insert
 216   C-r           scroll-down-line
 217   C-s           backward-char
 218   C-t           kill-word
 219   C-u           keyboard-quit
 220   C-v           overwrite-mode
 221   C-w           scroll-down
 222   C-x           next-line
 223   C-y           kill-complete-line
 224   C-z           scroll-up
 225
 226   C-k 0         ws-set-marker-0
 227   C-k 1         ws-set-marker-1
 228   C-k 2         ws-set-marker-2
 229   C-k 3         ws-set-marker-3
 230   C-k 4         ws-set-marker-4
 231   C-k 5         ws-set-marker-5
 232   C-k 6         ws-set-marker-6
 233   C-k 7         ws-set-marker-7
 234   C-k 8         ws-set-marker-8
 235   C-k 9         ws-set-marker-9
 236   C-k b         ws-begin-block
 237   C-k c         ws-copy-block
 238   C-k d         save-buffers-kill-emacs
 239   C-k f         find-file
 240   C-k h         ws-show-markers
 241   C-k i         ws-indent-block
 242   C-k k         ws-end-block
 243   C-k p         ws-print-block
 244   C-k q         kill-emacs
 245   C-k r         insert-file
 246   C-k s         save-some-buffers
 247   C-k t         ws-mark-word
 248   C-k u         ws-exdent-block
 249   C-k C-u       keyboard-quit
 250   C-k v         ws-move-block
 251   C-k w         ws-write-block
 252   C-k x         kill-emacs
 253   C-k y         ws-delete-block
 254
 255   C-o c         wordstar-center-line
 256   C-o b         switch-to-buffer
 257   C-o j         justify-current-line
 258   C-o k         kill-buffer
 259   C-o l         list-buffers
 260   C-o m         auto-fill-mode
 261   C-o r         set-fill-column
 262   C-o C-u       keyboard-quit
 263   C-o wd        delete-other-windows
 264   C-o wh        split-window-horizontally
 265   C-o wo        other-window
 266   C-o wv        split-window-vertically
 267
 268   C-q 0         ws-find-marker-0
 269   C-q 1         ws-find-marker-1
 270   C-q 2         ws-find-marker-2
 271   C-q 3         ws-find-marker-3
 272   C-q 4         ws-find-marker-4
 273   C-q 5         ws-find-marker-5
 274   C-q 6         ws-find-marker-6
 275   C-q 7         ws-find-marker-7
 276   C-q 8         ws-find-marker-8
 277   C-q 9         ws-find-marker-9
 278   C-q a         ws-query-replace
 279   C-q b         ws-to-block-begin
 280   C-q c         end-of-buffer
 281   C-q d         end-of-line
 282   C-q f         ws-search
 283   C-q k         ws-to-block-end
 284   C-q l         ws-undo
 285   C-q p         ws-last-cursorp
 286   C-q r         beginning-of-buffer
 287   C-q C-u       keyboard-quit
 288   C-q w         ws-last-error
 289   C-q y         ws-kill-eol
 290   C-q DEL       ws-kill-bol
 291 "
 292   (interactive)
 293   (kill-all-local-variables)
 294   (use-local-map wordstar-mode-map)
 295   (setq mode-name "WordStar")
 296   (setq major-mode 'wordstar-mode)
 297   (run-hooks 'wordstar-mode-hook))
 298
 299
 300 (defun wordstar-center-paragraph ()
 301   "Center each line in the paragraph at or after point.
 302 See `wordstar-center-line' for more info."
 303   (interactive)
 304   (save-excursion
 305     (forward-paragraph)
 306     (or (bolp) (newline 1))
 307     (let ((end (point)))
 308       (backward-paragraph)
 309       (wordstar-center-region (point) end))))
 310
 311 (defun wordstar-center-region (from to)
 312   "Center each line starting in the region.
 313 See `wordstar-center-line' for more info."
 314   (interactive "r")
 315   (if (> from to)
 316       (let ((tem to))
 317         (setq to from from tem)))
 318   (save-excursion
 319     (save-restriction
 320       (narrow-to-region from to)
 321       (goto-char from)
 322       (while (not (eobp))
 323         (wordstar-center-line)
 324         (forward-line 1)))))
 325
 326 (defun wordstar-center-line ()
 327   "Center the line point is on, within the width specified by `fill-column'.
 328 This means adjusting the indentation to match
 329 the distance between the end of the text and `fill-column'."
 330   (interactive)
 331   (save-excursion
 332     (let (line-length)
 333       (beginning-of-line)
 334       (delete-horizontal-space)
 335       (end-of-line)
 336       (delete-horizontal-space)
 337       (setq line-length (current-column))
 338       (beginning-of-line)
 339       (indent-to
 340        (+ left-margin
 341           (/ (- fill-column left-margin line-length) 2))))))
 342
 343 (defun scroll-down-line ()
 344   "Scroll one line down."
 345   (interactive)
 346   (scroll-down 1))
 347
 348 (defun scroll-up-line ()
 349   "Scroll one line up."
 350   (interactive)
 351   (scroll-up 1))
 352
 353 ;;;;;;;;;;;
 354 ;; wordstar special variables:
 355
 356 (defvar ws-marker-0 nil "Position marker 0 in WordStar mode.")
 357 (defvar ws-marker-1 nil "Position marker 1 in WordStar mode.")
 358 (defvar ws-marker-2 nil "Position marker 2 in WordStar mode.")
 359 (defvar ws-marker-3 nil "Position marker 3 in WordStar mode.")
 360 (defvar ws-marker-4 nil "Position marker 4 in WordStar mode.")
 361 (defvar ws-marker-5 nil "Position marker 5 in WordStar mode.")
 362 (defvar ws-marker-6 nil "Position marker 6 in WordStar mode.")
 363 (defvar ws-marker-7 nil "Position marker 7 in WordStar mode.")
 364 (defvar ws-marker-8 nil "Position marker 8 in WordStar mode.")
 365 (defvar ws-marker-9 nil "Position marker 9 in WordStar mode.")
 366
 367 (defvar ws-block-begin-marker nil "Beginning of \"Block\" in WordStar mode.")
 368 (defvar ws-block-end-marker nil "End of \"Block\" in WordStar mode.")
 369
 370 (defvar ws-search-string nil "String of last search in WordStar mode.")
 371 (defvar ws-search-direction t
 372   "Direction of last search in WordStar mode. T if forward, NIL if backward.")
 373
 374 (defvar ws-last-cursorposition nil
 375   "Position before last search etc. in WordStar mode.")
 376
 377 (defvar ws-last-errormessage nil
 378   "Last error message issued by a WordStar mode function.")
 379
 380 ;;;;;;;;;;;
 381 ;; wordstar special functions:
 382
 383 (defun ws-error (string)
 384   "Report error of a WordStar special function. Error message is saved
 385 in ws-last-errormessage for recovery with C-q w."
 386   (setq ws-last-errormessage string)
 387   (error string))
 388
 389 (defun ws-set-marker-0 ()
 390   "In WordStar mode: Set marker 0 to current cursor position."
 391   (interactive)
 392   (setq ws-marker-0 (point-marker))
 393   (message "Marker 0 set"))
 394
 395 (defun ws-set-marker-1 ()
 396   "In WordStar mode: Set marker 1 to current cursor position."
 397   (interactive)
 398   (setq ws-marker-1 (point-marker))
 399   (message "Marker 1 set"))
 400
 401 (defun ws-set-marker-2 ()
 402   "In WordStar mode: Set marker 2 to current cursor position."
 403   (interactive)
 404   (setq ws-marker-2 (point-marker))
 405   (message "Marker 2 set"))
 406
 407 (defun ws-set-marker-3 ()
 408   "In WordStar mode: Set marker 3 to current cursor position."
 409   (interactive)
 410   (setq ws-marker-3 (point-marker))
 411   (message "Marker 3 set"))
 412
 413 (defun ws-set-marker-4 ()
 414   "In WordStar mode: Set marker 4 to current cursor position."
 415   (interactive)
 416   (setq ws-marker-4 (point-marker))
 417   (message "Marker 4 set"))
 418
 419 (defun ws-set-marker-5 ()
 420   "In WordStar mode: Set marker 5 to current cursor position."
 421   (interactive)
 422   (setq ws-marker-5 (point-marker))
 423   (message "Marker 5 set"))
 424
 425 (defun ws-set-marker-6 ()
 426   "In WordStar mode: Set marker 6 to current cursor position."
 427   (interactive)
 428   (setq ws-marker-6 (point-marker))
 429   (message "Marker 6 set"))
 430
 431 (defun ws-set-marker-7 ()
 432   "In WordStar mode: Set marker 7 to current cursor position."
 433   (interactive)
 434   (setq ws-marker-7 (point-marker))
 435   (message "Marker 7 set"))
 436
 437 (defun ws-set-marker-8 ()
 438   "In WordStar mode: Set marker 8 to current cursor position."
 439   (interactive)
 440   (setq ws-marker-8 (point-marker))
 441   (message "Marker 8 set"))
 442
 443 (defun ws-set-marker-9 ()
 444   "In WordStar mode: Set marker 9 to current cursor position."
 445   (interactive)
 446   (setq ws-marker-9 (point-marker))
 447   (message "Marker 9 set"))
 448
 449 (defun ws-begin-block ()
 450   "In WordStar mode: Set block begin marker to current cursor position."
 451   (interactive)
 452   (setq ws-block-begin-marker (point-marker))
 453   (message "Block begin marker set"))
 454
 455 (defun ws-show-markers ()
 456   "In WordStar mode: Show block markers."
 457   (interactive)
 458   (if (or ws-block-begin-marker ws-block-end-marker)
 459       (save-excursion
 460         (if ws-block-begin-marker
 461             (let ()
 462               (goto-char ws-block-begin-marker)
 463               (message "Block begin marker")
 464               (sit-for 2))
 465           (message "Block begin marker not set")
 466           (sit-for 2))
 467         (if ws-block-end-marker
 468             (let ()
 469               (goto-char ws-block-end-marker)
 470               (message "Block end marker")
 471               (sit-for 2))
 472           (message "Block end marker not set"))
 473         (message ""))
 474     (message "Block markers not set")))
 475
 476
 477 (defun ws-indent-block ()
 478   "In WordStar mode: Indent block (not yet implemented)."
 479   (interactive)
 480   (ws-error "Indent block not yet implemented"))
 481
 482 (defun ws-end-block ()
 483   "In WordStar mode: Set block end marker to current cursor position."
 484   (interactive)
 485   (setq ws-block-end-marker (point-marker))
 486   (message "Block end marker set"))
 487
 488 (defun ws-print-block ()
 489   "In WordStar mode: Print block."
 490   (interactive)
 491   (message "Don't do this. Write block to a file (C-k w) and print this file."))
 492
 493 (defun ws-mark-word ()
 494   "In WordStar mode: Mark current word as block."
 495   (interactive)
 496   (save-excursion
 497     (forward-word 1)
 498     (sit-for 1)
 499     (ws-end-block)
 500     (forward-word -1)
 501     (sit-for 1)
 502     (ws-begin-block)))
 503
 504 (defun ws-exdent-block ()
 505   "I don't know what this (C-k u) should do."
 506   (interactive)
 507   (ws-error "This won't be done -- not yet implemented."))
 508
 509 (defun ws-move-block ()
 510   "In WordStar mode: Move block to current cursor position."
 511   (interactive)
 512   (if (and ws-block-begin-marker ws-block-end-marker)
 513       (let ()
 514         (kill-region ws-block-begin-marker ws-block-end-marker)
 515         (yank)
 516         (save-excursion
 517           (goto-char (region-beginning))
 518           (setq ws-block-begin-marker (point-marker))
 519           (goto-char (region-end))
 520           (setq ws-block-end-marker (point-marker))))
 521     (ws-error (cond (ws-block-begin-marker "Block end marker not set")
 522                     (ws-block-end-marker "Block begin marker not set")
 523                     (t "Block markers not set")))))
 524
 525 (defun ws-write-block ()
 526   "In WordStar mode: Write block to file."
 527   (interactive)
 528   (if (and ws-block-begin-marker ws-block-end-marker)
 529       (let ((filename (read-file-name "Write block to file: ")))
 530         (write-region ws-block-begin-marker ws-block-end-marker filename))
 531     (ws-error (cond (ws-block-begin-marker "Block end marker not set")
 532                     (ws-block-end-marker "Block begin marker not set")
 533                     (t "Block markers not set")))))
 534
 535
 536 (defun ws-delete-block ()
 537   "In WordStar mode: Delete block."
 538   (interactive)
 539   (if (and ws-block-begin-marker ws-block-end-marker)
 540       (let ()
 541         (kill-region ws-block-begin-marker ws-block-end-marker)
 542         (setq ws-block-end-marker nil)
 543         (setq ws-block-begin-marker nil))
 544     (ws-error (cond (ws-block-begin-marker "Block end marker not set")
 545                     (ws-block-end-marker "Block begin marker not set")
 546                     (t "Block markers not set")))))
 547
 548 (defun ws-find-marker-0 ()
 549   "In WordStar mode: Go to marker 0."
 550   (interactive)
 551   (if ws-marker-0
 552       (let ()
 553         (setq ws-last-cursorposition (point-marker))
 554         (goto-char ws-marker-0))
 555     (ws-error "Marker 0 not set")))
 556
 557 (defun ws-find-marker-1 ()
 558   "In WordStar mode: Go to marker 1."
 559   (interactive)
 560   (if ws-marker-1
 561       (let ()
 562         (setq ws-last-cursorposition (point-marker))
 563         (goto-char ws-marker-1))
 564     (ws-error "Marker 1 not set")))
 565
 566 (defun ws-find-marker-2 ()
 567   "In WordStar mode: Go to marker 2."
 568   (interactive)
 569   (if ws-marker-2
 570       (let ()
 571         (setq ws-last-cursorposition (point-marker))
 572         (goto-char ws-marker-2))
 573     (ws-error "Marker 2 not set")))
 574
 575 (defun ws-find-marker-3 ()
 576   "In WordStar mode: Go to marker 3."
 577   (interactive)
 578   (if ws-marker-3
 579       (let ()
 580         (setq ws-last-cursorposition (point-marker))
 581         (goto-char ws-marker-3))
 582     (ws-error "Marker 3 not set")))
 583
 584 (defun ws-find-marker-4 ()
 585   "In WordStar mode: Go to marker 4."
 586   (interactive)
 587   (if ws-marker-4
 588       (let ()
 589         (setq ws-last-cursorposition (point-marker))
 590         (goto-char ws-marker-4))
 591     (ws-error "Marker 4 not set")))
 592
 593 (defun ws-find-marker-5 ()
 594   "In WordStar mode: Go to marker 5."
 595   (interactive)
 596   (if ws-marker-5
 597       (let ()
 598         (setq ws-last-cursorposition (point-marker))
 599         (goto-char ws-marker-5))
 600     (ws-error "Marker 5 not set")))
 601
 602 (defun ws-find-marker-6 ()
 603   "In WordStar mode: Go to marker 6."
 604   (interactive)
 605   (if ws-marker-6
 606       (let ()
 607         (setq ws-last-cursorposition (point-marker))
 608         (goto-char ws-marker-6))
 609     (ws-error "Marker 6 not set")))
 610
 611 (defun ws-find-marker-7 ()
 612   "In WordStar mode: Go to marker 7."
 613   (interactive)
 614   (if ws-marker-7
 615       (let ()
 616         (setq ws-last-cursorposition (point-marker))
 617         (goto-char ws-marker-7))
 618     (ws-error "Marker 7 not set")))
 619
 620 (defun ws-find-marker-8 ()
 621   "In WordStar mode: Go to marker 8."
 622   (interactive)
 623   (if ws-marker-8
 624       (let ()
 625         (setq ws-last-cursorposition (point-marker))
 626         (goto-char ws-marker-8))
 627     (ws-error "Marker 8 not set")))
 628
 629 (defun ws-find-marker-9 ()
 630   "In WordStar mode: Go to marker 9."
 631   (interactive)
 632   (if ws-marker-9
 633       (let ()
 634         (setq ws-last-cursorposition (point-marker))
 635         (goto-char ws-marker-9))
 636     (ws-error "Marker 9 not set")))
 637
 638 (defun ws-goto-block-begin ()
 639   "In WordStar mode: Go to block begin marker."
 640   (interactive)
 641   (if ws-block-begin-marker
 642       (let ()
 643         (setq ws-last-cursorposition (point-marker))
 644         (goto-char ws-block-begin-marker))
 645     (ws-error "Block begin marker not set")))
 646
 647 (defun ws-search (string)
 648   "In WordStar mode: Search string, remember string for repetition."
 649   (interactive "sSearch for: ")
 650   (message "Forward (f) or backward (b)")
 651   (let ((direction
 652          (read-char)))
 653     (cond ((equal (upcase direction) ?F)
 654            (setq ws-search-string string)
 655            (setq ws-search-direction t)
 656            (setq ws-last-cursorposition (point-marker))
 657            (search-forward string))
 658           ((equal (upcase direction) ?B)
 659            (setq ws-search-string string)
 660            (setq ws-search-direction nil)
 661            (setq ws-last-cursorposition (point-marker))
 662            (search-backward string))
 663           (t (keyboard-quit)))))
 664
 665 (defun ws-goto-block-end ()
 666   "In WordStar mode: Go to block end marker."
 667   (interactive)
 668   (if ws-block-end-marker
 669       (let ()
 670         (setq ws-last-cursorposition (point-marker))
 671         (goto-char ws-block-end-marker))
 672     (ws-error "Block end marker not set")))
 673
 674 (defun ws-undo ()
 675   "In WordStar mode: Undo and give message about undoing more changes."
 676   (interactive)
 677   (undo)
 678   (message "Repeat C-q l to undo more changes."))
 679
 680 (defun ws-goto-last-cursorposition ()
 681   "In WordStar mode: "
 682   (interactive)
 683   (if ws-last-cursorposition
 684       (let ()
 685         (setq ws-last-cursorposition (point-marker))
 686         (goto-char ws-last-cursorposition))
 687     (ws-error "No last cursor position available.")))
 688
 689 (defun ws-last-error ()
 690   "In WordStar mode: repeat last error message.
 691 This will only work for errors raised by WordStar mode functions."
 692   (interactive)
 693   (if ws-last-errormessage
 694       (message ws-last-errormessage)
 695     (message "No WordStar error yet.")))
 696
 697 (defun ws-kill-eol ()
 698   "In WordStar mode: Kill to end of line (like WordStar, not like Emacs)."
 699   (interactive)
 700   (let ((p (point)))
 701     (end-of-line)
 702     (kill-region p (point))))
 703
 704 (defun ws-kill-bol ()
 705   "In WordStar mode: Kill to beginning of line
 706 \(like WordStar, not like Emacs)."
 707   (interactive)
 708   (let ((p (point)))
 709     (beginning-of-line)
 710     (kill-region (point) p)))
 711
 712 (defun kill-complete-line ()
 713   "Kill the complete line."
 714   (interactive)
 715   (beginning-of-line)
 716   (if (eobp) (error "End of buffer"))
 717   (let ((beg (point)))
 718     (forward-line 1)
 719     (kill-region beg (point))))
 720
 721 (defun ws-repeat-search ()
 722   "In WordStar mode: Repeat last search."
 723   (interactive)
 724   (setq ws-last-cursorposition (point-marker))
 725   (if ws-search-string
 726       (if ws-search-direction
 727           (search-forward ws-search-string)
 728         (search-backward ws-search-string))
 729     (ws-error "No search to repeat")))
 730
 731 (defun ws-query-replace (from to)
 732   "In WordStar mode: Search string, remember string for repetition."
 733   (interactive "sReplace:
 734 sWith: " )
 735   (setq ws-search-string from)
 736   (setq ws-search-direction t)
 737   (setq ws-last-cursorposition (point-marker))
 738   (query-replace from to))
 739
 740 (defun ws-copy-block ()
 741   "In WordStar mode: Copy block to current cursor position."
 742   (interactive)
 743   (if (and ws-block-begin-marker ws-block-end-marker)
 744       (let ()
 745         (copy-region-as-kill ws-block-begin-marker ws-block-end-marker)
 746         (yank)
 747         (save-excursion
 748           (goto-char (region-beginning))
 749           (setq ws-block-begin-marker (point-marker))
 750           (goto-char (region-end))
 751           (setq ws-block-end-marker (point-marker))))
 752     (ws-error (cond (ws-block-begin-marker "Block end marker not set")
 753                     (ws-block-end-marker "Block begin marker not set")
 754                     (t "Block markers not set")))))
 755
 756 (provide 'ws-mode)
 757
 758 ;;; ws-mode.el ends here