Style/FormatStringToken false positive for double %

[svyatov]

Rubocop sees Style/FormatStringToken in escaped % sign.

format '%<hit_rate>6.2f%%', hit_rate: 12.34
# => " 12.34%"

---

Expected behavior

Rubocop must not recognize Style/FormatStringToken offense here.

Actual behavior

Style/FormatStringToken: Prefer annotated tokens (like %<foo>s) over unannotated tokens (like %s).
        format '%<hit_rate>6.2f%%', hit_rate: hit_rate
                               ^^

Steps to reproduce the problem

Use provided code sample.

RuboCop version

$ [bundle exec] rubocop -V
0.75.1 (using Parser 2.6.5.0, running on ruby 2.6.1 x86_64-darwin18)

[buehmann]

Thanks for the report! I am taking of this.