This ripl plugin automatically starts the debugger whenever an evaled input throws an exception. The debugger is started at the source of the exception.
If on ruby 1.8, install the gem with:
gem install ripl-debug ruby-debug
If on ruby 1.9, install the gem with:
gem install ripl-debug ruby-debug19
To debug some suspect code
$ ripl debug -rsome/buggy/code
This plugin can be turned off in the console at any time with:
>> Ripl.config[:debug] = false
This gem doesn't have ruby-debug as a dependency since ruby-debug is split across two gems (ruby-debug and ruby-debug19), dependent on ruby versions. This gem will work with either one.