False positive with Style/RedundantLineContinuation

[koppen]

Expected behavior

Running rubocop --only Style/RedundantLineContinuation on the following code:

# lib/tasks/sample.rake
namespace :sample do
  desc \
    "Here comes a long multiline description"
  task :stuff
end

should result in no offenses detected:

1 file inspected, no offenses detected

and running rubocop --only Style/RedundantLineContinuation --autocorrect should not touch the file.

Actual behavior

Running rubocop --only Style/RedundantLineContinuation flags the line continuation as being redundant (which it isn't):

Offenses:

lib/tasks/sample.rake:5:10: C: [Correctable] Style/RedundantLineContinuation: Redundant line continuation.
    desc \ ...
         ^

1 file inspected, 1 offense detected, 1 offense autocorrectable

and running safe autocorrections on it changes it to invalid syntax:

namespace :sample do
  desc
  "Here comes a long multiline description"
  task :stuff
end

which results in

$ rake -T
rake aborted!
ArgumentError: wrong number of arguments (given 0, expected 1)

RuboCop version

$ bundle exec rubocop -V
1.50.2 (using Parser 3.2.2.1, rubocop-ast 1.28.1, running on ruby 3.1.2) [arm64-darwin21]
  - rubocop-capybara 2.18.0
  - rubocop-rails 2.19.1
  - rubocop-rspec 2.20.0

While this looks a lot like a duplicate of #11783, the fix for that issue is already in 1.50.2 as far as I can tell.

[koic]

Hhm, I cannot reproduce this issue with the latest master branch and v1.50.2:

$ cat example.rb
desc \
  "Here comes a long multiline description"

$ bundle exec rubocop --only Style/RedundantLineContinuation example.rb
Inspecting 1 file
.

1 file inspected, no offenses detected

[koppen]

Hm, hang on, let me see what I am missing in the repro code

[koppen]

Ah, it needs to be wrapped in a block as well - in this case a namespace. I've updated the issue to reflect this.