It would have the form of something like
<return if> := <opt-whitespace> <if> <opt-whitespace> <function>
Then you could do things like
function someFunction() local everyThingHasGoneWrong() end // code return if everythingHasGoneWrong() // more code return if everyThingHasGoneWrong() end
The first return arg would be a bool for the if, the second and all those after would be the returns. I'm sure there would be some interesting recursive snippets you could do.