-;;; viper.el --- A full-featured Vi emulator.
-;; a VI Plan for Emacs Rescue,
-;; and a venomous VI PERil.
-;; Viper Is also a Package for Emacs Rebels.
-
-;; Copyright (C) 1994, 1995 Free Software Foundation, Inc.
-
-;; Keywords: emulations
-;; Author: Michael Kifer <kifer@cs.sunysb.edu>
-
-(defconst viper-version "2.82 of October 12, 1995"
- "The current version of Viper")
-
-;; This file is part of GNU Emacs.
-
-;; GNU Emacs is free software; you can redistribute it and/or modify
-;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 2, or (at your option)
-;; any later version.
-
-;; GNU Emacs is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;; GNU General Public License for more details.
-
-;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
-
-;;; Commentary:
-
-;; Viper is a full-featured Vi emulator for Emacs 19. It emulates and
-;; improves upon the standard features of Vi and, at the same time, allows
-;; full access to all Emacs facilities. Viper supports multiple undo,
-;; file name completion, command, file, and search history and it extends
-;; Vi in many other ways. Viper is highly customizable through the various
-;; hooks, user variables, and keymaps. It is implemented as a collection
-;; of minor modes and it is designed to provide full access to all Emacs
-;; major and minor modes.
-;;
-;;; History
-;;
-;; Viper is a new name for a package formerly known as VIP-19,
-;; which was a successor of VIP version 3.5 by Masahiko Sato
-;; <ms@sail.stanford.edu> and VIP version 4.2 by Aamod Sane
-;; <sane@cs.uiuc.edu>. Some ideas from vip 4.4.2 by Aamod Sane
-;; were also shamelessly plagiarized.
-;;
-;; Viper maintains some degree of compatibility with these older
-;; packages. See the documentation for customization.
-;;
-;; The main difference between Viper and these older packages are:
-;;
-;; 1. Viper emulates Vi at several levels, from almost complete conformity
-;; to a rather loose Vi-compliance.
-;;
-;; 2. Viper provides full access to all major and minor modes of Emacs
-;; without the need to type extra keys.
-;; The older versions of VIP (and other Vi emulators) do not work with
-;; some major and minor modes.
-;;
-;; 3. Viper supports vi-style undo.
-;;
-;; 4. Viper fully emulates (and improves upon) vi's replacement mode.
-;;
-;; 5. Viper has a better interface to ex, including command, variable, and
-;; file name completion.
-;;
-;; 6. Viper uses native Emacs history and completion features; it doesn't
-;; rely on other packages (such as gmhist.el and completer.el) to provide
-;; these features.
-;;
-;; 7. Viper supports Vi-style editing in the minibuffer, by allowing the
-;; user to switch from Insert state to Vi state to Replace state, etc.
-;;
-;; 8. Viper keeps history of recently inserted pieces of text and recently
-;; executed Vi-style destructive commands, such as `i', `d', etc.
-;; These pieces of text can be inserted in later insertion commands;
-;; the previous destructive commands can be re-executed.
-;;
-;; 9. Viper has Vi-style keyboard macros, which enhances the similar
-;; facility in the original Vi.
-;; First, one can execute any Emacs command while defining a
-;; macro, not just the Vi commands. Second, macros are defined in a
-;; WYSYWYG mode, using an interface to Emacs' WYSIWYG style of defining
-;; macros. Third, in Viper, one can define macros that are specific to
-;; a given buffer, a given major mode, or macros defined for all buffers.
-;; The same macro name can have several different definitions:
-;; one global, several definitions for various major modes, and
-;; definitions for specific buffers.
-;; Bffer-specific definitions override mode-specific
-;; definitions, which, in turn, override global definitions.
-;;
-;;
-;;; Installation:
-;; -------------
-;;
-;; (require 'viper)
-;;
-
-;;; Acknowledgements:
-;; -----------------
-;; Bug reports and ideas contributed by the following users
-;; have helped improve Viper and the various versions of VIP.
-;; See the on-line manual for a complete list of contributors.
-;;
-;;
-;;; Notes:
-;;
-;; 1. Major modes.
-;; In most cases, Viper handles major modes correctly, i.e., they come up
-;; in the right state (either vi-state or emacs-state). For instance, text
-;; files come up in vi-state, while, say, Dired appears in emacs-state by
-;; default.
-;; However, some modes do not appear in the right mode in the beginning,
-;; usually because they neglect to follow Emacs conventions (e.g., they don't
-;; use kill-all-local-variables when they start). Some major modes
-;; may fail to come up in emacs-state if they call hooks, such as
-;; text-hook, for no good reason.
-;;
-;; As an immediate solution, you can hit C-z to bring about the right mode.
-;; An interim solution is to add an appropriate hook to the mode like this:
-;;
-;; (add-hook 'your-favorite-mode 'viper-mode)
-;; or
-;; (add-hook 'your-favorite-mode 'vip-change-state-to-emacs)
-;;
-;; whichever applies. The right thing to do, however, is to complain to the
-;; author of the respective package. (Sometimes they also neglect to equip
-;; their modes with hooks, which is one more reason for complaining.)
-;;
-;; 2. Keymap handling
-;; Because Emacs 19 has an elegant mechanism for turning minor mode keymaps
-;; on and off, implementation of Viper has been greatly simplified. Viper
-;; has several minor modes.
-;;
-;; Viper's Vi state consists of seven minor modes:
-;;
-;; vip-vi-intercept-minor-mode
-;; vip-vi-local-user-minor-mode
-;; vip-vi-global-user-minor-mode
-;; vip-vi-kbd-minor-mode
-;; vip-vi-state-modifier-minor-mode
-;; vip-vi-diehard-minor-mode
-;; vip-vi-basic-minor-mode
-;;
-;; Bindings done to the keymap of the first mode overshadow those done to
-;; the second, which, in turn, overshadows those done to the third, etc.
-;;
-;; The last vip-vi-basic-minor-mode contains most of the usual Vi bindings
-;; in its edit mode. This mode provides access to all Emacs facilities.
-;; Novice users, however, may want to set their vip-expert-level to 1
-;; in their .vip file. This will enable vip-vi-diehard-minor-mode. This
-;; minor mode's bindings make Viper simulate the usual Vi very closely.
-;; For instance, C-c will not have its standard Emacs binding
-;; and so many of the goodies of Emacs are not available.
-;;
-;; An skilled user, should set vip-expert-level to at least 3. This will
-;; enable ;; C-c and many Emacs facilities will become available.
-;; In this case, vip-vi-diehard-minor-mode is inactive.
-;;
-;; Viper gurus should have at least
-;; (setq vip-expert-level 4)
-;; in their ~/.vip files. This will unsuppress all Emacs keys that are not
-;; essential for VI-style editing.
-;; Pick-and-choose users may want to put
-;; (setq vip-expert-level 5)
-;; in ~/.vip. Viper will then leave it up to the user to set the variables
-;; vip-want-* See vip-set-expert-level for details.
-;;
-;; The very first minor mode, vip-vi-intercept-minor-mode, is of no
-;; concern for the user. It is needed to bind Viper's vital keys, such as
-;; ESC and C-z.
-;;
-;; The second mode, vip-vi-local-user-minor-mode, usually has an
-;; empty keymap. However, the user can set bindings in this keymap, which
-;; will overshadow the corresponding bindings in the other two minor
-;; modes. This is useful, for example, for setting up ZZ in gnus,
-;; rmail, mh-e, etc., to send message instead of saving it in a file.
-;; Likewise, in Dired mode, you may want to bind ZN and ZP to commands
-;; that would visit the next or the previous file in the Dired buffer.
-;; Setting local keys is tricky, so don't do it directly. Instead, use
-;; vip-add-local-keys function (see its doc).
-;;
-;; The third minor mode, vip-vi-global-user-minor-mode, is also intended
-;; for the users but, unlike vip-vi-local-user-minor-mode, its key
-;; bindings are seen in all Viper buffers. This mode keys can be done
-;; with define-key command.
-;;
-;; The fourth minor mode, vip-vi-kbd-minor-mode, is used by keyboard
-;; macros. Users are NOT supposed to modify this keymap directly.
-;;
-;; The fifth mode, vip-vi-state-modifier-minor-mode, can be used to set
-;; key bindings that are visible in some major modes but not in others.
-;;
-;; Users are allowed to modify keymaps that belong to
-;; vip-vi-local-user-minor-mode, vip-vi-global-user-minor-mode,
-;; and vip-vi-state-modifier-minor-mode only.
-;;
-;; Viper's Insert state also has seven minor modes:
-;;
-;; vip-insert-intercept-minor-mode
-;; vip-insert-local-user-minor-mode
-;; vip-insert-global-user-minor-mode
-;; vip-insert-kbd-minor-mode
-;; vip-insert-state-modifier-minor-mode
-;; vip-insert-diehard-minor-mode
-;; vip-insert-basic-minor-mode
-;;
-;; As with VI's editing modes, the first mode, vip-insert-intercept-minor-mode
-;; is used to bind vital keys that are not to be changed by the user.
-;;
-;; The next mode, vip-insert-local-user-minor-mode, is used to customize
-;; bindings in the insert state of Viper. The third mode,
-;; vip-insert-global-user-minor-mode is like
-;; vip-insert-local-user-minor-mode, except that its bindings are seen in
-;; all Viper buffers. As with vip-vi-local-user-minor-mode, its bindings
-;; should be done via the function vip-add-local-keys. Bindings for
-;; vip-insert-global-user-minor-mode can be set with the define-key command.
-;;
-;; The next minor mode, vip-insert-kbd-minor-mode,
-;; is used for keyboard VI-style macros defined with :map!.
-;;
-;; The fifth minor mode, vip-insert-state-modifier-minor-mode, is like
-;; vip-vi-state-modifier-minor-mode, except that it is used in the Insert
-;; state; it can be used to modify keys in a mode-specific fashion.
-;;
-;; The minor mode vip-insert-diehard-minor-mode is in effect when
-;; the user wants a high degree of Vi compatibility (a bad idea, really!).
-;; The last minor mode, vip-insert-basic-minor-mode, is always in effect
-;; when Viper is in insert state. It binds a small number of keys needed for
-;; Viper's operation.
-;;
-;; Finally, Viper provides minor modes for overriding bindings set by Emacs
-;; modes when Viper is in Emacs state:
-;;
-;; vip-emacs-local-user-minor-mode
-;; vip-emacs-global-user-minor-mode
-;; vip-emacs-kbd-minor-mode
-;; vip-emacs-state-modifier-minor-mode
-;;
-;; These minor modes are in effect when Viper is in Emacs state. The keymap
-;; associated with vip-emacs-global-user-minor-mode,
-;; vip-emacs-global-user-map, overrides the global and local keymaps as
-;; well as the minor mode keymaps set by other modes. The keymap of
-;; vip-emacs-local-user-minor-mode, vip-emacs-local-user-map, overrides
-;; everything, but it is used on a per buffer basis.
-;; The keymap associated with vip-emacs-state-modifier-minor-mode
-;; overrides keys on a per-major-mode basis. The mode
-;; vip-emacs-kbd-minor-mode is used to define Vi-style macros in Emacs
-;; state.
-;;
-;; 3. There is also one minor mode that is used when Viper is in its
-;; replace-state (used for commands like cw, C, etc.). This mode is
-;; called
-;;
-;; vip-replace-minor-mode
-;;
-;; and its keymap is vip-replace-map. Replace minor mode is always
-;; used in conjunction with the minor modes for insert-state, and its
-;; keymap overshadows the keymaps for insert minor modes.
-;;
-;; 4. Defining buffer-local bindings in Vi and Insert modes.
-;; As mentioned before, sometimes, it is convenient to have
-;; buffer-specific of mode-specific key bindings in Vi and insert modes.
-;; Viper provides a special function, vip-add-local-keys, to do precisely
-;; this. For instance, is you need to add couple of mode-specific bindings
-;; to Insert mode, you can put
-;;
-;; (vip-add-local-keys 'insert-state '((key1 . func1) (key2 .func2)))
-;;
-;; somewhere in a hook of this major mode. If you put something like this
-;; in your own elisp function, this will define bindings specific to the
-;; buffer that was current at the time of the call to vip-add-local-keys.
-;; The only thing to make sure here is that the major mode of this buffer
-;; is written according to Emacs conventions, which includes a call to
-;; (kill-all-local-variables). See vip-add-local-keys for more details.
-;;
-;;
-;; TO DO (volunteers?):
-;;
-;; 1. Some of the code that is inherited from VIP-3.5 is rather
-;; convoluted. Instead of vip-command-argument, keymaps should bind the
-;; actual commands. E.g., "dw" should be bound to a generic command
-;; vip-delete that will delete things based on the value of
-;; last-command-char. This would greatly simplify the logic and the code.
-;;
-;; 2. Somebody should venture to write a customization package a la
-;; options.el that would allow the user to change values of variables
-;; that meet certain specs (e.g., match a regexp) and whose doc string
-;; starts with a '*'. Then, the user should be offered to save
-;; variables that were changed. This will make user's customization job
-;; much easier.
-;;
-
-
-(require 'advice)
-(require 'cl)
-(require 'ring)
-
-(require 'viper-util)
-
-\f
-;;; Variables
-
-;; Is t until viper-mode executes for the very first time.
-;; Prevents recursive descend into startup messages.
-(defvar vip-first-time t)
-
-(defvar vip-expert-level 0
- "User's expert level.
-The minor mode vip-vi-diehard-minor-mode is in effect when
-vip-expert-level is 1 or 2 or when vip-want-emacs-keys-in-vi is t.
-The minor mode vip-insert-diehard-minor-mode is in effect when
-vip-expert-level is 1 or 2 or if vip-want-emacs-keys-in-insert is t.
-Use `M-x vip-set-expert-level' to change this.")
-
-;; Max expert level supported by Viper. This is NOT a user option.
-;; It is here to make it hard for the user from resetting it.
-(defconst vip-max-expert-level 5)
-
-;; Contains user settings for vars affected by vip-set-expert-level function.
-;; Not a user option.
-(defvar vip-saved-user-settings nil)
-
-
-;;; Viper minor modes
-
-;; This is not local in Emacs, so we make it local.
-(make-variable-buffer-local 'minor-mode-map-alist)
-
-;; Mode for vital things like \e, C-z.
-(vip-deflocalvar vip-vi-intercept-minor-mode nil)
-
-(vip-deflocalvar vip-vi-basic-minor-mode nil
- "Viper's minor mode for Vi bindings.")
-
-(vip-deflocalvar vip-vi-local-user-minor-mode nil
- "Auxiliary minor mode for user-defined local bindings in Vi state.")
-
-(vip-deflocalvar vip-vi-global-user-minor-mode nil
- "Auxiliary minor mode for user-defined global bindings in Vi state.")
-
-(vip-deflocalvar vip-vi-state-modifier-minor-mode nil
- "Minor mode used to make major-mode-specific modification to Vi state.")
-
-(vip-deflocalvar vip-vi-diehard-minor-mode nil
- "This minor mode is in effect when the user wants Viper to be Vi.")
-
-(vip-deflocalvar vip-vi-kbd-minor-mode nil
- "Minor mode for Ex command macros in Vi state.
-The corresponding keymap stores key bindings of Vi macros defined with
-the Ex command :map.")
-
-;; Mode for vital things like \e, C-z.
-(vip-deflocalvar vip-insert-intercept-minor-mode nil)
-
-(vip-deflocalvar vip-insert-basic-minor-mode nil
- "Viper's minor mode for bindings in Insert mode.")
-
-(vip-deflocalvar vip-insert-local-user-minor-mode nil
- "Auxiliary minor mode for buffer-local user-defined bindings in Insert state.
-This is a way to overshadow normal Insert mode bindings locally to certain
-designated buffers.")
-
-(vip-deflocalvar vip-insert-global-user-minor-mode nil
- "Auxiliary minor mode for global user-defined bindings in Insert state.")
-
-(vip-deflocalvar vip-insert-state-modifier-minor-mode nil
- "Minor mode used to make major-mode-specific modification to Insert state.")
-
-(vip-deflocalvar vip-insert-diehard-minor-mode nil
- "Minor mode that simulates Vi very closely.
-Not recommended, except for the novice user.")
-
-(vip-deflocalvar vip-insert-kbd-minor-mode nil
-"Minor mode for Ex command macros Insert state.
-The corresponding keymap stores key bindings of Vi macros defined with
-the Ex command :map!.")
-
-(vip-deflocalvar vip-replace-minor-mode nil
- "Minor mode in effect in replace state (cw, C, and the like commands).")
-
-;; Mode for vital things like \C-z and \C-x)
-;; This is t, by default. So, any new buffer will have C-z defined as
-;; switch to Vi, unless we switched states in this buffer
-(vip-deflocalvar vip-emacs-intercept-minor-mode t)
-
-(vip-deflocalvar vip-emacs-local-user-minor-mode t
- "Minor mode for local user bindings effective in Emacs state.
-Users can use it to override Emacs bindings when Viper is in its Emacs
-state.")
-
-(vip-deflocalvar vip-emacs-global-user-minor-mode t
- "Minor mode for global user bindings in effect in Emacs state.
-Users can use it to override Emacs bindings when Viper is in its Emacs
-state.")
-
-(vip-deflocalvar vip-emacs-kbd-minor-mode t
- "Minor mode for Vi style macros in Emacs state.
-The corresponding keymap stores key bindings of Vi macros defined with
-`vip-record-kbd-macro' command. There is no Ex-level command to do this
-interactively.")
-
-(vip-deflocalvar vip-emacs-state-modifier-minor-mode t
- "Minor mode used to make major-mode-specific modification to Emacs state.
-For instance, a Vi purist may want to bind `dd' in Dired mode to a function
-that deletes a file.")
-
-
-
-;;; ISO characters
-
-(vip-deflocalvar vip-automatic-iso-accents nil
- "*If non-nil, ISO accents will be turned on in insert/replace emacs states and turned off in vi-state.
-For some users, this behavior may be too primitive. In this case, use
-insert/emacs/vi state hooks.")
-
-
-;;; Emacs keys in other states.
-
-(defvar vip-want-emacs-keys-in-insert t
- "*Set to nil if you want complete Vi compatibility in insert mode.
-Complete compatibility with Vi is not recommended for power use of Viper.")
-
-(defvar vip-want-emacs-keys-in-vi t
- "*Set to nil if you want complete Vi compatibility in Vi mode.
-Full Vi compatibility is not recommended for power use of Viper.")
-
-
-
-;; VI-style Undo
-
-;; Used to 'undo' complex commands, such as replace and insert commands.
-(vip-deflocalvar vip-undo-needs-adjustment nil)
-(put 'vip-undo-needs-adjustment 'permanent-local t)
-
-;; A mark that Viper puts on buffer-undo-list. Marks the beginning of a
-;; complex command that must be undone atomically. If inserted, it is
-;; erased by vip-change-state-to-vi and vip-repeat.
-(defconst vip-buffer-undo-list-mark 'viper)
-
-(defvar vip-keep-point-on-undo nil
- "*Non-nil means not to move point while undoing commands.
-This style is different from Emacs and Vi. Try it to see if
-it better fits your working style.")
-
-;; Replace mode and changing text
-
-;; Viper's own after/before change functions, which get vip-add-hook'ed to
-;; Emacs's
-(vip-deflocalvar vip-after-change-functions nil "")
-(vip-deflocalvar vip-before-change-functions nil "")
-(vip-deflocalvar vip-post-command-hooks nil "")
-(vip-deflocalvar vip-pre-command-hooks nil "")
-
-;; Can be used to pass global states around for short period of time
-(vip-deflocalvar vip-intermediate-command nil "")
-
-;; Indicates that the current destructive command has started in replace mode.
-(vip-deflocalvar vip-began-as-replace nil "")
-
-(defvar vip-replace-overlay-cursor-color "Red"
- "*Cursor color to use in Replace state")
-
-
-(vip-deflocalvar vip-replace-overlay nil "")
-(put 'vip-replace-overlay 'permanent-local t)
-
-(if (vip-window-display-p)
- (progn
- (add-to-list 'facemenu-unlisted-faces 'vip-replace-overlay-face)
- (make-face 'vip-replace-overlay-face)
- (or (face-differs-from-default-p 'vip-replace-overlay-face)
- (progn
- (if (vip-can-use-colors "darkseagreen2" "Black")
- (progn
- (set-face-background
- 'vip-replace-overlay-face "darkseagreen2")
- (set-face-foreground 'vip-replace-overlay-face "Black")))
- (set-face-underline-p 'vip-replace-overlay-face t))
- )))
-
-(defvar vip-replace-overlay-face 'vip-replace-overlay-face
- "*Face for highlighting replace regions on a window display.")
-
-(defvar vip-replace-region-end-delimiter "$"
- "A string marking the end of replacement regions.
-It is used only with TTYs or if `vip-use-replace-region-delimiters'
-is non-nil.")
-(defvar vip-replace-region-start-delimiter ""
- "A string marking the beginning of replacement regions.
-It is used only with TTYs or if `vip-use-replace-region-delimiters'
-is non-nil.")
-(defvar vip-use-replace-region-delimiters
- (or (not (vip-window-display-p)) (not (vip-color-display-p)))
- "*If non-nil, Viper will always use `vip-replace-region-end-delimiter' and
-`vip-replace-region-start-delimiter' to delimit replacement regions, even on
-color displays. By default, the delimiters are used only on TTYs or
-monochrome displays.")
-
-;; XEmacs requires glyphs
-(if vip-xemacs-p
- (progn
- (or (glyphp vip-replace-region-end-delimiter)
- (setq vip-replace-region-end-delimiter
- (make-glyph vip-replace-region-end-delimiter)))
- (or (glyphp vip-replace-region-start-delimiter)
- (setq vip-replace-region-start-delimiter
- (make-glyph vip-replace-region-start-delimiter)))
- ))
-
-
-;; These are local marker that must be initialized to nil and moved with
-;; `vip-move-marker-locally'
-;;
-;; Remember the last position inside the replace region.
-(vip-deflocalvar vip-last-posn-in-replace-region nil)
-;; Remember the last position while inserting
-(vip-deflocalvar vip-last-posn-while-in-insert-state nil)
-(put 'vip-last-posn-in-replace-region 'permanent-local t)
-(put 'vip-last-posn-while-in-insert-state 'permanent-local t)
-
-(vip-deflocalvar vip-sitting-in-replace nil "")
-(put 'vip-sitting-in-replace 'permanent-local t)
-
-;; Remember the number of characters that have to be deleted in replace
-;; mode to compensate for the inserted characters.
-(vip-deflocalvar vip-replace-chars-to-delete 0 "")
-(vip-deflocalvar vip-replace-chars-deleted 0 "")
-
-;; Insertion ring and command ring
-(defvar vip-insertion-ring-size 14
- "The size of the insertion ring.")
-;; The insertion ring.
-(defvar vip-insertion-ring nil)
-;; This is temp insertion ring. Used to do rotation for display purposes.
-;; When rotation just started, it is initialized to vip-insertion-ring.
-(defvar vip-temp-insertion-ring nil)
-(defvar vip-last-inserted-string-from-insertion-ring "")
-
-(defvar vip-command-ring-size 14
- "The size of the command ring.")
-;; The command ring.
-(defvar vip-command-ring nil)
-;; This is temp command ring. Used to do rotation for display purposes.
-;; When rotation just started, it is initialized to vip-command-ring.
-(defvar vip-temp-command-ring nil)
-
-;; Modes and related variables
-
-;; Current mode. One of: `emacs-state', `vi-state', `insert-state'
-(vip-deflocalvar vip-current-state 'emacs-state)
-
-
-(defvar vip-toggle-key "\C-z"
- "The key used to change states from emacs to Vi and back.
-In insert mode, this key also functions as Meta.
-Must be set in .vip file or prior to loading Viper.
-This setting cannot be changed interactively.")
-
-(defvar vip-ESC-key "\e"
- "Key used to ESC.
-Must be set in .vip file or prior to loading Viper.
-This setting cannot be changed interactively.")
-
-(defvar vip-no-multiple-ESC t
- "*If true, multiple ESC in Vi mode will cause bell to ring.
-\_ is then mapped to Meta.
-This is set to t on a windowing terminal and to 'twice on a dumb
-terminal (unless the user level is 1, 2, or 5). On a dumb terminal, this
-enables cursor keys and is generally more convenient, as terminals usually
-don't have a convenient Meta key.
-Setting vip-no-multiple-ESC to nil will allow as many multiple ESC,
-as is allowed by the major mode in effect.")
-
-
-(defvar vip-want-ctl-h-help nil
- "*If t then C-h is bound to help-command in insert mode, if nil then it is
-bound to delete-backward-char.")
-
-;; Autoindent in insert
-
-;; Variable that keeps track of whether C-t has been pressed.
-(vip-deflocalvar vip-cted nil "")
-
-;; Preserve the indent value, used by C-d in insert mode.
-(vip-deflocalvar vip-current-indent 0)
-
-;; Whether to preserve the indent, used by C-d in insert mode.
-(vip-deflocalvar vip-preserve-indent nil)
-
-(defconst vip-auto-indent nil
- "*Autoindent if t.")
-
-(defconst vip-shift-width 8
- "*The shiftwidth variable.")
-
-;; Variables for repeating destructive commands
-
-(defconst vip-keep-point-on-repeat t
- "*If t, don't move point when repeating previous command.
-This is useful for doing repeated changes with the '.' key.
-The user can change this to nil, if she likes when the cursor moves
-to a new place after repeating previous Vi command.")
-
-;; Remember insert point as a marker. This is a local marker that must be
-;; initialized to nil and moved with `vip-move-marker-locally'.
-(vip-deflocalvar vip-insert-point nil)
-(put 'vip-insert-point 'permanent-local t)
-
-;; This remembers the point before dabbrev-expand was called.
-;; If vip-insert-point turns out to be bigger than that, it is reset
-;; back to vip-pre-command-point.
-;; The reason this is needed is because dabbrev-expand (and possibly
-;; others) may jump to before the insertion point, delete something and
-;; then reinsert a bigger piece. For instance: bla^blo
-;; If dabbrev-expand is called after `blo' and ^ indicates vip-insert-point,
-;; then point jumps to the beginning of `blo'. If expansion is found, `blablo'
-;; is deleted, and we have |^, where | denotes point. Next, dabbrev-expand
-;; will insert the expansion, and we get: blablo^
-;; Whatever we insert next goes before the ^, i.e., before the
-;; vip-insert-point marker. So, Viper will think that nothing was
-;; inserted. Remembering the orig position of the marker circumvents the
-;; problem.
-;; We don't know of any command, except dabbrev-expand, that has the same
-;; problem. However, the same trick can be used if such a command is
-;; discovered later.
-;;
-(vip-deflocalvar vip-pre-command-point nil)
-(put 'vip-pre-command-point 'permanent-local t) ; this is probably an overkill
-
-;; This is used for saving inserted text.
-(defvar vip-last-insertion nil)
-
-;; Remembers the last replaced region.
-(defvar vip-last-replace-region "")
-
-;; Remember com point as a marker.
-;; This is a local marker. Should be moved with `vip-move-marker-locally'
-(vip-deflocalvar vip-com-point nil)
-
-;; If non-nil, the value is a list (M-COM VAL COM REG inserted-text cmd-keys)
-;; It is used to re-execute last destructive command.
-;; M-COM is a Lisp symbol representing the function to be executed.
-;; VAL is the prefix argument that was used with that command.
-;; COM is an internal descriptor, such as ?r, ?c, ?C, which contains
-;; additional information on how the function in M-COM is to be handled.
-;; REG is the register used by command
-;; INSERTED-TEXT is text inserted by that command (in case of o, c, C, i, r
-;; commands).
-;; COMMAND-KEYS are the keys that were typed to invoke the command.
-(defvar vip-d-com nil)
-
-;; The character remembered by the Vi `r' command.
-(defvar vip-d-char nil)
-
-;; Name of register to store deleted or yanked strings
-(defvar vip-use-register nil)
-
-
-
-;; Variables for Moves and Searches
-
-;; For use by `;' command.
-(defvar vip-f-char nil)
-
-;; For use by `.' command.
-(defvar vip-F-char nil)
-
-;; For use by `;' command.
-(defvar vip-f-forward nil)
-
-;; For use by `;' command.
-(defvar vip-f-offset nil)
-
-;; Last search string
-(defvar vip-s-string "")
-
-(defvar vip-quote-string "> "
- "String inserted at the beginning of quoted region.")
-
-;; If t, search is forward.
-(defvar vip-s-forward nil)
-
-(defconst vip-case-fold-search nil
- "*If t, search ignores cases.")
-
-(defconst vip-re-search t
- "*If t, search is reg-exp search, otherwise vanilla search.")
-
-(defconst vip-re-query-replace t
- "*If t then do regexp replace, if nil then do string replace.")
-
-(defconst vip-re-replace t
- "*If t, do regexp replace. nil means do string replace.")
-
-(vip-deflocalvar vip-ex-style-motion t
- "*Ex-style: the commands l,h do not cross lines, etc.")
-
-(vip-deflocalvar vip-ex-style-editing-in-insert t
- "*The keys ^H, ^? don't jump lines in insert, ESC moves cursor back, etc.
-Note: this doesn't preclude ^H and ^? from deleting characters by moving
-past the insertion point. This is a feature, not a bug. ")
-
-(vip-deflocalvar vip-delete-backwards-in-replace nil
- "*If t, DEL key will delete characters while moving the cursor backwards.
-If nil, the cursor will move backwards without deleting anything.")
-
-(defconst vip-buffer-search-char nil
- "*Key bound for buffer-searching.")
-
-(defconst vip-search-wrap-around-t t
- "*If t, search wraps around.")
-
-(vip-deflocalvar vip-related-files-and-buffers-ring nil
- "*Ring of file and buffer names that are considered to be related to the
-current buffer.
-These buffers can be cycled through via :R and :P commands.")
-(put 'vip-related-files-and-buffers-ring 'permanent-local t)
-
-;; Used to find out if we are done with searching the current buffer.
-(vip-deflocalvar vip-local-search-start-marker nil)
-;; As above, but global
-(defvar vip-search-start-marker (make-marker))
-
-;; the search overlay
-(vip-deflocalvar vip-search-overlay nil)
-
-
-(defvar vip-heading-start
- (concat "^\\s-*(\\s-*defun\\s-\\|" ; lisp
- "^{\\s-*$\\|^[_a-zA-Z][^()]*[()].*{\\s-*$\\|" ; C/C++
- "^\\s-*class.*{\\|^\\s-*struct.*{\\|^\\s-*enum.*{\\|"
- "^\\\\[sb][a-z]*{.*}\\s-*$\\|" ; latex
- "^@node\\|@table\\|^@m?enu\\|^@itemize\\|^@if\\|" ; texinfo
- "^.+:-") ; prolog
- "*Regexps for Headings. Used by \[\[ and \]\].")
-
-(defvar vip-heading-end
- (concat "^}\\|" ; C/C++
- "^\\\\end{\\|" ; latex
- "^@end \\|" ; texinfo
- ")\n\n[ \t\n]*\\|" ; lisp
- "\\.\\s-*$") ; prolog
- "*Regexps to end Headings/Sections. Used by \[\].")
-
-
-;; These two vars control the interaction of jumps performed by ' and `.
-;; In this new version, '' doesn't erase the marks set by ``, so one can
-;; use both kinds of jumps interchangeably and without loosing positions
-;; inside the lines.
-
-;; Remembers position of the last jump done using ``'.
-(vip-deflocalvar vip-last-jump nil)
-;; Remembers position of the last jump done using `''.
-(vip-deflocalvar vip-last-jump-ignore 0)
-
-;; Some common error messages
-
-(defconst vip-SpuriousText "Spurious text after command" "")
-(defconst vip-BadExCommand "Not an editor command" "")
-(defconst vip-InvalidCommandArgument "Invalid command argument" "")
-(defconst vip-NoPrevSearch "No previous search string" "")
-(defconst vip-EmptyRegister "`%c': Nothing in this register" "")
-(defconst vip-InvalidRegister "`%c': Invalid register" "")
-(defconst vip-EmptyTextmarker "`%c': Text marker doesn't point anywhere" "")
-(defconst vip-InvalidTextmarker "`%c': Invalid text marker" "")
-(defconst vip-InvalidViCommand "Invalid command" "")
-(defconst vip-BadAddress "Ill-formed address" "")
-(defconst vip-FirstAddrExceedsSecond "First address exceeds second" "")
-(defconst vip-NoFileSpecified "No file specified" "")
-
-
-;; History variables
-
-;; History of search strings.
-(defvar vip-search-history (list ""))
-;; History of query-replace strings used as a source.
-(defvar vip-replace1-history nil)
-;; History of query-replace strings used as replacement.
-(defvar vip-replace2-history nil)
-;; History of region quoting strings.
-(defvar vip-quote-region-history (list vip-quote-string))
-;; History of Ex-style commands.
-(defvar vip-ex-history nil)
-;; History of shell commands.
-(defvar vip-shell-history nil)
-
-
-;; Last shell command. There are two of these, one for Ex (in viper-ex)
-;; and one for Vi.
-
-;; Last shell command executed with ! command.
-(defvar vip-last-shell-com nil)
-
-
-\f
-;;; Miscellaneous
-
-;; don't bark when mark is inactive
-(setq mark-even-if-inactive t)
-
-(defvar vip-inhibit-startup-message nil
- "Whether Viper startup message should be inhibited.")
-
-(defvar vip-always t
- "t means, arrange that vi-state will be a default.")
-
-(defvar vip-custom-file-name (convert-standard-filename "~/.vip")
- "Viper customisation file.
-This variable must be set _before_ loading Viper.")
-
-(defvar vip-spell-function 'ispell-region
- "Spell function used by #s<move> command to spell.")
-
-(defvar vip-tags-file-name "TAGS"
- "The tags file used by Viper.")
-
-;; Minibuffer
-
-(defvar vip-vi-style-in-minibuffer t
- "If t, use vi-style editing in minibuffer.
-Should be set in `~/.vip' file.")
-
-;; overlay used in the minibuffer to indicate which state it is in
-(vip-deflocalvar vip-minibuffer-overlay nil)
-
-;; Hook, specific to Viper, which is run just *before* exiting the minibuffer.
-;; Beginning with Emacs 19.26, the standard `minibuffer-exit-hook' is run
-;; *after* exiting the minibuffer
-(defvar vip-minibuffer-exit-hook nil)
-
-(vip-deflocalvar vip-vi-minibuffer-minor-mode nil
- "Minor mode that forces Vi-style when the Minibuffer is in Vi state.")
-(vip-deflocalvar vip-insert-minibuffer-minor-mode nil
- "Minor mode that forces Vi-style when the Minibuffer is in Insert state.")
-
-;; setup emacs-supported vi-style feel
-(setq next-line-add-newlines nil
- require-final-newline t)
-
-(make-variable-buffer-local 'require-final-newline)
-
-
-;; Mode line
-(defconst vip-vi-state-id "<V> "
- "Mode line tag identifying the Vi mode of Viper.")
-(defconst vip-emacs-state-id "<E> "
- "Mode line tag identifying the Emacs mode of Viper.")
-(defconst vip-insert-state-id "<I> "
- "Mode line tag identifying the Insert mode of Viper.")
-(defconst vip-replace-state-id "<R> "
- "Mode line tag identifying the Replace mode of Viper.")
-
-;; Viper changes the default mode-line-buffer-identification
-(setq-default mode-line-buffer-identification '(" %b"))
-
-;; Variable displaying the current Viper state in the mode line.
-(vip-deflocalvar vip-mode-string vip-emacs-state-id)
-(or (memq 'vip-mode-string global-mode-string)
- (setq global-mode-string
- (append '("" vip-mode-string) (cdr global-mode-string))))
-
-
-(defvar vip-vi-state-hook nil
- "*Hooks run just before the switch to Vi mode is completed.")
-(defvar vip-insert-state-hook nil
- "*Hooks run just before the switch to Insert mode is completed.")
-(defvar vip-replace-state-hook nil
- "*Hooks run just before the switch to Replace mode is completed.")
-(defvar vip-emacs-state-hook nil
- "*Hooks run just before the switch to Emacs mode is completed.")
-
-(defvar vip-load-hook nil
- "Hooks run just after loading Viper.")
-
-
-;; Generic predicates
-
-;; These test functions are shamelessly lifted from vip 4.4.2 by Aamod Sane
-
-;; generate test functions
-;; given symbol foo, foo-p is the test function, foos is the set of
-;; Viper command keys
-;; (macroexpand '(vip-test-com-defun foo))
-;; (defun foo-p (com) (consp (memq (if (< com 0) (- com) com) foos)))
-
-(defmacro vip-test-com-defun (name)
- (let* ((snm (symbol-name name))
- (nm-p (intern (concat snm "-p")))
- (nms (intern (concat snm "s"))))
- (` (defun (, nm-p) (com)
- (consp (memq (if (< com 0) (- com) com) (, nms)))))))
-
-;; Variables for defining VI commands
-
-;; Modifying commands that can be prefixes to movement commands
-(defconst vip-prefix-commands '(?c ?d ?y ?! ?= ?# ?< ?> ?\"))
-(vip-test-com-defun vip-prefix-command)
-
-;; Commands that are pairs eg. dd. r and R here are a hack
-(defconst vip-charpair-commands '(?c ?d ?y ?! ?= ?< ?> ?r ?R))
-(vip-test-com-defun vip-charpair-command)
-
-(defconst vip-movement-commands '(?b ?B ?e ?E ?f ?F ?G ?h ?H ?j ?k ?l
- ?H ?M ?n ?t ?T ?w ?W ?$ ?%
- ?^ ?( ?) ?- ?+ ?| ?{ ?} ?[ ?] ?' ?`
- ?; ?, ?0 ?? ?/
- )
- "Movement commands")
-(vip-test-com-defun vip-movement-command)
-
-;; Commands that can be repeated by .(dotted)
-(defconst vip-dotable-commands '(?c ?d ?C ?D ?> ?<))
-(vip-test-com-defun vip-dotable-command)
-
-;; Commands that can follow a #
-(defconst vip-hash-cmds '(?c ?C ?g ?q ?S))
-(vip-test-com-defun vip-hash-cmd)
-
-;; Commands that may have registers as prefix
-(defconst vip-regsuffix-commands '(?d ?y ?Y ?D ?p ?P ?x ?X))
-(vip-test-com-defun vip-regsuffix-command)
-
-
-\f
-;;; Arrange the keymaps
-(require 'viper-keym)
-
-\f
-;;;; CODE
-
-;; changing mode
-
-;; Change state to NEW-STATE---either emacs-state, vi-state, or insert-state.
-(defun vip-change-state (new-state)
- ;; Keep vip-post/pre-command-hooks fresh.
- ;; We remove then add vip-post/pre-command-sentinel since it is very
- ;; desirable that no one gets in-between
- (remove-hook 'post-command-hook 'vip-post-command-sentinel)
- (add-hook 'post-command-hook 'vip-post-command-sentinel)
- (remove-hook 'pre-command-hook 'vip-pre-command-sentinel)
- (add-hook 'pre-command-hook 'vip-pre-command-sentinel t)
- ;; These hooks will be added back if switching to insert/replace mode
- (vip-remove-hook 'vip-post-command-hooks
- 'vip-insert-state-post-command-sentinel)
- (vip-remove-hook 'vip-pre-command-hooks
- 'vip-insert-state-pre-command-sentinel)
- (cond ((eq new-state 'vi-state)
- (cond ((member vip-current-state '(insert-state replace-state))
-
- ;; move vip-last-posn-while-in-insert-state
- ;; This is a normal hook that is executed in insert/replace
- ;; states after each command. In Vi/Emacs state, it does
- ;; nothing. We need to execute it here to make sure that
- ;; the last posn was recorded when we hit ESC.
- ;; It may be left unrecorded if the last thing done in
- ;; insert/repl state was dabbrev-expansion or abbrev
- ;; expansion caused by hitting ESC
- (vip-insert-state-post-command-sentinel)
-
- (condition-case conds
- (progn
- (vip-save-last-insertion
- vip-insert-point
- vip-last-posn-while-in-insert-state)
- (if vip-began-as-replace
- (setq vip-began-as-replace nil)
- ;; repeat insert commands if numerical arg > 1
- (save-excursion
- (vip-repeat-insert-command))))
- (error
- (vip-message-conditions conds)))
-
- (if (> (length vip-last-insertion) 0)
- (vip-push-onto-ring vip-last-insertion
- 'vip-insertion-ring))
-
- (if vip-ex-style-editing-in-insert
- (or (bolp) (backward-char 1))))
- ))
-
- ;; insert or replace
- ((memq new-state '(insert-state replace-state))
- (if (memq vip-current-state '(emacs-state vi-state))
- (vip-move-marker-locally 'vip-insert-point (point)))
- (vip-move-marker-locally 'vip-last-posn-while-in-insert-state (point))
- (vip-add-hook 'vip-post-command-hooks
- 'vip-insert-state-post-command-sentinel t)
- (vip-add-hook 'vip-pre-command-hooks
- 'vip-insert-state-pre-command-sentinel t))
- ) ; outermost cond
-
- ;; Nothing needs to be done to switch to emacs mode! Just set some
- ;; variables, which is already done in vip-change-state-to-emacs!
-
- (setq vip-current-state new-state)
- (vip-normalize-minor-mode-map-alist)
- (vip-adjust-keys-for new-state)
- (vip-set-mode-vars-for new-state)
- (vip-refresh-mode-line)
- )
-
-
-
-(defun vip-adjust-keys-for (state)
- "Make necessary adjustments to keymaps before entering STATE."
- (cond ((memq state '(insert-state replace-state))
- (if vip-auto-indent
- (progn
- (define-key vip-insert-basic-map "\C-m" 'vip-autoindent)
- (if vip-want-emacs-keys-in-insert
- ;; expert
- (define-key vip-insert-basic-map "\C-j" nil)
- ;; novice
- (define-key vip-insert-basic-map "\C-j" 'vip-autoindent))))
-
- (setq vip-insert-diehard-minor-mode
- (not vip-want-emacs-keys-in-insert))
-
- (if vip-want-ctl-h-help
- (progn
- (define-key vip-insert-basic-map "\C-h" 'help-command)
- (define-key vip-replace-map "\C-h" 'help-command))
- (define-key vip-insert-basic-map
- "\C-h" 'vip-del-backward-char-in-insert)
- (define-key vip-replace-map
- "\C-h" 'vip-del-backward-char-in-replace)))
-
- (t
- (setq vip-vi-diehard-minor-mode (not vip-want-emacs-keys-in-vi))
- (if vip-want-ctl-h-help
- (define-key vip-vi-basic-map "\C-h" 'help-command)
- (define-key vip-vi-basic-map "\C-h" 'vip-backward-char)))
- ))
-
-
-;; Normalizes minor-mode-map-alist by putting Viper keymaps first.
-;; This ensures that Viper bindings are in effect, regardless of which minor
-;; modes were turned on by the user or by other packages.
-(defun vip-normalize-minor-mode-map-alist ()
- (setq minor-mode-map-alist
- (vip-append-filter-alist
- (list
- (cons 'vip-vi-intercept-minor-mode vip-vi-intercept-map)
- (cons 'vip-vi-minibuffer-minor-mode vip-minibuffer-map)
- (cons 'vip-vi-local-user-minor-mode vip-vi-local-user-map)
- (cons 'vip-vi-kbd-minor-mode vip-vi-kbd-map)
- (cons 'vip-vi-global-user-minor-mode vip-vi-global-user-map)
- (cons 'vip-vi-state-modifier-minor-mode
- (if (keymapp
- (cdr (assoc major-mode vip-vi-state-modifier-alist)))
- (cdr (assoc major-mode vip-vi-state-modifier-alist))
- vip-empty-keymap))
- (cons 'vip-vi-diehard-minor-mode vip-vi-diehard-map)
- (cons 'vip-vi-basic-minor-mode vip-vi-basic-map)
- (cons 'vip-insert-intercept-minor-mode vip-insert-intercept-map)
- (cons 'vip-replace-minor-mode vip-replace-map)
- ;; vip-insert-minibuffer-minor-mode must come after
- ;; vip-replace-minor-mode
- (cons 'vip-insert-minibuffer-minor-mode
- vip-minibuffer-map)
- (cons 'vip-insert-local-user-minor-mode
- vip-insert-local-user-map)
- (cons 'vip-insert-kbd-minor-mode vip-insert-kbd-map)
- (cons 'vip-insert-global-user-minor-mode
- vip-insert-global-user-map)
- (cons 'vip-insert-state-modifier-minor-mode
- (if (keymapp
- (cdr
- (assoc major-mode vip-insert-state-modifier-alist)))
- (cdr
- (assoc major-mode vip-insert-state-modifier-alist))
- vip-empty-keymap))
- (cons 'vip-insert-diehard-minor-mode vip-insert-diehard-map)
- (cons 'vip-insert-basic-minor-mode vip-insert-basic-map)
- (cons 'vip-emacs-intercept-minor-mode
- vip-emacs-intercept-map)
- (cons 'vip-emacs-local-user-minor-mode
- vip-emacs-local-user-map)
- (cons 'vip-emacs-kbd-minor-mode vip-emacs-kbd-map)
- (cons 'vip-emacs-global-user-minor-mode
- vip-emacs-global-user-map)
- (cons 'vip-emacs-state-modifier-minor-mode
- (if (keymapp
- (cdr
- (assoc major-mode vip-emacs-state-modifier-alist)))
- (cdr
- (assoc major-mode vip-emacs-state-modifier-alist))
- vip-empty-keymap))
- )
- minor-mode-map-alist)))
-
-
-
-
-\f
-;; Viper mode-changing commands and utilities
-
-;; Modifies mode-line-buffer-identification.
-(defun vip-refresh-mode-line ()
- (setq vip-mode-string
- (cond ((eq vip-current-state 'emacs-state) vip-emacs-state-id)
- ((eq vip-current-state 'vi-state) vip-vi-state-id)
- ((eq vip-current-state 'replace-state) vip-replace-state-id)
- ((eq vip-current-state 'insert-state) vip-insert-state-id)))
-
- ;; Sets Viper mode string in global-mode-string
- (force-mode-line-update))
-
-;;;###autoload
-(defun viper-mode ()
- "Turn on Viper emulation of Vi."
- (interactive)
- (if (not noninteractive)
- (progn
- (if vip-first-time ; This check is important. Without it, startup and
- (progn ; expert-level msgs mix up when viper-mode recurses
- (setq vip-first-time nil)
- (if (not vip-inhibit-startup-message)
- (save-window-excursion
- (setq vip-inhibit-startup-message t)
- (delete-other-windows)
- (switch-to-buffer "Viper Startup Message")
- (erase-buffer)
- (insert
- (substitute-command-keys
- "Viper Is a Package for Emacs Rebels.
-It is also a VI Plan for Emacs Rescue and a venomous VI PERil.
-
-Technically speaking, Viper is a Vi emulation package for GNU Emacs 19 and
-XEmacs 19. It supports virtually all of Vi and Ex functionality, extending
-and improving upon much of it.
-
- 1. Viper supports Vi at several levels. Level 1 is the closest to
- Vi, level 5 provides the most flexibility to depart from many Vi
- conventions.
-
- You will be asked to specify your user level in a following screen.
-
- If you select user level 1 then the keys ^X, ^C, ^Z, and ^G will
- behave as in VI, to smooth transition to Viper for the beginners.
- However, to use Emacs productively, you are advised to reach user
- level 3 or higher.
-
- If your user level is 2 or higher, ^X and ^C will invoke Emacs
- functions,as usual in Emacs; ^Z will toggle vi/emacs modes, and
- ^G will be the usual Emacs's keyboard-quit (something like ^C in VI).
-
- 2. Vi exit functions (e.g., :wq, ZZ) work on INDIVIDUAL files -- they
- do not cause Emacs to quit, except at user level 1 (a novice).
- 3. ^X^C EXITS EMACS.
- 4. Viper supports multiple undo: `u' will undo. Typing `.' will repeat
- undo. Another `u' changes direction.
-
- 6. Emacs Meta functions are invoked by typing `_' or `\\ ESC'.
- On a window system, the best way is to use the Meta-key.
- 7. Try \\[keyboard-quit] and \\[abort-recursive-edit] repeatedly,
- if something funny happens. This would abort the current editing
- command.
-
-You can get more information on Viper by:
-
- a. Typing `:help' in Vi state
- b. Printing Viper manual, found in ./etc/viper.dvi
- c. Printing ViperCard, the Quick Reference, found in ./etc/viperCard.dvi
-
-This startup message appears whenever you load Viper, unless you type `y' now."
- ))
- (goto-char (point-min))
- (if (y-or-n-p "Inhibit Viper startup message? ")
- (vip-save-setting
- 'vip-inhibit-startup-message
- "Viper startup message inhibited"
- vip-custom-file-name t))
- (kill-buffer (current-buffer))))
- (message " ")
- (vip-set-expert-level 'dont-change-unless)))
- (vip-change-state-to-vi))))
-
-;;;###autoload
-(defalias 'vip-mode 'viper-mode)
-
-
-;; Switch from Insert state to Vi state.
-(defun vip-exit-insert-state ()
- (interactive)
- (vip-change-state-to-vi))
-
-(defun vip-set-mode-vars-for (state)
- "Sets Viper minor mode variables to put Viper's state STATE in effect."
-
- ;; Emacs state
- (setq vip-vi-minibuffer-minor-mode nil
- vip-insert-minibuffer-minor-mode nil
- vip-vi-intercept-minor-mode nil
- vip-insert-intercept-minor-mode nil
-
- vip-vi-local-user-minor-mode nil
- vip-vi-kbd-minor-mode nil
- vip-vi-global-user-minor-mode nil
- vip-vi-state-modifier-minor-mode nil
- vip-vi-diehard-minor-mode nil
- vip-vi-basic-minor-mode nil
-
- vip-replace-minor-mode nil
-
- vip-insert-local-user-minor-mode nil
- vip-insert-kbd-minor-mode nil
- vip-insert-global-user-minor-mode nil
- vip-insert-state-modifier-minor-mode nil
- vip-insert-diehard-minor-mode nil
- vip-insert-basic-minor-mode nil
- vip-emacs-intercept-minor-mode t
- vip-emacs-local-user-minor-mode t
- vip-emacs-kbd-minor-mode (not (vip-is-in-minibuffer))
- vip-emacs-global-user-minor-mode t
- vip-emacs-state-modifier-minor-mode t
- )
-
- ;; Vi state
- (if (eq state 'vi-state) ; adjust for vi-state
- (setq
- vip-vi-intercept-minor-mode t
- vip-vi-minibuffer-minor-mode (vip-is-in-minibuffer)
- vip-vi-local-user-minor-mode t
- vip-vi-kbd-minor-mode (not (vip-is-in-minibuffer))
- vip-vi-global-user-minor-mode t
- vip-vi-state-modifier-minor-mode t
- ;; don't let the diehard keymap block command completion
- ;; and other things in the minibuffer
- vip-vi-diehard-minor-mode (not
- (or vip-want-emacs-keys-in-vi
- (vip-is-in-minibuffer)))
- vip-vi-basic-minor-mode t
- vip-emacs-intercept-minor-mode nil
- vip-emacs-local-user-minor-mode nil
- vip-emacs-kbd-minor-mode nil
- vip-emacs-global-user-minor-mode nil
- vip-emacs-state-modifier-minor-mode nil
- ))
-
- ;; Insert and Replace states
- (if (member state '(insert-state replace-state))
- (setq
- vip-insert-intercept-minor-mode t
- vip-replace-minor-mode (eq state 'replace-state)
- vip-insert-minibuffer-minor-mode (vip-is-in-minibuffer)
- vip-insert-local-user-minor-mode t
- vip-insert-kbd-minor-mode (not (vip-is-in-minibuffer))
- vip-insert-global-user-minor-mode t
- vip-insert-state-modifier-minor-mode t
- ;; don't let the diehard keymap block command completion
- ;; and other things in the minibuffer
- vip-insert-diehard-minor-mode (not
- (or vip-want-emacs-keys-in-insert
- (vip-is-in-minibuffer)))
- vip-insert-basic-minor-mode t
- vip-emacs-intercept-minor-mode nil
- vip-emacs-local-user-minor-mode nil
- vip-emacs-kbd-minor-mode nil
- vip-emacs-global-user-minor-mode nil
- vip-emacs-state-modifier-minor-mode nil
- ))
-
- ;; minibuffer faces
- (if (vip-window-display-p)
- (setq vip-minibuffer-current-face
- (cond ((eq state 'emacs-state) vip-minibuffer-emacs-face)
- ((eq state 'vi-state) vip-minibuffer-vi-face)
- ((memq state '(insert-state replace-state))
- vip-minibuffer-insert-face))))
-
- (if (vip-is-in-minibuffer)
- (vip-set-minibuffer-overlay))
- )
-
-;; This also takes care of the annoying incomplete lines in files.
-;; Also, this fixes `undo' to work vi-style for complex commands.
-(defun vip-change-state-to-vi ()
- "Change Viper state to Vi."
- (interactive)
- (if (and vip-first-time (not (vip-is-in-minibuffer)))
- (viper-mode)
- (if overwrite-mode (overwrite-mode nil))
- (if abbrev-mode (expand-abbrev))
- (if (and auto-fill-function (> (current-column) fill-column))
- (funcall auto-fill-function))
- ;; don't leave whitespace lines around
- (if (and (memq last-command
- '(vip-autoindent
- vip-open-line vip-Open-line
- vip-replace-state-exit-cmd))
- (vip-over-whitespace-line))
- (indent-to-left-margin))
- (vip-add-newline-at-eob-if-necessary)
- (if vip-undo-needs-adjustment (vip-adjust-undo))
- (vip-change-state 'vi-state)
-
- ;; always turn off iso-accents-mode, or else we won't be able to use the
- ;; keys `,',^ in Vi state, as they will do accents instead of Vi actions.
- (if (and (boundp 'iso-accents-mode) iso-accents-mode)
- (iso-accents-mode -1))
-
- ;; Protection against user errors in hooks
- (condition-case conds
- (run-hooks 'vip-vi-state-hook)
- (error
- (vip-message-conditions conds)))))
-
-(defun vip-change-state-to-insert ()
- "Change Viper state to Insert."
- (interactive)
- (vip-change-state 'insert-state)
- (if (and vip-automatic-iso-accents (fboundp 'iso-accents-mode))
- (iso-accents-mode 1)) ; turn iso accents on
-
- ;; Protection against user errors in hooks
- (condition-case conds
- (run-hooks 'vip-insert-state-hook)
- (error
- (vip-message-conditions conds))))
-
-(defsubst vip-downgrade-to-insert ()
- (setq vip-current-state 'insert-state
- vip-replace-minor-mode nil)
- )
-
-
-
-;; Change to replace state. When the end of replacement region is reached,
-;; replace state changes to insert state.
-(defun vip-change-state-to-replace (&optional non-R-cmd)
- (vip-change-state 'replace-state)
- (if (and vip-automatic-iso-accents (fboundp 'iso-accents-mode))
- (iso-accents-mode 1)) ; turn iso accents on
- ;; Run insert-state-hook
- (condition-case conds
- (run-hooks 'vip-insert-state-hook 'vip-replace-state-hook)
- (error
- (vip-message-conditions conds)))
-
- (if non-R-cmd
- (vip-start-replace)
- ;; 'R' is implemented using Emacs's overwrite-mode
- (vip-start-R-mode))
- )
-
-
-(defun vip-change-state-to-emacs ()
- "Change Viper state to Emacs."
- (interactive)
- (vip-change-state 'emacs-state)
- (if (and vip-automatic-iso-accents (fboundp 'iso-accents-mode))
- (iso-accents-mode 1)) ; turn iso accents on
-
- ;; Protection agains user errors in hooks
- (condition-case conds
- (run-hooks 'vip-emacs-state-hook)
- (error
- (vip-message-conditions conds))))
-
-;; escape to emacs mode temporarily
-(defun vip-escape-to-emacs (arg &optional events)
- "Escape to Emacs state from Vi state for one Emacs command.
-ARG is used as the prefix value for the executed command. If
-EVENTS is a list of events, which become the beginning of the command."
- (interactive "P")
- (vip-escape-to-state arg events 'emacs-state))
-
-;; escape to Vi mode temporarily
-(defun vip-escape-to-vi ()
- "Escape from Emacs state to Vi state for one Vi 1-character command.
-This doesn't work with prefix arguments or most complex commands like
-cw, dw, etc. But it does work with some 2-character commands,
-like dd or dr."
- (interactive)
- (vip-escape-to-state nil nil 'vi-state))
-
-;; Escape to STATE mode for one Emacs command.
-(defun vip-escape-to-state (arg events state)
- (let (com key prefix-arg)
- ;; this temporarily turns off Viper's minor mode keymaps
- (vip-set-mode-vars-for state)
- (vip-normalize-minor-mode-map-alist)
- (if events (vip-set-unread-command-events events))
-
- ;; protect against keyboard quit and other errors
- (condition-case nil
- (progn
- (unwind-protect
- (progn
- (setq com (key-binding (setq key
- (if vip-xemacs-p
- (read-key-sequence nil)
- (read-key-sequence nil t)))))
- ;; In case of indirection--chase definitions.
- ;; Have to do it here because we execute this command under
- ;; different keymaps, so command-execute may not do the
- ;; right thing there
- (while (vectorp com) (setq com (key-binding com))))
- nil)
- ;; exec command in the right Viper state
- ;; otherwise, if we switch buffers in the escaped command,
- ;; Viper's mode vars will remain those of `state'. When we return
- ;; to the orig buffer, the bindings will be screwed up.
- (vip-set-mode-vars-for vip-current-state)
-
- ;; this-command, last-command-char, last-command-event
- (setq this-command com)
- (if vip-xemacs-p ; XEmacs represents key sequences as vectors
- (setq last-command-event (vip-seq-last-elt key)
- last-command-char (event-to-character last-command-event))
- ;; Emacs represents them as sequences (str or vec)
- (setq last-command-event (vip-seq-last-elt key)
- last-command-char last-command-event))
-
- (if (commandp com)
- (progn
- (setq prefix-arg arg)
- (command-execute com)))
- )
- (quit (ding))
- (error (beep 1))))
- (vip-set-mode-vars-for vip-current-state)) ; set state in new buffer
-
-(defun vip-exec-form-in-emacs (form)
- "Execute FORM in Emacs, temporarily disabling Viper's minor modes.
-Similar to vip-escape-to-emacs, but accepts forms rather than keystrokes."
- (let ((buff (current-buffer))
- result)
- (vip-set-mode-vars-for 'emacs-state)
- (setq result (eval form))
- (if (not (equal buff (current-buffer))) ; cmd switched buffer
- (save-excursion
- (set-buffer buff)
- (vip-set-mode-vars-for vip-current-state)))
- (vip-set-mode-vars-for vip-current-state)
- result))
-
-
-;; This is needed because minor modes sometimes override essential Viper
-;; bindings. By letting Viper know which files these modes are in, it will
-;; arrange to reorganize minor-mode-map-alist so that things will work right.
-(defun vip-harness-minor-mode (load-file)
- "Familiarize Viper with a minor mode defined in LOAD_FILE.
-Minor modes that have their own keymaps may overshadow Viper keymaps.
-This function is designed to make Viper aware of the packages that define
-such minor modes.
-Usage:
- (vip-harness-minor-mode load-file)
-
-LOAD-FILE is a name of the file where the specific minor mode is defined.
-Suffixes such as .el or .elc should be stripped."
-
- (interactive "sEnter name of the load file: ")
-
- (vip-eval-after-load load-file '(vip-normalize-minor-mode-map-alist))
-
- ;; Change the default for minor-mode-map-alist each time a harnessed minor
- ;; mode adds its own keymap to the a-list.
- (vip-eval-after-load
- load-file '(setq-default minor-mode-map-alist minor-mode-map-alist))
- )
-
-
-(defun vip-ESC (arg)
- "Emulate ESC key in Emacs.
-Prevents multiple escape keystrokes if vip-no-multiple-ESC is true. In that
-case \@ will be bound to ESC. If vip-no-multiple-ESC is 'twice double ESC
-would dings in vi-state. Other ESC sequences are emulated via the current
-Emacs's major mode keymap. This is more convenient on dumb terminals and in
-Emacs -nw, since this won't block functional keys such as up,down,
-etc. Meta key also will work. When vip-no-multiple-ESC is nil, ESC key
-behaves as in Emacs, any number of multiple escapes is allowed."
- (interactive "P")
- (let (char)
- (cond ((and (not vip-no-multiple-ESC) (eq vip-current-state 'vi-state))
- (setq char (vip-read-char-exclusive))
- (vip-escape-to-emacs arg (list ?\e char) ))
- ((and (eq vip-no-multiple-ESC 'twice)
- (eq vip-current-state 'vi-state))
- (setq char (vip-read-char-exclusive))
- (if (= char (string-to-char vip-ESC-key))
- (ding)
- (vip-escape-to-emacs arg (list ?\e char) )))
- (t (ding)))
- ))
-
-(defun vip-alternate-ESC (arg)
- "ESC key without checking for multiple keystrokes."
- (interactive "P")
- (vip-escape-to-emacs arg '(?\e)))
-
-\f
-;; Intercept ESC sequences on dumb terminals.
-;; Based on the idea contributed by Marcelino Veiga Tuimil <mveiga@dit.upm.es>
-
-;; Check if last key was ESC and if so try to reread it as a function key.
-;; But only if there are characters to read during a very short time.
-;; Returns the last event, if any.
-(defun vip-envelop-ESC-key ()
- (let ((event last-input-event)
- (keyseq [nil])
- inhibit-quit)
- (if (vip-ESC-event-p event)
- (progn
- (if (vip-fast-keysequence-p)
- (progn
- (let (minor-mode-map-alist)
- (vip-set-unread-command-events event)
- (setq keyseq
- (funcall
- (ad-get-orig-definition 'read-key-sequence) nil))
- ) ; let
- ;; If keyseq translates into something that still has ESC
- ;; at the beginning, separate ESC from the rest of the seq.
- ;; In XEmacs we check for events that are keypress meta-key
- ;; and convert them into [escape key]
- ;;
- ;; This is needed for the following reason:
- ;; If ESC is the first symbol, we interpret it as if the
- ;; user typed ESC and then quickly some other symbols.
- ;; If ESC is not the first one, then the key sequence
- ;; entered was apparently translated into a function key or
- ;; something (e.g., one may have
- ;; (define-key function-key-map "\e[192z" [f11])
- ;; which would translate the escape-sequence generated by
- ;; f11 in an xterm window into the symbolic key f11.
- ;;
- ;; If `first-key' is not an ESC event, we make it into the
- ;; last-command-event in order to pretend that this key was
- ;; pressed. This is needed to allow arrow keys to be bound to
- ;; macros. Otherwise, vip-exec-mapped-kbd-macro will think that
- ;; the last event was ESC and so it'll execute whatever is
- ;; bound to ESC. (Viper macros can't be bound to
- ;; ESC-sequences).
- (let* ((first-key (elt keyseq 0))
- (key-mod (event-modifiers first-key)))
- (cond ((vip-ESC-event-p first-key)
- ;; put keys following ESC on the unread list
- ;; and return ESC as the key-sequence
- (vip-set-unread-command-events (subseq keyseq 1))
- (setq last-input-event event
- keyseq (if vip-emacs-p
- "\e"
- (vector (character-to-event ?\e)))))
- ((and vip-xemacs-p
- (key-press-event-p first-key)
- (equal '(meta) key-mod))
- (vip-set-unread-command-events
- (vconcat (vector
- (character-to-event (event-key first-key)))
- (subseq keyseq 1)))
- (setq last-input-event event
- keyseq (vector (character-to-event ?\e))))
- ((eventp first-key)
- (setq last-command-event first-key))
- ))
- ) ; end progn
-
- ;; this is escape event with nothing after it
- ;; put in unread-command-event and then re-read
- (vip-set-unread-command-events event)
- (setq keyseq
- (funcall (ad-get-orig-definition 'read-key-sequence) nil))
- ))
- ;; not an escape event
- (setq keyseq (vector event)))
- keyseq))
-
-
-
-(defadvice read-key-sequence (around vip-read-keyseq-ad activate)
- "Harness to work for Viper. This advice is harmless---don't worry!"
- (let (inhibit-quit event keyseq)
- (setq keyseq ad-do-it)
- (setq event (if vip-xemacs-p
- (elt keyseq 0) ; XEmacs returns vector of events
- (elt (listify-key-sequence keyseq) 0)))
- (if (vip-ESC-event-p event)
- (let (unread-command-events)
- (vip-set-unread-command-events keyseq)
- (if (vip-fast-keysequence-p)
- (let ((vip-vi-global-user-minor-mode nil)
- (vip-vi-local-user-minor-mode nil)
- (vip-replace-minor-mode nil) ; actually unnecessary
- (vip-insert-global-user-minor-mode nil)
- (vip-insert-local-user-minor-mode nil))
- (setq keyseq ad-do-it))
- (setq keyseq ad-do-it))))
- keyseq))
-
-(defadvice describe-key (before vip-read-keyseq-ad protect activate)
- "Force to read key via `read-key-sequence'."
- (interactive (list (vip-events-to-keys
- (read-key-sequence "Describe key: ")))))
-
-(defadvice describe-key-briefly (before vip-read-keyseq-ad protect activate)
- "Force to read key via `read-key-sequence'."
- (interactive (list (vip-events-to-keys
- (read-key-sequence "Describe key briefly: ")))))
-
-;; Listen to ESC key.
-;; If a sequence of keys starting with ESC is issued with very short delays,
-;; interpret these keys in Emacs mode, so ESC won't be interpreted as a Vi key.
-(defun vip-intercept-ESC-key ()
- "Function that implements ESC key in Viper emulation of Vi."
- (interactive)
- (let ((cmd (or (key-binding (vip-envelop-ESC-key))
- '(lambda () (interactive) (error "")))))
-
- ;; call the actual function to execute ESC (if no other symbols followed)
- ;; or the key bound to the ESC sequence (if the sequence was issued
- ;; with very short delay between characters.
- (if (eq cmd 'vip-intercept-ESC-key)
- (setq cmd
- (cond ((eq vip-current-state 'vi-state)
- 'vip-ESC)
- ((eq vip-current-state 'insert-state)
- 'vip-exit-insert-state)
- ((eq vip-current-state 'replace-state)
- 'vip-replace-state-exit-cmd)
- (t 'vip-change-state-to-vi)
- )))
- (call-interactively cmd)))
-
-
-\f
-;; prefix argument for Vi mode
-
-;; In Vi mode, prefix argument is a dotted pair (NUM . COM) where NUM
-;; represents the numeric value of the prefix argument and COM represents
-;; command prefix such as "c", "d", "m" and "y".
-
-;; Compute numeric prefix arg value.
-;; Invoked by CHAR. COM is the command part obtained so far.
-(defun vip-prefix-arg-value (event com)
- (let (value)
- ;; read while number
- (while (and (numberp event) (>= event ?0) (<= event ?9))
- (setq value (+ (* (if (numberp value) value 0) 10) (- event ?0)))
- (setq event (vip-read-event-convert-to-char)))
-
- (setq prefix-arg value)
- (if com (setq prefix-arg (cons prefix-arg com)))
- (while (eq event ?U)
- (vip-describe-arg prefix-arg)
- (setq event (vip-read-event-convert-to-char)))
- (vip-set-unread-command-events event)))
-
-;; Vi operator as prefix argument."
-(defun vip-prefix-arg-com (char value com)
- (let ((cont t))
- (while (and cont
- (memq char
- (list ?c ?d ?y ?! ?< ?> ?= ?# ?r ?R ?\"
- vip-buffer-search-char)))
- (if com
- ;; this means that we already have a command character, so we
- ;; construct a com list and exit while. however, if char is "
- ;; it is an error.
- (progn
- ;; new com is (CHAR . OLDCOM)
- (if (memq char '(?# ?\")) (error ""))
- (setq com (cons char com))
- (setq cont nil))
- ;; If com is nil we set com as char, and read more. Again, if char
- ;; is ", we read the name of register and store it in vip-use-register.
- ;; if char is !, =, or #, a complete com is formed so we exit the
- ;; while loop.
- (cond ((memq char '(?! ?=))
- (setq com char)
- (setq char (read-char))
- (setq cont nil))
- ((= char ?#)
- ;; read a char and encode it as com
- (setq com (+ 128 (read-char)))
- (setq char (read-char)))
- ((= char ?\")
- (let ((reg (read-char)))
- (if (vip-valid-register reg)
- (setq vip-use-register reg)
- (error ""))
- (setq char (read-char))))
- (t
- (setq com char)
- (setq char (vip-read-char-exclusive)))))))
- (if (atom com)
- ;; com is a single char, so we construct prefix-arg
- ;; and if char is ?, describe prefix arg, otherwise exit by
- ;; pushing the char back
- (progn
- (setq prefix-arg (cons value com))
- (while (= char ?U)
- (vip-describe-arg prefix-arg)
- (setq char (read-char)))
- (vip-set-unread-command-events char)
- )
- ;; as com is non-nil, this means that we have a command to execute
- (if (memq (car com) '(?r ?R))
- ;; execute appropriate region command.
- (let ((char (car com)) (com (cdr com)))
- (setq prefix-arg (cons value com))
- (if (= char ?r) (vip-region prefix-arg)
- (vip-Region prefix-arg))
- ;; reset prefix-arg
- (setq prefix-arg nil))
- ;; otherwise, reset prefix arg and call appropriate command
- (setq value (if (null value) 1 value))
- (setq prefix-arg nil)
- (cond ((equal com '(?c . ?c)) (vip-line (cons value ?C)))
- ((equal com '(?d . ?d)) (vip-line (cons value ?D)))
- ((equal com '(?d . ?y)) (vip-yank-defun))
- ((equal com '(?y . ?y)) (vip-line (cons value ?Y)))
- ((equal com '(?< . ?<)) (vip-line (cons value ?<)))
- ((equal com '(?> . ?>)) (vip-line (cons value ?>)))
- ((equal com '(?! . ?!)) (vip-line (cons value ?!)))
- ((equal com '(?= . ?=)) (vip-line (cons value ?=)))
- (t (error ""))))))
-
-(defun vip-describe-arg (arg)
- (let (val com)
- (setq val (vip-P-val arg)
- com (vip-getcom arg))
- (if (null val)
- (if (null com)
- (message "Value is nil, and command is nil")
- (message "Value is nil, and command is `%c'" com))
- (if (null com)
- (message "Value is `%d', and command is nil" val)
- (message "Value is `%d', and command is `%c'" val com)))))
-
-(defun vip-digit-argument (arg)
- "Begin numeric argument for the next command."
- (interactive "P")
- (vip-leave-region-active)
- (vip-prefix-arg-value last-command-char
- (if (consp arg) (cdr arg) nil)))
-
-(defun vip-command-argument (arg)
- "Accept a motion command as an argument."
- (interactive "P")
- (condition-case nil
- (vip-prefix-arg-com
- last-command-char
- (cond ((null arg) nil)
- ((consp arg) (car arg))
- ((numberp arg) arg)
- (t (error vip-InvalidCommandArgument)))
- (cond ((null arg) nil)
- ((consp arg) (cdr arg))
- ((numberp arg) nil)
- (t (error vip-InvalidCommandArgument))))
- (quit (setq vip-use-register nil)
- (signal 'quit nil)))
- (vip-deactivate-mark))
-
-;; Get value part of prefix-argument ARG.
-(defsubst vip-p-val (arg)
- (cond ((null arg) 1)
- ((consp arg)
- (if (or (null (car arg)) (equal (car arg) '(nil)))
- 1 (car arg)))
- (t arg)))
-
-;; Get raw value part of prefix-argument ARG.
-(defsubst vip-P-val (arg)
- (cond ((consp arg) (car arg))
- (t arg)))
-
-;; Get com part of prefix-argument ARG.
-(defsubst vip-getcom (arg)
- (cond ((null arg) nil)
- ((consp arg) (cdr arg))
- (t nil)))
-
-;; Get com part of prefix-argument ARG and modify it.
-(defun vip-getCom (arg)
- (let ((com (vip-getcom arg)))
- (cond ((equal com ?c) ?C)
- ((equal com ?d) ?D)
- ((equal com ?y) ?Y)
- (t com))))
-
-\f
-;; repeat last destructive command
-
-;; Append region to text in register REG.
-;; START and END are buffer positions indicating what to append.
-(defsubst vip-append-to-register (reg start end)
- (set-register reg (concat (if (stringp (get-register reg))
- (get-register reg) "")
- (buffer-substring start end))))
-
-;; define functions to be executed
-
-;; invoked by C command
-(defun vip-exec-change (m-com com)
- ;; handle C cmd at the eol and at eob.
- (if (or (and (eolp) (= vip-com-point (point)))
- (= vip-com-point (point-max)))
- (progn
- (insert " ")(backward-char 1)))
- (if (= vip-com-point (point))
- (vip-forward-char-carefully))
- (if (= com ?c)
- (vip-change vip-com-point (point))
- (vip-change-subr vip-com-point (point))))
-
-;; this is invoked by vip-substitute-line
-(defun vip-exec-Change (m-com com)
- (save-excursion
- (set-mark vip-com-point)
- (vip-enlarge-region (mark t) (point))
- (if vip-use-register
- (progn
- (cond ((vip-valid-register vip-use-register '(letter digit))
- ;;(vip-valid-register vip-use-register '(letter)
- (copy-to-register
- vip-use-register (mark t) (point) nil))
- ((vip-valid-register vip-use-register '(Letter))
- (vip-append-to-register
- (downcase vip-use-register) (mark t) (point)))
- (t (setq vip-use-register nil)
- (error vip-InvalidRegister vip-use-register)))
- (setq vip-use-register nil)))
- (delete-region (mark t) (point)))
- (open-line 1)
- (if (= com ?C) (vip-change-mode-to-insert) (vip-yank-last-insertion)))
-
-(defun vip-exec-delete (m-com com)
- (if vip-use-register
- (progn
- (cond ((vip-valid-register vip-use-register '(letter digit))
- ;;(vip-valid-register vip-use-register '(letter))
- (copy-to-register
- vip-use-register vip-com-point (point) nil))
- ((vip-valid-register vip-use-register '(Letter))
- (vip-append-to-register
- (downcase vip-use-register) vip-com-point (point)))
- (t (setq vip-use-register nil)
- (error vip-InvalidRegister vip-use-register)))
- (setq vip-use-register nil)))
- (setq last-command
- (if (eq last-command 'd-command) 'kill-region nil))
- (kill-region vip-com-point (point))
- (setq this-command 'd-command)
- (if vip-ex-style-motion
- (if (and (eolp) (not (bolp))) (backward-char 1))))
-
-(defun vip-exec-Delete (m-com com)
- (save-excursion
- (set-mark vip-com-point)
- (vip-enlarge-region (mark t) (point))
- (if vip-use-register
- (progn
- (cond ((vip-valid-register vip-use-register '(letter digit))
- ;;(vip-valid-register vip-use-register '(letter))
- (copy-to-register
- vip-use-register (mark t) (point) nil))
- ((vip-valid-register vip-use-register '(Letter))
- (vip-append-to-register
- (downcase vip-use-register) (mark t) (point)))
- (t (setq vip-use-register nil)
- (error vip-InvalidRegister vip-use-register)))
- (setq vip-use-register nil)))
- (setq last-command
- (if (eq last-command 'D-command) 'kill-region nil))
- (kill-region (mark t) (point))
- (if (eq m-com 'vip-line) (setq this-command 'D-command)))
- (back-to-indentation))
-
-(defun vip-exec-yank (m-com com)
- (if vip-use-register
- (progn
- (cond ((vip-valid-register vip-use-register '(letter digit))
- ;; (vip-valid-register vip-use-register '(letter))
- (copy-to-register
- vip-use-register vip-com-point (point) nil))
- ((vip-valid-register vip-use-register '(Letter))
- (vip-append-to-register
- (downcase vip-use-register) vip-com-point (point)))
- (t (setq vip-use-register nil)
- (error vip-InvalidRegister vip-use-register)))
- (setq vip-use-register nil)))
- (setq last-command nil)
- (copy-region-as-kill vip-com-point (point))
- (goto-char vip-com-point))
-
-(defun vip-exec-Yank (m-com com)
- (save-excursion
- (set-mark vip-com-point)
- (vip-enlarge-region (mark t) (point))
- (if vip-use-register
- (progn
- (cond ((vip-valid-register vip-use-register '(letter digit))
- (copy-to-register
- vip-use-register (mark t) (point) nil))
- ((vip-valid-register vip-use-register '(Letter))
- (vip-append-to-register
- (downcase vip-use-register) (mark t) (point)))
- (t (setq vip-use-register nil)
- (error vip-InvalidRegister vip-use-register)))
- (setq vip-use-register nil)))
- (setq last-command nil)
- (copy-region-as-kill (mark t) (point)))
- (vip-deactivate-mark)
- (goto-char vip-com-point))
-
-(defun vip-exec-bang (m-com com)
- (save-excursion
- (set-mark vip-com-point)
- (vip-enlarge-region (mark t) (point))
- (shell-command-on-region
- (mark t) (point)
- (if (= com ?!)
- (setq vip-last-shell-com
- (vip-read-string-with-history
- "!"
- nil
- 'vip-shell-history
- (car vip-shell-history)
- ))
- vip-last-shell-com)
- t)))
-
-(defun vip-exec-equals (m-com com)
- (save-excursion
- (set-mark vip-com-point)
- (vip-enlarge-region (mark t) (point))
- (if (> (mark t) (point)) (exchange-point-and-mark))
- (indent-region (mark t) (point) nil)))
-
-(defun vip-exec-shift (m-com com)
- (save-excursion
- (set-mark vip-com-point)
- (vip-enlarge-region (mark t) (point))
- (if (> (mark t) (point)) (exchange-point-and-mark))
- (indent-rigidly (mark t) (point)
- (if (= com ?>)
- vip-shift-width
- (- vip-shift-width))))
- ;; return point to where it was before shift
- (goto-char vip-com-point))
-
-;; this is needed because some commands fake com by setting it to ?r, which
-;; denotes repeated insert command.
-(defsubst vip-exec-dummy (m-com com)
- nil)
-
-(defun vip-exec-buffer-search (m-com com)
- (setq vip-s-string (buffer-substring (point) vip-com-point))
- (setq vip-s-forward t)
- (setq vip-search-history (cons vip-s-string vip-search-history))
- (vip-search vip-s-string vip-s-forward 1))
-
-(defvar vip-exec-array (make-vector 128 nil))
-
-;; Using a dispatch array allows adding functions like buffer search
-;; without affecting other functions. Buffer search can now be bound
-;; to any character.
-
-(aset vip-exec-array ?c 'vip-exec-change)
-(aset vip-exec-array ?C 'vip-exec-Change)
-(aset vip-exec-array ?d 'vip-exec-delete)
-(aset vip-exec-array ?D 'vip-exec-Delete)
-(aset vip-exec-array ?y 'vip-exec-yank)
-(aset vip-exec-array ?Y 'vip-exec-Yank)
-(aset vip-exec-array ?r 'vip-exec-dummy)
-(aset vip-exec-array ?! 'vip-exec-bang)
-(aset vip-exec-array ?< 'vip-exec-shift)
-(aset vip-exec-array ?> 'vip-exec-shift)
-(aset vip-exec-array ?= 'vip-exec-equals)
-
-
-
-;; This function is called by various movement commands to execute a
-;; destructive command on the region specified by the movement command. For
-;; instance, if the user types cw, then the command vip-forward-word will
-;; call vip-execute-com to execute vip-exec-change, which eventually will
-;; call vip-change to invoke the replace mode on the region.
-;;
-;; The list (M-COM VAL COM REG INSETED-TEXT COMMAND-KEYS) is set to
-;; vip-d-com for later use by vip-repeat.
-(defun vip-execute-com (m-com val com)
- (let ((reg vip-use-register))
- ;; this is the special command `#'
- (if (> com 128)
- (vip-special-prefix-com (- com 128))
- (let ((fn (aref vip-exec-array (if (< com 0) (- com) com))))
- (if (null fn)
- (error "%c: %s" com vip-InvalidViCommand)
- (funcall fn m-com com))))
- (if (vip-dotable-command-p com)
- (vip-set-destructive-command
- (list m-com val
- (if (memq com (list ?c ?C ?!)) (- com) com)
- reg nil nil)))
- ))
-
-
-(defun vip-repeat (arg)
- "Re-execute last destructive command.
-Use the info in vip-d-com, which has the form
-\(com val ch reg inserted-text command-keys\),
-where `com' is the command to be re-executed, `val' is the
-argument to `com', `ch' is a flag for repeat, and `reg' is optional;
-if it exists, it is the name of the register for `com'.
-If the prefix argument, ARG, is non-nil, it is used instead of `val'."
- (interactive "P")
- (let ((save-point (point)) ; save point before repeating prev cmd
- ;; Pass along that we are repeating a destructive command
- ;; This tells vip-set-destructive-command not to update
- ;; vip-command-ring
- (vip-intermediate-command 'vip-repeat))
- (if (eq last-command 'vip-undo)
- ;; if the last command was vip-undo, then undo-more
- (vip-undo-more)
- ;; otherwise execute the command stored in vip-d-com. if arg is non-nil
- ;; its prefix value is used as new prefix value for the command.
- (let ((m-com (car vip-d-com))
- (val (vip-P-val arg))
- (com (nth 2 vip-d-com))
- (reg (nth 3 vip-d-com)))
- (if (null val) (setq val (nth 1 vip-d-com)))
- (if (null m-com) (error "No previous command to repeat."))
- (setq vip-use-register reg)
- (if (nth 4 vip-d-com) ; text inserted by command
- (setq vip-last-insertion (nth 4 vip-d-com)
- vip-d-char (nth 4 vip-d-com)))
- (funcall m-com (cons val com))
- (if (and vip-keep-point-on-repeat (< save-point (point)))
- (goto-char save-point)) ; go back to before repeat.
- (if (and (eolp) (not (bolp)))
- (backward-char 1))
- ))
- (if vip-undo-needs-adjustment (vip-adjust-undo)) ; take care of undo
- ;; If the prev cmd was rotating the command ring, this means that `.' has
- ;; just executed a command from that ring. So, push it on the ring again.
- ;; If we are just executing previous command , then don't push vip-d-com
- ;; because vip-d-com is not fully constructed in this case (its keys and
- ;; the inserted text may be nil). Besides, in this case, the command
- ;; executed by `.' is already on the ring.
- (if (eq last-command 'vip-display-current-destructive-command)
- (vip-push-onto-ring vip-d-com 'vip-command-ring))
- (vip-deactivate-mark)
- ))
-
-(defun vip-repeat-from-history ()
- "Repeat a destructive command from history.
-Doesn't change vip-command-ring in any way, so `.' will work as before
-executing this command.
-This command is supposed to be bound to a two-character Vi macro where
-the second character is a digit 0 to 9. The digit indicates which
-history command to execute. `<char>0' is equivalent to `.', `<char>1'
-invokes the command before that, etc."
- (interactive)
- (let* ((vip-intermediate-command 'repeating-display-destructive-command)
- (idx (cond (vip-this-kbd-macro
- (string-to-number
- (symbol-name (elt vip-this-kbd-macro 1))))
- (t 0)))
- (num idx)
- (vip-d-com vip-d-com))
-
- (or (and (numberp num) (<= 0 num) (<= num 9))
- (setq idx 0
- num 0)
- (message
- "`vip-repeat-from-history' must be invoked as a Vi macro bound to `<key><digit>'"))
- (while (< 0 num)
- (setq vip-d-com (vip-special-ring-rotate1 vip-command-ring -1))
- (setq num (1- num)))
- (vip-repeat nil)
- (while (> idx num)
- (vip-special-ring-rotate1 vip-command-ring 1)
- (setq num (1+ num)))
- ))
-
-
-;; This command is invoked interactively by the key sequence #<char>
-(defun vip-special-prefix-com (char)
- (cond ((= char ?c)
- (downcase-region (min vip-com-point (point))
- (max vip-com-point (point))))
- ((= char ?C)
- (upcase-region (min vip-com-point (point))
- (max vip-com-point (point))))
- ((= char ?g)
- (push-mark vip-com-point t)
- (vip-global-execute))
- ((= char ?q)
- (push-mark vip-com-point t)
- (vip-quote-region))
- ((= char ?s) (funcall vip-spell-function vip-com-point (point)))
- (t (error "#%c: %s" char vip-InvalidViCommand))))
-
-\f
-;; undoing
-
-(defun vip-undo ()
- "Undo previous change."
- (interactive)
- (message "undo!")
- (let ((modified (buffer-modified-p))
- (before-undo-pt (point-marker))
- (after-change-functions after-change-functions)
- undo-beg-posn undo-end-posn)
-
- ;; no need to remove this hook, since this var has scope inside a let.
- (add-hook 'after-change-functions
- '(lambda (beg end len)
- (setq undo-beg-posn beg
- undo-end-posn (or end beg))))
-
- (undo-start)
- (undo-more 2)
- (setq undo-beg-posn (or undo-beg-posn before-undo-pt)
- undo-end-posn (or undo-end-posn undo-beg-posn))
-
- (goto-char undo-beg-posn)
- (sit-for 0)
- (if (and vip-keep-point-on-undo
- (pos-visible-in-window-p before-undo-pt))
- (progn
- (push-mark (point-marker) t)
- (vip-sit-for-short 300)
- (goto-char undo-end-posn)
- (vip-sit-for-short 300)
- (if (and (> (abs (- undo-beg-posn before-undo-pt)) 1)
- (> (abs (- undo-end-posn before-undo-pt)) 1))
- (goto-char before-undo-pt)
- (goto-char undo-beg-posn)))
- (push-mark before-undo-pt t))
- (if (and (eolp) (not (bolp))) (backward-char 1))
- (if (not modified) (set-buffer-modified-p t)))
- (setq this-command 'vip-undo))
-
-;; Continue undoing previous changes.
-(defun vip-undo-more ()
- (message "undo more!")
- (condition-case nil
- (undo-more 1)
- (error (beep)
- (message "No further undo information in this buffer")))
- (if (and (eolp) (not (bolp))) (backward-char 1))
- (setq this-command 'vip-undo))
-
-;; The following two functions are used to set up undo properly.
-;; In VI, unlike Emacs, if you open a line, say, and add a bunch of lines,
-;; they are undone all at once.
-(defun vip-adjust-undo ()
- (let ((inhibit-quit t)
- tmp tmp2)
- (setq vip-undo-needs-adjustment nil)
- (if (listp buffer-undo-list)
- (if (setq tmp (memq vip-buffer-undo-list-mark buffer-undo-list))
- (progn
- (setq tmp2 (cdr tmp)) ; the part after mark
-
- ;; cut tail from buffer-undo-list temporarily by direct
- ;; manipulation with pointers in buffer-undo-list
- (setcdr tmp nil)
-
- (setq buffer-undo-list (delq nil buffer-undo-list))
- (setq buffer-undo-list
- (delq vip-buffer-undo-list-mark buffer-undo-list))
- ;; restore tail of buffer-undo-list
- (setq buffer-undo-list (nconc buffer-undo-list tmp2)))
- (setq buffer-undo-list (delq nil buffer-undo-list))))))
-
-
-(defun vip-set-complex-command-for-undo ()
- (if (listp buffer-undo-list)
- (if (not vip-undo-needs-adjustment)
- (let ((inhibit-quit t))
- (setq buffer-undo-list
- (cons vip-buffer-undo-list-mark buffer-undo-list))
- (setq vip-undo-needs-adjustment t)))))
-
-
-
-
-(defun vip-display-current-destructive-command ()
- (let ((text (nth 4 vip-d-com))
- (keys (nth 5 vip-d-com))
- (max-text-len 30))
-
- (setq this-command 'vip-display-current-destructive-command)
-
- (message " `.' runs %s%s"
- (concat "`" (vip-array-to-string keys) "'")
- (vip-abbreviate-string text max-text-len
- " inserting `" "'" " ......."))
- ))
-
-
-;; don't change vip-d-com if it was vip-repeat command invoked with `.'
-;; or in some other way (non-interactively).
-(defun vip-set-destructive-command (list)
- (or (eq vip-intermediate-command 'vip-repeat)
- (progn
- (setq vip-d-com list)
- (setcar (nthcdr 5 vip-d-com)
- (vip-array-to-string (this-command-keys)))
- (vip-push-onto-ring vip-d-com 'vip-command-ring))))
-
-(defun vip-prev-destructive-command (next)
- "Find previous destructive command in the history of destructive commands.
-With prefix argument, find next destructive command."
- (interactive "P")
- (let (cmd vip-intermediate-command)
- (if (eq last-command 'vip-display-current-destructive-command)
- ;; repeated search through command history
- (setq vip-intermediate-command 'repeating-display-destructive-command)
- ;; first search through command history--set temp ring
- (setq vip-temp-command-ring (copy-list vip-command-ring)))
- (setq cmd (if next
- (vip-special-ring-rotate1 vip-temp-command-ring 1)
- (vip-special-ring-rotate1 vip-temp-command-ring -1)))
- (if (null cmd)
- ()
- (setq vip-d-com cmd))
- (vip-display-current-destructive-command)))
-
-(defun vip-next-destructive-command ()
- "Find next destructive command in the history of destructive commands."
- (interactive)
- (vip-prev-destructive-command 'next))
-
-(defun vip-insert-prev-from-insertion-ring (arg)
- "Cycle through insertion ring in the direction of older insertions.
-Undoes previous insertion and inserts new.
-With prefix argument, cycles in the direction of newer elements.
-In minibuffer, this command executes whatever the invocation key is bound
-to in the global map, instead of cycling through the insertion ring."
- (interactive "P")
- (let (vip-intermediate-command)
- (if (eq last-command 'vip-insert-from-insertion-ring)
- (progn ; repeated search through insertion history
- (setq vip-intermediate-command 'repeating-insertion-from-ring)
- (if (eq vip-current-state 'replace-state)
- (undo 1)
- (if vip-last-inserted-string-from-insertion-ring
- (backward-delete-char
- (length vip-last-inserted-string-from-insertion-ring))))
- )
- ;;first search through insertion history
- (setq vip-temp-insertion-ring (copy-list vip-insertion-ring)))
- (setq this-command 'vip-insert-from-insertion-ring)
- ;; so that things will be undone properly
- (setq buffer-undo-list (cons nil buffer-undo-list))
- (setq vip-last-inserted-string-from-insertion-ring
- (vip-special-ring-rotate1 vip-temp-insertion-ring (if arg 1 -1)))
-
- ;; this change of vip-intermediate-command must come after
- ;; vip-special-ring-rotate1, so that the ring will rotate, but before the
- ;; insertion.
- (setq vip-intermediate-command nil)
- (if vip-last-inserted-string-from-insertion-ring
- (insert vip-last-inserted-string-from-insertion-ring))
- ))
-
-(defun vip-insert-next-from-insertion-ring ()
- "Cycle through insertion ring in the direction of older insertions.
-Undo previous insertion and inserts new."
- (interactive)
- (vip-insert-prev-from-insertion-ring 'next))
-
-\f
-;; some region utilities
-
-;; If at the last line of buffer, add \\n before eob, if newline is missing.
-(defun vip-add-newline-at-eob-if-necessary ()
- (save-excursion
- (end-of-line)
- ;; make sure all lines end with newline, unless in the minibuffer or
- ;; when requested otherwise (require-final-newline is nil)
- (if (and
- (eobp)
- (not (bolp))
- require-final-newline
- (not (vip-is-in-minibuffer)))
- (insert "\n"))))
-
-(defun vip-yank-defun ()
- (mark-defun)
- (copy-region-as-kill (point) (mark t)))
-
-;; Enlarge region between BEG and END.
-(defun vip-enlarge-region (beg end)
- (or beg (setq beg end)) ; if beg is nil, set to end
- (or end (setq end beg)) ; if end is nil, set to beg
-
- (if (< beg end)
- (progn (goto-char beg) (set-mark end))
- (goto-char end)
- (set-mark beg))
- (beginning-of-line)
- (exchange-point-and-mark)
- (if (or (not (eobp)) (not (bolp))) (forward-line 1))
- (if (not (eobp)) (beginning-of-line))
- (if (> beg end) (exchange-point-and-mark)))
-
-
-;; Quote region by each line with a user supplied string.
-(defun vip-quote-region ()
- (setq vip-quote-string
- (vip-read-string-with-history
- "Quote string: "
- nil
- 'vip-quote-region-history
- vip-quote-string))
- (vip-enlarge-region (point) (mark t))
- (if (> (point) (mark t)) (exchange-point-and-mark))
- (insert vip-quote-string)
- (beginning-of-line)
- (forward-line 1)
- (while (and (< (point) (mark t)) (bolp))
- (insert vip-quote-string)
- (beginning-of-line)
- (forward-line 1)))
-
-;; Tells whether BEG is on the same line as END.
-;; If one of the args is nil, it'll return nil.
-(defun vip-same-line (beg end)
- (let ((selective-display nil))
- (cond ((and beg end)
- ;; This 'if' is needed because Emacs treats the next empty line
- ;; as part of the previous line.
- (if (or (> beg (point-max)) (> end (point-max))) ; out of range
- ()
- (if (and (> end beg) (= (vip-line-pos 'start) end))
- (setq end (min (1+ end) (point-max))))
- (if (and (> beg end) (= (vip-line-pos 'start) beg))
- (setq beg (min (1+ beg) (point-max))))
- (<= (count-lines beg end) 1) ))
-
- (t nil))
- ))
-
-
-;; Check if the string ends with a newline.
-(defun vip-end-with-a-newline-p (string)
- (or (string= string "")
- (= (vip-seq-last-elt string) ?\n)))
-
-(defun vip-tmp-insert-at-eob (msg)
- (let ((savemax (point-max)))
- (goto-char savemax)
- (insert msg)
- (sit-for 2)
- (goto-char savemax) (delete-region (point) (point-max))
- ))
-
-
-\f
-;;; Minibuffer business
-
-(defsubst vip-set-minibuffer-style ()
- (add-hook 'minibuffer-setup-hook 'vip-minibuffer-setup-sentinel))
-
-
-(defun vip-minibuffer-setup-sentinel ()
- (let ((hook (if vip-vi-style-in-minibuffer
- 'vip-change-state-to-insert
- 'vip-change-state-to-emacs)))
- (funcall hook)
-
- ;; Make sure the minibuffer overlay is kept up-to-date. In XEmacs also
- ;; guards against the possibility of detaching this overlay.
- (vip-add-hook 'vip-post-command-hooks 'vip-move-minibuffer-overlay)
- ))
-
-;; Interpret last event in the local map
-(defun vip-exit-minibuffer ()
- (interactive)
- (let (command)
- (setq command (local-key-binding (char-to-string last-command-char)))
- (if command
- (command-execute command)
- (exit-minibuffer))))
-
-
-(defun vip-set-search-face ()
- (if (not (vip-window-display-p))
- ()
- (defvar vip-search-face
- (progn
- (add-to-list 'facemenu-unlisted-faces 'vip-search-face)
- (make-face 'vip-search-face)
- (or (face-differs-from-default-p 'vip-search-face)
- ;; face wasn't set in .vip or .Xdefaults
- (if (vip-can-use-colors "Black" "khaki")
- (progn
- (set-face-background 'vip-search-face "khaki")
- (set-face-foreground 'vip-search-face "Black"))
- (copy-face 'italic 'vip-search-face)
- (set-face-underline-p 'vip-search-face t)))
- 'vip-search-face)
- "*Face used to flash out the search pattern.")
- ))
-
-
-(defun vip-set-minibuffer-faces ()
- (if (not (vip-window-display-p))
- ()
- (defvar vip-minibuffer-emacs-face
- (progn
- (add-to-list 'facemenu-unlisted-faces 'vip-minibuffer-emacs-face)
- (make-face 'vip-minibuffer-emacs-face)
- (or (face-differs-from-default-p 'vip-minibuffer-emacs-face)
- ;; face wasn't set in .vip or .Xdefaults
- (if vip-vi-style-in-minibuffer
- ;; emacs state is an exception in the minibuffer
- (if (vip-can-use-colors "darkseagreen2" "Black")
- (progn
- (set-face-background
- 'vip-minibuffer-emacs-face "darkseagreen2")
- (set-face-foreground
- 'vip-minibuffer-emacs-face "Black"))
- (copy-face 'highlight 'vip-minibuffer-emacs-face))
- ;; emacs state is the main state in the minibuffer
- (if (vip-can-use-colors "Black" "pink")
- (progn
- (set-face-background 'vip-minibuffer-emacs-face "pink")
- (set-face-foreground
- 'vip-minibuffer-emacs-face "Black"))
- (copy-face 'italic 'vip-minibuffer-emacs-face))
- ))
- 'vip-minibuffer-emacs-face)
- "Face used in the Minibuffer when it is in Emacs state.")
-
- (defvar vip-minibuffer-insert-face
- (progn
- (add-to-list 'facemenu-unlisted-faces 'vip-minibuffer-insert-face)
- (make-face 'vip-minibuffer-insert-face)
- (or (face-differs-from-default-p 'vip-minibuffer-insert-face)
- (if vip-vi-style-in-minibuffer
- (if (vip-can-use-colors "Black" "pink")
- (progn
- (set-face-background 'vip-minibuffer-insert-face "pink")
- (set-face-foreground
- 'vip-minibuffer-insert-face "Black"))
- (copy-face 'italic 'vip-minibuffer-insert-face))
- ;; If Insert state is an exception
- (if (vip-can-use-colors "darkseagreen2" "Black")
- (progn
- (set-face-background
- 'vip-minibuffer-insert-face "darkseagreen2")
- (set-face-foreground
- 'vip-minibuffer-insert-face "Black"))
- (copy-face 'highlight 'vip-minibuffer-insert-face))
- (vip-italicize-face 'vip-minibuffer-insert-face)))
- 'vip-minibuffer-insert-face)
- "Face used in the Minibuffer when it is in Insert state.")
-
- (defvar vip-minibuffer-vi-face
- (progn
- (add-to-list 'facemenu-unlisted-faces 'vip-minibuffer-vi-face)
- (make-face 'vip-minibuffer-vi-face)
- (or (face-differs-from-default-p 'vip-minibuffer-vi-face)
- (if vip-vi-style-in-minibuffer
- (if (vip-can-use-colors "Black" "grey")
- (progn
- (set-face-background 'vip-minibuffer-vi-face "grey")
- (set-face-foreground 'vip-minibuffer-vi-face "Black"))
- (copy-face 'bold 'vip-minibuffer-vi-face))
- (copy-face 'bold 'vip-minibuffer-vi-face)
- (invert-face 'vip-minibuffer-vi-face)))
- 'vip-minibuffer-vi-face)
- "Face used in the Minibuffer when it is in Vi state.")
-
- ;; the current face used in the minibuffer
- (vip-deflocalvar vip-minibuffer-current-face vip-minibuffer-emacs-face "")
- ))
-
-
-\f
-;;; Reading string with history
-
-(defun vip-read-string-with-history (prompt &optional initial
- history-var default keymap)
- ;; Reads string, prompting with PROMPT and inserting the INITIAL
- ;; value. Uses HISTORY-VAR. DEFAULT is the default value to accept if the
- ;; input is an empty string. Uses KEYMAP, if given, or the
- ;; minibuffer-local-map.
- ;; Default value is displayed until the user types something in the
- ;; minibuffer.
- (let ((minibuffer-setup-hook
- '(lambda ()
- (if (stringp initial)
- (progn
- ;; don't wait if we have unread events or in kbd macro
- (or unread-command-events
- executing-kbd-macro
- (sit-for 840))
- (erase-buffer)
- (insert initial)))
- (vip-minibuffer-setup-sentinel)))
- (val "")
- (padding "")
- temp-msg)
-
- (setq keymap (or keymap minibuffer-local-map)
- initial (or initial "")
- temp-msg (if default
- (format "(default: %s) " default)
- ""))
-
- (setq vip-incomplete-ex-cmd nil)
- (setq val (read-from-minibuffer prompt
- (concat temp-msg initial val padding)
- keymap nil history-var))
- (setq minibuffer-setup-hook nil
- padding (vip-array-to-string (this-command-keys))
- temp-msg "")
- ;; the following tries to be smart about what to put in history
- (if (not (string= val (car (eval history-var))))
- (set history-var (cons val (eval history-var))))
- (if (or (string= (nth 0 (eval history-var)) (nth 1 (eval history-var)))
- (string= (nth 0 (eval history-var)) ""))
- (set history-var (cdr (eval history-var))))
- ;; if the user enters nothing but the prev cmd wasn't vip-ex or
- ;; vip-command-argument, this means that the user typed something then
- ;; erased. Return "" in this case, not the default---default is too
- ;; confusing in this case
- (cond ((and (string= val "")
- (not (memq last-command
- (list 'vip-ex 'vip-command-argument t))))
- "")
- ((string= val "") (or default ""))
- (t val))
- ))
-
-
-\f
-;; insertion commands
-
-;; Called when state changes from Insert Vi command mode.
-;; Repeats the insertion command if Insert state was entered with prefix
-;; argument > 1.
-(defun vip-repeat-insert-command ()
- (let ((i-com (car vip-d-com))
- (val (nth 1 vip-d-com))
- (char (nth 2 vip-d-com)))
- (if (and val (> val 1)) ; first check that val is non-nil
- (progn
- (setq vip-d-com (list i-com (1- val) ?r nil nil nil))
- (vip-repeat nil)
- (setq vip-d-com (list i-com val char nil nil nil))
- ))))
-
-(defun vip-insert (arg)
- "Insert before point."
- (interactive "P")
- (vip-set-complex-command-for-undo)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (vip-set-destructive-command (list 'vip-insert val ?r nil nil nil))
- (if com
- (vip-loop val (vip-yank-last-insertion))
- (vip-change-state-to-insert))))
-
-(defun vip-append (arg)
- "Append after point."
- (interactive "P")
- (vip-set-complex-command-for-undo)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (vip-set-destructive-command (list 'vip-append val ?r nil nil nil))
- (if (not (eolp)) (forward-char))
- (if (equal com ?r)
- (vip-loop val (vip-yank-last-insertion))
- (vip-change-state-to-insert))))
-
-(defun vip-Append (arg)
- "Append at end of line."
- (interactive "P")
- (vip-set-complex-command-for-undo)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (vip-set-destructive-command (list 'vip-Append val ?r nil nil nil))
- (end-of-line)
- (if (equal com ?r)
- (vip-loop val (vip-yank-last-insertion))
- (vip-change-state-to-insert))))
-
-(defun vip-Insert (arg)
- "Insert before first non-white."
- (interactive "P")
- (vip-set-complex-command-for-undo)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (vip-set-destructive-command (list 'vip-Insert val ?r nil nil nil))
- (back-to-indentation)
- (if (equal com ?r)
- (vip-loop val (vip-yank-last-insertion))
- (vip-change-state-to-insert))))
-
-(defun vip-open-line (arg)
- "Open line below."
- (interactive "P")
- (vip-set-complex-command-for-undo)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (vip-set-destructive-command (list 'vip-open-line val ?r nil nil nil))
- (let ((col (current-indentation)))
- (if (equal com ?r)
- (vip-loop val
- (progn
- (end-of-line)
- (newline 1)
- (if vip-auto-indent
- (progn (setq vip-cted t) (indent-to col)))
- (vip-yank-last-insertion)))
- (end-of-line)
- (newline 1)
- (if vip-auto-indent (progn (setq vip-cted t) (indent-to col)))
- (vip-change-state-to-insert)
- ))))
-
-(defun vip-Open-line (arg)
- "Open line above."
- (interactive "P")
- (vip-set-complex-command-for-undo)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (vip-set-destructive-command (list 'vip-Open-line val ?r nil nil nil))
- (let ((col (current-indentation)))
- (if (equal com ?r)
- (vip-loop val
- (progn
- (beginning-of-line)
- (open-line 1)
- (if vip-auto-indent
- (progn (setq vip-cted t) (indent-to col)))
- (vip-yank-last-insertion)))
- (beginning-of-line)
- (open-line 1)
- (if vip-auto-indent (progn (setq vip-cted t) (indent-to col)))
- (vip-change-state-to-insert)))))
-
-(defun vip-open-line-at-point (arg)
- "Open line at point."
- (interactive "P")
- (vip-set-complex-command-for-undo)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (vip-set-destructive-command
- (list 'vip-open-line-at-point val ?r nil nil nil))
- (if (equal com ?r)
- (vip-loop val
- (progn
- (open-line 1)
- (vip-yank-last-insertion)))
- (open-line 1)
- (vip-change-state-to-insert))))
-
-(defun vip-substitute (arg)
- "Substitute characters."
- (interactive "P")
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (push-mark nil t)
- (forward-char val)
- (if (equal com ?r)
- (vip-change-subr (mark t) (point))
- (vip-change (mark t) (point)))
- (vip-set-destructive-command (list 'vip-substitute val ?r nil nil nil))
- ))
-
-(defun vip-substitute-line (arg)
- "Substitute lines."
- (interactive "p")
- (vip-set-complex-command-for-undo)
- (vip-line (cons arg ?C)))
-
-;; Prepare for replace
-(defun vip-start-replace ()
- (setq vip-began-as-replace t
- vip-sitting-in-replace t
- vip-replace-chars-to-delete 0
- vip-replace-chars-deleted 0)
- (vip-add-hook 'vip-after-change-functions 'vip-replace-mode-spy-after t)
- (vip-add-hook 'vip-before-change-functions 'vip-replace-mode-spy-before t)
- ;; this will get added repeatedly, but no harm
- (add-hook 'after-change-functions 'vip-after-change-sentinel t)
- (add-hook 'before-change-functions 'vip-before-change-sentinel t)
- (vip-move-marker-locally 'vip-last-posn-in-replace-region
- (vip-replace-start))
- (vip-add-hook
- 'vip-post-command-hooks 'vip-replace-state-post-command-sentinel t)
- (vip-add-hook
- 'vip-pre-command-hooks 'vip-replace-state-pre-command-sentinel t)
- )
-
-;; Runs vip-after-change-functions inside after-change-functions
-(defun vip-after-change-sentinel (beg end len)
- (let ((list vip-after-change-functions))
- (while list
- (funcall (car list) beg end len)
- (setq list (cdr list)))))
-
-;; Runs vip-before-change-functions inside before-change-functions
-(defun vip-before-change-sentinel (beg end)
- (let ((list vip-before-change-functions))
- (while list
- (funcall (car list) beg end)
- (setq list (cdr list)))))
-
-(defsubst vip-post-command-sentinel ()
- (run-hooks 'vip-post-command-hooks))
-
-(defsubst vip-pre-command-sentinel ()
- (run-hooks 'vip-pre-command-hooks))
-
-;; Needed so that Viper will be able to figure the last inserted
-;; chunk of text with reasonable accuracy.
-(defsubst vip-insert-state-post-command-sentinel ()
- (if (and (memq vip-current-state '(insert-state replace-state))
- vip-insert-point
- (>= (point) vip-insert-point))
- (setq vip-last-posn-while-in-insert-state (point-marker)))
- (if (and (eq this-command 'dabbrev-expand)
- (integerp vip-pre-command-point)
- (> vip-insert-point vip-pre-command-point))
- (move-marker vip-insert-point vip-pre-command-point))
- )
-
-(defsubst vip-insert-state-pre-command-sentinel ()
- (if (and (eq this-command 'dabbrev-expand)
- (markerp vip-insert-point)
- (marker-position vip-insert-point))
- (setq vip-pre-command-point (marker-position vip-insert-point))))
-
-(defsubst vip-R-state-post-command-sentinel ()
- ;; Restoring cursor color is needed despite
- ;; vip-replace-state-pre-command-sentinel: When you jump to another buffer in
- ;; another frame, the pre-command hook won't change cursor color to default
- ;; in that other frame. So, if the second frame cursor was red and we set
- ;; the point outside the replacement region, then the cursor color will
- ;; remain red. Restoring the default, below, prevents this.
- (if (and (<= (vip-replace-start) (point))
- (<= (point) (vip-replace-end)))
- (vip-change-cursor-color vip-replace-overlay-cursor-color)
- (vip-restore-cursor-color)
- ))
-
-;; to speed up, don't change cursor color before self-insert
-;; and common move commands
-(defsubst vip-replace-state-pre-command-sentinel ()
- (or (memq this-command '(self-insert-command))
- (memq (vip-event-key last-command-event)
- '(up down left right (meta f) (meta b)
- (control n) (control p) (control f) (control b)))
- (vip-restore-cursor-color)))
-
-(defun vip-replace-state-post-command-sentinel ()
- ;; Restoring cursor color is needed despite
- ;; vip-replace-state-pre-command-sentinel: When one jumps to another buffer
- ;; in another frame, the pre-command hook won't change cursor color to
- ;; default in that other frame. So, if the second frame cursor was red and
- ;; we set the point outside the replacement region, then the cursor color
- ;; will remain red. Restoring the default, below, fixes this problem.
- ;;
- ;; We optimize for self-insert-command's here, since they either don't change
- ;; cursor color or, if they terminate replace mode, the color will be changed
- ;; in vip-finish-change
- (or (memq this-command '(self-insert-command))
- (vip-restore-cursor-color))
- (cond
- ((eq vip-current-state 'replace-state)
- ;; delete characters to compensate for inserted chars.
- (let ((replace-boundary (vip-replace-end)))
- (save-excursion
- (goto-char vip-last-posn-in-replace-region)
- (delete-char vip-replace-chars-to-delete)
- (setq vip-replace-chars-to-delete 0
- vip-replace-chars-deleted 0)
- ;; terminate replace mode if reached replace limit
- (if (= vip-last-posn-in-replace-region
- (vip-replace-end))
- (vip-finish-change vip-last-posn-in-replace-region)))
-
- (if (and (<= (vip-replace-start) (point))
- (<= (point) replace-boundary))
- (progn
- ;; the state may have changed in vip-finish-change above
- (if (eq vip-current-state 'replace-state)
- (vip-change-cursor-color vip-replace-overlay-cursor-color))
- (setq vip-last-posn-in-replace-region (point-marker))))
- ))
-
- (t ;; terminate replace mode if changed Viper states.
- (vip-finish-change vip-last-posn-in-replace-region))))
-
-
-;; checks how many chars were deleted by the last change
-(defun vip-replace-mode-spy-before (beg end)
- (setq vip-replace-chars-deleted
- (- end beg
- (max 0 (- end (vip-replace-end)))
- (max 0 (- (vip-replace-start) beg))
- )))
-
-;; Invoked as an after-change-function to set up parameters of the last change
-(defun vip-replace-mode-spy-after (beg end length)
- (if (memq vip-intermediate-command '(repeating-insertion-from-ring))
- (progn
- (setq vip-replace-chars-to-delete 0)
- (vip-move-marker-locally
- 'vip-last-posn-in-replace-region (point)))
-
- (let (beg-col end-col real-end chars-to-delete)
- (setq real-end (min end (vip-replace-end)))
- (save-excursion
- (goto-char beg)
- (setq beg-col (current-column))
- (goto-char real-end)
- (setq end-col (current-column)))
-
- ;; If beg of change is outside the replacement region, then don't
- ;; delete anything in the repl region (set chars-to-delete to 0).
- ;;
- ;; This works fine except that we have to take special care of
- ;; dabbrev-expand. The problem stems from new-dabbrev.el, which
- ;; sometimes simply shifts the repl region rightwards, without
- ;; deleting an equal amount of characters.
- ;;
- ;; The reason why new-dabbrev.el causes this are this:
- ;; if one dynamically completes a partial word that starts before the
- ;; replacement region (but ends inside)then new-dabbrev.el first
- ;; moves cursor backwards, to the beginning of the word to be
- ;; completed (say, pt A). Then it inserts the
- ;; completed word and then deletes the old, incomplete part.
- ;; Since the complete word is inserted at position before the repl
- ;; region, the next If-statement would have set chars-to-delete to 0
- ;; unless we check for the current command, which must be
- ;; dabbrev-expand.
- ;;
- ;; We should be able deal with these problems in a better way
- ;; when emacs will have overlays with sticky back ends.
- ;; In fact, it would be also useful to add overlays for insert
- ;; regions as well, since this will let us capture the situation when
- ;; dabbrev-expand goes back past the insertion point to find the
- ;; beginning of the word to be expanded.
- (if (or (and (<= (vip-replace-start) beg)
- (<= beg (vip-replace-end)))
- (and (= length 0) (eq this-command 'dabbrev-expand)))
- (setq chars-to-delete
- (max (- end-col beg-col) (- real-end beg) 0))
- (setq chars-to-delete 0))
-
- ;; if beg = last change position, it means that we are within the
- ;; same command that does multiple changes. Moreover, it means
- ;; that we have two subsequent changes (insert/delete) that
- ;; complement each other.
- (if (= beg (marker-position vip-last-posn-in-replace-region))
- (setq vip-replace-chars-to-delete
- (- (+ chars-to-delete vip-replace-chars-to-delete)
- vip-replace-chars-deleted))
- (setq vip-replace-chars-to-delete chars-to-delete))
-
- (vip-move-marker-locally
- 'vip-last-posn-in-replace-region
- (max (if (> end (vip-replace-end)) (vip-replace-start) end)
- (or (marker-position vip-last-posn-in-replace-region)
- (vip-replace-start))
- ))
-
- (setq vip-replace-chars-to-delete
- (max 0 (min vip-replace-chars-to-delete
- (- (vip-replace-end)
- vip-last-posn-in-replace-region))))
- )))
-
-
-;; Delete stuff between posn and the end of vip-replace-overlay-marker, if
-;; posn is within the overlay.
-(defun vip-finish-change (posn)
- (vip-remove-hook 'vip-after-change-functions 'vip-replace-mode-spy-after)
- (vip-remove-hook 'vip-before-change-functions 'vip-replace-mode-spy-before)
- (vip-remove-hook 'vip-post-command-hooks
- 'vip-replace-state-post-command-sentinel)
- (vip-remove-hook
- 'vip-pre-command-hooks 'vip-replace-state-pre-command-sentinel)
- (vip-restore-cursor-color)
- (setq vip-sitting-in-replace nil) ; just in case we'll need to know it
- (save-excursion
- (if (and
- vip-replace-overlay
- (>= posn (vip-replace-start))
- (< posn (vip-replace-end)))
- (delete-region posn (vip-replace-end)))
- )
-
- (if (eq vip-current-state 'replace-state)
- (vip-downgrade-to-insert))
- ;; replace mode ended => nullify vip-last-posn-in-replace-region
- (vip-move-marker-locally 'vip-last-posn-in-replace-region nil)
- (vip-hide-replace-overlay)
- (vip-refresh-mode-line)
- (vip-put-string-on-kill-ring vip-last-replace-region)
- )
-
-;; Make STRING be the first element of the kill ring.
-(defun vip-put-string-on-kill-ring (string)
- (setq kill-ring (cons string kill-ring))
- (if (> (length kill-ring) kill-ring-max)
- (setcdr (nthcdr (1- kill-ring-max) kill-ring) nil))
- (setq kill-ring-yank-pointer kill-ring))
-
-(defun vip-finish-R-mode ()
- (vip-remove-hook 'vip-post-command-hooks 'vip-R-state-post-command-sentinel)
- (vip-remove-hook
- 'vip-pre-command-hooks 'vip-replace-state-pre-command-sentinel)
- (vip-downgrade-to-insert))
-
-(defun vip-start-R-mode ()
- ;; Leave arg as 1, not t: XEmacs insists that it must be a pos number
- (overwrite-mode 1)
- (vip-add-hook
- 'vip-post-command-hooks 'vip-R-state-post-command-sentinel t)
- (vip-add-hook
- 'vip-pre-command-hooks 'vip-replace-state-pre-command-sentinel t)
- )
-
-
-
-(defun vip-replace-state-exit-cmd ()
- "Binding for keys that cause Replace state to switch to Vi or to Insert.
-These keys are ESC, RET, and LineFeed"
- (interactive)
- (if overwrite-mode ;; If you are in replace mode invoked via 'R'
- (vip-finish-R-mode)
- (vip-finish-change vip-last-posn-in-replace-region))
- (let (com)
- (if (eq this-command 'vip-intercept-ESC-key)
- (setq com 'vip-exit-insert-state)
- (vip-set-unread-command-events last-input-char)
- (setq com (key-binding (read-key-sequence nil))))
-
- (condition-case conds
- (command-execute com)
- (error
- (vip-message-conditions conds)))
- )
- (vip-hide-replace-overlay))
-
-
-;; This is the function bound to 'R'---unlimited replace.
-;; Similar to Emacs's own overwrite-mode.
-(defun vip-overwrite (arg)
- "Begin overwrite mode."
- (interactive "P")
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)) (len))
- (vip-set-destructive-command (list 'vip-overwrite val ?r nil nil nil))
- (if com
- (progn
- ;; Viper saves inserted text in vip-last-insertion
- (setq len (length vip-last-insertion))
- (delete-char len)
- (vip-loop val (vip-yank-last-insertion)))
- (setq last-command 'vip-overwrite)
- (vip-set-complex-command-for-undo)
- (vip-set-replace-overlay (point) (vip-line-pos 'end))
- (vip-change-state-to-replace)
- )))
-
-\f
-;; line commands
-
-(defun vip-line (arg)
- (let ((val (car arg))
- (com (cdr arg)))
- (vip-move-marker-locally 'vip-com-point (point))
- (if (not (eobp))
- (vip-next-line-carefully (1- val)))
- ;; this ensures that dd, cc, D, yy will do the right thing on the last
- ;; line of buffer when this line has no \n.
- (vip-add-newline-at-eob-if-necessary)
- (vip-execute-com 'vip-line val com))
- (if (and (eobp) (not (bobp))) (forward-line -1))
- )
-
-(defun vip-yank-line (arg)
- "Yank ARG lines (in Vi's sense)."
- (interactive "P")
- (let ((val (vip-p-val arg)))
- (vip-line (cons val ?Y))))
-
-\f
-;; region commands
-
-(defun vip-region (arg)
- "Execute command on a region."
- (interactive "P")
- (let ((val (vip-P-val arg))
- (com (vip-getcom arg)))
- (vip-move-marker-locally 'vip-com-point (point))
- (exchange-point-and-mark)
- (vip-execute-com 'vip-region val com)))
-
-(defun vip-Region (arg)
- "Execute command on a Region."
- (interactive "P")
- (let ((val (vip-P-val arg))
- (com (vip-getCom arg)))
- (vip-move-marker-locally 'vip-com-point (point))
- (exchange-point-and-mark)
- (vip-execute-com 'vip-Region val com)))
-
-(defun vip-replace-char (arg)
- "Replace the following ARG chars by the character read."
- (interactive "P")
- (if (and (eolp) (bolp)) (error "No character to replace here"))
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (vip-replace-char-subr com val)
- (if (and (eolp) (not (bolp))) (forward-char 1))
- (vip-set-destructive-command
- (list 'vip-replace-char val ?r nil vip-d-char nil))
- ))
-
-(defun vip-replace-char-subr (com arg)
- (let ((take-care-of-iso-accents
- (and (boundp 'iso-accents-mode) vip-automatic-iso-accents))
- char)
- (setq char (if (equal com ?r)
- vip-d-char
- (read-char)))
- (if (and take-care-of-iso-accents (memq char '(?' ?\" ?^ ?~)))
- ;; get European characters
- (progn
- (iso-accents-mode 1)
- (vip-set-unread-command-events char)
- (setq char (aref (read-key-sequence nil) 0))
- (iso-accents-mode -1)))
- (delete-char arg t)
- (setq vip-d-char char)
- (vip-loop (if (> arg 0) arg (- arg))
- (if (eq char ?\C-m) (insert "\n") (insert char)))
- (backward-char arg)))
-
-\f
-;; basic cursor movement. j, k, l, h commands.
-
-(defun vip-forward-char (arg)
- "Move point right ARG characters (left if ARG negative).
-On reaching end of line, stop and signal error."
- (interactive "P")
- (vip-leave-region-active)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (if vip-ex-style-motion
- (progn
- ;; the boundary condition check gets weird here because
- ;; forward-char may be the parameter of a delete, and 'dl' works
- ;; just like 'x' for the last char on a line, so we have to allow
- ;; the forward motion before the 'vip-execute-com', but, of
- ;; course, 'dl' doesn't work on an empty line, so we have to
- ;; catch that condition before 'vip-execute-com'
- (if (and (eolp) (bolp)) (error "") (forward-char val))
- (if com (vip-execute-com 'vip-forward-char val com))
- (if (eolp) (progn (backward-char 1) (error ""))))
- (forward-char val)
- (if com (vip-execute-com 'vip-forward-char val com)))))
-
-(defun vip-backward-char (arg)
- "Move point left ARG characters (right if ARG negative).
-On reaching beginning of line, stop and signal error."
- (interactive "P")
- (vip-leave-region-active)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (if vip-ex-style-motion
- (progn
- (if (bolp) (error "") (backward-char val))
- (if com (vip-execute-com 'vip-backward-char val com)))
- (backward-char val)
- (if com (vip-execute-com 'vip-backward-char val com)))))
-
-;; Like forward-char, but doesn't move at end of buffer.
-(defun vip-forward-char-carefully (&optional arg)
- (setq arg (or arg 1))
- (if (>= (point-max) (+ (point) arg))
- (forward-char arg)
- (goto-char (point-max))))
-
-;; Like backward-char, but doesn't move at end of buffer.
-(defun vip-backward-char-carefully (&optional arg)
- (setq arg (or arg 1))
- (if (<= (point-min) (- (point) arg))
- (backward-char arg)
- (goto-char (point-min))))
-
-(defun vip-next-line-carefully (arg)
- (condition-case nil
- (next-line arg)
- (error nil)))
-
-
-\f
-;;; Word command
-
-;; Words are formed from alpha's and nonalphas - <sp>,\t\n are separators
-;; for word movement. When executed with a destructive command, \n is
-;; usually left untouched for the last word.
-;; Viper uses syntax table to determine what is a word and what is a
-;; separator. However, \n is always a separator. Also, if vip-syntax-preference
-;; is 'vi, then `_' is part of the word.
-
-;; skip only one \n
-(defun vip-skip-separators (forward)
- (if forward
- (progn
- (vip-skip-all-separators-forward 'within-line)
- (if (looking-at "\n")
- (progn
- (forward-char)
- (vip-skip-all-separators-forward 'within-line))))
- (vip-skip-all-separators-backward 'within-line)
- (backward-char)
- (if (looking-at "\n")
- (vip-skip-all-separators-backward 'within-line)
- (forward-char))))
-
-(defun vip-forward-word-kernel (val)
- (while (> val 0)
- (cond ((vip-looking-at-alpha)
- (vip-skip-alpha-forward "_")
- (vip-skip-separators t))
- ((vip-looking-at-separator)
- (vip-skip-separators t))
- ((not (vip-looking-at-alphasep))
- (vip-skip-nonalphasep-forward)
- (vip-skip-separators t)))
- (setq val (1- val))))
-
-;; first search backward for pat. Then skip chars backwards using aux-pat
-(defun vip-fwd-skip (pat aux-pat lim)
- (if (and (save-excursion
- (re-search-backward pat lim t))
- (= (point) (match-end 0)))
- (goto-char (match-beginning 0)))
- (skip-chars-backward aux-pat lim)
- (if (= (point) lim)
- (vip-forward-char-carefully))
- )
-
-
-(defun vip-forward-word (arg)
- "Forward word."
- (interactive "P")
- (vip-leave-region-active)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (vip-forward-word-kernel val)
- (if com (progn
- (cond ((memq com (list ?c (- ?c)))
- (vip-fwd-skip "\n[ \t]*" " \t" vip-com-point))
- ;; Yank words including the whitespace, but not newline
- ((memq com (list ?y (- ?y)))
- (vip-fwd-skip "\n[ \t]*" "" vip-com-point))
- ((vip-dotable-command-p com)
- (vip-fwd-skip "\n[ \t]*" "" vip-com-point)))
- (vip-execute-com 'vip-forward-word val com)))))
-
-
-(defun vip-forward-Word (arg)
- "Forward word delimited by white characters."
- (interactive "P")
- (vip-leave-region-active)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (vip-loop val
- (progn
- (vip-skip-nonseparators 'forward)
- (vip-skip-separators t)))
- (if com (progn
- (cond ((memq com (list ?c (- ?c)))
- (vip-fwd-skip "\n[ \t]*" " \t" vip-com-point))
- ;; Yank words including the whitespace, but not newline
- ((memq com (list ?y (- ?y)))
- (vip-fwd-skip "\n[ \t]*" "" vip-com-point))
- ((vip-dotable-command-p com)
- (vip-fwd-skip "\n[ \t]*" "" vip-com-point)))
- (vip-execute-com 'vip-forward-Word val com)))))
-
-
-;; this is a bit different from Vi, but Vi's end of word
-;; makes no sense whatsoever
-(defun vip-end-of-word-kernel ()
- (if (vip-end-of-word-p) (forward-char))
- (if (vip-looking-at-separator)
- (vip-skip-all-separators-forward))
-
- (cond ((vip-looking-at-alpha) (vip-skip-alpha-forward "_"))
- ((not (vip-looking-at-alphasep)) (vip-skip-nonalphasep-forward)))
- (vip-backward-char-carefully))
-
-(defun vip-end-of-word-p ()
- (or (eobp)
- (save-excursion
- (cond ((vip-looking-at-alpha)
- (forward-char)
- (not (vip-looking-at-alpha)))
- ((not (vip-looking-at-alphasep))
- (forward-char)
- (vip-looking-at-alphasep))))))
-
-
-(defun vip-end-of-word (arg &optional careful)
- "Move point to end of current word."
- (interactive "P")
- (vip-leave-region-active)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (vip-loop val (vip-end-of-word-kernel))
- (if com
- (progn
- (forward-char)
- (vip-execute-com 'vip-end-of-word val com)))))
-
-(defun vip-end-of-Word (arg)
- "Forward to end of word delimited by white character."
- (interactive "P")
- (vip-leave-region-active)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (vip-loop val
- (progn
- (vip-end-of-word-kernel)
- (vip-skip-nonseparators 'forward)
- (backward-char)))
- (if com
- (progn
- (forward-char)
- (vip-execute-com 'vip-end-of-Word val com)))))
-
-(defun vip-backward-word-kernel (val)
- (while (> val 0)
- (backward-char)
- (cond ((vip-looking-at-alpha)
- (vip-skip-alpha-backward "_"))
- ((vip-looking-at-separator)
- (forward-char)
- (vip-skip-separators nil)
- (backward-char)
- (cond ((vip-looking-at-alpha)
- (vip-skip-alpha-backward "_"))
- ((not (vip-looking-at-alphasep))
- (vip-skip-nonalphasep-backward))
- (t (forward-char))))
- ((not (vip-looking-at-alphasep))
- (vip-skip-nonalphasep-backward)))
- (setq val (1- val))))
-
-(defun vip-backward-word (arg)
- "Backward word."
- (interactive "P")
- (vip-leave-region-active)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if com
- (let (i)
- (if (setq i (save-excursion (backward-char) (looking-at "\n")))
- (backward-char))
- (vip-move-marker-locally 'vip-com-point (point))
- (if i (forward-char))))
- (vip-backward-word-kernel val)
- (if com (vip-execute-com 'vip-backward-word val com))))
-
-(defun vip-backward-Word (arg)
- "Backward word delimited by white character."
- (interactive "P")
- (vip-leave-region-active)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if com
- (let (i)
- (if (setq i (save-excursion (backward-char) (looking-at "\n")))
- (backward-char))
- (vip-move-marker-locally 'vip-com-point (point))
- (if i (forward-char))))
- (vip-loop val
- (progn
- (vip-skip-separators nil)
- (vip-skip-nonseparators 'backward)))
- (if com (vip-execute-com 'vip-backward-Word val com))))
-
-
-\f
-;; line commands
-
-(defun vip-beginning-of-line (arg)
- "Go to beginning of line."
- (interactive "P")
- (vip-leave-region-active)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (beginning-of-line val)
- (if com (vip-execute-com 'vip-beginning-of-line val com))))
-
-(defun vip-bol-and-skip-white (arg)
- "Beginning of line at first non-white character."
- (interactive "P")
- (vip-leave-region-active)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (forward-to-indentation (1- val))
- (if com (vip-execute-com 'vip-bol-and-skip-white val com))))
-
-(defun vip-goto-eol (arg)
- "Go to end of line."
- (interactive "P")
- (vip-leave-region-active)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (end-of-line val)
- (if com (vip-execute-com 'vip-goto-eol val com))
- (if vip-ex-style-motion
- (if (and (eolp) (not (bolp))
- ;; a fix for vip-change-to-eol
- (not (equal vip-current-state 'insert-state)))
- (backward-char 1)
- ))))
-
-
-(defun vip-goto-col (arg)
- "Go to ARG's column."
- (interactive "P")
- (vip-leave-region-active)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (save-excursion
- (end-of-line)
- (if (> val (1+ (current-column))) (error "")))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (beginning-of-line)
- (forward-char (1- val))
- (if com (vip-execute-com 'vip-goto-col val com))))
-
-
-(defun vip-next-line (arg)
- "Go to next line."
- (interactive "P")
- (vip-leave-region-active)
- (let ((val (vip-p-val arg))
- (com (vip-getCom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (next-line val)
- (if vip-ex-style-motion
- (if (and (eolp) (not (bolp))) (backward-char 1)))
- (setq this-command 'next-line)
- (if com (vip-execute-com 'vip-next-line val com))))
-
-(defun vip-next-line-at-bol (arg)
- "Next line at beginning of line."
- (interactive "P")
- (vip-leave-region-active)
- (save-excursion
- (end-of-line)
- (if (eobp) (error "Last line in buffer")))
- (let ((val (vip-p-val arg))
- (com (vip-getCom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (forward-line val)
- (back-to-indentation)
- (if com (vip-execute-com 'vip-next-line-at-bol val com))))
-
-(defun vip-previous-line (arg)
- "Go to previous line."
- (interactive "P")
- (vip-leave-region-active)
- (let ((val (vip-p-val arg))
- (com (vip-getCom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (previous-line val)
- (if vip-ex-style-motion
- (if (and (eolp) (not (bolp))) (backward-char 1)))
- (setq this-command 'previous-line)
- (if com (vip-execute-com 'vip-previous-line val com))))
-
-
-(defun vip-previous-line-at-bol (arg)
- "Previous line at beginning of line."
- (interactive "P")
- (vip-leave-region-active)
- (save-excursion
- (beginning-of-line)
- (if (bobp) (error "First line in buffer")))
- (let ((val (vip-p-val arg))
- (com (vip-getCom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (forward-line (- val))
- (back-to-indentation)
- (if com (vip-execute-com 'vip-previous-line val com))))
-
-(defun vip-change-to-eol (arg)
- "Change to end of line."
- (interactive "P")
- (vip-goto-eol (cons arg ?c)))
-
-(defun vip-kill-line (arg)
- "Delete line."
- (interactive "P")
- (vip-goto-eol (cons arg ?d)))
-
-(defun vip-erase-line (arg)
- "Erase line."
- (interactive "P")
- (vip-beginning-of-line (cons arg ?d)))
-
-\f
-;;; Moving around
-
-(defun vip-goto-line (arg)
- "Go to ARG's line. Without ARG go to end of buffer."
- (interactive "P")
- (let ((val (vip-P-val arg))
- (com (vip-getCom arg)))
- (vip-move-marker-locally 'vip-com-point (point))
- (vip-deactivate-mark)
- (push-mark nil t)
- (if (null val)
- (goto-char (point-max))
- (goto-char (point-min))
- (forward-line (1- val)))
-
- ;; positioning is done twice: before and after command execution
- (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
- (back-to-indentation)
-
- (if com (vip-execute-com 'vip-goto-line val com))
-
- (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
- (back-to-indentation)
- ))
-
-;; Find ARG's occurrence of CHAR on the current line.
-;; If FORWARD then search is forward, otherwise backward. OFFSET is used to
-;; adjust point after search.
-(defun vip-find-char (arg char forward offset)
- (or (char-or-string-p char) (error ""))
- (let ((arg (if forward arg (- arg)))
- (cmd (if (eq vip-intermediate-command 'vip-repeat)
- (nth 5 vip-d-com)
- (vip-array-to-string (this-command-keys))))
- point)
- (save-excursion
- (save-restriction
- (if (> arg 0)
- (narrow-to-region
- ;; forward search begins here
- (if (eolp) (error "Command `%s': At end of line" cmd) (point))
- ;; forward search ends here
- (progn (end-of-line) (point)))
- (narrow-to-region
- ;; backward search begins from here
- (if (bolp)
- (error "Command `%s': At beginning of line" cmd) (point))
- ;; backward search ends here
- (progn (beginning-of-line) (point))))
- ;; if arg > 0, point is forwarded before search.
- (if (> arg 0) (goto-char (1+ (point-min)))
- (goto-char (point-max)))
- (if (let ((case-fold-search nil))
- (search-forward (char-to-string char) nil 0 arg))
- (setq point (point))
- (error "Command `%s': `%c' not found" cmd char))))
- (goto-char (+ point (if (> arg 0) (if offset -2 -1) (if offset 1 0))))))
-
-(defun vip-find-char-forward (arg)
- "Find char on the line.
-If called interactively read the char to find from the terminal, and if
-called from vip-repeat, the char last used is used. This behaviour is
-controlled by the sign of prefix numeric value."
- (interactive "P")
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if (> val 0)
- ;; this means that the function was called interactively
- (setq vip-f-char (read-char)
- vip-f-forward t
- vip-f-offset nil)
- ;; vip-repeat --- set vip-F-char from command-keys
- (setq vip-F-char (if (stringp (nth 5 vip-d-com))
- (vip-seq-last-elt (nth 5 vip-d-com))
- vip-F-char)
- vip-f-char vip-F-char)
- (setq val (- val)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (vip-find-char val (if (> (vip-p-val arg) 0) vip-f-char vip-F-char) t nil)
- (setq val (- val))
- (if com
- (progn
- (setq vip-F-char vip-f-char) ; set new vip-F-char
- (forward-char)
- (vip-execute-com 'vip-find-char-forward val com)))))
-
-(defun vip-goto-char-forward (arg)
- "Go up to char ARG forward on line."
- (interactive "P")
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if (> val 0)
- ;; this means that the function was called interactively
- (setq vip-f-char (read-char)
- vip-f-forward t
- vip-f-offset t)
- ;; vip-repeat --- set vip-F-char from command-keys
- (setq vip-F-char (if (stringp (nth 5 vip-d-com))
- (vip-seq-last-elt (nth 5 vip-d-com))
- vip-F-char)
- vip-f-char vip-F-char)
- (setq val (- val)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (vip-find-char val (if (> (vip-p-val arg) 0) vip-f-char vip-F-char) t t)
- (setq val (- val))
- (if com
- (progn
- (setq vip-F-char vip-f-char) ; set new vip-F-char
- (forward-char)
- (vip-execute-com 'vip-goto-char-forward val com)))))
-
-(defun vip-find-char-backward (arg)
- "Find char ARG on line backward."
- (interactive "P")
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if (> val 0)
- ;; this means that the function was called interactively
- (setq vip-f-char (read-char)
- vip-f-forward nil
- vip-f-offset nil)
- ;; vip-repeat --- set vip-F-char from command-keys
- (setq vip-F-char (if (stringp (nth 5 vip-d-com))
- (vip-seq-last-elt (nth 5 vip-d-com))
- vip-F-char)
- vip-f-char vip-F-char)
- (setq val (- val)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (vip-find-char
- val (if (> (vip-p-val arg) 0) vip-f-char vip-F-char) nil nil)
- (setq val (- val))
- (if com
- (progn
- (setq vip-F-char vip-f-char) ; set new vip-F-char
- (vip-execute-com 'vip-find-char-backward val com)))))
-
-(defun vip-goto-char-backward (arg)
- "Go up to char ARG backward on line."
- (interactive "P")
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if (> val 0)
- ;; this means that the function was called interactively
- (setq vip-f-char (read-char)
- vip-f-forward nil
- vip-f-offset t)
- ;; vip-repeat --- set vip-F-char from command-keys
- (setq vip-F-char (if (stringp (nth 5 vip-d-com))
- (vip-seq-last-elt (nth 5 vip-d-com))
- vip-F-char)
- vip-f-char vip-F-char)
- (setq val (- val)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (vip-find-char val (if (> (vip-p-val arg) 0) vip-f-char vip-F-char) nil t)
- (setq val (- val))
- (if com
- (progn
- (setq vip-F-char vip-f-char) ; set new vip-F-char
- (vip-execute-com 'vip-goto-char-backward val com)))))
-
-(defun vip-repeat-find (arg)
- "Repeat previous find command."
- (interactive "P")
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (vip-deactivate-mark)
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (vip-find-char val vip-f-char vip-f-forward vip-f-offset)
- (if com
- (progn
- (if vip-f-forward (forward-char))
- (vip-execute-com 'vip-repeat-find val com)))))
-
-(defun vip-repeat-find-opposite (arg)
- "Repeat previous find command in the opposite direction."
- (interactive "P")
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (vip-deactivate-mark)
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (vip-find-char val vip-f-char (not vip-f-forward) vip-f-offset)
- (if com
- (progn
- (if vip-f-forward (forward-char))
- (vip-execute-com 'vip-repeat-find-opposite val com)))))
-
-\f
-;; window scrolling etc.
-
-(defun vip-other-window (arg)
- "Switch to other window."
- (interactive "p")
- (other-window arg)
- (or (not (eq vip-current-state 'emacs-state))
- (string= (buffer-name (current-buffer)) " *Minibuf-1*")
- (vip-change-state-to-vi)))
-
-(defun vip-window-top (arg)
- "Go to home window line."
- (interactive "P")
- (let ((val (vip-p-val arg))
- (com (vip-getCom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (push-mark nil t)
- (move-to-window-line (1- val))
-
- ;; positioning is done twice: before and after command execution
- (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
- (back-to-indentation)
-
- (if com (vip-execute-com 'vip-window-top val com))
-
- (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
- (back-to-indentation)
- ))
-
-(defun vip-window-middle (arg)
- "Go to middle window line."
- (interactive "P")
- (let ((val (vip-p-val arg))
- (com (vip-getCom arg))
- lines)
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (push-mark nil t)
- (if (not (pos-visible-in-window-p (point-max)))
- (move-to-window-line (+ (/ (1- (window-height)) 2) (1- val)))
- (setq lines (count-lines (window-start) (point-max)))
- (move-to-window-line (+ (/ lines 2) (1- val))))
-
- ;; positioning is done twice: before and after command execution
- (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
- (back-to-indentation)
-
- (if com (vip-execute-com 'vip-window-middle val com))
-
- (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
- (back-to-indentation)
- ))
-
-(defun vip-window-bottom (arg)
- "Go to last window line."
- (interactive "P")
- (let ((val (vip-p-val arg))
- (com (vip-getCom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (push-mark nil t)
- (move-to-window-line (- val))
-
- ;; positioning is done twice: before and after command execution
- (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
- (back-to-indentation)
-
- (if com (vip-execute-com 'vip-window-bottom val com))
-
- (if (and (eobp) (bolp) (not (bobp))) (forward-line -1))
- (back-to-indentation)
- ))
-
-(defun vip-line-to-top (arg)
- "Put current line on the home line."
- (interactive "p")
- (recenter (1- arg)))
-
-(defun vip-line-to-middle (arg)
- "Put current line on the middle line."
- (interactive "p")
- (recenter (+ (1- arg) (/ (1- (window-height)) 2))))
-
-(defun vip-line-to-bottom (arg)
- "Put current line on the last line."
- (interactive "p")
- (recenter (- (window-height) (1+ arg))))
-
-\f
-;; paren match
-;; must correct this to only match ( to ) etc. On the other hand
-;; it is good that paren match gets confused, because that way you
-;; catch _all_ imbalances.
-
-(defun vip-paren-match (arg)
- "Go to the matching parenthesis."
- (interactive "P")
- (let ((com (vip-getcom arg)))
- (if (numberp arg)
- (if (or (> arg 99) (< arg 1))
- (error "Prefix must be between 1 and 99")
- (goto-char
- (if (> (point-max) 80000)
- (* (/ (point-max) 100) arg)
- (/ (* (point-max) arg) 100)))
- (back-to-indentation))
- (let (lim)
- (if (and (eolp) (not (bolp))) (forward-char -1))
- (save-excursion
- (end-of-line)
- (setq lim (point)))
- (if (re-search-forward "[][(){}]" lim t)
- (backward-char)
- (error "No matching character on line")))
- (cond ((looking-at "[\(\[{]")
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (forward-sexp 1)
- (if com
- (vip-execute-com 'vip-paren-match nil com)
- (backward-char)))
- ((looking-at "[])}]")
- (forward-char)
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (backward-sexp 1)
- (if com (vip-execute-com 'vip-paren-match nil com)))
- (t (error ""))))))
-
-\f
-;; sentence ,paragraph and heading
-
-(defun vip-forward-sentence (arg)
- "Forward sentence."
- (interactive "P")
- (push-mark nil t)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (forward-sentence val)
- (if com (vip-execute-com 'vip-forward-sentence nil com))))
-
-(defun vip-backward-sentence (arg)
- "Backward sentence."
- (interactive "P")
- (push-mark nil t)
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (backward-sentence val)
- (if com (vip-execute-com 'vip-backward-sentence nil com))))
-
-(defun vip-forward-paragraph (arg)
- "Forward paragraph."
- (interactive "P")
- (push-mark nil t)
- (let ((val (vip-p-val arg))
- (com (vip-getCom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (forward-paragraph val)
- (if com (vip-execute-com 'vip-forward-paragraph nil com))))
-
-(defun vip-backward-paragraph (arg)
- "Backward paragraph."
- (interactive "P")
- (push-mark nil t)
- (let ((val (vip-p-val arg))
- (com (vip-getCom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (backward-paragraph val)
- (if com (vip-execute-com 'vip-backward-paragraph nil com))))
-
-;; should be mode-specific etc.
-
-(defun vip-prev-heading (arg)
- (interactive "P")
- (let ((val (vip-p-val arg))
- (com (vip-getCom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (re-search-backward vip-heading-start nil t val)
- (goto-char (match-beginning 0))
- (if com (vip-execute-com 'vip-prev-heading nil com))))
-
-(defun vip-heading-end (arg)
- (interactive "P")
- (let ((val (vip-p-val arg))
- (com (vip-getCom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (re-search-forward vip-heading-end nil t val)
- (goto-char (match-beginning 0))
- (if com (vip-execute-com 'vip-heading-end nil com))))
-
-(defun vip-next-heading (arg)
- (interactive "P")
- (let ((val (vip-p-val arg))
- (com (vip-getCom arg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (end-of-line)
- (re-search-forward vip-heading-start nil t val)
- (goto-char (match-beginning 0))
- (if com (vip-execute-com 'vip-next-heading nil com))))
-
-\f
-;; scrolling
-
-(setq scroll-step 1)
-
-(defun vip-scroll (arg)
- "Scroll to next screen."
- (interactive "p")
- (if (> arg 0)
- (while (> arg 0)
- (scroll-up)
- (setq arg (1- arg)))
- (while (> 0 arg)
- (scroll-down)
- (setq arg (1+ arg)))))
-
-(defun vip-scroll-back (arg)
- "Scroll to previous screen."
- (interactive "p")
- (vip-scroll (- arg)))
-
-(defun vip-scroll-down (arg)
- "Pull down half screen."
- (interactive "P")
- (condition-case nil
- (if (null arg)
- (scroll-down (/ (window-height) 2))
- (scroll-down arg))
- (error (beep 1)
- (message "Beginning of buffer")
- (goto-char (point-min)))))
-
-(defun vip-scroll-down-one (arg)
- "Scroll up one line."
- (interactive "p")
- (scroll-down arg))
-
-(defun vip-scroll-up (arg)
- "Pull up half screen."
- (interactive "P")
- (condition-case nil
- (if (null arg)
- (scroll-up (/ (window-height) 2))
- (scroll-up arg))
- (error (beep 1)
- (message "End of buffer")
- (goto-char (point-max)))))
-
-(defun vip-scroll-up-one (arg)
- "Scroll down one line."
- (interactive "p")
- (scroll-up arg))
-
-\f
-;; searching
-
-(defun vip-if-string (prompt)
- (let ((s (vip-read-string-with-history
- prompt
- nil ; no initial
- 'vip-search-history
- (car vip-search-history))))
- (if (not (string= s ""))
- (setq vip-s-string s))))
-
-
-(defun vip-toggle-search-style (arg)
- "Toggle the value of vip-case-fold-search/vip-re-search.
-Without prefix argument, will ask which search style to toggle. With prefix
-arg 1,toggles vip-case-fold-search; with arg 2 toggles vip-re-search.
-
-Although this function is bound to \\[vip-toggle-search-style], the most
-convenient way to use it is to bind `//' to the macro
-`1 M-x vip-toggle-search-style' and `///' to
-`2 M-x vip-toggle-search-style'. In this way, hitting `//' quickly will
-toggle case-fold-search and hitting `/' three times with toggle regexp
-search. Macros are more convenient in this case because they don't affect
-the Emacs binding of `/'."
- (interactive "P")
- (let (msg)
- (cond ((or (eq arg 1)
- (and (null arg)
- (y-or-n-p (format "Search style: '%s'. Want '%s'? "
- (if vip-case-fold-search
- "case-insensitive" "case-sensitive")
- (if vip-case-fold-search
- "case-sensitive"
- "case-insensitive")))))
- (setq vip-case-fold-search (null vip-case-fold-search))
- (if vip-case-fold-search
- (setq msg "Search becomes case-insensitive")
- (setq msg "Search becomes case-sensitive")))
- ((or (eq arg 2)
- (and (null arg)
- (y-or-n-p (format "Search style: '%s'. Want '%s'? "
- (if vip-re-search
- "regexp-search" "vanilla-search")
- (if vip-re-search
- "vanilla-search"
- "regexp-search")))))
- (setq vip-re-search (null vip-re-search))
- (if vip-re-search
- (setq msg "Search becomes regexp-style")
- (setq msg "Search becomes vanilla-style")))
- (t
- (setq msg "Search style remains unchanged")))
- (prin1 msg t)))
-
-
-(defun vip-search-forward (arg)
- "Search a string forward.
-ARG is used to find the ARG's occurrence of the string.
-Null string will repeat previous search."
- (interactive "P")
- (let ((val (vip-P-val arg))
- (com (vip-getcom arg))
- (old-str vip-s-string))
- (setq vip-s-forward t)
- (vip-if-string "/")
- ;; this is not used at present, but may be used later
- (if (or (not (equal old-str vip-s-string))
- (not (markerp vip-local-search-start-marker))
- (not (marker-buffer vip-local-search-start-marker)))
- (setq vip-local-search-start-marker (point-marker)))
- (vip-search vip-s-string t val)
- (if com
- (progn
- (vip-move-marker-locally 'vip-com-point (mark t))
- (vip-execute-com 'vip-search-next val com)))))
-
-(defun vip-search-backward (arg)
- "Search a string backward.
-ARG is used to find the ARG's occurrence of the string.
-Null string will repeat previous search."
- (interactive "P")
- (let ((val (vip-P-val arg))
- (com (vip-getcom arg))
- (old-str vip-s-string))
- (setq vip-s-forward nil)
- (vip-if-string "?")
- ;; this is not used at present, but may be used later
- (if (or (not (equal old-str vip-s-string))
- (not (markerp vip-local-search-start-marker))
- (not (marker-buffer vip-local-search-start-marker)))
- (setq vip-local-search-start-marker (point-marker)))
- (vip-search vip-s-string nil val)
- (if com
- (progn
- (vip-move-marker-locally 'vip-com-point (mark t))
- (vip-execute-com 'vip-search-next val com)))))
-
-
-;; Search for COUNT's occurrence of STRING.
-;; Search is forward if FORWARD is non-nil, otherwise backward.
-;; INIT-POINT is the position where search is to start.
-;; Arguments:
-;; (STRING FORW COUNT &optional NO-OFFSET INIT-POINT LIMIT FAIL-IF-NOT-FOUND)
-(defun vip-search (string forward arg
- &optional no-offset init-point fail-if-not-found)
- (if (not (equal string ""))
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg))
- (offset (not no-offset))
- (case-fold-search vip-case-fold-search)
- (start-point (or init-point (point))))
- (vip-deactivate-mark)
- (if forward
- (condition-case nil
- (progn
- (if offset (vip-forward-char-carefully))
- (if vip-re-search
- (progn
- (re-search-forward string nil nil val)
- (re-search-backward string))
- (search-forward string nil nil val)
- (search-backward string))
- ;; don't wait and don't flash in macros
- (or executing-kbd-macro
- (vip-flash-search-pattern))
- (if (not (equal start-point (point)))
- (push-mark start-point t)))
- (search-failed
- (if (and (not fail-if-not-found) vip-search-wrap-around-t)
- (progn
- (message "Search wrapped around end of buffer")
- (goto-char (point-min))
- (vip-search string forward (cons 1 com) t start-point 'fail)
- ;; don't wait in macros
- (or executing-kbd-macro (sit-for 2))
- ;; delete the wrap-around message
- (message "")
- )
- (goto-char start-point)
- (error "`%s': %s not found"
- string
- (if vip-re-search "Pattern" "String"))
- )))
- ;; backward
- (condition-case nil
- (progn
- (if vip-re-search
- (re-search-backward string nil nil val)
- (search-backward string nil nil val))
- ;; don't wait and don't flash in macros
- (or executing-kbd-macro
- (vip-flash-search-pattern))
- (if (not (equal start-point (point)))
- (push-mark start-point t)))
- (search-failed
- (if (and (not fail-if-not-found) vip-search-wrap-around-t)
- (progn
- (message "Search wrapped around beginning of buffer")
- (goto-char (point-max))
- (vip-search string forward (cons 1 com) t start-point 'fail)
- ;; don't wait in macros
- (or executing-kbd-macro (sit-for 2))
- ;; delete the wrap-around message
- (message "")
- )
- (goto-char start-point)
- (error "`%s': %s not found"
- string
- (if vip-re-search "Pattern" "String"))
- )))))))
-
-(defun vip-search-next (arg)
- "Repeat previous search."
- (interactive "P")
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if (null vip-s-string) (error vip-NoPrevSearch))
- (vip-search vip-s-string vip-s-forward arg)
- (if com
- (progn
- (vip-move-marker-locally 'vip-com-point (mark t))
- (vip-execute-com 'vip-search-next val com)))))
-
-(defun vip-search-Next (arg)
- "Repeat previous search in the reverse direction."
- (interactive "P")
- (let ((val (vip-p-val arg))
- (com (vip-getcom arg)))
- (if (null vip-s-string) (error vip-NoPrevSearch))
- (vip-search vip-s-string (not vip-s-forward) arg)
- (if com
- (progn
- (vip-move-marker-locally 'vip-com-point (mark t))
- (vip-execute-com 'vip-search-Next val com)))))
-
-
-;; Search contents of buffer defined by one of Viper's motion commands.
-;; Repeatable via `n' and `N'.
-(defun vip-buffer-search-enable (&optional c)
- (cond (c (setq vip-buffer-search-char c))
- ((null vip-buffer-search-char)
- (setq vip-buffer-search-char ?g)))
- (define-key vip-vi-basic-map
- (char-to-string vip-buffer-search-char) 'vip-command-argument)
- (aset vip-exec-array vip-buffer-search-char 'vip-exec-buffer-search)
- (setq vip-prefix-commands (cons vip-buffer-search-char vip-prefix-commands)))
-
-;; This is a Viper wrapper for isearch-forward.
-(defun vip-isearch-forward (arg)
- "Do incremental search forward."
- (interactive "P")
- ;; emacs bug workaround
- (if (listp arg) (setq arg (car arg)))
- (vip-exec-form-in-emacs (list 'isearch-forward arg)))
-
-;; This is a Viper wrapper for isearch-backward."
-(defun vip-isearch-backward (arg)
- "Do incremental search backward."
- (interactive "P")
- ;; emacs bug workaround
- (if (listp arg) (setq arg (car arg)))
- (vip-exec-form-in-emacs (list 'isearch-backward arg)))
-
-\f
-;; visiting and killing files, buffers
-
-(defun vip-switch-to-buffer ()
- "Switch to buffer in the current window."
- (interactive)
- (let (buffer)
- (setq buffer
- (read-buffer
- (format "Switch to buffer in this window \(%s\): "
- (buffer-name (other-buffer (current-buffer))))))
- (switch-to-buffer buffer)
- ))
-
-(defun vip-switch-to-buffer-other-window ()
- "Switch to buffer in another window."
- (interactive)
- (let (buffer)
- (setq buffer
- (read-buffer
- (format "Switch to buffer in another window \(%s\): "
- (buffer-name (other-buffer (current-buffer))))))
- (switch-to-buffer-other-window buffer)
- ))
-
-(defun vip-kill-buffer ()
- "Kill a buffer."
- (interactive)
- (let (buffer buffer-name)
- (setq buffer-name
- (read-buffer
- (format "Kill buffer \(%s\): "
- (buffer-name (current-buffer)))))
- (setq buffer
- (if (null buffer-name)
- (current-buffer)
- (get-buffer buffer-name)))
- (if (null buffer) (error "`%s': No such buffer" buffer-name))
- (if (or (not (buffer-modified-p buffer))
- (y-or-n-p
- (format
- "Buffer `%s' is modified, are you sure you want to kill it? "
- buffer-name)))
- (kill-buffer buffer)
- (error "Buffer not killed"))))
-
-
-(defvar vip-smart-suffix-list '("" "tex" "c" "cc" "el" "p")
- "*List of suffixes that Viper automatically tries to append to filenames ending with a `.'.
-This is useful when you the current directory contains files with the same
-prefix and many different suffixes. Usually, only one of the suffixes
-represents an editable file. However, file completion will stop at the `.'
-The smart suffix feature lets you hit RET in such a case, and Viper will
-select the appropriate suffix.
-
-Suffixes are tried in the order given and the first suffix for which a
-corresponding file exists is selected. If no file exists for any of the
-suffixes, the user is asked to confirm.
-
-To turn this feature off, set this variable to nil.")
-
-;; Try to add suffix to files ending with a `.'
-;; Useful when the user hits RET on a non-completed file name.
-(defun vip-file-add-suffix ()
- (let ((count 0)
- (len (length vip-smart-suffix-list))
- (file (buffer-string))
- found key cmd suff)
- (goto-char (point-max))
- (if (and vip-smart-suffix-list (string-match "\\.$" file))
- (progn
- (while (and (not found) (< count len))
- (setq suff (nth count vip-smart-suffix-list)
- count (1+ count))
- (if (file-exists-p (format "%s%s" file suff))
- (progn
- (setq found t)
- (insert suff))))
-
- (if found
- ()
- (vip-tmp-insert-at-eob " [Please complete file name]")
- (unwind-protect
- (while (not (memq cmd '(exit-minibuffer vip-exit-minibuffer)))
- (setq cmd
- (key-binding (setq key (read-key-sequence nil))))
- (cond ((eq cmd 'self-insert-command)
- (if vip-xemacs-p
- (insert (events-to-keys key))
- (insert key)))
- ((memq cmd '(exit-minibuffer vip-exit-minibuffer))
- nil)
- (t (command-execute cmd)))
- )))
- ))
- ))
-
-
-;; Advice for use in find-file and read-file-name commands.
-(defadvice exit-minibuffer (before vip-exit-minibuffer-advice activate)
- "Run `vip-minibuffer-exit-hook' just before exiting the minibuffer."
- (run-hooks 'vip-minibuffer-exit-hook))
-
-(defadvice find-file (before vip-add-suffix-advice activate)
- "Use `read-file-name' for reading arguments."
- (interactive (list (read-file-name "Find file: "
- nil default-directory))))
-
-(defadvice find-file-other-window (before vip-add-suffix-advice activate)
- "Use `read-file-name' for reading arguments."
- (interactive (list (read-file-name "Find file in other window: "
- nil default-directory))))
-
-(defadvice find-file-other-frame (before vip-add-suffix-advice activate)
- "Use `read-file-name' for reading arguments."
- (interactive (list (read-file-name "Find file in other frame: "
- nil default-directory))))
-
-(defadvice read-file-name (around vip-suffix-advice activate)
- "Tell `exit-minibuffer' to run `vip-file-add-suffix' as a hook."
- (let ((vip-minibuffer-exit-hook 'vip-file-add-suffix))
- ad-do-it))
-
-
-\f
-;; yank and pop
-
-(defsubst vip-yank (text)
- "Yank TEXT silently. This works correctly with Emacs's yank-pop command."
- (insert text)
- (setq this-command 'yank))
-
-(defun vip-put-back (arg)
- "Put back after point/below line."
- (interactive "P")
- (let ((val (vip-p-val arg))
- (text (if vip-use-register
- (cond ((vip-valid-register vip-use-register '(digit))
- (current-kill (- vip-use-register ?1) 'do-not-rotate))
- ((vip-valid-register vip-use-register)
- (get-register (downcase vip-use-register)))
- (t (error vip-InvalidRegister vip-use-register)))
- (current-kill 0))))
- (if (null text)
- (if vip-use-register
- (let ((reg vip-use-register))
- (setq vip-use-register nil)
- (error vip-EmptyRegister reg))
- (error "")))
- (setq vip-use-register nil)
- (if (vip-end-with-a-newline-p text)
- (progn
- (if (eobp)
- (insert "\n")
- (forward-line 1))
- (beginning-of-line))
- (if (not (eolp)) (vip-forward-char-carefully)))
- (set-marker (vip-mark-marker) (point) (current-buffer))
- (vip-set-destructive-command
- (list 'vip-put-back val nil vip-use-register nil nil))
- (vip-loop val (vip-yank text)))
- ;; Vi puts cursor on the last char when the yanked text doesn't contain a
- ;; newline; it leaves the cursor at the beginning when the text contains
- ;; a newline
- (if (vip-same-line (point) (mark))
- (or (= (point) (mark)) (vip-backward-char-carefully))
- (exchange-point-and-mark)
- (if (bolp)
- (back-to-indentation)))
- (vip-deactivate-mark))
-
-(defun vip-Put-back (arg)
- "Put back at point/above line."
- (interactive "P")
- (let ((val (vip-p-val arg))
- (text (if vip-use-register
- (cond ((vip-valid-register vip-use-register '(digit))
- (current-kill (- vip-use-register ?1) 'do-not-rotate))
- ((vip-valid-register vip-use-register)
- (get-register (downcase vip-use-register)))
- (t (error vip-InvalidRegister vip-use-register)))
- (current-kill 0))))
- (if (null text)
- (if vip-use-register
- (let ((reg vip-use-register))
- (setq vip-use-register nil)
- (error vip-EmptyRegister reg))
- (error "")))
- (setq vip-use-register nil)
- (if (vip-end-with-a-newline-p text) (beginning-of-line))
- (vip-set-destructive-command
- (list 'vip-Put-back val nil vip-use-register nil nil))
- (set-marker (vip-mark-marker) (point) (current-buffer))
- (vip-loop val (vip-yank text)))
- ;; Vi puts cursor on the last char when the yanked text doesn't contain a
- ;; newline; it leaves the cursor at the beginning when the text contains
- ;; a newline
- (if (vip-same-line (point) (mark))
- (or (= (point) (mark)) (vip-backward-char-carefully))
- (exchange-point-and-mark)
- (if (bolp)
- (back-to-indentation)))
- (vip-deactivate-mark))
-
-
-;; Copy region to kill-ring.
-;; If BEG and END do not belong to the same buffer, copy empty region.
-(defun vip-copy-region-as-kill (beg end)
- (condition-case nil
- (copy-region-as-kill beg end)
- (error (copy-region-as-kill beg beg))))
-
-;; Saves last inserted text for possible use by vip-repeat command.
-(defun vip-save-last-insertion (beg end)
- (setq vip-last-insertion (buffer-substring beg end))
- (or (< (length vip-d-com) 5)
- (setcar (nthcdr 4 vip-d-com) vip-last-insertion))
- (or (null vip-command-ring)
- (ring-empty-p vip-command-ring)
- (progn
- (setcar (nthcdr 4 (vip-current-ring-item vip-command-ring))
- vip-last-insertion)
- ;; del most recent elt, if identical to the second most-recent
- (vip-cleanup-ring vip-command-ring)))
- )
-
-(defsubst vip-yank-last-insertion ()
- "Inserts the text saved by the previous vip-save-last-insertion command."
- (condition-case nil
- (insert vip-last-insertion)
- (error nil)))
-
-
-(defun vip-delete-char (arg)
- "Delete character."
- (interactive "P")
- (let ((val (vip-p-val arg)))
- (vip-set-destructive-command (list 'vip-delete-char val nil nil nil nil))
- (if (> val 1)
- (save-excursion
- (let ((here (point)))
- (end-of-line)
- (if (> val (- (point) here))
- (setq val (- (point) here))))))
- (if (and (eq val 0) (not vip-ex-style-motion)) (setq val 1))
- (if (and vip-ex-style-motion (eolp))
- (if (bolp) (error "") (setq val 0))) ; not bol---simply back 1 ch
- (if vip-use-register
- (progn
- (cond ((vip-valid-register vip-use-register '((Letter)))
- (vip-append-to-register
- (downcase vip-use-register) (point) (- (point) val)))
- ((vip-valid-register vip-use-register)
- (copy-to-register
- vip-use-register (point) (- (point) val) nil))
- (t (error vip-InvalidRegister vip-use-register)))
- (setq vip-use-register nil)))
- (if vip-ex-style-motion
- (progn
- (delete-char val t)
- (if (and (eolp) (not (bolp))) (backward-char 1)))
- (if (eolp)
- (delete-backward-char val t)
- (delete-char val t)))))
-
-(defun vip-delete-backward-char (arg)
- "Delete previous character. On reaching beginning of line, stop and beep."
- (interactive "P")
- (let ((val (vip-p-val arg)))
- (vip-set-destructive-command
- (list 'vip-delete-backward-char val nil nil nil nil))
- (if (> val 1)
- (save-excursion
- (let ((here (point)))
- (beginning-of-line)
- (if (> val (- here (point)))
- (setq val (- here (point)))))))
- (if vip-use-register
- (progn
- (cond ((vip-valid-register vip-use-register '(Letter))
- (vip-append-to-register
- (downcase vip-use-register) (point) (+ (point) val)))
- ((vip-valid-register vip-use-register)
- (copy-to-register
- vip-use-register (point) (+ (point) val) nil))
- (t (error vip-InvalidRegister vip-use-register)))
- (setq vip-use-register nil)))
- (if (bolp) (ding)
- (delete-backward-char val t))))
-
-(defun vip-del-backward-char-in-insert ()
- "Delete 1 char backwards while in insert mode."
- (interactive)
- (if (and vip-ex-style-editing-in-insert (bolp))
- (beep 1)
- (delete-backward-char 1 t)))
-
-(defun vip-del-backward-char-in-replace ()
- "Delete one character in replace mode.
-If `vip-delete-backwards-in-replace' is t, then DEL key actually deletes
-characters. If it is nil, then the cursor just moves backwards, similarly
-to Vi. The variable `vip-ex-style-editing-in-insert', if t, doesn't let the
-cursor move past the beginning of line."
- (interactive)
- (cond (vip-delete-backwards-in-replace
- (cond ((not (bolp))
- (delete-backward-char 1 t))
- (vip-ex-style-editing-in-insert
- (beep 1))
- ((bobp)
- (beep 1))
- (t
- (delete-backward-char 1 t))))
- (vip-ex-style-editing-in-insert
- (if (bolp)
- (beep 1)
- (backward-char 1)))
- (t
- (backward-char 1))))
-
-
-\f
-;; join lines.
-
-(defun vip-join-lines (arg)
- "Join this line to next, if ARG is nil. Otherwise, join ARG lines."
- (interactive "*P")
- (let ((val (vip-P-val arg)))
- (vip-set-destructive-command (list 'vip-join-lines val nil nil nil nil))
- (vip-loop (if (null val) 1 (1- val))
- (progn
- (end-of-line)
- (if (not (eobp))
- (progn
- (forward-line 1)
- (delete-region (point) (1- (point)))
- (fixup-whitespace)))))))
-
-\f
-;; Replace state
-
-(defun vip-change (beg end)
- (if (markerp beg) (setq beg (marker-position beg)))
- (if (markerp end) (setq end (marker-position end)))
- ;; beg is sometimes (mark t), which may be nil
- (or beg (setq beg end))
-
- (vip-set-complex-command-for-undo)
- (if vip-use-register
- (progn
- (copy-to-register vip-use-register beg end nil)
- (setq vip-use-register nil)))
- (vip-set-replace-overlay beg end)
- (setq last-command nil) ; separate repl text from prev kills
-
- (if (= (vip-replace-start) (point-max))
- (error "End of buffer"))
-
- (setq vip-last-replace-region
- (buffer-substring (vip-replace-start)
- (vip-replace-end)))
-
- ;; protect against error while inserting "@" and other disasters
- ;; (e.g., read-only buff)
- (condition-case conds
- (if (vip-same-line (vip-replace-start)
- (vip-replace-end))
- (progn
- ;; tabs cause problems in replace, so untabify
- (goto-char (vip-replace-end))
- (insert-before-markers "@") ; put placeholder after the TAB
- (untabify (vip-replace-start) (point))
- ;; del @, don't put on kill ring
- (delete-backward-char 1)
-
- (vip-set-replace-overlay-glyphs
- vip-replace-region-start-delimiter
- vip-replace-region-end-delimiter)
- ;; this move takes care of the last posn in the overlay, which
- ;; has to be shifted because of insert. We can't simply insert
- ;; "$" before-markers because then overlay-start will shift the
- ;; beginning of the overlay in case we are replacing a single
- ;; character. This fixes the bug with `s' and `cl' commands.
- (vip-move-replace-overlay (vip-replace-start) (point))
- (goto-char (vip-replace-start))
- (vip-change-state-to-replace t))
- (kill-region (vip-replace-start)
- (vip-replace-end))
- (vip-restore-cursor-color)
- (vip-change-state-to-insert))
- (error ;; make sure that the overlay doesn't stay.
- ;; go back to the original point
- (goto-char (vip-replace-start))
- (vip-hide-replace-overlay)
- (vip-message-conditions conds))))
-
-
-(defun vip-change-subr (beg end)
- ;; beg is sometimes (mark t), which may be nil
- (or beg (setq beg end))
-
- (if vip-use-register
- (progn
- (copy-to-register vip-use-register beg end nil)
- (setq vip-use-register nil)))
- (kill-region beg end)
- (setq this-command 'vip-change)
- (vip-yank-last-insertion))
-
-(defun vip-toggle-case (arg)
- "Toggle character case."
- (interactive "P")
- (let ((val (vip-p-val arg)) (c))
- (vip-set-destructive-command (list 'vip-toggle-case val nil nil nil nil))
- (while (> val 0)
- (setq c (following-char))
- (delete-char 1 nil)
- (if (eq c (upcase c))
- (insert-char (downcase c) 1)
- (insert-char (upcase c) 1))
- (if (eolp) (backward-char 1))
- (setq val (1- val)))))
-
-\f
-;; query replace
-
-(defun vip-query-replace ()
- "Query replace.
-If a null string is supplied as the string to be replaced,
-the query replace mode will toggle between string replace
-and regexp replace."
- (interactive)
- (let (str)
- (setq str (vip-read-string-with-history
- (if vip-re-query-replace "Query replace regexp: "
- "Query replace: ")
- nil ; no initial
- 'vip-replace1-history
- (car vip-replace1-history) ; default
- ))
- (if (string= str "")
- (progn
- (setq vip-re-query-replace (not vip-re-query-replace))
- (message "Query replace mode changed to %s"
- (if vip-re-query-replace "regexp replace"
- "string replace")))
- (if vip-re-query-replace
- (query-replace-regexp
- str
- (vip-read-string-with-history
- (format "Query replace regexp `%s' with: " str)
- nil ; no initial
- 'vip-replace1-history
- (car vip-replace1-history) ; default
- ))
- (query-replace
- str
- (vip-read-string-with-history
- (format "Query replace `%s' with: " str)
- nil ; no initial
- 'vip-replace1-history
- (car vip-replace1-history) ; default
- ))))))
-
-\f
-;; marking
-
-(defun vip-mark-beginning-of-buffer ()
- "Mark beginning of buffer."
- (interactive)
- (push-mark (point))
- (goto-char (point-min))
- (exchange-point-and-mark)
- (message "Mark set at the beginning of buffer"))
-
-(defun vip-mark-end-of-buffer ()
- "Mark end of buffer."
- (interactive)
- (push-mark (point))
- (goto-char (point-max))
- (exchange-point-and-mark)
- (message "Mark set at the end of buffer"))
-
-(defun vip-mark-point ()
- "Set mark at point of buffer."
- (interactive)
- (let ((char (vip-read-char-exclusive)))
- (cond ((and (<= ?a char) (<= char ?z))
- (point-to-register (1+ (- char ?a))))
- ((= char ?<) (vip-mark-beginning-of-buffer))
- ((= char ?>) (vip-mark-end-of-buffer))
- ((= char ?.) (vip-set-mark-if-necessary))
- ((= char ?,) (vip-cycle-through-mark-ring))
- ((= char ?D) (mark-defun))
- (t (error ""))
- )))
-
-;; Algorithm: If first invocation of this command save mark on ring, goto
-;; mark, M0, and pop the most recent elt from the mark ring into mark,
-;; making it into the new mark, M1.
-;; Push this mark back and set mark to the original point position, p1.
-;; So, if you hit '' or `` then you can return to p1.
-;;
-;; If repeated command, pop top elt from the ring into mark and
-;; jump there. This forgets the position, p1, and puts M1 back into mark.
-;; Then we save the current pos, which is M0, jump to M1 and pop M2 from
-;; the ring into mark. Push M2 back on the ring and set mark to M0.
-;; etc.
-(defun vip-cycle-through-mark-ring ()
- "Visit previous locations on the mark ring.
-One can use `` and '' to temporarily jump 1 step back."
- (let* ((sv-pt (point)))
- ;; if repeated `m,' command, pop the previously saved mark.
- ;; Prev saved mark is actually prev saved point. It is used if the
- ;; user types `` or '' and is discarded
- ;; from the mark ring by the next `m,' command.
- ;; In any case, go to the previous or previously saved mark.
- ;; Then push the current mark (popped off the ring) and set current
- ;; point to be the mark. Current pt as mark is discarded by the next
- ;; m, command.
- (if (eq last-command 'vip-cycle-through-mark-ring)
- ()
- ;; save current mark if the first iteration
- (setq mark-ring (delete (vip-mark-marker) mark-ring))
- (if (mark t)
- (push-mark (mark t) t)) )
- (pop-mark)
- (set-mark-command 1)
- ;; don't duplicate mark on the ring
- (setq mark-ring (delete (vip-mark-marker) mark-ring))
- (push-mark sv-pt t)
- (vip-deactivate-mark)
- (setq this-command 'vip-cycle-through-mark-ring)
- ))
-
-
-(defun vip-goto-mark (arg)
- "Go to mark."
- (interactive "P")
- (let ((char (read-char))
- (com (vip-getcom arg)))
- (vip-goto-mark-subr char com nil)))
-
-(defun vip-goto-mark-and-skip-white (arg)
- "Go to mark and skip to first non-white character on line."
- (interactive "P")
- (let ((char (read-char))
- (com (vip-getCom arg)))
- (vip-goto-mark-subr char com t)))
-
-(defun vip-goto-mark-subr (char com skip-white)
- (if (eobp)
- (if (bobp)
- (error "Empty buffer")
- (backward-char 1)))
- (cond ((vip-valid-register char '(letter))
- (let* ((buff (current-buffer))
- (reg (1+ (- char ?a)))
- (text-marker (get-register reg)))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (if (not (vip-valid-marker text-marker))
- (error (format vip-EmptyTextmarker char)))
- (if (and (vip-same-line (point) vip-last-jump)
- (= (point) vip-last-jump-ignore))
- (push-mark vip-last-jump t)
- (push-mark nil t)) ; no msg
- (vip-register-to-point reg)
- (setq vip-last-jump (point-marker))
- (cond (skip-white
- (back-to-indentation)
- (setq vip-last-jump-ignore (point))))
- (if com
- (if (equal buff (current-buffer))
- (vip-execute-com (if skip-white
- 'vip-goto-mark-and-skip-white
- 'vip-goto-mark)
- nil com)
- (switch-to-buffer buff)
- (goto-char vip-com-point)
- (vip-change-state-to-vi)
- (error "")))))
- ((and (not skip-white) (= char ?`))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (if (and (vip-same-line (point) vip-last-jump)
- (= (point) vip-last-jump-ignore))
- (goto-char vip-last-jump))
- (if (= (point) (mark t)) (pop-mark))
- (exchange-point-and-mark)
- (setq vip-last-jump (point-marker)
- vip-last-jump-ignore 0)
- (if com (vip-execute-com 'vip-goto-mark nil com)))
- ((and skip-white (= char ?'))
- (if com (vip-move-marker-locally 'vip-com-point (point)))
- (if (and (vip-same-line (point) vip-last-jump)
- (= (point) vip-last-jump-ignore))
- (goto-char vip-last-jump))
- (if (= (point) (mark t)) (pop-mark))
- (exchange-point-and-mark)
- (setq vip-last-jump (point))
- (back-to-indentation)
- (setq vip-last-jump-ignore (point))
- (if com (vip-execute-com 'vip-goto-mark-and-skip-white nil com)))
- (t (error vip-InvalidTextmarker char))))
-
-(defun vip-insert-tab ()
- (interactive)
- (insert-tab))
-
-(defun vip-exchange-point-and-mark ()
- (interactive)
- (exchange-point-and-mark)
- (back-to-indentation))
-
-;; Input Mode Indentation
-
-(defun vip-forward-indent ()
- "Indent forward -- `C-t' in Vi."
- (interactive)
- (setq vip-cted t)
- (indent-to (+ (current-column) vip-shift-width)))
-
-(defun vip-backward-indent ()
- "Backtab, C-d in VI"
- (interactive)
- (if vip-cted
- (let ((p (point)) (c (current-column)) bol (indent t))
- (if (vip-looking-back "[0^]")
- (progn
- (if (= ?^ (preceding-char)) (setq vip-preserve-indent t))
- (delete-backward-char 1)
- (setq p (point))
- (setq indent nil)))
- (save-excursion
- (beginning-of-line)
- (setq bol (point)))
- (if (re-search-backward "[^ \t]" bol 1) (forward-char))
- (delete-region (point) p)
- (if indent
- (indent-to (- c vip-shift-width)))
- (if (or (bolp) (vip-looking-back "[^ \t]"))
- (setq vip-cted nil)))))
-
-(defun vip-autoindent ()
- "Auto Indentation, Vi-style."
- (interactive)
- (let ((col (current-indentation)))
- (if (not vip-preserve-indent)
- (setq vip-current-indent col)
- (setq vip-preserve-indent nil))
- ;; don't leave whitespace lines around
- (if (memq last-command
- '(vip-autoindent
- vip-open-line vip-Open-line
- vip-replace-state-exit-cmd))
- (indent-to-left-margin))
- (newline 1)
- (if vip-auto-indent
- (progn
- (setq vip-cted t)
- (indent-to vip-current-indent)))))
-
-
-;; Viewing registers
-
-(defun vip-ket-function (arg)
- "Function called by \], the ket. View registers and call \]\]."
- (interactive "P")
- (let ((reg (read-char)))
- (cond ((vip-valid-register reg '(letter Letter))
- (view-register (downcase reg)))
- ((vip-valid-register reg '(digit))
- (let ((text (current-kill (- reg ?1) 'do-not-rotate)))
- (save-excursion
- (set-buffer (get-buffer-create "*Output*"))
- (delete-region (point-min) (point-max))
- (insert (format "Register %c contains the string:\n" reg))
- (insert text)
- (goto-char (point-min)))
- (display-buffer "*Output*")))
- ((= ?\] reg)
- (vip-next-heading arg))
- (t (error
- vip-InvalidRegister reg)))))
-
-(defun vip-brac-function (arg)
- "Function called by \[, the brac. View textmarkers and call \[\["
- (interactive "P")
- (let ((reg (read-char)))
- (cond ((= ?\[ reg)
- (vip-prev-heading arg))
- ((= ?\] reg)
- (vip-heading-end arg))
- ((vip-valid-register reg '(letter))
- (let* ((val (get-register (1+ (- reg ?a))))
- (buf (if (not val)
- (error
- (format vip-EmptyTextmarker reg))
- (marker-buffer val)))
- (pos (marker-position val))
- line-no text (s pos) (e pos))
- (save-excursion
- (set-buffer (get-buffer-create "*Output*"))
- (delete-region (point-min) (point-max))
- (if (and buf pos)
- (progn
- (save-excursion
- (set-buffer buf)
- (setq line-no (1+ (count-lines (point-min) val)))
- (goto-char pos)
- (beginning-of-line)
- (if (re-search-backward "[^ \t]" nil t)
- (progn
- (beginning-of-line)
- (setq s (point))))
- (goto-char pos)
- (forward-line 1)
- (if (re-search-forward "[^ \t]" nil t)
- (progn
- (end-of-line)
- (setq e (point))))
- (setq text (buffer-substring s e))
- (setq text (format "%s<%c>%s"
- (substring text 0 (- pos s))
- reg (substring text (- pos s)))))
- (insert
- (format
- "Textmarker `%c' is in buffer `%s' at line %d.\n"
- reg (buffer-name buf) line-no))
- (insert (format "Here is some text around %c:\n\n %s"
- reg text)))
- (insert (format vip-EmptyTextmarker reg)))
- (goto-char (point-min)))
- (display-buffer "*Output*")))
- (t (error vip-InvalidTextmarker reg)))))
-
-
-\f
-;; commands in insertion mode
-
-(defun vip-delete-backward-word (arg)
- "Delete previous word."
- (interactive "p")
- (save-excursion
- (push-mark nil t)
- (backward-word arg)
- (delete-region (point) (mark t))
- (pop-mark)))
-
-
-(defun vip-set-expert-level (&optional dont-change-unless)
- "Sets the expert level for a Viper user.
-Can be called interactively to change (temporarily or permanently) the
-current expert level.
-
-The optional argument DONT-CHANGE-UNLESS if not nil, says that
-the level should not be changed, unless its current value is
-meaningless (i.e., not one of 1,2,3,4,5).
-
-User level determines the setting of Viper variables that are most
-sensitive for VI-style look-and-feel."
-
- (interactive)
-
- (if (not (numberp vip-expert-level)) (setq vip-expert-level 0))
-
- (save-window-excursion
- (delete-other-windows)
- ;; if 0 < vip-expert-level < vip-max-expert-level
- ;; & dont-change-unless = t -- use it; else ask
- (vip-ask-level dont-change-unless))
-
- (setq vip-always t
- vip-ex-style-motion t
- vip-ex-style-editing-in-insert t
- vip-want-ctl-h-help nil)
-
- (cond
- ;; a novice or a beginner
- ((eq vip-expert-level 1)
- (global-set-key vip-toggle-key ;; in emacs-state
- (if (vip-window-display-p)
- 'vip-iconify
- 'suspend-emacs))
- (setq vip-no-multiple-ESC t
- vip-re-search t
- vip-vi-style-in-minibuffer t
- vip-search-wrap-around-t t
- vip-want-emacs-keys-in-vi nil
- vip-want-emacs-keys-in-insert nil))
-
- ;; an intermediate to guru
- ((and (> vip-expert-level 1) (< vip-expert-level 5))
- (setq vip-no-multiple-ESC (if (vip-window-display-p) t 'twice)
- vip-want-emacs-keys-in-vi t
- vip-want-emacs-keys-in-insert (> vip-expert-level 2))
-
- (if (eq vip-expert-level 4) ; respect user's ex-style motions
- ; and vip-no-multiple-ESC
- (progn
- (setq-default vip-ex-style-editing-in-insert
- (cdr (assoc 'vip-ex-style-editing-in-insert
- vip-saved-user-settings))
- vip-ex-style-motion
- (cdr (assoc 'vip-ex-style-motion
- vip-saved-user-settings)))
- (setq vip-ex-style-motion
- (cdr (assoc 'vip-ex-style-motion vip-saved-user-settings))
- vip-ex-style-editing-in-insert
- (cdr (assoc 'vip-ex-style-editing-in-insert
- vip-saved-user-settings))
- vip-re-search
- (cdr (assoc 'vip-re-search vip-saved-user-settings))
- vip-no-multiple-ESC
- (cdr (assoc 'vip-no-multiple-ESC
- vip-saved-user-settings))))))
-
- ;; A wizard
- ;; Ideally, if 5 is selected, a buffer should pop up to let the
- ;; user toggle variable values.
- (t (setq-default vip-ex-style-editing-in-insert
- (cdr (assoc 'vip-ex-style-editing-in-insert
- vip-saved-user-settings))
- vip-ex-style-motion
- (cdr (assoc 'vip-ex-style-motion
- vip-saved-user-settings)))
- (setq vip-want-ctl-h-help
- (cdr (assoc 'vip-want-ctl-h-help vip-saved-user-settings))
- vip-always
- (cdr (assoc 'vip-always vip-saved-user-settings))
- vip-no-multiple-ESC
- (cdr (assoc 'vip-no-multiple-ESC vip-saved-user-settings))
- vip-ex-style-motion
- (cdr (assoc 'vip-ex-style-motion vip-saved-user-settings))
- vip-ex-style-editing-in-insert
- (cdr (assoc 'vip-ex-style-editing-in-insert
- vip-saved-user-settings))
- vip-re-search
- (cdr (assoc 'vip-re-search vip-saved-user-settings))
- vip-want-emacs-keys-in-vi
- (cdr (assoc 'vip-want-emacs-keys-in-vi
- vip-saved-user-settings))
- vip-want-emacs-keys-in-insert
- (cdr (assoc 'vip-want-emacs-keys-in-insert
- vip-saved-user-settings)))))
- (vip-set-mode-vars-for vip-current-state)
- (if (or vip-always
- (and (> vip-expert-level 0) (> 5 vip-expert-level)))
- (vip-set-hooks)))
-
-;; Ask user expert level.
-(defun vip-ask-level (dont-change-unless)
- (let ((ask-buffer " *vip-ask-level*")
- level-changed repeated)
- (save-window-excursion
- (switch-to-buffer ask-buffer)
-
- (or (eq this-command 'vip-set-expert-level)
- (and
- (<= vip-expert-level vip-max-expert-level)
- (>= vip-expert-level 1))
- (progn
- (insert "
-
- *** Important Notice for VIP users***
-
- This is VIPER
-
-@joke
-Viper Is a Package for Emacs Rebels,
-a VI Plan for Emacs Rescue,
-and a venomous VI PERil.
-@end joke
-
-Technically speaking, Viper is a new Vi emulator that replaces
-the old VIP package.
-
-Viper emulates Vi much better than VIP. It also significantly
-extends and improves upon Vi in many useful ways.
-
-Although many VIP settings in your ~/.vip are compatible with Viper,
-you may have to change some of them. Please refer to the documentation,
-which can be obtained by executing
-
-:help
-
-when Viper is in Vi state.
-
-If you will be so lucky as to find a bug, report it via the command
-
-:submitReport
-
-Type any key to continue... ")
-
- (read-char)
- (erase-buffer)))
-
- (while (or (> vip-expert-level vip-max-expert-level)
- (< vip-expert-level 1)
- (null dont-change-unless))
- (erase-buffer)
- (if repeated
- (progn
- (message "Invalid user level")
- (beep 1))
- (setq repeated t))
- (setq dont-change-unless t
- level-changed t)
- (insert "
-Please specify your level of familiarity with the venomous VI PERil
-(and the VI Plan for Emacs Rescue).
-You can change it at any time by typing `M-x vip-set-expert-level RET'
-
- 1 -- BEGINNER: Almost all Emacs features are suppressed.
- Feels almost like straight Vi. File name completion and
- command history in the minibuffer are thrown in as a bonus.
- To use Emacs productively, you must reach level 3 or higher.
- 2 -- MASTER: C-c now has its standard Emacs meaning in Vi command state,
- so most Emacs commands can be used when Viper is in Vi state.
- Good progress---you are well on the way to level 3!
- 3 -- GRAND MASTER: Like 3, but most Emacs commands are available also
- in Viper's insert state.
- 4 -- GURU: Like 3, but user settings are respected for vip-no-multiple-ESC,
- vip-re-search, vip-ex-style-motion, & vip-ex-style-editing-in-insert
- variables. Adjust these settings to your taste.
- 5 -- WIZARD: Like 4, but user settings are also respected for vip-always,
- vip-want-ctl-h-help, vip-want-emacs-keys-in-vi, and
- vip-want-emacs-keys-in-insert. Adjust these to your taste.
-
-Please, specify your level now: ")
-
- (setq vip-expert-level (- (vip-read-char-exclusive) ?0))
- ) ; end while
-
- ;; tell the user if level was changed
- (and level-changed
- (progn
- (insert
- (format "\n\n\n\n\n\t\tYou have selected user level %d"
- vip-expert-level))
- (if (y-or-n-p "Do you wish to make this change permanent? ")
- ;; save the setting for vip-expert-level
- (vip-save-setting
- 'vip-expert-level
- (format "Saving user level %d ..." vip-expert-level)
- vip-custom-file-name))
- ))
- (bury-buffer) ; remove ask-buffer from screen
- (message "")
- )))
-
-
-(defun viper-version ()
- (interactive)
- (message "Viper version is %s" viper-version))
-
-(defalias 'vip-version 'viper-version)
-
-(defun vip-nil ()
- (interactive)
- (beep 1))
-
-
-;; Returns t, if the string before point matches the regexp STR.
-(defsubst vip-looking-back (str)
- (and (save-excursion (re-search-backward str nil t))
- (= (point) (match-end 0))))
-
-
-
-;; if ENFORCE-BUFFER is not nil, error if CHAR is a marker in another buffer
-(defun vip-register-to-point (char &optional enforce-buffer)
- "Like jump-to-register, but switches to another buffer in another window."
- (interactive "cViper register to point: ")
- (let ((val (get-register char)))
- (cond
- ((and (fboundp 'frame-configuration-p)
- (frame-configuration-p val))
- (set-frame-configuration val))
- ((window-configuration-p val)
- (set-window-configuration val))
- ((vip-valid-marker val)
- (if (and enforce-buffer
- (not (equal (current-buffer) (marker-buffer val))))
- (error (concat vip-EmptyTextmarker " in this buffer")
- (1- (+ char ?a))))
- (pop-to-buffer (marker-buffer val))
- (goto-char val))
- ((and (consp val) (eq (car val) 'file))
- (find-file (cdr val)))
- (t
- (error vip-EmptyTextmarker (1- (+ char ?a)))))))
-
-
-(defun vip-save-kill-buffer ()
- "Save then kill current buffer. "
- (interactive)
- (if (< vip-expert-level 2)
- (save-buffers-kill-emacs)
- (save-buffer)
- (kill-buffer (current-buffer))))
-
-
-\f
-;;; Bug Report
-
-(defun vip-submit-report ()
- "Submit bug report on Viper."
- (interactive)
- (let ((reporter-prompt-for-summary-p t)
- (vip-device-type (vip-device-type))
- color-display-p frame-parameters
- minibuffer-emacs-face minibuffer-vi-face minibuffer-insert-face
- varlist salutation window-config)
-
- ;; If mode info is needed, add variable to `let' and then set it below,
- ;; like we did with color-display-p.
- (setq color-display-p (if (vip-window-display-p)
- (vip-color-display-p)
- 'non-x)
- minibuffer-vi-face (if (vip-window-display-p)
- (vip-get-face vip-minibuffer-vi-face)
- 'non-x)
- minibuffer-insert-face (if (vip-window-display-p)
- (vip-get-face vip-minibuffer-insert-face)
- 'non-x)
- minibuffer-emacs-face (if (vip-window-display-p)
- (vip-get-face vip-minibuffer-emacs-face)
- 'non-x)
- frame-parameters (if (fboundp 'frame-parameters)
- (frame-parameters (selected-frame))))
-
- (setq varlist (list 'vip-vi-minibuffer-minor-mode
- 'vip-insert-minibuffer-minor-mode
- 'vip-vi-intercept-minor-mode
- 'vip-vi-local-user-minor-mode
- 'vip-vi-kbd-minor-mode
- 'vip-vi-global-user-minor-mode
- 'vip-vi-state-modifier-minor-mode
- 'vip-vi-diehard-minor-mode
- 'vip-vi-basic-minor-mode
- 'vip-replace-minor-mode
- 'vip-insert-intercept-minor-mode
- 'vip-insert-local-user-minor-mode
- 'vip-insert-kbd-minor-mode
- 'vip-insert-global-user-minor-mode
- 'vip-insert-state-modifier-minor-mode
- 'vip-insert-diehard-minor-mode
- 'vip-insert-basic-minor-mode
- 'vip-emacs-intercept-minor-mode
- 'vip-emacs-local-user-minor-mode
- 'vip-emacs-kbd-minor-mode
- 'vip-emacs-global-user-minor-mode
- 'vip-emacs-state-modifier-minor-mode
- 'vip-automatic-iso-accents
- 'vip-want-emacs-keys-in-insert
- 'vip-want-emacs-keys-in-vi
- 'vip-keep-point-on-undo
- 'vip-no-multiple-ESC
- 'vip-ESC-key
- 'vip-want-ctl-h-help
- 'vip-ex-style-editing-in-insert
- 'vip-delete-backwards-in-replace
- 'vip-vi-style-in-minibuffer
- 'vip-vi-state-hook
- 'vip-insert-state-hook
- 'vip-replace-state-hook
- 'vip-emacs-state-hook
- 'ex-cycle-other-window
- 'ex-cycle-through-non-files
- 'vip-expert-level
- 'major-mode
- 'vip-device-type
- 'color-display-p
- 'frame-parameters
- 'minibuffer-vi-face
- 'minibuffer-insert-face
- 'minibuffer-emacs-face
- ))
- (setq salutation "
-Congratulations! You may have unearthed a bug in Viper!
-Please mail a concise, accurate summary of the problem to the address above.
-
--------------------------------------------------------------------")
- (setq window-config (current-window-configuration))
- (with-output-to-temp-buffer " *vip-info*"
- (switch-to-buffer " *vip-info*")
- (delete-other-windows)
- (princ "
-PLEASE FOLLOW THESE PROCEDURES
-------------------------------
-
-Before reporting a bug, please verify that it is related to Viper, and is
-not cause by other packages you are using.
-
-Don't report compilation warnings, unless you are certain that there is a
-problem. These warnings are normal and unavoidable.
-
-Please note that users should not modify variables and keymaps other than
-those advertised in the manual. Such `customization' is likely to crash
-Viper, as it would any other improperly customized Emacs package.
-
-If you are reporting an error message received while executing one of the
-Viper commands, type:
-
- M-x set-variable <Return> debug-on-error <Return> t <Return>
-
-Then reproduce the error. The above command will cause Emacs to produce a
-back trace of the execution that leads to the error. Please include this
-trace in your bug report.
-
-If you believe that one of Viper's commands goes into an infinite loop
-\(e.g., Emacs freezes\), type:
-
- M-x set-variable <Return> debug-on-quit <Return> t <Return>
-
-Then reproduce the problem. Wait for a few seconds, then type C-g to abort
-the current command. Include the resulting back trace in the bug report.
-
-Mail anyway (y or n)? ")
- (if (y-or-n-p "Mail anyway? ")
- ()
- (set-window-configuration window-config)
- (error "Bug report aborted")))
-
- (require 'reporter)
- (set-window-configuration window-config)
-
- (reporter-submit-bug-report "kifer@cs.sunysb.edu"
- (vip-version)
- varlist
- nil 'delete-other-windows
- salutation)
- ))
-
-
-
-
-;; Smoothes out the difference between Emacs' unread-command-events
-;; and XEmacs unread-command-event. Arg is a character, an event, a list of
-;; events or a sequence of keys.
-;;
-;; Due to the way unread-command-events in Emacs (not XEmacs), a non-event
-;; symbol in unread-command-events list may cause Emacs to turn this symbol
-;; into an event. Below, we delete nil from event lists, since nil is the most
-;; common symbol that might appear in this wrong context.
-(defun vip-set-unread-command-events (arg)
- (if vip-emacs-p
- (setq
- unread-command-events
- (let ((new-events
- (cond ((eventp arg) (list arg))
- ((listp arg) arg)
- ((sequencep arg)
- (listify-key-sequence arg))
- (t (error
- "vip-set-unread-command-events: Invalid argument, %S"
- arg)))))
- (if (not (eventp nil))
- (setq new-events (delq nil new-events)))
- (append new-events unread-command-events)))
- ;; XEmacs
- (setq
- unread-command-events
- (append
- (cond ((numberp arg) (list (character-to-event arg)))
- ((eventp arg) (list arg))
- ((stringp arg) (mapcar 'character-to-event arg))
- ((vectorp arg) (append arg nil)) ; turn into list
- ((listp arg) (vip-eventify-list-xemacs arg))
- (t (error
- "vip-set-unread-command-events: Invalid argument, %S" arg)))
- unread-command-events))))
-
-;; list is assumed to be a list of events of characters
-(defun vip-eventify-list-xemacs (lis)
- (mapcar
- (function (lambda (elt)
- (cond ((numberp elt) (character-to-event elt))
- ((eventp elt) elt)
- (t (error
- "vip-eventify-list-xemacs: can't convert to event, %S"
- elt)))))
- lis))
-
-
-\f
-;;; Bring in the rest of the files
-(require 'viper-mous)
-(require 'viper-macs)
-(require 'viper-ex)
-
-
-\f
-;; The following is provided for compatibility with older VIP's
-
-(defalias 'vip-change-mode-to-vi 'vip-change-state-to-vi)
-(defalias 'vip-change-mode-to-insert 'vip-change-state-to-insert)
-(defalias 'vip-change-mode-to-emacs 'vip-change-state-to-emacs)
-
-
-\f
-;;; Load .vip and set up hooks
-
-;; This hook designed to enable Vi-style editing in comint-based modes."
-(defun vip-comint-mode-hook ()
- (setq require-final-newline nil)
- (setq vip-ex-style-editing-in-insert nil
- vip-ex-style-motion nil)
- (vip-add-local-keys 'vi-state
- '(("\C-m" . comint-send-input) ; return
- ("\C-d" . comint-delchar-or-maybe-eof))) ; \C-d
- (vip-add-local-keys 'insert-state
- '(("\C-m" . comint-send-input) ; return
- ("\C-d" . comint-delchar-or-maybe-eof))) ; \C-d
- )
-
-
-;; This sets major mode hooks to make them come up in vi-state.
-(defun vip-set-hooks ()
-
- ;; It is of course a misnomer to call viper-mode a `major mode'.
- ;; However, this has the effect that if the user didn't specify the
- ;; default mode, new buffers that fall back on the default will come up
- ;; in Fundamental Mode and Vi state.
- (setq default-major-mode 'viper-mode)
-
- ;; The following major modes should come up in vi-state
- (defadvice fundamental-mode (after vip-fundamental-mode-ad activate)
- "Run `vip-change-state-to-vi' on entry."
- (vip-change-state-to-vi))
-
- (defvar help-mode-hook nil)
- (add-hook 'help-mode-hook 'viper-mode)
-
- (defvar emacs-lisp-mode-hook nil)
- (add-hook 'emacs-lisp-mode-hook 'viper-mode)
-
- (defvar html-mode-hook nil)
- (add-hook 'html-mode-hook 'viper-mode)
-
- (defvar lisp-mode-hook nil)
- (add-hook 'lisp-mode-hook 'viper-mode)
-
- (defvar bibtex-mode-hook nil)
- (add-hook 'bibtex-mode-hook 'viper-mode)
-
- (defvar cc-mode-hook nil)
- (add-hook 'cc-mode-hook 'viper-mode)
-
- (defvar c-mode-hook nil)
- (add-hook 'c-mode-hook 'viper-mode)
-
- (defvar c++-mode-hook nil)
- (add-hook 'c++-mode-hook 'viper-mode)
-
- (defvar lisp-interaction-mode-hook nil)
- (add-hook 'lisp-interaction-mode-hook 'viper-mode)
-
- (defvar text-mode-hook nil)
- (add-hook 'text-mode-hook 'viper-mode)
-
- (add-hook 'completion-list-mode-hook 'viper-mode)
- (add-hook 'compilation-mode-hook 'viper-mode)
-
- (defvar emerge-startup-hook nil)
- (add-hook 'emerge-startup-hook 'vip-change-state-to-emacs)
- ;; Run vip-change-state-to-vi after quitting emerge.
- (vip-eval-after-load
- "emerge"
- '(defadvice emerge-quit (after vip-emerge-advice activate)
- "Run `vip-change-state-to-vi' after quitting emerge."
- (vip-change-state-to-vi)))
- ;; In case Emerge was loaded before Viper.
- (defadvice emerge-quit (after vip-emerge-advice activate)
- "Run `vip-change-state-to-vi' after quitting emerge."
- (vip-change-state-to-vi))
-
- (vip-eval-after-load
- "asm-mode"
- '(defadvice asm-mode (after vip-asm-mode-ad activate)
- "Run `vip-change-state-to-vi' on entry."
- (vip-change-state-to-vi)))
-
- ;; passwd.el sets up its own buffer, which turns up in Vi mode,
- ;; thus overriding the local map. We don't need Vi mode here.
- (vip-eval-after-load
- "passwd"
- '(defadvice read-passwd-1 (before vip-passwd-ad activate)
- "Switch to emacs state while reading password."
- (vip-change-state-to-emacs)))
-
- ;; Emacs shell, ange-ftp, and comint-based modes
- (defvar comint-mode-hook nil)
- (add-hook 'comint-mode-hook 'vip-change-state-to-insert)
- (add-hook 'comint-mode-hook 'vip-comint-mode-hook)
-
- ;; Shell scripts
- (defvar sh-mode-hook nil)
- (add-hook 'sh-mode-hook 'viper-mode)
-
- ;; Dired
- ;; This is only necessary when the user uses vip-modify-major-mode
- (add-hook 'dired-mode-hook 'vip-change-state-to-emacs)
-
- (if vip-emacs-p
- (progn
- (defvar view-mode-hook nil
- "View hook. Run after view mode.")
- (add-hook 'view-mode-hook 'vip-change-state-to-emacs))
- (defadvice view-minor-mode (after vip-view-ad activate)
- "Switch to Emacs state in View mode."
- (vip-change-state-to-emacs))
- (defvar view-hook nil
- "View hook. Run after view mode.")
- (add-hook 'view-hook 'vip-change-state-to-emacs))
-
- ;; For VM users.
- ;; Put summary and other VM buffers in Emacs state.
- (defvar vm-mode-hooks nil
- "This hook is run after vm is started.")
- (defvar vm-summary-mode-hooks nil
- "This hook is run after vm switches to summary mode.")
- (add-hook 'vm-mode-hooks 'vip-change-state-to-emacs)
- (add-hook 'vm-summary-mode-hooks 'vip-change-state-to-emacs)
-
- ;; For RMAIL users.
- ;; Put buf in Emacs state after edit.
- (vip-eval-after-load
- "rmailedit"
- '(defadvice rmail-cease-edit (after vip-rmail-advice activate)
- "Switch to emacs state when done editing message."
- (vip-change-state-to-emacs)))
- ;; In case RMAIL was loaded before Viper.
- (defadvice rmail-cease-edit (after vip-rmail-advice activate)
- "Switch to emacs state when done editing message."
- (vip-change-state-to-emacs))
- ) ; vip-set-hooks
-
-;; Set some useful macros
-;; These must be before we load .vip, so the user can unrecord them.
-
-;; repeat the 2nd previous command without rotating the command history
-(vip-record-kbd-macro
- (vector vip-repeat-from-history-key '\1) 'vi-state
- [(meta x) v i p - r e p e a t - f r o m - h i s t o r y return] 't)
-;; repeat the 3d previous command without rotating the command history
-(vip-record-kbd-macro
- (vector vip-repeat-from-history-key '\2) 'vi-state
- [(meta x) v i p - r e p e a t - f r o m - h i s t o r y return] 't)
-
-;; toggle case sensitivity in search
-(vip-record-kbd-macro
- "//" 'vi-state
- [1 (meta x) v i p - t o g g l e - s e a r c h - s t y l e return] 't)
-;; toggle regexp/vanilla search
-(vip-record-kbd-macro
- "///" 'vi-state
- [2 (meta x) v i p - t o g g l e - s e a r c h - s t y l e return] 't)
-
-
-;; ~/.vip is loaded if it exists
-(if (and (file-exists-p vip-custom-file-name)
- (not noninteractive))
- (load vip-custom-file-name))
-
-;; VIP compatibility: merge whatever the user has in vip-mode-map into
-;; Viper's basic map.
-(vip-add-keymap vip-mode-map vip-vi-global-user-map)
-
-\f
-;; Applying Viper customization -- runs after (load .vip)
-
-;; Save user settings or Viper defaults for vars controlled by vip-expert-level
-(setq vip-saved-user-settings
- (list (cons 'vip-want-ctl-h-help vip-want-ctl-h-help)
- (cons 'vip-always vip-always)
- (cons 'vip-no-multiple-ESC vip-no-multiple-ESC)
- (cons 'vip-ex-style-motion vip-ex-style-motion)
- (cons 'vip-ex-style-editing-in-insert
- vip-ex-style-editing-in-insert)
- (cons 'vip-want-emacs-keys-in-vi vip-want-emacs-keys-in-vi)
- (cons 'vip-want-emacs-keys-in-insert vip-want-emacs-keys-in-insert)
- (cons 'vip-re-search vip-re-search)))
-
-
-(vip-set-minibuffer-style)
-(vip-set-minibuffer-faces)
-(vip-set-search-face)
-(if vip-buffer-search-char
- (vip-buffer-search-enable))
-(vip-update-alphanumeric-class)
-
-;;; Familiarize Viper with some minor modes that have their own keymaps
-(vip-harness-minor-mode "compile")
-(vip-harness-minor-mode "outline")
-(vip-harness-minor-mode "allout")
-(vip-harness-minor-mode "xref")
-(vip-harness-minor-mode "lmenu")
-(vip-harness-minor-mode "vc")
-(vip-harness-minor-mode "ltx-math") ; LaTeX-math-mode in AUC-TeX
-(vip-harness-minor-mode "latex") ; which is in one of these two files
-(vip-harness-minor-mode "cyrillic")
-(vip-harness-minor-mode "russian")
-(vip-harness-minor-mode "view-less")
-
-
-;; Intercept maps could go in viper-keym.el
-;; We keep them here in case someone redefines them in ~/.vip
-
-(define-key vip-vi-intercept-map vip-ESC-key 'vip-intercept-ESC-key)
-(define-key vip-insert-intercept-map vip-ESC-key 'vip-intercept-ESC-key)
-
-;; This is taken care of by vip-insert-global-user-map.
-;;(define-key vip-replace-map vip-ESC-key 'vip-intercept-ESC-key)
-
-(define-key vip-insert-intercept-map vip-toggle-key 'vip-alternate-ESC)
-;; The default vip-toggle-key is \C-z; for the novice, it suspends or
-;; iconifies Emacs
-(define-key vip-vi-intercept-map vip-toggle-key
- '(lambda () (interactive)
- (if (and (< vip-expert-level 2) (equal vip-toggle-key "\C-z"))
- (if (vip-window-display-p) (vip-iconify) (suspend-emacs))
- (vip-change-state-to-emacs))))
-
-(define-key vip-emacs-intercept-map vip-toggle-key 'vip-change-state-to-vi)
-
-
-(if (or vip-always
- (and (< vip-expert-level 5) (> vip-expert-level 0)))
- (vip-set-hooks))
-
-;; Let all minor modes take effect after loading
-;; this may not be enough, so we also set default minor-mode-alist.
-;; Without setting the default, new buffers that come up in emacs mode have
-;; minor-mode-map-alist = nil, unless we call vip-change-state-*
-(if (eq vip-current-state 'emacs-state)
- (progn
- (vip-change-state-to-emacs)
- (setq-default minor-mode-map-alist minor-mode-map-alist)
- ))
-
-
-(run-hooks 'vip-load-hook) ; the last chance to change something
-
-(provide 'viper)
-(provide 'vip19)
-(provide 'vip)
-
-;;; viper.el ends here
+;;; viper.el --- A full-featured Vi emulator for GNU Emacs and XEmacs,
+;; a VI Plan for Emacs Rescue,
+;; and a venomous VI PERil.
+;; Viper Is also a Package for Emacs Rebels.
+;;
+;; Keywords: emulations
+;; Author: Michael Kifer <kifer@cs.sunysb.edu>
+
+;; Copyright (C) 1994, 95, 96, 97, 98, 99, 2000, 01 Free Software Foundation, Inc.
+
+(defconst viper-version "3.11 of July 18, 2001"
+ "The current version of Viper")
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Commentary:
+
+;; Viper is a full-featured Vi emulator for Emacs and XEmacs. It emulates and
+;; improves upon the standard features of Vi and, at the same time, allows
+;; full access to all Emacs facilities. Viper supports multiple undo,
+;; file name completion, command, file, and search history and it extends
+;; Vi in many other ways. Viper is highly customizable through the various
+;; hooks, user variables, and keymaps. It is implemented as a collection
+;; of minor modes and it is designed to provide full access to all Emacs
+;; major and minor modes.
+;;
+;;; History:
+;;
+;; Viper is a new name for a package formerly known as VIP-19,
+;; which was a successor of VIP version 3.5 by Masahiko Sato
+;; <ms@sail.stanford.edu> and VIP version 4.2 by Aamod Sane
+;; <sane@cs.uiuc.edu>. Some ideas from vip 4.4.2 by Aamod Sane
+;; were also shamelessly plagiarized.
+;;
+;; Viper maintains some degree of compatibility with these older
+;; packages. See the documentation for customization.
+;;
+;; The main difference between Viper and these older packages are:
+;;
+;; 1. Viper emulates Vi at several levels, from almost complete conformity
+;; to a rather loose Vi-compliance.
+;;
+;; 2. Viper provides full access to all major and minor modes of Emacs
+;; without the need to type extra keys.
+;; The older versions of VIP (and other Vi emulators) do not work with
+;; some major and minor modes.
+;;
+;; 3. Viper supports vi-style undo.
+;;
+;; 4. Viper fully emulates (and improves upon) vi's replacement mode.
+;;
+;; 5. Viper has a better interface to ex, including command, variable, and
+;; file name completion.
+;;
+;; 6. Viper uses native Emacs history and completion features; it doesn't
+;; rely on other packages (such as gmhist.el and completer.el) to provide
+;; these features.
+;;
+;; 7. Viper supports Vi-style editing in the minibuffer, by allowing the
+;; user to switch from Insert state to Vi state to Replace state, etc.
+;;
+;; 8. Viper keeps history of recently inserted pieces of text and recently
+;; executed Vi-style destructive commands, such as `i', `d', etc.
+;; These pieces of text can be inserted in later insertion commands;
+;; the previous destructive commands can be re-executed.
+;;
+;; 9. Viper has Vi-style keyboard macros, which enhances the similar
+;; facility in the original Vi.
+;; First, one can execute any Emacs command while defining a
+;; macro, not just the Vi commands. Second, macros are defined in a
+;; WYSYWYG mode, using an interface to Emacs' WYSIWYG style of defining
+;; macros. Third, in Viper, one can define macros that are specific to
+;; a given buffer, a given major mode, or macros defined for all buffers.
+;; The same macro name can have several different definitions:
+;; one global, several definitions for various major modes, and
+;; definitions for specific buffers.
+;; Buffer-specific definitions override mode-specific
+;; definitions, which, in turn, override global definitions.
+;;
+;;
+;;; Installation:
+;; -------------
+;;
+;; (require 'viper)
+;;
+
+;;; Acknowledgements:
+;; -----------------
+;; Bug reports and ideas contributed by many users have helped
+;; improve Viper and the various versions of VIP.
+;; See the on-line manual for a complete list of contributors.
+;;
+;;
+;;; Notes:
+;;
+;; 1. Major modes.
+;; In most cases, Viper handles major modes correctly, i.e., they come up
+;; in the right state (either vi-state or emacs-state). For instance, text
+;; files come up in vi-state, while, say, Dired appears in emacs-state by
+;; default.
+;; However, some modes do not appear in the right mode in the beginning,
+;; usually because they neglect to follow Emacs conventions (e.g., they don't
+;; use kill-all-local-variables when they start). Some major modes
+;; may fail to come up in emacs-state if they call hooks, such as
+;; text-hook, for no good reason.
+;;
+;; As an immediate solution, you can hit C-z to bring about the right mode.
+;; An interim solution is to add an appropriate hook to the mode like this:
+;;
+;; (add-hook 'your-favorite-mode 'viper-mode)
+;; or
+;; (add-hook 'your-favorite-mode 'viper-change-state-to-emacs)
+;;
+;; whichever applies. The right thing to do, however, is to complain to the
+;; author of the respective package. (Sometimes they also neglect to equip
+;; their modes with hooks, which is one more reason for complaining.)
+;;
+;; 2. Keymap handling
+;; Each Viper state (insert, vi, replace) is implemented as a collection of
+;; several minor modes, each with its own keymap.
+;;
+;; Viper's Vi state consists of seven minor modes:
+;;
+;; viper-vi-intercept-minor-mode
+;; viper-vi-local-user-minor-mode
+;; viper-vi-global-user-minor-mode
+;; viper-vi-kbd-minor-mode
+;; viper-vi-state-modifier-minor-mode
+;; viper-vi-diehard-minor-mode
+;; viper-vi-basic-minor-mode
+;;
+;; Bindings done to the keymap of the first mode overshadow those done to
+;; the second, which, in turn, overshadows those done to the third, etc.
+;;
+;; The last viper-vi-basic-minor-mode contains most of the usual Vi bindings
+;; in its edit mode. This mode provides access to all Emacs facilities.
+;; Novice users, however, may want to set their viper-expert-level to 1
+;; in their .viper file. This will enable viper-vi-diehard-minor-mode. This
+;; minor mode's bindings make Viper simulate the usual Vi very closely.
+;; For instance, C-c will not have its standard Emacs binding
+;; and so many of the goodies of Emacs are not available.
+;;
+;; A skilled user should set viper-expert-level to at least 3. This will
+;; enable `C-c' and many Emacs facilities will become available.
+;; In this case, viper-vi-diehard-minor-mode is inactive.
+;;
+;; Viper gurus should have at least
+;; (setq viper-expert-level 4)
+;; in their ~/.viper files. This will unsuppress all Emacs keys that are not
+;; essential for VI-style editing.
+;; Pick-and-choose users may want to put
+;; (setq viper-expert-level 5)
+;; in ~/.viper. Viper will then leave it up to the user to set the variables
+;; viper-want-* See viper-set-expert-level for details.
+;;
+;; The very first minor mode, viper-vi-intercept-minor-mode, is of no
+;; concern for the user. It is needed to bind Viper's vital keys, such as
+;; ESC and C-z.
+;;
+;; The second mode, viper-vi-local-user-minor-mode, usually has an
+;; empty keymap. However, the user can set bindings in this keymap, which
+;; will overshadow the corresponding bindings in the other two minor
+;; modes. This is useful, for example, for setting up ZZ in gnus,
+;; rmail, mh-e, etc., to send message instead of saving it in a file.
+;; Likewise, in Dired mode, you may want to bind ZN and ZP to commands
+;; that would visit the next or the previous file in the Dired buffer.
+;; Setting local keys is tricky, so don't do it directly. Instead, use
+;; viper-add-local-keys function (see its doc).
+;;
+;; The third minor mode, viper-vi-global-user-minor-mode, is also intended
+;; for the users but, unlike viper-vi-local-user-minor-mode, its key
+;; bindings are seen in all Viper buffers. This mode keys can be done
+;; with define-key command.
+;;
+;; The fourth minor mode, viper-vi-kbd-minor-mode, is used by keyboard
+;; macros. Users are NOT supposed to modify this keymap directly.
+;;
+;; The fifth mode, viper-vi-state-modifier-minor-mode, can be used to set
+;; key bindings that are visible in some major modes but not in others.
+;;
+;; Users are allowed to modify keymaps that belong to
+;; viper-vi-local-user-minor-mode, viper-vi-global-user-minor-mode,
+;; and viper-vi-state-modifier-minor-mode only.
+;;
+;; Viper's Insert state also has seven minor modes:
+;;
+;; viper-insert-intercept-minor-mode
+;; viper-insert-local-user-minor-mode
+;; viper-insert-global-user-minor-mode
+;; viper-insert-kbd-minor-mode
+;; viper-insert-state-modifier-minor-mode
+;; viper-insert-diehard-minor-mode
+;; viper-insert-basic-minor-mode
+;;
+;; As with VI's editing modes, the first mode,
+;; viper-insert-intercept-minor-mode is used to bind vital keys that are not
+;; to be changed by the user.
+;;
+;; The next mode, viper-insert-local-user-minor-mode, is used to customize
+;; bindings in the insert state of Viper. The third mode,
+;; viper-insert-global-user-minor-mode is like
+;; viper-insert-local-user-minor-mode, except that its bindings are seen in
+;; all Viper buffers. As with viper-vi-local-user-minor-mode, its bindings
+;; should be done via the function viper-add-local-keys. Bindings for
+;; viper-insert-global-user-minor-mode can be set with the define-key command.
+;;
+;; The next minor mode, viper-insert-kbd-minor-mode,
+;; is used for keyboard VI-style macros defined with :map!.
+;;
+;; The fifth minor mode, viper-insert-state-modifier-minor-mode, is like
+;; viper-vi-state-modifier-minor-mode, except that it is used in the Insert
+;; state; it can be used to modify keys in a mode-specific fashion.
+;;
+;; The minor mode viper-insert-diehard-minor-mode is in effect when
+;; the user wants a high degree of Vi compatibility (a bad idea, really!).
+;; The last minor mode, viper-insert-basic-minor-mode, is always in effect
+;; when Viper is in insert state. It binds a small number of keys needed for
+;; Viper's operation.
+;;
+;; Finally, Viper provides minor modes for overriding bindings set by Emacs
+;; modes when Viper is in Emacs state:
+;;
+;; viper-emacs-local-user-minor-mode
+;; viper-emacs-global-user-minor-mode
+;; viper-emacs-kbd-minor-mode
+;; viper-emacs-state-modifier-minor-mode
+;;
+;; These minor modes are in effect when Viper is in Emacs state. The keymap
+;; associated with viper-emacs-global-user-minor-mode,
+;; viper-emacs-global-user-map, overrides the global and local keymaps as
+;; well as the minor mode keymaps set by other modes. The keymap of
+;; viper-emacs-local-user-minor-mode, viper-emacs-local-user-map, overrides
+;; everything, but it is used on a per buffer basis.
+;; The keymap associated with viper-emacs-state-modifier-minor-mode
+;; overrides keys on a per-major-mode basis. The mode
+;; viper-emacs-kbd-minor-mode is used to define Vi-style macros in Emacs
+;; state.
+;;
+;; 3. There is also one minor mode that is used when Viper is in its
+;; replace-state (used for commands like cw, C, etc.). This mode is
+;; called
+;;
+;; viper-replace-minor-mode
+;;
+;; and its keymap is viper-replace-map. Replace minor mode is always
+;; used in conjunction with the minor modes for insert-state, and its
+;; keymap overshadows the keymaps for insert minor modes.
+;;
+;; 4. Defining buffer-local bindings in Vi and Insert modes.
+;; As mentioned before, sometimes, it is convenient to have
+;; buffer-specific of mode-specific key bindings in Vi and insert modes.
+;; Viper provides a special function, viper-add-local-keys, to do precisely
+;; this. For instance, is you need to add couple of mode-specific bindings
+;; to Insert mode, you can put
+;;
+;; (viper-add-local-keys 'insert-state '((key1 . func1) (key2 .func2)))
+;;
+;; somewhere in a hook of this major mode. If you put something like this
+;; in your own elisp function, this will define bindings specific to the
+;; buffer that was current at the time of the call to viper-add-local-keys.
+;; The only thing to make sure here is that the major mode of this buffer
+;; is written according to Emacs conventions, which includes a call to
+;; (kill-all-local-variables). See viper-add-local-keys for more details.
+;;
+;;
+;; TO DO (volunteers?):
+;;
+;; 1. Some of the code that is inherited from VIP-3.5 is rather
+;; convoluted. Instead of viper-command-argument, keymaps should bind the
+;; actual commands. E.g., "dw" should be bound to a generic command
+;; viper-delete that will delete things based on the value of
+;; last-command-char. This would greatly simplify the logic and the code.
+;;
+;; 2. Somebody should venture to write a customization package a la
+;; options.el that would allow the user to change values of variables
+;; that meet certain specs (e.g., match a regexp) and whose doc string
+;; starts with a '*'. Then, the user should be offered to save
+;; variables that were changed. This will make user's customization job
+;; much easier.
+;;
+
+;;; Code:
+
+(require 'advice)
+(require 'cl)
+(require 'ring)
+
+;; compiler pacifier
+(defvar mark-even-if-inactive)
+(defvar quail-mode)
+(defvar viper-expert-level)
+(defvar viper-mode-string)
+(defvar viper-major-mode-modifier-list)
+
+;; loading happens only in non-interactive compilation
+;; in order to spare non-viperized emacs from being viperized
+(if noninteractive
+ (eval-when-compile
+ (let ((load-path (cons (expand-file-name ".") load-path)))
+ (or (featurep 'viper-init)
+ (load "viper-init.el" nil nil 'nosuffix))
+ (or (featurep 'viper-cmd)
+ (load "viper-cmd.el" nil nil 'nosuffix))
+ )))
+;; end pacifier
+
+(require 'viper-init)
+
+;; better be defined before Viper custom group.
+(defvar viper-custom-file-name (convert-standard-filename "~/.viper")
+ "Viper customisation file.
+If set by the user, this must be done _before_ Viper is loaded in `~/.emacs'.")
+
+(defgroup viper nil
+ "Vi emulation within Emacs.
+NOTE: Viper customization should be saved in `viper-custom-file-name', which
+defaults to `~/.viper'."
+ :prefix "viper-"
+ :group 'emulations)
+
+(require 'viper-cmd)
+
+(defgroup viper-misc nil
+ "Miscellaneous Viper customization."
+ :prefix "viper-"
+ :group 'viper)
+
+
+(defcustom viper-always t
+ "Non-nil means, arrange for vi-state to be a default when appropriate.
+This is different from `viper-mode' variable in that `viper-mode' determines
+whether to use Viper in the first place, while `viper-always', if nil, lets
+user decide when to invoke Viper in a major mode."
+ :type 'boolean
+ :tag "Always Invoke Viper"
+ :group 'viper-misc)
+
+;; Non-viper variables that need to be saved in case the user decides to
+;; de-viperize emacs.
+(defvar viper-saved-non-viper-variables nil)
+;; Contains user settings for vars affected by viper-set-expert-level function.
+;; Not a user option.
+(defvar viper-saved-user-settings nil)
+
+(defcustom viper-mode (cond (noninteractive nil)
+ (t 'ask))
+ "To Viperize or not to Viperize.
+If t, viperize emacs. If nil -- don't. If `ask', ask the user.
+This variable is used primatily when Viper is being loaded.
+
+Must be set in `~/.emacs' before Viper is loaded.
+DO NOT set this variable interactively, unless you are using the customization
+widget."
+ :type '(choice (const nil) (const t) (const ask))
+ :tag "Set Viper Mode on Loading"
+ :group 'viper-misc)
+
+(defcustom viper-vi-state-mode-list
+ '(fundamental-mode
+ makefile-mode
+ help-mode
+
+ awk-mode
+ m4-mode
+ xrdb-mode
+ winmgr-mode
+ autoconf-mode
+ cvs-edit-mode
+
+ html-mode html-helper-mode
+ emacs-lisp-mode lisp-mode lisp-interaction-mode
+
+ jde-mode java-mode
+ cc-mode c-mode c++-mode objc-mode
+ fortran-mode f90-mode
+ basic-mode
+ bat-mode
+ asm-mode
+ prolog-mode
+ flora-mode
+ sql-mode
+
+ text-mode indented-text-mode
+ tex-mode latex-mode bibtex-mode
+ ps-mode
+
+ completion-list-mode
+ diff-mode
+ idl-mode
+
+ perl-mode
+ cperl-mode
+ javascript-mode
+ tcl-mode
+ python-mode
+
+ sh-mode ksh-mode csh-mode
+
+ gnus-article-mode
+ mh-show-mode
+ )
+ "Major modes that require Vi command state."
+ :type '(repeat symbol)
+ :group 'viper-misc)
+
+(defcustom viper-emacs-state-mode-list
+ '(custom-mode
+
+ dired-mode
+ efs-mode
+ tar-mode
+
+ mh-folder-mode
+ gnus-group-mode
+ gnus-summary-mode
+
+ Info-mode
+ Buffer-menu-mode
+ compilation-mode
+
+ view-mode
+ vm-mode
+ vm-summary-mode)
+ "*A list of major modes that should come up in Emacs state.
+Normally, Viper would bring buffers up in Emacs state, unless the corresponding
+major mode has been placed on `viper-vi-state-mode-list' or
+`viper-insert-state-mode-list'. So, don't place a new mode on this list,
+unless it is coming up in a wrong Viper state."
+ :type '(repeat symbol)
+ :group 'viper-misc)
+
+(defcustom viper-insert-state-mode-list
+ '(internal-ange-ftp-mode
+ comint-mode
+ inferior-emacs-lisp-mode
+ eshell-mode
+ shell-mode)
+ "*A list of major modes that should come up in Vi Insert state."
+ :type '(repeat symbol)
+ :group 'viper-misc)
+
+
+;; used to set viper-major-mode-modifier-list in defcustom
+(defun viper-apply-major-mode-modifiers (&optional symbol value)
+ (if symbol
+ (set symbol value))
+ (mapcar (lambda (triple)
+ (viper-modify-major-mode
+ (nth 0 triple) (nth 1 triple) (eval (nth 2 triple))))
+ viper-major-mode-modifier-list))
+
+;; We change standard bindings in some major mode, making them slightly
+;; different than in "normal" vi/insert/emacs states
+(defcustom viper-major-mode-modifier-list
+ '((help-mode emacs-state viper-slash-and-colon-map)
+ (comint-mode insert-state viper-comint-mode-modifier-map)
+ (comint-mode vi-state viper-comint-mode-modifier-map)
+ (shell-mode insert-state viper-comint-mode-modifier-map)
+ (inferior-emacs-lisp-mode insert-state viper-comint-mode-modifier-map)
+ (shell-mode vi-state viper-comint-mode-modifier-map)
+ (ange-ftp-shell-mode insert-state viper-comint-mode-modifier-map)
+ (ange-ftp-shell-mode vi-state viper-comint-mode-modifier-map)
+ (internal-ange-ftp-mode insert-state viper-comint-mode-modifier-map)
+ (internal-ange-ftp-mode vi-state viper-comint-mode-modifier-map)
+ (dired-mode emacs-state viper-dired-modifier-map)
+ (tar-mode emacs-state viper-slash-and-colon-map)
+ (mh-folder-mode emacs-state viper-slash-and-colon-map)
+ (gnus-group-mode emacs-state viper-slash-and-colon-map)
+ (gnus-summary-mode emacs-state viper-slash-and-colon-map)
+ (Info-mode emacs-state viper-slash-and-colon-map)
+ (Buffer-menu-mode emacs-state viper-slash-and-colon-map)
+ )
+ "List specifying how to modify the various major modes to enable some Viperisms.
+The list has the structure: ((mode viper-state keymap) (mode viper-state
+keymap) ...). If `mode' is on the list, the `kemap' will be made active (on
+the minor-mode-map-alist) in the specified viper state.
+If you change this list, have to restart emacs for the change to take effect.
+However, if you did the change through the customization widget, then emacs
+needs to be restarted only if you deleted a triple mode-state-keymap from the
+list. No need to restart emacs in case of insertion or modification of an
+existing triple."
+ :type '(repeat
+ (list symbol
+ (choice (const emacs-state)
+ (const vi-state)
+ (const insert-state))
+ symbol))
+ :set 'viper-apply-major-mode-modifiers
+ :group 'viper-misc)
+
+
+
+\f
+
+;;;###autoload
+(defun toggle-viper-mode ()
+ "Toggle Viper on/off.
+If Viper is enabled, turn it off. Otherwise, turn it on."
+ (interactive)
+ (if (eq viper-mode t)
+ (viper-go-away)
+ (setq viper-mode nil)
+ (viper-mode)))
+
+;;;###autoload
+(defun viper-mode ()
+ "Turn on Viper emulation of Vi."
+ (interactive)
+ (if (not noninteractive)
+ (progn
+ ;; if the user requested viper-mode explicitly
+ (if viper-mode
+ ()
+ (setq viper-mode t)
+ (load-library "viper"))
+
+ (if viper-first-time ; Important check. Prevents mix-up of startup
+ (progn ; and expert-level msgs when viper-mode recurses
+ (setq viper-first-time nil)
+ (setq viper-vi-state-cursor-color
+ (viper-get-cursor-color))
+ (if (not viper-inhibit-startup-message)
+ (save-window-excursion
+ (setq viper-inhibit-startup-message t)
+ (delete-other-windows)
+ (switch-to-buffer "Viper Startup Message")
+ (erase-buffer)
+ (insert
+ (substitute-command-keys
+ "Viper Is a Package for Emacs Rebels,
+a VI Plan for Emacs Rescue, and a venomous VI PERil.
+
+Incidentally, Viper emulates Vi under GNU Emacs 20 and XEmacs 20.
+It supports all of what is good in Vi and Ex, while extending
+and improving upon much of it.
+
+ 1. Viper supports Vi at several levels. Level 1 is the closest to Vi,
+ level 5 provides the most flexibility to depart from many Vi conventions.
+
+ You will be asked to specify your user level in a following screen.
+
+ If you select user level 1 then the keys ^X, ^C, ^Z, and ^G will behave
+ as in VI, to smooth transition to Viper for the beginners. However, to
+ use Emacs productively, you are advised to reach user level 3 or higher.
+
+ At user level 2 or higher, ^X and ^C have Emacs, not Vi, bindings;
+ ^Z toggles Vi/Emacs states; ^G is Emacs' keyboard-quit (like ^C in Vi).
+
+ 2. Vi exit functions (e.g., :wq, ZZ) work on INDIVIDUAL files -- they
+ do not cause Emacs to quit, except at user level 1 (for a novice).
+ 3. ^X^C EXITS EMACS.
+ 4. Viper supports multiple undo: `u' will undo. Typing `.' will repeat
+ undo. Another `u' changes direction.
+
+ 6. Emacs Meta key is `C-\\' (in all modes) or `\\ ESC' (in Vi command mode).
+ On a window system, the best way is to use the Meta-key on your keyboard.
+ 7. Try \\[keyboard-quit] and \\[abort-recursive-edit] repeatedly,if
+ something funny happens. This would abort the current editing command.
+
+For more information on Viper:
+
+ a. Type `:help' in Vi command mode
+ b. Print Viper manual, found in ./etc/viper.dvi
+ c. Print the Quick Reference, found in ./etc/viperCard.dvi
+
+To submit a bug report or to contact the author, type :submitReport in Vi
+command mode. To shoo Viper away and return to pure Emacs (horror!), type:
+
+ M-x viper-go-away
+
+This startup message appears whenever you load Viper, unless you type `y' now."
+ ))
+ (goto-char (point-min))
+ (if (y-or-n-p "Inhibit Viper startup message? ")
+ (viper-save-setting
+ 'viper-inhibit-startup-message
+ "Viper startup message inhibited"
+ viper-custom-file-name t))
+ ;;(kill-buffer (current-buffer))
+ (message
+ "The last message is in buffer `Viper Startup Message'")
+ (sit-for 4)
+ ))
+ (viper-set-expert-level 'dont-change-unless)))
+
+ (if viper-xemacs-p
+ (make-variable-buffer-local 'bar-cursor))
+ (if (eq major-mode 'viper-mode)
+ (setq major-mode 'fundamental-mode))
+
+ (or (memq major-mode viper-emacs-state-mode-list) ; don't switch to Vi
+ (memq major-mode viper-insert-state-mode-list) ; don't switch
+ (viper-change-state-to-vi)))))
+
+
+;; Apply a little heuristic to invoke vi state on major-modes
+;; that are not listed in viper-vi-state-mode-list
+(defun this-major-mode-requires-vi-state (mode)
+ (cond ((memq mode viper-vi-state-mode-list) t)
+ ((memq mode viper-emacs-state-mode-list) nil)
+ ((memq mode viper-insert-state-mode-list) nil)
+ (t (and (eq (key-binding "a") 'self-insert-command)
+ (eq (key-binding " ") 'self-insert-command)))))
+
+\f
+;; This hook designed to enable Vi-style editing in comint-based modes."
+(defun viper-comint-mode-hook ()
+ (setq require-final-newline nil
+ viper-ex-style-editing nil
+ viper-ex-style-motion nil)
+ (viper-change-state-to-insert))
+
+
+;; remove viper hooks from SYMBOL
+(defun viper-remove-hooks (symbol)
+ (cond ((not (boundp symbol)) nil)
+ ((not (listp (eval symbol))) nil)
+ ((string-match "-hook" (symbol-name symbol))
+ (remove-hook symbol 'viper-mode)
+ (remove-hook symbol 'viper-change-state-to-emacs)
+ (remove-hook symbol 'viper-change-state-to-insert)
+ (remove-hook symbol 'viper-change-state-to-vi)
+ )))
+
+;; Remove local value in all existing buffers
+;; This doesn't delocalize vars (which would have been desirable)
+(defun viper-delocalize-var (symbol)
+ (mapcar (lambda (buf) (save-excursion
+ (set-buffer buf)
+ (kill-local-variable symbol)))
+ (buffer-list)))
+
+
+(defun viper-go-away ()
+ "De-Viperize Emacs.
+This function tries to do as good a job as possible. However, it may undo some
+user customization, unrelated to Viper. For instance, if the user advised
+`read-file-name', `describe-key', and some others, then this advice will be
+undone.
+It also doesn't undo some Viper settings. For instance, `minor-mode-map-alist'
+remains buffer-local."
+ (interactive)
+
+ ;; restore non-viper vars
+ (setq-default
+ next-line-add-newlines
+ (viper-standard-value
+ 'next-line-add-newlines viper-saved-non-viper-variables)
+ require-final-newline
+ (viper-standard-value
+ 'require-final-newline viper-saved-non-viper-variables)
+ scroll-step
+ (viper-standard-value 'scroll-step viper-saved-non-viper-variables)
+ mode-line-buffer-identification
+ (viper-standard-value
+ 'mode-line-buffer-identification viper-saved-non-viper-variables)
+ global-mode-string
+ (delq 'viper-mode-string global-mode-string))
+
+ (if viper-emacs-p
+ (setq-default
+ mark-even-if-inactive
+ (viper-standard-value
+ 'mark-even-if-inactive viper-saved-non-viper-variables)))
+
+ ;; Ideally, we would like to be able to de-localize local variables
+ (viper-delocalize-var 'minor-mode-map-alist)
+ (viper-delocalize-var 'require-final-newline)
+ (if viper-xemacs-p (viper-delocalize-var 'bar-cursor))
+
+
+ ;; deactivate all advices done by Viper.
+ (ad-deactivate-regexp "viper-")
+
+ (setq viper-mode nil)
+
+ (viper-delocalize-var 'viper-vi-minibuffer-minor-mode)
+ (viper-delocalize-var 'viper-insert-minibuffer-minor-mode)
+ (viper-delocalize-var 'viper-vi-intercept-minor-mode)
+ (viper-delocalize-var 'viper-insert-intercept-minor-mode)
+
+ (viper-delocalize-var 'viper-vi-local-user-minor-mode)
+ (viper-delocalize-var 'viper-vi-kbd-minor-mode)
+ (viper-delocalize-var 'viper-vi-global-user-minor-mode)
+ (viper-delocalize-var 'viper-vi-state-modifier-minor-mode)
+ (viper-delocalize-var 'viper-vi-diehard-minor-mode)
+ (viper-delocalize-var 'viper-vi-basic-minor-mode)
+
+ (viper-delocalize-var 'viper-replace-minor-mode)
+
+ (viper-delocalize-var 'viper-insert-local-user-minor-mode)
+ (viper-delocalize-var 'viper-insert-kbd-minor-mode)
+ (viper-delocalize-var 'viper-insert-global-user-minor-mode)
+ (viper-delocalize-var 'viper-insert-state-modifier-minor-mode)
+ (viper-delocalize-var 'viper-insert-diehard-minor-mode)
+ (viper-delocalize-var 'viper-insert-basic-minor-mode)
+
+ (viper-delocalize-var 'viper-emacs-intercept-minor-mode)
+ (viper-delocalize-var 'viper-emacs-local-user-minor-mode)
+ (viper-delocalize-var 'viper-emacs-kbd-minor-mode)
+ (viper-delocalize-var 'viper-emacs-global-user-minor-mode)
+ (viper-delocalize-var 'viper-emacs-state-modifier-minor-mode)
+
+ (viper-delocalize-var 'viper-current-state)
+ (viper-delocalize-var 'viper-mode-string)
+
+ (setq-default viper-vi-minibuffer-minor-mode nil
+ viper-insert-minibuffer-minor-mode nil
+ viper-vi-intercept-minor-mode nil
+ viper-insert-intercept-minor-mode nil
+
+ viper-vi-local-user-minor-mode nil
+ viper-vi-kbd-minor-mode nil
+ viper-vi-global-user-minor-mode nil
+ viper-vi-state-modifier-minor-mode nil
+ viper-vi-diehard-minor-mode nil
+ viper-vi-basic-minor-mode nil
+
+ viper-replace-minor-mode nil
+
+ viper-insert-local-user-minor-mode nil
+ viper-insert-kbd-minor-mode nil
+ viper-insert-global-user-minor-mode nil
+ viper-insert-state-modifier-minor-mode nil
+ viper-insert-diehard-minor-mode nil
+ viper-insert-basic-minor-mode nil
+
+ viper-emacs-intercept-minor-mode nil
+ viper-emacs-local-user-minor-mode nil
+ viper-emacs-kbd-minor-mode nil
+ viper-emacs-global-user-minor-mode nil
+ viper-emacs-state-modifier-minor-mode nil
+
+ viper-current-state 'emacs-state
+ viper-mode-string viper-emacs-state-id
+ )
+
+ ;; remove all hooks set by viper
+ (mapatoms 'viper-remove-hooks)
+ (remove-hook 'comint-mode-hook 'viper-comint-mode-hook)
+ (remove-hook 'minibuffer-setup-hook 'viper-minibuffer-setup-sentinel)
+ (remove-hook 'change-major-mode-hook 'viper-major-mode-change-sentinel)
+
+ ;; unbind Viper mouse bindings
+ (viper-unbind-mouse-search-key)
+ (viper-unbind-mouse-insert-key)
+ ;; In emacs, we have to advice handle-switch-frame
+ ;; This advice is undone earlier, when all advices matchine "viper-" are
+ ;; deactivated.
+ (if viper-xemacs-p
+ (remove-hook 'mouse-leave-frame-hook 'viper-remember-current-frame))
+ ) ; end viper-go-away
+
+
+;; list of buffers that just changed their major mode
+;; used in a hack that triggers vi command mode whenever needed
+(defvar viper-new-major-mode-buffer-list nil)
+
+;; set appropriate Viper state in buffers that changed major mode
+(defun set-viper-state-in-major-mode ()
+ (mapcar
+ (lambda (buf)
+ (if (viper-buffer-live-p buf)
+ (with-current-buffer buf
+ (cond ((and (this-major-mode-requires-vi-state major-mode)
+ (eq viper-current-state 'emacs-state))
+ (viper-mode))
+ ((memq major-mode viper-emacs-state-mode-list)
+ ;; not checking (eq viper-current-state 'emacs-state)
+ ;; because viper-current-state could have gotten it by
+ ;; default. We need viper-change-state-to-emacs here to have
+ ;; the keymaps take effect.
+ (viper-change-state-to-emacs))
+ ((and (memq major-mode viper-insert-state-mode-list)
+ (not (eq viper-current-state 'insert-state)))
+ (viper-change-state-to-insert))
+ )) ; with-current-buffer
+ )) ; function
+ viper-new-major-mode-buffer-list)
+ ;; clear the list of bufs that changed major mode
+ (setq viper-new-major-mode-buffer-list nil)
+ ;; change the global value of hook
+ (remove-hook 'viper-post-command-hooks 'set-viper-state-in-major-mode))
+
+;; sets up post-command-hook to turn viper-mode, if the current mode is
+;; fundamental
+(defun viper-major-mode-change-sentinel ()
+ (save-match-data
+ (or (string-match "\*Minibuf-" (buffer-name))
+ (setq viper-new-major-mode-buffer-list
+ (cons (current-buffer) viper-new-major-mode-buffer-list))))
+ ;; change the global value of hook
+ (add-hook 'viper-post-command-hooks 'set-viper-state-in-major-mode t))
+
+
+
+;; This sets major mode hooks to make them come up in vi-state.
+(defun viper-set-hooks ()
+ ;; It is of course a misnomer to call viper-mode a `major mode'.
+ ;; However, this has the effect that if the user didn't specify the
+ ;; default mode, new buffers that fall back on the default will come up
+ ;; in Fundamental Mode and Vi state.
+ ;; When viper-mode is executed in such a case, it will set the major mode
+ ;; back to fundamental-mode.
+ (if (eq default-major-mode 'fundamental-mode)
+ (setq default-major-mode 'viper-mode))
+
+ (add-hook 'change-major-mode-hook 'viper-major-mode-change-sentinel)
+ (add-hook 'find-file-hooks 'set-viper-state-in-major-mode)
+
+ ;; keep this because many modes we don't know about use this hook
+ (defvar text-mode-hook)
+ (add-hook 'text-mode-hook 'viper-mode)
+
+ (defvar emerge-startup-hook)
+ (add-hook 'emerge-startup-hook 'viper-change-state-to-emacs)
+
+ ;; Tell vc-diff to put *vc* in Vi mode
+ (if (featurep 'vc)
+ (defadvice vc-diff (after viper-vc-ad activate)
+ "Force Vi state in VC diff buffer."
+ (viper-change-state-to-vi))
+ (eval-after-load
+ "vc"
+ '(defadvice vc-diff (after viper-vc-ad activate)
+ "Force Vi state in VC diff buffer."
+ (viper-change-state-to-vi))))
+
+ (eval-after-load
+ "emerge"
+ '(defadvice emerge-quit (after viper-emerge-advice activate)
+ "Run `viper-change-state-to-vi' after quitting emerge."
+ (viper-change-state-to-vi)))
+ ;; In case Emerge was loaded before Viper.
+ (defadvice emerge-quit (after viper-emerge-advice activate)
+ "Run `viper-change-state-to-vi' after quitting emerge."
+ (viper-change-state-to-vi))
+
+ ;; passwd.el sets up its own buffer, which turns up in Vi mode,
+ ;; thus overriding the local map. We don't need Vi mode here.
+ (eval-after-load
+ "passwd"
+ '(defadvice read-passwd-1 (before viper-passwd-ad activate)
+ "Switch to emacs state while reading password."
+ (viper-change-state-to-emacs)))
+
+ ;; Emacs shell, ange-ftp, and comint-based modes
+ (add-hook 'comint-mode-hook 'viper-comint-mode-hook) ; comint
+
+ (viper-set-emacs-state-searchstyle-macros nil 'dired-mode) ; dired
+ (viper-set-emacs-state-searchstyle-macros nil 'tar-mode) ; tar
+ (viper-set-emacs-state-searchstyle-macros nil 'mh-folder-mode) ; mhe
+ (viper-set-emacs-state-searchstyle-macros nil 'gnus-group-mode) ; gnus
+ (viper-set-emacs-state-searchstyle-macros nil 'gnus-summary-mode)
+ (viper-set-emacs-state-searchstyle-macros nil 'Info-mode) ; info
+ (viper-set-emacs-state-searchstyle-macros nil 'Buffer-menu-mode) ;buffer-menu
+
+ ;; Modify major modes according to viper-major-mode-modifier-list
+ (viper-apply-major-mode-modifiers)
+
+ ;; For RMAIL users.
+ ;; Put buf in Emacs state after edit.
+ (eval-after-load
+ "rmailedit"
+ '(defadvice rmail-cease-edit (after viper-rmail-advice activate)
+ "Switch to emacs state when done editing message."
+ (viper-change-state-to-emacs)))
+ ;; In case RMAIL was loaded before Viper.
+ (defadvice rmail-cease-edit (after viper-rmail-advice activate)
+ "Switch to emacs state when done editing message."
+ (viper-change-state-to-emacs))
+
+ ;; ISO accents
+ ;; Need to do it after loading iso-acc, or else this loading will wipe out
+ ;; the advice.
+ (eval-after-load
+ "iso-acc"
+ (defadvice iso-accents-mode (around viper-iso-accents-advice activate)
+ "Set viper-automatic-iso-accents to iso-accents-mode."
+ (let ((arg (ad-get-arg 0)))
+ ad-do-it
+ (setq viper-automatic-iso-accents
+ (if (eq viper-current-state 'vi-state)
+ (if arg
+ ;; if iso-accents-mode was called with positive arg, turn
+ ;; accents on
+ (> (prefix-numeric-value arg) 0)
+ ;; else: toggle viper-automatic-iso-accents
+ (not viper-automatic-iso-accents))
+ ;; other states: accept what iso-accents-mode has done
+ iso-accents-mode))
+ ;; turn off ISO accents in vi-state
+ (if (eq viper-current-state 'vi-state)
+ (viper-set-iso-accents-mode nil))
+ (if (memq viper-current-state '(vi-state insert-state replace-state))
+ (message "Viper ISO accents mode: %s"
+ (if viper-automatic-iso-accents "on" "off")))
+ )))
+
+ ;; International input methods
+ (if viper-emacs-p
+ (eval-after-load "mule-cmds"
+ (progn
+ (defadvice inactivate-input-method (after viper-mule-advice activate)
+ "Set viper-special-input-method to disable intl. input methods."
+ (viper-inactivate-input-method-action))
+ (defadvice activate-input-method (after viper-mule-advice activate)
+ "Set viper-special-input-method to enable intl. input methods."
+ (viper-activate-input-method-action))
+ ))
+ ;; XEmacs Although these hooks exist in Emacs, they don't seem to be always
+ ;; called on input-method activation/deactivation, so we the above advise
+ ;; functions instead.
+ (eval-after-load "mule-cmds"
+ (progn
+ (add-hook 'input-method-activate-hook
+ 'viper-activate-input-method-action t)
+ (add-hook 'input-method-inactivate-hook
+ 'viper-inactivate-input-method-action t)))
+ )
+ (eval-after-load "mule-cmds"
+ (defadvice toggle-input-method (around viper-mule-advice activate)
+ "Adjust input-method toggling in vi-state."
+ (if (and viper-special-input-method (eq viper-current-state 'vi-state))
+ (viper-inactivate-input-method)
+ ad-do-it)))
+
+ ) ; viper-set-hooks
+
+
+;; these are primarily advices and Vi-ish variable settings
+(defun viper-non-hook-settings ()
+
+ ;; This var is not local in Emacs, so we make it local. It must be local
+ ;; because although the stack of minor modes can be the same for all buffers,
+ ;; the associated *keymaps* can be different. In Viper,
+ ;; viper-vi-local-user-map, viper-insert-local-user-map, and others can have
+ ;; different keymaps for different buffers. Also, the keymaps associated
+ ;; with viper-vi/insert-state-modifier-minor-mode can be different.
+ (make-variable-buffer-local 'minor-mode-map-alist)
+
+ ;; Viper changes the default mode-line-buffer-identification
+ (setq-default mode-line-buffer-identification '(" %b"))
+
+ ;; setup emacs-supported vi-style feel
+ (setq next-line-add-newlines nil
+ require-final-newline t)
+
+ (make-variable-buffer-local 'require-final-newline)
+
+ ;; don't bark when mark is inactive
+ (if viper-emacs-p
+ (setq mark-even-if-inactive t))
+
+ (setq scroll-step 1)
+
+ ;; Variable displaying the current Viper state in the mode line.
+ (viper-deflocalvar viper-mode-string viper-emacs-state-id)
+ (or (memq 'viper-mode-string global-mode-string)
+ (setq global-mode-string
+ (append '("" viper-mode-string) (cdr global-mode-string))))
+
+ (defadvice describe-key (before viper-read-keyseq-ad protect activate)
+ "Force to read key via `viper-read-key-sequence'."
+ (interactive (list (viper-events-to-keys
+ (viper-read-key-sequence "Describe key: ")))))
+
+ (defadvice describe-key-briefly
+ (before viper-read-keyseq-ad protect activate)
+ "Force to read key via `viper-read-key-sequence'."
+ (interactive (list (viper-events-to-keys
+ (viper-read-key-sequence "Describe key briefly: ")))))
+
+
+ (defadvice find-file (before viper-add-suffix-advice activate)
+ "Use `read-file-name' for reading arguments."
+ (interactive (cons (read-file-name "Find file: " nil default-directory)
+ ;; XEmacs: if Mule & prefix arg, ask for coding system
+ (cond ((and viper-xemacs-p (featurep 'mule))
+ (list
+ (and current-prefix-arg
+ (read-coding-system "Coding-system: "))))
+ ;; Emacs: do wildcards
+ ((and viper-emacs-p (boundp 'find-file-wildcards))
+ (list find-file-wildcards))))
+ ))
+
+ (defadvice find-file-other-window (before viper-add-suffix-advice activate)
+ "Use `read-file-name' for reading arguments."
+ (interactive (cons (read-file-name "Find file in other window: "
+ nil default-directory)
+ ;; XEmacs: if Mule & prefix arg, ask for coding system
+ (cond ((and viper-xemacs-p (featurep 'mule))
+ (list
+ (and current-prefix-arg
+ (read-coding-system "Coding-system: "))))
+ ;; Emacs: do wildcards
+ ((and viper-emacs-p (boundp 'find-file-wildcards))
+ (list find-file-wildcards))))
+ ))
+
+
+ (defadvice find-file-other-frame (before viper-add-suffix-advice activate)
+ "Use `read-file-name' for reading arguments."
+ (interactive (cons (read-file-name "Find file in other frame: "
+ nil default-directory)
+ ;; XEmacs: if Mule & prefix arg, ask for coding system
+ (cond ((and viper-xemacs-p (featurep 'mule))
+ (list
+ (and current-prefix-arg
+ (read-coding-system "Coding-system: "))))
+ ;; Emacs: do wildcards
+ ((and viper-emacs-p (boundp 'find-file-wildcards))
+ (list find-file-wildcards))))
+ ))
+
+
+ (defadvice read-file-name (around viper-suffix-advice activate)
+ "Tell `exit-minibuffer' to run `viper-file-add-suffix' as a hook."
+ (let ((viper-minibuffer-exit-hook
+ (append viper-minibuffer-exit-hook
+ '(viper-minibuffer-trim-tail viper-file-add-suffix))))
+ ad-do-it))
+
+ (defadvice start-kbd-macro (after viper-kbd-advice activate)
+ "Remove Viper's intercepting bindings for C-x ).
+ This may be needed if the previous `:map' command terminated abnormally."
+ (define-key viper-vi-intercept-map "\C-x)" nil)
+ (define-key viper-insert-intercept-map "\C-x)" nil)
+ (define-key viper-emacs-intercept-map "\C-x)" nil))
+
+ ;; catch frame switching event
+ (if (viper-window-display-p)
+ (if viper-xemacs-p
+ (add-hook 'mouse-leave-frame-hook
+ 'viper-remember-current-frame)
+ (defadvice handle-switch-frame (before viper-frame-advice activate)
+ "Remember the selected frame before the switch-frame event."
+ (viper-remember-current-frame (selected-frame)))) )
+
+ ) ; end viper-non-hook-settings
+
+;; Viperized read-key-sequence
+(defun viper-read-key-sequence (prompt &optional continue-echo)
+ (let (inhibit-quit event keyseq)
+ (setq keyseq (read-key-sequence prompt continue-echo))
+ (setq event (if viper-xemacs-p
+ (elt keyseq 0) ; XEmacs returns vector of events
+ (elt (listify-key-sequence keyseq) 0)))
+ (if (viper-ESC-event-p event)
+ (let (unread-command-events)
+ (viper-set-unread-command-events keyseq)
+ (if (viper-fast-keysequence-p)
+ (let ((viper-vi-global-user-minor-mode nil)
+ (viper-vi-local-user-minor-mode nil)
+ (viper-replace-minor-mode nil) ; actually unnecessary
+ (viper-insert-global-user-minor-mode nil)
+ (viper-insert-local-user-minor-mode nil))
+ (setq keyseq (read-key-sequence prompt continue-echo)))
+ (setq keyseq (read-key-sequence prompt continue-echo)))))
+ keyseq))
+
+
+\f
+;; Ask only if this-command/last-command are nil, i.e., when loading
+(cond ((and (eq viper-mode 'ask) (null this-command) (null last-command))
+ (save-window-excursion
+ (with-output-to-temp-buffer " *viper-info*"
+ (princ "
+You have loaded Viper, and are about to Viperize your emacs!
+
+Viper is a Package for Emacs Rebels and a venomous VI PERil,
+
+It's time to decide: to Viperize or not to Viperize...
+
+If you wish to Viperize AND make this your way of life, please put
+
+ (setq viper-mode t)
+ (require 'viper)
+
+in your .emacs file (preferably, close to the top).
+These two lines must come in the order given.
+
+** Viper users:
+ **** The startup file name has been changed from .vip to .viper
+ **** All vip-* style names have been converted to viper-* style."))
+ (if (y-or-n-p "Viperize? ")
+ (setq viper-mode t)
+ (setq viper-mode nil))
+ (message "")
+ (kill-buffer " *viper-info*")))
+
+ ;; If viper-mode is t, then just continue. Viper will kick in.
+ ((eq viper-mode t))
+ ;; Otherwise, it was asking Viper was not loaded through .emacs
+ ;; In this case, it was either through M-x viper-mode or via something
+ ;; else, like the custom widget. If Viper was loaded through
+ ;; M-x viper-mode, then viper will kick in anyway.
+ (t (setq viper-mode nil)))
+
+(defun viper-load-custom-file ()
+ (if (and (file-exists-p viper-custom-file-name)
+ (not noninteractive))
+ (load viper-custom-file-name)))
+
+
+
+\f
+;; Get viper standard value of SYMBOL. If symbol is customized, get its
+;; standard value. Otherwise, get the value saved in the alist STORAGE. If
+;; STORAGE is nil, use viper-saved-user-settings.
+(defun viper-standard-value (symbol &optional storage)
+ (or (eval (car (get symbol 'customized-value)))
+ (eval (car (get symbol 'saved-value)))
+ (nth 1 (assoc symbol (or storage viper-saved-user-settings)))))
+
+
+
+;; save non-viper vars that Viper might change
+(if (null viper-saved-non-viper-variables)
+ (setq viper-saved-non-viper-variables
+ (list
+ (cons 'next-line-add-newlines (list next-line-add-newlines))
+ (cons 'require-final-newline (list require-final-newline))
+ (cons 'scroll-step (list scroll-step))
+ (cons 'mode-line-buffer-identification
+ (list (default-value 'mode-line-buffer-identification)))
+ (cons 'global-mode-string (list global-mode-string))
+ (if viper-emacs-p
+ (cons 'mark-even-if-inactive (list mark-even-if-inactive)))
+ )))
+
+
+;; Set some useful macros, advices
+;; These must be BEFORE ~/.viper is loaded,
+;; so the user can unrecord them in ~/.viper.
+(if viper-mode
+ (progn
+ ;; set advices and some variables that give emacs Vi look.
+ (viper-non-hook-settings)
+
+ ;; repeat the 2nd previous command without rotating the command history
+ (viper-record-kbd-macro
+ (vector viper-repeat-from-history-key '\1) 'vi-state
+ [(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)
+ ;; repeat the 3d previous command without rotating the command history
+ (viper-record-kbd-macro
+ (vector viper-repeat-from-history-key '\2) 'vi-state
+ [(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)
+
+ ;; set macros for toggling case sensitivity and regexp search
+ (viper-set-searchstyle-toggling-macros nil)
+ ;; Make %%% toggle parsing comments for matching parentheses
+ (viper-set-parsing-style-toggling-macro nil)
+
+ ;; ~/.viper is loaded if exists
+ (viper-load-custom-file)
+
+ ;; should be after loading custom file to avoid the pesky msg that
+ ;; mouse-search/insert keys are already bound
+ (viper-bind-mouse-search-key)
+ (viper-bind-mouse-insert-key)
+ ))
+
+
+\f
+;; Applying Viper customization -- runs after (load .viper)
+
+;; Save user settings or Viper defaults for vars controled by
+;; viper-expert-level
+(if (null viper-saved-user-settings)
+ (setq viper-saved-user-settings
+ (list (cons 'viper-want-ctl-h-help (list viper-want-ctl-h-help))
+ (cons 'viper-always (list viper-always))
+ (cons 'viper-no-multiple-ESC (list viper-no-multiple-ESC))
+ (cons 'viper-ex-style-motion (list viper-ex-style-motion))
+ (cons 'viper-ex-style-editing
+ (list viper-ex-style-editing))
+ (cons 'viper-want-emacs-keys-in-vi
+ (list viper-want-emacs-keys-in-vi))
+ (cons 'viper-electric-mode (list viper-electric-mode))
+ (cons 'viper-want-emacs-keys-in-insert
+ (list viper-want-emacs-keys-in-insert))
+ (cons 'viper-re-search (list viper-re-search)))))
+
+
+(if viper-mode
+ (progn
+ (viper-set-minibuffer-style)
+ (if viper-buffer-search-char
+ (viper-buffer-search-enable))
+ (viper-update-syntax-classes 'set-default)
+ ))
+
+\f
+;;; Familiarize Viper with some minor modes that have their own keymaps
+(if viper-mode
+ (progn
+ (viper-harness-minor-mode "compile")
+ (viper-harness-minor-mode "outline")
+ (viper-harness-minor-mode "allout")
+ (viper-harness-minor-mode "xref")
+ (viper-harness-minor-mode "lmenu")
+ (viper-harness-minor-mode "vc")
+ (viper-harness-minor-mode "ltx-math") ; LaTeX-math-mode in AUC-TeX, which
+ (viper-harness-minor-mode "latex") ; sits in one of these two files
+ (viper-harness-minor-mode "cyrillic")
+ (viper-harness-minor-mode "russian")
+ (viper-harness-minor-mode "view-less")
+ (viper-harness-minor-mode "view")
+ (viper-harness-minor-mode "reftex")
+ (viper-harness-minor-mode "flyspell")
+ ))
+
+
+;; Intercept maps could go in viper-keym.el
+;; We keep them here in case someone redefines them in ~/.viper
+
+(define-key viper-vi-intercept-map viper-ESC-key 'viper-intercept-ESC-key)
+(define-key viper-insert-intercept-map viper-ESC-key 'viper-intercept-ESC-key)
+
+;; This is taken care of by viper-insert-global-user-map.
+;;(define-key viper-replace-map viper-ESC-key 'viper-intercept-ESC-key)
+
+
+;; The default viper-toggle-key is \C-z; for the novice, it suspends or
+;; iconifies Emacs
+(define-key viper-vi-intercept-map viper-toggle-key 'viper-toggle-key-action)
+(define-key
+ viper-emacs-intercept-map viper-toggle-key 'viper-change-state-to-vi)
+
+;;; Escape from Emacs and Insert modes to Vi for one command
+(define-key
+ viper-emacs-intercept-map "\C-c\\" 'viper-escape-to-vi)
+(define-key
+ viper-insert-intercept-map "\C-c\\" 'viper-escape-to-vi)
+
+(if viper-mode
+ (setq-default viper-emacs-intercept-minor-mode t
+ viper-emacs-local-user-minor-mode t
+ viper-emacs-global-user-minor-mode t
+ viper-emacs-kbd-minor-mode t
+ viper-emacs-state-modifier-minor-mode t))
+(if (and viper-mode (eq viper-current-state 'emacs-state))
+ (setq viper-emacs-intercept-minor-mode t
+ viper-emacs-local-user-minor-mode t
+ viper-emacs-global-user-minor-mode t
+ viper-emacs-kbd-minor-mode t
+ viper-emacs-state-modifier-minor-mode t))
+
+
+(if (and viper-mode
+ (or viper-always
+ (and (< viper-expert-level 5) (> viper-expert-level 0))))
+ (viper-set-hooks))
+
+;; Let all minor modes take effect after loading.
+;; This may not be enough, so we also set default minor-mode-alist.
+;; Without setting the default, new buffers that come up in emacs mode have
+;; minor-mode-map-alist = nil, unless we call viper-change-state-*
+(if (and viper-mode (eq viper-current-state 'emacs-state))
+ (progn
+ (viper-change-state-to-emacs)
+ (setq-default minor-mode-map-alist minor-mode-map-alist)
+ ))
+
+(if (and viper-mode (this-major-mode-requires-vi-state major-mode))
+ (viper-mode))
+
+(if viper-mode
+ (setq initial-major-mode
+ `(lambda ()
+ (funcall (quote ,initial-major-mode))
+ (set-viper-state-in-major-mode))
+ ))
+
+
+
+(run-hooks 'viper-load-hook) ; the last chance to change something
+
+(provide 'viper)
+
+
+;;; Local Variables:
+;;; eval: (put 'viper-deflocalvar 'lisp-indent-hook 'defun)
+;;; End:
+
+;;; viper.el ends here
HCoop / bpt / emacs.git / blobdiff