Fix false negative in regex subset #19

	name: CI
	on: [push, pull_request]
	jobs:
	test:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ["3.8", "3.9", "3.10", "3.11", "3.12"]
	steps:
	- uses: actions/checkout@v4
	with:
	fetch-depth: 0
	- uses: actions/setup-python@v5
	with:
	python-version: ${{ matrix.python-version }}
	cache: 'pip'
	- name: Install Python dependencies
	run: pip install .
	- name: Run tests
	run: python -m unittest --v

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