code.delx.au - gnu-emacs-elpa/blob - company.el

   1 ;;; company.el --- extensible inline text completion mechanism
   2 ;;
   3 ;; Copyright (C) 2009 Nikolaj Schumacher
   4 ;;
   5 ;; Author: Nikolaj Schumacher <bugs * nschum de>
   6 ;; Version: 0.4
   7 ;; Keywords: abbrev, convenience, matchis
   8 ;; URL: http://nschum.de/src/emacs/company/
   9 ;; Compatibility: GNU Emacs 22.x, GNU Emacs 23.x
  10 ;;
  11 ;; This file is NOT part of GNU Emacs.
  12 ;;
  13 ;; This program is free software; you can redistribute it and/or
  14 ;; modify it under the terms of the GNU General Public License
  15 ;; as published by the Free Software Foundation; either version 2
  16 ;; of the License, or (at your option) any later version.
  17 ;;
  18 ;; This program is distributed in the hope that it will be useful,
  19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 ;; GNU General Public License for more details.
  22 ;;
  23 ;; You should have received a copy of the GNU General Public License
  24 ;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
  25 ;;
  26 ;;; Commentary:
  27 ;;
  28 ;; Company is a modular completion mechanism.  Modules for retrieving completion
  29 ;; candidates are called back-ends, modules for displaying them are front-ends.
  30 ;;
  31 ;; Company comes with many back-ends, e.g. `company-elisp'.  These are
  32 ;; distributed in individual files and can be used individually.
  33 ;;
  34 ;; Place company.el and the back-ends you want to use in a directory and add the
  35 ;; following to your .emacs:
  36 ;; (add-to-list 'load-path "/path/to/company")
  37 ;; (autoload 'company-mode "company" nil t)
  38 ;;
  39 ;; Enable company-mode with M-x company-mode.  For further information look at
  40 ;; the documentation for `company-mode' (C-h f company-mode RET)
  41 ;;
  42 ;; If you want to start a specific back-end, call it interactively or use
  43 ;; `company-begin-backend'.  For example:
  44 ;; M-x company-abbrev will prompt for and insert an abbrev.
  45 ;;
  46 ;; To write your own back-end, look at the documentation for `company-backends'.
  47 ;; Here is a simple example completing "foo":
  48 ;;
  49 ;; (defun company-my-backend (command &optional arg &rest ignored)
  50 ;;   (case command
  51 ;;     ('prefix (when (looking-back "foo\\>")
  52 ;;                (match-string 0)))
  53 ;;     ('candidates (list "foobar" "foobaz" "foobarbaz"))
  54 ;;     ('meta (format "This value is named %s" arg))))
  55 ;;
  56 ;; Sometimes it is a good idea to mix two back-ends together, for example to
  57 ;; enrich gtags with dabbrev text (to emulate local variables):
  58 ;;
  59 ;; (defun gtags-gtags-dabbrev-backend (command &optional arg &rest ignored)
  60 ;;   (case command
  61 ;;     (prefix (company-gtags 'prefix))
  62 ;;     (candidates (append (company-gtags 'candidates arg)
  63 ;;                         (company-dabbrev 'candidates arg)))))
  64 ;;
  65 ;; Known Issues:
  66 ;; When point is at the very end of the buffer, the pseudo-tooltip appears very
  67 ;; wrong, unless company is allowed to temporarily insert a fake newline.
  68 ;; This behavior is enabled by `company-end-of-buffer-workaround'.
  69 ;;
  70 ;;; Change Log:
  71 ;;
  72 ;;    Performance enhancements.
  73 ;;    Added `company-eclim' back-end.
  74 ;;    Added safer workaround for Emacs `posn-col-row' bug.
  75 ;;
  76 ;; 2009-04-18 (0.4)
  77 ;;    Automatic completion is now aborted if the prefix gets too short.
  78 ;;    Added option `company-dabbrev-time-limit'.
  79 ;;    `company-backends' now supports merging back-ends.
  80 ;;    Added back-end `company-dabbrev-code' for generic code.
  81 ;;    Fixed `company-begin-with'.
  82 ;;
  83 ;; 2009-04-15 (0.3.1)
  84 ;;    Added 'stop prefix to prevent dabbrev from completing inside of symbols.
  85 ;;    Fixed issues with tabbar-mode and line-spacing.
  86 ;;    Performance enhancements.
  87 ;;
  88 ;; 2009-04-12 (0.3)
  89 ;;    Added `company-begin-commands' option.
  90 ;;    Added abbrev, tempo and Xcode back-ends.
  91 ;;    Back-ends are now interactive.  You can start them with M-x backend-name.
  92 ;;    Added `company-begin-with' for starting company from elisp-code.
  93 ;;    Added hooks.
  94 ;;    Added `company-require-match' and `company-auto-complete' options.
  95 ;;
  96 ;; 2009-04-05 (0.2.1)
  97 ;;    Improved Emacs Lisp back-end behavior for local variables.
  98 ;;    Added `company-elisp-detect-function-context' option.
  99 ;;    The mouse can now be used for selection.
 100 ;;
 101 ;; 2009-03-22 (0.2)
 102 ;;    Added `company-show-location'.
 103 ;;    Added etags back-end.
 104 ;;    Added work-around for end-of-buffer bug.
 105 ;;    Added `company-filter-candidates'.
 106 ;;    More local Lisp variables are now included in the candidates.
 107 ;;
 108 ;; 2009-03-21 (0.1.5)
 109 ;;    Fixed elisp documentation buffer always showing the same doc.
 110 ;;    Added `company-echo-strip-common-frontend'.
 111 ;;    Added `company-show-numbers' option and M-0 ... M-9 default bindings.
 112 ;;    Don't hide the echo message if it isn't shown.
 113 ;;
 114 ;; 2009-03-20 (0.1)
 115 ;;    Initial release.
 116 ;;
 117 ;;; Code:
 118
 119 (eval-when-compile (require 'cl))
 120
 121 (add-to-list 'debug-ignored-errors "^.* frontend cannot be used twice$")
 122 (add-to-list 'debug-ignored-errors "^Echo area cannot be used twice$")
 123 (add-to-list 'debug-ignored-errors "^No \\(document\\|loc\\)ation available$")
 124 (add-to-list 'debug-ignored-errors "^Company not ")
 125 (add-to-list 'debug-ignored-errors "^No candidate number ")
 126 (add-to-list 'debug-ignored-errors "^Cannot complete at point$")
 127
 128 (defgroup company nil
 129   "Extensible inline text completion mechanism"
 130   :group 'abbrev
 131   :group 'convenience
 132   :group 'maching)
 133
 134 (defface company-tooltip
 135   '((t :background "yellow"
 136        :foreground "black"))
 137   "*Face used for the tool tip."
 138   :group 'company)
 139
 140 (defface company-tooltip-selection
 141   '((default :inherit company-tooltip)
 142     (((class color) (min-colors 88)) (:background "orange1"))
 143     (t (:background "green")))
 144   "*Face used for the selection in the tool tip."
 145   :group 'company)
 146
 147 (defface company-tooltip-mouse
 148   '((default :inherit highlight))
 149   "*Face used for the tool tip item under the mouse."
 150   :group 'company)
 151
 152 (defface company-tooltip-common
 153   '((t :inherit company-tooltip
 154        :foreground "red"))
 155   "*Face used for the common completion in the tool tip."
 156   :group 'company)
 157
 158 (defface company-tooltip-common-selection
 159   '((t :inherit company-tooltip-selection
 160        :foreground "red"))
 161   "*Face used for the selected common completion in the tool tip."
 162   :group 'company)
 163
 164 (defcustom company-tooltip-limit 10
 165   "*The maximum number of candidates in the tool tip"
 166   :group 'company
 167   :type 'integer)
 168
 169 (defface company-preview
 170   '((t :background "blue4"
 171        :foreground "wheat"))
 172   "*Face used for the completion preview."
 173   :group 'company)
 174
 175 (defface company-preview-common
 176   '((t :inherit company-preview
 177        :foreground "red"))
 178   "*Face used for the common part of the completion preview."
 179   :group 'company)
 180
 181 (defface company-preview-search
 182   '((t :inherit company-preview
 183        :background "blue1"))
 184   "*Face used for the search string in the completion preview."
 185   :group 'company)
 186
 187 (defface company-echo nil
 188   "*Face used for completions in the echo area."
 189   :group 'company)
 190
 191 (defface company-echo-common
 192   '((((background dark)) (:foreground "firebrick1"))
 193     (((background light)) (:background "firebrick4")))
 194   "*Face used for the common part of completions in the echo area."
 195   :group 'company)
 196
 197 (defun company-frontends-set (variable value)
 198   ;; uniquify
 199   (let ((remainder value))
 200     (setcdr remainder (delq (car remainder) (cdr remainder))))
 201   (and (memq 'company-pseudo-tooltip-unless-just-one-frontend value)
 202        (memq 'company-pseudo-tooltip-frontend value)
 203        (error "Pseudo tooltip frontend cannot be used twice"))
 204   (and (memq 'company-preview-if-just-one-frontend value)
 205        (memq 'company-preview-frontend value)
 206        (error "Preview frontend cannot be used twice"))
 207   (and (memq 'company-echo value)
 208        (memq 'company-echo-metadata-frontend value)
 209        (error "Echo area cannot be used twice"))
 210   ;; preview must come last
 211   (dolist (f '(company-preview-if-just-one-frontend company-preview-frontend))
 212     (when (memq f value)
 213       (setq value (append (delq f value) (list f)))))
 214   (set variable value))
 215
 216 (defcustom company-frontends '(company-pseudo-tooltip-unless-just-one-frontend
 217                                company-preview-frontend
 218                                company-echo-metadata-frontend)
 219   "*The list of active front-ends (visualizations).
 220 Each front-end is a function that takes one argument.  It is called with
 221 one of the following arguments:
 222
 223 'show: When the visualization should start.
 224
 225 'hide: When the visualization should end.
 226
 227 'update: When the data has been updated.
 228
 229 'pre-command: Before every command that is executed while the
 230 visualization is active.
 231
 232 'post-command: After every command that is executed while the
 233 visualization is active.
 234
 235 The visualized data is stored in `company-prefix', `company-candidates',
 236 `company-common', `company-selection', `company-point' and
 237 `company-search-string'."
 238   :set 'company-frontends-set
 239   :group 'company
 240   :type '(repeat (choice (const :tag "echo" company-echo-frontend)
 241                          (const :tag "echo, strip common"
 242                                 company-echo-strip-common-frontend)
 243                          (const :tag "show echo meta-data in echo"
 244                                 company-echo-metadata-frontend)
 245                          (const :tag "pseudo tooltip"
 246                                 company-pseudo-tooltip-frontend)
 247                          (const :tag "pseudo tooltip, multiple only"
 248                                 company-pseudo-tooltip-unless-just-one-frontend)
 249                          (const :tag "preview" company-preview-frontend)
 250                          (const :tag "preview, unique only"
 251                                 company-preview-if-just-one-frontend)
 252                          (function :tag "custom function" nil))))
 253
 254 (defvar company-safe-backends
 255   '((company-abbrev . "Abbrev")
 256     (company-css . "CSS")
 257     (company-dabbrev . "dabbrev for plain text")
 258     (company-dabbrev-code . "dabbrev for code")
 259     (company-eclim . "eclim (an Eclipse interace)")
 260     (company-elisp . "Emacs Lisp")
 261     (company-etags . "etags")
 262     (company-files . "Files")
 263     (company-gtags . "GNU Global")
 264     (company-ispell . "ispell")
 265     (company-keywords . "Programming language keywords")
 266     (company-nxml . "nxml")
 267     (company-oddmuse . "Oddmuse")
 268     (company-semantic . "CEDET Semantic")
 269     (company-tempo . "Tempo templates")
 270     (company-xcode . "Xcode")))
 271 (put 'company-safe-backends 'risky-local-variable t)
 272
 273 (defun company-safe-backends-p (backends)
 274   (and (consp backends)
 275        (not (dolist (backend backends)
 276               (unless (if (consp backend)
 277                           (company-safe-backends-p backend)
 278                         (assq backend company-safe-backends))
 279                 (return t))))))
 280
 281 (defcustom company-backends '(company-elisp company-nxml company-css
 282                               company-eclim company-semantic company-xcode
 283                               (company-gtags company-etags company-dabbrev-code
 284                                company-keywords)
 285                               company-oddmuse company-files company-dabbrev)
 286   "*The list of active back-ends (completion engines).
 287 Each list elements can itself be a list of back-ends.  In that case their
 288 completions are merged.  Otherwise only the first matching back-end returns
 289 results.
 290
 291 Each back-end is a function that takes a variable number of arguments.
 292 The first argument is the command requested from the back-end.  It is one
 293 of the following:
 294
 295 'prefix: The back-end should return the text to be completed.  It must be
 296 text immediately before `point'.  Returning nil passes control to the next
 297 back-end.  The function should return 'stop if it should complete but cannot
 298 \(e.g. if it is in the middle of a string\).
 299
 300 'candidates: The second argument is the prefix to be completed.  The
 301 return value should be a list of candidates that start with the prefix.
 302
 303 Optional commands:
 304
 305 'sorted: The back-end may return t here to indicate that the candidates
 306 are sorted and will not need to be sorted again.
 307
 308 'duplicates: If non-nil, company will take care of removing duplicates
 309 from the list.
 310
 311 'no-cache: Usually company doesn't ask for candidates again as completion
 312 progresses, unless the back-end returns t for this command.  The second
 313 argument is the latest prefix.
 314
 315 'meta: The second argument is a completion candidate.  The back-end should
 316 return a (short) documentation string for it.
 317
 318 'doc-buffer: The second argument is a completion candidate.  The back-end should
 319 create a buffer (preferably with `company-doc-buffer'), fill it with
 320 documentation and return it.
 321
 322 'location: The second argument is a completion candidate.  The back-end can
 323 return the cons of buffer and buffer location, or of file and line
 324 number where the completion candidate was defined.
 325
 326 'require-match: If this value is t, the user is not allowed to enter anything
 327 not offering as a candidate.  Use with care!  The default value nil gives the
 328 user that choice with `company-require-match'.  Return value 'never overrides
 329 that option the other way around.
 330
 331 The back-end should return nil for all commands it does not support or
 332 does not know about.  It should also be callable interactively and use
 333 `company-begin-backend' to start itself in that case."
 334   :group 'company
 335   :type `(repeat
 336           (choice
 337            :tag "Back-end"
 338            ,@(mapcar (lambda (b) `(const :tag ,(cdr b) ,(car b)))
 339                      company-safe-backends)
 340            (symbol :tag "User defined")
 341            (repeat :tag "Merged Back-ends"
 342                    (choice :tag "Back-end"
 343                            ,@(mapcar (lambda (b)
 344                                        `(const :tag ,(cdr b) ,(car b)))
 345                                      company-safe-backends)
 346                            (symbol :tag "User defined"))))))
 347
 348 (put 'company-backends 'safe-local-variable 'company-safe-backend-p)
 349
 350 (defcustom company-completion-started-hook nil
 351   "*Hook run when company starts completing.
 352 The hook is called with one argument that is non-nil if the completion was
 353 started manually."
 354   :group 'company
 355   :type 'hook)
 356
 357 (defcustom company-completion-cancelled-hook nil
 358   "*Hook run when company cancels completing.
 359 The hook is called with one argument that is non-nil if the completion was
 360 aborted manually."
 361   :group 'company
 362   :type 'hook)
 363
 364 (defcustom company-completion-finished-hook nil
 365   "*Hook run when company successfully completes.
 366 The hook is called with the selected candidate as an argument."
 367   :group 'company
 368   :type 'hook)
 369
 370 (defcustom company-minimum-prefix-length 3
 371   "*The minimum prefix length for automatic completion."
 372   :group 'company
 373   :type '(integer :tag "prefix length"))
 374
 375 (defcustom company-require-match 'company-explicit-action-p
 376   "*If enabled, disallow non-matching input.
 377 This can be a function do determine if a match is required.
 378
 379 This can be overridden by the back-end, if it returns t or 'never to
 380 'require-match.  `company-auto-complete' also takes precedence over this."
 381   :group 'company
 382   :type '(choice (const :tag "Off" nil)
 383                  (function :tag "Predicate function")
 384                  (const :tag "On, if user interaction took place"
 385                         'company-explicit-action-p)
 386                  (const :tag "On" t)))
 387
 388 (defcustom company-auto-complete 'company-explicit-action-p
 389   "Determines when to auto-complete.
 390 If this is enabled, all characters from `company-auto-complete-chars' complete
 391 the selected completion.  This can also be a function."
 392   :group 'company
 393   :type '(choice (const :tag "Off" nil)
 394                  (function :tag "Predicate function")
 395                  (const :tag "On, if user interaction took place"
 396                         'company-explicit-action-p)
 397                  (const :tag "On" t)))
 398
 399 (defcustom company-auto-complete-chars '(?\  ?\( ?\) ?. ?\" ?$ ?\' ?< ?| ?!)
 400   "Determines which characters trigger an automatic completion.
 401 See `company-auto-complete'.  If this is a string, each string character causes
 402 completion.  If it is a list of syntax description characters (see
 403 `modify-syntax-entry'), all characters with that syntax auto-complete.
 404
 405 This can also be a function, which is called with the new input and should
 406 return non-nil if company should auto-complete.
 407
 408 A character that is part of a valid candidate never starts auto-completion."
 409   :group 'company
 410   :type '(choice (string :tag "Characters")
 411                  (set :tag "Syntax"
 412                       (const :tag "Whitespace" ?\ )
 413                       (const :tag "Symbol" ?_)
 414                       (const :tag "Opening parentheses" ?\()
 415                       (const :tag "Closing parentheses" ?\))
 416                       (const :tag "Word constituent" ?w)
 417                       (const :tag "Punctuation." ?.)
 418                       (const :tag "String quote." ?\")
 419                       (const :tag "Paired delimiter." ?$)
 420                       (const :tag "Expression quote or prefix operator." ?\')
 421                       (const :tag "Comment starter." ?<)
 422                       (const :tag "Comment ender." ?>)
 423                       (const :tag "Character-quote." ?/)
 424                       (const :tag "Generic string fence." ?|)
 425                       (const :tag "Generic comment fence." ?!))
 426                  (function :tag "Predicate function")))
 427
 428 (defcustom company-idle-delay .7
 429   "*The idle delay in seconds until automatic completions starts.
 430 A value of nil means never complete automatically, t means complete
 431 immediately when a prefix of `company-minimum-prefix-length' is reached."
 432   :group 'company
 433   :type '(choice (const :tag "never (nil)" nil)
 434                  (const :tag "immediate (t)" t)
 435                  (number :tag "seconds")))
 436
 437 (defcustom company-begin-commands t
 438   "*A list of commands following which company will start completing.
 439 If this is t, it will complete after any command.  See `company-idle-delay'.
 440
 441 Alternatively any command with a non-nil 'company-begin property is treated as
 442 if it was on this list."
 443   :group 'company
 444   :type '(choice (const :tag "Any command" t)
 445                  (const :tag "Self insert command" '(self-insert-command))
 446                  (repeat :tag "Commands" function)))
 447
 448 (defcustom company-show-numbers nil
 449   "*If enabled, show quick-access numbers for the first ten candidates."
 450   :group 'company
 451   :type '(choice (const :tag "off" nil)
 452                  (const :tag "on" t)))
 453
 454 (defvar company-end-of-buffer-workaround t
 455   "*Work around a visualization bug when completing at the end of the buffer.
 456 The work-around consists of adding a newline.")
 457
 458 ;;; mode ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 459
 460 (defvar company-mode-map (make-sparse-keymap)
 461   "Keymap used by `company-mode'.")
 462
 463 (defvar company-active-map
 464   (let ((keymap (make-sparse-keymap)))
 465     (define-key keymap "\e\e\e" 'company-abort)
 466     (define-key keymap "\C-g" 'company-abort)
 467     (define-key keymap (kbd "M-n") 'company-select-next)
 468     (define-key keymap (kbd "M-p") 'company-select-previous)
 469     (define-key keymap (kbd "<down>") 'company-select-next)
 470     (define-key keymap (kbd "<up>") 'company-select-previous)
 471     (define-key keymap [down-mouse-1] 'ignore)
 472     (define-key keymap [down-mouse-3] 'ignore)
 473     (define-key keymap [mouse-1] 'company-complete-mouse)
 474     (define-key keymap [mouse-3] 'company-select-mouse)
 475     (define-key keymap [up-mouse-1] 'ignore)
 476     (define-key keymap [up-mouse-3] 'ignore)
 477     (define-key keymap "\C-m" 'company-complete-selection)
 478     (define-key keymap "\t" 'company-complete-common)
 479     (define-key keymap (kbd "<f1>") 'company-show-doc-buffer)
 480     (define-key keymap "\C-w" 'company-show-location)
 481     (define-key keymap "\C-s" 'company-search-candidates)
 482     (define-key keymap "\C-\M-s" 'company-filter-candidates)
 483     (dotimes (i 10)
 484       (define-key keymap (vector (+ (aref (kbd "M-0") 0) i))
 485         `(lambda () (interactive) (company-complete-number ,i))))
 486
 487     keymap)
 488   "Keymap that is enabled during an active completion.")
 489
 490 (defun company-init-backend (backend)
 491   (and (symbolp backend)
 492        (not (fboundp backend))
 493        (ignore-errors (require backend nil t)))
 494
 495   (if (or (symbolp backend)
 496           (functionp backend))
 497       (if (ignore-errors (funcall backend 'init) t)
 498           (put backend 'company-init t)
 499         (put backend 'company-init 'failed)
 500         (message "Company back-end '%s' could not be initialized"
 501                  backend)
 502         nil)
 503     (mapc 'company-init-backend backend)))
 504
 505 ;;;###autoload
 506 (define-minor-mode company-mode
 507   "\"complete anything\"; in in-buffer completion framework.
 508 Completion starts automatically, depending on the values
 509 `company-idle-delay' and `company-minimum-prefix-length'.
 510
 511 Completion can be controlled with the commands:
 512 `company-complete-common', `company-complete-selection', `company-complete',
 513 `company-select-next', `company-select-previous'.  If these commands are
 514 called before `company-idle-delay', completion will also start.
 515
 516 Completions can be searched with `company-search-candidates' or
 517 `company-filter-candidates'.  These can be used while completion is
 518 inactive, as well.
 519
 520 The completion data is retrieved using `company-backends' and displayed using
 521 `company-frontends'.  If you want to start a specific back-end, call it
 522 interactively or use `company-begin-backend'.
 523
 524 regular keymap (`company-mode-map'):
 525
 526 \\{company-mode-map}
 527 keymap during active completions (`company-active-map'):
 528
 529 \\{company-active-map}"
 530   nil " comp" company-mode-map
 531   (if company-mode
 532       (progn
 533         (add-hook 'pre-command-hook 'company-pre-command nil t)
 534         (add-hook 'post-command-hook 'company-post-command nil t)
 535         (mapc 'company-init-backend company-backends))
 536     (remove-hook 'pre-command-hook 'company-pre-command t)
 537     (remove-hook 'post-command-hook 'company-post-command t)
 538     (company-cancel)
 539     (kill-local-variable 'company-point)))
 540
 541 (defsubst company-assert-enabled ()
 542   (unless company-mode
 543     (company-uninstall-map)
 544     (error "Company not enabled")))
 545
 546 ;;; keymaps ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 547
 548 (defvar company-overriding-keymap-bound nil)
 549 (make-variable-buffer-local 'company-overriding-keymap-bound)
 550
 551 (defvar company-old-keymap nil)
 552 (make-variable-buffer-local 'company-old-keymap)
 553
 554 (defvar company-my-keymap nil)
 555 (make-variable-buffer-local 'company-my-keymap)
 556
 557 (defsubst company-enable-overriding-keymap (keymap)
 558   (setq company-my-keymap keymap)
 559   (when company-overriding-keymap-bound
 560     (company-uninstall-map)))
 561
 562 (defun company-install-map ()
 563   (unless (or company-overriding-keymap-bound
 564               (null company-my-keymap))
 565     (setq company-old-keymap overriding-terminal-local-map
 566           overriding-terminal-local-map company-my-keymap
 567           company-overriding-keymap-bound t)))
 568
 569 (defun company-uninstall-map ()
 570   (when (eq overriding-terminal-local-map company-my-keymap)
 571     (setq overriding-terminal-local-map company-old-keymap
 572           company-overriding-keymap-bound nil)))
 573
 574 ;; Hack:
 575 ;; Emacs calculates the active keymaps before reading the event.  That means we
 576 ;; cannot change the keymap from a timer.  So we send a bogus command.
 577 (defun company-ignore ()
 578   (interactive)
 579   (setq this-command last-command))
 580
 581 (global-set-key '[31415926] 'company-ignore)
 582
 583 (defun company-input-noop ()
 584   (push 31415926 unread-command-events))
 585
 586 ;; Hack:
 587 ;; posn-col-row is incorrect in older Emacsen when line-spacing is set
 588 (defun company--col-row (&optional pos)
 589   (let ((posn (posn-at-point pos)))
 590     (cons (car (posn-col-row posn)) (cdr (posn-actual-col-row posn)))))
 591
 592 (defsubst company--column (&optional pos)
 593   (car (posn-col-row (posn-at-point pos))))
 594
 595 (defsubst company--row (&optional pos)
 596   (cdr (posn-actual-col-row (posn-at-point pos))))
 597
 598 ;;; backends ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 599
 600 (defun company-grab (regexp &optional expression limit)
 601   (when (looking-back regexp limit)
 602     (or (match-string-no-properties (or expression 0)) "")))
 603
 604 (defun company-grab-line (regexp &optional expression)
 605   (company-grab regexp expression (point-at-bol)))
 606
 607 (defun company-grab-symbol ()
 608   (if (looking-at "\\_>")
 609       (buffer-substring (point) (save-excursion (skip-syntax-backward "w_")
 610                                                 (point)))
 611     (unless (and (char-after) (memq (char-syntax (char-after)) '(?w ?_)))
 612       "")))
 613
 614 (defun company-grab-word ()
 615   (if (looking-at "\\>")
 616       (buffer-substring (point) (save-excursion (skip-syntax-backward "w")
 617                                                 (point)))
 618     (unless (and (char-after) (eq (char-syntax (char-after)) ?w))
 619       "")))
 620
 621 (defun company-in-string-or-comment ()
 622   (let ((ppss (syntax-ppss)))
 623     (or (car (setq ppss (nthcdr 3 ppss)))
 624         (car (setq ppss (cdr ppss)))
 625         (nth 3 ppss))))
 626
 627 (defun company-call-backend (&rest args)
 628   (if (functionp company-backend)
 629       (apply company-backend args)
 630     (apply 'company--multi-backend-adapter company-backend args)))
 631
 632 (defun company--multi-backend-adapter (backends command &rest args)
 633   (case command
 634     ('candidates
 635      (apply 'append (mapcar (lambda (backend) (apply backend command args))
 636                             backends)))
 637     ('sorted nil)
 638     ('duplicates t)
 639     (otherwise
 640      (let (value)
 641        (dolist (backend backends)
 642          (when (setq value (apply backend command args))
 643            (return value)))))))
 644
 645 ;;; completion mechanism ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 646
 647 (defvar company-backend nil)
 648 (make-variable-buffer-local 'company-backend)
 649
 650 (defvar company-prefix nil)
 651 (make-variable-buffer-local 'company-prefix)
 652
 653 (defvar company-candidates nil)
 654 (make-variable-buffer-local 'company-candidates)
 655
 656 (defvar company-candidates-length nil)
 657 (make-variable-buffer-local 'company-candidates-length)
 658
 659 (defvar company-candidates-cache nil)
 660 (make-variable-buffer-local 'company-candidates-cache)
 661
 662 (defvar company-candidates-predicate nil)
 663 (make-variable-buffer-local 'company-candidates-predicate)
 664
 665 (defvar company-common nil)
 666 (make-variable-buffer-local 'company-common)
 667
 668 (defvar company-selection 0)
 669 (make-variable-buffer-local 'company-selection)
 670
 671 (defvar company-selection-changed nil)
 672 (make-variable-buffer-local 'company-selection-changed)
 673
 674 (defvar company--explicit-action nil
 675   "Non-nil, if explicit completion took place.")
 676 (make-variable-buffer-local 'company--explicit-action)
 677
 678 (defvar company--point-max nil)
 679 (make-variable-buffer-local 'company--point-max)
 680
 681 (defvar company-point nil)
 682 (make-variable-buffer-local 'company-point)
 683
 684 (defvar company-timer nil)
 685
 686 (defvar company-added-newline nil)
 687 (make-variable-buffer-local 'company-added-newline)
 688
 689 (defsubst company-strip-prefix (str)
 690   (substring str (length company-prefix)))
 691
 692 (defun company-explicit-action-p ()
 693   "Return whether explicit completion action was taken by the user."
 694   (or company--explicit-action
 695       company-selection-changed))
 696
 697 (defsubst company-reformat (candidate)
 698   ;; company-ispell needs this, because the results are always lower-case
 699   ;; It's mory efficient to fix it only when they are displayed.
 700   (concat company-prefix (substring candidate (length company-prefix))))
 701
 702 (defun company--should-complete ()
 703   (and (not (or buffer-read-only overriding-terminal-local-map
 704                 overriding-local-map))
 705        (eq company-idle-delay t)
 706        (or (eq t company-begin-commands)
 707            (memq this-command company-begin-commands)
 708            (and (symbolp this-command) (get this-command 'company-begin)))
 709        (not (and transient-mark-mode mark-active))))
 710
 711 (defsubst company-call-frontends (command)
 712   (dolist (frontend company-frontends)
 713     (condition-case err
 714         (funcall frontend command)
 715       (error (error "Company: Front-end %s error \"%s\" on command %s"
 716                     frontend (error-message-string err) command)))))
 717
 718 (defsubst company-set-selection (selection &optional force-update)
 719   (setq selection (max 0 (min (1- company-candidates-length) selection)))
 720   (when (or force-update (not (equal selection company-selection)))
 721     (setq company-selection selection
 722           company-selection-changed t)
 723     (company-call-frontends 'update)))
 724
 725 (defun company-apply-predicate (candidates predicate)
 726   (let (new)
 727     (dolist (c candidates)
 728       (when (funcall predicate c)
 729         (push c new)))
 730     (nreverse new)))
 731
 732 (defun company-update-candidates (candidates)
 733   (setq company-candidates-length (length candidates))
 734   (if (> company-selection 0)
 735       ;; Try to restore the selection
 736       (let ((selected (nth company-selection company-candidates)))
 737         (setq company-selection 0
 738               company-candidates candidates)
 739         (when selected
 740           (while (and candidates (string< (pop candidates) selected))
 741             (incf company-selection))
 742           (unless candidates
 743             ;; Make sure selection isn't out of bounds.
 744             (setq company-selection (min (1- company-candidates-length)
 745                                          company-selection)))))
 746     (setq company-selection 0
 747           company-candidates candidates))
 748   ;; Save in cache:
 749   (push (cons company-prefix company-candidates) company-candidates-cache)
 750   ;; Calculate common.
 751   (let ((completion-ignore-case (company-call-backend 'ignore-case)))
 752     (setq company-common (try-completion company-prefix company-candidates)))
 753   (when (eq company-common t)
 754     (setq company-candidates nil)))
 755
 756 (defun company-calculate-candidates (prefix)
 757   (let ((candidates (cdr (assoc prefix company-candidates-cache))))
 758     (or candidates
 759         (when company-candidates-cache
 760           (let ((len (length prefix))
 761                 (completion-ignore-case (company-call-backend 'ignore-case))
 762                 prev)
 763             (dotimes (i (1+ len))
 764               (when (setq prev (cdr (assoc (substring prefix 0 (- len i))
 765                                            company-candidates-cache)))
 766                 (setq candidates (all-completions prefix prev))
 767                 (return t)))))
 768         ;; no cache match, call back-end
 769         (progn
 770           (setq candidates (company-call-backend 'candidates prefix))
 771           (when company-candidates-predicate
 772             (setq candidates
 773                   (company-apply-predicate candidates
 774                                            company-candidates-predicate)))
 775           (unless (company-call-backend 'sorted)
 776             (setq candidates (sort candidates 'string<)))
 777           (when (company-call-backend 'duplicates)
 778             ;; strip duplicates
 779             (let ((c2 candidates))
 780               (while c2
 781                 (setcdr c2 (progn (while (equal (pop c2) (car c2)))
 782                                   c2)))))))
 783     (if (or (cdr candidates)
 784             (not (equal (car candidates) prefix)))
 785         ;; Don't start when already completed and unique.
 786         candidates
 787       ;; Not the right place? maybe when setting?
 788       (and company-candidates t))))
 789
 790 (defun company-idle-begin (buf win tick pos)
 791   (and company-mode
 792        (eq buf (current-buffer))
 793        (eq win (selected-window))
 794        (eq tick (buffer-chars-modified-tick))
 795        (eq pos (point))
 796        (not company-candidates)
 797        (not (equal (point) company-point))
 798        (let ((company-idle-delay t)
 799              (company-begin-commands t))
 800          (company-begin)
 801          (when company-candidates
 802            (company-input-noop)
 803            (company-post-command)))))
 804
 805 (defun company-auto-begin ()
 806   (company-assert-enabled)
 807   (and company-mode
 808        (not company-candidates)
 809        (let ((company-idle-delay t)
 810              (company-minimum-prefix-length 0)
 811              (company-begin-commands t))
 812          (company-begin)))
 813   ;; Return non-nil if active.
 814   company-candidates)
 815
 816 (defun company-manual-begin ()
 817   (interactive)
 818   (setq company--explicit-action t)
 819   (company-auto-begin))
 820
 821 (defun company-require-match-p ()
 822   (let ((backend-value (company-call-backend 'require-match)))
 823     (or (eq backend-value t)
 824         (and (if (functionp company-require-match)
 825                  (funcall company-require-match)
 826                (eq company-require-match t))
 827              (not (eq backend-value 'never))))))
 828
 829 (defun company-punctuation-p (input)
 830   "Return non-nil, if input starts with punctuation or parentheses."
 831   (memq (char-syntax (string-to-char input)) '(?. ?\( ?\))))
 832
 833 (defun company-auto-complete-p (input)
 834   "Return non-nil, if input starts with punctuation or parentheses."
 835   (and (if (functionp company-auto-complete)
 836            (funcall company-auto-complete)
 837          company-auto-complete)
 838        (if (functionp company-auto-complete-chars)
 839            (funcall company-auto-complete-chars input)
 840          (if (consp company-auto-complete-chars)
 841              (memq (char-syntax (string-to-char input))
 842                    company-auto-complete-chars)
 843            (string-match (substring input 0 1) company-auto-complete-chars)))))
 844
 845 (defun company--incremental-p ()
 846   (and (> (point) company-point)
 847        (> (point-max) company--point-max)
 848        (not (eq this-command 'backward-delete-char-untabify))
 849        (equal (buffer-substring (- company-point (length company-prefix))
 850                                 company-point)
 851               company-prefix)))
 852
 853 (defsubst company--string-incremental-p (old-prefix new-prefix)
 854   (and (> (length new-prefix) (length old-prefix))
 855        (equal old-prefix (substring new-prefix 0 (length old-prefix)))))
 856
 857 (defun company--continue-failed (new-prefix)
 858   (when (company--incremental-p)
 859     (let ((input (buffer-substring-no-properties (point) company-point)))
 860       (cond
 861        ((company-auto-complete-p input)
 862         ;; auto-complete
 863         (save-excursion
 864           (goto-char company-point)
 865           (company-complete-selection)
 866           nil))
 867        ((and (company--string-incremental-p company-prefix new-prefix)
 868              (company-require-match-p))
 869         ;; wrong incremental input, but required match
 870         (backward-delete-char (length input))
 871         (ding)
 872         (message "Matching input is required")
 873         company-candidates)
 874        ((equal company-prefix (car company-candidates))
 875         ;; last input was actually success
 876         (company-cancel company-prefix)
 877         nil)))))
 878
 879 (defun company--continue ()
 880   (when (company-call-backend 'no-cache company-prefix)
 881     ;; Don't complete existing candidates, fetch new ones.
 882     (setq company-candidates-cache nil))
 883   (let* ((new-prefix (company-call-backend 'prefix))
 884          (c (when (and (stringp new-prefix)
 885                        (or (company-explicit-action-p)
 886                            (>= (length new-prefix)
 887                                company-minimum-prefix-length))
 888                        (= (- (point) (length new-prefix))
 889                           (- company-point (length company-prefix))))
 890               (company-calculate-candidates new-prefix))))
 891     (or (cond
 892          ((eq c t)
 893           ;; t means complete/unique.
 894           (company-cancel new-prefix)
 895           nil)
 896          ((consp c)
 897           ;; incremental match
 898           (setq company-prefix new-prefix)
 899           (company-update-candidates c)
 900           c)
 901          (t (company--continue-failed new-prefix)))
 902         (company-cancel))))
 903
 904 (defun company--begin-new ()
 905   (let (prefix c)
 906     (dolist (backend (if company-backend
 907                          ;; prefer manual override
 908                          (list company-backend)
 909                        company-backends))
 910       (setq prefix
 911             (if (or (symbolp backend)
 912                     (functionp backend))
 913                 (when (or (not (symbolp backend))
 914                           (eq t (get backend 'company-init))
 915                           (unless (get backend 'company-init)
 916                             (company-init-backend backend)))
 917                   (funcall backend 'prefix))
 918               (company--multi-backend-adapter backend 'prefix)))
 919       (when prefix
 920         (when (and (stringp prefix)
 921                    (>= (length prefix) company-minimum-prefix-length))
 922           (setq company-backend backend
 923                 c (company-calculate-candidates prefix))
 924           ;; t means complete/unique.  We don't start, so no hooks.
 925           (when (consp c)
 926             (setq company-prefix prefix)
 927             (company-update-candidates c)
 928             (run-hook-with-args 'company-completion-started-hook
 929                                 (company-explicit-action-p))
 930             (company-call-frontends 'show)))
 931         (return c)))))
 932
 933 (defun company-begin ()
 934   (setq company-candidates
 935         (or (and company-candidates (company--continue))
 936             (and (company--should-complete) (company--begin-new))))
 937   (when company-candidates
 938     (when (and company-end-of-buffer-workaround (eobp))
 939       (save-excursion (insert "\n"))
 940       (setq company-added-newline (buffer-chars-modified-tick)))
 941     (setq company-point (point)
 942           company--point-max (point-max))
 943     (company-enable-overriding-keymap company-active-map)
 944     (company-call-frontends 'update)))
 945
 946 (defun company-cancel (&optional result)
 947   (and company-added-newline
 948        (> (point-max) (point-min))
 949        (let ((tick (buffer-chars-modified-tick)))
 950          (delete-region (1- (point-max)) (point-max))
 951          (equal tick company-added-newline))
 952        ;; Only set unmodified when tick remained the same since insert.
 953        (set-buffer-modified-p nil))
 954   (when company-prefix
 955     (if (stringp result)
 956         (run-hook-with-args 'company-completion-finished-hook result)
 957       (run-hook-with-args 'company-completion-cancelled-hook result)))
 958   (setq company-added-newline nil
 959         company-backend nil
 960         company-prefix nil
 961         company-candidates nil
 962         company-candidates-length nil
 963         company-candidates-cache nil
 964         company-candidates-predicate nil
 965         company-common nil
 966         company-selection 0
 967         company-selection-changed nil
 968         company--explicit-action nil
 969         company--point-max nil
 970         company-point nil)
 971   (when company-timer
 972     (cancel-timer company-timer))
 973   (company-search-mode 0)
 974   (company-call-frontends 'hide)
 975   (company-enable-overriding-keymap nil))
 976
 977 (defun company-abort ()
 978   (interactive)
 979   (company-cancel t)
 980   ;; Don't start again, unless started manually.
 981   (setq company-point (point)))
 982
 983 (defun company-finish (result)
 984   (insert (company-strip-prefix result))
 985   (company-cancel result)
 986   ;; Don't start again, unless started manually.
 987   (setq company-point (point)))
 988
 989 (defsubst company-keep (command)
 990   (and (symbolp command) (get command 'company-keep)))
 991
 992 (defun company-pre-command ()
 993   (unless (company-keep this-command)
 994     (condition-case err
 995         (when company-candidates
 996           (company-call-frontends 'pre-command))
 997       (error (message "Company: An error occurred in pre-command")
 998              (message "%s" (error-message-string err))
 999              (company-cancel))))
1000   (when company-timer
1001     (cancel-timer company-timer)
1002     (setq company-timer nil))
1003   (company-uninstall-map))
1004
1005 (defun company-post-command ()
1006   (unless (company-keep this-command)
1007     (condition-case err
1008         (progn
1009           (unless (equal (point) company-point)
1010             (company-begin))
1011           (if company-candidates
1012               (company-call-frontends 'post-command)
1013             (and (numberp company-idle-delay)
1014                  (or (eq t company-begin-commands)
1015                      (memq this-command company-begin-commands))
1016                  (setq company-timer
1017                        (run-with-timer company-idle-delay nil
1018                                        'company-idle-begin
1019                                        (current-buffer) (selected-window)
1020                                        (buffer-chars-modified-tick) (point))))))
1021       (error (message "Company: An error occurred in post-command")
1022              (message "%s" (error-message-string err))
1023              (company-cancel))))
1024   (company-install-map))
1025
1026 ;;; search ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1027
1028 (defvar company-search-string nil)
1029 (make-variable-buffer-local 'company-search-string)
1030
1031 (defvar company-search-lighter " Search: \"\"")
1032 (make-variable-buffer-local 'company-search-lighter)
1033
1034 (defvar company-search-old-map nil)
1035 (make-variable-buffer-local 'company-search-old-map)
1036
1037 (defvar company-search-old-selection 0)
1038 (make-variable-buffer-local 'company-search-old-selection)
1039
1040 (defun company-search (text lines)
1041   (let ((quoted (regexp-quote text))
1042         (i 0))
1043     (dolist (line lines)
1044       (when (string-match quoted line (length company-prefix))
1045         (return i))
1046       (incf i))))
1047
1048 (defun company-search-printing-char ()
1049   (interactive)
1050   (company-search-assert-enabled)
1051   (setq company-search-string
1052         (concat (or company-search-string "") (string last-command-event))
1053         company-search-lighter (concat " Search: \"" company-search-string
1054                                         "\""))
1055   (let ((pos (company-search company-search-string
1056                               (nthcdr company-selection company-candidates))))
1057     (if (null pos)
1058         (ding)
1059       (company-set-selection (+ company-selection pos) t))))
1060
1061 (defun company-search-repeat-forward ()
1062   "Repeat the incremental search in completion candidates forward."
1063   (interactive)
1064   (company-search-assert-enabled)
1065   (let ((pos (company-search company-search-string
1066                               (cdr (nthcdr company-selection
1067                                            company-candidates)))))
1068     (if (null pos)
1069         (ding)
1070       (company-set-selection (+ company-selection pos 1) t))))
1071
1072 (defun company-search-repeat-backward ()
1073   "Repeat the incremental search in completion candidates backwards."
1074   (interactive)
1075   (company-search-assert-enabled)
1076   (let ((pos (company-search company-search-string
1077                               (nthcdr (- company-candidates-length
1078                                          company-selection)
1079                                       (reverse company-candidates)))))
1080     (if (null pos)
1081         (ding)
1082       (company-set-selection (- company-selection pos 1) t))))
1083
1084 (defun company-create-match-predicate ()
1085   (setq company-candidates-predicate
1086         `(lambda (candidate)
1087            ,(if company-candidates-predicate
1088                 `(and (string-match ,company-search-string candidate)
1089                       (funcall ,company-candidates-predicate
1090                                candidate))
1091               `(string-match ,company-search-string candidate))))
1092   (company-update-candidates
1093    (company-apply-predicate company-candidates company-candidates-predicate))
1094   ;; Invalidate cache.
1095   (setq company-candidates-cache (cons company-prefix company-candidates)))
1096
1097 (defun company-filter-printing-char ()
1098   (interactive)
1099   (company-search-assert-enabled)
1100   (company-search-printing-char)
1101   (company-create-match-predicate)
1102   (company-call-frontends 'update))
1103
1104 (defun company-search-kill-others ()
1105   "Limit the completion candidates to the ones matching the search string."
1106   (interactive)
1107   (company-search-assert-enabled)
1108   (company-create-match-predicate)
1109   (company-search-mode 0)
1110   (company-call-frontends 'update))
1111
1112 (defun company-search-abort ()
1113   "Abort searching the completion candidates."
1114   (interactive)
1115   (company-search-assert-enabled)
1116   (company-set-selection company-search-old-selection t)
1117   (company-search-mode 0))
1118
1119 (defun company-search-other-char ()
1120   (interactive)
1121   (company-search-assert-enabled)
1122   (company-search-mode 0)
1123   (when last-input-event
1124     (clear-this-command-keys t)
1125     (setq unread-command-events (list last-input-event))))
1126
1127 (defvar company-search-map
1128   (let ((i 0)
1129         (keymap (make-keymap)))
1130     (if (fboundp 'max-char)
1131         (set-char-table-range (nth 1 keymap) (cons #x100 (max-char))
1132                               'company-search-printing-char)
1133       (with-no-warnings
1134         ;; obselete in Emacs 23
1135         (let ((l (generic-character-list))
1136               (table (nth 1 keymap)))
1137           (while l
1138             (set-char-table-default table (car l) 'company-search-printing-char)
1139             (setq l (cdr l))))))
1140     (define-key keymap [t] 'company-search-other-char)
1141     (while (< i ?\s)
1142       (define-key keymap (make-string 1 i) 'company-search-other-char)
1143       (incf i))
1144     (while (< i 256)
1145       (define-key keymap (vector i) 'company-search-printing-char)
1146       (incf i))
1147     (let ((meta-map (make-sparse-keymap)))
1148       (define-key keymap (char-to-string meta-prefix-char) meta-map)
1149       (define-key keymap [escape] meta-map))
1150     (define-key keymap (vector meta-prefix-char t) 'company-search-other-char)
1151     (define-key keymap "\e\e\e" 'company-search-other-char)
1152     (define-key keymap  [escape escape escape] 'company-search-other-char)
1153
1154     (define-key keymap "\C-g" 'company-search-abort)
1155     (define-key keymap "\C-s" 'company-search-repeat-forward)
1156     (define-key keymap "\C-r" 'company-search-repeat-backward)
1157     (define-key keymap "\C-o" 'company-search-kill-others)
1158     keymap)
1159   "Keymap used for incrementally searching the completion candidates.")
1160
1161 (define-minor-mode company-search-mode
1162   "Search mode for completion candidates.
1163 Don't start this directly, use `company-search-candidates' or
1164 `company-filter-candidates'."
1165   nil company-search-lighter nil
1166   (if company-search-mode
1167       (if (company-manual-begin)
1168           (progn
1169             (setq company-search-old-selection company-selection)
1170             (company-call-frontends 'update))
1171         (setq company-search-mode nil))
1172     (kill-local-variable 'company-search-string)
1173     (kill-local-variable 'company-search-lighter)
1174     (kill-local-variable 'company-search-old-selection)
1175     (company-enable-overriding-keymap company-active-map)))
1176
1177 (defsubst company-search-assert-enabled ()
1178   (company-assert-enabled)
1179   (unless company-search-mode
1180     (company-uninstall-map)
1181     (error "Company not in search mode")))
1182
1183 (defun company-search-candidates ()
1184   "Start searching the completion candidates incrementally.
1185
1186 \\<company-search-map>Search can be controlled with the commands:
1187 - `company-search-repeat-forward' (\\[company-search-repeat-forward])
1188 - `company-search-repeat-backward' (\\[company-search-repeat-backward])
1189 - `company-search-abort' (\\[company-search-abort])
1190
1191 Regular characters are appended to the search string.
1192
1193 The command `company-search-kill-others' (\\[company-search-kill-others]) uses
1194  the search string to limit the completion candidates."
1195   (interactive)
1196   (company-search-mode 1)
1197   (company-enable-overriding-keymap company-search-map))
1198
1199 (defvar company-filter-map
1200   (let ((keymap (make-keymap)))
1201     (define-key keymap [remap company-search-printing-char]
1202       'company-filter-printing-char)
1203     (set-keymap-parent keymap company-search-map)
1204     keymap)
1205   "Keymap used for incrementally searching the completion candidates.")
1206
1207 (defun company-filter-candidates ()
1208   "Start filtering the completion candidates incrementally.
1209 This works the same way as `company-search-candidates' immediately
1210 followed by `company-search-kill-others' after each input."
1211   (interactive)
1212   (company-search-mode 1)
1213   (company-enable-overriding-keymap company-filter-map))
1214
1215 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1216
1217 (defun company-select-next ()
1218   "Select the next candidate in the list."
1219   (interactive)
1220   (when (company-manual-begin)
1221     (company-set-selection (1+ company-selection))))
1222
1223 (defun company-select-previous ()
1224   "Select the previous candidate in the list."
1225   (interactive)
1226   (when (company-manual-begin)
1227     (company-set-selection (1- company-selection))))
1228
1229 (defun company-select-mouse (event)
1230   "Select the candidate picked by the mouse."
1231   (interactive "e")
1232   (when (nth 4 (event-start event))
1233     (company-set-selection (- (cdr (posn-actual-col-row (event-start event)))
1234                               (company--row)
1235                               1))
1236     t))
1237
1238 (defun company-complete-mouse (event)
1239   "Complete the candidate picked by the mouse."
1240   (interactive "e")
1241   (when (company-select-mouse event)
1242     (company-complete-selection)))
1243
1244 (defun company-complete-selection ()
1245   "Complete the selected candidate."
1246   (interactive)
1247   (when (company-manual-begin)
1248     (company-finish (nth company-selection company-candidates))))
1249
1250 (defun company-complete-common ()
1251   "Complete the common part of all candidates."
1252   (interactive)
1253   (when (company-manual-begin)
1254     (if (and (not (cdr company-candidates))
1255              (equal company-common (car company-candidates)))
1256         (company-complete-selection)
1257       (insert (company-strip-prefix company-common)))))
1258
1259 (defun company-complete ()
1260   "Complete the common part of all candidates or the current selection.
1261 The first time this is called, the common part is completed, the second time, or
1262 when the selection has been changed, the selected candidate is completed."
1263   (interactive)
1264   (when (company-manual-begin)
1265     (if (or company-selection-changed
1266             (eq last-command 'company-complete-common))
1267         (call-interactively 'company-complete-selection)
1268       (call-interactively 'company-complete-common)
1269       (setq this-command 'company-complete-common))))
1270
1271 (defun company-complete-number (n)
1272   "Complete the Nth candidate.
1273 To show the number next to the candidates in some back-ends, enable
1274 `company-show-numbers'."
1275   (when (company-manual-begin)
1276     (and (< n 1) (> n company-candidates-length)
1277          (error "No candidate number %d" n))
1278     (decf n)
1279     (company-finish (nth n company-candidates))))
1280
1281 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1282
1283 (defconst company-space-strings-limit 100)
1284
1285 (defconst company-space-strings
1286   (let (lst)
1287     (dotimes (i company-space-strings-limit)
1288       (push (make-string (- company-space-strings-limit 1 i) ?\  ) lst))
1289     (apply 'vector lst)))
1290
1291 (defsubst company-space-string (len)
1292   (if (< len company-space-strings-limit)
1293       (aref company-space-strings len)
1294     (make-string len ?\ )))
1295
1296 (defsubst company-safe-substring (str from &optional to)
1297   (let ((len (length str)))
1298     (if (> from len)
1299         ""
1300       (if (and to (> to len))
1301           (concat (substring str from)
1302                   (company-space-string (- to len)))
1303         (substring str from to)))))
1304
1305 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1306
1307 (defvar company-last-metadata nil)
1308 (make-variable-buffer-local 'company-last-metadata)
1309
1310 (defun company-fetch-metadata ()
1311   (let ((selected (nth company-selection company-candidates)))
1312     (unless (equal selected (car company-last-metadata))
1313       (setq company-last-metadata
1314             (cons selected (company-call-backend 'meta selected))))
1315     (cdr company-last-metadata)))
1316
1317 (defun company-doc-buffer (&optional string)
1318   (with-current-buffer (get-buffer-create "*Company meta-data*")
1319     (erase-buffer)
1320     (current-buffer)))
1321
1322 (defmacro company-electric (&rest body)
1323   (declare (indent 0) (debug t))
1324   `(when (company-manual-begin)
1325      (save-window-excursion
1326        (let ((height (window-height))
1327              (row (company--row)))
1328          ,@body
1329          (and (< (window-height) height)
1330               (< (- (window-height) row 2) company-tooltip-limit)
1331               (recenter (- (window-height) row 2)))
1332          (while (eq 'scroll-other-window
1333                     (key-binding (vector (list (read-event)))))
1334            (call-interactively 'scroll-other-window))
1335          (when last-input-event
1336            (clear-this-command-keys t)
1337            (setq unread-command-events (list last-input-event)))))))
1338
1339 (defun company-show-doc-buffer ()
1340   "Temporarily show a buffer with the complete documentation for the selection."
1341   (interactive)
1342   (company-electric
1343     (let ((selected (nth company-selection company-candidates)))
1344       (display-buffer (or (company-call-backend 'doc-buffer selected)
1345                           (error "No documentation available")) t))))
1346 (put 'company-show-doc-buffer 'company-keep t)
1347
1348 (defun company-show-location ()
1349   "Temporarily display a buffer showing the selected candidate in context."
1350   (interactive)
1351   (company-electric
1352     (let* ((selected (nth company-selection company-candidates))
1353            (location (company-call-backend 'location selected))
1354            (pos (or (cdr location) (error "No location available")))
1355            (buffer (or (and (bufferp (car location)) (car location))
1356                        (find-file-noselect (car location) t))))
1357       (with-selected-window (display-buffer buffer t)
1358         (if (bufferp (car location))
1359             (goto-char pos)
1360           (goto-line pos))
1361         (set-window-start nil (point))))))
1362 (put 'company-show-location 'company-keep t)
1363
1364 ;;; package functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1365
1366 (defvar company-callback nil)
1367 (make-variable-buffer-local 'company-callback)
1368
1369 (defvar company-begin-with-marker nil)
1370 (make-variable-buffer-local 'company-begin-with-marker)
1371
1372 (defun company-remove-callback (&optional ignored)
1373   (remove-hook 'company-completion-finished-hook company-callback t)
1374   (remove-hook 'company-completion-cancelled-hook 'company-remove-callback t)
1375   (remove-hook 'company-completion-finished-hook 'company-remove-callback t)
1376   (set-marker company-begin-with-marker nil))
1377
1378 (defun company-begin-backend (backend &optional callback)
1379   "Start a completion at point using BACKEND."
1380   (interactive (let ((val (completing-read "Company back-end: "
1381                                            obarray
1382                                            'functionp nil "company-")))
1383                  (when val
1384                    (list (intern val)))))
1385   (when (setq company-callback callback)
1386     (add-hook 'company-completion-finished-hook company-callback nil t))
1387   (add-hook 'company-completion-cancelled-hook 'company-remove-callback nil t)
1388   (add-hook 'company-completion-finished-hook 'company-remove-callback nil t)
1389   (setq company-backend backend)
1390   ;; Return non-nil if active.
1391   (or (company-manual-begin)
1392       (error "Cannot complete at point")))
1393
1394 (defun company-begin-with (candidates
1395                            &optional prefix-length require-match callback)
1396   "Start a completion at point.
1397 CANDIDATES is the list of candidates to use and PREFIX-LENGTH is the length of
1398 the prefix that already is in the buffer before point.  It defaults to 0.
1399
1400 CALLBACK is a function called with the selected result if the user successfully
1401 completes the input.
1402
1403 Example:
1404 \(company-begin-with '\(\"foo\" \"foobar\" \"foobarbaz\"\)\)"
1405   (setq company-begin-with-marker (copy-marker (point) t))
1406   (company-begin-backend
1407    `(lambda (command &optional arg &rest ignored)
1408       (cond
1409        ((eq command 'prefix)
1410         (when (equal (point) (marker-position company-begin-with-marker))
1411           (buffer-substring ,(- (point) (or prefix-length 0)) (point))))
1412        ((eq command 'candidates)
1413         (all-completions arg ',candidates))
1414        ((eq command 'require-match)
1415         ,require-match)))
1416    callback))
1417
1418 ;;; pseudo-tooltip ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1419
1420 (defvar company-pseudo-tooltip-overlay nil)
1421 (make-variable-buffer-local 'company-pseudo-tooltip-overlay)
1422
1423 (defvar company-tooltip-offset 0)
1424 (make-variable-buffer-local 'company-tooltip-offset)
1425
1426 (defun company-pseudo-tooltip-update-offset (selection num-lines limit)
1427
1428   (decf limit 2)
1429   (setq company-tooltip-offset
1430         (max (min selection company-tooltip-offset)
1431              (- selection -1 limit)))
1432
1433   (when (<= company-tooltip-offset 1)
1434     (incf limit)
1435     (setq company-tooltip-offset 0))
1436
1437   (when (>= company-tooltip-offset (- num-lines limit 1))
1438     (incf limit)
1439     (when (= selection (1- num-lines))
1440       (decf company-tooltip-offset)
1441       (when (<= company-tooltip-offset 1)
1442         (setq company-tooltip-offset 0)
1443         (incf limit))))
1444
1445   limit)
1446
1447 ;;; propertize
1448
1449 (defsubst company-round-tab (arg)
1450   (* (/ (+ arg tab-width) tab-width) tab-width))
1451
1452 (defun company-untabify (str)
1453   (let* ((pieces (split-string str "\t"))
1454          (copy pieces))
1455     (while (cdr copy)
1456       (setcar copy (company-safe-substring
1457                     (car copy) 0 (company-round-tab (string-width (car copy)))))
1458       (pop copy))
1459     (apply 'concat pieces)))
1460
1461 (defun company-fill-propertize (line width selected)
1462   (setq line (company-safe-substring line 0 width))
1463   (add-text-properties 0 width '(face company-tooltip
1464                                  mouse-face company-tooltip-mouse)
1465                        line)
1466   (add-text-properties 0 (length company-common)
1467                        '(face company-tooltip-common
1468                          mouse-face company-tooltip-mouse)
1469                        line)
1470   (when selected
1471     (if (and company-search-string
1472              (string-match (regexp-quote company-search-string) line
1473                            (length company-prefix)))
1474         (progn
1475           (add-text-properties (match-beginning 0) (match-end 0)
1476                                '(face company-tooltip-selection)
1477                                line)
1478           (when (< (match-beginning 0) (length company-common))
1479             (add-text-properties (match-beginning 0) (length company-common)
1480                                  '(face company-tooltip-common-selection)
1481                                  line)))
1482       (add-text-properties 0 width '(face company-tooltip-selection
1483                                           mouse-face company-tooltip-selection)
1484                            line)
1485       (add-text-properties 0 (length company-common)
1486                            '(face company-tooltip-common-selection
1487                              mouse-face company-tooltip-selection)
1488                            line)))
1489   line)
1490
1491 ;;; replace
1492
1493 (defun company-buffer-lines (beg end)
1494   (goto-char beg)
1495   (let ((row (company--row))
1496         lines)
1497     (while (and (equal (move-to-window-line (incf row)) row)
1498                 (<= (point) end))
1499       (push (buffer-substring beg (min end (1- (point)))) lines)
1500       (setq beg (point)))
1501     (unless (eq beg end)
1502       (push (buffer-substring beg end) lines))
1503     (nreverse lines)))
1504
1505 (defsubst company-modify-line (old new offset)
1506   (concat (company-safe-substring old 0 offset)
1507           new
1508           (company-safe-substring old (+ offset (length new)))))
1509
1510 (defun company-replacement-string (old lines column nl)
1511   (let (new)
1512     ;; Inject into old lines.
1513     (while old
1514       (push (company-modify-line (pop old) (pop lines) column) new))
1515     ;; Append whole new lines.
1516     (while lines
1517       (push (concat (company-space-string column) (pop lines)) new))
1518     (concat (when nl "\n")
1519             (mapconcat 'identity (nreverse new) "\n")
1520             "\n")))
1521
1522 (defun company-create-lines (column selection limit)
1523
1524   (let ((len company-candidates-length)
1525         (numbered 99999)
1526         lines
1527         width
1528         lines-copy
1529         previous
1530         remainder
1531         new)
1532
1533     ;; Scroll to offset.
1534     (setq limit (company-pseudo-tooltip-update-offset selection len limit))
1535
1536     (when (> company-tooltip-offset 0)
1537       (setq previous (format "...(%d)" company-tooltip-offset)))
1538
1539     (setq remainder (- len limit company-tooltip-offset)
1540           remainder (when (> remainder 0)
1541                       (setq remainder (format "...(%d)" remainder))))
1542
1543     (decf selection company-tooltip-offset)
1544     (setq width (max (length previous) (length remainder))
1545           lines (nthcdr company-tooltip-offset company-candidates)
1546           len (min limit len)
1547           lines-copy lines)
1548
1549     (dotimes (i len)
1550       (setq width (max (length (pop lines-copy)) width)))
1551     (setq width (min width (- (window-width) column)))
1552
1553     (setq lines-copy lines)
1554
1555     ;; number can make tooltip too long
1556     (when company-show-numbers
1557       (setq numbered company-tooltip-offset))
1558
1559     (when previous
1560       (push (propertize (company-safe-substring previous 0 width)
1561                         'face 'company-tooltip)
1562             new))
1563
1564     (dotimes (i len)
1565       (push (company-fill-propertize
1566              (if (>= numbered 10)
1567                  (company-reformat (pop lines))
1568                (incf numbered)
1569                (format "%s %d"
1570                        (company-safe-substring (company-reformat (pop lines))
1571                                                0 (- width 2))
1572                        (mod numbered 10)))
1573              width (equal i selection))
1574             new))
1575
1576     (when remainder
1577       (push (propertize (company-safe-substring remainder 0 width)
1578                         'face 'company-tooltip)
1579             new))
1580
1581     (setq lines (nreverse new))))
1582
1583 ;; show
1584
1585 (defsubst company-pseudo-tooltip-height ()
1586   "Calculate the appropriate tooltip height."
1587   (max 3 (min company-tooltip-limit
1588               (- (window-height) 2
1589                  (count-lines (window-start) (point-at-bol))))))
1590
1591 (defun company-pseudo-tooltip-show (row column selection)
1592   (company-pseudo-tooltip-hide)
1593   (save-excursion
1594
1595     (move-to-column 0)
1596
1597     (let* ((height (company-pseudo-tooltip-height))
1598            (lines (company-create-lines column selection height))
1599            (nl (< (move-to-window-line row) row))
1600            (beg (point))
1601            (end (save-excursion
1602                   (move-to-window-line (+ row height))
1603                   (point)))
1604            (old-string
1605             (mapcar 'company-untabify (company-buffer-lines beg end)))
1606            str)
1607
1608       (setq company-pseudo-tooltip-overlay (make-overlay beg end))
1609
1610       (overlay-put company-pseudo-tooltip-overlay 'company-old old-string)
1611       (overlay-put company-pseudo-tooltip-overlay 'company-column column)
1612       (overlay-put company-pseudo-tooltip-overlay 'company-nl nl)
1613       (overlay-put company-pseudo-tooltip-overlay 'company-before
1614                    (company-replacement-string old-string lines column nl))
1615       (overlay-put company-pseudo-tooltip-overlay 'company-height height)
1616
1617       (overlay-put company-pseudo-tooltip-overlay 'window (selected-window)))))
1618
1619 (defun company-pseudo-tooltip-show-at-point (pos)
1620   (let ((col-row (company--col-row pos)))
1621     (when col-row
1622       (company-pseudo-tooltip-show (1+ (cdr col-row)) (car col-row)
1623                                    company-selection))))
1624
1625 (defun company-pseudo-tooltip-edit (lines selection)
1626   (let* ((old-string (overlay-get company-pseudo-tooltip-overlay 'company-old))
1627          (column (overlay-get company-pseudo-tooltip-overlay 'company-column))
1628          (nl (overlay-get company-pseudo-tooltip-overlay 'company-nl))
1629          (height (overlay-get company-pseudo-tooltip-overlay 'company-height))
1630          (lines (company-create-lines column selection height)))
1631     (overlay-put company-pseudo-tooltip-overlay 'company-before
1632                  (company-replacement-string old-string lines column nl))))
1633
1634 (defun company-pseudo-tooltip-hide ()
1635   (when company-pseudo-tooltip-overlay
1636     (delete-overlay company-pseudo-tooltip-overlay)
1637     (setq company-pseudo-tooltip-overlay nil)))
1638
1639 (defun company-pseudo-tooltip-hide-temporarily ()
1640   (when (overlayp company-pseudo-tooltip-overlay)
1641     (overlay-put company-pseudo-tooltip-overlay 'invisible nil)
1642     (overlay-put company-pseudo-tooltip-overlay 'before-string nil)))
1643
1644 (defun company-pseudo-tooltip-unhide ()
1645   (when company-pseudo-tooltip-overlay
1646     (overlay-put company-pseudo-tooltip-overlay 'invisible t)
1647     (overlay-put company-pseudo-tooltip-overlay 'before-string
1648                  (overlay-get company-pseudo-tooltip-overlay 'company-before))
1649     (overlay-put company-pseudo-tooltip-overlay 'window (selected-window))))
1650
1651 (defun company-pseudo-tooltip-frontend (command)
1652   "A `company-mode' front-end similar to a tool-tip but based on overlays."
1653   (case command
1654     ('pre-command (company-pseudo-tooltip-hide-temporarily))
1655     ('post-command
1656      (unless (and (overlayp company-pseudo-tooltip-overlay)
1657                   (equal (overlay-get company-pseudo-tooltip-overlay
1658                                       'company-height)
1659                          (company-pseudo-tooltip-height)))
1660        ;; Redraw needed.
1661        (company-pseudo-tooltip-show-at-point (- (point)
1662                                                 (length company-prefix))))
1663      (company-pseudo-tooltip-unhide))
1664     ('hide (company-pseudo-tooltip-hide)
1665            (setq company-tooltip-offset 0))
1666     ('update (when (overlayp company-pseudo-tooltip-overlay)
1667                (company-pseudo-tooltip-edit company-candidates
1668                                             company-selection)))))
1669
1670 (defun company-pseudo-tooltip-unless-just-one-frontend (command)
1671   "`company-pseudo-tooltip-frontend', but not shown for single candidates."
1672   (unless (and (eq command 'post-command)
1673                (not (cdr company-candidates)))
1674     (company-pseudo-tooltip-frontend command)))
1675
1676 ;;; overlay ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1677
1678 (defvar company-preview-overlay nil)
1679 (make-variable-buffer-local 'company-preview-overlay)
1680
1681 (defun company-preview-show-at-point (pos)
1682   (company-preview-hide)
1683
1684   (setq company-preview-overlay (make-overlay pos pos))
1685
1686   (let ((completion(nth company-selection company-candidates)))
1687     (setq completion (propertize completion 'face 'company-preview))
1688     (add-text-properties 0 (length company-common)
1689                          '(face company-preview-common) completion)
1690
1691     ;; Add search string
1692     (and company-search-string
1693          (string-match (regexp-quote company-search-string) completion)
1694          (add-text-properties (match-beginning 0)
1695                               (match-end 0)
1696                               '(face company-preview-search)
1697                               completion))
1698
1699     (setq completion (company-strip-prefix completion))
1700
1701     (and (equal pos (point))
1702          (not (equal completion ""))
1703          (add-text-properties 0 1 '(cursor t) completion))
1704
1705     (overlay-put company-preview-overlay 'after-string completion)
1706     (overlay-put company-preview-overlay 'window (selected-window))))
1707
1708 (defun company-preview-hide ()
1709   (when company-preview-overlay
1710     (delete-overlay company-preview-overlay)
1711     (setq company-preview-overlay nil)))
1712
1713 (defun company-preview-frontend (command)
1714   "A `company-mode' front-end showing the selection as if it had been inserted."
1715   (case command
1716     ('pre-command (company-preview-hide))
1717     ('post-command (company-preview-show-at-point (point)))
1718     ('hide (company-preview-hide))))
1719
1720 (defun company-preview-if-just-one-frontend (command)
1721   "`company-preview-frontend', but only shown for single candidates."
1722   (unless (and (eq command 'post-command)
1723                (cdr company-candidates))
1724     (company-preview-frontend command)))
1725
1726 ;;; echo ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1727
1728 (defvar company-echo-last-msg nil)
1729 (make-variable-buffer-local 'company-echo-last-msg)
1730
1731 (defvar company-echo-timer nil)
1732
1733 (defvar company-echo-delay .1)
1734
1735 (defun company-echo-show (&optional getter)
1736   (when getter
1737     (setq company-echo-last-msg (funcall getter)))
1738   (let ((message-log-max nil))
1739     (if company-echo-last-msg
1740         (message "%s" company-echo-last-msg)
1741       (message ""))))
1742
1743 (defsubst company-echo-show-soon (&optional getter)
1744   (when company-echo-timer
1745     (cancel-timer company-echo-timer))
1746   (setq company-echo-timer (run-with-timer company-echo-delay nil
1747                                            'company-echo-show getter)))
1748
1749 (defun company-echo-format ()
1750
1751   (let ((limit (window-width (minibuffer-window)))
1752         (len -1)
1753         ;; Roll to selection.
1754         (candidates (nthcdr company-selection company-candidates))
1755         (i (if company-show-numbers company-selection 99999))
1756         comp msg)
1757
1758     (while candidates
1759       (setq comp (company-reformat (pop candidates))
1760             len (+ len 1 (length comp)))
1761       (if (< i 10)
1762           ;; Add number.
1763           (progn
1764             (setq comp (propertize (format "%d: %s" i comp)
1765                                    'face 'company-echo))
1766             (incf len 3)
1767             (incf i)
1768             (add-text-properties 3 (+ 3 (length company-common))
1769                                  '(face company-echo-common) comp))
1770         (setq comp (propertize comp 'face 'company-echo))
1771         (add-text-properties 0 (length company-common)
1772                              '(face company-echo-common) comp))
1773       (if (>= len limit)
1774           (setq candidates nil)
1775         (push comp msg)))
1776
1777     (mapconcat 'identity (nreverse msg) " ")))
1778
1779 (defun company-echo-strip-common-format ()
1780
1781   (let ((limit (window-width (minibuffer-window)))
1782         (len (+ (length company-prefix) 2))
1783         ;; Roll to selection.
1784         (candidates (nthcdr company-selection company-candidates))
1785         (i (if company-show-numbers company-selection 99999))
1786         msg comp)
1787
1788     (while candidates
1789       (setq comp (company-strip-prefix (pop candidates))
1790             len (+ len 2 (length comp)))
1791       (when (< i 10)
1792         ;; Add number.
1793         (setq comp (format "%s (%d)" comp i))
1794         (incf len 4)
1795         (incf i))
1796       (if (>= len limit)
1797           (setq candidates nil)
1798         (push (propertize comp 'face 'company-echo) msg)))
1799
1800     (concat (propertize company-prefix 'face 'company-echo-common) "{"
1801             (mapconcat 'identity (nreverse msg) ", ")
1802             "}")))
1803
1804 (defun company-echo-hide ()
1805   (when company-echo-timer
1806     (cancel-timer company-echo-timer))
1807   (unless (equal company-echo-last-msg "")
1808     (setq company-echo-last-msg "")
1809     (company-echo-show)))
1810
1811 (defun company-echo-frontend (command)
1812   "A `company-mode' front-end showing the candidates in the echo area."
1813   (case command
1814     ('pre-command (company-echo-show-soon))
1815     ('post-command (company-echo-show-soon 'company-echo-format))
1816     ('hide (company-echo-hide))))
1817
1818 (defun company-echo-strip-common-frontend (command)
1819   "A `company-mode' front-end showing the candidates in the echo area."
1820   (case command
1821     ('pre-command (company-echo-show-soon))
1822     ('post-command (company-echo-show-soon 'company-echo-strip-common-format))
1823     ('hide (company-echo-hide))))
1824
1825 (defun company-echo-metadata-frontend (command)
1826   "A `company-mode' front-end showing the documentation in the echo area."
1827   (case command
1828     ('pre-command (company-echo-show-soon))
1829     ('post-command (company-echo-show-soon 'company-fetch-metadata))
1830     ('hide (company-echo-hide))))
1831
1832 (provide 'company)
1833 ;;; company.el ends here