text: .PHONY: release release-pypi release-github clean clean-test clean-pyc clean-build help
  .DEFAULT_GOAL := help
  define BROWSER_PYSCRIPT
  import os, webbrowser, sys
  try:
  	from urllib import pathname2url
  except:
  	from urllib.request import pathname2url
  
  webbrowser.open("file://" + pathname2url(os.path.abspath(sys.argv[1])))
  endef
  export BROWSER_PYSCRIPT
  
  define PRINT_HELP_PYSCRIPT
  import re, sys
  
  for line in sys.stdin:
  	match = re.match(r'^([a-zA-Z_-]+):.*?## (.*)$$', line)
  	if match:
  		target, help = match.groups()
  		print("%-20s %s" % (target, help))
  endef
  export PRINT_HELP_PYSCRIPT
  BROWSER := python -c "$$BROWSER_PYSCRIPT"
  
  help:
  	@python -c "$$PRINT_HELP_PYSCRIPT" < $(MAKEFILE_LIST)
  
  clean: clean-build clean-pyc clean-testdoc ## remove all build, test, coverage and Python artifacts
  
  clean-build: ## remove build artifacts
  	@echo "Remove build files (build/, dist/, .egg*, ...)."
  	@rm -fr build/
  	@rm -fr dist/
  	@rm -fr .eggs/
  	@find . -name '*.egg-info' -exec rm -fr {} +
  	@find . -name '*.egg' -exec rm -fr {} +
  
  clean-pyc: ## remove Python file artifacts
  	@echo "Remove python files (*.py[co], __pycache__, ...)."
  	@find . -name '*.pyc' -exec rm -f {} +
  	@find . -name '*.pyo' -exec rm -f {} +
  	@find . -name '*~' -exec rm -f {} +
  	@find . -name '__pycache__' -exec rm -fr {} +
  
  clean-testdoc: ## remove test and coverage artifacts
  	@echo "Remove testdoc output files (testdo/_build/html)."
  	@rm -rf testdoc/_build/html
  
  release: release-pypi release-github  ## register PyPI and send tags to github
  
  release-pypi:  ## register PyPI
  	python setup.py sdist upload
  
  release-github:  ## send tags to github
  	git push origin --tags
  
  .PHONY: green green-cov green-single
  green:  ## run green test
  	@echo "Run green."
  	@green tests
  
  green-single:  ## run green with a single process
  	@echo "Run green with a single process."
  	@green -s 1 tests
  
  green-cov:  # run green and calculate coverage
  	@echo "Run green with coverage."
  	@green -r -c tests
  
  .PHONY: flake8
  flake8:  ## run flake8 syntax check
  	flake8 setup.py m2r.py tests
  
  .PHONY: docs
  docs:  ## build document
  	@sphinx-build -E -W -n -j auto -b html docs docs/_build/html
  
  .PHONY: sphinx
  sphinx:  ## run document build server
  	@echo "### Sphinx Build Server Start ###"
  	@python docs/server.py
  
  .PHONY: check
  check:  ## run flake8 and sphinx-build
  	@doit
  
  .PHONY: test
  test: check green-cov  ## run style check and test
  