Add documentation for the Kernel#warn :uplevel keyword
[ruby-core:84574] [Bug #14264] Author: Jeremy Evans code@jeremyevans.net
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62018 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Add documentation for the Kernel#warn :uplevel keyword
[ruby-core:84574] [Bug #14264]
Author: Jeremy Evans code@jeremyevans.net
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@62018 b2dd03c8-39d4-4d8f-98ff-823fe69b080e