Missing case body indent errors at missing unindent

[som-snytt]

Compiler version

3.6.4

Minimized code

def f(i: Int) =
  i match
  case 42 =>
  i + 1
  case 27 =>
//^^^^
//unindent expected, but 'case' found
  i - 1
  case _ =>
  i

Output

-- [E040] Syntax Error: /home/amarki/snips/bad-case-align.scala:6:2 ------------
6 |  case 27 =>
  |  ^^^^
  |  unindent expected, but 'case' found
-- [E103] Syntax Error: /home/amarki/snips/bad-case-align.scala:8:2 ------------
8 |  case _ =>
  |  ^^^^
  |  Illegal start of toplevel definition
  |
  | longer explanation available when compiling with `-explain`
2 errors found
Compilation failed

Expectation

This is one of those little parse error behaviors that could be improved:

unindent expected means indent expected but previously missing.

This is } expected but for indents.

As usual, the deficiency is that I have to scan backward to figure out my typo. That is a bit harder with braceless syntax. (I might be unaware of when an indent is required.) Another well known use case is that while cut/pasting code, I often lose formatting and get it wrong.