lisp/emulation/ws-mode.el

   1 ;;; ws-mode.el --- WordStar emulation mode for GNU Emacs
   2
   3 ;; Copyright (C) 1991, 2001-2013 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 3 of the License, or
  14 ;; (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26 ;; This emulates WordStar, with a major mode.
  27
  28 ;;; Code:
  29 (defvar wordstar-C-k-map
  30   (let ((map (make-keymap)))
  31     (define-key map " " ())
  32     (define-key map "0" 'ws-set-marker-0)
  33     (define-key map "1" 'ws-set-marker-1)
  34     (define-key map "2" 'ws-set-marker-2)
  35     (define-key map "3" 'ws-set-marker-3)
  36     (define-key map "4" 'ws-set-marker-4)
  37     (define-key map "5" 'ws-set-marker-5)
  38     (define-key map "6" 'ws-set-marker-6)
  39     (define-key map "7" 'ws-set-marker-7)
  40     (define-key map "8" 'ws-set-marker-8)
  41     (define-key map "9" 'ws-set-marker-9)
  42     (define-key map "b" 'ws-begin-block)
  43     (define-key map "\C-b" 'ws-begin-block)
  44     (define-key map "c" 'ws-copy-block)
  45     (define-key map "\C-c" 'ws-copy-block)
  46     (define-key map "d" 'save-buffers-kill-emacs)
  47     (define-key map "\C-d" 'save-buffers-kill-emacs)
  48     (define-key map "f" 'find-file)
  49     (define-key map "\C-f" 'find-file)
  50     (define-key map "h" 'ws-show-markers)
  51     (define-key map "\C-h" 'ws-show-markers)
  52     (define-key map "i" 'ws-indent-block)
  53     (define-key map "\C-i" 'ws-indent-block)
  54     (define-key map "k" 'ws-end-block)
  55     (define-key map "\C-k" 'ws-end-block)
  56     (define-key map "p" 'ws-print-block)
  57     (define-key map "\C-p" 'ws-print-block)
  58     (define-key map "q" 'kill-emacs)
  59     (define-key map "\C-q" 'kill-emacs)
  60     (define-key map "r" 'insert-file)
  61     (define-key map "\C-r" 'insert-file)
  62     (define-key map "s" 'save-some-buffers)
  63     (define-key map "\C-s" 'save-some-buffers)
  64     (define-key map "t" 'ws-mark-word)
  65     (define-key map "\C-t" 'ws-mark-word)
  66     (define-key map "u" 'ws-exdent-block)
  67     (define-key map "\C-u" 'keyboard-quit)
  68     (define-key map "v" 'ws-move-block)
  69     (define-key map "\C-v" 'ws-move-block)
  70     (define-key map "w" 'ws-write-block)
  71     (define-key map "\C-w" 'ws-write-block)
  72     (define-key map "x" 'save-buffers-kill-emacs)
  73     (define-key map "\C-x" 'save-buffers-kill-emacs)
  74     (define-key map "y" 'ws-delete-block)
  75     (define-key map "\C-y" 'ws-delete-block)
  76     map)
  77   "")
  78
  79 (defvar wordstar-C-o-map
  80   (let ((map (make-keymap)))
  81     (define-key map " " ())
  82     (define-key map "c" 'wordstar-center-line)
  83     (define-key map "\C-c" 'wordstar-center-line)
  84     (define-key map "b" 'switch-to-buffer)
  85     (define-key map "\C-b" 'switch-to-buffer)
  86     (define-key map "j" 'justify-current-line)
  87     (define-key map "\C-j" 'justify-current-line)
  88     (define-key map "k" 'kill-buffer)
  89     (define-key map "\C-k" 'kill-buffer)
  90     (define-key map "l" 'list-buffers)
  91     (define-key map "\C-l" 'list-buffers)
  92     (define-key map "m" 'auto-fill-mode)
  93     (define-key map "\C-m" 'auto-fill-mode)
  94     (define-key map "r" 'set-fill-column)
  95     (define-key map "\C-r" 'set-fill-column)
  96     (define-key map "\C-u" 'keyboard-quit)
  97     (define-key map "wd" 'delete-other-windows)
  98     (define-key map "wh" 'split-window-right)
  99     (define-key map "wo" 'other-window)
 100     (define-key map "wv" 'split-window-below)
 101     map)
 102   "")
 103
 104 (defvar wordstar-C-q-map
 105   (let ((map (make-keymap)))
 106     (define-key map " " ())
 107     (define-key map "0" 'ws-find-marker-0)
 108     (define-key map "1" 'ws-find-marker-1)
 109     (define-key map "2" 'ws-find-marker-2)
 110     (define-key map "3" 'ws-find-marker-3)
 111     (define-key map "4" 'ws-find-marker-4)
 112     (define-key map "5" 'ws-find-marker-5)
 113     (define-key map "6" 'ws-find-marker-6)
 114     (define-key map "7" 'ws-find-marker-7)
 115     (define-key map "8" 'ws-find-marker-8)
 116     (define-key map "9" 'ws-find-marker-9)
 117     (define-key map "a" 'ws-query-replace)
 118     (define-key map "\C-a" 'ws-query-replace)
 119     (define-key map "b" 'ws-goto-block-begin)
 120     (define-key map "\C-b" 'ws-goto-block-begin)
 121     (define-key map "c" 'end-of-buffer)
 122     (define-key map "\C-c" 'end-of-buffer)
 123     (define-key map "d" 'end-of-line)
 124     (define-key map "\C-d" 'end-of-line)
 125     (define-key map "f" 'ws-search)
 126     (define-key map "\C-f" 'ws-search)
 127     (define-key map "k" 'ws-goto-block-end)
 128     (define-key map "\C-k" 'ws-goto-block-end)
 129     (define-key map "l" 'ws-undo)
 130     (define-key map "\C-l" 'ws-undo)
 131     (define-key map "p" 'ws-last-cursorp)
 132     (define-key map "\C-p" 'ws-last-cursorp)
 133     (define-key map "r" 'beginning-of-buffer)
 134     (define-key map "\C-r" 'beginning-of-buffer)
 135     (define-key map "s" 'beginning-of-line)
 136     (define-key map "\C-s" 'beginning-of-line)
 137     (define-key map "\C-u" 'keyboard-quit)
 138     (define-key map "w" 'ws-last-error)
 139     (define-key map "\C-w" 'ws-last-error)
 140     (define-key map "y" 'ws-kill-eol)
 141     (define-key map "\C-y" 'ws-kill-eol)
 142     (define-key map "\177" 'ws-kill-bol)
 143     map)
 144   "")
 145
 146 (defvar wordstar-mode-map
 147   (let ((map (make-keymap)))
 148     (define-key map "\C-a" 'backward-word)
 149     (define-key map "\C-b" 'fill-paragraph)
 150     (define-key map "\C-c" 'scroll-up-command)
 151     (define-key map "\C-d" 'forward-char)
 152     (define-key map "\C-e" 'previous-line)
 153     (define-key map "\C-f" 'forward-word)
 154     (define-key map "\C-g" 'delete-char)
 155     (define-key map "\C-h" 'backward-char)
 156     (define-key map "\C-i" 'indent-for-tab-command)
 157     (define-key map "\C-j" 'help-for-help)
 158     (define-key map "\C-k" wordstar-C-k-map)
 159     (define-key map "\C-l" 'ws-repeat-search)
 160     (define-key map "\C-n" 'open-line)
 161     (define-key map "\C-o" wordstar-C-o-map)
 162     (define-key map "\C-p" 'quoted-insert)
 163     (define-key map "\C-q" wordstar-C-q-map)
 164     (define-key map "\C-r" 'scroll-down-command)
 165     (define-key map "\C-s" 'backward-char)
 166     (define-key map "\C-t" 'kill-word)
 167     (define-key map "\C-u" 'keyboard-quit)
 168     (define-key map "\C-v" 'overwrite-mode)
 169     (define-key map "\C-w" 'scroll-down-line)
 170     (define-key map "\C-x" 'next-line)
 171     (define-key map "\C-y" 'kill-complete-line)
 172     (define-key map "\C-z" 'scroll-up-line)
 173     map)
 174   "")
 175
 176 ;; wordstar-C-j-map not yet implemented
 177 (defvar wordstar-C-j-map nil "")
 178
 179
 180 (put 'wordstar-mode 'mode-class 'special)
 181
 182 ;;;###autoload
 183 (defun wordstar-mode ()
 184   "Major mode with WordStar-like key bindings.
 185
 186 BUGS:
 187  - Help menus with WordStar commands (C-j just calls help-for-help)
 188    are not implemented
 189  - Options for search and replace
 190  - Show markers (C-k h) is somewhat strange
 191  - Search and replace (C-q a) is only available in forward direction
 192
 193 No key bindings beginning with ESC are installed, they will work
 194 Emacs-like.
 195
 196 The key bindings are:
 197
 198   C-a           backward-word
 199   C-b           fill-paragraph
 200   C-c           scroll-up-line
 201   C-d           forward-char
 202   C-e           previous-line
 203   C-f           forward-word
 204   C-g           delete-char
 205   C-h           backward-char
 206   C-i           indent-for-tab-command
 207   C-j           help-for-help
 208   C-k           ordstar-C-k-map
 209   C-l           ws-repeat-search
 210   C-n           open-line
 211   C-p           quoted-insert
 212   C-r           scroll-down-line
 213   C-s           backward-char
 214   C-t           kill-word
 215   C-u           keyboard-quit
 216   C-v           overwrite-mode
 217   C-w           scroll-down
 218   C-x           next-line
 219   C-y           kill-complete-line
 220   C-z           scroll-up
 221
 222   C-k 0         ws-set-marker-0
 223   C-k 1         ws-set-marker-1
 224   C-k 2         ws-set-marker-2
 225   C-k 3         ws-set-marker-3
 226   C-k 4         ws-set-marker-4
 227   C-k 5         ws-set-marker-5
 228   C-k 6         ws-set-marker-6
 229   C-k 7         ws-set-marker-7
 230   C-k 8         ws-set-marker-8
 231   C-k 9         ws-set-marker-9
 232   C-k b         ws-begin-block
 233   C-k c         ws-copy-block
 234   C-k d         save-buffers-kill-emacs
 235   C-k f         find-file
 236   C-k h         ws-show-markers
 237   C-k i         ws-indent-block
 238   C-k k         ws-end-block
 239   C-k p         ws-print-block
 240   C-k q         kill-emacs
 241   C-k r         insert-file
 242   C-k s         save-some-buffers
 243   C-k t         ws-mark-word
 244   C-k u         ws-exdent-block
 245   C-k C-u       keyboard-quit
 246   C-k v         ws-move-block
 247   C-k w         ws-write-block
 248   C-k x         kill-emacs
 249   C-k y         ws-delete-block
 250
 251   C-o c         wordstar-center-line
 252   C-o b         switch-to-buffer
 253   C-o j         justify-current-line
 254   C-o k         kill-buffer
 255   C-o l         list-buffers
 256   C-o m         auto-fill-mode
 257   C-o r         set-fill-column
 258   C-o C-u       keyboard-quit
 259   C-o wd        delete-other-windows
 260   C-o wh        split-window-right
 261   C-o wo        other-window
 262   C-o wv        split-window-below
 263
 264   C-q 0         ws-find-marker-0
 265   C-q 1         ws-find-marker-1
 266   C-q 2         ws-find-marker-2
 267   C-q 3         ws-find-marker-3
 268   C-q 4         ws-find-marker-4
 269   C-q 5         ws-find-marker-5
 270   C-q 6         ws-find-marker-6
 271   C-q 7         ws-find-marker-7
 272   C-q 8         ws-find-marker-8
 273   C-q 9         ws-find-marker-9
 274   C-q a         ws-query-replace
 275   C-q b         ws-to-block-begin
 276   C-q c         end-of-buffer
 277   C-q d         end-of-line
 278   C-q f         ws-search
 279   C-q k         ws-to-block-end
 280   C-q l         ws-undo
 281   C-q p         ws-last-cursorp
 282   C-q r         beginning-of-buffer
 283   C-q C-u       keyboard-quit
 284   C-q w         ws-last-error
 285   C-q y         ws-kill-eol
 286   C-q DEL       ws-kill-bol
 287 "
 288   (interactive)
 289   (kill-all-local-variables)
 290   (use-local-map wordstar-mode-map)
 291   (setq mode-name "WordStar")
 292   (setq major-mode 'wordstar-mode)
 293   (run-mode-hooks 'wordstar-mode-hook))
 294
 295
 296 (defun wordstar-center-paragraph ()
 297   "Center each line in the paragraph at or after point.
 298 See `wordstar-center-line' for more info."
 299   (interactive)
 300   (save-excursion
 301     (forward-paragraph)
 302     (or (bolp) (newline 1))
 303     (let ((end (point)))
 304       (backward-paragraph)
 305       (wordstar-center-region (point) end))))
 306
 307 (defun wordstar-center-region (from to)
 308   "Center each line starting in the region.
 309 See `wordstar-center-line' for more info."
 310   (interactive "r")
 311   (if (> from to)
 312       (let ((tem to))
 313         (setq to from from tem)))
 314   (save-excursion
 315     (save-restriction
 316       (narrow-to-region from to)
 317       (goto-char from)
 318       (while (not (eobp))
 319         (wordstar-center-line)
 320         (forward-line 1)))))
 321
 322 (defun wordstar-center-line ()
 323   "Center the line point is on, within the width specified by `fill-column'.
 324 This means adjusting the indentation to match
 325 the distance between the end of the text and `fill-column'."
 326   (interactive)
 327   (save-excursion
 328     (let (line-length)
 329       (beginning-of-line)
 330       (delete-horizontal-space)
 331       (end-of-line)
 332       (delete-horizontal-space)
 333       (setq line-length (current-column))
 334       (beginning-of-line)
 335       (indent-to
 336        (+ left-margin
 337           (/ (- fill-column left-margin line-length) 2))))))
 338
 339 ;;;;;;;;;;;
 340 ;; wordstar special variables:
 341
 342 (defvar ws-marker-0 nil "Position marker 0 in WordStar mode.")
 343 (defvar ws-marker-1 nil "Position marker 1 in WordStar mode.")
 344 (defvar ws-marker-2 nil "Position marker 2 in WordStar mode.")
 345 (defvar ws-marker-3 nil "Position marker 3 in WordStar mode.")
 346 (defvar ws-marker-4 nil "Position marker 4 in WordStar mode.")
 347 (defvar ws-marker-5 nil "Position marker 5 in WordStar mode.")
 348 (defvar ws-marker-6 nil "Position marker 6 in WordStar mode.")
 349 (defvar ws-marker-7 nil "Position marker 7 in WordStar mode.")
 350 (defvar ws-marker-8 nil "Position marker 8 in WordStar mode.")
 351 (defvar ws-marker-9 nil "Position marker 9 in WordStar mode.")
 352
 353 (defvar ws-block-begin-marker nil "Beginning of \"Block\" in WordStar mode.")
 354 (defvar ws-block-end-marker nil "End of \"Block\" in WordStar mode.")
 355
 356 (defvar ws-search-string nil "String of last search in WordStar mode.")
 357 (defvar ws-search-direction t
 358   "Direction of last search in WordStar mode. t if forward, nil if backward.")
 359
 360 (defvar ws-last-cursorposition nil
 361   "Position before last search etc. in WordStar mode.")
 362
 363 (defvar ws-last-errormessage nil
 364   "Last error message issued by a WordStar mode function.")
 365
 366 ;;;;;;;;;;;
 367 ;; wordstar special functions:
 368
 369 (defun ws-error (string)
 370   "Report error of a WordStar special function. Error message is saved
 371 in ws-last-errormessage for recovery with C-q w."
 372   (setq ws-last-errormessage string)
 373   (error string))
 374
 375 (defun ws-set-marker-0 ()
 376   "In WordStar mode: Set marker 0 to current cursor position."
 377   (interactive)
 378   (setq ws-marker-0 (point-marker))
 379   (message "Marker 0 set"))
 380
 381 (defun ws-set-marker-1 ()
 382   "In WordStar mode: Set marker 1 to current cursor position."
 383   (interactive)
 384   (setq ws-marker-1 (point-marker))
 385   (message "Marker 1 set"))
 386
 387 (defun ws-set-marker-2 ()
 388   "In WordStar mode: Set marker 2 to current cursor position."
 389   (interactive)
 390   (setq ws-marker-2 (point-marker))
 391   (message "Marker 2 set"))
 392
 393 (defun ws-set-marker-3 ()
 394   "In WordStar mode: Set marker 3 to current cursor position."
 395   (interactive)
 396   (setq ws-marker-3 (point-marker))
 397   (message "Marker 3 set"))
 398
 399 (defun ws-set-marker-4 ()
 400   "In WordStar mode: Set marker 4 to current cursor position."
 401   (interactive)
 402   (setq ws-marker-4 (point-marker))
 403   (message "Marker 4 set"))
 404
 405 (defun ws-set-marker-5 ()
 406   "In WordStar mode: Set marker 5 to current cursor position."
 407   (interactive)
 408   (setq ws-marker-5 (point-marker))
 409   (message "Marker 5 set"))
 410
 411 (defun ws-set-marker-6 ()
 412   "In WordStar mode: Set marker 6 to current cursor position."
 413   (interactive)
 414   (setq ws-marker-6 (point-marker))
 415   (message "Marker 6 set"))
 416
 417 (defun ws-set-marker-7 ()
 418   "In WordStar mode: Set marker 7 to current cursor position."
 419   (interactive)
 420   (setq ws-marker-7 (point-marker))
 421   (message "Marker 7 set"))
 422
 423 (defun ws-set-marker-8 ()
 424   "In WordStar mode: Set marker 8 to current cursor position."
 425   (interactive)
 426   (setq ws-marker-8 (point-marker))
 427   (message "Marker 8 set"))
 428
 429 (defun ws-set-marker-9 ()
 430   "In WordStar mode: Set marker 9 to current cursor position."
 431   (interactive)
 432   (setq ws-marker-9 (point-marker))
 433   (message "Marker 9 set"))
 434
 435 (defun ws-begin-block ()
 436   "In WordStar mode: Set block begin marker to current cursor position."
 437   (interactive)
 438   (setq ws-block-begin-marker (point-marker))
 439   (message "Block begin marker set"))
 440
 441 (defun ws-show-markers ()
 442   "In WordStar mode: Show block markers."
 443   (interactive)
 444   (if (or ws-block-begin-marker ws-block-end-marker)
 445       (save-excursion
 446         (if ws-block-begin-marker
 447             (progn
 448               (goto-char ws-block-begin-marker)
 449               (message "Block begin marker")
 450               (sit-for 2))
 451           (message "Block begin marker not set")
 452           (sit-for 2))
 453         (if ws-block-end-marker
 454             (progn
 455               (goto-char ws-block-end-marker)
 456               (message "Block end marker")
 457               (sit-for 2))
 458           (message "Block end marker not set"))
 459         (message ""))
 460     (message "Block markers not set")))
 461
 462
 463 (defun ws-indent-block ()
 464   "In WordStar mode: Indent block (not yet implemented)."
 465   (interactive)
 466   (ws-error "Indent block not yet implemented"))
 467
 468 (defun ws-end-block ()
 469   "In WordStar mode: Set block end marker to current cursor position."
 470   (interactive)
 471   (setq ws-block-end-marker (point-marker))
 472   (message "Block end marker set"))
 473
 474 (defun ws-print-block ()
 475   "In WordStar mode: Print block."
 476   (interactive)
 477   (message "Don't do this. Write block to a file (C-k w) and print this file."))
 478
 479 (defun ws-mark-word ()
 480   "In WordStar mode: Mark current word as block."
 481   (interactive)
 482   (save-excursion
 483     (forward-word 1)
 484     (sit-for 1)
 485     (ws-end-block)
 486     (forward-word -1)
 487     (sit-for 1)
 488     (ws-begin-block)))
 489
 490 (defun ws-exdent-block ()
 491   "I don't know what this (C-k u) should do."
 492   (interactive)
 493   (ws-error "This won't be done -- not yet implemented."))
 494
 495 (defun ws-move-block ()
 496   "In WordStar mode: Move block to current cursor position."
 497   (interactive)
 498   (if (and ws-block-begin-marker ws-block-end-marker)
 499       (progn
 500         (kill-region ws-block-begin-marker ws-block-end-marker)
 501         (yank)
 502         (save-excursion
 503           (goto-char (region-beginning))
 504           (setq ws-block-begin-marker (point-marker))
 505           (goto-char (region-end))
 506           (setq ws-block-end-marker (point-marker))))
 507     (ws-error (cond (ws-block-begin-marker "Block end marker not set")
 508                     (ws-block-end-marker "Block begin marker not set")
 509                     (t "Block markers not set")))))
 510
 511 (defun ws-write-block ()
 512   "In WordStar mode: Write block to file."
 513   (interactive)
 514   (if (and ws-block-begin-marker ws-block-end-marker)
 515       (let ((filename (read-file-name "Write block to file: ")))
 516         (write-region ws-block-begin-marker ws-block-end-marker filename))
 517     (ws-error (cond (ws-block-begin-marker "Block end marker not set")
 518                     (ws-block-end-marker "Block begin marker not set")
 519                     (t "Block markers not set")))))
 520
 521
 522 (defun ws-delete-block ()
 523   "In WordStar mode: Delete block."
 524   (interactive)
 525   (if (and ws-block-begin-marker ws-block-end-marker)
 526       (progn
 527         (kill-region ws-block-begin-marker ws-block-end-marker)
 528         (setq ws-block-end-marker nil)
 529         (setq ws-block-begin-marker nil))
 530     (ws-error (cond (ws-block-begin-marker "Block end marker not set")
 531                     (ws-block-end-marker "Block begin marker not set")
 532                     (t "Block markers not set")))))
 533
 534 (defun ws-find-marker-0 ()
 535   "In WordStar mode: Go to marker 0."
 536   (interactive)
 537   (if ws-marker-0
 538       (progn
 539         (setq ws-last-cursorposition (point-marker))
 540         (goto-char ws-marker-0))
 541     (ws-error "Marker 0 not set")))
 542
 543 (defun ws-find-marker-1 ()
 544   "In WordStar mode: Go to marker 1."
 545   (interactive)
 546   (if ws-marker-1
 547       (progn
 548         (setq ws-last-cursorposition (point-marker))
 549         (goto-char ws-marker-1))
 550     (ws-error "Marker 1 not set")))
 551
 552 (defun ws-find-marker-2 ()
 553   "In WordStar mode: Go to marker 2."
 554   (interactive)
 555   (if ws-marker-2
 556       (progn
 557         (setq ws-last-cursorposition (point-marker))
 558         (goto-char ws-marker-2))
 559     (ws-error "Marker 2 not set")))
 560
 561 (defun ws-find-marker-3 ()
 562   "In WordStar mode: Go to marker 3."
 563   (interactive)
 564   (if ws-marker-3
 565       (progn
 566         (setq ws-last-cursorposition (point-marker))
 567         (goto-char ws-marker-3))
 568     (ws-error "Marker 3 not set")))
 569
 570 (defun ws-find-marker-4 ()
 571   "In WordStar mode: Go to marker 4."
 572   (interactive)
 573   (if ws-marker-4
 574       (progn
 575         (setq ws-last-cursorposition (point-marker))
 576         (goto-char ws-marker-4))
 577     (ws-error "Marker 4 not set")))
 578
 579 (defun ws-find-marker-5 ()
 580   "In WordStar mode: Go to marker 5."
 581   (interactive)
 582   (if ws-marker-5
 583       (progn
 584         (setq ws-last-cursorposition (point-marker))
 585         (goto-char ws-marker-5))
 586     (ws-error "Marker 5 not set")))
 587
 588 (defun ws-find-marker-6 ()
 589   "In WordStar mode: Go to marker 6."
 590   (interactive)
 591   (if ws-marker-6
 592       (progn
 593         (setq ws-last-cursorposition (point-marker))
 594         (goto-char ws-marker-6))
 595     (ws-error "Marker 6 not set")))
 596
 597 (defun ws-find-marker-7 ()
 598   "In WordStar mode: Go to marker 7."
 599   (interactive)
 600   (if ws-marker-7
 601       (progn
 602         (setq ws-last-cursorposition (point-marker))
 603         (goto-char ws-marker-7))
 604     (ws-error "Marker 7 not set")))
 605
 606 (defun ws-find-marker-8 ()
 607   "In WordStar mode: Go to marker 8."
 608   (interactive)
 609   (if ws-marker-8
 610       (progn
 611         (setq ws-last-cursorposition (point-marker))
 612         (goto-char ws-marker-8))
 613     (ws-error "Marker 8 not set")))
 614
 615 (defun ws-find-marker-9 ()
 616   "In WordStar mode: Go to marker 9."
 617   (interactive)
 618   (if ws-marker-9
 619       (progn
 620         (setq ws-last-cursorposition (point-marker))
 621         (goto-char ws-marker-9))
 622     (ws-error "Marker 9 not set")))
 623
 624 (defun ws-goto-block-begin ()
 625   "In WordStar mode: Go to block begin marker."
 626   (interactive)
 627   (if ws-block-begin-marker
 628       (progn
 629         (setq ws-last-cursorposition (point-marker))
 630         (goto-char ws-block-begin-marker))
 631     (ws-error "Block begin marker not set")))
 632
 633 (defun ws-search (string)
 634   "In WordStar mode: Search string, remember string for repetition."
 635   (interactive "sSearch for: ")
 636   (message "Forward (f) or backward (b)")
 637   (let ((direction
 638          (read-char)))
 639     (cond ((equal (upcase direction) ?F)
 640            (setq ws-search-string string)
 641            (setq ws-search-direction t)
 642            (setq ws-last-cursorposition (point-marker))
 643            (search-forward string))
 644           ((equal (upcase direction) ?B)
 645            (setq ws-search-string string)
 646            (setq ws-search-direction nil)
 647            (setq ws-last-cursorposition (point-marker))
 648            (search-backward string))
 649           (t (keyboard-quit)))))
 650
 651 (defun ws-goto-block-end ()
 652   "In WordStar mode: Go to block end marker."
 653   (interactive)
 654   (if ws-block-end-marker
 655       (progn
 656         (setq ws-last-cursorposition (point-marker))
 657         (goto-char ws-block-end-marker))
 658     (ws-error "Block end marker not set")))
 659
 660 (defun ws-undo ()
 661   "In WordStar mode: Undo and give message about undoing more changes."
 662   (interactive)
 663   (undo)
 664   (message "Repeat C-q l to undo more changes."))
 665
 666 (defun ws-goto-last-cursorposition ()
 667   "In WordStar mode: "
 668   (interactive)
 669   (if ws-last-cursorposition
 670       (progn
 671         (setq ws-last-cursorposition (point-marker))
 672         (goto-char ws-last-cursorposition))
 673     (ws-error "No last cursor position available.")))
 674
 675 (defun ws-last-error ()
 676   "In WordStar mode: repeat last error message.
 677 This will only work for errors raised by WordStar mode functions."
 678   (interactive)
 679   (if ws-last-errormessage
 680       (message "%s" ws-last-errormessage)
 681     (message "No WordStar error yet.")))
 682
 683 (defun ws-kill-eol ()
 684   "In WordStar mode: Kill to end of line (like WordStar, not like Emacs)."
 685   (interactive)
 686   (let ((p (point)))
 687     (end-of-line)
 688     (kill-region p (point))))
 689
 690 (defun ws-kill-bol ()
 691   "In WordStar mode: Kill to beginning of line
 692 \(like WordStar, not like Emacs)."
 693   (interactive)
 694   (let ((p (point)))
 695     (beginning-of-line)
 696     (kill-region (point) p)))
 697
 698 (defun kill-complete-line ()
 699   "Kill the complete line."
 700   (interactive)
 701   (beginning-of-line)
 702   (if (eobp) (error "End of buffer"))
 703   (let ((beg (point)))
 704     (forward-line 1)
 705     (kill-region beg (point))))
 706
 707 (defun ws-repeat-search ()
 708   "In WordStar mode: Repeat last search."
 709   (interactive)
 710   (setq ws-last-cursorposition (point-marker))
 711   (if ws-search-string
 712       (if ws-search-direction
 713           (search-forward ws-search-string)
 714         (search-backward ws-search-string))
 715     (ws-error "No search to repeat")))
 716
 717 (defun ws-query-replace (from to)
 718   "In WordStar mode: Search string, remember string for repetition."
 719   (interactive "sReplace: \n\
 720 sWith: " )
 721   (setq ws-search-string from)
 722   (setq ws-search-direction t)
 723   (setq ws-last-cursorposition (point-marker))
 724   (query-replace from to))
 725
 726 (defun ws-copy-block ()
 727   "In WordStar mode: Copy block to current cursor position."
 728   (interactive)
 729   (if (and ws-block-begin-marker ws-block-end-marker)
 730       (progn
 731         (copy-region-as-kill ws-block-begin-marker ws-block-end-marker)
 732         (yank)
 733         (save-excursion
 734           (goto-char (region-beginning))
 735           (setq ws-block-begin-marker (point-marker))
 736           (goto-char (region-end))
 737           (setq ws-block-end-marker (point-marker))))
 738     (ws-error (cond (ws-block-begin-marker "Block end marker not set")
 739                     (ws-block-end-marker "Block begin marker not set")
 740                     (t "Block markers not set")))))
 741
 742 (provide 'ws-mode)
 743
 744 ;;; ws-mode.el ends here