From 319dd675faee700a9fa0485863889a661ef9dc53 Mon Sep 17 00:00:00 2001
From: Mischa POSLAWSKY <perl@shiar.org>
Date: Thu, 12 Nov 2009 17:15:32 +0100
Subject: [PATCH] XXX: omit range end if it equals start

---
 lib/List/Index.pm | 1 +
 t/10-ranges.t     | 6 +++---
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/lib/List/Index.pm b/lib/List/Index.pm
index 50e48a5..00f2bdb 100644
--- a/lib/List/Index.pm
+++ b/lib/List/Index.pm
@@ -45,6 +45,7 @@ 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];
 		$links[$i]->[1] = $link;
 	}
 	$links[-1]->[1] = '';
diff --git a/t/10-ranges.t b/t/10-ranges.t
index c5cc3e6..feedb14 100644
--- a/t/10-ranges.t
+++ b/t/10-ranges.t
@@ -25,7 +25,7 @@ is_deeply($index->ranges({pagesize => @uniform / 2.1}), [map { [split /-/, $_, 2
 {
 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 /-/, $_, 2] } qw(
@@ -44,10 +44,10 @@ is_deeply($index->ranges({pagesize => 2}), [
 	map { [split /-/, $_, 2] } qw(b-baa baa.-ba bb-c d-ea. eaa-)
 ], 'default context');  # context should be 1
 is_deeply($index->ranges({pagesize => 2, context => 2}), [
-	map { [split /-/, $_, 2] } qw(b-a b-ba bb-c d-d e-)
+	map { [split /-/, $_, 2] } qw(b-a b-ba bb-c d e-)
 ], 'overlap');  # first item equals second due to large context
 is_deeply($index->ranges({pagesize => 2, length => 1}), [
-	map { [split /-/, $_, 2] } qw(b-a b-a b-c d-d e-)
+	map { [split /-/, $_, 2] } qw(b-a b-a b-c d e-)
 ], 'single char');
 
 #pp($index->ranges({pagesize => 2, context => 2, length => 1}));
-- 
2.30.0