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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