CPP Fix - prevent source code parent replacement if parent is a list item

[thewheat]

Fixes #2060

• Pages that have multiple source code syntax in a shared parent will fail this code section

  devdocs/lib/docs/filters/cppref/fix_code.rb

  Lines 5 to 10 in 0c1719e

  	css('div > span.source-c', 'div > span.source-cpp').each do |node|
  	node.inner_html = node.inner_html.gsub(/<br>\n?/, "\n").gsub("\n</p>\n", "</p>\n")
  	node.parent.name = 'pre'
  	node.parent['class'] = node['class']
  	node.parent.content = node.content
  	end

  due to the node.parent.content = node.content of the first element

• Example pages

  • https://en.cppreference.com/w/cpp/io/basic_istream/get
  • https://en.cppreference.com/w/cpp/utility/to_chars
  • https://en.cppreference.com/w/cpp/language/dynamic_cast

Error in parsing

$ thor docs:page cpp /io/basic_istream/get  --verbose --debug
Request: en.cppreference.com/w/cpp/io/basic_istream/get                                                                                                               [200] [2623ms]
Filter: ApplyBaseUrl                                                                                                                                                           [0ms]
Filter: Container                                                                                                                                                              [2ms]
Filter: Cppref::FixCode                                                                                                                                                        [3ms]
~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call': undefined method `name=' for nil:NilClass (NoMethodError)

          node.parent.name = 'pre'
                     ^^^^^^^

Explanation of PR

• On looking at some of the pages it seems that the common parent is a list item (classes t-li1,t-li2,t-li3) and the usage is inline code so
  • by pass current fix_code.rb processing if we can detect this
  • and for clean_html.rb formatting use code instead of a pre block

Other pages affected

$ grep -i fix_code.rb:7 generate_cpp_source_no_changes.txt  -B3              
  https://en.cppreference.com/w/cpp/io/ios_base
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/utility/functional/not_fn
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/language/integer_literal
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/language/explicit_cast
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/io/basic_ostream/operator_ltlt
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/utility/to_chars
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/utility/variant/visit
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/memory/new/operator_delete
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/language/dynamic_cast
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/container/array/operator_cmp
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/language/storage_duration
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/language/function
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/language/static_cast
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/language/reinterpret_cast
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/language/operator_member_access
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/language/overload_resolution
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/utility/tuple/get
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/ranges/drop_view
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/algorithm/sort_heap
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/numeric/math/fma
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/container/deque/operator_cmp
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/container/forward_list/operator_cmp
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/container/set/operator_cmp
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/container/list/operator_cmp
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/container/vector/operator_cmp
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/container/multimap/operator_cmp
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/container/multiset/operator_cmp
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/container/map/operator_cmp
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/utility/tuple/operator_cmp
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/io/basic_ostream/operator_ltlt2
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/io/basic_istream/get
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'
--
  https://en.cppreference.com/w/cpp/ranges/cartesian_product_view/iterator/operator_cmp
  NoMethodError: undefined method `name=' for nil:NilClass

  ~/devdocs/lib/docs/filters/cppref/fix_code.rb:7:in `block in call'