Merge remote-tracking branch 'origin/no-gnus'

[gnus] / lisp / mm-util.el

diff --git a/lisp/mm-util.el b/lisp/mm-util.el
index 435c3bb..4fb5ea7 100644 (file)
--- a/lisp/mm-util.el
+++ b/lisp/mm-util.el
@@ -1,6 +1,6 @@
 ;;; mm-util.el --- Utility functions for Mule and low level things
 
-;; Copyright (C) 1998-2011  Free Software Foundation, Inc.
+;; Copyright (C) 1998-2012  Free Software Foundation, Inc.
 
 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
 ;;     MORIOKA Tomohiko <morioka@jaist.ac.jp>
@@ -300,34 +300,6 @@ system object in XEmacs."
       ;; no-MULE XEmacs:
       (car (memq cs (mm-get-coding-system-list))))))
 
-(defun mm-codepage-setup (number &optional alias)
-  "Create a coding system cpNUMBER.
-The coding system is created using `codepage-setup'.  If ALIAS is
-non-nil, an alias is created and added to
-`mm-charset-synonym-alist'.  If ALIAS is a string, it's used as
-the alias.  Else windows-NUMBER is used."
-  (interactive
-   (let ((completion-ignore-case t)
-        (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 (gnus-completing-read "Setup DOS Codepage" candidates
-                                 t nil nil "437"))))
-  (when alias
-    (setq alias (if (stringp alias)
-                   (intern alias)
-                 (intern (format "windows-%s" number)))))
-  (let* ((cp (intern (format "cp%s" 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")))
-    (when (and alias
-              ;; Don't add alias if setup of cp failed.
-              (mm-coding-system-p cp))
-      (add-to-list 'mm-charset-synonym-alist (cons alias cp)))))
-
 (defvar mm-charset-synonym-alist
   `(
     ;; Not in XEmacs, but it's not a proper MIME charset anyhow.
@@ -376,6 +348,34 @@ the alias.  Else windows-NUMBER is used."
 
 See `mm-codepage-iso-8859-list' and `mm-codepage-ibm-list'.")
 
+(defun mm-codepage-setup (number &optional alias)
+  "Create a coding system cpNUMBER.
+The coding system is created using `codepage-setup'.  If ALIAS is
+non-nil, an alias is created and added to
+`mm-charset-synonym-alist'.  If ALIAS is a string, it's used as
+the alias.  Else windows-NUMBER is used."
+  (interactive
+   (let ((completion-ignore-case t)
+        (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 (gnus-completing-read "Setup DOS Codepage" candidates
+                                 t nil nil "437"))))
+  (when alias
+    (setq alias (if (stringp alias)
+                   (intern alias)
+                 (intern (format "windows-%s" number)))))
+  (let* ((cp (intern (format "cp%s" 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")))
+    (when (and alias
+              ;; Don't add alias if setup of cp failed.
+              (mm-coding-system-p cp))
+      (add-to-list 'mm-charset-synonym-alist (cons alias cp)))))
+
 (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
@@ -424,7 +424,7 @@ corresponding number of an iso-8859 charset."
   ;; Cf. http://thread.gmane.org/v9lkng5nwy.fsf@marauder.physik.uni-ulm.de
   "List of IBM codepage numbers.
 
-The codepage mappings slighly differ between IBM and other vendors.
+The codepage mappings slightly differ between IBM and other vendors.
 See \"ftp://ftp.unicode.org/Public/MAPPINGS/VENDORS/IBM/README.TXT\".
 
 If an element is a number corresponding to a supported windows
@@ -550,7 +550,8 @@ is not available."
         (let ((cs (cdr (assq charset mm-charset-override-alist))))
           (and cs (mm-coding-system-p cs) cs))))
    ;; ascii
-   ((eq charset 'us-ascii)
+   ((or (eq charset 'us-ascii)
+       (string-match "ansi.x3.4" (symbol-name charset)))
     'ascii)
    ;; Check to see whether we can handle this charset.  (This depends
    ;; on there being some coding system matching each `mime-charset'
@@ -955,7 +956,7 @@ This is a no-op in XEmacs."
 
 (defun mm-charset-after (&optional pos)
   "Return charset of a character in current buffer at position POS.
-If POS is nil, it defauls to the current point.
+If POS is nil, it defaults to the current point.
 If POS is out of range, the value is nil.
 If the charset is `composition', return the actual one."
   (let ((char (char-after pos)) charset)
@@ -1591,7 +1592,7 @@ gzip, bzip2, etc. are allowed."
   (unless filename
     (setq filename buffer-file-name))
   (save-excursion
-    (let ((decomp (unless ;; No worth to examine charset of tar files.
+    (let ((decomp (unless ;; Not worth it to examine charset of tar files.
                      (and filename
                           (string-match
                            "\\.\\(?:tar\\.[^.]+\\|tbz\\|tgz\\)\\'"