Nested SCSS function calls with leading dash are interpreted as unary minus

[threema-danilo]

Prettier 3.0.3
Playground link

--parser scss

Input:

@function -double($value) {
  @return $value * 2;
}

.selector {
  font-size: -double(-double(1em));
}

Output:

@function -double($value) {
  @return $value * 2;
}

.selector {
  font-size: -double(- double(1em));
}

Expected behavior:

Dashes are valid parts of SCSS function names. You can test this by pasting the following snippet at https://www.sassmeister.com/:

@function -double($value) {
  @return $value * 2;
}

.selector {
  font-size: -double(-double(1em));
}

However, if a function call is nested, the inner leading dash is interpreted as unary minus, and a space is inserted. This breaks the SCSS function call.

[threema-danilo]

The same thing happens within lists: Playground link (see width: -double(1em);).