SimpleDateFormat.format - NotImplementedError - escaping text fragment with single quotes

[Sciss]

import java.util.Locale
val fmt = new java.text.SimpleDateFormat("[d MMM yyyy, HH:mm''ss.SSS] 'AudioFile' ", Locale.US)
fmt.format(new java.util.Date)

This throws NotImplementedError (???). Goes away when I remove the escaped fragment 'AudioFile'.

• https://scastie.scala-lang.org/0fjO9iLSSieLHc4we399cg
• https://scastie.scala-lang.org/dbmlsCXgQTOthZ13UtJJJQ (JVM - working)

The JDK docs are clear:

Text can be quoted using single quotes (') to avoid interpretation.

[Sciss]

Also this rule is not followed:

"''" represents a single quote

instead they are presented as two single quotes.

[cquiroz]

Hi, this implementation of SimpleDateFormat is not really for production use, it is only a minimal set of stubs to make DateTimeFormatter work on scala-java-time. I'd discourage its direct use

Improvements are welcome of course if you want to fix its shortcomings