There is an interesting parse test in swift/confusables.swift at main · apple/swift · GitHub, but I can't get the mentioned fix-its to show up with the latest version of Swift. Is it intended?
The following example contains the GREEK QUESTION MARK instead of a semicolon:
func f() {
print("A"); print("B")
// error: Cannot find ';' in scope
// error: Consecutive statements on a line must be separated by ';'
// fix-it: Insert ';'
}