Hi Ken,
> I am unsure if there is a standards-base API that lets us detect
> invalid characters (I'm not interested in something like Recode for
> this). I wonder if mbtowc() and friends would throw errors if they
> encounter an invalid character in the current locale.
The mbtowc(3posix) here says
If s is not a null pointer, mbtowc() shall either return 0 (if s
points to the null byte), or return the number of bytes that
constitute the converted character (if the next n or fewer bytes
form a valid character), or return -1 and may set errno to indicate
the error (if they do not form a valid character).
It goes on to mention EILSEQ. Does that cover your case?
Cheers, Ralph.
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