Create legacy-alt-tab.wh.cpp #543

	name: PR mod validation

	on:
	pull_request:
	branches:
	- main

	jobs:
	run:
	runs-on: ubuntu-latest
	name: Test changed files
	steps:
	- name: Checkout
	uses: actions/checkout@v4

	- name: Setup Python
	uses: actions/setup-python@v5
	with:
	python-version: '3.x'

	- name: Get changed files
	id: changed-files
	uses: tj-actions/changed-files@v44
	with:
	json: true

	# Per example from the readme: set to false because we are using an
	# environment variable to store the output and avoid command
	# injection.
	escape_json: false

	- name: Validate the changes
	env:
	PR_AUTHOR: ${{ github.event.pull_request.user.login }}
	ADDED_FILES_COUNT: ${{ steps.changed-files.outputs.added_files_count }}
	MODIFIED_FILES_COUNT: ${{ steps.changed-files.outputs.modified_files_count }}
	ALL_CHANGED_AND_MODIFIED_FILES: ${{ steps.changed-files.outputs.all_changed_and_modified_files }}
	ALL_CHANGED_AND_MODIFIED_FILES_COUNT: ${{ steps.changed-files.outputs.all_changed_and_modified_files_count }}
	run: \|
	python .github/pr_validation.py

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