Rubocop: Layout/SpaceBeforeBrackets: a space is incorrectly added to `strip_whitespace % w[name email]`

[oanstein]

Expected behavior

Does noting to before_validation { to_downcase %w[email] }

Actual behavior

Layout/SpaceBeforeBrackets: a space is incorrectly added to before_validation { to_downcase %w[email] } => before_validation { to_downcase % w[email] }

Steps to reproduce the problem

Add before_validation { to_downcase %w[email] }to model file

RuboCop version

$ [bundle exec] rubocop -V
1.7.0 (using Parser 2.7.2.0, rubocop-ast 1.3.0, running on ruby 2.7.2 x86_64-linux)
  - rubocop-performance 1.9.1
  - rubocop-rails 2.9.1
  - rubocop-rspec 2.1.0

[zhuravel]

Another example that should not generate a warning:

link_to [@site, person] do
  content_tag(:span, person.email)
end

[6temes]

Actually, this fails with any method that accepts an array as params, if not using parenthesis (which is quite common in DSLs)