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consult.el
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;;; consult.el --- Consulting completing-read -*- lexical-binding: t -*-
;; Copyright (C) 2021 Free Software Foundation, Inc.
;; Author: Daniel Mendler and Consult contributors
;; Maintainer: Daniel Mendler <mail@daniel-mendler.de>
;; Created: 2020
;; Version: 0.13
;; Package-Requires: ((emacs "26.1"))
;; Homepage: https://github.com/minad/consult
;; This file is part of GNU Emacs.
;; 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:
;; Consult implements a set of `consult-<thing>' commands which use
;; `completing-read' to select from a list of candidates. Consult provides an
;; enhanced buffer switcher `consult-buffer' and search and navigation commands
;; like `consult-imenu' and `consult-line'. Searching through multiple files is
;; supported by the asynchronous `consult-grep' command. Many Consult commands
;; allow previewing candidates - if a candidate is selected in the completion
;; view, the buffer shows the candidate immediately.
;; The Consult commands are compatible with completion systems based
;; on the Emacs `completing-read' API, including the default completion
;; system, Vertico, Icomplete, Mct, Selectrum and Embark.
;; Consult has been inspired by Counsel. Some of the Consult commands
;; originated in the Counsel package or the Selectrum wiki. See the
;; README for a full list of contributors.
;;; Code:
(eval-when-compile
(require 'cl-lib)
(require 'subr-x))
(require 'bookmark)
(require 'kmacro)
(require 'recentf)
(require 'seq)
(defgroup consult nil
"Consulting `completing-read'."
:group 'convenience
:group 'minibuffer
:prefix "consult-")
;;;; Customization
(defcustom consult-narrow-key nil
"Prefix key for narrowing during completion.
Good choices for this key are (kbd \"<\") or (kbd \"C-+\") for example.
The key must be either a string or a vector.
This is the key representation accepted by `define-key'."
:type '(choice key-sequence (const nil)))
(defcustom consult-widen-key nil
"Key used for widening during completion.
If this key is unset, defaults to twice the `consult-narrow-key'.
The key must be either a string or a vector.
This is the key representation accepted by `define-key'."
:type '(choice key-sequence (const nil)))
(defcustom consult-project-root-function nil
"Function which returns project root directory.
The root directory is used by `consult-buffer' and `consult-grep'."
:type '(choice function (const nil)))
(defcustom consult-async-refresh-delay 0.2
"Refreshing delay of the completion ui for asynchronous commands.
The completion ui is only updated every `consult-async-refresh-delay'
seconds. This applies to asynchronous commands like for example
`consult-grep'."
:type 'float)
(defcustom consult-async-input-throttle 0.4
"Input throttle for asynchronous commands.
The asynchronous process is started only every
`consult-async-input-throttle' seconds. This applies to asynchronous
commands, e.g., `consult-grep'."
:type 'float)
(defcustom consult-async-input-debounce 0.2
"Input debounce for asynchronous commands.
The asynchronous process is started only when there has not been new
input for `consult-async-input-debounce' seconds. This applies to
asynchronous commands, e.g., `consult-grep'."
:type 'float)
(defcustom consult-async-min-input 3
"Minimum number of letters needed, before asynchronous process is called.
This applies to asynchronous commands, e.g., `consult-grep'."
:type 'integer)
(defcustom consult-async-split-style 'perl
"Async splitting style, see `consult-async-split-styles-alist'."
:type '(choice (const :tag "No splitting" nil)
(const :tag "Comma" comma)
(const :tag "Semicolon" semicolon)
(const :tag "Perl" perl)))
(defcustom consult-async-split-styles-alist
'((nil :type nil)
(comma :separator ?, :type separator)
(semicolon :separator ?\; :type separator)
(perl :initial "#" :type perl))
"Async splitting styles."
:type '(alist :key-type symbol :value-type plist))
(defcustom consult-mode-histories
'((eshell-mode . eshell-history-ring)
(comint-mode . comint-input-ring)
(term-mode . term-input-ring))
"Alist of (mode . history) pairs of mode histories.
The histories can be rings or lists."
:type '(alist :key-type symbol :value-type symbol))
(defcustom consult-themes nil
"List of themes to be presented for selection.
nil shows all `custom-available-themes'."
:type '(repeat symbol))
(defcustom consult-after-jump-hook '(recenter)
"Function called after jumping to a location.
Commonly used functions for this hook are `recenter' and `reposition-window'.
This is called during preview and for the jump after selection."
:type 'hook)
(defcustom consult-line-start-from-top nil
"Start search from the top if non-nil.
Otherwise start the search at the current line and wrap around."
:type 'boolean)
(defcustom consult-line-point-placement 'match-beginning
"Where to leave point after `consult-line' jumps to a match."
:type '(choice (const :tag "Beginning of the line" line-beginning)
(const :tag "Beginning of the match" match-beginning)
(const :tag "End of the match" match-end)))
(defcustom consult-line-numbers-widen t
"Show absolute line numbers when narrowing is active.
See also `display-line-numbers-widen'."
:type 'boolean)
(defcustom consult-goto-line-numbers t
"Show line numbers for `consult-goto-line'."
:type 'boolean)
(defcustom consult-fontify-preserve t
"Preserve fontification for line-based commands."
:type 'boolean)
(defcustom consult-fontify-max-size 1048576
"Buffers larger than this byte limit are not fontified.
This is necessary in order to prevent a large startup time
for navigation commands like `consult-line'."
:type 'integer)
(defcustom consult-buffer-filter
'("\\` "
"\\`\\*Completions\\*\\'"
"\\`\\*Flymake log\\*\\'"
"\\`\\*Semantic SymRef\\*\\'"
"\\`\\*tramp/.*\\*\\'")
"Filter regexps for `consult-buffer'.
The default setting is to filter ephemeral buffer names beginning with a space
character, the *Completions* buffer and a few log buffers."
:type '(repeat regexp))
(defcustom consult-recent-file-filter nil
"Filter regexps for `consult-recent-file'."
:type '(repeat regexp))
(defcustom consult-buffer-sources
'(consult--source-hidden-buffer
consult--source-buffer
consult--source-recent-file
consult--source-bookmark
consult--source-project-buffer
consult--source-project-recent-file)
"Sources used by `consult-buffer'.
See `consult--multi' for a description of the source values."
:type '(repeat symbol))
(defcustom consult-mode-command-filter
'(;; Filter commands
"-mode\\'" "--"
;; Filter whole features
simple mwheel time so-long recentf)
"Filter commands for `consult-mode-command'."
:type '(repeat (choice symbol regexp)))
(defcustom consult-grep-max-columns 300
"Maximal number of columns of grep output."
:type 'integer)
(defconst consult--grep-match-regexp
"\\`\\(?:\\./\\)?\\([^\n\0]+\\)\0\\([0-9]+\\)\\([-:\0]\\)"
"Regexp used to match file and line of grep output.")
(defcustom consult-grep-args
"grep --null --line-buffered --color=never --ignore-case\
--exclude-dir=.git --line-number -I -r ."
"Command line arguments for grep, see `consult-grep'.
The dynamically computed arguments are appended."
:type 'string)
(defcustom consult-git-grep-args
"git --no-pager grep --null --color=never --ignore-case\
--extended-regexp --line-number -I"
"Command line arguments for git-grep, see `consult-git-grep'.
The dynamically computed arguments are appended."
:type 'string)
(defcustom consult-ripgrep-args
"rg --null --line-buffered --color=never --max-columns=1000 --path-separator /\
--smart-case --no-heading --line-number ."
"Command line arguments for ripgrep, see `consult-ripgrep'.
The dynamically computed arguments are appended."
:type 'string)
(defcustom consult-find-args
"find . -not ( -wholename */.* -prune )"
"Command line arguments for find, see `consult-find'.
The dynamically computed arguments are appended."
:type 'string)
(defcustom consult-locate-args
"locate --ignore-case --existing --regexp"
"Command line arguments for locate, see `consult-locate'.
The dynamically computed arguments are appended."
:type 'string)
(defcustom consult-man-args
"man -k"
"Command line arguments for man, see `consult-man'.
The dynamically computed arguments are appended."
:type 'string)
(defcustom consult-preview-key 'any
"Preview trigger keys, can be nil, 'any, a single key or a list of keys."
:type '(choice (const :tag "Any key" any)
(list :tag "Debounced" (const :debounce) (float :tag "Seconds" 0.1) (const any))
(const :tag "No preview" nil)
(key-sequence :tag "Key")
(repeat :tag "List of keys" key-sequence)))
(defcustom consult-preview-max-size 10485760
"Files larger than this byte limit are not previewed."
:type 'integer)
(defcustom consult-preview-raw-size 102400
"Files larger than this byte limit are previewed in raw form."
:type 'integer)
(defcustom consult-preview-max-count 10
"Number of files to keep open at once during preview."
:type 'integer)
(defcustom consult-preview-excluded-hooks
'(epa-file-find-file-hook
recentf-track-opened-file
vc-refresh-state)
"List of `find-file' hooks, which should not be executed during file preview.
In particular we don't want to modify the list of recent files and we
don't want to see epa password prompts."
:type '(repeat symbol))
(defcustom consult-bookmark-narrow
`((?f "File" ,#'bookmark-default-handler)
(?h "Help" ,#'help-bookmark-jump)
(?i "Info" ,#'Info-bookmark-jump)
(?p "Picture" ,#'image-bookmark-jump)
(?d "Docview" ,#'doc-view-bookmark-jump)
(?m "Man" ,#'Man-bookmark-jump)
(?w "Woman" ,#'woman-bookmark-jump)
(?g "Gnus" ,#'gnus-summary-bookmark-jump))
"Bookmark narrowing configuration.
Each element of the list must have the form '(char name handler)."
:type '(repeat (list character string function)))
(defcustom consult-crm-prefix
(cons " " (propertize "✓ " 'face 'success))
"Prefix for `consult-completing-read-multiple' candidates."
:type '(cons (string :tag "Not selected") (string :tag "Selected")))
;;;; Faces
(defgroup consult-faces nil
"Faces used by Consult."
:group 'consult
:group 'faces)
(defface consult-preview-line
'((t :inherit consult-preview-insertion :extend t))
"Face used to for line previews.")
(defface consult-preview-match
'((t :inherit match))
"Face used to for match previews in `consult-grep'.")
(defface consult-preview-cursor
'((t :inherit consult-preview-match))
"Face used to for cursor previews and marks in `consult-mark'.")
(defface consult-preview-error
'((t :inherit isearch-fail))
"Face used to for cursor previews and marks in `consult-compile-error'.")
(defface consult-preview-insertion
'((t :inherit region))
"Face used to for previews of text to be inserted.
Used by `consult-completion-in-region', `consult-yank' and `consult-history'.")
(defface consult-narrow-indicator
'((t :inherit warning))
"Face used for the narrowing indicator.")
(defface consult-async-running
'((t :inherit consult-narrow-indicator))
"Face used if asynchronous process is running.")
(defface consult-async-finished
'((t :inherit success))
"Face used if asynchronous process has finished.")
(defface consult-async-failed
'((t :inherit error))
"Face used if asynchronous process has failed.")
(defface consult-async-split
'((t :inherit font-lock-negation-char-face))
"Face used to highlight punctuation character.")
(defface consult-help
'((t :inherit shadow))
"Face used to highlight help, e.g., in `consult-register-store'.")
(defface consult-key
'((t :inherit font-lock-keyword-face))
"Face used to highlight keys, e.g., in `consult-register'.")
(defface consult-line-number
'((t :inherit consult-key))
"Face used to highlight location line in `consult-global-mark'.")
(defface consult-file
'((t :inherit font-lock-function-name-face))
"Face used to highlight files in `consult-buffer'.")
(defface consult-grep-context
'((t :inherit shadow))
"Face used to highlight grep context in `consult-grep'.")
(defface consult-bookmark
'((t :inherit font-lock-constant-face))
"Face used to highlight bookmarks in `consult-buffer'.")
(defface consult-buffer
'((t))
"Face used to highlight buffers in `consult-buffer'.")
(defface consult-crm-selected
'((t :inherit secondary-selection))
"Face used to highlight selected items in `consult-completing-read-multiple'.")
(defface consult-line-number-prefix
'((t :inherit line-number))
"Face used to highlight line number prefixes.")
(defface consult-line-number-wrapped
'((t :inherit consult-line-number-prefix :inherit font-lock-warning-face))
"Face used to highlight line number prefixes, if the line number wrapped around.")
(defface consult-separator
'((((class color) (min-colors 88) (background light))
:foreground "#ccc")
(((class color) (min-colors 88) (background dark))
:foreground "#333"))
"Face used for thin line separators in `consult-register-window'.")
;;;; History variables
(defvar consult--keep-lines-history nil)
(defvar consult--grep-history nil)
(defvar consult--find-history nil)
(defvar consult--man-history nil)
(defvar consult--line-history nil)
(defvar consult--apropos-history nil)
(defvar consult--theme-history nil)
(defvar consult--minor-mode-menu-history nil)
(defvar consult--mode-command-history nil)
(defvar consult--kmacro-history nil)
(defvar consult--buffer-history nil)
(defvar consult--crm-history nil)
;;;; Internal variables
(defvar consult--regexp-compiler
#'consult--default-regexp-compiler
"Regular expression compiler used by `consult-grep' and other commands.
The function must return a list of regular expressions and a highlighter
function.")
(defvar consult--read-config nil
"Command configuration alist for fine-grained configuration.
Each element of the list must have the form (command-name plist...). The options
set here will be passed to `consult--read', when called from the corresponding
command. Note that the options depend on the private `consult--read' API and
should not be considered as stable as the public API.")
(defvar consult--buffer-display #'switch-to-buffer
"Buffer display function.")
(defvar consult--completion-candidate-hook
(list #'consult--default-completion-mb-candidate
#'consult--default-completion-list-candidate)
"Get candidate from completion system.")
(defvar consult--completion-refresh-hook nil
"Refresh completion system.")
(defvar-local consult--preview-function nil
"Minibuffer-local variable which exposes the current preview function.
This function can be called by custom completion systems from
outside the minibuffer.")
(defconst consult--tofu-char #x100000
"Special character used to encode line prefixes for disambiguation.
We use the first character of the private unicode plane b.")
(defconst consult--tofu-range #xFFFE
"Special character range.
Size of private unicode plane b.")
(defvar-local consult--narrow nil
"Current narrowing key.")
(defvar-local consult--narrow-keys nil
"Narrowing prefixes of the current completion.")
(defvar-local consult--narrow-predicate nil
"Narrowing predicate of the current completion.")
(defvar-local consult--narrow-overlay nil
"Narrowing indicator overlay.")
(defvar consult--gc-threshold (* 64 1024 1024)
"Large gc threshold for temporary increase.")
(defvar consult--gc-percentage 0.5
"Large gc percentage for temporary increase.")
(defvar consult--process-chunk (* 1024 1024)
"Increase process output chunk size.")
(defvar consult--async-log
" *consult-async*"
"Buffer for async logging output used by `consult--async-process'.")
(defvar-local consult--focus-lines-overlays nil
"Overlays used by `consult-focus-lines'.")
;;;; Customization helper
(defun consult--customize-set (cmds prop val)
"Set property PROP to VAL of commands CMDS."
(dolist (cmd cmds)
(cond
((and (boundp cmd) (consp (symbol-value cmd)))
(set cmd (plist-put (symbol-value cmd) prop val)))
((functionp cmd)
(setf (alist-get cmd consult--read-config)
(plist-put (alist-get cmd consult--read-config) prop val)))
(t (user-error "%s is neither a Consult command nor a Consult source"
cmd))))
nil)
(defmacro consult-customize (&rest args)
"Set properties of commands or sources.
ARGS is a list of commands or sources followed by the list of keyword-value
pairs."
(let ((setter))
(while args
(let ((cmds (seq-take-while (lambda (x) (not (keywordp x))) args)))
(setq args (seq-drop-while (lambda (x) (not (keywordp x))) args))
(while (keywordp (car args))
(push `(consult--customize-set ',cmds ,(car args) ,(cadr args)) setter)
(setq args (cddr args)))))
(macroexp-progn setter)))
;;;; Helper functions and macros
(defun consult--command-split (str)
"Return command argument and options list given input STR."
(save-match-data
(let ((opts (when (string-match " +--\\( +\\|\\'\\)" str)
(prog1 (substring str (match-end 0))
(setq str (substring str 0 (match-beginning 0)))))))
;; split-string-and-unquote fails if the quotes are invalid. Ignore it.
(cons str (and opts (ignore-errors (split-string-and-unquote opts)))))))
(defun consult--highlight-regexps (regexps str)
"Highlight REGEXPS in STR.
If a regular expression contains capturing groups, only these are highlighted.
If no capturing groups are used highlight the whole match."
(dolist (re regexps)
(when (string-match re str)
;; Unfortunately there is no way to avoid the allocation of the match
;; data, since the number of capturing groups is unknown.
(let ((m (match-data)))
(setq m (or (cddr m) m))
(while m
(when (car m)
(add-face-text-property (car m) (cadr m)
'consult-preview-match nil str))
(setq m (cddr m)))))))
(defconst consult--convert-regexp-table
(append
;; For simplicity, treat word beginning/end as word boundaries,
;; since PCRE does not make this distinction. Usually the
;; context determines if \b is the beginning or the end.
'(("\\<" . "\\b") ("\\>" . "\\b")
("\\_<" . "\\b") ("\\_>" . "\\b"))
;; Treat \` and \' as beginning and end of line. This is more
;; widely supported and makes sense for line-based commands.
'(("\\`" . "^") ("\\'" . "$"))
;; Historical: Unescaped *, +, ? are supported at the beginning
(mapcan (lambda (x)
(mapcar (lambda (y)
(cons (concat x y)
(concat (string-remove-prefix "\\" x) "\\" y)))
'("*" "+" "?")))
'("" "\\(" "\\(?:" "\\|" "^"))
;; Different escaping
(mapcan (lambda (x) `(,x (,(cdr x) . ,(car x))))
'(("\\|" . "|")
("\\(" . "(") ("\\)" . ")")
("\\{" . "{") ("\\}" . "}"))))
"Regexp conversion table.")
(defun consult--convert-regexp (regexp type)
"Convert Emacs REGEXP to regexp syntax TYPE."
(if (memq type '(emacs basic))
regexp
;; Support for Emacs regular expressions is fairly complete for basic
;; usage. There are a few unsupported Emacs regexp features:
;; - \= point matching
;; - Syntax classes \sx \Sx
;; - Character classes \cx \Cx
;; - Explicitly numbered groups (?3:group)
(replace-regexp-in-string
(rx (or "\\\\" "\\^" ;; Pass through
(seq (or "\\(?:" "\\|") (any "*+?")) ;; Historical: \|+ or \(?:* etc
(seq "\\(" (any "*+")) ;; Historical: \(* or \(+
(seq (or bos "^") (any "*+?")) ;; Historical: + or * at the beginning
(seq (opt "\\") (any "(){|}")) ;; Escape parens/braces/pipe
(seq "\\" (any "'<>`")) ;; Special escapes
(seq "\\_" (any "<>")))) ;; Beginning or end of symbol
(lambda (x) (or (cdr (assoc x consult--convert-regexp-table)) x))
regexp 'fixedcase 'literal)))
(defun consult--default-regexp-compiler (input type)
"Compile the INPUT string to a list of regular expressions.
The function should return a pair, the list of regular expressions and a
highlight function. The highlight function should take a single argument, the
string to highlight given the INPUT. TYPE is the desired type of regular
expression, which can be `basic', `extended', `emacs' or `pcre'."
(setq input (consult--split-escaped input))
(cons (mapcar (lambda (x) (consult--convert-regexp x type)) input)
(when-let (regexps (seq-filter #'consult--valid-regexp-p input))
(lambda (str)
(consult--highlight-regexps regexps str)))))
(defun consult--split-escaped (str)
"Split STR at spaces, which can be escaped with backslash."
(mapcar
(lambda (x) (replace-regexp-in-string (string 0) " " x))
(split-string (replace-regexp-in-string
"\\\\\\\\\\|\\\\ "
(lambda (x) (if (equal x "\\ ") (string 0) x))
str 'fixedcase 'literal)
" +" t)))
(defun consult--join-regexps (regexps type)
"Join REGEXPS of TYPE."
;; Add lookahead wrapper only if there is more than one regular expression
(cond
((and (eq type 'pcre) (cdr regexps))
(concat "^" (mapconcat (lambda (x) (format "(?=.*%s)" x))
regexps "")))
((eq type 'basic)
(string-join regexps ".*"))
(t
(when (> (length regexps) 3)
(message "Too many regexps, %S ignored. Use post-filtering!"
(string-join (seq-drop regexps 3) " "))
(setq regexps (seq-take regexps 3)))
(consult--regexp-join-permutations regexps
(and (memq type '(basic emacs)) "\\")))))
(defun consult--regexp-join-permutations (regexps esc)
"Join all permutations of REGEXPS.
ESC is the escaping string for choice and groups."
(pcase regexps
('nil "")
(`(,r) r)
(`(,r1 ,r2) (concat r1 ".*" r2 esc "|" r2 ".*" r1))
(_ (mapconcat
(lambda (r)
(concat r ".*" esc "("
(consult--regexp-join-permutations (remove r regexps) esc)
esc ")"))
regexps (concat esc "|")))))
(defun consult--valid-regexp-p (re)
"Return t if regexp RE is valid."
(condition-case nil
(progn (string-match-p re "") t)
(invalid-regexp nil)))
(defun consult--regexp-filter (regexps)
"Create filter regexp from REGEXPS."
(if (stringp regexps)
regexps
(mapconcat (lambda (x) (concat "\\(?:" x "\\)")) regexps "\\|")))
(defmacro consult--keep! (list form)
"Evaluate FORM for every element of LIST and keep the non-nil results."
(declare (indent 1))
(let ((head (make-symbol "head"))
(prev (make-symbol "prev"))
(result (make-symbol "result")))
`(let* ((,head (cons nil ,list))
(,prev ,head))
(while (cdr ,prev)
(if-let (,result (let ((it (cadr ,prev))) ,form))
(progn
(pop ,prev)
(setcar ,prev ,result))
(setcdr ,prev (cddr ,prev))))
(setq ,list (cdr ,head))
nil)))
;; Upstream bug#46326, Consult issue https://github.com/minad/consult/issues/193
(defmacro consult--minibuffer-with-setup-hook (fun &rest body)
"Variant of `minibuffer-with-setup-hook' using a symbol and `fset'.
This macro is only needed to prevent memory leaking issues with
the upstream `minibuffer-with-setup-hook' macro.
FUN is the hook function and BODY opens the minibuffer."
(declare (indent 1) (debug t))
(let ((hook (make-symbol "hook"))
(append))
(when (eq (car-safe fun) :append)
(setq append '(t) fun (cadr fun)))
`(let ((,hook (make-symbol "consult--minibuffer-setup")))
(fset ,hook (lambda ()
(remove-hook 'minibuffer-setup-hook ,hook)
(funcall ,fun)))
(unwind-protect
(progn
(add-hook 'minibuffer-setup-hook ,hook ,@append)
,@body)
(remove-hook 'minibuffer-setup-hook ,hook)))))
(defun consult--completion-filter (pattern cands category _highlight)
"Filter CANDS with PATTERN.
CATEGORY is the completion category, used to find the completion style via
`completion-category-defaults' and `completion-category-overrides'.
HIGHLIGHT must be non-nil if the resulting strings should be highlighted."
;; completion-all-completions returns an improper list
;; where the last link is not necessarily nil.
(nconc (completion-all-completions pattern cands nil (length pattern)
`(metadata (category . ,category)))
nil))
(defun consult--completion-filter-complement (pattern cands category _highlight)
"Filter CANDS with complement of PATTERN.
See `consult--completion-filter' for the arguments CATEGORY and HIGHLIGHT."
(let ((ht (consult--string-hash (consult--completion-filter pattern cands category nil))))
(seq-remove (lambda (x) (gethash x ht)) cands)))
(defun consult--completion-filter-dispatch (pattern cands category highlight)
"Filter CANDS with PATTERN with optional complement.
Either using `consult--completion-filter' or
`consult--completion-filter-complement', depending on if the pattern starts
with a bang. See `consult--completion-filter' for the arguments CATEGORY and
HIGHLIGHT."
(cond
((string-match-p "\\`!? ?\\'" pattern) cands) ;; empty pattern
((string-prefix-p "! " pattern) (consult--completion-filter-complement
(substring pattern 2) cands category nil))
(t (consult--completion-filter pattern cands category highlight))))
(defmacro consult--each-line (beg end &rest body)
"Iterate over each line.
The line beginning/ending BEG/END is bound in BODY."
(declare (indent 2))
(let ((max (make-symbol "max")))
`(save-excursion
(let ((,beg (point-min)) (,max (point-max)) end)
(while (< ,beg ,max)
(goto-char ,beg)
(setq ,end (line-end-position))
,@body
(setq ,beg (1+ ,end)))))))
(defmacro consult--static-if (cond then &rest else)
"If COND yields non-nil at compile time, do THEN, else do ELSE."
(declare (indent 2))
(if (eval cond 'lexical) then (macroexp-progn else)))
(defun consult--display-width (string)
"Compute width of STRING taking display and invisible properties into account."
(let ((pos 0) (width 0) (end (length string)))
(while (< pos end)
(let ((nextd (next-single-property-change pos 'display string end))
(display (get-text-property pos 'display string)))
(if (stringp display)
(setq width (+ width (string-width display))
pos nextd)
(while (< pos nextd)
(let ((nexti (next-single-property-change pos 'invisible string nextd)))
(unless (get-text-property pos 'invisible string)
(setq width (+ width
;; bug#47712: Emacs 28 can compute `string-width' of substrings
(consult--static-if (eq 3 (cdr (func-arity #'string-width)))
(string-width string pos nexti)
(string-width
;; Avoid allocation for the full string.
(if (and (= pos 0) (= nexti end))
string
(substring-no-properties string pos nexti)))))))
(setq pos nexti))))))
width))
(defun consult--string-hash (strings)
"Create hashtable from STRINGS."
(let ((ht (make-hash-table :test #'equal :size (length strings))))
(dolist (str strings)
(puthash str t ht))
ht))
(defmacro consult--local-let (binds &rest body)
"Buffer local let BINDS of dynamic variables in BODY."
(declare (indent 1))
(let ((buffer (make-symbol "buffer"))
(local (mapcar (lambda (x) (cons (make-symbol "local") (car x))) binds)))
`(let ((,buffer (current-buffer))
,@(mapcar (lambda (x) `(,(car x) (local-variable-p ',(cdr x)))) local))
(unwind-protect
(progn
,@(mapcar (lambda (x) `(make-local-variable ',(car x))) binds)
(let (,@binds)
,@body))
(when (buffer-live-p ,buffer)
(with-current-buffer ,buffer
,@(mapcar (lambda (x)
`(unless ,(car x)
(kill-local-variable ',(cdr x))))
local)))))))
(defun consult--abbreviate-directory (dir)
"Return abbreviated directory DIR for use in prompts."
(save-match-data
(let ((adir (abbreviate-file-name dir)))
(if (string-match "/\\([^/]+\\)/\\([^/]+\\)/\\'" adir)
(format "…/%s/%s/" (match-string 1 adir) (match-string 2 adir))
adir))))
(defun consult--directory-prompt (prompt dir)
"Return prompt and directory.
PROMPT is the prompt prefix. The directory
is appended to the prompt prefix. For projects
only the project name is shown. The `default-directory'
is not shown. Other directories are abbreviated and
only the last two path components are shown.
If DIR is a string, it is returned.
If DIR is a true value, the user is asked.
Then the `consult-project-root-function' is tried.
Otherwise the `default-directory' is returned."
(let* ((dir
(cond
((stringp dir) dir)
(dir
;; HACK Preserve this-command across `read-directory-name' call,
;; such that `consult-customize' continues to work.
;; TODO Find a better and more general solution which preserves `this-command'.
(let ((this-command this-command))
(read-directory-name "Directory: " nil nil t)))
(t (or (consult--project-root) default-directory))))
(edir (file-name-as-directory (expand-file-name dir)))
;; Bind default-directory in order to find the project
(pdir (let ((default-directory edir)) (consult--project-root))))
(cons
(cond
((equal edir pdir)
(format "%s (Project %s): " prompt (consult--project-name pdir)))
((equal edir (file-name-as-directory (expand-file-name default-directory)))
(concat prompt ": "))
(t (format "%s (%s): " prompt (consult--abbreviate-directory dir))))
edir)))
(defun consult--project-root ()
"Return project root as absolute path."
(when-let (root (and consult-project-root-function (funcall consult-project-root-function)))
(expand-file-name root)))
(defun consult--project-name (dir)
"Return the project name for DIR."
(if (string-match "/\\([^/]+\\)/\\'" dir)
(match-string 1 dir)
dir))
(defun consult--format-location (file line &optional str)
"Format location string 'FILE:LINE:STR'."
(setq line (number-to-string line)
str (concat file ":" line (and str ":") str)
file (length file))
(put-text-property 0 file 'face 'consult-file str)
(put-text-property (1+ file) (+ 1 file (length line)) 'face 'consult-line-number str)
str)
(defmacro consult--overlay (beg end &rest props)
"Make consult overlay between BEG and END with PROPS."
(let ((ov (make-symbol "ov"))
(puts))
(while props
(push `(overlay-put ,ov ,(car props) ,(cadr props)) puts)
(setq props (cddr props)))
`(let ((,ov (make-overlay ,beg ,end)))
,@puts
,ov)))
(defun consult--remove-dups (list)
"Remove duplicate strings from LIST."
(delete-dups (copy-sequence list)))
(defsubst consult--in-range-p (pos)
"Return t if position POS lies in range `point-min' to `point-max'."
(<= (point-min) pos (point-max)))
(defun consult--type-group (types)
"Return group function for TYPES."
(lambda (cand transform)
(if transform
cand
(alist-get (get-text-property 0 'consult--type cand) types))))
(defun consult--type-narrow (types)
"Return narrowing configuration from TYPES."
(list :predicate
(lambda (cand) (eq (get-text-property 0 'consult--type cand) consult--narrow))
:keys types))
(defun consult--lookup-member (_ candidates cand)
"Lookup CAND in CANDIDATES list, return original element."
(car (member cand candidates)))
(defun consult--lookup-cons (_ candidates cand)
"Lookup CAND in CANDIDATES alist, return cons."
(assoc cand candidates))
(defun consult--lookup-cdr (_ candidates cand)
"Lookup CAND in CANDIDATES alist, return cdr of element."
(cdr (assoc cand candidates)))
(defun consult--lookup-location (_ candidates cand)
"Lookup CAND in CANDIDATES list of 'consult-location category, return the marker."
(when-let (found (member cand candidates))
(car (get-text-property 0 'consult-location (car found)))))
(defun consult--lookup-candidate (_ candidates cand)
"Lookup CAND in CANDIDATES list and return property 'consult--candidate."
(when-let (found (member cand candidates))
(get-text-property 0 'consult--candidate (car found))))
(defun consult--forbid-minibuffer ()
"Raise an error if executed from the minibuffer."
(when (minibufferp)
(user-error "`%s' called inside the minibuffer" this-command)))
(defun consult--require-minibuffer ()
"Raise an error if executed outside the minibuffer."
(unless (minibufferp)
(user-error "`%s' must be called inside the minibuffer" this-command)))
(defun consult--fontify-all ()
"Ensure that the whole buffer is fontified."
;; Font-locking is lazy, i.e., if a line has not been looked at yet, the line
;; is not font-locked. We would observe this if consulting an unfontified
;; line. Therefore we have to enforce font-locking now, which is slow. In
;; order to prevent is hang-up we check the buffer size against
;; `consult-fontify-max-size'.
(when (and consult-fontify-preserve jit-lock-mode
(< (buffer-size) consult-fontify-max-size))
(jit-lock-fontify-now)))
(defun consult--fontify-region (start end)
"Ensure that region between START and END is fontified."
(when (and consult-fontify-preserve jit-lock-mode)
(jit-lock-fontify-now start end)))
(defmacro consult--with-increased-gc (&rest body)
"Temporarily increase the gc limit in BODY to optimize for throughput."
(let ((overwrite (make-symbol "overwrite")))
`(let* ((,overwrite (> consult--gc-threshold gc-cons-threshold))
(gc-cons-threshold (if ,overwrite consult--gc-threshold gc-cons-threshold))
(gc-cons-percentage (if ,overwrite consult--gc-percentage gc-cons-percentage)))
,@body)))
(defun consult--count-lines (pos)
"Move to position POS and return number of lines."
(let ((line 0))
(while (< (point) pos)
(forward-line)
(when (<= (point) pos)
(setq line (1+ line))))
(goto-char pos)
line))
(defun consult--position-marker (buffer line column)
"Get marker in BUFFER from LINE and COLUMN."
(when (buffer-live-p buffer)
(with-current-buffer buffer
(save-restriction
(save-excursion
(widen)
(goto-char (point-min))
;; Location data might be invalid by now!
(ignore-errors
(forward-line (1- line))
(forward-char column))
(point-marker))))))
(defun consult--line-group (cand transform)
"Group function used by `consult-line-all' and `consult-line-project'.
If TRANSFORM non-nil, return transformed CAND, otherwise return title."
(if transform
cand
(buffer-name
(marker-buffer
(car (get-text-property 0 'consult-location cand))))))
(defun consult--line-prefix (&optional curr-line)
"Annotate `consult-location' candidates with line numbers.
CURR-LINE is the current line number."
(setq curr-line (or curr-line -1))
(let* ((width (length (number-to-string (line-number-at-pos
(point-max)
consult-line-numbers-widen))))
(fmt-before (propertize (format "%%%dd " width) 'face 'consult-line-number-wrapped))
(fmt-after (propertize (format "%%%dd " width) 'face 'consult-line-number-prefix)))
(lambda (cand)
(let ((line (cdr (get-text-property 0 'consult-location cand))))
(list cand (format (if (< line curr-line) fmt-before fmt-after) line) "")))))
(defun consult--location-candidate (cand marker line &rest props)
"Add MARKER and LINE as 'consult-location text property to CAND.
Furthermore add the additional text properties PROPS, and append
tofu-encoded MARKER suffix for disambiguation."
(setq cand (concat cand (consult--tofu-encode marker)))
(add-text-properties 0 1 `(consult-location (,marker . ,line) ,@props) cand)
cand)