Fixed (#623)

.github/workflows/bashisms.yml

@@ -1,10 +1,6 @@
 name: Check for bashisms
 
 on:
-  # push:
-  #   paths:
-  #     - core/tabs/**
-  #   branches: [ "main" ]
   pull_request:
     paths:
       - core/tabs/**
@@ -20,18 +16,19 @@ jobs:
       - run: git fetch origin ${{ github.base_ref }}
 
       - name: Get a list of changed script files
-        run : |
+        id: get_sh_files
+        run: |
           sh_files=$(git diff --name-only origin/${{ github.base_ref }} HEAD core/tabs | grep '\.sh$' || true)
-          echo "sh_files=$sh_files" >> $GITHUB_ENV
+          echo "::set-output name=sh_files::$sh_files"
       
       - name: Install devscripts
-        if: env.sh_files != ''
+        if: steps.get_sh_files.outputs.sh_files != ''
         run: sudo apt-get update && sudo apt-get install devscripts
 
       - name: Check for bashisms
-        if: env.sh_files != ''
+        if: steps.get_sh_files.outputs.sh_files != ''
         run: |
-          for file in ${{ env.sh_files }}; do
+          for file in ${{ steps.get_sh_files.outputs.sh_files }}; do
               if [[ -f "$file" ]]; then
                   checkbashisms "$file"
               fi