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consult.el
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consult.el
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;;; consult.el --- Consulting completing-read -*- lexical-binding: t -*-
;; Author: Daniel Mendler and Consult contributors
;; Maintainer: Daniel Mendler <mail@daniel-mendler.de>
;; Created: 2020
;; License: GPL-3.0-or-later
;; Version: 0.7
;; Package-Requires: ((emacs "26.1"))
;; Homepage: https://github.com/minad/consult
;; This file is not 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 many
;; search and navigation commands like `consult-imenu' and
;; `consult-line'. Searching through multiple files is supported by
;; the powerful 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, notably the default completion
;; system, Icomplete, 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
: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 0.25
"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 0.5
"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 0.25
"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-default-split "#"
"Default async input separator used for splitting.
Can also be nil in order to not automatically insert a separator. This
applies to asynchronous commands, e.g., `consult-grep'."
:type 'string)
(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.
You may want to add a function which pulses the current line, e.g.,
`xref-pulse-momentarily'."
: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-buffer-sources
'(consult--source-hidden-buffer
consult--source-buffer
consult--source-file
consult--source-bookmark
consult--source-project-buffer
consult--source-project-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-git-grep-command
"git --no-pager grep --null --color=always --extended-regexp\
--line-number -I -e ARG OPTS"
"Command line string for git-grep, see `consult-git-grep'.
The command string must have a specific format, including ARG and OPTS
substrings. ARG is replaced by the filter string and OPTS by the auxillary
command options."
:type 'string)
(defcustom consult-grep-command
"grep --null --line-buffered --color=always --extended-regexp\
--exclude-dir=.git --line-number -I -r . -e ARG OPTS"
"Command line string for grep, see `consult-grep'.
The command string must have a specific format, including ARG and OPTS
substrings. ARG is replaced by the filter string and OPTS by the auxillary
command options."
:type 'string)
(defcustom consult-grep-max-columns 250
"Maximal number of columns of grep output."
:type 'integer)
(defcustom consult-ripgrep-command
"rg --null --line-buffered --color=ansi --max-columns=1000\
--no-heading --line-number . -e ARG OPTS"
"Command line string for ripgrep, see `consult-ripgrep'.
The command string must have a specific format, including ARG and OPTS
substrings. ARG is replaced by the filter string and OPTS by the auxillary
command options."
:type 'string)
(defcustom consult-find-command
"find . -not ( -wholename */.* -prune ) -ipath *ARG* OPTS"
"Command line string for find, see `consult-find'.
The command string must have a specific format, including ARG and OPTS
substrings. ARG is replaced by the filter string and OPTS by the auxillary
command options. By default the ARG is wrapped in wildcards."
:type 'string)
(defcustom consult-locate-command
"locate --ignore-case --existing --regexp ARG OPTS"
"Command line string for locate, see `consult-locate'.
The command string must have a specific format, including ARG and OPTS
substrings. ARG is replaced by the filter string and OPTS by the auxillary
command options."
:type 'string)
(defcustom consult-man-command
"man -k ARG OPTS"
"Command line string for man, see `consult-man'.
The command string must have a specific format, including ARG and OPTS
substrings. ARG is replaced by the filter string and OPTS by the auxillary
command options."
: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 any) (const nil) key-sequence (repeat 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-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-config nil
"Command configuration alist, which allows 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."
:type '(alist :key-type symbol :value-type plist))
;;;; 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'.")
(define-obsolete-face-alias 'consult-preview-yank
'consult-preview-insertion "0.6")
(define-obsolete-face-alias 'consult-preview-region
'consult-preview-insertion "0.6")
(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-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-line-number-prefix
'((t :inherit line-number))
"Face used to highlight line numbers in selections.")
(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--error-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)
;;;; Internal variables
(defvar consult--multi-sources nil
"Vector of currently active `consult--multi' sources.")
(defvar consult--multi-align nil
"Alignment string for annotations for `consult--multi-annotate'.")
(defvar consult--buffer-display #'switch-to-buffer
"Buffer display function.")
(defvar consult--cache nil
"Cached data populated by `consult--define-cache'.")
(defvar consult--completion-filter-hook
(list #'consult--default-completion-filter)
"Obtain match function from completion system.")
(defvar consult--completion-candidate-hook
(list #'consult--default-completion-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.
The preview function expects two arguments, the current input string and the candidate string.")
(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-prefixes 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 67108864
"Large gc threshold for temporary increase.")
(defvar consult--gc-percentage 0.5
"Large gc percentage for temporary increase.")
(defvar consult--async-log
" *consult-async*"
"Buffer for async logging output used by `consult--async-process'.")
(defconst consult--grep-regexp
(let ((esc "\\(?:\e\\[[0-9;]*[mK]\\)*")
(name "\\([^\0\n\e]+\\)")
(line "\\([0-9]+\\)")
(reset "\\(?:\e\\[[mK]\\)*"))
(concat esc name esc "\0" esc line esc "[:\0]" reset))
"Regexp used to match file and line of grep output.")
(defconst consult--grep-match-regexp
"\e\\[[0-9;]+m\\(?:\e\\[K\\)?\\([^\e]*\\)\e\\[[0-9;]*m\\(?:\e\\[K\\)?"
"Regexp used to find matches in grep output.")
(defvar-local consult--focus-lines-overlays nil
"Overlays used by `consult-focus-lines'.")
;;;; Helper functions and macros
;; Upstream issue: https://debbugs.gnu.org/cgi/bugreport.cgi?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)))))
(defmacro consult--define-cache (name &rest body)
"Define cached value with NAME and BODY."
(declare (indent 1))
`(defun ,name ()
(or (alist-get ',name consult--cache)
(progn
;; XXX Emacs bug 35546, fixed in Emacs 27.1
;; https://debbugs.gnu.org/cgi/bugreport.cgi?bug=35546
;; (setf (alist-get key list) val) should return val
(setf (alist-get ',name consult--cache) ,(macroexp-progn body))
(alist-get ',name consult--cache)))))
(defun consult--completion-filter (category highlight)
"Return filter function used by completion system.
CATEGORY is the completion category.
HIGHLIGHT must be t if highlighting is needed."
(run-hook-with-args-until-success 'consult--completion-filter-hook category highlight))
(defun consult--completion-filter-complement (category)
"Return complement of the filter function used by the completion system.
CATEGORY is the completion category."
(let ((filter (consult--completion-filter category nil)))
(lambda (input cands)
(let ((ht (consult--string-hash (funcall filter input cands))))
(seq-remove (lambda (x) (gethash x ht)) cands)))))
(defun consult--completion-filter-dispatch (category highlight)
"Return dispatching filter function.
Either dispatch to `consult--completion-filter' or to
`consult--completion-filter-complement'.
CATEGORY is the completion category.
HIGHLIGHT must be t if highlighting is needed."
(let ((filter (consult--completion-filter category highlight))
(filter-not (consult--completion-filter-complement category)))
(lambda (input cands)
(cond
((string-match-p "\\`!? ?\\'" input) cands) ;; empty input
((string-prefix-p "! " input) (funcall filter-not (substring input 2) cands))
(t (funcall filter input cands))))))
(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) 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 (= 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--regexp-filter (regexps)
"Create filter regexp from REGEXPS."
(mapconcat (lambda (x) (concat "\\(?:" x "\\)")) regexps "\\|"))
(defun consult--format-directory-prompt (prompt dir)
"Format PROMPT, expand directory DIR and return them as a pair."
(save-match-data
(let ((edir (file-name-as-directory (expand-file-name dir)))
(ddir (file-name-as-directory (expand-file-name default-directory))))
(cons
(if (string= ddir edir)
(concat prompt ": ")
(let ((adir (abbreviate-file-name edir)))
(if (string-match "/\\([^/]+\\)/\\([^/]+\\)/\\'" adir)
(format "%s in …/%s/%s/: " prompt
(match-string 1 adir) (match-string 2 adir))
(format "%s in %s: " prompt adir))))
edir))))
(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."
(cond
((stringp dir) (consult--format-directory-prompt prompt dir))
(dir (consult--format-directory-prompt prompt (read-directory-name "Directory: " nil nil t)))
((when-let (root (consult--project-root))
(save-match-data
(if (string-match "/\\([^/]+\\)/\\'" root)
(cons (format "%s in project %s: " prompt (match-string 1 root)) root)
(consult--format-directory-prompt prompt root)))))
(t (consult--format-directory-prompt prompt default-directory))))
(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--format-location (file line &optional str)
"Format location string 'FILE:LINE:STR'."
(setq line (number-to-string line))
(put-text-property 0 (length line) 'face 'consult-line-number line)
(setq str (concat file ":" line ":" str))
(put-text-property 0 (length file) 'face 'consult-file 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-title (types)
"Return title 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."
(cons
(lambda (cand) (eq (get-text-property 0 'consult--type cand) consult--narrow))
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)))
(defun consult--define-key (map key cmd desc)
"Bind CMD to KEY with DESC in MAP.
Also create a which-key pseudo key to show the description."
(define-key map key (cons desc cmd))
;; The which-key description is potentially fragile if something is changed on the side
;; of which-key. Keep an eye on that. An alternative more standard-compliant method
;; would be to use `menu-item', but this is unfortunately not yet supported by which-key
;; and `describe-buffer-bindings'.
;; See https://github.com/justbur/emacs-which-key/issues/177
(let ((idx (- (length key) 1)))
(define-key map (vconcat (seq-take key idx) (vector 'which-key (elt key idx)))
`(which-key (,(copy-sequence desc))))))
(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 (- line 1))
(forward-char column))
(point-marker))))))
(defun consult--line-prefix ()
"Annotate `consult-location' candidates with line numbers."
(let* ((width (length (number-to-string (line-number-at-pos
(point-max)
consult-line-numbers-widen))))
(fmt (propertize (format "%%%dd " width) 'face 'consult-line-number-prefix)))
(lambda (cand)
(list cand (format fmt (cdr (get-text-property 0 'consult-location cand))) ""))))
(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)
(defsubst consult--buffer-substring (beg end &optional fontify)
"Return buffer substring between BEG and END.
If FONTIFY and `consult-fontify-preserve' are non-nil, first ensure that the
region has been fontified."
(if consult-fontify-preserve
(progn
(when fontify
(consult--fontify-region beg end))
(buffer-substring beg end))
(buffer-substring-no-properties beg end)))
(defun consult--region-with-cursor (beg end marker)
"Return region string with a marking at the cursor position.
BEG is the begin position.
END is the end position.
MARKER is the cursor position."
(let ((str (consult--buffer-substring beg end 'fontify)))
(if (>= marker end)
(concat str #(" " 0 1 (face consult-preview-cursor)))
(put-text-property (- marker beg) (- (1+ marker) beg)
'face 'consult-preview-cursor str)
str)))
(defun consult--line-with-cursor (marker)
"Return current line where the cursor MARKER is highlighted."
(consult--region-with-cursor (line-beginning-position) (line-end-position) marker))
;;;; Preview support
(defun consult--kill-clean-buffer (buf)
"Kill BUF if it has not been modified."
(unless (buffer-modified-p buf)
(kill-buffer buf)))
(defun consult--temporary-files ()
"Return a function to open files temporarily."
(let* ((new-buffers)
(restore-recentf recentf-mode)
(saved-recentf (when restore-recentf (copy-sequence recentf-list))))
(lambda (&optional name)
(if name
(or (get-file-buffer name)
(when-let (attrs (file-attributes name))
(let ((size (file-attribute-size attrs)))
(if (> size consult-preview-max-size)
(prog1 nil
(message "File `%s' (%s) is too large for preview"
name (file-size-human-readable size)))
(let* ((enable-dir-local-variables nil)
(enable-local-variables (and enable-local-variables :safe))
(inhibit-message t)
(buf (find-file-noselect
name 'nowarn
(> size consult-preview-raw-size))))
(push buf new-buffers)
;; Only keep a few buffers alive
(while (> (length new-buffers) consult-preview-max-count)
(consult--kill-clean-buffer (car (last new-buffers)))
(setq new-buffers (nbutlast new-buffers)))
buf)))))
(mapc #'consult--kill-clean-buffer new-buffers)
(when restore-recentf
(setq recentf-list saved-recentf))))))
(defun consult--invisible-open-permanently ()
"Open overlays which hide the current line.
See `isearch-open-necessary-overlays' and `isearch-open-overlay-temporary'."
(dolist (ov (overlays-in (line-beginning-position) (line-end-position)))
(when-let (fun (overlay-get ov 'isearch-open-invisible))
(when (invisible-p (overlay-get ov 'invisible))
(funcall fun ov)))))
(defun consult--invisible-open-temporarily ()
"Temporarily open overlays which hide the current line.
See `isearch-open-necessary-overlays' and `isearch-open-overlay-temporary'."
(let ((restore))
(dolist (ov (overlays-in (line-beginning-position) (line-end-position)) restore)
(let ((inv (overlay-get ov 'invisible)))
(when (and (invisible-p inv) (overlay-get ov 'isearch-open-invisible))
(push (if-let (fun (overlay-get ov 'isearch-open-invisible-temporary))
(progn
(funcall fun nil)
(lambda () (funcall fun t)))
(overlay-put ov 'invisible nil)
(lambda () (overlay-put ov 'invisible inv)))
restore))))))
(defun consult--jump-nomark (pos)
"Go to POS and recenter."
(cond
((and (markerp pos) (not (buffer-live-p (marker-buffer pos))))
;; Only print a message, no error in order to not mess
;; with the minibuffer update hook.
(message "Buffer is dead"))
(t
;; Switch to buffer if it is not visible
(when (and (markerp pos) (not (eq (current-buffer) (marker-buffer pos))))
(funcall consult--buffer-display (marker-buffer pos)))
;; Widen if we cannot jump to the position (idea from flycheck-jump-to-error)
(unless (= (goto-char pos) (point))
(widen)
(goto-char pos))
(run-hooks 'consult-after-jump-hook))))
(defun consult--jump (pos)
"Push current position to mark ring, go to POS and recenter."
(when pos
;; When the marker is in the same buffer,
;; record previous location such that the user can jump back quickly.
(unless (and (markerp pos) (not (eq (current-buffer) (marker-buffer pos))))
(push-mark (point) t))
(consult--jump-nomark pos)
(consult--invisible-open-permanently))
nil)
;; Matched strings are not highlighted as of now.
;; see https://github.com/minad/consult/issues/7
(defun consult--jump-preview (&optional face)
"The preview function used if selecting from a list of candidate positions.
The function can be used as the `:state' argument of `consult--read'.
FACE is the cursor face."
(let ((overlays)
(invisible)
(face (or face 'consult-preview-cursor))
(saved-min (point-min-marker))
(saved-max (point-max-marker))
(saved-pos (point-marker)))
(set-marker-insertion-type saved-max t) ;; Grow when text is inserted
(lambda (cand restore)
(mapc #'funcall invisible)
(mapc #'delete-overlay overlays)
(setq invisible nil overlays nil)
(cond
(restore
(let ((saved-buffer (marker-buffer saved-pos)))
(if (not (buffer-live-p saved-buffer))
(message "Buffer is dead")
(set-buffer saved-buffer)
(narrow-to-region saved-min saved-max)
(goto-char saved-pos))))
;; Jump to position
(cand
(consult--jump-nomark cand)
(setq invisible (consult--invisible-open-temporarily)
overlays
(list (save-excursion
(let ((vbeg (progn (beginning-of-visual-line) (point)))
(vend (progn (end-of-visual-line) (point)))
(end (line-end-position)))
(consult--overlay vbeg (if (= vend end) (1+ end) vend)
'face 'consult-preview-line
'window (selected-window))))
(consult--overlay (point) (1+ (point))
'face face
'window (selected-window)))))
;; If position cannot be previewed, return to saved position
(t (consult--jump-nomark saved-pos))))))
(defun consult--jump-state (&optional face)
"The state function used if selecting from a list of candidate positions.
The function can be used as the `:state' argument of `consult--read'.
FACE is the cursor face."
(let ((preview (consult--jump-preview face)))
(lambda (cand restore)
(funcall preview cand restore)
(when (and cand restore)
(consult--jump cand)))))
(defun consult--with-preview-1 (preview-key state transform candidate fun)
"Add preview support for FUN.
See `consult--with-preview' for the arguments PREVIEW-KEY, STATE, TRANSFORM and CANDIDATE."
(let ((input "") (selected))
(consult--minibuffer-with-setup-hook
(if (and state preview-key)
(lambda ()
(setq consult--preview-function