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bug#5553: 23.1.92; Archives with wrong coding system

From: Juri Linkov
Subject: bug#5553: 23.1.92; Archives with wrong coding system
Date: Tue, 09 Feb 2010 23:19:27 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1.92 (x86_64-pc-linux-gnu)

When `archive-mode' is enabled for an archive file with an unknown file
extension, using the rule ("\\(PK00\\)?[P]K\003\004" . archive-mode)
from `magic-fallback-mode-alist', visiting such a file fails with the
args-out-of-range error.

The following patch should fix this bug using the same regexp as in
`magic-fallback-mode-alist' and the same coding system as for archive
file extensions in `auto-coding-alist':

=== modified file 'lisp/international/mule.el'
--- lisp/international/mule.el  2010-02-01 22:57:45 +0000
+++ lisp/international/mule.el  2010-02-09 21:18:51 +0000
@@ -1653,7 +1653,9 @@ (defcustom auto-coding-regexp-alist
     ("\\`\xFE\xFF" . utf-16be-with-signature)
     ("\\`\xFF\xFE" . utf-16le-with-signature)
     ("\\`\xEF\xBB\xBF" . utf-8-with-signature)
-    ("\\`;ELC\024\0\0\0" . emacs-mule)))       ; Emacs 20-compiled
+    ("\\`;ELC\024\0\0\0" . emacs-mule) ; Emacs 20-compiled
+    ;; For `archive-mode' in `magic-fallback-mode-alist':
+    ("\\(PK00\\)?[P]K\003\004" . no-conversion-multibyte)))
   "Alist of patterns vs corresponding coding systems.
 Each element looks like (REGEXP . CODING-SYSTEM).
 A file whose first bytes match REGEXP is decoded by CODING-SYSTEM on reading.

Juri Linkov

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