[example link](example.com) links to `http://example.com`
[example.com](example.com) links to `http://example.com`
[example.com/other](example.com) links to `http://example.com`
[example.com/other_link](example.com/example) links to `http://example.com/example`
www.example.com links to `http://www.example.com`
https://example.com links to `https://example.com` and not `http://example.com`
https://en.wikipedia.org/wiki/🐬 links to the Wikipedia article on dolphins
https://en.wikipedia.org/wiki/URLs#Syntax links to the Syntax section of the Wikipedia article on URLs
test@example.com links to `mailto:test@example.com`
mailto:test@example.com links to `mailto:test@example.com`
[email link](mailto:test@example.com) links to `mailto:test@example.com` and not `http://mailto:test@example.com`
[other link](ts3server://example.com) links to `ts3server://example.com` and not `http://ts3server://example.com`
test_underscore@example.com links to `mailto:test_underscore@example.com`
[link with spaces](example.com/ spaces in the url) links to either `http://example.com/ spaces in the url` or `http://example.com/%20spaces%20in%20the%20url`