;;; Commentary:
;;
-;; Company is a modular completion mechanism. Modules for retrieving completion
+;; Company is a modular completion framework. Modules for retrieving completion
;; candidates are called backends, modules for displaying them are frontends.
;;
-;; Company comes with many backends, e.g. `company-elisp'. These are
+;; Company comes with many backends, e.g. `company-etags'. These are
;; distributed in separate files and can be used individually.
;;
-;; Place company.el and the backends you want to use in a directory and add the
-;; following to your .emacs:
-;; (add-to-list 'load-path "/path/to/company")
-;; (autoload 'company-mode "company" nil t)
-;;
-;; Enable company-mode with M-x company-mode. For further information look at
-;; the documentation for `company-mode' (C-h f company-mode RET)
+;; Enable `company-mode' in all buffers with M-x global-company-mode. For
+;; further information look at the documentation for `company-mode' (C-h f
+;; company-mode RET).
;;
;; If you want to start a specific backend, call it interactively or use
;; `company-begin-backend'. For example:
;; (`meta (format "This value is named %s" arg))))
;;
;; Sometimes it is a good idea to mix several backends together, for example to
-;; enrich gtags with dabbrev-code results (to emulate local variables).
-;; To do this, add a list with both backends as an element in company-backends.
+;; enrich gtags with dabbrev-code results (to emulate local variables). To do
+;; this, add a list with both backends as an element in `company-backends'.
;;
;;; Change Log:
;;
(require 'cl-lib)
(require 'newcomment)
+(require 'pcase)
;; FIXME: Use `user-error'.
(add-to-list 'debug-ignored-errors "^.* frontend cannot be used twice$")
feature must disable cache (return t to `no-cache') and might also want to
respond to `match'.
-Optional commands:
+Optional commands
+=================
`sorted': Return t here to indicate that the candidates are sorted and will
not need to be sorted again.
does not know about. It should also be callable interactively and use
`company-begin-backend' to start itself in that case.
-Grouped backends:
+Grouped backends
+================
-An element of `company-backends' can also itself be a list of backends,
-then it's considered to be a \"grouped\" backend.
+An element of `company-backends' can also be a list of backends. The
+completions from backends in such groups are merged, but only from those
+backends which return the same `prefix'.
-When possible, commands taking a candidate as an argument are dispatched to
-the backend it came from. In other cases, the first non-nil value among
+If a backend command takes a candidate as an argument (e.g. `meta'), the
+call is dispatched to the backend the candidate came from. In other
+cases (except for `duplicates' and `sorted'), the first non-nil value among
all the backends is returned.
-The latter is the case for the `prefix' command. But if the group contains
-the keyword `:with', the backends after it are ignored for this command.
-
-The completions from backends in a group are merged (but only from those
-that return the same `prefix').
-
-If a grouped backend contains keyword `:sorted', the final (merged) list of
-candidates is not sorted.
+The group can also contain keywords. Currently, `:with' and `:sorted'
+keywords are defined. If the group contains keyword `:with', the backends
+listed after this keyword are ignored for the purpose of the `prefix'
+command. If the group contains keyword `:sorted', the final list of
+candidates is not sorted after concatenation.
-Asynchronous backends:
+Asynchronous backends
+=====================
The return value of each command can also be a cons (:async . FETCHER)
where FETCHER is a function of one argument, CALLBACK. When the data
(or (match-string-no-properties (or expression 0)) "")))
(defun company-grab-line (regexp &optional expression)
+ "Return a match string for REGEXP if it matches text before point.
+If EXPRESSION is non-nil, return the match string for the respective
+parenthesized expression in REGEXP.
+Matching is limited to the current line."
(company-grab regexp expression (point-at-bol)))
(defun company-grab-symbol ()
+ "If point is at the end of a symbol, return it.
+Otherwise, if point is not inside a symbol, return an empty string."
(if (looking-at "\\_>")
(buffer-substring (point) (save-excursion (skip-syntax-backward "w_")
(point)))
"")))
(defun company-grab-word ()
+ "If point is at the end of a word, return it.
+Otherwise, if point is not inside a symbol, return an empty string."
(if (looking-at "\\>")
(buffer-substring (point) (save-excursion (skip-syntax-backward "w")
(point)))
"")))
(defun company-grab-symbol-cons (idle-begin-after-re &optional max-len)
+ "Return a string SYMBOL or a cons (SYMBOL . t).
+SYMBOL is as returned by `company-grab-symbol'. If the text before poit
+matches IDLE-BEGIN-AFTER-RE, return it wrapped in a cons."
(let ((symbol (company-grab-symbol)))
(when symbol
(save-excursion
symbol)))))
(defun company-in-string-or-comment ()
+ "Return non-nil if point is within a string or comment."
(let ((ppss (syntax-ppss)))
(or (car (setq ppss (nthcdr 3 ppss)))
(car (setq ppss (cdr ppss)))
(when (eq command 'prefix)
(setq backends (butlast backends (length (member :with backends)))))
-
+
(unless (memq command '(sorted))
(setq backends (cl-delete-if #'keywordp backends)))
-
+
(pcase command
(`candidates
(company--multi-backend-adapter-candidates backends (car args)))
;;; search ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+(defcustom company-search-regexp-function #'regexp-quote
+ "Function to construct the search regexp from input.
+It's called with one argument, the current search input. It must return
+either a regexp without groups, or one where groups don't intersect and
+each one wraps a part of the input string."
+ :type '(choice
+ (const :tag "Exact match" regexp-quote)
+ (const :tag "Words separated with spaces" company-search-words-regexp)
+ (const :tag "Words separated with spaces, in any order"
+ company-search-words-in-any-order-regexp)))
+
(defvar-local company-search-string "")
(defvar company-search-lighter '(" "
(defvar-local company--search-old-changed nil)
+(defun company-search-words-regexp (input)
+ (mapconcat (lambda (word) (format "\\(%s\\)" (regexp-quote word)))
+ (split-string input " +" t) ".*"))
+
+(defun company-search-words-in-any-order-regexp (input)
+ (let* ((words (mapcar (lambda (word) (format "\\(%s\\)" (regexp-quote word)))
+ (split-string input " +" t)))
+ (permutations (company--permutations words)))
+ (mapconcat (lambda (words)
+ (mapconcat #'identity words ".*"))
+ permutations
+ "\\|")))
+
+(defun company--permutations (lst)
+ (if (not lst)
+ '(nil)
+ (cl-mapcan
+ (lambda (e)
+ (mapcar (lambda (perm) (cons e perm))
+ (company--permutations (cl-remove e lst :count 1))))
+ lst)))
+
(defun company--search (text lines)
- (let ((quoted (regexp-quote text))
+ (let ((re (funcall company-search-regexp-function text))
(i 0))
(cl-dolist (line lines)
- (when (string-match quoted line (length company-prefix))
+ (when (string-match-p re line (length company-prefix))
(cl-return i))
(cl-incf i))))
(company--search-update-predicate ss))
(company--search-update-string ss)))
-(defun company--search-update-predicate (&optional ss)
- (let* ((company-candidates-predicate
- (and (not (string= ss ""))
+(defun company--search-update-predicate (ss)
+ (let* ((re (funcall company-search-regexp-function ss))
+ (company-candidates-predicate
+ (and (not (string= re ""))
company-search-filtering
- (lambda (candidate) (string-match ss candidate))))
+ (lambda (candidate) (string-match re candidate))))
(cc (company-calculate-candidates company-prefix)))
(unless cc (error "No match"))
(company-update-candidates cc)))
Regular characters are appended to the search string.
+Customize `company-search-regexp-function' to change how the input
+is interpreted when searching.
+
The command `company-search-toggle-filtering' (\\[company-search-toggle-filtering])
uses the search string to filter the completion candidates."
(interactive)
require-match)))
callback)))
+(declare-function find-library-name "find-func")
+(declare-function lm-version "lisp-mnt")
+
(defun company-version (&optional show-version)
"Get the Company version as string.
mouse-face company-tooltip-mouse)
line))
(when selected
- (if (and (not (string= company-search-string ""))
- (string-match (regexp-quote company-search-string) value
- (length company-prefix)))
- (let ((beg (+ margin (match-beginning 0)))
- (end (+ margin (match-end 0)))
- (width (- width (length right))))
- (when (< beg width)
- (add-text-properties beg (min end width)
- '(face company-tooltip-search)
- line)))
+ (if (let ((re (funcall company-search-regexp-function
+ company-search-string)))
+ (and (not (string= re ""))
+ (string-match re value (length company-prefix))))
+ (pcase-dolist (`(,mbeg . ,mend) (company--search-chunks))
+ (let ((beg (+ margin mbeg))
+ (end (+ margin mend))
+ (width (- width (length right))))
+ (when (< beg width)
+ (add-text-properties beg (min end width)
+ '(face company-tooltip-search)
+ line))))
(add-text-properties 0 width '(face company-tooltip-selection
mouse-face company-tooltip-selection)
line)
line)))
line))
+(defun company--search-chunks ()
+ (let ((md (match-data t))
+ res)
+ (if (<= (length md) 2)
+ (push (cons (nth 0 md) (nth 1 md)) res)
+ (while (setq md (nthcdr 2 md))
+ (when (car md)
+ (push (cons (car md) (cadr md)) res))))
+ res))
+
(defun company--clean-string (str)
(replace-regexp-in-string
"\\([^[:graph:] ]\\)\\|\\(\ufeff\\)\\|[[:multibyte:]]"
'(face company-preview-common) completion)
;; Add search string
- (and company-search-string
- (string-match (regexp-quote company-search-string) completion)
- (add-text-properties (match-beginning 0)
- (match-end 0)
- '(face company-preview-search)
- completion))
+ (and (string-match (funcall company-search-regexp-function
+ company-search-string)
+ completion)
+ (pcase-dolist (`(,mbeg . ,mend) (company--search-chunks))
+ (add-text-properties mbeg
+ mend
+ '(face company-preview-search)
+ completion)))
(setq completion (company-strip-prefix completion))