From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Eli Zaretskii Newsgroups: gmane.emacs.devel Subject: Re: [PATCH] Unicode Lisp reader escapes Date: Fri, 05 May 2006 13:25:23 +0300 Message-ID: References: <17491.34779.959316.484740@parhasard.net> <87odyfnqcj.fsf-monnier+emacs@gnu.org> <87psiuj8at.fsf-monnier+emacs@gnu.org> Reply-To: Eli Zaretskii NNTP-Posting-Host: main.gmane.org X-Trace: sea.gmane.org 1146824744 19230 80.91.229.2 (5 May 2006 10:25:44 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Fri, 5 May 2006 10:25:44 +0000 (UTC) Cc: alkibiades@gmx.de, emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Fri May 05 12:25:40 2006 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1FbxV9-0002RJ-B8 for ged-emacs-devel@m.gmane.org; Fri, 05 May 2006 12:25:35 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1FbxV8-0002tW-PS for ged-emacs-devel@m.gmane.org; Fri, 05 May 2006 06:25:34 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1FbxUw-0002rt-ET for emacs-devel@gnu.org; Fri, 05 May 2006 06:25:22 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1FbxUu-0002pW-LU for emacs-devel@gnu.org; Fri, 05 May 2006 06:25:21 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1FbxUu-0002pP-GP for emacs-devel@gnu.org; Fri, 05 May 2006 06:25:20 -0400 Original-Received: from [192.114.186.20] (helo=nitzan.inter.net.il) by monty-python.gnu.org with esmtp (Exim 4.52) id 1FbxV1-0006Ko-VR for emacs-devel@gnu.org; Fri, 05 May 2006 06:25:28 -0400 Original-Received: from HOME-C4E4A596F7 (IGLD-80-230-67-63.inter.net.il [80.230.67.63]) by nitzan.inter.net.il (MOS 3.7.3-GA) with ESMTP id DGX42134 (AUTH halo1); Fri, 5 May 2006 13:25:16 +0300 (IDT) Original-To: Stefan Monnier In-reply-to: (message from Stefan Monnier on Thu, 04 May 2006 17:40:28 -0400) 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:53941 Archived-At: > Cc: storm@cua.dk, emacs-devel@gnu.org, alkibiades@gmx.de > From: Stefan Monnier > Date: Thu, 04 May 2006 17:40:28 -0400 > > >> After all, it's there, it works, and as mentioned: there's no > >> evidence that the decoding time of \u escapes it ever going to need > >> to be fast. > > > ??? inside the Lisp reader, everything needs to be fast, IMO. > > Why? Because the Lisp reader is the backbone of the Lisp interpreter. > IMO the only things that need to be fast are those things whose > performance has a visible impact. I see no evidence that there'll ever be > a case where the speed with which we can read \u escapes will matter. You don't need to see an evidence of a collapsing bridge to know that it must be several times stronger than any imaginable load that could ever be put on it. In other words, not everything is empirical; there's a thing called ``good engineering practice.'' Sorry for being overly didactic, I'm sure you know all that. I'm just amazed that such a fundamental issue needs evidence.