From: Bonita.Montero@gmail.com

Am 22.11.2025 um 15:28 schrieb bart:
> Still doesn't work. I'm using g++ 14.1.0. It doesn't like 'countr_one'
> with or without std::
-std=c++20
> Would it hurt to post a complete, compilable program? Plus the
> compiler invocation if it needs anything unusual.
I'm using Visual C++ or clang-cl (MSVC-compatible clang).
I guess with g++ / clang you need 
> It only needs a minimal main() routine which I can tweak to my test
> input. Unless all it needs to use it is a call to utf8Width("abc")
> which returns a simple integer.
It works the same as your code, i.e. it takes a char-pointer.
> But ATM my C version is still faster!
For sure not that fast as my AVX (seven times) / AVX-512 (13,5 times)
version.

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