Use env variables in the auto tag script instead of passing args

action.yml

@@ -47,7 +47,7 @@ runs:
         PR_NUMBER: "${{ inputs.pr_number }}"
       run: |
         echo "Determining whether user has selected an auto-tag option..."
-        script_output=$("${{ github.action_path }}/auto-tag.sh" "${PR_BODY}" "${PR_NUMBER}")
+        script_output=$("${{ github.action_path }}/auto-tag.sh"
         if $? != 0; then
           exit 1
         fi
@@ -71,15 +71,15 @@ runs:
     - name: Determine new tag version
       if: ${{ (inputs.pr_body == '' && inputs.pr_number == '') && steps.get_pr_data.outputs.result && (fromJSON(steps.get_pr_data.outputs.result).number && fromJSON(steps.get_pr_data.outputs.result).body) }}
       shell: sh
+      env:
+        PR_BODY: "${{ fromJson(steps.get_pr_data.outputs.result).body }}"
+        PR_NUMBER: "${{ fromJson(steps.get_pr_data.outputs.result).number }}"
       id: determine_next_tag_retrospectively
       run: |
         echo "Determining whether user selected an auto-tag option..."
         echo "Using GitHub script to get PR info..."
 
-        PR_BODY="${{ fromJson(steps.get_pr_data.outputs.result).body }}"
-        ESCAPED_PR_BODY="$(echo $PR_BODY | envsubst)"
-
-        script_output=$("${{ github.action_path }}/auto-tag.sh" "${ESCAPED_PR_BODY}" "${{ fromJson(steps.get_pr_data.outputs.result).number }}")
+        script_output=$("${{ github.action_path }}/auto-tag.sh"
         if $? != 0; then
           exit 1
         fi

auto-tag.sh

@@ -12,7 +12,7 @@ if [[ -z ${latest_tag} ]]; then
 fi
 echo "Latest tag: ${latest_tag}"
 
-pr_body="$1"
+pr_body="$(echo ${PR_BODY} | envsubst)"
 pr_tag_section=$("${pr_body}" | awk '/^## Proposed version/,/^Notes:/ {if (!/^## Proposed version/ && !/^Notes:/) print}')
 
 # Get selected versioning checkboxes.
@@ -21,7 +21,7 @@ is_patch=$(is_patch_selected "${pr_tag_section}")
 is_minor=$(is_minor_selected "${pr_tag_section}")
 is_major=$(is_major_selected "${pr_tag_section}")
 
-pr_number="$2"
+pr_number="${PR_NUMBER}"
 
 if { [[ ${is_minor} == true ]] && [[ ${is_patch} == true ]]; } ||
 	{ [[ ${is_minor} == true ]] && [[ ${is_major} == true ]]; } ||