Make Haml::Util.caller_info work w/some weird Rubinius formatting.

lib/haml/util.rb

@@ -219,6 +219,8 @@ module Haml
     def caller_info(entry = caller[1])
       info = entry.scan(/^(.*?):(-?.*?)(?::.*`(.+)')?$/).first
       info[1] = info[1].to_i
+      # This is added by Rubinius to designate a block, but we don't care about it.
+      info[2].sub!(/ \{\}\Z/, '') if info[2]
       info
     end
 

test/haml/util_test.rb

@@ -211,6 +211,7 @@ class UtilTest < Test::Unit::TestCase
     assert_equal(["(haml)", 12, "blah"], caller_info("(haml):12: in `blah'"))
     assert_equal(["", 12, "boop"], caller_info(":12: in `boop'"))
     assert_equal(["/tmp/foo.rb", -12, "fizzle"], caller_info("/tmp/foo.rb:-12: in `fizzle'"))
+    assert_equal(["/tmp/foo.rb", 12, "fizzle"], caller_info("/tmp/foo.rb:12: in `fizzle {}'"))
   end
 
   def test_def_static_method