From: Junio C Hamano <junkio@cox.net>
Date: Fri, 3 Mar 2006 06:11:25 +0000 (-0800)
Subject: diffcore-rename: similarity estimator fix.
X-Git-Tag: v1.3.0-rc1~58^2
X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/1706306a54cfb5f1bf65f2b054aab2a5a7dba8e7?hp=1706306a54cfb5f1bf65f2b054aab2a5a7dba8e7

diffcore-rename: similarity estimator fix.

The "similarity" logic was giving added material way too much
negative weight.  What we wanted to see was how similar the
post-change image was compared to the pre-change image, so the
natural definition of similarity is how much common things are
there, relative to the post-change image's size.

This simplifies things a lot.

Signed-off-by: Junio C Hamano <junkio@cox.net>
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