It wants to remove parens that are needed to keep precedence right.
Expected behaviorlhs = {foo: 1}
rhs = {bar: 2}
if (lhs in {foo:}) \
&& (rhs in {bar:})
puts 32
else
puts 23
end
$ ruby rubocop/redundant_parens.rb
32
$ bundle exec rubocop -A rubocop/redundant_parens.rb
Inspecting 1 file
F
Offenses:
rubocop/redundant_parens.rb:1:1: C: [Corrected] Style/FrozenStringLiteralComment: Missing frozen string literal comment.
lhs = {foo: 1}
^
rubocop/redundant_parens.rb:3:4: C: [Corrected] Style/RedundantParentheses: Don't use parentheses around a one-line pattern matching.
if (lhs in {foo:}) \
^^^^^^^^^^^^^^^
rubocop/redundant_parens.rb:4:7: C: [Corrected] Style/RedundantParentheses: Don't use parentheses around a one-line pattern matching.
&& (rhs in {bar:})
^^^^^^^^^^^^^^^
rubocop/redundant_parens.rb:5:4: F: Lint/Syntax: unexpected token tANDOP
(Using Ruby 3.3 parser; configure using TargetRubyVersion parameter, under AllCops)
&& rhs in {bar:}
^^
rubocop/redundant_parens.rb:7:1: F: Lint/Syntax: unexpected token kELSE
(Using Ruby 3.3 parser; configure using TargetRubyVersion parameter, under AllCops)
else
^^^^
1 file inspected, 5 offenses detected, 3 offenses corrected
$ ruby rubocop/redundant_parens.rb
rubocop/redundant_parens.rb: --> rubocop/redundant_parens.rb
expected `then` or `;` or '\n'cannot parse the expression
> 4 if lhs in {foo:} \
> 5 && rhs in {bar:}
> 6 puts 32
> 7 else
> 8 puts 23
> 9 end
rubocop/redundant_parens.rb:5: syntax error, unexpected &&, expecting `then' or ';' or '\n' (SyntaxError)
&& rhs in {bar:}
^~
$ bundle exec rubocop -V
1.76.0 (using Parser 3.3.8.0, Prism 1.4.0, rubocop-ast 1.45.0, analyzing as Ruby 3.3, running on ruby 3.3.8) [arm64-darwin24]
- rubocop-minitest 0.38.1
- rubocop-performance 1.25.0
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