mirror of
https://git.savannah.gnu.org/git/emacs.git
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519f9e144f
* lisp/emulation/viper-util.el (viper-memq-char): Make into obsolete function alias for 'memq'. Update callers. (viper-char-equal): Make into obsolete function alias for 'eq'. Update callers. (viper-color-display-p): Make into obsolete function alias for 'x-display-color-p'. Update callers.
1257 lines
47 KiB
EmacsLisp
1257 lines
47 KiB
EmacsLisp
;;; viper.el --- A full-featured Vi emulator for Emacs -*- lexical-binding:t -*-
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;; a VI Plan for Emacs Rescue,
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;; and a venomous VI PERil.
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;; Viper Is also a Package for Emacs Rebels.
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;; Copyright (C) 1994-2021 Free Software Foundation, Inc.
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;; Author: Michael Kifer <kifer@cs.stonybrook.edu>
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;; Keywords: emulations
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;; Version: 3.14.1
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;; Yoni Rabkin <yoni@rabkins.net> contacted the maintainer of this
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;; file on 20/3/2008, and the maintainer agreed that when a bug is
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;; filed in the Emacs bug reporting system against this file, a copy
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;; of the bug report be sent to the maintainer's email address.
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(defconst viper-version "3.14.2 of July 4, 2013"
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"The current version of Viper.")
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Viper is a full-featured Vi emulator for Emacs. It emulates and
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;; improves upon the standard features of Vi and, at the same time, allows
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;; full access to all Emacs facilities. Viper supports multiple undo,
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;; file name completion, command, file, and search history and it extends
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;; Vi in many other ways. Viper is highly customizable through the various
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;; hooks, user variables, and keymaps. It is implemented as a collection
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;; of minor modes and it is designed to provide full access to all Emacs
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;; major and minor modes.
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;;
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;;; History:
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;;
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;; Viper is a new name for a package formerly known as VIP-19,
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;; which was a successor of VIP version 3.5 by Masahiko Sato
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;; <ms@sail.stanford.edu> and VIP version 4.2 by Aamod Sane
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;; <sane@cs.uiuc.edu>. Some ideas from vip 4.4.2 by Aamod Sane
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;; were also shamelessly plagiarized.
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;;
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;; Viper maintains some degree of compatibility with these older
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;; packages. See the documentation for customization.
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;;
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;; The main difference between Viper and these older packages are:
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;;
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;; 1. Viper emulates Vi at several levels, from almost complete conformity
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;; to a rather loose Vi-compliance.
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;;
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;; 2. Viper provides full access to all major and minor modes of Emacs
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;; without the need to type extra keys.
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;; The older versions of VIP (and other Vi emulators) do not work with
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;; some major and minor modes.
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;;
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;; 3. Viper supports vi-style undo.
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;;
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;; 4. Viper fully emulates (and improves upon) vi's replacement mode.
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;;
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;; 5. Viper has a better interface to ex, including command, variable, and
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;; file name completion.
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;;
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;; 6. Viper uses native Emacs history and completion features; it doesn't
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;; rely on other packages (such as gmhist.el and completer.el) to provide
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;; these features.
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;;
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;; 7. Viper supports Vi-style editing in the minibuffer, by allowing the
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;; user to switch from Insert state to Vi state to Replace state, etc.
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;;
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;; 8. Viper keeps history of recently inserted pieces of text and recently
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;; executed Vi-style destructive commands, such as `i', `d', etc.
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;; These pieces of text can be inserted in later insertion commands;
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;; the previous destructive commands can be re-executed.
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;;
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;; 9. Viper has Vi-style keyboard macros, which enhances the similar
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;; facility in the original Vi.
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;; First, one can execute any Emacs command while defining a
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;; macro, not just the Vi commands. Second, macros are defined in a
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;; WYSYWYG mode, using an interface to Emacs's WYSIWYG style of defining
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;; macros. Third, in Viper, one can define macros that are specific to
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;; a given buffer, a given major mode, or macros defined for all buffers.
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;; The same macro name can have several different definitions:
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;; one global, several definitions for various major modes, and
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;; definitions for specific buffers.
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;; Buffer-specific definitions override mode-specific
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;; definitions, which, in turn, override global definitions.
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;;
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;;
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;;; Installation:
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;; -------------
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;;
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;; (require 'viper)
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;;
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;;; Acknowledgments:
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;; ----------------
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;; Bug reports and ideas contributed by many users have helped
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;; improve Viper and the various versions of VIP.
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;; See the manual for a complete list of contributors.
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;;
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;;
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;;; Notes:
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;;
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;; 1. Major modes.
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;; In most cases, Viper handles major modes correctly, i.e., they come up
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;; in the right state (either vi-state or emacs-state). For instance, text
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;; files come up in vi-state, while, say, Dired appears in emacs-state by
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;; default.
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;; However, some modes do not appear in the right mode in the beginning,
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;; usually because they neglect to follow Emacs conventions (e.g., they don't
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;; use kill-all-local-variables when they start). Some major modes
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;; may fail to come up in emacs-state if they call hooks, such as
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;; text-hook, for no good reason.
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;;
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;; As an immediate solution, you can hit C-z to bring about the right mode.
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;; An interim solution is to add an appropriate hook to the mode like this:
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;;
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;; (add-hook 'your-favorite-mode #'viper-mode)
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;; or
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;; (add-hook 'your-favorite-mode #'viper-change-state-to-emacs)
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;;
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;; whichever applies. The right thing to do, however, is to complain to the
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;; author of the respective package. (Sometimes they also neglect to equip
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;; their modes with hooks, which is one more reason for complaining.)
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;;
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;; 2. Keymap handling
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;; Each Viper state (insert, vi, replace) is implemented as a collection of
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;; several minor modes, each with its own keymap.
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;;
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;; Viper's Vi state consists of seven minor modes:
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;;
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;; viper-vi-intercept-minor-mode
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;; viper-vi-local-user-minor-mode
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;; viper-vi-global-user-minor-mode
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;; viper-vi-kbd-minor-mode
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;; viper-vi-state-modifier-minor-mode
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;; viper-vi-diehard-minor-mode
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;; viper-vi-basic-minor-mode
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;;
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;; Bindings done to the keymap of the first mode overshadow those done to
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;; the second, which, in turn, overshadows those done to the third, etc.
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;;
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;; The last viper-vi-basic-minor-mode contains most of the usual Vi bindings
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;; in its edit mode. This mode provides access to all Emacs facilities.
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;; Novice users, however, may want to set their viper-expert-level to 1 in
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;; their viper-custom-file-name. This will enable viper-vi-diehard-minor-mode.
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;; This minor mode's bindings make Viper simulate the usual Vi very closely.
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;; For instance, C-c will not have its standard Emacs binding
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;; and so many of the goodies of Emacs are not available.
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;;
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;; A skilled user should set viper-expert-level to at least 3. This will
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;; enable `C-c' and many Emacs facilities will become available.
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;; In this case, viper-vi-diehard-minor-mode is inactive.
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;;
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;; Viper gurus should have at least
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;; (setq viper-expert-level 4)
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;; in their viper-custom-file-name. This will unsuppress all Emacs keys
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;; that are not essential for VI-style editing.
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;; Pick-and-choose users may want to put
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;; (setq viper-expert-level 5)
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;; in viper-custom-file-name. Viper will then leave it up to the user to
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;; set the variables viper-want-* See viper-set-expert-level for details.
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;;
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;; The very first minor mode, viper-vi-intercept-minor-mode, is of no
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;; concern for the user. It is needed to bind Viper's vital keys, such as
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;; ESC and C-z.
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;;
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;; The second mode, viper-vi-local-user-minor-mode, usually has an
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;; empty keymap. However, the user can set bindings in this keymap, which
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;; will overshadow the corresponding bindings in the other two minor
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;; modes. This is useful, for example, for setting up ZZ in gnus,
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;; rmail, mh-e, etc., to send message instead of saving it in a file.
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;; Likewise, in Dired mode, you may want to bind ZN and ZP to commands
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;; that would visit the next or the previous file in the Dired buffer.
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;; Setting local keys is tricky, so don't do it directly. Instead, use
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;; viper-add-local-keys function (see its doc).
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;;
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;; The third minor mode, viper-vi-global-user-minor-mode, is also intended
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;; for the users but, unlike viper-vi-local-user-minor-mode, its key
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;; bindings are seen in all Viper buffers. This mode keys can be done
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;; with define-key command.
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;;
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;; The fourth minor mode, viper-vi-kbd-minor-mode, is used by keyboard
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;; macros. Users are NOT supposed to modify this keymap directly.
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;;
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;; The fifth mode, viper-vi-state-modifier-minor-mode, can be used to set
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;; key bindings that are visible in some major modes but not in others.
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;;
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;; Users are allowed to modify keymaps that belong to
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;; viper-vi-local-user-minor-mode, viper-vi-global-user-minor-mode,
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;; and viper-vi-state-modifier-minor-mode only.
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;;
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;; Viper's Insert state also has seven minor modes:
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;;
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;; viper-insert-intercept-minor-mode
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;; viper-insert-local-user-minor-mode
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;; viper-insert-global-user-minor-mode
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;; viper-insert-kbd-minor-mode
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;; viper-insert-state-modifier-minor-mode
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;; viper-insert-diehard-minor-mode
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;; viper-insert-basic-minor-mode
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;;
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;; As with VI's editing modes, the first mode,
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;; viper-insert-intercept-minor-mode is used to bind vital keys that are not
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;; to be changed by the user.
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;;
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;; The next mode, viper-insert-local-user-minor-mode, is used to customize
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;; bindings in the insert state of Viper. The third mode,
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;; viper-insert-global-user-minor-mode is like
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;; viper-insert-local-user-minor-mode, except that its bindings are seen in
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;; all Viper buffers. As with viper-vi-local-user-minor-mode, its bindings
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;; should be done via the function viper-add-local-keys. Bindings for
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;; viper-insert-global-user-minor-mode can be set with the define-key command.
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;;
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;; The next minor mode, viper-insert-kbd-minor-mode,
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;; is used for keyboard VI-style macros defined with :map!.
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;;
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;; The fifth minor mode, viper-insert-state-modifier-minor-mode, is like
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;; viper-vi-state-modifier-minor-mode, except that it is used in the Insert
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;; state; it can be used to modify keys in a mode-specific fashion.
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;;
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;; The minor mode viper-insert-diehard-minor-mode is in effect when
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;; the user wants a high degree of Vi compatibility (a bad idea, really!).
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;; The last minor mode, viper-insert-basic-minor-mode, is always in effect
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;; when Viper is in insert state. It binds a small number of keys needed for
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;; Viper's operation.
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;;
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;; Finally, Viper provides minor modes for overriding bindings set by Emacs
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;; modes when Viper is in Emacs state:
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;;
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;; viper-emacs-local-user-minor-mode
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;; viper-emacs-global-user-minor-mode
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;; viper-emacs-kbd-minor-mode
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;; viper-emacs-state-modifier-minor-mode
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;;
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;; These minor modes are in effect when Viper is in Emacs state. The keymap
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;; associated with viper-emacs-global-user-minor-mode,
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;; viper-emacs-global-user-map, overrides the global and local keymaps as
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;; well as the minor mode keymaps set by other modes. The keymap of
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;; viper-emacs-local-user-minor-mode, viper-emacs-local-user-map, overrides
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;; everything, but it is used on a per buffer basis.
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;; The keymap associated with viper-emacs-state-modifier-minor-mode
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;; overrides keys on a per-major-mode basis. The mode
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;; viper-emacs-kbd-minor-mode is used to define Vi-style macros in Emacs
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;; state.
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;;
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;; 3. There is also one minor mode that is used when Viper is in its
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;; replace-state (used for commands like cw, C, etc.). This mode is
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;; called
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;;
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;; viper-replace-minor-mode
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;;
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;; and its keymap is viper-replace-map. Replace minor mode is always
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;; used in conjunction with the minor modes for insert-state, and its
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;; keymap overshadows the keymaps for insert minor modes.
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;;
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;; 4. Defining buffer-local bindings in Vi and Insert modes.
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;; As mentioned before, sometimes, it is convenient to have
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;; buffer-specific of mode-specific key bindings in Vi and insert modes.
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;; Viper provides a special function, viper-add-local-keys, to do precisely
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;; this. For instance, is you need to add couple of mode-specific bindings
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;; to Insert mode, you can put
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;;
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;; (viper-add-local-keys 'insert-state '((key1 . func1) (key2 .func2)))
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;;
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;; somewhere in a hook of this major mode. If you put something like this
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;; in your own elisp function, this will define bindings specific to the
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;; buffer that was current at the time of the call to viper-add-local-keys.
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;; The only thing to make sure here is that the major mode of this buffer
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;; is written according to Emacs conventions, which includes a call to
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;; (kill-all-local-variables). See viper-add-local-keys for more details.
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;;
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;;
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;; TO DO (volunteers?):
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;;
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;; 1. Some of the code that is inherited from VIP-3.5 is rather
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;; convoluted. Instead of viper-command-argument, keymaps should bind the
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;; actual commands. E.g., "dw" should be bound to a generic command
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;; viper-delete that will delete things based on the value of
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;; last-command-event. This would greatly simplify the logic and the code.
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;;
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;; 2. Somebody should venture to write a customization package a la
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;; options.el that would allow the user to change values of variables
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;; that meet certain specs (e.g., match a regexp) and whose doc string
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;; starts with a '*'. Then, the user should be offered to save
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;; variables that were changed. This will make user's customization job
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;; much easier.
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;;
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;;; Code:
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(require 'cl-lib)
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;; compiler pacifier
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(defvar mark-even-if-inactive)
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(defvar viper-expert-level)
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(defvar viper-mode-string)
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(defvar viper-major-mode-modifier-list)
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;; end pacifier
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(require 'viper-init)
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(require 'viper-keym)
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;; better be defined before Viper custom group.
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(defvar viper-custom-file-name (locate-user-emacs-file "viper" ".viper")
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"Viper customization file.
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If set by the user, this must be done _before_ Viper is loaded in `~/.emacs'.")
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(defgroup viper nil
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"Vi emulation within Emacs.
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NOTE: Viper customization should be saved in `viper-custom-file-name'."
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:prefix "viper-"
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:group 'emulations)
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(require 'viper-cmd)
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(defgroup viper-misc nil
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"Miscellaneous Viper customization."
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:prefix "viper-"
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:group 'viper)
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(defcustom viper-always t
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"Non-nil means, arrange for vi-state to be a default when appropriate.
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This is different from `viper-mode' variable in that `viper-mode' determines
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whether to use Viper in the first place, while `viper-always', if nil, lets
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user decide when to invoke Viper in a major mode."
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:type 'boolean
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:tag "Always Invoke Viper")
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;; Non-viper variables that need to be saved in case the user decides to
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;; de-viperize emacs.
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(defvar viper-saved-non-viper-variables nil)
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(defcustom viper-mode (cond (noninteractive nil)
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(t 'ask))
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"To Viperize or not to Viperize.
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If t, viperize Emacs. If nil -- don't. If `ask', ask the user.
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This variable is used primarily when Viper is being loaded.
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Must be set in your init file before Viper is loaded.
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DO NOT set this variable interactively, unless you are using the customization
|
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widget."
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:type '(choice (const nil) (const t) (const ask))
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:tag "Set Viper Mode on Loading")
|
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(defcustom viper-vi-state-mode-list
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'(fundamental-mode
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makefile-mode
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awk-mode
|
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m4-mode
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||
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))
|
||
|
||
(defcustom viper-emacs-state-mode-list
|
||
'(Custom-mode
|
||
|
||
dired-mode
|
||
efs-mode
|
||
tar-mode
|
||
egg-status-buffer-mode
|
||
|
||
browse-kill-ring-mode
|
||
recentf-mode
|
||
recentf-dialog-mode
|
||
occur-mode
|
||
|
||
mh-folder-mode
|
||
gnus-group-mode
|
||
gnus-summary-mode
|
||
|
||
completion-list-mode
|
||
help-mode
|
||
|
||
Info-mode
|
||
Buffer-menu-mode
|
||
compilation-mode
|
||
|
||
rcirc-mode
|
||
|
||
jde-javadoc-checker-report-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))
|
||
|
||
(defcustom viper-insert-state-mode-list
|
||
'(internal-ange-ftp-mode
|
||
comint-mode
|
||
gud-mode
|
||
inferior-emacs-lisp-mode
|
||
erc-mode
|
||
eshell-mode
|
||
shell-mode)
|
||
"A list of major modes that should come up in Vi Insert state."
|
||
:type '(repeat symbol))
|
||
|
||
|
||
;; used to set viper-major-mode-modifier-list in defcustom
|
||
(defun viper-apply-major-mode-modifiers (&optional symbol value)
|
||
(if symbol
|
||
(set symbol value))
|
||
(mapc (lambda (triple)
|
||
(viper-modify-major-mode
|
||
(nth 0 triple) (nth 1 triple) (symbol-value (nth 2 triple))))
|
||
viper-major-mode-modifier-list))
|
||
|
||
;; We change standard bindings in some major modes, 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)
|
||
(gud-mode insert-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-gnus-modifier-map)
|
||
(gnus-summary-mode emacs-state viper-gnus-modifier-map)
|
||
(Info-mode emacs-state viper-slash-and-colon-map)
|
||
(Buffer-menu-mode emacs-state viper-slash-and-colon-map)
|
||
(erc-mode insert-state viper-comint-mode-modifier-map)
|
||
(erc-mode vi-state viper-comint-mode-modifier-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 `keymap' 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)
|
||
|
||
|
||
|
||
;;;###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 in Emacs. See Info node `(viper)Top'."
|
||
(interactive)
|
||
(if (not noninteractive)
|
||
(progn
|
||
;; if the user requested viper-mode explicitly
|
||
(if viper-mode
|
||
()
|
||
(setq viper-mode t)
|
||
;; FIXME: Don't reload!
|
||
(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)
|
||
(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 Emacs.
|
||
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's 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:
|
||
|
||
\\[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)))
|
||
|
||
(or (apply #'derived-mode-p viper-emacs-state-mode-list) ; don't switch to Vi
|
||
(apply #'derived-mode-p viper-insert-state-mode-list) ; don't switch
|
||
(viper-change-state-to-vi))
|
||
))
|
||
|
||
(if (eq major-mode 'viper-mode)
|
||
(setq major-mode 'fundamental-mode))
|
||
)
|
||
|
||
|
||
;; 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)
|
||
(let ((major-mode mode))
|
||
(cond ((apply #'derived-mode-p viper-vi-state-mode-list) t)
|
||
((apply #'derived-mode-p viper-emacs-state-mode-list) nil)
|
||
((apply #'derived-mode-p viper-insert-state-mode-list) nil)
|
||
(t (and (eq (key-binding "a") 'self-insert-command)
|
||
(eq (key-binding " ") 'self-insert-command))))))
|
||
|
||
|
||
;; This hook designed to enable Vi-style editing in comint-based modes."
|
||
(defun viper-comint-mode-hook ()
|
||
(setq-local require-final-newline nil)
|
||
(setq 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 (symbol-value 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-hook symbol #'viper-minibuffer-post-command-hook)
|
||
(remove-hook symbol #'viper-minibuffer-setup-sentinel)
|
||
(remove-hook symbol #'viper-major-mode-change-sentinel)
|
||
(remove-hook symbol #'set-viper-state-in-major-mode)
|
||
(remove-hook symbol #'viper-post-command-sentinel)
|
||
)))
|
||
|
||
;; Remove local value in all existing buffers
|
||
;; This doesn't delocalize vars (which would have been desirable)
|
||
(defun viper-delocalize-var (symbol)
|
||
(dolist (buf (buffer-list))
|
||
(with-current-buffer buf
|
||
(kill-local-variable symbol))))
|
||
|
||
(defvar viper--advice-list nil)
|
||
|
||
(defun viper--advice-add (function where advice)
|
||
(advice-add function where advice)
|
||
(push (cons function advice) viper--advice-list))
|
||
|
||
(defun viper--deactivate-advice-list ()
|
||
(mapc (lambda (n)
|
||
(advice-remove
|
||
(car n)
|
||
(cdr n)))
|
||
viper--advice-list)
|
||
(setq viper--advice-list nil))
|
||
|
||
(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 can't undo some Viper settings."
|
||
(interactive)
|
||
(viper-setup-ESC-to-escape nil)
|
||
;; 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))
|
||
|
||
(setq-default major-mode
|
||
(viper-standard-value 'major-mode
|
||
viper-saved-non-viper-variables))
|
||
|
||
(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 'require-final-newline)
|
||
|
||
;; deactivate all advices done by Viper.
|
||
(viper--deactivate-advice-list)
|
||
|
||
(setq viper-mode nil)
|
||
|
||
(setq emulation-mode-map-alists
|
||
(delq 'viper--intercept-key-maps
|
||
(delq 'viper--key-maps emulation-mode-map-alists)))
|
||
|
||
(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 'erc-mode-hook #'viper-comint-mode-hook)
|
||
(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 matching "viper-" are
|
||
;; deactivated.
|
||
) ; 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 ()
|
||
(mapc
|
||
(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))
|
||
((cl-member-if #'derived-mode-p 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 (cl-member-if #'derived-mode-p
|
||
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))
|
||
|
||
|
||
;;; Handling of tty's ESC event
|
||
|
||
;; On a tty, an ESC event can either be the user hitting the escape key, or
|
||
;; some element of a byte sequence used to encode for example cursor keys.
|
||
;; So we try to recognize those events that correspond to the escape key and
|
||
;; turn them into `escape' events (same as used under GUIs). The heuristic we
|
||
;; use to distinguish the two cases is based, as usual, on a timeout, and on
|
||
;; the fact that the special ESC=>escape mapping only takes place if the whole
|
||
;; last key-sequence so far is just [?\e], i.e. either we're still in
|
||
;; read-key-sequence, or the last read-key-sequence only read [?\e], which
|
||
;; should ideally never happen because it should have been mapped to [escape].
|
||
|
||
(defun viper--tty-ESC-filter (map)
|
||
(if (and (equal (this-single-command-keys) [?\e])
|
||
(sit-for (/ viper-fast-keyseq-timeout 1000)))
|
||
[escape] map))
|
||
|
||
(defun viper--lookup-key (map key)
|
||
"Kind of like `lookup-key'.
|
||
Two differences:
|
||
- KEY is a single key, not a sequence.
|
||
- the result is the \"raw\" binding, so it can be a `menu-item', rather than the
|
||
binding contained in that menu item."
|
||
(catch 'found
|
||
(map-keymap (lambda (k b) (if (equal key k) (throw 'found b))) map)))
|
||
|
||
(defun viper-catch-tty-ESC ()
|
||
"Setup key mappings of current terminal to turn a tty's ESC into `escape'."
|
||
(when (memq (terminal-live-p (frame-terminal)) '(t pc))
|
||
(let ((esc-binding (viper-uncatch-tty-ESC)))
|
||
(define-key input-decode-map
|
||
[?\e] `(menu-item "" ,esc-binding :filter viper--tty-ESC-filter)))))
|
||
|
||
(defun viper-uncatch-tty-ESC ()
|
||
"Don't hack ESC into `escape' any more."
|
||
(let ((b (viper--lookup-key input-decode-map ?\e)))
|
||
(and (eq 'menu-item (car-safe b))
|
||
(eq 'viper--tty-ESC-filter (nth 4 b))
|
||
(define-key input-decode-map [?\e] (setq b (nth 2 b))))
|
||
b))
|
||
|
||
(defun viper-setup-ESC-to-escape (enable)
|
||
(if enable
|
||
(add-hook 'tty-setup-hook #'viper-catch-tty-ESC)
|
||
(remove-hook 'tty-setup-hook #'viper-catch-tty-ESC))
|
||
(let ((seen ()))
|
||
(dolist (frame (frame-list))
|
||
(let ((terminal (frame-terminal frame)))
|
||
(unless (memq terminal seen)
|
||
(push terminal seen)
|
||
(with-selected-frame frame
|
||
(if enable (viper-catch-tty-ESC) (viper-uncatch-tty-ESC))))))))
|
||
|
||
;; 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-value 'major-mode) #'fundamental-mode)
|
||
;; FIXME: We should use after-change-major-mode-hook instead!
|
||
(setq-default major-mode #'viper-mode))
|
||
|
||
(viper-setup-ESC-to-escape t)
|
||
|
||
(add-hook 'change-major-mode-hook #'viper-major-mode-change-sentinel)
|
||
(add-hook 'find-file-hook #'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)
|
||
|
||
;; if viper is started from .emacs, it might be impossible to get certain
|
||
;; info about the display and windows until emacs initialization is complete
|
||
;; So do it via the window-setup-hook
|
||
(add-hook 'window-setup-hook
|
||
(lambda ()
|
||
(modify-frame-parameters
|
||
(selected-frame)
|
||
(list (cons 'viper-vi-state-cursor-color
|
||
(viper-get-cursor-color))))
|
||
(setq viper-vi-state-cursor-color (viper-get-cursor-color))
|
||
))
|
||
|
||
;; Tell vc-diff to put *vc* in Vi mode
|
||
(viper--advice-add 'vc-diff :after #'viper-change-state-to-vi)
|
||
(viper--advice-add 'emerge-quit :after #'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.
|
||
(viper--advice-add 'read-passwd-1 :before #'viper-change-state-to-emacs)
|
||
|
||
(viper--advice-add 'self-insert-command :around
|
||
(lambda (orig-fun &rest args)
|
||
;; FIXME: Use remapping?
|
||
(if (and (eq viper-current-state 'vi-state)
|
||
(called-interactively-p 'interactive))
|
||
(beep 1)
|
||
(apply orig-fun args))))
|
||
|
||
(viper--advice-add 'set-cursor-color :after
|
||
(lambda (color-name)
|
||
"Change cursor color in VI state."
|
||
(modify-frame-parameters
|
||
(selected-frame)
|
||
(list (cons 'viper-vi-state-cursor-color color-name)))
|
||
(setq viper-vi-state-cursor-color color-name)))
|
||
|
||
|
||
;; needs to be as early as possible
|
||
(add-to-ordered-list
|
||
'emulation-mode-map-alists 'viper--intercept-key-maps 100)
|
||
;; needs to be after cua-mode
|
||
(add-to-ordered-list 'emulation-mode-map-alists 'viper--key-maps 500)
|
||
|
||
;; Emacs shell, ange-ftp, and comint-based modes
|
||
(add-hook 'comint-mode-hook #'viper-comint-mode-hook) ; comint
|
||
(add-hook 'erc-mode-hook #'viper-comint-mode-hook) ; ERC
|
||
|
||
(add-hook 'eshell-mode-hook
|
||
(lambda () (setq viper-auto-indent nil)))
|
||
|
||
(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.
|
||
(viper--advice-add 'rmail-cease-edit :after #'viper-change-state-to-emacs)
|
||
|
||
;; ISO accents.
|
||
(viper--advice-add 'iso-accents-mode :after
|
||
(lambda (arg &rest _)
|
||
"Set viper-automatic-iso-accents to iso-accents-mode."
|
||
(defvar iso-accents-mode)
|
||
(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 nil ;; (featurep 'emacs) ;;The hooks should now work!
|
||
(progn
|
||
(viper--advice-add 'deactivate-input-method :after
|
||
#'viper-deactivate-input-method-action)
|
||
(viper--advice-add 'activate-input-method :after
|
||
#'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-deactivate-hook
|
||
#'viper-deactivate-input-method-action t)))
|
||
)
|
||
(viper--advice-add 'toggle-input-method :around
|
||
(lambda (orig-fun &rest args)
|
||
"Adjust input-method toggling in vi-state."
|
||
(if (and viper-special-input-method (eq viper-current-state 'vi-state))
|
||
(deactivate-input-method)
|
||
(apply orig-fun args))))
|
||
|
||
) ; viper-set-hooks
|
||
|
||
|
||
;; these are primarily advices and Vi-ish variable settings
|
||
(defun viper-non-hook-settings ()
|
||
|
||
;;;; 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)
|
||
|
||
;; don't bark when mark is inactive
|
||
(setq mark-even-if-inactive t)
|
||
|
||
(setq scroll-step 1)
|
||
|
||
;; Variable displaying the current Viper state in the mode line.
|
||
(or (memq 'viper-mode-string global-mode-string)
|
||
(setq global-mode-string
|
||
(append '("" viper-mode-string) (cdr global-mode-string))))
|
||
|
||
(viper--advice-add 'read-file-name :around
|
||
(lambda (orig-fun &rest args)
|
||
"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))))
|
||
(apply orig-fun args))))
|
||
|
||
(viper--advice-add 'start-kbd-macro :after
|
||
(lambda (&rest _)
|
||
"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)))
|
||
|
||
(viper--advice-add 'add-minor-mode :after
|
||
(lambda (&rest _)
|
||
"Run viper-normalize-minor-mode-map-alist after adding a minor mode."
|
||
(viper-normalize-minor-mode-map-alist)))
|
||
|
||
;; catch frame switching event
|
||
(if (viper-window-display-p)
|
||
(viper--advice-add
|
||
'handle-switch-frame :before
|
||
#'viper-remember-current-frame))
|
||
|
||
) ; end viper-non-hook-settings
|
||
|
||
|
||
|
||
;; 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 init file (preferably, close to the top).
|
||
These two lines must come in the order given."))
|
||
(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)))
|
||
|
||
|
||
|
||
|
||
|
||
|
||
;; save non-viper vars that Viper might change
|
||
(if (null viper-saved-non-viper-variables)
|
||
(setq viper-saved-non-viper-variables
|
||
(list
|
||
(cons 'major-mode (list (default-value 'major-mode)))
|
||
(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))
|
||
(cons 'mark-even-if-inactive (list mark-even-if-inactive)))))
|
||
|
||
|
||
;; Set some useful macros, advices
|
||
;; These must be BEFORE viper-custom-file-name is loaded,
|
||
;; so the user can unrecord them in viper-custom-file-name.
|
||
(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-custom-file-name 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)
|
||
))
|
||
|
||
|
||
|
||
;; Applying Viper customization -- runs after (load viper-custom-file-name)
|
||
|
||
;; Save user settings or Viper defaults for vars controlled 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)))))
|
||
|
||
|
||
|
||
;; Intercept maps could go in viper-keym.el
|
||
;; We keep them here in case someone redefines them in viper-custom-file-name
|
||
|
||
(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)
|
||
|
||
;; Removed to avoid bad interaction with cua-mode.
|
||
;; 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)
|
||
|
||
(when viper-mode
|
||
(viper-set-minibuffer-style)
|
||
(if viper-buffer-search-char
|
||
(viper-buffer-search-enable))
|
||
(viper-update-syntax-classes 'set-default)
|
||
|
||
;; Familiarize Viper with some minor modes that have their own keymaps
|
||
(viper-harness-minor-mode "compile")
|
||
(viper-harness-minor-mode "outline")
|
||
(viper-harness-minor-mode "allout")
|
||
(viper-harness-minor-mode "xref")
|
||
(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")
|
||
|
||
(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 (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 (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-*
|
||
(when (eq viper-current-state 'emacs-state)
|
||
(viper-change-state-to-emacs))
|
||
|
||
(if (this-major-mode-requires-vi-state major-mode)
|
||
(viper-mode))
|
||
|
||
(add-function :after initial-major-mode #'set-viper-state-in-major-mode))
|
||
|
||
|
||
|
||
(run-hooks 'viper-load-hook) ; the last chance to change something
|
||
|
||
(provide 'viper)
|
||
|
||
;;; viper.el ends here
|