ripper/lexer.rb: nested indented heredoc
* ext/ripper/lib/ripper/lexer.rb (on_heredoc_dedent): fix for
nested indedented here documents, where `Elem`s are nested too.
[ruby-core:80977] [Bug #13536]
ripper/lexer.rb: nested indented heredoc
* ext/ripper/lib/ripper/lexer.rb (on_heredoc_dedent): insert
stripped leading spaces as `on_ignored_sp` elements, so that the
original source can be reconsructed.
[ruby-core:80977] [Bug #13536]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_2_3@59214 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
