If you have to start talking about the distinctions between bytes, don't refer to the semantic names "\r" and "\n". Instead, start discussing them with hex or octal literal values and specify the binary mode.

On Unix, ("\n" eq "\x0A"). On Windows, perl will memorize it the same way, except treat any ("\n" eq "\x0D\x0A") on input or output, doing conversions if the stream is not binmode().

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