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Byron Clark committed fae6daf

Add ensime.

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 (require 'byronc-el-get)
 
+(require 'byronc-vendor)
+
 (setq semantic-default-submodes '(global-semantic-idel-scheduler-mode
                                   global-semanticdb-minor-mode
                                   global-semantic-idle-summary-mode

dotfiles/emacs.load/byronc-vendor.el

+(setq vendor-dir (concat dotfiles-dir "/vendor"))
+
+(setq ensime-root-dir (concat vendor-dir "/ensime_2.10.0-0.9.8.5"))
+(add-to-list 'load-path (concat ensime-root-dir "/elisp"))
+(require 'ensime)
+
+(provide 'byronc-vendor)

dotfiles/emacs.load/vendor/ensime_2.10.0-0.9.8.5/LICENSE

+ENSIME is Copyright 2010, Aemon Cannon
+All Rights Reserved
+
+The ENSIME Emacs client is licensed under the GNU Public License. See individual source files.
+
+The ENSIME Server is licensed under a BSD License unless noted otherwise in individual files. 

dotfiles/emacs.load/vendor/ensime_2.10.0-0.9.8.5/README.md

+# ENSIME
+the ENhanced Scala Interaction Mode for Emacs
+
+# Links
+- [ Download releases ](https://www.dropbox.com/sh/ryd981hq08swyqr/V9o9rDvxkS/ENSIME%20Releases)
+- [ Older releases ](https://github.com/aemoncannon/ensime/downloads)
+- [ Manual ](http://aemoncannon.github.com/ensime/index.html)
+- [ Manual as PDF ](http://aemoncannon.github.com/ensime/manual.pdf)
+- [ Discussion Group ](http://groups.google.com/group/ensime?hl=en)
+
+
+## Features
+
+- Highlight errors and warnings in your code buffers.
+- Inspect the type of any expression.
+- Browse packages
+- Completion for variables, methods, constructors, etc.
+- Incrementally search through classpath symbols
+- Find all references to a symbol
+- Jump to symbol definitions.
+- Semantic Highlighting
+- Automated Refactorings (rename, organize imports, extract method)
+- Source Formatting
+- AST-based selection
+- Supports 11,12
+- Embedded sbt shell
+- REPL
+- Debug support
+
+
+## Demo Videos (some are very out of date!)
+
+- [Overview (a bit out of date)](http://www.youtube.com/watch?v=A2Lai8IjLoY)
+- [Searching](http://www.youtube.com/watch?v=fcgnAJz98QE)
+- [Debugger Support](http://www.youtube.com/watch?v=v7-G6vD42z8)
+- [Import Suggestions](http://www.youtube.com/watch?v=Ynp8Df7-paw&hd=1)
+
+
+
+## System Requirements
+
+- Emacs 22 or later.
+- Linux, Mac OSX, Windows
+- Java Runtime
+- A Scala 2.8.x or 2.9.x project
+
+
+## Documentation
+
+- [The ENSIME User Manual](http://aemoncannon.github.com/ensime/index.html)
+
+
+## Getting Started
+
+__1) Install scala-mode2__
+
+Although it's not required, ENSIME is designed to compliment an existing scala major mode. scala-mode2 is an excellent scala mode, and can be found at https://github.com/hvesalai/scala-mode2
+
+__2) Install the ENSIME Server__
+
+Download the ENSIME distribution from the [releases page](https://www.dropbox.com/sh/ryd981hq08swyqr/V9o9rDvxkS/ENSIME%20Releases). Unpack the ENSIME distribution into a directory of your choosing. 
+
+Add the following lines to your .emacs file:
+
+    ;; load the ensime lisp code...
+    (add-to-list 'load-path "ENSIME_ROOT/elisp/")
+    (require 'ensime)
+
+    ;; This step causes the ensime-mode to be started whenever
+    ;; scala-mode is started for a buffer. You may have to customize this step
+    ;; if you're not using the standard scala mode.
+    (add-hook 'scala-mode-hook 'ensime-scala-mode-hook)
+
+
+__3) If you are using sbt, install the ENSIME Sbt Plugin (otherwise, see the [manual](http://aemoncannon.github.com/ensime/index.html#tth_sEc3.1.2))__
+
+Add the following lines to your project/plugins.sbt file:
+
+    addSbtPlugin("org.ensime" % "ensime-sbt-cmd" % "VERSION")
+
+Replace VERSION with the latest version of the plugin, available on [the plugin page](https://github.com/aemoncannon/ensime-sbt-cmd).  Then, from an sbt shell, generate your ENSIME project:
+    
+    ensime generate
+
+Note: Currently, it may be necessary to first delete your project/target directories before running 'ensime generate'.
+
+You should now have a .ensime file in the root of your project. There's no need to edit this file manually as you can now specify ENSIME settings directly from your sbt build file. Check the [manual](http://aemoncannon.github.com/ensime/index.html#tth_sEc3.1.1) for details.
+
+
+__5) Start ENSIME__
+
+From inside Emacs, execute M-x ensime
+
+
+## Developer Quick Start
+Note: This section is for people who want to hack on ENSIME itself.
+
+After cloning, and before you can run ENSIME, you must create the distribution directory structure. The sbt task 'stage' will create the directory 'dist' underneath the root clone directory. Then, follow the install instructions in section 2.2 above, substituting CLONE_DIR/dist as the root of your ENSIME distribution.
+
+
+The work-flow I use when hacking ENSIME:
+
+- Edit source files
+- 'sbt stage'
+- Stop existing ENSIME server by killing *inferior-ensime-server* buffer
+- Restart ENSIME with M-x ensime

dotfiles/emacs.load/vendor/ensime_2.10.0-0.9.8.5/bin/server

+#!/bin/bash
+set -f
+
+if [ `uname -s` = 'Darwin' ]; then
+    if [ -z $JAVA_HOME ]; then
+	JAVA_HOME=`/usr/libexec/java_home`
+    fi
+fi
+
+case "$1" in
+  -h|--help|"")
+    echo "$0 should be run by emacs plugin. M-x ensime should start the server for you"
+    exit 1
+  ;;
+  *)
+    PORT_FILE=$1
+  ;;
+esac
+
+if [ "$ENSIME_JVM_ARGS" == "" ]
+then
+  ENSIME_JVM_ARGS="-Xms256M -Xmx1512M -XX:PermSize=128m -Xss1M -Dfile.encoding=UTF-8"
+fi
+
+BOOTCLASSPATH="scala-library.jar:scala-reflect.jar:scala-compiler.jar:scala-actors.jar"
+CLASSPATH="lib/asm-3.3.jar:lib/asm-commons-3.3.jar:lib/asm-tree-3.3.jar:lib/asm-util-3.3.jar:lib/critbit-0.0.4.jar:lib/ensime_2.10-0.9.8.5.jar:lib/json-simple-1.1.jar:lib/lucene-core-3.5.0.jar:lib/org.eclipse.jdt.core-3.6.0.v_A58.jar:lib/org.scala-refactoring_2.10.0-SNAPSHOT-0.6.1-20130201.063851-55.jar:lib/scala-actors-2.10.0.jar:lib/scala-compiler.jar:lib/scala-library.jar:lib/scala-reflect-2.10.0.jar:lib/scalariform_2.10-0.1.4-SNAPSHOT.jar:${JAVA_HOME}/lib/tools.jar"
+CMD="java -Xbootclasspath/a:${BOOTCLASSPATH} -classpath ${CLASSPATH} ${ENSIME_JVM_ARGS} org.ensime.server.Server ${PORT_FILE}"
+echo $CMD
+exec $CMD
+

dotfiles/emacs.load/vendor/ensime_2.10.0-0.9.8.5/bin/server.bat

+set PORT_FILE=%1
+set BOOTCLASSPATH="%~dp0\..\scala-library.jar;%~dp0\..\scala-reflect.jar;%~dp0\..\scala-compiler.jar;%~dp0\..\scala-actors.jar"
+set CLASSPATH="%~dp0\..\lib\asm-3.3.jar;%~dp0\..\lib\asm-commons-3.3.jar;%~dp0\..\lib\asm-tree-3.3.jar;%~dp0\..\lib\asm-util-3.3.jar;%~dp0\..\lib\critbit-0.0.4.jar;%~dp0\..\lib\ensime_2.10-0.9.8.5.jar;%~dp0\..\lib\json-simple-1.1.jar;%~dp0\..\lib\lucene-core-3.5.0.jar;%~dp0\..\lib\org.eclipse.jdt.core-3.6.0.v_A58.jar;%~dp0\..\lib\org.scala-refactoring_2.10.0-SNAPSHOT-0.6.1-20130201.063851-55.jar;%~dp0\..\lib\scala-actors-2.10.0.jar;%~dp0\..\lib\scala-compiler.jar;%~dp0\..\lib\scala-library.jar;%~dp0\..\lib\scala-reflect-2.10.0.jar;%~dp0\..\lib\scalariform_2.10-0.1.4-SNAPSHOT.jar;%JAVA_HOME%\lib\tools.jar"
+if not defined ENSIME_JVM_ARGS (set ENSIME_JVM_ARGS=-Xms256M -Xmx1512M -XX:PermSize=128m -Xss1M -Dfile.encoding=UTF-8)
+java -Xbootclasspath/a:%BOOTCLASSPATH% -classpath %CLASSPATH% %ENSIME_JVM_ARGS% org.ensime.server.Server %PORT_FILE%

dotfiles/emacs.load/vendor/ensime_2.10.0-0.9.8.5/elisp/Makefile

+##===--- Makefile ---------------------------------------*- Makefile -*-===##
+#
+#
+#			The Ensime project
+#
+#
+##===-------------------------------------------------------------------===##
+
+EMACS = emacs
+
+ELS = $(shell ls -1 *.el)
+ELCS= $(ELS:.el=.elc)
+
+.el.elc:
+	$(EMACS) -batch -L . \
+		-eval "(setq max-lisp-eval-depth 1500 max-specpdl-size 3000)" \
+		-eval "(mapc (lambda (dir) (add-to-list 'load-path dir)) (parse-colon-path (getenv \"LOAD_PATH\")))" \
+		-f batch-byte-compile $*.el
+
+all: bytecompile
+
+bytecompile: $(ELCS)
+
+clean:
+	rm -rf $(ELCS)
+
+.PHONY: all clean

dotfiles/emacs.load/vendor/ensime_2.10.0-0.9.8.5/elisp/auto-complete.el

+;;; auto-complete.el --- Auto Completion for GNU Emacs
+
+;; Copyright (C) 2008, 2009, 2010  Tomohiro Matsuyama
+
+;; Author: Tomohiro Matsuyama <m2ym.pub@gmail.com>
+;; URL: http://cx4a.org/software/auto-complete
+;; Keywords: completion, convenience
+;; Version: 1.3
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;;
+;; This extension provides a way to complete with popup menu like:
+;;
+;;     def-!-
+;;     +-----------------+
+;;     |defun::::::::::::|
+;;     |defvar           |
+;;     |defmacro         |
+;;     |       ...       |
+;;     +-----------------+
+;;
+;; You can complete by typing and selecting menu.
+;;
+;; Entire documents are located in doc/ directory.
+;; Take a look for information.
+;;
+;; Enjoy!
+
+;;; Code:
+
+
+
+(eval-when-compile
+  (require 'cl))
+
+(require 'popup)
+
+;;;; Global stuff
+
+(defun ac-error (&optional var)
+  "Report an error and disable `auto-complete-mode'."
+  (ignore-errors
+    (message "auto-complete error: %s" var)
+    (auto-complete-mode -1)
+    var))
+
+
+
+;;;; Customization
+
+(defgroup ensime-auto-complete nil
+  "Auto completion."
+  :group 'ensime
+  :prefix "ac-")
+
+(defcustom ac-delay 0.1
+  "Delay to completions will be available."
+  :type 'float
+  :group 'ensime-auto-complete)
+
+(defcustom ac-auto-show-menu 0.8
+  "Non-nil means completion menu will be automatically shown."
+  :type '(choice (const :tag "Yes" t)
+                 (const :tag "Never" nil)
+                 (float :tag "Timer"))
+  :group 'ensime-auto-complete)
+
+(defcustom ac-show-menu-immediately-on-auto-complete t
+  "Non-nil means menu will be showed immediately on `auto-complete'."
+  :type 'boolean
+  :group 'ensime-auto-complete)
+
+(defcustom ac-expand-on-auto-complete t
+  "Non-nil means expand whole common part on first time `auto-complete'."
+  :type 'boolean
+  :group 'ensime-auto-complete)
+
+(defcustom ac-disable-faces '(font-lock-comment-face font-lock-string-face font-lock-doc-face)
+  "Non-nil means disable automatic completion on specified faces."
+  :type '(repeat symbol)
+  :group 'ensime-auto-complete)
+
+(defcustom ac-stop-flymake-on-completing t
+  "Non-nil means disble flymake temporarily on completing."
+  :type 'boolean
+  :group 'ensime-auto-complete)
+
+(defcustom ac-use-fuzzy t
+  "Non-nil means use fuzzy matching."
+  :type 'boolean
+  :group 'ensime-auto-complete)
+
+(defcustom ac-fuzzy-cursor-color "red"
+  "Cursor color in fuzzy mode."
+  :type 'string
+  :group 'ensime-auto-complete)
+
+(defcustom ac-use-comphist t
+  "Non-nil means use intelligent completion history."
+  :type 'boolean
+  :group 'ensime-auto-complete)
+
+(defcustom ac-comphist-threshold 0.7
+  "Percentage of ignoring low scored candidates."
+  :type 'float
+  :group 'ensime-auto-complete)
+
+(defcustom ac-comphist-file
+  (expand-file-name (concat (if (boundp 'user-emacs-directory)
+                                user-emacs-directory
+                              "~/.emacs.d/")
+                            "/ac-comphist.dat"))
+  "Completion history file name."
+  :type 'string
+  :group 'ensime-auto-complete)
+
+(defcustom ac-use-quick-help t
+  "Non-nil means use quick help."
+  :type 'boolean
+  :group 'ensime-auto-complete)
+
+(defcustom ac-quick-help-delay 1.5
+  "Delay to show quick help."
+  :type 'float
+  :group 'ensime-auto-complete)
+
+(defcustom ac-menu-height 10
+  "Max height of candidate menu."
+  :type 'integer
+  :group 'ensime-auto-complete)
+(defvaralias 'ac-candidate-menu-height 'ac-menu-height)
+
+(defcustom ac-quick-help-height 20
+  "Max height of quick help."
+  :type 'integer
+  :group 'ensime-auto-complete)
+
+(defcustom ac-quick-help-prefer-x t
+  "Prefer X tooltip than overlay popup for displaying quick help."
+  :type 'boolean
+  :group 'ensime-auto-complete)
+
+(defcustom ac-candidate-limit nil
+  "Limit number of candidates. Non-integer means no limit."
+  :type 'integer
+  :group 'ensime-auto-complete)
+(defvaralias 'ac-candidate-max 'ac-candidate-limit)
+
+(defcustom ac-modes
+  '(emacs-lisp-mode
+    lisp-interaction-mode
+    c-mode cc-mode c++-mode
+    java-mode malabar-mode clojure-mode scala-mode
+    scheme-mode
+    ocaml-mode tuareg-mode haskell-mode
+    perl-mode cperl-mode python-mode ruby-mode
+    ecmascript-mode javascript-mode js-mode js2-mode php-mode css-mode
+    makefile-mode sh-mode fortran-mode f90-mode ada-mode
+    xml-mode sgml-mode)
+  "Major modes `auto-complete-mode' can run on."
+  :type '(repeat symbol)
+  :group 'ensime-auto-complete)
+
+(defcustom ac-compatible-packages-regexp
+  "^ac-"
+  "Regexp to indicate what packages can work with auto-complete."
+  :type 'string
+  :group 'ensime-auto-complete)
+
+(defcustom ac-trigger-commands
+  '(self-insert-command)
+  "Trigger commands that specify whether `auto-complete' should start or not."
+  :type '(repeat symbol)
+  :group 'ensime-auto-complete)
+
+(defcustom ac-trigger-commands-on-completing
+  '(delete-backward-char
+    backward-delete-char
+    backward-delete-char-untabify)
+  "Trigger commands that specify whether `auto-complete' should continue or not."
+  :type '(repeat symbol)
+  :group 'ensime-auto-complete)
+
+(defcustom ac-trigger-key nil
+  "Non-nil means `auto-complete' will start by typing this key.
+If you specify this TAB, for example, `auto-complete' will start by typing TAB,
+and if there is no completions, an original command will be fallbacked."
+  :type 'string
+  :group 'ensime-auto-complete
+  :set (lambda (symbol value)
+         (set-default symbol value)
+         (when (and value
+                    (fboundp 'ac-set-trigger-key))
+           (ac-set-trigger-key value))))
+
+(defcustom ac-auto-start 2
+  "Non-nil means completion will be started automatically.
+Positive integer means if a length of a word you entered is larger than the value,
+completion will be started automatically.
+If you specify `nil', never be started automatically."
+  :type '(choice (const :tag "Yes" t)
+                 (const :tag "Never" nil)
+                 (integer :tag "Require"))
+  :group 'ensime-auto-complete)
+
+(defcustom ac-ignores nil
+  "List of string to ignore completion."
+  :type '(repeat string)
+  :group 'ensime-auto-complete)
+
+(defcustom ac-delete-dups t
+  "Non-nil means that duplicate candidates will be automatically
+removed."
+  :type '(repeat string)
+  :group 'ensime-auto-complete)
+
+(defcustom ac-ignore-case 'smart
+  "Non-nil means auto-complete ignores case.
+If this value is `smart', auto-complete ignores case only when
+a prefix doen't contain any upper case letters."
+  :type '(choice (const :tag "Yes" t)
+                 (const :tag "Smart" smart)
+                 (const :tag "No" nil))
+  :group 'ensime-auto-complete)
+
+(defcustom ac-dwim t
+  "Non-nil means `auto-complete' works based on Do What I Mean."
+  :type 'boolean
+  :group 'ensime-auto-complete)
+
+(defcustom ac-use-menu-map nil
+  "Non-nil means a special keymap `ac-menu-map' on completing menu will be used."
+  :type 'boolean
+  :group 'ensime-auto-complete)
+
+(defcustom ac-use-overriding-local-map nil
+  "Non-nil means `overriding-local-map' will be used to hack for overriding key events on auto-copletion."
+  :type 'boolean
+  :group 'ensime-auto-complete)
+
+(defface ac-completion-face
+  '((t (:foreground "darkgray" :underline t)))
+  "Face for inline completion"
+  :group 'ensime-auto-complete)
+
+(defface ac-candidate-face
+  '((t (:background "lightgray" :foreground "black")))
+  "Face for candidate."
+  :group 'ensime-auto-complete)
+
+(defface ac-selection-face
+  '((t (:background "steelblue" :foreground "white")))
+  "Face for selected candidate."
+  :group 'ensime-auto-complete)
+
+(defvar auto-complete-mode-hook nil
+  "Hook for `auto-complete-mode'.")
+
+
+
+;;;; Internal variables
+
+(defvar auto-complete-mode nil
+  "Dummy variable to suppress compiler warnings.")
+
+(defvar ac-cursor-color nil
+  "Old cursor color.")
+
+(defvar ac-inline nil
+  "Inline completion instance.")
+
+(defvar ac-menu nil
+  "Menu instance.")
+
+(defvar ac-show-menu nil
+  "Flag to show menu on timer tick.")
+
+(defvar ac-last-completion nil
+  "Cons of prefix marker and selected item of last completion.")
+
+(defvar ac-quick-help nil
+  "Quick help instance")
+
+(defvar ac-completing nil
+  "Non-nil means `auto-complete-mode' is now working on completion.")
+
+(defvar ac-buffer nil
+  "Buffer where auto-complete is started.")
+
+(defvar ac-point nil
+  "Start point of prefix.")
+
+(defvar ac-last-point nil
+  "Last point of updating pattern.")
+
+(defvar ac-prefix nil
+  "Prefix string.")
+(defvaralias 'ac-target 'ac-prefix)
+
+(defvar ac-selected-candidate nil
+  "Last selected candidate.")
+
+(defvar ac-common-part nil
+  "Common part string of meaningful candidates.
+If there is no common part, this will be nil.")
+
+(defvar ac-whole-common-part nil
+  "Common part string of whole candidates.
+If there is no common part, this will be nil.")
+
+(defvar ac-prefix-overlay nil
+  "Overlay for prefix string.")
+
+(defvar ac-timer nil
+  "Completion idle timer.")
+
+(defvar ac-show-menu-timer nil
+  "Show menu idle timer.")
+
+(defvar ac-quick-help-timer nil
+  "Quick help idle timer.")
+
+(defvar ac-triggered nil
+  "Flag to update.")
+
+(defvar ac-limit nil
+  "Limit number of candidates for each sources.")
+
+(defvar ac-candidates nil
+  "Current candidates.")
+
+(defvar ac-candidates-cache nil
+  "Candidates cache for individual sources.")
+
+(defvar ac-fuzzy-enable nil
+  "Non-nil means fuzzy matching is enabled.")
+
+(defvar ac-dwim-enable nil
+  "Non-nil means DWIM completion will be allowed.")
+
+(defvar ac-mode-map (make-sparse-keymap)
+  "Auto-complete mode map. It is also used for trigger key command. See also `ac-trigger-key'.")
+
+(defvar ac-completing-map
+  (let ((map (make-sparse-keymap)))
+    (define-key map "\t" 'ac-expand)
+    (define-key map "\r" 'ac-complete)
+    (define-key map (kbd "M-TAB") 'auto-complete)
+    (define-key map "\C-s" 'ac-isearch)
+
+    (define-key map "\M-n" 'ac-next)
+    (define-key map "\M-p" 'ac-previous)
+    (define-key map [down] 'ac-next)
+    (define-key map [up] 'ac-previous)
+
+    (define-key map [f1] 'ac-help)
+    (define-key map [M-f1] 'ac-persist-help)
+    (define-key map (kbd "C-?") 'ac-help)
+    (define-key map (kbd "C-M-?") 'ac-persist-help)
+
+    (define-key map [C-down] 'ac-quick-help-scroll-down)
+    (define-key map [C-up] 'ac-quick-help-scroll-up)
+    (define-key map "\C-\M-n" 'ac-quick-help-scroll-down)
+    (define-key map "\C-\M-p" 'ac-quick-help-scroll-up)
+
+    (dotimes (i 9)
+      (let ((symbol (intern (format "ac-complete-%d" (1+ i)))))
+        (fset symbol
+              `(lambda ()
+                 (interactive)
+                 (when (and (ac-menu-live-p) (popup-select ac-menu ,i))
+                   (ac-complete))))
+        (define-key map (read-kbd-macro (format "M-%s" (1+ i))) symbol)))
+
+    map)
+  "Keymap for completion.")
+(defvaralias 'ac-complete-mode-map 'ac-completing-map)
+
+(defvar ac-menu-map
+  (let ((map (make-sparse-keymap)))
+    (define-key map "\C-n" 'ac-next)
+    (define-key map "\C-p" 'ac-previous)
+    (set-keymap-parent map ac-completing-map)
+    map)
+  "Keymap for completion on completing menu.")
+
+(defvar ac-current-map
+  (let ((map (make-sparse-keymap)))
+    (set-keymap-parent map ac-completing-map)
+    map))
+
+(defvar ac-match-function 'all-completions
+  "Default match function.")
+
+(defvar ac-prefix-definitions
+  '((symbol . ac-prefix-symbol)
+    (file . ac-prefix-file)
+    (valid-file . ac-prefix-valid-file)
+    (c-dot . ac-prefix-c-dot)
+    (c-dot-ref . ac-prefix-c-dot-ref))
+  "Prefix definitions for common use.")
+
+(defvar ac-sources '(ac-source-words-in-same-mode-buffers)
+  "Sources for completion.")
+(make-variable-buffer-local 'ac-sources)
+
+(defvar ac-compiled-sources nil
+  "Compiled source of `ac-sources'.")
+
+(defvar ac-current-sources nil
+  "Current working sources. This is sublist of `ac-compiled-sources'.")
+
+(defvar ac-omni-completion-sources nil
+  "Do not use this anymore.")
+
+(defvar ac-current-prefix-def nil)
+
+(defvar ac-ignoring-prefix-def nil)
+
+
+
+;;;; Intelligent completion history
+
+(defvar ac-comphist nil
+  "Database of completion history.")
+
+(defsubst ac-comphist-make-tab ()
+  (make-hash-table :test 'equal))
+
+(defsubst ac-comphist-tab (db)
+  (nth 0 db))
+
+(defsubst ac-comphist-cache (db)
+  (nth 1 db))
+
+(defun ac-comphist-make (&optional tab)
+  (list (or tab (ac-comphist-make-tab)) (make-hash-table :test 'equal :weakness t)))
+
+(defun ac-comphist-get (db string &optional create)
+  (let* ((tab (ac-comphist-tab db))
+         (index (gethash string tab)))
+    (when (and create (null index))
+      (setq index (make-vector (length string) 0))
+      (puthash string index tab))
+    index))
+
+(defun ac-comphist-add (db string prefix)
+  (setq prefix (min prefix (1- (length string))))
+  (when (<= 0 prefix)
+    (setq string (substring-no-properties string))
+    (let ((stat (ac-comphist-get db string t)))
+      (incf (aref stat prefix))
+      (remhash string (ac-comphist-cache db)))))
+
+(defun ac-comphist-score (db string prefix)
+  (setq prefix (min prefix (1- (length string))))
+  (if (<= 0 prefix)
+      (let ((cache (gethash string (ac-comphist-cache db))))
+        (or (and cache (aref cache prefix))
+            (let ((stat (ac-comphist-get db string))
+                  (score 0.0))
+              (when stat
+                (loop for p from 0 below (length string)
+                      ;; sigmoid function
+                      with a = 5
+                      with b = (/ 700.0 a) ; bounds for avoiding range error in `exp'
+                      with d = (/ 6.0 a)
+                      for x = (max (- b) (min b (- d (abs (- prefix p)))))
+                      for r = (/ 1.0 (1+ (exp (* (- a) x))))
+                      do
+                      (incf score (* (aref stat p) r))))
+              ;; Weight by distance
+              (incf score (max 0.0 (- 0.3 (/ (- (length string) prefix) 100.0))))
+              (unless cache
+                (setq cache (make-vector (length string) nil))
+                (puthash string cache (ac-comphist-cache db)))
+              (aset cache prefix score)
+              score)))
+    0.0))
+
+(defun ac-comphist-sort (db collection prefix &optional threshold)
+  (let (result
+        (n 0)
+        (total 0)
+        (cur 0))
+    (setq result (mapcar (lambda (a)
+                           (when (and cur threshold)
+                             (if (>= cur (* total threshold))
+                                 (setq cur nil)
+                               (incf n)
+                               (incf cur (cdr a))))
+                           (car a))
+                         (sort (mapcar (lambda (string)
+                                         (let ((score (ac-comphist-score db string prefix)))
+                                           (incf total score)
+                                           (cons string score)))
+                                       collection)
+                               (lambda (a b) (< (cdr b) (cdr a))))))
+    (if threshold
+        (cons n result)
+      result)))
+
+(defun ac-comphist-serialize (db)
+  (let (alist)
+    (maphash (lambda (k v)
+               (push (cons k v) alist))
+             (ac-comphist-tab db))
+    (list alist)))
+
+(defun ac-comphist-deserialize (sexp)
+  (condition-case nil
+      (ac-comphist-make (let ((tab (ac-comphist-make-tab)))
+                          (mapc (lambda (cons)
+                                  (puthash (car cons) (cdr cons) tab))
+                                (nth 0 sexp))
+                          tab))
+    (error (message "Invalid comphist db.") nil)))
+
+(defun ac-comphist-init ()
+  (ac-comphist-load)
+  (add-hook 'kill-emacs-hook 'ac-comphist-save))
+
+(defun ac-comphist-load ()
+  (interactive)
+  (let ((db (if (file-exists-p ac-comphist-file)
+                (ignore-errors
+                  (with-temp-buffer
+                    (insert-file-contents ac-comphist-file)
+                    (goto-char (point-min))
+                    (ac-comphist-deserialize (read (current-buffer))))))))
+    (setq ac-comphist (or db (ac-comphist-make)))))
+
+(defun ac-comphist-save ()
+  (interactive)
+  (require 'pp)
+  (ignore-errors
+    (with-temp-buffer
+      (pp (ac-comphist-serialize ac-comphist) (current-buffer))
+      (write-region (point-min) (point-max) ac-comphist-file))))
+
+
+
+;;;; Auto completion internals
+
+(defun ac-menu-at-wrapper-line-p ()
+  "Return non-nil if current line is long and wrapped to next visual line."
+  (and (not truncate-lines)
+       (eq (line-beginning-position)
+           (save-excursion
+             (vertical-motion 1)
+             (line-beginning-position)))))
+
+(defun ac-prefix-symbol ()
+  "Default prefix definition function."
+  (require 'thingatpt)
+  (car-safe (bounds-of-thing-at-point 'symbol)))
+(defalias 'ac-prefix-default 'ac-prefix-symbol)
+
+(defun ac-prefix-file ()
+  "File prefix."
+  (let ((point (re-search-backward "[\"<>' \t\r\n]" nil t)))
+    (if point (1+ point))))
+
+(defun ac-prefix-valid-file ()
+  "Existed (or to be existed) file prefix."
+  (let* ((line-beg (line-beginning-position))
+         (end (point))
+         (start (or (let ((point (re-search-backward "[\"<>'= \t\r\n]" line-beg t)))
+                      (if point (1+ point)))
+                    line-beg))
+         (file (buffer-substring start end)))
+    (if (and file (or (string-match "^/" file)
+                      (and (setq file (and (string-match "^[^/]*/" file)
+                                           (match-string 0 file)))
+                           (file-directory-p file))))
+        start)))
+
+(defun ac-prefix-c-dot ()
+  "C-like languages dot(.) prefix."
+  (if (re-search-backward "\\.\\(\\(?:[a-zA-Z0-9][_a-zA-Z0-9]*\\)?\\)\\=" nil t)
+      (match-beginning 1)))
+
+(defun ac-prefix-c-dot-ref ()
+  "C-like languages dot(.) and reference(->) prefix."
+  (if (re-search-backward "\\(?:\\.\\|->\\)\\(\\(?:[a-zA-Z0-9][_a-zA-Z0-9]*\\)?\\)\\=" nil t)
+      (match-beginning 1)))
+
+(defun ac-define-prefix (name prefix)
+  "Define new prefix definition.
+You can not use it in source definition like (prefix . `NAME')."
+  (push (cons name prefix) ac-prefix-definitions))
+
+(defun ac-match-substring (prefix candidates)
+  (loop with regexp = (regexp-quote prefix)
+        for candidate in candidates
+        if (string-match regexp candidate)
+        collect candidate))
+
+(defsubst ac-source-entity (source)
+  (if (symbolp source)
+      (symbol-value source)
+    source))
+
+(defun ac-source-available-p (source)
+  (if (and (symbolp source)
+           (get source 'available))
+      (eq (get source 'available) t)
+    (let* ((src (ac-source-entity source))
+           (avail-pair (assq 'available src))
+           (avail-cond (cdr avail-pair))
+           (available (and (if avail-pair
+                               (cond
+                                ((symbolp avail-cond)
+                                 (funcall avail-cond))
+                                ((listp avail-cond)
+                                 (eval avail-cond)))
+                             t)
+                           (loop for feature in (assoc-default 'depends src)
+                                 unless (require feature nil t) return nil
+                                 finally return t))))
+      (if (symbolp source)
+          (put source 'available (if available t 'no)))
+      available)))
+
+(defun ac-compile-sources (sources)
+  "Compiled `SOURCES' into expanded sources style."
+  (loop for source in sources
+        if (ac-source-available-p source)
+        do
+        (setq source (ac-source-entity source))
+        (flet ((add-attribute (name value &optional append) (add-to-list 'source (cons name value) append)))
+          ;; prefix
+          (let* ((prefix (assoc 'prefix source))
+                 (real (assoc-default (cdr prefix) ac-prefix-definitions)))
+            (cond
+             (real
+              (add-attribute 'prefix real))
+             ((null prefix)
+              (add-attribute 'prefix 'ac-prefix-default))))
+          ;; match
+          (let ((match (assq 'match source)))
+            (cond
+             ((eq (cdr match) 'substring)
+              (setcdr match 'ac-match-substring)))))
+        and collect source))
+
+(defun ac-compiled-sources ()
+  (or ac-compiled-sources
+      (setq ac-compiled-sources
+            (ac-compile-sources ac-sources))))
+
+(defsubst ac-menu-live-p ()
+  (popup-live-p ac-menu))
+
+(defun ac-menu-create (point width height)
+  (setq ac-menu
+        (popup-create point width height
+                      :around t
+                      :face 'ac-candidate-face
+                      :selection-face 'ac-selection-face
+                      :symbol t
+                      :scroll-bar t
+                      :margin-left 1)))
+
+(defun ac-menu-delete ()
+  (when ac-menu
+    (popup-delete ac-menu)
+    (setq ac-menu)))
+
+(defsubst ac-inline-marker ()
+  (nth 0 ac-inline))
+
+(defsubst ac-inline-overlay ()
+  (nth 1 ac-inline))
+
+(defsubst ac-inline-live-p ()
+  (and ac-inline (ac-inline-overlay) t))
+
+(defun ac-inline-show (point string)
+  (unless ac-inline
+    (setq ac-inline (list (make-marker) nil)))
+  (save-excursion
+    (let ((overlay (ac-inline-overlay))
+          (width 0)
+          (string-width (string-width string))
+          (length 0)
+          (original-string string))
+      ;; Calculate string space to show completion
+      (goto-char point)
+      (let (c)
+        (while (and (not (eolp))
+                    (< width string-width)
+                    (setq c (char-after))
+                    (not (eq c ?\t)))   ; special case for tab
+	  (incf width (char-width c))
+	  (incf length)
+	  (forward-char)))
+
+      ;; Show completion
+      (goto-char point)
+      (cond
+       ((= width 0)
+        (set-marker (ac-inline-marker) point)
+        (let ((buffer-undo-list t))
+          (insert " "))
+        (setq width 1
+              length 1))
+       ((<= width string-width)
+        ;; No space to show
+        ;; Do nothing
+        )
+       ((> width string-width)
+        ;; Need to fill space
+        (setq string (concat string (make-string (- width string-width) ? )))))
+      (setq string (propertize string 'face 'ac-completion-face))
+      (if overlay
+          (progn
+            (move-overlay overlay point (+ point length))
+            (overlay-put overlay 'invisible nil))
+        (setq overlay (make-overlay point (+ point length)))
+        (setf (nth 1 ac-inline)  overlay)
+        (overlay-put overlay 'priority 9999)
+        ;; Help prefix-overlay in some cases
+        (overlay-put overlay 'keymap ac-current-map))
+      (overlay-put overlay 'display (substring string 0 1))
+      ;; TODO no width but char
+      (overlay-put overlay 'after-string (substring string 1))
+      (overlay-put overlay 'string original-string))))
+
+(defun ac-inline-delete ()
+  (when (ac-inline-live-p)
+    (ac-inline-hide)
+    (delete-overlay (ac-inline-overlay))
+    (setq ac-inline nil)))
+
+(defun ac-inline-hide ()
+  (when (ac-inline-live-p)
+    (let ((overlay (ac-inline-overlay))
+          (marker (ac-inline-marker))
+          (buffer-undo-list t))
+      (when overlay
+        (when (marker-position marker)
+          (save-excursion
+            (goto-char marker)
+            (delete-char 1)
+            (set-marker marker nil)))
+        (move-overlay overlay (point-min) (point-min))
+        (overlay-put overlay 'invisible t)
+        (overlay-put overlay 'display nil)
+        (overlay-put overlay 'after-string nil)))))
+
+(defun ac-inline-update ()
+  (if (and ac-completing ac-prefix (stringp ac-common-part))
+      (let ((common-part-length (length ac-common-part))
+            (prefix-length (length ac-prefix)))
+        (if (> common-part-length prefix-length)
+            (progn
+              (ac-inline-hide)
+              (ac-inline-show (point) (substring ac-common-part prefix-length)))
+          (ac-inline-delete)))
+    (ac-inline-delete)))
+
+(defun ac-put-prefix-overlay ()
+  (unless ac-prefix-overlay
+    (let (newline)
+      ;; Insert newline to make sure that cursor always on the overlay
+      (when (and (eq ac-point (point-max))
+                 (eq ac-point (point)))
+        (popup-save-buffer-state
+          (insert "\n"))
+        (setq newline t))
+      (setq ac-prefix-overlay (make-overlay ac-point (1+ (point)) nil t t))
+      (overlay-put ac-prefix-overlay 'priority 9999)
+      (overlay-put ac-prefix-overlay 'keymap (make-sparse-keymap))
+      (overlay-put ac-prefix-overlay 'newline newline))))
+
+(defun ac-remove-prefix-overlay ()
+  (when ac-prefix-overlay
+    (when (overlay-get ac-prefix-overlay 'newline)
+      ;; Remove inserted newline
+      (popup-save-buffer-state
+        (goto-char (point-max))
+        (if (eq (char-before) ?\n)
+            (delete-char -1))))
+    (delete-overlay ac-prefix-overlay)))
+
+(defun ac-activate-completing-map ()
+  (if (and ac-show-menu ac-use-menu-map)
+      (set-keymap-parent ac-current-map ac-menu-map))
+  (when (and ac-use-overriding-local-map
+             (null overriding-terminal-local-map))
+    (setq overriding-terminal-local-map ac-current-map))
+  (when ac-prefix-overlay
+    (set-keymap-parent (overlay-get ac-prefix-overlay 'keymap) ac-current-map)))
+
+(defun ac-deactivate-completing-map ()
+  (set-keymap-parent ac-current-map ac-completing-map)
+  (when (and ac-use-overriding-local-map
+             (eq overriding-terminal-local-map ac-current-map))
+    (setq overriding-terminal-local-map nil))
+  (when ac-prefix-overlay
+    (set-keymap-parent (overlay-get ac-prefix-overlay 'keymap) nil)))
+
+(defsubst ac-selected-candidate ()
+  (if ac-menu
+      (popup-selected-item ac-menu)))
+
+(defun ac-prefix (requires ignore-list)
+  (loop with current = (point)
+        with point
+        with prefix-def
+        with sources
+        for source in (ac-compiled-sources)
+        for prefix = (assoc-default 'prefix source)
+        for req = (or (assoc-default 'requires source) requires 1)
+
+        if (null prefix-def)
+        do
+        (unless (member prefix ignore-list)
+          (save-excursion
+            (setq point (cond
+                         ((symbolp prefix)
+                          (funcall prefix))
+                         ((stringp prefix)
+                          (and (re-search-backward (concat prefix "\\=") nil t)
+                               (or (match-beginning 1) (match-beginning 0))))
+                         ((stringp (car-safe prefix))
+                          (let ((regexp (nth 0 prefix))
+                                (end (nth 1 prefix))
+                                (group (nth 2 prefix)))
+                            (and (re-search-backward (concat regexp "\\=") nil t)
+                                 (funcall (if end 'match-end 'match-beginning)
+                                          (or group 0)))))
+                         (t
+                          (eval prefix))))
+            (if (and point
+                     (integerp req)
+                     (< (- current point) req))
+                (setq point nil))
+            (if point
+                (setq prefix-def prefix))))
+        
+        if (equal prefix prefix-def) do (push source sources)
+
+        finally return
+        (and point (list prefix-def point (nreverse sources)))))
+
+(defun ac-init ()
+  "Initialize current sources to start completion."
+  (setq ac-candidates-cache nil)
+  (loop for source in ac-current-sources
+        for function = (assoc-default 'init source)
+        if function do
+        (save-excursion
+          (cond
+           ((functionp function)
+            (funcall function))
+           (t
+            (eval function))))))
+
+(defun ac-candidates-1 (source)
+  (let* ((do-cache (assq 'cache source))
+         (function (assoc-default 'candidates source))
+         (action (assoc-default 'action source))
+         (document (assoc-default 'document source))
+         (symbol (assoc-default 'symbol source))
+         (ac-limit (or (assoc-default 'limit source) ac-limit))
+         (face (or (assoc-default 'face source) (assoc-default 'candidate-face source)))
+         (selection-face (assoc-default 'selection-face source))
+         (cache (and do-cache (assq source ac-candidates-cache)))
+         (candidates (cdr cache)))
+    (unless cache
+      (setq candidates (save-excursion
+                         (cond
+                          ((functionp function)
+                           (funcall function))
+                          (t
+                           (eval function)))))
+      ;; Convert (name value) format candidates into name with text properties.
+      (setq candidates (mapcar (lambda (candidate)
+                                 (if (consp candidate)
+                                     (propertize (car candidate) 'value (cdr candidate))
+                                   candidate))
+                               candidates))
+      (when do-cache
+        (push (cons source candidates) ac-candidates-cache)))
+    (setq candidates (funcall (or (assoc-default 'match source)
+                                  ac-match-function)
+                              ac-prefix candidates))
+    ;; Remove extra items regarding to ac-limit
+    (if (and (integerp ac-limit) (> ac-limit 1) (> (length candidates) ac-limit))
+        (setcdr (nthcdr (1- ac-limit) candidates) nil))
+    ;; Put candidate properties
+    (setq candidates (mapcar (lambda (candidate)
+                               (popup-item-propertize candidate
+                                                      'action action
+                                                      'symbol symbol
+                                                      'document document
+                                                      'popup-face face
+                                                      'selection-face selection-face))
+                             candidates))
+    candidates))
+
+(defun ac-candidates ()
+  "Produce candidates for current sources."
+  (loop with completion-ignore-case = (or (eq ac-ignore-case t)
+                                          (and (eq ac-ignore-case 'smart)
+                                               (let ((case-fold-search nil)) (not (string-match "[[:upper:]]" ac-prefix)))))
+        with case-fold-search = completion-ignore-case
+        with prefix-len = (length ac-prefix)
+        for source in ac-current-sources
+        append (ac-candidates-1 source) into candidates
+        finally return
+        (progn
+	  (when ac-delete-dups
+	    (delete-dups candidates))
+          (if (and ac-use-comphist ac-comphist)
+              (if ac-show-menu
+                  (let* ((pair (ac-comphist-sort ac-comphist candidates prefix-len ac-comphist-threshold))
+                         (n (car pair))
+                         (result (cdr pair))
+                         (cons (if (> n 0) (nthcdr (1- n) result)))
+                         (cdr (cdr cons)))
+                    (if cons (setcdr cons nil))
+                    (setq ac-common-part (try-completion ac-prefix result))
+                    (setq ac-whole-common-part (try-completion ac-prefix candidates))
+                    (if cons (setcdr cons cdr))
+                    result)
+                (setq candidates (ac-comphist-sort ac-comphist candidates prefix-len))
+                (setq ac-common-part (if candidates (popup-x-to-string (car candidates))))
+                (setq ac-whole-common-part (try-completion ac-prefix candidates))
+                candidates)
+            (setq ac-common-part (try-completion ac-prefix candidates))
+            (setq ac-whole-common-part ac-common-part)
+            candidates))))
+
+(defun ac-update-candidates (cursor scroll-top)
+  "Update candidates of menu to `ac-candidates' and redraw it."
+  (setf (popup-cursor ac-menu) cursor
+        (popup-scroll-top ac-menu) scroll-top)
+  (setq ac-dwim-enable (= (length ac-candidates) 1))
+  (if ac-candidates
+      (progn
+        (setq ac-completing t)
+        (ac-activate-completing-map))
+    (setq ac-completing nil)
+    (ac-deactivate-completing-map))
+  (ac-inline-update)
+  (popup-set-list ac-menu ac-candidates)
+  (if (and (not ac-fuzzy-enable)
+           (<= (length ac-candidates) 1))
+      (popup-hide ac-menu)
+    (if ac-show-menu
+        (popup-draw ac-menu))))
+
+(defun ac-reposition ()
+  "Force to redraw candidate menu with current `ac-candidates'."
+  (let ((cursor (popup-cursor ac-menu))
+        (scroll-top (popup-scroll-top ac-menu)))
+    (ac-menu-delete)
+    (ac-menu-create ac-point (popup-preferred-width ac-candidates) (popup-height ac-menu))
+    (ac-update-candidates cursor scroll-top)))
+
+(defun ac-cleanup ()
+  "Cleanup auto completion."
+  (if ac-cursor-color
+      (set-cursor-color ac-cursor-color))
+  (when (and ac-use-comphist ac-comphist)
+    (when (and (null ac-selected-candidate)
+               (member ac-prefix ac-candidates))
+      ;; Assume candidate is selected by just typing
+      (setq ac-selected-candidate ac-prefix)
+      (setq ac-last-point ac-point))
+    (when ac-selected-candidate
+      (ac-comphist-add ac-comphist
+                       ac-selected-candidate
+                       (if ac-last-point
+                           (- ac-last-point ac-point)
+                         (length ac-prefix)))))
+  (ac-deactivate-completing-map)
+  (ac-remove-prefix-overlay)
+  (ac-remove-quick-help)
+  (ac-inline-delete)
+  (ac-menu-delete)
+  (ac-cancel-timer)
+  (ac-cancel-show-menu-timer)
+  (ac-cancel-quick-help-timer)
+  (setq ac-cursor-color nil
+        ac-inline nil
+        ac-show-menu nil
+        ac-menu nil
+        ac-completing nil
+        ac-point nil
+        ac-last-point nil
+        ac-prefix nil
+        ac-prefix-overlay nil
+        ac-selected-candidate nil
+        ac-common-part nil
+        ac-whole-common-part nil
+        ac-triggered nil
+        ac-limit nil
+        ac-candidates nil
+        ac-candidates-cache nil
+        ac-fuzzy-enable nil
+        ac-dwim-enable nil
+        ac-compiled-sources nil
+        ac-current-sources nil
+        ac-current-prefix-def nil
+        ac-ignoring-prefix-def nil))
+
+(defsubst ac-abort ()
+  "Abort completion."
+  (ac-cleanup))
+
+(defun ac-expand-string (string &optional remove-undo-boundary)
+  "Expand `STRING' into the buffer and update `ac-prefix' to `STRING'.
+This function records deletion and insertion sequences by `undo-boundary'.
+If `remove-undo-boundary' is non-nil, this function also removes `undo-boundary'
+that have been made before in this function."
+  (when (not (equal string (buffer-substring ac-point (point))))
+    (undo-boundary)
+    ;; We can't use primitive-undo since it undoes by
+    ;; groups, divided by boundaries.
+    ;; We don't want boundary between deletion and insertion.
+    ;; So do it manually.
+    ;; Delete region silently for undo:
+    (if remove-undo-boundary
+        (progn
+          (let (buffer-undo-list)
+            (save-excursion
+              (delete-region ac-point (point))))
+          (setq buffer-undo-list
+                (nthcdr 2 buffer-undo-list)))
+      (delete-region ac-point (point)))
+    (insert string)
+    ;; Sometimes, possible when omni-completion used, (insert) added
+    ;; to buffer-undo-list strange record about position changes.
+    ;; Delete it here:
+    (when (and remove-undo-boundary
+               (integerp (cadr buffer-undo-list)))
+      (setcdr buffer-undo-list (nthcdr 2 buffer-undo-list)))
+    (undo-boundary)
+    (setq ac-selected-candidate string)
+    (setq ac-prefix string)))
+
+(defun ac-set-trigger-key (key)
+  "Set `ac-trigger-key' to `KEY'. It is recommemded to use this function instead of calling `setq'."
+  ;; Remove old mapping
+  (when ac-trigger-key
+    (define-key ac-mode-map (read-kbd-macro ac-trigger-key) nil))
+
+  ;; Make new mapping
+  (setq ac-trigger-key key)
+  (when key
+    (define-key ac-mode-map (read-kbd-macro key) 'ac-trigger-key-command)))
+
+(defun ac-set-timer ()
+  (unless ac-timer
+    (setq ac-timer (run-with-idle-timer ac-delay ac-delay 'ac-update-greedy))))
+
+(defun ac-cancel-timer ()
+  (when (timerp ac-timer)
+    (cancel-timer ac-timer)
+    (setq ac-timer nil)))
+
+(defun ac-update (&optional force)
+  (when (and auto-complete-mode
+             ac-prefix
+             (or ac-triggered
+                 force)
+             (not isearch-mode))
+    (ac-put-prefix-overlay)
+    (setq ac-candidates (ac-candidates))
+    (let ((preferred-width (popup-preferred-width ac-candidates)))
+      ;; Reposition if needed
+      (when (or (null ac-menu)
+                (>= (popup-width ac-menu) preferred-width)
+                (<= (popup-width ac-menu) (- preferred-width 10))
+                (and (> (popup-direction ac-menu) 0)
+                     (ac-menu-at-wrapper-line-p)))
+        (ac-inline-hide) ; Hide overlay to calculate correct column
+        (ac-menu-delete)
+        (ac-menu-create ac-point preferred-width ac-menu-height)))
+    (ac-update-candidates 0 0)
+    t))
+
+(defun ac-update-greedy (&optional force)
+  (let (result)
+    (while (when (and (setq result (ac-update force))
+                      (null ac-candidates))
+             (add-to-list 'ac-ignoring-prefix-def ac-current-prefix-def)
+             (ac-start :force-init t)
+             ac-current-prefix-def))
+    result))
+
+(defun ac-set-show-menu-timer ()
+  (when (and (or (integerp ac-auto-show-menu) (floatp ac-auto-show-menu))
+             (null ac-show-menu-timer))
+    (setq ac-show-menu-timer (run-with-idle-timer ac-auto-show-menu ac-auto-show-menu 'ac-show-menu))))
+
+(defun ac-cancel-show-menu-timer ()
+  (when (timerp ac-show-menu-timer)
+    (cancel-timer ac-show-menu-timer)
+    (setq ac-show-menu-timer nil)))
+
+(defun ac-show-menu ()
+  (when (not (eq ac-show-menu t))
+    (setq ac-show-menu t)
+    (ac-inline-hide)
+    (ac-remove-quick-help)
+    (ac-update t)))
+
+(defun ac-help (&optional persist)
+  (interactive "P")
+  (when ac-menu
+    (popup-menu-show-help ac-menu persist)))
+
+(defun ac-persist-help ()
+  (interactive)
+  (ac-help t))
+
+(defun ac-last-help (&optional persist)
+  (interactive "P")
+  (when ac-last-completion
+    (popup-item-show-help (cdr ac-last-completion) persist)))
+
+(defun ac-last-persist-help ()
+  (interactive)
+  (ac-last-help t))
+
+(defun ac-set-quick-help-timer ()
+  (when (and ac-use-quick-help
+             (null ac-quick-help-timer))
+    (setq ac-quick-help-timer (run-with-idle-timer ac-quick-help-delay ac-quick-help-delay 'ac-quick-help))))
+
+(defun ac-cancel-quick-help-timer ()
+  (when (timerp ac-quick-help-timer)
+    (cancel-timer ac-quick-help-timer)
+    (setq ac-quick-help-timer nil)))
+
+(defun ac-pos-tip-show-quick-help (menu &optional item &rest args)
+  (let* ((point (plist-get args :point))
+         (around nil)
+         (parent-offset (popup-offset menu))
+         (doc (popup-menu-documentation menu item)))
+    (when (stringp doc)
+      (if (popup-hidden-p menu)
+          (setq around t)
+        (setq point nil))
+      (with-no-warnings
+        (pos-tip-show doc
+                      'popup-tip-face
+                      (or point
+                          (and menu
+                               (popup-child-point menu parent-offset))
+                          (point))
+                      nil 0
+                      popup-tip-max-width
+                      nil nil
+                      (and (not around) 0))
+        (unless (plist-get args :nowait)
+          (clear-this-command-keys)
+          (unwind-protect
+              (push (read-event (plist-get args :prompt)) unread-command-events)
+            (pos-tip-hide))
+          t)))))
+
+(defun ac-quick-help (&optional force)
+  (interactive)
+  (when (and (or force (null this-command))
+             (ac-menu-live-p)
+             (null ac-quick-help))
+    (setq ac-quick-help
+	  (funcall (if (and ac-quick-help-prefer-x
+			    (eq window-system 'x)
+			    (featurep 'pos-tip))
+		       'ac-pos-tip-show-quick-help
+		     'popup-menu-show-quick-help)
+		   ac-menu nil
+		   :point ac-point
+		   :height ac-quick-help-height
+		   :nowait t))))
+
+(defun ac-remove-quick-help ()
+  (when ac-quick-help
+    (popup-delete ac-quick-help)
+    (setq ac-quick-help nil)))
+
+(defun ac-last-quick-help ()
+  (interactive)
+  (when (and ac-last-completion
+             (eq (marker-buffer (car ac-last-completion))
+                 (current-buffer)))
+    (let ((doc (popup-item-documentation (cdr ac-last-completion)))
+          (point (marker-position (car ac-last-completion))))
+      (when (stringp doc)
+        (if (and ac-quick-help-prefer-x
+                 (eq window-system 'x)
+                 (featurep 'pos-tip))
+            (with-no-warnings (pos-tip-show doc nil point nil 0))
+          (popup-tip doc
+                     :point point
+                     :around t
+                     :scroll-bar t
+                     :margin t))))))
+
+(defmacro ac-define-quick-help-command (name arglist &rest body)
+  (declare (indent 2))
+  `(progn
+     (defun ,name ,arglist ,@body)
+     (put ',name 'ac-quick-help-command t)))
+
+(ac-define-quick-help-command ac-quick-help-scroll-down ()
+  (interactive)
+  (when ac-quick-help
+    (popup-scroll-down ac-quick-help)))
+
+(ac-define-quick-help-command ac-quick-help-scroll-up ()
+  (interactive)
+  (when ac-quick-help
+    (popup-scroll-up ac-quick-help)))
+
+
+
+;;;; Auto completion isearch
+
+(defun ac-isearch-callback (list)
+  (setq ac-dwim-enable (eq (length list) 1)))
+
+(defun ac-isearch ()
+  (interactive)
+  (when (ac-menu-live-p)
+    (ac-cancel-show-menu-timer)
+    (ac-cancel-quick-help-timer)
+    (ac-show-menu)
+    (popup-isearch ac-menu :callback 'ac-isearch-callback)))
+
+
+
+;;;; Auto completion commands
+
+(defun auto-complete (&optional sources)
+  "Start auto-completion at current point."
+  (interactive)
+  (let ((menu-live (ac-menu-live-p))
+        (inline-live (ac-inline-live-p)))
+    (ac-abort)
+    (let ((ac-sources (or sources ac-sources)))
+      (if (or ac-show-menu-immediately-on-auto-complete
+              inline-live)
+          (setq ac-show-menu t))
+      (ac-start))
+    (when (ac-update-greedy t)
+      ;; TODO Not to cause inline completion to be disrupted.
+      (if (ac-inline-live-p)
+          (ac-inline-hide))
+      ;; Not to expand when it is first time to complete
+      (when (and (or (and (not ac-expand-on-auto-complete)
+                          (> (length ac-candidates) 1)
+                          (not menu-live))
+                     (not (let ((ac-common-part ac-whole-common-part))
+                            (ac-expand-common))))
+                 ac-use-fuzzy
+                 (null ac-candidates))
+        (ac-fuzzy-complete)))))
+
+(defun ac-fuzzy-complete ()
+  "Start fuzzy completion at current point."
+  (interactive)
+  (when (require 'fuzzy nil)
+    (unless (ac-menu-live-p)
+      (ac-start))
+    (let ((ac-match-function 'fuzzy-all-completions))
+      (unless ac-cursor-color
+        (setq ac-cursor-color (frame-parameter (selected-frame) 'cursor-color)))
+      (if ac-fuzzy-cursor-color
+          (set-cursor-color ac-fuzzy-cursor-color))
+      (setq ac-show-menu t)
+      (setq ac-fuzzy-enable t)
+      (setq ac-triggered nil)
+      (ac-update t)))
+  t)
+
+(defun ac-next ()
+  "Select next candidate."
+  (interactive)
+  (when (ac-menu-live-p)
+    (popup-next ac-menu)
+    (setq ac-show-menu t)
+    (if (eq this-command 'ac-next)
+        (setq ac-dwim-enable t))))
+
+(defun ac-previous ()
+  "Select previous candidate."
+  (interactive)
+  (when (ac-menu-live-p)
+    (popup-previous ac-menu)
+    (setq ac-show-menu t)
+    (if (eq this-command 'ac-previous)
+        (setq ac-dwim-enable t))))
+
+(defun ac-expand ()
+  "Try expand, and if expanded twice, select next candidate."
+  (interactive)
+  (unless (ac-expand-common)
+    (let ((string (ac-selected-candidate)))
+      (when string
+        (when (equal ac-prefix string)
+          (ac-next)
+          (setq string (ac-selected-candidate)))
+        (ac-expand-string string (eq last-command this-command))
+        ;; Do reposition if menu at long line
+        (if (and (> (popup-direction ac-menu) 0)
+                 (ac-menu-at-wrapper-line-p))
+            (ac-reposition))
+        (setq ac-show-menu t)
+        string))))
+
+(defun ac-expand-common ()
+  "Try to expand meaningful common part."
+  (interactive)
+  (if (and ac-dwim ac-dwim-enable)
+      (ac-complete)
+    (when (and (ac-inline-live-p)
+               ac-common-part)
+      (ac-inline-hide)
+      (ac-expand-string ac-common-part (eq last-command this-command))
+      (setq ac-common-part nil)
+      t)))
+
+(defun ac-complete ()
+  "Try complete."
+  (interactive)
+  (let* ((candidate (ac-selected-candidate))
+         (action (popup-item-property candidate 'action))
+         (fallback nil))
+    (when candidate
+      (unless (ac-expand-string candidate)
+        (setq fallback t))
+      ;; Remember to show help later
+      (when (and ac-point candidate)
+        (unless ac-last-completion
+          (setq ac-last-completion (cons (make-marker) nil)))
+        (set-marker (car ac-last-completion) ac-point ac-buffer)
+        (setcdr ac-last-completion candidate)))
+    (ac-abort)
+    (cond
+     (action
+      (funcall action))
+     (fallback
+      (ac-fallback-command)))
+    candidate))
+
+(defun* ac-start (&key
+                  requires
+                  force-init)
+  "Start completion."
+  (interactive)
+  (if (not auto-complete-mode)
+      (message "auto-complete-mode is not enabled")
+    (let* ((info (ac-prefix requires ac-ignoring-prefix-def))
+           (prefix-def (nth 0 info))
+           (point (nth 1 info))
+           (sources (nth 2 info))
+           prefix
+           (init (or force-init (not (eq ac-point point)))))
+      (if (or (null point)
+              (member (setq prefix (buffer-substring-no-properties point (point)))
+                      ac-ignores))
+          (prog1 nil
+            (ac-abort))
+        (unless ac-cursor-color
+          (setq ac-cursor-color (frame-parameter (selected-frame) 'cursor-color)))
+        (setq ac-show-menu (or ac-show-menu (if (eq ac-auto-show-menu t) t))
+              ac-current-sources sources
+              ac-buffer (current-buffer)
+              ac-point point
+              ac-prefix prefix
+              ac-limit ac-candidate-limit
+              ac-triggered t
+              ac-current-prefix-def prefix-def)
+        (when (or init (null ac-prefix-overlay))
+          (ac-init))
+        (ac-set-timer)
+        (ac-set-show-menu-timer)
+        (ac-set-quick-help-timer)
+        (ac-put-prefix-overlay)))))
+
+(defun ac-stop ()
+  "Stop completiong."
+  (interactive)
+  (setq ac-selected-candidate nil)
+  (ac-abort))
+
+(defun ac-trigger-key-command (&optional force)
+  (interactive "P")
+  (if (or force (ac-trigger-command-p last-command))
+      (auto-complete)
+    (ac-fallback-command 'ac-trigger-key-command)))
+
+
+
+;;;; Basic cache facility
+
+(defvar ac-clear-variables-every-minute-timer nil)
+(defvar ac-clear-variables-after-save nil)
+(defvar ac-clear-variables-every-minute nil)
+(defvar ac-minutes-counter 0)
+
+(defun ac-clear-variable-after-save (variable &optional pred)
+  (add-to-list 'ac-clear-variables-after-save (cons variable pred)))
+
+(defun ac-clear-variables-after-save ()
+  (dolist (pair ac-clear-variables-after-save)
+    (if (or (null (cdr pair))
+            (funcall (cdr pair)))
+        (set (car pair) nil))))
+
+(defun ac-clear-variable-every-minutes (variable minutes)
+  (add-to-list 'ac-clear-variables-every-minute (cons variable minutes)))
+
+(defun ac-clear-variable-every-minute (variable)
+  (ac-clear-variable-every-minutes variable 1))
+
+(defun ac-clear-variable-every-10-minutes (variable)
+  (ac-clear-variable-every-minutes variable 10))
+
+(defun ac-clear-variables-every-minute ()
+  (incf ac-minutes-counter)
+  (dolist (pair ac-clear-variables-every-minute)
+    (if (eq (% ac-minutes-counter (cdr pair)) 0)
+        (set (car pair) nil))))
+
+
+
+;;;; Auto complete mode
+
+(defun ac-cursor-on-diable-face-p (&optional point)
+  (memq (get-text-property (or point (point)) 'face) ac-disable-faces))
+
+(defun ac-trigger-command-p (command)
+  "Return non-nil if `COMMAND' is a trigger command."
+  (and (symbolp command)
+       (or (memq command ac-trigger-commands)
+           (string-match "self-insert-command" (symbol-name command))
+           (string-match "electric" (symbol-name command)))))
+
+(defun ac-fallback-command (&optional except-command)
+  (let* ((auto-complete-mode nil)
+         (keys (this-command-keys-vector))
+         (command (if keys (key-binding keys))))
+    (when (and (commandp command)
+               (not (eq command except-command)))
+      (setq this-command command)
+      (call-interactively command))))
+
+(defun ac-compatible-package-command-p (command)
+  "Return non-nil if `COMMAND' is compatible with auto-complete."
+  (and (symbolp command)
+       (string-match ac-compatible-packages-regexp (symbol-name command))))
+
+(defun ac-handle-pre-command ()
+  (condition-case var
+      (if (or (setq ac-triggered (and (not ac-fuzzy-enable) ; ignore key storkes in fuzzy mode
+                                      (or (eq this-command 'auto-complete) ; special case
+                                          (ac-trigger-command-p this-command)
+                                          (and ac-completing
+                                               (memq this-command ac-trigger-commands-on-completing)))
+                                      (not (ac-cursor-on-diable-face-p))))
+              (ac-compatible-package-command-p this-command))
+          (progn
+            (if (or (not (symbolp this-command))
+                    (not (get this-command 'ac-quick-help-command)))
+                (ac-remove-quick-help))
+            ;; Not to cause inline completion to be disrupted.
+            (ac-inline-hide))
+        (ac-abort))
+    (error (ac-error var))))
+
+(defun ac-handle-post-command ()
+  (condition-case var
+      (when (and ac-triggered
+                 (or ac-auto-start
+                     ac-completing)
+                 (not isearch-mode))
+        (setq ac-last-point (point))
+        (ac-start :requires (unless ac-completing ac-auto-start))
+        (ac-inline-update))
+    (error (ac-error var))))
+
+(defun ac-setup ()
+  (if ac-trigger-key
+      (ac-set-trigger-key ac-trigger-key))
+  (if ac-use-comphist
+      (ac-comphist-init))
+  (unless ac-clear-variables-every-minute-timer
+    (setq ac-clear-variables-every-minute-timer (run-with-timer 60 60 'ac-clear-variables-every-minute)))
+  (if ac-stop-flymake-on-completing
+      (defadvice flymake-on-timer-event (around ac-flymake-stop-advice activate)
+        (unless ac-completing
+          ad-do-it))
+    (ad-disable-advice 'flymake-on-timer-event 'around 'ac-flymake-stop-advice)))
+