linux-kernel - Re: [PATCH] SubmittingPatches: Increase the line length limit from 80 to 100 colums

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Date:	Fri, 3 Feb 2012 12:57:15 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Cyrill Gorcunov <gorcunov@...nvz.org>,
	linux-kernel@...r.kernel.org,
	Pavel Emelyanov <xemul@...allels.com>,
	Serge Hallyn <serge.hallyn@...onical.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Kees Cook <keescook@...omium.org>, Tejun Heo <tj@...nel.org>,
	Andrew Vagin <avagin@...nvz.org>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Andi Kleen <andi@...stfloor.org>,
	KOSAKI Motohiro <kosaki.motohiro@...il.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Glauber Costa <glommer@...allels.com>,
	Matt Helsley <matthltc@...ibm.com>,
	Pekka Enberg <penberg@...nel.org>,
	Eric Dumazet <eric.dumazet@...il.com>,
	Vasiliy Kulikov <segoon@...nwall.com>, Valdis.Kletnieks@...edu
Subject: Re: [PATCH] SubmittingPatches: Increase the line length limit from
 80 to 100 colums

On Fri, 3 Feb 2012 11:07:43 +0100
Ingo Molnar <mingo@...e.hu> wrote:

> [PATCH] SubmittingPatches: Increase the line length limit from 80 to 100 colums
> 
> The overwhelming majority of kernel developers have stopped 
> using 80 col terminals years ago.
> 
> As far as I'm aware I was the last regular kernel contributor 
> who still used a standard VGA text console, but both text 
> consoles and using them to read the kernel source code has 
> become increasingly gruesome years ago so I switched to a wider 
> terminal two years ago.

I always use 80-cols, everywhere.  Not because I particularly like it -
I find it a bit too small.  I use it because it is the standard, and
using it helps me see where and how badly we violate the standard.

We've actually done pretty well - linewrap in 80 cols rarely causes me
problems.  It's sufficiently rare that when it *does* happen, it really
stands out.

IOW, the changelog is quite the exaggeration.

> So lets increase the limit to 100 cols

I think that's going too far - 96 will be enough and it's a multiple of 8.

The multiple-of-8 thing seems pleasing but probably doesn't matter
much.  It means that things like


if (foo) {
	if (foo) {
		if (foo) {
			if (foo) {
				if (foo) {
					if (foo) {
						if (foo) {
							if (foo) {
								if (foo) {
									if (foo) {
										if (foo) {
											if (foo) {
												if (foo) {
													if (foo) {
														if (foo) {
												

will line up properly.


If we really want to improve the world we should jump into a time
machine and set tabstops to 4.  Sigh.

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