X-Git-Url: http://git.shiar.net/gitweb.cgi/perl/list-index.git/blobdiff_plain/cbd8812884e40f965709d50f5e5b0a7bc1fd97b3..a0438ade03450c7141821f7f8aa25d3a8e39d849:/lib/List/Index.pm

diff --git a/lib/List/Index.pm b/lib/List/Index.pm
index 5b46313..4a21189 100644
--- a/lib/List/Index.pm
+++ b/lib/List/Index.pm
@@ -28,9 +28,9 @@ sub ranges {
 	while ($offset < @$self) {
 		my $link = substr $self->[$offset], 0, $length;
 		if ($context) {
-			{
+			if ($offset > $context - 1) {
 				# take a value slightly before the current offset
-				my $before = $offset > $context ? $self->[$offset - $context] : '.';
+				my $before = $self->[$offset - $context - 1];
 				# see how much of it matches the current link
 				my $trim = 1;
 				for my $match (split //, $before) {