From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.help Subject: Re: Grep Japanese characters Date: Thu, 12 Jul 2018 16:23:39 +0300 Message-ID: <837em0fuzo.fsf@gnu.org> References: <20180712.080255.586725992291613595.tkk@misasa.okayama-u.ac.jp> <83a7qxfa7r.fsf@gnu.org> <87d0vt2lxj.fsf@yue-d-PC.i-did-not-set--mail-host-address--so-tickle-me> NNTP-Posting-Host: blaine.gmane.org X-Trace: blaine.gmane.org 1531401968 13678 195.159.176.226 (12 Jul 2018 13:26:08 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 12 Jul 2018 13:26:08 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Jul 12 15:26:04 2018 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fdbbf-0003Rp-B0 for geh-help-gnu-emacs@m.gmane.org; Thu, 12 Jul 2018 15:26:03 +0200 Original-Received: from localhost ([::1]:59890 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fdbdm-0002tC-4d for geh-help-gnu-emacs@m.gmane.org; Thu, 12 Jul 2018 09:28:14 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:55661) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fdbZQ-0008Ru-RR for help-gnu-emacs@gnu.org; Thu, 12 Jul 2018 09:23:45 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fdbZL-0006Ri-PB for help-gnu-emacs@gnu.org; Thu, 12 Jul 2018 09:23:44 -0400 Original-Received: from fencepost.gnu.org ([2001:4830:134:3::e]:42575) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fdbZL-0006Ra-Ks for help-gnu-emacs@gnu.org; Thu, 12 Jul 2018 09:23:39 -0400 Original-Received: from [176.228.60.248] (port=2382 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1fdbZL-0002Es-3k for help-gnu-emacs@gnu.org; Thu, 12 Jul 2018 09:23:39 -0400 In-reply-to: <87d0vt2lxj.fsf@yue-d-PC.i-did-not-set--mail-host-address--so-tickle-me> (message from YUE Daian on Thu, 12 Jul 2018 11:05:28 +0800) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.org gmane.emacs.help:117409 Archived-At: > From: YUE Daian > Date: Thu, 12 Jul 2018 11:05:28 +0800 > > > You cannot pass UTF-8 encoded parameters to sub-programs on > > MS-Windows. You can only use the encoding of your system codepage. > > Sorry, it's an MS-Windows limitation. > > I remember Windows 10 has a beta option to use UTF-8 for the whole > system instead of your local encoding. If Windows will at some point will allow using UTF-8 as the locale's codeset, then invoking subprograms with UTF-8 encoded command-line arguments will become possible in Emacs on Windows. For now, the MSDN documentation of the latest C runtime still says: The locale argument can take a locale name, a language string, a language string and country/region code, a code page, or a language string, country/region code, and code page. The set of available locale names, languages, country/region codes, and code pages includes all those supported by the Windows NLS API except code pages that require more than two bytes per character, such as UTF-7 and UTF-8. If you provide a code page value of UTF-7 or UTF-8, setlocale will fail, returning NULL.