Is there an isupper for char32_t? I get an assertion fail on the following code line
assert(isupper(U'Å'));
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ragnarius
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1[Locale-aware version](https://en.cppreference.com/w/cpp/locale/isupper) – BoBTFish Oct 02 '20 at 12:50
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The older [`isupper()`](https://en.cppreference.com/w/c/string/byte/isupper) in `
`/` – Remy Lebeau Oct 02 '20 at 16:04` is also locale-aware, using the locale set with [`setlocale()`](https://en.cppreference.com/w/c/locale/setlocale). But in this case, I would say yes, use the ` ` version instead, and if needed create a custom locale facet that works with UTF-32 data.