tests/ui/diagnostic-flags/terminal_urls.rs - rust-lang/rust - Git at Google

 //@ compile-flags: -Zterminal-urls=yes
 fn main() {
     let () = 4; //~ ERROR
 }
	//@ compile-flags: -Zterminal-urls=yes
	fn main() {
	let () = 4; //~ ERROR
	}