bug#65301: 29.1; archive-mode can not handle archive named with foreign characters

bug#65301: 29.1; archive-mode can not handle archive named with foreign characters

[awrhygty]

If archive file name contains characters not encodable with local
language encoding(cp932 for Japanese Windows OS),
archive-mode fails to extract subfiles.
(even if subfile name consists of only ASCII characters)

For example, open c:/tmp/test丄.zip and type RET on a entry,
emacs reports:
  unzip:  cannot find either c:/tmp/test .zip or c:/tmp/test .zip.zip.


In GNU Emacs 29.1 (build 2, x86_64-w64-mingw32) of 2023-08-02 built on
 AVALON
Windowing system distributor 'Microsoft Corp.', version 10.0.19045
System Description: Microsoft Windows 10 Pro (v10.0.2009.19045.3324)

Configured using:
 'configure --with-modules --without-dbus --with-native-compilation=aot
 --without-compress-install --with-tree-sitter CFLAGS=-O2'

Configured features:
ACL GIF GMP GNUTLS HARFBUZZ JPEG JSON LCMS2 LIBXML2 MODULES NATIVE_COMP
NOTIFY W32NOTIFY PDUMPER PNG RSVG SOUND SQLITE3 THREADS TIFF
TOOLKIT_SCROLL_BARS TREE_SITTER WEBP XPM ZLIB

(NATIVE_COMP present but libgccjit not available)

Important settings:
  value of $LANG: JPN
  locale-coding-system: cp932

Major mode: Dired by name

Minor modes in effect:
  shell-dirtrack-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  show-paren-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  buffer-read-only: t
  line-number-mode: t
  indent-tabs-mode: t
  transient-mark-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t

Load-path shadows:
None found.

Features:
(qp files-x shell pcomplete comint ansi-osc ansi-color ring dired-aux
image-mode exif arc-mode archive-mode pp shadow emacsbug help-mode
gnutls network-stream nsm mailalias smtpmail textsec uni-scripts url
url-proxy url-privacy url-expand url-methods url-history url-cookie
generate-lisp-file url-domsuf url-util url-parse auth-source eieio
eieio-core cl-macs json map byte-opt gv bytecomp byte-compile url-vars
idna-mapping ucs-normalize uni-confusable textsec-check sort cl-seq
misearch multi-isearch mail-extr message sendmail mailcap yank-media
puny dired dired-loaddefs rfc822 mml mml-sec password-cache epa derived
epg rfc6068 epg-config gnus-util text-property-search time-date subr-x
mm-decode mm-bodies mm-encode mail-parse rfc2231 rfc2047 rfc2045 mm-util
ietf-drums mail-prsvr mailabbrev mail-utils gmm-utils mailheader
cl-loaddefs cl-lib term/bobcat japan-util rmc iso-transl tooltip cconv
eldoc paren electric uniquify ediff-hook vc-hooks lisp-float-type
elisp-mode mwheel dos-w32 ls-lisp disp-table term/w32-win w32-win
w32-vars term/common-win tool-bar dnd fontset image regexp-opt fringe
tabulated-list replace newcomment text-mode lisp-mode prog-mode register
page tab-bar menu-bar rfn-eshadow isearch easymenu timer select
scroll-bar mouse jit-lock font-lock syntax font-core term/tty-colors
frame minibuffer nadvice seq simple cl-generic indonesian philippine
cham georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese composite emoji-zwj charscript
charprop case-table epa-hook jka-cmpr-hook help abbrev obarray oclosure
cl-preloaded button loaddefs theme-loaddefs faces cus-face macroexp
files window text-properties overlay sha1 md5 base64 format env
code-pages mule custom widget keymap hashtable-print-readable backquote
threads w32notify w32 lcms2 multi-tty make-network-process
native-compile emacs)

Memory information:
((conses 16 235491 21481)
 (symbols 48 8709 3)
 (strings 32 40470 2713)
 (string-bytes 1 870636)
 (vectors 16 45015)
 (vector-slots 8 1266046 131540)
 (floats 8 105 300)
 (intervals 56 1343 0)
 (buffers 984 16))

bug#65301: 29.1; archive-mode can not handle archive named with foreign characters

[Eli Zaretskii]

tags 65301 wontfix
close 65301
thanks

> From: awrhygty@outlook.com
> Date: Tue, 15 Aug 2023 13:17:54 +0900
> 
> 
> If archive file name contains characters not encodable with local
> language encoding(cp932 for Japanese Windows OS),
> archive-mode fails to extract subfiles.
> (even if subfile name consists of only ASCII characters)
> 
> For example, open c:/tmp/test丄.zip and type RET on a entry,
> emacs reports:
>   unzip:  cannot find either c:/tmp/test .zip or c:/tmp/test .zip.zip.

This is because we run the unzip.exe program to extract the files, and
running subprocesses from Emacs on MS-Windows is limited to
command-line arguments which can be encoded in the system codepage.

Basically, this is a duplicate of bug#65300.

bug#65301: 29.1; archive-mode can not handle archive named with foreign characters

[awrhygty]

Eli Zaretskii <eliz@gnu.org> writes:

> tags 65301 wontfix
> close 65301
> thanks
>
>> From: awrhygty@outlook.com
>> Date: Tue, 15 Aug 2023 13:17:54 +0900
>> 
>> 
>> If archive file name contains characters not encodable with local
>> language encoding(cp932 for Japanese Windows OS),
>> archive-mode fails to extract subfiles.
>> (even if subfile name consists of only ASCII characters)
>> 
>> For example, open c:/tmp/test丄.zip and type RET on a entry,
>> emacs reports:
>>   unzip:  cannot find either c:/tmp/test .zip or c:/tmp/test .zip.zip.
>
> This is because we run the unzip.exe program to extract the files, and
> running subprocesses from Emacs on MS-Windows is limited to
> command-line arguments which can be encoded in the system codepage.
>
> Basically, this is a duplicate of bug#65300.

I have installed not only unzip.exe but also 7z.exe.
7z.exe works fine on cmd terminal.
But I can not find how to call 7z.exe on emacs with parameters encoded
with utf-8.

bug#65301: 29.1; archive-mode can not handle archive named with foreign characters

[Eli Zaretskii]

> From: awrhygty@outlook.com
> Cc: 65301@debbugs.gnu.org
> Date: Tue, 15 Aug 2023 22:09:50 +0900
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > This is because we run the unzip.exe program to extract the files, and
> > running subprocesses from Emacs on MS-Windows is limited to
> > command-line arguments which can be encoded in the system codepage.
> >
> > Basically, this is a duplicate of bug#65300.
> 
> I have installed not only unzip.exe but also 7z.exe.
> 7z.exe works fine on cmd terminal.
> But I can not find how to call 7z.exe on emacs with parameters encoded
> with utf-8.

You can't.  It's a basic limitation of invoking programs from Emacs on
Windows, as explained above.

In reality, this is rarely a serious limitation, because most programs
users routinely invoke from Emacs on Windows don't support UTF-8
encoded arguments anyway.  But the limitation is deep, so even if we
had more of these situations, we cannot really fix this until Windows
systems support UTF-8 better (in particular in file-related APIs).