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intellij-ideascala-3intellij-scala

formatting `fewerBraces` does not always compile

Since Scala 3.3 fewerBraces is a standard feature. However, when IDEA 2023.2 (Community Edition) with Scala Plugin 2023.2.19 formats the following code, the result does not compile.

class Foo(i: Int)(s: String)

val fooList: List[Foo] = Foo(42):
  """hi"""
:: Nil

After formatting:

class Foo(i: Int)(s: String)

val fooList: List[Foo] = Foo(42):
  """hi"""
    :: Nil

Am I doing something wrong or is this a bug? How to solve this?

Edit 1: I found the following workaround.

class Foo(i: Int)(s: String)

// @formatter:off
val fooList: List[Foo] = Foo(42):
  """hi"""
:: Nil
// @formatter:on

Edit 2: I reported a bug

Solution

  • This was fixed in plugin build 2024.1.1 (which works with IDEA 2024.1.1).

    https://youtrack.jetbrains.com/issue/SCL-21539/bad-indentation-with-fewer-braces-and-a-list-or-seq