From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED.blaine.gmane.org!not-for-mail From: Daniele Nicolodi Newsgroups: gmane.emacs.devel Subject: Re: `message' not outputting the newline "atomically" Date: Tue, 2 Jul 2019 09:58:34 +0200 Message-ID: References: <07619925-e367-fb88-2dd8-27addb2e9052@grinta.net> <68b398b1-3790-b32f-535d-6ea2518f79b8@cs.ucla.edu> <83r27hlkix.fsf@gnu.org> <1d550142-8d66-485b-6796-981351718b53@cs.ucla.edu> <83blykjijy.fsf@gnu.org> <65c60a70-311d-bf9f-b509-d3dd80ddc511@cs.ucla.edu> <83a7e4jh5d.fsf@gnu.org> <838stnkb7y.fsf@gnu.org> <42f4e8e2-c3c6-be09-6b53-3b7b17c1302d@grinta.net> <83woh1es3x.fsf@gnu.org> <83lfxhdvaf.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Injection-Info: blaine.gmane.org; posting-host="blaine.gmane.org:195.159.176.226"; logging-data="111212"; mail-complaints-to="usenet@blaine.gmane.org" User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:60.0) Gecko/20100101 Thunderbird/60.7.2 Cc: emacs-devel@gnu.org To: Eli Zaretskii Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Jul 02 09:58:21 2019 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([209.51.188.17]) by blaine.gmane.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1hiDgB-000SoO-DM for ged-emacs-devel@m.gmane.org; Tue, 02 Jul 2019 09:58:20 +0200 Original-Received: from localhost ([::1]:50394 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hiDgA-0005D9-Dn for ged-emacs-devel@m.gmane.org; Tue, 02 Jul 2019 03:58:18 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:48655) by lists.gnu.org with esmtp (Exim 4.86_2) (envelope-from ) id 1hiDg5-0005D3-7q for emacs-devel@gnu.org; Tue, 02 Jul 2019 03:58:14 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hiDg4-0005Zs-Aj for emacs-devel@gnu.org; Tue, 02 Jul 2019 03:58:13 -0400 Original-Received: from zed.grinta.net ([109.74.203.128]:43094) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hiDg0-0005Xn-Rr; Tue, 02 Jul 2019 03:58:09 -0400 Original-Received: from black.local (53.149.140.77.rev.sfr.net [77.140.149.53]) (Authenticated sender: daniele) by zed.grinta.net (Postfix) with ESMTPSA id 083E7E0CA6; Tue, 2 Jul 2019 07:58:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=grinta.net; s=mail; t=1562054283; bh=kLBp7s+GkfC9MskZ+YU2xsh1hwjTsqubfyh0cS+1vQ0=; h=Subject:To:Cc:References:From:Date:In-Reply-To:From; b=pJ7dYG3TpJzjcQbwlWh/RCw0oxe0OYUtb+FCAvIEPmoWpllJ7WSbK27tODNlgmsPg i7KlNNNBjFgNyq1qoclW4UVJemwMKztMj+PUgrx7ahjRwoIn8oLELHBoJ7+Uy3SEWB voYRX2+Vs/R5iSlrCwmStH6zR2q15JGW5Pvm9Bg8= Openpgp: preference=signencrypt In-Reply-To: <83lfxhdvaf.fsf@gnu.org> Content-Language: en-US X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 109.74.203.128 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.23 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" Xref: news.gmane.org gmane.emacs.devel:238292 Archived-At: On 01/07/2019 20:28, Eli Zaretskii wrote: >> From: Daniele Nicolodi >> Date: Mon, 1 Jul 2019 19:01:18 +0200 >> >> I think you didn't understand my point, and your selective quoting makes >> me thing you are trying to warp what i wrote in your favor. I was >> arguing that in the case of a fprintf() with a format string that ends >> in a new line there is no way to obtain a partial output, with stderr >> unbuffered or line buffered. On any sane implementation of the c library >> Either you will get it all or nothing. > > And I was saying that this is wrong. With unbuffered stderr, you > _can_ obtain partial output. I still disagree. Can you please write a piece of C code that achieves that, having a fprintf() function call error out, in whichever way you prefer, such that it's output is partial? I tried to achieve that myself and I haven't found a way. Thank you. Best, Daniele