File: anything-match-plugin.el

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;;; anything-match-plugin.el --- Humane match plug-in for anything
;; $Id: anything-match-plugin.el,v 1.27 2010-03-24 11:11:28 rubikitch Exp $

;; Copyright (C) 2008  rubikitch

;; Author: rubikitch <rubikitch@ruby-lang.org>
;; Keywords: anything, matching
;; URL: http://www.emacswiki.org/cgi-bin/wiki/download/anything-match-plugin.el

;; This file 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 2, or (at your option)
;; any later version.

;; This file 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; see the file COPYING.  If not, write to
;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.

;;; Commentary:

;; Change anything.el matching algorithm humanely.
;; It gives anything.el search refinement functionality.
;; exact match -> prefix match -> multiple regexp match

;;; Commands:
;;
;; Below are complete command list:
;;
;;
;;; Customizable Options:
;;
;; Below are customizable option list:
;;
;;  `anything-grep-candidates-fast-directory-regexp'
;;    *Directory regexp where a RAM disk (or tmpfs) is mounted.
;;    default = nil

;; A query of multiple regexp match is space-delimited string.
;; Anything displays candidates which matches all the regexps.
;; A regexp with "!" prefix means not matching the regexp.
;; To include spaces to a regexp, prefix "\" before space,
;; it is controlled by `anything-mp-space-regexp' variable.

;; If multiple regexps are specified, first one also tries to match the source name.
;; If you want to disable this feature, evaluate
;;   (setq anything-mp-match-source-name nil) .

;; This file highlights patterns like `occur'. Note that patterns
;; longer than `anything-mp-highlight-threshold' are highlighted. And
;; region out of screen is highlighted after
;; `anything-mp-highlight-delay' seconds.
;;
;; Highlight in Emacs is time-consuming process for slow computers. To
;; disable it is to set nil to `anything-mp-highlight-delay'.

;; Just require it to use.

;;; History:

;; $Log: anything-match-plugin.el,v $
;; Revision 1.27  2010-03-24 11:11:28  rubikitch
;; Added :group keyword to `defface anything-match'
;;
;; Revision 1.26  2010/03/24 10:48:55  rubikitch
;; grep-candidates plug-in: document / imply `delayed' attribute
;;
;; Revision 1.25  2010/03/24 10:38:48  rubikitch
;; grep-candidates plugin: grep-candidates attribute can also accept variable/function name.
;;
;; Revision 1.24  2010/03/22 09:01:22  rubikitch
;; grep-candidates plugin released
;;
;; Revision 1.23  2010/03/22 08:02:11  rubikitch
;; grep-candidates plugin prototype
;;
;; Revision 1.22  2009/03/03 10:21:45  rubikitch
;; * Remove highlight.el dependency.
;; * Very faster highlight.
;;
;; Revision 1.21  2009/03/03 08:51:23  rubikitch
;; New variable: `anything-mp-highlight-threshold'
;;
;; Revision 1.20  2009/03/03 07:29:24  rubikitch
;; Highlight matches!
;;
;; Revision 1.19  2008/09/08 06:58:59  rubikitch
;; changed default `anything-mp-space-regexp' to "[\\ ] "
;;
;; Revision 1.18  2008/09/07 12:09:01  rubikitch
;; *** empty log message ***
;;
;; Revision 1.17  2008/09/07 07:48:12  rubikitch
;; Append commentary.
;; Multiple regexp match with regexp negation.
;;
;; Revision 1.16  2008/09/07 06:58:11  rubikitch
;; Added mp-3p match: permutation with prefix match
;;
;; Revision 1.15  2008/09/07 05:23:07  rubikitch
;; New variable: `anything-mp-space-regexp'
;;
;; Revision 1.14  2008/09/03 03:33:09  rubikitch
;; anything-exact-*, anything-prefix-*: memoize
;;
;; Revision 1.13  2008/09/02 10:56:50  rubikitch
;; anything-mp-3-*: MUCH MUCH FASTER
;;   changed algorithm
;;
;; Revision 1.12  2008/09/01 13:41:57  rubikitch
;; search functions for search-from-end
;;
;; Revision 1.11  2008/08/24 20:40:27  rubikitch
;; prevent the unit test from being byte-compiled.
;;
;; Revision 1.10  2008/08/24 17:48:53  rubikitch
;; Add commentary
;;
;; Revision 1.9  2008/08/24 08:23:16  rubikitch
;; Rename `anything-candidates-buffer' -> `anything-candidate-buffer'
;;
;; Revision 1.8  2008/08/22 21:25:44  rubikitch
;; *** empty log message ***
;;
;; Revision 1.7  2008/08/22 21:17:58  rubikitch
;; exact, prefix match: faster
;;
;; Revision 1.6  2008/08/22 19:40:22  rubikitch
;; exact -> prefix -> mp-3 by default because of speed
;;
;; Revision 1.5  2008/08/22 19:04:53  rubikitch
;; reimplemented
;;
;; Revision 1.4  2008/08/20 00:10:15  rubikitch
;; *** empty log message ***
;;
;; Revision 1.3  2008/08/19 23:30:39  rubikitch
;; exact match support
;;
;; Revision 1.2  2008/08/19 23:02:29  rubikitch
;; candidates-in-buffer hack
;;
;; Revision 1.1  2008/08/19 19:45:11  rubikitch
;; Initial revision
;;

;;; Code:

(require 'anything)
(require 'cl)

(let ((version "1.283"))
  (when (and (string= "1." (substring version 0 2))
             (string-match "1\.\\([0-9]+\\)" anything-version)
             (< (string-to-number (match-string 1 anything-version))
                (string-to-number (substring version 2))))
    (error "Please update anything.el!!

http://www.emacswiki.org/cgi-bin/wiki/download/anything.el

or  M-x install-elisp-from-emacswiki anything.el")))

(defcustom anything-grep-candidates-fast-directory-regexp nil
  "*Directory regexp where a RAM disk (or tmpfs) is mounted.

If non-nil, grep-candidates plugin gets faster because it uses
grep as synchronous process.

ex. (setq anything-grep-candidates-fast-directory-regexp \"^/tmp/\")"
  :type 'string
  :group 'anything)

;;;; multiple patterns
(defvar anything-use-multiple-patterns t
  "If non-nil, enable anything-use-multiple-patterns.")
(defvar anything-mp-space-regexp "[\\ ] "
  "Regexp to represent space itself in multiple regexp match.")
(defvar anything-mp-match-source-name t
  "If non-nil, first query in space-delimited pattern try to match the source name.
It needs at least two queries.
For example, to list candidats of \"foo\" source, input pattern as \"foo .\".")

(defun amp-mp-make-regexps (pattern)
  (if (string= pattern "") '("")
    (loop for s in (split-string
                    (replace-regexp-in-string anything-mp-space-regexp
                                              "\000\000" pattern) " " t)
        collect (replace-regexp-in-string "\000\000" " " s))))

(defun amp-mp-1-make-regexp (pattern)
  (mapconcat 'identity (amp-mp-make-regexps pattern) ".*"))

(defmacro amp-define-memoizer (prefix pattern-expr)
  (let ((pattern-str (intern (concat prefix "pattern-str")))
        (pattern-real (intern (concat prefix "pattern-real")))
        (get-pattern (intern (concat prefix "get-pattern"))))
    `(progn
       (defvar ,pattern-str nil)
       (defvar ,pattern-real nil)
       (defsubst ,get-pattern (pattern)
         (unless (equal pattern ,pattern-str)
           (setq ,pattern-str pattern
                 ,pattern-real ,pattern-expr))
         ,pattern-real))))

(defmacro amp-define (prefix pattern-expr)
  (let ((get-pattern (intern (concat prefix "get-pattern"))) 
        (match (intern (concat prefix "match")))
        (search (intern (concat prefix "search")))
        (search-backward (intern (concat prefix "search-backward"))))
    `(progn
       (amp-define-memoizer ,prefix ,pattern-expr)
       (defun* ,match (str &optional (pattern anything-pattern))
         (string-match (,get-pattern pattern) str))
       (defun ,search (pattern &rest ignore)
         (re-search-forward (,get-pattern pattern) nil t))
       (defun ,search-backward (pattern &rest ignore)
         (re-search-backward (,get-pattern pattern) nil t)))))
  
;; exact match
;(amp-define "anything-exact-" (concat (anything-prefix-get-pattern pattern) "$"))
(amp-define-memoizer "anything-exact-" (concat "\n" pattern "\n"))
(defun anything-exact-match (str &optional pattern)
  (string= str (or pattern anything-pattern)))
(defun anything-exact-search (pattern &rest ignore)
  (and (search-forward (anything-exact-get-pattern pattern) nil t)
       (forward-line -1)))
(defun anything-exact-search-backward (pattern &rest ignore)
  (and (search-backward (anything-exact-get-pattern pattern) nil t)
       (forward-line 1)))
;; prefix match
;;(amp-define "anything-prefix-" (concat "^" (regexp-quote pattern)))
(amp-define-memoizer "anything-prefix-" (concat "\n" pattern))
(defun anything-prefix-match (str &optional pattern)
  (setq pattern (or pattern anything-pattern))
  (let ((len (length pattern)))
    (and (<= len (length str))
         (string= (substring str 0 len) pattern ))))
(defun anything-prefix-search (pattern &rest ignore)
  (search-forward (anything-prefix-get-pattern pattern) nil t))
(defun anything-prefix-search-backward (pattern &rest ignore)
  (and (search-backward (anything-prefix-get-pattern pattern) nil t)
       (forward-line 1)))
;; multiple regexp patterns 1 (order is preserved / prefix)
(amp-define "anything-mp-1-" (concat "^" (amp-mp-1-make-regexp pattern)))
;; multiple regexp patterns 2 (order is preserved / partial)
(amp-define "anything-mp-2-" (concat "^.+" (amp-mp-1-make-regexp pattern)))

;;;; multiple regexp patterns 3 (permutation)
(defvar anything-mp-3-pattern-str nil)
(defvar anything-mp-3-pattern-list nil)
(defsubst anything-mp-3-get-patterns (pattern)
  (unless (equal pattern anything-mp-3-pattern-str)
    (setq anything-mp-3-pattern-str pattern
          anything-mp-3-pattern-list
          (anything-mp-3-get-patterns-internal pattern)))
  anything-mp-3-pattern-list)
(defun anything-mp-3-get-patterns-internal (pattern)
  (loop for pat in (amp-mp-make-regexps pattern)
        collect (if (string= "!" (substring pat 0 1))
                            (cons 'not (substring pat 1))
                          (cons 'identity pat))))
(defun anything-mp-handle-source-name-maybe (pattern self else)
  (when (stringp pattern)
    (setq pattern (anything-mp-3-get-patterns pattern)))
  ;; PATTERN is list of (pred . re) now.
  (when pattern
    (destructuring-bind ((first-pred . first-re) . rest) pattern
      (if (and anything-mp-match-source-name
               (stringp anything-source-name)
               (eq 'identity first-pred))
          (let (anything-mp-match-source-name)
            (or (and (string-match first-re anything-source-name)
                     (funcall self rest))
                (funcall self pattern)))
        (funcall else)))))

(defun* anything-mp-3-match (str &optional (pattern anything-pattern))
  (anything-mp-handle-source-name-maybe
   pattern (apply-partially 'anything-mp-3-match str)
   (lambda ()
     (loop for (pred . re) in pattern
           always (funcall pred (string-match re str))))))

(defmacro anything-mp-3-search-base (searchfn1 searchfn2 b e)
  `(loop with pat = (if (stringp pattern)
                        (anything-mp-3-get-patterns pattern)
                      pattern)
         while (,searchfn1 (or (cdar pat) "") nil t)
         for bol = (point-at-bol)
         for eol = (point-at-eol)
         if (loop 
             for (pred . s) in (cdr pat)
             always (progn (goto-char ,b)
                           (funcall pred (,searchfn2 s ,e t))))
         do (goto-char ,e) (return t)
         else do
         (goto-char ,e)
         finally (return nil)))

(defun anything-mp-3-search (pattern &rest ignore)
  (anything-mp-handle-source-name-maybe
   pattern 'anything-mp-3-search
   (lambda () (anything-mp-3-search-base
               re-search-forward re-search-forward bol eol))))
(defun anything-mp-3-search-backward (pattern &rest ignore)
  (anything-mp-handle-source-name-maybe
   pattern 'anything-mp-3-search-backward
   (lambda () (anything-mp-3-search-base
               re-search-backward re-search-backward eol bol))))
;; mp-3p- (multiple regexp pattern 3 with prefix search)
(defun* anything-mp-3p-match (str &optional (pattern anything-pattern))
  (anything-mp-handle-source-name-maybe
   pattern (apply-partially 'anything-mp-3p-match str)
   (lambda ()
     (declare (special first-pred first-re))
     (and (funcall first-pred (anything-prefix-match str first-re))
          (loop for (pred . re) in rest
                always (funcall pred (string-match re str)))))))

(defun anything-mp-3p-search (pattern &rest ignore)
  (anything-mp-handle-source-name-maybe
   pattern 'anything-mp-3p-search
   (lambda () (anything-mp-3-search-base
               anything-prefix-search re-search-forward bol eol))))

(defun anything-mp-3p-search-backward (pattern &rest ignore)
  (anything-mp-handle-source-name-maybe
   pattern 'anything-mp-3p-search-backward
   (lambda () (anything-mp-3-search-base
               anything-prefix-search-backward re-search-backward eol bol))))

;;;; Highlight matches
(defface anything-match
  '((t (:inherit match)))
  "Face used to highlight matches."
  :group 'anything)

(defvar anything-mp-highlight-delay 0.7
  "Highlight matches with `anything-match' face after this many seconds.
 If nil, no highlight. ")

(defvar anything-mp-highlight-threshold 2
  "Minimum length of pattern to highlight.
The smaller  this value is, the slower highlight is.")

(defun anything-mp-highlight-match ()
  "Highlight matches after `anything-mp-highlight-delay' seconds."
  (when (and anything-mp-highlight-delay
             (not (string= anything-pattern "")))
    (anything-mp-highlight-match-internal (window-end (anything-window)))
    (run-with-idle-timer anything-mp-highlight-delay nil
                         'anything-mp-highlight-match-internal
                         (with-current-buffer anything-buffer (point-max)))))
(add-hook 'anything-update-hook 'anything-mp-highlight-match)

(defun anything-mp-highlight-region (start end regexp face)
  (save-excursion
    (goto-char start)
    (let (me)
      (while (and (setq me (re-search-forward regexp nil t))
                  (< (point) end)
                  (< 0 (- (match-end 0) (match-beginning 0))))
        (put-text-property (match-beginning 0) me 'face face)))))

(defun* anything-mp-highlight-match-internal (end)
  (when (anything-window)
    (set-buffer anything-buffer)
    (let ((requote (regexp-quote anything-pattern)))
      (when (>= (length requote) anything-mp-highlight-threshold)
        (anything-mp-highlight-region (point-min) end
                                    requote 'anything-match)))
    (loop for (pred . re) in (anything-mp-3-get-patterns anything-pattern)
          when (and (eq pred 'identity)
                    (>= (length re) anything-mp-highlight-threshold))
          do
          (anything-mp-highlight-region (point-min) end re 'anything-match))))
                         
;;;; source compier
(defvar anything-mp-default-match-functions
  '(anything-exact-match anything-mp-3p-match anything-mp-3-match))
(defvar anything-mp-default-search-functions
  '(anything-exact-search anything-mp-3p-search anything-mp-3-search))
(defvar anything-mp-default-search-backward-functions
  '(anything-exact-search-backward anything-mp-3p-search-backward
                                   anything-mp-3-search-backward))
(defun anything-compile-source--match-plugin (source)
  (let ((searchers (if (assoc 'search-from-end source)
                       anything-mp-default-search-backward-functions
                     anything-mp-default-search-functions)))
    `(,(if (or (assoc 'candidates-in-buffer source)
               (equal '(identity) (assoc-default 'match source)))
           '(match identity)
         `(match ,@anything-mp-default-match-functions
                 ,@(assoc-default 'match source)))
      (search ,@searchers
              ,@(assoc-default 'search source))
      ,@source)))

(add-to-list 'anything-compile-source-functions 'anything-compile-source--match-plugin t)

;;;; grep-candidates plug-in
(defun agp-candidates (&optional filter)
  "Normal version of grep-candidates candidates function.
Grep is run by asynchronous process."
  (start-process-shell-command "anything-grep-candidates" nil
                               (agp-command-line-2 filter)))
(defun agp-candidates-synchronous-grep (&optional filter)
  "Faster version of grep-candidates candidates function.
Grep is run by synchronous process.
It is faster when candidate files are in ramdisk."
  (split-string (shell-command-to-string (agp-command-line-2 filter)) "\n"))
(defun agp-candidates-synchronous-grep--direct-insert-match (&optional filter)
  "[EXPERIMENTAL]Fastest version of grep-candidates candidates function at the cost of absense of transformers.
Grep is run by synchronous process.
It is faster when candidate files are in ramdisk.

If (direct-insert-match) is in the source, this function is used."
  (with-current-buffer (anything-candidate-buffer 'global)
    (call-process-shell-command (agp-command-line-2 filter) nil t)))

(defun agp-command-line (query files &optional limit filter)
  "Build command line used by grep-candidates from QUERY, FILES, LIMIT, and FILTER."
  (with-temp-buffer
    (if (string= query "")
        (insert "cat "
                (mapconcat
                 (lambda (f) (shell-quote-argument (expand-file-name f)))
                 files " "))
      (loop for (flag . re) in (anything-mp-3-get-patterns-internal query)
            for i from 0
            do
            (setq re (replace-regexp-in-string "^-" "\\-" re))
            (unless (zerop i) (insert " | ")) 
            (insert "grep -ih "
                    (if (eq flag 'identity) "" "-v ")
                    (shell-quote-argument re))
            (when (zerop i)
              (insert " "
                      (mapconcat (lambda (f) (shell-quote-argument
                                              (expand-file-name f)))
                                 files " ")))))
    (when limit (insert (format " | head -n %d" limit)))
    (when filter (insert " | " filter))
    (buffer-string)))
(defun agp-command-line-2 (filter)
  "Build command line used by grep-candidates from FILTER and current source."
  (agp-command-line
   anything-pattern
   (anything-mklist (anything-interpret-value (anything-attr 'grep-candidates)))
   (anything-candidate-number-limit (anything-get-current-source))
   filter))
(defun anything-compile-source--grep-candidates (source)
  (anything-aif (assoc-default 'grep-candidates source)
      (append
       source
       (let ((use-fast-directory
              (and anything-grep-candidates-fast-directory-regexp
                   (string-match
                    anything-grep-candidates-fast-directory-regexp
                    (or (car (anything-mklist (anything-interpret-value it))) "")))))
         (cond ((not (anything-interpret-value it)) nil)
               ((and use-fast-directory (assq 'direct-insert-match source))
                (anything-log "fastest version (use-fast-directory and direct-insert-match)")
                `((candidates . agp-candidates-synchronous-grep--direct-insert-match)
                  (match identity)
                  (volatile)
                  (requires-pattern)))
               (use-fast-directory
                (anything-log "faster version (use-fast-directory)")
                `((candidates . agp-candidates-synchronous-grep)
                  (match identity)
                  (volatile)
                  (requires-pattern)))
               (t
                (anything-log "normal version")
                '((candidates . agp-candidates)
                  (delayed))))))
    source))
(add-to-list 'anything-compile-source-functions 'anything-compile-source--grep-candidates)

(anything-document-attribute 'grep-candidates "grep-candidates plug-in"
  "grep-candidates plug-in provides anything-match-plugin.el feature with grep and head program.
It is MUCH FASTER than normal match-plugin to search from vary large (> 1MB) candidates.
Make sure to install these programs.

It expands `candidates' and `delayed' attributes.

`grep-candidates' attribute accepts a filename or list of filename.
It also accepts 0-argument function name or variable name.")

;; (anything '(((name . "grep-test")  (grep-candidates . "~/.emacs.el") (action . message))))
;; (let ((a "~/.emacs.el")) (anything '(((name . "grep-test")  (grep-candidates . a) (action . message) (delayed)))))
;; (let ((a "~/.emacs.el")) (anything '(((name . "grep-test")  (grep-candidates . (lambda () a)) (action . message) (delayed)))))
;; (anything '(((name . "grep-test")  (grep-candidates . "~/.emacs.el") (action . message) (delayed) (candidate-number-limit . 2))))
;; (let ((anything-candidate-number-limit 2)) (anything '(((name . "grep-test")  (grep-candidates . "~/.emacs.el") (action . message) (delayed)))))

;;;; Compatibility
(unless (fboundp 'apply-partially)
  (defun apply-partially (fun &rest args)
    "Return a function that is a partial application of FUN to ARGS.
ARGS is a list of the first N arguments to pass to FUN.
The result is a new function which does the same as FUN, except that
the first N arguments are fixed at the values with which this function
was called."
    (lexical-let ((fun fun) (args1 args))
      (lambda (&rest args2) (apply fun (append args1 args2))))))

;;;; unit test
;; (install-elisp "http://www.emacswiki.org/cgi-bin/wiki/download/el-expectations.el")
;; (install-elisp "http://www.emacswiki.org/cgi-bin/wiki/download/el-mock.el")
(dont-compile
  (when (fboundp 'expectations)
    (expectations
      (desc "amp-mp-make-regexps")
      (expect '("")
        (amp-mp-make-regexps ""))
      (expect '("foo" "bar")
        (amp-mp-make-regexps "foo bar"))
      (expect '("foo" "bar")
        (amp-mp-make-regexps " foo bar"))
      (expect '("foo" "bar")
        (amp-mp-make-regexps " foo bar "))
      (expect '("foo bar" "baz")
        (let ((anything-mp-space-regexp "\\\\ "))
          (amp-mp-make-regexps "foo\\ bar baz")))
      (desc "anything-mp-3-get-patterns-internal")
      (expect '((identity . "foo"))
        (anything-mp-3-get-patterns-internal "foo"))
      (expect '((identity . "foo") (identity . "bar"))
        (anything-mp-3-get-patterns-internal "foo bar"))
      (expect '((identity . "foo") (not . "bar"))
        (anything-mp-3-get-patterns-internal "foo !bar"))
      (desc "agp-command-line")
      (expect "grep -ih foo /f1"
        (agp-command-line "foo" '("/f1")))
      (expect "grep -ih foo /f1 | grep -ih bar"
        (agp-command-line "foo bar" '("/f1")))
      (expect "grep -ih foo /f1 | grep -ih -v bar"
        (agp-command-line "foo !bar" '("/f1")))
      (expect "grep -ih foo /f1 /f\\ 2 | grep -ih -v bar | grep -ih baz"
        (agp-command-line "foo !bar baz" '("/f1" "/f 2")))
      (expect (concat "grep -ih foo " (expand-file-name "~/.emacs.el"))
        (agp-command-line "foo" '("~/.emacs.el")))
      (expect "grep -ih f\\ o /f\\ 1"
        (agp-command-line "f  o" '("/f 1")))
      (expect "grep -ih foo /f1 | head -n 5"
        (agp-command-line "foo" '("/f1") 5))
      (expect "grep -ih foo /f1 | head -n 5 | nkf -w"
        (agp-command-line "foo" '("/f1") 5 "nkf -w"))
      (desc "anything-exact-match")
      (expect (non-nil)
        (anything-exact-match "thunder" "thunder"))
      (expect nil
        (anything-exact-match "thunder" "fire"))
      (desc "anything-exact-search")
      (expect (non-nil)
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char 1)
          (anything-exact-search "thunder" nil t)))
      (expect (non-nil)
        (with-temp-buffer
          (insert "\nfire\nthunder\n")
          (goto-char 1)
          (anything-exact-search "fire" nil t)))
      (desc "anything-prefix-search")
      (expect (non-nil)
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char (point-min))
          (anything-prefix-search "thund" nil t)))
      (expect nil
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char (point-min))
          (anything-prefix-search "hund" nil t)))
      (desc "anything-prefix-search-backward")
      (expect (non-nil)
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char (point-max))
          (anything-prefix-search-backward "thund" nil t)))
      (expect nil
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char (point-max))
          (anything-prefix-search-backward "hund" nil t)))
      (desc "amp-mp-1-make-regexp")
      (expect "a.*b"
        (amp-mp-1-make-regexp "a b"))
      (expect "a b"
        (let ((anything-mp-space-regexp "\\\\ "))
          (amp-mp-1-make-regexp "a\\ b")))
      (expect "a.*b c"
        (let ((anything-mp-space-regexp "\\\\ "))
          (amp-mp-1-make-regexp "a b\\ c")))
      (expect ""
        (amp-mp-1-make-regexp ""))
      (desc "anything-mp-1-search")
      (expect (non-nil)
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char 1)
          (anything-mp-1-search "th+ r" nil t)))
      (desc "anything-mp-2-search")
      (expect (non-nil)
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char 1)
          (anything-mp-2-search "h+ r" nil t)))
      (expect nil
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char 1)
          (anything-mp-2-search "th+ r" nil t)))
      (desc "anything-mp-3-search")
      (expect (non-nil)
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char 1)
          (anything-mp-3-search "h+ r" nil t)))
      (expect (non-nil)
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char 1)
          (anything-mp-3-search "th+ r" nil t)))
      (expect (non-nil)
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char 1)
          (anything-mp-3-search "r th+" nil t)))
      (expect nil
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char 1)
          (anything-mp-3-search "under hue" nil t)))
      (expect (non-nil)
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char 1)
          (anything-mp-3-search "r th+ n" nil t)))
      (desc "anything-mp-3-search")
      (expect (non-nil)
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char 1)
          (anything-mp-3-search "th der" nil t)))
      (expect nil
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char 1)
          (anything-mp-3-search "th ders" nil t)))
      (desc "anything-mp-3-search not")
      (expect t
        (with-temp-buffer
          (insert "threshold\nthunder\n")
          (goto-char 1)
          (anything-mp-3-search "h !der" nil t)))
      (expect t
        (with-temp-buffer
          (insert "threshold\nthunder\n")
          (goto-char 1)
          (anything-mp-3-search "th !der" nil t)))
      (desc "anything-mp-3p-search")
      (expect (non-nil)
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char 1)
          (anything-mp-3p-search "th der" nil t)))
      (expect nil
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char 1)
          (anything-mp-3p-search "h ders" nil t)))
      (desc "anything-mp-3p-search not")
      (expect t
        (with-temp-buffer
          (insert "\nthreshold\nthunder\n")
          (goto-char 1)
          (anything-mp-3p-search "th !der" nil t)))
      (expect nil
        (with-temp-buffer
          (insert "threshold\nthunder\n")
          (goto-char 1)
          (anything-mp-3p-search "h !der" nil t)))
      (desc "anything-mp-3-search-backward")
      (expect (non-nil)
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char (point-max))
          (anything-mp-3-search-backward "h der" nil t)))
      (expect nil
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char (point-max))
          (anything-mp-3-search-backward "th ders" nil t)))
      (desc "anything-mp-3-search-backward not")
      (expect t
        (with-temp-buffer
          (insert "threshold\nthunder\n")
          (goto-char (point-max))
          (anything-mp-3-search-backward "h !der" nil t)))
      (expect t
        (with-temp-buffer
          (insert "threshold\nthunder\n")
          (goto-char (point-max))
          (anything-mp-3-search-backward "th !der" nil t)))
      (desc "anything-mp-3p-search-backward")
      (expect (non-nil)
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char (point-max))
          (anything-mp-3p-search-backward "th der" nil t)))
      (expect nil
        (with-temp-buffer
          (insert "fire\nthunder\n")
          (goto-char (point-max))
          (anything-mp-3p-search-backward "h der" nil t)))
      (desc "anything-mp-3p-search-backward not")
      (expect t
        (with-temp-buffer
          (insert "\nthreshold\nthunder\n")
          (goto-char (point-max))
          (anything-mp-3p-search-backward "th !der" nil t)))
      (expect nil
        (with-temp-buffer
          (insert "threshold\nthunder\n")
          (goto-char (point-max))
          (anything-mp-3p-search-backward "h !der" nil t)))
      (desc "anything-mp-1-match")
      (expect (non-nil)
        (anything-mp-1-match "thunder" "th+ r"))
      (desc "anything-mp-2-match")
      (expect (non-nil)
        (anything-mp-2-match "thunder" "h+ r"))
      (expect nil
        (anything-mp-2-match "thunder" "th+ r"))
      (desc "anything-mp-3-match")
      (expect (non-nil)
        (anything-mp-3-match "thunder" "h+ r"))
      (expect (non-nil)
        (anything-mp-3-match "thunder" "th+ r"))
      (expect (non-nil)
        (anything-mp-3-match "thunder" "r th+"))
      (expect nil
        (anything-mp-3-match "thunder" "under hue"))
      (expect (non-nil)
        (anything-mp-3-match "thunder" "r th+ n"))
      (desc "anything-mp-3-match not")
      (expect (non-nil)
        (anything-mp-3-match "threshold" "th !der"))
      (desc "anything-prefix-match")
      (expect (non-nil)
        (anything-prefix-match "fobar" "fo"))
      (expect nil
        (anything-prefix-match "xfobar" "fo"))

      (desc "anything-mp-3-match")
      (expect (non-nil)
        (anything-mp-3-match "thunder" "h der"))
      (expect nil
        (anything-mp-3-match "thunder" "h ders"))
      (desc "anything-mp-3p-match")
      (expect (non-nil)
        (anything-mp-3p-match "thunder" "th der"))
      (expect nil
        (anything-mp-3p-match "thunder" "h der"))
      (desc "anything-mp-3p-match not")
      (expect (non-nil)
        (anything-mp-3p-match "threshold" "th !der"))
      (expect nil
        (anything-mp-3p-match "threshold" "h !der"))
      (desc "with identity match")
      (expect '(identity)
        (assoc-default 'match
                       (car (anything-compile-sources
                             '(((name . "FOO")
                                (candidates-in-buffer)))
                             '(anything-compile-source--candidates-in-buffer
                               anything-compile-source--match-plugin)))))
      (expect '(identity)
        (assoc-default 'match
                       (car (anything-compile-sources
                             '(((name . "FOO")
                                (match identity)))
                             '(anything-compile-source--match-plugin)))))
      (desc "functional")
      (expect '(("FOO" ("thunder")))
        (anything-test-candidates '(((name . "FOO")
                                     (candidates "fire" "thunder")))
                                  "th r"
                                  '(anything-compile-source--match-plugin)))
      (expect '(("FOO" ("one two")))
        (let ((anything-mp-space-regexp "\\\\ "))
          (anything-test-candidates '(((name . "FOO")
                                       (candidates "one two" "three four")))
                                    "e\\ t"
                                    '(anything-compile-source--match-plugin))))
      (expect '(("FOO" ("one two")))
        (let ((anything-mp-space-regexp "  "))
          (anything-test-candidates '(((name . "FOO")
                                       (candidates "one two" "three four")))
                                    "e  t"
                                    '(anything-compile-source--match-plugin))))
      (expect '(("FOO" ("thunder")))
        (anything-test-candidates '(((name . "FOO")
                                     (init
                                      . (lambda ()
                                          (with-current-buffer (anything-candidate-buffer 'global)
                                            (insert "fire\nthunder\nthanks\n"))))
                                     (candidates-in-buffer)))
                                  "th r"
                                  '(anything-compile-source--candidates-in-buffer
                                    anything-compile-source--match-plugin)))
      (expect '(("FOO" ("foo" "foobar")))
        (anything-test-candidates '(((name . "FOO")
                                     (candidates "foobar" "foo")))
                                  "foo"
                                  '(anything-compile-source--match-plugin)))
      (expect '(("FOO" ("foo" "foobar")))
        (anything-test-candidates '(((name . "FOO")
                                     (init
                                      . (lambda ()
                                          (with-current-buffer (anything-candidate-buffer 'global)
                                            (insert "foobar\nfoo\n"))))
                                     (candidates-in-buffer)))
                                  "foo"
                                  '(anything-compile-source--candidates-in-buffer
                                    anything-compile-source--match-plugin)))
      (expect '(("FOO" ("foo")))
        (anything-test-candidates '(((name . "FOO")
                                     (init
                                      . (lambda ()
                                          (with-current-buffer (anything-candidate-buffer 'global)
                                            (insert "foo\n"))))
                                     (candidates-in-buffer)))
                                  "foo"
                                  '(anything-compile-source--candidates-in-buffer
                                    anything-compile-source--match-plugin)))
      (expect '(("FOO" ("foo")))
        (anything-test-candidates '(((name . "FOO")
                                     (init
                                      . (lambda ()
                                          (with-current-buffer (anything-candidate-buffer 'global)
                                            (insert "bar\nfoo\ntest\n"))))
                                     (candidates-in-buffer)))
                                  "foo"
                                  '(anything-compile-source--candidates-in-buffer
                                    anything-compile-source--match-plugin)))
      (expect '(("FOO" ("foobar" "foo")))
        (anything-test-candidates '(((name . "FOO")
                                     (init
                                      . (lambda ()
                                          (with-current-buffer (anything-candidate-buffer 'global)
                                            (insert "foobar\nfoo\n"))))
                                     (candidates-in-buffer)))
                                  ""
                                  '(anything-compile-source--candidates-in-buffer
                                    anything-compile-source--match-plugin)))
      (expect '(("FOO" ("foo" "foobar")))
        (anything-test-candidates '(((name . "FOO")
                                     (init
                                      . (lambda ()
                                          (with-current-buffer (anything-candidate-buffer 'global)
                                            (insert "foobar\nfoo\n"))))
                                     (candidates-in-buffer)
                                     (search-from-end)))
                                  "foo"
                                  '(anything-compile-source--candidates-in-buffer
                                    anything-compile-source--match-plugin)))
      (expect '(("FOO" ("elisp" "elp")))
        (anything-test-candidates '(((name . "FOO")
                                     (init
                                      . (lambda ()
                                          (with-current-buffer (anything-candidate-buffer 'global)
                                            (insert "elp\nelisp\n"))))
                                     (candidates-in-buffer)
                                     (search-from-end)))
                                  "el p"
                                  '(anything-compile-source--candidates-in-buffer
                                    anything-compile-source--match-plugin)))
      (expect '(("FOO" ("elisp" )))
        (anything-test-candidates '(((name . "FOO")
                                     (init
                                      . (lambda ()
                                          (with-current-buffer (anything-candidate-buffer 'global)
                                            (insert "elp\nelisp\n"))))
                                     (candidates-in-buffer)
                                     (search-from-end)))
                                  "el+ isp"
                                  '(anything-compile-source--candidates-in-buffer
                                    anything-compile-source--match-plugin)))
      ;; prefix multi -> multi
      (expect '(("FOO" ("elisp-info" "info.el")))
        (anything-test-candidates '(((name . "FOO")
                                     (init
                                      . (lambda ()
                                          (with-current-buffer (anything-candidate-buffer 'global)
                                            (insert "info.el\nelisp-info\n"))))
                                     (candidates-in-buffer)
                                     ))
                                  "el info"
                                  '(anything-compile-source--candidates-in-buffer
                                    anything-compile-source--match-plugin)))
      ;; multi not
      (expect '(("FOO" ("info.el")))
        (anything-test-candidates '(((name . "FOO")
                                     (init
                                      . (lambda ()
                                          (with-current-buffer (anything-candidate-buffer 'global)
                                            (insert "info.el\nelisp-info\n"))))
                                     (candidates-in-buffer)
                                     ))
                                  "info !elisp"
                                  '(anything-compile-source--candidates-in-buffer
                                    anything-compile-source--match-plugin)))
      ;; anything-mp-match-source-name
      (expect '(("SourceName" ("foo")))
        (let ((anything-mp-match-source-name t))
          (anything-test-candidates '(((name . "SourceName")
                                       (candidates "foo" "bar")))
                                    "source f"
                                    '(anything-compile-source--match-plugin))))
      (expect '(("SourceName cib" ("foo")))
        (let ((anything-mp-match-source-name t))
          (anything-test-candidates '(((name . "SourceName cib")
                                       (init
                                        . (lambda ()
                                            (with-current-buffer (anything-candidate-buffer 'global)
                                              (insert "foo\nbar\n"))))
                                       (candidates-in-buffer)))
                                    "source f"
                                    '(anything-compile-source--candidates-in-buffer
                                      anything-compile-source--match-plugin))))
      (expect '(("SourceName cib search-from-end" ("bar")))
        (let ((anything-mp-match-source-name t))
          (anything-test-candidates '(((name . "SourceName cib search-from-end")
                                       (init
                                        . (lambda ()
                                            (with-current-buffer (anything-candidate-buffer 'global)
                                              (insert "foo\nbar\n"))))
                                       (search-from-end)
                                       (candidates-in-buffer)))
                                    "source b"
                                    '(anything-compile-source--candidates-in-buffer
                                      anything-compile-source--match-plugin))))
      (expect '(("SourceName" ("foo" "bar")))
        (let ((anything-mp-match-source-name t))
          (anything-test-candidates '(((name . "SourceName")
                                       (candidates "foo" "bar")))
                                    "source ."
                                    '(anything-compile-source--match-plugin))))
      (expect '(("SourceName cib" ("foo" "bar")))
        (let ((anything-mp-match-source-name t))
          (anything-test-candidates '(((name . "SourceName cib")
                                       (init
                                        . (lambda ()
                                            (with-current-buffer (anything-candidate-buffer 'global)
                                              (insert "foo\nbar\n"))))
                                       (candidates-in-buffer)))
                                    "source ."
                                    '(anything-compile-source--candidates-in-buffer
                                      anything-compile-source--match-plugin))))
      (expect '(("SourceName cib search-from-end" ("bar" "foo")))
        (let ((anything-mp-match-source-name t))
          (anything-test-candidates '(((name . "SourceName cib search-from-end")
                                       (init
                                        . (lambda ()
                                            (with-current-buffer (anything-candidate-buffer 'global)
                                              (insert "foo\nbar\n"))))
                                       (search-from-end)
                                       (candidates-in-buffer)))
                                    "source ."
                                    '(anything-compile-source--candidates-in-buffer
                                      anything-compile-source--match-plugin))))
      )))
;; (anything-compile-sources '(((name . "test"))) anything-compile-source-functions)
(provide 'anything-match-plugin)

;; How to save (DO NOT REMOVE!!)
;; (progn (magit-push) (emacswiki-post "anything-match-plugin.el"))
;;; anything-match-plugin.el ends here