Hash#dup for kwsplat arguments
Hash#dup
On f(*a, **kw) method calls, a rest keyword parameter is identically same Hash object is passed and it should make #duped Hahs.
f(*a, **kw)
#dup
fix https://bugs.ruby-lang.org/issues/19526
Hash#dupfor kwsplat argumentsOn
f(*a, **kw)method calls, a rest keyword parameter is identicallysame Hash object is passed and it should make
#duped Hahs.fix https://bugs.ruby-lang.org/issues/19526