220 37915 article Path: news.gmane.org!.POSTED!not-for-mail From: Niall Douglas Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Path views, which are views of file system paths Date: Fri, 20 Apr 2018 14:53:03 -0700 (PDT) Lines: 86 Approved: news@gmane.org Message-ID: References: <62d6570f-d9fe-4cd1-a26c-4879a29d1362@isocpp.org> <29b1d493-fffc-4982-b4db-81571b58569c@isocpp.org> <957af749-9ae3-494d-8d50-cd415c77916b@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_11201_233716445.1524261183906" X-Trace: blaine.gmane.org 1524261059 12891 195.159.176.226 (20 Apr 2018 21:50:59 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Fri, 20 Apr 2018 21:50:59 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBDGKFT5YZADRBQGC5HLAKGQEXDKQ2JQ@isocpp.org Fri Apr 20 23:50:55 2018 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-vk0-f71.google.com ([209.85.213.71]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1f9dvj-0003HG-BW for gclcip-std-proposals@m.gmane.org; Fri, 20 Apr 2018 23:50:55 +0200 Original-Received: by mail-vk0-f71.google.com with SMTP id p10sf6396711vki.23 for ; Fri, 20 Apr 2018 14:53:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:message-id:in-reply-to:references:subject:mime-version :x-original-sender:reply-to:precedence:mailing-list:list-id :list-post:list-help:list-archive:list-subscribe:list-unsubscribe; bh=zHjI5bQegiPmKz/XBmZDtDoDZiz5CphmNNU9vfSFZWc=; b=kF5qDURHQFVYr+0c8r4Lhi+pJT2c5Z0M2NqeI3bUwFB3JKil3y9m/CVb/41PvDsY0B P0O7qQvcXH/dRYoUzwtW34Pt0uFETw9/U1csUN9Au1MTfVimH+MNmGpoAoKG97h6NiiI /j7Qd4bsea0UeR1okoo3U+pevMdUqaHNlOZ+WTziPdxPr9IJRe47tck0BFtO+nBZvz5L 1/nGr2OcC2HcDZB0QZFEMLdkVjKIJJhTSFy1njyqMh0EoJZc6iKzWtzC4heCVklp9mEW VF/07OvNvfuFlmzlnWns8GGYCLiG2xPDbSpN4Zu/M+KEwFa9OKJAHZJbgiRGOT5Daq/M znNw== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:message-id:in-reply-to:references:subject:mime-version :x-original-sender:reply-to:precedence:mailing-list:list-id :list-post:list-help:list-archive:list-subscribe:list-unsubscribe; bh=zHjI5bQegiPmKz/XBmZDtDoDZiz5CphmNNU9vfSFZWc=; b=PEKxxRc07Vm0mEbZ+dnhQqiwY+jtwAGE9WtfJI08lS3RF9k0+crBuD/q/DaXIJzpuD HL1XapfxyxJ6pFt3QBRUoHT4vtphoFfeXy81/0rd9vgCbSZr0Eifcr+LCgSG00wvhtT8 aZQ4d6pQi9o2hHMr7eE4lXNijmqiy5xCq9TG4P+hnSyp2jLB2sA7qDoFH8vu/O15OELy j7CfBII0YD6H3mWEAd4sh9DqQ8dRska7+a6g2RAbZl7omGQDRpbwwqY8G1A/6T/on2M4 jAT3v/+KJDNoi1yBPKd6kojvGIRUk37TqWQicIdL4xO98mALcfDz68GzzTHs45LU2o60 CQsQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:message-id:in-reply-to:references :subject:mime-version:x-original-sender:reply-to:precedence :mailing-list:list-id:x-spam-checked-in-group:list-post:list-help :list-archive:list-subscribe:list-unsubscribe; bh=zHjI5bQegiPmKz/XBmZDtDoDZiz5CphmNNU9vfSFZWc=; b=pG/aqzlUr2VjgubwRxa5/M0SFD73+swUeO/KYCJh3FtiM4588+WtZhynEN5V6qbdya uWbV5rvLA5Eq4gKmjRzkM66lmm/bRi7QJ+zhbCHmM4Gps5tQsQISQS2HIjiTdaATw45Z RPEhhPdUVII3DSNDFSZy1g9MUouqlVah3TsO+vwg0Br8war0zd3Z9ZZ1MzObS8FJuSSq Nk5heYq6Q/wjYUrE6lV5G6gj21W+sc71z0LSdWz4JEzb7F8DwTMaCAMbSvHuLBsQXOYC anshWYjL/GYPyV1ra4wvU88E7OOtn1PzFIx8OWftjoF9pVfcKEe1gazWIfacOIHSppKt 5x7w== X-Gm-Message-State: ALQs6tBM8m/8ejQH7eqoI1JyFA+RWf3MVnNwXTsNvDMXBolb6XT5QRbT t/eq8JVvY2lnpyLvF6LTYpVkHg== X-Google-Smtp-Source: AIpwx4+pFkkVsPB0I89xUQRIy8GjTxs2WfyNGHMuQLkRt+tisdGZUIotxyNXf9knrb2srDQQaOtxbQ== X-Received: by 10.31.185.149 with SMTP id j143mr3083525vkf.121.1524261185811; Fri, 20 Apr 2018 14:53:05 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.31.164.70 with SMTP id n67ls5202166vke.20.gmail; Fri, 20 Apr 2018 14:53:04 -0700 (PDT) X-Received: by 10.31.154.88 with SMTP id c85mr1400522vke.5.1524261184403; Fri, 20 Apr 2018 14:53:04 -0700 (PDT) In-Reply-To: X-Original-Sender: nialldouglas14@gmail.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Spam-Checked-In-Group: std-proposals@isocpp.org X-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:37915 Archived-At: ------=_Part_11201_233716445.1524261183906 Content-Type: multipart/alternative; boundary="----=_Part_11202_701894070.1524261183907" ------=_Part_11202_701894070.1524261183907 Content-Type: text/plain; charset="UTF-8" > > That's precisely why I *don't* think it's a good solution. Because you're > not treating `char` as "a pure sitting-on-the-fence declaration". You're > treating `char` as UTF-8. > If and only if the native encoding is not char. > You're *explicitly* doing this, because on Win32, you will generate a > native-encoded path by converting from UTF-8 to UTF-16. There is no > fence-sitting happening; you've pick a side. > I suppose one could match std::filesystem::path, and treat char input as ANSI? Would you prefer that instead? > > So if you are going to pick a side, best to be explicit about it. > > Sure, it looks like I'll need to simplify the paper's argument a bit. Thanks for the feedback. Niall -- You received this message because you are subscribed to the Google Groups "ISO C++ Standard - Future Proposals" group. To unsubscribe from this group and stop receiving emails from it, send an email to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. To view this discussion on the web visit https://groups.google.com/a/isocpp.org/d/msgid/std-proposals/af5962d8-0e52-4f55-becb-69f7539d0d14%40isocpp.org. ------=_Part_11202_701894070.1524261183907 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
That's precisely why I don't think it's a good = solution. Because you're not treating `char` as "a pure sitting-on= -the-fence declaration". You're treating `char` as UTF-8.

If and only if the native encoding is n= ot char.
=C2=A0
You're explicitly doing this, because on= Win32, you will generate a native-encoded path by converting from UTF-8 to= UTF-16. There is no fence-sitting happening; you've pick a side.

I suppose one could match std::f= ilesystem::path, and treat char input as ANSI?

Wou= ld you prefer that instead?
=C2=A0

So if you are going to pick a= side, best to be explicit about it.

S= ure, it looks like I'll need to simplify the paper's argument a bit= .. Thanks for the feedback.

Niall

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