(defvar mm-mime-mule-charset-alist )
+;; Emulate functions that are not available in every (X)Emacs version.
+;; The name of a function is prefixed with mm-, like `mm-char-int' for
+;; `char-int' that is a native XEmacs function, not available in Emacs.
+;; Gnus programs all should use mm- functions, not the original ones.
(eval-and-compile
(mapc
(lambda (elem)
(if (fboundp (car elem))
(defalias nfunc (car elem))
(defalias nfunc (cdr elem)))))
- '((coding-system-list . ignore)
+ `(;; `coding-system-list' is not available in XEmacs 21.4 built
+ ;; without the `file-coding' feature.
+ (coding-system-list . ignore)
+ ;; `char-int' is an XEmacs function, not available in Emacs.
(char-int . identity)
+ ;; `coding-system-equal' is an Emacs function, not available in XEmacs.
(coding-system-equal . equal)
+ ;; `annotationp' is an XEmacs function, not available in Emacs.
(annotationp . ignore)
+ ;; `set-buffer-file-coding-system' is not available in XEmacs 21.4
+ ;; built without the `file-coding' feature.
(set-buffer-file-coding-system . ignore)
+ ;; `read-charset' is an Emacs function, not available in XEmacs.
(read-charset
- . (lambda (prompt)
- "Return a charset."
- (intern
- (completing-read
- prompt
- (mapcar (lambda (e) (list (symbol-name (car e))))
- mm-mime-mule-charset-alist)
- nil t))))
+ . ,(lambda (prompt)
+ "Return a charset."
+ (intern
+ (completing-read
+ prompt
+ (mapcar (lambda (e) (list (symbol-name (car e))))
+ mm-mime-mule-charset-alist)
+ nil t))))
+ ;; `subst-char-in-string' is not available in XEmacs 21.4.
(subst-char-in-string
- . (lambda (from to string &optional inplace)
- ;; stolen (and renamed) from nnheader.el
- "Replace characters in STRING from FROM to TO.
+ . ,(lambda (from to string &optional inplace)
+ ;; stolen (and renamed) from nnheader.el
+ "Replace characters in STRING from FROM to TO.
Unless optional argument INPLACE is non-nil, return a new string."
- (let ((string (if inplace string (copy-sequence string)))
- (len (length string))
- (idx 0))
- ;; Replace all occurrences of FROM with TO.
- (while (< idx len)
- (when (= (aref string idx) from)
- (aset string idx to))
- (setq idx (1+ idx)))
- string)))
+ (let ((string (if inplace string (copy-sequence string)))
+ (len (length string))
+ (idx 0))
+ ;; Replace all occurrences of FROM with TO.
+ (while (< idx len)
+ (when (= (aref string idx) from)
+ (aset string idx to))
+ (setq idx (1+ idx)))
+ string)))
+ ;; `replace-in-string' is an XEmacs function, not available in Emacs.
(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)))
+ . ,(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' is an Emacs function, not available in XEmacs.
(string-as-unibyte . identity)
+ ;; `string-make-unibyte' is an Emacs function, not available in XEmacs.
(string-make-unibyte . identity)
;; string-as-multibyte often doesn't really do what you think it does.
;; Example:
;; (string-as-multibyte s) ~= (decode-coding-string s 'emacs-mule)
;; (string-to-multibyte s) ~= (decode-coding-string s 'binary)
;; (string-make-multibyte s) ~= (decode-coding-string s locale-coding-system)
+ ;; `string-as-multibyte' is an Emacs function, not available in XEmacs.
(string-as-multibyte . identity)
+ ;; `multibyte-string-p' is an Emacs function, not available in XEmacs.
(multibyte-string-p . ignore)
+ ;; `insert-byte' is available only in Emacs 23.1 or greater.
(insert-byte . insert-char)
+ ;; `multibyte-char-to-unibyte' is an Emacs function, not available
+ ;; in XEmacs.
(multibyte-char-to-unibyte . identity)
+ ;; `set-buffer-multibyte' is an Emacs function, not available in XEmacs.
(set-buffer-multibyte . ignore)
+ ;; `special-display-p' is an Emacs function, not available in XEmacs.
(special-display-p
- . (lambda (buffer-name)
- "Returns non-nil if a buffer named BUFFER-NAME gets a special frame."
- (and special-display-function
- (or (and (member buffer-name special-display-buffer-names) t)
- (cdr (assoc buffer-name special-display-buffer-names))
- (catch 'return
- (dolist (elem special-display-regexps)
- (and (stringp elem)
- (string-match elem buffer-name)
- (throw 'return t))
- (and (consp elem)
- (stringp (car elem))
- (string-match (car elem) buffer-name)
- (throw 'return (cdr elem))))))))))))
-
+ . ,(lambda (buffer-name)
+ "Returns non-nil if a buffer named BUFFER-NAME gets a special frame."
+ (and special-display-function
+ (or (and (member buffer-name special-display-buffer-names) t)
+ (cdr (assoc buffer-name special-display-buffer-names))
+ (catch 'return
+ (dolist (elem special-display-regexps)
+ (and (stringp elem)
+ (string-match elem buffer-name)
+ (throw 'return t))
+ (and (consp elem)
+ (stringp (car elem))
+ (string-match (car elem) buffer-name)
+ (throw 'return (cdr elem)))))))))
+ ;; `substring-no-properties' is available only in Emacs 22.1 or greater.
+ (substring-no-properties
+ . ,(lambda (string &optional from to)
+ "Return a substring of STRING, without text properties.
+It starts at index FROM and ending before TO.
+TO may be nil or omitted; then the substring runs to the end of STRING.
+If FROM is nil or omitted, the substring starts at the beginning of STRING.
+If FROM or TO is negative, it counts from the end.
+
+With one argument, just copy STRING without its properties."
+ (setq string (substring string (or from 0) to))
+ (set-text-properties 0 (length string) nil string)
+ string)))))
+
+;; `decode-coding-string', `encode-coding-string', `decode-coding-region'
+;; and `encode-coding-region' are available in Emacs and XEmacs built with
+;; the `file-coding' feature, but the XEmacs versions treat nil, that is
+;; given as the `coding-system' argument, as the `binary' coding system.
(eval-and-compile
(if (featurep 'xemacs)
(if (featurep 'file-coding)
- ;; Don't modify string if CODING-SYSTEM is nil.
(progn
(defun mm-decode-coding-string (str coding-system)
(if coding-system
(defalias 'mm-decode-coding-region 'decode-coding-region)
(defalias 'mm-encode-coding-region 'encode-coding-region)))
+;; `string-to-multibyte' is available only in Emacs 22.1 or greater.
(defalias 'mm-string-to-multibyte
(cond
((featurep 'xemacs)
'string-to-multibyte)
(t
(lambda (string)
- "Return a multibyte string with the same individual chars as string."
+ "Return a multibyte string with the same individual chars as STRING."
(mapconcat
(lambda (ch) (mm-string-as-multibyte (char-to-string ch)))
string "")))))
+;; `char-or-char-int-p' is an XEmacs function, not available in Emacs.
(eval-and-compile
(defalias 'mm-char-or-char-int-p
(cond
:group 'mime)
(put 'mm-charset-eval-alist 'risky-local-variable t)
+(defvar mm-charset-override-alist)
+
;; Note: this function has to be defined before `mm-charset-override-alist'
;; since it will use this function in order to determine its default value
;; when loading mm-util.elc.
projects / gnus / blobdiff