;;; mule.el --- basic commands for mulitilingual environment
-;; Copyright (C) 1995 Electrotechnical Laboratory, JAPAN.
-;; Licensed to the Free Software Foundation.
-;; Copyright (C) 2001, 2002 Free Software Foundation, Inc.
+;; Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+;; Free Software Foundation, Inc.
+;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+;; 2005, 2006, 2007, 2008
+;; National Institute of Advanced Industrial Science and Technology (AIST)
+;; Registration Number H14PRO021
;; Keywords: mule, multilingual, character set, coding system
;; 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 2, or (at your option)
+;; the Free Software Foundation; either version 3, or (at your option)
;; any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; 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., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
;;; Commentary:
(defun load-with-code-conversion (fullname file &optional noerror nomessage)
"Execute a file of Lisp code named FILE whose absolute name is FULLNAME.
The file contents are decoded before evaluation if necessary.
-If optional second arg NOERROR is non-nil,
+If optional third arg NOERROR is non-nil,
report no error if FILE doesn't exist.
Print messages at start and end of loading unless
- optional third arg NOMESSAGE is non-nil.
+ optional fourth arg NOMESSAGE is non-nil.
Return t if file exists."
(if (null (file-readable-p fullname))
(and (null noerror)
(let ((load-file-name fullname)
(set-auto-coding-for-load t)
(inhibit-file-name-operation nil))
- (save-excursion
- (set-buffer buffer)
- (insert-file-contents fullname)
+ (with-current-buffer buffer
+ ;; Don't let deactivate-mark remain set.
+ (let (deactivate-mark)
+ (insert-file-contents fullname))
;; If the loaded file was inserted with no-conversion or
;; raw-text coding system, make the buffer unibyte.
;; Otherwise, eval-buffer might try to interpret random
;; Make `kill-buffer' quiet.
(set-buffer-modified-p nil))
;; Have the original buffer current while we eval.
- (eval-buffer buffer nil file
+ (eval-buffer buffer nil
+ ;; This is compatible with what `load' does.
+ (if purify-flag file fullname)
;; If this Emacs is running with --unibyte,
;; convert multibyte strings to unibyte
;; after reading them.
))
(let (kill-buffer-hook kill-buffer-query-functions)
(kill-buffer buffer)))
- (let ((hook (assoc file after-load-alist)))
- (when hook
- (mapcar (function eval) (cdr hook))))
+ (unless purify-flag
+ (do-after-load-evaluation fullname))
+
(unless (or nomessage noninteractive)
(if source
(message "Loading %s (source)...done" file)
(< (aref vector 0) 160)))))
(defsubst charsetp (object)
- "T if OBJECT is a charset."
+ "Return t if OBJECT is a charset."
(and (symbolp object) (vectorp (get object 'charset))))
(defsubst charset-info (charset)
CODE1 and CODE2 are optional, but if you don't supply
sufficient position codes, return a generic character which stands for
all characters or group of characters in the character set.
-A generic character can be used to index a char table (e.g. syntax-table).
+A generic character can be used to index a char table (e.g. `syntax-table').
Such character sets as ascii, eight-bit-control, and eight-bit-graphic
don't have corresponding generic characters. If CHARSET is one of
(make-char-internal (charset-id charset) code1 code2))
(put 'make-char 'byte-compile
- (function
- (lambda (form)
- (let ((charset (nth 1 form)))
- (if (charset-quoted-standard-p charset)
- (byte-compile-normal-call
- (cons 'make-char-internal
- (cons (charset-id (nth 1 charset)) (nthcdr 2 form))))
- (byte-compile-normal-call
- (cons 'make-char-internal
- (cons (list 'charset-id charset) (nthcdr 2 form)))))))))
+ (lambda (form)
+ (let ((charset (nth 1 form)))
+ (byte-compile-normal-call
+ (cons 'make-char-internal
+ (cons (if (charset-quoted-standard-p charset)
+ (charset-id (nth 1 charset))
+ (list 'charset-id charset))
+ (nthcdr 2 form)))))))
(defun charset-list ()
"Return list of charsets ever defined.
Currently the only supported coded character set is `ucs' (ISO/IEC
10646: Universal Multi-Octet Coded Character Set), and the result is
translated through the translation-table named
-`utf-translation-table-for-decode' or the translation-hash-table named
-`utf-subst-table-for-decode'.
+`utf-translation-table-for-decode', or through the
+translation-hash-table named `utf-subst-table-for-decode'
+\(if `utf-translate-cjk-mode' is non-nil).
Optional argument RESTRICTION specifies a way to map the pair of CCS
and CODE-POINT to a character. Currently not supported and just ignored."
(cond
((eq ccs 'ucs)
- (or (utf-lookup-subst-table-for-decode code-point)
+ (or (and utf-translate-cjk-mode
+ (utf-lookup-subst-table-for-decode code-point))
(let ((c (cond
((< code-point 160)
code-point)
Currently the only supported coded character set is `ucs' (ISO/IEC
10646: Universal Multi-Octet Coded Character Set), and CHAR is first
translated through the translation-table named
-`utf-translation-table-for-encode' or the translation-hash-table named
-`utf-subst-table-for-encode'.
+`utf-translation-table-for-encode', or through the
+translation-hash-table named `utf-subst-table-for-encode' \(if
+`utf-translate-cjk-mode' is non-nil).
CHAR should be in one of these charsets:
ascii, latin-iso8859-1, mule-unicode-0100-24ff, mule-unicode-2500-33ff,
(charset (car split))
trans)
(cond ((eq ccs 'ucs)
- (or (utf-lookup-subst-table-for-encode char)
+ (or (and utf-translate-cjk-mode
+ (utf-lookup-subst-table-for-encode char))
(let ((table (get 'utf-translation-table-for-encode
'translation-table)))
(setq trans (aref table char))
char))))))))
\f
+;; Save the ASCII case table in case we need it later. Some locales
+;; (such as Turkish) modify the case behavior of ASCII characters,
+;; which can interfere with networking code that uses ASCII strings.
+
+(defvar ascii-case-table
+ ;; Code copied from copy-case-table to avoid requiring case-table.el
+ (let ((tbl (copy-sequence (standard-case-table)))
+ (up (char-table-extra-slot (standard-case-table) 0)))
+ (if up (set-char-table-extra-slot tbl 0 (copy-sequence up)))
+ (set-char-table-extra-slot tbl 1 nil)
+ (set-char-table-extra-slot tbl 2 nil)
+ tbl)
+ "Case table for the ASCII character set.")
+\f
;; Coding system stuff
;; Coding system is a symbol that has the property `coding-system'.
Any alias nor subsidiary coding systems are not base coding system."
(car (coding-system-get coding-system 'alias-coding-systems)))
-(defalias 'coding-system-parent 'coding-system-base)
-(make-obsolete 'coding-system-parent 'coding-system-base "20.3")
-
;; Coding system also has a property `eol-type'.
;;
;; This property indicates how the coding system handles end-of-line
(subsidiaries (vector (intern (format "%s-unix" coding-system))
(intern (format "%s-dos" coding-system))
(intern (format "%s-mac" coding-system))))
- (i 0)
- temp)
- (while (< i 3)
- (put (aref subsidiaries i) 'coding-system coding-spec)
- (put (aref subsidiaries i) 'eol-type i)
- (add-to-coding-system-list (aref subsidiaries i))
- (setq coding-system-alist
- (cons (list (symbol-name (aref subsidiaries i)))
- coding-system-alist))
- (setq i (1+ i)))
+ elt)
+ (dotimes (i 3)
+ (setq elt (aref subsidiaries i))
+ (put elt 'coding-system coding-spec)
+ (put elt 'eol-type i)
+ (put elt 'coding-system-define-form nil)
+ (add-to-coding-system-list elt)
+ (or (assoc (symbol-name elt) coding-system-alist)
+ (setq coding-system-alist
+ (cons (list (symbol-name elt)) coding-system-alist))))
subsidiaries))
(defun transform-make-coding-system-args (name type &optional doc-string props)
If the value is non-nil, the coding system preserves composition
information.
+ o ascii-incompatible
+
+ If the value is non-nil, the coding system is not compatible
+ with ASCII, which means it encodes or decodes ASCII character
+ string to the different byte sequence.
+
These properties are set in PLIST, a property list. This function
also sets properties `coding-category' and `alias-coding-systems'
automatically.
;; At last, register CODING-SYSTEM in `coding-system-list' and
;; `coding-system-alist'.
(add-to-coding-system-list coding-system)
- (setq coding-system-alist (cons (list (symbol-name coding-system))
- coding-system-alist))
+ (or (assoc (symbol-name coding-system) coding-system-alist)
+ (setq coding-system-alist (cons (list (symbol-name coding-system))
+ coding-system-alist)))
;; For a coding system of cateogory iso-8-1 and iso-8-2, create
;; XXX-with-esc variants.
(put alias 'coding-system (coding-system-spec coding-system))
(put alias 'coding-system-define-form nil)
(add-to-coding-system-list alias)
- (setq coding-system-alist (cons (list (symbol-name alias))
- coding-system-alist))
+ (or (assoc (symbol-name alias) coding-system-alist)
+ (setq coding-system-alist (cons (list (symbol-name alias))
+ coding-system-alist)))
(let ((eol-type (coding-system-eol-type coding-system)))
(if (vectorp eol-type)
(progn
FROM is a form to evaluate to define the coding-system."
(put symbol 'coding-system-define-form form)
(setq coding-system-alist (cons (list (symbol-name symbol))
- coding-system-alist)))
+ coding-system-alist))
+ (dolist (elt '("-unix" "-dos" "-mac"))
+ (let ((name (concat (symbol-name symbol) elt)))
+ (put (intern name) 'coding-system-define-form form)
+ (setq coding-system-alist (cons (list name) coding-system-alist)))))
(defun set-buffer-file-coding-system (coding-system &optional force nomodify)
"Set the file coding-system of the current buffer to CODING-SYSTEM.
don't want to mark the buffer modified, specify t for NOMODIFY.
If you know exactly what coding system you want to use,
just set the variable `buffer-file-coding-system' directly."
- (interactive "zCoding system for saving file (default, nil): \nP")
+ (interactive "zCoding system for saving file (default nil): \nP")
(check-coding-system coding-system)
(if (and coding-system buffer-file-coding-system (null force))
(setq coding-system
buffer's previous `buffer-file-coding-system' value (if it is
specified there). Otherwise, determine it from the file contents as
usual for visiting a file."
- (interactive "zCoding system for visited file (default, nil): \nP")
+ (interactive "zCoding system for visited file (default nil): \nP")
(check-coding-system coding-system)
(if (and coding-system buffer-file-coding-system (null force))
(setq coding-system
"Set coding system for decoding and encoding file names to CODING-SYSTEM.
It actually just set the variable `file-name-coding-system' (which
see) to CODING-SYSTEM."
- (interactive "zCoding system for file names (default, nil): ")
+ (interactive "zCoding system for file names (default nil): ")
(check-coding-system coding-system)
+ (if (and coding-system
+ (coding-system-get coding-system 'ascii-incompatible))
+ (error "%s is not ASCII-compatible" coding-system))
(setq file-name-coding-system coding-system))
(defvar default-terminal-coding-system nil
default-terminal-coding-system)
default-terminal-coding-system)))
(read-coding-system
- (format "Coding system for terminal display (default, %s): "
+ (format "Coding system for terminal display (default %s): "
default)
default))))
(if (and (not coding-system)
default-keyboard-coding-system)
default-keyboard-coding-system)))
(read-coding-system
- (format "Coding system for keyboard input (default, %s): "
+ (format "Coding system for keyboard input (default %s): "
default)
default))))
(if (and (not coding-system)
(setq coding-system default-keyboard-coding-system))
(if coding-system
(setq default-keyboard-coding-system coding-system))
+ (if (and coding-system
+ (coding-system-get coding-system 'ascii-incompatible))
+ (error "%s is not ASCII-compatible" coding-system))
(set-keyboard-coding-system-internal coding-system)
(setq keyboard-coding-system coding-system)
(encoded-kbd-mode (if coding-system 1 0)))
"Specify coding system for keyboard input.
If you set this on a terminal which can't distinguish Meta keys from
8-bit characters, you will have to use ESC to type Meta characters.
-See Info node `Specify Coding' and Info node `Single-Byte Character Support'.
+See Info node `Terminal Coding' and Info node `Unibyte Mode'.
On non-windowing terminals, this is set from the locale by default.
Setting this variable directly does not take effect;
use either \\[customize] or \\[set-keyboard-coding-system]."
:type '(coding-system :tag "Coding system")
- :link '(info-link "(emacs)Specify Coding")
- :link '(info-link "(emacs)Single-Byte Character Support")
+ :link '(info-link "(emacs)Terminal Coding")
+ :link '(info-link "(emacs)Unibyte Mode")
:set (lambda (symbol value)
;; Don't load encoded-kbd-mode unnecessarily.
(if (or value (boundp 'encoded-kbd-mode))
(interactive
(list (read-coding-system
(if last-next-selection-coding-system
- (format "Coding system for the next X selection (default, %S): "
+ (format "Coding system for the next X selection (default %S): "
last-next-selection-coding-system)
"Coding system for the next X selection: ")
last-next-selection-coding-system)))
;;; FILE I/O
(defcustom auto-coding-alist
- '(("\\.\\(arc\\|zip\\|lzh\\|zoo\\|jar\\|sx[dmicw]\\|tar\\|tgz\\)\\'" . no-conversion)
+ ;; .exe and .EXE are added to support archive-mode looking at DOS
+ ;; self-extracting exe archives.
+ '(("\\.\\(arc\\|zip\\|lzh\\|lha\\|zoo\\|[jew]ar\\|xpi\\|exe\\)\\'" . no-conversion)
+ ("\\.\\(ARC\\|ZIP\\|LZH\\|LHA\\|ZOO\\|[JEW]AR\\|XPI\\|EXE\\)\\'" . no-conversion)
+ ("\\.\\(sx[dmicw]\\|odt\\|tar\\|tgz\\)\\'" . no-conversion)
("\\.\\(gz\\|Z\\|bz\\|bz2\\|gpg\\)\\'" . no-conversion)
+ ("\\.\\(jpe?g\\|png\\|gif\\|tiff?\\|p[bpgn]m\\)\\'" . no-conversion)
+ ("\\.pdf\\'" . no-conversion)
("/#[^/]+#\\'" . emacs-mule))
"Alist of filename patterns vs corresponding coding systems.
Each element looks like (REGEXP . CODING-SYSTEM).
(symbol :tag "Coding system"))))
(defcustom auto-coding-regexp-alist
- '(("^BABYL OPTIONS:[ \t]*-\\*-[ \t]*rmail[ \t]*-\\*-" . no-conversion))
+ '(("^BABYL OPTIONS:[ \t]*-\\*-[ \t]*rmail[ \t]*-\\*-" . no-conversion)
+ ("\\`\xFE\xFF" . utf-16be-with-signature)
+ ("\\`\xFF\xFE" . utf-16le-with-signature)
+ ("\\`\xEF\xBB\xBF" . utf-8))
"Alist of patterns vs corresponding coding systems.
Each element looks like (REGEXP . CODING-SYSTEM).
A file whose first bytes match REGEXP is decoded by CODING-SYSTEM on reading.
:type '(repeat (cons (regexp :tag "Regexp")
(symbol :tag "Coding system"))))
+(defun auto-coding-regexp-alist-lookup (from to)
+ "Lookup `auto-coding-regexp-alist' for the contents of the current buffer.
+The value is a coding system is specified for the region FROM and TO,
+or nil."
+ (save-excursion
+ (goto-char from)
+ (let ((alist auto-coding-regexp-alist)
+ coding-system)
+ (while (and alist (not coding-system))
+ (let ((regexp (car (car alist))))
+ (if enable-multibyte-characters
+ (setq regexp (string-to-multibyte regexp)))
+ (if (re-search-forward regexp to t)
+ (setq coding-system (cdr (car alist)))
+ (setq alist (cdr alist)))))
+ coding-system)))
+
;; See the bottom of this file for built-in auto coding functions.
(defcustom auto-coding-functions '(sgml-xml-auto-coding-function
sgml-html-meta-auto-coding-function)
(setq alist (cdr alist))))
coding-system))
-(defun set-auto-coding (filename size)
- "Return coding system for a file FILENAME of which SIZE bytes follow point.
+(put 'enable-character-translation 'permanent-local t)
+(put 'enable-character-translation 'safe-local-variable 'booleanp)
+
+(defun find-auto-coding (filename size)
+ "Find a coding system for a file FILENAME of which SIZE bytes follow point.
These bytes should include at least the first 1k of the file
and the last 3k of the file, but the middle may be omitted.
succeed, it checks to see if any function in `auto-coding-functions'
gives a match.
-The return value is the specified coding system, or nil if nothing is
-specified.
-
-The variable `set-auto-coding-function' (which see) is set to this
-function by default."
- (or (auto-coding-alist-lookup filename)
+If a coding system is specifed, the return value is a
+cons (CODING . SOURCE), where CODING is the specified coding
+system and SOURCE is a symbol `auto-coding-alist',
+`auto-coding-regexp-alist', `coding:', or `auto-coding-functions'
+indicating by what CODING is specified. Note that the validity
+of CODING is not checked; it's the caller's responsibility to check it.
+
+If nothing is specified, the return value is nil."
+ (or (let ((coding-system (auto-coding-alist-lookup filename)))
+ (if coding-system
+ (cons coding-system 'auto-coding-alist)))
;; Try using `auto-coding-regexp-alist'.
- (save-excursion
- (let ((alist auto-coding-regexp-alist)
- coding-system)
- (while (and alist (not coding-system))
- (let ((regexp (car (car alist))))
- (when (re-search-forward regexp (+ (point) size) t)
- (setq coding-system (cdr (car alist)))))
- (setq alist (cdr alist)))
- coding-system))
+ (let ((coding-system (auto-coding-regexp-alist-lookup (point)
+ (+ (point) size))))
+ (if coding-system
+ (cons coding-system 'auto-coding-regexp-alist)))
(let* ((case-fold-search t)
(head-start (point))
(head-end (+ head-start (min size 1024)))
(tail-start (+ head-start (max (- size 3072) 0)))
(tail-end (+ head-start size))
- coding-system head-found tail-found pos)
+ coding-system head-found tail-found pos char-trans)
;; Try a short cut by searching for the string "coding:"
;; and for "unibyte:" at the head and tail of SIZE bytes.
(setq head-found (or (search-forward "coding:" head-end t)
- (search-forward "unibyte:" head-end t)))
+ (search-forward "unibyte:" head-end t)
+ (search-forward "enable-character-translation:"
+ head-end t)))
(if (and head-found (> head-found tail-start))
;; Head and tail are overlapped.
(setq tail-found head-found)
(goto-char tail-start)
(setq tail-found (or (search-forward "coding:" tail-end t)
- (search-forward "unibyte:" tail-end t))))
+ (search-forward "unibyte:" tail-end t)
+ (search-forward "enable-character-translation:"
+ tail-end t))))
;; At first check the head.
(when head-found
(re-search-forward
"\\(.*;\\)?[ \t]*coding:[ \t]*\\([^ ;]+\\)"
head-end t))
- (setq coding-system (intern (match-string 2)))
- (or (coding-system-p coding-system)
- (setq coding-system nil)))))
+ (setq coding-system (intern (match-string 2))))
+ (when (re-search-forward
+ "\\(.*;\\)?[ \t]*enable-character-translation:[ \t]*\\([^ ;]+\\)"
+ head-end t)
+ (setq char-trans (match-string 2)))))
;; If no coding: tag in the head, check the tail.
;; Here we must pay attention to the case that the end-of-line
;; is just "\r" and we can't use "^" nor "$" in regexp.
- (when (and tail-found (not coding-system))
+ (when (and tail-found (or (not coding-system) (not char-trans)))
(goto-char tail-start)
- (re-search-forward "[\r\n]\^L" nil t)
+ (re-search-forward "[\r\n]\^L" tail-end t)
(if (re-search-forward
"[\r\n]\\([^[\r\n]*\\)[ \t]*Local Variables:[ \t]*\\([^\r\n]*\\)[\r\n]"
tail-end t)
"[\r\n]" prefix
"[ \t]*unibyte[ \t]*:[ \t]*\\([^ \t\r\n]+\\)[ \t]*"
suffix "[\r\n]"))
+ (re-char-trans
+ (concat
+ "[\r\n]" prefix
+ "[ \t]*enable-character-translation[ \t]*:[ \t]*\\([^ \t\r\n]+\\)[ \t]*"
+ suffix "[\r\n]"))
(re-end
(concat "[\r\n]" prefix "[ \t]*End *:[ \t]*" suffix
"[\r\n]?"))
(setq coding-system 'raw-text))
(when (and (not coding-system)
(re-search-forward re-coding tail-end t))
- (setq coding-system (intern (match-string 1)))
- (or (coding-system-p coding-system)
- (setq coding-system nil))))))
- coding-system)
+ (setq coding-system (intern (match-string 1))))
+ (when (and (not char-trans)
+ (re-search-forward re-char-trans tail-end t))
+ (setq char-trans (match-string 1))))))
+ (if coding-system
+ ;; If the coding-system name ends with "!", remove it and
+ ;; set char-trans to "nil".
+ (let ((name (symbol-name coding-system)))
+ (if (= (aref name (1- (length name))) ?!)
+ (setq coding-system (intern (substring name 0 -1))
+ char-trans "nil"))))
+ (when (and char-trans
+ (not (setq char-trans (intern char-trans))))
+ (make-local-variable 'enable-character-translation)
+ (setq enable-character-translation nil))
+ (if coding-system
+ (cons coding-system :coding)))
;; Finally, try all the `auto-coding-functions'.
(let ((funcs auto-coding-functions)
(coding-system nil))
(goto-char (point-min))
(funcall (pop funcs) size))
(error nil))))
- coding-system)))
+ (if coding-system
+ (cons coding-system 'auto-coding-functions)))))
+
+(defun set-auto-coding (filename size)
+ "Return coding system for a file FILENAME of which SIZE bytes follow point.
+See `find-auto-coding' for how the coding system is found.
+Return nil if an invalid coding system is found.
+
+The variable `set-auto-coding-function' (which see) is set to this
+function by default."
+ (let ((found (find-auto-coding filename size)))
+ (if (and found (coding-system-p (car found)))
+ (car found))))
(setq set-auto-coding-function 'set-auto-coding)
(let ((pos-marker (copy-marker (+ (point) inserted)))
;; Prevent locking.
(buffer-file-name nil))
- (set-buffer-multibyte nil)
+ (if visit
+ ;; If we're doing this for find-file,
+ ;; don't record undo info; this counts as
+ ;; part of producing the buffer's initial contents.
+ (let ((buffer-undo-list t))
+ (set-buffer-multibyte nil))
+ (set-buffer-multibyte nil))
(setq inserted (- pos-marker (point)))))
- (set-buffer-modified-p modified-p))))
+ (restore-buffer-modified-p modified-p))))
inserted)
;; The coding-spec and eol-type of coding-system returned is decided
(or coding
(setq coding (car (find-operation-coding-system
'insert-file-contents
- filename visit beg end replace))))
+ (cons filename (current-buffer))
+ visit beg end replace))))
(if (coding-system-p coding)
(or enable-multibyte-characters
(setq coding
(progn
(set-category-table ,table)
,@body)
- (save-current-buffer
- (set-buffer ,old-buffer)
+ (with-current-buffer ,old-buffer
(set-category-table ,old-table))))))
(defun define-translation-hash-table (symbol table)
(when (re-search-forward "\\`[[:space:]\n]*<\\?xml" size t)
(let ((end (save-excursion
;; This is a hack.
- (re-search-forward "\"\\s-*\\?>" size t))))
+ (re-search-forward "[\"']\\s-*\\?>" size t))))
(when end
- (if (re-search-forward "encoding=\"\\(.+?\\)\"" end t)
+ (if (re-search-forward "encoding=[\"']\\(.+?\\)[\"']" end t)
(let* ((match (match-string 1))
(sym (intern (downcase match))))
(if (coding-system-p sym)
(defun sgml-html-meta-auto-coding-function (size)
"If the buffer has an HTML meta tag, use it to determine encoding.
This function is intended to be added to `auto-coding-functions'."
- (setq size (min (+ (point) size)
- ;; Only search forward 10 lines
- (save-excursion
- (forward-line 10)
- (point))))
- (when (and (search-forward "<html" size t)
- (re-search-forward "<meta\\s-+http-equiv=\"content-type\"\\s-+content=\"text/\\sw+;\\s-*charset=\\(.+?\\)\"" size t))
+ (let ((case-fold-search t))
+ (setq size (min (+ (point) size)
+ (save-excursion
+ ;; Limit the search by the end of the HTML header.
+ (or (search-forward "</head>" size t)
+ ;; In case of no header, search only 10 lines.
+ (forward-line 10))
+ (point))))
+ ;; Make sure that the buffer really contains an HTML document, by
+ ;; checking that it starts with a doctype or a <HTML> start tag
+ ;; (allowing for whitespace at bob). Note: 'DOCTYPE NETSCAPE' is
+ ;; useful for Mozilla bookmark files.
+ (when (and (re-search-forward "\\`[[:space:]\n]*\\(<!doctype[[:space:]\n]+\\(html\\|netscape\\)\\|<html\\)" size t)
+ (re-search-forward "<meta\\s-+http-equiv=[\"']?content-type[\"']?\\s-+content=[\"']text/\\sw+;\\s-*charset=\\(.+?\\)[\"']" size t))
(let* ((match (match-string 1))
(sym (intern (downcase match))))
(if (coding-system-p sym)
sym
(message "Warning: unknown coding system \"%s\"" match)
- nil))))
+ nil)))))
;;;
(provide 'mule)
-;;; arch-tag: 9aebaa6e-0e8a-40a9-b857-cb5d04a39e7c
+;; arch-tag: 9aebaa6e-0e8a-40a9-b857-cb5d04a39e7c
;;; mule.el ends here
HCoop / bpt / emacs.git / blobdiff