Improve parsing of Chinese language codes #21

	name: PR preview notification
	on:
	pull_request:
	types:
	- opened

	jobs:
	build_deploy:
	runs-on: ubuntu-latest
	permissions:
	pull-requests: write
	steps:
	- name: Get branch name (merge)
	if: github.event_name != 'pull_request'
	shell: bash
	run: echo "BRANCH_NAME=$(echo ${GITHUB_REF#refs/heads/})" >> $GITHUB_ENV

	- name: Get branch name (pull request)
	if: github.event_name == 'pull_request'
	shell: bash
	run: echo "BRANCH_NAME=$(echo ${GITHUB_HEAD_REF})" >> $GITHUB_ENV

	- name: Escape branch name for URL
	shell: bash
	run: echo "URLSAFE_BRANCH_NAME=$(echo ${BRANCH_NAME} \| sed 's\|[^A-Za-z0-9-]\|-\|g' \| sed -E 's\|-([A-Za-z0-9].[A-Za-z0-9]+)-\|\1\|')" >> $GITHUB_ENV

	- name: Report escaped branch name
	shell: bash
	run: echo ${URLSAFE_BRANCH_NAME}

	- name: Post URL to PR
	uses: mshick/add-pr-comment@v2
	with:
	message: \|
	[Widget preview page.](https://staging.cdn.innovation.ca.gov/br/pr/${{ env.URLSAFE_BRANCH_NAME }}/preview/index.html)

	(You may need to wait a minute or two for the latest preview to appear at the above link.)

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