Rosie appears to be an acknowledgment that we shouldn't try to use a regular language when the problem requires a context free language.
wdkrnls
This looks quite promising to me. I've loved using TXR in the past for such functionality. However, I would really rather have the TXR pattern language as a library embedded inside the main programming language I am using rather than having to remember both TXR and TXR lisp. At first glance, Rosie seems to offer this approach. Although, I feel like the elegance of TXR syntax and semantics is hard to beat.