Awesome. Debugging has been a small annoyance for a while now. Even just being able to set a break point and step through incrementally is a huge step up from nothing.

Cool stuff. I played around with SublimeText's SublimeGDB package and now have a visual way to set/maintain breakpoints.

http://www.simianlogicstudios.com/2012/09/20/rubymotion-subl...

Somebody more familiar with GDB could probably get the SublimeGDB package to just hook straight into RM's debug builds.

As I understand GDB is not great, is this true with Ruby and would Clang's improvements be relevant?

GDB is the venerable veteran with literally decades of experience baked in. It's good for most of what you would want to do. LLDB (the debugger part of the LLVM project, of which Clang is the compiler part) has made some interesting strides, but still has a way to go to catch up with GDB, I think.

Love it ++

Great job!