parse.y: required kwarg without parentheses

* parse.y (lex_state_e, parser_params, f_arglist, parser_yylex):
  separate EXPR_LABELARG from EXPR_BEG and let newline significant,
  so that required keyword argument can place at the end of
  argument list without parentheses.  [ruby-core:61658] [Bug #9669]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45405 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 10 insertions, 0 deletions

diff --git a/test/ruby/test_keyword.rb b/test/ruby/test_keyword.rb
index 625146b0ba..75b8f58a98 100644
--- a/test/ruby/test_keyword.rb
+++ b/test/ruby/test_keyword.rb
@@ -325,6 +325,16 @@ class TestKeywordArguments < Test::Unit::TestCase
     assert_equal([[:keyreq, :a], [:keyrest, :b]], o.method(:bar).parameters, feature7701)
     assert_raise_with_message(ArgumentError, /missing keyword/, bug8139) {o.bar(c: bug8139)}
     assert_raise_with_message(ArgumentError, /missing keyword/, bug8139) {o.bar}
+
+    bug9669 = '[ruby-core:61658] [Bug #9669]'
+    assert_nothing_raised(SyntaxError, bug9669) do
+      eval(<<-'end;', nil, __FILE__, __LINE__)
+        def bug9669.foo a:
+          return a
+        end
+      end;
+    end
+    assert_equal(42, bug9669.foo(a: 42))
   end
 
   def test_block_required_keyword