How to omit the outer braces around an implicit options hash in Rubocop?

Question

Rubocop does not swear at code where a hash with parentheses is passed to the method parameter, for example:

user.set({ name: 'John', age: 45, permissions: { read: true } })

I would like him to consider only such lines as correct:

user.set(name: 'John', age: 45, permissions: { read: true })

I found this issue. Does this mean that I will not be able to configure rubocop for this?

Answer 1

Since the keyword arguments changes in ruby 2.7 and 3.0, the 2 are no longer equivalent.

Sometimes the curly braces are required for the method to understand the arguments correctly.

Example:

def foo(x = {}, y: 1)
  puts x.inspect
  puts y.inspect
end

foo({y: 2}) # {:y=>2}; 1
foo(y: 2) # {}; 2

This is why the option was removed from Rubocop in the issue that you found and why it is unlikely to be re-added.