chompVARIABLEchompLISTchomp
This is a slightly safer version of chop (see below) in that it
removes only any line ending corresponding to the current value of
$/, and not just any last character. Unlike chop,
chomp returns the number of characters deleted. If $/ is
empty (in paragraph mode), chomp removes all trailing newlines
from the selected string (or strings, if chomping a LIST).