XXX: omit duplicates (overlaps)

[perl/list-index.git] / lib / List / Index.pm

diff --git a/lib/List/Index.pm b/lib/List/Index.pm
index bf4e04db592dabcf488ab9a2dfd5386bbd3a4668..57027fa685656c8608c2bcd0a54a21fb93f264f9 100644 (file)
--- a/lib/List/Index.pm
+++ b/lib/List/Index.pm
@@ -24,7 +24,7 @@ sub ranges {
 
        $pagesize = @$self / $pages;
        my $offset = $pagesize;
-       my @links = (['']);
+       my @links = ('');
        while ($offset < @$self) {
                my $link = substr $self->[$offset], 0, $length;
                if ($context) {
@@ -57,10 +57,12 @@ sub ranges {
                        }
                }
 
-               push @links, [$link];
+               push @links, $link;
                $offset += $pagesize;
        }
 
+       use List::MoreUtils 'uniq';
+       @links = map { [$_] } uniq @links;
        for my $i (0 .. $#links - 1) {
                my ($link, $lastchar) = $links[$i + 1]->[0] =~ /(.*)(.)/;
                $link .= $lastchar le 'a' ? '.' : chr( ord($lastchar) - 1 );