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Author: Github Actions

README.md

@@ -41,6 +41,20 @@ This does a few things:
 
 Hopefully in the future when `actions` matures the yaml can be simplified.
 
+### using this action with custom invocations
+
+By default, this action runs all the hooks against all the files.  `extra_args`
+lets users specify a single hook id and/or options to pass to `pre-commit run`.
+
+Here's a sample step configuration that only runs the `flake8` hook against all
+the files (use the template above except for the `pre-commit` action):
+
+```yaml
+    - uses: pre-commit/[email protected]
+      with:
+        extra_args: flake8 --all-files
+```
+
 ### using this action in private repositories
 
 this action also provides an additional behaviour when used in private

action.yml

@@ -1,6 +1,10 @@
 name: pre-commit
 description: run pre-commit and optionally commit back to the pull request
 inputs:
+  extra_args:
+    description: options to pass to pre-commit run
+    required: false
+    default: '--all-files'
   token:
     description: github token to clone / push with
     required: false