Issue #19285 has been updated by nobu (Nobuyoshi Nakada). Status changed from Open to Third Party's Issue It is about monkey patching Kernel and seems an internal document. I don't think it is useful for users. https://github.com/rubygems/rubygems/pull/6217 On the other hand, RubyGems has the document about extension of `Kernel#require` but it is ignored because it is inside a heredoc. ---------------------------------------- Bug #19285: (docs.rlo) Split stdlib and core documents https://bugs.ruby-lang.org/issues/19285#change-100919 * Author: zzak (Zak Scott) * Status: Third Party's Issue * Priority: Normal * Backport: 2.7: UNKNOWN, 3.0: UNKNOWN, 3.1: UNKNOWN, 3.2: UNKNOWN ---------------------------------------- It seems we merge all of the docs for stdlib and core into one for docs.ruby-lang.org, this creates weirdness like [Kernel](https://docs.ruby-lang.org/en/master/Kernel.html) which includes monkey patches for rubygems for example. -- https://bugs.ruby-lang.org/