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: Making --with-wide-int the default Date: Sun, 15 Nov 2015 23:13:43 +0200 Message-ID: <83a8qfc6ew.fsf@gnu.org> References: <5610ED13.1010406@dancol.org> <56117F37.9060808@dancol.org> <83oag087gs.fsf@gnu.org> <83oafz70im.fsf@gnu.org> <5620AF43.4050401@cs.ucla.edu> <83k2qn6xfm.fsf@gnu.org> <5620B4FA.1000804@cs.ucla.edu> <83wptojs1r.fsf@gnu.org> <56444C66.8050506@gmx.at> <83r3jugx8g.fsf@gnu.org> <87io56nu0a.fsf@fencepost.gnu.org> <83lha1dl87.fsf@gnu.org> <22087.29085.814201.779385@a1i15.kph.uni-mainz.de> <83h9knc96e.fsf@gnu.org> <22088.62318.726754.397869@a1i15.kph.uni-mainz.de> Reply-To: Eli Zaretskii NNTP-Posting-Host: plane.gmane.org X-Trace: ger.gmane.org 1447704610 15270 80.91.229.3 (16 Nov 2015 20:10:10 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 16 Nov 2015 20:10:10 +0000 (UTC) Cc: rudalics@gmx.at, dak@gnu.org, emacs-devel@gnu.org, rms@gnu.org, jwiegley@gmail.com To: Ulrich Mueller Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Nov 16 21:10:01 2015 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZyQ69-0000t9-Kj for ged-emacs-devel@m.gmane.org; Mon, 16 Nov 2015 21:09:57 +0100 Original-Received: from localhost ([::1]:48589 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZyQ68-00038d-Sv for ged-emacs-devel@m.gmane.org; Mon, 16 Nov 2015 15:09:57 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:37605) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zy4cY-0005XF-Ar for emacs-devel@gnu.org; Sun, 15 Nov 2015 16:13:59 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Zy4cX-0005wH-FJ for emacs-devel@gnu.org; Sun, 15 Nov 2015 16:13:58 -0500 Original-Received: from mtaout29.012.net.il ([80.179.55.185]:58576) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Zy4cR-0005vQ-LC; Sun, 15 Nov 2015 16:13:51 -0500 Original-Received: from conversion-daemon.mtaout29.012.net.il by mtaout29.012.net.il (HyperSendmail v2007.08) id <0NXV00D00JZCXC00@mtaout29.012.net.il>; Sun, 15 Nov 2015 23:13:09 +0200 (IST) Original-Received: from HOME-C4E4A596F7 ([84.94.185.246]) by mtaout29.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0NXV00B65K9XVB30@mtaout29.012.net.il>; Sun, 15 Nov 2015 23:13:09 +0200 (IST) In-reply-to: <22088.62318.726754.397869@a1i15.kph.uni-mainz.de> X-012-Sender: halo1@inter.net.il X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6.x X-Received-From: 80.179.55.185 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:194535 Archived-At: > Date: Sun, 15 Nov 2015 22:04:46 +0100 > Cc: rudalics@gmx.at, jwiegley@gmail.com, dak@gnu.org, rms@gnu.org, > emacs-devel@gnu.org > From: Ulrich Mueller > > >>>>> On Sun, 15 Nov 2015, Eli Zaretskii wrote: > > >> Date: Sat, 14 Nov 2015 18:38:37 +0100 > >> From: Ulrich Mueller > >> Cc: rudalics@gmx.at, jwiegley@gmail.com, dak@gnu.org, rms@gnu.org, > >> emacs-devel@gnu.org > >> > >> In case you want any feedback from distros, Gentoo makes the option > >> available to users as the "wide-int" use flag, and the default is off. > >> I've not seen a single complaint from users that we should change that > >> default. (So most likely the Gentoo default will stay off, regardless > >> of what you decide to do with the upstream default.) > > > Did the option you offer mention the fact that using it enlarges the > > maximum buffer and string size to (almost) 2GB? If not, it's quite > > possible that your users simply did not realize what this option would > > give them in user-level functionality, and treated it as yet another > > obscure build feature. > > This is what we have as description: > > app-editors/emacs:wide-int - Prefer wide Emacs integers (typically > 62-bit). This option has an effect only on architectures where > "long" and "long long" types have different size. > > Seems that we copied the first sentence from Emacs' configure --help > output, which also doesn't say anything about buffer size or memory > footprint. Fair enough, but then we must agree that the lack of complaints probably says nothing at all about your users' preferences in this matter. > Unrelated question: Are the "62 bit" in the description above correct, > or should it rather be 61 bit? 62, including the sign bit. Try this: M-: (- most-positive-fixnum) RET and then look at the hex representation.