feature=[a-z_]+|
annotation_id=annotation_[^&]+|
x-yt-cl=[0-9]+|
+ hl=[^&]*|
)?
|
attribution_link\?a=[^&]+
}, {
'url': 'https://www.youtube.com/watch?feature=foo',
'only_matching': True,
+ }, {
+ 'url': 'https://www.youtube.com/watch?hl=en-GB',
+ 'only_matching': True,
}]
def _real_extract(self, url):