get_domain is ill defined.

[karlcow]

so get_domain helps extracting a domain name from a title.

webcompat.com/webcompat/templates/__init__.py

Lines 79 to 90 in 8656f17

	def get_domain(title):
	"""Get the 'domain name' from the title.
	In practice, this just grabs the first string before
	the first whitespace, because that's where we put the
	domain when we passed it to GitHub upon creation.
	"""
	domain = re.search(r'^([^ ]+)', title)
	if domain:
	return domain.group(1)
	else:
	return ''

The function returns the first group of continuous text before a space, but the case return '' is not covered in the testing

webcompat.com/tests/unit/test_template.py

Lines 43 to 52 in 8656f17

	def test_get_domain(self):
	"""Test domain name extraction from title.
	(This really means give us the first pile of strings before
	the first whitespace).
	"""
	title = 'staging.webcompat.com - site is not usable'
	assert get_domain(title) == 'staging.webcompat.com'
	title = '😎 😓'
	assert get_domain(title) == '😎'

and indeed the only case where this would happen is when title = '' which is probably not the initial intent of get_domain.

So

1. There's a missing test
2. There might be a modification to do to the regex to really match what we want.

which is probably along

• 'staging.webcompat.com - site is not usable' ➡️ 'staging.webcompat.com'
• 'site is not usable' ➡️ ''