Style/RedundantLineContinuation should not look inside strings

[bquorning]

When the trailing backslash is inside a string literal, I think it needs to be disregarded by the Style/RedundantLineContinuation cop.

---

Expected behavior

I expect these two spec examples to pass in spec/rubocop/cop/style/redundant_line_continuation_spec.rb:

expect_no_offenses(<<~'RUBY')
  "foo \
    bar"
RUBY

expect_no_offenses(<<~'RUBY')
  'foo \
    bar'
RUBY

Actual behavior

The spec examples fail, suggesting to remove the trailing backslash.

Steps to reproduce the problem

See above.

RuboCop version

7c35167

[bquorning]

cc @koic, @ydah

[koic]

@bquorning Yeah, I've opened #11759 to fix the issue.