CAT 047

CAT-047 — upcase.downcase / downcase.upcase no-op

Field	Value
Severity	hint
Confidence	high
Auto-fix	❌

upcase.downcase / downcase.upcase no-op — Calling upcase then downcase (or vice versa) is a no-op. Remove unnecessary calls.

Bad code

str.upcase.downcase
str.downcase.upcase