parse.y: required kwarg without parentheses

* parse.y (parser_yylex): only a newline after label should be
  significant.  [ruby-core:61658] [Bug #9669]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45408 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Tue Mar 25 23:57:17 2014  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* parse.y (parser_yylex): only a newline after label should be
+	  significant.  [ruby-core:61658] [Bug #9669]
+
 Tue Mar 25 23:32:25 2014  Kazuhiro NISHIYAMA  <zn@mbf.nifty.com>
 
 	* ext/pathname/lib/pathname.rb (Pathname#join): remove unnecessary

parse.y

@@ -7017,13 +7017,16 @@ parser_yylex(struct parser_params *parser)
 #endif
 	/* fall through */
       case '\n':
-	if (IS_lex_state(EXPR_BEG | EXPR_VALUE | EXPR_CLASS | EXPR_FNAME | EXPR_DOT)) {
+	if (IS_lex_state(EXPR_BEG | EXPR_VALUE | EXPR_CLASS | EXPR_FNAME | EXPR_DOT | EXPR_LABELARG)) {
 #ifdef RIPPER
             if (!fallthru) {
                 ripper_dispatch_scan_event(parser, tIGNORED_NL);
             }
             fallthru = FALSE;
 #endif
+	    if (IS_lex_state(EXPR_LABELARG) && parser->parser_in_kwarg) {
+		goto normal_newline;
+	    }
 	    goto retry;
 	}
 	while ((c = nextc())) {

test/ruby/test_keyword.rb

@@ -335,6 +335,15 @@ class TestKeywordArguments < Test::Unit::TestCase
       end;
     end
     assert_equal(42, bug9669.foo(a: 42))
+    assert_nothing_raised(SyntaxError, bug9669) do
+      eval(<<-'end;', nil, __FILE__, __LINE__)
+        o = {
+          a:
+          1
+        }
+      end;
+    end
+    assert_equal({a: 1}, o, bug9669)
   end
 
   def test_block_required_keyword