False positive of `Style/RedundantLineContinuation`

[Ryo Nakamura]

Expected behavior

The following code should not be in violation because removing the backslash would change the meaning.

def foo
  return \
    "foo"
end

Actual behavior

It would violate Style/RedundantLineContinuation, then would be autocorrected to:

def foo
  return
  "foo"
end

Steps to reproduce the problem

Run rubocop on the example code above like this:

$ bundle exec rubocop -A example.rb

Offenses:

example.rb:2:9: C: [Corrected] Layout/TrailingWhitespace: Trailing whitespace detected.
  return 
        ^
example.rb:2:10: C: [Corrected] Style/RedundantLineContinuation: Redundant line continuation.
  return \ ...
         ^
example.rb:3:3: W: Lint/UnreachableCode: Unreachable code detected.
  "foo"
  ^^^^^
example.rb:3:5: C: [Corrected] Layout/IndentationConsistency: Inconsistent indentation detected.
    "foo"
    ^^^^^

1 file inspected, 4 offenses detected, 3 offenses corrected

RuboCop version

1.63.2 (using Parser 3.3.0.5, rubocop-ast 1.31.2, running on ruby 2.7.8) [x86_64-linux]
  - rubocop-capybara 2.18.0
  - rubocop-rails 2.9.1
  - rubocop-rspec 2.2.0