This PR improve {{none}} fix-it verifier. Currently, it means that no fix-it is expected. I improve it to mean that no more fix-it is expected when use it with normal fix-it verifier at same time. ...

The second review of SE-0279 — Multiple Trailing Closures begins now and runs through April 24, 2020. This is the second review, with a modified proposal. The core team has considered the feedback from the first review and believes that: the underlying motivation for the p...