From a5c159ba3d07f858b3667d4c9d29d37ab8068ef3 Mon Sep 17 00:00:00 2001
From: Brian Shirai <brixen@gmail.com>
Date: Fri, 22 Mar 2013 18:16:01 -0700
Subject: [PATCH] Fixed Range#last for 1.9.

---
 kernel/common/range.rb   | 1 -
 kernel/common/range18.rb | 1 +
 kernel/common/range19.rb | 4 ++++
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/kernel/common/range.rb b/kernel/common/range.rb
index e573449e4a..8eb0bfed79 100644
--- a/kernel/common/range.rb
+++ b/kernel/common/range.rb
@@ -70,7 +70,6 @@ def inspect
   end
 
   attr_reader :end
-  alias_method :last, :end
 
   def step(step_size=1) # :yields: object
     return to_enum(:step, step_size) unless block_given?
diff --git a/kernel/common/range18.rb b/kernel/common/range18.rb
index 8bbd1b7ab0..9588ea7846 100644
--- a/kernel/common/range18.rb
+++ b/kernel/common/range18.rb
@@ -40,6 +40,7 @@ def each(&block)
   end
 
   alias_method :first, :begin
+  alias_method :last, :end
 
   protected
 
diff --git a/kernel/common/range19.rb b/kernel/common/range19.rb
index ba2e918b0d..084f462a12 100644
--- a/kernel/common/range19.rb
+++ b/kernel/common/range19.rb
@@ -51,6 +51,10 @@ def first(n=undefined)
     n.equal?(undefined) ? @begin : super
   end
 
+  def last(n=undefined)
+    n.equal?(undefined) ? @end : to_a.last(n)
+  end
+
   def max(&block)
     return super(&block) if block_given? || (@excl && !@end.kind_of?(Numeric))
     return nil if @end < @begin || (@excl && @end == @begin)