If the last element of LIST does not end in a newline, the
            current script line number and input line number (if any) are
            also printed, and a newline is supplied. Note that the "input
            line number" (also known as "chunk") is subject to whatever
            notion of "line" happens to be currently in effect, and is also
            available as the special variable $.. See "$/" in perlvar and
            "$." in perlvar.