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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| s.end_with?(sep) ? s : s + sep }.join
end
out.print(output)
end
end
end
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