This is evil.info, produced by makeinfo version 6.1 from evil.texi. This manual is for Evil (version 0.1 of 2011-07-30), an extensible vi layer for Emacs. Copyright © 2011 Frank Fischer and Vegard Øye. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled "GNU Free Documentation License". The Evil team thanks everyone at gmane.emacs.vim-emulation for their feedback and contributions. INFO-DIR-SECTION Emacs START-INFO-DIR-ENTRY * Evil: (evil). Extensible vi layer for Emacs. END-INFO-DIR-ENTRY  File: evil.info, Node: Top, Next: Overview, Prev: (dir), Up: (dir) Evil **** This is the manual for Evil, an extensible vi layer for Emacs. * Menu: * Overview:: * Settings:: * Keymaps:: * Hooks:: * Macros:: * Other internals:: * GNU Free Documentation License::  File: evil.info, Node: Overview, Next: Settings, Up: Top 1 Overview ********** Evil is an extensible vi layer for Emacs. It emulates the main features of Vim,(1) turning Emacs into a modal editor. Like Emacs in general, Evil is extensible in Emacs Lisp. * Menu: * Installation:: * Modes and states:: ---------- Footnotes ---------- (1) Vim is the most popular version of "vi", a modal text editor with many implementations. Vim also adds some functions of its own, like Visual selection and text objects. For more information, see:  File: evil.info, Node: Installation, Next: Modes and states, Up: Overview 1.1 Installation ================ Evil lives in a Git repository. To download Evil, do: git clone https://github.com/emacs-evil/evil.git Move Evil to '~/.emacs.d/evil'. Then add the following lines to '~/.emacs': (add-to-list 'load-path "~/.emacs.d/evil") (require 'evil) (evil-mode 1) Evil requires 'undo-tree.el' to provide linear undo and undo branches. It is available from EmacsWiki.(1) (A copy of 'undo-tree.el' is also included in the Git repository.) ---------- Footnotes ---------- (1)  File: evil.info, Node: Modes and states, Prev: Installation, Up: Overview 1.2 Modes and states ==================== The next time Emacs is started, it will come up in "Normal state", denoted by '' on the mode line. This is where the main vi bindings are defined. Note that you can always disable Normal state with 'C-z', which switches to an "Emacs state" (denoted by '') in which vi keys are completely disabled. Press 'C-z' again to switch back to Normal state. Evil uses the term "state" for what is called a "mode" in vi, since "mode" already has its own meaning in Emacs. Evil defines a number of states, such as Normal state (''), Insert state (''), Visual state (''), Replace state (''), Operator-Pending state (''), Motion state ('') and Emacs state (''). Each state has its own keymaps and customization variables. Meanwhile, a "mode" in Emacs is a set of key bindings for editing a certain sort of text, like 'emacs-lisp-mode' for Emacs Lisp. Modes may include custom bindings for Evil states.  File: evil.info, Node: Settings, Next: Keymaps, Prev: Overview, Up: Top 2 Settings ********** Evil's behavior can be adjusted by setting various variables. The current values may be inspected by doing 'M-x customize-group RET evil RET'. To change the value of a variable, add a 'setq' form to '~/.emacs', preferably before Evil is loaded:(1) (setq evil-shift-width 8) ;; Load Evil (require 'evil) ... Note that if a variable is buffer-local, you must use 'setq-default' instead of 'setq' to change its global value. -- Variable: evil-auto-indent Whether the current line is indented when entering Insert state. If 't' (the default), then the line is indented. If 'nil', then the line is not indented. Buffer-local. -- Variable: evil-shift-width The number of columns a line is shifted by the commands '>' and '<'. -- Variable: evil-repeat-move-cursor If 't' (the default), then repeating a command with '.' may change the position of the cursor. If 'nil', then the original position is preserved. -- Variable: evil-find-skip-newlines If 't', then 'f', 'F', 't' and 'T' may skip over newlines to find a character. If 'nil' (the default), then they are restricted to the current line. -- Variable: evil-move-cursor-back If 't' (the default), then the cursor moves backwards when exiting Insert state. If 'nil', then the cursor does not move. -- Variable: evil-want-fine-undo If 't', then a change-based action like 'cw' may be undone in several steps. If 'nil' (the default), then it is undone in one step. -- Variable: evil-regexp-search If 't' (the default), then '/' and '?' use regular expressions for searching. If 'nil', they use plain text. -- Variable: evil-search-wrap If 't' (the default), then '/' and '?' wrap the search around the buffer. If 'nil', then they stop at buffer boundaries. -- Variable: evil-flash-delay The number of seconds to flash search matches when pressing 'n' and 'N'. -- Variable: evil-want-C-i-jump If 't' (the default), then 'C-i' jumps forwards in the jump list. If 'nil', then 'C-i' inserts a tab. -- Variable: evil-want-C-u-scroll If 't', then 'C-u' scrolls the buffer. If 'nil' (the default), then 'C-u' begins a numeric prefix argument. * Menu: * The cursor:: * The initial state:: ---------- Footnotes ---------- (1) Strictly speaking, the order only matters if the variable affects the way Evil is loaded. This is the case with some of the 'evil-want-' variables.  File: evil.info, Node: The cursor, Next: The initial state, Up: Settings 2.1 The cursor ============== A state may change the cursor's appearance. The cursor settings are stored in the variables below, which may contain a cursor type as per the 'cursor-type' variable, a color string as passed to the 'set-cursor-color' function, a zero-argument function for changing the cursor, or a list of the above. For example, the following changes the cursor in Replace state to a red box: (setq evil-replace-state-cursor '("red" box)) If the state does not specify a cursor, 'evil-default-cursor' is used. -- Variable: evil-default-cursor The default cursor. -- Variable: evil-normal-state-cursor The cursor for Normal state. -- Variable: evil-insert-state-cursor The cursor for Insert state. -- Variable: evil-visual-state-cursor The cursor for Visual state. -- Variable: evil-replace-state-cursor The cursor for Replace state. -- Variable: evil-operator-state-cursor The cursor for Operator-Pending state. -- Variable: evil-motion-state-cursor The cursor for Motion state. -- Variable: evil-emacs-state-cursor The cursor for Emacs state.  File: evil.info, Node: The initial state, Prev: The cursor, Up: Settings 2.2 The initial state ===================== By default, a new buffer comes up in Normal state. This can be changed with the function 'evil-set-initial-state'. -- Function: evil-set-initial-state mode state Set the initial state for a buffer in which MODE is active to STATE. MODE should be a major mode such as 'text-mode', although minor modes work as well.  File: evil.info, Node: Keymaps, Next: Hooks, Prev: Settings, Up: Top 3 Keymaps ********* Evil's key bindings are stored in a number of keymaps. Each state has a "global keymap", where the default key bindings for the state are stored. For example, the global keymap for Normal state is 'evil-normal-state-map', and the key bindings in this map are seen in all buffers that are currently in Normal state. Keymaps are modified with the Emacs function 'define-key': (define-key evil-normal-state-map "w" 'foo) This binds the key 'w' to the command 'foo' in Normal state. The file 'evil-maps.el' contains all the key bindings. -- Variable: evil-normal-state-map The global keymap for Normal state. -- Variable: evil-insert-state-map The global keymap for Insert state. -- Variable: evil-visual-state-map The global keymap for Visual state. -- Variable: evil-replace-state-map The global keymap for Replace state. -- Variable: evil-operator-state-map The global keymap for Operator-Pending state. -- Variable: evil-motion-state-map The global keymap for Motion state. Each state also has a "buffer-local keymap", which is specific to the current buffer and has precedence over the global keymap. These maps may be changed from a mode hook. -- Variable: evil-normal-state-local-map Buffer-local keymap for Normal state. -- Variable: evil-insert-state-local-map Buffer-local keymap for Insert state. -- Variable: evil-visual-state-local-map Buffer-local keymap for Visual state. -- Variable: evil-replace-state-local-map Buffer-local keymap for Replace state. -- Variable: evil-operator-state-local-map Buffer-local keymap for Operator-Pending state. -- Variable: evil-motion-state-local-map Buffer-local keymap for Motion state. * Menu: * evil-define-key::  File: evil.info, Node: evil-define-key, Up: Keymaps 3.1 'evil-define-key' ===================== Finally, Evil provides the function 'evil-define-key' for adding state bindings to a regular keymap. -- Function: evil-define-key state keymap key def In KEYMAP, create a binding from KEY to DEF in STATE. STATE is one of 'normal', 'insert', 'visual', 'replace', 'operator' and 'motion'. The other parameters are like those of 'define-key'. 'evil-define-key' can be used to augment existing modes with state bindings, as well as create packages for custom bindings. For example, the following will create a minor mode 'foo-mode' with Normal state bindings for the keys 'w' and 'e': (define-minor-mode foo-mode "Foo mode." :keymap (make-sparse-keymap)) (evil-define-key 'normal foo-mode-map "w" 'bar) (evil-define-key 'normal foo-mode-map "e" 'baz) This minor mode can then be enabled in any buffers where the custom bindings are desired: (add-hook 'text-mode-hook 'foo-mode) ; enable alongside 'text-mode' If the minor mode is put into its own file 'foo.el' with a '(provide 'foo)' statement, it becomes an Emacs package.  File: evil.info, Node: Hooks, Next: Macros, Prev: Keymaps, Up: Top 4 Hooks ******* A "hook" is a list of functions to execute. Hooks are modified with the Emacs function 'add-hook'. Evil provides entry and exit hooks for all of its states. -- Variable: evil-normal-state-entry-hook Run when entering Normal state. -- Variable: evil-normal-state-exit-hook Run when exiting Normal state. -- Variable: evil-insert-state-entry-hook Run when entering Insert state. -- Variable: evil-insert-state-exit-hook Run when exiting Insert state. -- Variable: evil-visual-state-entry-hook Run when entering Visual state. -- Variable: evil-visual-state-exit-hook Run when exiting Visual state. -- Variable: evil-replace-state-entry-hook Run when entering Replace state. -- Variable: evil-replace-state-exit-hook Run when exiting Replace state. -- Variable: evil-operator-state-entry-hook Run when entering Operator-Pending state. -- Variable: evil-operator-state-exit-hook Run when exiting Operator-Pending state. -- Variable: evil-motion-state-entry-hook Run when entering Motion state. -- Variable: evil-motion-state-exit-hook Run when exiting Motion state. When these hooks are run, the variables 'evil-next-state' and 'evil-previous-state' hold information about the states being switched to and from. -- Variable: evil-next-state The state being switched to. -- Variable: evil-previous-state The state being switched from.  File: evil.info, Node: Macros, Next: Other internals, Prev: Hooks, Up: Top 5 Macros ******** Evil is implemented in terms of reusable macros. Package writers can use these to define new commands. * Menu: * Motions:: * Operators:: * Text objects:: * Types:: * States::  File: evil.info, Node: Motions, Next: Operators, Up: Macros 5.1 Motions =========== A "motion" is a command which moves the cursor, such as 'w' and 'e'. Motions are defined with the macro 'evil-define-motion'. Motions not defined in this way should be declared with 'evil-declare-motion'. -- Function: evil-declare-motion command Declare COMMAND to be a motion. This ensures that it works properly in Visual state. -- Macro: evil-define-motion motion (count args...) doc keyword-args... body... Define a movement command MOTION. A motion can have any number of arguments, but the first argument, if any, has a predefined meaning as the COUNT. It is a positive or negative number, or 'nil'. The argument list is followed by the documentation string DOC, which is followed by optional keyword arguments: ':type TYPE' The TYPE determines how the motion works after an operator. If TYPE is 'inclusive', then the ending position is included in the motion range. If TYPE is 'line', then the range is expanded to linewise positions. If TYPE is 'block', then the range is blockwise. The default is 'exclusive', which means that the range is used as-is. ':jump JUMP' If JUMP is 't', then the previous position is stored in the jump list so it can be restored with 'C-o'. The default is 'nil'. The keyword arguments are followed by the BODY, which is where the motion's behavior is defined. For instance: (evil-define-motion foo-forward (count) "Move to the right by COUNT characters." :type inclusive (forward-char (or count 1))) For more examples, you can view the source code for any command with 'C-h k'. For instance, 'evil-goto-line' may be viewed by typing 'C-h k G' and following the file link.  File: evil.info, Node: Operators, Next: Text objects, Prev: Motions, Up: Macros 5.2 Operators ============= An "operator" is a command which acts on the text moved over by a motion, such as 'c', 'd' and 'y'. Operators are defined with the macro 'evil-define-operator'. -- Macro: evil-define-operator operator (beg end type args...) doc keyword-args... body... Define an operator command OPERATOR. An operator must have at least two or three arguments, which have predefined meanings. BEG is the beginning position, END is the ending position, and TYPE, if given, is the type of the motion range. The argument list is followed by the documentation string DOC, which is followed by optional keyword arguments: ':type TYPE' Make the input range be a certain TYPE. For example, an operator which only works with whole lines may set TYPE to 'line'. ':motion MOTION' Use the motion MOTION instead of reading one from the keyboard. This does not affect the behavior in Visual state, where the selection boundaries are used instead. ':repeat REPEAT' If REPEAT is 't' (the default), then '.' will repeat the operator. If REPEAT is 'nil', then the operator will not be repeated. ':move-point MOVE-POINT' If MOVE-POINT is 't' (the default), then the cursor is positioned at the beginning of the range. If MOVE-POINT is 'nil', then the original position is preserved. ':keep-visual KEEP-VISUAL' If KEEP-VISUAL is 't', then the selection is not disabled when the operator is run in Visual state; it is up to the operator to do this. The default is 'nil', which means that Visual state is exited automatically. The keyword arguments are followed by the BODY, which is where the operator's actions on BEG and END are defined. For example, 'evil-rot13', which is bound to 'g?' and performs ROT13 encryption on the text, may be defined as: (evil-define-operator evil-rot13 (beg end) "ROT13 encrypt text." (rot13-region beg end)) Pressing 'g?w' will encrypt a word by calling 'rot13-region' on the text moved over by the 'w' motion.  File: evil.info, Node: Text objects, Next: Types, Prev: Operators, Up: Macros 5.3 Text objects ================ A "text object" is a special kind of motion which sets a beginning position as well as an ending position, such as 'iw' and 'a('. In Visual state, text objects alter both ends of the selection. Text objects are defined with the macro 'evil-define-text-object'. -- Macro: evil-define-text-object object (count args...) doc keyword-args... body... Define a text object OBJECT. The first argument has a predefined meaning as the COUNT: it is a positive or negative number. The argument list is followed by the documentation string DOC, which is followed by optional keyword arguments: ':type TYPE' Use the type TYPE after an operator. In Visual state, this is the type of the selection. ':extend-selection EXTEND-SELECTION' If EXTEND-SELECTION is 't' (the default), then the text object always enlarges the current selection. If 'nil', then the object replaces the selection. The keyword arguments are followed by the BODY, which should evaluate to a list '(BEG END)' of two positions in the buffer. For example, a text object which selects three characters following the current position could be defined as: (evil-define-text-object foo (count) "Select three characters." (list (point) (+ (point) 3))) Evil provides several functions which return a list of positions, for use in the definition of a text object. These functions follow the rule that a positive COUNT selects text after the current position, while a negative COUNT selects text before it. -- Function: evil-inner-object-range count forward backward Return a text range '(BEG END)' of COUNT "inner" text objects (e.g., 'iw', 'is'). FORWARD is a function which moves to the end of an object, and BACKWARD is a function which moves to the beginning. -- Function: evil-an-object-range count forward backward Return a text range '(BEG END)' of COUNT text objects with whitespace (e.g., 'aw', 'as'). FORWARD is a function which moves to the end of an object, and BACKWARD is a function which moves to the beginning. -- Function: evil-paren-range count open close &optional exclusive Return a text range '(BEG END)' of COUNT delimited blocks (e.g., 'i(', 'a('). OPEN and CLOSE are characters. If EXCLUSIVE is non-nil, then the delimiters are excluded from the range. This function uses Emacs' syntax table and is only applicable for single-character delimiters; use 'evil-regexp-range' to match multiple characters. -- Function: evil-regexp-range count open close &optional exclusive Return a text range '(BEG END)' of COUNT delimited blocks (e.g., 'it', 'at'). OPEN and CLOSE are regular expressions. If EXCLUSIVE is non-nil, then the delimiters are excluded from the range.  File: evil.info, Node: Types, Next: States, Prev: Text objects, Up: Macros 5.4 Types ========= A "type" is a transformation on a pair of buffer positions. Evil defines the types 'exclusive', 'inclusive', 'line' and 'block', which are used for motion ranges and Visual selection. Types are defined with the macro 'evil-define-type'. -- Macro: evil-define-type type doc keyword-args... Define a type TYPE, described by the documentation string DOC. Then follows keyword arguments: ':expand EXPAND' A function which takes two buffer positions and returns a list '(BEG END)' of expanded positions. ':contract CONTRACT' A function which takes two expanded buffer positions and returns a list '(BEG END)' of unexpanded positions. Optional. ':normalize NORMALIZE' A function which takes two unexpanded buffer positions and returns a list '(BEG END)' of adjusted positions. Optional. ':injective INJECTIVE' If 't' (the default), then expansion is one-to-one - i.e., EXPAND followed by CONTRACT always returns the original positions. If 'nil', then several positions may expand to the same (for example, the 'line' type is one-to-many as it expands to the containing lines). Further keywords and functions may be specified. These are understood to be transformations on buffer positions, like EXPAND and CONTRACT.  File: evil.info, Node: States, Prev: Types, Up: Macros 5.5 States ========== States are defined with the macro 'evil-define-state'. The macro defines the necessary hooks, keymaps and variables for a state, as well as a toggle function 'evil-STATE-state' for entering the state, and a predicate function 'evil-STATE-state-p' which returns 't' when the state is active, and 'nil' otherwise. -- Macro: evil-define-state state doc keyword-args... body... Define an Evil state STATE, described by the documentation string DOC. Then follows optional keyword arguments: ':tag TAG' Mode line indicitor, e.g., '""'. ':message MESSAGE' String shown in the echo area. ':cursor CURSOR' Cursor specification. ':enable ENABLE' List of other modes and states to enable. A state may enable another state's keymaps in addition to its own. This is followed the BODY, which is executed whenever the state is enabled or disabled. The state's predicate function may be used to distinguish between the two.  File: evil.info, Node: Other internals, Next: GNU Free Documentation License, Prev: Macros, Up: Top 6 Other internals ***************** * Menu: * Command properties::  File: evil.info, Node: Command properties, Up: Other internals 6.1 Command properties ====================== Evil defines "command properties" to store information about commands, such as whether they should be repeated. A command property is a ':KEYWORD' with an associated value, e.g., ':repeat nil'. -- Function: evil-add-command-properties command &rest properties Add PROPERTIES to COMMAND. The properties should be specified as a list of keywords and values: (evil-add-command-properties 'my-command :repeat t) -- Function: evil-set-command-properties command &rest properties Like 'evil-add-command-properties', but resets all previous properties. -- Function: evil-get-command-property command property Return the value of a command property. -- Macro: evil-define-command command (args...) doc keyword-args... body... Define a command with command properties KEYWORD-ARGS. For setting repeat properties, Evil provides the following functions: -- Function: evil-declare-repeat command Declare COMMAND to be repeatable. -- Function: evil-declare-not-repeat command Declare COMMAND to be nonrepeatable. -- Function: evil-declare-change-repeat command Declare COMMAND to be repeatable by buffer changes rather than keystrokes.  File: evil.info, Node: GNU Free Documentation License, Prev: Other internals, Up: Top Appendix A GNU Free Documentation License ***************************************** Version 1.3, 3 November 2008 Copyright © 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc. Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. 0. 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ADDENDUM: How to use this License for your documents ==================================================== To use this License in a document you have written, include a copy of the License in the document and put the following copyright and license notices just after the title page: Copyright (C) YEAR YOUR NAME. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. A copy of the license is included in the section entitled ``GNU Free Documentation License''. If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts, replace the "with...Texts." line with this: with the Invariant Sections being LIST THEIR TITLES, with the Front-Cover Texts being LIST, and with the Back-Cover Texts being LIST. If you have Invariant Sections without Cover Texts, or some other combination of the three, merge those two alternatives to suit the situation. If your document contains nontrivial examples of program code, we recommend releasing these examples in parallel under your choice of free software license, such as the GNU General Public License, to permit their use in free software.  Tag Table: Node: Top819 Node: Overview1092 Ref: Overview-Footnote-11440 Node: Installation1668 Ref: Installation-Footnote-12272 Node: Modes and states2322 Node: Settings3375 Ref: Settings-Footnote-15826 Node: The cursor5983 Node: The initial state7188 Node: Keymaps7647 Node: evil-define-key9509 Node: Hooks10693 Node: Macros12215 Node: Motions12495 Node: Operators14432 Node: Text objects16765 Node: Types19778 Node: States21260 Node: Other internals22359 Node: Command properties22536 Node: GNU Free Documentation License23863  End Tag Table  Local Variables: coding: iso-8859-1 End: