fix: split out logic

.github/workflows/check-reference.yml

@@ -23,6 +23,12 @@ jobs:
 
  - name: Detect references
  run: |
- for patch in $(find -name "*.patch"); do
- git -C "homebrew-core" grep -r "${patch/./}"
+ patches=$(find -name "*.patch")
+ status=0
+ for patch in $patches; do
+ if ! git -C "homebrew-core" grep -r "${patch/./}" > /dev/null; then
+ echo "$patch not needed!"
+ status=1
+ fi
  done
+ exit $status