Keyword arguments in [] operators

[ezrast]

Keyword arguments can be defined for the [] operator but not used:

class Foo
  def [](**kwargs)
    puts "kwargs: #{kwargs}"
  end
end

Foo.new[]            # Works as expected; prints "kwargs: {}"
Foo.new[a: 1, b: 2]  # Syntax error: expecting token 'CONST', not '1'

This syntax works in Ruby.

[asterite]

Good catch, thank you! To parse those arguments the parser was using some old logic that didn't take named args into account.

[ezrast]

Appreciate the fix, but the nodes aren't getting passed into macros properly:

macro say(arg)
    puts "{{arg}}"
end

say(foo[])           # => foo[]
say(foo[:bar])       # => foo[:bar]
say(foo[bar: :baz])  # => foo[]

[luislavena]

@ezrast looks to me a separate issue, macros behave differently. Please report a new one for this specific case.

Thank you.

[ezrast]

Aye aye, created #4004 for this.