[clang-format][NFC] Skip ObjCHeaderStyleGuesser for empty code (#82957) #17

	name: "Check for private emails used in PRs"

	on:
	pull_request_target:
	types:
	- opened

	permissions:
	contents: read

	jobs:
	validate_email:
	permissions:
	pull-requests: write
	runs-on: ubuntu-latest
	if: github.repository == 'llvm/llvm-project'
	steps:
	- name: Fetch LLVM sources
	uses: actions/checkout@v4
	with:
	ref: ${{ github.event.pull_request.head.sha }}

	- name: Extract author email
	id: author
	run: \|
	git log -1
	echo "EMAIL=$(git show -s --format='%ae' HEAD~0)" >> $GITHUB_OUTPUT

	- name: Validate author email
	if: ${{ endsWith(steps.author.outputs.EMAIL, 'noreply.github.com') }}
	uses: actions/github-script@v6
	env:
	EMAIL: ${{ steps.author.outputs.EMAIL }}
	with:
	script: \|
	const { EMAIL } = process.env
	await github.rest.issues.createComment({
	issue_number: context.issue.number,
	owner: context.repo.owner,
	repo: context.repo.repo,
	body: `⚠️ We detected that you are using a GitHub private e-mail address to contribute to the repo.
	Please turn off [Keep my email addresses private](https://github.com/settings/emails) setting in your account.
	See [LLVM Discourse](https://discourse.llvm.org/t/hidden-emails-on-github-should-we-do-something-about-it) for more information.
	`})

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