Add a special case _all_ for changes-override to trigger everything

Author: djbe

README.md

@@ -25,7 +25,9 @@ inputs:
     description: Path to the filter file
     required: true
   changes-override:
-    description: Override the changes filter and provide your own set of paths (comma separated)
+    description: |
+      Override the changes filter and provide your own set of paths (comma separated). If you
+      provide the magic value `_all_`, it'll use all the paths from the filter file.
     required: false
   default-key:
     description: Default key (fallback value if no key is provided for a path)

action.yml

@@ -9,7 +9,9 @@ inputs:
     description: Path to the filter file
     required: true
   changes-override:
-    description: Override the changes filter and provide your own set of paths (comma separated)
+    description: |
+      Override the changes filter and provide your own set of paths (comma separated). If you
+      provide the magic value `_all_`, it'll use all the paths from the filter file.
     required: false
   default-key:
     description: Default key (fallback value if no key is provided for a path)
@@ -37,7 +39,15 @@ runs:
       with:
         filters: ${{ inputs.filter-file }}
     - name: Collect changes
-      if: "${{ inputs.changes-override != '' }}"
+      if: "${{ inputs.changes-override == '_all_' }}"
+      id: all
+      shell: bash
+      run: |
+        echo "changes=`yq -o json '
+          keys |
+          map(. | sub("[\\w\\-_]*\\|", ""))
+          ' ${{ inputs.filter-file }} | jq -c`" >> "$GITHUB_OUTPUT"
+    - name: Collect changes
       id: custom
       shell: bash
       run: |
@@ -48,7 +58,7 @@ runs:
       id: matrix-generator
       shell: bash
       run: |
-        CHANGED_PATHS='${{ steps.custom.outputs.changes || steps.filtered.outputs.changes }}'
+        CHANGED_PATHS='${{ steps.filtered.outputs.changes || steps.all.outputs.changes || steps.custom.outputs.changes }}'
 
         # Convert our filters file into a lookup map, so we can map a path to
         # a key. Then map each change entry to it's corresponding key and