Yes. http://nodeguide.com/style.html#line-length

If only there was a tool to fix core objects that were tinkered with. Something like... wait. Monkey patching!

But seriously, at his Q&A session on EuRuKo 2010 Matz mentioned that monkey patching issues are going to be addressed in Ruby 2.0. http://nuclearsquid.com/writings/euruko-day2.html