そうなのかー。そしたらKuniwakさんの Syntax.swift に関する変更は入らないのか... https://github.com/apple/swift-syntax/pull/94/files

Pretty results of dump() for Syntax by Kuniwak · Pull Request #94...

The result of dump() with Syntax is not useful. For example, the dumped result of Tests/SwiftSyntaxTest/Inputs/closure.swift is the following: ▿ // A closure without a signature. The test will ensu...