# File lib/rake/trace_output.rb, line 9 9: def trace_on(out, *strings) 10: sep = $\ || "\n" 11: if strings.empty? 12: output = sep 13: else 14: output = strings.map { |s| s.end_with?(sep) ? s : s + sep }.join 15: end 16: out.print(output) 17: end