From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.help Subject: Re: how do I know that the buffer is narrowed Date: Sun, 04 Dec 2005 09:54:10 -0500 Organization: Bell Sympatico Message-ID: <871x0sgbnq.fsf-monnier+gnu.emacs.help@gnu.org> References: <87vey9kcrk.fsf@thalassa.informatimago.com> <85oe41hgvq.fsf@lola.goethe.zz> <86mzjlt5nm.fsf@flame.pc> <87vey8oja2.fsf-monnier+gnu.emacs.help@gnu.org> NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1133709077 5348 80.91.229.2 (4 Dec 2005 15:11:17 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Sun, 4 Dec 2005 15:11:17 +0000 (UTC) Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sun Dec 04 16:11:09 2005 Return-path: Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1EivW8-0001WV-FQ for geh-help-gnu-emacs@m.gmane.org; Sun, 04 Dec 2005 16:11:08 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1EivWD-0007eC-Nn for geh-help-gnu-emacs@m.gmane.org; Sun, 04 Dec 2005 10:11:13 -0500 Original-Path: shelby.stanford.edu!newsfeed.stanford.edu!postnews.google.com!news4.google.com!border1.nntp.dca.giganews.com!nntp.giganews.com!wns13feed!worldnet.att.net!207.35.177.252!nf3.bellglobal.com!nf1.bellglobal.com!nf2.bellglobal.com!news20.bellglobal.com.POSTED!not-for-mail Original-Newsgroups: gnu.emacs.help User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.50 (gnu/linux) Cancel-Lock: sha1:DpCqvqcxLfWBe/RE609Blj4X578= Original-Lines: 16 Original-NNTP-Posting-Host: 67.71.25.91 Original-X-Complaints-To: abuse@sympatico.ca Original-X-Trace: news20.bellglobal.com 1133708050 67.71.25.91 (Sun, 04 Dec 2005 09:54:10 EST) Original-NNTP-Posting-Date: Sun, 04 Dec 2005 09:54:10 EST Original-Xref: shelby.stanford.edu gnu.emacs.help:136055 Original-To: help-gnu-emacs@gnu.org X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:31663 Archived-At: >> Yes, there is a very good one: you unnecessarily assume that the buffer >> starts at position 1. > Both `what-cursor-position' and `what-line' (in simple.el) do this > assumption. After looking in buffer.h and seeing: > /* Position of beginning of buffer. */ > #define BEG (1) > I don't see any reason NOT to assume this. I didn't say it was a bad assumption. Just an unneeded one. Code with fewer assumptions is generally better than a code with more assumptions. Especially when it's shorter and more efficient, of course. Stefan "whose Emacs uses #define BEG (12345678)"