merge revision(s) 49223: [Backport #10732]
* lib/rdoc/text.rb (expand_tabs): get rid of infinite loop with CR. should check if substitution occurred too. [ruby-dev:48813] [Bug #10732]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@49327 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
merge revision(s) 49223: [Backport #10732]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_2@49327 b2dd03c8-39d4-4d8f-98ff-823fe69b080e