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ivy.el
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;;; ivy.el --- Incremental Vertical completYon -*- lexical-binding: t -*-
;; Copyright (C) 2015-2024 Free Software Foundation, Inc.
;; Author: Oleh Krehel <[email protected]>
;; Maintainer: Basil L. Contovounesios <[email protected]>
;; URL: https://github.com/abo-abo/swiper
;; Version: 0.14.2
;; Package-Requires: ((emacs "24.5"))
;; Keywords: matching
;; This file is part of GNU Emacs.
;; This file 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, 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.
;; For a full copy of the GNU General Public License
;; see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; This package provides `ivy-read' as an alternative to
;; `completing-read' and similar functions.
;;
;; There's no intricate code to determine the best candidate.
;; Instead, the user can navigate to it with `ivy-next-line' and
;; `ivy-previous-line'.
;;
;; The matching is done by splitting the input text by spaces and
;; re-building it into a regex.
;; So "for example" is transformed into "\\(for\\).*\\(example\\)".
;;; Code:
(require 'colir)
(require 'ivy-overlay)
(require 'ivy-faces)
(require 'cl-lib)
(require 'ring)
(eval-when-compile
(require 'subr-x)
(unless (fboundp 'static-if)
(defmacro static-if (condition then-form &rest else-forms)
"Expand to THEN-FORM or ELSE-FORMS based on compile-time CONDITION.
Polyfill for Emacs 30 `static-if'."
(declare (debug (sexp sexp &rest sexp)) (indent 2))
(if (eval condition lexical-binding)
then-form
(macroexp-progn else-forms)))))
;;* Customization
(defgroup ivy nil
"Incremental vertical completion."
:group 'convenience)
(defcustom ivy-height 10
"Number of lines for the minibuffer window.
See also `ivy-height-alist'."
:type 'integer)
(defcustom ivy-count-format "%-4d "
"The style to use for displaying the current candidate count for `ivy-read'.
Set this to \"\" to suppress the count visibility.
Set this to \"(%d/%d) \" to display both the index and the count."
:type '(choice
(const :tag "Count disabled" "")
(const :tag "Count matches" "%-4d ")
(const :tag "Count matches and show current match" "(%d/%d) ")
string))
(defcustom ivy-pre-prompt-function nil
"When non-nil, add strings before the `ivy-read' prompt."
:type '(choice
(const :tag "Do nothing" nil)
(function :tag "Custom function")))
(defcustom ivy-add-newline-after-prompt nil
"When non-nil, add a newline after the `ivy-read' prompt."
:type 'boolean)
(defcustom ivy-wrap nil
"When non-nil, wrap around after the first and the last candidate."
:type 'boolean)
(defcustom ivy-display-style 'fancy
"The style for formatting the minibuffer.
By default, the matched strings are copied as is.
The fancy display style highlights matching parts of the regexp,
a behavior similar to `swiper'."
:type '(choice
(const :tag "Plain" nil)
(const :tag "Fancy" fancy)))
(defcustom ivy-on-del-error-function #'abort-recursive-edit
"Function to call when deletion fails during completion.
The usual reason for `ivy-backward-delete-char' to fail is when
there is no text left to delete, i.e., when it is called at the
beginning of the minibuffer.
The default setting provides a quick exit from completion.
Another common option is `ignore', which does nothing."
:type '(choice
(const :tag "Exit completion" abort-recursive-edit)
(const :tag "Do nothing" ignore)
(function :tag "Custom function")))
(defcustom ivy-extra-directories '("../" "./")
"Add this to the front of the list when completing file names.
Only \"./\" and \"../\" apply here. They appear in reverse order."
:type '(repeat :tag "Dirs"
(choice
(const :tag "Parent Directory" "../")
(const :tag "Current Directory" "./"))))
(defcustom ivy-use-virtual-buffers nil
"When non-nil, add recent files and/or bookmarks to `ivy-switch-buffer'.
The value `recentf' includes only recent files to the virtual
buffers list, whereas the value `bookmarks' does the same for
bookmarks. Any other non-nil value includes both."
:type '(choice
(const :tag "Don't use virtual buffers" nil)
(const :tag "Recent files" recentf)
(const :tag "Bookmarks" bookmarks)
(const :tag "All virtual buffers" t)))
(defvar ivy--display-function nil
"The display-function is used in current.")
(defvar ivy-display-functions-props
'((ivy-display-function-overlay :cleanup ivy-overlay-cleanup))
"Map Ivy display functions to their property lists.
Examples of properties include associated `:cleanup' functions.")
(defcustom ivy-display-functions-alist
'((ivy-completion-in-region . ivy-display-function-overlay)
(t . nil))
"An alist for customizing where to display the candidates.
Each key is a caller symbol. When the value is nil (the default),
the candidates are shown in the minibuffer. Otherwise, the value
is a function which takes a string argument comprising the
current matching candidates and displays it somewhere.
See also `https://github.com/abo-abo/swiper/wiki/ivy-display-function'."
:type '(alist
:key-type symbol
:value-type (choice
(const :tag "Minibuffer" nil)
(const :tag "LV" ivy-display-function-lv)
(const :tag "Popup" ivy-display-function-popup)
(const :tag "Overlay" ivy-display-function-overlay)
(function :tag "Custom function"))))
(defvar ivy-completing-read-dynamic-collection nil
"Run `ivy-completing-read' with `:dynamic-collection t`.")
(defcustom ivy-completing-read-handlers-alist
'((tmm-menubar . completing-read-default)
(tmm-shortcut . completing-read-default)
(bbdb-create . ivy-completing-read-with-empty-string-def)
(auto-insert . ivy-completing-read-with-empty-string-def)
(Info-on-current-buffer . ivy-completing-read-with-empty-string-def)
(Info-follow-reference . ivy-completing-read-with-empty-string-def)
(Info-menu . ivy-completing-read-with-empty-string-def)
(Info-index . ivy-completing-read-with-empty-string-def)
(Info-virtual-index . ivy-completing-read-with-empty-string-def)
(info-display-manual . ivy-completing-read-with-empty-string-def))
"An alist of handlers to replace `completing-read' in `ivy-mode'."
:type '(alist :key-type symbol :value-type function))
(defcustom ivy-height-alist nil
"An alist to customize `ivy-height'.
It is a list of (CALLER . HEIGHT). CALLER is a caller of
`ivy-read' and HEIGHT is the number of lines displayed.
HEIGHT can also be a function that returns the number of lines."
:type '(alist
:key-type function
:value-type (choice integer function)))
(defvar ivy-completing-read-ignore-handlers-depth -1
"Used to avoid infinite recursion.
If `(minibuffer-depth)' equals this, `ivy-completing-read' will
act as if `ivy-completing-read-handlers-alist' is empty.")
(defvar ivy-highlight-grep-commands nil
"List of grep-like commands.")
(defvar ivy--actions-list nil
"A list of extra actions per command.")
(defun ivy-set-actions (cmd actions)
"Set CMD extra exit points to ACTIONS."
(setq ivy--actions-list
(plist-put ivy--actions-list cmd actions)))
(defun ivy-add-actions (cmd actions)
"Add extra exit points ACTIONS to CMD.
Existing exit points of CMD are overwritten by those in
ACTIONS that have the same key."
(setq ivy--actions-list
(plist-put ivy--actions-list cmd
(cl-delete-duplicates
(append (plist-get ivy--actions-list cmd) actions)
:key #'car :test #'equal))))
(defun ivy--compute-extra-actions (action caller)
"Add extra actions to ACTION based on CALLER."
(let* ((extra-actions (cl-delete-duplicates
(append (plist-get ivy--actions-list t)
(plist-get ivy--actions-list this-command)
(plist-get ivy--actions-list caller))
:key #'car :test #'equal))
(override-default (assoc "o" extra-actions)))
(cond (override-default
(cons 1 (cons override-default
(cl-delete "o" extra-actions
:key #'car :test #'equal))))
((not extra-actions)
action)
((functionp action)
`(1
("o" ,action "default")
,@extra-actions))
((null action)
`(1
("o" identity "default")
,@extra-actions))
(t
(cons (car action)
(cl-delete-duplicates (cdr (append action extra-actions))
:key #'car :test #'equal :from-end t))))))
(defvar ivy--prompts-list nil)
(defun ivy-set-prompt (caller prompt-fn)
"Associate CALLER with PROMPT-FN.
PROMPT-FN is a function of no arguments that returns a prompt string."
(setq ivy--prompts-list
(plist-put ivy--prompts-list caller prompt-fn)))
(defvar ivy--display-transformers-alist nil
"A list of str->str transformers per command.")
(defun ivy-set-display-transformer (cmd transformer)
"Set CMD a displayed candidate TRANSFORMER.
It's a lambda that takes a string one of the candidates in the
collection and returns a string for display, the same candidate
plus some extra information.
This lambda is called only on the `ivy-height' candidates that
are about to be displayed, not on the whole collection."
(declare (obsolete "use `ivy-configure' :display-transformer-fn instead."
"0.13.2 (2020-05-20)"))
(ivy--alist-set 'ivy--display-transformers-alist cmd transformer))
(defvar ivy--sources-list nil
"A list of extra sources per command.")
(defun ivy-set-sources (cmd sources)
"Attach to CMD a list of extra SOURCES.
Each static source is a function that takes no argument and
returns a list of strings.
The (original-source) determines the position of the original
dynamic source.
Extra dynamic sources aren't supported yet.
Example:
(defun small-recentf ()
(cl-subseq recentf-list 0 20))
(ivy-set-sources
\\='counsel-locate
\\='((small-recentf)
(original-source)))"
(setq ivy--sources-list
(plist-put ivy--sources-list cmd sources)))
(defun ivy--compute-extra-candidates (caller)
(let ((extra-sources (or (plist-get ivy--sources-list caller)
'((original-source))))
(result nil))
(dolist (source extra-sources)
(cond ((equal source '(original-source))
(push source result))
((null (cdr source))
(push (list (car source) (funcall (car source))) result))))
result))
(defvar ivy-current-prefix-arg nil
"Prefix arg to pass to actions.
This is a global variable that is set by ivy functions for use in
action functions.")
;;* Keymap
(require 'delsel)
(defun ivy-define-key (keymap key def)
"Forward to (`define-key' KEYMAP KEY DEF).
Remove DEF from `counsel-M-x' list."
(put def 'no-counsel-M-x t)
(define-key keymap key def))
(defvar ivy-minibuffer-map
(let ((map (make-sparse-keymap)))
(ivy-define-key map (kbd "C-m") 'ivy-done)
(define-key map [down-mouse-1] 'ignore)
(ivy-define-key map [mouse-1] 'ivy-mouse-done)
(ivy-define-key map [mouse-3] 'ivy-mouse-dispatching-done)
(ivy-define-key map (kbd "C-M-m") 'ivy-call)
(ivy-define-key map (kbd "C-j") 'ivy-alt-done)
(ivy-define-key map (kbd "C-M-j") 'ivy-immediate-done)
(ivy-define-key map (kbd "TAB") 'ivy-partial-or-done)
(ivy-define-key map [remap next-line] 'ivy-next-line)
(ivy-define-key map [remap previous-line] 'ivy-previous-line)
(ivy-define-key map (kbd "C-r") 'ivy-reverse-i-search)
(define-key map (kbd "SPC") 'self-insert-command)
(ivy-define-key map [remap delete-backward-char] 'ivy-backward-delete-char)
(ivy-define-key map [remap backward-delete-char-untabify] 'ivy-backward-delete-char)
(ivy-define-key map [remap backward-kill-word] 'ivy-backward-kill-word)
(ivy-define-key map [remap delete-char] 'ivy-delete-char)
(ivy-define-key map [remap forward-char] 'ivy-forward-char)
(ivy-define-key map (kbd "<right>") 'ivy-forward-char)
(ivy-define-key map [remap kill-word] 'ivy-kill-word)
(ivy-define-key map [remap beginning-of-buffer] 'ivy-beginning-of-buffer)
(ivy-define-key map [remap end-of-buffer] 'ivy-end-of-buffer)
(ivy-define-key map (kbd "M-n") 'ivy-next-history-element)
(ivy-define-key map (kbd "M-p") 'ivy-previous-history-element)
(define-key map (kbd "C-g") 'minibuffer-keyboard-quit)
(ivy-define-key map [remap scroll-up-command] 'ivy-scroll-up-command)
(ivy-define-key map [remap scroll-down-command] 'ivy-scroll-down-command)
(ivy-define-key map (kbd "<next>") 'ivy-scroll-up-command)
(ivy-define-key map (kbd "<prior>") 'ivy-scroll-down-command)
(ivy-define-key map (kbd "C-v") 'ivy-scroll-up-command)
(ivy-define-key map (kbd "M-v") 'ivy-scroll-down-command)
(ivy-define-key map (kbd "C-M-n") 'ivy-next-line-and-call)
(ivy-define-key map (kbd "C-M-p") 'ivy-previous-line-and-call)
(ivy-define-key map (kbd "M-a") 'ivy-toggle-marks)
(ivy-define-key map (kbd "M-r") 'ivy-toggle-regexp-quote)
(ivy-define-key map (kbd "M-j") 'ivy-yank-word)
(ivy-define-key map (kbd "M-i") 'ivy-insert-current)
(ivy-define-key map (kbd "C-M-y") 'ivy-insert-current-full)
(ivy-define-key map (kbd "C-o") 'hydra-ivy/body)
(ivy-define-key map (kbd "M-o") 'ivy-dispatching-done)
(ivy-define-key map (kbd "C-M-o") 'ivy-dispatching-call)
(ivy-define-key map [remap kill-line] 'ivy-kill-line)
(ivy-define-key map [remap kill-whole-line] 'ivy-kill-whole-line)
(ivy-define-key map (kbd "S-SPC") 'ivy-restrict-to-matches)
(ivy-define-key map [remap kill-ring-save] 'ivy-kill-ring-save)
(ivy-define-key map (kbd "C-M-a") 'ivy-read-action)
(ivy-define-key map (kbd "C-c C-o") 'ivy-occur)
(ivy-define-key map (kbd "C-c C-a") 'ivy-toggle-ignore)
(ivy-define-key map (kbd "C-c C-s") 'ivy-rotate-sort)
(ivy-define-key map [remap describe-mode] 'ivy-help)
(ivy-define-key map "$" 'ivy-magic-read-file-env)
map)
"Keymap used in the minibuffer.")
(autoload 'hydra-ivy/body "ivy-hydra" "" t)
(autoload 'ivy-hydra-read-action "ivy-hydra" "" t)
(defvar ivy-mode-map
(let ((map (make-sparse-keymap)))
(ivy-define-key map [remap switch-to-buffer] 'ivy-switch-buffer)
(ivy-define-key map [remap switch-to-buffer-other-window] 'ivy-switch-buffer-other-window)
map)
"Keymap for `ivy-mode'.")
;;* Globals
(cl-defstruct ivy-state
prompt collection
predicate require-match initial-input
history preselect keymap update-fn sort
;; The frame in which `ivy-read' was called
frame
;; The window in which `ivy-read' was called
window
;; The buffer in which `ivy-read' was called
buffer
;; The value of `ivy-text' to be used by `ivy-occur'
text
action
unwind
re-builder
matcher
;; When this is non-nil, call it for each input change to get new candidates
dynamic-collection
;; A lambda that transforms candidates only for display
display-transformer-fn
directory
caller
current
def
ignore
multi-action
extra-props)
(defvar ivy-last (make-ivy-state)
"The last parameters passed to `ivy-read'.
This should eventually become a stack so that you could use
`ivy-read' recursively.")
(defvar ivy--sessions nil
"Alist mapping session symbols to `ivy-state' objects.")
(defvar ivy-recursive-last nil)
(defvar ivy-recursive-restore t
"When non-nil, restore the above state when exiting the minibuffer.
This variable is let-bound to nil by functions that take care of
the restoring themselves.")
(defsubst ivy-set-action (action)
"Set the current `ivy-last' field to ACTION."
(setf (ivy-state-action ivy-last) action))
(defvar inhibit-message)
(defvar ffap-machine-p-known)
(defun ivy-thing-at-point ()
"Return a string that corresponds to the current thing at point."
(substring-no-properties
(cond
((use-region-p)
(let* ((beg (region-beginning))
(end (region-end))
(eol (save-excursion (goto-char beg) (line-end-position))))
(buffer-substring-no-properties beg (min end eol))))
((let ((url (thing-at-point 'url)))
;; Work around `https://bugs.gnu.org/58091'.
(and (stringp url) url)))
((and (eq (ivy-state-collection ivy-last) #'read-file-name-internal)
(let ((inhibit-message t)
(ffap-machine-p-known 'reject))
(run-hook-with-args-until-success 'file-name-at-point-functions))))
((let ((s (thing-at-point 'symbol)))
(and (stringp s)
(if (string-match "\\`[`']?\\(.*?\\)'?\\'" s)
(match-string 1 s)
s))))
((looking-at "(+\\(\\(?:\\sw\\|\\s_\\)+\\)\\_>")
(match-string-no-properties 1))
(t
""))))
(defvar ivy-history nil
"History list of candidates entered in the minibuffer.
Maximum length of the history list is determined by the value
of `history-length'.")
(defvar ivy--directory nil
"Current directory when completing file names.")
(defvar ivy--directory-hist nil
"Store the history of directories.
This allows RET to reverse consecutive DEL.")
(defvar ivy--length 0
"Store the amount of viable candidates.")
(defvar ivy-text ""
"Store the user's string as it is typed in.")
(defvar ivy-regex ""
"Store the regex value that corresponds to `ivy-text'.")
(defvar ivy--regex-function 'ivy--regex
"Current function for building a regex.")
(defun ivy-set-text (str)
"Set `ivy-text' to STR."
(setq ivy-text str)
(setq ivy-regex (funcall ivy--regex-function ivy-text)))
(defvar ivy--index 0
"Store the index of the current candidate.")
(defvar ivy--window-index 0
"Store the index of the current candidate in the minibuffer window.
This means it's between 0 and `ivy-height'.")
(defvar ivy-exit nil
"Store `done' if the completion was successfully selected.
Otherwise, store nil.")
(defvar ivy--all-candidates nil
"Store the candidates passed to `ivy-read'.")
(defvar ivy--extra-candidates '((original-source))
"Store candidates added by the extra sources.
This is an internal-use alist. Each key is a function name, or
original-source (which represents where the current dynamic
candidates should go).
Each value is an evaluation of the function, in case of static
sources. These values will subsequently be filtered on `ivy-text'.
This variable is set by `ivy-read' and used by `ivy--set-candidates'.")
(defcustom ivy-use-ignore-default t
"The default policy for user-configured candidate filtering."
:type '(choice
(const :tag "Ignore ignored always" always)
(const :tag "Ignore ignored when others exist" t)
(const :tag "Don't ignore" nil)))
(defvar ivy-use-ignore t
"Store policy for user-configured candidate filtering.
This may be changed dynamically by `ivy-toggle-ignore'.
Use `ivy-use-ignore-default' for a permanent configuration.")
(defvar ivy--default nil
"Default initial input.")
(defvar ivy--prompt nil
"Store the format-style prompt.
When non-nil, it should contain at least one %d.")
(defvar ivy--prompt-extra ""
"Temporary modifications to the prompt.")
(defvar ivy--old-re nil
"Store the old regexp.
Either a string or a list for `ivy-re-match'.")
(defvar ivy--old-cands nil
"Store the candidates matched by `ivy--old-re'.")
(defvar ivy--highlight-function 'ivy--highlight-default
"Current function for formatting the candidates.")
(defvar ivy--subexps 0
"Number of groups in the current `ivy--regex'.")
(defvar ivy--full-length nil
"The total amount of candidates when :dynamic-collection is non-nil.")
(defvar ivy--old-text ""
"Store old `ivy-text' for dynamic completion.")
(defvar ivy--trying-to-resume-dynamic-collection nil
"Non-nil if resuming from a dynamic collection.
When non-nil, ivy will wait until the first chunk of asynchronous
candidates has been received before selecting the last
preselected candidate.")
(defun ivy--set-index-dynamic-collection ()
(when ivy--trying-to-resume-dynamic-collection
(let ((preselect-index
(ivy--preselect-index (ivy-state-preselect ivy-last) ivy--all-candidates)))
(when preselect-index
(ivy-set-index preselect-index)))
(setq ivy--trying-to-resume-dynamic-collection nil)))
(defcustom ivy-case-fold-search-default
(if search-upper-case
'auto
case-fold-search)
"The default value for `case-fold-search' in Ivy operations.
The special value `auto' means case folding is performed so long
as the entire input string comprises lower-case characters. This
corresponds to the default behaviour of most Emacs search
functionality, e.g. as seen in `isearch'."
:link '(info-link "(emacs)Lax Search")
:type '(choice
(const :tag "Auto" auto)
(const :tag "Always" t)
(const :tag "Never" nil)))
(defvar ivy-case-fold-search ivy-case-fold-search-default
"Store the current overriding `case-fold-search'.")
(defcustom ivy-more-chars-alist
'((t . 3))
"Map commands to their minimum required input length.
That is the number of characters prompted for before fetching
candidates. The special key t is used as a fallback."
:type '(alist :key-type symbol :value-type integer))
(defun ivy-more-chars ()
"Return two fake candidates prompting for at least N input.
N is obtained from `ivy-more-chars-alist'."
(let ((diff (- (ivy-alist-setting ivy-more-chars-alist)
(length ivy-text))))
(when (> diff 0)
(list "" (format "%d chars more" diff)))))
(defun ivy--case-fold-p (string)
"Return nil if STRING should be matched case-sensitively."
(if (eq ivy-case-fold-search 'auto)
(string= string (downcase string))
ivy-case-fold-search))
(defun ivy--case-fold-string= (s1 s2)
"Like `string=', but obeys `case-fold-search'."
(eq t (compare-strings s1 nil nil s2 nil nil case-fold-search)))
(defmacro ivy-quit-and-run (&rest body)
"Quit the minibuffer and run BODY afterwards."
(declare (indent 0))
`(progn
(put 'quit 'error-message "")
(run-at-time nil nil
(lambda ()
(put 'quit 'error-message "Quit")
(with-demoted-errors "Error: %S"
,@body)))
(abort-recursive-edit)))
(defun ivy-exit-with-action (action &optional exit-code)
"Quit the minibuffer and call ACTION afterwards."
(ivy-set-action
`(lambda (x)
(funcall ',action x)
(ivy-set-action ',(ivy-state-action ivy-last))))
(setq ivy-exit (or exit-code 'done))
(exit-minibuffer))
(defmacro with-ivy-window (&rest body)
"Execute BODY in the window from which `ivy-read' was called."
(declare (indent 0)
(debug t))
`(with-selected-window (ivy--get-window ivy-last)
,@body))
(defun ivy--expand-file-name (text)
(cond
((eq (ivy-state-history ivy-last) 'grep-files-history)
text)
(ivy--directory
(if (and (string-match-p "^/" text) (file-remote-p ivy--directory))
(let ((parts (split-string ivy--directory ":")))
(concat (nth 0 parts) ":" (nth 1 parts) ":" text))
(expand-file-name text ivy--directory)))
(t
text)))
(defun ivy--done (text)
"Insert TEXT and exit minibuffer."
(if (member (ivy-state-prompt ivy-last) '("Create directory: " "Make directory: "))
(ivy-immediate-done)
(when (stringp text)
(insert
(setf (ivy-state-current ivy-last)
(ivy--expand-file-name text))))
(setq ivy-exit 'done)
(exit-minibuffer)))
(defcustom ivy-use-selectable-prompt nil
"When non-nil, make the prompt line selectable like a candidate.
The prompt line can be selected by calling `ivy-previous-line' when the first
regular candidate is selected. Both actions `ivy-done' and `ivy-alt-done',
when called on a selected prompt, are forwarded to `ivy-immediate-done', which
results to the same as calling `ivy-immediate-done' explicitly when a regular
candidate is selected.
Note that if `ivy-wrap' is set to t, calling `ivy-previous-line' when the
prompt is selected wraps around to the last candidate, while calling
`ivy-next-line' on the last candidate wraps around to the first
candidate, not the prompt."
:type 'boolean)
(defvar ivy--use-selectable-prompt nil
"Store the effective `ivy-use-selectable-prompt' for current session.")
(defun ivy--prompt-selectable-p ()
"Return t if the prompt line is selectable."
(and ivy-use-selectable-prompt
(or (memq (ivy-state-require-match ivy-last)
'(nil confirm confirm-after-completion))
;; :require-match is t, but "" is in the collection
(let ((coll (ivy-state-collection ivy-last)))
(and (listp coll)
(if (consp (car coll))
(member '("") coll)
(member "" coll)))))))
(defun ivy--prompt-selected-p ()
"Return t if the prompt line is selected."
(and ivy--use-selectable-prompt
(= ivy--index -1)))
;;* Commands
(defun ivy-done ()
"Exit the minibuffer with the selected candidate."
(interactive)
(if (ivy--prompt-selected-p)
(ivy-immediate-done)
(setq ivy-current-prefix-arg current-prefix-arg)
(let ((require-match (ivy-state-require-match ivy-last))
(input (ivy--input)))
(delete-minibuffer-contents)
(cond ((and (= ivy--length 0)
(eq this-command 'ivy-dispatching-done))
(ivy--done ivy-text))
((or (> ivy--length 0)
;; the action from `ivy-dispatching-done' may not need a
;; candidate at all
(eq this-command 'ivy-dispatching-done))
(ivy--done (ivy-state-current ivy-last)))
((string= " (confirm)" ivy--prompt-extra)
(ivy--done ivy-text))
((or (and (memq (ivy-state-collection ivy-last)
'(read-file-name-internal internal-complete-buffer))
(eq confirm-nonexistent-file-or-buffer t))
(and (functionp require-match)
(setq require-match (funcall require-match))))
(setq ivy--prompt-extra " (confirm)")
(insert input)
(ivy--exhibit))
((memq require-match '(nil confirm confirm-after-completion))
(ivy--done ivy-text))
(t
(setq ivy--prompt-extra " (match required)")
(insert ivy-text)
(ivy--exhibit))))))
(defvar ivy-mouse-1-tooltip
"Exit the minibuffer with the selected candidate."
"The doc visible in the tooltip for mouse-1 binding in the minibuffer.")
(defvar ivy-mouse-3-tooltip
"Display alternative actions."
"The doc visible in the tooltip for mouse-3 binding in the minibuffer.")
(make-obsolete-variable 'ivy-mouse-1-tooltip 'ivy-mouse-1-help
"0.15.0 (2024-01-14)")
(make-obsolete-variable 'ivy-mouse-3-tooltip 'ivy-mouse-3-help
"0.15.0 (2024-01-14)")
(defvar ivy-mouse-1-help
(format (if (> emacs-major-version 28) "\\`%s': %s" "%s: %s")
"mouse-1" "Exit the minibuffer with the selected candidate")
"Tooltip doc for \\`mouse-1' binding in the minibuffer.")
(defvar ivy-mouse-3-help
(format (if (> emacs-major-version 28) "\\`%s': %s" "%s: %s")
"mouse-3" "Display alternative actions")
"Tooltip doc for \\`mouse-3' binding in the minibuffer.")
(defun ivy--help-echo (_win _obj _pos)
"Return a `help-echo' string for mouse bindings on minibuffer candidates."
(concat ivy-mouse-1-help (if tooltip-mode "\n" " ") ivy-mouse-3-help))
(defun ivy-mouse-offset (event)
"Compute the offset between the candidate at point and the selected one."
(if event
(let* ((line-number-at-point
(max 2
(line-number-at-pos (posn-point (event-start event)))))
(line-number-candidate ;; convert to 0 based index
(- line-number-at-point 2))
(offset
(- line-number-candidate
ivy--window-index)))
offset)
nil))
(defun ivy-mouse-done (event)
(interactive "@e")
(let ((offset (ivy-mouse-offset event)))
(when offset
(ivy-next-line offset)
(ivy--exhibit)
(ivy-alt-done))))
(defun ivy-mouse-dispatching-done (event)
(interactive "@e")
(let ((offset (ivy-mouse-offset event)))
(when offset
(ivy-next-line offset)
(ivy--exhibit)
(ivy-dispatching-done))))
(defcustom ivy-read-action-format-function 'ivy-read-action-format-default
"Function used to transform the actions list into a docstring."
:type '(radio
(function-item ivy-read-action-format-default)
(function-item ivy-read-action-format-columns)))
(defun ivy-read-action-format-default (actions)
"Create a docstring from ACTIONS.
ACTIONS is a list. Each list item is a list of 3 items:
key (a string), cmd and doc (a string)."
(format "%s\n%s\n"
(if (eq this-command 'ivy-read-action)
"Select action: "
(ivy-state-current ivy-last))
(mapconcat
(lambda (x)
(format "%s: %s"
(propertize
(car x)
'face 'ivy-action)
(nth 2 x)))
actions
"\n")))
(defun ivy-read-action-format-columns (actions)
"Create a potentially multi-column docstring from ACTIONS.
Several columns are used as needed to preserve `ivy-height'.
ACTIONS is a list with elements of the form (KEY COMMAND DOC),
where KEY and DOC are strings."
(let ((length (length actions))
(i 0)
(max-rows (- ivy-height 1))
rows cols col lwidth rwidth)
(while (< i length)
(setq col (cl-subseq actions i (min length (cl-incf i max-rows))))
(setq lwidth (apply 'max (mapcar (lambda (x)
(length (nth 0 x)))
col)))
(setq rwidth (apply 'max (mapcar (lambda (x)
(length (nth 2 x)))
col)))
(setq col (mapcar (lambda (x)
(format (format "%%%ds: %%-%ds" lwidth rwidth)
(propertize (car x) 'face 'ivy-action)
(nth 2 x)))
col))
(cond
((null rows)
(setq rows (length col)))
((< (length col) rows)
(setq col (append col (make-list (- rows (length col)) "")))))
(push col cols))
(format "%s\n%s\n"
(if (eq this-command 'ivy-read-action)
"Select action: "
(ivy-state-current ivy-last))
(mapconcat 'identity
(apply 'cl-mapcar
(lambda (&rest args)
(mapconcat 'identity args " | "))
(nreverse cols))
"\n"))))
(defcustom ivy-read-action-function #'ivy-read-action-by-key
"Function used to read an action."
:type '(radio
(function-item ivy-read-action-by-key)
(function-item ivy-read-action-ivy)
(function-item ivy-hydra-read-action)))
(defun ivy-read-action ()
"Change the action to one of the available ones.
Return nil for `minibuffer-keyboard-quit' or wrong key during the
selection, non-nil otherwise."
(interactive)
(let ((actions (ivy-state-action ivy-last)))
(if (not (ivy--actionp actions))
t
(let ((ivy--directory ivy--directory))
(funcall ivy-read-action-function actions)))))
(defvar set-message-function)
(defun ivy-read-action-by-key (actions)
(let* ((set-message-function nil)
(hint (funcall ivy-read-action-format-function (cdr actions)))
(resize-mini-windows t)
(key "")
action-idx)
(while (and (setq action-idx (cl-position-if
(lambda (x)
(string-prefix-p key (car x)))
(cdr actions)))
(not (string= key (car (nth action-idx (cdr actions))))))
(setq key (concat key (key-description (vector (read-key hint))))))
;; Ignore resize errors with minibuffer-only frames (#2726).
(ignore-errors (ivy-shrink-after-dispatching))
(cond ((member key '("ESC" "C-g" "M-o"))
nil)
((null action-idx)
(message "%s is not bound" key)
nil)
(t
(message "")
(setcar actions (1+ action-idx))
(ivy-set-action actions)))))
(defvar ivy-marked-candidates nil
"List of marked candidates.
Use `ivy-mark' to populate this.
When this list is non-nil at the end of the session, the action
will be called for each element of this list.")
(defun ivy-read-action-ivy (actions)
"Select an action from ACTIONS using Ivy."
(let ((enable-recursive-minibuffers t))
(if (and (> (minibuffer-depth) 1)
(eq (ivy-state-caller ivy-last) 'ivy-read-action-ivy))
(minibuffer-keyboard-quit)
(let ((ivy-marked-candidates ivy-marked-candidates))
(ivy-read (format "action (%s): " (ivy-state-current ivy-last))
(cl-mapcar
(lambda (a i) (cons (format "[%s] %s" (nth 0 a) (nth 2 a)) i))
(cdr actions) (number-sequence 1 (length (cdr actions))))
:action (lambda (a)
(setcar actions (cdr a))
(ivy-set-action actions))
:caller 'ivy-read-action-ivy)))))
(defun ivy-shrink-after-dispatching ()
"Shrink the window after dispatching when action list is too large."
(when (window-minibuffer-p)
(window-resize nil (- ivy-height (window-height)))))
(defun ivy-dispatching-done ()
"Select one of the available actions and call `ivy-done'."
(interactive)
(let ((ivy-exit 'ivy-dispatching-done))
(when (ivy-read-action)
(ivy-done)))
(ivy-shrink-after-dispatching))
(defun ivy-dispatching-call ()
"Select one of the available actions and call `ivy-call'."
(interactive)
(setq ivy-current-prefix-arg current-prefix-arg)
(let ((actions (copy-sequence (ivy-state-action ivy-last)))
(old-ivy-text ivy-text))
(unwind-protect
(when (ivy-read-action)
(ivy-set-text old-ivy-text)
(ivy-call))
(ivy-set-action actions)))
(ivy-shrink-after-dispatching))
(defun ivy-build-tramp-name (x)
"Reconstruct X into a path.
Is is a cons cell, related to `tramp-get-completion-function'."
(let ((user (car x))
(domain (cadr x)))
(if user
(concat user "@" domain)
domain)))
(declare-function Info-find-node "info")
(declare-function Info-read-node-name-1 "info")
(declare-function tramp-get-completion-function "tramp")
(defcustom ivy-alt-done-functions-alist nil
"Customize what `ivy-alt-done' does per-collection."
:type '(alist :key-type symbol :value-type function))
(defun ivy--completing-fname-p ()
(let ((meta (ignore-errors
(funcall (ivy-state-collection ivy-last) ivy-text nil 'metadata))))
(and (consp meta)
(eq 'file (cdr (assoc 'category meta))))))
(defun ivy-alt-done (&optional arg)
"Exit the minibuffer with the selected candidate.
When ARG is t, exit with current text, ignoring the candidates.
When the current candidate during file name completion is a
directory, continue completion from within that directory instead
of exiting. This function is otherwise like `ivy-done'."
(interactive "P")
(setq ivy-current-prefix-arg current-prefix-arg)
(let (alt-done-fn)
(cond ((or arg (ivy--prompt-selected-p))
(ivy-immediate-done))
((setq alt-done-fn (ivy-alist-setting ivy-alt-done-functions-alist))
(funcall alt-done-fn))
((ivy--completing-fname-p)
(ivy--directory-done))
(t
(ivy-done)))))
(defun ivy--info-alt-done ()
(if (member (ivy-state-current ivy-last) '("(./)" "(../)"))
(ivy-quit-and-run
(ivy-read "Go to file: " #'read-file-name-internal