I'm btw. currently moving Kluent from an old manual Gradle approach (supporting all platforms aside from native) to the multiplatform plugin, to get support for native in. If you're interested in having a look or share feedback: https://github.com/MarkusAmshove/Kluent/pull/148

Btw, why not https://github.com/JetBrains/kotlin-native/blob/c348873773643a4b545412f5abbcff91a9f7a72c/runtime/src/main/kotlin/kotlin/text/Char.kt#L31 for digit test?

that didn't seem to exist back in the day, the current native implementation code is from the first day native was announced 🙂 thanks for the hint!