From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Paul Eggert Newsgroups: gmane.emacs.bugs Subject: bug#32252: [PATCH] %o and %x now format signed numbers Date: Thu, 26 Jul 2018 09:55:53 -0700 Organization: UCLA Computer Science Department Message-ID: References: <7e8dd084-7ab9-c2ce-1d6c-e673fa998f11@cs.ucla.edu> <6f720005-b5e4-5d1c-b4e8-a8992c7635c4@cs.ucla.edu> <1c3c61c4-f93f-3bea-f6ed-b89e1cdea89b@cs.ucla.edu> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable X-Trace: blaine.gmane.org 1532624126 29402 195.159.176.226 (26 Jul 2018 16:55:26 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 26 Jul 2018 16:55:26 +0000 (UTC) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 Cc: 32252@debbugs.gnu.org To: Helmut Eller , Andreas Schwab Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Thu Jul 26 18:55:21 2018 Return-path: Envelope-to: geb-bug-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 1fijXs-0007WD-7H for geb-bug-gnu-emacs@m.gmane.org; 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Thu, 26 Jul 2018 09:55:54 -0700 (PDT) Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id oP-zRGNgtcXG; Thu, 26 Jul 2018 09:55:53 -0700 (PDT) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 775E8160EC1; Thu, 26 Jul 2018 09:55:53 -0700 (PDT) X-Virus-Scanned: amavisd-new at zimbra.cs.ucla.edu Original-Received: from zimbra.cs.ucla.edu ([127.0.0.1]) by localhost (zimbra.cs.ucla.edu [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id y-0ArBU2GYY5; Thu, 26 Jul 2018 09:55:53 -0700 (PDT) Original-Received: from Penguin.CS.UCLA.EDU (Penguin.CS.UCLA.EDU [131.179.64.200]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 5ED71160DFD; Thu, 26 Jul 2018 09:55:53 -0700 (PDT) Openpgp: preference=signencrypt Autocrypt: addr=eggert@cs.ucla.edu; prefer-encrypt=mutual; keydata= xsFNBEyAcmQBEADAAyH2xoTu7ppG5D3a8FMZEon74dCvc4+q1XA2J2tBy2pwaTqfhpxxdGA9 Jj50UJ3PD4bSUEgN8tLZ0san47l5XTAFLi2456ciSl5m8sKaHlGdt9XmAAtmXqeZVIYX/UFS 96fDzf4xhEmm/y7LbYEPQdUdxu47xA5KhTYp5bltF3WYDz1Ygd7gx07Auwp7iw7eNvnoDTAl KAl8KYDZzbDNCQGEbpY3efZIvPdeI+FWQN4W+kghy+P6au6PrIIhYraeua7XDdb2LS1en3Ss mE3QjqfRqI/A2ue8JMwsvXe/WK38Ezs6x74iTaqI3AFH6ilAhDqpMnd/msSESNFt76DiO1ZK QMr9amVPknjfPmJISqdhgB1DlEdw34sROf6V8mZw0xfqT6PKE46LcFefzs0kbg4GORf8vjG2 Sf1tk5eU8MBiyN/bZ03bKNjNYMpODDQQwuP84kYLkX2wBxxMAhBxwbDVZudzxDZJ1C2VXujC OJVxq2kljBM9ETYuUGqd75AW2LXrLw6+MuIsHFAYAgRr7+KcwDgBAfwhPBYX34nSSiHlmLC+ KaHLeCLF5ZI2vKm3HEeCTtlOg7xZEONgwzL+fdKo+D6SoC8RRxJKs8a3sVfI4t6CnrQzvJbB n6gxdgCu5i29J1QCYrCYvql2UyFPAK+do99/1jOXT4m2836j1wARAQABzSBQYXVsIEVnZ2Vy dCA8ZWdnZXJ0QGNzLnVjbGEuZWR1PsLBfgQTAQIAKAUCTIByZAIbAwUJEswDAAYLCQgHAwIG FQgCCQoLBBYCAwECH In-Reply-To: Content-Language: en-US X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 208.118.235.43 X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.org gmane.emacs.bugs:148973 Archived-At: On 07/26/2018 02:56 AM, Helmut Eller wrote: > How often does one need to print a > time value in hex notation? It happens every time I run Emacs, in standard code shipped with Emacs.=20 I discovered this while doing compatibility checking before I proposed=20 this change. (The code in question continues to work just fine when=20 binary-as-unsigned is nil.) > format-time-string doesn't even support that. We're talking about 'format' not 'format-time-string', and Emacs code=20 does apply 'format' with %x to the tricky little integers that=20 'current-time' returns. It's a real hassle, and this hassle is pervasive=20 in Emacs. Having bignums would simplify it significantly. And this problem is not limited to times. It's also file sizes, buffer=20 and string sizes (currently limited to fixnums, but they shouldn't be),=20 glyph codes, inode numbers, device numbers, file descriptor numbers,=20 inotify masks, windowing parameters, and other stuff I don't even know=20 about. It's pervasive and is a real hassle. By the way, the format %x compatibility checking I mentioned is partly=20 why I have confidence that the practical effects of this change will be=20 minor. Many of the problems that I thought might happen, don't in fact=20 happen, because people who attempt to format negative numbers with %x=20 have already run into portability hassles on 32- vs 64-bit platforms,=20 and so they have written their code so that the platform choice doesn't=20 matter, either by ensuring that the integer is nonnegative or by not=20 caring what string is generated so long as it doesn't lose information.=20 Code written like this (and so far, that's all the code I've found)=20 works just fine when 'format'=C2=A0 %x works like it does in Common Lisp = or=20 Scheme.