It matches /Count:\s+(\d+)/, so it would add the value to ... [emphasis added]

I agree with your analysis, except I would say "It matches /Count:\s+(\d+)/, so it would assign the value to ... (overwriting the previous value)." (The phrase "add the value to" suggests something like the  += operation (update: but the OPed code does an assign).)

Give a man a fish:  <%-{-{-{-<

In reply to Re^2: Iterating and pattern matching on input file by AnomalousMonk
in thread Iterating and pattern matching on input file by bartrad

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