[ruby/irb] Remove misleading documentation (https://github.com/ruby/irb/pull/906)
https://github.com/ruby/irb/issues/904
https://github.com/ruby/irb/commit/89bca01bba
[ruby/irb] Remove misleading documentation
(https://github.com/ruby/irb/pull/906)
https://github.com/ruby/irb/issues/904
https://github.com/ruby/irb/commit/89bca01bba