;;; company-dabbrev.el --- dabbrev-like company-mode completion backend -*- lexical-binding: t -*-
-;; Copyright (C) 2009, 2011, 2014, 2015 Free Software Foundation, Inc.
+;; Copyright (C) 2009, 2011, 2014, 2015, 2016 Free Software Foundation, Inc.
;; Author: Nikolaj Schumacher
(> (float-time (time-since ,start)) ,limit)
(throw 'done 'company-time-out))))))
-(defun company-dabbrev--make-regexp (prefix)
- (concat "\\<" (if (equal prefix "")
- company-dabbrev-char-regexp
- (regexp-quote prefix))
- "\\(" company-dabbrev-char-regexp "\\)*\\>"))
+(defun company-dabbrev--make-regexp ()
+ (concat "\\(?:" company-dabbrev-char-regexp "\\)+"))
(defun company-dabbrev--search-buffer (regexp pos symbols start limit
ignore-comments)
(invisible-p (match-beginning 0)))))
(push match symbols)))))
(goto-char (if pos (1- pos) (point-min)))
- ;; search before pos
- (company-dabrev--time-limit-while (re-search-backward regexp nil t)
- start limit
- (if (and ignore-comments (save-match-data (company-in-string-or-comment)))
- (goto-char (nth 8 (syntax-ppss)))
- (maybe-collect-match)))
+ ;; Search before pos.
+ (let ((tmp-end (point)))
+ (company-dabrev--time-limit-while (not (bobp))
+ start limit
+ (ignore-errors
+ (forward-char -10000))
+ (forward-line 0)
+ (save-excursion
+ ;; Before, we used backward search, but it matches non-greedily, and
+ ;; that forced us to use the "beginning/end of word" anchors in
+ ;; `company-dabbrev--make-regexp'. It's also about 2x slower.
+ (while (re-search-forward regexp tmp-end t)
+ (if (and ignore-comments (save-match-data (company-in-string-or-comment)))
+ (re-search-forward "\\s>\\|\\s!\\|\\s\"" tmp-end t)
+ (maybe-collect-match))))
+ (setq tmp-end (point))))
(goto-char (or pos (point-min)))
- ;; search after pos
+ ;; Search after pos.
(company-dabrev--time-limit-while (re-search-forward regexp nil t)
start limit
(if (and ignore-comments (save-match-data (company-in-string-or-comment)))
(cl-return))))
symbols))
+(defun company-dabbrev--prefix ()
+ ;; Not in the middle of a word.
+ (unless (looking-at company-dabbrev-char-regexp)
+ ;; Emacs can't do greedy backward-search.
+ (company-grab-line (format "\\(?:^\\| \\)[^ ]*?\\(\\(?:%s\\)*\\)"
+ company-dabbrev-char-regexp)
+ 1)))
+
+(defun company-dabbrev--filter (prefix candidates)
+ (let ((completion-ignore-case company-dabbrev-ignore-case))
+ (all-completions prefix candidates)))
+
;;;###autoload
(defun company-dabbrev (command &optional arg &rest ignored)
"dabbrev-like `company-mode' completion backend."
(interactive (list 'interactive))
(cl-case command
(interactive (company-begin-backend 'company-dabbrev))
- (prefix (company-grab-word))
+ (prefix (company-dabbrev--prefix))
(candidates
(let* ((case-fold-search company-dabbrev-ignore-case)
- (words (company-dabbrev--search (company-dabbrev--make-regexp arg)
+ (words (company-dabbrev--search (company-dabbrev--make-regexp)
company-dabbrev-time-limit
(pcase company-dabbrev-other-buffers
(`t (list major-mode))
(downcase-p (if (eq company-dabbrev-downcase 'case-replace)
case-replace
company-dabbrev-downcase)))
+ (setq words (company-dabbrev--filter arg words))
(if downcase-p
(mapcar 'downcase words)
words)))