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