It's been tricky to get this regex correct because of variations in the way that emails and replies are quoted and escaped by mail clients. So, here I am changing the approach to detect characters that are valid in the Google Groups URL rather than trying to detect the delimiter that comes after the URL.
This should resolve #4330.
It's been tricky to get this regex correct because of variations in the way that emails and replies are quoted and escaped by mail clients. So, here I am changing the approach to detect characters that are valid in the Google Groups URL rather than trying to detect the delimiter that comes after the URL.