merge revision(s) bbe5ec78463f8d6ef2e1a3571f17357a3d9ec8e4: [Backport #18994]

	rb_int_range_last: properly handle non-exclusive range

	[Bug #18994]
	---
	 range.c                           | 8 ++++----
	 spec/ruby/core/range/last_spec.rb | 6 ++++++
	 2 files changed, 10 insertions(+), 4 deletions(-)

1 files changed, 6 insertions, 0 deletions

diff --git a/spec/ruby/core/range/last_spec.rb b/spec/ruby/core/range/last_spec.rb
index d7ef776b42..6698686dd5 100644
--- a/spec/ruby/core/range/last_spec.rb
+++ b/spec/ruby/core/range/last_spec.rb
@@ -8,6 +8,12 @@ describe "Range#last" do
     (1..5).last(3).should == [3, 4, 5]
   end
 
+  ruby_bug '#18994', '2.7'...'3.2' do
+    it "returns the specified number if elements for single element inclusive range" do
+      (1..1).last(1).should == [1]
+    end
+  end
+
   it "returns an empty array for an empty Range" do
     (0...0).last(2).should == []
   end