If you use a negative number for the third argument of split you will get the same results for both cases:
$ perl -e'
my $line ="A\tB\tC\tD\t\t\t\t\n";
print "Test string line: $line";
print "Split without chomp: ";
count_fields( $line );
print "Split _after_ chomp: ";
chomp $line;
count_fields( $line );
exit 0;
sub count_fields {
my ($line) = @_;
my @x = split /\t/, $line, -1;
my $count = @x;
print "$count fields.\n";
}
'
Test string line: A B C D
Split without chomp: 8 fields.
Split _after_ chomp: 8 fields.
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