Proposed resolution:

This wording is relative to N4618.

1. Add to the synopsis of <iterator>:

   
   template <class Container> back_insert_iterator(Container&) -> back_insert_iterator<Container>;
   template <class Container> front_insert_iterator(Container&) -> back_insert_iterator<Container>;
   template <class Container> insert_iterator(Container&, typename Container::iterator) -> insert_iterator<Container>;
   

[ 2017-07 Toronto Thurs Issue Prioritization ]

After the core changes in Kona, these guides are no longer necessary; the implicit ones are sufficient.

The three insert iterators should each have an instantiation guide to initialize from a container.

Proposed change:

Add to the <iterator> header synopsis:

template <class Container>
back_insert_iterator(Container&) -> back_insert_iterator<Container>;
template <class Container>
front_insert_iterator(Container&) -> back_insert_iterator<Container>;
template <class Container>
insert_iterator(Container&, typename Container::iterator) -> insert_iterator<Container>;