220 24976 article Path: news.gmane.org!not-for-mail From: Lawrence Crowl Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Any purposes for $, @, or ` ? Date: Sat, 5 Mar 2016 08:55:06 -0800 Lines: 23 Approved: news@gmane.org Message-ID: References: <94de1ee2-0821-418e-a7b1-87b61ea438eb@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: ger.gmane.org 1457196911 16909 80.91.229.3 (5 Mar 2016 16:55:11 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 5 Mar 2016 16:55:11 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBC2NJ44B2QNBB2465S3AKGQEVUDEAHA@isocpp.org Sat Mar 05 17:55:11 2016 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pa0-f70.google.com ([209.85.220.70]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1acFTy-000098-6v for gclcip-std-proposals@m.gmane.org; Sat, 05 Mar 2016 17:55:10 +0100 Original-Received: by mail-pa0-f70.google.com with SMTP id a7sf106205326pax.1 for ; Sat, 05 Mar 2016 08:55:09 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:sender:in-reply-to:references:date :message-id:subject:from:to:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=2Z6C9qkGXgltyNEQkuJYU/3MRfL/kfaWWFbXSPIowQg=; b=guuyFTQrErLwLE4kJaW0rISKT+ZqRe0rqc/zlcdhGe9IbMzujoUIZj6obAwOD+pJTB Us1C4kKYdnBVFV8x4+IJ4ce6VjEOyEq+zk4bfBXnJgq0SXDuByTGSh1FYFyiKhBv+LUA Nq4n0BQqO0fK+SuAK70pObdVsNY9LLPXnOqvoLwYnxxBUd6J+4KAJuYUbHJUvIRW8Cpe uhtfvslsojD4Ir6P7fVAOyHFEz1Zg9fGI5Ci1Dq6nWQquVg5dFYeKJOvIrjTnMLLWY8v UWixLLCkH34Rh7a8wtJhhotZP+MZO4K6C9kVDDPVxFeSSQuBVHw5oK5KG1CghBdqVEPL f/gw== X-Gm-Message-State: AD7BkJLvsAM2MM2zdJuu/pqjEvMeCZDkCCPWG6Pb/lee+3//bSn7uq5RhrRtWLfMANWRIA== X-Received: by 10.67.13.228 with SMTP id fb4mr9977984pad.39.1457196909206; Sat, 05 Mar 2016 08:55:09 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.140.109.135 with SMTP id l7ls1032419qgf.87.gmail; Sat, 05 Mar 2016 08:55:07 -0800 (PST) X-Received: by 10.31.152.130 with SMTP id a124mr11847295vke.54.1457196907546; Sat, 05 Mar 2016 08:55:07 -0800 (PST) Original-Received: from mail-vk0-x233.google.com (mail-vk0-x233.google.com. [2607:f8b0:400c:c05::233]) by mx.google.com with ESMTPS id h192si5102947vka.138.2016.03.05.08.55.07 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sat, 05 Mar 2016 08:55:07 -0800 (PST) Received-SPF: pass (google.com: domain of lawrence.crowl@gmail.com designates 2607:f8b0:400c:c05::233 as permitted sender) client-ip=2607:f8b0:400c:c05::233; Original-Received: by mail-vk0-x233.google.com with SMTP id e6so82083970vkh.2 for ; Sat, 05 Mar 2016 08:55:07 -0800 (PST) X-Received: by 10.31.52.68 with SMTP id b65mr11899576vka.150.1457196907092; Sat, 05 Mar 2016 08:55:07 -0800 (PST) Original-Sender: lawrence.crowl@gmail.com Original-Received: by 10.176.3.77 with HTTP; Sat, 5 Mar 2016 08:55:06 -0800 (PST) In-Reply-To: <94de1ee2-0821-418e-a7b1-87b61ea438eb@isocpp.org> X-Original-Sender: Lawrence@Crowl.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of lawrence.crowl@gmail.com designates 2607:f8b0:400c:c05::233 as permitted sender) smtp.mailfrom=lawrence.crowl@gmail.com; dkim=pass header.i=@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:24976 Archived-At: On 2/27/16, NDos Dannyu wrote: > These three characters are not part of the basic source character set, > even though they are graphic ASCII characters. > Any purposes for them? Some operating systems use '$' in identifiers. Compilers sometimes have an option to allow '$' in identifiers. The '@' and '`' characters are used for extension languages. That is you have a language that uses them much like the preprocessor uses '#' to find out where in the program text it should pay attention to them. The use of these characters in C++ would have negative consequences. -- Lawrence Crowl -- 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/CAA%2BUVZQZJMR_DNw0EPCdqH4K6V%3D%3Dn4qVFABkTwaVjE87mvYtDQ%40mail.gmail.com. .