case on the same line as : in partial functions

[joan38]

Hi,

Any reasons why not to make the following compile:

elements.collect: case s: String =>
  s

[error] an identifier expected, but 'case' found
[error] elements.collect: case s: String =>
[error]                   ^^^^

https://scastie.scala-lang.org/asibTVDBSWiaMPZEU1I9nA

as opposed to the compiling:

elements.collect:
  case s: String => s

https://scastie.scala-lang.org/C9LRPacdQsib1wMFdQUKYg

Especially that the following works:

elements.map: s =>
  s

https://scastie.scala-lang.org/mHxCBmcQSS6lVLXHto24tw

Thanks

[som-snytt]

In this neighborhood

scala> try ??? catch case t => 42
val res0: Int = 42

scala> 27 match case t => 42
-- [E040] Syntax Error: ------------------------------------------------------------------------------------------------
1 |27 match case t => 42
  |         ^^^^
  |         '{' expected, but 'case' found