Parsing fails on SIP-64 changes

[asarkar]

SIP-64 changes context bound and given clause syntaxes. It has been committed to Scala 3 codebase by the commit 14acdc0.

trait Display[A]:
  def display(value: A): String

final case class Cat(name: String, age: Int, color: String)
  
 given catDisplay: Display[Cat]:
    def display(cat: Cat): String =
      s"${cat.name} is a ${cat.age} year-old ${cat.color} cat."

Note the given definition ends with :, not with, as the latter has been deprecated and emits a warning:

Given member definitions starting with with are no longer supported; use {...} or : followed by newline instead

Using scalafmt 3.8.3 (even the latest v3.8.4-RC3), this fails.

[6] error: /path/to/Cat.scala: org.scalafmt.dynamic.exceptions.PositionExceptionImpl: /path/to/Cat.scala:6: error: [dialect scala3] `;` expected but `:` found
[6]   given catDisplay: Display[Cat]:
[6]                                 ^
[6] Caused by: /path/to/Cat.scala:6: error: [dialect scala3] `;` expected but `:` found
[6]   given catDisplay: Display[Cat]:
[6]                                 ^
[6] 	at org.scalafmt.Scalafmt$.$anonfun$doFormatOne$2(Scalafmt.scala:111)
[6] 	at scala.meta.parsers.Parsed.fold(Errors.scala:12)
[6] 	at scala.meta.parsers.Parsed.fold$(Errors.scala:10)
[6] 	at scala.meta.parsers.Parsed$Error.fold(Errors.scala:28)
[6] 	at org.scalafmt.Scalafmt$.doFormatOne(Scalafmt.scala:114)
[6] 	at org.scalafmt.Scalafmt$.doFormat(Scalafmt.scala:90)
[6] 	at org.scalafmt.Scalafmt$.$anonfun$formatCode$3(Scalafmt.scala:78)

[kitbellew]

duplicate of #4047.