No, this is not ergonomic. This is terrible. Please don't do this.
It comes up every once in a while, and it seriously hinders readability. Even though it might make writing code marginally faster, it's spectacularly bad for maintainability – I have known this feature from Python and Swift, and it definitely does more harm than good. It's very easy to abuse, and people do abuse it all the time.
For prior art and further elaboration, see this previous topic.