Unespected raw string behaviour

Question
1

According to the String Interpolation Overview

The raw interpolator is similar to the s interpolator except that it performs no escaping of literals within the string.

But experimenting on the REPL I got:

scala> """\textbf{text}"""
val res8: String = \textbf{text}

scala> """\rextbf{text}"""
val res9: String = \rextbf{text}

scala> """\underline{text}"""
            ^
       error: invalid unicode escape at index 2 of \underline{text}

My questions are:

  1. why is\u escaped unlike \t or \r ?
  2. how can I correct the error?

Thank you for your time. Enjoy the week-end.
Guido

2

\u is still treated as an escape for historical reasons. Unicode escapes used to be pre-processed in the scanner. That was changed in 2.13.2, which as a point release maintained backwards compatibility with the earlier behaviour in multi line strings.

3

Thank you for the reply.
I’m using 2.13.4, so, if I got you correctly, this issue shouldn’ t occur, should it?
What about question nr. 2? Any idea?
Thank you again.
Guido

4

Martijn just meant that the implementation was changed, but the broken behavior regarding \u could not be fixed because of semantic versioning. It might be fixed in 3.x / Dotty.

How about:

"\\underline{text}"
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