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helm.el
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;;; helm.el --- Emacs incremental and narrowing framework -*- lexical-binding: t -*-
;; Copyright (C) 2007 Tamas Patrovics
;; 2008 ~ 2011 rubikitch <[email protected]>
;; 2011 ~ 2016 Thierry Volpiatto <[email protected]>
;; This is a fork of anything.el wrote by Tamas Patrovics.
;; Authors of anything.el: Tamas Patrovics
;; rubikitch <[email protected]>
;; Thierry Volpiatto <[email protected]>
;; Author: Thierry Volpiatto <[email protected]>
;; URL: http://github.com/emacs-helm/helm
;; 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/>.
;;; Code:
(require 'cl-lib)
(require 'advice) ; Shutup byte compiler about ad-deactivate.
(require 'helm-lib)
(require 'helm-multi-match)
(require 'helm-source)
;;; Multi keys
;;
;;
;;;###autoload
(defun helm-define-multi-key (keymap key functions &optional delay)
"In KEYMAP, define key sequence KEY for function list FUNCTIONS.
Each function runs sequentially for each KEY press.
If DELAY is specified, switch back to initial function of FUNCTIONS list
after DELAY seconds.
The functions in FUNCTIONS list take no args.
e.g
\(defun foo ()
(message \"Run foo\"))
\(defun bar ()
(message \"Run bar\"))
\(defun baz ()
(message \"Run baz\"))
\(helm-define-multi-key global-map \"<f5> q\" '(foo bar baz) 2)
Each time \"<f5> q\" is pressed, the next function is executed. Waiting
more than 2 seconds between key presses switches back to executing the first
function on the next hit."
(define-key keymap key (helm-make-multi-command functions delay)))
;;;###autoload
(defmacro helm-multi-key-defun (name docstring funs &optional delay)
"Define NAME as a multi-key command running FUNS.
After DELAY seconds, the FUNS list is reinitialized.
See `helm-define-multi-key'."
(declare (indent 2))
(setq docstring (if docstring (concat docstring "\n\n")
"This is a helm-ish multi-key command."))
`(defalias (quote ,name) (helm-make-multi-command ,funs ,delay) ,docstring))
(defun helm-make-multi-command (functions &optional delay)
"Return an anonymous multi-key command running FUNCTIONS.
Run each function in the FUNCTIONS list in turn when called within DELAY seconds."
(declare (indent 1))
(let ((funs functions)
(iter (cl-gensym "helm-iter-key"))
(timeout delay))
(eval (list 'defvar iter nil))
(lambda () (interactive) (helm-run-multi-key-command funs iter timeout))))
(defun helm-run-multi-key-command (functions iterator delay)
(let ((fn (lambda ()
(cl-loop for count from 1 to (length functions)
collect count)))
next)
(unless (and (symbol-value iterator)
;; Reset iterator when another key is pressed.
(eq this-command real-last-command))
(set iterator (helm-iter-list (funcall fn))))
(setq next (helm-iter-next (symbol-value iterator)))
(unless next
(set iterator (helm-iter-list (funcall fn)))
(setq next (helm-iter-next (symbol-value iterator))))
(and next (symbol-value iterator) (call-interactively (nth (1- next) functions)))
(when delay (run-with-idle-timer delay nil `(lambda ()
(setq ,iterator nil))))))
(helm-multi-key-defun helm-toggle-resplit-and-swap-windows
"Multi key command to re-split and swap helm window.
First call runs `helm-toggle-resplit-window',
and second call within 0.5s runs `helm-swap-windows'."
'(helm-toggle-resplit-window helm-swap-windows) 1)
(put 'helm-toggle-resplit-and-swap-windows 'helm-only t)
;;;###autoload
(defun helm-define-key-with-subkeys (map key subkey command
&optional other-subkeys menu exit-fn)
"Defines in MAP a KEY and SUBKEY to COMMAND.
This allows typing KEY to call COMMAND the first time and
type only SUBKEY on subsequent calls.
Arg MAP is the keymap to use, SUBKEY is the initial short key-binding to
call COMMAND.
Arg OTHER-SUBKEYS is an alist specifying other short key-bindings
to use once started e.g:
\(helm-define-key-with-subkeys global-map
\(kbd \"C-x v n\") ?n 'git-gutter:next-hunk '((?p . git-gutter:previous-hunk))\)
In this example, `C-x v n' will run `git-gutter:next-hunk'
subsequent \"n\"'s run this command again
and subsequent \"p\"'s run `git-gutter:previous-hunk'.
Arg MENU is a string displayed in minibuffer that
describes SUBKEY and OTHER-SUBKEYS.
Arg EXIT-FN specifies a function to run on exit.
For any other keys pressed, run their assigned command as defined
in MAP and then exit the loop running EXIT-FN, if specified.
NOTE: SUBKEY and OTHER-SUBKEYS bindings support char syntax only
\(e.g ?n), so don't use strings or vectors to define them."
(declare (indent 1))
(define-key map key
(lambda ()
(interactive)
(unwind-protect
(progn
(call-interactively command)
(while (let ((input (read-key menu)) other kb com)
(setq last-command-event input)
(cond
((eq input subkey)
(call-interactively command)
t)
((setq other (assoc input other-subkeys))
(call-interactively (cdr other))
t)
(t
(setq kb (vector last-command-event))
(setq com (lookup-key map kb))
(if (commandp com)
(call-interactively com)
(setq unread-command-events
(nconc (mapcar 'identity kb)
unread-command-events)))
nil)))))
(and exit-fn (funcall exit-fn))))))
;;; Keymap
;;
;;
(defvar helm-map
(let ((map (make-sparse-keymap)))
(set-keymap-parent map minibuffer-local-map)
(define-key map (kbd "<down>") 'helm-next-line)
(define-key map (kbd "<up>") 'helm-previous-line)
(define-key map (kbd "C-n") 'helm-next-line)
(define-key map (kbd "C-p") 'helm-previous-line)
(define-key map (kbd "<C-down>") 'helm-follow-action-forward)
(define-key map (kbd "<C-up>") 'helm-follow-action-backward)
(define-key map (kbd "<prior>") 'helm-previous-page)
(define-key map (kbd "<next>") 'helm-next-page)
(define-key map (kbd "M-v") 'helm-previous-page)
(define-key map (kbd "C-v") 'helm-next-page)
(define-key map (kbd "M-<") 'helm-beginning-of-buffer)
(define-key map (kbd "M->") 'helm-end-of-buffer)
(define-key map (kbd "C-g") 'helm-keyboard-quit)
(define-key map (kbd "<right>") 'helm-next-source)
(define-key map (kbd "<left>") 'helm-previous-source)
(define-key map (kbd "<RET>") 'helm-maybe-exit-minibuffer)
(define-key map (kbd "C-i") 'helm-select-action)
(define-key map (kbd "C-z") 'helm-execute-persistent-action)
(define-key map (kbd "C-j") 'helm-execute-persistent-action)
(define-key map (kbd "C-o") 'helm-next-source)
(define-key map (kbd "C-l") 'helm-recenter-top-bottom-other-window)
(define-key map (kbd "M-C-l") 'helm-reposition-window-other-window)
(define-key map (kbd "C-M-v") 'helm-scroll-other-window)
(define-key map (kbd "M-<next>") 'helm-scroll-other-window)
(define-key map (kbd "C-M-y") 'helm-scroll-other-window-down)
(define-key map (kbd "C-M-S-v") 'helm-scroll-other-window-down)
(define-key map (kbd "M-<prior>") 'helm-scroll-other-window-down)
(define-key map (kbd "<C-M-down>") 'helm-scroll-other-window)
(define-key map (kbd "<C-M-up>") 'helm-scroll-other-window-down)
(define-key map (kbd "C-@") 'helm-toggle-visible-mark)
(define-key map (kbd "C-SPC") 'helm-toggle-visible-mark)
(define-key map (kbd "M-SPC") 'helm-toggle-visible-mark)
(define-key map (kbd "M-[") nil)
(define-key map (kbd "M-(") 'helm-prev-visible-mark)
(define-key map (kbd "M-)") 'helm-next-visible-mark)
(define-key map (kbd "C-k") 'helm-delete-minibuffer-contents)
(define-key map (kbd "C-x C-f") 'helm-quit-and-find-file)
(define-key map (kbd "M-m") 'helm-toggle-all-marks)
(define-key map (kbd "M-a") 'helm-mark-all)
(define-key map (kbd "M-U") 'helm-unmark-all)
(define-key map (kbd "C-w") 'helm-yank-text-at-point)
(define-key map (kbd "C-M-a") 'helm-show-all-in-this-source-only)
(define-key map (kbd "C-M-e") 'helm-display-all-sources)
(define-key map (kbd "C-r") 'undefined)
(define-key map (kbd "C-s") 'undefined)
(define-key map (kbd "M-s") 'undefined)
(define-key map (kbd "C-}") 'helm-narrow-window)
(define-key map (kbd "C-{") 'helm-enlarge-window)
(define-key map (kbd "C-c -") 'helm-swap-windows)
(define-key map (kbd "C-c C-y") 'helm-yank-selection)
(define-key map (kbd "C-c C-k") 'helm-kill-selection-and-quit)
(define-key map (kbd "C-c C-i") 'helm-copy-to-buffer)
(define-key map (kbd "C-c C-f") 'helm-follow-mode)
(define-key map (kbd "C-c C-u") 'helm-refresh)
(define-key map (kbd "C-c >") 'helm-toggle-truncate-line)
(define-key map (kbd "M-p") 'previous-history-element)
(define-key map (kbd "M-n") 'next-history-element)
(define-key map (kbd "C-!") 'helm-toggle-suspend-update)
(define-key map (kbd "C-x b") 'helm-resume-previous-session-after-quit)
(define-key map (kbd "C-x C-b") 'helm-resume-list-buffers-after-quit)
;; Disable `file-cache-minibuffer-complete'.
(define-key map (kbd "<C-tab>") 'undefined)
;; Multi keys
(define-key map (kbd "C-t") 'helm-toggle-resplit-and-swap-windows)
;; Debugging command
(define-key map (kbd "C-h C-d") 'undefined)
(define-key map (kbd "C-h C-d") 'helm-enable-or-switch-to-debug)
;; Allow to eval keymap without errors.
(define-key map [f1] nil)
(define-key map (kbd "C-h C-h") 'undefined)
(define-key map (kbd "C-h h") 'undefined)
;; Use `describe-mode' key in `global-map'.
(cl-dolist (k (where-is-internal 'describe-mode global-map))
(define-key map k 'helm-help))
(define-key map (kbd "C-c ?") 'helm-help)
;; Bind all actions from 1 to 12 to their corresponding nth index+1.
(cl-loop for n from 0 to 12 do
(define-key map (kbd (format "<f%s>" (1+ n)))
`(lambda ()
(interactive)
(helm-select-nth-action ,n))))
;; Bind keys to allow executing default action
;; on first 9 candidates before and after selection.
(cl-loop for n from 1 to 9
for key = (format "C-c %d" n)
for key- = (format "C-x %d" n)
for fn = `(lambda ()
(interactive)
(helm-execute-selection-action-at-nth ,n))
for fn- = `(lambda ()
(interactive)
(helm-execute-selection-action-at-nth ,(- n)))
do (progn
(define-key map (kbd key) fn)
(define-key map (kbd key-) fn-)))
map)
"Keymap for helm.")
(defgroup helm nil
"Open helm."
:prefix "helm-" :group 'convenience)
(defcustom helm-completion-window-scroll-margin 5
" `scroll-margin' to use for helm completion window.
Set to 0 to disable.
NOTE: This has no effect when `helm-display-source-at-screen-top'
id is non-`nil'."
:group 'helm
:type 'integer)
(defcustom helm-display-source-at-screen-top t
"Display candidates at the top of screen.
This happens with `helm-next-source' and `helm-previous-source'.
NOTE: When non-`nil' (default), disable `helm-completion-window-scroll-margin'."
:group 'helm
:type 'boolean)
(defcustom helm-candidate-number-limit 100
"Global limit for number of candidates displayed.
When the pattern is empty, the number of candidates shown will be
as set here instead of the entire list, which may be hundreds or
thousands. Since narrowing and filtering rapidly reduces
available candidates, having a small list will keep the interface
responsive.
Set this value to nil for no limit."
:group 'helm
:type '(choice (const :tag "Disabled" nil) integer))
(defcustom helm-input-idle-delay 0.01
"Idle time before updating, specified in seconds."
:group 'helm
:type 'float)
(defcustom helm-exit-idle-delay 0
"Idle time before exiting minibuffer while helm is updating.
Has no affect when helm-buffer is up to date \(i.e exit without
delay in this condition\)."
:group 'helm
:type 'float)
(defcustom helm-full-frame nil
"Use current window for showing candidates.
If t, then Helm does not pop-up new window."
:group 'helm
:type 'boolean)
(defvaralias 'helm-samewindow 'helm-full-frame)
(make-obsolete-variable 'helm-samewindow 'helm-full-frame "1.4.8.1")
(defcustom helm-candidate-separator
"--------------------"
"Candidates separator of `multiline' source."
:group 'helm
:type 'string)
(defcustom helm-save-configuration-functions
'(set-window-configuration . current-window-configuration)
"Functions used to restore or save configurations for frames and windows.
Specified as a pair of functions, where car is the restore function and cdr
is the save function.
To save and restore frame configuration, set this variable to
'\(set-frame-configuration . current-frame-configuration\)
NOTE: This may not work properly with own-frame minibuffer
settings. Older versions saves/restores frame configuration, but
the default has changed now to avoid flickering."
:group 'helm
:type 'sexp)
(defcustom helm-persistent-action-use-special-display nil
"If non-`nil', use `special-display-function' in persistent action."
:group 'helm
:type 'boolean)
(defcustom helm-display-function 'helm-default-display-buffer
"Function to display *helm* buffer.
By default, it is `helm-default-display-buffer', which affects
`helm-full-frame'."
:group 'helm
:type 'symbol)
(defcustom helm-case-fold-search 'smart
"Adds 'smart' option to `case-fold-search'.
Smart option ignores case for searches as long as there are no
upper case characters in the pattern.
Use nil or t to turn off smart behavior and use
`case-fold-search' behavior.
Default is smart.
NOTE: Case fold search has no effect when searching asynchronous
sources, which rely on customized features implemented directly
into their execution process. See helm-grep.el for an example."
:group 'helm
:type '(choice (const :tag "Ignore case" t)
(const :tag "Respect case" nil)
(other :tag "Smart" 'smart)))
(defcustom helm-file-name-case-fold-search
(if (memq system-type
'(cygwin windows-nt ms-dos darwin))
t
helm-case-fold-search)
"Local setting of `helm-case-fold-search' for reading filenames.
See `helm-case-fold-search' for more info."
:group 'helm
:type 'symbol)
(defcustom helm-reuse-last-window-split-state nil
"Use the same state of window split, vertical or horizontal.
`helm-toggle-resplit-window' for the next helm session will use
the same window scheme as the previous session unless
`helm-split-window-default-side' is 'same or 'other."
:group 'helm
:type 'boolean)
(defcustom helm-split-window-preferred-function 'helm-split-window-default-fn
"Default function used for splitting window."
:group 'helm
:type 'function)
(defcustom helm-split-window-default-side 'below
"The default side to display `helm-buffer'.
Must be one acceptable arg for `split-window' SIDE,
that is `below', `above', `left' or `right'.
Other acceptable values are `same' which always display
`helm-buffer' in current window and `other' that display
`helm-buffer' below if only one window or in
`other-window-for-scrolling' when available.
A nil value has same effect as `below'.
If `helm-full-frame' is non-`nil', it take precedence over this setting.
See also `helm-split-window-in-side-p' and `helm-always-two-windows' that
take precedence over this.
NOTE: this have no effect if `helm-split-window-preferred-function' is not
`helm-split-window-default-fn' unless this new function can handle this."
:group 'helm
:type 'symbol)
(defcustom helm-display-buffer-default-size nil
"Initial height of `helm-buffer', specified as an integer or a function.
The function should take one arg and the responsibility for
re-sizing the window; function's return value is ignored. See
`display-buffer' for more info."
:group 'helm
:type '(choice integer function))
(defcustom helm-split-window-in-side-p nil
"Forces split inside selected window when non-`nil'.
See also `helm-split-window-default-side'.
NOTE: this has no effect if
`helm-split-window-preferred-function' is not
`helm-split-window-default-fn' unless this new function can
handle this."
:group 'helm
:type 'boolean)
(defcustom helm-always-two-windows nil
"When non-`nil' helm uses two windows in this frame.
To display `helm-buffer' in one window and `helm-current-buffer'
in the other.
Note: this has no effect when `helm-split-window-in-side-p' is non-`nil',
or when `helm-split-window-default-side' is set to 'same.
When `helm-autoresize-mode' is enabled, setting this to nil
will have no effect.
Also when non-`nil' it overrides the effect of `helm-split-window-default-side'
set to `other'."
:group 'helm
:type 'boolean)
(defcustom helm-sources-using-default-as-input '(helm-source-imenu
helm-source-imenu-all
helm-source-info-elisp
helm-source-etags-select
helm-source-man-pages
helm-source-occur
helm-source-moccur)
"List of helm sources that need to use `helm--maybe-use-default-as-input'.
When a source is a member of this list, default `thing-at-point'
will be used as input."
:group 'helm
:type '(repeat (choice symbol)))
(defcustom helm-delete-minibuffer-contents-from-point t
"When non-`nil', `helm-delete-minibuffer-contents' delete region from `point'.
Otherwise delete `minibuffer-contents'.
See documentation for `helm-delete-minibuffer-contents'."
:group 'helm
:type 'boolean)
(defcustom helm-follow-mode-persistent nil
"When non-`nil', use last state of `helm-follow-mode' for the next helm session.
To make this behavior persistent across emacs sessions, set the
`follow' attribute explicitly in the source."
:group 'helm
:type 'boolean)
(defcustom helm-prevent-escaping-from-minibuffer t
"Prevent escape from minibuffer during the helm session."
:group 'helm
:type 'boolean)
(defcustom helm-move-to-line-cycle-in-source nil
"Cycle to the beginning or end of the list after reaching the bottom or top.
This applies when using `helm-next/previous-line'."
:group 'helm
:type 'boolean)
(defcustom helm-fuzzy-match-fn 'helm-fuzzy-match
"The function for fuzzy matching in `helm-source-sync' based sources."
:group 'helm
:type 'function)
(defcustom helm-fuzzy-search-fn 'helm-fuzzy-search
"The function for fuzzy matching in `helm-source-in-buffer' based sources."
:group 'helm
:type 'function)
(defcustom helm-fuzzy-sort-fn 'helm-fuzzy-matching-default-sort-fn
"The sort transformer function used in fuzzy matching.
When nil, sorting is not done."
:group 'helm
:type 'function)
(defcustom helm-fuzzy-matching-highlight-fn 'helm-fuzzy-default-highlight-match
"The function to highlight fuzzy matches.
When nil, no highlighting is done."
:group 'helm
:type 'function)
(defcustom helm-autoresize-max-height 40
"Specifies maximum height and defaults to percent of helm window's frame height.
See `fit-window-to-buffer' for more infos."
:group 'helm
:type 'integer)
(defcustom helm-autoresize-min-height 10
"Specifies minimum height and defaults to percent of helm window's frame height.
If nil, `window-min-height' is used.
See `fit-window-to-buffer' for details."
:group 'helm
:type 'integer)
(defcustom helm-input-method-verbose-flag nil
"The default value for `input-method-verbose-flag' used in helm minibuffer.
It is nil by default, which does not turn off input method. Helm
updates and exits without interruption -- necessary for complex methods.
If set to any other value as per `input-method-verbose-flag',
then use `C-\\' to disable the `current-input-method' to exit or update helm"
:group 'helm
:type '(radio :tag "A flag to control extra guidance for input methods in helm."
(const :tag "Never provide guidance" nil)
(const :tag "Always provide guidance" t)
(const :tag "Provide guidance only for complex methods" complex-only)))
(defcustom helm-display-header-line t
"Display header-line when non nil."
:group 'helm
:type 'boolean)
(defcustom helm-inherit-input-method t
"Inherit `current-input-method' from `current-buffer' when non-`nil'.
The default is to enable this by default and then toggle
`toggle-input-method'."
:group 'helm
:type 'boolean)
(defcustom helm-echo-input-in-header-line nil
"Send current input in header-line."
:group 'helm
:type 'boolean)
(defcustom helm-tramp-connection-min-time-diff 5
"Value of `tramp-connection-min-time-diff' for helm remote processes.
If set to zero helm remote processes are not delayed.
Setting this to a value less than 5 or disabling it with a zero value
is risky, however on emacs versions starting at 24.5 it seems
it is now possible to disable it.
Anyway at any time in helm you can suspend your processes while typing
by hitting \\<helm-map> `\\[helm-toggle-suspend-update]'.
Only async sources than use a sentinel calling
`helm-process-deferred-sentinel-hook' are affected by this."
:type 'integer
:group 'helm)
(defcustom helm-debug-root-directory nil
"When non-`nil', saves helm log messages to a file in this directory.
When `nil' log messages are saved to a buffer instead.
Log message are saved only when `helm-debug' is non-nil, so setting this
doesn't enable debugging by itself.
See `helm-log-save-maybe' for more info."
:type 'string
:group 'helm)
;;; Faces
;;
;;
(defgroup helm-faces nil
"Customize the appearance of helm."
:prefix "helm-"
:group 'faces
:group 'helm)
(defface helm-source-header
'((((background dark))
:background "#22083397778B"
:foreground "white"
:weight bold :height 1.3 :family "Sans Serif")
(((background light))
:background "#abd7f0"
:foreground "black"
:weight bold :height 1.3 :family "Sans Serif"))
"Face for source header in the helm buffer."
:group 'helm-faces)
(defface helm-visible-mark
'((((min-colors 88) (background dark))
(:background "green1" :foreground "black"))
(((background dark))
(:background "green" :foreground "black"))
(((background light)) :background "#d1f5ea")
(((min-colors 88))
(:background "green1"))
(t (:background "green")))
"Face for visible mark."
:group 'helm-faces)
(defface helm-header
'((t (:inherit header-line)))
"Face for header lines in the helm buffer."
:group 'helm-faces)
(defface helm-candidate-number
'((((background dark)) :background "Yellow" :foreground "black")
(((background light)) :background "#faffb5" :foreground "black"))
"Face for candidate number in mode-line." :group 'helm-faces)
(defface helm-selection
'((((background dark)) :background "ForestGreen"
:distant-foreground "black")
(((background light)) :background "#b5ffd1"
:distant-foreground "black"))
"Face for currently selected item in the helm buffer."
:group 'helm-faces)
(defface helm-separator
'((((background dark)) :foreground "red")
(((background light)) :foreground "#ffbfb5"))
"Face for multiline source separator."
:group 'helm-faces)
(defface helm-action
'((t (:underline t)))
"Face for action lines in the helm action buffer."
:group 'helm-faces)
(defface helm-prefarg
'((((background dark)) :foreground "green")
(((background light)) :foreground "red"))
"Face for showing prefix arg in mode-line."
:group 'helm-faces)
(defface helm-match
'((((background light)) :foreground "#b00000")
(((background dark)) :foreground "gold1"))
"Face used to highlight matches."
:group 'helm-faces)
(defface helm-header-line-left-margin
'((t (:foreground "black" :background "yellow")))
"Face used to highlight helm-header sign in left-margin."
:group 'helm-faces)
;;; Variables.
;;
;;
(defvar helm-type-attributes nil
"It's a list of \(TYPE ATTRIBUTES ...\).
ATTRIBUTES are the same as attributes for `helm-sources'. TYPE
connects the value to the appropriate sources. Don't set this
directly, use `define-helm-type-attribute' instead.
This alist is for specifying common attributes for multiple
sources. For example, sources which provide files can specify
common attributes with a `file' type.")
(defvar helm-source-filter nil
"A list of source names to be displayed.
Other sources won't appear in the search results.
If nil, no filtering is done.
See also `helm-set-source-filter'.")
(defvar helm-selection-overlay nil
"Overlay used to highlight the currently selected item.")
(defvar helm-async-processes nil
"List of information about asynchronous processes managed by helm.")
(defvar helm-before-initialize-hook nil
"Runs before helm initialization.
This hook runs before init functions in `helm-sources', which is
before creation of `helm-buffer'. Set local variables for
`helm-buffer' that need a value from `current-buffer' with
`helm-set-local-variable'.")
(defvar helm-after-initialize-hook nil
"Runs after helm initialization.
This hook runs after `helm-buffer' is created but not from
`helm-buffer'. The hook needs to specify in which buffer to run.")
(defvar helm-update-hook nil
"Run after the helm buffer is updated.
This hook runs at the beginning of buffer. The first candidate is
selected after running this hook. See also
`helm-after-update-hook'.")
(defvar helm-after-update-hook nil
"Runs after updating the helm buffer with the new input pattern.
This is very similar to `helm-update-hook' except the selection
is not moved. Hook is useful for selecting a particular object
instead of the first one.")
(defvar helm-cleanup-hook nil
"Runs after exiting the minibuffer and before performing an
action.
This hook runs even if helm exits the minibuffer abnormally (e.g.
via `helm-keyboard-quit').")
(defvar helm-select-action-hook nil
"Runs when opening the action buffer.")
(defvar helm-before-action-hook nil
"Runs before executing action.
Unlike `helm-cleanup-hook', this hook runs before helm closes the
minibuffer and also before performing an action.")
(defvar helm-after-action-hook nil
"Runs after executing action.")
(defvar helm-exit-minibuffer-hook nil
"Runs just before exiting the minibuffer.
This hook runs when helm exits the minibuffer normally (e.g. via
candidate selection), but does NOT run if helm exits the
minibuffer abnormally (e.g. via `helm-keyboard-quit').")
(defvar helm-after-persistent-action-hook nil
"Runs after executing persistent action.")
(defvar helm-move-selection-before-hook nil
"Runs before moving selection in `helm-buffer'.")
(defvar helm-move-selection-after-hook nil
"Runs after moving selection in `helm-buffer'.")
(defvar helm-after-preselection-hook nil
"Runs after pre-selection in `helm-buffer'.")
(defvar helm-window-configuration-hook nil
"Runs when switching to and from the action buffer.")
(defconst helm-restored-variables
'(helm-candidate-number-limit
helm-source-filter
helm-map
helm-sources)
"Variables restored after an `helm' invocation.")
(defvar helm-execute-action-at-once-if-one nil
"With the only remaining candidate, executes the default action and then exits.
This variable accepts a function with no args and returns a boolean
value.")
(defvar helm-quit-if-no-candidate nil
"When non-`nil', quits if there are no candidates.
This variable accepts a function.")
(defvar helm-debug-variables nil
"A list of helm variables that `helm-debug-output' displays.
If `nil', `helm-debug-output' includes only variables with
`helm-' prefixes.")
(defvar helm-debug-buffer "*Debug Helm Log*")
(defvar helm-debug nil
"If non-`nil', write log message to `helm-debug-buffer'.
Default is `nil', which disables writing log messages because the
size of `helm-debug-buffer' grows quickly.")
(defvar helm-compile-source-functions
'(helm-compile-source--type
helm-compile-source--dummy
helm-compile-source--candidates-in-buffer)
"Functions to compile elements of `helm-sources' (plug-in).")
(defvar helm-mode-line-string "\
\\<helm-map>\
\\[helm-help]:Help \
\\[helm-select-action]:Act \
\\[helm-maybe-exit-minibuffer]/\
f1/f2/f-n:NthAct \
\\[helm-toggle-suspend-update]:Tog.suspend"
"Help string displayed by helm in the mode-line.
It is either a string or a list of two string arguments where the
first string is the name and the second string is displayed in
the mode-line. When `nil', uses default `mode-line-format'.")
(defvar helm-minibuffer-set-up-hook nil
"Hook that runs at minibuffer initialization.
A hook useful for modifying minibuffer settings in helm.
An example that hides the minibuffer when using
`helm-echo-input-in-header-line':
(add-hook 'helm-minibuffer-set-up-hook #'helm-hide-minibuffer-maybe)
Note that we check `helm-echo-input-in-header-line' value
from `helm-buffer' which allow detecting possible local
value of this var.")
(defvar helm-help-message
"* Helm Generic Help
\\<helm-map>`helm' is an Emacs framework for incremental
completions and narrowing selections.
Helm narrows the list of candidates as the pattern is typed and
updates the list in a live feedback. Helm accepts multiple
patterns (entered with a space between patterns). Helm uses
familiar Emacs navigation keys to move up and down the list.
`RET' selects the candidate from the list.
** Helm Help
C-h m\t\tShows this generic Helm help.
** Helm's Basic Operations and Default Key Bindings
| Key | Alternative Keys | Command |
|---------+------------------+-----------------------------------------------------------|
| C-p | Up | Previous Line |
| C-n | Down | Next Line |
| M-v | PageUp | Previous Page |
| C-v | PageDown | Next Page |
| Enter | | Execute first (default) action / Select |
| M-< | | First Line |
| M-> | | Last Line |
| C-M-S-v | M-PageUp, C-M-y | Previous Page (other-window) |
| C-M-v | M-PageDown | Next Page (other-window) |
| Tab | C-i | Show action list |
| Left | | Previous Source |
| Right | C-o | Next Source |
| C-k | | Delete pattern (with prefix arg delete from point to end) |
| C-j | C-z | Persistent Action (Execute and keep helm session) |
** Shortcuts For nth Action
f1-12: Execute nth Action where n is 1 to 12.
** Shortcuts for executing Default Action on the nth candidate
C-x <n> => executes default action on number <n> candidate before currently selected candidate.
C-c <n> => executes default action on number <n> candidate after current selected candidate.
n is limited only to 1 through 9. For larger jumps use other
navigation keys. Also note that Helm candidates list by default
do not display line numbers. Line numbers can be enabled with the
linum-relative package.
** Visible Marks
Visible marks are displayed next to selected candidates, if any.
Some Helm actions operate on marked candidates.
** Frequently Used Commands
\\[helm-toggle-resplit-and-swap-windows]\t\tToggle vertical/horizontal split on first hit and swap helm window on second hit.
\\[helm-quit-and-find-file]\t\tDrop into `helm-find-files'.
\\[helm-kill-selection-and-quit]\t\tKill display value of candidate and quit (with prefix arg, kill the real value).
\\[helm-yank-selection]\t\tYank current selection into pattern.
\\[helm-follow-mode]\t\tToggle automatic execution of persistent action.
\\[helm-follow-action-forward]\tRun persistent action and then select next line.
\\[helm-follow-action-backward]\t\tRun persistent action and then select previous line.
\\[helm-refresh]\t\tRecalculate and redisplay candidates.
\\[helm-toggle-suspend-update]\t\tSuspend/reenable updates to candidates list.
** Global Commands
\\<global-map>\\[helm-resume] revives the last `helm' session.
Very useful for resuming previous Helm. Binding a key to this
command will greatly improve `helm' interactivity especially
after an accidental exit.
** Debugging helm
helm have a special variable called `helm-debug', setting it to non-nil
will allow helm logging in a special outline-mode buffer.
Helm is resetting the variable to nil at end of each session.
A convenient command is bound to \\<helm-map>\\[helm-enable-or-switch-to-debug]
and allow turning debugging to this session only.
To avoid accumulating log while you are typing your pattern, you can use
\\<helm-map>\\[helm-toggle-suspend-update] to turn off updating, then when you
are ready turn it on again to start updating.
Once you exit your helm session you can access the debug buffer with `helm-debug-open-last-log'.
It is possible to save logs to dated files when `helm-debug-root-directory'
is set to a valid directory.
NOTE: Be aware that helm log buffers grow really fast, so use `helm-debug' only when needed.
** Helm Map
\\{helm-map}"
"Message string containing detailed help for `helm'.
It also accepts function or variable symbol.")
(defvar helm-autoresize-mode) ;; Undefined in `helm-default-display-buffer'.
;;; Internal Variables
;;
;;
(defvar helm-current-prefix-arg nil
"Record `current-prefix-arg' when exiting minibuffer.")
(defvar helm-saved-action nil
"Saved value of the currently selected action by key.")
(defvar helm-saved-current-source nil
"Value of the current source when the action list is shown.")
(defvar helm-compiled-sources nil
"Compiled version of `helm-sources'.")
(defvar helm-in-persistent-action nil
"Flag whether in persistent-action or not.")
(defvar helm-last-buffer nil
"`helm-buffer' of previously `helm' session.")
(defvar helm-saved-selection nil
"Value of the currently selected object when the action list is shown.")
(defvar helm-sources nil
"[INTERNAL] Value of current sources in use, a list.")
(defvar helm-buffer-file-name nil
"Variable `buffer-file-name' when `helm' is invoked.")
(defvar helm-candidate-cache (make-hash-table :test 'equal)
"Holds the available candidate within a single helm invocation.")
(defvar helm-input ""
"The input typed in the candidates panel.")
(defvar helm-input-local nil
"Internal, store locally `helm-pattern' value for later use in `helm-resume'.")
(defvar helm-source-name nil)
(defvar helm-current-source nil)
(defvar helm-candidate-buffer-alist nil)
(defvar helm-tick-hash (make-hash-table :test 'equal))
(defvar helm-issued-errors nil)
(defvar helm--last-log-file nil
"The name of the log file of the last helm session.")
(defvar helm-follow-mode nil)
(defvar helm--local-variables nil)
(defvar helm-split-window-state nil)
(defvar helm--window-side-state nil)
(defvar helm-selection-point nil)
(defvar helm-alive-p nil)
(defvar helm-visible-mark-overlays nil)
(defvar helm-update-blacklist-regexps '("^" "^ *" "$" "!" " " "\\b"
"\\<" "\\>" "\\_<" "\\_>" ".*"))
(defvar helm-force-updating-p nil)
(defvar helm-exit-status 0
"Flag to inform if helm did exit or quit.
0 means helm did exit when executing an action.
1 means helm did quit with \\[keyboard-quit]
Knowing this exit-status could help restore a window config when helm aborts
in some special circumstances.
See `helm-exit-minibuffer' and `helm-keyboard-quit'.")
(defvar helm-minibuffer-confirm-state nil)
(defvar helm-quit nil)
(defvar helm-attributes nil "List of all `helm' attributes.")
(defvar helm-buffers nil
"Helm buffers listed in order of most recently used.")
(defvar helm-current-position nil
"Cons of \(point . window-start\) when `helm' is invoked.
`helm-current-buffer' uses this to restore position after
`helm-keyboard-quit'")
(defvar helm-last-frame-or-window-configuration nil
"Used to store window or frame configuration at helm start.")
(defvar helm-onewindow-p nil)
(defvar helm-types nil)
(defvar helm--mode-line-string-real nil) ; The string to display in mode-line.
(defvar helm-persistent-action-display-window nil)
(defvar helm-marked-candidates nil
"Marked candadates. List of \(source . real\) pair.")
(defvar helm--mode-line-display-prefarg nil)
(defvar helm--temp-follow-flag nil
"[INTERNAL] A simple flag to notify persistent action we are following.")
(defvar helm--reading-passwd-or-string nil)
(defvar helm--in-update nil)
(defvar helm--in-fuzzy nil)
(defvar helm--maybe-use-default-as-input nil
"Flag to notify the use of use-default-as-input.
Use only in let-bindings.
Use :default arg of `helm' as input to update display.
Note that if also :input is specified as `helm' arg, it will take
precedence on :default.")
(defvar helm--temp-hooks nil
"Store temporary hooks added by `with-helm-temp-hook'.")
(defvar helm-truncate-lines nil
"[Internal] Don't set this globally, it is used as a local var.")
(defvar helm--prompt nil)
(defvar helm--file-completion-sources
'("Find Files" "Read File Name" "Read File Name History")
"Sources that use the *find-files mechanism can be added here.
Sources generated by `helm-mode' don't need to be added here
because they are automatically added.