Bug: Insert Missing Cases For Type Union

[nguyenyou]

Describe the bug

I used pattern matching for a string literal type union and encountered a very interesting bug, the generated code by VSCode after I hit "insert missing cases" is:

type Color = "primary" | "secondary" | "danger" | "warning"

def getColor(color: Color) = color match
  case "primary" => "bg-red-200"
  case �[32m"secondary"�[0m => ???
  case �[32m"danger"�[0m => ???
  case �[32m"warning"�[0m => ???

Screen_Recording_2024-06-27_at_17.16.54.mov

cc @kasiaMarek

Expected behavior

No weird characters are generated along with the actually singleton string.

Operating system

macOS

Editor/Extension

VS Code

Version of Metals

1.3.2+15-8bebd63c-SNAPSHOT

Extra context or search terms

No response

[tgodzik]

Thanks for reporting! That's actually coming from the compiler, tough I have no idea how this would show up as I think those are color codes? We can strip them in Metals, but we should check if it's actually coming in the actionable diagnostic in the compiler, which was added in https://github.com/scala/scala3/pull/18314/files

[kasiaMarek]

fixed upstream in: scala/scala3#21120