Cruby/Jruby behavior difference with block keyword arguments #6540
Description
Environment Information
- jruby 9.2.13.0 (2.5.7) 2020-08-03 9a89c94 Java HotSpot(TM) 64-Bit Server VM 25.271-b09 on 1.8.0_271-b09 +jit [darwin-x86_64]
- Darwin mac.local 20.2.0 Darwin Kernel Version 20.2.0: Wed Dec 2 20:39:59 PST 2020; root:xnu-7195.60.75~1/RELEASE_X86_64 x86_64
Other relevant info you may wish to add:
- ruby2_keywords must be used - otherwise cruby returns the same error
Expected Behavior
I extracted the following behavior from a test failure when writing rspec/rspec-mocks#1407
The below code works in every version of cruby tested by the rspec build(1.8.7-3.0.0) and jruby 1.7. It failed for jruby 9.2.13.0 and 9.1.17.0
klass = Class.new do
def a(*args, &block)
block.call(*args)
end
ruby2_keywords(:a) if respond_to?(:ruby2_keywords, true)
end
klass.new.a(kw: :arg) { |kw:| kw }
=> :arg
klass.new.a(:positional, kw: :arg) { |kw:| kw }
=> :arg
Actual Behavior
klass.new.a(kw: :arg) { |kw:| kw }
=> :arg
klass.new.a(:positional, kw: :arg) { |kw:| kw }
Traceback (most recent call last):
8: from /Users/jhottenstein/.rbenv/versions/jruby-9.2.13.0/bin/irb:13:in `<main>'
7: from org/jruby/RubyKernel.java:1189:in `catch'
6: from org/jruby/RubyKernel.java:1189:in `catch'
5: from org/jruby/RubyKernel.java:1442:in `loop'
4: from org/jruby/RubyKernel.java:1048:in `eval'
3: from (irb):10:in `evaluate'
2: from (irb):3:in `a'
1: from (irb):3:in `block in evaluate'
ArgumentError (missing keyword: kw)