From df37e7ec6afd25d57679dc37999a36887d2247ca Mon Sep 17 00:00:00 2001
From: Mischa POSLAWSKY <perl@shiar.org>
Date: Thu, 12 Nov 2009 18:23:10 +0100
Subject: [PATCH] XXX: omit first link start

---
 lib/List/Index.pm |  3 ++-
 t/10-ranges.t     | 20 ++++++++++----------
 2 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/lib/List/Index.pm b/lib/List/Index.pm
index 00f2bdb..e30beef 100644
--- a/lib/List/Index.pm
+++ b/lib/List/Index.pm
@@ -45,10 +45,11 @@ sub ranges {
 		my ($link, $lastchar) = $links[$i + 1]->[0] =~ /(.*)(.)/;
 		$link .= $lastchar eq 'a' ? '.' : chr( ord($lastchar) - 1 )
 			unless $lastchar eq '.';
-		next if $link eq $links[$i]->[0];
+		next if $link eq $links[$i]->[0] and $i;
 		$links[$i]->[1] = $link;
 	}
 	$links[-1]->[1] = '';
+	$links[0]->[0] = '';
 
 	return \@links;
 }
diff --git a/t/10-ranges.t b/t/10-ranges.t
index feedb14..2348fca 100644
--- a/t/10-ranges.t
+++ b/t/10-ranges.t
@@ -13,23 +13,23 @@ ok(eval { List::Index->VERSION(1) }, 'version 1.00 compatibility');
 my @uniform = 'a'..'z';
 ok(my $index = List::Index->new(\@uniform), 'object (single-char values)');
 is_deeply(\@uniform, ['a'..'z'], 'original data unaltered');
-is_deeply($index->ranges, [['a','']], 'single page');
-is_deeply($index->ranges({pages => 3}), [map { [split /-/, $_, 2] } qw(
-	a-h i-q r-
+is_deeply($index->ranges, [['','']], 'single page');
+is_deeply($index->ranges({pages => 3}), [map { [split /-/, $_, 3] } qw(
+	-h i-q r-
 )], 'given pages');
 is_deeply($index->ranges({pagesize => @uniform / 2.1}), [map { [split /-/, $_, 2] } qw(
-	a-h i-q r-
+	-h i-q r-
 )], 'equivalent pagesize');
 }
 
 {
 ok(my $index = List::Index->new(['aa'..'zz', 1..193]), 'non-alphabetic values (uniform)');
 is_deeply($index->ranges, [map { [split /-/, $_, 2] } qw(
-	. ..-. .. ...-.
+	-. ..-. .. ...-.
 	a-bv bw-dr ds-fn fo-hk hl-jg jh-k l-m n-ov ow-qr qs-sn so-uk ul-wg wh-x y-
 )], 'default ranges');
 is_deeply($index->ranges({pagesize => 300}), [map { [split /-/, $_, 2] } qw(
-	.-c d-ov ow-
+	-c d-ov ow-
 )], 'large pagesize');
 }
 
@@ -38,16 +38,16 @@ ok(my $index = List::Index->new([qw(
 	baa1 baa2  baa3 baaa  bbc cbc  daaa ea  eaaa zed
 )]), 'variable length values');
 is_deeply($index->ranges({pagesize => 2, context => 0}), [
-	map { [split /-/, $_, 2] } qw(baa.-baa baa.-bbb bbc-daa. daaa-eaa. eaaa-)
+	map { [split /-/, $_, 2] } qw(-baa baa.-bbb bbc-daa. daaa-eaa. eaaa-)
 ], 'no context');
 is_deeply($index->ranges({pagesize => 2}), [
-	map { [split /-/, $_, 2] } qw(b-baa baa.-ba bb-c d-ea. eaa-)
+	map { [split /-/, $_, 2] } qw(-baa baa.-ba bb-c d-ea. eaa-)
 ], 'default context');  # context should be 1
 is_deeply($index->ranges({pagesize => 2, context => 2}), [
-	map { [split /-/, $_, 2] } qw(b-a b-ba bb-c d e-)
+	map { [split /-/, $_, 2] } qw(-a b-ba bb-c d e-)
 ], 'overlap');  # first item equals second due to large context
 is_deeply($index->ranges({pagesize => 2, length => 1}), [
-	map { [split /-/, $_, 2] } qw(b-a b-a b-c d e-)
+	map { [split /-/, $_, 2] } qw(-a b-a b-c d e-)
 ], 'single char');
 
 #pp($index->ranges({pagesize => 2, context => 2, length => 1}));
-- 
2.30.0