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Date: Tue, 12 Jul 2005 13:55:13 +0200
From: Patrick McHardy <kaber@trash.net>
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To: Denis Vlasenko <vda@ilport.com.ua>
CC: sander@humilis.net, "Michael S. Tsirkin" <mst@mellanox.co.il>,
       linux-kernel@vger.kernel.org
Subject: Re: kernel guide to space
References: <20050711145616.GA22936@mellanox.co.il> <20050711153447.GA19848@favonius> <200507120952.04279.vda@ilport.com.ua>
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Denis Vlasenko wrote:
> text with 8-char tabs:
> 
> struct s {
>         int n;          /* comment */
>         unsigned int u; /* comment */
> };
> 
> Same text viewed with tabs set to 4-char width:
> 
> struct s {
>     int n;      /* comment */
>     unsigned int u; /* comment */
> };
> 
> Comments are not aligned anymore

Best rule IMO is to use tabs for indentation and spaces for alignment.
This way tab size can be changed without breaking alignment.