| 1 | ;;; viper.el --- A full-featured Vi emulator for GNU Emacs and XEmacs, |
| 2 | ;; a VI Plan for Emacs Rescue, |
| 3 | ;; and a venomous VI PERil. |
| 4 | ;; Viper Is also a Package for Emacs Rebels. |
| 5 | |
| 6 | ;; Copyright (C) 1994, 95, 96, 97, 98, 99, 2000, 01, 02 Free Software Foundation, Inc. |
| 7 | |
| 8 | ;; Author: Michael Kifer <kifer@cs.stonybrook.edu> |
| 9 | ;; Keywords: emulations |
| 10 | |
| 11 | (defconst viper-version "3.11.2 of January 4, 2002" |
| 12 | "The current version of Viper") |
| 13 | |
| 14 | ;; This file is part of GNU Emacs. |
| 15 | |
| 16 | ;; GNU Emacs is free software; you can redistribute it and/or modify |
| 17 | ;; it under the terms of the GNU General Public License as published by |
| 18 | ;; the Free Software Foundation; either version 2, or (at your option) |
| 19 | ;; any later version. |
| 20 | |
| 21 | ;; GNU Emacs is distributed in the hope that it will be useful, |
| 22 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 23 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 24 | ;; GNU General Public License for more details. |
| 25 | |
| 26 | ;; You should have received a copy of the GNU General Public License |
| 27 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
| 28 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
| 29 | ;; Boston, MA 02111-1307, USA. |
| 30 | |
| 31 | ;;; Commentary: |
| 32 | |
| 33 | ;; Viper is a full-featured Vi emulator for Emacs and XEmacs. It emulates and |
| 34 | ;; improves upon the standard features of Vi and, at the same time, allows |
| 35 | ;; full access to all Emacs facilities. Viper supports multiple undo, |
| 36 | ;; file name completion, command, file, and search history and it extends |
| 37 | ;; Vi in many other ways. Viper is highly customizable through the various |
| 38 | ;; hooks, user variables, and keymaps. It is implemented as a collection |
| 39 | ;; of minor modes and it is designed to provide full access to all Emacs |
| 40 | ;; major and minor modes. |
| 41 | ;; |
| 42 | ;;; History: |
| 43 | ;; |
| 44 | ;; Viper is a new name for a package formerly known as VIP-19, |
| 45 | ;; which was a successor of VIP version 3.5 by Masahiko Sato |
| 46 | ;; <ms@sail.stanford.edu> and VIP version 4.2 by Aamod Sane |
| 47 | ;; <sane@cs.uiuc.edu>. Some ideas from vip 4.4.2 by Aamod Sane |
| 48 | ;; were also shamelessly plagiarized. |
| 49 | ;; |
| 50 | ;; Viper maintains some degree of compatibility with these older |
| 51 | ;; packages. See the documentation for customization. |
| 52 | ;; |
| 53 | ;; The main difference between Viper and these older packages are: |
| 54 | ;; |
| 55 | ;; 1. Viper emulates Vi at several levels, from almost complete conformity |
| 56 | ;; to a rather loose Vi-compliance. |
| 57 | ;; |
| 58 | ;; 2. Viper provides full access to all major and minor modes of Emacs |
| 59 | ;; without the need to type extra keys. |
| 60 | ;; The older versions of VIP (and other Vi emulators) do not work with |
| 61 | ;; some major and minor modes. |
| 62 | ;; |
| 63 | ;; 3. Viper supports vi-style undo. |
| 64 | ;; |
| 65 | ;; 4. Viper fully emulates (and improves upon) vi's replacement mode. |
| 66 | ;; |
| 67 | ;; 5. Viper has a better interface to ex, including command, variable, and |
| 68 | ;; file name completion. |
| 69 | ;; |
| 70 | ;; 6. Viper uses native Emacs history and completion features; it doesn't |
| 71 | ;; rely on other packages (such as gmhist.el and completer.el) to provide |
| 72 | ;; these features. |
| 73 | ;; |
| 74 | ;; 7. Viper supports Vi-style editing in the minibuffer, by allowing the |
| 75 | ;; user to switch from Insert state to Vi state to Replace state, etc. |
| 76 | ;; |
| 77 | ;; 8. Viper keeps history of recently inserted pieces of text and recently |
| 78 | ;; executed Vi-style destructive commands, such as `i', `d', etc. |
| 79 | ;; These pieces of text can be inserted in later insertion commands; |
| 80 | ;; the previous destructive commands can be re-executed. |
| 81 | ;; |
| 82 | ;; 9. Viper has Vi-style keyboard macros, which enhances the similar |
| 83 | ;; facility in the original Vi. |
| 84 | ;; First, one can execute any Emacs command while defining a |
| 85 | ;; macro, not just the Vi commands. Second, macros are defined in a |
| 86 | ;; WYSYWYG mode, using an interface to Emacs' WYSIWYG style of defining |
| 87 | ;; macros. Third, in Viper, one can define macros that are specific to |
| 88 | ;; a given buffer, a given major mode, or macros defined for all buffers. |
| 89 | ;; The same macro name can have several different definitions: |
| 90 | ;; one global, several definitions for various major modes, and |
| 91 | ;; definitions for specific buffers. |
| 92 | ;; Buffer-specific definitions override mode-specific |
| 93 | ;; definitions, which, in turn, override global definitions. |
| 94 | ;; |
| 95 | ;; |
| 96 | ;;; Installation: |
| 97 | ;; ------------- |
| 98 | ;; |
| 99 | ;; (require 'viper) |
| 100 | ;; |
| 101 | |
| 102 | ;;; Acknowledgements: |
| 103 | ;; ----------------- |
| 104 | ;; Bug reports and ideas contributed by many users have helped |
| 105 | ;; improve Viper and the various versions of VIP. |
| 106 | ;; See the on-line manual for a complete list of contributors. |
| 107 | ;; |
| 108 | ;; |
| 109 | ;;; Notes: |
| 110 | ;; |
| 111 | ;; 1. Major modes. |
| 112 | ;; In most cases, Viper handles major modes correctly, i.e., they come up |
| 113 | ;; in the right state (either vi-state or emacs-state). For instance, text |
| 114 | ;; files come up in vi-state, while, say, Dired appears in emacs-state by |
| 115 | ;; default. |
| 116 | ;; However, some modes do not appear in the right mode in the beginning, |
| 117 | ;; usually because they neglect to follow Emacs conventions (e.g., they don't |
| 118 | ;; use kill-all-local-variables when they start). Some major modes |
| 119 | ;; may fail to come up in emacs-state if they call hooks, such as |
| 120 | ;; text-hook, for no good reason. |
| 121 | ;; |
| 122 | ;; As an immediate solution, you can hit C-z to bring about the right mode. |
| 123 | ;; An interim solution is to add an appropriate hook to the mode like this: |
| 124 | ;; |
| 125 | ;; (add-hook 'your-favorite-mode 'viper-mode) |
| 126 | ;; or |
| 127 | ;; (add-hook 'your-favorite-mode 'viper-change-state-to-emacs) |
| 128 | ;; |
| 129 | ;; whichever applies. The right thing to do, however, is to complain to the |
| 130 | ;; author of the respective package. (Sometimes they also neglect to equip |
| 131 | ;; their modes with hooks, which is one more reason for complaining.) |
| 132 | ;; |
| 133 | ;; 2. Keymap handling |
| 134 | ;; Each Viper state (insert, vi, replace) is implemented as a collection of |
| 135 | ;; several minor modes, each with its own keymap. |
| 136 | ;; |
| 137 | ;; Viper's Vi state consists of seven minor modes: |
| 138 | ;; |
| 139 | ;; viper-vi-intercept-minor-mode |
| 140 | ;; viper-vi-local-user-minor-mode |
| 141 | ;; viper-vi-global-user-minor-mode |
| 142 | ;; viper-vi-kbd-minor-mode |
| 143 | ;; viper-vi-state-modifier-minor-mode |
| 144 | ;; viper-vi-diehard-minor-mode |
| 145 | ;; viper-vi-basic-minor-mode |
| 146 | ;; |
| 147 | ;; Bindings done to the keymap of the first mode overshadow those done to |
| 148 | ;; the second, which, in turn, overshadows those done to the third, etc. |
| 149 | ;; |
| 150 | ;; The last viper-vi-basic-minor-mode contains most of the usual Vi bindings |
| 151 | ;; in its edit mode. This mode provides access to all Emacs facilities. |
| 152 | ;; Novice users, however, may want to set their viper-expert-level to 1 |
| 153 | ;; in their .viper file. This will enable viper-vi-diehard-minor-mode. This |
| 154 | ;; minor mode's bindings make Viper simulate the usual Vi very closely. |
| 155 | ;; For instance, C-c will not have its standard Emacs binding |
| 156 | ;; and so many of the goodies of Emacs are not available. |
| 157 | ;; |
| 158 | ;; A skilled user should set viper-expert-level to at least 3. This will |
| 159 | ;; enable `C-c' and many Emacs facilities will become available. |
| 160 | ;; In this case, viper-vi-diehard-minor-mode is inactive. |
| 161 | ;; |
| 162 | ;; Viper gurus should have at least |
| 163 | ;; (setq viper-expert-level 4) |
| 164 | ;; in their ~/.viper files. This will unsuppress all Emacs keys that are not |
| 165 | ;; essential for VI-style editing. |
| 166 | ;; Pick-and-choose users may want to put |
| 167 | ;; (setq viper-expert-level 5) |
| 168 | ;; in ~/.viper. Viper will then leave it up to the user to set the variables |
| 169 | ;; viper-want-* See viper-set-expert-level for details. |
| 170 | ;; |
| 171 | ;; The very first minor mode, viper-vi-intercept-minor-mode, is of no |
| 172 | ;; concern for the user. It is needed to bind Viper's vital keys, such as |
| 173 | ;; ESC and C-z. |
| 174 | ;; |
| 175 | ;; The second mode, viper-vi-local-user-minor-mode, usually has an |
| 176 | ;; empty keymap. However, the user can set bindings in this keymap, which |
| 177 | ;; will overshadow the corresponding bindings in the other two minor |
| 178 | ;; modes. This is useful, for example, for setting up ZZ in gnus, |
| 179 | ;; rmail, mh-e, etc., to send message instead of saving it in a file. |
| 180 | ;; Likewise, in Dired mode, you may want to bind ZN and ZP to commands |
| 181 | ;; that would visit the next or the previous file in the Dired buffer. |
| 182 | ;; Setting local keys is tricky, so don't do it directly. Instead, use |
| 183 | ;; viper-add-local-keys function (see its doc). |
| 184 | ;; |
| 185 | ;; The third minor mode, viper-vi-global-user-minor-mode, is also intended |
| 186 | ;; for the users but, unlike viper-vi-local-user-minor-mode, its key |
| 187 | ;; bindings are seen in all Viper buffers. This mode keys can be done |
| 188 | ;; with define-key command. |
| 189 | ;; |
| 190 | ;; The fourth minor mode, viper-vi-kbd-minor-mode, is used by keyboard |
| 191 | ;; macros. Users are NOT supposed to modify this keymap directly. |
| 192 | ;; |
| 193 | ;; The fifth mode, viper-vi-state-modifier-minor-mode, can be used to set |
| 194 | ;; key bindings that are visible in some major modes but not in others. |
| 195 | ;; |
| 196 | ;; Users are allowed to modify keymaps that belong to |
| 197 | ;; viper-vi-local-user-minor-mode, viper-vi-global-user-minor-mode, |
| 198 | ;; and viper-vi-state-modifier-minor-mode only. |
| 199 | ;; |
| 200 | ;; Viper's Insert state also has seven minor modes: |
| 201 | ;; |
| 202 | ;; viper-insert-intercept-minor-mode |
| 203 | ;; viper-insert-local-user-minor-mode |
| 204 | ;; viper-insert-global-user-minor-mode |
| 205 | ;; viper-insert-kbd-minor-mode |
| 206 | ;; viper-insert-state-modifier-minor-mode |
| 207 | ;; viper-insert-diehard-minor-mode |
| 208 | ;; viper-insert-basic-minor-mode |
| 209 | ;; |
| 210 | ;; As with VI's editing modes, the first mode, |
| 211 | ;; viper-insert-intercept-minor-mode is used to bind vital keys that are not |
| 212 | ;; to be changed by the user. |
| 213 | ;; |
| 214 | ;; The next mode, viper-insert-local-user-minor-mode, is used to customize |
| 215 | ;; bindings in the insert state of Viper. The third mode, |
| 216 | ;; viper-insert-global-user-minor-mode is like |
| 217 | ;; viper-insert-local-user-minor-mode, except that its bindings are seen in |
| 218 | ;; all Viper buffers. As with viper-vi-local-user-minor-mode, its bindings |
| 219 | ;; should be done via the function viper-add-local-keys. Bindings for |
| 220 | ;; viper-insert-global-user-minor-mode can be set with the define-key command. |
| 221 | ;; |
| 222 | ;; The next minor mode, viper-insert-kbd-minor-mode, |
| 223 | ;; is used for keyboard VI-style macros defined with :map!. |
| 224 | ;; |
| 225 | ;; The fifth minor mode, viper-insert-state-modifier-minor-mode, is like |
| 226 | ;; viper-vi-state-modifier-minor-mode, except that it is used in the Insert |
| 227 | ;; state; it can be used to modify keys in a mode-specific fashion. |
| 228 | ;; |
| 229 | ;; The minor mode viper-insert-diehard-minor-mode is in effect when |
| 230 | ;; the user wants a high degree of Vi compatibility (a bad idea, really!). |
| 231 | ;; The last minor mode, viper-insert-basic-minor-mode, is always in effect |
| 232 | ;; when Viper is in insert state. It binds a small number of keys needed for |
| 233 | ;; Viper's operation. |
| 234 | ;; |
| 235 | ;; Finally, Viper provides minor modes for overriding bindings set by Emacs |
| 236 | ;; modes when Viper is in Emacs state: |
| 237 | ;; |
| 238 | ;; viper-emacs-local-user-minor-mode |
| 239 | ;; viper-emacs-global-user-minor-mode |
| 240 | ;; viper-emacs-kbd-minor-mode |
| 241 | ;; viper-emacs-state-modifier-minor-mode |
| 242 | ;; |
| 243 | ;; These minor modes are in effect when Viper is in Emacs state. The keymap |
| 244 | ;; associated with viper-emacs-global-user-minor-mode, |
| 245 | ;; viper-emacs-global-user-map, overrides the global and local keymaps as |
| 246 | ;; well as the minor mode keymaps set by other modes. The keymap of |
| 247 | ;; viper-emacs-local-user-minor-mode, viper-emacs-local-user-map, overrides |
| 248 | ;; everything, but it is used on a per buffer basis. |
| 249 | ;; The keymap associated with viper-emacs-state-modifier-minor-mode |
| 250 | ;; overrides keys on a per-major-mode basis. The mode |
| 251 | ;; viper-emacs-kbd-minor-mode is used to define Vi-style macros in Emacs |
| 252 | ;; state. |
| 253 | ;; |
| 254 | ;; 3. There is also one minor mode that is used when Viper is in its |
| 255 | ;; replace-state (used for commands like cw, C, etc.). This mode is |
| 256 | ;; called |
| 257 | ;; |
| 258 | ;; viper-replace-minor-mode |
| 259 | ;; |
| 260 | ;; and its keymap is viper-replace-map. Replace minor mode is always |
| 261 | ;; used in conjunction with the minor modes for insert-state, and its |
| 262 | ;; keymap overshadows the keymaps for insert minor modes. |
| 263 | ;; |
| 264 | ;; 4. Defining buffer-local bindings in Vi and Insert modes. |
| 265 | ;; As mentioned before, sometimes, it is convenient to have |
| 266 | ;; buffer-specific of mode-specific key bindings in Vi and insert modes. |
| 267 | ;; Viper provides a special function, viper-add-local-keys, to do precisely |
| 268 | ;; this. For instance, is you need to add couple of mode-specific bindings |
| 269 | ;; to Insert mode, you can put |
| 270 | ;; |
| 271 | ;; (viper-add-local-keys 'insert-state '((key1 . func1) (key2 .func2))) |
| 272 | ;; |
| 273 | ;; somewhere in a hook of this major mode. If you put something like this |
| 274 | ;; in your own elisp function, this will define bindings specific to the |
| 275 | ;; buffer that was current at the time of the call to viper-add-local-keys. |
| 276 | ;; The only thing to make sure here is that the major mode of this buffer |
| 277 | ;; is written according to Emacs conventions, which includes a call to |
| 278 | ;; (kill-all-local-variables). See viper-add-local-keys for more details. |
| 279 | ;; |
| 280 | ;; |
| 281 | ;; TO DO (volunteers?): |
| 282 | ;; |
| 283 | ;; 1. Some of the code that is inherited from VIP-3.5 is rather |
| 284 | ;; convoluted. Instead of viper-command-argument, keymaps should bind the |
| 285 | ;; actual commands. E.g., "dw" should be bound to a generic command |
| 286 | ;; viper-delete that will delete things based on the value of |
| 287 | ;; last-command-char. This would greatly simplify the logic and the code. |
| 288 | ;; |
| 289 | ;; 2. Somebody should venture to write a customization package a la |
| 290 | ;; options.el that would allow the user to change values of variables |
| 291 | ;; that meet certain specs (e.g., match a regexp) and whose doc string |
| 292 | ;; starts with a '*'. Then, the user should be offered to save |
| 293 | ;; variables that were changed. This will make user's customization job |
| 294 | ;; much easier. |
| 295 | ;; |
| 296 | |
| 297 | ;;; Code: |
| 298 | |
| 299 | (require 'advice) |
| 300 | (require 'cl) |
| 301 | (require 'ring) |
| 302 | |
| 303 | ;; compiler pacifier |
| 304 | (defvar mark-even-if-inactive) |
| 305 | (defvar quail-mode) |
| 306 | (defvar viper-expert-level) |
| 307 | (defvar viper-mode-string) |
| 308 | (defvar viper-major-mode-modifier-list) |
| 309 | |
| 310 | ;; loading happens only in non-interactive compilation |
| 311 | ;; in order to spare non-viperized emacs from being viperized |
| 312 | (if noninteractive |
| 313 | (eval-when-compile |
| 314 | (let ((load-path (cons (expand-file-name ".") load-path))) |
| 315 | (or (featurep 'viper-init) |
| 316 | (load "viper-init.el" nil nil 'nosuffix)) |
| 317 | (or (featurep 'viper-cmd) |
| 318 | (load "viper-cmd.el" nil nil 'nosuffix)) |
| 319 | ))) |
| 320 | ;; end pacifier |
| 321 | |
| 322 | (require 'viper-init) |
| 323 | |
| 324 | ;; better be defined before Viper custom group. |
| 325 | (defvar viper-custom-file-name (convert-standard-filename "~/.viper") |
| 326 | "Viper customisation file. |
| 327 | If set by the user, this must be done _before_ Viper is loaded in `~/.emacs'.") |
| 328 | |
| 329 | (defgroup viper nil |
| 330 | "Vi emulation within Emacs. |
| 331 | NOTE: Viper customization should be saved in `viper-custom-file-name', which |
| 332 | defaults to `~/.viper'." |
| 333 | :prefix "viper-" |
| 334 | :group 'emulations) |
| 335 | |
| 336 | (require 'viper-cmd) |
| 337 | |
| 338 | (defgroup viper-misc nil |
| 339 | "Miscellaneous Viper customization." |
| 340 | :prefix "viper-" |
| 341 | :group 'viper) |
| 342 | |
| 343 | |
| 344 | (defcustom viper-always t |
| 345 | "Non-nil means, arrange for vi-state to be a default when appropriate. |
| 346 | This is different from `viper-mode' variable in that `viper-mode' determines |
| 347 | whether to use Viper in the first place, while `viper-always', if nil, lets |
| 348 | user decide when to invoke Viper in a major mode." |
| 349 | :type 'boolean |
| 350 | :tag "Always Invoke Viper" |
| 351 | :group 'viper-misc) |
| 352 | |
| 353 | ;; Non-viper variables that need to be saved in case the user decides to |
| 354 | ;; de-viperize emacs. |
| 355 | (defvar viper-saved-non-viper-variables nil) |
| 356 | |
| 357 | (defcustom viper-mode (cond (noninteractive nil) |
| 358 | (t 'ask)) |
| 359 | "To Viperize or not to Viperize. |
| 360 | If t, viperize emacs. If nil -- don't. If `ask', ask the user. |
| 361 | This variable is used primatily when Viper is being loaded. |
| 362 | |
| 363 | Must be set in `~/.emacs' before Viper is loaded. |
| 364 | DO NOT set this variable interactively, unless you are using the customization |
| 365 | widget." |
| 366 | :type '(choice (const nil) (const t) (const ask)) |
| 367 | :tag "Set Viper Mode on Loading" |
| 368 | :group 'viper-misc) |
| 369 | |
| 370 | (defcustom viper-vi-state-mode-list |
| 371 | '(fundamental-mode |
| 372 | makefile-mode |
| 373 | help-mode |
| 374 | |
| 375 | awk-mode |
| 376 | m4-mode |
| 377 | xrdb-mode |
| 378 | winmgr-mode |
| 379 | autoconf-mode |
| 380 | cvs-edit-mode |
| 381 | |
| 382 | html-mode html-helper-mode |
| 383 | emacs-lisp-mode lisp-mode lisp-interaction-mode |
| 384 | |
| 385 | jde-mode java-mode |
| 386 | cc-mode c-mode c++-mode objc-mode |
| 387 | fortran-mode f90-mode |
| 388 | basic-mode |
| 389 | bat-mode |
| 390 | asm-mode |
| 391 | prolog-mode |
| 392 | flora-mode |
| 393 | sql-mode |
| 394 | |
| 395 | text-mode indented-text-mode |
| 396 | tex-mode latex-mode bibtex-mode |
| 397 | ps-mode |
| 398 | |
| 399 | completion-list-mode |
| 400 | diff-mode |
| 401 | idl-mode |
| 402 | |
| 403 | perl-mode |
| 404 | cperl-mode |
| 405 | javascript-mode |
| 406 | tcl-mode |
| 407 | python-mode |
| 408 | |
| 409 | sh-mode ksh-mode csh-mode |
| 410 | |
| 411 | gnus-article-mode |
| 412 | mh-show-mode |
| 413 | ) |
| 414 | "Major modes that require Vi command state." |
| 415 | :type '(repeat symbol) |
| 416 | :group 'viper-misc) |
| 417 | |
| 418 | (defcustom viper-emacs-state-mode-list |
| 419 | '(custom-mode |
| 420 | |
| 421 | dired-mode |
| 422 | efs-mode |
| 423 | tar-mode |
| 424 | |
| 425 | mh-folder-mode |
| 426 | mail-mode |
| 427 | gnus-group-mode |
| 428 | gnus-summary-mode |
| 429 | |
| 430 | Info-mode |
| 431 | Buffer-menu-mode |
| 432 | compilation-mode |
| 433 | |
| 434 | view-mode |
| 435 | vm-mode |
| 436 | vm-summary-mode) |
| 437 | "*A list of major modes that should come up in Emacs state. |
| 438 | Normally, Viper would bring buffers up in Emacs state, unless the corresponding |
| 439 | major mode has been placed on `viper-vi-state-mode-list' or |
| 440 | `viper-insert-state-mode-list'. So, don't place a new mode on this list, |
| 441 | unless it is coming up in a wrong Viper state." |
| 442 | :type '(repeat symbol) |
| 443 | :group 'viper-misc) |
| 444 | |
| 445 | (defcustom viper-insert-state-mode-list |
| 446 | '(internal-ange-ftp-mode |
| 447 | comint-mode |
| 448 | inferior-emacs-lisp-mode |
| 449 | eshell-mode |
| 450 | shell-mode) |
| 451 | "*A list of major modes that should come up in Vi Insert state." |
| 452 | :type '(repeat symbol) |
| 453 | :group 'viper-misc) |
| 454 | |
| 455 | |
| 456 | ;; used to set viper-major-mode-modifier-list in defcustom |
| 457 | (defun viper-apply-major-mode-modifiers (&optional symbol value) |
| 458 | (if symbol |
| 459 | (set symbol value)) |
| 460 | (mapcar (lambda (triple) |
| 461 | (viper-modify-major-mode |
| 462 | (nth 0 triple) (nth 1 triple) (eval (nth 2 triple)))) |
| 463 | viper-major-mode-modifier-list)) |
| 464 | |
| 465 | ;; We change standard bindings in some major mode, making them slightly |
| 466 | ;; different than in "normal" vi/insert/emacs states |
| 467 | (defcustom viper-major-mode-modifier-list |
| 468 | '((help-mode emacs-state viper-slash-and-colon-map) |
| 469 | (comint-mode insert-state viper-comint-mode-modifier-map) |
| 470 | (comint-mode vi-state viper-comint-mode-modifier-map) |
| 471 | (shell-mode insert-state viper-comint-mode-modifier-map) |
| 472 | (inferior-emacs-lisp-mode insert-state viper-comint-mode-modifier-map) |
| 473 | (shell-mode vi-state viper-comint-mode-modifier-map) |
| 474 | (ange-ftp-shell-mode insert-state viper-comint-mode-modifier-map) |
| 475 | (ange-ftp-shell-mode vi-state viper-comint-mode-modifier-map) |
| 476 | (internal-ange-ftp-mode insert-state viper-comint-mode-modifier-map) |
| 477 | (internal-ange-ftp-mode vi-state viper-comint-mode-modifier-map) |
| 478 | (dired-mode emacs-state viper-dired-modifier-map) |
| 479 | (tar-mode emacs-state viper-slash-and-colon-map) |
| 480 | (mh-folder-mode emacs-state viper-slash-and-colon-map) |
| 481 | (gnus-group-mode emacs-state viper-slash-and-colon-map) |
| 482 | (gnus-summary-mode emacs-state viper-slash-and-colon-map) |
| 483 | (Info-mode emacs-state viper-slash-and-colon-map) |
| 484 | (Buffer-menu-mode emacs-state viper-slash-and-colon-map) |
| 485 | ) |
| 486 | "List specifying how to modify the various major modes to enable some Viperisms. |
| 487 | The list has the structure: ((mode viper-state keymap) (mode viper-state |
| 488 | keymap) ...). If `mode' is on the list, the `kemap' will be made active (on |
| 489 | the minor-mode-map-alist) in the specified viper state. |
| 490 | If you change this list, have to restart emacs for the change to take effect. |
| 491 | However, if you did the change through the customization widget, then emacs |
| 492 | needs to be restarted only if you deleted a triple mode-state-keymap from the |
| 493 | list. No need to restart emacs in case of insertion or modification of an |
| 494 | existing triple." |
| 495 | :type '(repeat |
| 496 | (list symbol |
| 497 | (choice (const emacs-state) |
| 498 | (const vi-state) |
| 499 | (const insert-state)) |
| 500 | symbol)) |
| 501 | :set 'viper-apply-major-mode-modifiers |
| 502 | :group 'viper-misc) |
| 503 | |
| 504 | |
| 505 | |
| 506 | \f |
| 507 | |
| 508 | ;;;###autoload |
| 509 | (defun toggle-viper-mode () |
| 510 | "Toggle Viper on/off. |
| 511 | If Viper is enabled, turn it off. Otherwise, turn it on." |
| 512 | (interactive) |
| 513 | (if (eq viper-mode t) |
| 514 | (viper-go-away) |
| 515 | (setq viper-mode nil) |
| 516 | (viper-mode))) |
| 517 | |
| 518 | ;;;###autoload |
| 519 | (defun viper-mode () |
| 520 | "Turn on Viper emulation of Vi." |
| 521 | (interactive) |
| 522 | (if (not noninteractive) |
| 523 | (progn |
| 524 | ;; if the user requested viper-mode explicitly |
| 525 | (if viper-mode |
| 526 | () |
| 527 | (setq viper-mode t) |
| 528 | (load-library "viper")) |
| 529 | |
| 530 | (if viper-first-time ; Important check. Prevents mix-up of startup |
| 531 | (progn ; and expert-level msgs when viper-mode recurses |
| 532 | (setq viper-first-time nil) |
| 533 | (setq viper-vi-state-cursor-color |
| 534 | (viper-get-cursor-color)) |
| 535 | (if (not viper-inhibit-startup-message) |
| 536 | (save-window-excursion |
| 537 | (setq viper-inhibit-startup-message t) |
| 538 | (delete-other-windows) |
| 539 | (switch-to-buffer "Viper Startup Message") |
| 540 | (erase-buffer) |
| 541 | (insert |
| 542 | (substitute-command-keys |
| 543 | "Viper Is a Package for Emacs Rebels, |
| 544 | a VI Plan for Emacs Rescue, and a venomous VI PERil. |
| 545 | |
| 546 | Incidentally, Viper emulates Vi under GNU Emacs 20 and XEmacs 20. |
| 547 | It supports all of what is good in Vi and Ex, while extending |
| 548 | and improving upon much of it. |
| 549 | |
| 550 | 1. Viper supports Vi at several levels. Level 1 is the closest to Vi, |
| 551 | level 5 provides the most flexibility to depart from many Vi conventions. |
| 552 | |
| 553 | You will be asked to specify your user level in a following screen. |
| 554 | |
| 555 | If you select user level 1 then the keys ^X, ^C, ^Z, and ^G will behave |
| 556 | as in VI, to smooth transition to Viper for the beginners. However, to |
| 557 | use Emacs productively, you are advised to reach user level 3 or higher. |
| 558 | |
| 559 | At user level 2 or higher, ^X and ^C have Emacs, not Vi, bindings; |
| 560 | ^Z toggles Vi/Emacs states; ^G is Emacs' keyboard-quit (like ^C in Vi). |
| 561 | |
| 562 | 2. Vi exit functions (e.g., :wq, ZZ) work on INDIVIDUAL files -- they |
| 563 | do not cause Emacs to quit, except at user level 1 (for a novice). |
| 564 | 3. ^X^C EXITS EMACS. |
| 565 | 4. Viper supports multiple undo: `u' will undo. Typing `.' will repeat |
| 566 | undo. Another `u' changes direction. |
| 567 | |
| 568 | 6. Emacs Meta key is `C-\\' (in all modes) or `\\ ESC' (in Vi command mode). |
| 569 | On a window system, the best way is to use the Meta-key on your keyboard. |
| 570 | 7. Try \\[keyboard-quit] and \\[abort-recursive-edit] repeatedly,if |
| 571 | something funny happens. This would abort the current editing command. |
| 572 | |
| 573 | For more information on Viper: |
| 574 | |
| 575 | a. Type `:help' in Vi command mode |
| 576 | b. Print Viper manual, found in ./etc/viper.dvi |
| 577 | c. Print the Quick Reference, found in ./etc/viperCard.dvi |
| 578 | |
| 579 | To submit a bug report or to contact the author, type :submitReport in Vi |
| 580 | command mode. To shoo Viper away and return to pure Emacs (horror!), type: |
| 581 | |
| 582 | M-x viper-go-away |
| 583 | |
| 584 | This startup message appears whenever you load Viper, unless you type `y' now." |
| 585 | )) |
| 586 | (goto-char (point-min)) |
| 587 | (if (y-or-n-p "Inhibit Viper startup message? ") |
| 588 | (viper-save-setting |
| 589 | 'viper-inhibit-startup-message |
| 590 | "Viper startup message inhibited" |
| 591 | viper-custom-file-name t)) |
| 592 | ;;(kill-buffer (current-buffer)) |
| 593 | (message |
| 594 | "The last message is in buffer `Viper Startup Message'") |
| 595 | (sit-for 4) |
| 596 | )) |
| 597 | (viper-set-expert-level 'dont-change-unless))) |
| 598 | |
| 599 | (if viper-xemacs-p |
| 600 | (make-variable-buffer-local 'bar-cursor)) |
| 601 | (if (eq major-mode 'viper-mode) |
| 602 | (setq major-mode 'fundamental-mode)) |
| 603 | |
| 604 | (or (memq major-mode viper-emacs-state-mode-list) ; don't switch to Vi |
| 605 | (memq major-mode viper-insert-state-mode-list) ; don't switch |
| 606 | (viper-change-state-to-vi))))) |
| 607 | |
| 608 | |
| 609 | ;; Apply a little heuristic to invoke vi state on major-modes |
| 610 | ;; that are not listed in viper-vi-state-mode-list |
| 611 | (defun this-major-mode-requires-vi-state (mode) |
| 612 | (cond ((memq mode viper-vi-state-mode-list) t) |
| 613 | ((memq mode viper-emacs-state-mode-list) nil) |
| 614 | ((memq mode viper-insert-state-mode-list) nil) |
| 615 | (t (and (eq (key-binding "a") 'self-insert-command) |
| 616 | (eq (key-binding " ") 'self-insert-command))))) |
| 617 | |
| 618 | \f |
| 619 | ;; This hook designed to enable Vi-style editing in comint-based modes." |
| 620 | (defun viper-comint-mode-hook () |
| 621 | (setq require-final-newline nil |
| 622 | viper-ex-style-editing nil |
| 623 | viper-ex-style-motion nil) |
| 624 | (viper-change-state-to-insert)) |
| 625 | |
| 626 | |
| 627 | ;; remove viper hooks from SYMBOL |
| 628 | (defun viper-remove-hooks (symbol) |
| 629 | (cond ((not (boundp symbol)) nil) |
| 630 | ((not (listp (eval symbol))) nil) |
| 631 | ((string-match "-hook" (symbol-name symbol)) |
| 632 | (remove-hook symbol 'viper-mode) |
| 633 | (remove-hook symbol 'viper-change-state-to-emacs) |
| 634 | (remove-hook symbol 'viper-change-state-to-insert) |
| 635 | (remove-hook symbol 'viper-change-state-to-vi) |
| 636 | ))) |
| 637 | |
| 638 | ;; Remove local value in all existing buffers |
| 639 | ;; This doesn't delocalize vars (which would have been desirable) |
| 640 | (defun viper-delocalize-var (symbol) |
| 641 | (mapcar (lambda (buf) (save-excursion |
| 642 | (set-buffer buf) |
| 643 | (kill-local-variable symbol))) |
| 644 | (buffer-list))) |
| 645 | |
| 646 | |
| 647 | (defun viper-go-away () |
| 648 | "De-Viperize Emacs. |
| 649 | This function tries to do as good a job as possible. However, it may undo some |
| 650 | user customization, unrelated to Viper. For instance, if the user advised |
| 651 | `read-file-name', `describe-key', and some others, then this advice will be |
| 652 | undone. |
| 653 | It also doesn't undo some Viper settings. For instance, `minor-mode-map-alist' |
| 654 | remains buffer-local." |
| 655 | (interactive) |
| 656 | |
| 657 | ;; restore non-viper vars |
| 658 | (setq-default |
| 659 | next-line-add-newlines |
| 660 | (viper-standard-value |
| 661 | 'next-line-add-newlines viper-saved-non-viper-variables) |
| 662 | require-final-newline |
| 663 | (viper-standard-value |
| 664 | 'require-final-newline viper-saved-non-viper-variables) |
| 665 | scroll-step |
| 666 | (viper-standard-value 'scroll-step viper-saved-non-viper-variables) |
| 667 | mode-line-buffer-identification |
| 668 | (viper-standard-value |
| 669 | 'mode-line-buffer-identification viper-saved-non-viper-variables) |
| 670 | global-mode-string |
| 671 | (delq 'viper-mode-string global-mode-string)) |
| 672 | |
| 673 | (if viper-emacs-p |
| 674 | (setq-default |
| 675 | mark-even-if-inactive |
| 676 | (viper-standard-value |
| 677 | 'mark-even-if-inactive viper-saved-non-viper-variables))) |
| 678 | |
| 679 | ;; Ideally, we would like to be able to de-localize local variables |
| 680 | (viper-delocalize-var 'minor-mode-map-alist) |
| 681 | (viper-delocalize-var 'require-final-newline) |
| 682 | (if viper-xemacs-p (viper-delocalize-var 'bar-cursor)) |
| 683 | |
| 684 | |
| 685 | ;; deactivate all advices done by Viper. |
| 686 | (ad-deactivate-regexp "viper-") |
| 687 | |
| 688 | (setq viper-mode nil) |
| 689 | |
| 690 | (viper-delocalize-var 'viper-vi-minibuffer-minor-mode) |
| 691 | (viper-delocalize-var 'viper-insert-minibuffer-minor-mode) |
| 692 | (viper-delocalize-var 'viper-vi-intercept-minor-mode) |
| 693 | (viper-delocalize-var 'viper-insert-intercept-minor-mode) |
| 694 | |
| 695 | (viper-delocalize-var 'viper-vi-local-user-minor-mode) |
| 696 | (viper-delocalize-var 'viper-vi-kbd-minor-mode) |
| 697 | (viper-delocalize-var 'viper-vi-global-user-minor-mode) |
| 698 | (viper-delocalize-var 'viper-vi-state-modifier-minor-mode) |
| 699 | (viper-delocalize-var 'viper-vi-diehard-minor-mode) |
| 700 | (viper-delocalize-var 'viper-vi-basic-minor-mode) |
| 701 | |
| 702 | (viper-delocalize-var 'viper-replace-minor-mode) |
| 703 | |
| 704 | (viper-delocalize-var 'viper-insert-local-user-minor-mode) |
| 705 | (viper-delocalize-var 'viper-insert-kbd-minor-mode) |
| 706 | (viper-delocalize-var 'viper-insert-global-user-minor-mode) |
| 707 | (viper-delocalize-var 'viper-insert-state-modifier-minor-mode) |
| 708 | (viper-delocalize-var 'viper-insert-diehard-minor-mode) |
| 709 | (viper-delocalize-var 'viper-insert-basic-minor-mode) |
| 710 | |
| 711 | (viper-delocalize-var 'viper-emacs-intercept-minor-mode) |
| 712 | (viper-delocalize-var 'viper-emacs-local-user-minor-mode) |
| 713 | (viper-delocalize-var 'viper-emacs-kbd-minor-mode) |
| 714 | (viper-delocalize-var 'viper-emacs-global-user-minor-mode) |
| 715 | (viper-delocalize-var 'viper-emacs-state-modifier-minor-mode) |
| 716 | |
| 717 | (viper-delocalize-var 'viper-current-state) |
| 718 | (viper-delocalize-var 'viper-mode-string) |
| 719 | |
| 720 | (setq-default viper-vi-minibuffer-minor-mode nil |
| 721 | viper-insert-minibuffer-minor-mode nil |
| 722 | viper-vi-intercept-minor-mode nil |
| 723 | viper-insert-intercept-minor-mode nil |
| 724 | |
| 725 | viper-vi-local-user-minor-mode nil |
| 726 | viper-vi-kbd-minor-mode nil |
| 727 | viper-vi-global-user-minor-mode nil |
| 728 | viper-vi-state-modifier-minor-mode nil |
| 729 | viper-vi-diehard-minor-mode nil |
| 730 | viper-vi-basic-minor-mode nil |
| 731 | |
| 732 | viper-replace-minor-mode nil |
| 733 | |
| 734 | viper-insert-local-user-minor-mode nil |
| 735 | viper-insert-kbd-minor-mode nil |
| 736 | viper-insert-global-user-minor-mode nil |
| 737 | viper-insert-state-modifier-minor-mode nil |
| 738 | viper-insert-diehard-minor-mode nil |
| 739 | viper-insert-basic-minor-mode nil |
| 740 | |
| 741 | viper-emacs-intercept-minor-mode nil |
| 742 | viper-emacs-local-user-minor-mode nil |
| 743 | viper-emacs-kbd-minor-mode nil |
| 744 | viper-emacs-global-user-minor-mode nil |
| 745 | viper-emacs-state-modifier-minor-mode nil |
| 746 | |
| 747 | viper-current-state 'emacs-state |
| 748 | viper-mode-string viper-emacs-state-id |
| 749 | ) |
| 750 | |
| 751 | ;; remove all hooks set by viper |
| 752 | (mapatoms 'viper-remove-hooks) |
| 753 | (remove-hook 'comint-mode-hook 'viper-comint-mode-hook) |
| 754 | (remove-hook 'minibuffer-setup-hook 'viper-minibuffer-setup-sentinel) |
| 755 | (remove-hook 'change-major-mode-hook 'viper-major-mode-change-sentinel) |
| 756 | |
| 757 | ;; unbind Viper mouse bindings |
| 758 | (viper-unbind-mouse-search-key) |
| 759 | (viper-unbind-mouse-insert-key) |
| 760 | ;; In emacs, we have to advice handle-switch-frame |
| 761 | ;; This advice is undone earlier, when all advices matchine "viper-" are |
| 762 | ;; deactivated. |
| 763 | (if viper-xemacs-p |
| 764 | (remove-hook 'mouse-leave-frame-hook 'viper-remember-current-frame)) |
| 765 | ) ; end viper-go-away |
| 766 | |
| 767 | |
| 768 | ;; list of buffers that just changed their major mode |
| 769 | ;; used in a hack that triggers vi command mode whenever needed |
| 770 | (defvar viper-new-major-mode-buffer-list nil) |
| 771 | |
| 772 | ;; set appropriate Viper state in buffers that changed major mode |
| 773 | (defun set-viper-state-in-major-mode () |
| 774 | (mapcar |
| 775 | (lambda (buf) |
| 776 | (if (viper-buffer-live-p buf) |
| 777 | (with-current-buffer buf |
| 778 | (cond ((and (this-major-mode-requires-vi-state major-mode) |
| 779 | (eq viper-current-state 'emacs-state)) |
| 780 | (viper-mode)) |
| 781 | ((memq major-mode viper-emacs-state-mode-list) |
| 782 | ;; not checking (eq viper-current-state 'emacs-state) |
| 783 | ;; because viper-current-state could have gotten it by |
| 784 | ;; default. We need viper-change-state-to-emacs here to have |
| 785 | ;; the keymaps take effect. |
| 786 | (viper-change-state-to-emacs)) |
| 787 | ((and (memq major-mode viper-insert-state-mode-list) |
| 788 | (not (eq viper-current-state 'insert-state))) |
| 789 | (viper-change-state-to-insert)) |
| 790 | )) ; with-current-buffer |
| 791 | )) ; function |
| 792 | viper-new-major-mode-buffer-list) |
| 793 | ;; clear the list of bufs that changed major mode |
| 794 | (setq viper-new-major-mode-buffer-list nil) |
| 795 | ;; change the global value of hook |
| 796 | (remove-hook 'viper-post-command-hooks 'set-viper-state-in-major-mode)) |
| 797 | |
| 798 | ;; sets up post-command-hook to turn viper-mode, if the current mode is |
| 799 | ;; fundamental |
| 800 | (defun viper-major-mode-change-sentinel () |
| 801 | (save-match-data |
| 802 | (or (string-match "\*Minibuf-" (buffer-name)) |
| 803 | (setq viper-new-major-mode-buffer-list |
| 804 | (cons (current-buffer) viper-new-major-mode-buffer-list)))) |
| 805 | ;; change the global value of hook |
| 806 | (add-hook 'viper-post-command-hooks 'set-viper-state-in-major-mode t)) |
| 807 | |
| 808 | |
| 809 | |
| 810 | ;; This sets major mode hooks to make them come up in vi-state. |
| 811 | (defun viper-set-hooks () |
| 812 | ;; It is of course a misnomer to call viper-mode a `major mode'. |
| 813 | ;; However, this has the effect that if the user didn't specify the |
| 814 | ;; default mode, new buffers that fall back on the default will come up |
| 815 | ;; in Fundamental Mode and Vi state. |
| 816 | ;; When viper-mode is executed in such a case, it will set the major mode |
| 817 | ;; back to fundamental-mode. |
| 818 | (if (eq default-major-mode 'fundamental-mode) |
| 819 | (setq default-major-mode 'viper-mode)) |
| 820 | |
| 821 | (add-hook 'change-major-mode-hook 'viper-major-mode-change-sentinel) |
| 822 | (add-hook 'find-file-hooks 'set-viper-state-in-major-mode) |
| 823 | |
| 824 | ;; keep this because many modes we don't know about use this hook |
| 825 | (defvar text-mode-hook) |
| 826 | (add-hook 'text-mode-hook 'viper-mode) |
| 827 | |
| 828 | (defvar emerge-startup-hook) |
| 829 | (add-hook 'emerge-startup-hook 'viper-change-state-to-emacs) |
| 830 | |
| 831 | ;; Zap bad bindings in flyspell-mouse-map, which prevent ESC from working |
| 832 | ;; over misspelled words (due to the overlay keymaps) |
| 833 | (defvar flyspell-mode-hook) |
| 834 | (add-hook 'flyspell-mode-hook |
| 835 | '(lambda () |
| 836 | (define-key flyspell-mouse-map viper-ESC-key nil))) |
| 837 | ;; if viper is started from .emacs, it might be impossible to get certain |
| 838 | ;; info about the display and windows until emacs initialization is complete |
| 839 | ;; So do it via the window-setup-hook |
| 840 | (add-hook 'window-setup-hook |
| 841 | '(lambda () |
| 842 | (setq viper-vi-state-cursor-color (viper-get-cursor-color)))) |
| 843 | |
| 844 | ;; Tell vc-diff to put *vc* in Vi mode |
| 845 | (if (featurep 'vc) |
| 846 | (defadvice vc-diff (after viper-vc-ad activate) |
| 847 | "Force Vi state in VC diff buffer." |
| 848 | (viper-change-state-to-vi)) |
| 849 | (eval-after-load |
| 850 | "vc" |
| 851 | '(defadvice vc-diff (after viper-vc-ad activate) |
| 852 | "Force Vi state in VC diff buffer." |
| 853 | (viper-change-state-to-vi)))) |
| 854 | |
| 855 | (eval-after-load |
| 856 | "emerge" |
| 857 | '(defadvice emerge-quit (after viper-emerge-advice activate) |
| 858 | "Run `viper-change-state-to-vi' after quitting emerge." |
| 859 | (viper-change-state-to-vi))) |
| 860 | ;; In case Emerge was loaded before Viper. |
| 861 | (defadvice emerge-quit (after viper-emerge-advice activate) |
| 862 | "Run `viper-change-state-to-vi' after quitting emerge." |
| 863 | (viper-change-state-to-vi)) |
| 864 | |
| 865 | ;; passwd.el sets up its own buffer, which turns up in Vi mode, |
| 866 | ;; thus overriding the local map. We don't need Vi mode here. |
| 867 | (eval-after-load |
| 868 | "passwd" |
| 869 | '(defadvice read-passwd-1 (before viper-passwd-ad activate) |
| 870 | "Switch to emacs state while reading password." |
| 871 | (viper-change-state-to-emacs))) |
| 872 | |
| 873 | ;; Emacs shell, ange-ftp, and comint-based modes |
| 874 | (add-hook 'comint-mode-hook 'viper-comint-mode-hook) ; comint |
| 875 | |
| 876 | (viper-set-emacs-state-searchstyle-macros nil 'dired-mode) ; dired |
| 877 | (viper-set-emacs-state-searchstyle-macros nil 'tar-mode) ; tar |
| 878 | (viper-set-emacs-state-searchstyle-macros nil 'mh-folder-mode) ; mhe |
| 879 | (viper-set-emacs-state-searchstyle-macros nil 'gnus-group-mode) ; gnus |
| 880 | (viper-set-emacs-state-searchstyle-macros nil 'gnus-summary-mode) |
| 881 | (viper-set-emacs-state-searchstyle-macros nil 'Info-mode) ; info |
| 882 | (viper-set-emacs-state-searchstyle-macros nil 'Buffer-menu-mode) ;buffer-menu |
| 883 | |
| 884 | ;; Modify major modes according to viper-major-mode-modifier-list |
| 885 | (viper-apply-major-mode-modifiers) |
| 886 | |
| 887 | ;; For RMAIL users. |
| 888 | ;; Put buf in Emacs state after edit. |
| 889 | (eval-after-load |
| 890 | "rmailedit" |
| 891 | '(defadvice rmail-cease-edit (after viper-rmail-advice activate) |
| 892 | "Switch to emacs state when done editing message." |
| 893 | (viper-change-state-to-emacs))) |
| 894 | ;; In case RMAIL was loaded before Viper. |
| 895 | (defadvice rmail-cease-edit (after viper-rmail-advice activate) |
| 896 | "Switch to emacs state when done editing message." |
| 897 | (viper-change-state-to-emacs)) |
| 898 | |
| 899 | ;; ISO accents |
| 900 | ;; Need to do it after loading iso-acc, or else this loading will wipe out |
| 901 | ;; the advice. |
| 902 | (eval-after-load |
| 903 | "iso-acc" |
| 904 | (defadvice iso-accents-mode (around viper-iso-accents-advice activate) |
| 905 | "Set viper-automatic-iso-accents to iso-accents-mode." |
| 906 | (let ((arg (ad-get-arg 0))) |
| 907 | ad-do-it |
| 908 | (setq viper-automatic-iso-accents |
| 909 | (if (eq viper-current-state 'vi-state) |
| 910 | (if arg |
| 911 | ;; if iso-accents-mode was called with positive arg, turn |
| 912 | ;; accents on |
| 913 | (> (prefix-numeric-value arg) 0) |
| 914 | ;; else: toggle viper-automatic-iso-accents |
| 915 | (not viper-automatic-iso-accents)) |
| 916 | ;; other states: accept what iso-accents-mode has done |
| 917 | iso-accents-mode)) |
| 918 | ;; turn off ISO accents in vi-state |
| 919 | (if (eq viper-current-state 'vi-state) |
| 920 | (viper-set-iso-accents-mode nil)) |
| 921 | (if (memq viper-current-state '(vi-state insert-state replace-state)) |
| 922 | (message "Viper ISO accents mode: %s" |
| 923 | (if viper-automatic-iso-accents "on" "off"))) |
| 924 | ))) |
| 925 | |
| 926 | ;; International input methods |
| 927 | (if viper-emacs-p |
| 928 | (eval-after-load "mule-cmds" |
| 929 | (progn |
| 930 | (defadvice inactivate-input-method (after viper-mule-advice activate) |
| 931 | "Set viper-special-input-method to disable intl. input methods." |
| 932 | (viper-inactivate-input-method-action)) |
| 933 | (defadvice activate-input-method (after viper-mule-advice activate) |
| 934 | "Set viper-special-input-method to enable intl. input methods." |
| 935 | (viper-activate-input-method-action)) |
| 936 | )) |
| 937 | ;; XEmacs Although these hooks exist in Emacs, they don't seem to be always |
| 938 | ;; called on input-method activation/deactivation, so we the above advise |
| 939 | ;; functions instead. |
| 940 | (eval-after-load "mule-cmds" |
| 941 | (progn |
| 942 | (add-hook 'input-method-activate-hook |
| 943 | 'viper-activate-input-method-action t) |
| 944 | (add-hook 'input-method-inactivate-hook |
| 945 | 'viper-inactivate-input-method-action t))) |
| 946 | ) |
| 947 | (eval-after-load "mule-cmds" |
| 948 | (defadvice toggle-input-method (around viper-mule-advice activate) |
| 949 | "Adjust input-method toggling in vi-state." |
| 950 | (if (and viper-special-input-method (eq viper-current-state 'vi-state)) |
| 951 | (viper-inactivate-input-method) |
| 952 | ad-do-it))) |
| 953 | |
| 954 | ) ; viper-set-hooks |
| 955 | |
| 956 | |
| 957 | ;; these are primarily advices and Vi-ish variable settings |
| 958 | (defun viper-non-hook-settings () |
| 959 | |
| 960 | ;; This var is not local in Emacs, so we make it local. It must be local |
| 961 | ;; because although the stack of minor modes can be the same for all buffers, |
| 962 | ;; the associated *keymaps* can be different. In Viper, |
| 963 | ;; viper-vi-local-user-map, viper-insert-local-user-map, and others can have |
| 964 | ;; different keymaps for different buffers. Also, the keymaps associated |
| 965 | ;; with viper-vi/insert-state-modifier-minor-mode can be different. |
| 966 | (make-variable-buffer-local 'minor-mode-map-alist) |
| 967 | |
| 968 | ;; Viper changes the default mode-line-buffer-identification |
| 969 | (setq-default mode-line-buffer-identification '(" %b")) |
| 970 | |
| 971 | ;; setup emacs-supported vi-style feel |
| 972 | (setq next-line-add-newlines nil |
| 973 | require-final-newline t) |
| 974 | |
| 975 | (make-variable-buffer-local 'require-final-newline) |
| 976 | |
| 977 | ;; don't bark when mark is inactive |
| 978 | (if viper-emacs-p |
| 979 | (setq mark-even-if-inactive t)) |
| 980 | |
| 981 | (setq scroll-step 1) |
| 982 | |
| 983 | ;; Variable displaying the current Viper state in the mode line. |
| 984 | (viper-deflocalvar viper-mode-string viper-emacs-state-id) |
| 985 | (or (memq 'viper-mode-string global-mode-string) |
| 986 | (setq global-mode-string |
| 987 | (append '("" viper-mode-string) (cdr global-mode-string)))) |
| 988 | |
| 989 | (defadvice describe-key (before viper-read-keyseq-ad protect activate) |
| 990 | "Force to read key via `viper-read-key-sequence'." |
| 991 | (interactive (list (viper-read-key-sequence "Describe key: ")))) |
| 992 | |
| 993 | (defadvice describe-key-briefly |
| 994 | (before viper-read-keyseq-ad protect activate) |
| 995 | "Force to read key via `viper-read-key-sequence'." |
| 996 | (interactive (list (viper-read-key-sequence "Describe key briefly: ")))) |
| 997 | |
| 998 | |
| 999 | (defadvice find-file (before viper-add-suffix-advice activate) |
| 1000 | "Use `read-file-name' for reading arguments." |
| 1001 | (interactive (cons (read-file-name "Find file: " nil default-directory) |
| 1002 | ;; XEmacs: if Mule & prefix arg, ask for coding system |
| 1003 | (cond ((and viper-xemacs-p (featurep 'mule)) |
| 1004 | (list |
| 1005 | (and current-prefix-arg |
| 1006 | (read-coding-system "Coding-system: ")))) |
| 1007 | ;; Emacs: do wildcards |
| 1008 | ((and viper-emacs-p (boundp 'find-file-wildcards)) |
| 1009 | (list find-file-wildcards)))) |
| 1010 | )) |
| 1011 | |
| 1012 | (defadvice find-file-other-window (before viper-add-suffix-advice activate) |
| 1013 | "Use `read-file-name' for reading arguments." |
| 1014 | (interactive (cons (read-file-name "Find file in other window: " |
| 1015 | nil default-directory) |
| 1016 | ;; XEmacs: if Mule & prefix arg, ask for coding system |
| 1017 | (cond ((and viper-xemacs-p (featurep 'mule)) |
| 1018 | (list |
| 1019 | (and current-prefix-arg |
| 1020 | (read-coding-system "Coding-system: ")))) |
| 1021 | ;; Emacs: do wildcards |
| 1022 | ((and viper-emacs-p (boundp 'find-file-wildcards)) |
| 1023 | (list find-file-wildcards)))) |
| 1024 | )) |
| 1025 | |
| 1026 | |
| 1027 | (defadvice find-file-other-frame (before viper-add-suffix-advice activate) |
| 1028 | "Use `read-file-name' for reading arguments." |
| 1029 | (interactive (cons (read-file-name "Find file in other frame: " |
| 1030 | nil default-directory) |
| 1031 | ;; XEmacs: if Mule & prefix arg, ask for coding system |
| 1032 | (cond ((and viper-xemacs-p (featurep 'mule)) |
| 1033 | (list |
| 1034 | (and current-prefix-arg |
| 1035 | (read-coding-system "Coding-system: ")))) |
| 1036 | ;; Emacs: do wildcards |
| 1037 | ((and viper-emacs-p (boundp 'find-file-wildcards)) |
| 1038 | (list find-file-wildcards)))) |
| 1039 | )) |
| 1040 | |
| 1041 | |
| 1042 | (defadvice read-file-name (around viper-suffix-advice activate) |
| 1043 | "Tell `exit-minibuffer' to run `viper-file-add-suffix' as a hook." |
| 1044 | (let ((viper-minibuffer-exit-hook |
| 1045 | (append viper-minibuffer-exit-hook |
| 1046 | '(viper-minibuffer-trim-tail viper-file-add-suffix)))) |
| 1047 | ad-do-it)) |
| 1048 | |
| 1049 | (defadvice start-kbd-macro (after viper-kbd-advice activate) |
| 1050 | "Remove Viper's intercepting bindings for C-x ). |
| 1051 | This may be needed if the previous `:map' command terminated abnormally." |
| 1052 | (define-key viper-vi-intercept-map "\C-x)" nil) |
| 1053 | (define-key viper-insert-intercept-map "\C-x)" nil) |
| 1054 | (define-key viper-emacs-intercept-map "\C-x)" nil)) |
| 1055 | |
| 1056 | ;; catch frame switching event |
| 1057 | (if (viper-window-display-p) |
| 1058 | (if viper-xemacs-p |
| 1059 | (add-hook 'mouse-leave-frame-hook |
| 1060 | 'viper-remember-current-frame) |
| 1061 | (defadvice handle-switch-frame (before viper-frame-advice activate) |
| 1062 | "Remember the selected frame before the switch-frame event." |
| 1063 | (viper-remember-current-frame (selected-frame)))) ) |
| 1064 | |
| 1065 | ) ; end viper-non-hook-settings |
| 1066 | |
| 1067 | |
| 1068 | \f |
| 1069 | ;; Ask only if this-command/last-command are nil, i.e., when loading |
| 1070 | (cond ((and (eq viper-mode 'ask) (null this-command) (null last-command)) |
| 1071 | (save-window-excursion |
| 1072 | (with-output-to-temp-buffer " *viper-info*" |
| 1073 | (princ " |
| 1074 | You have loaded Viper, and are about to Viperize your emacs! |
| 1075 | |
| 1076 | Viper is a Package for Emacs Rebels and a venomous VI PERil, |
| 1077 | |
| 1078 | It's time to decide: to Viperize or not to Viperize... |
| 1079 | |
| 1080 | If you wish to Viperize AND make this your way of life, please put |
| 1081 | |
| 1082 | (setq viper-mode t) |
| 1083 | (require 'viper) |
| 1084 | |
| 1085 | in your .emacs file (preferably, close to the top). |
| 1086 | These two lines must come in the order given. |
| 1087 | |
| 1088 | ** Viper users: |
| 1089 | **** The startup file name has been changed from .vip to .viper |
| 1090 | **** All vip-* style names have been converted to viper-* style.")) |
| 1091 | (if (y-or-n-p "Viperize? ") |
| 1092 | (setq viper-mode t) |
| 1093 | (setq viper-mode nil)) |
| 1094 | (message "") |
| 1095 | (kill-buffer " *viper-info*"))) |
| 1096 | |
| 1097 | ;; If viper-mode is t, then just continue. Viper will kick in. |
| 1098 | ((eq viper-mode t)) |
| 1099 | ;; Otherwise, it was asking Viper was not loaded through .emacs |
| 1100 | ;; In this case, it was either through M-x viper-mode or via something |
| 1101 | ;; else, like the custom widget. If Viper was loaded through |
| 1102 | ;; M-x viper-mode, then viper will kick in anyway. |
| 1103 | (t (setq viper-mode nil))) |
| 1104 | |
| 1105 | (defun viper-load-custom-file () |
| 1106 | (if (and (file-exists-p viper-custom-file-name) |
| 1107 | (not noninteractive)) |
| 1108 | (load viper-custom-file-name))) |
| 1109 | |
| 1110 | |
| 1111 | |
| 1112 | \f |
| 1113 | |
| 1114 | |
| 1115 | ;; save non-viper vars that Viper might change |
| 1116 | (if (null viper-saved-non-viper-variables) |
| 1117 | (setq viper-saved-non-viper-variables |
| 1118 | (list |
| 1119 | (cons 'next-line-add-newlines (list next-line-add-newlines)) |
| 1120 | (cons 'require-final-newline (list require-final-newline)) |
| 1121 | (cons 'scroll-step (list scroll-step)) |
| 1122 | (cons 'mode-line-buffer-identification |
| 1123 | (list (default-value 'mode-line-buffer-identification))) |
| 1124 | (cons 'global-mode-string (list global-mode-string)) |
| 1125 | (if viper-emacs-p |
| 1126 | (cons 'mark-even-if-inactive (list mark-even-if-inactive))) |
| 1127 | ))) |
| 1128 | |
| 1129 | |
| 1130 | ;; Set some useful macros, advices |
| 1131 | ;; These must be BEFORE ~/.viper is loaded, |
| 1132 | ;; so the user can unrecord them in ~/.viper. |
| 1133 | (if viper-mode |
| 1134 | (progn |
| 1135 | ;; set advices and some variables that give emacs Vi look. |
| 1136 | (viper-non-hook-settings) |
| 1137 | |
| 1138 | ;; repeat the 2nd previous command without rotating the command history |
| 1139 | (viper-record-kbd-macro |
| 1140 | (vector viper-repeat-from-history-key '\1) 'vi-state |
| 1141 | [(meta x) v i p e r - r e p e a t - f r o m - h i s t o r y return] 't) |
| 1142 | ;; repeat the 3d previous command without rotating the command history |
| 1143 | (viper-record-kbd-macro |
| 1144 | (vector viper-repeat-from-history-key '\2) 'vi-state |
| 1145 | [(meta x) v i p e r - r e p e a t - f r o m - h i s t o r y return] 't) |
| 1146 | |
| 1147 | ;; set macros for toggling case sensitivity and regexp search |
| 1148 | (viper-set-searchstyle-toggling-macros nil) |
| 1149 | ;; Make %%% toggle parsing comments for matching parentheses |
| 1150 | (viper-set-parsing-style-toggling-macro nil) |
| 1151 | |
| 1152 | ;; ~/.viper is loaded if exists |
| 1153 | (viper-load-custom-file) |
| 1154 | |
| 1155 | ;; should be after loading custom file to avoid the pesky msg that |
| 1156 | ;; mouse-search/insert keys are already bound |
| 1157 | (viper-bind-mouse-search-key) |
| 1158 | (viper-bind-mouse-insert-key) |
| 1159 | )) |
| 1160 | |
| 1161 | |
| 1162 | \f |
| 1163 | ;; Applying Viper customization -- runs after (load .viper) |
| 1164 | |
| 1165 | ;; Save user settings or Viper defaults for vars controlled by |
| 1166 | ;; viper-expert-level |
| 1167 | (if (null viper-saved-user-settings) |
| 1168 | (setq viper-saved-user-settings |
| 1169 | (list (cons 'viper-want-ctl-h-help (list viper-want-ctl-h-help)) |
| 1170 | (cons 'viper-always (list viper-always)) |
| 1171 | (cons 'viper-no-multiple-ESC (list viper-no-multiple-ESC)) |
| 1172 | (cons 'viper-ex-style-motion (list viper-ex-style-motion)) |
| 1173 | (cons 'viper-ex-style-editing |
| 1174 | (list viper-ex-style-editing)) |
| 1175 | (cons 'viper-want-emacs-keys-in-vi |
| 1176 | (list viper-want-emacs-keys-in-vi)) |
| 1177 | (cons 'viper-electric-mode (list viper-electric-mode)) |
| 1178 | (cons 'viper-want-emacs-keys-in-insert |
| 1179 | (list viper-want-emacs-keys-in-insert)) |
| 1180 | (cons 'viper-re-search (list viper-re-search))))) |
| 1181 | |
| 1182 | |
| 1183 | (if viper-mode |
| 1184 | (progn |
| 1185 | (viper-set-minibuffer-style) |
| 1186 | (if viper-buffer-search-char |
| 1187 | (viper-buffer-search-enable)) |
| 1188 | (viper-update-syntax-classes 'set-default) |
| 1189 | )) |
| 1190 | |
| 1191 | \f |
| 1192 | ;;; Familiarize Viper with some minor modes that have their own keymaps |
| 1193 | (if viper-mode |
| 1194 | (progn |
| 1195 | (viper-harness-minor-mode "compile") |
| 1196 | (viper-harness-minor-mode "outline") |
| 1197 | (viper-harness-minor-mode "allout") |
| 1198 | (viper-harness-minor-mode "xref") |
| 1199 | (viper-harness-minor-mode "lmenu") |
| 1200 | (viper-harness-minor-mode "vc") |
| 1201 | (viper-harness-minor-mode "ltx-math") ; LaTeX-math-mode in AUC-TeX, which |
| 1202 | (viper-harness-minor-mode "latex") ; sits in one of these two files |
| 1203 | (viper-harness-minor-mode "cyrillic") |
| 1204 | (viper-harness-minor-mode "russian") |
| 1205 | (viper-harness-minor-mode "view-less") |
| 1206 | (viper-harness-minor-mode "view") |
| 1207 | (viper-harness-minor-mode "reftex") |
| 1208 | (viper-harness-minor-mode "flyspell") |
| 1209 | )) |
| 1210 | |
| 1211 | |
| 1212 | ;; Intercept maps could go in viper-keym.el |
| 1213 | ;; We keep them here in case someone redefines them in ~/.viper |
| 1214 | |
| 1215 | (define-key viper-vi-intercept-map viper-ESC-key 'viper-intercept-ESC-key) |
| 1216 | (define-key viper-insert-intercept-map viper-ESC-key 'viper-intercept-ESC-key) |
| 1217 | |
| 1218 | ;; This is taken care of by viper-insert-global-user-map. |
| 1219 | ;;(define-key viper-replace-map viper-ESC-key 'viper-intercept-ESC-key) |
| 1220 | |
| 1221 | |
| 1222 | ;; The default viper-toggle-key is \C-z; for the novice, it suspends or |
| 1223 | ;; iconifies Emacs |
| 1224 | (define-key viper-vi-intercept-map viper-toggle-key 'viper-toggle-key-action) |
| 1225 | (define-key |
| 1226 | viper-emacs-intercept-map viper-toggle-key 'viper-change-state-to-vi) |
| 1227 | |
| 1228 | ;;; Escape from Emacs and Insert modes to Vi for one command |
| 1229 | (define-key |
| 1230 | viper-emacs-intercept-map "\C-c\\" 'viper-escape-to-vi) |
| 1231 | (define-key |
| 1232 | viper-insert-intercept-map "\C-c\\" 'viper-escape-to-vi) |
| 1233 | |
| 1234 | (if viper-mode |
| 1235 | (setq-default viper-emacs-intercept-minor-mode t |
| 1236 | viper-emacs-local-user-minor-mode t |
| 1237 | viper-emacs-global-user-minor-mode t |
| 1238 | viper-emacs-kbd-minor-mode t |
| 1239 | viper-emacs-state-modifier-minor-mode t)) |
| 1240 | (if (and viper-mode (eq viper-current-state 'emacs-state)) |
| 1241 | (setq viper-emacs-intercept-minor-mode t |
| 1242 | viper-emacs-local-user-minor-mode t |
| 1243 | viper-emacs-global-user-minor-mode t |
| 1244 | viper-emacs-kbd-minor-mode t |
| 1245 | viper-emacs-state-modifier-minor-mode t)) |
| 1246 | |
| 1247 | |
| 1248 | (if (and viper-mode |
| 1249 | (or viper-always |
| 1250 | (and (< viper-expert-level 5) (> viper-expert-level 0)))) |
| 1251 | (viper-set-hooks)) |
| 1252 | |
| 1253 | ;; Let all minor modes take effect after loading. |
| 1254 | ;; This may not be enough, so we also set default minor-mode-alist. |
| 1255 | ;; Without setting the default, new buffers that come up in emacs mode have |
| 1256 | ;; minor-mode-map-alist = nil, unless we call viper-change-state-* |
| 1257 | (if (and viper-mode (eq viper-current-state 'emacs-state)) |
| 1258 | (progn |
| 1259 | (viper-change-state-to-emacs) |
| 1260 | (setq-default minor-mode-map-alist minor-mode-map-alist) |
| 1261 | )) |
| 1262 | |
| 1263 | (if (and viper-mode (this-major-mode-requires-vi-state major-mode)) |
| 1264 | (viper-mode)) |
| 1265 | |
| 1266 | (if viper-mode |
| 1267 | (setq initial-major-mode |
| 1268 | `(lambda () |
| 1269 | (funcall (quote ,initial-major-mode)) |
| 1270 | (set-viper-state-in-major-mode)) |
| 1271 | )) |
| 1272 | |
| 1273 | |
| 1274 | |
| 1275 | (run-hooks 'viper-load-hook) ; the last chance to change something |
| 1276 | |
| 1277 | (provide 'viper) |
| 1278 | |
| 1279 | |
| 1280 | ;;; Local Variables: |
| 1281 | ;;; eval: (put 'viper-deflocalvar 'lisp-indent-hook 'defun) |
| 1282 | ;;; End: |
| 1283 | |
| 1284 | ;;; viper.el ends here |