E0040

Warning name: multiline_string_escape

Escape sequences in $| multiline string lines are deprecated.

MoonBit treats $| lines as multiline string content. Escape sequences such as \n, \t, and \\ in those lines are deprecated because they will be treated literally in the future.

Erroneous example

///|
pub fn text() -> String {
  let result = $|line\nnext
  result
}

Suggestion

Use interpolation when you need an escaped character, or write the literal text directly when that is what the string should contain.

///|
pub fn text() -> String {
  let result = $|line\{'\n'}next
  result
}