action.yml

name: 'Argument Counter'
description: 'Count # of arguments passed in'
inputs:
  arguments-to-count: # input id
    description: 'arguments to count'
    required: true
    default: ''
outputs:
  arg-count:
    description: "Count of arguments passed in"
    value: ${{ steps.return-result.outputs.num-args }}
runs:
  using: "composite"
  steps:
    - name: Print arguments if any
      run: |
        echo Arguments: ${{ inputs.arguments-to-count }}.
      shell: bash
    - id: find-result
      run: |
        echo "ARGCOUNT=`${{ github.action_path }}/count-args.sh ${{ inputs.arguments-to-count }}`" >> $GITHUB_ENV
      shell: bash
    - id: return-result  
      run: |
        echo "::set-output name=num-args::$(echo ${{ env.ARGCOUNT }})"
      shell: bash