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[elpa] master 092486e 66/66: Merge commit 'eb0d8d9e687e1364098f9abc6f928


From: Dmitry Gutov
Subject: [elpa] master 092486e 66/66: Merge commit 'eb0d8d9e687e1364098f9abc6f9281fcbc0d3abd' from company
Date: Tue, 13 Jan 2015 02:45:11 +0000

branch: master
commit 092486e564415dc4bab1fe600b548cf4fd18617b
Merge: 0ead54c eb0d8d9
Author: Dmitry Gutov <address@hidden>
Commit: Dmitry Gutov <address@hidden>

    Merge commit 'eb0d8d9e687e1364098f9abc6f9281fcbc0d3abd' from company
---
 packages/company/.elpaignore                       |    5 +
 packages/company/Makefile                          |    4 +-
 packages/company/NEWS.md                           |   19 +-
 packages/company/company-bbdb.el                   |   17 +-
 packages/company/company-capf.el                   |    9 +-
 packages/company/company-clang.el                  |   13 +-
 packages/company/company-cmake.el                  |  129 +++-
 packages/company/company-etags.el                  |    2 +-
 packages/company/company-files.el                  |    1 +
 packages/company/company-semantic.el               |   10 +
 packages/company/company-tests.el                  |  915 +-------------------
 packages/company/company.el                        |  378 +++++----
 packages/company/test/all.el                       |   28 +
 packages/company/test/async-tests.el               |  161 ++++
 packages/company/test/clang-tests.el               |   25 +
 packages/company/test/core-tests.el                |  481 ++++++++++
 .../elisp-tests.el}                                |    9 +-
 packages/company/test/frontends-tests.el           |  298 +++++++
 packages/company/test/keywords-tests.el            |   32 +
 packages/company/test/template-tests.el            |   91 ++
 packages/company/test/transformers-tests.el        |   58 ++
 21 files changed, 1569 insertions(+), 1116 deletions(-)

diff --git a/packages/company/.elpaignore b/packages/company/.elpaignore
new file mode 100644
index 0000000..9f31d8a
--- /dev/null
+++ b/packages/company/.elpaignore
@@ -0,0 +1,5 @@
+.travis.yml
+.gitignore
+Makefile
+test/
+company-tests.el
diff --git a/packages/company/Makefile b/packages/company/Makefile
index c52be4b..fada444 100644
--- a/packages/company/Makefile
+++ b/packages/company/Makefile
@@ -20,11 +20,11 @@ clean:
        @rm -rf company-*/ company-*.tar company-*.tar.bz2 *.elc ert.el
 
 test:
-       ${EMACS} -Q -nw -L . -l company-tests.el -l company-elisp-tests.el \
+       ${EMACS} -Q -nw -L . -l test/all.el \
        --eval "(let (pop-up-windows) (ert t))"
 
 test-batch:
-       ${EMACS} -Q --batch -L . -l company-tests.el -l company-elisp-tests.el \
+       ${EMACS} -Q --batch -L . -l test/all.el \
        --eval "(ert-run-tests-batch-and-exit '(not (tag interactive)))"
 
 compile:
diff --git a/packages/company/NEWS.md b/packages/company/NEWS.md
index 56bebb6..553155e 100644
--- a/packages/company/NEWS.md
+++ b/packages/company/NEWS.md
@@ -1,5 +1,22 @@
 # History of user-visible changes
 
+## Next
+
+* Pressing `M-n` or `M-p` doesn't quit the search mode.
+* New command `company-complete-common-or-cycle`. No default binding.
+* `company-search-toggle-filtering` replaced `company-search-kill-others`.
+* Quitting the search mode resets the filtering.
+* Pressing `backspace` in the search mode deletes the character at the end of
+  the search string.
+* `company-semantic` displays function arguments as annotations.
+* New user option, `company-bbdb-modes`.
+* `company-show-numbers` and `company-complete-number` now use visual numbering
+  of the candidates, taking into account only the ones currently displayed.
+* `company-complete-number` can be bound to keypad numbers directly, with or
+  without modifiers.
+* `company-cmake` expands `<LANG>` and `<CONFIG>` placeholders inside variable
+  names.
+
 ## 2014-10-15 (0.8.6)
 
 * `company-clang` and `company-template-c-like-templatify` support templated
@@ -14,7 +31,7 @@
 * `company-ropemacs` is only used when `ropemacs-mode` is on.
 * `company-gtags` is enabled in all `prog-mode` derivatives by default.
 * `company-end-of-buffer-workaround` is not used anymore.
-* `company-begin-commands` includes several `cc-mode` commands.
+* `company-begin-commands` includes some of `cc-mode` commands.
 
 ## 2014-08-27 (0.8.3)
 
diff --git a/packages/company/company-bbdb.el b/packages/company/company-bbdb.el
index 22741a2..58be84c 100644
--- a/packages/company/company-bbdb.el
+++ b/packages/company/company-bbdb.el
@@ -27,6 +27,15 @@
 (declare-function bbdb-dwim-mail "bbdb-com")
 (declare-function bbdb-search "bbdb-com")
 
+(defgroup company-bbdb nil
+  "Completion back-end for BBDB."
+  :group 'company)
+
+(defcustom company-bbdb-modes '(message-mode)
+  "Major modes in which `company-bbdb' may complete."
+  :type '(repeat (symbol :tag "Major mode"))
+  :package-version '(company . "0.8.8"))
+
 (defun company-bbdb--candidates (arg)
   (cl-mapcan (lambda (record)
                (mapcar (lambda (mail) (bbdb-dwim-mail record mail))
@@ -35,15 +44,15 @@
 
 ;;;###autoload
 (defun company-bbdb (command &optional arg &rest ignore)
-  "`company-mode' completion back-end for `bbdb'."
+  "`company-mode' completion back-end for BBDB."
   (interactive (list 'interactive))
   (cl-case command
     (interactive (company-begin-backend 'company-bbdb))
-    (prefix (and (eq major-mode 'message-mode)
+    (prefix (and (memq major-mode company-bbdb-modes)
                  (featurep 'bbdb-com)
-                 (looking-back "^\\(To\\|Cc\\|Bcc\\):.*"
+                 (looking-back "^\\(To\\|Cc\\|Bcc\\): *\\(.*\\)"
                                (line-beginning-position))
-                 (company-grab-symbol)))
+                 (match-string-no-properties 2)))
     (candidates (company-bbdb--candidates arg))
     (sorted t)
     (no-cache t)))
diff --git a/packages/company/company-capf.el b/packages/company/company-capf.el
index b630025..4962a26 100644
--- a/packages/company/company-capf.el
+++ b/packages/company/company-capf.el
@@ -138,9 +138,14 @@
     (`init nil)      ;Don't bother: plenty of other ways to initialize the 
code.
     (`post-completion
      (let* ((res (company--capf-data))
-            (exit-function (plist-get (nthcdr 4 res) :exit-function)))
+            (exit-function (plist-get (nthcdr 4 res) :exit-function))
+            (table (nth 3 res))
+            (pred (plist-get (nthcdr 4 res) :predicate)))
        (if exit-function
-           (funcall exit-function arg 'finished))))
+           ;; Follow the example of `completion--done'.
+           (funcall exit-function arg
+                    (if (eq (try-completion arg table pred) t)
+                        'finished 'sole)))))
     ))
 
 (provide 'company-capf)
diff --git a/packages/company/company-clang.el 
b/packages/company/company-clang.el
index 90757a8..8114b3b 100644
--- a/packages/company/company-clang.el
+++ b/packages/company/company-clang.el
@@ -110,7 +110,7 @@ or automatically through a custom 
`company-clang-prefix-guesser'."
 ;; TODO: Handle Pattern (syntactic hints would be neat).
 ;; Do we ever see OVERLOAD (or OVERRIDE)?
 (defconst company-clang--completion-pattern
-  "^COMPLETION: \\_<\\(%s[a-zA-Z0-9_:<>]*\\)\\(?: : \\(.*\\)$\\)?$")
+  "^COMPLETION: \\_<\\(%s[a-zA-Z0-9_:]*\\)\\(?: : \\(.*\\)$\\)?$")
 
 (defconst company-clang--error-buffer-name "*clang-error*")
 
@@ -150,7 +150,13 @@ or automatically through a custom 
`company-clang-prefix-guesser'."
      ((string-match "[^:]:[^:]" meta)
       (substring meta (1+ (match-beginning 0))))
      ((string-match "\\((.*)[ a-z]*\\'\\)" meta)
-      (match-string 1 meta)))))
+      (let ((paren (match-beginning 1)))
+        (if (not (eq (aref meta (1- paren)) ?>))
+            (match-string 1 meta)
+          (with-temp-buffer
+            (insert meta)
+            (goto-char paren)
+            (substring meta (1- (search-backward "<"))))))))))
 
 (defun company-clang--strip-formatting (text)
   (replace-regexp-in-string
@@ -182,7 +188,8 @@ or automatically through a custom 
`company-clang-prefix-guesser'."
 
 (defun company-clang--start-process (prefix callback &rest args)
   (let ((objc (derived-mode-p 'objc-mode))
-        (buf (get-buffer-create "*clang-output*")))
+        (buf (get-buffer-create "*clang-output*"))
+        (process-adaptive-read-buffering nil))
     (with-current-buffer buf (erase-buffer))
     (if (get-buffer-process buf)
         (funcall callback nil)
diff --git a/packages/company/company-cmake.el 
b/packages/company/company-cmake.el
index a466f60..e2962f5 100644
--- a/packages/company/company-cmake.el
+++ b/packages/company/company-cmake.el
@@ -1,9 +1,9 @@
 ;;; company-cmake.el --- company-mode completion back-end for CMake
 
-;; Copyright (C) 2013  Free Software Foundation, Inc.
+;; Copyright (C) 2013-2014  Free Software Foundation, Inc.
 
 ;; Author: Chen Bin <chenbin DOT sh AT gmail>
-;; Version: 0.1
+;; Version: 0.2
 
 ;; 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
@@ -45,48 +45,115 @@
 They affect which types of symbols we get completion candidates for.")
 
 (defvar company-cmake--completion-pattern
-  "^\\(%s[a-zA-Z0-9_]%s\\)$"
+  "^\\(%s[a-zA-Z0-9_<>]%s\\)$"
   "Regexp to match the candidates.")
 
 (defvar company-cmake-modes '(cmake-mode)
   "Major modes in which cmake may complete.")
 
+(defvar company-cmake--candidates-cache nil
+  "Cache for the raw candidates.")
+
 (defvar company-cmake--meta-command-cache nil
   "Cache for command arguments to retrieve descriptions for the candidates.")
 
-(defun company-cmake--parse-output (prefix cmd)
-  "Analyze the temp buffer and collect lines."
-  (goto-char (point-min))
-  (let ((pattern (format company-cmake--completion-pattern
+(defun company-cmake--replace-tags (rlt)
+  (setq rlt (replace-regexp-in-string
+             "\\(.*?\\(IS_GNU\\)?\\)<LANG>\\(.*\\)"
+             (lambda (_match)
+               (mapconcat 'identity
+                          (if (match-beginning 2)
+                              '("\\1CXX\\3" "\\1C\\3" "\\1G77\\3")
+                            '("\\1CXX\\3" "\\1C\\3" "\\1Fortran\\3"))
+                          "\n"))
+             rlt t))
+  (setq rlt (replace-regexp-in-string
+             "\\(.*\\)<CONFIG>\\(.*\\)"
+             (mapconcat 'identity '("\\1DEBUG\\2" "\\1RELEASE\\2"
+                                    "\\1RELWITHDEBINFO\\2" "\\1MINSIZEREL\\2")
+                        "\n")
+             rlt))
+  rlt)
+
+(defun company-cmake--fill-candidates-cache (arg)
+  "Fill candidates cache if needed."
+  (let (rlt)
+    (unless company-cmake--candidates-cache
+      (setq company-cmake--candidates-cache (make-hash-table :test 'equal)))
+
+    ;; If hash is empty, fill it.
+    (unless (gethash arg company-cmake--candidates-cache)
+      (with-temp-buffer
+        (let ((res (call-process company-cmake-executable nil t nil arg)))
+          (unless (zerop res)
+            (message "cmake executable exited with error=%d" res)))
+        (setq rlt (buffer-string)))
+      (setq rlt (company-cmake--replace-tags rlt))
+      (puthash arg rlt company-cmake--candidates-cache))
+    ))
+
+(defun company-cmake--parse (prefix content cmd)
+  (let ((start 0)
+        (pattern (format company-cmake--completion-pattern
                          (regexp-quote prefix)
                          (if (zerop (length prefix)) "+" "*")))
-        (case-fold-search nil)
-        lines match)
-    (while (re-search-forward pattern nil t)
-      (setq match (match-string-no-properties 1))
-      (puthash match cmd company-cmake--meta-command-cache)
-      (push match lines))
-    lines))
+        (lines (split-string content "\n"))
+        match
+        rlt)
+    (dolist (line lines)
+      (when (string-match pattern line)
+        (let ((match (match-string 1 line)))
+          (when match
+            (puthash match cmd company-cmake--meta-command-cache)
+            (push match rlt)))))
+    rlt))
 
 (defun company-cmake--candidates (prefix)
-  (let ((res 0)
-        results
-        cmd)
-    (setq company-cmake--meta-command-cache (make-hash-table :test 'equal))
+  (let (results
+        cmd-opts
+        str)
+
+    (unless company-cmake--meta-command-cache
+      (setq company-cmake--meta-command-cache (make-hash-table :test 'equal)))
+
     (dolist (arg company-cmake-executable-arguments)
-      (with-temp-buffer
-        (setq res (call-process company-cmake-executable nil t nil arg))
-        (unless (eq 0 res)
-          (message "cmake executable exited with error=%d" res))
-        (setq cmd (replace-regexp-in-string "-list$" "" arg) )
-        (setq results (nconc results (company-cmake--parse-output prefix 
cmd)))))
+      (company-cmake--fill-candidates-cache arg)
+      (setq cmd-opts (replace-regexp-in-string "-list$" "" arg) )
+
+      (setq str (gethash arg company-cmake--candidates-cache))
+      (when str
+        (setq results (nconc results
+                             (company-cmake--parse prefix str cmd-opts)))))
     results))
 
-(defun company-cmake--meta (prefix)
-  (let ((cmd-opts (gethash prefix company-cmake--meta-command-cache))
+(defun company-cmake--unexpand-candidate (candidate)
+  (cond
+   ((string-match "^CMAKE_\\(C\\|CXX\\|Fortran\\)\\(_.*\\)$" candidate)
+    (setq candidate (concat "CMAKE_<LANG>" (match-string 2 candidate))))
+
+   ;; C flags
+   ((string-match "^\\(.*_\\)IS_GNU\\(C\\|CXX\\|G77\\)$" candidate)
+    (setq candidate (concat (match-string 1 candidate) "IS_GNU<LANG>")))
+
+   ;; C flags
+   ((string-match "^\\(.*_\\)OVERRIDE_\\(C\\|CXX\\|Fortran\\)$" candidate)
+    (setq candidate (concat (match-string 1 candidate) "OVERRIDE_<LANG>")))
+
+   ((string-match 
"^\\(.*\\)\\(_DEBUG\\|_RELEASE\\|_RELWITHDEBINFO\\|_MINSIZEREL\\)\\(.*\\)$" 
candidate)
+    (setq candidate (concat (match-string 1 candidate)
+                            "_<CONFIG>"
+                            (match-string 3 candidate)))))
+  candidate)
+
+(defun company-cmake--meta (candidate)
+  (let ((cmd-opts (gethash candidate company-cmake--meta-command-cache))
         result)
+    (setq candidate (company-cmake--unexpand-candidate candidate))
+
+    ;; Don't cache the documentation of every candidate (command)
+    ;; Cache in this case will cost too much memory.
     (with-temp-buffer
-      (call-process company-cmake-executable nil t nil cmd-opts prefix)
+      (call-process company-cmake-executable nil t nil cmd-opts candidate)
       ;; Go to the third line, trim it and return the result.
       ;; Tested with cmake 2.8.9.
       (goto-char (point-min))
@@ -96,10 +163,12 @@ They affect which types of symbols we get completion 
candidates for.")
       (setq result (replace-regexp-in-string "^[ \t\n\r]+" "" result))
       result)))
 
-(defun company-cmake--doc-buffer (prefix)
-  (let ((cmd-opts (gethash prefix company-cmake--meta-command-cache)))
+(defun company-cmake--doc-buffer (candidate)
+  (let ((cmd-opts (gethash candidate company-cmake--meta-command-cache)))
+
+    (setq candidate (company-cmake--unexpand-candidate candidate))
     (with-temp-buffer
-      (call-process company-cmake-executable nil t nil cmd-opts prefix)
+      (call-process company-cmake-executable nil t nil cmd-opts candidate)
       ;; Go to the third line, trim it and return the doc buffer.
       ;; Tested with cmake 2.8.9.
       (goto-char (point-min))
diff --git a/packages/company/company-etags.el 
b/packages/company/company-etags.el
index c7ba608..1c01c91 100644
--- a/packages/company/company-etags.el
+++ b/packages/company/company-etags.el
@@ -54,7 +54,7 @@ buffer automatically."
   (let ((file (locate-dominating-file (or buffer-file-name
                                           default-directory)
                                       "TAGS")))
-    (when file
+    (when (and file (file-regular-p file))
       (list (expand-file-name file)))))
 
 (defun company-etags-buffer-table ()
diff --git a/packages/company/company-files.el 
b/packages/company/company-files.el
index baaeaca..7cfc500 100644
--- a/packages/company/company-files.el
+++ b/packages/company/company-files.el
@@ -64,6 +64,7 @@
                     (expand-file-name dir)
                     (nth 5 (file-attributes dir))))
          (file (file-name-nondirectory prefix))
+         (completion-ignore-case read-file-name-completion-ignore-case)
          candidates directories)
     (unless (company-file--keys-match-p key (car 
company-files--completion-cache))
       (dolist (file (company-files--directory-files dir file))
diff --git a/packages/company/company-semantic.el 
b/packages/company/company-semantic.el
index 6c020a3..a1c7d16 100644
--- a/packages/company/company-semantic.el
+++ b/packages/company/company-semantic.el
@@ -99,6 +99,14 @@
       (push tag company-semantic--current-tags)))
   (delete "" (mapcar 'semantic-tag-name company-semantic--current-tags)))
 
+(defun company-semantic-annotation (argument tags)
+  (let* ((tag (assoc argument tags))
+         (kind (when tag (elt tag 1))))
+    (cl-case kind
+      (function (let* ((prototype (semantic-format-tag-prototype tag nil nil))
+                       (par-pos (string-match "(" prototype)))
+                  (when par-pos (substring prototype par-pos)))))))
+
 (defun company-semantic--pre-prefix-length (prefix-length)
   "Sum up the length of all chained symbols before POS.
 Symbols are chained by \".\" or \"->\"."
@@ -133,6 +141,8 @@ Symbols are chained by \".\" or \"->\"."
                   (company-semantic-completions arg)))
     (meta (funcall company-semantic-metadata-function
                    (assoc arg company-semantic--current-tags)))
+    (annotation (company-semantic-annotation arg
+                                             company-semantic--current-tags))
     (doc-buffer (company-semantic-doc-buffer
                  (assoc arg company-semantic--current-tags)))
     ;; Because "" is an empty context and doesn't return local variables.
diff --git a/packages/company/company-tests.el 
b/packages/company/company-tests.el
index 0663c71..f0d669d 100644
--- a/packages/company/company-tests.el
+++ b/packages/company/company-tests.el
@@ -1,8 +1,8 @@
-;;; company-tests.el --- company-mode tests  -*- lexical-binding: t -*-
+;;; company-tests.el --- company-mode test helpers  -*- lexical-binding: t -*-
 
 ;; Copyright (C) 2011, 2013-2014  Free Software Foundation, Inc.
 
-;; Author: Nikolaj Schumacher
+;; Author: Dmitry Gutov
 
 ;; This file is part of GNU Emacs.
 
@@ -19,880 +19,11 @@
 ;; You should have received a copy of the GNU General Public License
 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
 
-
-;;; Commentary:
-;;
-
-;;; Code:
-
-(require 'ert)
 (require 'company)
-(require 'company-keywords)
-(require 'company-clang)
 
 (defun company--column (&optional pos)
   (car (company--col-row pos)))
 
-;;; Core
-
-(ert-deftest company-sorted-keywords ()
-  "Test that keywords in `company-keywords-alist' are in alphabetical order."
-  (dolist (pair company-keywords-alist)
-    (when (consp (cdr pair))
-      (let ((prev (cadr pair)))
-        (dolist (next (cddr pair))
-          (should (not (equal prev next)))
-          (should (string< prev next))
-          (setq prev next))))))
-
-(ert-deftest company-good-prefix ()
-  (let ((company-minimum-prefix-length 5)
-        company-abort-manual-when-too-short
-        company--manual-action            ;idle begin
-        (company-selection-changed t))    ;has no effect
-    (should (eq t (company--good-prefix-p "address@hidden")))
-    (should (eq nil (company--good-prefix-p "abcd")))
-    (should (eq nil (company--good-prefix-p 'stop)))
-    (should (eq t (company--good-prefix-p '("foo" . 5))))
-    (should (eq nil (company--good-prefix-p '("foo" . 4))))
-    (should (eq t (company--good-prefix-p '("foo" . t))))))
-
-(ert-deftest company--manual-prefix-set-and-unset ()
-  (with-temp-buffer
-    (insert "ab")
-    (company-mode)
-    (let (company-frontends
-          (company-backends
-           (list (lambda (command &optional arg)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abc" "abd")))))))
-      (company-manual-begin)
-      (should (equal "ab" company--manual-prefix))
-      (company-abort)
-      (should (null company--manual-prefix)))))
-
-(ert-deftest company-abort-manual-when-too-short ()
-  (let ((company-minimum-prefix-length 5)
-        (company-abort-manual-when-too-short t)
-        (company-selection-changed t))    ;has not effect
-    (let ((company--manual-action nil))   ;idle begin
-      (should (eq t (company--good-prefix-p "address@hidden")))
-      (should (eq t (company--good-prefix-p '("foo" . 5))))
-      (should (eq t (company--good-prefix-p '("foo" . t)))))
-    (let ((company--manual-action t)
-          (company--manual-prefix "abc")) ;manual begin from this prefix
-      (should (eq t (company--good-prefix-p "address@hidden")))
-      (should (eq nil (company--good-prefix-p "ab")))
-      (should (eq nil (company--good-prefix-p 'stop)))
-      (should (eq t (company--good-prefix-p '("foo" . 4))))
-      (should (eq t (company--good-prefix-p "abcd")))
-      (should (eq t (company--good-prefix-p "abc")))
-      (should (eq t (company--good-prefix-p '("bar" . t)))))))
-
-(ert-deftest company-multi-backend-with-lambdas ()
-  (let ((company-backend
-         (list (lambda (command &optional arg &rest ignore)
-                 (cl-case command
-                   (prefix "z")
-                   (candidates '("a" "b"))))
-               (lambda (command &optional arg &rest ignore)
-                 (cl-case command
-                   (prefix "z")
-                   (candidates '("c" "d")))))))
-    (should (equal (company-call-backend 'candidates "z") '("a" "b" "c" 
"d")))))
-
-(ert-deftest company-multi-backend-filters-backends-by-prefix ()
-  (let ((company-backend
-         (list (lambda (command &optional arg &rest ignore)
-                 (cl-case command
-                   (prefix (cons "z" t))
-                   (candidates '("a" "b"))))
-               (lambda (command &optional arg &rest ignore)
-                 (cl-case command
-                   (prefix "t")
-                   (candidates '("c" "d"))))
-               (lambda (command &optional arg &rest ignore)
-                 (cl-case command
-                   (prefix "z")
-                   (candidates '("e" "f")))))))
-    (should (equal (company-call-backend 'candidates "z") '("a" "b" "e" 
"f")))))
-
-(ert-deftest company-multi-backend-remembers-candidate-backend ()
-  (let ((company-backend
-         (list (lambda (command &optional arg)
-                 (cl-case command
-                   (ignore-case nil)
-                   (annotation "1")
-                   (candidates '("a" "c"))
-                   (post-completion "13")))
-               (lambda (command &optional arg)
-                 (cl-case command
-                   (ignore-case t)
-                   (annotation "2")
-                   (candidates '("b" "d"))
-                   (post-completion "42")))
-               (lambda (command &optional arg)
-                 (cl-case command
-                   (annotation "3")
-                   (candidates '("e"))
-                   (post-completion "74"))))))
-    (let ((candidates (company-calculate-candidates nil)))
-      (should (equal candidates '("a" "b" "c" "d" "e")))
-      (should (equal t (company-call-backend 'ignore-case)))
-      (should (equal "1" (company-call-backend 'annotation (nth 0 
candidates))))
-      (should (equal "2" (company-call-backend 'annotation (nth 1 
candidates))))
-      (should (equal "13" (company-call-backend 'post-completion (nth 2 
candidates))))
-      (should (equal "42" (company-call-backend 'post-completion (nth 3 
candidates))))
-      (should (equal "3" (company-call-backend 'annotation (nth 4 
candidates))))
-      (should (equal "74" (company-call-backend 'post-completion (nth 4 
candidates)))))))
-
-(ert-deftest company-multi-backend-handles-keyword-with ()
-  (let ((primo (lambda (command &optional arg)
-                 (cl-case command
-                   (prefix "a")
-                   (candidates '("abb" "abc" "abd")))))
-        (secundo (lambda (command &optional arg)
-                   (cl-case command
-                     (prefix "a")
-                     (candidates '("acc" "acd"))))))
-    (let ((company-backend (list 'ignore 'ignore :with secundo)))
-      (should (null (company-call-backend 'prefix))))
-    (let ((company-backend (list 'ignore primo :with secundo)))
-      (should (equal "a" (company-call-backend 'prefix)))
-      (should (equal '("abb" "abc" "abd" "acc" "acd")
-                     (company-call-backend 'candidates "a"))))))
-
-(ert-deftest company-begin-backend-failure-doesnt-break-company-backends ()
-  (with-temp-buffer
-    (insert "a")
-    (company-mode)
-    (should-error
-     (company-begin-backend (lambda (command &rest ignore))))
-    (let (company-frontends
-          (company-backends
-           (list (lambda (command &optional arg)
-                   (cl-case command
-                     (prefix "a")
-                     (candidates '("a" "ab" "ac")))))))
-      (let (this-command)
-        (company-call 'complete))
-      (should (eq 3 company-candidates-length)))))
-
-(ert-deftest company-require-match-explicit ()
-  (with-temp-buffer
-    (insert "ab")
-    (company-mode)
-    (let (company-frontends
-          (company-require-match 'company-explicit-action-p)
-          (company-backends
-           (list (lambda (command &optional arg)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abc" "abd")))))))
-      (let (this-command)
-        (company-complete))
-      (let ((last-command-event ?e))
-        (company-call 'self-insert-command 1))
-      (should (eq 2 company-candidates-length))
-      (should (eq 3 (point))))))
-
-(ert-deftest company-dont-require-match-when-idle ()
-  (with-temp-buffer
-    (insert "ab")
-    (company-mode)
-    (let (company-frontends
-          (company-minimum-prefix-length 2)
-          (company-require-match 'company-explicit-action-p)
-          (company-backends
-           (list (lambda (command &optional arg)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abc" "abd")))))))
-      (company-idle-begin (current-buffer) (selected-window)
-                          (buffer-chars-modified-tick) (point))
-      (should (eq 2 company-candidates-length))
-      (let ((last-command-event ?e))
-        (company-call 'self-insert-command 1))
-      (should (eq nil company-candidates-length))
-      (should (eq 4 (point))))))
-
-(ert-deftest company-dont-require-match-if-old-prefix-ended-and-was-a-match ()
-  (with-temp-buffer
-    (insert "ab")
-    (company-mode)
-    (let (company-frontends
-          (company-require-match 'company-explicit-action-p)
-          (company-backends
-           (list (lambda (command &optional arg)
-                   (cl-case command
-                     (prefix (company-grab-word))
-                     (candidates '("abc" "ab" "abd"))
-                     (sorted t))))))
-      (let (this-command)
-        (company-complete))
-      (let ((last-command-event ?e))
-        (company-call 'self-insert-command 1))
-      (should (eq 3 company-candidates-length))
-      (should (eq 3 (point)))
-      (let ((last-command-event ? ))
-        (company-call 'self-insert-command 1))
-      (should (null company-candidates-length))
-      (should (eq 4 (point))))))
-
-(ert-deftest company-should-complete-whitelist ()
-  (with-temp-buffer
-    (insert "ab")
-    (company-mode)
-    (let (company-frontends
-          company-begin-commands
-          (company-backends
-           (list (lambda (command &optional arg)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abc" "abd")))))))
-      (let ((company-continue-commands nil))
-        (let (this-command)
-          (company-complete))
-        (company-call 'backward-delete-char 1)
-        (should (null company-candidates-length)))
-      (let ((company-continue-commands '(backward-delete-char)))
-        (let (this-command)
-          (company-complete))
-        (company-call 'backward-delete-char 1)
-        (should (eq 2 company-candidates-length))))))
-
-(ert-deftest company-should-complete-blacklist ()
-  (with-temp-buffer
-    (insert "ab")
-    (company-mode)
-    (let (company-frontends
-          company-begin-commands
-          (company-backends
-           (list (lambda (command &optional arg)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abc" "abd")))))))
-      (let ((company-continue-commands '(not backward-delete-char)))
-        (let (this-command)
-          (company-complete))
-        (company-call 'backward-delete-char 1)
-        (should (null company-candidates-length)))
-      (let ((company-continue-commands '(not backward-delete-char-untabify)))
-        (let (this-command)
-          (company-complete))
-        (company-call 'backward-delete-char 1)
-        (should (eq 2 company-candidates-length))))))
-
-(ert-deftest company-auto-complete-explicit ()
-  (with-temp-buffer
-    (insert "ab")
-    (company-mode)
-    (let (company-frontends
-          (company-auto-complete 'company-explicit-action-p)
-          (company-auto-complete-chars '(? ))
-          (company-backends
-           (list (lambda (command &optional arg)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abcd" "abef")))))))
-      (let (this-command)
-        (company-complete))
-      (let ((last-command-event ? ))
-        (company-call 'self-insert-command 1))
-      (should (string= "abcd " (buffer-string))))))
-
-(ert-deftest company-no-auto-complete-when-idle ()
-  (with-temp-buffer
-    (insert "ab")
-    (company-mode)
-    (let (company-frontends
-          (company-auto-complete 'company-explicit-action-p)
-          (company-auto-complete-chars '(? ))
-          (company-minimum-prefix-length 2)
-          (company-backends
-           (list (lambda (command &optional arg)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abcd" "abef")))))))
-      (company-idle-begin (current-buffer) (selected-window)
-                          (buffer-chars-modified-tick) (point))
-      (let ((last-command-event ? ))
-        (company-call 'self-insert-command 1))
-      (should (string= "ab " (buffer-string))))))
-
-(ert-deftest company-clears-explicit-action-when-no-matches ()
-  (with-temp-buffer
-    (company-mode)
-    (let (company-frontends
-          company-backends)
-      (company-call 'manual-begin) ;; fails
-      (should (null company-candidates))
-      (should (null (company-explicit-action-p))))))
-
-(ert-deftest company-ignore-case-replaces-prefix ()
-  (with-temp-buffer
-    (company-mode)
-    (let (company-frontends
-          company-end-of-buffer-workaround
-          (company-backends
-           (list (lambda (command &optional arg)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abcd" "abef"))
-                     (ignore-case t))))))
-      (insert "A")
-      (let (this-command)
-        (company-complete))
-      (should (string= "ab" (buffer-string)))
-      (delete-char -2)
-      (insert "A") ; hack, to keep it in one test
-      (company-complete-selection)
-      (should (string= "abcd" (buffer-string))))))
-
-(ert-deftest company-ignore-case-with-keep-prefix ()
-  (with-temp-buffer
-    (insert "AB")
-    (company-mode)
-    (let (company-frontends
-          (company-backends
-           (list (lambda (command &optional arg)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("abcd" "abef"))
-                     (ignore-case 'keep-prefix))))))
-      (let (this-command)
-        (company-complete))
-      (company-complete-selection)
-      (should (string= "ABcd" (buffer-string))))))
-
-(ert-deftest company-non-prefix-completion ()
-  (with-temp-buffer
-    (insert "tc")
-    (company-mode)
-    (let (company-frontends
-          company-end-of-buffer-workaround
-          (company-backends
-           (list (lambda (command &optional arg)
-                   (cl-case command
-                     (prefix (buffer-substring (point-min) (point)))
-                     (candidates '("tea-cup" "teal-color")))))))
-      (let (this-command)
-        (company-complete))
-      (should (string= "tc" (buffer-string)))
-      (company-complete-selection)
-      (should (string= "tea-cup" (buffer-string))))))
-
-(ert-deftest company-pseudo-tooltip-does-not-get-displaced ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (save-excursion (insert " ff"))
-      (company-mode)
-      (let ((company-frontends '(company-pseudo-tooltip-frontend))
-            (company-begin-commands '(self-insert-command))
-            (company-backends
-             (list (lambda (c &optional arg)
-                     (cl-case c (prefix "") (candidates '("a" "b" "c")))))))
-        (let (this-command)
-          (company-call 'complete))
-        (company-call 'open-line 1)
-        (should (eq 1 (overlay-start company-pseudo-tooltip-overlay)))))))
-
-(ert-deftest company-pseudo-tooltip-show ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-    (set-window-buffer nil (current-buffer))
-    (insert "aaaa\n  bb\nccccccc\nddd")
-    (search-backward "bb")
-    (let ((col (company--column))
-          (company-candidates-length 2)
-          (company-candidates '("123" "45"))
-          (company-backend 'ignore))
-      (company-pseudo-tooltip-show (company--row) col 0)
-      (let ((ov company-pseudo-tooltip-overlay))
-        ;; With margins.
-        (should (eq (overlay-get ov 'company-width) 5))
-        ;; FIXME: Make it 2?
-        (should (eq (overlay-get ov 'company-height) company-tooltip-limit))
-        (should (eq (overlay-get ov 'company-column) col))
-        (should (string= (overlay-get ov 'company-display)
-                         "\n  123 \nc 45  c\nddd\n")))))))
-
-(ert-deftest company-pseudo-tooltip-edit-updates-width ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (set-window-buffer nil (current-buffer))
-    (let ((company-candidates-length 5)
-          (company-candidates '("123" "45" "67" "89" "1011"))
-          (company-backend 'ignore)
-          (company-tooltip-limit 4)
-          (company-tooltip-offset-display 'scrollbar))
-      (company-pseudo-tooltip-show (company--row)
-                                   (company--column)
-                                   0)
-      (should (eq (overlay-get company-pseudo-tooltip-overlay 'company-width)
-                  6))
-      (company-pseudo-tooltip-edit 4)
-      (should (eq (overlay-get company-pseudo-tooltip-overlay 'company-width)
-                  7)))))
-
-(ert-deftest company-preview-show-with-annotations ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (save-excursion (insert "\n"))
-      (let ((company-candidates-length 1)
-            (company-candidates '("123")))
-        (company-preview-show-at-point (point))
-        (let* ((ov company-preview-overlay)
-               (str (overlay-get ov 'after-string)))
-          (should (string= str "123"))
-          (should (eq (get-text-property 0 'cursor str) t)))))))
-
-(ert-deftest company-pseudo-tooltip-show-with-annotations ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (insert " ")
-      (save-excursion (insert "\n"))
-      (let ((company-candidates-length 2)
-            (company-backend (lambda (action &optional arg &rest _ignore)
-                               (when (eq action 'annotation)
-                                 (cdr (assoc arg '(("123" . "(4)")))))))
-            (company-candidates '("123" "45"))
-            company-tooltip-align-annotations)
-        (company-pseudo-tooltip-show-at-point (point) 0)
-        (let ((ov company-pseudo-tooltip-overlay))
-          ;; With margins.
-          (should (eq (overlay-get ov 'company-width) 8))
-          (should (string= (overlay-get ov 'company-display)
-                           "\n 123(4) \n 45     \n")))))))
-
-(ert-deftest company-pseudo-tooltip-show-with-annotations-right-aligned ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (insert " ")
-      (save-excursion (insert "\n"))
-      (let ((company-candidates-length 3)
-            (company-backend (lambda (action &optional arg &rest _ignore)
-                               (when (eq action 'annotation)
-                                 (cdr (assoc arg '(("123" . "(4)")
-                                                   ("67" . "(891011)")))))))
-            (company-candidates '("123" "45" "67"))
-            (company-tooltip-align-annotations t))
-        (company-pseudo-tooltip-show-at-point (point) 0)
-        (let ((ov company-pseudo-tooltip-overlay))
-          ;; With margins.
-          (should (eq (overlay-get ov 'company-width) 13))
-          (should (string= (overlay-get ov 'company-display)
-                           "\n 123     (4) \n 45          \n 67 (891011) 
\n")))))))
-
-(ert-deftest company-create-lines-shows-numbers ()
-  (let ((company-show-numbers t)
-        (company-candidates '("x" "y" "z"))
-        (company-candidates-length 3)
-        (company-backend 'ignore))
-    (should (equal '(" x 1 " " y 2 " " z 3 ")
-                   (company--create-lines 0 999)))))
-
-(ert-deftest company-create-lines-truncates-annotations ()
-  (let* ((ww (company--window-width))
-         (data `(("1" . "(123)")
-                 ("2" . nil)
-                 ("3" . ,(concat "(" (make-string (- ww 2) ?4) ")"))
-                 (,(make-string ww ?4) . "<4>")))
-         (company-candidates (mapcar #'car data))
-         (company-candidates-length 4)
-         (company-tooltip-margin 1)
-         (company-backend (lambda (cmd &optional arg)
-                            (when (eq cmd 'annotation)
-                              (cdr (assoc arg data)))))
-         company-tooltip-align-annotations)
-    (should (equal (list (format " 1(123)%s " (company-space-string (- ww 8)))
-                         (format " 2%s " (company-space-string (- ww 3)))
-                         (format " 3(444%s " (make-string (- ww 7) ?4))
-                         (format " %s " (make-string (- ww 2) ?4)))
-                   (company--create-lines 0 999)))
-    (let ((company-tooltip-align-annotations t))
-      (should (equal (list (format " 1%s(123) " (company-space-string (- ww 
8)))
-                           (format " 2%s " (company-space-string (- ww 3)))
-                           (format " 3 (444%s " (make-string (- ww 8) ?4))
-                           (format " %s " (make-string (- ww 2) ?4)))
-                     (company--create-lines 0 999))))))
-
-(ert-deftest company-create-lines-truncates-common-part ()
-  (let* ((ww (company--window-width))
-         (company-candidates-length 2)
-         (company-tooltip-margin 1)
-         (company-backend #'ignore))
-    (let* ((company-common (make-string (- ww 3) ?1))
-           (company-candidates `(,(concat company-common "2")
-                                 ,(concat company-common "3"))))
-      (should (equal (list (format " %s2 " (make-string (- ww 3) ?1))
-                           (format " %s3 " (make-string (- ww 3) ?1)))
-                     (company--create-lines 0 999))))
-    (let* ((company-common (make-string (- ww 2) ?1))
-           (company-candidates `(,(concat company-common "2")
-                                 ,(concat company-common "3"))))
-      (should (equal (list (format " %s " company-common)
-                           (format " %s " company-common))
-                     (company--create-lines 0 999))))
-    (let* ((company-common (make-string ww ?1))
-           (company-candidates `(,(concat company-common "2")
-                                 ,(concat company-common "3")))
-           (res (company--create-lines 0 999)))
-      (should (equal (list (format " %s " (make-string (- ww 2) ?1))
-                           (format " %s " (make-string (- ww 2) ?1)))
-                     res))
-      (should (eq 'company-tooltip-common-selection
-                    (get-text-property (- ww 2) 'face
-                                       (car res))))
-      (should (eq 'company-tooltip-selection
-                  (get-text-property (1- ww) 'face
-                                     (car res))))
-      )))
-
-(ert-deftest company-create-lines-clears-out-non-printables ()
-  :tags '(interactive)
-  (let (company-show-numbers
-        (company-candidates (list
-                             (decode-coding-string "avalis\351e" 'utf-8)
-                             "avatar"))
-        (company-candidates-length 2)
-        (company-backend 'ignore))
-    (should (equal '(" avalis‗e    "
-                     " avatar      ")
-                   (company--create-lines 0 999)))))
-
-(ert-deftest company-create-lines-handles-multiple-width ()
-  :tags '(interactive)
-  (let (company-show-numbers
-        (company-candidates '("蛙蛙蛙蛙" "蛙abc"))
-        (company-candidates-length 2)
-        (company-backend 'ignore))
-    (should (equal '(" 蛙蛙蛙蛙 "
-                     " 蛙abc    ")
-                   (company--create-lines 0 999)))))
-
-(ert-deftest company-column-with-composition ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (insert "lambda ()")
-      (compose-region 1 (1+ (length "lambda")) "\\")
-      (should (= (company--column) 4)))))
-
-(ert-deftest company-column-with-line-prefix ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (insert "foo")
-      (put-text-property (point-min) (point) 'line-prefix "  ")
-      (should (= (company--column) 5)))))
-
-(ert-deftest company-column-with-line-prefix-on-empty-line ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (insert "\n")
-      (forward-char -1)
-      (put-text-property (point-min) (point-max) 'line-prefix "  ")
-      (should (= (company--column) 2)))))
-
-(ert-deftest company-column-with-tabs ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (insert "|\t|\t|\t(")
-      (let ((tab-width 8))
-        (should (= (company--column) 25))))))
-
-(ert-deftest company-row-with-header-line-format ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (should (= (company--row) 0))
-      (setq header-line-format "aaaaaaa")
-      (should (= (company--row) 0)))))
-
-(ert-deftest company-plainify ()
-  (let ((tab-width 8))
-    (should (equal-including-properties
-             (company-plainify "\tabc\td\t")
-             (concat "        "
-                     "abc     "
-                     "d       "))))
-  (should (equal-including-properties
-           (company-plainify (propertize "foobar" 'line-prefix "-*-"))
-           "-*-foobar")))
-
-(ert-deftest company-buffer-lines-with-lines-folded ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (insert (propertize "aaa\nbbb\nccc\nddd\n" 'display "aaa+\n"))
-    (insert "eee\nfff\nggg")
-    (should (equal (company-buffer-lines (point-min) (point-max))
-                   '("aaa" "eee" "fff" "ggg")))))
-
-(ert-deftest company-buffer-lines-with-multiline-display ()
-  :tags '(interactive)
-  (with-temp-buffer
-    (insert (propertize "a" 'display "bbb\nccc\ndddd\n"))
-    (insert "eee\nfff\nggg")
-    (should (equal (company-buffer-lines (point-min) (point-max))
-                   '("" "" "" "eee" "fff" "ggg")))))
-
-(ert-deftest company-modify-line ()
-  (let ((str "-*-foobar"))
-    (should (equal-including-properties
-             (company-modify-line str "zz" 4)
-             "-*-fzzbar"))
-    (should (equal-including-properties
-             (company-modify-line str "xx" 0)
-             "xx-foobar"))
-    (should (equal-including-properties
-             (company-modify-line str "zz" 10)
-             "-*-foobar zz"))))
-
-(ert-deftest company-scrollbar-bounds ()
-  (should (equal nil (company--scrollbar-bounds 0 3 3)))
-  (should (equal nil (company--scrollbar-bounds 0 4 3)))
-  (should (equal '(0 . 0) (company--scrollbar-bounds 0 1 2)))
-  (should (equal '(1 . 1) (company--scrollbar-bounds 2 2 4)))
-  (should (equal '(2 . 3) (company--scrollbar-bounds 7 4 12)))
-  (should (equal '(1 . 2) (company--scrollbar-bounds 3 4 12)))
-  (should (equal '(1 . 3) (company--scrollbar-bounds 4 5 11))))
-
-;;; Async
-
-(defun company-async-backend (command &optional arg)
-  (pcase command
-    (`prefix "foo")
-    (`candidates
-     (cons :async
-           (lambda (cb)
-             (run-with-timer 0.05 nil
-                             #'funcall cb '("abc" "abd")))))))
-
-(ert-deftest company-call-backend-forces-sync ()
-  (let ((company-backend 'company-async-backend)
-        (company-async-timeout 0.1))
-    (should (equal '("abc" "abd") (company-call-backend 'candidates)))))
-
-(ert-deftest company-call-backend-errors-on-timeout ()
-  (with-temp-buffer
-    (let* ((company-backend (lambda (command &optional _arg)
-                              (pcase command
-                                (`candidates (cons :async 'ignore)))))
-           (company-async-timeout 0.1)
-           (err (should-error (company-call-backend 'candidates "foo"))))
-      (should (string-match-p "async timeout" (cadr err))))))
-
-(ert-deftest company-call-backend-raw-passes-return-value-verbatim ()
-  (let ((company-backend 'company-async-backend))
-    (should (equal "foo" (company-call-backend-raw 'prefix)))
-    (should (equal :async (car (company-call-backend-raw 'candidates "foo"))))
-    (should (equal 'closure (cadr (company-call-backend-raw 'candidates 
"foo"))))))
-
-(ert-deftest company-manual-begin-forces-async-candidates-to-sync ()
-  (with-temp-buffer
-    (company-mode)
-    (let (company-frontends
-          company-transformers
-          (company-backends (list 'company-async-backend)))
-      (company-manual-begin)
-      (should (equal "foo" company-prefix))
-      (should (equal '("abc" "abd") company-candidates)))))
-
-(ert-deftest company-idle-begin-allows-async-candidates ()
-  (with-temp-buffer
-    (company-mode)
-    (let (company-frontends
-          company-transformers
-          (company-backends (list 'company-async-backend)))
-      (company-idle-begin (current-buffer) (selected-window)
-                          (buffer-chars-modified-tick) (point))
-      (should (null company-candidates))
-      (sleep-for 0.1)
-      (should (equal "foo" company-prefix))
-      (should (equal '("abc" "abd") company-candidates)))))
-
-(ert-deftest company-idle-begin-cancels-async-candidates-if-buffer-changed ()
-  (with-temp-buffer
-    (company-mode)
-    (let (company-frontends
-          (company-backends (list 'company-async-backend)))
-      (company-idle-begin (current-buffer) (selected-window)
-                          (buffer-chars-modified-tick) (point))
-      (should (null company-candidates))
-      (insert "a")
-      (sleep-for 0.1)
-      (should (null company-candidates)))))
-
-(ert-deftest company-idle-begin-async-allows-immediate-callbacks ()
-  (with-temp-buffer
-    (company-mode)
-    (let (company-frontends
-          (company-backends
-           (list (lambda (command &optional arg)
-                   (pcase command
-                     (`prefix (buffer-substring (point-min) (point)))
-                     (`candidates
-                      (let ((c (all-completions arg '("abc" "def"))))
-                        (cons :async
-                              (lambda (cb) (funcall cb c)))))
-                     (`no-cache t)))))
-          (company-minimum-prefix-length 0))
-      (company-idle-begin (current-buffer) (selected-window)
-                          (buffer-chars-modified-tick) (point))
-      (should (equal '("abc" "def") company-candidates))
-      (let ((last-command-event ?a))
-        (company-call 'self-insert-command 1))
-      (should (equal '("abc") company-candidates)))))
-
-(ert-deftest company-multi-backend-forces-prefix-to-sync ()
-  (with-temp-buffer
-    (let ((company-backend (list 'ignore
-                                 (lambda (command)
-                                   (should (eq command 'prefix))
-                                   (cons :async
-                                         (lambda (cb)
-                                           (run-with-timer
-                                            0.01 nil
-                                            (lambda () (funcall cb nil))))))
-                                 (lambda (command)
-                                   (should (eq command 'prefix))
-                                   "foo"))))
-      (should (equal "foo" (company-call-backend-raw 'prefix))))
-    (let ((company-backend (list (lambda (_command)
-                                   (cons :async
-                                         (lambda (cb)
-                                           (run-with-timer
-                                            0.01 nil
-                                            (lambda () (funcall cb "bar"))))))
-                                 (lambda (_command)
-                                   "foo"))))
-      (should (equal "bar" (company-call-backend-raw 'prefix))))))
-
-(ert-deftest company-multi-backend-merges-deferred-candidates ()
-  (with-temp-buffer
-    (let* ((immediate (lambda (command &optional arg)
-                        (pcase command
-                          (`prefix "foo")
-                          (`candidates
-                           (cons :async
-                                 (lambda (cb) (funcall cb '("f"))))))))
-           (company-backend (list 'ignore
-                                  (lambda (command &optional arg)
-                                    (pcase command
-                                      (`prefix "foo")
-                                      (`candidates
-                                       (should (equal arg "foo"))
-                                       (cons :async
-                                             (lambda (cb)
-                                               (run-with-timer
-                                                0.01 nil
-                                                (lambda () (funcall cb '("a" 
"b")))))))))
-                                  (lambda (command &optional arg)
-                                    (pcase command
-                                      (`prefix "foo")
-                                      (`candidates '("c" "d" "e"))))
-                                  immediate)))
-      (should (equal :async (car (company-call-backend-raw 'candidates 
"foo"))))
-      (should (equal '("a" "b" "c" "d" "e" "f")
-                     (company-call-backend 'candidates "foo")))
-      (let ((company-backend (list immediate)))
-        (should (equal '("f") (company-call-backend 'candidates "foo")))))))
-
-;;; Transformers
-
-(ert-deftest company-occurrence-prefer-closest-above ()
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (insert "foo0
-foo1
-")
-      (save-excursion
-        (insert "
-foo3
-foo2"))
-      (let ((company-backend 'company-dabbrev)
-            (company-occurrence-weight-function
-             'company-occurrence-prefer-closest-above))
-        (should (equal '("foo1" "foo0" "foo3" "foo2" "foo4")
-                       (company-sort-by-occurrence
-                        '("foo0" "foo1" "foo2" "foo3" "foo4"))))))))
-
-(ert-deftest company-occurrence-prefer-any-closest ()
-  (with-temp-buffer
-    (save-window-excursion
-      (set-window-buffer nil (current-buffer))
-      (insert "foo0
-foo1
-")
-      (save-excursion
-        (insert "
-foo3
-foo2"))
-      (let ((company-backend 'company-dabbrev)
-            (company-occurrence-weight-function
-             'company-occurrence-prefer-any-closest))
-        (should (equal '("foo1" "foo3" "foo0" "foo2" "foo4")
-                       (company-sort-by-occurrence
-                        '("foo0" "foo1" "foo2" "foo3" "foo4"))))))))
-
-;;; Template
-
-(ert-deftest company-template-removed-after-the-last-jump ()
-  (with-temp-buffer
-    (insert "{ }")
-    (goto-char 2)
-    (let ((tpl (company-template-declare-template (point) (1- (point-max)))))
-      (save-excursion
-        (dotimes (i 2)
-          (insert " ")
-          (company-template-add-field tpl (point) "foo")))
-      (company-call 'template-forward-field)
-      (should (= 3 (point)))
-      (company-call 'template-forward-field)
-      (should (= 7 (point)))
-      (company-call 'template-forward-field)
-      (should (= 11 (point)))
-      (should (zerop (length (overlay-get tpl 'company-template-fields))))
-      (should (null (overlay-buffer tpl))))))
-
-(ert-deftest company-template-removed-after-input-and-jump ()
-  (with-temp-buffer
-    (insert "{ }")
-    (goto-char 2)
-    (let ((tpl (company-template-declare-template (point) (1- (point-max)))))
-      (save-excursion
-        (insert " ")
-        (company-template-add-field tpl (point) "bar"))
-      (company-call 'template-move-to-first tpl)
-      (should (= 3 (point)))
-      (dolist (c (string-to-list "tee"))
-        (let ((last-command-event c))
-          (company-call 'self-insert-command 1)))
-      (should (string= "{ tee }" (buffer-string)))
-      (should (overlay-buffer tpl))
-      (company-call 'template-forward-field)
-      (should (= 7 (point)))
-      (should (null (overlay-buffer tpl))))))
-
 (defun company-call (name &rest args)
   (let* ((maybe (intern (format "company-%s" name)))
          (command (if (fboundp maybe) maybe name)))
@@ -902,44 +33,4 @@ foo2"))
     (let ((this-command command))
       (run-hooks 'post-command-hook))))
 
-(ert-deftest company-template-c-like-templatify ()
-  (with-temp-buffer
-    (let ((text "foo(int a, short b)"))
-      (insert text)
-      (company-template-c-like-templatify text)
-      (should (equal "foo(arg0, arg1)" (buffer-string)))
-      (should (looking-at "arg0"))
-      (should (equal "int a"
-                     (overlay-get (company-template-field-at) 'display))))))
-
-(ert-deftest company-template-c-like-templatify-trims-after-closing-paren ()
-  (with-temp-buffer
-    (let ((text "foo(int a, short b)!@ #1334 a"))
-      (insert text)
-      (company-template-c-like-templatify text)
-      (should (equal "foo(arg0, arg1)" (buffer-string)))
-      (should (looking-at "arg0")))))
-
-(ert-deftest company-template-c-like-templatify-generics ()
-  (with-temp-buffer
-    (let ((text "foo<TKey, TValue>(int i, Dict<TKey, TValue>, long l)"))
-      (insert text)
-      (company-template-c-like-templatify text)
-      (should (equal "foo<arg0, arg1>(arg2, arg3, arg4)" (buffer-string)))
-      (should (looking-at "arg0"))
-      (should (equal "TKey" (overlay-get (company-template-field-at) 
'display)))
-      (search-forward "arg3")
-      (forward-char -1)
-      (should (equal "Dict<TKey, TValue>"
-                     (overlay-get (company-template-field-at) 'display))))))
-
-;;; Clang
-
-(ert-deftest company-clang-objc-templatify ()
-  (with-temp-buffer
-    (let ((text "createBookWithTitle:andAuthor:"))
-      (insert text)
-      (company-clang-objc-templatify text)
-      (should (equal "createBookWithTitle:arg0 andAuthor:arg1" 
(buffer-string)))
-      (should (looking-at "arg0"))
-      (should (null (overlay-get (company-template-field-at) 'display))))))
+(provide 'company-tests)
diff --git a/packages/company/company.el b/packages/company/company.el
index cf88ddd..9658006 100644
--- a/packages/company/company.el
+++ b/packages/company/company.el
@@ -1,11 +1,11 @@
 ;;; company.el --- Modular text completion framework  -*- lexical-binding: t 
-*-
 
-;; Copyright (C) 2009-2014  Free Software Foundation, Inc.
+;; Copyright (C) 2009-2015  Free Software Foundation, Inc.
 
 ;; Author: Nikolaj Schumacher
 ;; Maintainer: Dmitry Gutov <address@hidden>
 ;; URL: http://company-mode.github.io/
-;; Version: 0.8.7
+;; Version: 0.8.8
 ;; Keywords: abbrev, convenience, matching
 ;; Package-Requires: ((emacs "24.1") (cl-lib "0.5"))
 
@@ -340,20 +340,20 @@ The first argument is the command requested from the 
back-end.  It is one
 of the following:
 
 `prefix': The back-end should return the text to be completed.  It must be
-text immediately before point.  Returning nil passes control to the next
-back-end.  The function should return `stop' if it should complete but
-cannot (e.g. if it is in the middle of a string).  Instead of a string,
-the back-end may return a cons where car is the prefix and cdr is used in
-`company-minimum-prefix-length' test.  It must be either number or t, and
-in the latter case the test automatically succeeds.
+text immediately before point.  Returning nil from this command passes
+control to the next back-end.  The function should return `stop' if it
+should complete but cannot (e.g. if it is in the middle of a string).
+Instead of a string, the back-end may return a cons where car is the prefix
+and cdr is used in `company-minimum-prefix-length' test.  It must be either
+number or t, and in the latter case the test automatically succeeds.
 
 `candidates': The second argument is the prefix to be completed.  The
 return value should be a list of candidates that match the prefix.
 
 Non-prefix matches are also supported (candidates that don't start with the
 prefix, but match it in some backend-defined way).  Backends that use this
-feature must disable cache (return t to `no-cache') and should also respond
-to `match'.
+feature must disable cache (return t to `no-cache') and might also want to
+respond to `match'.
 
 Optional commands:
 
@@ -384,10 +384,10 @@ be kept if they have different annotations.  For that to 
work properly,
 backends should store the related information on candidates using text
 properties.
 
-`match': The second argument is a completion candidate.  Backends that
-provide non-prefix completions should return the position of the end of
-text in the candidate that matches `prefix'.  It will be used when
-rendering the popup.
+`match': The second argument is a completion candidate.  Return the index
+after the end of text matching `prefix' within the candidate string.  It
+will be used when rendering the popup.  This command only makes sense for
+backends that provide non-prefix completion.
 
 `require-match': If this returns t, the user is not allowed to enter
 anything not offered as a candidate.  Use with care!  The default value nil
@@ -449,9 +449,11 @@ even if the back-end uses the asynchronous calling 
convention."
 (put 'company-backends 'safe-local-variable 'company-safe-backends-p)
 
 (defcustom company-transformers nil
-  "Functions to change the list of candidates received from backends,
-after sorting and removal of duplicates (if appropriate).
-Each function gets called with the return value of the previous one."
+  "Functions to change the list of candidates received from backends.
+
+Each function gets called with the return value of the previous one.
+The first one gets passed the list of candidates, already sorted and
+without duplicates."
   :type '(choice
           (const :tag "None" nil)
           (const :tag "Sort by occurrence" (company-sort-by-occurrence))
@@ -767,10 +769,10 @@ means that `company-mode' is always turned on except in 
`message-mode' buffers."
   (interactive)
   (setq this-command last-command))
 
-(global-set-key '[31415926] 'company-ignore)
+(global-set-key '[company-dummy-event] 'company-ignore)
 
 (defun company-input-noop ()
-  (push 31415926 unread-command-events))
+  (push 'company-dummy-event unread-command-events))
 
 (defun company--posn-col-row (posn)
   (let ((col (car (posn-col-row posn)))
@@ -978,8 +980,9 @@ Controlled by `company-auto-complete'.")
   ;; XXX: Return value we check here is subject to change.
   (if (eq (company-call-backend 'ignore-case) 'keep-prefix)
       (insert (company-strip-prefix candidate))
-    (delete-region (- (point) (length company-prefix)) (point))
-    (insert candidate)))
+    (unless (equal company-prefix candidate)
+      (delete-region (- (point) (length company-prefix)) (point))
+      (insert candidate))))
 
 (defmacro company-with-candidate-inserted (candidate &rest body)
   "Evaluate BODY with CANDIDATE temporarily inserted.
@@ -1054,13 +1057,6 @@ can retrieve meta-data for them."
                                               (symbol-name backend))))
           (setq company-lighter (format " company-<%s>" name)))))))
 
-(defun company-apply-predicate (candidates predicate)
-  (let (new)
-    (dolist (c candidates)
-      (when (funcall predicate c)
-        (push c new)))
-    (nreverse new)))
-
 (defun company-update-candidates (candidates)
   (setq company-candidates-length (length candidates))
   (if (> company-selection 0)
@@ -1077,21 +1073,17 @@ can retrieve meta-data for them."
                                          company-selection)))))
     (setq company-selection 0
           company-candidates candidates))
-  ;; Save in cache:
-  (push (cons company-prefix company-candidates) company-candidates-cache)
   ;; Calculate common.
   (let ((completion-ignore-case (company-call-backend 'ignore-case)))
     ;; We want to support non-prefix completion, so filtering is the
     ;; responsibility of each respective backend, not ours.
     ;; On the other hand, we don't want to replace non-prefix input in
-    ;; `company-complete-common'.
+    ;; `company-complete-common', unless there's only one candidate.
     (setq company-common
           (if (cdr company-candidates)
-              (let ((common (try-completion company-prefix 
company-candidates)))
-                (if (eq common t)
-                    ;; Mulple equal strings, probably with different
-                    ;; annotations.
-                    company-prefix
+              (let ((common (try-completion "" company-candidates)))
+                (when (string-prefix-p company-prefix common
+                                       completion-ignore-case)
                   common))
             (car company-candidates)))))
 
@@ -1108,11 +1100,14 @@ can retrieve meta-data for them."
                                            company-candidates-cache)))
                 (setq candidates (all-completions prefix prev))
                 (cl-return t)))))
-        ;; no cache match, call back-end
-        (setq candidates
-              (company--process-candidates
-               (company--fetch-candidates prefix))))
-    (setq candidates (company--transform-candidates candidates))
+        (progn
+          ;; No cache match, call the backend.
+          (setq candidates (company--preprocess-candidates
+                            (company--fetch-candidates prefix)))
+          ;; Save in cache.
+          (push (cons prefix candidates) company-candidates-cache)))
+    ;; Only now apply the predicate and transformers.
+    (setq candidates (company--postprocess-candidates candidates))
     (when candidates
       (if (or (cdr candidates)
               (not (eq t (compare-strings (car candidates) nil nil
@@ -1137,13 +1132,13 @@ can retrieve meta-data for them."
          (cdr c)
          (lambda (candidates)
            (if (not (and candidates (eq res 'done)))
-               ;; Fetcher called us back right away.
+               ;; There's no completions to display,
+               ;; or the fetcher called us back right away.
                (setq res candidates)
              (setq company-backend backend
                    company-candidates-cache
                    (list (cons prefix
-                               (company--process-candidates
-                                candidates))))
+                               (company--preprocess-candidates candidates))))
              (company-idle-begin buf win tick pt)))))
       ;; FIXME: Relying on the fact that the callers
       ;; will interpret nil as "do nothing" is shaky.
@@ -1151,33 +1146,40 @@ can retrieve meta-data for them."
       (or res
           (progn (setq res 'done) nil)))))
 
-(defun company--process-candidates (candidates)
-  (when company-candidates-predicate
-    (setq candidates
-          (company-apply-predicate candidates
-                                   company-candidates-predicate)))
+(defun company--preprocess-candidates (candidates)
   (unless (company-call-backend 'sorted)
     (setq candidates (sort candidates 'string<)))
   (when (company-call-backend 'duplicates)
     (company--strip-duplicates candidates))
   candidates)
 
+(defun company--postprocess-candidates (candidates)
+  (when (or company-candidates-predicate company-transformers)
+    (setq candidates (copy-sequence candidates)))
+  (when company-candidates-predicate
+    (setq candidates (cl-delete-if-not company-candidates-predicate 
candidates)))
+  (company--transform-candidates candidates))
+
 (defun company--strip-duplicates (candidates)
-  (let ((c2 candidates))
+  (let ((c2 candidates)
+        (annos 'unk))
     (while c2
       (setcdr c2
-              (let ((str (car c2))
-                    (anno 'unk))
-                (pop c2)
+              (let ((str (pop c2)))
                 (while (let ((str2 (car c2)))
                          (if (not (equal str str2))
-                             nil
-                           (when (eq anno 'unk)
-                             (setq anno (company-call-backend
-                                         'annotation str)))
-                           (equal anno
-                                  (company-call-backend
-                                   'annotation str2))))
+                             (progn
+                               (setq annos 'unk)
+                               nil)
+                           (when (eq annos 'unk)
+                             (setq annos (list (company-call-backend
+                                                'annotation str))))
+                           (let ((anno2 (company-call-backend
+                                         'annotation str2)))
+                             (if (member anno2 annos)
+                                 t
+                               (push anno2 annos)
+                               nil))))
                   (pop c2))
                 c2)))))
 
@@ -1288,15 +1290,14 @@ from the rest of the back-ends in the group, if any, 
will be left at the end."
        (not company-candidates)
        (let ((company-idle-delay 'now))
          (condition-case-unless-debug err
-             (company--perform)
+             (progn
+               (company--perform)
+               ;; Return non-nil if active.
+               company-candidates)
            (error (message "Company: An error occurred in auto-begin")
                   (message "%s" (error-message-string err))
                   (company-cancel))
-           (quit (company-cancel)))))
-  (unless company-candidates
-    (setq company-backend nil))
-  ;; Return non-nil if active.
-  company-candidates)
+           (quit (company-cancel))))))
 
 (defun company-manual-begin ()
   (interactive)
@@ -1304,7 +1305,8 @@ from the rest of the back-ends in the group, if any, will 
be left at the end."
   (setq company--manual-action t)
   (unwind-protect
       (let ((company-minimum-prefix-length 0))
-        (company-auto-begin))
+        (or company-candidates
+            (company-auto-begin)))
     (unless company-candidates
       (setq company--manual-action nil))))
 
@@ -1366,6 +1368,7 @@ from the rest of the back-ends in the group, if any, will 
be left at the end."
      ((and (or (not (company-require-match-p))
                ;; Don't require match if the new prefix
                ;; doesn't continue the old one, and the latter was a match.
+               (not (stringp new-prefix))
                (<= (length new-prefix) (length company-prefix)))
            (member company-prefix company-candidates))
       ;; Last input was a success,
@@ -1455,7 +1458,8 @@ from the rest of the back-ends in the group, if any, will 
be left at the end."
 (defun company--perform ()
   (or (and company-candidates (company--continue))
       (and (company--should-complete) (company--begin-new)))
-  (when company-candidates
+  (if (not company-candidates)
+      (setq company-backend nil)
     (setq company-point (point)
           company--point-max (point-max))
     (company-ensure-emulation-alist)
@@ -1565,15 +1569,16 @@ from the rest of the back-ends in the group, if any, 
will be left at the end."
 
 ;;; search 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
-(defvar-local company-search-string nil)
+(defvar-local company-search-string "")
 
 (defvar-local company-search-lighter " Search: \"\"")
 
-(defvar-local company-search-old-map nil)
+(defvar-local company-search-filtering nil
+  "Non-nil to filter the completion candidates by the search string")
 
-(defvar-local company-search-old-selection 0)
+(defvar-local company--search-old-selection 0)
 
-(defun company-search (text lines)
+(defun company--search (text lines)
   (let ((quoted (regexp-quote text))
         (i 0))
     (cl-dolist (line lines)
@@ -1581,24 +1586,53 @@ from the rest of the back-ends in the group, if any, 
will be left at the end."
         (cl-return i))
       (cl-incf i))))
 
+(defun company-search-keypad ()
+  (interactive)
+  (let* ((name (symbol-name last-command-event))
+         (last-command-event (aref name (1- (length name)))))
+    (company-search-printing-char)))
+
 (defun company-search-printing-char ()
   (interactive)
-  (company-search-assert-enabled)
-  (let* ((ss (concat company-search-string (string last-command-event)))
-         (pos (company-search ss (nthcdr company-selection 
company-candidates))))
+  (company--search-assert-enabled)
+  (let ((ss (concat company-search-string (string last-command-event))))
+    (when company-search-filtering
+      (company--search-update-predicate ss))
+    (company--search-update-string ss)))
+
+(defun company--search-update-predicate (&optional ss)
+  (let* ((company-candidates-predicate
+          (and (not (string= ss ""))
+               company-search-filtering
+               (lambda (candidate) (string-match ss candidate))))
+         (cc (company-calculate-candidates company-prefix)))
+    (unless cc (error "No match"))
+    (company-update-candidates cc)))
+
+(defun company--search-update-string (new)
+  (let* ((pos (company--search new (nthcdr company-selection 
company-candidates))))
     (if (null pos)
         (ding)
-      (setq company-search-string ss
-            company-search-lighter (concat " Search: \"" ss "\""))
+      (setq company-search-string new
+            company-search-lighter (format " %s: \"%s\""
+                                           (if company-search-filtering
+                                               "Filter"
+                                             "Search")
+                                           new))
       (company-set-selection (+ company-selection pos) t))))
 
+(defun company--search-assert-input ()
+  (company--search-assert-enabled)
+  (when (string= company-search-string "")
+    (error "Empty search string")))
+
 (defun company-search-repeat-forward ()
   "Repeat the incremental search in completion candidates forward."
   (interactive)
-  (company-search-assert-enabled)
-  (let ((pos (company-search company-search-string
-                             (cdr (nthcdr company-selection
-                                          company-candidates)))))
+  (company--search-assert-input)
+  (let ((pos (company--search company-search-string
+                              (cdr (nthcdr company-selection
+                                           company-candidates)))))
     (if (null pos)
         (ding)
       (company-set-selection (+ company-selection pos 1) t))))
@@ -1606,52 +1640,47 @@ from the rest of the back-ends in the group, if any, 
will be left at the end."
 (defun company-search-repeat-backward ()
   "Repeat the incremental search in completion candidates backwards."
   (interactive)
-  (company-search-assert-enabled)
-  (let ((pos (company-search company-search-string
-                             (nthcdr (- company-candidates-length
-                                        company-selection)
-                                     (reverse company-candidates)))))
+  (company--search-assert-input)
+  (let ((pos (company--search company-search-string
+                              (nthcdr (- company-candidates-length
+                                         company-selection)
+                                      (reverse company-candidates)))))
     (if (null pos)
         (ding)
       (company-set-selection (- company-selection pos 1) t))))
 
-(defun company-create-match-predicate ()
-  (let ((ss company-search-string))
-    (setq company-candidates-predicate
-          (when ss (lambda (candidate) (string-match ss candidate)))))
-  (company-update-candidates
-   (company-apply-predicate company-candidates company-candidates-predicate))
-  ;; Invalidate cache.
-  (setq company-candidates-cache (cons company-prefix company-candidates)))
-
-(defun company-filter-printing-char ()
-  (interactive)
-  (company-search-assert-enabled)
-  (company-search-printing-char)
-  (company-create-match-predicate)
-  (company-call-frontends 'update))
-
-(defun company-search-kill-others ()
-  "Limit the completion candidates to the ones matching the search string."
+(defun company-search-toggle-filtering ()
+  "Toggle `company-search-filtering'."
   (interactive)
-  (company-search-assert-enabled)
-  (company-create-match-predicate)
-  (company-search-mode 0)
-  (company-call-frontends 'update))
+  (company--search-assert-enabled)
+  (setq company-search-filtering (not company-search-filtering))
+  (let ((ss company-search-string))
+    (company--search-update-predicate ss)
+    (company--search-update-string ss)))
 
 (defun company-search-abort ()
   "Abort searching the completion candidates."
   (interactive)
-  (company-search-assert-enabled)
-  (company-set-selection company-search-old-selection t)
-  (company-search-mode 0))
+  (company--search-assert-enabled)
+  (company-search-mode 0)
+  (company-set-selection company--search-old-selection t))
 
 (defun company-search-other-char ()
   (interactive)
-  (company-search-assert-enabled)
+  (company--search-assert-enabled)
   (company-search-mode 0)
   (company--unread-last-input))
 
+(defun company-search-delete-char ()
+  (interactive)
+  (company--search-assert-enabled)
+  (if (string= company-search-string "")
+      (ding)
+    (let ((ss (substring company-search-string 0 -1)))
+      (when company-search-filtering
+        (company--search-update-predicate ss))
+      (company--search-update-string ss))))
+
 (defvar company-search-map
   (let ((i 0)
         (keymap (make-keymap)))
@@ -1672,18 +1701,22 @@ from the rest of the back-ends in the group, if any, 
will be left at the end."
     (while (< i 256)
       (define-key keymap (vector i) 'company-search-printing-char)
       (cl-incf i))
+    (dotimes (i 10)
+      (define-key keymap (read (format "[kp-%s]" i)) 'company-search-keypad))
     (let ((meta-map (make-sparse-keymap)))
       (define-key keymap (char-to-string meta-prefix-char) meta-map)
       (define-key keymap [escape] meta-map))
     (define-key keymap (vector meta-prefix-char t) 'company-search-other-char)
+    (define-key keymap (kbd "M-n") 'company-select-next)
+    (define-key keymap (kbd "M-p") 'company-select-previous)
     (define-key keymap "\e\e\e" 'company-search-other-char)
     (define-key keymap [escape escape escape] 'company-search-other-char)
-    (define-key keymap (kbd "DEL") 'company-search-other-char)
-
+    (define-key keymap (kbd "DEL") 'company-search-delete-char)
+    (define-key keymap [backspace] 'company-search-delete-char)
     (define-key keymap "\C-g" 'company-search-abort)
     (define-key keymap "\C-s" 'company-search-repeat-forward)
     (define-key keymap "\C-r" 'company-search-repeat-backward)
-    (define-key keymap "\C-o" 'company-search-kill-others)
+    (define-key keymap "\C-o" 'company-search-toggle-filtering)
     keymap)
   "Keymap used for incrementally searching the completion candidates.")
 
@@ -1695,15 +1728,19 @@ Don't start this directly, use 
`company-search-candidates' or
   (if company-search-mode
       (if (company-manual-begin)
           (progn
-            (setq company-search-old-selection company-selection)
+            (setq company--search-old-selection company-selection)
             (company-call-frontends 'update))
         (setq company-search-mode nil))
     (kill-local-variable 'company-search-string)
     (kill-local-variable 'company-search-lighter)
-    (kill-local-variable 'company-search-old-selection)
+    (kill-local-variable 'company-search-filtering)
+    (kill-local-variable 'company--search-old-selection)
+    (when company-backend
+      (company--search-update-predicate "")
+      (company-call-frontends 'update))
     (company-enable-overriding-keymap company-active-map)))
 
-(defun company-search-assert-enabled ()
+(defun company--search-assert-enabled ()
   (company-assert-enabled)
   (unless company-search-mode
     (company-uninstall-map)
@@ -1716,11 +1753,12 @@ Don't start this directly, use 
`company-search-candidates' or
 - `company-search-repeat-forward' (\\[company-search-repeat-forward])
 - `company-search-repeat-backward' (\\[company-search-repeat-backward])
 - `company-search-abort' (\\[company-search-abort])
+- `company-search-delete-char' (\\[company-search-delete-char])
 
 Regular characters are appended to the search string.
 
-The command `company-search-kill-others' (\\[company-search-kill-others])
-uses the search string to limit the completion candidates."
+The command `company-search-toggle-filtering' 
(\\[company-search-toggle-filtering])
+uses the search string to filter the completion candidates."
   (interactive)
   (company-search-mode 1)
   (company-enable-overriding-keymap company-search-map))
@@ -1736,10 +1774,10 @@ uses the search string to limit the completion 
candidates."
 (defun company-filter-candidates ()
   "Start filtering the completion candidates incrementally.
 This works the same way as `company-search-candidates' immediately
-followed by `company-search-kill-others' after each input."
+followed by `company-search-toggle-filtering'."
   (interactive)
   (company-search-mode 1)
-  (company-enable-overriding-keymap company-filter-map))
+  (setq company-search-filtering t))
 
 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
@@ -1843,6 +1881,16 @@ and invoke the normal binding."
       (when company-common
         (company--insert-candidate company-common)))))
 
+(defun company-complete-common-or-cycle ()
+  "Insert the common part of all candidates, or select the next one."
+  (interactive)
+  (when (company-manual-begin)
+    (let ((tick (buffer-chars-modified-tick)))
+      (call-interactively 'company-complete-common)
+      (when (eq tick (buffer-chars-modified-tick))
+        (let ((company-selection-wrap-around t))
+          (call-interactively 'company-select-next))))))
+
 (defun company-complete ()
   "Insert the common part of all candidates or the current selection.
 The first time this is called, the common part is inserted, the second
@@ -1857,18 +1905,26 @@ inserted."
       (setq this-command 'company-complete-common))))
 
 (defun company-complete-number (n)
-  "Insert the Nth candidate.
+  "Insert the Nth candidate visible in the tooltip.
 To show the number next to the candidates in some back-ends, enable
 `company-show-numbers'.  When called interactively, uses the last typed
 character, stripping the modifiers.  That character must be a digit."
   (interactive
-   (list (let ((n (- (event-basic-type last-command-event) ?0)))
+   (list (let* ((type (event-basic-type last-command-event))
+                (char (if (characterp type)
+                          ;; Number on the main row.
+                          type
+                        ;; Keypad number, if bound directly.
+                        (car (last (string-to-list (symbol-name type))))))
+                (n (- char ?0)))
            (if (zerop n) 10 n))))
   (when (company-manual-begin)
-    (and (or (< n 1) (> n company-candidates-length))
+    (and (or (< n 1) (> n (- company-candidates-length
+                             company-tooltip-offset)))
          (error "No candidate number %d" n))
     (cl-decf n)
-    (company-finish (nth n company-candidates))))
+    (company-finish (nth (+ n company-tooltip-offset)
+                         company-candidates))))
 
 
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 
@@ -2095,7 +2151,6 @@ If SHOW-VERSION is non-nil, show the version in the echo 
area."
                          (string-width company-common)
                        0)))
          (ann-ralign company-tooltip-align-annotations)
-         (value (company--clean-string value))
          (ann-truncate (< width
                           (+ (length value) (length annotation)
                              (if ann-ralign 1 0))))
@@ -2134,17 +2189,13 @@ If SHOW-VERSION is non-nil, show the version in the 
echo area."
                              mouse-face company-tooltip-mouse)
                            line))
     (when selected
-      (if (and company-search-string
+      (if (and (not (string= company-search-string ""))
                (string-match (regexp-quote company-search-string) value
                              (length company-prefix)))
           (let ((beg (+ margin (match-beginning 0)))
                 (end (+ margin (match-end 0))))
             (add-text-properties beg end '(face company-tooltip-search)
-                                 line)
-            (when (< beg common)
-              (add-text-properties beg common
-                                   '(face company-tooltip-common-selection)
-                                   line)))
+                                 line))
         (add-text-properties 0 width '(face company-tooltip-selection
                                        mouse-face company-tooltip-selection)
                              line)
@@ -2178,7 +2229,8 @@ If SHOW-VERSION is non-nil, show the version in the echo 
area."
 (defun company-buffer-lines (beg end)
   (goto-char beg)
   (let (lines lines-moved)
-    (while (and (> (setq lines-moved (vertical-motion 1)) 0)
+    (while (and (not (eobp)) ; http://debbugs.gnu.org/19553
+                (> (setq lines-moved (vertical-motion 1)) 0)
                 (<= (point) end))
       (let ((bound (min end (1- (point)))))
         ;; A visual line can contain several physical lines (e.g. with 
outline's
@@ -2213,7 +2265,7 @@ If SHOW-VERSION is non-nil, show the version in the echo 
area."
       (floor (window-screen-lines))
     (window-body-height)))
 
-(defsubst company--window-width ()
+(defun company--window-width ()
   (let ((ww (window-body-width)))
     ;; Account for the line continuation column.
     (when (zerop (cadr (window-fringes)))
@@ -2226,6 +2278,10 @@ If SHOW-VERSION is non-nil, show the version in the echo 
area."
                (let ((margins (window-margins)))
                  (+ (or (car margins) 0)
                     (or (cdr margins) 0)))))
+    (when (and word-wrap
+               (version< emacs-version "24.4.51.5"))
+      ;; http://debbugs.gnu.org/18384
+      (cl-decf ww))
     ww))
 
 (defun company--replacement-string (lines old column nl &optional align-top)
@@ -2275,7 +2331,6 @@ If SHOW-VERSION is non-nil, show the version in the echo 
area."
 
 (defun company--create-lines (selection limit)
   (let ((len company-candidates-length)
-        (numbered 99999)
         (window-width (company--window-width))
         lines
         width
@@ -2317,11 +2372,14 @@ If SHOW-VERSION is non-nil, show the version in the 
echo area."
     (dotimes (_ len)
       (let* ((value (pop lines-copy))
              (annotation (company-call-backend 'annotation value)))
-        (when (and annotation company-tooltip-align-annotations)
-          ;; `lisp-completion-at-point' adds a space.
-          (setq annotation (comment-string-strip annotation t nil)))
+        (setq value (company--clean-string value))
+        (when annotation
+          (when company-tooltip-align-annotations
+            ;; `lisp-completion-at-point' adds a space.
+            (setq annotation (comment-string-strip annotation t nil)))
+          (setq annotation (company--clean-string annotation)))
         (push (cons value annotation) items)
-        (setq width (max (+ (string-width value)
+        (setq width (max (+ (length value)
                             (if (and annotation 
company-tooltip-align-annotations)
                                 (1+ (length annotation))
                               (length annotation)))
@@ -2329,16 +2387,13 @@ If SHOW-VERSION is non-nil, show the version in the 
echo area."
 
     (setq width (min window-width
                      (max company-tooltip-minimum-width
-                          (if (and company-show-numbers
-                                   (< company-tooltip-offset 10))
+                          (if company-show-numbers
                               (+ 2 width)
                             width))))
 
-    ;; number can make tooltip too long
-    (when company-show-numbers
-      (setq numbered company-tooltip-offset))
-
-    (let ((items (nreverse items)) new)
+    (let ((items (nreverse items))
+          (numbered (if company-show-numbers 0 99999))
+          new)
       (when previous
         (push (company--scrollpos-line previous width) new))
 
@@ -2414,7 +2469,7 @@ Returns a negative number if the tooltip should be 
displayed above point."
              (end (save-excursion
                     (move-to-window-line (+ row (abs height)))
                     (point)))
-             (ov (make-overlay (if nl beg (1- beg)) end nil t t))
+             (ov (make-overlay (if nl beg (1- beg)) end nil t))
              (args (list (mapcar 'company-plainify
                                  (company-buffer-lines beg end))
                          column nl above)))
@@ -2519,8 +2574,6 @@ Returns a negative number if the tooltip should be 
displayed above point."
 (defun company-preview-show-at-point (pos)
   (company-preview-hide)
 
-  (setq company-preview-overlay (make-overlay pos pos))
-
   (let ((completion (nth company-selection company-candidates)))
     (setq completion (propertize completion 'face 'company-preview))
     (add-text-properties 0 (length company-common)
@@ -2538,11 +2591,26 @@ Returns a negative number if the tooltip should be 
displayed above point."
 
     (and (equal pos (point))
          (not (equal completion ""))
-         (add-text-properties 0 1 '(cursor t) completion))
-
-    (let ((ov company-preview-overlay))
-      (overlay-put ov 'after-string completion)
-      (overlay-put ov 'window (selected-window)))))
+         (add-text-properties 0 1 '(cursor 1) completion))
+
+    (let* ((beg pos)
+           (pto company-pseudo-tooltip-overlay)
+           (ptf-workaround (and
+                            pto
+                            (char-before pos)
+                            (eq pos (overlay-start pto)))))
+      ;; Try to accomodate for the pseudo-tooltip overlay,
+      ;; which may start at the same position if it's at eol.
+      (when ptf-workaround
+        (cl-decf beg)
+        (setq completion (concat (buffer-substring beg pos) completion)))
+
+      (setq company-preview-overlay (make-overlay beg pos))
+
+      (let ((ov company-preview-overlay))
+        (overlay-put ov (if ptf-workaround 'display 'after-string)
+                     completion)
+        (overlay-put ov 'window (selected-window))))))
 
 (defun company-preview-hide ()
   (when company-preview-overlay
diff --git a/packages/company/test/all.el b/packages/company/test/all.el
new file mode 100644
index 0000000..6d64a62
--- /dev/null
+++ b/packages/company/test/all.el
@@ -0,0 +1,28 @@
+;;; all-tests.el --- company-mode tests  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2015  Free Software Foundation, Inc.
+
+;; Author: Dmitry Gutov
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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.
+
+;; GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+(defvar company-test-path
+  (file-name-directory (or load-file-name buffer-file-name)))
+
+(require 'ert)
+
+(dolist (test-file (directory-files company-test-path t "-tests.el$"))
+  (load test-file nil t))
diff --git a/packages/company/test/async-tests.el 
b/packages/company/test/async-tests.el
new file mode 100644
index 0000000..5d8be3e
--- /dev/null
+++ b/packages/company/test/async-tests.el
@@ -0,0 +1,161 @@
+;;; async-tests.el --- company-mode tests  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2015  Free Software Foundation, Inc.
+
+;; Author: Dmitry Gutov
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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.
+
+;; GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+(require 'company-tests)
+
+(defun company-async-backend (command &optional _)
+  (pcase command
+    (`prefix "foo")
+    (`candidates
+     (cons :async
+           (lambda (cb)
+             (run-with-timer 0.05 nil
+                             #'funcall cb '("abc" "abd")))))))
+
+(ert-deftest company-call-backend-forces-sync ()
+  (let ((company-backend 'company-async-backend)
+        (company-async-timeout 0.1))
+    (should (equal '("abc" "abd") (company-call-backend 'candidates)))))
+
+(ert-deftest company-call-backend-errors-on-timeout ()
+  (with-temp-buffer
+    (let* ((company-backend (lambda (command &optional _arg)
+                              (pcase command
+                                (`candidates (cons :async 'ignore)))))
+           (company-async-timeout 0.1)
+           (err (should-error (company-call-backend 'candidates "foo"))))
+      (should (string-match-p "async timeout" (cadr err))))))
+
+(ert-deftest company-call-backend-raw-passes-return-value-verbatim ()
+  (let ((company-backend 'company-async-backend))
+    (should (equal "foo" (company-call-backend-raw 'prefix)))
+    (should (equal :async (car (company-call-backend-raw 'candidates "foo"))))
+    (should (equal 'closure (cadr (company-call-backend-raw 'candidates 
"foo"))))))
+
+(ert-deftest company-manual-begin-forces-async-candidates-to-sync ()
+  (with-temp-buffer
+    (company-mode)
+    (let (company-frontends
+          company-transformers
+          (company-backends (list 'company-async-backend)))
+      (company-manual-begin)
+      (should (equal "foo" company-prefix))
+      (should (equal '("abc" "abd") company-candidates)))))
+
+(ert-deftest company-idle-begin-allows-async-candidates ()
+  (with-temp-buffer
+    (company-mode)
+    (let (company-frontends
+          company-transformers
+          (company-backends (list 'company-async-backend)))
+      (company-idle-begin (current-buffer) (selected-window)
+                          (buffer-chars-modified-tick) (point))
+      (should (null company-candidates))
+      (sleep-for 0.1)
+      (should (equal "foo" company-prefix))
+      (should (equal '("abc" "abd") company-candidates)))))
+
+(ert-deftest company-idle-begin-cancels-async-candidates-if-buffer-changed ()
+  (with-temp-buffer
+    (company-mode)
+    (let (company-frontends
+          (company-backends (list 'company-async-backend)))
+      (company-idle-begin (current-buffer) (selected-window)
+                          (buffer-chars-modified-tick) (point))
+      (should (null company-candidates))
+      (insert "a")
+      (sleep-for 0.1)
+      (should (null company-candidates)))))
+
+(ert-deftest company-idle-begin-async-allows-immediate-callbacks ()
+  (with-temp-buffer
+    (company-mode)
+    (let (company-frontends
+          (company-backends
+           (list (lambda (command &optional arg)
+                   (pcase command
+                     (`prefix (buffer-substring (point-min) (point)))
+                     (`candidates
+                      (let ((c (all-completions arg '("abc" "def"))))
+                        (cons :async
+                              (lambda (cb) (funcall cb c)))))
+                     (`no-cache t)))))
+          (company-minimum-prefix-length 0))
+      (company-idle-begin (current-buffer) (selected-window)
+                          (buffer-chars-modified-tick) (point))
+      (should (equal '("abc" "def") company-candidates))
+      (let ((last-command-event ?a))
+        (company-call 'self-insert-command 1))
+      (should (equal '("abc") company-candidates)))))
+
+(ert-deftest company-multi-backend-forces-prefix-to-sync ()
+  (with-temp-buffer
+    (let ((company-backend (list 'ignore
+                                 (lambda (command)
+                                   (should (eq command 'prefix))
+                                   (cons :async
+                                         (lambda (cb)
+                                           (run-with-timer
+                                            0.01 nil
+                                            (lambda () (funcall cb nil))))))
+                                 (lambda (command)
+                                   (should (eq command 'prefix))
+                                   "foo"))))
+      (should (equal "foo" (company-call-backend-raw 'prefix))))
+    (let ((company-backend (list (lambda (_command)
+                                   (cons :async
+                                         (lambda (cb)
+                                           (run-with-timer
+                                            0.01 nil
+                                            (lambda () (funcall cb "bar"))))))
+                                 (lambda (_command)
+                                   "foo"))))
+      (should (equal "bar" (company-call-backend-raw 'prefix))))))
+
+(ert-deftest company-multi-backend-merges-deferred-candidates ()
+  (with-temp-buffer
+    (let* ((immediate (lambda (command &optional _)
+                        (pcase command
+                          (`prefix "foo")
+                          (`candidates
+                           (cons :async
+                                 (lambda (cb) (funcall cb '("f"))))))))
+           (company-backend (list 'ignore
+                                  (lambda (command &optional arg)
+                                    (pcase command
+                                      (`prefix "foo")
+                                      (`candidates
+                                       (should (equal arg "foo"))
+                                       (cons :async
+                                             (lambda (cb)
+                                               (run-with-timer
+                                                0.01 nil
+                                                (lambda () (funcall cb '("a" 
"b")))))))))
+                                  (lambda (command &optional _)
+                                    (pcase command
+                                      (`prefix "foo")
+                                      (`candidates '("c" "d" "e"))))
+                                  immediate)))
+      (should (equal :async (car (company-call-backend-raw 'candidates 
"foo"))))
+      (should (equal '("a" "b" "c" "d" "e" "f")
+                     (company-call-backend 'candidates "foo")))
+      (let ((company-backend (list immediate)))
+        (should (equal '("f") (company-call-backend 'candidates "foo")))))))
diff --git a/packages/company/test/clang-tests.el 
b/packages/company/test/clang-tests.el
new file mode 100644
index 0000000..c8c03b7
--- /dev/null
+++ b/packages/company/test/clang-tests.el
@@ -0,0 +1,25 @@
+(require 'company-tests)
+(require 'company-clang)
+
+(ert-deftest company-clang-objc-templatify ()
+  (with-temp-buffer
+    (let ((text "createBookWithTitle:andAuthor:"))
+      (insert text)
+      (company-clang-objc-templatify text)
+      (should (equal "createBookWithTitle:arg0 andAuthor:arg1" 
(buffer-string)))
+      (should (looking-at "arg0"))
+      (should (null (overlay-get (company-template-field-at) 'display))))))
+
+(ert-deftest company-clang-simple-annotation ()
+  (let ((str (propertize
+              "foo" 'meta
+              "wchar_t * wmemchr(wchar_t *__p, wchar_t __c, size_t __n)")))
+    (should (equal (company-clang 'annotation str)
+                   "(wchar_t *__p, wchar_t __c, size_t __n)"))))
+
+(ert-deftest company-clang-generic-annotation ()
+  (let ((str (propertize
+              "foo" 'meta
+              "shared_ptr<_Tp> make_shared<typename _Tp>(_Args &&__args...)")))
+    (should (equal (company-clang 'annotation str)
+                   "<typename _Tp>(_Args &&__args...)"))))
diff --git a/packages/company/test/core-tests.el 
b/packages/company/test/core-tests.el
new file mode 100644
index 0000000..13e547e
--- /dev/null
+++ b/packages/company/test/core-tests.el
@@ -0,0 +1,481 @@
+;;; core-tests.el --- company-mode tests  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2015  Free Software Foundation, Inc.
+
+;; Author: Dmitry Gutov
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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.
+
+;; GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+(require 'company-tests)
+
+(ert-deftest company-good-prefix ()
+  (let ((company-minimum-prefix-length 5)
+        company-abort-manual-when-too-short
+        company--manual-action            ;idle begin
+        (company-selection-changed t))    ;has no effect
+    (should (eq t (company--good-prefix-p "address@hidden")))
+    (should (eq nil (company--good-prefix-p "abcd")))
+    (should (eq nil (company--good-prefix-p 'stop)))
+    (should (eq t (company--good-prefix-p '("foo" . 5))))
+    (should (eq nil (company--good-prefix-p '("foo" . 4))))
+    (should (eq t (company--good-prefix-p '("foo" . t))))))
+
+(ert-deftest company--manual-prefix-set-and-unset ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abc" "abd")))))))
+      (company-manual-begin)
+      (should (equal "ab" company--manual-prefix))
+      (company-abort)
+      (should (null company--manual-prefix)))))
+
+(ert-deftest company-abort-manual-when-too-short ()
+  (let ((company-minimum-prefix-length 5)
+        (company-abort-manual-when-too-short t)
+        (company-selection-changed t))    ;has not effect
+    (let ((company--manual-action nil))   ;idle begin
+      (should (eq t (company--good-prefix-p "address@hidden")))
+      (should (eq t (company--good-prefix-p '("foo" . 5))))
+      (should (eq t (company--good-prefix-p '("foo" . t)))))
+    (let ((company--manual-action t)
+          (company--manual-prefix "abc")) ;manual begin from this prefix
+      (should (eq t (company--good-prefix-p "address@hidden")))
+      (should (eq nil (company--good-prefix-p "ab")))
+      (should (eq nil (company--good-prefix-p 'stop)))
+      (should (eq t (company--good-prefix-p '("foo" . 4))))
+      (should (eq t (company--good-prefix-p "abcd")))
+      (should (eq t (company--good-prefix-p "abc")))
+      (should (eq t (company--good-prefix-p '("bar" . t)))))))
+
+(ert-deftest company-common-with-non-prefix-completion ()
+  (let ((company-backend #'ignore)
+        (company-prefix "abc")
+        company-candidates
+        company-candidates-length
+        company-candidates-cache
+        company-common)
+    (company-update-candidates '("abc" "def-abc"))
+    (should (null company-common))
+    (company-update-candidates '("abc" "abe-c"))
+    (should (null company-common))
+    (company-update-candidates '("abcd" "abcde" "abcdf"))
+    (should (equal "abcd" company-common))))
+
+(ert-deftest company-multi-backend-with-lambdas ()
+  (let ((company-backend
+         (list (lambda (command &optional _ &rest _r)
+                 (cl-case command
+                   (prefix "z")
+                   (candidates '("a" "b"))))
+               (lambda (command &optional _ &rest _r)
+                 (cl-case command
+                   (prefix "z")
+                   (candidates '("c" "d")))))))
+    (should (equal (company-call-backend 'candidates "z") '("a" "b" "c" 
"d")))))
+
+(ert-deftest company-multi-backend-filters-backends-by-prefix ()
+  (let ((company-backend
+         (list (lambda (command &optional _ &rest _r)
+                 (cl-case command
+                   (prefix (cons "z" t))
+                   (candidates '("a" "b"))))
+               (lambda (command &optional _ &rest _r)
+                 (cl-case command
+                   (prefix "t")
+                   (candidates '("c" "d"))))
+               (lambda (command &optional _ &rest _r)
+                 (cl-case command
+                   (prefix "z")
+                   (candidates '("e" "f")))))))
+    (should (equal (company-call-backend 'candidates "z") '("a" "b" "e" 
"f")))))
+
+(ert-deftest company-multi-backend-remembers-candidate-backend ()
+  (let ((company-backend
+         (list (lambda (command &optional _)
+                 (cl-case command
+                   (ignore-case nil)
+                   (annotation "1")
+                   (candidates '("a" "c"))
+                   (post-completion "13")))
+               (lambda (command &optional _)
+                 (cl-case command
+                   (ignore-case t)
+                   (annotation "2")
+                   (candidates '("b" "d"))
+                   (post-completion "42")))
+               (lambda (command &optional _)
+                 (cl-case command
+                   (annotation "3")
+                   (candidates '("e"))
+                   (post-completion "74"))))))
+    (let ((candidates (company-calculate-candidates nil)))
+      (should (equal candidates '("a" "b" "c" "d" "e")))
+      (should (equal t (company-call-backend 'ignore-case)))
+      (should (equal "1" (company-call-backend 'annotation (nth 0 
candidates))))
+      (should (equal "2" (company-call-backend 'annotation (nth 1 
candidates))))
+      (should (equal "13" (company-call-backend 'post-completion (nth 2 
candidates))))
+      (should (equal "42" (company-call-backend 'post-completion (nth 3 
candidates))))
+      (should (equal "3" (company-call-backend 'annotation (nth 4 
candidates))))
+      (should (equal "74" (company-call-backend 'post-completion (nth 4 
candidates)))))))
+
+(ert-deftest company-multi-backend-handles-keyword-with ()
+  (let ((primo (lambda (command &optional _)
+                 (cl-case command
+                   (prefix "a")
+                   (candidates '("abb" "abc" "abd")))))
+        (secundo (lambda (command &optional _)
+                   (cl-case command
+                     (prefix "a")
+                     (candidates '("acc" "acd"))))))
+    (let ((company-backend (list 'ignore 'ignore :with secundo)))
+      (should (null (company-call-backend 'prefix))))
+    (let ((company-backend (list 'ignore primo :with secundo)))
+      (should (equal "a" (company-call-backend 'prefix)))
+      (should (equal '("abb" "abc" "abd" "acc" "acd")
+                     (company-call-backend 'candidates "a"))))))
+
+(ert-deftest company-begin-backend-failure-doesnt-break-company-backends ()
+  (with-temp-buffer
+    (insert "a")
+    (company-mode)
+    (should-error
+     (company-begin-backend #'ignore))
+    (let (company-frontends
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix "a")
+                     (candidates '("a" "ab" "ac")))))))
+      (let (this-command)
+        (company-call 'complete))
+      (should (eq 3 company-candidates-length)))))
+
+(ert-deftest company-require-match-explicit ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          (company-require-match 'company-explicit-action-p)
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abc" "abd")))))))
+      (let (this-command)
+        (company-complete))
+      (let ((last-command-event ?e))
+        (company-call 'self-insert-command 1))
+      (should (eq 2 company-candidates-length))
+      (should (eq 3 (point))))))
+
+(ert-deftest company-dont-require-match-when-idle ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          (company-minimum-prefix-length 2)
+          (company-require-match 'company-explicit-action-p)
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abc" "abd")))))))
+      (company-idle-begin (current-buffer) (selected-window)
+                          (buffer-chars-modified-tick) (point))
+      (should (eq 2 company-candidates-length))
+      (let ((last-command-event ?e))
+        (company-call 'self-insert-command 1))
+      (should (eq nil company-candidates-length))
+      (should (eq 4 (point))))))
+
+(ert-deftest company-dont-require-match-if-was-a-match-and-old-prefix-ended ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          company-auto-complete
+          (company-require-match t)
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (company-grab-word))
+                     (candidates '("abc" "ab" "abd"))
+                     (sorted t))))))
+      (let (this-command)
+        (company-complete))
+      (let ((last-command-event ?e))
+        (company-call 'self-insert-command 1))
+      (should (eq 3 company-candidates-length))
+      (should (eq 3 (point)))
+      (let ((last-command-event ? ))
+        (company-call 'self-insert-command 1))
+      (should (null company-candidates-length))
+      (should (eq 4 (point))))))
+
+(ert-deftest company-dont-require-match-if-was-a-match-and-new-prefix-is-stop 
()
+  (with-temp-buffer
+    (company-mode)
+    (insert "c")
+    (let (company-frontends
+          (company-require-match t)
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (if (> (point) 2)
+                                 'stop
+                               (buffer-substring (point-min) (point))))
+                     (candidates '("a" "b" "c")))))))
+      (let (this-command)
+        (company-complete))
+      (should (eq 3 company-candidates-length))
+      (let ((last-command-event ?e))
+        (company-call 'self-insert-command 1))
+      (should (not company-candidates)))))
+
+(ert-deftest company-should-complete-whitelist ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          company-begin-commands
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abc" "abd")))))))
+      (let ((company-continue-commands nil))
+        (let (this-command)
+          (company-complete))
+        (company-call 'backward-delete-char 1)
+        (should (null company-candidates-length)))
+      (let ((company-continue-commands '(backward-delete-char)))
+        (let (this-command)
+          (company-complete))
+        (company-call 'backward-delete-char 1)
+        (should (eq 2 company-candidates-length))))))
+
+(ert-deftest company-should-complete-blacklist ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          company-begin-commands
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abc" "abd")))))))
+      (let ((company-continue-commands '(not backward-delete-char)))
+        (let (this-command)
+          (company-complete))
+        (company-call 'backward-delete-char 1)
+        (should (null company-candidates-length)))
+      (let ((company-continue-commands '(not backward-delete-char-untabify)))
+        (let (this-command)
+          (company-complete))
+        (company-call 'backward-delete-char 1)
+        (should (eq 2 company-candidates-length))))))
+
+(ert-deftest company-auto-complete-explicit ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          (company-auto-complete 'company-explicit-action-p)
+          (company-auto-complete-chars '(? ))
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abcd" "abef")))))))
+      (let (this-command)
+        (company-complete))
+      (let ((last-command-event ? ))
+        (company-call 'self-insert-command 1))
+      (should (string= "abcd " (buffer-string))))))
+
+(ert-deftest company-no-auto-complete-when-idle ()
+  (with-temp-buffer
+    (insert "ab")
+    (company-mode)
+    (let (company-frontends
+          (company-auto-complete 'company-explicit-action-p)
+          (company-auto-complete-chars '(? ))
+          (company-minimum-prefix-length 2)
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abcd" "abef")))))))
+      (company-idle-begin (current-buffer) (selected-window)
+                          (buffer-chars-modified-tick) (point))
+      (let ((last-command-event ? ))
+        (company-call 'self-insert-command 1))
+      (should (string= "ab " (buffer-string))))))
+
+(ert-deftest company-clears-explicit-action-when-no-matches ()
+  (with-temp-buffer
+    (company-mode)
+    (let (company-frontends
+          company-backends)
+      (company-call 'manual-begin) ;; fails
+      (should (null company-candidates))
+      (should (null (company-explicit-action-p))))))
+
+(ert-deftest company-ignore-case-replaces-prefix ()
+  (with-temp-buffer
+    (company-mode)
+    (let (company-frontends
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abcd" "abef"))
+                     (ignore-case t))))))
+      (insert "A")
+      (let (this-command)
+        (company-complete))
+      (should (string= "ab" (buffer-string)))
+      (delete-char -2)
+      (insert "A") ; hack, to keep it in one test
+      (company-complete-selection)
+      (should (string= "abcd" (buffer-string))))))
+
+(ert-deftest company-ignore-case-with-keep-prefix ()
+  (with-temp-buffer
+    (insert "AB")
+    (company-mode)
+    (let (company-frontends
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("abcd" "abef"))
+                     (ignore-case 'keep-prefix))))))
+      (let (this-command)
+        (company-complete))
+      (company-complete-selection)
+      (should (string= "ABcd" (buffer-string))))))
+
+(ert-deftest company-non-prefix-completion ()
+  (with-temp-buffer
+    (insert "tc")
+    (company-mode)
+    (let (company-frontends
+          (company-backends
+           (list (lambda (command &optional _)
+                   (cl-case command
+                     (prefix (buffer-substring (point-min) (point)))
+                     (candidates '("tea-cup" "teal-color")))))))
+      (let (this-command)
+        (company-complete))
+      (should (string= "tc" (buffer-string)))
+      (company-complete-selection)
+      (should (string= "tea-cup" (buffer-string))))))
+
+(defvar ct-sorted nil)
+
+(defun ct-equal-including-properties (list1 list2)
+  (or (and (not list1) (not list2))
+      (and (ert-equal-including-properties (car list1) (car list2))
+           (ct-equal-including-properties (cdr list1) (cdr list2)))))
+
+(ert-deftest company-strips-duplicates-within-groups ()
+  (let* ((kvs '(("a" . "b")
+                ("a" . nil)
+                ("a" . "b")
+                ("a" . "c")
+                ("a" . "b")
+                ("b" . "c")
+                ("b" . nil)
+                ("a" . "b")))
+         (fn (lambda (kvs)
+               (mapcar (lambda (kv) (propertize (car kv) 'ann (cdr kv)))
+                       kvs)))
+         (company-backend
+          (lambda (command &optional arg)
+            (pcase command
+              (`prefix "")
+              (`sorted ct-sorted)
+              (`duplicates t)
+              (`annotation (get-text-property 0 'ann arg)))))
+         (reference '(("a" . "b")
+                      ("a" . nil)
+                      ("a" . "c")
+                      ("b" . "c")
+                      ("b" . nil)
+                      ("a" . "b"))))
+    (let ((ct-sorted t))
+      (should (ct-equal-including-properties
+               (company--preprocess-candidates (funcall fn kvs))
+               (funcall fn reference))))
+    (should (ct-equal-including-properties
+             (company--preprocess-candidates (funcall fn kvs))
+             (funcall fn (butlast reference))))))
+
+;;; Row and column
+
+(ert-deftest company-column-with-composition ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert "lambda ()")
+      (compose-region 1 (1+ (length "lambda")) "\\")
+      (should (= (company--column) 4)))))
+
+(ert-deftest company-column-with-line-prefix ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert "foo")
+      (put-text-property (point-min) (point) 'line-prefix "  ")
+      (should (= (company--column) 5)))))
+
+(ert-deftest company-column-with-line-prefix-on-empty-line ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert "\n")
+      (forward-char -1)
+      (put-text-property (point-min) (point-max) 'line-prefix "  ")
+      (should (= (company--column) 2)))))
+
+(ert-deftest company-column-with-tabs ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert "|\t|\t|\t(")
+      (let ((tab-width 8))
+        (should (= (company--column) 25))))))
+
+(ert-deftest company-row-with-header-line-format ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (should (= (company--row) 0))
+      (setq header-line-format "aaaaaaa")
+      (should (= (company--row) 0)))))
diff --git a/packages/company/company-elisp-tests.el 
b/packages/company/test/elisp-tests.el
similarity index 97%
rename from packages/company/company-elisp-tests.el
rename to packages/company/test/elisp-tests.el
index 9b7cba3..7fd02de 100644
--- a/packages/company/company-elisp-tests.el
+++ b/packages/company/test/elisp-tests.el
@@ -1,6 +1,6 @@
-;;; company-elisp-tests.el --- company-elisp tests
+;;; elisp-tests.el --- company-elisp tests
 
-;; Copyright (C) 2013-2014  Free Software Foundation, Inc.
+;; Copyright (C) 2013-2015  Free Software Foundation, Inc.
 
 ;; Author: Dmitry Gutov
 
@@ -19,12 +19,9 @@
 ;; You should have received a copy of the GNU General Public License
 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
 
-
-;;; Commentary:
-;;
-
 ;;; Code:
 
+(require 'company-tests)
 (require 'company-elisp)
 
 (defmacro company-elisp-with-buffer (contents &rest body)
diff --git a/packages/company/test/frontends-tests.el 
b/packages/company/test/frontends-tests.el
new file mode 100644
index 0000000..a10f914
--- /dev/null
+++ b/packages/company/test/frontends-tests.el
@@ -0,0 +1,298 @@
+;;; frontends-tests.el --- company-mode tests  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2015  Free Software Foundation, Inc.
+
+;; Author: Dmitry Gutov
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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.
+
+;; GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+(require 'company-tests)
+
+(ert-deftest company-pseudo-tooltip-does-not-get-displaced ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (save-excursion (insert " ff"))
+      (company-mode)
+      (let ((company-frontends '(company-pseudo-tooltip-frontend))
+            (company-begin-commands '(self-insert-command))
+            (company-backends
+             (list (lambda (c &optional _)
+                     (cl-case c (prefix "") (candidates '("a" "b" "c")))))))
+        (let (this-command)
+          (company-call 'complete))
+        (company-call 'open-line 1)
+        (should (eq 1 (overlay-start company-pseudo-tooltip-overlay)))))))
+
+(ert-deftest company-pseudo-tooltip-show ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+    (set-window-buffer nil (current-buffer))
+    (insert "aaaa\n  bb\nccccccc\nddd")
+    (search-backward "bb")
+    (let ((col (company--column))
+          (company-candidates-length 2)
+          (company-candidates '("123" "45"))
+          (company-backend 'ignore))
+      (company-pseudo-tooltip-show (company--row) col 0)
+      (let ((ov company-pseudo-tooltip-overlay))
+        ;; With margins.
+        (should (eq (overlay-get ov 'company-width) 5))
+        ;; FIXME: Make it 2?
+        (should (eq (overlay-get ov 'company-height) company-tooltip-limit))
+        (should (eq (overlay-get ov 'company-column) col))
+        (should (string= (overlay-get ov 'company-display)
+                         "\n  123 \nc 45  c\nddd\n")))))))
+
+(ert-deftest company-pseudo-tooltip-edit-updates-width ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (set-window-buffer nil (current-buffer))
+    (let ((company-candidates-length 5)
+          (company-candidates '("123" "45" "67" "89" "1011"))
+          (company-backend 'ignore)
+          (company-tooltip-limit 4)
+          (company-tooltip-offset-display 'scrollbar))
+      (company-pseudo-tooltip-show (company--row)
+                                   (company--column)
+                                   0)
+      (should (eq (overlay-get company-pseudo-tooltip-overlay 'company-width)
+                  6))
+      (company-pseudo-tooltip-edit 4)
+      (should (eq (overlay-get company-pseudo-tooltip-overlay 'company-width)
+                  7)))))
+
+(ert-deftest company-preview-show-with-annotations ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (save-excursion (insert "\n"))
+      (let ((company-candidates-length 1)
+            (company-candidates '("123")))
+        (company-preview-show-at-point (point))
+        (let* ((ov company-preview-overlay)
+               (str (overlay-get ov 'after-string)))
+          (should (string= str "123"))
+          (should (eq (get-text-property 0 'cursor str) 1)))))))
+
+(ert-deftest company-pseudo-tooltip-show-with-annotations ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert " ")
+      (save-excursion (insert "\n"))
+      (let ((company-candidates-length 2)
+            (company-backend (lambda (action &optional arg &rest _ignore)
+                               (when (eq action 'annotation)
+                                 (cdr (assoc arg '(("123" . "(4)")))))))
+            (company-candidates '("123" "45"))
+            company-tooltip-align-annotations)
+        (company-pseudo-tooltip-show-at-point (point) 0)
+        (let ((ov company-pseudo-tooltip-overlay))
+          ;; With margins.
+          (should (eq (overlay-get ov 'company-width) 8))
+          (should (string= (overlay-get ov 'company-display)
+                           "\n 123(4) \n 45     \n")))))))
+
+(ert-deftest company-pseudo-tooltip-show-with-annotations-right-aligned ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert " ")
+      (save-excursion (insert "\n"))
+      (let ((company-candidates-length 3)
+            (company-backend (lambda (action &optional arg &rest _ignore)
+                               (when (eq action 'annotation)
+                                 (cdr (assoc arg '(("123" . "(4)")
+                                                   ("67" . "(891011)")))))))
+            (company-candidates '("123" "45" "67"))
+            (company-tooltip-align-annotations t))
+        (company-pseudo-tooltip-show-at-point (point) 0)
+        (let ((ov company-pseudo-tooltip-overlay))
+          ;; With margins.
+          (should (eq (overlay-get ov 'company-width) 13))
+          (should (string= (overlay-get ov 'company-display)
+                           "\n 123     (4) \n 45          \n 67 (891011) 
\n")))))))
+
+(ert-deftest company-create-lines-shows-numbers ()
+  (let ((company-show-numbers t)
+        (company-candidates '("x" "y" "z"))
+        (company-candidates-length 3)
+        (company-backend 'ignore))
+    (should (equal '(" x 1 " " y 2 " " z 3 ")
+                   (company--create-lines 0 999)))))
+
+(ert-deftest company-create-lines-truncates-annotations ()
+  (let* ((ww (company--window-width))
+         (data `(("1" . "(123)")
+                 ("2" . nil)
+                 ("3" . ,(concat "(" (make-string (- ww 2) ?4) ")"))
+                 (,(make-string ww ?4) . "<4>")))
+         (company-candidates (mapcar #'car data))
+         (company-candidates-length 4)
+         (company-tooltip-margin 1)
+         (company-backend (lambda (cmd &optional arg)
+                            (when (eq cmd 'annotation)
+                              (cdr (assoc arg data)))))
+         company-tooltip-align-annotations)
+    (should (equal (list (format " 1(123)%s " (company-space-string (- ww 8)))
+                         (format " 2%s " (company-space-string (- ww 3)))
+                         (format " 3(444%s " (make-string (- ww 7) ?4))
+                         (format " %s " (make-string (- ww 2) ?4)))
+                   (company--create-lines 0 999)))
+    (let ((company-tooltip-align-annotations t))
+      (should (equal (list (format " 1%s(123) " (company-space-string (- ww 
8)))
+                           (format " 2%s " (company-space-string (- ww 3)))
+                           (format " 3 (444%s " (make-string (- ww 8) ?4))
+                           (format " %s " (make-string (- ww 2) ?4)))
+                     (company--create-lines 0 999))))))
+
+(ert-deftest company-create-lines-truncates-common-part ()
+  (let* ((ww (company--window-width))
+         (company-candidates-length 2)
+         (company-tooltip-margin 1)
+         (company-backend #'ignore))
+    (let* ((company-common (make-string (- ww 3) ?1))
+           (company-candidates `(,(concat company-common "2")
+                                 ,(concat company-common "3"))))
+      (should (equal (list (format " %s2 " (make-string (- ww 3) ?1))
+                           (format " %s3 " (make-string (- ww 3) ?1)))
+                     (company--create-lines 0 999))))
+    (let* ((company-common (make-string (- ww 2) ?1))
+           (company-candidates `(,(concat company-common "2")
+                                 ,(concat company-common "3"))))
+      (should (equal (list (format " %s " company-common)
+                           (format " %s " company-common))
+                     (company--create-lines 0 999))))
+    (let* ((company-common (make-string ww ?1))
+           (company-candidates `(,(concat company-common "2")
+                                 ,(concat company-common "3")))
+           (res (company--create-lines 0 999)))
+      (should (equal (list (format " %s " (make-string (- ww 2) ?1))
+                           (format " %s " (make-string (- ww 2) ?1)))
+                     res))
+      (should (eq 'company-tooltip-common-selection
+                    (get-text-property (- ww 2) 'face
+                                       (car res))))
+      (should (eq 'company-tooltip-selection
+                  (get-text-property (1- ww) 'face
+                                     (car res))))
+      )))
+
+(ert-deftest company-create-lines-clears-out-non-printables ()
+  :tags '(interactive)
+  (let (company-show-numbers
+        (company-candidates (list
+                             (decode-coding-string "avalis\351e" 'utf-8)
+                             "avatar"))
+        (company-candidates-length 2)
+        (company-backend 'ignore))
+    (should (equal '(" avalis‗e "
+                     " avatar   ")
+                   (company--create-lines 0 999)))))
+
+(ert-deftest company-create-lines-handles-multiple-width ()
+  :tags '(interactive)
+  (let (company-show-numbers
+        (company-candidates '("蛙蛙蛙蛙" "蛙abc"))
+        (company-candidates-length 2)
+        (company-backend 'ignore))
+    (should (equal '(" 蛙蛙蛙蛙 "
+                     " 蛙abc    ")
+                   (company--create-lines 0 999)))))
+
+(ert-deftest company-create-lines-handles-multiple-width-in-annotation ()
+  (let* (company-show-numbers
+         (alist '(("a" . " ︸") ("b" . " ︸︸")))
+         (company-candidates (mapcar #'car alist))
+         (company-candidates-length 2)
+         (company-backend (lambda (c &optional a)
+                            (when (eq c 'annotation)
+                              (assoc-default a alist)))))
+    (should (equal '(" a ︸   "
+                     " b ︸︸ ")
+                   (company--create-lines 0 999)))))
+
+(ert-deftest company-column-with-composition ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert "lambda ()")
+      (compose-region 1 (1+ (length "lambda")) "\\")
+      (should (= (company--column) 4)))))
+
+(ert-deftest company-plainify ()
+  (let ((tab-width 8))
+    (should (equal-including-properties
+             (company-plainify "\tabc\td\t")
+             (concat "        "
+                     "abc     "
+                     "d       "))))
+  (should (equal-including-properties
+           (company-plainify (propertize "foobar" 'line-prefix "-*-"))
+           "-*-foobar")))
+
+(ert-deftest company-buffer-lines-with-lines-folded ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (insert (propertize "aaa\nbbb\nccc\nddd\n" 'display "aaa+\n"))
+    (insert "eee\nfff\nggg")
+    (should (equal (company-buffer-lines (point-min) (point-max))
+                   '("aaa" "eee" "fff" "ggg")))))
+
+(ert-deftest company-buffer-lines-with-multiline-display ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (insert (propertize "a" 'display "bbb\nccc\ndddd\n"))
+    (insert "eee\nfff\nggg")
+    (should (equal (company-buffer-lines (point-min) (point-max))
+                   '("" "" "" "eee" "fff" "ggg")))))
+
+(ert-deftest company-buffer-lines-with-multiline-after-string-at-eob ()
+  :tags '(interactive)
+  (with-temp-buffer
+    (insert "a\nb\nc\n")
+    (let ((ov (make-overlay (point-max) (point-max) nil t t)))
+      (overlay-put ov 'after-string "~\n~\n~"))
+    (should (equal (company-buffer-lines (point-min) (point-max))
+                   '("a" "b" "c")))))
+
+(ert-deftest company-modify-line ()
+  (let ((str "-*-foobar"))
+    (should (equal-including-properties
+             (company-modify-line str "zz" 4)
+             "-*-fzzbar"))
+    (should (equal-including-properties
+             (company-modify-line str "xx" 0)
+             "xx-foobar"))
+    (should (equal-including-properties
+             (company-modify-line str "zz" 10)
+             "-*-foobar zz"))))
+
+(ert-deftest company-scrollbar-bounds ()
+  (should (equal nil (company--scrollbar-bounds 0 3 3)))
+  (should (equal nil (company--scrollbar-bounds 0 4 3)))
+  (should (equal '(0 . 0) (company--scrollbar-bounds 0 1 2)))
+  (should (equal '(1 . 1) (company--scrollbar-bounds 2 2 4)))
+  (should (equal '(2 . 3) (company--scrollbar-bounds 7 4 12)))
+  (should (equal '(1 . 2) (company--scrollbar-bounds 3 4 12)))
+  (should (equal '(1 . 3) (company--scrollbar-bounds 4 5 11))))
diff --git a/packages/company/test/keywords-tests.el 
b/packages/company/test/keywords-tests.el
new file mode 100644
index 0000000..05843b2
--- /dev/null
+++ b/packages/company/test/keywords-tests.el
@@ -0,0 +1,32 @@
+;;; keywords-tests.el --- company-keywords tests  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2011, 2013-2015  Free Software Foundation, Inc.
+
+;; Author: Nikolaj Schumacher
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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.
+
+;; GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+(require 'company-keywords)
+
+(ert-deftest company-sorted-keywords ()
+  "Test that keywords in `company-keywords-alist' are in alphabetical order."
+  (dolist (pair company-keywords-alist)
+    (when (consp (cdr pair))
+      (let ((prev (cadr pair)))
+        (dolist (next (cddr pair))
+          (should (not (equal prev next)))
+          (should (string< prev next))
+          (setq prev next))))))
diff --git a/packages/company/test/template-tests.el 
b/packages/company/test/template-tests.el
new file mode 100644
index 0000000..09548c4
--- /dev/null
+++ b/packages/company/test/template-tests.el
@@ -0,0 +1,91 @@
+;;; template-tests.el --- company-mode tests  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2015  Free Software Foundation, Inc.
+
+;; Author: Dmitry Gutov
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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.
+
+;; GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+(require 'company-tests)
+(require 'company-template)
+
+(ert-deftest company-template-removed-after-the-last-jump ()
+  (with-temp-buffer
+    (insert "{ }")
+    (goto-char 2)
+    (let ((tpl (company-template-declare-template (point) (1- (point-max)))))
+      (save-excursion
+        (dotimes (_ 2)
+          (insert " ")
+          (company-template-add-field tpl (point) "foo")))
+      (company-call 'template-forward-field)
+      (should (= 3 (point)))
+      (company-call 'template-forward-field)
+      (should (= 7 (point)))
+      (company-call 'template-forward-field)
+      (should (= 11 (point)))
+      (should (zerop (length (overlay-get tpl 'company-template-fields))))
+      (should (null (overlay-buffer tpl))))))
+
+(ert-deftest company-template-removed-after-input-and-jump ()
+  (with-temp-buffer
+    (insert "{ }")
+    (goto-char 2)
+    (let ((tpl (company-template-declare-template (point) (1- (point-max)))))
+      (save-excursion
+        (insert " ")
+        (company-template-add-field tpl (point) "bar"))
+      (company-call 'template-move-to-first tpl)
+      (should (= 3 (point)))
+      (dolist (c (string-to-list "tee"))
+        (let ((last-command-event c))
+          (company-call 'self-insert-command 1)))
+      (should (string= "{ tee }" (buffer-string)))
+      (should (overlay-buffer tpl))
+      (company-call 'template-forward-field)
+      (should (= 7 (point)))
+      (should (null (overlay-buffer tpl))))))
+
+(ert-deftest company-template-c-like-templatify ()
+  (with-temp-buffer
+    (let ((text "foo(int a, short b)"))
+      (insert text)
+      (company-template-c-like-templatify text)
+      (should (equal "foo(arg0, arg1)" (buffer-string)))
+      (should (looking-at "arg0"))
+      (should (equal "int a"
+                     (overlay-get (company-template-field-at) 'display))))))
+
+(ert-deftest company-template-c-like-templatify-trims-after-closing-paren ()
+  (with-temp-buffer
+    (let ((text "foo(int a, short b)!@ #1334 a"))
+      (insert text)
+      (company-template-c-like-templatify text)
+      (should (equal "foo(arg0, arg1)" (buffer-string)))
+      (should (looking-at "arg0")))))
+
+(ert-deftest company-template-c-like-templatify-generics ()
+  (with-temp-buffer
+    (let ((text "foo<TKey, TValue>(int i, Dict<TKey, TValue>, long l)"))
+      (insert text)
+      (company-template-c-like-templatify text)
+      (should (equal "foo<arg0, arg1>(arg2, arg3, arg4)" (buffer-string)))
+      (should (looking-at "arg0"))
+      (should (equal "TKey" (overlay-get (company-template-field-at) 
'display)))
+      (search-forward "arg3")
+      (forward-char -1)
+      (should (equal "Dict<TKey, TValue>"
+                     (overlay-get (company-template-field-at) 'display))))))
diff --git a/packages/company/test/transformers-tests.el 
b/packages/company/test/transformers-tests.el
new file mode 100644
index 0000000..4d027e5
--- /dev/null
+++ b/packages/company/test/transformers-tests.el
@@ -0,0 +1,58 @@
+;;; transformers-tests.el --- company-mode tests  -*- lexical-binding: t -*-
+
+;; Copyright (C) 2015  Free Software Foundation, Inc.
+
+;; Author: Dmitry Gutov
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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.
+
+;; GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+(require 'company-tests)
+
+(ert-deftest company-occurrence-prefer-closest-above ()
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert "foo0
+foo1
+")
+      (save-excursion
+        (insert "
+foo3
+foo2"))
+      (let ((company-backend 'company-dabbrev)
+            (company-occurrence-weight-function
+             'company-occurrence-prefer-closest-above))
+        (should (equal '("foo1" "foo0" "foo3" "foo2" "foo4")
+                       (company-sort-by-occurrence
+                        '("foo0" "foo1" "foo2" "foo3" "foo4"))))))))
+
+(ert-deftest company-occurrence-prefer-any-closest ()
+  (with-temp-buffer
+    (save-window-excursion
+      (set-window-buffer nil (current-buffer))
+      (insert "foo0
+foo1
+")
+      (save-excursion
+        (insert "
+foo3
+foo2"))
+      (let ((company-backend 'company-dabbrev)
+            (company-occurrence-weight-function
+             'company-occurrence-prefer-any-closest))
+        (should (equal '("foo1" "foo3" "foo0" "foo2" "foo4")
+                       (company-sort-by-occurrence
+                        '("foo0" "foo1" "foo2" "foo3" "foo4"))))))))



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