use warnings; no warnings 'experimental::lexical_topic';
use strict;
use Test::More tests => 4;
use XS::APItest qw(underscore_length);
$_ = "foo";
is underscore_length(), 3;
$_ = "snowman \x{2603}";
is underscore_length(), 9;
my $_ = "xyzzy";
is underscore_length(), 5;
$_ = "pile of poo \x{1f4a9}";
is underscore_length(), 13;
1;