;;; mm-util.el --- Utility functions for Mule and low level things
-;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003
+;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004
;; Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
(aset string idx to))
(setq idx (1+ idx)))
string)))
+ (replace-in-string
+ . (lambda (string regexp rep &optional literal)
+ "See `replace-regexp-in-string', only the order of args differs."
+ (replace-regexp-in-string regexp rep string nil literal)))
(string-as-unibyte . identity)
(string-make-unibyte . identity)
(string-as-multibyte . identity)
(defun mm-coding-system-p (cs)
"Return non-nil if CS is a symbol naming a coding system.
-In XEmacs, also return non-nil if CS is a coding system object."
+In XEmacs, also return non-nil if CS is a coding system object.
+If CS is available, return CS itself in Emacs, and return a coding
+system object in XEmacs."
(if (fboundp 'find-coding-system)
(find-coding-system cs)
(if (fboundp 'coding-system-p)
- (coding-system-p cs)
+ (when (coding-system-p cs)
+ cs)
;; Is this branch ever actually useful?
- (memq cs (mm-get-coding-system-list)))))
+ (car (memq cs (mm-get-coding-system-list))))))
(defvar mm-charset-synonym-alist
`(
(mm-coding-system-p 'cp1250))
'((windows-1250 . cp1250)))
;; A Microsoft misunderstanding.
+ ,@(if (and (not (mm-coding-system-p 'unicode))
+ (mm-coding-system-p 'utf-16-le))
+ '((unicode . utf-16-le)))
+ ;; A Microsoft misunderstanding.
,@(unless (mm-coding-system-p 'ks_c_5601-1987)
(if (mm-coding-system-p 'cp949)
'((ks_c_5601-1987 . cp949))
(big5 chinese-big5-1 chinese-big5-2)
(tibetan tibetan)
(thai-tis620 thai-tis620)
+ (windows-1251 cyrillic-iso8859-5)
(iso-2022-7bit ethiopic arabic-1-column arabic-2-column)
(iso-2022-jp-2 latin-iso8859-1 greek-iso8859-7
latin-jisx0201 japanese-jisx0208-1978
chinese-gb2312 japanese-jisx0208
- korean-ksc5601 japanese-jisx0212
- katakana-jisx0201)
+ korean-ksc5601 japanese-jisx0212)
(iso-2022-int-1 latin-iso8859-1 greek-iso8859-7
latin-jisx0201 japanese-jisx0208-1978
chinese-gb2312 japanese-jisx0208
chinese-cns11643-3 chinese-cns11643-4
chinese-cns11643-5 chinese-cns11643-6
chinese-cns11643-7)
+ (iso-2022-jp-3 latin-jisx0201 japanese-jisx0208-1978 japanese-jisx0208
+ japanese-jisx0213-1 japanese-jisx0213-2)
+ (shift_jis latin-jisx0201 katakana-jisx0201 japanese-jisx0208)
,(if (or (not (fboundp 'charsetp)) ;; non-Mule case
(charsetp 'unicode-a)
(not (mm-coding-system-p 'mule-utf-8)))
(coding-system-get 'mule-utf-8 'safe-charsets)))))
"Alist of MIME-charset/MULE-charsets.")
-;; Correct by construction, but should be unnecessary:
-;; XEmacs hates it.
-(when (and (not (featurep 'xemacs))
- (fboundp 'coding-system-list)
- (fboundp 'sort-coding-systems))
- (setq mm-mime-mule-charset-alist
- (apply
- 'nconc
- (mapcar
- (lambda (cs)
- (when (and (or (coding-system-get cs :mime-charset) ; Emacs 22
- (coding-system-get cs 'mime-charset))
- (not (eq t (coding-system-get cs 'safe-charsets))))
- (list (cons (or (coding-system-get cs :mime-charset)
- (coding-system-get cs 'mime-charset))
- (delq 'ascii
- (coding-system-get cs 'safe-charsets))))))
- (sort-coding-systems (coding-system-list 'base-only))))))
+(defun mm-enrich-utf-8-by-mule-ucs ()
+ "Make the `utf-8' MIME charset usable by the Mule-UCS package.
+This function will run when the `un-define' module is loaded under
+XEmacs, and fill the `utf-8' entry in `mm-mime-mule-charset-alist'
+with Mule charsets. It is completely useless for Emacs."
+ (unless (cdr (delete '(mm-enrich-utf-8-by-mule-ucs)
+ (assoc "un-define" after-load-alist)))
+ (setq after-load-alist
+ (delete '("un-define") after-load-alist)))
+ (when (boundp 'unicode-basic-translation-charset-order-list)
+ (condition-case nil
+ (let ((val (delq
+ 'ascii
+ (copy-sequence
+ (symbol-value
+ 'unicode-basic-translation-charset-order-list))))
+ (elem (assq 'utf-8 mm-mime-mule-charset-alist)))
+ (if elem
+ (setcdr elem val)
+ (setq mm-mime-mule-charset-alist
+ (nconc mm-mime-mule-charset-alist
+ (list (cons 'utf-8 val))))))
+ (error))))
+
+;; Correct by construction, but should be unnecessary for Emacs:
+(if (featurep 'xemacs)
+ (eval-after-load "un-define" '(mm-enrich-utf-8-by-mule-ucs))
+ (when (and (fboundp 'coding-system-list)
+ (fboundp 'sort-coding-systems))
+ (let ((css (sort-coding-systems (coding-system-list 'base-only)))
+ cs mime mule alist)
+ (while css
+ (setq cs (pop css)
+ mime (or (coding-system-get cs :mime-charset) ; Emacs 22
+ (coding-system-get cs 'mime-charset)))
+ (when (and mime
+ (not (eq t (setq mule
+ (coding-system-get cs 'safe-charsets))))
+ (not (assq mime alist)))
+ (push (cons mime (delq 'ascii mule)) alist)))
+ (setq mm-mime-mule-charset-alist (nreverse alist)))))
(defvar mm-hack-charsets '(iso-8859-15 iso-2022-jp-2)
"A list of special charsets.
(if (boundp 'current-language-environment)
(let ((lang (symbol-value 'current-language-environment)))
(cond ((string= lang "Japanese")
- ;; Japanese users may prefer iso-2022-jp to shift-jis.
- '(iso-2022-jp iso-2022-jp-2 japanese-shift-jis
- iso-latin-1 utf-8)))))
+ ;; Japanese users prefer iso-2022-jp to euc-japan or
+ ;; shift_jis, however iso-8859-1 should be used when
+ ;; there are only ASCII text and Latin-1 characters.
+ '(iso-8859-1 iso-2022-jp iso-2022-jp-2 shift_jis utf-8)))))
"Preferred coding systems for encoding outgoing messages.
More than one suitable coding system may be found for some text.
By default, the coding system with the highest priority is used
to encode outgoing messages (see `sort-coding-systems'). If this
variable is set, it overrides the default priority."
+ :version "21.2"
:type '(repeat (symbol :tag "Coding system"))
:group 'mime)
"Return the MIME charset corresponding to the given Mule CHARSET."
(if (and (fboundp 'find-coding-systems-for-charsets)
(fboundp 'sort-coding-systems))
- (let (mime)
- (dolist (cs (sort-coding-systems
- (copy-sequence
- (find-coding-systems-for-charsets (list charset)))))
- (unless mime
- (when cs
- (setq mime (or (coding-system-get cs :mime-charset)
- (coding-system-get cs 'mime-charset))))))
+ (let ((css (sort (sort-coding-systems
+ (find-coding-systems-for-charsets (list charset)))
+ 'mm-sort-coding-systems-predicate))
+ cs mime)
+ (while (and (not mime)
+ css)
+ (when (setq cs (pop css))
+ (setq mime (or (coding-system-get cs :mime-charset)
+ (coding-system-get cs 'mime-charset)))))
mime)
- (let ((alist mm-mime-mule-charset-alist)
+ (let ((alist (mapcar (lambda (cs)
+ (assq cs mm-mime-mule-charset-alist))
+ (sort (mapcar 'car mm-mime-mule-charset-alist)
+ 'mm-sort-coding-systems-predicate)))
out)
(while alist
(when (memq charset (cdar alist))
(let ((priorities
(mapcar (lambda (cs)
;; Note: invalid entries are dropped silently
- (and (coding-system-p cs)
+ (and (setq cs (mm-coding-system-p cs))
(coding-system-base cs)))
mm-coding-system-priorities)))
- (> (length (memq a priorities))
- (length (memq b priorities)))))
+ (and (setq a (mm-coding-system-p a))
+ (if (setq b (mm-coding-system-p b))
+ (> (length (memq (coding-system-base a) priorities))
+ (length (memq (coding-system-base b) priorities)))
+ t))))
(defun mm-find-mime-charset-region (b e &optional hack-charsets)
"Return the MIME charsets needed to encode the region between B and E.
(put 'mm-with-unibyte-buffer 'lisp-indent-function 0)
(put 'mm-with-unibyte-buffer 'edebug-form-spec '(body))
+(defmacro mm-with-multibyte-buffer (&rest forms)
+ "Create a temporary buffer, and evaluate FORMS there like `progn'.
+Use multibyte mode for this."
+ `(let ((default-enable-multibyte-characters t))
+ (with-temp-buffer ,@forms)))
+(put 'mm-with-multibyte-buffer 'lisp-indent-function 0)
+(put 'mm-with-multibyte-buffer 'edebug-form-spec '(body))
+
(defmacro mm-with-unibyte-current-buffer (&rest forms)
"Evaluate FORMS with current buffer temporarily made unibyte.
Also bind `default-enable-multibyte-characters' to nil.
(put 'mm-with-unibyte-current-buffer 'edebug-form-spec '(body))
(defmacro mm-with-unibyte (&rest forms)
- "Eval the FORMS with the default value of `enable-multibyte-characters' nil, ."
+ "Eval the FORMS with the default value of `enable-multibyte-characters' nil."
`(let (default-enable-multibyte-characters)
,@forms))
(put 'mm-with-unibyte 'lisp-indent-function 0)
(put 'mm-with-unibyte 'edebug-form-spec '(body))
+(defmacro mm-with-multibyte (&rest forms)
+ "Eval the FORMS with the default value of `enable-multibyte-characters' t."
+ `(let ((default-enable-multibyte-characters t))
+ ,@forms))
+(put 'mm-with-multibyte 'lisp-indent-function 0)
+(put 'mm-with-multibyte 'edebug-form-spec '(body))
+
(defun mm-find-charset-region (b e)
"Return a list of Emacs charsets in the region B to E."
(cond
(defun mm-image-load-path (&optional package)
(let (dir result)
(dolist (path load-path (nreverse result))
- (if (file-directory-p
- (setq dir (concat (file-name-directory
- (directory-file-name path))
- "etc/" (or package "gnus/"))))
- (push dir result))
+ (when (and path
+ (file-directory-p
+ (setq dir (concat (file-name-directory
+ (directory-file-name path))
+ "etc/" (or package "gnus/")))))
+ (push dir result))
(push path result))))
;; Fixme: This doesn't look useful where it's used.