Moznion focused on improving the correctness and safety of RuboCop’s auto-correct feature in the rubocop/rubocop repository, specifically addressing the Style/RedundantRegexpArgument rule. By refining the handling of single-quote escapes in Ruby replacement strings, Moznion ensured that auto-correct would not generate invalid syntax, even in complex escaping scenarios. This work involved careful code refactoring and static code analysis using Ruby, with an emphasis on preserving language-specific escaping rules. Moznion also expanded test coverage to guard against regressions, ultimately enhancing the reliability of automated code transformations and reducing the risk of downstream issues for RuboCop users.