results.rb in roby-0.8.0

- old
+ new

@@ -1,15 +1,16 @@
 require 'roby'
+require 'fileutils'
 Roby.app.setup
 app = Roby.app
 
 # Check there are actually files in the log/ directory
 if Dir.enum_for(:glob, File.join(app.log_dir, "*")).to_a.empty?
     puts "no files in #{app.log_dir}, nothing to do"
     exit 0
 end
 
-user_path = ARGV.shift
+user_path = ARGV.shift || ''
 final_path = Roby::Application.unique_dirname(Roby.app.results_dir, user_path)
 puts "moving #{app.log_dir} to #{final_path}"
 FileUtils.mv app.log_dir, final_path
 