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From: John Baldwin <jhb@freebsd.org>
To: Steven Hartland <smh@freebsd.org>
Subject: Re: svn commit: r272738 - in head/sys: dev/mrsas modules/mrsas
 modules/mrsas/mrsas_linux
Date: Wed, 08 Oct 2014 08:48:37 -0400
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Cc: Kashyap D Desai <kadesai@freebsd.org>, svn-src-head@freebsd.org,
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On Wednesday, October 08, 2014 10:50:47 AM Steven Hartland wrote:
> I thought it was convension to avoid using $FreeBSD$ in code comments
> instead use the __FBSDID e.g.
> 
> #include <sys/cdefs.h>
> __FBSDID("$FreeBSD$");
> #include <sys/param.h>
> 
> Could anyone confirm?
> 
>     Regards
>     Steve


Yes, C files use __FBSDID().  I believe headers use a bare $FreeBSD$ comment 
after the license block.

-- 
John Baldwin