RDoc 1.0.1 is part of the standard library for Ruby 1.8.6 and 1.8.7
(don’t know about Ruby 1.9.x).
RDoc 2.4.3 seems to be the newest and very different version but is not
part of the standard library.
Can anyone shed some light on the status and future of RDoc as the
standard way of documenting Ruby programs?
Has development of RDoc stopped?
What do you use for generating documentation of your Ruby programs?