sprintf.c: hash default value

* sprintf.c (rb_str_format): respect default value of a hash.  no
  longer raises KeyError unless the default value of the hash is
  nil.  [ruby-core:71354] [Bug #11661]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@52530 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/test/ruby/test_sprintf.rb b/test/ruby/test_sprintf.rb
index 15c809c695..97eb4809c4 100644
--- a/test/ruby/test_sprintf.rb
+++ b/test/ruby/test_sprintf.rb
@@ -409,4 +409,10 @@ class TestSprintf < Test::Unit::TestCase
       assert_equal(enc, e.message.encoding)
     end
   end
+
+  def test_named_default
+    h = Hash.new('world')
+    assert_equal("hello world", "hello %{location}" % h)
+    assert_equal("hello world", "hello %<location>s" % h)
+  end
 end