Hi,

When I run the following steps on the project - Github - LightTable
I noticed that the number of entries for Difffiles in Diff object is different than the number of entries in the stats[:total] for the Diff object.

$rubygit_gem_repo = Git.open(git_repo_path, :log => Logger.new(STDOUT))
commit_list = $rubygit_gem_repo.log(nil)
commit_list_array = commit_list.to_a
commit_list_array.reverse!
prev_commit = commit_list_array[8]
next_commit = commit_list_array[9]
prev_sha = prev_commit.sha
 => "2c9b866d8fd6ed45fb896ed2f9c8edf6e38f6069"
next_sha = next_commit.sha
 => "ce8a4f0a910f58acaaf4f8c8a964afdf03f16d37"
diff = diff_bw_commits.to_a
puts diff.size
 => 137
puts diff_bw_commits.stats[:total]
 => {:insertions=>11317, :deletions=>1245, :lines=>12562, :files=>134}

I went further to find the inconsistency and found that the file names are incorrect in both cases - i.e. in the stats object and the Difffile objects.
I've attached the file names in the following Gist - https://gist.github.com/silverSpoon/3aeb985e56b37583c08a

The exact problem is also present in other open-source projects too, such as
https://github.com/basho/riak.git
https://github.com/thinkaurelius/titan.git
https://github.com/atom/atom.git

I can pin-point the exact commits for these projects too, if that helps.