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[gnus] / lisp / mm-util.el

diff --git a/lisp/mm-util.el b/lisp/mm-util.el
index c1fb1a6..b16e1d9 100644 (file)
--- a/lisp/mm-util.el
+++ b/lisp/mm-util.el
@@ -1,7 +1,7 @@
 ;;; mm-util.el --- Utility functions for Mule and low level things
 
 ;;; mm-util.el --- Utility functions for Mule and low level things
 

-;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009 Free Software Foundation, Inc.
+;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
+;;   2007, 2008, 2009, 2010  Free Software Foundation, Inc.

 
 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
 ;;     MORIOKA Tomohiko <morioka@jaist.ac.jp>
 
 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
 ;;     MORIOKA Tomohiko <morioka@jaist.ac.jp>


@@ -24,7 +24,7 @@
 
 ;;; Code:
 
 
 ;;; Code:
 

-;; For Emacs < 22.2.
+;; For Emacs <22.2 and XEmacs.

 (eval-and-compile
   (unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
 
 (eval-and-compile
   (unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
 


@@ -68,11 +68,11 @@
       . ,(lambda (prompt)
           "Return a charset."
           (intern
       . ,(lambda (prompt)
           "Return a charset."
           (intern

-           (completing-read
+           (gnus-completing-read

             prompt
             prompt

-            (mapcar (lambda (e) (list (symbol-name (car e))))
+            (mapcar (lambda (e) (symbol-name (car e)))

                     mm-mime-mule-charset-alist)
                     mm-mime-mule-charset-alist)

-            nil t))))
+            t))))

      ;; `subst-char-in-string' is not available in XEmacs 21.4.
      (subst-char-in-string
       . ,(lambda (from to string &optional inplace)
      ;; `subst-char-in-string' is not available in XEmacs 21.4.
      (subst-char-in-string
       . ,(lambda (from to string &optional inplace)


@@ -281,8 +281,8 @@ to the contents of the accessible portion of the buffer."
        'read-coding-system))
      (t (lambda (prompt &optional default-coding-system)
          "Prompt the user for a coding system."
        'read-coding-system))
      (t (lambda (prompt &optional default-coding-system)
          "Prompt the user for a coding system."

-         (completing-read
-          prompt (mapcar (lambda (s) (list (symbol-name (car s))))
+         (gnus-completing-read
+          prompt (mapcar (lambda (s) (symbol-name (car s)))

                          mm-mime-mule-charset-alist)))))))
 
 (defvar mm-coding-system-list nil)
                          mm-mime-mule-charset-alist)))))))
 
 (defvar mm-coding-system-list nil)


@@ -315,9 +315,9 @@ the alias.  Else windows-NUMBER is used."
         (candidates (if (fboundp 'cp-supported-codepages)
                         (cp-supported-codepages)
                       ;; Removed in Emacs 23 (unicode), so signal an error:
         (candidates (if (fboundp 'cp-supported-codepages)
                         (cp-supported-codepages)
                       ;; Removed in Emacs 23 (unicode), so signal an error:

-                      (error "`codepage-setup' not present in this Emacs version."))))
-     (list (completing-read "Setup DOS Codepage: (default 437) " candidates
-                           nil t nil nil "437"))))
+                      (error "`codepage-setup' not present in this Emacs version"))))
+     (list (gnus-completing-read "Setup DOS Codepage" candidates
+                                 t nil nil "437"))))

   (when alias
     (setq alias (if (stringp alias)
                    (intern alias)
   (when alias
     (setq alias (if (stringp alias)
                    (intern alias)


@@ -326,7 +326,7 @@ the alias.  Else windows-NUMBER is used."
     (unless (mm-coding-system-p cp)
       (if (fboundp 'codepage-setup)    ; silence compiler
          (codepage-setup number)
     (unless (mm-coding-system-p cp)
       (if (fboundp 'codepage-setup)    ; silence compiler
          (codepage-setup number)

-       (error "`codepage-setup' not present in this Emacs version.")))
+       (error "`codepage-setup' not present in this Emacs version")))

     (when (and alias
               ;; Don't add alias if setup of cp failed.
               (mm-coding-system-p cp))
     (when (and alias
               ;; Don't add alias if setup of cp failed.
               (mm-coding-system-p cp))


@@ -383,8 +383,7 @@ See `mm-codepage-iso-8859-list' and `mm-codepage-ibm-list'.")
 (defcustom mm-codepage-iso-8859-list
   (list 1250 ;; Windows-1250 is a variant of Latin-2 heavily used by Microsoft
        ;; Outlook users in Czech republic.  Use this to allow reading of
 (defcustom mm-codepage-iso-8859-list
   (list 1250 ;; Windows-1250 is a variant of Latin-2 heavily used by Microsoft
        ;; Outlook users in Czech republic.  Use this to allow reading of

-       ;; their e-mails.  cp1250 should be defined by M-x codepage-setup
-       ;; (Emacs 21).
+       ;; their e-mails.

        '(1252 . 1) ;; Windows-1252 is a superset of iso-8859-1 (West
                    ;; Europe).  See also `gnus-article-dumbquotes-map'.
        '(1254 . 9) ;; Windows-1254 is a superset of iso-8859-9 (Turkish).
        '(1252 . 1) ;; Windows-1252 is a superset of iso-8859-1 (West
                    ;; Europe).  See also `gnus-article-dumbquotes-map'.
        '(1254 . 9) ;; Windows-1254 is a superset of iso-8859-9 (Turkish).


@@ -494,8 +493,8 @@ Unless LIST is given, `mm-codepage-ibm-list' is used."
 (defcustom mm-charset-eval-alist
   (if (featurep 'xemacs)
       nil ;; I don't know what would be useful for XEmacs.
 (defcustom mm-charset-eval-alist
   (if (featurep 'xemacs)
       nil ;; I don't know what would be useful for XEmacs.

-    '(;; Emacs 21 offers 1250 1251 1253 1257.  Emacs 22 provides autoloads for
-      ;; 1250-1258 (i.e. `mm-codepage-setup' does nothing).
+    '(;; Emacs 22 provides autoloads for 1250-1258
+      ;; (i.e. `mm-codepage-setup' does nothing).

       (windows-1250 . (mm-codepage-setup 1250 t))
       (windows-1251 . (mm-codepage-setup 1251 t))
       (windows-1253 . (mm-codepage-setup 1253 t))
       (windows-1250 . (mm-codepage-setup 1250 t))
       (windows-1251 . (mm-codepage-setup 1251 t))
       (windows-1253 . (mm-codepage-setup 1253 t))


@@ -566,6 +565,9 @@ is not available."
 ;;;     (eq charset (coding-system-get charset 'mime-charset))
         )
     charset)
 ;;;     (eq charset (coding-system-get charset 'mime-charset))
         )
     charset)

+   ;; Use coding system Emacs knows.
+   ((and (fboundp 'coding-system-from-name)
+        (coding-system-from-name charset)))

    ;; Eval expressions from `mm-charset-eval-alist'
    ((let* ((el (assq charset mm-charset-eval-alist))
           (cs (car el))
    ;; Eval expressions from `mm-charset-eval-alist'
    ((let* ((el (assq charset mm-charset-eval-alist))
           (cs (car el))


@@ -677,7 +679,7 @@ superset of iso-8859-1."
   "100% binary coding system.")
 
 (defvar mm-text-coding-system
   "100% binary coding system.")
 
 (defvar mm-text-coding-system

-  (or (if (memq system-type '(windows-nt ms-dos ms-windows))
+  (or (if (memq system-type '(windows-nt ms-dos))

          (and (mm-coding-system-p 'raw-text-dos) 'raw-text-dos)
        (and (mm-coding-system-p 'raw-text) 'raw-text))
       mm-binary-coding-system)
          (and (mm-coding-system-p 'raw-text-dos) 'raw-text-dos)
        (and (mm-coding-system-p 'raw-text) 'raw-text))
       mm-binary-coding-system)


@@ -689,12 +691,12 @@ superset of iso-8859-1."
 (defvar mm-auto-save-coding-system
   (cond
    ((mm-coding-system-p 'utf-8-emacs)  ; Mule 7
 (defvar mm-auto-save-coding-system
   (cond
    ((mm-coding-system-p 'utf-8-emacs)  ; Mule 7

-    (if (memq system-type '(windows-nt ms-dos ms-windows))
+    (if (memq system-type '(windows-nt ms-dos))

        (if (mm-coding-system-p 'utf-8-emacs-dos)
            'utf-8-emacs-dos mm-binary-coding-system)
       'utf-8-emacs))
    ((mm-coding-system-p 'emacs-mule)
        (if (mm-coding-system-p 'utf-8-emacs-dos)
            'utf-8-emacs-dos mm-binary-coding-system)
       'utf-8-emacs))
    ((mm-coding-system-p 'emacs-mule)

-    (if (memq system-type '(windows-nt ms-dos ms-windows))
+    (if (memq system-type '(windows-nt ms-dos))

        (if (mm-coding-system-p 'emacs-mule-dos)
            'emacs-mule-dos mm-binary-coding-system)
       'emacs-mule))
        (if (mm-coding-system-p 'emacs-mule-dos)
            'emacs-mule-dos mm-binary-coding-system)
       'emacs-mule))


@@ -840,14 +842,16 @@ Valid elements include:
   "A table of the difference character between ISO-8859-X and ISO-8859-15.")
 
 (defcustom mm-coding-system-priorities
   "A table of the difference character between ISO-8859-X and ISO-8859-15.")
 
 (defcustom mm-coding-system-priorities

-  (if (boundp 'current-language-environment)
-      (let ((lang (symbol-value 'current-language-environment)))
-       (cond (;; In XEmacs 21.5 it may be the one like "Japanese (UTF-8)".
-              (string-match "\\`Japanese" lang)
-              ;; 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)))))
+  (let ((lang (if (boundp 'current-language-environment)
+                 (symbol-value 'current-language-environment))))
+    (cond (;; XEmacs without Mule but with `file-coding'.
+          (not lang) nil)
+         ;; In XEmacs 21.5 it may be the one like "Japanese (UTF-8)".
+         ((string-match "\\`Japanese" lang)
+          ;; 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.
   "Preferred coding systems for encoding outgoing messages.
 
 More than one suitable coding system may be found for some text.


@@ -897,26 +901,20 @@ mail with multiple parts is preferred to sending a Unicode one.")
       out)))
 
 (eval-and-compile
       out)))
 
 (eval-and-compile

-  (defvar mm-emacs-mule (and (not (featurep 'xemacs))
-                            (boundp 'default-enable-multibyte-characters)
-                            default-enable-multibyte-characters
-                            (fboundp 'set-buffer-multibyte))
-    "True in Emacs with Mule.")
-
-  (if mm-emacs-mule
-      (defun mm-enable-multibyte ()
-       "Set the multibyte flag of the current buffer.
+  (if (featurep 'xemacs)
+      (defalias 'mm-enable-multibyte 'ignore)
+    (defun mm-enable-multibyte ()
+      "Set the multibyte flag of the current buffer.

 Only do this if the default value of `enable-multibyte-characters' is
 non-nil.  This is a no-op in XEmacs."
 Only do this if the default value of `enable-multibyte-characters' is
 non-nil.  This is a no-op in XEmacs."

-       (set-buffer-multibyte 'to))
-    (defalias 'mm-enable-multibyte 'ignore))
+      (set-buffer-multibyte t)))

 
 

-  (if mm-emacs-mule
-      (defun mm-disable-multibyte ()
-       "Unset the multibyte flag of in the current buffer.
+  (if (featurep 'xemacs)
+      (defalias 'mm-disable-multibyte 'ignore)
+    (defun mm-disable-multibyte ()
+      "Unset the multibyte flag of in the current buffer.

 This is a no-op in XEmacs."
 This is a no-op in XEmacs."

-       (set-buffer-multibyte nil))
-    (defalias 'mm-disable-multibyte 'ignore)))
+      (set-buffer-multibyte nil))))

 
 (defun mm-preferred-coding-system (charset)
   ;; A typo in some Emacs versions.
 
 (defun mm-preferred-coding-system (charset)
   ;; A typo in some Emacs versions.


@@ -967,7 +965,6 @@ If the charset is `composition', return the actual one."
   (if (eq charset 'unknown)
       (error "The message contains non-printable characters, please use attachment"))
   (if (and (fboundp 'coding-system-get) (fboundp 'get-charset-property))
   (if (eq charset 'unknown)
       (error "The message contains non-printable characters, please use attachment"))
   (if (and (fboundp 'coding-system-get) (fboundp 'get-charset-property))

-      ;; This exists in Emacs 20.

       (or
        (and (mm-preferred-coding-system charset)
            (or (coding-system-get
       (or
        (and (mm-preferred-coding-system charset)
            (or (coding-system-get


@@ -1011,8 +1008,8 @@ This is a compatibility function for Emacsen without `delete-dups'."
   "Return non-nil if the session is multibyte.
 This affects whether coding conversion should be attempted generally."
   (if (featurep 'mule)
   "Return non-nil if the session is multibyte.
 This affects whether coding conversion should be attempted generally."
   (if (featurep 'mule)

-      (if (boundp 'default-enable-multibyte-characters)
-         default-enable-multibyte-characters
+      (if (boundp 'enable-multibyte-characters)
+         (default-value 'enable-multibyte-characters)

        t)))
 
 (defun mm-iso-8859-x-to-15-region (&optional b e)
        t)))
 
 (defun mm-iso-8859-x-to-15-region (&optional b e)


@@ -1225,28 +1222,23 @@ Use multibyte mode for this."
 
 (defmacro mm-with-unibyte-current-buffer (&rest forms)
   "Evaluate FORMS with current buffer temporarily made unibyte.
 
 (defmacro mm-with-unibyte-current-buffer (&rest forms)
   "Evaluate FORMS with current buffer temporarily made unibyte.

-Also bind `default-enable-multibyte-characters' to nil.
-Equivalent to `progn' in XEmacs
-
-NOTE: Use this macro with caution in multibyte buffers (it is not
-worth using this macro in unibyte buffers of course).  Use of
-`(set-buffer-multibyte t)', which is run finally, is generally
-harmful since it is likely to modify existing data in the buffer.
-For instance, it converts \"\\300\\255\" into \"\\255\" in
-Emacs 23 (unicode)."
-  (let ((multibyte (make-symbol "multibyte"))
-       (buffer (make-symbol "buffer")))
-    `(if mm-emacs-mule
-        (let ((,multibyte enable-multibyte-characters)
-              (,buffer (current-buffer)))
-          (unwind-protect
-              (let (default-enable-multibyte-characters)
-                (set-buffer-multibyte nil)
-                ,@forms)
-            (set-buffer ,buffer)
-            (set-buffer-multibyte ,multibyte)))
-       (let (default-enable-multibyte-characters)
-        ,@forms))))
+Equivalent to `progn' in XEmacs.
+
+Note: We recommend not using this macro any more; there should be
+better ways to do a similar thing.  The previous version of this macro
+bound the default value of `enable-multibyte-characters' to nil while
+evaluating FORMS but it is no longer done.  So, some programs assuming
+it if any may malfunction."
+  (if (featurep 'xemacs)
+      `(progn ,@forms)
+    (let ((multibyte (make-symbol "multibyte")))
+      `(let ((,multibyte enable-multibyte-characters))
+        (when ,multibyte
+          (set-buffer-multibyte nil))
+        (prog1
+            (progn ,@forms)
+          (when ,multibyte
+            (set-buffer-multibyte t)))))))

 (put 'mm-with-unibyte-current-buffer 'lisp-indent-function 0)
 (put 'mm-with-unibyte-current-buffer 'edebug-form-spec '(body))
 
 (put 'mm-with-unibyte-current-buffer 'lisp-indent-function 0)
 (put 'mm-with-unibyte-current-buffer 'edebug-form-spec '(body))
 


@@ -1306,24 +1298,24 @@ to advanced Emacs features, such as file-name-handlers, format decoding,
 `find-file-hooks', etc.
 If INHIBIT is non-nil, inhibit `mm-inhibit-file-name-handlers'.
   This function ensures that none of these modifications will take place."
 `find-file-hooks', etc.
 If INHIBIT is non-nil, inhibit `mm-inhibit-file-name-handlers'.
   This function ensures that none of these modifications will take place."

-  (let* ((format-alist nil)
-        (auto-mode-alist (if inhibit nil (mm-auto-mode-alist)))
-        (default-major-mode 'fundamental-mode)
-        (enable-local-variables nil)
-        (after-insert-file-functions nil)
-        (enable-local-eval nil)
-        (inhibit-file-name-operation (if inhibit
-                                         'insert-file-contents
-                                       inhibit-file-name-operation))
-        (inhibit-file-name-handlers
-         (if inhibit
-             (append mm-inhibit-file-name-handlers
-                     inhibit-file-name-handlers)
-           inhibit-file-name-handlers))
-        (ffh (if (boundp 'find-file-hook)
-                 'find-file-hook
-               'find-file-hooks))
-        (val (symbol-value ffh)))
+  (letf* ((format-alist nil)
+          (auto-mode-alist (if inhibit nil (mm-auto-mode-alist)))
+          ((default-value 'major-mode) 'fundamental-mode)
+          (enable-local-variables nil)
+          (after-insert-file-functions nil)
+          (enable-local-eval nil)
+          (inhibit-file-name-operation (if inhibit
+                                           'insert-file-contents
+                                         inhibit-file-name-operation))
+          (inhibit-file-name-handlers
+           (if inhibit
+               (append mm-inhibit-file-name-handlers
+                       inhibit-file-name-handlers)
+             inhibit-file-name-handlers))
+          (ffh (if (boundp 'find-file-hook)
+                   'find-file-hook
+                 'find-file-hooks))
+          (val (symbol-value ffh)))

     (set ffh nil)
     (unwind-protect
        (insert-file-contents filename visit beg end replace)
     (set ffh nil)
     (unwind-protect
        (insert-file-contents filename visit beg end replace)


@@ -1435,16 +1427,23 @@ If SUFFIX is non-nil, add that at the end of the file name."
        ;; Reset the umask.
        (set-default-file-modes umask)))))
 
        ;; Reset the umask.
        (set-default-file-modes umask)))))
 

+(defvar mm-image-load-path-cache nil)
+

 (defun mm-image-load-path (&optional package)
 (defun mm-image-load-path (&optional package)

-  (let (dir result)
-    (dolist (path load-path (nreverse result))
-      (when (and path
-                (file-directory-p
-                 (setq dir (concat (file-name-directory
-                                    (directory-file-name path))
-                                   "etc/images/" (or package "gnus/")))))
-       (push dir result))
-      (push path result))))
+  (if (and mm-image-load-path-cache
+          (equal load-path (car mm-image-load-path-cache)))
+      (cdr mm-image-load-path-cache)
+    (let (dir result)
+      (dolist (path load-path)
+       (when (and path
+                  (file-directory-p
+                   (setq dir (concat (file-name-directory
+                                      (directory-file-name path))
+                                     "etc/images/" (or package "gnus/")))))
+         (push dir result)))
+      (setq result (nreverse result)
+           mm-image-load-path-cache (cons load-path result))
+      result)))

 
 ;; Fixme: This doesn't look useful where it's used.
 (if (fboundp 'detect-coding-region)
 
 ;; Fixme: This doesn't look useful where it's used.
 (if (fboundp 'detect-coding-region)


@@ -1538,14 +1537,13 @@ decompressed data.  The buffer's multibyteness must be turned off."
                                       prog t (list t err-file) nil args)
                                jka-compr-acceptable-retval-list)
                    (erase-buffer)
                                       prog t (list t err-file) nil args)
                                jka-compr-acceptable-retval-list)
                    (erase-buffer)

-                   (insert (mapconcat
-                            'identity
-                            (delete "" (split-string
-                                        (prog2
-                                            (insert-file-contents err-file)
-                                            (buffer-string)
-                                          (erase-buffer))))
-                            " ")
+                   (insert (mapconcat 'identity
+                                      (split-string
+                                       (prog2
+                                           (insert-file-contents err-file)
+                                           (buffer-string)
+                                         (erase-buffer)) t)
+                                      " ")

                            "\n")
                    (setq err-msg
                          (format "Error while executing \"%s %s < %s\""
                            "\n")
                    (setq err-msg
                          (format "Error while executing \"%s %s < %s\""


@@ -1555,7 +1553,7 @@ decompressed data.  The buffer's multibyteness must be turned off."
              (error
               (setq err-msg (error-message-string err)))))
          (when (file-exists-p err-file)
              (error
               (setq err-msg (error-message-string err)))))
          (when (file-exists-p err-file)

-           (ignore-errors (jka-compr-delete-temp-file err-file)))
+           (ignore-errors (delete-file err-file)))

          (when inplace
            (unless err-msg
              (delete-region (point-min) (point-max))
          (when inplace
            (unless err-msg
              (delete-region (point-min) (point-max))


@@ -1588,8 +1586,8 @@ gzip, bzip2, etc. are allowed."
                            filename))
                    (mm-decompress-buffer filename nil t))))
       (when decomp
                            filename))
                    (mm-decompress-buffer filename nil t))))
       (when decomp

-       (set-buffer (let (default-enable-multibyte-characters)
-                     (generate-new-buffer " *temp*")))
+       (set-buffer (generate-new-buffer " *temp*"))
+        (mm-disable-multibyte)

        (insert decomp)
        (setq filename (file-name-sans-extension filename)))
       (goto-char (point-min))
        (insert decomp)
        (setq filename (file-name-sans-extension filename)))
       (goto-char (point-min))


@@ -1659,5 +1657,4 @@ gzip, bzip2, etc. are allowed."
 
 (provide 'mm-util)
 
 
 (provide 'mm-util)
 

-;; arch-tag: 94dc5388-825d-4fd1-bfa5-2100aa351238

 ;;; mm-util.el ends here
 ;;; mm-util.el ends here