def ls_tree(options, treeish, *paths)
      sha = rev_parse({}, treeish)
      ruby_git.ls_tree(sha, paths.flatten, options.delete(:r))
    rescue Grit::GitRuby::Repository::NoSuchShaFound
      ''
    end
def ls_tree(options, treeish, *paths)
      sha = rev_parse({}, treeish)
      ruby_git.ls_tree(sha, paths.flatten, options.delete(:r))
    rescue Grit::GitRuby::Repository::NoSuchShaFound
      ''
    end
lib/grit/tree.rb:16:      output = repo.git.ls_tree({}, treeish, *paths)