@@ -0,0 +1,79 @@
+name: jlink args (PR 491 test)
+
+on:
+  push:
+    branches: [ 'pr/**' ]
+  workflow_dispatch:
+
+jobs:
+  jlink:
+    name: java ${{ matrix.java }} / ${{ matrix.args }}
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    strategy:
+      fail-fast: false
+      matrix:
+        java: [ 11, 17, 21, 25 ]
+        args: [ none, legacy, zip ]
+    env:
+      M2_REPO: ${{ github.workspace }}/build/m2-smoke
+      JRE: samples/hello-world/target/HelloWorld/jre
+
+    steps:
+      - uses: actions/checkout@v5
+
+      - uses: actions/setup-java@v5
+        with:
+          distribution: temurin
+          java-version: 17
+          cache: gradle
+
+      - name: Build and install plugin to Maven local
+        run: ./gradlew publishToMavenLocal --no-daemon "-Dmaven.repo.local=$M2_REPO"
+
+      - name: Get plugin version
+        id: plugin
+        run: echo "version=$(./gradlew properties -q --no-daemon | awk '/^version:/ {print $2}' | tr -d '\r')" >> "$GITHUB_OUTPUT"
+
+      - uses: actions/setup-java@v5
+        with:
+          distribution: temurin
+          java-version: ${{ matrix.java }}
+
+      - name: Write test POM
+        working-directory: samples/hello-world
+        run: |
+          case "${{ matrix.args }}" in
+            none)   EXTRA="" ;;
+            legacy) EXTRA="<additionalModules><additionalModule>jdk.localedata</additionalModule></additionalModules><additionalJlinkArgs><additionalJlinkArg>--include-locales=en,es</additionalJlinkArg><additionalJlinkArg>--compress=0</additionalJlinkArg></additionalJlinkArgs>" ;;
+            zip)    EXTRA="<additionalModules><additionalModule>jdk.localedata</additionalModule></additionalModules><additionalJlinkArgs><additionalJlinkArg>--include-locales=en,es</additionalJlinkArg><additionalJlinkArg>--compress=zip-0</additionalJlinkArg></additionalJlinkArgs>" ;;
+          esac
+          sed -e "s#<generateInstaller>true</generateInstaller>#<generateInstaller>false</generateInstaller>$EXTRA#" pom.xml > pom-jlink.xml
+          grep -n "generateInstaller" pom-jlink.xml
+
+      - name: Package sample app
+        id: package
+        continue-on-error: true
+        working-directory: samples/hello-world
+        run: |
+          java -version 2>&1
+          mvn -B -f pom-jlink.xml "-Dmaven.repo.local=$M2_REPO" package -Djavapackager.version=${{ steps.plugin.outputs.version }} 2>&1 | tee build.log
+          exit "${PIPESTATUS[0]}"
+
+      - name: Report
+        if: always()
+        run: |
+          echo "package: ${{ steps.package.outcome }}"
+          grep -n -i "jlink\|compress\|locale\|Error" samples/hello-world/build.log | head -40 || true
+          if [ -f "$JRE/lib/modules" ]; then
+            echo "lib/modules: $(du -k "$JRE/lib/modules" | cut -f1) KB, jre: $(du -sk "$JRE" | cut -f1) KB"
+            "$JRE/bin/java" --list-modules
+            LIST=$(jimage list "$JRE/lib/modules")
+            for l in es de fr ja; do echo "FormatData_$l: $(echo "$LIST" | grep -c "FormatData_${l}\.class")"; done
+            "$JRE/bin/java" -cp samples/hello-world/target/classes io.github.javapackager.samples.HelloWorld | head -3 || true
+          fi
+          {
+            echo "### java ${{ matrix.java }} / ${{ matrix.args }}: ${{ steps.package.outcome }}"
+            [ -f "$JRE/lib/modules" ] && echo "lib/modules $(du -k "$JRE/lib/modules" | cut -f1) KB"
+            grep -i "warning.*compress\|Error:" samples/hello-world/build.log | head -3 || true
+          } >> "$GITHUB_STEP_SUMMARY"