Try using /dev/tty (untested): 
open my $tty, '<', '/dev/tty';
my ($col, $row) = Term::Size::chars (defined $tty ? $tty: *STDOUT{IO})
+;

[download]

Dave.

In reply to Re: "Exporting" Terminal Size to Piped Command? by dave_the_m
in thread "Exporting" Terminal Size to Piped Command? by PetaMem

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