Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756254AbXFOGsK (ORCPT ); Fri, 15 Jun 2007 02:48:10 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754637AbXFOGrr (ORCPT ); Fri, 15 Jun 2007 02:47:47 -0400 Received: from ik-out-1112.google.com ([66.249.90.176]:57724 "EHLO ik-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753807AbXFOGrq (ORCPT ); Fri, 15 Jun 2007 02:47:46 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=px7k8vczWXDE5Q1IT9J627XADbEBaaxdW+HlHDVeMaGVw4vYkAz9Vr+hieRoqtftkF4qq0rYVYvaqozkSU0rkYhAim8aPzDoqXPh2ofasfALwt01y+N2hEMb+lFZJcvyqjVe9ZHIwvEiEiwtv0YVj0Gev8ewGcfJWcM7H6fUCeo= Message-ID: Date: Fri, 15 Jun 2007 12:17:44 +0530 From: "debian developer" To: "dave young" Subject: Re: coding style Cc: "Kok, Auke" , "Willy Tarreau" , "Cyrill Gorcunov" , LKML , "Randy Dunlap" In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20070614184836.GA6520@cvg> <20070615045111.GU943@1wt.eu> <46721F18.8090303@intel.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2930 Lines: 74 On 6/15/07, dave young wrote: > Hi, > The Documentation/CodingStyle says: > > Outside of comments, documentation and except in Kconfig, spaces are never > used for indentation, and the above example is deliberately broken. > > Regards > dave > > 2007/6/15, Kok, Auke : > > Willy Tarreau wrote: > > > On Thu, Jun 14, 2007 at 10:48:36PM +0400, Cyrill Gorcunov wrote: > > >> Hi to all, > > >> > > >> a simple question the answer to witch I didn't find in CodingStyle. > > >> Look for a code snip: > > >> > > >> err = foo(arg_a, arg_b, arg_c, > > >> arg_d); > > >> > > >> the second line contains 'd' arg aligned with tabs only > > >> but it could be rewritten with more elegant style (by adding > > >> a few spaces) like this > > >> > > >> err = foo(arg_a, arg_b, arg_c, > > >> arg_d); > > >> > > >> so which one is preferred for the kernel? > > > > > > There is no "preferred", just one good and one bad :-) > > > > > > Ideally, you should use tabs only for indentation, and spaces only for > > > alignment. Keep in mind that there are people using different tab sizes > > > and that your tabs should not make it harder for them to read your code. > > > In your example above, you should use tabs from left up to "err", then > > > spaces to go from "err" to "arg_d". > > > > > > However, we know that some editors such as emacs are stupid in this regard, > > > because they fill with tabs then complete with spaces, so it's not always > > > easy. > > > > the current "checkpatch.pl" script rejects this notion and requires that you use > > tabs whenever you can (you can still align code within the length of one tab). > > > > Since in the example part (2) above there are 9 spaces needed to go from err to > > arg_d, it complains if you had used 9 spaces here. It only allows you to use > > tabs + n spaces (where n < 8) > > > > I personally prefer spaces, but the checkpatch.pl script does not agree, much to > > my dismay :( > > > > > > Auke > > - > > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > > the body of a message to majordomo@vger.kernel.org > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > Please read the FAQ at http://www.tux.org/lkml/ > > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > And *Please* do not top-post! I know gmail directly goes to the top while replying, but think of other mail clients out there. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/