Grammar that contains umlaut literal fails to initialize

[Roger Braun]

    grammar TestGrammar
      rule fails
         "ä"
      end
    end

This fails when I try to load it with Ruby 1.9.2, giving the error:
ArgumentError: Invalid events for length 66

This works with 1.8.7.

[Michael Jackson]

This should be fixed on 1.9.2 in this commit.

[Roger Braun]

It is, thanks!