Oh it's env here.

JulienPalard · JulienPalard · commit a5e5e61e697d · 2020-12-11T16:07:57.000+01:00
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
@@ -28,9 +28,9 @@ jobs:
           sudo apt-get install -y hunspell hunspell-fr-comprehensive
           sudo python3 -m pip install pospell
       - name: Run pospell
-        with:
-          ADDED_FILES: '${{ join(fromJSON(steps.changed_files.outputs.added), '' '') }}'
-          MODIFIED_FILES: '${{ join(fromJSON(steps.changed_files.outputs.modified), '' '') }}'
+        env:
+          ADDED_FILES: ${{ join(fromJSON(steps.changed_files.outputs.added), ' ') }}
+          MODIFIED_FILES: ${{ join(fromJSON(steps.changed_files.outputs.modified), ' ') }}
         run: |
           CHANGED_PO_FILES=$(printf "%s %s\n" "$ADDED_FILES" "$MODIFIED_FILES" | tr ' ' '\n' | grep '.po$')
           [ -n "$CHANGED_PO_FILES" ] && pospell -p dict -l fr_FR $CHANGED_PO_FILES
