From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Fraga, Eric" Subject: Re: Bug: Operator associativity problem [9.1.9 (release_9.1.9-65-g5e4542 @ /usr/share/emacs/26.1/lisp/org/)] Date: Thu, 26 Sep 2019 05:23:37 +0000 Message-ID: <87h84zmy08.fsf@ucl.ac.uk> References: <20190925095021.GA729@thinkbox.jade-hamburg.de> <87k19wtu7d.fsf@ucl.ac.uk> <874l10nsw5.fsf@thinkbox.jade-hamburg.de> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Received: from eggs.gnu.org ([2001:470:142:3::10]:36279) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iDMFo-0005jK-9Q for emacs-orgmode@gnu.org; Thu, 26 Sep 2019 01:23:50 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iDMFm-0003QW-7T for emacs-orgmode@gnu.org; Thu, 26 Sep 2019 01:23:48 -0400 Received: from mail-eopbgr130134.outbound.protection.outlook.com ([40.107.13.134]:34471 helo=EUR01-HE1-obe.outbound.protection.outlook.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iDMFl-0003Eu-IW for emacs-orgmode@gnu.org; Thu, 26 Sep 2019 01:23:46 -0400 In-Reply-To: <874l10nsw5.fsf@thinkbox.jade-hamburg.de> (Justus Winter's message of "Wed, 25 Sep 2019 20:16:26 +0200") Content-Language: en-US List-Id: "General discussions about Org-mode." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-orgmode-bounces+geo-emacs-orgmode=m.gmane.org@gnu.org Sender: "Emacs-orgmode" To: Justus Winter Cc: "emacs-orgmode@gnu.org" On Wednesday, 25 Sep 2019 at 20:16, Justus Winter wrote: > However, I cannot fathom the rationale behind this property, and for a > spreadsheet-like application I consider it borderline negligent. Not my place to defend (or otherwise) the decisions that went into defining= the grammar for Calc. However, there is no single universal precedence de= finition for algebraic expressions. People do write, e.g. in heat transfer= applications, W/m^2 K to mean W/(m^2 K) which is not the precedence you be= lieve should be implemented. Just because Excel, say, implements something= does not make it negligent for others to implement something different. As a mathematician, I always write my expressions as, for instance, W m^{-2= } K^{-1} both in practice and when teaching to avoid all doubt. --=20 Eric S Fraga via Emacs 27.0.50, Org release_9.2.4-401-gfabd6d