In cases where this option is set to `true`, the option is redundant and can
be safely removed; otherwise, the corresponding `*_url` helper should be
used instead.
Fixes#17294.
See also #17363.
[Dan Olson, Godfrey Chan]
This reverts commit 9d05d6de52, reversing
changes made to 0863c9248f.
The change in the behaviour reported at #16958 doesn't exist since 4.0
and 4.1 works in the same way
When named route that is nested is used in 3.2.13
Example `routes.rb`:
```
resources :nested do
resources :builder, :controller => 'nested/builder'
end
```
In 3.2.12 and 3.2.12 this named route would work:
```
nested_builder_path(:last_step, :nested_id => "foo")
```
Generating a url that looks like `/nested/foo/builder/last_step`. This PR fixes the regression when building urls via the optimized helper. Any explicit keys set in the options are removed from the list of implicitly mapped keys.
Not sure if this is exactly how the original version worked, but this fixes this use case regression.
