Embedded Ruby Debugger

Hi all,

we are using Ruby from within of our application as a scripting toolkit,
Ruby and the application is interfaced by SWIG. Ruby script is executed
from within of our application by Ruby interpreter 1.9, which is
compiled into our application binary.

We would like to add to our application a debugging window, where
developer could place breakpoints into his scripts, step and see
variables. Has anybody experience with this?

Searching the web did not bring me any hint.

Thank you in advance.
Jan Mach