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10.545 iswpunct

POSIX specification:
https://pubs.opengroup.org/onlinepubs/9699919799/functions/iswpunct.html

Gnulib module: iswpunct

Portability problems fixed by Gnulib:

• This function is missing on some platforms: Minix 3.1.8.
• This function cannot be called from plain inline or extern inline functions on some platforms: macOS 10.8.
• This function is inconsistent with the ispunct function, because it returns false for the characters '$', '+', '<', '=', '>', '^', '`' , '|', '~' on some platforms: Android 11.

Portability problems not fixed by Gnulib:

• On Windows and 32-bit AIX platforms, wchar_t is a 16-bit type and therefore cannot accommodate all Unicode characters. However, the Gnulib function c32ispunct, provided by Gnulib module c32ispunct, operates on 32-bit wide characters and therefore does not have this limitation.