According to Andrew Brown:
>
>the diffs in both (rcs and sccs) are stored as (it seems to me)
>something quite like ed commands.  i just fell like it ought to be
>possible to write a perl script (yeah...i'm lazy) that read stuff it
>and spat stuff out.  hmm...i've converted packet dumps before...maybe
>this isn't so different?  :)
>

IIRC the difference between RCS and SCCS is that RCS keeps a full copy
of the most recent version with diffs to go backwards, whereas SCCS
keeps the orginal file you checked in and applies diffs to get to the
most recent version.  The RCS method sounds more sane because you
normally want the most recent version.  The SCCS one was probably
simpler to implement :-)

-- 
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Brett Lymn, Computer Systems Administrator, BAE SYSTEMS
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