docs: def _opts_to_dict(*opts):
  	'''Convert a tuple of options returned from getopt into a dictionary.'''
  	ret = {}
  	for key, val in opts:
  		if key[:2] == '--':
  			key = key[2:]
  		elif key[:1] == '-':
  			key = key[1:]
  		if val == '':
  			val = True
  		ret[key.replace('-','_')] = val
  	return ret