From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: Calc: `*' binds more strongly than `/' Date: Wed, 18 Apr 2007 15:27:12 -0400 Message-ID: References: <87y7kvxj6p.fsf@arcor.de> <87odlrkn74.fsf@truman.edu> <87tzvhcul9.fsf@stupidchicken.com> <863b2z2mma.fsf@blue.stonehenge.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1176924509 5934 80.91.229.12 (18 Apr 2007 19:28:29 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Wed, 18 Apr 2007 19:28:29 +0000 (UTC) Cc: "Randal L. Schwartz" , emacs-devel@gnu.org To: storm@cua.dk (Kim F. Storm) Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Wed Apr 18 21:28:22 2007 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1HeFpG-00019K-1c for ged-emacs-devel@m.gmane.org; Wed, 18 Apr 2007 21:28:22 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HeFu7-0007Mf-Ey for ged-emacs-devel@m.gmane.org; Wed, 18 Apr 2007 15:33:23 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1HeFt7-00072g-3h for emacs-devel@gnu.org; Wed, 18 Apr 2007 15:32:21 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1HeFt5-00071q-EM for emacs-devel@gnu.org; Wed, 18 Apr 2007 15:32:20 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HeFt5-00071l-5b for emacs-devel@gnu.org; Wed, 18 Apr 2007 15:32:19 -0400 Original-Received: from mercure.iro.umontreal.ca ([132.204.24.67]) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1HeFoC-0006UY-VM for emacs-devel@gnu.org; Wed, 18 Apr 2007 15:27:17 -0400 Original-Received: from hidalgo.iro.umontreal.ca (hidalgo.iro.umontreal.ca [132.204.27.50]) by mercure.iro.umontreal.ca (Postfix) with ESMTP id 08B3B2CF102; Wed, 18 Apr 2007 15:27:16 -0400 (EDT) Original-Received: from faina.iro.umontreal.ca (faina.iro.umontreal.ca [132.204.26.177]) by hidalgo.iro.umontreal.ca (Postfix) with ESMTP id 97B743FE0; Wed, 18 Apr 2007 15:27:12 -0400 (EDT) Original-Received: by faina.iro.umontreal.ca (Postfix, from userid 20848) id 7E6A56C805; Wed, 18 Apr 2007 15:27:12 -0400 (EDT) In-Reply-To: (Kim F. Storm's message of "Wed\, 18 Apr 2007 10\:44\:37 +0200") User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.94 (gnu/linux) X-DIRO-MailScanner-Information: Please contact the ISP for more information X-DIRO-MailScanner: Found to be clean X-DIRO-MailScanner-SpamCheck: n'est pas un polluriel, SpamAssassin (score=-2.82, requis 5, autolearn=not spam, ALL_TRUSTED -2.82) X-DIRO-MailScanner-From: monnier@iro.umontreal.ca X-detected-kernel: Linux 2.6 (newer, 3) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:69576 Archived-At: >>> No, not normal for mathemeticians (and me on a bad day), who expect >>> A*B/C*D to be the same as (A*B)/(C*D). >> But for "A*B/C*D" I have a difficult time believing that some "standard math >> notation" would parse it as you suggest. I.e. do you have any reference to >> concrete data to back up this hypothesis? > Yes, if you read it as > A * B > ----- > C * D > I (and I believe the calc author) interpret it as above I don't think so. Theorem: the "/" is *not* a horizontal bar. Proof: What parse tree do you expect from A+B/C+D? Is it the same as the one you expect from A + B ----- C + D QED. Stefan