-;;; company-dabbrev.el --- A dabbrev-like company-mode completion back-end
+;;; company-dabbrev.el --- dabbrev-like company-mode completion back-end -*- lexical-binding: t -*-
-;; Copyright (C) 2009, 2011 Free Software Foundation, Inc.
+;; Copyright (C) 2009, 2011, 2014 Free Software Foundation, Inc.
;; Author: Nikolaj Schumacher
;;; Code:
(require 'company)
-(eval-when-compile (require 'cl))
+(require 'cl-lib)
+
+(defgroup company-dabbrev nil
+ "dabbrev-like completion back-end."
+ :group 'company)
(defcustom company-dabbrev-other-buffers 'all
"Determines whether `company-dabbrev' should search other buffers.
-If `all', search all other buffers. If t, search buffers with the same
-major mode.
-See also `company-dabbrev-time-limit'."
- :group 'company
+If `all', search all other buffers, except the ignored ones. If t, search
+buffers with the same major mode. See also `company-dabbrev-time-limit'."
:type '(choice (const :tag "Off" nil)
(const :tag "Same major mode" t)
(const :tag "All" all)))
-(defcustom company-dabbrev-time-limit .5
+(defcustom company-dabbrev-ignore-buffers "\\`[ *]"
+ "Regexp matching the names of buffers to ignore."
+ :type 'regexp)
+
+(defcustom company-dabbrev-time-limit .1
"Determines how many seconds `company-dabbrev' should look for matches."
- :group 'company
:type '(choice (const :tag "Off" nil)
(number :tag "Seconds")))
(defcustom company-dabbrev-char-regexp "\\sw"
"A regular expression matching the characters `company-dabbrev' looks for."
- :group 'company
:type 'regexp)
+(defcustom company-dabbrev-ignore-case 'keep-prefix
+ "Non-nil to ignore case when collecting completion candidates.
+When it's `keep-prefix', the text before point will remain unchanged after
+candidate is inserted, even some of its characters have different case.")
+
+(defcustom company-dabbrev-downcase 'case-replace
+ "Whether to downcase the returned candidates.
+
+The value of nil means keep them as-is.
+`case-replace' means use the value of `case-replace'.
+Any other value means downcase.
+
+If you set this value to nil, you may also want to set
+`company-dabbrev-ignore-case' to any value other than `keep-prefix'.")
+
+(defcustom company-dabbrev-minimum-length 4
+ "The minimum length for the completion candidate to be included.
+This variable affects both `company-dabbrev' and `company-dabbrev-code'."
+ :type 'integer
+ :package-version '(company . "0.8.3"))
+
(defmacro company-dabrev--time-limit-while (test start limit &rest body)
(declare (indent 3) (debug t))
`(let ((company-time-limit-while-counter 0))
(while ,test
,@body
(and ,limit
- (eq (incf company-time-limit-while-counter) 25)
+ (eq (cl-incf company-time-limit-while-counter) 25)
(setq company-time-limit-while-counter 0)
(> (float-time (time-since ,start)) ,limit)
(throw 'done 'company-time-out))))))
start limit
(setq match (match-string-no-properties 0))
(if (and ignore-comments (company-in-string-or-comment))
- (re-search-backward "\\s<\\|\\s!\\|\\s\"\\|\\s|" nil t)
- (push match symbols)))
+ (goto-char (nth 8 (syntax-ppss)))
+ (when (>= (length match) company-dabbrev-minimum-length)
+ (push match symbols))))
(goto-char (or pos (point-min)))
;; search after pos
(company-dabrev--time-limit-while (re-search-forward regexp nil t)
(setq match (match-string-no-properties 0))
(if (and ignore-comments (company-in-string-or-comment))
(re-search-forward "\\s>\\|\\s!\\|\\s\"" nil t)
- (push match symbols)))
+ (when (>= (length match) company-dabbrev-minimum-length)
+ (push match symbols))))
symbols)))
-(defun company-dabbrev--search (regexp &optional limit other-buffers
+(defun company-dabbrev--search (regexp &optional limit other-buffer-modes
ignore-comments)
(let* ((start (current-time))
(symbols (company-dabbrev--search-buffer regexp (point) nil start limit
ignore-comments)))
- (when other-buffers
- (dolist (buffer (delq (current-buffer) (buffer-list)))
- (and (or (eq other-buffers 'all)
- (eq (buffer-local-value 'major-mode buffer) major-mode))
- (with-current-buffer buffer
- (setq symbols
- (company-dabbrev--search-buffer regexp nil symbols start
- limit ignore-comments))))
+ (when other-buffer-modes
+ (cl-dolist (buffer (delq (current-buffer) (buffer-list)))
+ (with-current-buffer buffer
+ (when (if (eq other-buffer-modes 'all)
+ (not (string-match-p company-dabbrev-ignore-buffers
+ (buffer-name)))
+ (apply #'derived-mode-p other-buffer-modes))
+ (setq symbols
+ (company-dabbrev--search-buffer regexp nil symbols start
+ limit ignore-comments))))
(and limit
(> (float-time (time-since start)) limit)
- (return))))
+ (cl-return))))
symbols))
;;;###autoload
(defun company-dabbrev (command &optional arg &rest ignored)
- "A dabbrev-like `company-mode' completion back-end."
+ "dabbrev-like `company-mode' completion back-end."
(interactive (list 'interactive))
- (case command
+ (cl-case command
(interactive (company-begin-backend 'company-dabbrev))
(prefix (company-grab-word))
(candidates
- (mapcar 'downcase
- (company-dabbrev--search (company-dabbrev--make-regexp arg)
- company-dabbrev-time-limit
- company-dabbrev-other-buffers)))
- (ignore-case t)
+ (let* ((case-fold-search company-dabbrev-ignore-case)
+ (words (company-dabbrev--search (company-dabbrev--make-regexp arg)
+ company-dabbrev-time-limit
+ (pcase company-dabbrev-other-buffers
+ (`t (list major-mode))
+ (`all `all))))
+ (downcase-p (if (eq company-dabbrev-downcase 'case-replace)
+ case-replace
+ company-dabbrev-downcase)))
+ (if downcase-p
+ (mapcar 'downcase words)
+ words)))
+ (ignore-case company-dabbrev-ignore-case)
(duplicates t)))
(provide 'company-dabbrev)