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From: John Baldwin <jhb@freebsd.org>
To: Brooks Davis <brooks@freebsd.org>
Cc: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: Re: svn commit: r303464 - in head/sys: amd64/linux amd64/linux32
 compat/freebsd32 compat/svr4 i386/ibcs2 i386/linux kern
Date: Thu, 28 Jul 2016 15:04:33 -0700
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On Thursday, July 28, 2016 09:29:04 PM Brooks Davis wrote:
> Author: brooks
> Date: Thu Jul 28 21:29:04 2016
> New Revision: 303464
> URL: https://svnweb.freebsd.org/changeset/base/303464
> 
> Log:
>   Don't create pointless backups of generated files in "make sysent".
>   
>   Any sensible workflow will include a revision control system from which
>   to restore the old files if required.  In normal usage, developers just
>   have to clean up the mess.
>   
>   Reviewed by:	jhb
>   Sponsored by:	DARPA, AFRL
>   Differential Revision:	https://reviews.freebsd.org/D7353

Goes back a long time:

https://svnweb.freebsd.org/csrg?view=revision&revision=38725

Even then CSRG was using SCCS.

-- 
John Baldwin