module Rake module TraceOutput # Write trace output to output stream +out+. # # The write is done as a single IO call (to print) to lessen the # chance that the trace output is interrupted by other tasks also # producing output. def trace_on(out, *strings) sep = $\ || "\n" if strings.empty? output = sep else output = strings.map { |s| next if s.nil? s =~ /#{sep}$/ ? s : s + sep }.join end out.print(output) end end end