Nu seems to have a certain selection of symbol-level syntax. (Suffering succotash.) A symbol beginning with * is a rest arg, a symbol beginning with __ becomes a gensym during macroexpansion, and a symbol beginning with @ refers to a class attribute. Objective-C message call syntax like (a sendMessageWithArg:b) seems to be used, and I bet that's part of the reader.
Nu has a seemingly monolithic class definition syntax, which probably compiles straightforwardly to Objective-C classes, but I haven't found documentation about it.
Yes indeedy. And as already mentioned in that thread, I liked the name enough to keep it. I figured that since Arc/Nu is a compiler for the Arc language, rather than a full blown Objective-C/whatever Lisp, the confusion should be fairly minimal...
Incidentally, my new language that I've been steadily working on is called "Nulan" which is short for "Nu language" :P
* : It's worked for a while now but I still need to get the parser into a good state... turns out, syntax is hard!