Convert consecutive FSF copyright years to ranges.

[gnus] / lisp / rfc2047.el

diff --git a/lisp/rfc2047.el b/lisp/rfc2047.el
index 45f251d..e82192b 100644 (file)
--- a/lisp/rfc2047.el
+++ b/lisp/rfc2047.el
@@ -1,26 +1,23 @@
 ;;; rfc2047.el --- functions for encoding and decoding rfc2047 messages
 
 ;;; rfc2047.el --- functions for encoding and decoding rfc2047 messages
 

-;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008 Free Software Foundation, Inc.
+;; Copyright (C) 1998-2011  Free Software Foundation, Inc.

 
 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
 ;;     MORIOKA Tomohiko <morioka@jaist.ac.jp>
 ;; This file is part of GNU Emacs.
 
 
 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
 ;;     MORIOKA Tomohiko <morioka@jaist.ac.jp>
 ;; This file is part of GNU Emacs.
 

-;; GNU Emacs is free software; you can redistribute it and/or modify
+;; 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
 ;; it under the terms of the GNU General Public License as published by

-;; the Free Software Foundation; either version 3, or (at your option)
-;; any later version.
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.

 
 ;; GNU Emacs is distributed in the hope that it will be useful,
 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
 
 ;; GNU Emacs is distributed in the hope that it will be useful,
 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of

-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.         See the
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 ;; GNU General Public License for more details.
 
 ;; You should have received a copy of the GNU General Public License
 ;; GNU General Public License for more details.
 
 ;; 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., 51 Franklin Street, Fifth Floor,
-;; Boston, MA 02110-1301, USA.
+;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.

 
 ;;; Commentary:
 
 
 ;;; Commentary:
 


@@ -33,7 +30,6 @@
   (require 'cl))
 (defvar message-posting-charset)
 
   (require 'cl))
 (defvar message-posting-charset)
 

-(require 'qp)

 (require 'mm-util)
 (require 'ietf-drums)
 ;; Fixme: Avoid this (used for mail-parse-charset) mm dependence on gnus.
 (require 'mm-util)
 (require 'ietf-drums)
 ;; Fixme: Avoid this (used for mail-parse-charset) mm dependence on gnus.


@@ -284,8 +280,8 @@ Should be called narrowed to the head of the message."
                (rfc2047-encode-region (point) (point-max))))
             ((eq method 'default)
              (if (and (featurep 'mule)
                (rfc2047-encode-region (point) (point-max))))
             ((eq method 'default)
              (if (and (featurep 'mule)

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

                       mail-parse-charset)
                  (mm-encode-coding-region (point) (point-max)
                                           mail-parse-charset)))
                       mail-parse-charset)
                  (mm-encode-coding-region (point) (point-max)
                                           mail-parse-charset)))


@@ -293,7 +289,7 @@ Should be called narrowed to the head of the message."
             ;; 8-bit names.  The group name mail copy just got
             ;; unconditionally encoded.  Previously, it would ask
             ;; whether to encode, which was quite confusing for the
             ;; 8-bit names.  The group name mail copy just got
             ;; unconditionally encoded.  Previously, it would ask
             ;; whether to encode, which was quite confusing for the

-            ;; user.  If the new behaviour is wrong, tell me. I have
+            ;; user.  If the new behavior is wrong, tell me. I have

             ;; left the old code commented out below.
             ;; -- Per Abrahamsen <abraham@dina.kvl.dk> Date: 2001-10-07.
             ;; Modified by Dave Love, with the commented-out code changed
             ;; left the old code commented out below.
             ;; -- Per Abrahamsen <abraham@dina.kvl.dk> Date: 2001-10-07.
             ;; Modified by Dave Love, with the commented-out code changed


@@ -311,8 +307,8 @@ Should be called narrowed to the head of the message."
 ;;;            (error "Cannot send unencoded text")))
             ((mm-coding-system-p method)
              (if (or (and (featurep 'mule)
 ;;;            (error "Cannot send unencoded text")))
             ((mm-coding-system-p method)
              (if (or (and (featurep 'mule)

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

                      (featurep 'file-coding))
                  (mm-encode-coding-region (point) (point-max) method)))
             ;; Hm.
                      (featurep 'file-coding))
                  (mm-encode-coding-region (point) (point-max) method)))
             ;; Hm.


@@ -345,17 +341,13 @@ The buffer may be narrowed."
 (defconst rfc2047-syntax-table
   ;; (make-char-table 'syntax-table '(2)) only works in Emacs.
   (let ((table (make-syntax-table)))
 (defconst rfc2047-syntax-table
   ;; (make-char-table 'syntax-table '(2)) only works in Emacs.
   (let ((table (make-syntax-table)))

-    ;; The following is done to work for setting all elements of the table
-    ;; in Emacs 21-23 and XEmacs; it appears to be the cleanest way.
+    ;; The following is done to work for setting all elements of the table;
+    ;; it appears to be the cleanest way.

     ;; Play safe and don't assume the form of the word syntax entry --
     ;; copy it from ?a.
     ;; Play safe and don't assume the form of the word syntax entry --
     ;; copy it from ?a.

-    (if (fboundp 'set-char-table-range)        ; Emacs
-       (funcall (intern "set-char-table-range")
-                table t (aref (standard-syntax-table) ?a))
-      (if (fboundp 'put-char-table)
-         (if (fboundp 'get-char-table) ; warning avoidance
-             (put-char-table t (get-char-table ?a (standard-syntax-table))
-                             table))))
+    (if (featurep 'xemacs)
+       (put-char-table t (get-char-table ?a (standard-syntax-table)) table)
+      (set-char-table-range table t (aref (standard-syntax-table) ?a)))

     (modify-syntax-entry ?\\ "\\" table)
     (modify-syntax-entry ?\" "\"" table)
     (modify-syntax-entry ?\( "(" table)
     (modify-syntax-entry ?\\ "\\" table)
     (modify-syntax-entry ?\" "\"" table)
     (modify-syntax-entry ?\( "(" table)


@@ -430,7 +422,7 @@ Dynamically bind `rfc2047-encoding-type' to change that."
                      ;; since encoded words can't occur in quotes.
                      (progn
                        (goto-char end)
                      ;; since encoded words can't occur in quotes.
                      (progn
                        (goto-char end)

-                       (delete-backward-char 1)
+                       (delete-char -1)

                        (goto-char start)
                        (delete-char 1)
                        (when last-encoded
                        (goto-char start)
                        (delete-char 1)
                        (when last-encoded


@@ -658,6 +650,9 @@ should not change this value.")
 Point moves to the end of the region."
   (let ((mime-charset (or (mm-find-mime-charset-region b e) (list 'us-ascii)))
        cs encoding tail crest eword)
 Point moves to the end of the region."
   (let ((mime-charset (or (mm-find-mime-charset-region b e) (list 'us-ascii)))
        cs encoding tail crest eword)

+    ;; Use utf-8 as a last resort if determining charset of text fails.
+    (if (memq nil mime-charset)
+       (setq mime-charset (list 'utf-8)))

     (cond ((> (length mime-charset) 1)
           (error "Can't rfc2047-encode `%s'"
                  (buffer-substring-no-properties b e)))
     (cond ((> (length mime-charset) 1)
           (error "Can't rfc2047-encode `%s'"
                  (buffer-substring-no-properties b e)))


@@ -829,6 +824,8 @@ Point moves to the end of the region."
   "Base64-encode the header contained in STRING."
   (base64-encode-string string t))
 
   "Base64-encode the header contained in STRING."
   (base64-encode-string string t))
 

+(autoload 'quoted-printable-encode-region "qp")
+

 (defun rfc2047-q-encode-string (string)
   "Quoted-printable-encode the header in STRING."
   (mm-with-unibyte-buffer
 (defun rfc2047-q-encode-string (string)
   "Quoted-printable-encode the header in STRING."
   (mm-with-unibyte-buffer


@@ -849,18 +846,8 @@ Point moves to the end of the region."
 
 (defun rfc2047-encode-parameter (param value)
   "Return and PARAM=VALUE string encoded in the RFC2047-like style.
 
 (defun rfc2047-encode-parameter (param value)
   "Return and PARAM=VALUE string encoded in the RFC2047-like style.

-This is a replacement for the `rfc2231-encode-string' function.
-
-When attaching files as MIME parts, we should use the RFC2231 encoding
-to specify the file names containing non-ASCII characters.  However,
-many mail softwares don't support it in practice and recipients won't
-be able to extract files with correct names.  Instead, the RFC2047-like
-encoding is acceptable generally.  This function provides the very
-RFC2047-like encoding, resigning to such a regrettable trend.  To use
-it, put the following line in your ~/.gnus.el file:
-
-\(defalias 'mail-header-encode-parameter 'rfc2047-encode-parameter)
-"
+This is a substitution for the `rfc2231-encode-string' function, that
+is the standard but many mailers don't support it."

   (let ((rfc2047-encoding-type 'mime)
        (rfc2047-encode-max-chars nil))
     (rfc2045-encode-string param (rfc2047-encode-string value))))
   (let ((rfc2047-encoding-type 'mime)
        (rfc2047-encode-max-chars nil))
     (rfc2045-encode-string param (rfc2047-encode-string value))))


@@ -898,15 +885,19 @@ them.")
                  (goto-char beg)
                  (while (search-forward "\\" nil 'move)
                    (unless (memq (char-after) '(?\"))
                  (goto-char beg)
                  (while (search-forward "\\" nil 'move)
                    (unless (memq (char-after) '(?\"))

-                     (delete-backward-char 1))
+                     (delete-char -1))

                    (forward-char)))
                (forward-char))
            (error
             (goto-char beg))))))))
 
                    (forward-char)))
                (forward-char))
            (error
             (goto-char beg))))))))
 

-(defun rfc2047-charset-to-coding-system (charset)
+(defun rfc2047-charset-to-coding-system (charset &optional allow-override)

   "Return coding-system corresponding to MIME CHARSET.
   "Return coding-system corresponding to MIME CHARSET.

-If your Emacs implementation can't decode CHARSET, return nil."
+If your Emacs implementation can't decode CHARSET, return nil.
+
+If allow-override is given, use `mm-charset-override-alist' to
+map undesired charset names to their replacement.  This should
+only be used for decoding, not for encoding."

   (when (stringp charset)
     (setq charset (intern (downcase charset))))
   (when (or (not charset)
   (when (stringp charset)
     (setq charset (intern (downcase charset))))
   (when (or (not charset)


@@ -914,7 +905,7 @@ If your Emacs implementation can't decode CHARSET, return nil."
            (memq 'gnus-all mail-parse-ignored-charsets)
            (memq charset mail-parse-ignored-charsets))
     (setq charset mail-parse-charset))
            (memq 'gnus-all mail-parse-ignored-charsets)
            (memq charset mail-parse-ignored-charsets))
     (setq charset mail-parse-charset))

-  (let ((cs (mm-charset-to-coding-system charset)))
+  (let ((cs (mm-charset-to-coding-system charset nil allow-override)))

     (cond ((eq cs 'ascii)
           (setq cs (or (mm-charset-to-coding-system mail-parse-charset)
                        'raw-text)))
     (cond ((eq cs 'ascii)
           (setq cs (or (mm-charset-to-coding-system mail-parse-charset)
                        'raw-text)))


@@ -927,6 +918,8 @@ If your Emacs implementation can't decode CHARSET, return nil."
        'raw-text
       cs)))
 
        'raw-text
       cs)))
 

+(autoload 'quoted-printable-decode-string "qp")
+

 (defun rfc2047-decode-encoded-words (words)
   "Decode successive encoded-words in WORDS and return a decoded string.
 Each element of WORDS looks like (CHARSET ENCODING ENCODED-TEXT
 (defun rfc2047-decode-encoded-words (words)
   "Decode successive encoded-words in WORDS and return a decoded string.
 Each element of WORDS looks like (CHARSET ENCODING ENCODED-TEXT


@@ -935,7 +928,7 @@ ENCODED-WORD)."
     (while words
       (setq word (pop words))
       (if (and (setq cs (rfc2047-charset-to-coding-system
     (while words
       (setq word (pop words))
       (if (and (setq cs (rfc2047-charset-to-coding-system

-                        (setq charset (car word))))
+                        (setq charset (car word)) t))

               (condition-case code
                   (cond ((char-equal ?B (nth 1 word))
                          (setq text (base64-decode-string
               (condition-case code
                   (cond ((char-equal ?B (nth 1 word))
                          (setq text (base64-decode-string


@@ -1024,6 +1017,7 @@ other than `\"' and `\\' in quoted strings."
            ;; things essentially must not be there.
            (while (re-search-forward "[\n\r]+" nil t)
              (replace-match " "))
            ;; things essentially must not be there.
            (while (re-search-forward "[\n\r]+" nil t)
              (replace-match " "))

+           (setq end (point-max))

            ;; Quote decoded words if there are special characters
            ;; which might violate RFC2822.
            (when (and rfc2047-quote-decoded-words-containing-tspecials
            ;; Quote decoded words if there are special characters
            ;; which might violate RFC2822.
            (when (and rfc2047-quote-decoded-words-containing-tspecials


@@ -1033,17 +1027,22 @@ other than `\"' and `\\' in quoted strings."
                         (when regexp
                           (save-restriction
                             (widen)
                         (when regexp
                           (save-restriction
                             (widen)

-                            (beginning-of-line)
-                            (while (and (memq (char-after) '(?  ?\t))
-                                        (zerop (forward-line -1))))
-                            (looking-at regexp)))))
+                            (and
+                             ;; Don't quote words if already quoted.
+                             (not (and (eq (char-before e) ?\")
+                                       (eq (char-after end) ?\")))
+                             (progn
+                               (beginning-of-line)
+                               (while (and (memq (char-after) '(?  ?\t))
+                                           (zerop (forward-line -1))))
+                               (looking-at regexp)))))))

              (let (quoted)
                (goto-char e)
                (skip-chars-forward " \t")
                (setq start (point))
                (setq quoted (eq (char-after) ?\"))
                (goto-char (point-max))
              (let (quoted)
                (goto-char e)
                (skip-chars-forward " \t")
                (setq start (point))
                (setq quoted (eq (char-after) ?\"))
                (goto-char (point-max))

-               (skip-chars-backward " \t")
+               (skip-chars-backward " \t" start)

                (if (setq quoted (and quoted
                                      (> (point) (1+ start))
                                      (eq (char-before) ?\")))
                (if (setq quoted (and quoted
                                      (> (point) (1+ start))
                                      (eq (char-before) ?\")))


@@ -1094,17 +1093,17 @@ strings are stripped."
   "Decode MIME-encoded STRING and return the result.
 If ADDRESS-MIME is non-nil, strip backslashes which precede characters
 other than `\"' and `\\' in quoted strings."
   "Decode MIME-encoded STRING and return the result.
 If ADDRESS-MIME is non-nil, strip backslashes which precede characters
 other than `\"' and `\\' in quoted strings."

-  (let ((m (mm-multibyte-p)))
+  ;; (let ((m (mm-multibyte-p)))

     (if (string-match "=\\?" string)
        (with-temp-buffer
     (if (string-match "=\\?" string)
        (with-temp-buffer

-         ;; Fixme: This logic is wrong, but seems to be required by
-         ;; Gnus summary buffer generation.  The value of `m' depends
-         ;; on the current buffer, not global multibyteness or that
-         ;; of the string.  Also the string returned should always be
-         ;; multibyte in a multibyte session, i.e. the buffer should
-         ;; be multibyte before `buffer-string' is called.
-         (when m
-           (mm-enable-multibyte))
+          ;; We used to only call mm-enable-multibyte if `m' is non-nil,
+          ;; but this can't be the right criterion.  Don't just revert this
+          ;; change if it encounters a bug.  Please help me fix it
+          ;; right instead.  --Stef
+          ;; The string returned should always be multibyte in a multibyte
+         ;; session, i.e. the buffer should be multibyte before
+         ;; `buffer-string' is called.
+          (mm-enable-multibyte)

          (insert string)
          (inline
            (rfc2047-decode-region (point-min) (point-max) address-mime))
          (insert string)
          (inline
            (rfc2047-decode-region (point-min) (point-max) address-mime))


@@ -1118,7 +1117,7 @@ other than `\"' and `\\' in quoted strings."
                (rfc2047-strip-backslashes-in-quoted-strings)
                (buffer-string))))
       ;; Fixme: As above, `m' here is inappropriate.
                (rfc2047-strip-backslashes-in-quoted-strings)
                (buffer-string))))
       ;; Fixme: As above, `m' here is inappropriate.

-      (if (and m
+      (if (and ;; m

               mail-parse-charset
               (not (eq mail-parse-charset 'us-ascii))
               (not (eq mail-parse-charset 'gnus-decoded)))
               mail-parse-charset
               (not (eq mail-parse-charset 'us-ascii))
               (not (eq mail-parse-charset 'gnus-decoded)))


@@ -1134,9 +1133,9 @@ other than `\"' and `\\' in quoted strings."
          (if (and (fboundp 'detect-coding-string)
                   ;; string is purely ASCII
                   (eq (detect-coding-string string t) 'undecided))
          (if (and (fboundp 'detect-coding-string)
                   ;; string is purely ASCII
                   (eq (detect-coding-string string t) 'undecided))

-             string
-           (mm-decode-coding-string string mail-parse-charset))
-       (mm-string-as-multibyte string)))))
+              string
+            (mm-decode-coding-string string mail-parse-charset))
+        (mm-string-to-multibyte string)))) ;; )

 
 (defun rfc2047-decode-address-string (string)
   "Decode MIME-encoded STRING and return the result.
 
 (defun rfc2047-decode-address-string (string)
   "Decode MIME-encoded STRING and return the result.


@@ -1161,5 +1160,4 @@ strings are stripped."
 
 (provide 'rfc2047)
 
 
 (provide 'rfc2047)
 

-;;; arch-tag: a07fe3d4-22b5-4c4a-bd89-b1f82d5d36f6

 ;;; rfc2047.el ends here
 ;;; rfc2047.el ends here