From: Intransition <transfire@...>
Date: 2010-05-07T08:17:53+09:00
Subject: rdoc/ri issue

$ ri "String#to_s"
/usr/lib/ruby/gems/1.8/gems/rdoc-2.5.8/lib/rdoc/ri/driver.rb:909:in
`load_method': undefined method `[]' for nil:NilClass (NoMethodError)
	from /usr/lib/ruby/gems/1.8/gems/rdoc-2.5.8/lib/rdoc/ri/driver.rb:
934:in `load_methods_matching'
	from /usr/lib/ruby/gems/1.8/gems/rdoc-2.5.8/lib/rdoc/ri/driver.rb:
788:in `find_methods'
	from /usr/lib/ruby/gems/1.8/gems/rdoc-2.5.8/lib/rdoc/ri/driver.rb:
787:in `each'
	from /usr/lib/ruby/gems/1.8/gems/rdoc-2.5.8/lib/rdoc/ri/driver.rb:
787:in `find_methods'
	from /usr/lib/ruby/gems/1.8/gems/rdoc-2.5.8/lib/rdoc/ri/driver.rb:
928:in `load_methods_matching'
	from /usr/lib/ruby/gems/1.8/gems/rdoc-2.5.8/lib/rdoc/ri/driver.rb:
642:in `display_method'
	from /usr/lib/ruby/gems/1.8/gems/rdoc-2.5.8/lib/rdoc/ri/driver.rb:
685:in `display_name'
	from /usr/lib/ruby/gems/1.8/gems/rdoc-2.5.8/lib/rdoc/ri/driver.rb:
710:in `display_names'
	from /usr/lib/ruby/gems/1.8/gems/rdoc-2.5.8/lib/rdoc/ri/driver.rb:
707:in `each'
	from /usr/lib/ruby/gems/1.8/gems/rdoc-2.5.8/lib/rdoc/ri/driver.rb:
707:in `display_names'
	from /usr/lib/ruby/gems/1.8/gems/rdoc-2.5.8/lib/rdoc/ri/driver.rb:
1021:in `run'
	from /usr/lib/ruby/gems/1.8/gems/rdoc-2.5.8/lib/rdoc/ri/driver.rb:
309:in `run'
	from /usr/lib/ruby/gems/1.8/gems/rdoc-2.5.8/bin/ri:5
	from /usr/local/lib/site_ruby/1.8/roll/ledger.rb:118:in
`original_load'
	from /usr/local/lib/site_ruby/1.8/roll/ledger.rb:118:in `load'
	from /usr/local/lib/site_ruby/1.8/roll/ledger.rb:283:in `load'
	from /usr/local/lib/site_ruby/1.8/roll/kernel.rb:32:in `load'
	from /usr/bin/ri:19