HeaderMatchingFilter: Gracefully handle missing headers #153

	name: CI

	# Trigger the workflow on push or pull request
	on: [push, pull_request]

	jobs:
	build-ubuntu:
	strategy:
	matrix:
	python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
	name: Build (Python ${{ matrix.python-version }})
	runs-on: ubuntu-20.04
	steps:
	- uses: actions/checkout@v2
	with:
	fetch-depth: 0
	- name: Set up Python
	uses: actions/setup-python@v1
	with:
	python-version: '${{ matrix.python }}'
	- name: Install dependencies
	shell: bash
	run: \|
	sudo apt-get update
	sudo apt-get install -y notmuch python3-notmuch python3-venv flake8
	python3 -m venv env
	source ./env/bin/activate
	pip install setuptools setuptools_scm pytest dkimpy
	ln -s /usr/lib/python3/dist-packages/notmuch ./env/lib/python*/site-packages
	- name: flake8 lint
	run: \|
	source ./env/bin/activate
	flake8 --ignore=E501,W504 afew/
	- name: Tests
	run: \|
	source ./env/bin/activate
	pip install freezegun
	pytest
	- name: build
	run: \|
	source ./env/bin/activate
	python setup.py build
	- name: install
	run: \|
	source ./env/bin/activate
	python setup.py install
	- name: Docs
	run: \|
	source ./env/bin/activate
	pip install sphinx
	sphinx-build -b html docs $(mktemp -d)
	sphinx-build -b man docs $(mktemp -d)

Provide feedback