Re: [PATCH] diff.c: locate_size_cache() fix.

This fixes two bugs.

 - declaration of auto variable "cmp" was preceeded by a
   statement, causing compilation error on real C compilers;
   noticed and patch given by Yoichi Yuasa.

 - the function's calling convention was overloading its size
   parameter to mean "largest possible value means do not add
   entry", which was a bad taste.  Brought up during a
   discussion with Peter Baudis.

Signed-off-by: Junio C Hamano <redacted>

This fixes a bug that was preventing non-default parameter to -B
option to be passed correctly; you could not give more than 50%
break score.

Signed-off-by: Junio C Hamano <redacted>

This fixes three bugs in the -B heuristics.

 - Although it was advertised that the initial break criteria
   used was the same as what diffcore-rename uses, it was using
   something different.  Instead of using smaller of src and dst
   size to compare with "edit" size, (insertion and deletion),
   it was using larger of src and dst, unlike the rename/copy
   detection logic.  This caused the parameter to -B to mean
   something different from the one to -M and -C.  To compensate
   for this change, the default break score is also changed to
   match that of the default for rename/copy.

 - The code would have crashed with division by zero when trying
   to break an originally empty file.

 - Contrary to what the comment said, the algorithm was breaking
   small files, only to later merge them together.

Signed-off-by: Junio C Hamano <redacted>

  Hello,

  what's up with those three fixes? Were they pointed out to be wrong
and thrown away in another thread, are they on hold or just dropped?
Should I just apply them to git-pb?

  Thanks,

-- 
				Petr "Pasky" Baudis
Stuff: http://pasky.or.cz/
C++: an octopus made by nailing extra legs onto a dog. -- Steve Taylor