In deploy_unified_header.yml, only commit and push if the generated file #11

	name: Build and deploy a unified header to the single_header branch.

	on:
	push:
	branches: [ "master" ]

	jobs:
	build:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v3

	- name: Setup
	run: \|
	mkdir ${{github.workspace}}/pcpp
	pip install -t ${{github.workspace}}/pcpp pcpp

	- name: Build
	continue-on-error: true
	run: PYTHONPATH=${{github.workspace}}/pcpp:$PYTHONPATH python3 ${{github.workspace}}/pcpp/bin/pcpp -I ${{github.workspace}}/include --passthru-defines --passthru-comments --line-directive -o ${{github.workspace}}/onebig.hpp ${{github.workspace}}/include/boost/parser/parser.hpp ${{github.workspace}}/include/boost/parser/transcode_view.hpp

	- name: Deploy
	working-directory: ${{github.workspace}}
	run: \|
	git fetch
	git switch single_header
	mv ${{github.workspace}}/onebig.hpp ${{github.workspace}}/include/boost/parser/parser_unified.hpp
	if [ -z `git diff` ] ; then
	git config user.name 'Zach Laine'
	git config user.email 'whatwasthataddress@gmail.com'
	git commit -am 'Generated by Github action on push to master.'
	git push
	fi

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