ci: Use brace I/O group instead of psub

contrib/files-touched-check

@@ -3,32 +3,35 @@ export LC_ALL=C
 set -e -o pipefail
 export TZ=UTC
 
-while read -r status name; do
+git diff --no-commit-id --name-status -r "${1:-${CIRRUS_BASE_SHA}...HEAD}" \
+ | {
+ while read -r status name; do
 
- case "$name" in
- README.md) continue ;;
- .cirrus.yml) continue ;;
- contrib/*) continue ;;
- esac
-
- if [ "$status" != "A" ]; then
- echo "ERR: File status is not 'A' (for add): '$status'"
- exit 1
- fi
+ case "$name" in
+ README.md) continue ;;
+ .cirrus.yml) continue ;;
+ contrib/*) continue ;;
+ esac
 
- if [[ $name =~ ^[^/]+/[^/]+/[^/]+.SHA256SUMS(|.asc)$ ]]; then
- if [ -z "$last_prefix" ]; then
- last_prefix="$(dirname "$name")"
- continue
- elif [ "$last_prefix" = "$(dirname "$name")" ]; then
- continue
- else
- echo "ERR: Added files need to be under the same prefix: '${last_prefix}'"
- exit 1
- fi
- else
- echo "ERR: Added unknown file '$name'"
- exit 1
- fi
+ if [ "$status" != "A" ]; then
+ echo "ERR: File status is not 'A' (for add): '$status'"
+ exit 1
+ fi
 
-done < <(git diff --no-commit-id --name-status -r "${1:-${CIRRUS_BASE_SHA}...HEAD}")
+ if [[ $name =~ ^[^/]+/[^/]+/[^/]+.SHA256SUMS(|.asc)$ ]]; then
+ if [ -z "$last_prefix" ]; then
+ last_prefix="$(dirname "$name")"
+ continue
+ elif [ "$last_prefix" = "$(dirname "$name")" ]; then
+ continue
+ else
+ echo "ERR: Added files need to be under the same prefix: '${last_prefix}'"
+ exit 1
+ fi
+ else
+ echo "ERR: Added unknown file '$name'"
+ exit 1
+ fi
+
+ done
+ }