Tell HN: C Experts Panel – Ask us anything about C

Re:Tell HN: C Experts Panel – Ask us anything about C by begriffs on Tuesday April 14, 2020 @05:23PM (#22871634)

Would the following be a correct way to determine whether there's a problem?

* First call setlocale(LC_CTYPE, "en_US.UTF-8")

* Next feed the UTF-8 string representation of every Unicode codepoint one at a time to mbstowcs() and ensure that the output for each is a wchar_t string of length one

* If all input codepoints numerically match the output wchar_t UTF-32 code units, then the implementation is officially good, and should define __STDC_ISO_10646__?

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Re:Tell HN: C Experts Panel – Ask us anything about C by AaronBallman on Tuesday April 14, 2020 @05:41PM (#22871831)

I think this is correct, assuming that locale is supported by the implementation and wchar_t is wide enough, but I am by no means an expert on character encodings.

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Re:Tell HN: C Experts Panel – Ask us anything about C by rseacord on Tuesday April 14, 2020 @05:38PM (#22871793)

Should work provided your wchar_t type is at least 21-bits wide.

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