From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.bugs Subject: bug#42147: 28.0.50; pure vs side-effect-free, missing optimizations? Date: Thu, 02 Jul 2020 11:49:04 -0400 Message-ID: References: <3A9CC2A3-8307-47B2-8D80-795C0AF020E1@acm.org> <0433A879-C98D-4B1A-B85C-A15DA9289099@acm.org> <1621669100.2102667.1593639091621@mail.yahoo.com> <775819003.2516724.1593687594435@mail.yahoo.com> <5F2B4684-34D1-4474-8909-9F435369FE54@acm.org> <705260433.2731607.1593698199171@mail.yahoo.com> <6CF8EE58-9A49-40E7-AA86-48AB39BF94BA@acm.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="18974"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: Paul Eggert , Andrea Corallo , 42147@debbugs.gnu.org To: Mattias =?UTF-8?Q?Engdeg=C3=A5rd?= Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Thu Jul 02 17:50:10 2020 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jr1TV-0004ob-5F for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 02 Jul 2020 17:50:09 +0200 Original-Received: from localhost ([::1]:58998 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jr1TU-00080j-3T for geb-bug-gnu-emacs@m.gmane-mx.org; Thu, 02 Jul 2020 11:50:08 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:49416) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jr1TO-00080d-7w for bug-gnu-emacs@gnu.org; Thu, 02 Jul 2020 11:50:02 -0400 Original-Received: from debbugs.gnu.org ([209.51.188.43]:43992) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1jr1TN-0004mH-VS for bug-gnu-emacs@gnu.org; Thu, 02 Jul 2020 11:50:01 -0400 Original-Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1jr1TN-0002M6-TQ for bug-gnu-emacs@gnu.org; Thu, 02 Jul 2020 11:50:01 -0400 X-Loop: help-debbugs@gnu.org Resent-From: Stefan Monnier Original-Sender: "Debbugs-submit" Resent-CC: bug-gnu-emacs@gnu.org Resent-Date: Thu, 02 Jul 2020 15:50:01 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 42147 X-GNU-PR-Package: emacs Original-Received: via spool by 42147-submit@debbugs.gnu.org id=B42147.15937049558995 (code B ref 42147); Thu, 02 Jul 2020 15:50:01 +0000 Original-Received: (at 42147) by debbugs.gnu.org; 2 Jul 2020 15:49:15 +0000 Original-Received: from localhost ([127.0.0.1]:55538 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jr1Sd-0002L1-NV for submit@debbugs.gnu.org; Thu, 02 Jul 2020 11:49:15 -0400 Original-Received: from mailscanner.iro.umontreal.ca ([132.204.25.50]:47466) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1jr1Sb-0002Ko-NU for 42147@debbugs.gnu.org; Thu, 02 Jul 2020 11:49:14 -0400 Original-Received: from pmg1.iro.umontreal.ca (localhost.localdomain [127.0.0.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 0F33510033A; Thu, 2 Jul 2020 11:49:08 -0400 (EDT) Original-Received: from mail01.iro.umontreal.ca (unknown [172.31.2.1]) by pmg1.iro.umontreal.ca (Proxmox) with ESMTP id 4182D10004D; Thu, 2 Jul 2020 11:49:06 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=iro.umontreal.ca; s=mail; t=1593704946; bh=uRGwE9Ts0E74fVdYxnIWj8UkSXpsTaY5gC/Z5fZXJ7s=; h=From:To:Cc:Subject:References:Date:In-Reply-To:From; b=c/+cQ1iWsmyvDYrfSlrEuchHYggmX5dvaVb6nRYVJePpNBnn6fDnsCQetH3HIH7f6 WehgBdVxPOyc6zS5qRVchnZ6z99CnS6hhlUqUolqT7C7q9UMktfZV7beRSeekEKbB2 3/B6gz4wNWyuIJwSiSx8znepUetBN+DSVWAH6qKZ4d3jbpVQX+Eg725iTmsbx5NMON EowLyD9nxyYpekwS/VUWY6G7fBrGXp+aKwbCK+sxq+YcvAbumOEkAB/1XuxuZpkGty btKHTapqPqxjf75G0sKwmnFHb5nbJ43+LA3p2lXrCNIM0S9kojgkysQsH90/0DDl/5 /0Hjxf8Usk9ew== Original-Received: from alfajor (unknown [157.52.0.200]) by mail01.iro.umontreal.ca (Postfix) with ESMTPSA id C72A2120736; Thu, 2 Jul 2020 11:49:05 -0400 (EDT) In-Reply-To: <6CF8EE58-9A49-40E7-AA86-48AB39BF94BA@acm.org> ("Mattias =?UTF-8?Q?Engdeg=C3=A5rd?="'s message of "Thu, 2 Jul 2020 16:51:03 +0200") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list 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-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:182639 Archived-At: > Conses are mutable and thus each have their own identity. Numbers are > immutable and have none; there is no defined way to distinguish two numbers > that have the same value ('eq' does not give well-defined results). Better yet, there's still hope that we change things such that `eq` behaves like `eql` on bignums (and maybe also on floats). Stefan