diff --stat: ensure at least one '-' for deletions, and one '+' for additions
The number of '-' and '+' is still linear. The idea is that scaled-length := floor(a * length + b) with the following constraints: if length == 1, scaled-length == 1, and the combined length of plusses and minusses should not be larger than the width by a small margin. Thus, a + b == 1 and a * max_plusses + b + a * max_minusses + b = width + 1 The solution is a * x + b = ((width - 1) * (x - 1) + max_change - 1) / (max_change - 1) Signed-off-by: NJohannes Schindelin <Johannes.Schindelin@gmx.de> Signed-off-by: NJunio C Hamano <junkio@cox.net>
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