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which-key.el
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;;; which-key.el --- Display available keybindings in popup -*- lexical-binding: t; -*-
;; Copyright (C) 2017-2021 Free Software Foundation, Inc.
;; Author: Justin Burkett <justin@burkett.cc>
;; Maintainer: Justin Burkett <justin@burkett.cc>
;; URL: https://github.com/justbur/emacs-which-key
;; Version: 3.6.0
;; Keywords:
;; Package-Requires: ((emacs "24.4"))
;; This program 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 3 of the License, or
;; (at your option) any later version.
;; This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; which-key provides the minor mode which-key-mode for Emacs. The mode displays
;; the key bindings following your currently entered incomplete command (a
;; prefix) in a popup. For example, after enabling the minor mode if you enter
;; C-x and wait for the default of 1 second the minibuffer will expand with all
;; of the available key bindings that follow C-x (or as many as space allows
;; given your settings). This includes prefixes like C-x 8 which are shown in a
;; different face. Screenshots of what the popup will look like along with
;; information about additional features can be found at
;; https://github.com/justbur/emacs-which-key.
;;
;;; Code:
(require 'cl-lib)
(require 'button)
(require 'regexp-opt)
;; For compiler
(defvar evil-operator-shortcut-map)
(defvar evil-operator-state-map)
(defvar evil-motion-state-map)
(defvar golden-ratio-mode)
(declare-function evil-get-command-property "ext:evil-common.el")
;;; Options
(defgroup which-key nil
"Customization options for which-key-mode"
:group 'help
:prefix "which-key-")
(defcustom which-key-idle-delay 1.0
"Delay (in seconds) for which-key buffer to popup.
This variable should be set before activating `which-key-mode'.
A value of zero might lead to issues, so a non-zero value is
recommended
(see https://github.com/justbur/emacs-which-key/issues/134)."
:group 'which-key
:type 'float)
(defcustom which-key-idle-secondary-delay nil
"Once the which-key buffer shows once for a key sequence reduce
the idle time to this amount (in seconds). This makes it possible
to shorten the delay for subsequent popups in the same key
sequence. The default is for this value to be nil, which disables
this behavior."
:group 'which-key
:type '(choice float (const :tag "Disabled" nil)))
(defcustom which-key-echo-keystrokes (if (and echo-keystrokes
(> (+ echo-keystrokes 0.01)
which-key-idle-delay))
(/ (float which-key-idle-delay) 4)
echo-keystrokes)
"Value to use for `echo-keystrokes'.
This only applies if `which-key-popup-type' is minibuffer or
`which-key-show-prefix' is echo. It needs to be less than
`which-key-idle-delay' or else the keystroke echo will erase the
which-key popup."
:group 'which-key
:type 'float)
(defcustom which-key-max-description-length 27
"Truncate the description of keys to this length.
Either nil (no truncation), an integer (truncate after that many
characters), a float (use that fraction of the available width),
or a function, which takes one argument, the available width in
characters, and whose return value has one of the types mentioned
before. Truncation is done using `which-key-ellipsis'."
:group 'which-key
:type '(choice (const :tag "Disable truncation" nil)
(integer :tag "Width in characters")
(float :tag "Use fraction of available width")
function))
(defcustom which-key-min-column-description-width 0
"Every column should at least have this width."
:group 'which-key
:type 'integer)
(defcustom which-key-add-column-padding 0
"Additional padding (number of spaces) to add to the left of
each key column."
:group 'which-key
:type 'integer)
(defcustom which-key-unicode-correction 3
"Correction for wide unicode characters.
Since we measure width in terms of the number of characters,
Unicode characters that are wider than ASCII characters throw off
the calculation for available width in the which-key buffer. This
variable allows you to adjust for the wide unicode characters by
artificially reducing the available width in the buffer.
The default of 3 means allow for the total extra width
contributed by any wide unicode characters to be up to one
additional ASCII character in the which-key buffer. Increase this
number if you are seeing characters get cutoff on the right side
of the which-key popup."
:group 'which-key
:type 'integer)
(defcustom which-key-dont-use-unicode nil
"If non-nil, don't use any unicode characters in default setup."
:group 'which-key
:type 'boolean)
(defcustom which-key-separator
(if which-key-dont-use-unicode " : " " → ")
"Separator to use between key and description. Default is \" →
\", unless `which-key-dont-use-unicode' is non nil, in which case
the default is \" : \"."
:group 'which-key
:type 'string)
(defcustom which-key-ellipsis
(if which-key-dont-use-unicode ".." "…")
"Ellipsis to use when truncating.
Default is \"…\", unless `which-key-dont-use-unicode' is non nil,
in which case the default is \"..\". This can also be the empty
string to truncate without using any ellipsis."
:group 'which-key
:type 'string)
(defcustom which-key-prefix-prefix "+"
"String to insert in front of prefix commands (i.e., commands
that represent a sub-map). Default is \"+\"."
:group 'which-key
:type 'string)
(defcustom which-key-compute-remaps nil
"If non-nil, show remapped command if a command has been
remapped given the currently active keymaps."
:group 'which-key
:type 'boolean)
(defcustom which-key-replacement-alist
(delq nil
`(((nil . "which-key-show-next-page-no-cycle") . (nil . "wk next pg"))
,@(unless which-key-dont-use-unicode
'((("<left>") . ("←"))
(("<right>") . ("→"))))
(("<\\([[:alnum:]-]+\\)>") . ("\\1"))))
"Association list to determine how to manipulate descriptions
of key bindings in the which-key popup. Each element of the list
is a nested cons cell with the format
\(MATCH CONS . REPLACEMENT\).
The MATCH CONS determines when a replacement should occur and
REPLACEMENT determines how the replacement should occur. Each may
have the format \(KEY REGEXP . BINDING REGEXP\). For the
replacement to apply the key binding must match both the KEY
REGEXP and the BINDING REGEXP. A value of nil in either position
can be used to match every possibility. The replacement is
performed by using `replace-regexp-in-string' on the KEY REGEXP
from the MATCH CONS and REPLACEMENT when it is a cons cell, and
then similarly for the BINDING REGEXP. A nil value in the BINDING
REGEXP position cancels the replacement. For example, the entry
\(\(nil . \"Prefix Command\"\) . \(nil . \"prefix\"\)\)
matches any binding with the descriptions \"Prefix Command\" and
replaces the description with \"prefix\", ignoring the
corresponding key.
REPLACEMENT may also be a function taking a cons cell
\(KEY . BINDING\) and producing a new corresponding cons cell.
If REPLACEMENT is anything other than a cons cell \(and non nil\)
the key binding is ignored by which-key.
Finally, you can multiple replacements to occur for a given key
binding by setting `which-key-allow-multiple-replacements' to a
non-nil value."
:group 'which-key
:type '(alist :key-type (cons (choice regexp (const nil))
(choice regexp (const nil)))
:value-type (cons (choice string (const nil))
(choice string (const nil)))))
(defcustom which-key-allow-multiple-replacements nil
"Allow a key binding to match and be modified by multiple
elements in `which-key-replacement-alist' if non-nil. When nil,
only the first match is used to perform replacements from
`which-key-replacement-alist'."
:group 'which-key
:type 'boolean)
(defcustom which-key-show-docstrings nil
"If non-nil, show each command's docstring next to the command
in the which-key buffer. This will only display the docstring up
to the first line break. If you set this variable to the symbol
docstring-only, then the command's name with be omitted. You
probably also want to adjust `which-key-max-description-length'
at the same time if you use this feature."
:group 'which-key
:type '(radio
(const :tag "Do not show docstrings" nil)
(const :tag "Add docstring to command names" t)
(const :tag "Replace command name with docstring" docstring-only)))
(defcustom which-key-highlighted-command-list '()
"A list of strings and/or cons cells used to highlight certain
commands. If the element is a string, assume it is a regexp
pattern for matching command names and use
`which-key-highlighted-command-face' for any matching names. If
the element is a cons cell, it should take the form (regexp .
face to apply)."
:group 'which-key
:type '(repeat (choice string (cons regexp face))))
(defcustom which-key-special-keys '()
"These keys will automatically be truncated to one character
and have `which-key-special-key-face' applied to them. This is
disabled by default. Try this to see the effect.
\(setq which-key-special-keys \\='(\"SPC\" \"TAB\" \"RET\" \"ESC\" \"DEL\")\)"
:group 'which-key
:type '(repeat string))
(defcustom which-key-buffer-name " *which-key*"
"Name of which-key buffer."
:group 'which-key
:type 'string)
(defcustom which-key-show-prefix 'echo
"Whether to and where to display the current prefix sequence
Possible choices are echo for echo area (the default), left, top
and nil. Nil turns the feature off."
:group 'which-key
:type '(radio (const :tag "Left of the keys" left)
(const :tag "In the first line" top)
(const :tag "In the last line" bottom)
(const :tag "In the echo area" echo)
(const :tag "In the mode-line" mode-line)
(const :tag "Hide" nil)))
(defcustom which-key-popup-type 'side-window
"Supported types are minibuffer, side-window, frame, and custom"
:group 'which-key
:type '(radio (const :tag "Show in minibuffer" minibuffer)
(const :tag "Show in side window" side-window)
(const :tag "Show in popup frame" frame)
(const :tag "Use your custom display functions" custom)))
(defcustom which-key-min-display-lines 1
"Minimum number of horizontal lines to display in the which-key buffer"
:group 'which-key
:type 'integer)
(defcustom which-key-max-display-columns nil
"Maximum number of columns to display in the which-key buffer
nil means don't impose a maximum."
:group 'which-key
:type '(choice integer (const :tag "Unbounded" nil)))
(defcustom which-key-side-window-location 'bottom
"Location of which-key popup when `which-key-popup-type' is side-window.
Should be one of top, bottom, left or right. You can also specify
a list of two locations, like (right bottom). In this case, the
first location is tried. If there is not enough room, the second
location is tried."
:group 'which-key
:type '(radio (const right)
(const bottom)
(const left)
(const top)
(const (right bottom))
(const (bottom right))))
(defcustom which-key-side-window-slot 0
"The `slot' to use for `display-buffer-in-side-window' when
`which-key-popup-type' is `side-window'. Quoting from the
docstring of `display-buffer-in-side-window',
`slot' if non-nil, specifies the window slot where to display
BUFFER. A value of zero or nil means use the middle slot on the
specified side. A negative value means use a slot
preceding (that is, above or on the left of) the middle slot. A
positive value means use a slot following (that is, below or on
the right of) the middle slot. The default is zero."
:group 'which-key
:type 'integer)
(defcustom which-key-side-window-max-width 0.333
"Maximum width of which-key popup when type is side-window
This variable can also be a number between 0 and 1. In that case,
it denotes a percentage out of the frame's width."
:group 'which-key
:type 'float)
(defcustom which-key-side-window-max-height 0.25
"Maximum height of which-key popup when type is side-window
This variable can also be a number between 0 and 1. In that case, it denotes
a percentage out of the frame's height."
:group 'which-key
:type 'float)
(defcustom which-key-frame-max-width 60
"Maximum width of which-key popup when type is frame."
:group 'which-key
:type 'integer)
(defcustom which-key-frame-max-height 20
"Maximum height of which-key popup when type is frame."
:group 'which-key
:type 'integer)
(defcustom which-key-allow-imprecise-window-fit (not (display-graphic-p))
"If non-nil allow which-key to use a less intensive method of
fitting the popup window to the buffer. If you are noticing lag
when the which-key popup displays turning this on may help.
See https://github.com/justbur/emacs-which-key/issues/130
and https://github.com/justbur/emacs-which-key/issues/225."
:group 'which-key
:type 'boolean)
(defcustom which-key-show-remaining-keys nil
"Show remaining keys in last slot, when keys are hidden."
:group 'which-key
:type '(radio (const :tag "Yes" t)
(const :tag "No" nil)))
(defcustom which-key-sort-order 'which-key-key-order
"If nil, do not resort the output from
`describe-buffer-bindings' which groups by mode. Ordering options
are
1. `which-key-key-order': by key (default)
2. `which-key-key-order-alpha': by key using alphabetical order
3. `which-key-description-order': by description
4. `which-key-prefix-then-key-order': prefix (no prefix first) then key
5. `which-key-local-then-key-order': local binding then key
See the README and the docstrings for those functions for more
information."
:group 'which-key
:type '(choice (function-item which-key-key-order)
(function-item which-key-key-order-alpha)
(function-item which-key-description-order)
(function-item which-key-prefix-then-key-order)
(function-item which-key-local-then-key-order)))
(defcustom which-key-sort-uppercase-first t
"If non-nil, uppercase comes before lowercase in sorting
function chosen in `which-key-sort-order'. Otherwise, the order
is reversed."
:group 'which-key
:type 'boolean)
(defcustom which-key-paging-prefixes '()
"Enable paging for these prefixes."
:group 'which-key
:type '(repeat string))
(defcustom which-key-paging-key "<f5>"
"Key to use for changing pages. Bound after each of the
prefixes in `which-key-paging-prefixes'"
:group 'which-key
:type 'string)
;; (defcustom which-key-undo-key nil
;; "Key (string) to use for undoing keypresses. Bound recursively
;; in each of the maps in `which-key-undo-keymaps'."
;; :group 'which-key
;; :type 'string)
;; (defcustom which-key-undo-keymaps '()
;; "Keymaps in which to bind `which-key-undo-key'"
;; :group 'which-key
;; :type '(repeat symbol))
(defcustom which-key-use-C-h-commands t
"Use C-h (or whatever `help-char' is set to) for paging if
non-nil. Normally C-h after a prefix calls
`describe-prefix-bindings'. This changes that command to a
which-key paging command when which-key-mode is active."
:group 'which-key
:type 'boolean)
(defcustom which-key-show-early-on-C-h nil
"Show the which-key buffer before if C-h (or whatever
`help-char' is set to) is pressed in the middle of a prefix
before the which-key buffer would normally be triggered through
the idle delay. If combined with the following settings,
which-key will effectively only show when triggered \"manually\"
using C-h.
\(setq `which-key-idle-delay' 10000)
\(setq `which-key-idle-secondary-delay' 0.05)
Note that `which-key-idle-delay' should be set before turning on
`which-key-mode'. "
:group 'which-key
:type 'boolean)
(defcustom which-key-is-verbose nil
"Whether to warn about potential mistakes in configuration."
:group 'which-key
:type 'boolean)
(defcustom which-key-preserve-window-configuration nil
"If non-nil, save window configuration before which-key buffer is shown
and restore it after which-key buffer is hidden. It prevents which-key from
changing window position of visible buffers.
Only takken into account when popup type is side-window."
:group
'which-key
:type 'boolean)
(defvar which-key-C-h-map-prompt
(concat " \\<which-key-C-h-map>"
" \\[which-key-show-next-page-cycle]"
which-key-separator "next-page,"
" \\[which-key-show-previous-page-cycle]"
which-key-separator "previous-page,"
" \\[which-key-undo-key]"
which-key-separator "undo-key,"
" \\[which-key-toggle-docstrings]"
which-key-separator "toggle-docstrings,"
" \\[which-key-show-standard-help]"
which-key-separator "help,"
" \\[which-key-abort]"
which-key-separator "abort"
" 1..9"
which-key-separator "digit-arg")
"Prompt to display when invoking `which-key-C-h-map'. This string
is fed into `substitute-command-keys'")
(defvar which-key-C-h-map
(let ((map (make-sparse-keymap)))
(dolist (bind `(("\C-a" . which-key-abort)
("a" . which-key-abort)
("\C-d" . which-key-toggle-docstrings)
("d" . which-key-toggle-docstrings)
(,(vector help-char) . which-key-show-standard-help)
("h" . which-key-show-standard-help)
("\C-n" . which-key-show-next-page-cycle)
("n" . which-key-show-next-page-cycle)
("\C-p" . which-key-show-previous-page-cycle)
("p" . which-key-show-previous-page-cycle)
("\C-u" . which-key-undo-key)
("u" . which-key-undo-key)
("1" . which-key-digit-argument)
("2" . which-key-digit-argument)
("3" . which-key-digit-argument)
("4" . which-key-digit-argument)
("5" . which-key-digit-argument)
("6" . which-key-digit-argument)
("7" . which-key-digit-argument)
("8" . which-key-digit-argument)
("9" . which-key-digit-argument)))
(define-key map (car bind) (cdr bind)))
map)
"Keymap for C-h commands.")
(defvar which-key--paging-functions '(which-key-C-h-dispatch
which-key-manual-update
which-key-turn-page
which-key-show-next-page-cycle
which-key-show-next-page-no-cycle
which-key-show-previous-page-cycle
which-key-show-previous-page-no-cycle
which-key-undo-key
which-key-undo))
(defvar which-key-persistent-popup nil
"Whether or not to disable `which-key--hide-popup'.")
(defcustom which-key-hide-alt-key-translations t
"Hide key translations using Alt key if non nil.
These translations are not relevant most of the times since a lot
of terminals issue META modifier for the Alt key.
See http://www.gnu.org/software/emacs/manual/html_node/emacs/Modifier-Keys.html"
:group 'which-key
:type 'boolean)
(defcustom which-key-delay-functions nil
"A list of functions that may decide whether to delay the
which-key popup based on the current incomplete key
sequence. Each function in the list is run with two arguments,
the current key sequence as produced by `key-description' and the
length of the key sequence. If the popup should be delayed based
on that key sequence, the function should return the delay time
in seconds. Returning nil means no delay. The first function in
this list to return a value is the value that is used.
The delay time is effectively added to the normal
`which-key-idle-delay'."
:group 'which-key
:type '(repeat function))
(defcustom which-key-allow-regexps nil
"A list of regexp strings to use to filter key sequences.
When non-nil, for a key sequence to trigger the which-key popup
it must match one of the regexps in this list. The format of the
key sequences is what is produced by `key-description'."
:group 'which-key
:type '(repeat regexp))
(defcustom which-key-inhibit-regexps nil
"Similar to `which-key-allow-regexps', a list of regexp strings
to use to filter key sequences. When non-nil, for a key sequence
to trigger the which-key popup it cannot match one of the regexps
in this list. The format of the key sequences is what is produced
by `key-description'."
:group 'which-key
:type '(repeat regexp))
(defcustom which-key-show-transient-maps nil
"Show keymaps created by `set-transient-map' when applicable.
More specifically, detect when `overriding-terminal-local-map' is
set (this is the keymap used by `set-transient-map') and display
it."
:group 'which-key
:type 'boolean)
(make-obsolete-variable
'which-key-enable-extended-define-key
"which-key-enable-extended-define-key is obsolete and has no effect."
"2021-06-21")
;; Hooks
(defcustom which-key-init-buffer-hook '()
"Hook run when which-key buffer is initialized."
:group 'which-key
:type 'hook)
;;;; Faces
(defgroup which-key-faces nil
"Faces for which-key-mode"
:group 'which-key
:prefix "which-key-")
(defface which-key-key-face
'((t . (:inherit font-lock-constant-face)))
"Face for which-key keys"
:group 'which-key-faces)
(defface which-key-separator-face
'((t . (:inherit font-lock-comment-face)))
"Face for the separator (default separator is an arrow)"
:group 'which-key-faces)
(defface which-key-note-face
'((t . (:inherit which-key-separator-face)))
"Face for notes or hints occasionally provided"
:group 'which-key-faces)
(defface which-key-command-description-face
'((t . (:inherit font-lock-function-name-face)))
"Face for the key description when it is a command"
:group 'which-key-faces)
(defface which-key-local-map-description-face
'((t . (:inherit which-key-command-description-face)))
"Face for the key description when it is found in `current-local-map'"
:group 'which-key-faces)
(defface which-key-highlighted-command-face
'((t . (:inherit which-key-command-description-face :underline t)))
"Default face for the command description when it is a command
and it matches a string in `which-key-highlighted-command-list'."
:group 'which-key-faces)
(defface which-key-group-description-face
'((t . (:inherit font-lock-keyword-face)))
"Face for the key description when it is a group or prefix"
:group 'which-key-faces)
(defface which-key-special-key-face
'((t . (:inherit which-key-key-face :inverse-video t :weight bold)))
"Face for special keys (SPC, TAB, RET)"
:group 'which-key-faces)
(defface which-key-docstring-face
'((t . (:inherit which-key-note-face)))
"Face for docstrings"
:group 'which-key-faces)
;;;; Custom popup
(defcustom which-key-custom-popup-max-dimensions-function nil
"Variable to hold a custom max-dimensions function.
Will be passed the width of the active window and is expected to
return the maximum height in lines and width in characters of the
which-key popup in the form a cons cell (height . width)."
:group 'which-key
:type '(choice function (const nil)))
(defcustom which-key-custom-hide-popup-function nil
"Variable to hold a custom hide-popup function.
It takes no arguments and the return value is ignored."
:group 'which-key
:type '(choice function (const nil)))
(defcustom which-key-custom-show-popup-function nil
"Variable to hold a custom show-popup function.
Will be passed the required dimensions in the form (height .
width) in lines and characters respectively. The return value is
ignored."
:group 'which-key
:type '(choice function (const nil)))
(defcustom which-key-lighter " WK"
"Minor mode lighter to use in the mode-line."
:group 'which-key
:type 'string)
(defvar which-key-inhibit nil
"Prevent which-key from popping up momentarily by setting this
to a non-nil value for the execution of a command. Like this
\(let \(\(which-key-inhibit t\)\)
...\)")
(defvar which-key-keymap-history nil
"History of keymap selections in functions like
`which-key-show-keymap'.")
;;; Internal Vars
(defvar which-key--buffer nil
"Internal: Holds reference to which-key buffer.")
(defvar which-key--timer nil
"Internal: Holds reference to open window timer.")
(defvar which-key--secondary-timer-active nil
"Internal: Non-nil if the secondary timer is active.")
(defvar which-key--paging-timer nil
"Internal: Holds reference to timer for paging.")
(defvar which-key--frame nil
"Internal: Holds reference to which-key frame.
Used when `which-key-popup-type' is frame.")
(defvar which-key--scroll-pos-table (make-hash-table :test 'equal)
"Internal: Holds initial scroll positions of windows
in which the which-key popup is showing.")
(defvar which-key--echo-keystrokes-backup nil
"Internal: Backup the initial value of `echo-keystrokes'.")
(defvar which-key--prefix-help-cmd-backup nil
"Internal: Backup the value of `prefix-help-command'.")
(defvar which-key--last-try-2-loc nil
"Internal: Last location of side-window when two locations
used.")
(defvar which-key--automatic-display nil
"Internal: Non-nil if popup was triggered with automatic
update.")
(defvar which-key--debug-buffer-name nil
"If non-nil, use this buffer for debug messages.")
(defvar which-key--multiple-locations nil)
(defvar which-key--inhibit-next-operator-popup nil)
(defvar which-key--prior-show-keymap-args nil)
(defvar which-key--previous-frame-size nil)
(defvar which-key--prefix-title-alist nil)
(defvar which-key--evil-keys-regexp (eval-when-compile
(regexp-opt '("-state"))))
(defvar which-key--ignore-non-evil-keys-regexp
(eval-when-compile
(regexp-opt '("mouse-" "wheel-" "remap" "drag-" "scroll-bar"
"select-window" "switch-frame" "which-key"))))
(defvar which-key--ignore-keys-regexp
(eval-when-compile
(regexp-opt '("mouse-" "wheel-" "remap" "drag-" "scroll-bar"
"select-window" "switch-frame" "-state"
"which-key"))))
(defvar which-key--pages-obj nil)
(cl-defstruct which-key--pages
pages
height
widths
keys/page
page-nums
num-pages
total-keys
prefix
prefix-title)
(defvar which-key--saved-window-configuration nil)
(defun which-key--rotate (list n)
(let* ((len (length list))
(n (if (< n 0) (+ len n) n))
(n (mod n len)))
(append (last list (- len n)) (butlast list (- len n)))))
(defun which-key--pages-set-current-page (pages-obj n)
(setf (which-key--pages-pages pages-obj)
(which-key--rotate (which-key--pages-pages pages-obj) n))
(setf (which-key--pages-widths pages-obj)
(which-key--rotate (which-key--pages-widths pages-obj) n))
(setf (which-key--pages-keys/page pages-obj)
(which-key--rotate (which-key--pages-keys/page pages-obj) n))
(setf (which-key--pages-page-nums pages-obj)
(which-key--rotate (which-key--pages-page-nums pages-obj) n))
pages-obj)
(defsubst which-key--on-first-page ()
(= (which-key--pages-page-nums which-key--pages-obj) 1))
(defsubst which-key--on-last-page ()
(= (which-key--pages-page-nums which-key--pages-obj)
(which-key--pages-num-pages which-key--pages-obj)))
(defsubst which-key--current-prefix ()
(and which-key--pages-obj
(which-key--pages-prefix which-key--pages-obj)))
(defmacro which-key--debug-message (&rest msg)
`(when which-key--debug-buffer-name
(let ((buf (get-buffer-create which-key--debug-buffer-name))
(fmt-msg (format ,@msg)))
(with-current-buffer buf
(goto-char (point-max))
(insert "\n" fmt-msg "\n")))))
(defsubst which-key--safe-lookup-key (keymap key)
"Version of `lookup-key' that allows KEYMAP to be nil.
Also convert numeric results of `lookup-key' to nil. KEY is not
checked."
(when (keymapp keymap)
(let ((result (lookup-key keymap key)))
(when (and result (not (numberp result)))
result))))
(defsubst which-key--safe-lookup-key-description (keymap key)
"Version of `lookup-key' that allows KEYMAP to be nil.
Also convert numeric results of `lookup-key' to nil. KEY
should be formatted as an input for `kbd'."
(let ((key (ignore-errors (kbd key))))
(when (and key (keymapp keymap))
(let ((result (lookup-key keymap key)))
(when (and result (not (numberp result)))
result)))))
;;; Third-party library support
;;;; Evil
(defvar evil-state nil)
(defcustom which-key-allow-evil-operators (boundp 'evil-this-operator)
"Allow popup to show for evil operators.
The popup is normally inhibited in the middle of commands, but
setting this to non-nil will override this behavior for evil
operators."
:group 'which-key
:type 'boolean)
(defcustom which-key-show-operator-state-maps nil
"Experimental: Try to show the right keys following an evil
command that reads a motion, such as \"y\", \"d\" and \"c\" from
normal state. This is experimental, because there might be some
valid keys missing and it might be showing some invalid keys."
:group 'which-key
:type 'boolean)
;;;; God-mode
(defvar which-key--god-mode-support-enabled nil
"Support god-mode if non-nil. This is experimental,
so you need to explicitly opt-in for now. Please report any
problems at github.")
(defvar which-key--god-mode-key-string nil
"Holds key string to use for god-mode support.")
(defun which-key--god-mode-lookup-command-advice (orig-fun arg1 &rest args)
(setq which-key--god-mode-key-string arg1)
(unwind-protect
(apply orig-fun arg1 args)
(when (bound-and-true-p which-key-mode)
(which-key--hide-popup))))
(defun which-key-enable-god-mode-support (&optional disable)
"Enable support for god-mode if non-nil.
This is experimental, so you need to explicitly opt-in for
now. Please report any problems at github. If DISABLE is non-nil
disable support."
(interactive "P")
(setq which-key--god-mode-support-enabled (null disable))
(if disable
(advice-remove 'god-mode-lookup-command
#'which-key--god-mode-lookup-command-advice)
(advice-add 'god-mode-lookup-command :around
#'which-key--god-mode-lookup-command-advice)))
;;; Mode
;;;###autoload
(define-minor-mode which-key-mode
"Toggle which-key-mode."
:global t
:group 'which-key
:lighter which-key-lighter
:keymap (let ((map (make-sparse-keymap)))
(mapc
(lambda (prefix)
(define-key map
(kbd (concat prefix " " which-key-paging-key))
#'which-key-C-h-dispatch))
which-key-paging-prefixes)
map)
(if which-key-mode
(progn
(setq which-key--echo-keystrokes-backup echo-keystrokes)
(when (or (eq which-key-show-prefix 'echo)
(eq which-key-popup-type 'minibuffer))
(which-key--setup-echo-keystrokes))
(unless (member prefix-help-command which-key--paging-functions)
(setq which-key--prefix-help-cmd-backup prefix-help-command))
(when (or which-key-use-C-h-commands
which-key-show-early-on-C-h)
(setq prefix-help-command #'which-key-C-h-dispatch))
(when which-key-show-remaining-keys
(add-hook 'pre-command-hook #'which-key--lighter-restore))
(add-hook 'pre-command-hook #'which-key--hide-popup)
(add-hook 'window-size-change-functions
#'which-key--hide-popup-on-frame-size-change)
(which-key--start-timer))
(setq echo-keystrokes which-key--echo-keystrokes-backup)
(when which-key--prefix-help-cmd-backup
(setq prefix-help-command which-key--prefix-help-cmd-backup))
(when which-key-show-remaining-keys
(remove-hook 'pre-command-hook #'which-key--lighter-restore))
(remove-hook 'pre-command-hook #'which-key--hide-popup)
(remove-hook 'window-size-change-functions
#'which-key--hide-popup-on-frame-size-change)
(which-key--stop-timer)))
(defun which-key--init-buffer ()
"Initialize which-key buffer"
(unless (buffer-live-p which-key--buffer)
(setq which-key--buffer (get-buffer-create which-key-buffer-name))
(with-current-buffer which-key--buffer
;; suppress confusing minibuffer message
(let (message-log-max)
(toggle-truncate-lines 1)
(message ""))
(setq-local cursor-type nil)
(setq-local cursor-in-non-selected-windows nil)
(setq-local mode-line-format nil)
(setq-local header-line-format nil)
(setq-local word-wrap nil)
(setq-local show-trailing-whitespace nil)
(run-hooks 'which-key-init-buffer-hook))))
(defun which-key--setup-echo-keystrokes ()
"Reduce `echo-keystrokes' if necessary (it will interfere if
it's set too high)."
(when (and echo-keystrokes
(> (abs (- echo-keystrokes which-key-echo-keystrokes)) 0.000001))
(if (> which-key-idle-delay which-key-echo-keystrokes)
(setq echo-keystrokes which-key-echo-keystrokes)
(setq which-key-echo-keystrokes (/ (float which-key-idle-delay) 4)
echo-keystrokes which-key-echo-keystrokes))))
(defun which-key-remove-default-unicode-chars ()
"Use of `which-key-dont-use-unicode' is preferred to this
function, but it's included here in case someone cannot set that
variable early enough in their configuration, if they are using a
starter kit for example."
(when (string-equal which-key-separator " → ")
(setq which-key-separator " : ")))
;;; Default configuration functions for use by users.
;;;###autoload
(defun which-key-setup-side-window-right ()
"Apply suggested settings for side-window that opens on right."
(interactive)
(setq which-key-popup-type 'side-window
which-key-side-window-location 'right
which-key-show-prefix 'top))
;;;###autoload
(defun which-key-setup-side-window-right-bottom ()
"Apply suggested settings for side-window that opens on right
if there is space and the bottom otherwise."
(interactive)
(setq which-key-popup-type 'side-window
which-key-side-window-location '(right bottom)
which-key-show-prefix 'top))
;;;###autoload
(defun which-key-setup-side-window-bottom ()
"Apply suggested settings for side-window that opens on bottom."
(interactive)
(which-key--setup-echo-keystrokes)
(setq which-key-popup-type 'side-window
which-key-side-window-location 'bottom
which-key-show-prefix 'echo))
;;;###autoload
(defun which-key-setup-minibuffer ()
"Apply suggested settings for minibuffer.
Do not use this setup if you use the paging commands. Instead use
`which-key-setup-side-window-bottom', which is nearly identical
but more functional."
(interactive)
(which-key--setup-echo-keystrokes)
(setq which-key-popup-type 'minibuffer
which-key-show-prefix 'left))
;;; Helper functions to modify replacement lists.
;;;###autoload
(defun which-key-add-keymap-based-replacements (keymap key replacement &rest more)
"Replace the description of KEY using REPLACEMENT in KEYMAP.
KEY should take a format suitable for use in `kbd'. REPLACEMENT
should be a cons cell of the form \(STRING . COMMAND\) for each
REPLACEMENT, where STRING is the replacement string and COMMAND
is a symbol corresponding to the intended command to be
replaced. COMMAND can be nil if the binding corresponds to a key
prefix. An example is
\(which-key-add-keymap-based-replacements global-map
\"C-x w\" \\='\(\"Save as\" . write-file\)\).
For backwards compatibility, REPLACEMENT can also be a string,
but the above format is preferred, and the option to use a string
for REPLACEMENT will eventually be removed."
(while key
(let ((def
(cond
((consp replacement) replacement)
((stringp replacement)
(cons replacement
(or (which-key--safe-lookup-key-description keymap key)
(make-sparse-keymap))))
(t
(user-error "replacement is neither a cons cell or a string")))))
(define-key keymap (kbd key) def))
(setq key (pop more)
replacement (pop more))))
(put 'which-key-add-keymap-based-replacements 'lisp-indent-function 'defun)
;;;###autoload
(defun which-key-add-key-based-replacements
(key-sequence replacement &rest more)
"Replace the description of KEY-SEQUENCE with REPLACEMENT.
KEY-SEQUENCE is a string suitable for use in `kbd'. REPLACEMENT
may either be a string, as in
\(which-key-add-key-based-replacements \"C-x 1\" \"maximize\"\)
a cons of two strings as in
\(which-key-add-key-based-replacements \"C-x 8\"
\\='(\"unicode\" . \"Unicode keys\")\)
or a function that takes a \(KEY . BINDING\) cons and returns a
replacement.
In the second case, the second string is used to provide a longer
name for the keys under a prefix.
MORE allows you to specifcy additional KEY REPLACEMENT pairs. All
replacements are added to `which-key-replacement-alist'."
;; TODO: Make interactive
(while key-sequence
;; normalize key sequences before adding
(let ((key-seq (key-description (kbd key-sequence)))
(replace (or (and (functionp replacement) replacement)
(car-safe replacement)
replacement)))
(push (cons (cons (concat "\\`" (regexp-quote key-seq) "\\'") nil)
(if (functionp replace) replace (cons nil replace)))
which-key-replacement-alist)
(when (and (not (functionp replacement)) (consp replacement))