an autolink http://example.com
inside of brackets [http://example.com], inside of braces {http://example.com}, inside of parentheses (http://example.com)
trailing slash http://example.com/ and http://example.com/path/
an autolink http://example.com inside of brackets [http://example.com], inside of braces {http://example.com}, inside of parentheses (http://example.com) trailing slash http://example.com/ and http://example.com/path/