From mboxrd@z Thu Jan  1 00:00:00 1970
From: Junio C Hamano <gitster@pobox.com>
Subject: Re: 100%
Date: Sat, 23 Jun 2007 12:33:15 -0700
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To: Johannes Schindelin <Johannes.Schindelin@gmx.de>
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In-Reply-To: <Pine.LNX.4.64.0706231154300.4059@racer.site> (Johannes
	Schindelin's message of "Sat, 23 Jun 2007 11:56:19 +0100 (BST)")
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Johannes Schindelin <Johannes.Schindelin@gmx.de> writes:

> By the same reasoning, you could say "never round down to 0%, because I 
> want to know when there is no similarity".
>
> You cannot be exact when you have to cut off fractions, so why try for 
> _exactly_ one number?

R0 or C0 would not happen in real life, so 0% is a moot issue.

However, wasn't that you who did follow that "certain numbers
are special" logic in diffstat?

You advocated "diff --stat" should draw at least one +/- for a
patch that adds/removes lines.  And I (and others) agreed
because zero is special in the context of that application.

I think reserving R100 to mean "identical byte sequences" has
value, when people look at --name-status output, in the context
of "similarity index".