Ruby

merge revision(s) 58545,58584: [Backport #13536]

    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_4@59247 b2dd03c8-39d4-4d8f-98ff-823fe69b080e