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$> ./last_word "FOR PONY" | cat -e
PONY$
$> ./last_word "this ... is sparta, then again, maybe not" | cat -e
not$
$> ./last_word " " | cat -e
$
$> ./last_word "a" "b" | cat -e
$
$> ./last_word " lorem,ipsum " | cat -e
lorem,ipsum$
$>
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