diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index 0fe491b..04dcd4b 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -21,6 +21,26 @@ jobs:
           pip install pytest pytest-md pytest-emoji
       - uses: ./.
 
+  quotes:
+    name: Test quotes
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macos-latest, windows-latest]
+    runs-on: ${{ matrix.os }}
+
+    steps:
+      - uses: actions/checkout@v4
+      - name: Set up Python 3.x
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.x'
+      - name: Install dependencies
+        run: |
+          pip install pytest pytest-md pytest-emoji
+      - uses: ./.
+        with:
+          custom-arguments: -k "not failed"
+
   test-micromamba:
     name: Run tests (setup-micromamba)
     strategy:
diff --git a/action.yml b/action.yml
index 23884bc..acf919c 100644
--- a/action.yml
+++ b/action.yml
@@ -39,17 +39,9 @@ runs:
     - name: Run pytest
       id: pytest
       run: |
-        echo "::group::..."
         REPORT="$(mktemp)"
         echo "report-path=$REPORT" >> $GITHUB_OUTPUT
-        args=()
-        if [ ${{ inputs.verbose }} = true ]; then args+=('-v'); fi
-        if [ ${{ inputs.job-summary }} = true ]; then args+=("--md=$REPORT"); fi
-        if [ ${{ inputs.emoji }} = true ]; then args+=('--emoji'); fi
-        # unpack custom arguments from spaces to array
-        args+=(`echo "${{ inputs.custom-arguments }}"`)
-        echo "::endgroup::"
-        ${{ inputs.custom-pytest }} "${args[@]}"
+        ${{ inputs.custom-pytest }}${{ inputs.verbose == 'true' && ' -v' || '' }}${{ inputs.job-summary == 'true' && ' --md=$REPORT' || '' }}${{ inputs.emoji == 'true' && ' --emoji' || '' }}${{ inputs.custom-arguments != '' && ' ' || '' }}${{ inputs.custom-arguments }}
       shell: bash -el {0}  # use login shell to source .bashrc for environments
     - name: Add report to summary
       # run even if pytest fails