1 ;;; viper-cmd.el --- Vi command support for Viper
2 ;; Copyright (C) 1997 Free Software Foundation, Inc.
4 ;; This file is part of GNU Emacs.
6 ;; GNU Emacs is free software; you can redistribute it and/or modify
7 ;; it under the terms of the GNU General Public License as published by
8 ;; the Free Software Foundation; either version 2, or (at your option)
11 ;; GNU Emacs is distributed in the hope that it will be useful,
12 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
13 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 ;; GNU General Public License for more details.
16 ;; You should have received a copy of the GNU General Public License
17 ;; along with GNU Emacs; see the file COPYING. If not, write to the
18 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19 ;; Boston, MA 02111-1307, USA.
27 (defvar viper-minibuffer-current-face
)
28 (defvar viper-minibuffer-insert-face
)
29 (defvar viper-minibuffer-vi-face
)
30 (defvar viper-minibuffer-emacs-face
)
32 (defvar viper-mode-string
)
33 (defvar viper-custom-file-name
)
34 (defvar iso-accents-mode
)
36 (defvar quail-current-str
)
37 (defvar zmacs-region-stays
)
38 (defvar mark-even-if-inactive
)
40 ;; loading happens only in non-interactive compilation
41 ;; in order to spare non-viperized emacs from being viperized
44 (let ((load-path (cons (expand-file-name ".") load-path
)))
45 (or (featurep 'viper-util
)
46 (load "viper-util.el" nil nil
'nosuffix
))
47 (or (featurep 'viper-keym
)
48 (load "viper-keym.el" nil nil
'nosuffix
))
49 (or (featurep 'viper-mous
)
50 (load "viper-mous.el" nil nil
'nosuffix
))
51 (or (featurep 'viper-macs
)
52 (load "viper-macs.el" nil nil
'nosuffix
))
53 (or (featurep 'viper-ex
)
54 (load "viper-ex.el" nil nil
'nosuffix
))
69 ;; These test functions are shamelessly lifted from vip 4.4.2 by Aamod Sane
71 ;; generate test functions
72 ;; given symbol foo, foo-p is the test function, foos is the set of
74 ;; (macroexpand '(viper-test-com-defun foo))
75 ;; (defun foo-p (com) (consp (memq (if (< com 0) (- com) com) foos)))
77 (defmacro viper-test-com-defun
(name)
78 (let* ((snm (symbol-name name
))
79 (nm-p (intern (concat snm
"-p")))
80 (nms (intern (concat snm
"s"))))
81 (` (defun (, nm-p
) (com)
82 (consp (memq (if (and (viper-characterp com
) (< com
0))
83 (- com
) com
) (, nms
)))))))
85 ;; Variables for defining VI commands
87 ;; Modifying commands that can be prefixes to movement commands
88 (defconst viper-prefix-commands
'(?c ?d ?y ?
! ?
= ?
# ?
< ?
> ?
\"))
89 ;; define viper-prefix-command-p
90 (viper-test-com-defun viper-prefix-command)
92 ;; Commands that are pairs eg. dd. r and R here are a hack
93 (defconst viper-charpair-commands
'(?c ?d ?y ?
! ?
= ?
< ?
> ?r ?R
))
94 ;; define viper-charpair-command-p
95 (viper-test-com-defun viper-charpair-command)
97 (defconst viper-movement-commands
'(?b ?B ?e ?E ?f ?F ?G ?h ?H ?j ?k ?l
98 ?H ?M ?L ?n ?t ?T ?w ?W ?$ ?%
99 ?^ ?
( ?
) ?- ?
+ ?| ?
{ ?
} ?
[ ?
] ?
' ?
`
100 ?
; ?, ?0 ?? ?/ ?\C-m ?\
105 ;; define viper-movement-command-p
106 (viper-test-com-defun viper-movement-command)
109 (defconst viper-digit-commands
'(?
1 ?
2 ?
3 ?
4 ?
5 ?
6 ?
7 ?
8 ?
9))
111 ;; define viper-digit-command-p
112 (viper-test-com-defun viper-digit-command)
114 ;; Commands that can be repeated by . (dotted)
115 (defconst viper-dotable-commands
'(?c ?d ?C ?s ?S ?D ?
> ?
<))
116 ;; define viper-dotable-command-p
117 (viper-test-com-defun viper-dotable-command)
119 ;; Commands that can follow a #
120 (defconst viper-hash-commands
'(?c ?C ?g ?q ?s
))
121 ;; define viper-hash-command-p
122 (viper-test-com-defun viper-hash-command)
124 ;; Commands that may have registers as prefix
125 (defconst viper-regsuffix-commands
'(?d ?y ?Y ?D ?p ?P ?x ?X
))
126 ;; define viper-regsuffix-command-p
127 (viper-test-com-defun viper-regsuffix-command)
129 (defconst viper-vi-commands
(append viper-movement-commands
131 viper-dotable-commands
132 viper-charpair-commands
134 viper-prefix-commands
135 viper-regsuffix-commands
)
136 "The list of all commands in Vi-state.")
137 ;; define viper-vi-command-p
138 (viper-test-com-defun viper-vi-command)
145 ;; Runs viper-after-change-functions inside after-change-functions
146 (defun viper-after-change-sentinel (beg end len
)
147 (let ((list viper-after-change-functions
))
149 (funcall (car list
) beg end len
)
150 (setq list
(cdr list
)))))
152 ;; Runs viper-before-change-functions inside before-change-functions
153 (defun viper-before-change-sentinel (beg end
)
154 (let ((list viper-before-change-functions
))
156 (funcall (car list
) beg end
)
157 (setq list
(cdr list
)))))
159 (defsubst viper-post-command-sentinel
()
160 (run-hooks 'viper-post-command-hooks
))
162 (defsubst viper-pre-command-sentinel
()
163 (run-hooks 'viper-pre-command-hooks
))
165 ;; Needed so that Viper will be able to figure the last inserted
166 ;; chunk of text with reasonable accuracy.
167 (defsubst viper-insert-state-post-command-sentinel
()
168 (if (and (memq viper-current-state
'(insert-state replace-state
))
170 (>= (point) viper-insert-point
))
171 (setq viper-last-posn-while-in-insert-state
(point-marker)))
172 (if (eq viper-current-state
'insert-state
)
174 (or (stringp viper-saved-cursor-color
)
175 (string= (viper-get-cursor-color) viper-insert-state-cursor-color
)
176 (setq viper-saved-cursor-color
(viper-get-cursor-color)))
177 (if (stringp viper-saved-cursor-color
)
178 (viper-change-cursor-color viper-insert-state-cursor-color
))
180 (if (and (eq this-command
'dabbrev-expand
)
181 (integerp viper-pre-command-point
)
182 (markerp viper-insert-point
)
183 (marker-position viper-insert-point
)
184 (> viper-insert-point viper-pre-command-point
))
185 (viper-move-marker-locally viper-insert-point viper-pre-command-point
))
188 (defsubst viper-insert-state-pre-command-sentinel
()
189 (or (memq this-command
'(self-insert-command))
190 (memq (viper-event-key last-command-event
)
191 '(up down left right
(meta f
) (meta b
)
192 (control n
) (control p
) (control f
) (control b
)))
193 (viper-restore-cursor-color-after-insert))
194 (if (and (eq this-command
'dabbrev-expand
)
195 (markerp viper-insert-point
)
196 (marker-position viper-insert-point
))
197 (setq viper-pre-command-point
(marker-position viper-insert-point
))))
199 (defsubst viper-R-state-post-command-sentinel
()
200 ;; Restoring cursor color is needed despite
201 ;; viper-replace-state-pre-command-sentinel: When you jump to another buffer
202 ;; in another frame, the pre-command hook won't change cursor color to
203 ;; default in that other frame. So, if the second frame cursor was red and
204 ;; we set the point outside the replacement region, then the cursor color
205 ;; will remain red. Restoring the default, below, prevents this.
206 (if (and (<= (viper-replace-start) (point))
207 (<= (point) (viper-replace-end)))
208 (viper-change-cursor-color viper-replace-overlay-cursor-color
)
209 (viper-restore-cursor-color-after-replace)
212 ;; to speed up, don't change cursor color before self-insert
213 ;; and common move commands
214 (defsubst viper-replace-state-pre-command-sentinel
()
215 (or (memq this-command
'(self-insert-command))
216 (memq (viper-event-key last-command-event
)
217 '(up down left right
(meta f
) (meta b
)
218 (control n
) (control p
) (control f
) (control b
)))
219 (viper-restore-cursor-color-after-replace)))
221 (defun viper-replace-state-post-command-sentinel ()
222 ;; Restoring cursor color is needed despite
223 ;; viper-replace-state-pre-command-sentinel: When one jumps to another buffer
224 ;; in another frame, the pre-command hook won't change cursor color to
225 ;; default in that other frame. So, if the second frame cursor was red and
226 ;; we set the point outside the replacement region, then the cursor color
227 ;; will remain red. Restoring the default, below, fixes this problem.
229 ;; We optimize for self-insert-command's here, since they either don't change
230 ;; cursor color or, if they terminate replace mode, the color will be changed
231 ;; in viper-finish-change
232 (or (memq this-command
'(self-insert-command))
233 (viper-restore-cursor-color-after-replace))
235 ((eq viper-current-state
'replace-state
)
236 ;; delete characters to compensate for inserted chars.
237 (let ((replace-boundary (viper-replace-end)))
239 (goto-char viper-last-posn-in-replace-region
)
240 (viper-trim-replace-chars-to-delete-if-necessary)
241 (delete-char viper-replace-chars-to-delete
)
242 (setq viper-replace-chars-to-delete
0)
243 ;; terminate replace mode if reached replace limit
244 (if (= viper-last-posn-in-replace-region
(viper-replace-end))
245 (viper-finish-change)))
247 (if (viper-pos-within-region
248 (point) (viper-replace-start) replace-boundary
)
250 ;; the state may have changed in viper-finish-change above
251 (if (eq viper-current-state
'replace-state
)
252 (viper-change-cursor-color viper-replace-overlay-cursor-color
))
253 (setq viper-last-posn-in-replace-region
(point-marker))))
255 ;; terminate replace mode if changed Viper states.
256 (t (viper-finish-change))))
261 ;; Change state to NEW-STATE---either emacs-state, vi-state, or insert-state.
262 (defun viper-change-state (new-state)
263 ;; Keep viper-post/pre-command-hooks fresh.
264 ;; We remove then add viper-post/pre-command-sentinel since it is very
265 ;; desirable that viper-pre-command-sentinel is the last hook and
266 ;; viper-post-command-sentinel is the first hook.
267 (remove-hook 'post-command-hook
'viper-post-command-sentinel
)
268 (add-hook 'post-command-hook
'viper-post-command-sentinel
)
269 (remove-hook 'pre-command-hook
'viper-pre-command-sentinel
)
270 (add-hook 'pre-command-hook
'viper-pre-command-sentinel t
)
271 ;; These hooks will be added back if switching to insert/replace mode
272 (viper-remove-hook 'viper-post-command-hooks
273 'viper-insert-state-post-command-sentinel
)
274 (viper-remove-hook 'viper-pre-command-hooks
275 'viper-insert-state-pre-command-sentinel
)
276 (setq viper-intermediate-command nil
)
277 (cond ((eq new-state
'vi-state
)
278 (cond ((member viper-current-state
'(insert-state replace-state
))
280 ;; move viper-last-posn-while-in-insert-state
281 ;; This is a normal hook that is executed in insert/replace
282 ;; states after each command. In Vi/Emacs state, it does
283 ;; nothing. We need to execute it here to make sure that
284 ;; the last posn was recorded when we hit ESC.
285 ;; It may be left unrecorded if the last thing done in
286 ;; insert/repl state was dabbrev-expansion or abbrev
287 ;; expansion caused by hitting ESC
288 (viper-insert-state-post-command-sentinel)
290 (condition-case conds
292 (viper-save-last-insertion
294 viper-last-posn-while-in-insert-state
)
295 (if viper-began-as-replace
296 (setq viper-began-as-replace nil
)
297 ;; repeat insert commands if numerical arg > 1
299 (viper-repeat-insert-command))))
301 (viper-message-conditions conds
)))
303 (if (> (length viper-last-insertion
) 0)
304 (viper-push-onto-ring viper-last-insertion
305 'viper-insertion-ring
))
307 (if viper-ex-style-editing
308 (or (bolp) (backward-char 1))))
312 ((memq new-state
'(insert-state replace-state
))
313 (if (memq viper-current-state
'(emacs-state vi-state
))
314 (viper-move-marker-locally 'viper-insert-point
(point)))
315 (viper-move-marker-locally
316 'viper-last-posn-while-in-insert-state
(point))
317 (viper-add-hook 'viper-post-command-hooks
318 'viper-insert-state-post-command-sentinel t
)
319 (viper-add-hook 'viper-pre-command-hooks
320 'viper-insert-state-pre-command-sentinel t
))
323 ;; Nothing needs to be done to switch to emacs mode! Just set some
324 ;; variables, which is already done in viper-change-state-to-emacs!
327 ;; always turn off iso-accents-mode in vi-state, or else we won't be able to
328 ;; use the keys `,',^ , as they will do accents instead of Vi actions.
329 (cond ((eq new-state
'vi-state
) (viper-set-iso-accents-mode nil
));accents off
330 (viper-automatic-iso-accents (viper-set-iso-accents-mode t
));accents on
331 (t (viper-set-iso-accents-mode nil
)))
332 ;; Always turn off quail mode in vi state
333 (cond ((eq new-state
'vi-state
) (viper-set-input-method nil
)) ;intl input off
334 (viper-special-input-method (viper-set-input-method t
)) ;intl input on
335 (t (viper-set-input-method nil
)))
337 (setq viper-current-state new-state
)
339 (viper-update-syntax-classes)
340 (viper-normalize-minor-mode-map-alist)
341 (viper-adjust-keys-for new-state
)
342 (viper-set-mode-vars-for new-state
)
343 (viper-refresh-mode-line)
348 (defun viper-adjust-keys-for (state)
349 "Make necessary adjustments to keymaps before entering STATE."
350 (cond ((memq state
'(insert-state replace-state
))
351 (if viper-auto-indent
353 (define-key viper-insert-basic-map
"\C-m" 'viper-autoindent
)
354 (if viper-want-emacs-keys-in-insert
356 (define-key viper-insert-basic-map
"\C-j" nil
)
358 (define-key viper-insert-basic-map
"\C-j" 'viper-autoindent
)))
359 (define-key viper-insert-basic-map
"\C-m" nil
)
360 (define-key viper-insert-basic-map
"\C-j" nil
))
362 (setq viper-insert-diehard-minor-mode
363 (not viper-want-emacs-keys-in-insert
))
365 (if viper-want-ctl-h-help
367 (define-key viper-insert-basic-map
"\C-h" 'help-command
)
368 (define-key viper-replace-map
"\C-h" 'help-command
))
369 (define-key viper-insert-basic-map
370 "\C-h" 'viper-del-backward-char-in-insert
)
371 (define-key viper-replace-map
372 "\C-h" 'viper-del-backward-char-in-replace
))
373 ;; In XEmacs, C-h overrides backspace, so we make sure it doesn't.
374 (define-key viper-insert-basic-map
375 [backspace] 'viper-del-backward-char-in-insert)
376 (define-key viper-replace-map
377 [backspace] 'viper-del-backward-char-in-replace
)
378 ) ; end insert/replace case
380 (setq viper-vi-diehard-minor-mode
(not viper-want-emacs-keys-in-vi
))
381 (if viper-want-ctl-h-help
382 (define-key viper-vi-basic-map
"\C-h" 'help-command
)
383 (define-key viper-vi-basic-map
"\C-h" 'viper-backward-char
))
384 ;; In XEmacs, C-h overrides backspace, so we make sure it doesn't.
385 (define-key viper-vi-basic-map
[backspace] 'viper-backward-char))
389 ;; Normalizes minor-mode-map-alist by putting Viper keymaps first.
390 ;; This ensures that Viper bindings are in effect, regardless of which minor
391 ;; modes were turned on by the user or by other packages.
392 (defun viper-normalize-minor-mode-map-alist ()
393 (setq minor-mode-map-alist
394 (viper-append-filter-alist
396 (cons 'viper-vi-intercept-minor-mode viper-vi-intercept-map)
397 (cons 'viper-vi-minibuffer-minor-mode viper-minibuffer-map)
398 (cons 'viper-vi-local-user-minor-mode viper-vi-local-user-map)
399 (cons 'viper-vi-kbd-minor-mode viper-vi-kbd-map)
400 (cons 'viper-vi-global-user-minor-mode viper-vi-global-user-map)
401 (cons 'viper-vi-state-modifier-minor-mode
403 (cdr (assoc major-mode
404 viper-vi-state-modifier-alist)))
405 (cdr (assoc major-mode viper-vi-state-modifier-alist))
407 (cons 'viper-vi-diehard-minor-mode viper-vi-diehard-map)
408 (cons 'viper-vi-basic-minor-mode viper-vi-basic-map)
409 (cons 'viper-insert-intercept-minor-mode
410 viper-insert-intercept-map)
411 (cons 'viper-replace-minor-mode viper-replace-map)
412 ;; viper-insert-minibuffer-minor-mode must come after
413 ;; viper-replace-minor-mode
414 (cons 'viper-insert-minibuffer-minor-mode
415 viper-minibuffer-map)
416 (cons 'viper-insert-local-user-minor-mode
417 viper-insert-local-user-map)
418 (cons 'viper-insert-kbd-minor-mode viper-insert-kbd-map)
419 (cons 'viper-insert-global-user-minor-mode
420 viper-insert-global-user-map)
421 (cons 'viper-insert-state-modifier-minor-mode
423 (cdr (assoc major-mode
424 viper-insert-state-modifier-alist)))
425 (cdr (assoc major-mode
426 viper-insert-state-modifier-alist))
428 (cons 'viper-insert-diehard-minor-mode viper-insert-diehard-map)
429 (cons 'viper-insert-basic-minor-mode viper-insert-basic-map)
430 (cons 'viper-emacs-intercept-minor-mode
431 viper-emacs-intercept-map)
432 (cons 'viper-emacs-local-user-minor-mode
433 viper-emacs-local-user-map)
434 (cons 'viper-emacs-kbd-minor-mode viper-emacs-kbd-map)
435 (cons 'viper-emacs-global-user-minor-mode
436 viper-emacs-global-user-map)
437 (cons 'viper-emacs-state-modifier-minor-mode
440 (assoc major-mode viper-emacs-state-modifier-alist)))
442 (assoc major-mode viper-emacs-state-modifier-alist))
445 minor-mode-map-alist)))
451 ;; Viper mode-changing commands and utilities
453 ;; Modifies mode-line-buffer-identification.
454 (defun viper-refresh-mode-line ()
455 (setq viper-mode-string
456 (cond ((eq viper-current-state 'emacs-state) viper-emacs-state-id)
457 ((eq viper-current-state 'vi-state) viper-vi-state-id)
458 ((eq viper-current-state 'replace-state) viper-replace-state-id)
459 ((eq viper-current-state 'insert-state) viper-insert-state-id)))
461 ;; Sets Viper mode string in global-mode-string
462 (force-mode-line-update))
465 ;; Switch from Insert state to Vi state.
466 (defun viper-exit-insert-state ()
468 (viper-change-state-to-vi))
470 (defun viper-set-mode-vars-for (state)
471 "Sets Viper minor mode variables to put Viper's state STATE in effect."
474 (setq viper-vi-minibuffer-minor-mode nil
475 viper-insert-minibuffer-minor-mode nil
476 viper-vi-intercept-minor-mode nil
477 viper-insert-intercept-minor-mode nil
479 viper-vi-local-user-minor-mode nil
480 viper-vi-kbd-minor-mode nil
481 viper-vi-global-user-minor-mode nil
482 viper-vi-state-modifier-minor-mode nil
483 viper-vi-diehard-minor-mode nil
484 viper-vi-basic-minor-mode nil
486 viper-replace-minor-mode nil
488 viper-insert-local-user-minor-mode nil
489 viper-insert-kbd-minor-mode nil
490 viper-insert-global-user-minor-mode nil
491 viper-insert-state-modifier-minor-mode nil
492 viper-insert-diehard-minor-mode nil
493 viper-insert-basic-minor-mode nil
494 viper-emacs-intercept-minor-mode t
495 viper-emacs-local-user-minor-mode t
496 viper-emacs-kbd-minor-mode (not (viper-is-in-minibuffer))
497 viper-emacs-global-user-minor-mode t
498 viper-emacs-state-modifier-minor-mode t
502 (if (eq state 'vi-state) ; adjust for vi-state
504 viper-vi-intercept-minor-mode t
505 viper-vi-minibuffer-minor-mode (viper-is-in-minibuffer)
506 viper-vi-local-user-minor-mode t
507 viper-vi-kbd-minor-mode (not (viper-is-in-minibuffer))
508 viper-vi-global-user-minor-mode t
509 viper-vi-state-modifier-minor-mode t
510 ;; don't let the diehard keymap block command completion
511 ;; and other things in the minibuffer
512 viper-vi-diehard-minor-mode (not
513 (or viper-want-emacs-keys-in-vi
514 (viper-is-in-minibuffer)))
515 viper-vi-basic-minor-mode t
516 viper-emacs-intercept-minor-mode nil
517 viper-emacs-local-user-minor-mode nil
518 viper-emacs-kbd-minor-mode nil
519 viper-emacs-global-user-minor-mode nil
520 viper-emacs-state-modifier-minor-mode nil
523 ;; Insert and Replace states
524 (if (member state '(insert-state replace-state))
526 viper-insert-intercept-minor-mode t
527 viper-replace-minor-mode (eq state 'replace-state)
528 viper-insert-minibuffer-minor-mode (viper-is-in-minibuffer)
529 viper-insert-local-user-minor-mode t
530 viper-insert-kbd-minor-mode (not (viper-is-in-minibuffer))
531 viper-insert-global-user-minor-mode t
532 viper-insert-state-modifier-minor-mode t
533 ;; don't let the diehard keymap block command completion
534 ;; and other things in the minibuffer
535 viper-insert-diehard-minor-mode (not
537 viper-want-emacs-keys-in-insert
538 (viper-is-in-minibuffer)))
539 viper-insert-basic-minor-mode t
540 viper-emacs-intercept-minor-mode nil
541 viper-emacs-local-user-minor-mode nil
542 viper-emacs-kbd-minor-mode nil
543 viper-emacs-global-user-minor-mode nil
544 viper-emacs-state-modifier-minor-mode nil
548 (if (viper-has-face-support-p)
549 (setq viper-minibuffer-current-face
550 (cond ((eq state 'emacs-state) viper-minibuffer-emacs-face)
551 ((eq state 'vi-state) viper-minibuffer-vi-face)
552 ((memq state '(insert-state replace-state))
553 viper-minibuffer-insert-face))))
555 (if (viper-is-in-minibuffer)
556 (viper-set-minibuffer-overlay))
559 ;; This also takes care of the annoying incomplete lines in files.
560 ;; Also, this fixes `undo' to work vi-style for complex commands.
561 (defun viper-change-state-to-vi ()
562 "Change Viper state to Vi."
564 (if (and viper-first-time (not (viper-is-in-minibuffer)))
566 (if overwrite-mode (overwrite-mode nil))
567 (if abbrev-mode (expand-abbrev))
568 (if (and auto-fill-function (> (current-column) fill-column))
569 (funcall auto-fill-function))
570 ;; don't leave whitespace lines around
571 (if (and (memq last-command
573 viper-open-line viper-Open-line
574 viper-replace-state-exit-cmd))
575 (viper-over-whitespace-line))
576 (indent-to-left-margin))
577 (viper-add-newline-at-eob-if-necessary)
579 (viper-change-state 'vi-state)
581 (viper-restore-cursor-color-after-insert)
583 ;; Protect against user errors in hooks
584 (condition-case conds
585 (run-hooks 'viper-vi-state-hook)
587 (viper-message-conditions conds)))))
589 (defun viper-change-state-to-insert ()
590 "Change Viper state to Insert."
592 (viper-change-state 'insert-state)
594 (or (stringp viper-saved-cursor-color)
595 (string= (viper-get-cursor-color) viper-insert-state-cursor-color)
596 (setq viper-saved-cursor-color (viper-get-cursor-color)))
597 ;; Commented out, because if viper-change-state-to-insert is executed
598 ;; non-interactively then the old cursor color may get lost. Same old Emacs
599 ;; bug related to local variables?
600 ;;;(if (stringp viper-saved-cursor-color)
601 ;;; (viper-change-cursor-color viper-insert-state-cursor-color))
603 ;; Protect against user errors in hooks
604 (condition-case conds
605 (run-hooks 'viper-insert-state-hook)
607 (viper-message-conditions conds))))
609 (defsubst viper-downgrade-to-insert ()
610 (setq viper-current-state 'insert-state
611 viper-replace-minor-mode nil))
615 ;; Change to replace state. When the end of replacement region is reached,
616 ;; replace state changes to insert state.
617 (defun viper-change-state-to-replace (&optional non-R-cmd)
618 (viper-change-state 'replace-state)
619 ;; Run insert-state-hook
620 (condition-case conds
621 (run-hooks 'viper-insert-state-hook 'viper-replace-state-hook)
623 (viper-message-conditions conds)))
626 (viper-start-replace)
627 ;; 'R' is implemented using Emacs's overwrite-mode
628 (viper-start-R-mode))
632 (defun viper-change-state-to-emacs ()
633 "Change Viper state to Emacs."
635 (viper-change-state 'emacs-state)
637 ;; Protect agains user errors in hooks
638 (condition-case conds
639 (run-hooks 'viper-emacs-state-hook)
641 (viper-message-conditions conds))))
643 ;; escape to emacs mode termporarily
644 (defun viper-escape-to-emacs (arg &optional events)
645 "Escape to Emacs state from Vi state for one Emacs command.
646 ARG is used as the prefix value for the executed command. If
647 EVENTS is a list of events, which become the beginning of the command."
649 (if (= last-command-char ?\\)
650 (message "Switched to EMACS state for the next command..."))
651 (viper-escape-to-state arg events 'emacs-state))
653 ;; escape to Vi mode termporarily
654 (defun viper-escape-to-vi (arg)
655 "Escape from Emacs state to Vi state for one Vi 1-character command.
656 If the Vi command that the user types has a prefix argument, e.g., `d2w', then
657 Vi's prefix argument will be used. Otherwise, the prefix argument passed to
658 `viper-escape-to-vi' is used."
660 (message "Switched to VI state for the next command...")
661 (viper-escape-to-state arg nil 'vi-state))
663 ;; Escape to STATE mode for one Emacs command.
664 (defun viper-escape-to-state (arg events state)
665 ;;(let (com key prefix-arg)
667 ;; this temporarily turns off Viper's minor mode keymaps
668 (viper-set-mode-vars-for state)
669 (viper-normalize-minor-mode-map-alist)
670 (if events (viper-set-unread-command-events events))
672 ;; protect against keyboard quit and other errors
674 (let (viper-vi-kbd-minor-mode
675 viper-insert-kbd-minor-mode
676 viper-emacs-kbd-minor-mode)
679 (setq com (key-binding (setq key
681 (read-key-sequence nil)
682 (read-key-sequence nil t)))))
683 ;; In case of binding indirection--chase definitions.
684 ;; Have to do it here because we execute this command under
685 ;; different keymaps, so command-execute may not do the
687 (while (vectorp com) (setq com (key-binding com))))
689 ;; Execute command com in the original Viper state, not in state
690 ;; `state'. Otherwise, if we switch buffers while executing the
691 ;; escaped to command, Viper's mode vars will remain those of
692 ;; `state'. When we return to the orig buffer, the bindings will be
694 (viper-set-mode-vars-for viper-current-state)
696 ;; this-command, last-command-char, last-command-event
697 (setq this-command com)
698 (if viper-xemacs-p ; XEmacs represents key sequences as vectors
699 (setq last-command-event
700 (viper-copy-event (viper-seq-last-elt key))
701 last-command-char (event-to-character last-command-event))
702 ;; Emacs represents them as sequences (str or vec)
703 (setq last-command-event
704 (viper-copy-event (viper-seq-last-elt key))
705 last-command-char last-command-event))
709 (setq prefix-arg (or prefix-arg arg))
710 (command-execute com)))
714 ;; set state in the new buffer
715 (viper-set-mode-vars-for viper-current-state))
717 (defun viper-exec-form-in-vi (form)
718 "Execute FORM in Vi state, regardless of the Ccurrent Vi state."
719 (let ((buff (current-buffer))
721 (viper-set-mode-vars-for 'vi-state)
724 (let (viper-vi-kbd-minor-mode) ; execute without kbd macros
725 (setq result (eval form))
730 (if (not (equal buff (current-buffer))) ; cmd switched buffer
733 (viper-set-mode-vars-for viper-current-state)))
734 (viper-set-mode-vars-for viper-current-state)
737 (defun viper-exec-form-in-emacs (form)
738 "Execute FORM in Emacs, temporarily disabling Viper's minor modes.
739 Similar to viper-escape-to-emacs, but accepts forms rather than keystrokes."
740 (let ((buff (current-buffer))
742 (viper-set-mode-vars-for 'emacs-state)
743 (setq result (eval form))
744 (if (not (equal buff (current-buffer))) ; cmd switched buffer
747 (viper-set-mode-vars-for viper-current-state)))
748 (viper-set-mode-vars-for viper-current-state)
752 ;; This is needed because minor modes sometimes override essential Viper
753 ;; bindings. By letting Viper know which files these modes are in, it will
754 ;; arrange to reorganize minor-mode-map-alist so that things will work right.
755 (defun viper-harness-minor-mode (load-file)
756 "Familiarize Viper with a minor mode defined in LOAD_FILE.
757 Minor modes that have their own keymaps may overshadow Viper keymaps.
758 This function is designed to make Viper aware of the packages that define
761 (viper-harness-minor-mode load-file)
763 LOAD-FILE is a name of the file where the specific minor mode is defined.
764 Suffixes such as .el or .elc should be stripped."
766 (interactive "sEnter name of the load file: ")
768 (eval-after-load load-file '(viper-normalize-minor-mode-map-alist))
770 ;; Change the default for minor-mode-map-alist each time a harnessed minor
771 ;; mode adds its own keymap to the a-list.
773 load-file '(setq-default minor-mode-map-alist minor-mode-map-alist))
777 (defun viper-ESC (arg)
778 "Emulate ESC key in Emacs.
779 Prevents multiple escape keystrokes if viper-no-multiple-ESC is true.
780 If viper-no-multiple-ESC is 'twice double ESC would ding in vi-state.
781 Other ESC sequences are emulated via the current Emacs's major mode
782 keymap. This is more convenient on TTYs, since this won't block
783 function keys such as up,down, etc. ESC will also will also work as
784 a Meta key in this case. When viper-no-multiple-ESC is nil, ESC functions
785 as a Meta key and any number of multiple escapes is allowed."
788 (cond ((and (not viper-no-multiple-ESC) (eq viper-current-state 'vi-state))
789 (setq char (viper-read-char-exclusive))
790 (viper-escape-to-emacs arg (list ?\e char) ))
791 ((and (eq viper-no-multiple-ESC 'twice)
792 (eq viper-current-state 'vi-state))
793 (setq char (viper-read-char-exclusive))
794 (if (= char (string-to-char viper-ESC-key))
796 (viper-escape-to-emacs arg (list ?\e char) )))
800 (defun viper-alternate-Meta-key (arg)
801 "Simulate Emacs Meta key."
803 (sit-for 1) (message "ESC-")
804 (viper-escape-to-emacs arg '(?\e)))
806 (defun viper-toggle-key-action ()
807 "Action bound to `viper-toggle-key'."
809 (if (and (< viper-expert-level 2) (equal viper-toggle-key "\C-z"))
810 (if (viper-window-display-p)
813 (viper-change-state-to-emacs)))
816 ;; Intercept ESC sequences on dumb terminals.
817 ;; Based on the idea contributed by Marcelino Veiga Tuimil <mveiga@dit.upm.es>
819 ;; Check if last key was ESC and if so try to reread it as a function key.
820 ;; But only if there are characters to read during a very short time.
821 ;; Returns the last event, if any.
822 (defun viper-envelop-ESC-key ()
823 (let ((event last-input-event)
826 (if (viper-ESC-event-p event)
828 (if (viper-fast-keysequence-p)
830 (let (minor-mode-map-alist)
831 (viper-set-unread-command-events event)
834 (ad-get-orig-definition 'read-key-sequence) nil))
836 ;; If keyseq translates into something that still has ESC
837 ;; at the beginning, separate ESC from the rest of the seq.
838 ;; In XEmacs we check for events that are keypress meta-key
839 ;; and convert them into [escape key]
841 ;; This is needed for the following reason:
842 ;; If ESC is the first symbol, we interpret it as if the
843 ;; user typed ESC and then quickly some other symbols.
844 ;; If ESC is not the first one, then the key sequence
845 ;; entered was apparently translated into a function key or
846 ;; something (e.g., one may have
847 ;; (define-key function-key-map "\e[192z" [f11])
848 ;; which would translate the escape-sequence generated by
849 ;; f11 in an xterm window into the symbolic key f11.
851 ;; If `first-key' is not an ESC event, we make it into the
852 ;; last-command-event in order to pretend that this key was
853 ;; pressed. This is needed to allow arrow keys to be bound to
854 ;; macros. Otherwise, viper-exec-mapped-kbd-macro will think
855 ;; that the last event was ESC and so it'll execute whatever is
856 ;; bound to ESC. (Viper macros can't be bound to
858 (let* ((first-key (elt keyseq 0))
859 (key-mod (event-modifiers first-key)))
860 (cond ((viper-ESC-event-p first-key)
861 ;; put keys following ESC on the unread list
862 ;; and return ESC as the key-sequence
863 (viper-set-unread-command-events (subseq keyseq 1))
864 (setq last-input-event event
865 keyseq (if viper-emacs-p
867 (vector (character-to-event ?\e)))))
869 (key-press-event-p first-key)
870 (equal '(meta) key-mod))
871 (viper-set-unread-command-events
873 (character-to-event (event-key first-key)))
875 (setq last-input-event event
876 keyseq (vector (character-to-event ?\e))))
878 (setq last-command-event
879 (viper-copy-event first-key)))
883 ;; this is escape event with nothing after it
884 ;; put in unread-command-event and then re-read
885 (viper-set-unread-command-events event)
887 (funcall (ad-get-orig-definition 'read-key-sequence) nil))
889 ;; not an escape event
890 (setq keyseq (vector event)))
895 ;; Listen to ESC key.
896 ;; If a sequence of keys starting with ESC is issued with very short delays,
897 ;; interpret these keys in Emacs mode, so ESC won't be interpreted as a Vi key.
898 (defun viper-intercept-ESC-key ()
899 "Function that implements ESC key in Viper emulation of Vi."
901 (let ((cmd (or (key-binding (viper-envelop-ESC-key))
902 '(lambda () (interactive) (error "")))))
904 ;; call the actual function to execute ESC (if no other symbols followed)
905 ;; or the key bound to the ESC sequence (if the sequence was issued
906 ;; with very short delay between characters.
907 (if (eq cmd 'viper-intercept-ESC-key)
909 (cond ((eq viper-current-state 'vi-state)
911 ((eq viper-current-state 'insert-state)
912 'viper-exit-insert-state)
913 ((eq viper-current-state 'replace-state)
914 'viper-replace-state-exit-cmd)
915 (t 'viper-change-state-to-vi)
917 (call-interactively cmd)))
922 ;; prefix argument for Vi mode
924 ;; In Vi mode, prefix argument is a dotted pair (NUM . COM) where NUM
925 ;; represents the numeric value of the prefix argument and COM represents
926 ;; command prefix such as "c", "d", "m" and "y".
928 ;; Get value part of prefix-argument ARG.
929 (defsubst viper-p-val (arg)
932 (if (or (null (car arg)) (equal (car arg) '(nil)))
936 ;; Get raw value part of prefix-argument ARG.
937 (defsubst viper-P-val (arg)
938 (cond ((consp arg) (car arg))
941 ;; Get com part of prefix-argument ARG.
942 (defsubst viper-getcom (arg)
943 (cond ((null arg) nil)
944 ((consp arg) (cdr arg))
947 ;; Get com part of prefix-argument ARG and modify it.
948 (defun viper-getCom (arg)
949 (let ((com (viper-getcom arg)))
950 (cond ((equal com ?c) ?c)
951 ;; Previously, ?c was being converted to ?C, but this prevented
952 ;; multiline replace regions.
953 ;;((equal com ?c) ?C)
959 ;; Compute numeric prefix arg value.
960 ;; Invoked by EVENT. COM is the command part obtained so far.
961 (defun viper-prefix-arg-value (event com)
962 (let ((viper-intermediate-command 'viper-digit-argument)
965 (while (and (viper-characterp event) (>= event ?0) (<= event ?9))
966 (setq value (+ (* (if (integerp value) value 0) 10) (- event ?0)))
967 (setq event (viper-read-event-convert-to-char)))
969 (setq prefix-arg value)
970 (if com (setq prefix-arg (cons prefix-arg com)))
972 (viper-describe-arg prefix-arg)
973 (setq event (viper-read-event-convert-to-char)))
975 (if (or com (and (not (eq viper-current-state 'vi-state))
976 ;; make sure it is a Vi command
977 (viper-characterp event) (viper-vi-command-p event)
979 ;; If appears to be one of the vi commands,
980 ;; then execute it with funcall and clear prefix-arg in order to not
981 ;; confuse subsequent commands
983 ;; last-command-char is the char we want emacs to think was typed
984 ;; last. If com is not nil, the viper-digit-argument command was
985 ;; called from within viper-prefix-arg command, such as `d', `w',
986 ;; etc., i.e., the user typed, say, d2. In this case, `com' would be
987 ;; `d', `w', etc. If viper-digit-argument was invoked by
988 ;; viper-escape-to-vi (which is indicated by the fact that the
989 ;; current state is not vi-state), then `event' represents the vi
990 ;; command to be executed (e.g., `d', `w', etc). Again,
991 ;; last-command-char must make emacs believe that this is the command
993 (cond ((eq event 'return) (setq event ?\C-m))
994 ((eq event 'delete) (setq event ?\C-?))
995 ((eq event 'backspace) (setq event ?\C-h))
996 ((eq event 'space) (setq event ?\ )))
997 (setq last-command-char (or com event))
998 (setq func (viper-exec-form-in-vi
999 (` (key-binding (char-to-string (, event))))))
1000 (funcall func prefix-arg)
1001 (setq prefix-arg nil))
1002 ;; some other command -- let emacs do it in its own way
1003 (viper-set-unread-command-events event))
1007 ;; Vi operator as prefix argument."
1008 (defun viper-prefix-arg-com (char value com)
1014 (list ?c ?d ?y ?! ?< ?> ?= ?# ?r ?R ?\"
1015 viper-buffer-search-char)))
1017 ;; this means that we already have a command character, so we
1018 ;; construct a com list and exit while. however, if char is "
1021 ;; new com is (CHAR . OLDCOM)
1022 (if (memq char '(?# ?\")) (error ""))
1023 (setq com (cons char com))
1025 ;; If com is nil we set com as char, and read more. Again, if char is
1026 ;; ", we read the name of register and store it in viper-use-register.
1027 ;; if char is !, =, or #, a complete com is formed so we exit the while
1029 (cond ((memq char '(?! ?=))
1031 (setq char (read-char))
1034 ;; read a char and encode it as com
1035 (setq com (+ 128 (read-char)))
1036 (setq char (read-char)))
1038 (let ((reg (read-char)))
1039 (if (viper-valid-register reg)
1040 (setq viper-use-register reg)
1042 (setq char (read-char))))
1045 (setq char (read-char))))))
1048 ;; `com' is a single char, so we construct the command argument
1049 ;; and if `char' is `?', we describe the arg; otherwise
1050 ;; we prepare the command that will be executed at the end.
1052 (setq cmd-info (cons value com))
1054 (viper-describe-arg cmd-info)
1055 (setq char (read-char)))
1056 ;; `char' is a movement cmd, a digit arg cmd, or a register cmd---so we
1057 ;; execute it at the very end
1058 (or (viper-movement-command-p char)
1059 (viper-digit-command-p char)
1060 (viper-regsuffix-command-p char)
1061 (= char ?!) ; bang command
1063 (setq cmd-to-exec-at-end
1064 (viper-exec-form-in-vi
1065 (` (key-binding (char-to-string (, char)))))))
1067 ;; as com is non-nil, this means that we have a command to execute
1068 (if (memq (car com) '(?r ?R))
1069 ;; execute apropriate region command.
1070 (let ((char (car com)) (com (cdr com)))
1071 (setq prefix-arg (cons value com))
1072 (if (= char ?r) (viper-region prefix-arg)
1073 (viper-Region prefix-arg))
1075 (setq prefix-arg nil))
1076 ;; otherwise, reset prefix arg and call appropriate command
1077 (setq value (if (null value) 1 value))
1078 (setq prefix-arg nil)
1080 ;; If we change ?C to ?c here, then cc will enter replacement mode
1081 ;; rather than deleting lines. However, it will affect 1 less line than
1082 ;; normal. We decided to not use replacement mode here and follow Vi,
1083 ;; since replacement mode on n full lines can be achieved with nC.
1084 ((equal com '(?c . ?c)) (viper-line (cons value ?C)))
1085 ((equal com '(?d . ?d)) (viper-line (cons value ?D)))
1086 ((equal com '(?d . ?y)) (viper-yank-defun))
1087 ((equal com '(?y . ?y)) (viper-line (cons value ?Y)))
1088 ((equal com '(?< . ?<)) (viper-line (cons value ?<)))
1089 ((equal com '(?> . ?>)) (viper-line (cons value ?>)))
1090 ((equal com '(?! . ?!)) (viper-line (cons value ?!)))
1091 ((equal com '(?= . ?=)) (viper-line (cons value ?=)))
1094 (if cmd-to-exec-at-end
1096 (setq last-command-char char)
1097 (setq last-command-event
1099 (if viper-xemacs-p (character-to-event char) char)))
1101 (funcall cmd-to-exec-at-end cmd-info)
1106 (defun viper-describe-arg (arg)
1108 (setq val (viper-P-val arg)
1109 com (viper-getcom arg))
1112 (message "Value is nil, and command is nil")
1113 (message "Value is nil, and command is `%c'" com))
1115 (message "Value is `%d', and command is nil" val)
1116 (message "Value is `%d', and command is `%c'" val com)))))
1118 (defun viper-digit-argument (arg)
1119 "Begin numeric argument for the next command."
1121 (viper-leave-region-active)
1122 (viper-prefix-arg-value
1123 last-command-char (if (consp arg) (cdr arg) nil)))
1125 (defun viper-command-argument (arg)
1126 "Accept a motion command as an argument."
1128 (let ((viper-intermediate-command 'viper-command-argument))
1130 (viper-prefix-arg-com
1132 (cond ((null arg) nil)
1133 ((consp arg) (car arg))
1134 ((integerp arg) arg)
1135 (t (error viper-InvalidCommandArgument)))
1136 (cond ((null arg) nil)
1137 ((consp arg) (cdr arg))
1138 ((integerp arg) nil)
1139 (t (error viper-InvalidCommandArgument))))
1140 (quit (setq viper-use-register nil)
1141 (signal 'quit nil)))
1142 (viper-deactivate-mark)))
1145 ;; repeat last destructive command
1147 ;; Append region to text in register REG.
1148 ;; START and END are buffer positions indicating what to append.
1149 (defsubst viper-append-to-register (reg start end)
1150 (set-register reg (concat (if (stringp (get-register reg))
1151 (get-register reg) "")
1152 (buffer-substring start end))))
1154 ;; Saves last inserted text for possible use by viper-repeat command.
1155 (defun viper-save-last-insertion (beg end)
1157 (setq viper-last-insertion (buffer-substring beg end))
1159 ;; beg or end marker are somehow screwed up
1160 (setq viper-last-insertion nil)))
1161 (setq viper-last-insertion (buffer-substring beg end))
1162 (or (< (length viper-d-com) 5)
1163 (setcar (nthcdr 4 viper-d-com) viper-last-insertion))
1164 (or (null viper-command-ring)
1165 (ring-empty-p viper-command-ring)
1167 (setcar (nthcdr 4 (viper-current-ring-item viper-command-ring))
1168 viper-last-insertion)
1169 ;; del most recent elt, if identical to the second most-recent
1170 (viper-cleanup-ring viper-command-ring)))
1173 (defsubst viper-yank-last-insertion ()
1174 "Inserts the text saved by the previous viper-save-last-insertion command."
1176 (insert viper-last-insertion)
1180 ;; define functions to be executed
1182 ;; invoked by the `C' command
1183 (defun viper-exec-change (m-com com)
1184 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1185 (set-marker viper-com-point (point) (current-buffer)))
1186 ;; handle C cmd at the eol and at eob.
1187 (if (or (and (eolp) (= viper-com-point (point)))
1188 (= viper-com-point (point-max)))
1190 (insert " ")(backward-char 1)))
1191 (if (= viper-com-point (point))
1192 (viper-forward-char-carefully))
1193 (set-mark viper-com-point)
1194 (if (eq m-com 'viper-next-line-at-bol)
1195 (viper-enlarge-region (mark t) (point)))
1196 (if (< (point) (mark t))
1197 (exchange-point-and-mark))
1198 (if (eq (preceding-char) ?\n)
1199 (viper-backward-char-carefully)) ; give back the newline
1201 (viper-change (mark t) (point))
1202 (viper-change-subr (mark t) (point))))
1204 ;; this is invoked by viper-substitute-line
1205 (defun viper-exec-Change (m-com com)
1207 (set-mark viper-com-point)
1208 (viper-enlarge-region (mark t) (point))
1209 (if viper-use-register
1211 (cond ((viper-valid-register viper-use-register '(letter digit))
1213 viper-use-register (mark t) (point) nil))
1214 ((viper-valid-register viper-use-register '(Letter))
1215 (viper-append-to-register
1216 (downcase viper-use-register) (mark t) (point)))
1217 (t (setq viper-use-register nil)
1218 (error viper-InvalidRegister viper-use-register)))
1219 (setq viper-use-register nil)))
1220 (delete-region (mark t) (point)))
1223 (viper-change-state-to-insert)
1224 (viper-yank-last-insertion)))
1226 (defun viper-exec-delete (m-com com)
1227 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1228 (set-marker viper-com-point (point) (current-buffer)))
1229 (if viper-use-register
1231 (cond ((viper-valid-register viper-use-register '(letter digit))
1233 viper-use-register viper-com-point (point) nil))
1234 ((viper-valid-register viper-use-register '(Letter))
1235 (viper-append-to-register
1236 (downcase viper-use-register) viper-com-point (point)))
1237 (t (setq viper-use-register nil)
1238 (error viper-InvalidRegister viper-use-register)))
1239 (setq viper-use-register nil)))
1241 (if (eq last-command 'd-command) 'kill-region nil))
1242 (kill-region viper-com-point (point))
1243 (setq this-command 'd-command)
1244 (if viper-ex-style-motion
1245 (if (and (eolp) (not (bolp))) (backward-char 1))))
1247 (defun viper-exec-Delete (m-com com)
1249 (set-mark viper-com-point)
1250 (viper-enlarge-region (mark t) (point))
1251 (if viper-use-register
1253 (cond ((viper-valid-register viper-use-register '(letter digit))
1255 viper-use-register (mark t) (point) nil))
1256 ((viper-valid-register viper-use-register '(Letter))
1257 (viper-append-to-register
1258 (downcase viper-use-register) (mark t) (point)))
1259 (t (setq viper-use-register nil)
1260 (error viper-InvalidRegister viper-use-register)))
1261 (setq viper-use-register nil)))
1263 (if (eq last-command 'D-command) 'kill-region nil))
1264 (kill-region (mark t) (point))
1265 (if (eq m-com 'viper-line) (setq this-command 'D-command)))
1266 (back-to-indentation))
1268 (defun viper-exec-yank (m-com com)
1269 (or (and (markerp viper-com-point) (marker-position viper-com-point))
1270 (set-marker viper-com-point (point) (current-buffer)))
1271 (if viper-use-register
1273 (cond ((viper-valid-register viper-use-register '(letter digit))
1275 viper-use-register viper-com-point (point) nil))
1276 ((viper-valid-register viper-use-register '(Letter))
1277 (viper-append-to-register
1278 (downcase viper-use-register) viper-com-point (point)))
1279 (t (setq viper-use-register nil)
1280 (error viper-InvalidRegister viper-use-register)))
1281 (setq viper-use-register nil)))
1282 (setq last-command nil)
1283 (copy-region-as-kill viper-com-point (point))
1284 (goto-char viper-com-point))
1286 (defun viper-exec-Yank (m-com com)
1288 (set-mark viper-com-point)
1289 (viper-enlarge-region (mark t) (point))
1290 (if viper-use-register
1292 (cond ((viper-valid-register viper-use-register '(letter digit))
1294 viper-use-register (mark t) (point) nil))
1295 ((viper-valid-register viper-use-register '(Letter))
1296 (viper-append-to-register
1297 (downcase viper-use-register) (mark t) (point)))
1298 (t (setq viper-use-register nil)
1299 (error viper-InvalidRegister viper-use-register)))
1300 (setq viper-use-register nil)))
1301 (setq last-command nil)
1302 (copy-region-as-kill (mark t) (point)))
1303 (viper-deactivate-mark)
1304 (goto-char viper-com-point))
1306 (defun viper-exec-bang (m-com com)
1308 (set-mark viper-com-point)
1309 (viper-enlarge-region (mark t) (point))
1310 (exchange-point-and-mark)
1311 (shell-command-on-region
1314 (setq viper-last-shell-com
1315 (viper-read-string-with-history
1318 'viper-shell-history
1319 (car viper-shell-history)
1321 viper-last-shell-com)
1324 (defun viper-exec-equals (m-com com)
1326 (set-mark viper-com-point)
1327 (viper-enlarge-region (mark t) (point))
1328 (if (> (mark t) (point)) (exchange-point-and-mark))
1329 (indent-region (mark t) (point) nil)))
1331 (defun viper-exec-shift (m-com com)
1333 (set-mark viper-com-point)
1334 (viper-enlarge-region (mark t) (point))
1335 (if (> (mark t) (point)) (exchange-point-and-mark))
1336 (indent-rigidly (mark t) (point)
1339 (- viper-shift-width))))
1340 ;; return point to where it was before shift
1341 (goto-char viper-com-point))
1343 ;; this is needed because some commands fake com by setting it to ?r, which
1344 ;; denotes repeated insert command.
1345 (defsubst viper-exec-dummy (m-com com)
1348 (defun viper-exec-buffer-search (m-com com)
1349 (setq viper-s-string (buffer-substring (point) viper-com-point))
1350 (setq viper-s-forward t)
1351 (setq viper-search-history (cons viper-s-string viper-search-history))
1352 (viper-search viper-s-string viper-s-forward 1))
1354 (defvar viper-exec-array (make-vector 128 nil))
1356 ;; Using a dispatch array allows adding functions like buffer search
1357 ;; without affecting other functions. Buffer search can now be bound
1358 ;; to any character.
1360 (aset viper-exec-array ?c 'viper-exec-change)
1361 (aset viper-exec-array ?C 'viper-exec-Change)
1362 (aset viper-exec-array ?d 'viper-exec-delete)
1363 (aset viper-exec-array ?D 'viper-exec-Delete)
1364 (aset viper-exec-array ?y 'viper-exec-yank)
1365 (aset viper-exec-array ?Y 'viper-exec-Yank)
1366 (aset viper-exec-array ?r 'viper-exec-dummy)
1367 (aset viper-exec-array ?! 'viper-exec-bang)
1368 (aset viper-exec-array ?< 'viper-exec-shift)
1369 (aset viper-exec-array ?> 'viper-exec-shift)
1370 (aset viper-exec-array ?= 'viper-exec-equals)
1374 ;; This function is called by various movement commands to execute a
1375 ;; destructive command on the region specified by the movement command. For
1376 ;; instance, if the user types cw, then the command viper-forward-word will
1377 ;; call viper-execute-com to execute viper-exec-change, which eventually will
1378 ;; call viper-change to invoke the replace mode on the region.
1380 ;; The var viper-d-com is set to (M-COM VAL COM REG INSETED-TEXT COMMAND-KEYS)
1381 ;; via a call to viper-set-destructive-command, for later use by viper-repeat.
1382 (defun viper-execute-com (m-com val com)
1383 (let ((reg viper-use-register))
1384 ;; this is the special command `#'
1386 (viper-special-prefix-com (- com 128))
1387 (let ((fn (aref viper-exec-array (if (< com 0) (- com) com))))
1389 (error "%c: %s" com viper-InvalidViCommand)
1390 (funcall fn m-com com))))
1391 (if (viper-dotable-command-p com)
1392 (viper-set-destructive-command
1394 (if (memq com (list ?c ?C ?!)) (- com) com)
1399 (defun viper-repeat (arg)
1400 "Re-execute last destructive command.
1401 Use the info in viper-d-com, which has the form
1402 \(com val ch reg inserted-text command-keys\),
1403 where `com' is the command to be re-executed, `val' is the
1404 argument to `com', `ch' is a flag for repeat, and `reg' is optional;
1405 if it exists, it is the name of the register for `com'.
1406 If the prefix argument, ARG, is non-nil, it is used instead of `val'."
1408 (let ((save-point (point)) ; save point before repeating prev cmd
1409 ;; Pass along that we are repeating a destructive command
1410 ;; This tells viper-set-destructive-command not to update
1411 ;; viper-command-ring
1412 (viper-intermediate-command 'viper-repeat))
1413 (if (eq last-command 'viper-undo)
1414 ;; if the last command was viper-undo, then undo-more
1416 ;; otherwise execute the command stored in viper-d-com. if arg is
1417 ;; non-nil its prefix value is used as new prefix value for the command.
1418 (let ((m-com (car viper-d-com))
1419 (val (viper-P-val arg))
1420 (com (nth 2 viper-d-com))
1421 (reg (nth 3 viper-d-com)))
1422 (if (null val) (setq val (nth 1 viper-d-com)))
1423 (if (null m-com) (error "No previous command to repeat."))
1424 (setq viper-use-register reg)
1425 (if (nth 4 viper-d-com) ; text inserted by command
1426 (setq viper-last-insertion (nth 4 viper-d-com)
1427 viper-d-char (nth 4 viper-d-com)))
1428 (funcall m-com (cons val com))
1429 (cond ((and (< save-point (point)) viper-keep-point-on-repeat)
1430 (goto-char save-point)) ; go back to before repeat.
1431 ((and (< save-point (point)) viper-ex-style-editing)
1432 (or (bolp) (backward-char 1))))
1433 (if (and (eolp) (not (bolp)))
1436 (viper-adjust-undo) ; take care of undo
1437 ;; If the prev cmd was rotating the command ring, this means that `.' has
1438 ;; just executed a command from that ring. So, push it on the ring again.
1439 ;; If we are just executing previous command , then don't push viper-d-com
1440 ;; because viper-d-com is not fully constructed in this case (its keys and
1441 ;; the inserted text may be nil). Besides, in this case, the command
1442 ;; executed by `.' is already on the ring.
1443 (if (eq last-command 'viper-display-current-destructive-command)
1444 (viper-push-onto-ring viper-d-com 'viper-command-ring))
1445 (viper-deactivate-mark)
1448 (defun viper-repeat-from-history ()
1449 "Repeat a destructive command from history.
1450 Doesn't change viper-command-ring in any way, so `.' will work as before
1451 executing this command.
1452 This command is supposed to be bound to a two-character Vi macro where
1453 the second character is a digit 0 to 9. The digit indicates which
1454 history command to execute. `<char>0' is equivalent to `.', `<char>1'
1455 invokes the command before that, etc."
1457 (let* ((viper-intermediate-command 'repeating-display-destructive-command)
1458 (idx (cond (viper-this-kbd-macro
1460 (symbol-name (elt viper-this-kbd-macro 1))))
1463 (viper-d-com viper-d-com))
1465 (or (and (numberp num) (<= 0 num) (<= num 9))
1470 "`viper-repeat-from-history' must be invoked as a Vi macro bound to `<key><digit>'")))
1472 (setq viper-d-com (viper-special-ring-rotate1 viper-command-ring -1))
1473 (setq num (1- num)))
1476 (viper-special-ring-rotate1 viper-command-ring 1)
1477 (setq num (1+ num)))
1481 ;; The hash-command. It is invoked interactively by the key sequence #<char>.
1482 ;; The chars that can follow `#' are determined by viper-hash-command-p
1483 (defun viper-special-prefix-com (char)
1485 (downcase-region (min viper-com-point (point))
1486 (max viper-com-point (point))))
1488 (upcase-region (min viper-com-point (point))
1489 (max viper-com-point (point))))
1491 (push-mark viper-com-point t)
1492 (viper-global-execute))
1494 (push-mark viper-com-point t)
1495 (viper-quote-region))
1496 ((= char ?s) (funcall viper-spell-function viper-com-point (point)))
1497 (t (error "#%c: %s" char viper-InvalidViCommand))))
1502 (defun viper-undo ()
1503 "Undo previous change."
1506 (let ((modified (buffer-modified-p))
1507 (before-undo-pt (point-marker))
1508 (after-change-functions after-change-functions)
1509 undo-beg-posn undo-end-posn)
1511 ;; no need to remove this hook, since this var has scope inside a let.
1512 (add-hook 'after-change-functions
1513 '(lambda (beg end len)
1514 (setq undo-beg-posn beg
1515 undo-end-posn (or end beg))))
1519 (setq undo-beg-posn (or undo-beg-posn before-undo-pt)
1520 undo-end-posn (or undo-end-posn undo-beg-posn))
1522 (goto-char undo-beg-posn)
1524 (if (and viper-keep-point-on-undo
1525 (pos-visible-in-window-p before-undo-pt))
1527 (push-mark (point-marker) t)
1528 (viper-sit-for-short 300)
1529 (goto-char undo-end-posn)
1530 (viper-sit-for-short 300)
1531 (if (and (> (viper-chars-in-region undo-beg-posn before-undo-pt) 1)
1532 (> (viper-chars-in-region undo-end-posn before-undo-pt) 1))
1533 (goto-char before-undo-pt)
1534 (goto-char undo-beg-posn)))
1535 (push-mark before-undo-pt t))
1536 (if (and (eolp) (not (bolp))) (backward-char 1))
1537 (if (not modified) (set-buffer-modified-p t)))
1538 (setq this-command 'viper-undo))
1540 ;; Continue undoing previous changes.
1541 (defun viper-undo-more ()
1542 (message "undo more!")
1546 (message "No further undo information in this buffer")))
1547 (if (and (eolp) (not (bolp))) (backward-char 1))
1548 (setq this-command 'viper-undo))
1550 ;; The following two functions are used to set up undo properly.
1551 ;; In VI, unlike Emacs, if you open a line, say, and add a bunch of lines,
1552 ;; they are undone all at once.
1553 (defun viper-adjust-undo ()
1554 (if viper-undo-needs-adjustment
1555 (let ((inhibit-quit t)
1557 (setq viper-undo-needs-adjustment nil)
1558 (if (listp buffer-undo-list)
1559 (if (setq tmp (memq viper-buffer-undo-list-mark buffer-undo-list))
1561 (setq tmp2 (cdr tmp)) ; the part after mark
1563 ;; cut tail from buffer-undo-list temporarily by direct
1564 ;; manipulation with pointers in buffer-undo-list
1567 (setq buffer-undo-list (delq nil buffer-undo-list))
1568 (setq buffer-undo-list
1569 (delq viper-buffer-undo-list-mark buffer-undo-list))
1570 ;; restore tail of buffer-undo-list
1571 (setq buffer-undo-list (nconc buffer-undo-list tmp2)))
1572 (setq buffer-undo-list (delq nil buffer-undo-list)))))
1576 (defun viper-set-complex-command-for-undo ()
1577 (if (listp buffer-undo-list)
1578 (if (not viper-undo-needs-adjustment)
1579 (let ((inhibit-quit t))
1580 (setq buffer-undo-list
1581 (cons viper-buffer-undo-list-mark buffer-undo-list))
1582 (setq viper-undo-needs-adjustment t)))))
1587 (defun viper-display-current-destructive-command ()
1588 (let ((text (nth 4 viper-d-com))
1589 (keys (nth 5 viper-d-com))
1592 (setq this-command 'viper-display-current-destructive-command)
1594 (message " `.' runs %s%s"
1595 (concat "`" (viper-array-to-string keys) "'")
1596 (viper-abbreviate-string
1599 (cond ((characterp text) (char-to-string text))
1600 ((stringp text) text)
1605 " inserting `" "'" " ......."))
1609 ;; don't change viper-d-com if it was viper-repeat command invoked with `.'
1610 ;; or in some other way (non-interactively).
1611 (defun viper-set-destructive-command (list)
1612 (or (eq viper-intermediate-command 'viper-repeat)
1614 (setq viper-d-com list)
1615 (setcar (nthcdr 5 viper-d-com)
1616 (viper-array-to-string (if (arrayp viper-this-command-keys)
1617 viper-this-command-keys
1618 (this-command-keys))))
1619 (viper-push-onto-ring viper-d-com 'viper-command-ring)))
1620 (setq viper-this-command-keys nil))
1622 (defun viper-prev-destructive-command (next)
1623 "Find previous destructive command in the history of destructive commands.
1624 With prefix argument, find next destructive command."
1626 (let (cmd viper-intermediate-command)
1627 (if (eq last-command 'viper-display-current-destructive-command)
1628 ;; repeated search through command history
1629 (setq viper-intermediate-command
1630 'repeating-display-destructive-command)
1631 ;; first search through command history--set temp ring
1632 (setq viper-temp-command-ring (copy-list viper-command-ring)))
1634 (viper-special-ring-rotate1 viper-temp-command-ring 1)
1635 (viper-special-ring-rotate1 viper-temp-command-ring -1)))
1638 (setq viper-d-com cmd))
1639 (viper-display-current-destructive-command)))
1641 (defun viper-next-destructive-command ()
1642 "Find next destructive command in the history of destructive commands."
1644 (viper-prev-destructive-command 'next))
1646 (defun viper-insert-prev-from-insertion-ring (arg)
1647 "Cycle through insertion ring in the direction of older insertions.
1648 Undoes previous insertion and inserts new.
1649 With prefix argument, cycles in the direction of newer elements.
1650 In minibuffer, this command executes whatever the invocation key is bound
1651 to in the global map, instead of cycling through the insertion ring."
1653 (let (viper-intermediate-command)
1654 (if (eq last-command 'viper-insert-from-insertion-ring)
1655 (progn ; repeated search through insertion history
1656 (setq viper-intermediate-command 'repeating-insertion-from-ring)
1657 (if (eq viper-current-state 'replace-state)
1659 (if viper-last-inserted-string-from-insertion-ring
1660 (backward-delete-char
1661 (length viper-last-inserted-string-from-insertion-ring))))
1663 ;;first search through insertion history
1664 (setq viper-temp-insertion-ring (copy-list viper-insertion-ring)))
1665 (setq this-command 'viper-insert-from-insertion-ring)
1666 ;; so that things will be undone properly
1667 (setq buffer-undo-list (cons nil buffer-undo-list))
1668 (setq viper-last-inserted-string-from-insertion-ring
1669 (viper-special-ring-rotate1 viper-temp-insertion-ring (if arg 1 -1)))
1671 ;; this change of viper-intermediate-command must come after
1672 ;; viper-special-ring-rotate1, so that the ring will rotate, but before the
1674 (setq viper-intermediate-command nil)
1675 (if viper-last-inserted-string-from-insertion-ring
1676 (insert viper-last-inserted-string-from-insertion-ring))
1679 (defun viper-insert-next-from-insertion-ring ()
1680 "Cycle through insertion ring in the direction of older insertions.
1681 Undo previous insertion and inserts new."
1683 (viper-insert-prev-from-insertion-ring 'next))
1686 ;; some region utilities
1688 ;; If at the last line of buffer, add \\n before eob, if newline is missing.
1689 (defun viper-add-newline-at-eob-if-necessary ()
1692 ;; make sure all lines end with newline, unless in the minibuffer or
1693 ;; when requested otherwise (require-final-newline is nil)
1696 require-final-newline
1697 (not (viper-is-in-minibuffer))
1698 (not buffer-read-only))
1701 (defun viper-yank-defun ()
1703 (copy-region-as-kill (point) (mark t)))
1705 ;; Enlarge region between BEG and END.
1706 (defun viper-enlarge-region (beg end)
1707 (or beg (setq beg end)) ; if beg is nil, set to end
1708 (or end (setq end beg)) ; if end is nil, set to beg
1711 (progn (goto-char beg) (set-mark end))
1715 (exchange-point-and-mark)
1716 (if (or (not (eobp)) (not (bolp))) (forward-line 1))
1717 (if (not (eobp)) (beginning-of-line))
1718 (if (> beg end) (exchange-point-and-mark)))
1721 ;; Quote region by each line with a user supplied string.
1722 (defun viper-quote-region ()
1723 (setq viper-quote-string
1724 (viper-read-string-with-history
1727 'viper-quote-region-history
1728 viper-quote-string))
1729 (viper-enlarge-region (point) (mark t))
1730 (if (> (point) (mark t)) (exchange-point-and-mark))
1731 (insert viper-quote-string)
1734 (while (and (< (point) (mark t)) (bolp))
1735 (insert viper-quote-string)
1739 ;; Tells whether BEG is on the same line as END.
1740 ;; If one of the args is nil, it'll return nil.
1741 (defun viper-same-line (beg end)
1742 (let ((selective-display nil)
1745 (if (and beg end (> beg end))
1750 (cond ((or (> beg (point-max)) (> end (point-max))) ; out of range
1753 ;; This 'if' is needed because Emacs treats the next empty line
1754 ;; as part of the previous line.
1755 (if (= (viper-line-pos 'start) end)
1757 (<= (+ incr (count-lines beg end)) 1))))
1761 ;; Check if the string ends with a newline.
1762 (defun viper-end-with-a-newline-p (string)
1763 (or (string= string "")
1764 (= (viper-seq-last-elt string) ?\n)))
1766 (defun viper-tmp-insert-at-eob (msg)
1767 (let ((savemax (point-max)))
1771 (goto-char savemax) (delete-region (point) (point-max))
1776 ;;; Minibuffer business
1778 (defsubst viper-set-minibuffer-style ()
1779 (add-hook 'minibuffer-setup-hook 'viper-minibuffer-setup-sentinel))
1782 (defun viper-minibuffer-setup-sentinel ()
1783 (let ((hook (if viper-vi-style-in-minibuffer
1784 'viper-change-state-to-insert
1785 'viper-change-state-to-emacs)))
1789 ;; Interpret last event in the local map first; if fails, use exit-minibuffer.
1790 ;; Run viper-minibuffer-exit-hook before exiting.
1791 (defun viper-exit-minibuffer ()
1792 "Exit minibuffer Viper way."
1795 (setq command (local-key-binding (char-to-string last-command-char)))
1796 (run-hooks 'viper-minibuffer-exit-hook)
1798 (command-execute command)
1799 (exit-minibuffer))))
1802 (defcustom viper-smart-suffix-list
1803 '("" "tex" "c" "cc" "C" "el" "java" "html" "htm" "pl" "P" "p")
1804 "*List of suffixes that Viper tries to append to filenames ending with a `.'.
1805 This is useful when you the current directory contains files with the same
1806 prefix and many different suffixes. Usually, only one of the suffixes
1807 represents an editable file. However, file completion will stop at the `.'
1808 The smart suffix feature lets you hit RET in such a case, and Viper will
1809 select the appropriate suffix.
1811 Suffixes are tried in the order given and the first suffix for which a
1812 corresponding file exists is selected. If no file exists for any of the
1813 suffixes, the user is asked to confirm.
1815 To turn this feature off, set this variable to nil."
1816 :type '(repeat string)
1820 ;; Try to add a suitable suffix to files whose name ends with a `.'
1821 ;; Useful when the user hits RET on a non-completed file name.
1822 ;; Used as a minibuffer exit hook in read-file-name
1823 (defun viper-file-add-suffix ()
1825 (len (length viper-smart-suffix-list))
1826 (file (buffer-string))
1828 (goto-char (point-max))
1829 (if (and viper-smart-suffix-list (string-match "\\.$" file))
1831 (while (and (not found) (< count len))
1832 (setq suff (nth count viper-smart-suffix-list)
1835 (format "%s%s" (substitute-in-file-name file) suff))
1842 (viper-tmp-insert-at-eob " [Please complete file name]")
1844 (while (not (memq cmd
1845 '(exit-minibuffer viper-exit-minibuffer)))
1847 (key-binding (setq key (read-key-sequence nil))))
1848 (cond ((eq cmd 'self-insert-command)
1850 (insert (events-to-keys key))
1852 ((memq cmd '(exit-minibuffer viper-exit-minibuffer))
1854 (t (command-execute cmd)))
1859 (defun viper-minibuffer-trim-tail ()
1860 "Delete junk at the end of the first line of the minibuffer input.
1861 Remove this function from `viper-minibuffer-exit-hook', if this causes
1863 (if (viper-is-in-minibuffer)
1865 (goto-char (point-min))
1867 (delete-region (point) (point-max)))))
1870 ;;; Reading string with history
1872 (defun viper-read-string-with-history (prompt &optional initial
1873 history-var default keymap)
1874 ;; Read string, prompting with PROMPT and inserting the INITIAL
1875 ;; value. Uses HISTORY-VAR. DEFAULT is the default value to accept if the
1876 ;; input is an empty string. Use KEYMAP, if given, or the
1877 ;; minibuffer-local-map.
1878 ;; Default value is displayed until the user types something in the
1880 (let ((minibuffer-setup-hook
1882 (if (stringp initial)
1884 ;; don't wait if we have unread events or in kbd macro
1885 (or unread-command-events
1890 (viper-minibuffer-setup-sentinel)))
1895 (setq keymap (or keymap minibuffer-local-map)
1896 initial (or initial "")
1897 temp-msg (if default
1898 (format "(default: %s) " default)
1901 (setq viper-incomplete-ex-cmd nil)
1902 (setq val (read-from-minibuffer prompt
1903 (concat temp-msg initial val padding)
1904 keymap nil history-var))
1905 (setq minibuffer-setup-hook nil
1906 padding (viper-array-to-string (this-command-keys))
1908 ;; the following tries to be smart about what to put in history
1909 (if (not (string= val (car (eval history-var))))
1910 (set history-var (cons val (eval history-var))))
1911 (if (or (string= (nth 0 (eval history-var)) (nth 1 (eval history-var)))
1912 (string= (nth 0 (eval history-var)) ""))
1913 (set history-var (cdr (eval history-var))))
1914 ;; If the user enters nothing but the prev cmd wasn't viper-ex,
1915 ;; viper-command-argument, or `! shell-command', this probably means
1916 ;; that the user typed something then erased. Return "" in this case, not
1917 ;; the default---the default is too confusing in this case.
1918 (cond ((and (string= val "")
1919 (not (string= prompt "!")) ; was a `! shell-command'
1920 (not (memq last-command
1922 viper-command-argument
1926 ((string= val "") (or default ""))
1932 ;; insertion commands
1934 ;; Called when state changes from Insert Vi command mode.
1935 ;; Repeats the insertion command if Insert state was entered with prefix
1937 (defun viper-repeat-insert-command ()
1938 (let ((i-com (car viper-d-com))
1939 (val (nth 1 viper-d-com))
1940 (char (nth 2 viper-d-com)))
1941 (if (and val (> val 1)) ; first check that val is non-nil
1943 (setq viper-d-com (list i-com (1- val) ?r nil nil nil))
1945 (setq viper-d-com (list i-com val char nil nil nil))
1948 (defun viper-insert (arg)
1949 "Insert before point."
1951 (viper-set-complex-command-for-undo)
1952 (let ((val (viper-p-val arg))
1953 (com (viper-getcom arg)))
1954 (viper-set-destructive-command (list 'viper-insert val ?r nil nil nil))
1956 (viper-loop val (viper-yank-last-insertion))
1957 (viper-change-state-to-insert))))
1959 (defun viper-append (arg)
1960 "Append after point."
1962 (viper-set-complex-command-for-undo)
1963 (let ((val (viper-p-val arg))
1964 (com (viper-getcom arg)))
1965 (viper-set-destructive-command (list 'viper-append val ?r nil nil nil))
1966 (if (not (eolp)) (forward-char))
1968 (viper-loop val (viper-yank-last-insertion))
1969 (viper-change-state-to-insert))))
1971 (defun viper-Append (arg)
1972 "Append at end of line."
1974 (viper-set-complex-command-for-undo)
1975 (let ((val (viper-p-val arg))
1976 (com (viper-getcom arg)))
1977 (viper-set-destructive-command (list 'viper-Append val ?r nil nil nil))
1980 (viper-loop val (viper-yank-last-insertion))
1981 (viper-change-state-to-insert))))
1983 (defun viper-Insert (arg)
1984 "Insert before first non-white."
1986 (viper-set-complex-command-for-undo)
1987 (let ((val (viper-p-val arg))
1988 (com (viper-getcom arg)))
1989 (viper-set-destructive-command (list 'viper-Insert val ?r nil nil nil))
1990 (back-to-indentation)
1992 (viper-loop val (viper-yank-last-insertion))
1993 (viper-change-state-to-insert))))
1995 (defun viper-open-line (arg)
1998 (viper-set-complex-command-for-undo)
1999 (let ((val (viper-p-val arg))
2000 (com (viper-getcom arg)))
2001 (viper-set-destructive-command (list 'viper-open-line val ?r nil nil nil))
2002 (let ((col (current-indentation)))
2007 (if viper-auto-indent
2010 (if viper-electric-mode
2011 (indent-according-to-mode)
2014 (viper-yank-last-insertion))
2017 (if viper-auto-indent
2020 (if viper-electric-mode
2021 (indent-according-to-mode)
2023 (viper-change-state-to-insert)))))
2025 (defun viper-Open-line (arg)
2028 (viper-set-complex-command-for-undo)
2029 (let ((val (viper-p-val arg))
2030 (com (viper-getcom arg)))
2031 (viper-set-destructive-command (list 'viper-Open-line val ?r nil nil nil))
2032 (let ((col (current-indentation)))
2037 (if viper-auto-indent
2040 (if viper-electric-mode
2041 (indent-according-to-mode)
2044 (viper-yank-last-insertion))
2047 (if viper-auto-indent
2050 (if viper-electric-mode
2051 (indent-according-to-mode)
2054 (viper-change-state-to-insert)))))
2056 (defun viper-open-line-at-point (arg)
2057 "Open line at point."
2059 (viper-set-complex-command-for-undo)
2060 (let ((val (viper-p-val arg))
2061 (com (viper-getcom arg)))
2062 (viper-set-destructive-command
2063 (list 'viper-open-line-at-point val ?r nil nil nil))
2067 (viper-yank-last-insertion))
2069 (viper-change-state-to-insert))))
2071 (defun viper-substitute (arg)
2072 "Substitute characters."
2074 (let ((val (viper-p-val arg))
2075 (com (viper-getcom arg)))
2079 (viper-change-subr (mark t) (point))
2080 (viper-change (mark t) (point)))
2081 (viper-set-destructive-command (list 'viper-substitute val ?r nil nil nil))
2084 ;; Command bound to S
2085 (defun viper-substitute-line (arg)
2088 (viper-set-complex-command-for-undo)
2089 (viper-line (cons arg ?C)))
2091 ;; Prepare for replace
2092 (defun viper-start-replace ()
2093 (setq viper-began-as-replace t
2094 viper-sitting-in-replace t
2095 viper-replace-chars-to-delete 0)
2097 'viper-after-change-functions 'viper-replace-mode-spy-after t)
2099 'viper-before-change-functions 'viper-replace-mode-spy-before t)
2100 ;; this will get added repeatedly, but no harm
2101 (add-hook 'after-change-functions 'viper-after-change-sentinel t)
2102 (add-hook 'before-change-functions 'viper-before-change-sentinel t)
2103 (viper-move-marker-locally 'viper-last-posn-in-replace-region
2104 (viper-replace-start))
2106 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel t)
2108 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel t)
2109 ;; guard against a smartie who switched from R-replace to normal replace
2111 'viper-post-command-hooks 'viper-R-state-post-command-sentinel)
2112 (if overwrite-mode (overwrite-mode nil))
2116 (defun viper-replace-mode-spy-before (beg end)
2117 (setq viper-replace-region-chars-deleted (viper-chars-in-region beg end))
2120 ;; Invoked as an after-change-function to calculate how many chars have to be
2121 ;; deleted. This function may be called several times within a single command,
2122 ;; if this command performs several separate buffer changes. Therefore, if adds
2123 ;; up the number of chars inserted and subtracts the number of chars deleted.
2124 (defun viper-replace-mode-spy-after (beg end length)
2125 (if (memq viper-intermediate-command
2126 '(dabbrev-expand repeating-insertion-from-ring))
2127 ;; Take special care of text insertion from insertion ring inside
2128 ;; replacement overlays.
2130 (setq viper-replace-chars-to-delete 0)
2131 (viper-move-marker-locally
2132 'viper-last-posn-in-replace-region (point)))
2134 (let* ((real-end (min end (viper-replace-end)))
2135 (column-shift (- (save-excursion (goto-char real-end)
2137 (save-excursion (goto-char beg)
2142 (setq chars-deleted viper-replace-region-chars-deleted))
2143 (setq viper-replace-region-chars-deleted 0)
2144 (setq viper-replace-chars-to-delete
2145 (+ viper-replace-chars-to-delete
2147 ;; if column shift is bigger, due to a TAB insertion, take
2148 ;; column-shift instead of the number of inserted chars
2149 (max (viper-chars-in-region beg real-end)
2150 ;; This test accounts for Chinese/Japanese/... chars,
2151 ;; which occupy 2 columns instead of one. If we use
2152 ;; column-shift here, we may delete two chars instead of
2153 ;; one when the user types one Chinese character. Deleting
2154 ;; two would be OK, if they were European chars, but it is
2155 ;; not OK if they are Chinese chars. Since it is hard to
2156 ;; figure out which characters are being deleted in any
2157 ;; given region, we decided to treat Eastern and European
2158 ;; characters equally, even though Eastern chars may
2159 ;; occupy more columns.
2160 (if (memq this-command '(self-insert-command
2161 quoted-insert viper-insert-tab))
2164 ;; the number of deleted chars
2167 (viper-move-marker-locally
2168 'viper-last-posn-in-replace-region
2169 (max (if (> end (viper-replace-end)) (viper-replace-end) end)
2170 (or (marker-position viper-last-posn-in-replace-region)
2171 (viper-replace-start))
2176 ;; Make sure we don't delete more than needed.
2177 ;; This is executed at viper-last-posn-in-replace-region
2178 (defsubst viper-trim-replace-chars-to-delete-if-necessary ()
2179 (setq viper-replace-chars-to-delete
2181 (min viper-replace-chars-to-delete
2182 ;; Don't delete more than to the end of repl overlay
2183 (viper-chars-in-region
2184 (viper-replace-end) viper-last-posn-in-replace-region)
2185 ;; point is viper-last-posn-in-replace-region now
2186 ;; So, this limits deletion to the end of line
2187 (viper-chars-in-region (point) (viper-line-pos 'end))
2191 ;; Delete stuff between viper-last-posn-in-replace-region and the end of
2192 ;; viper-replace-overlay-marker, if viper-last-posn-in-replace-region is within
2193 ;; the overlay and current point is before the end of the overlay.
2194 ;; Don't delete anything if current point is past the end of the overlay.
2195 (defun viper-finish-change ()
2197 'viper-after-change-functions 'viper-replace-mode-spy-after)
2199 'viper-before-change-functions 'viper-replace-mode-spy-before)
2201 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel)
2203 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel)
2204 (viper-restore-cursor-color-after-replace)
2205 (setq viper-sitting-in-replace nil) ; just in case we'll need to know it
2207 (if (and viper-replace-overlay
2208 (viper-pos-within-region viper-last-posn-in-replace-region
2209 (viper-replace-start)
2210 (viper-replace-end))
2211 (< (point) (viper-replace-end)))
2213 viper-last-posn-in-replace-region (viper-replace-end))))
2215 (if (eq viper-current-state 'replace-state)
2216 (viper-downgrade-to-insert))
2217 ;; replace mode ended => nullify viper-last-posn-in-replace-region
2218 (viper-move-marker-locally 'viper-last-posn-in-replace-region nil)
2219 (viper-hide-replace-overlay)
2220 (viper-refresh-mode-line)
2221 (viper-put-string-on-kill-ring viper-last-replace-region)
2224 ;; Make STRING be the first element of the kill ring.
2225 (defun viper-put-string-on-kill-ring (string)
2226 (setq kill-ring (cons string kill-ring))
2227 (if (> (length kill-ring) kill-ring-max)
2228 (setcdr (nthcdr (1- kill-ring-max) kill-ring) nil))
2229 (setq kill-ring-yank-pointer kill-ring))
2231 (defun viper-finish-R-mode ()
2233 'viper-post-command-hooks 'viper-R-state-post-command-sentinel)
2235 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel)
2236 (viper-downgrade-to-insert))
2238 (defun viper-start-R-mode ()
2239 ;; Leave arg as 1, not t: XEmacs insists that it must be a pos number
2242 'viper-post-command-hooks 'viper-R-state-post-command-sentinel t)
2244 'viper-pre-command-hooks 'viper-replace-state-pre-command-sentinel t)
2245 ;; guard against a smartie who switched from R-replace to normal replace
2247 'viper-post-command-hooks 'viper-replace-state-post-command-sentinel)
2252 (defun viper-replace-state-exit-cmd ()
2253 "Binding for keys that cause Replace state to switch to Vi or to Insert.
2254 These keys are ESC, RET, and LineFeed"
2256 (if overwrite-mode ; if in replace mode invoked via 'R'
2257 (viper-finish-R-mode)
2258 (viper-finish-change))
2260 (if (eq this-command 'viper-intercept-ESC-key)
2261 (setq com 'viper-exit-insert-state)
2262 (viper-set-unread-command-events last-input-char)
2263 (setq com (key-binding (read-key-sequence nil))))
2265 (condition-case conds
2266 (command-execute com)
2268 (viper-message-conditions conds)))
2270 (viper-hide-replace-overlay))
2273 (defun viper-replace-state-carriage-return ()
2274 "Carriage return in Viper replace state."
2276 ;; If Emacs start supporting overlay maps, as it currently supports
2277 ;; text-property maps, we could do away with viper-replace-minor-mode and
2278 ;; just have keymap attached to replace overlay. Then the "if part" of this
2279 ;; statement can be deleted.
2280 (if (or (< (point) (viper-replace-start))
2281 (> (point) (viper-replace-end)))
2282 (let (viper-replace-minor-mode com)
2283 (viper-set-unread-command-events last-input-char)
2284 (setq com (key-binding (read-key-sequence nil)))
2285 (condition-case conds
2286 (command-execute com)
2288 (viper-message-conditions conds))))
2289 (if (not viper-allow-multiline-replace-regions)
2290 (viper-replace-state-exit-cmd)
2291 (if (viper-same-line (point) (viper-replace-end))
2292 (viper-replace-state-exit-cmd)
2293 ;; delete the rest of line
2294 (delete-region (point) (viper-line-pos 'end))
2297 (if (eobp) (error "Last line in buffer")))
2298 ;; skip to the next line
2300 (back-to-indentation)
2304 ;; This is the function bound to 'R'---unlimited replace.
2305 ;; Similar to Emacs's own overwrite-mode.
2306 (defun viper-overwrite (arg)
2307 "Begin overwrite mode."
2309 (let ((val (viper-p-val arg))
2310 (com (viper-getcom arg)) (len))
2311 (viper-set-destructive-command (list 'viper-overwrite val ?r nil nil nil))
2314 ;; Viper saves inserted text in viper-last-insertion
2315 (setq len (length viper-last-insertion))
2317 (viper-loop val (viper-yank-last-insertion)))
2318 (setq last-command 'viper-overwrite)
2319 (viper-set-complex-command-for-undo)
2320 (viper-set-replace-overlay (point) (viper-line-pos 'end))
2321 (viper-change-state-to-replace)
2327 (defun viper-line (arg)
2328 (let ((val (car arg))
2330 (viper-move-marker-locally 'viper-com-point (point))
2332 (viper-next-line-carefully (1- val)))
2333 ;; this ensures that dd, cc, D, yy will do the right thing on the last
2334 ;; line of buffer when this line has no \n.
2335 (viper-add-newline-at-eob-if-necessary)
2336 (viper-execute-com 'viper-line val com))
2337 (if (and (eobp) (not (bobp))) (forward-line -1))
2340 (defun viper-yank-line (arg)
2341 "Yank ARG lines (in Vi's sense)."
2343 (let ((val (viper-p-val arg)))
2344 (viper-line (cons val ?Y))))
2349 (defun viper-region (arg)
2350 "Execute command on a region."
2352 (let ((val (viper-P-val arg))
2353 (com (viper-getcom arg)))
2354 (viper-move-marker-locally 'viper-com-point (point))
2355 (exchange-point-and-mark)
2356 (viper-execute-com 'viper-region val com)))
2358 (defun viper-Region (arg)
2359 "Execute command on a Region."
2361 (let ((val (viper-P-val arg))
2362 (com (viper-getCom arg)))
2363 (viper-move-marker-locally 'viper-com-point (point))
2364 (exchange-point-and-mark)
2365 (viper-execute-com 'viper-Region val com)))
2367 (defun viper-replace-char (arg)
2368 "Replace the following ARG chars by the character read."
2370 (if (and (eolp) (bolp)) (error "No character to replace here"))
2371 (let ((val (viper-p-val arg))
2372 (com (viper-getcom arg)))
2373 (viper-replace-char-subr com val)
2374 (if (and (eolp) (not (bolp))) (forward-char 1))
2375 (setq viper-this-command-keys
2376 (format "%sr" (if (integerp arg) arg "")))
2377 (viper-set-destructive-command
2378 (list 'viper-replace-char val ?r nil viper-d-char nil))
2381 (defun viper-replace-char-subr (com arg)
2383 (setq char (if (equal com ?r)
2386 (let (inhibit-quit) ; preserve consistency of undo-list and iso-accents
2387 (if (and viper-automatic-iso-accents (memq char '(?' ?\" ?^ ?~)))
2388 ;; get European characters
2390 (viper-set-iso-accents-mode t)
2391 (viper-set-unread-command-events char)
2392 (setq char (aref (read-key-sequence nil) 0))
2393 (viper-set-iso-accents-mode nil)))
2394 (viper-set-complex-command-for-undo)
2395 (if (eq char ?\C-m) (setq char ?\n))
2396 (if (and viper-special-input-method (fboundp 'quail-start-translation))
2397 ;; get Intl. characters
2399 (viper-set-input-method t)
2400 (setq last-command-event
2402 (if viper-xemacs-p (character-to-event char) char)))
2408 (quail-start-translation 1)
2409 (quail-start-translation)))
2411 ;; quail translation failed
2412 (if (and (not (stringp quail-current-str))
2413 (not (viper-characterp quail-current-str)))
2418 (viper-set-input-method nil)
2419 (error "Composing character failed, changes undone")))
2420 ;; quail translation seems ok
2422 ;;(setq char quail-current-str))
2423 (setq char (viper-char-at-pos 'backward)))
2424 (setq viper-d-char char)
2425 (viper-loop (1- (if (> arg 0) arg (- arg)))
2428 (viper-set-input-method nil))
2430 (setq viper-d-char char)
2431 (viper-loop (if (> arg 0) arg (- arg))
2434 (backward-char arg))))
2437 ;; basic cursor movement. j, k, l, h commands.
2439 (defun viper-forward-char (arg)
2440 "Move point right ARG characters (left if ARG negative).
2441 On reaching end of line, stop and signal error."
2443 (viper-leave-region-active)
2444 (let ((val (viper-p-val arg))
2445 (com (viper-getcom arg)))
2446 (if com (viper-move-marker-locally 'viper-com-point (point)))
2447 (if viper-ex-style-motion
2449 ;; the boundary condition check gets weird here because
2450 ;; forward-char may be the parameter of a delete, and 'dl' works
2451 ;; just like 'x' for the last char on a line, so we have to allow
2452 ;; the forward motion before the 'viper-execute-com', but, of
2453 ;; course, 'dl' doesn't work on an empty line, so we have to
2454 ;; catch that condition before 'viper-execute-com'
2455 (if (and (eolp) (bolp)) (error "") (forward-char val))
2456 (if com (viper-execute-com 'viper-forward-char val com))
2457 (if (eolp) (progn (backward-char 1) (error ""))))
2459 (if com (viper-execute-com 'viper-forward-char val com)))))
2461 (defun viper-backward-char (arg)
2462 "Move point left ARG characters (right if ARG negative).
2463 On reaching beginning of line, stop and signal error."
2465 (viper-leave-region-active)
2466 (let ((val (viper-p-val arg))
2467 (com (viper-getcom arg)))
2468 (if com (viper-move-marker-locally 'viper-com-point (point)))
2469 (if viper-ex-style-motion
2471 (if (bolp) (error "") (backward-char val))
2472 (if com (viper-execute-com 'viper-backward-char val com)))
2474 (if com (viper-execute-com 'viper-backward-char val com)))))
2476 ;; Like forward-char, but doesn't move at end of buffer.
2477 ;; Returns distance traveled
2478 ;; (positive or 0, if arg positive; negative if arg negative).
2479 (defun viper-forward-char-carefully (&optional arg)
2480 (setq arg (or arg 1))
2485 (if (< (point) pt) ; arg was negative
2486 (- (viper-chars-in-region pt (point)))
2487 (viper-chars-in-region pt (point)))))
2489 ;; Like backward-char, but doesn't move at beg of buffer.
2490 ;; Returns distance traveled
2491 ;; (negative or 0, if arg positive; positive if arg negative).
2492 (defun viper-backward-char-carefully (&optional arg)
2493 (setq arg (or arg 1))
2498 (if (> (point) pt) ; arg was negative
2499 (viper-chars-in-region pt (point))
2500 (- (viper-chars-in-region pt (point))))))
2502 (defun viper-next-line-carefully (arg)
2511 ;; Words are formed from alpha's and nonalphas - <sp>,\t\n are separators for
2512 ;; word movement. When executed with a destructive command, \n is usually left
2513 ;; untouched for the last word. Viper uses syntax table to determine what is a
2514 ;; word and what is a separator. However, \n is always a separator. Also, if
2515 ;; viper-syntax-preference is 'vi, then `_' is part of the word.
2518 (defun viper-skip-separators (forward)
2521 (viper-skip-all-separators-forward 'within-line)
2522 (if (looking-at "\n")
2525 (viper-skip-all-separators-forward 'within-line))))
2526 (viper-skip-all-separators-backward 'within-line)
2527 (viper-backward-char-carefully)
2528 (if (looking-at "\n")
2529 (viper-skip-all-separators-backward 'within-line)
2532 (defun viper-forward-word-kernel (val)
2534 (cond ((viper-looking-at-alpha)
2535 (viper-skip-alpha-forward "_")
2536 (viper-skip-separators t))
2537 ((viper-looking-at-separator)
2538 (viper-skip-separators t))
2539 ((not (viper-looking-at-alphasep))
2540 (viper-skip-nonalphasep-forward)
2541 (viper-skip-separators t)))
2542 (setq val (1- val))))
2544 ;; first skip non-newline separators backward, then skip \n. Then, if TWICE is
2545 ;; non-nil, skip non-\n back again, but don't overshoot the limit LIM.
2546 (defun viper-separator-skipback-special (twice lim)
2547 (let ((prev-char (viper-char-at-pos 'backward))
2548 (saved-point (point)))
2549 ;; skip non-newline separators backward
2550 (while (and (not (memq prev-char '(nil \n)))
2552 ;; must be non-newline separator
2553 (if (eq viper-syntax-preference 'strict-vi)
2554 (memq prev-char '(?\ ?\t))
2555 (memq (char-syntax prev-char) '(?\ ?-))))
2556 (viper-backward-char-carefully)
2557 (setq prev-char (viper-char-at-pos 'backward)))
2559 (if (and (< lim (point)) (eq prev-char ?\n))
2561 ;; If we skipped to the next word and the prefix of this line doesn't
2562 ;; consist of separators preceded by a newline, then don't skip backwards
2564 (goto-char saved-point))
2565 (setq prev-char (viper-char-at-pos 'backward))
2567 ;; skip again, but make sure we don't overshoot the limit
2569 (while (and (not (memq prev-char '(nil \n)))
2571 ;; must be non-newline separator
2572 (if (eq viper-syntax-preference 'strict-vi)
2573 (memq prev-char '(?\ ?\t))
2574 (memq (char-syntax prev-char) '(?\ ?-))))
2575 (viper-backward-char-carefully)
2576 (setq prev-char (viper-char-at-pos 'backward))))
2579 (viper-forward-char-carefully))
2583 (defun viper-forward-word (arg)
2586 (viper-leave-region-active)
2587 (let ((val (viper-p-val arg))
2588 (com (viper-getcom arg)))
2589 (if com (viper-move-marker-locally 'viper-com-point (point)))
2590 (viper-forward-word-kernel val)
2592 (cond ((memq com (list ?c (- ?c)))
2593 (viper-separator-skipback-special 'twice viper-com-point))
2594 ;; Yank words including the whitespace, but not newline
2595 ((memq com (list ?y (- ?y)))
2596 (viper-separator-skipback-special nil viper-com-point))
2597 ((viper-dotable-command-p com)
2598 (viper-separator-skipback-special nil viper-com-point)))
2599 (viper-execute-com 'viper-forward-word val com)))))
2602 (defun viper-forward-Word (arg)
2603 "Forward word delimited by white characters."
2605 (viper-leave-region-active)
2606 (let ((val (viper-p-val arg))
2607 (com (viper-getcom arg)))
2608 (if com (viper-move-marker-locally 'viper-com-point (point)))
2610 (viper-skip-nonseparators 'forward)
2611 (viper-skip-separators t))
2613 (cond ((memq com (list ?c (- ?c)))
2614 (viper-separator-skipback-special 'twice viper-com-point))
2615 ;; Yank words including the whitespace, but not newline
2616 ((memq com (list ?y (- ?y)))
2617 (viper-separator-skipback-special nil viper-com-point))
2618 ((viper-dotable-command-p com)
2619 (viper-separator-skipback-special nil viper-com-point)))
2620 (viper-execute-com 'viper-forward-Word val com)))))
2623 ;; this is a bit different from Vi, but Vi's end of word
2624 ;; makes no sense whatsoever
2625 (defun viper-end-of-word-kernel ()
2626 (if (viper-end-of-word-p) (forward-char))
2627 (if (viper-looking-at-separator)
2628 (viper-skip-all-separators-forward))
2630 (cond ((viper-looking-at-alpha) (viper-skip-alpha-forward "_"))
2631 ((not (viper-looking-at-alphasep)) (viper-skip-nonalphasep-forward)))
2632 (viper-backward-char-carefully))
2634 (defun viper-end-of-word-p ()
2637 (cond ((viper-looking-at-alpha)
2639 (not (viper-looking-at-alpha)))
2640 ((not (viper-looking-at-alphasep))
2642 (viper-looking-at-alphasep))))))
2645 (defun viper-end-of-word (arg &optional careful)
2646 "Move point to end of current word."
2648 (viper-leave-region-active)
2649 (let ((val (viper-p-val arg))
2650 (com (viper-getcom arg)))
2651 (if com (viper-move-marker-locally 'viper-com-point (point)))
2652 (viper-loop val (viper-end-of-word-kernel))
2656 (viper-execute-com 'viper-end-of-word val com)))))
2658 (defun viper-end-of-Word (arg)
2659 "Forward to end of word delimited by white character."
2661 (viper-leave-region-active)
2662 (let ((val (viper-p-val arg))
2663 (com (viper-getcom arg)))
2664 (if com (viper-move-marker-locally 'viper-com-point (point)))
2666 (viper-end-of-word-kernel)
2667 (viper-skip-nonseparators 'forward)
2672 (viper-execute-com 'viper-end-of-Word val com)))))
2674 (defun viper-backward-word-kernel (val)
2676 (viper-backward-char-carefully)
2677 (cond ((viper-looking-at-alpha)
2678 (viper-skip-alpha-backward "_"))
2679 ((viper-looking-at-separator)
2681 (viper-skip-separators nil)
2682 (viper-backward-char-carefully)
2683 (cond ((viper-looking-at-alpha)
2684 (viper-skip-alpha-backward "_"))
2685 ((not (viper-looking-at-alphasep))
2686 (viper-skip-nonalphasep-backward))
2687 ((bobp)) ; could still be at separator, but at beg of buffer
2688 (t (forward-char))))
2689 ((not (viper-looking-at-alphasep))
2690 (viper-skip-nonalphasep-backward)))
2691 (setq val (1- val))))
2693 (defun viper-backward-word (arg)
2696 (viper-leave-region-active)
2697 (let ((val (viper-p-val arg))
2698 (com (viper-getcom arg)))
2701 (if (setq i (save-excursion (backward-char) (looking-at "\n")))
2703 (viper-move-marker-locally 'viper-com-point (point))
2704 (if i (forward-char))))
2705 (viper-backward-word-kernel val)
2706 (if com (viper-execute-com 'viper-backward-word val com))))
2708 (defun viper-backward-Word (arg)
2709 "Backward word delimited by white character."
2711 (viper-leave-region-active)
2712 (let ((val (viper-p-val arg))
2713 (com (viper-getcom arg)))
2716 (if (setq i (save-excursion (backward-char) (looking-at "\n")))
2718 (viper-move-marker-locally 'viper-com-point (point))
2719 (if i (forward-char))))
2721 (viper-skip-separators nil) ; nil means backward here
2722 (viper-skip-nonseparators 'backward))
2723 (if com (viper-execute-com 'viper-backward-Word val com))))
2729 (defun viper-beginning-of-line (arg)
2730 "Go to beginning of line."
2732 (viper-leave-region-active)
2733 (let ((val (viper-p-val arg))
2734 (com (viper-getcom arg)))
2735 (if com (viper-move-marker-locally 'viper-com-point (point)))
2736 (beginning-of-line val)
2737 (if com (viper-execute-com 'viper-beginning-of-line val com))))
2739 (defun viper-bol-and-skip-white (arg)
2740 "Beginning of line at first non-white character."
2742 (viper-leave-region-active)
2743 (let ((val (viper-p-val arg))
2744 (com (viper-getcom arg)))
2745 (if com (viper-move-marker-locally 'viper-com-point (point)))
2746 (forward-to-indentation (1- val))
2747 (if com (viper-execute-com 'viper-bol-and-skip-white val com))))
2749 (defun viper-goto-eol (arg)
2750 "Go to end of line."
2752 (viper-leave-region-active)
2753 (let ((val (viper-p-val arg))
2754 (com (viper-getcom arg)))
2755 (if com (viper-move-marker-locally 'viper-com-point (point)))
2757 (if com (viper-execute-com 'viper-goto-eol val com))
2758 (if viper-ex-style-motion
2759 (if (and (eolp) (not (bolp))
2760 ;; a fix for viper-change-to-eol
2761 (not (equal viper-current-state 'insert-state)))
2766 (defun viper-goto-col (arg)
2767 "Go to ARG's column."
2769 (viper-leave-region-active)
2770 (let ((val (viper-p-val arg))
2771 (com (viper-getcom arg))
2774 (viper-chars-in-region
2775 (viper-line-pos 'start) (viper-line-pos 'end)))
2776 (if com (viper-move-marker-locally 'viper-com-point (point)))
2778 (forward-char (1- (min line-len val)))
2779 (while (> (current-column) (1- val))
2781 (if com (viper-execute-com 'viper-goto-col val com))
2784 (if (> val (current-column)) (error "")))
2788 (defun viper-next-line (arg)
2791 (viper-leave-region-active)
2792 (let ((val (viper-p-val arg))
2793 (com (viper-getCom arg)))
2794 (if com (viper-move-marker-locally 'viper-com-point (point)))
2796 (if viper-ex-style-motion
2797 (if (and (eolp) (not (bolp))) (backward-char 1)))
2798 (setq this-command 'next-line)
2799 (if com (viper-execute-com 'viper-next-line val com))))
2801 (defun viper-next-line-at-bol (arg)
2802 "Next line at beginning of line."
2804 (viper-leave-region-active)
2807 (if (eobp) (error "Last line in buffer")))
2808 (let ((val (viper-p-val arg))
2809 (com (viper-getCom arg)))
2810 (if com (viper-move-marker-locally 'viper-com-point (point)))
2812 (back-to-indentation)
2813 (if com (viper-execute-com 'viper-next-line-at-bol val com))))
2815 (defun viper-previous-line (arg)
2816 "Go to previous line."
2818 (viper-leave-region-active)
2819 (let ((val (viper-p-val arg))
2820 (com (viper-getCom arg)))
2821 (if com (viper-move-marker-locally 'viper-com-point (point)))
2823 (if viper-ex-style-motion
2824 (if (and (eolp) (not (bolp))) (backward-char 1)))
2825 (setq this-command 'previous-line)
2826 (if com (viper-execute-com 'viper-previous-line val com))))
2829 (defun viper-previous-line-at-bol (arg)
2830 "Previous line at beginning of line."
2832 (viper-leave-region-active)
2835 (if (bobp) (error "First line in buffer")))
2836 (let ((val (viper-p-val arg))
2837 (com (viper-getCom arg)))
2838 (if com (viper-move-marker-locally 'viper-com-point (point)))
2839 (forward-line (- val))
2840 (back-to-indentation)
2841 (if com (viper-execute-com 'viper-previous-line val com))))
2843 (defun viper-change-to-eol (arg)
2844 "Change to end of line."
2846 (viper-goto-eol (cons arg ?c)))
2848 (defun viper-kill-line (arg)
2851 (viper-goto-eol (cons arg ?d)))
2853 (defun viper-erase-line (arg)
2856 (viper-beginning-of-line (cons arg ?d)))
2861 (defun viper-goto-line (arg)
2862 "Go to ARG's line. Without ARG go to end of buffer."
2864 (let ((val (viper-P-val arg))
2865 (com (viper-getCom arg)))
2866 (viper-move-marker-locally 'viper-com-point (point))
2867 (viper-deactivate-mark)
2870 (goto-char (point-max))
2871 (goto-char (point-min))
2872 (forward-line (1- val)))
2874 ;; positioning is done twice: before and after command execution
2875 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
2876 (back-to-indentation)
2878 (if com (viper-execute-com 'viper-goto-line val com))
2880 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
2881 (back-to-indentation)
2884 ;; Find ARG's occurrence of CHAR on the current line.
2885 ;; If FORWARD then search is forward, otherwise backward. OFFSET is used to
2886 ;; adjust point after search.
2887 (defun viper-find-char (arg char forward offset)
2888 (or (char-or-string-p char) (error ""))
2889 (let ((arg (if forward arg (- arg)))
2890 (cmd (if (eq viper-intermediate-command 'viper-repeat)
2892 (viper-array-to-string (this-command-keys))))
2898 ;; forward search begins here
2899 (if (eolp) (error "Command `%s': At end of line" cmd) (point))
2900 ;; forward search ends here
2901 (progn (end-of-line) (point)))
2903 ;; backward search begins from here
2905 (error "Command `%s': At beginning of line" cmd) (point))
2906 ;; backward search ends here
2907 (progn (beginning-of-line) (point))))
2908 ;; if arg > 0, point is forwarded before search.
2909 (if (> arg 0) (goto-char (1+ (point-min)))
2910 (goto-char (point-max)))
2911 (if (let ((case-fold-search nil))
2912 (search-forward (char-to-string char) nil 0 arg))
2913 (setq point (point))
2914 (error "Command `%s': `%c' not found" cmd char))))
2917 (backward-char (if offset 2 1))
2918 (forward-char (if offset 1 0)))))
2920 (defun viper-find-char-forward (arg)
2921 "Find char on the line.
2922 If called interactively read the char to find from the terminal, and if
2923 called from viper-repeat, the char last used is used. This behaviour is
2924 controlled by the sign of prefix numeric value."
2926 (let ((val (viper-p-val arg))
2927 (com (viper-getcom arg))
2928 (cmd-representation (nth 5 viper-d-com)))
2930 ;; this means that the function was called interactively
2931 (setq viper-f-char (read-char)
2934 ;; viper-repeat --- set viper-F-char from command-keys
2935 (setq viper-F-char (if (stringp cmd-representation)
2936 (viper-seq-last-elt cmd-representation)
2938 viper-f-char viper-F-char)
2940 (if com (viper-move-marker-locally 'viper-com-point (point)))
2942 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) t nil)
2946 (setq viper-F-char viper-f-char) ; set new viper-F-char
2948 (viper-execute-com 'viper-find-char-forward val com)))))
2950 (defun viper-goto-char-forward (arg)
2951 "Go up to char ARG forward on line."
2953 (let ((val (viper-p-val arg))
2954 (com (viper-getcom arg))
2955 (cmd-representation (nth 5 viper-d-com)))
2957 ;; this means that the function was called interactively
2958 (setq viper-f-char (read-char)
2961 ;; viper-repeat --- set viper-F-char from command-keys
2962 (setq viper-F-char (if (stringp cmd-representation)
2963 (viper-seq-last-elt cmd-representation)
2965 viper-f-char viper-F-char)
2967 (if com (viper-move-marker-locally 'viper-com-point (point)))
2969 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) t t)
2973 (setq viper-F-char viper-f-char) ; set new viper-F-char
2975 (viper-execute-com 'viper-goto-char-forward val com)))))
2977 (defun viper-find-char-backward (arg)
2978 "Find char ARG on line backward."
2980 (let ((val (viper-p-val arg))
2981 (com (viper-getcom arg))
2982 (cmd-representation (nth 5 viper-d-com)))
2984 ;; this means that the function was called interactively
2985 (setq viper-f-char (read-char)
2988 ;; viper-repeat --- set viper-F-char from command-keys
2989 (setq viper-F-char (if (stringp cmd-representation)
2990 (viper-seq-last-elt cmd-representation)
2992 viper-f-char viper-F-char)
2994 (if com (viper-move-marker-locally 'viper-com-point (point)))
2996 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) nil nil)
3000 (setq viper-F-char viper-f-char) ; set new viper-F-char
3001 (viper-execute-com 'viper-find-char-backward val com)))))
3003 (defun viper-goto-char-backward (arg)
3004 "Go up to char ARG backward on line."
3006 (let ((val (viper-p-val arg))
3007 (com (viper-getcom arg))
3008 (cmd-representation (nth 5 viper-d-com)))
3010 ;; this means that the function was called interactively
3011 (setq viper-f-char (read-char)
3014 ;; viper-repeat --- set viper-F-char from command-keys
3015 (setq viper-F-char (if (stringp cmd-representation)
3016 (viper-seq-last-elt cmd-representation)
3018 viper-f-char viper-F-char)
3020 (if com (viper-move-marker-locally 'viper-com-point (point)))
3022 val (if (> (viper-p-val arg) 0) viper-f-char viper-F-char) nil t)
3026 (setq viper-F-char viper-f-char) ; set new viper-F-char
3027 (viper-execute-com 'viper-goto-char-backward val com)))))
3029 (defun viper-repeat-find (arg)
3030 "Repeat previous find command."
3032 (let ((val (viper-p-val arg))
3033 (com (viper-getcom arg)))
3034 (viper-deactivate-mark)
3035 (if com (viper-move-marker-locally 'viper-com-point (point)))
3036 (viper-find-char val viper-f-char viper-f-forward viper-f-offset)
3039 (if viper-f-forward (forward-char))
3040 (viper-execute-com 'viper-repeat-find val com)))))
3042 (defun viper-repeat-find-opposite (arg)
3043 "Repeat previous find command in the opposite direction."
3045 (let ((val (viper-p-val arg))
3046 (com (viper-getcom arg)))
3047 (viper-deactivate-mark)
3048 (if com (viper-move-marker-locally 'viper-com-point (point)))
3049 (viper-find-char val viper-f-char (not viper-f-forward) viper-f-offset)
3052 (if viper-f-forward (forward-char))
3053 (viper-execute-com 'viper-repeat-find-opposite val com)))))
3056 ;; window scrolling etc.
3058 (defun viper-window-top (arg)
3059 "Go to home window line."
3061 (let ((val (viper-p-val arg))
3062 (com (viper-getCom arg)))
3063 (if com (viper-move-marker-locally 'viper-com-point (point)))
3065 (move-to-window-line (1- val))
3067 ;; positioning is done twice: before and after command execution
3068 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3069 (back-to-indentation)
3071 (if com (viper-execute-com 'viper-window-top val com))
3073 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3074 (back-to-indentation)
3077 (defun viper-window-middle (arg)
3078 "Go to middle window line."
3080 (let ((val (viper-p-val arg))
3081 (com (viper-getCom arg))
3083 (if com (viper-move-marker-locally 'viper-com-point (point)))
3085 (if (not (pos-visible-in-window-p (point-max)))
3086 (move-to-window-line (+ (/ (1- (window-height)) 2) (1- val)))
3087 (setq lines (count-lines (window-start) (point-max)))
3088 (move-to-window-line (+ (/ lines 2) (1- val))))
3090 ;; positioning is done twice: before and after command execution
3091 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3092 (back-to-indentation)
3094 (if com (viper-execute-com 'viper-window-middle val com))
3096 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3097 (back-to-indentation)
3100 (defun viper-window-bottom (arg)
3101 "Go to last window line."
3103 (let ((val (viper-p-val arg))
3104 (com (viper-getCom arg)))
3105 (if com (viper-move-marker-locally 'viper-com-point (point)))
3107 (move-to-window-line (- val))
3109 ;; positioning is done twice: before and after command execution
3110 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3111 (back-to-indentation)
3113 (if com (viper-execute-com 'viper-window-bottom val com))
3115 (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
3116 (back-to-indentation)
3119 (defun viper-line-to-top (arg)
3120 "Put current line on the home line."
3122 (recenter (1- arg)))
3124 (defun viper-line-to-middle (arg)
3125 "Put current line on the middle line."
3127 (recenter (+ (1- arg) (/ (1- (window-height)) 2))))
3129 (defun viper-line-to-bottom (arg)
3130 "Put current line on the last line."
3132 (recenter (- (window-height) (1+ arg))))
3134 ;; If point is within viper-search-scroll-threshold of window top or bottom,
3135 ;; scroll up or down 1/7 of window height, depending on whether we are at the
3136 ;; bottom or at the top of the window. This function is called by viper-search
3137 ;; (which is called from viper-search-forward/backward/next). If the value of
3138 ;; viper-search-scroll-threshold is negative - don't scroll.
3139 (defun viper-adjust-window ()
3140 (let ((win-height (if viper-emacs-p
3141 (1- (window-height)) ; adjust for modeline
3142 (window-displayed-height)))
3144 at-top-p at-bottom-p
3145 min-scroll direction)
3147 (move-to-window-line 0) ; top
3149 (<= (count-lines pt (point))
3150 viper-search-scroll-threshold))
3151 (move-to-window-line -1) ; bottom
3153 (<= (count-lines pt (point)) viper-search-scroll-threshold))
3155 (cond (at-top-p (setq min-scroll (1- viper-search-scroll-threshold)
3157 (at-bottom-p (setq min-scroll (1+ viper-search-scroll-threshold)
3161 (* (max min-scroll (/ win-height 7)) direction)))
3166 ;; must correct this to only match ( to ) etc. On the other hand
3167 ;; it is good that paren match gets confused, because that way you
3168 ;; catch _all_ imbalances.
3170 (defun viper-paren-match (arg)
3171 "Go to the matching parenthesis."
3173 (viper-leave-region-active)
3174 (let ((com (viper-getcom arg))
3175 (parse-sexp-ignore-comments viper-parse-sexp-ignore-comments)
3178 (if (or (> arg 99) (< arg 1))
3179 (error "Prefix must be between 1 and 99")
3181 (if (> (point-max) 80000)
3182 (* (/ (point-max) 100) arg)
3183 (/ (* (point-max) arg) 100)))
3184 (back-to-indentation))
3185 (let (beg-lim end-lim)
3186 (if (and (eolp) (not (bolp))) (forward-char -1))
3187 (if (not (looking-at "[][(){}]"))
3188 (setq anchor-point (point)))
3191 (setq beg-lim (point))
3193 (setq end-lim (point)))
3194 (cond ((re-search-forward "[][(){}]" end-lim t)
3196 ((re-search-backward "[][(){}]" beg-lim t))
3198 (error "No matching character on line"))))
3199 (cond ((looking-at "[\(\[{]")
3200 (if com (viper-move-marker-locally 'viper-com-point (point)))
3203 (viper-execute-com 'viper-paren-match nil com)
3208 (viper-move-marker-locally 'viper-com-point anchor-point)
3210 (viper-execute-com 'viper-paren-match nil com)
3212 ((looking-at "[])}]")
3214 (if com (viper-move-marker-locally 'viper-com-point (point)))
3216 (if com (viper-execute-com 'viper-paren-match nil com)))
3219 (defun viper-toggle-parse-sexp-ignore-comments ()
3221 (setq viper-parse-sexp-ignore-comments
3222 (not viper-parse-sexp-ignore-comments))
3224 "From now on, `%%' will %signore parentheses inside comment fields"
3225 (if viper-parse-sexp-ignore-comments "" "NOT "))))
3228 ;; sentence ,paragraph and heading
3230 (defun viper-forward-sentence (arg)
3234 (let ((val (viper-p-val arg))
3235 (com (viper-getcom arg)))
3236 (if com (viper-move-marker-locally 'viper-com-point (point)))
3237 (forward-sentence val)
3238 (if com (viper-execute-com 'viper-forward-sentence nil com))))
3240 (defun viper-backward-sentence (arg)
3241 "Backward sentence."
3244 (let ((val (viper-p-val arg))
3245 (com (viper-getcom arg)))
3246 (if com (viper-move-marker-locally 'viper-com-point (point)))
3247 (backward-sentence val)
3248 (if com (viper-execute-com 'viper-backward-sentence nil com))))
3250 (defun viper-forward-paragraph (arg)
3251 "Forward paragraph."
3254 (let ((val (viper-p-val arg))
3255 (com (viper-getCom arg)))
3256 (if com (viper-move-marker-locally 'viper-com-point (point)))
3257 (forward-paragraph val)
3261 (viper-execute-com 'viper-forward-paragraph nil com)))))
3263 (defun viper-backward-paragraph (arg)
3264 "Backward paragraph."
3267 (let ((val (viper-p-val arg))
3268 (com (viper-getCom arg)))
3269 (if com (viper-move-marker-locally 'viper-com-point (point)))
3270 (backward-paragraph val)
3274 (viper-execute-com 'viper-backward-paragraph nil com)
3275 (backward-char 1)))))
3277 ;; should be mode-specific etc.
3279 (defun viper-prev-heading (arg)
3281 (let ((val (viper-p-val arg))
3282 (com (viper-getCom arg)))
3283 (if com (viper-move-marker-locally 'viper-com-point (point)))
3284 (re-search-backward viper-heading-start nil t val)
3285 (goto-char (match-beginning 0))
3286 (if com (viper-execute-com 'viper-prev-heading nil com))))
3288 (defun viper-heading-end (arg)
3290 (let ((val (viper-p-val arg))
3291 (com (viper-getCom arg)))
3292 (if com (viper-move-marker-locally 'viper-com-point (point)))
3293 (re-search-forward viper-heading-end nil t val)
3294 (goto-char (match-beginning 0))
3295 (if com (viper-execute-com 'viper-heading-end nil com))))
3297 (defun viper-next-heading (arg)
3299 (let ((val (viper-p-val arg))
3300 (com (viper-getCom arg)))
3301 (if com (viper-move-marker-locally 'viper-com-point (point)))
3303 (re-search-forward viper-heading-start nil t val)
3304 (goto-char (match-beginning 0))
3305 (if com (viper-execute-com 'viper-next-heading nil com))))
3310 (defun viper-scroll-screen (arg)
3311 "Scroll to next screen."
3317 (setq arg (1- arg)))
3320 (setq arg (1+ arg))))
3324 (message "End of buffer")
3325 (goto-char (point-max)))
3326 (message "Beginning of buffer")
3327 (goto-char (point-min))))
3330 (defun viper-scroll-screen-back (arg)
3331 "Scroll to previous screen."
3333 (viper-scroll-screen (- arg)))
3335 (defun viper-scroll-down (arg)
3336 "Pull down half screen."
3340 (scroll-down (/ (window-height) 2))
3343 (message "Beginning of buffer")
3344 (goto-char (point-min)))))
3346 (defun viper-scroll-down-one (arg)
3347 "Scroll up one line."
3351 (defun viper-scroll-up (arg)
3352 "Pull up half screen."
3356 (scroll-up (/ (window-height) 2))
3359 (message "End of buffer")
3360 (goto-char (point-max)))))
3362 (defun viper-scroll-up-one (arg)
3363 "Scroll down one line."
3370 (defun viper-if-string (prompt)
3371 (if (memq viper-intermediate-command
3372 '(viper-command-argument viper-digit-argument viper-repeat))
3373 (setq viper-this-command-keys (this-command-keys)))
3374 (let ((s (viper-read-string-with-history
3377 'viper-search-history
3378 (car viper-search-history))))
3379 (if (not (string= s ""))
3380 (setq viper-s-string s))))
3383 (defun viper-toggle-search-style (arg)
3384 "Toggle the value of viper-case-fold-search/viper-re-search.
3385 Without prefix argument, will ask which search style to toggle. With prefix
3386 arg 1,toggles viper-case-fold-search; with arg 2 toggles viper-re-search.
3388 Although this function is bound to \\[viper-toggle-search-style], the most
3389 convenient way to use it is to bind `//' to the macro
3390 `1 M-x viper-toggle-search-style' and `///' to
3391 `2 M-x viper-toggle-search-style'. In this way, hitting `//' quickly will
3392 toggle case-fold-search and hitting `/' three times witth toggle regexp
3393 search. Macros are more convenient in this case because they don't affect
3394 the Emacs binding of `/'."
3397 (cond ((or (eq arg 1)
3399 (y-or-n-p (format "Search style: '%s'. Want '%s'? "
3400 (if viper-case-fold-search
3401 "case-insensitive" "case-sensitive")
3402 (if viper-case-fold-search
3404 "case-insensitive")))))
3405 (setq viper-case-fold-search (null viper-case-fold-search))
3406 (if viper-case-fold-search
3407 (setq msg "Search becomes case-insensitive")
3408 (setq msg "Search becomes case-sensitive")))
3411 (y-or-n-p (format "Search style: '%s'. Want '%s'? "
3413 "regexp-search" "vanilla-search")
3416 "regexp-search")))))
3417 (setq viper-re-search (null viper-re-search))
3419 (setq msg "Search becomes regexp-style")
3420 (setq msg "Search becomes vanilla-style")))
3422 (setq msg "Search style remains unchanged")))
3425 (defun viper-set-searchstyle-toggling-macros (unset)
3426 "Set the macros for toggling the search style in Viper's vi-state.
3427 The macro that toggles case sensitivity is bound to `//', and the one that
3428 toggles regexp search is bound to `///'.
3429 With a prefix argument, this function unsets the macros. "
3434 ;; toggle case sensitivity in search
3435 (viper-record-kbd-macro
3437 [1 (meta x) v i p e r - t o g g l e - s e a r c h - s t y l e return]
3439 ;; toggle regexp/vanila search
3440 (viper-record-kbd-macro
3442 [2 (meta x) v i p e r - t o g g l e - s e a r c h - s t y l e return]
3446 "// and /// now toggle case-sensitivity and regexp search")))
3447 (viper-unrecord-kbd-macro "//" 'vi-state)
3449 (viper-unrecord-kbd-macro "///" 'vi-state))))
3452 (defun viper-set-parsing-style-toggling-macro (unset)
3453 "Set `%%%' to be a macro that toggles whether comment fields should be parsed for matching parentheses.
3454 This is used in conjunction with the `%' command.
3456 With a prefix argument, unsets the macro."
3461 ;; Make %%% toggle parsing comments for matching parentheses
3462 (viper-record-kbd-macro
3464 [(meta x) v i p e r - t o g g l e - p a r s e - s e x p - i g n o r e - c o m m e n t s return]
3468 "%%%%%% now toggles whether comments should be parsed for matching parentheses")))
3469 (viper-unrecord-kbd-macro "%%%" 'vi-state))))
3472 (defun viper-set-emacs-state-searchstyle-macros (unset &optional arg-majormode)
3473 "Set the macros for toggling the search style in Viper's emacs-state.
3474 The macro that toggles case sensitivity is bound to `//', and the one that
3475 toggles regexp search is bound to `///'.
3476 With a prefix argument, this function unsets the macros.
3477 If the optional prefix argument is non-nil and specifies a valid major mode,
3478 this sets the macros only in the macros in that major mode. Otherwise,
3479 the macros are set in the current major mode.
3480 \(When unsetting the macros, the second argument has no effect.\)"
3485 ;; toggle case sensitivity in search
3486 (viper-record-kbd-macro
3488 [1 (meta x) v i p e r - t o g g l e - s e a r c h - s t y l e return]
3489 (or arg-majormode major-mode))
3490 ;; toggle regexp/vanila search
3491 (viper-record-kbd-macro
3493 [2 (meta x) v i p e r - t o g g l e - s e a r c h - s t y l e return]
3494 (or arg-majormode major-mode))
3497 "// and /// now toggle case-sensitivity and regexp search.")))
3498 (viper-unrecord-kbd-macro "//" 'emacs-state)
3500 (viper-unrecord-kbd-macro "///" 'emacs-state))))
3503 (defun viper-search-forward (arg)
3504 "Search a string forward.
3505 ARG is used to find the ARG's occurrence of the string.
3506 Null string will repeat previous search."
3508 (let ((val (viper-P-val arg))
3509 (com (viper-getcom arg))
3510 (old-str viper-s-string))
3511 (setq viper-s-forward t)
3512 (viper-if-string "/")
3513 ;; this is not used at present, but may be used later
3514 (if (or (not (equal old-str viper-s-string))
3515 (not (markerp viper-local-search-start-marker))
3516 (not (marker-buffer viper-local-search-start-marker)))
3517 (setq viper-local-search-start-marker (point-marker)))
3518 (viper-search viper-s-string t val)
3521 (viper-move-marker-locally 'viper-com-point (mark t))
3522 (viper-execute-com 'viper-search-next val com)))))
3524 (defun viper-search-backward (arg)
3525 "Search a string backward.
3526 ARG is used to find the ARG's occurrence of the string.
3527 Null string will repeat previous search."
3529 (let ((val (viper-P-val arg))
3530 (com (viper-getcom arg))
3531 (old-str viper-s-string))
3532 (setq viper-s-forward nil)
3533 (viper-if-string "?")
3534 ;; this is not used at present, but may be used later
3535 (if (or (not (equal old-str viper-s-string))
3536 (not (markerp viper-local-search-start-marker))
3537 (not (marker-buffer viper-local-search-start-marker)))
3538 (setq viper-local-search-start-marker (point-marker)))
3539 (viper-search viper-s-string nil val)
3542 (viper-move-marker-locally 'viper-com-point (mark t))
3543 (viper-execute-com 'viper-search-next val com)))))
3546 ;; Search for COUNT's occurrence of STRING.
3547 ;; Search is forward if FORWARD is non-nil, otherwise backward.
3548 ;; INIT-POINT is the position where search is to start.
3550 ;; (STRING FORW COUNT &optional NO-OFFSET INIT-POINT LIMIT FAIL-IF-NOT-FOUND)
3551 (defun viper-search (string forward arg
3552 &optional no-offset init-point fail-if-not-found)
3553 (if (not (equal string ""))
3554 (let ((val (viper-p-val arg))
3555 (com (viper-getcom arg))
3556 (offset (not no-offset))
3557 (case-fold-search viper-case-fold-search)
3558 (start-point (or init-point (point))))
3559 (viper-deactivate-mark)
3563 (if offset (viper-forward-char-carefully))
3566 (re-search-forward string nil nil val)
3567 (re-search-backward string))
3568 (search-forward string nil nil val)
3569 (search-backward string))
3570 (if (not (equal start-point (point)))
3571 (push-mark start-point t)))
3573 (if (and (not fail-if-not-found) viper-search-wrap-around-t)
3575 (message "Search wrapped around BOTTOM of buffer")
3576 (goto-char (point-min))
3577 (viper-search string forward (cons 1 com) t start-point 'fail)
3578 ;; don't wait in macros
3579 (or executing-kbd-macro
3580 (memq viper-intermediate-command
3582 viper-digit-argument
3583 viper-command-argument))
3585 ;; delete the wrap-around message
3588 (goto-char start-point)
3589 (error "`%s': %s not found"
3591 (if viper-re-search "Pattern" "String"))
3597 (re-search-backward string nil nil val)
3598 (search-backward string nil nil val))
3599 (if (not (equal start-point (point)))
3600 (push-mark start-point t)))
3602 (if (and (not fail-if-not-found) viper-search-wrap-around-t)
3604 (message "Search wrapped around TOP of buffer")
3605 (goto-char (point-max))
3606 (viper-search string forward (cons 1 com) t start-point 'fail)
3607 ;; don't wait in macros
3608 (or executing-kbd-macro
3609 (memq viper-intermediate-command
3611 viper-digit-argument
3612 viper-command-argument))
3614 ;; delete the wrap-around message
3617 (goto-char start-point)
3618 (error "`%s': %s not found"
3620 (if viper-re-search "Pattern" "String"))
3622 ;; pull up or down if at top/bottom of window
3623 (viper-adjust-window)
3624 ;; highlight the result of search
3625 ;; don't wait and don't highlight in macros
3626 (or executing-kbd-macro
3627 (memq viper-intermediate-command
3628 '(viper-repeat viper-digit-argument viper-command-argument))
3629 (viper-flash-search-pattern))
3632 (defun viper-search-next (arg)
3633 "Repeat previous search."
3635 (let ((val (viper-p-val arg))
3636 (com (viper-getcom arg)))
3637 (if (null viper-s-string) (error viper-NoPrevSearch))
3638 (viper-search viper-s-string viper-s-forward arg)
3641 (viper-move-marker-locally 'viper-com-point (mark t))
3642 (viper-execute-com 'viper-search-next val com)))))
3644 (defun viper-search-Next (arg)
3645 "Repeat previous search in the reverse direction."
3647 (let ((val (viper-p-val arg))
3648 (com (viper-getcom arg)))
3649 (if (null viper-s-string) (error viper-NoPrevSearch))
3650 (viper-search viper-s-string (not viper-s-forward) arg)
3653 (viper-move-marker-locally 'viper-com-point (mark t))
3654 (viper-execute-com 'viper-search-Next val com)))))
3657 ;; Search contents of buffer defined by one of Viper's motion commands.
3658 ;; Repeatable via `n' and `N'.
3659 (defun viper-buffer-search-enable (&optional c)
3660 (cond (c (setq viper-buffer-search-char c))
3661 ((null viper-buffer-search-char)
3662 (setq viper-buffer-search-char ?g)))
3663 (define-key viper-vi-basic-map
3664 (char-to-string viper-buffer-search-char) 'viper-command-argument)
3665 (aset viper-exec-array viper-buffer-search-char 'viper-exec-buffer-search)
3666 (setq viper-prefix-commands
3667 (cons viper-buffer-search-char viper-prefix-commands)))
3669 ;; This is a Viper wraper for isearch-forward.
3670 (defun viper-isearch-forward (arg)
3671 "Do incremental search forward."
3673 ;; emacs bug workaround
3674 (if (listp arg) (setq arg (car arg)))
3675 (viper-exec-form-in-emacs (list 'isearch-forward arg)))
3677 ;; This is a Viper wraper for isearch-backward."
3678 (defun viper-isearch-backward (arg)
3679 "Do incremental search backward."
3681 ;; emacs bug workaround
3682 (if (listp arg) (setq arg (car arg)))
3683 (viper-exec-form-in-emacs (list 'isearch-backward arg)))
3686 ;; visiting and killing files, buffers
3688 (defun viper-switch-to-buffer ()
3689 "Switch to buffer in the current window."
3694 (format "Switch to buffer in this window \(%s\): "
3695 (buffer-name (other-buffer (current-buffer))))))
3696 (switch-to-buffer buffer)
3699 (defun viper-switch-to-buffer-other-window ()
3700 "Switch to buffer in another window."
3705 (format "Switch to buffer in another window \(%s\): "
3706 (buffer-name (other-buffer (current-buffer))))))
3707 (switch-to-buffer-other-window buffer)
3710 (defun viper-kill-buffer ()
3713 (let (buffer buffer-name)
3716 (format "Kill buffer \(%s\): "
3717 (buffer-name (current-buffer)))))
3719 (if (null buffer-name)
3721 (get-buffer buffer-name)))
3722 (if (null buffer) (error "`%s': No such buffer" buffer-name))
3723 (if (or (not (buffer-modified-p buffer))
3726 "Buffer `%s' is modified, are you sure you want to kill it? "
3728 (kill-buffer buffer)
3729 (error "Buffer not killed"))))
3735 (defsubst viper-yank (text)
3736 "Yank TEXT silently. This works correctly with Emacs's yank-pop command."
3738 (setq this-command 'yank))
3740 (defun viper-put-back (arg)
3741 "Put back after point/below line."
3743 (let ((val (viper-p-val arg))
3744 (text (if viper-use-register
3745 (cond ((viper-valid-register viper-use-register '(digit))
3747 (- viper-use-register ?1) 'do-not-rotate))
3748 ((viper-valid-register viper-use-register)
3749 (get-register (downcase viper-use-register)))
3750 (t (error viper-InvalidRegister viper-use-register)))
3753 (if viper-use-register
3754 (let ((reg viper-use-register))
3755 (setq viper-use-register nil)
3756 (error viper-EmptyRegister reg))
3758 (setq viper-use-register nil)
3759 (if (viper-end-with-a-newline-p text)
3765 (beginning-of-line))
3766 (if (not (eolp)) (viper-forward-char-carefully)))
3767 (set-marker (viper-mark-marker) (point) (current-buffer))
3768 (viper-set-destructive-command
3769 (list 'viper-put-back val nil viper-use-register nil nil))
3770 (viper-loop val (viper-yank text)))
3771 ;; Vi puts cursor on the last char when the yanked text doesn't contain a
3772 ;; newline; it leaves the cursor at the beginning when the text contains
3774 (if (viper-same-line (point) (mark))
3775 (or (= (point) (mark)) (viper-backward-char-carefully))
3776 (exchange-point-and-mark)
3778 (back-to-indentation)))
3779 (viper-deactivate-mark))
3781 (defun viper-Put-back (arg)
3782 "Put back at point/above line."
3784 (let ((val (viper-p-val arg))
3785 (text (if viper-use-register
3786 (cond ((viper-valid-register viper-use-register '(digit))
3788 (- viper-use-register ?1) 'do-not-rotate))
3789 ((viper-valid-register viper-use-register)
3790 (get-register (downcase viper-use-register)))
3791 (t (error viper-InvalidRegister viper-use-register)))
3794 (if viper-use-register
3795 (let ((reg viper-use-register))
3796 (setq viper-use-register nil)
3797 (error viper-EmptyRegister reg))
3799 (setq viper-use-register nil)
3800 (if (viper-end-with-a-newline-p text) (beginning-of-line))
3801 (viper-set-destructive-command
3802 (list 'viper-Put-back val nil viper-use-register nil nil))
3803 (set-marker (viper-mark-marker) (point) (current-buffer))
3804 (viper-loop val (viper-yank text)))
3805 ;; Vi puts cursor on the last char when the yanked text doesn't contain a
3806 ;; newline; it leaves the cursor at the beginning when the text contains
3808 (if (viper-same-line (point) (mark))
3809 (or (= (point) (mark)) (viper-backward-char-carefully))
3810 (exchange-point-and-mark)
3812 (back-to-indentation)))
3813 (viper-deactivate-mark))
3816 ;; Copy region to kill-ring.
3817 ;; If BEG and END do not belong to the same buffer, copy empty region.
3818 (defun viper-copy-region-as-kill (beg end)
3820 (copy-region-as-kill beg end)
3821 (error (copy-region-as-kill beg beg))))
3824 (defun viper-delete-char (arg)
3825 "Delete next character."
3827 (let ((val (viper-p-val arg))
3829 (viper-set-destructive-command
3830 (list 'viper-delete-char val nil nil nil nil))
3831 (if (and viper-ex-style-editing
3832 (> val (viper-chars-in-region (point) (viper-line-pos 'end))))
3833 (setq val (viper-chars-in-region (point) (viper-line-pos 'end))))
3834 (if (and viper-ex-style-motion (eolp))
3835 (if (bolp) (error "") (setq val 0))) ; not bol---simply back 1 ch
3837 (viper-forward-char-carefully val)
3838 (setq end-del-pos (point)))
3839 (if viper-use-register
3841 (cond ((viper-valid-register viper-use-register '((Letter)))
3842 (viper-append-to-register
3843 (downcase viper-use-register) (point) end-del-pos))
3844 ((viper-valid-register viper-use-register)
3846 viper-use-register (point) end-del-pos nil))
3847 (t (error viper-InvalidRegister viper-use-register)))
3848 (setq viper-use-register nil)))
3851 (if viper-ex-style-motion
3852 (if (and (eolp) (not (bolp))) (backward-char 1)))
3855 (defun viper-delete-backward-char (arg)
3856 "Delete previous character. On reaching beginning of line, stop and beep."
3858 (let ((val (viper-p-val arg))
3860 (viper-set-destructive-command
3861 (list 'viper-delete-backward-char val nil nil nil nil))
3863 viper-ex-style-editing
3864 (> val (viper-chars-in-region (viper-line-pos 'start) (point))))
3865 (setq val (viper-chars-in-region (viper-line-pos 'start) (point))))
3867 (viper-backward-char-carefully val)
3868 (setq end-del-pos (point)))
3869 (if viper-use-register
3871 (cond ((viper-valid-register viper-use-register '(Letter))
3872 (viper-append-to-register
3873 (downcase viper-use-register) end-del-pos (point)))
3874 ((viper-valid-register viper-use-register)
3876 viper-use-register end-del-pos (point) nil))
3877 (t (error viper-InvalidRegister viper-use-register)))
3878 (setq viper-use-register nil)))
3879 (if (and (bolp) viper-ex-style-editing)
3881 (delete-backward-char val t)))
3883 (defun viper-del-backward-char-in-insert ()
3884 "Delete 1 char backwards while in insert mode."
3886 (if (and viper-ex-style-editing (bolp))
3888 (delete-backward-char 1 t)))
3890 (defun viper-del-backward-char-in-replace ()
3891 "Delete one character in replace mode.
3892 If `viper-delete-backwards-in-replace' is t, then DEL key actually deletes
3893 charecters. If it is nil, then the cursor just moves backwards, similarly
3894 to Vi. The variable `viper-ex-style-editing', if t, doesn't let the
3895 cursor move past the beginning of line."
3897 (cond (viper-delete-backwards-in-replace
3899 (delete-backward-char 1 t))
3900 (viper-ex-style-editing
3905 (delete-backward-char 1 t))))
3906 (viper-ex-style-editing
3911 (backward-char 1))))
3917 (defun viper-join-lines (arg)
3918 "Join this line to next, if ARG is nil. Otherwise, join ARG lines."
3920 (let ((val (viper-P-val arg)))
3921 (viper-set-destructive-command
3922 (list 'viper-join-lines val nil nil nil nil))
3923 (viper-loop (if (null val) 1 (1- val))
3928 (delete-region (point) (1- (point)))
3930 ;; fixup-whitespace sometimes does not leave space
3931 ;; between objects, so we insert it as in Vi
3932 (or (looking-at " ")
3940 (defun viper-change (beg end)
3941 (if (markerp beg) (setq beg (marker-position beg)))
3942 (if (markerp end) (setq end (marker-position end)))
3943 ;; beg is sometimes (mark t), which may be nil
3944 (or beg (setq beg end))
3946 (viper-set-complex-command-for-undo)
3947 (if viper-use-register
3949 (copy-to-register viper-use-register beg end nil)
3950 (setq viper-use-register nil)))
3951 (viper-set-replace-overlay beg end)
3952 (setq last-command nil) ; separate repl text from prev kills
3954 (if (= (viper-replace-start) (point-max))
3955 (error "End of buffer"))
3957 (setq viper-last-replace-region
3958 (buffer-substring (viper-replace-start)
3959 (viper-replace-end)))
3961 ;; protect against error while inserting "@" and other disasters
3962 ;; (e.g., read-only buff)
3963 (condition-case conds
3964 (if (or viper-allow-multiline-replace-regions
3965 (viper-same-line (viper-replace-start)
3966 (viper-replace-end)))
3968 ;; tabs cause problems in replace, so untabify
3969 (goto-char (viper-replace-end))
3970 (insert-before-markers "@") ; put placeholder after the TAB
3971 (untabify (viper-replace-start) (point))
3972 ;; del @, don't put on kill ring
3973 (delete-backward-char 1)
3975 (viper-set-replace-overlay-glyphs
3976 viper-replace-region-start-delimiter
3977 viper-replace-region-end-delimiter)
3978 ;; this move takes care of the last posn in the overlay, which
3979 ;; has to be shifted because of insert. We can't simply insert
3980 ;; "$" before-markers because then overlay-start will shift the
3981 ;; beginning of the overlay in case we are replacing a single
3982 ;; character. This fixes the bug with `s' and `cl' commands.
3983 (viper-move-replace-overlay (viper-replace-start) (point))
3984 (goto-char (viper-replace-start))
3985 (viper-change-state-to-replace t))
3986 (kill-region (viper-replace-start)
3987 (viper-replace-end))
3988 (viper-hide-replace-overlay)
3989 (viper-change-state-to-insert))
3990 (error ;; make sure that the overlay doesn't stay.
3991 ;; go back to the original point
3992 (goto-char (viper-replace-start))
3993 (viper-hide-replace-overlay)
3994 (viper-message-conditions conds))))
3997 (defun viper-change-subr (beg end)
3998 ;; beg is sometimes (mark t), which may be nil
3999 (or beg (setq beg end))
4000 (if viper-use-register
4002 (copy-to-register viper-use-register beg end nil)
4003 (setq viper-use-register nil)))
4004 (kill-region beg end)
4005 (setq this-command 'viper-change)
4006 (viper-yank-last-insertion))
4008 (defun viper-toggle-case (arg)
4009 "Toggle character case."
4011 (let ((val (viper-p-val arg)) (c))
4012 (viper-set-destructive-command
4013 (list 'viper-toggle-case val nil nil nil nil))
4015 (setq c (following-char))
4017 (if (eq c (upcase c))
4018 (insert-char (downcase c) 1)
4019 (insert-char (upcase c) 1))
4020 (if (eolp) (backward-char 1))
4021 (setq val (1- val)))))
4026 (defun viper-query-replace ()
4028 If a null string is suplied as the string to be replaced,
4029 the query replace mode will toggle between string replace
4030 and regexp replace."
4033 (setq str (viper-read-string-with-history
4034 (if viper-re-query-replace "Query replace regexp: "
4037 'viper-replace1-history
4038 (car viper-replace1-history) ; default
4040 (if (string= str "")
4042 (setq viper-re-query-replace (not viper-re-query-replace))
4043 (message "Query replace mode changed to %s"
4044 (if viper-re-query-replace "regexp replace"
4046 (if viper-re-query-replace
4047 (query-replace-regexp
4049 (viper-read-string-with-history
4050 (format "Query replace regexp `%s' with: " str)
4052 'viper-replace1-history
4053 (car viper-replace1-history) ; default
4057 (viper-read-string-with-history
4058 (format "Query replace `%s' with: " str)
4060 'viper-replace1-history
4061 (car viper-replace1-history) ; default
4067 (defun viper-mark-beginning-of-buffer ()
4068 "Mark beginning of buffer."
4071 (goto-char (point-min))
4072 (exchange-point-and-mark)
4073 (message "Mark set at the beginning of buffer"))
4075 (defun viper-mark-end-of-buffer ()
4076 "Mark end of buffer."
4079 (goto-char (point-max))
4080 (exchange-point-and-mark)
4081 (message "Mark set at the end of buffer"))
4083 (defun viper-mark-point ()
4084 "Set mark at point of buffer."
4086 (let ((char (read-char)))
4087 (cond ((and (<= ?a char) (<= char ?z))
4088 (point-to-register (1+ (- char ?a))))
4089 ((= char ?<) (viper-mark-beginning-of-buffer))
4090 ((= char ?>) (viper-mark-end-of-buffer))
4091 ((= char ?.) (viper-set-mark-if-necessary))
4092 ((= char ?,) (viper-cycle-through-mark-ring))
4093 ((= char ?D) (mark-defun))
4097 ;; Algorithm: If first invocation of this command save mark on ring, goto
4098 ;; mark, M0, and pop the most recent elt from the mark ring into mark,
4099 ;; making it into the new mark, M1.
4100 ;; Push this mark back and set mark to the original point position, p1.
4101 ;; So, if you hit '' or `` then you can return to p1.
4103 ;; If repeated command, pop top elt from the ring into mark and
4104 ;; jump there. This forgets the position, p1, and puts M1 back into mark.
4105 ;; Then we save the current pos, which is M0, jump to M1 and pop M2 from
4106 ;; the ring into mark. Push M2 back on the ring and set mark to M0.
4108 (defun viper-cycle-through-mark-ring ()
4109 "Visit previous locations on the mark ring.
4110 One can use `` and '' to temporarily jump 1 step back."
4111 (let* ((sv-pt (point)))
4112 ;; if repeated `m,' command, pop the previously saved mark.
4113 ;; Prev saved mark is actually prev saved point. It is used if the
4114 ;; user types `` or '' and is discarded
4115 ;; from the mark ring by the next `m,' command.
4116 ;; In any case, go to the previous or previously saved mark.
4117 ;; Then push the current mark (popped off the ring) and set current
4118 ;; point to be the mark. Current pt as mark is discarded by the next
4120 (if (eq last-command 'viper-cycle-through-mark-ring)
4122 ;; save current mark if the first iteration
4123 (setq mark-ring (delete (viper-mark-marker) mark-ring))
4125 (push-mark (mark t) t)) )
4127 (set-mark-command 1)
4128 ;; don't duplicate mark on the ring
4129 (setq mark-ring (delete (viper-mark-marker) mark-ring))
4131 (viper-deactivate-mark)
4132 (setq this-command 'viper-cycle-through-mark-ring)
4136 (defun viper-goto-mark (arg)
4139 (let ((char (read-char))
4140 (com (viper-getcom arg)))
4141 (viper-goto-mark-subr char com nil)))
4143 (defun viper-goto-mark-and-skip-white (arg)
4144 "Go to mark and skip to first non-white character on line."
4146 (let ((char (read-char))
4147 (com (viper-getCom arg)))
4148 (viper-goto-mark-subr char com t)))
4150 (defun viper-goto-mark-subr (char com skip-white)
4153 (error "Empty buffer")
4155 (cond ((viper-valid-register char '(letter))
4156 (let* ((buff (current-buffer))
4157 (reg (1+ (- char ?a)))
4158 (text-marker (get-register reg)))
4159 (if com (viper-move-marker-locally 'viper-com-point (point)))
4160 (if (not (viper-valid-marker text-marker))
4161 (error viper-EmptyTextmarker char))
4162 (if (and (viper-same-line (point) viper-last-jump)
4163 (= (point) viper-last-jump-ignore))
4164 (push-mark viper-last-jump t)
4165 (push-mark nil t)) ; no msg
4166 (viper-register-to-point reg)
4167 (setq viper-last-jump (point-marker))
4169 (back-to-indentation)
4170 (setq viper-last-jump-ignore (point))))
4172 (if (equal buff (current-buffer))
4173 (viper-execute-com (if skip-white
4174 'viper-goto-mark-and-skip-white
4177 (switch-to-buffer buff)
4178 (goto-char viper-com-point)
4179 (viper-change-state-to-vi)
4181 ((and (not skip-white) (= char ?`))
4182 (if com (viper-move-marker-locally 'viper-com-point (point)))
4183 (if (and (viper-same-line (point) viper-last-jump)
4184 (= (point) viper-last-jump-ignore))
4185 (goto-char viper-last-jump))
4186 (if (null (mark t)) (error "Mark is not set in this buffer"))
4187 (if (= (point) (mark t)) (pop-mark))
4188 (exchange-point-and-mark)
4189 (setq viper-last-jump (point-marker)
4190 viper-last-jump-ignore 0)
4191 (if com (viper-execute-com 'viper-goto-mark nil com)))
4192 ((and skip-white (= char ?'))
4193 (if com (viper-move-marker-locally 'viper-com-point (point)))
4194 (if (and (viper-same-line (point) viper-last-jump)
4195 (= (point) viper-last-jump-ignore))
4196 (goto-char viper-last-jump))
4197 (if (= (point) (mark t)) (pop-mark))
4198 (exchange-point-and-mark)
4199 (setq viper-last-jump (point))
4200 (back-to-indentation)
4201 (setq viper-last-jump-ignore (point))
4202 (if com (viper-execute-com 'viper-goto-mark-and-skip-white nil com)))
4203 (t (error viper-InvalidTextmarker char))))
4205 (defun viper-insert-tab ()
4209 (defun viper-exchange-point-and-mark ()
4211 (exchange-point-and-mark)
4212 (back-to-indentation))
4214 ;; Input Mode Indentation
4216 ;; Returns t, if the string before point matches the regexp STR.
4217 (defsubst viper-looking-back (str)
4218 (and (save-excursion (re-search-backward str nil t))
4219 (= (point) (match-end 0))))
4222 (defun viper-forward-indent ()
4223 "Indent forward -- `C-t' in Vi."
4226 (indent-to (+ (current-column) viper-shift-width)))
4228 (defun viper-backward-indent ()
4229 "Backtab, C-d in VI"
4232 (let ((p (point)) (c (current-column)) bol (indent t))
4233 (if (viper-looking-back "[0^]")
4235 (if (eq ?^ (preceding-char))
4236 (setq viper-preserve-indent t))
4237 (delete-backward-char 1)
4243 (if (re-search-backward "[^ \t]" bol 1) (forward-char))
4244 (delete-region (point) p)
4246 (indent-to (- c viper-shift-width)))
4247 (if (or (bolp) (viper-looking-back "[^ \t]"))
4248 (setq viper-cted nil)))))
4250 (defun viper-autoindent ()
4251 "Auto Indentation, Vi-style."
4253 (let ((col (current-indentation)))
4254 (if abbrev-mode (expand-abbrev))
4255 (if viper-preserve-indent
4256 (setq viper-preserve-indent nil)
4257 (setq viper-current-indent col))
4258 ;; don't leave whitespace lines around
4259 (if (memq last-command
4261 viper-open-line viper-Open-line
4262 viper-replace-state-exit-cmd))
4263 (indent-to-left-margin))
4264 ;; use \n instead of newline, or else <Return> will move the insert point
4267 (if viper-auto-indent
4270 (if (and viper-electric-mode
4272 (memq major-mode '(fundamental-mode
4274 paragraph-indent-text-mode ))))
4275 (indent-according-to-mode)
4276 (indent-to viper-current-indent))
4281 ;; Viewing registers
4283 (defun viper-ket-function (arg)
4284 "Function called by \], the ket. View registers and call \]\]."
4286 (let ((reg (read-char)))
4287 (cond ((viper-valid-register reg '(letter Letter))
4288 (view-register (downcase reg)))
4289 ((viper-valid-register reg '(digit))
4290 (let ((text (current-kill (- reg ?1) 'do-not-rotate)))
4292 (set-buffer (get-buffer-create "*Output*"))
4293 (delete-region (point-min) (point-max))
4294 (insert (format "Register %c contains the string:\n" reg))
4296 (goto-char (point-min)))
4297 (display-buffer "*Output*")))
4299 (viper-next-heading arg))
4301 viper-InvalidRegister reg)))))
4303 (defun viper-brac-function (arg)
4304 "Function called by \[, the brac. View textmarkers and call \[\["
4306 (let ((reg (read-char)))
4308 (viper-prev-heading arg))
4310 (viper-heading-end arg))
4311 ((viper-valid-register reg '(letter))
4312 (let* ((val (get-register (1+ (- reg ?a))))
4314 (error viper-EmptyTextmarker reg)
4315 (marker-buffer val)))
4316 (pos (marker-position val))
4317 line-no text (s pos) (e pos))
4319 (set-buffer (get-buffer-create "*Output*"))
4320 (delete-region (point-min) (point-max))
4325 (setq line-no (1+ (count-lines (point-min) val)))
4328 (if (re-search-backward "[^ \t]" nil t)
4334 (if (re-search-forward "[^ \t]" nil t)
4338 (setq text (buffer-substring s e))
4339 (setq text (format "%s<%c>%s"
4340 (substring text 0 (- pos s))
4341 reg (substring text (- pos s)))))
4344 "Textmarker `%c' is in buffer `%s' at line %d.\n"
4345 reg (buffer-name buf) line-no))
4346 (insert (format "Here is some text around %c:\n\n %s"
4348 (insert (format viper-EmptyTextmarker reg)))
4349 (goto-char (point-min)))
4350 (display-buffer "*Output*")))
4351 (t (error viper-InvalidTextmarker reg)))))
4355 ;; commands in insertion mode
4357 (defun viper-delete-backward-word (arg)
4358 "Delete previous word."
4363 (delete-region (point) (mark t))
4367 (defun viper-set-expert-level (&optional dont-change-unless)
4368 "Sets the expert level for a Viper user.
4369 Can be called interactively to change (temporarily or permanently) the
4370 current expert level.
4372 The optional argument DONT-CHANGE-UNLESS, if not nil, says that
4373 the level should not be changed, unless its current value is
4374 meaningless (i.e., not one of 1,2,3,4,5).
4376 User level determines the setting of Viper variables that are most
4377 sensitive for VI-style look-and-feel."
4381 (if (not (natnump viper-expert-level)) (setq viper-expert-level 0))
4383 (save-window-excursion
4384 (delete-other-windows)
4385 ;; if 0 < viper-expert-level < viper-max-expert-level
4386 ;; & dont-change-unless = t -- use it; else ask
4387 (viper-ask-level dont-change-unless))
4389 (setq viper-always t
4390 viper-ex-style-motion t
4391 viper-ex-style-editing t
4392 viper-want-ctl-h-help nil)
4394 (cond ((eq viper-expert-level 1) ; novice or beginner
4395 (global-set-key ; in emacs-state
4397 (if (viper-window-display-p) 'viper-iconify 'suspend-emacs))
4398 (setq viper-no-multiple-ESC t
4400 viper-vi-style-in-minibuffer t
4401 viper-search-wrap-around-t t
4402 viper-electric-mode nil
4403 viper-want-emacs-keys-in-vi nil
4404 viper-want-emacs-keys-in-insert nil))
4406 ((and (> viper-expert-level 1) (< viper-expert-level 5))
4407 ;; intermediate to guru
4408 (setq viper-no-multiple-ESC (if (viper-window-display-p)
4410 viper-electric-mode t
4411 viper-want-emacs-keys-in-vi t
4412 viper-want-emacs-keys-in-insert (> viper-expert-level 2))
4414 (if (eq viper-expert-level 4) ; respect user's ex-style motion
4415 ; and viper-no-multiple-ESC
4418 viper-ex-style-editing
4419 (viper-standard-value 'viper-ex-style-editing)
4420 viper-ex-style-motion
4421 (viper-standard-value 'viper-ex-style-motion))
4422 (setq viper-ex-style-motion
4423 (viper-standard-value 'viper-ex-style-motion)
4424 viper-ex-style-editing
4425 (viper-standard-value 'viper-ex-style-editing)
4427 (viper-standard-value 'viper-re-search)
4428 viper-no-multiple-ESC
4429 (viper-standard-value 'viper-no-multiple-ESC)))))
4432 ;; Ideally, if 5 is selected, a buffer should pop up to let the
4433 ;; user toggle the values of variables.
4434 (t (setq-default viper-ex-style-editing
4435 (viper-standard-value 'viper-ex-style-editing)
4436 viper-ex-style-motion
4437 (viper-standard-value 'viper-ex-style-motion))
4438 (setq viper-want-ctl-h-help
4439 (viper-standard-value 'viper-want-ctl-h-help)
4441 (viper-standard-value 'viper-always)
4442 viper-no-multiple-ESC
4443 (viper-standard-value 'viper-no-multiple-ESC)
4444 viper-ex-style-motion
4445 (viper-standard-value 'viper-ex-style-motion)
4446 viper-ex-style-editing
4447 (viper-standard-value 'viper-ex-style-editing)
4449 (viper-standard-value 'viper-re-search)
4451 (viper-standard-value 'viper-electric-mode)
4452 viper-want-emacs-keys-in-vi
4453 (viper-standard-value 'viper-want-emacs-keys-in-vi)
4454 viper-want-emacs-keys-in-insert
4455 (viper-standard-value 'viper-want-emacs-keys-in-insert))))
4457 (viper-set-mode-vars-for viper-current-state)
4458 (if (or viper-always
4459 (and (> viper-expert-level 0) (> 5 viper-expert-level)))
4462 ;; Ask user expert level.
4463 (defun viper-ask-level (dont-change-unless)
4464 (let ((ask-buffer " *viper-ask-level*")
4465 level-changed repeated)
4466 (save-window-excursion
4467 (switch-to-buffer ask-buffer)
4469 (while (or (> viper-expert-level viper-max-expert-level)
4470 (< viper-expert-level 1)
4471 (null dont-change-unless))
4475 (message "Invalid user level")
4478 (setq dont-change-unless t
4481 Please specify your level of familiarity with the venomous VI PERil
4482 (and the VI Plan for Emacs Rescue).
4483 You can change it at any time by typing `M-x viper-set-expert-level RET'
4485 1 -- BEGINNER: Almost all Emacs features are suppressed.
4486 Feels almost like straight Vi. File name completion and
4487 command history in the minibuffer are thrown in as a bonus.
4488 To use Emacs productively, you must reach level 3 or higher.
4489 2 -- MASTER: C-c now has its standard Emacs meaning in Vi command state,
4490 so most Emacs commands can be used when Viper is in Vi state.
4491 Good progress---you are well on the way to level 3!
4492 3 -- GRAND MASTER: Like 3, but most Emacs commands are available also
4493 in Viper's insert state.
4494 4 -- GURU: Like 3, but user settings are respected for viper-no-multiple-ESC,
4495 viper-ex-style-motion, viper-ex-style-editing, and
4496 viper-re-search variables. Adjust these settings to your taste.
4497 5 -- WIZARD: Like 4, but user settings are also respected for viper-always,
4498 viper-electric-mode, viper-want-ctl-h-help, viper-want-emacs-keys-in-vi,
4499 and viper-want-emacs-keys-in-insert. Adjust these to your taste.
4501 Please, specify your level now: ")
4503 (setq viper-expert-level (- (viper-read-char-exclusive) ?0))
4506 ;; tell the user if level was changed
4510 (format "\n\n\n\n\n\t\tYou have selected user level %d"
4511 viper-expert-level))
4512 (if (y-or-n-p "Do you wish to make this change permanent? ")
4513 ;; save the setting for viper-expert-level
4516 (format "Saving user level %d ..." viper-expert-level)
4517 viper-custom-file-name))
4519 (bury-buffer) ; remove ask-buffer from screen
4529 ;; if ENFORCE-BUFFER is not nil, error if CHAR is a marker in another buffer
4530 (defun viper-register-to-point (char &optional enforce-buffer)
4531 "Like jump-to-register, but switches to another buffer in another window."
4532 (interactive "cViper register to point: ")
4533 (let ((val (get-register char)))
4535 ((and (fboundp 'frame-configuration-p)
4536 (frame-configuration-p val))
4537 (set-frame-configuration val))
4538 ((window-configuration-p val)
4539 (set-window-configuration val))
4540 ((viper-valid-marker val)
4541 (if (and enforce-buffer
4542 (not (equal (current-buffer) (marker-buffer val))))
4543 (error (concat viper-EmptyTextmarker " in this buffer")
4545 (pop-to-buffer (marker-buffer val))
4547 ((and (consp val) (eq (car val) 'file))
4548 (find-file (cdr val)))
4550 (error viper-EmptyTextmarker (1- (+ char ?a)))))))
4553 (defun viper-save-kill-buffer ()
4554 "Save then kill current buffer. "
4556 (if (< viper-expert-level 2)
4557 (save-buffers-kill-emacs)
4559 (kill-buffer (current-buffer))))
4565 (defun viper-submit-report ()
4566 "Submit bug report on Viper."
4568 (let ((reporter-prompt-for-summary-p t)
4569 (viper-device-type (viper-device-type))
4570 color-display-p frame-parameters
4571 minibuffer-emacs-face minibuffer-vi-face minibuffer-insert-face
4572 varlist salutation window-config)
4574 ;; If mode info is needed, add variable to `let' and then set it below,
4575 ;; like we did with color-display-p.
4576 (setq color-display-p (if (viper-window-display-p)
4577 (viper-color-display-p)
4579 minibuffer-vi-face (if (viper-has-face-support-p)
4580 (viper-get-face viper-minibuffer-vi-face)
4582 minibuffer-insert-face (if (viper-has-face-support-p)
4584 viper-minibuffer-insert-face)
4586 minibuffer-emacs-face (if (viper-has-face-support-p)
4588 viper-minibuffer-emacs-face)
4590 frame-parameters (if (fboundp 'frame-parameters)
4591 (frame-parameters (selected-frame))))
4593 (setq varlist (list 'viper-vi-minibuffer-minor-mode
4594 'viper-insert-minibuffer-minor-mode
4595 'viper-vi-intercept-minor-mode
4596 'viper-vi-local-user-minor-mode
4597 'viper-vi-kbd-minor-mode
4598 'viper-vi-global-user-minor-mode
4599 'viper-vi-state-modifier-minor-mode
4600 'viper-vi-diehard-minor-mode
4601 'viper-vi-basic-minor-mode
4602 'viper-replace-minor-mode
4603 'viper-insert-intercept-minor-mode
4604 'viper-insert-local-user-minor-mode
4605 'viper-insert-kbd-minor-mode
4606 'viper-insert-global-user-minor-mode
4607 'viper-insert-state-modifier-minor-mode
4608 'viper-insert-diehard-minor-mode
4609 'viper-insert-basic-minor-mode
4610 'viper-emacs-intercept-minor-mode
4611 'viper-emacs-local-user-minor-mode
4612 'viper-emacs-kbd-minor-mode
4613 'viper-emacs-global-user-minor-mode
4614 'viper-emacs-state-modifier-minor-mode
4615 'viper-automatic-iso-accents
4616 'viper-special-input-method
4617 'viper-want-emacs-keys-in-insert
4618 'viper-want-emacs-keys-in-vi
4619 'viper-keep-point-on-undo
4620 'viper-no-multiple-ESC
4621 'viper-electric-mode
4623 'viper-want-ctl-h-help
4624 'viper-ex-style-editing
4625 'viper-delete-backwards-in-replace
4626 'viper-vi-style-in-minibuffer
4627 'viper-vi-state-hook
4628 'viper-insert-state-hook
4629 'viper-replace-state-hook
4630 'viper-emacs-state-hook
4631 'ex-cycle-other-window
4632 'ex-cycle-through-non-files
4639 'minibuffer-insert-face
4640 'minibuffer-emacs-face
4643 Congratulations! You may have unearthed a bug in Viper!
4644 Please mail a concise, accurate summary of the problem to the address above.
4646 -------------------------------------------------------------------")
4647 (setq window-config (current-window-configuration))
4648 (with-output-to-temp-buffer " *viper-info*"
4649 (switch-to-buffer " *viper-info*")
4650 (delete-other-windows)
4652 PLEASE FOLLOW THESE PROCEDURES
4653 ------------------------------
4655 Before reporting a bug, please verify that it is related to Viper, and is
4656 not cause by other packages you are using.
4658 Don't report compilation warnings, unless you are certain that there is a
4659 problem. These warnings are normal and unavoidable.
4661 Please note that users should not modify variables and keymaps other than
4662 those advertised in the manual. Such `customization' is likely to crash
4663 Viper, as it would any other improperly customized Emacs package.
4665 If you are reporting an error message received while executing one of the
4666 Viper commands, type:
4668 M-x set-variable <Return> debug-on-error <Return> t <Return>
4670 Then reproduce the error. The above command will cause Emacs to produce a
4671 back trace of the execution that leads to the error. Please include this
4672 trace in your bug report.
4674 If you believe that one of Viper's commands goes into an infinite loop
4675 \(e.g., Emacs freezes\), type:
4677 M-x set-variable <Return> debug-on-quit <Return> t <Return>
4679 Then reproduce the problem. Wait for a few seconds, then type C-g to abort
4680 the current command. Include the resulting back trace in the bug report.
4682 Mail anyway (y or n)? ")
4683 (if (y-or-n-p "Mail anyway? ")
4685 (set-window-configuration window-config)
4686 (error "Bug report aborted")))
4689 (set-window-configuration window-config)
4691 (reporter-submit-bug-report "kifer@cs.sunysb.edu"
4694 nil 'delete-other-windows
4701 ;; Smoothes out the difference between Emacs' unread-command-events
4702 ;; and XEmacs unread-command-event. Arg is a character, an event, a list of
4703 ;; events or a sequence of keys.
4705 ;; Due to the way unread-command-events in Emacs (not XEmacs), a non-event
4706 ;; symbol in unread-command-events list may cause Emacs to turn this symbol
4707 ;; into an event. Below, we delete nil from event lists, since nil is the most
4708 ;; common symbol that might appear in this wrong context.
4709 (defun viper-set-unread-command-events (arg)
4712 unread-command-events
4714 (cond ((eventp arg) (list arg))
4717 (listify-key-sequence arg))
4719 "viper-set-unread-command-events: Invalid argument, %S"
4721 (if (not (eventp nil))
4722 (setq new-events (delq nil new-events)))
4723 (append new-events unread-command-events)))
4726 unread-command-events
4728 (cond ((viper-characterp arg) (list (character-to-event arg)))
4729 ((eventp arg) (list arg))
4730 ((stringp arg) (mapcar 'character-to-event arg))
4731 ((vectorp arg) (append arg nil)) ; turn into list
4732 ((listp arg) (viper-eventify-list-xemacs arg))
4734 "viper-set-unread-command-events: Invalid argument, %S" arg)))
4735 unread-command-events))))
4737 ;; list is assumed to be a list of events of characters
4738 (defun viper-eventify-list-xemacs (lis)
4740 (function (lambda (elt)
4741 (cond ((viper-characterp elt) (character-to-event elt))
4744 "viper-eventify-list-xemacs: can't convert to event, %S"
4750 ;;; viper-cmd.el ends here