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#32463: 27.0.50; (logior -1) => 4611686018427387903 Date: Sat, 18 Aug 2018 12:59:07 -0700 Organization: UCLA Computer Science Department Message-ID: <0c647d0a-71f9-f3f4-c8af-80ee00ff200a@cs.ucla.edu> References: <86mutll4w2.fsf@gmail.com> <3a6f17af-018e-cb0b-5182-cf736b3a814c@cs.ucla.edu> <83a7pjfql6.fsf@gnu.org> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: blaine.gmane.org 1534622288 16613 195.159.176.226 (18 Aug 2018 19:58:08 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Sat, 18 Aug 2018 19:58:08 +0000 (UTC) User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 Cc: andrewjmoreton@gmail.com, pipcet@gmail.com, 32463@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane.org@gnu.org Sat Aug 18 21:58:04 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 1fr7MJ-0004DI-Lg for geb-bug-gnu-emacs@m.gmane.org; Sat, 18 Aug 2018 21:58:03 +0200 Original-Received: from localhost ([::1]:40313 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fr7OQ-00078S-84 for geb-bug-gnu-emacs@m.gmane.org; Sat, 18 Aug 2018 16:00:14 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:36506) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fr7OI-00078F-WC for bug-gnu-emacs@gnu.org; Sat, 18 Aug 2018 16:00:07 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fr7OF-0007ul-J4 for bug-gnu-emacs@gnu.org; Sat, 18 Aug 2018 16:00:06 -0400 Original-Received: from debbugs.gnu.org ([208.118.235.43]:49255) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1fr7OF-0007uV-DN for bug-gnu-emacs@gnu.org; Sat, 18 Aug 2018 16:00:03 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1fr7OF-0000Su-61 for bug-gnu-emacs@gnu.org; Sat, 18 Aug 2018 16:00:03 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Paul Eggert Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Sat, 18 Aug 2018 20:00:03 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 32463 X-GNU-PR-Package: emacs X-GNU-PR-Keywords: Original-Received: via spool by 32463-submit@debbugs.gnu.org id=B32463.15346223581582 (code B ref 32463); Sat, 18 Aug 2018 20:00:03 +0000 Original-Received: (at 32463) by debbugs.gnu.org; 18 Aug 2018 19:59:18 +0000 Original-Received: from localhost ([127.0.0.1]:54270 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fr7NW-0000PS-4d for submit@debbugs.gnu.org; Sat, 18 Aug 2018 15:59:18 -0400 Original-Received: from zimbra.cs.ucla.edu ([131.179.128.68]:60424) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1fr7NT-0000Ow-UP for 32463@debbugs.gnu.org; Sat, 18 Aug 2018 15:59:16 -0400 Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id 0C16D16087B; Sat, 18 Aug 2018 12:59:10 -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 mqv-RHjms5e4; Sat, 18 Aug 2018 12:59:09 -0700 (PDT) Original-Received: from localhost (localhost [127.0.0.1]) by zimbra.cs.ucla.edu (Postfix) with ESMTP id DFB5E160FBE; Sat, 18 Aug 2018 12:59:08 -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 yHDlPSTOkO4p; Sat, 18 Aug 2018 12:59:08 -0700 (PDT) Original-Received: from [192.168.1.9] (unknown [47.154.30.119]) by zimbra.cs.ucla.edu (Postfix) with ESMTPSA id 758FA16087B; Sat, 18 Aug 2018 12:59:08 -0700 (PDT) In-Reply-To: <83a7pjfql6.fsf@gnu.org> 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:149579 Archived-At: Eli Zaretskii wrote: >> we can make (lsh A B) signal an error if A is a >> bignum and B is negative, since there's nothing we can do there that is >> reasonable and is compatible with the fixnum behavior. > If that's the best we can do, fine. OK, let's go that route. > It is IMO absurd for us to deprecate a valid and useful operation just > because we added bignums. It would indeed be absurd if lsh were still valid and useful. However, because lsh assumes fixed-width integers its overall utility is negative for new Elisp code because it mostly just introduces opportunities for confusion. This is why Common Lisp and Scheme don't have lsh. Backward compatibility is the only reason Emacs Lisp should have lsh. (Obviously we can't simply remove lsh.)