in lib/grit/git-ruby/repository.rb [557:574]
def get_subtree(commit_sha, path)
tree_sha = get_object_by_sha1(commit_sha).tree
if path && !(path == '' || path == '.' || path == './')
paths = path.split('/')
paths.each do |pathname|
tree = get_object_by_sha1(tree_sha)
if entry = tree.entry.select { |e| e.name == pathname }.first
tree_sha = entry.sha1 rescue nil
else
return false
end
end
end
tree_sha
end