E.g. having square brackets (what happens very often in Obj-C ;)) in code blocks (indented or with "`") results in errors because it tries to parse references (or whatever the characters would do).
This is know issue; I'd sworn there was ticket opened, but can't find it right now.
Anyway, this is going to be fixed in 3.0 (I think this part already works).
Ok sorry for the duplication. I also searched for it and did't find anything. If you find the opened ticket, just close this issue here.
No problem, I'll keep this one open until then :)