2 @section @code{tolower}
5 POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/tolower.html}
9 Portability problems fixed by Gnulib:
12 This function cannot be called from plain inline or extern inline functions
17 Portability problems not fixed by Gnulib:
20 On Windows and 32-bit AIX platforms, @code{wchar_t} is a 16-bit type and therefore cannot
21 accommodate all Unicode characters.