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kotlinlang

Is there an equivalent of `java.lang.Character.isLetter(int codePoint)` in Kotlin? I'm getting a warning when importing `j.l.Character` but I don't think there are functions operating on code points.

FWIW, there is <https://github.com/cketti/kotlin-codepoints> but it doesn't seem to contain `isLetter`

You can do `codePoint.toChar().isLetter()`

That's not going to work for codepoints outside the BMP. The doc says "The resulting `Char` code is represented by the least significant 16 bits of this `Int` value."

It seems that a good solution might be to define a value class called `CodePoint` and create member functions for it that mirror the `Char.isXxxx` functions. And looking at the <https://kotlinlang.org/api/core/kotlin-stdlib/kotlin.text/is-supplementary-code-point.html|doc for >`isSupplementaryCodePoint`, it says "In the future it could be deprecated in favour of an overload that would accept a `CodePoint` type." This suggests that someone at JetBrains is already thinking of exactly this.

<https://youtrack.jetbrains.com/issue/KT-71298>