while ($offset < @$self) {
my $link = substr $self->[$offset], 0, $length;
if ($context) {
- my $trim = 1;
+ # take a value slightly before the current offset
my $before = $offset > $context ? $self->[$offset - $context] : '.';
+ # see how much of it matches the current link
+ my $trim = 1;
for my $match (split //, $before) {
scalar $link =~ /\G\Q$match/g or last;
$trim++;
}
+ # truncate link upto where the earlier value starts to differ
substr($link, $trim) = '' unless $trim > length $link;
}