This file is indexed.

/usr/share/emacs/site-lisp/mew/mew-mule.el is in mew 1:6.7-4.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
;;; mew-mule.el --- Environment of Mule common for Mew

;; Author:  Kazu Yamamoto <Kazu@Mew.org>
;; Created: Jul 15, 1998

;;; Code:

;;
;; Charset
;;

(defun mew-charset-m17n ()
  (if (string= mew-charset-m17n mew-utf-8)
      (if mew-internal-utf-8p
	  mew-utf-8
	(if (condition-case nil (require 'un-define) (file-error nil))
	    mew-utf-8
	  mew-iso-2022-jp-2))
    mew-iso-2022-jp-2))

(defun mew-charset-guess-string (str)
  (let ((ecsdb (mew-ecsdb-guess-string str)))
    (if ecsdb
	(mew-cs-to-charset (mew-ecsdb-get-cs ecsdb)) ;; not hcs, take care
      (mew-charset-m17n))))

(defun mew-ecsdb-guess-string (str)
  (with-temp-buffer
    (insert str)
    (mew-ecsdb-guess-region (point-min) (point-max))))

(defun mew-charset-guess-region (beg end)
  "Guess charset for the region."
  (interactive "r")
  (let ((ecsdb (mew-ecsdb-guess-region beg end))
	ret)
    (if (null ecsdb)
	(setq ret (mew-charset-m17n))
      (setq ret (mew-cs-to-charset (mew-ecsdb-get-cs ecsdb)))) ;; not hcs
    (if (mew-called-interactively-p) (message "%s" ret)) ;; for debug
    ret))

(defun mew-ecsdb-guess-region (beg end)
  (let* ((tcsl (mew-find-cs-region beg end))
	 (N (length tcsl))
	 (alst mew-cs-database-for-encoding)
	 acsl csl ret)
    (dolist (ecsdb alst)
      (setq acsl (mew-ecsdb-get-lcs ecsdb))
      (catch 'loop
	(dotimes (i N)
	  (unless (member (nth i tcsl) acsl)
	    (setq ecsdb nil)
	    (setq acsl nil)
	    (throw 'loop nil))))
      (if (null ret)
	  (setq ret ecsdb)
	(if (and acsl (< (length acsl) (length csl)))
	    (setq ret ecsdb csl acsl))))
    ret))

(autoload 'mew-zenkaku-katakana-region "mew-lang-jp" nil)
(autoload 'mew-latin0-region "mew-lang-latin" nil)

(defun mew-charset-sanity-check (beg end)
  "Eliminate invalid characters"
  (interactive "r")
  (let ((lcs (mew-find-cs-region beg end)))
    (cond
     ((member mew-lc-kana lcs)
      (mew-zenkaku-katakana-region beg end))
     ((and (not (fboundp 'set-charset-priority))
	   (memq 'latin-iso8859-1 lcs) (memq 'latin-iso8859-15 lcs)) ;; xxx
      (mew-latin0-region beg end)))))

;;;
;;;
;;;

(defun mew-file-guess-coding-system (file)
  (with-temp-buffer
    (kill-local-variable 'find-file-literally)
    (set-buffer-multibyte t)
    (insert-file-contents file nil 0 1024)
    buffer-file-coding-system))

(defun mew-cs-strip-lineinfo (cs)
  (let ((str (symbol-name cs)))
    (if (string-match "-\\(unix\\|mac\\|dos\\)$" str)
	(intern (substring str 0 (match-beginning 0)))
      cs)))

;;;
;;;
;;;

(defun mew-coding-system-equal (cs1 cs2)
  ;; Emacs 22 causes an error if cs is not defined.
  (condition-case nil
      (coding-system-equal cs1 cs2)
    (error nil)))

(defun mew-cs-to-charset (cs)
  (let ((dcsdb (mew-assoc-equal cs mew-cs-database-for-decoding 1 'mew-coding-system-equal)))
    (if (null dcsdb)
	(mew-charset-m17n)
      (mew-dcsdb-get-charset dcsdb))))

(defun mew-charset-to-cs (charset)
  (when charset
    (let ((dcsdb (assoc (downcase charset) mew-cs-database-for-decoding)))
      (if (null dcsdb)
	  mew-cs-unknown
	(mew-dcsdb-get-cs dcsdb)))))

(defun mew-charset-to-ecsdb (charset)
  (mew-assoc-equal (mew-charset-to-cs charset) mew-cs-database-for-encoding 1))

(defun mew-charset-to-cte (charset)
  (mew-ecsdb-get-cte (mew-charset-to-ecsdb charset)))

(defun mew-charset-to-delsp (charset)
  (mew-ecsdb-get-delsp (mew-charset-to-ecsdb charset)))

;;

(defvar mew-charset-list
  (mapcar 'mew-dcsdb-get-charset mew-cs-database-for-decoding))

;;

(defun mew-cs-encode-arg (arg)
  (let ((cs (mew-ecsdb-cs-for-arg (mew-ecsdb-guess-string arg))))
    (if (mew-coding-system-p cs)
	(mew-cs-encode-string arg cs)
      arg)))

(provide 'mew-mule)

;;; Copyright Notice:

;; Copyright (C) 1998-2015 Mew developing team.
;; All rights reserved.

;; Redistribution and use in source and binary forms, with or without
;; modification, are permitted provided that the following conditions
;; are met:
;;
;; 1. Redistributions of source code must retain the above copyright
;;    notice, this list of conditions and the following disclaimer.
;; 2. Redistributions in binary form must reproduce the above copyright
;;    notice, this list of conditions and the following disclaimer in the
;;    documentation and/or other materials provided with the distribution.
;; 3. Neither the name of the team nor the names of its contributors
;;    may be used to endorse or promote products derived from this software
;;    without specific prior written permission.
;;
;; THIS SOFTWARE IS PROVIDED BY THE TEAM AND CONTRIBUTORS ``AS IS'' AND
;; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
;; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
;; PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE TEAM OR CONTRIBUTORS BE
;; LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
;; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
;; SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
;; BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
;; WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
;; OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
;; IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

;;; mew-mule.el ends here