LineCache is a module for reading and caching lines. This may be useful for example in a debugger where the same lines are shown many times. This version works only with a patched version of Ruby 1.9.2 or 1.9.3 and rb-threadframe.

rb-trace adds a trace_hook object, translates hooks bitmasks to Ruby sets and vice versa, and extends set_trace_func() to allow ignore specified frames or functions.