Issue #14130 has been updated by mame (Yusuke Endoh).


@jeremyevans0 Completely agreed.

Matz says that it is a bug to split keywords depending upon whether the key is Symbol or non-Symbol.  (The behavior was introduced without matz's confirmation.)  So I think it is okay that the behavior of Ruby 2.7 slightly changes.

----------------------------------------
Bug #14130: Keyword arguments are ripped from the middle of hash if argument have default value
https://bugs.ruby-lang.org/issues/14130#change-81302

* Author: zverok (Victor Shepelev)
* Status: Open
* Priority: Normal
* Assignee: nobu (Nobuyoshi Nakada)
* Target version: 
* ruby -v: 
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN
----------------------------------------
Here is the code:

```ruby
def test1(source = {}, **opts)
  puts "SOURCE: #{source}, OPTS: #{opts}"
end

def test2(source, **opts)
  puts "SOURCE: #{source}, OPTS: #{opts}"
end

puts "No source"
test1(length: 2000) 
# 1. SOURCE: {}, OPTS: {:length=>2000} -- OK, it is reasonable.
test2(length: 2000) 
# 2. SOURCE: {:length=>2000}, OPTS: {} -- Exactly as expected.

puts
puts "Source is mixed hash"
test1('River name' => 'Mississippi', length: 2000, 'Country' => 'USA')
# 3. SOURCE: {"River name"=>"Mississippi", "Country"=>"USA"}, OPTS: {:length=>2000} -- It is already a bit weird
test2('River name' => 'Mississippi', length: 2000, 'Country' => 'USA')
# 4. SOURCE: {"River name"=>"Mississippi", :length=>2000, "Country"=>"USA"}, OPTS: {} -- The most weird thing!
```

My concern is cases (3) and (4). Ripping keyword argument from what from any logic looks like a _middle_ of a hash (3) is already pretty strange. But the fact that this behavior depends on whether first argument has or has not default value (3 vs 4) clearly looks like some bug?

Checked on several recent versions, including `ruby 2.5.0dev (2017-09-11 trunk 59836) [x86_64-linux]` (the last that is available on my RVM), behavior is consistent between them.



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