[ruby-core:98322] [Ruby master Bug#16853] calling bla(hash, **kw) with a string-based hash passes the strings into **kw (worked < 2.7)

Issue #16853 has been updated by jeremyevans0 (Jeremy Evans).

Status changed from Open to Rejected

This change was deliberate and mentioned in the 2.7.0 release announcement:

```
Non-symbols are allowed as keyword argument keys if the method accepts arbitrary keywords. [Feature #14183]

def foo(**kw); p kw; end; foo("str" => 1) #=> {"str"=>1}
```

If you want to pass a positional hash in 2.7+, you have to use a hash instead of keywords:

```ruby
def bla(hash = {}, **kw)
    puts "H: #{hash}"
    puts "K: #{kw}"
end

bla({"some" => "string"})
# H: {"some"=>"string"}
# K: {}
```

----------------------------------------
Bug #16853: calling bla(hash, **kw) with a string-based hash passes the strings into **kw (worked < 2.7)
https://bugs.ruby-lang.org/issues/16853#change-85561

* Author: sylvain.joyeux (Sylvain Joyeux)
* Status: Rejected
* Priority: Normal
* ruby -v: 2.7.1p83
* Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN
----------------------------------------
The following code

~~~
def bla(hash = {}, **kw)
    puts "H: #{hash}"
    puts "K: #{kw}"
end

bla "some" => "string"
~~~

**silently** outputs the following (no warnings about deprecation of keyword parameters-from-hash)

~~~
H: {}
K: {"some"=>"string"}
~~~

While 2.6.5 (and versions before it) gave

~~~
H: {"some"=>"string"}
K: {}
~~~

I would expect "the warning" that started appearing in 2.7, and **definitely** not having strings in a keyword argument hash.



-- 
https://bugs.ruby-lang.org/

Unsubscribe: <mailto:[e-mail]?subject=unsubscribe>
<http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>