parse.y: lparen_arg statement

* parse.y (primary): allow parenthesised statement as a method
  argument.  [Feature #12686]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55965 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 0 deletions

diff --git a/test/ruby/test_syntax.rb b/test/ruby/test_syntax.rb
index ce013583be..c135cec4ea 100644
--- a/test/ruby/test_syntax.rb
+++ b/test/ruby/test_syntax.rb
@@ -827,6 +827,11 @@ eom
     end
   end
 
+  def test_parenthesised_statement_argument
+    assert_syntax_error("foo(bar rescue nil)", /unexpected modifier_rescue/)
+    assert_valid_syntax("foo (bar rescue nil)")
+  end
+
   private
 
   def not_label(x) @result = x; @not_label ||= nil end