@node wcsspn
@subsection @code{wcsspn}
@findex wcsspn

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/wcsspn.html}

Gnulib module: wcsspn
@mindex wcsspn

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
On Windows and 32-bit AIX platforms, @code{wchar_t} is a 16-bit type and therefore cannot
accommodate all Unicode characters.
@end itemize
