# File languages-statistics.rb, line 684
        def launch(command, argument, error_message)
                begin
                        if fork_is_available? then
                                process_id = fork do
                                        exec(command, argument)
                                end
                                Process.detach(process_id)
                        elsif is_windows? then
                                succeeded = system('start', command, argument)
                                if not succeeded then
                                        @logger.log(error_message + command)
                                end
                        else
                                exec(command, argument)
                        end
                rescue SystemCallError => exception
                        @logger.log(error_message + command + ', ' + exception.to_s )
                rescue NotImplementedError => exception
                        @logger.log(error_message + command + ', ' + exception.to_s )
                rescue Errno::ENOENT => exception
                        @logger.log(error_message + command + ', ' + exception.to_s )
                end
        end