/usr/share/emacs/site-lisp/mew/mew-mule3.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.
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;; Author: Kazu Yamamoto <Kazu@Mew.org>
;; Created: Mar 20, 1997
;;; Code:
(eval-when-compile
(mew-no-warning-defun charset-priority-list))
;; must be here
(if (fboundp 'find-coding-system)
(defun mew-coding-system-p (cs)
(if (null cs) t (find-coding-system cs)))
(defun mew-coding-system-p (cs)
(if (null cs) t (coding-system-p cs))))
;; In the context of Mew, 'charset' means MIME charset.
;; 'cs' means the internal representation of Emacs (was known as Mule).
;;
;; User CS definitions
;;
;; iso-2022-7bit-ss2 is iso-2022-jp-2
(define-coding-system-alias 'mew-cs-text 'raw-text)
(define-coding-system-alias 'mew-cs-text-lf 'raw-text-unix)
(define-coding-system-alias 'mew-cs-text-crlf 'raw-text-dos)
(define-coding-system-alias 'mew-cs-text-cr 'raw-text-mac)
(define-coding-system-alias 'mew-cs-text-net 'raw-text-dos)
(defun mew-cs-raw-p (cs)
(memq cs '(raw-text raw-text-unix raw-text-dos raw-text-mac)))
(defvar mew-cs-dummy 'binary)
(defvar mew-cs-binary 'binary)
(defvar mew-cs-text-for-read 'mew-cs-text)
(defvar mew-cs-text-for-write 'mew-cs-text-lf)
(defvar mew-cs-text-for-net 'mew-cs-text-net)
(defvar mew-cs-autoconv 'undecided)
;; xxx should be utf-8-unix someday.
(defvar mew-cs-m17n (if (mew-coding-system-p 'ctext-unix) 'ctext-unix 'ctext))
(defvar mew-cs-utf-16be
(cond
((mew-coding-system-p 'utf-16-be-no-signature) 'utf-16-be-no-signature)
((mew-coding-system-p 'utf-16be) 'utf-16be)
(t nil)))
(defvar mew-cs-eol "\n")
(defun mew-eol-fix-for-read () ())
(defun mew-eol-fix-for-write () ())
;; Latin 0 -- Nickname of Latin 9
;; Latin 1 -- ISO-8859-1 West European
;; Latin 2 -- ISO-8859-2 East European
;; Latin 3 -- ISO-8859-3 South European
;; Latin 4 -- ISO-8859-4 North European
;; Latin 5 -- ISO-8859-9 Turkish
;; Latin 6 -- ISO-8859-10 Nordic
;; Latin 7 -- ISO-8859-13 Baltic Rim
;; Latin 8 -- ISO-8859-14 Celtic
;; Latin 9 -- ISO-5589-15 New West European
;; ISO-8859-1 -- Latin 1 West European
;; ISO-8859-2 -- Latin 2 East European
;; ISO-8859-3 -- Latin 3 South European
;; ISO-8859-4 -- Latin 4 North European
;; ISO-8859-5 -- Cyrillic
;; ISO-8859-6 -- Arabic
;; ISO-8859-7 -- Greek
;; ISO-8859-8 -- Hebrew
;; ISO-8859-9 -- Latin 5 Turkish
;; ISO-8859-10 -- Latin 6 Nordic
;; ISO-8859-11 -- Thai
;; ISO-8859-12 --
;; ISO-8859-13 -- Latin 7 Baltic Rim
;; ISO-8859-14 -- Latin 8 Celtic
;; ISO-8859-15 -- Latin 9 New West European (or Latin 0)
(defvar mew-charset-utf-8-encoding "base64")
(defvar mew-charset-utf-8-header-encoding "B")
(mew-defstruct ecsdb lcs cs cte b-or-q delsp)
(defun mew-ecsdb-hcs (ecsdb)
(mew-ecsdb-get-cs ecsdb))
(defvar mew-cs-database-for-encoding
`(((ascii) nil "7bit" "7bit" nil)
;; West European (Latin 1)
((ascii latin-iso8859-1) iso-8859-1 "quoted-printable" "Q" nil)
;; East European (Latin 2)
((ascii latin-iso8859-2) iso-8859-2 "quoted-printable" "Q" nil)
;; South European (Latin 3)
((ascii latin-iso8859-3) iso-8859-3 "quoted-printable" "Q" nil)
;; North European (Latin 4)
((ascii latin-iso8859-4) iso-8859-4 "quoted-printable" "Q" nil)
;; Cyrillic
((ascii cyrillic-iso8859-5) koi8-r "quoted-printable" "Q" nil)
;; Arabic
((ascii arabic-iso8859-6) iso-8859-6 "base64" "B" t)
;; Greek
((ascii greek-iso8859-7) iso-8859-7 "base64" "B" t)
;; Hebrew
((ascii hebrew-iso8859-8) iso-8859-8 "base64" "B" t)
;; Turkish (Latin 5)
((ascii latin-iso8859-9) iso-8859-9 "quoted-printable" "Q" nil)
;; Celtic (Latin 8)
((ascii latin-iso8859-14) iso-8859-14 "quoted-printable" "Q" nil) ;; xxx
;; New West European (Latin 9 or Latin 0)
((ascii latin-iso8859-15) iso-8859-15 "quoted-printable" "Q" nil)
((ascii thai-tis620) tis-620 "base64" "B" t)
((ascii latin-jisx0201 japanese-jisx0208 japanese-jisx0208-1978)
iso-2022-jp "7bit" "B" t)
((ascii korean-ksc5601) euc-kr "8bit" "B" t)
((ascii chinese-gbk) gbk "base64" "B" t)
((ascii chinese-gb2312) cn-gb-2312 "base64" "B" t)
((ascii chinese-big5-1 chinese-big5-2)
chinese-big5 "base64" "B" t)
;; ((ascii japanese-jisx0208 japanese-jisx0213-1 japanese-jisx0213-2)
;; iso-2022-jp-3 "7bit" "B" t)
(nil utf-7 "7bit" "Q" t) ;; xxx
(nil utf-8 ,mew-charset-utf-8-encoding ,mew-charset-utf-8-header-encoding t)
(nil iso-2022-jp-2 "7bit" "B" t)))
(defvar mew-cs-database-for-arg
'((iso-2022-jp . euc-jp)
(iso-2022-kr . euc-kr)))
(defun mew-ecsdb-cs-for-arg (ecsdb)
(let* ((cs (mew-ecsdb-get-cs ecsdb))
(acs (cdr (assoc cs mew-cs-database-for-arg))))
(or acs cs)))
(if (and (not (mew-coding-system-p 'chinese-big5))
(mew-coding-system-p 'big5))
(define-coding-system-alias 'chinese-big5 'big5))
(mew-defstruct dcsdb charset cs)
(defvar mew-cs-database-for-decoding
`(("us-ascii" nil)
("iso-8859-1" iso-8859-1)
("iso-8859-2" iso-8859-2)
("iso-8859-3" iso-8859-3)
("iso-8859-4" iso-8859-4)
("iso-8859-5" iso-8859-5)
("iso-8859-6" iso-8859-6)
("iso-8859-7" iso-8859-7)
("iso-8859-8" iso-8859-8)
("iso-8859-8-i" iso-8859-8) ;; temporary solution
("iso-8859-9" iso-8859-9)
("iso-8859-15" iso-8859-15)
("iso-2022-cn" iso-2022-cn)
("iso-2022-cn-ext" iso-2022-cn-ext)
("gbk" gbk)
("gb2312" cn-gb-2312) ;; should be before cn-gb
("cn-gb" cn-gb-2312)
("hz-gb-2312" hz-gb-2312)
("big5" chinese-big5)
("cn-big5" chinese-big5)
("iso-2022-kr" iso-2022-kr)
("euc-kr" euc-kr)
("ks_c_5601-1987" euc-kr)
("iso-2022-jp" iso-2022-jp)
("iso-2022-jp-2" iso-2022-jp-2)
("iso-2022-jp-3" iso-2022-jp-3)
("euc-jp" euc-japan)
("shift_jis" shift_jis)
("windows-31j" cp932)
("tis-620" tis-620)
("koi8-r" koi8-r)
("iso-2022-int-1" iso-2022-int-1)
("utf-7" utf-7)
("unicode-1-1-utf-7" utf-7) ;; the old UTF-7 name, RFC 1642
("utf-8" utf-8)
,@(if (mew-coding-system-p 'windows-1251)
'(("windows-1250" windows-1250)
("windows-1251" windows-1251)
("windows-1252" windows-1252)
("windows-1253" windows-1253)
("windows-1254" windows-1254)
("windows-1255" windows-1255)
("windows-1256" windows-1256)
("windows-1257" windows-1257)
("windows-1258" windows-1258))
'(("windows-1250" cp1250)
("windows-1251" cp1251)
("windows-1252" cp1252)
("windows-1253" cp1253)
("windows-1254" cp1254)
("windows-1255" cp1255)
("windows-1256" cp1256)
("windows-1257" cp1257)
("windows-1258" cp1258)))))
;;
;; CS
;;
(defvar mew-charset-priority-list '(japanese-jisx0208
korean-ksc5601
latin-iso8859-2
latin-iso8859-3
latin-iso8859-4
hebrew-iso8859-8
latin-iso8859-9
;; for accent characters
cyrillic-iso8859-5
greek-iso8859-7
latin-iso8859-14
thai-tis620
latin-jisx0201
japanese-jisx0208-1978
japanese-jisx0213-1
japanese-jisx0213-2
katakana-jisx0201
unicode))
(if (fboundp 'set-charset-priority)
(defun mew-find-cs-region (beg end)
(let ((charset-list (charset-priority-list))
ret)
(catch 'find
(set-charset-priority 'latin-iso8859-1)
(setq ret (find-charset-region beg end))
(if (equal ret '(ascii latin-iso8859-1))
(throw 'find nil))
;;
(set-charset-priority 'latin-iso8859-15)
(setq ret (find-charset-region beg end))
(if (equal ret '(ascii latin-iso8859-15))
(throw 'find nil))
;;
(set-charset-priority 'cyrillic-iso8859-5)
(setq ret (find-charset-region beg end))
(if (equal ret '(ascii cyrillic-iso8859-5))
(throw 'find nil))
;;
(set-charset-priority 'greek-iso8859-7)
(setq ret (find-charset-region beg end))
(if (equal ret '(ascii greek-iso8859-7))
(throw 'find nil))
;;
(apply 'set-charset-priority mew-charset-priority-list)
(setq ret (find-charset-region beg end)))
(apply 'set-charset-priority charset-list)
ret))
(defalias 'mew-find-cs-region 'find-charset-region))
;; to internal
(defun mew-cs-decode-region (beg end cs)
(if cs (decode-coding-region beg end cs)))
;; to external
(defun mew-cs-encode-region (beg end cs)
(if cs (encode-coding-region beg end cs)))
;; to internal
(defun mew-cs-decode-string (str cs)
(if cs (decode-coding-string str cs) str))
;; to external
(defun mew-cs-encode-string (str cs)
(if cs (encode-coding-string str cs) str))
;;
;; Process environment
;;
(defun mew-set-process-cs (process read write)
(set-process-coding-system process read write))
(defun mew-set-buffer-cs (write)
(setq buffer-file-coding-system write))
(defmacro mew-plet (&rest body)
`(let ((coding-system-for-read 'binary)
(coding-system-for-write 'binary))
,@body))
(defmacro mew-piolet (read write &rest body)
;; (declare (indent 2))
`(let ((coding-system-for-read ,read)
(coding-system-for-write ,write))
,@body))
(put 'mew-piolet 'lisp-indent-function 2)
(defmacro mew-flet (&rest body)
`(let ((coding-system-for-read 'binary)
(coding-system-for-write 'binary)
(format-alist nil)
(auto-image-file-mode nil)
(jka-compr-inhibit t))
,@body))
(defmacro mew-frwlet (read write &rest body)
;; (declare (indent 2))
`(let ((coding-system-for-read ,read)
(coding-system-for-write ,write)
(format-alist nil)
(auto-image-file-mode nil)
(jka-compr-inhibit t))
,@body))
(put 'mew-frwlet 'lisp-indent-function 2)
(defmacro mew-alet (&rest body)
`(let ((default-file-name-coding-system nil)
(file-name-coding-system nil))
,@body))
;;
;;
;;
(defun mew-substring (str width &optional cnt nopad)
(let ((sw (if (null str) 0 (string-width str)))
(i 0) (w 0) cw wid)
(condition-case nil
(cond
((= sw width)
str)
((< sw width)
(if nopad
str
(concat str (make-string (- width sw) mew-sp))))
(t
(if cnt (setq width (- width 2)))
(catch 'loop
(while t
(setq cw (char-width (aref str i)))
(if (get-text-property i 'composition str) ;; for Emacs 21
(setq i (1+ i)))
(if (> (+ w cw) width)
(throw 'loop t))
(setq w (+ w cw))
(setq i (+ i 1))))
(cond
((= w width)
(if cnt
(concat (substring str 0 i) "..")
(substring str 0 i)))
(t
(setq wid (- width w))
(if cnt
(concat (substring str 0 i) (make-string wid mew-sp) "..")
(concat (substring str 0 i) (make-string wid mew-sp)))))))
(error
(if (> (length mew-error-broken-string) width)
(substring mew-error-broken-string 0 width)
mew-error-broken-string)))))
;;
;; Language specific
;;
(defvar mew-lc-kana 'katakana-jisx0201)
(defvar mew-lc-jp 'japanese-jisx0208)
;;
;; Stolen from mule-cmd.el
;;
(defun mew-coding-category-list () coding-category-list)
(defun mew-coding-category-system (cat) (eval cat))
(defun mew-reset-coding-systems (priority categories)
(let ((rest-ctgs categories))
(dolist (pri priority)
(set (car rest-ctgs) pri)
(setq rest-ctgs (cdr rest-ctgs)))
(if (fboundp 'update-coding-systems-internal)
(update-coding-systems-internal))
(mew-set-coding-priority categories)))
(defun mew-set-language-environment-coding-systems (language-name)
(let ((priority (get-language-info language-name 'coding-priority)))
(when priority
(let* ((categories (mapcar 'coding-system-category priority))
(orig-ctg (mew-coding-category-list))
(orig-pri (mapcar 'mew-coding-category-system orig-ctg)))
(mew-reset-coding-systems priority categories)
(cons orig-pri orig-ctg)))))
;;
;;
;;
(require 'mew-mule)
(provide 'mew-mule3)
;;; Copyright Notice:
;; Copyright (C) 1997-2015 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-mule3.el ends here
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