CAT 018

CAT-018 — String#downcase == → compare

Field	Value
Severity	hint
Confidence	medium
Auto-fix	✅

String#downcase == → compare — Use case-insensitive comparison instead of downcase + == to avoid allocating a new string.

Bad code

str.downcase == "hello"

Good code

str.compare("hello", case_insensitive: true)