merge revision(s) 0036648a420f945624898568bb82bc5f83195d12: [Backport #17533]

	Capture to reserved name variables if already defined [Bug #17533]

	---
	 parse.y                  |  5 +++--
	 test/ruby/test_regexp.rb | 11 +++++++++++
	 2 files changed, 14 insertions(+), 2 deletions(-)

1 files changed, 11 insertions, 0 deletions

diff --git a/test/ruby/test_regexp.rb b/test/ruby/test_regexp.rb
index b469d643f2..dc203fa82a 100644
--- a/test/ruby/test_regexp.rb
+++ b/test/ruby/test_regexp.rb
@@ -218,6 +218,17 @@ class TestRegexp < Test::Unit::TestCase
   def test_assign_named_capture_to_reserved_word
     /(?<nil>.)/ =~ "a"
     assert_not_include(local_variables, :nil, "[ruby-dev:32675]")
+
+    def (obj = Object.new).test(s, nil: :ng)
+      /(?<nil>.)/ =~ s
+      binding.local_variable_get(:nil)
+    end
+    assert_equal("b", obj.test("b"))
+
+    tap do |nil: :ng|
+      /(?<nil>.)/ =~ "c"
+      assert_equal("c", binding.local_variable_get(:nil))
+    end
   end
 
   def test_assign_named_capture_to_const