wctype.h
========

POSIX specification:
 https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/wctype.h.html

Gnulib module: wctype-h

Portability problems fixed by Gnulib:

  * This header file is missing on some platforms: HP-UX 11.00.

  * The type wint_t is incorrect on some platforms: mingw, MSVC 14.

  * The functions isw* are missing on some platforms: FreeBSD 4.11.

  * The function iswblank is declared but not defined on some platforms: IRIX 6.5.30.

Portability problems not fixed by Gnulib: