From f702159a4d7cb8471a17884108880aa8d7961728 Mon Sep 17 00:00:00 2001
From: yamaoka <yamaoka>
Date: Sat, 12 Feb 2005 02:12:27 +0000
Subject: [PATCH] Synch to No Gnus 200502120211.

---
 lisp/ChangeLog   |    5 +++++
 lisp/gnus-art.el |   27 ++++++++++++++++-----------
 lisp/mm-util.el  |   15 ++++++++++-----
 3 files changed, 31 insertions(+), 16 deletions(-)

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 8332d24..4e48d3c 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,7 +1,12 @@
 2005-02-12  Katsumi Yamaoka  <yamaoka@jpl.org>
 
+	* gnus-art.el (gnus-mime-copy-part): Don't decode compressed parts.
+
 	* mm-util.el (mm-coding-system-to-mime-charset): Make it work with
 	non-Mule XEmacs as well.
+	(mm-decompress-buffer): Signal an error intentionally if it does
+	not decompress compressed data because auto-compression-mode is
+	disabled.
 
 2005-02-11  Teodor Zlatanov  <tzz@lifelogs.com>
 
diff --git a/lisp/gnus-art.el b/lisp/gnus-art.el
index 0878c59..0fe3be3 100644
--- a/lisp/gnus-art.el
+++ b/lisp/gnus-art.el
@@ -4606,19 +4606,24 @@ are decompressed."
   (unless handle
     (setq handle (get-text-property (point) 'gnus-data)))
   (when handle
-    (let* ((filename (or (mail-content-type-get (mm-handle-disposition handle)
-						'name)
-			 (mail-content-type-get (mm-handle-disposition handle)
-						'filename)))
-	   (contents (mm-with-unibyte-buffer
-		       (mm-insert-part handle)
-		       (or (mm-decompress-buffer filename)
+    (let ((filename (or (mail-content-type-get (mm-handle-disposition handle)
+					       'name)
+			(mail-content-type-get (mm-handle-disposition handle)
+					       'filename)))
+	  contents dont-decode charset coding-system)
+      (mm-with-unibyte-buffer
+	(mm-insert-part handle)
+	(setq contents (or (condition-case nil
+			       (mm-decompress-buffer filename nil 'sig)
+			     (error
+			      (setq dont-decode t)
+			      nil))
 			   (buffer-string))))
-	   charset coding-system)
-      (setq filename (if filename
-			 (file-name-nondirectory filename)
-		       "*decoded*"))
+      (setq filename (cond (filename (file-name-nondirectory filename))
+			   (dont-decode "*raw data*")
+			   (t "*decoded*")))
       (cond
+       (dont-decode)
        ((not arg)
 	(unless (setq charset (mail-content-type-get
 			       (mm-handle-type handle) 'charset))
diff --git a/lisp/mm-util.el b/lisp/mm-util.el
index d21d0ed..23861ee 100644
--- a/lisp/mm-util.el
+++ b/lisp/mm-util.el
@@ -960,11 +960,13 @@ To make this function work with XEmacs, the APEL package is required."
 
 (defun mm-decompress-buffer (filename &optional inplace force)
   "Decompress buffer's contents, depending on jka-compr.
-Only when FORCE is non-nil or `auto-compression-mode' is enabled and
-FILENAME agrees with `jka-compr-compression-info-list', decompression
-is done.  If INPLACE is nil, return decompressed data or nil without
-modifying the buffer.  Otherwise, replace the buffer's contents with
-the decompressed data.  The buffer's multibyteness must be turned off."
+Only when FORCE is t or `auto-compression-mode' is enabled and FILENAME
+agrees with `jka-compr-compression-info-list', decompression is done.
+Signal an error if FORCE is neither nil nor t and compressed data are
+not decompressed because `auto-compression-mode' is disabled.
+If INPLACE is nil, return decompressed data or nil without modifying
+the buffer.  Otherwise, replace the buffer's contents with the
+decompressed data.  The buffer's multibyteness must be turned off."
   (when (and filename
 	     (if force
 		 (prog1 t (require 'jka-compr))
@@ -972,6 +974,9 @@ the decompressed data.  The buffer's multibyteness must be turned off."
 		    (jka-compr-installed-p))))
     (let ((info (jka-compr-get-compression-info filename)))
       (when info
+	(unless (or (memq force (list nil t))
+		    (jka-compr-installed-p))
+	  (error ""))
 	(let ((prog (jka-compr-info-uncompress-program info))
 	      (args (jka-compr-info-uncompress-args info))
 	      (msg (format "%s %s..."
-- 
1.7.10.4